WO1995028600A1 - Ensemble de fixation pour luminaire emboitable - Google Patents

Ensemble de fixation pour luminaire emboitable Download PDF

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Publication number
WO1995028600A1
WO1995028600A1 PCT/CN1994/000028 CN9400028W WO9528600A1 WO 1995028600 A1 WO1995028600 A1 WO 1995028600A1 CN 9400028 W CN9400028 W CN 9400028W WO 9528600 A1 WO9528600 A1 WO 9528600A1
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WO
WIPO (PCT)
Prior art keywords
plug
socket
pair
light pole
connecting device
Prior art date
Application number
PCT/CN1994/000028
Other languages
English (en)
French (fr)
Inventor
Kam Hoi Chan
Original Assignee
Kam Hoi Chan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kam Hoi Chan filed Critical Kam Hoi Chan
Priority to US08/571,893 priority Critical patent/US5704728A/en
Priority to GB9525253A priority patent/GB2294312B/en
Priority to PCT/CN1994/000028 priority patent/WO1995028600A1/zh
Publication of WO1995028600A1 publication Critical patent/WO1995028600A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/116—Fixing lighting devices to arms or standards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04—Clamping or clipping connections
    • F16B7/0406—Clamping or clipping connections for rods or tubes being coaxial
    • F16B7/0413—Clamping or clipping connections for rods or tubes being coaxial for tubes using the innerside thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y10T403/559—Fluted or splined section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler

Definitions

  • the present invention relates to a plug-in connection device for connecting a plurality of thin-walled welded seam tubes into one body, and is particularly suitable for the connection of a segmented packaged light pole of a floor lamp.
  • a segmented packaged light pole of a floor lamp There are various forms of floor lamps. There are one or more light poles with a large height. The lowest height must also be suitable for the user to illuminate the books and newspapers in his hand from a height when sitting. . The highest person must make the light shining to the ceiling higher than the head of a person of ordinary height. Therefore, in order to facilitate transportation and reduce the size of the packaging box, the entire light pole is divided into several sections for production and packaging. Several light poles are assembled into one.
  • the lamp post needs to be painted after the embossing process. During transportation, the threads are easily blocked by paint or damaged by hard objects, which makes installation difficult for users.
  • a pipe-to-pipe connection is introduced, that is, a pair of pipes to be connected is connected. One end of one of the light pole tubes is reduced in diameter, and an L-shaped groove is punched out.
  • a convex bead is punched in the mouth of the other unreduced light pole tube, and the unreduced diameter tube is sleeved on the reduced diameter tube, and The bead is first advanced along the axial groove of the L-shaped groove, and then a small distance is screwed along the radial groove so that the two pipes cannot be pulled away by the axial force.
  • this kind of lamp pole connection device avoids the problems of the wall thickness of the screw connection being too thin, complicated processing, too many rotations, etc., it still has its own disadvantages in practice, namely: (1) There is a congenital slope-shaped transition area between the small diameter and the original diameter, and the outline of the two pipes after the connection is obviously broken, which cannot be used for high-end products; (2) Since there is no measure to prevent relative rotation between the two tubes, as long as there is a small relative movement of the two tubes in the loosening direction, they will loosen, and at this time, if the entire lamp is in a lifted state, several The kilogram base will fall on the feet of the lantern and cause injury. Disclosure of the Invention.
  • the purpose of the present invention is to overcome the disadvantages of the above-mentioned prior structure, and provide a lamp pole connection device with simple processing, reliable connection, high productivity, low cost, beautiful appearance and convenient installation.
  • the present invention adopts a plug-in type light pole connection device, which includes a pair of hollow cylindrical plugs and sockets that are respectively press-fitted in a pair of tubes with rolled inner concave ribs.
  • a plurality of longitudinal slits are formed in the hollow cylinder, so that the arc-shaped pieces formed by the longitudinal slits can be elastically bent to reduce the diameter of the hollow cylinder there, so that they can be press-fitted through the concave ring ribs.
  • the smallest inner diameter of the pair of tubes and the pair of hollow cylinders is only a fitting fit on the concave ring rib portion, so that the inner diameter of the pair of hollow cylinders is the smallest at the fitting part;
  • Another hollow cylinder with an outer diameter that matches the socket hole has a radial protrusion at the front end in the insertion direction. There are multiple slits so that the outer diameter formed by the radial protrusion can be reduced into the socket hole;
  • the non-reduced outer diameter must be forced through the minimum inner diameter in the socket hole before reaching the end of the stroke. At this time, the plug and the Zama still leave some deformation stress, while the radial ribs fit into the ring groove at the bottom of the hole formed within the socket engagement.
  • the outer surface of the pair of hollow cylinders that fits with the inner wall of the pipe has one or more welds on the inner wall of the pipe to limit the two fittings
  • the inner hole of the socket has two longitudinal ribs, and the outer surface of the other hollow cylinder of the plug is provided with two longitudinal grooves, so that the longitudinal ribs cooperate with the longitudinal grooves to prevent relative rotation of the two mating parts.
  • the pair of plugs and sockets are made of plastic material or die-casted from a low-melting alloy, and a decorative convex ring can be arranged on each of them.
  • the radial convex rib of the plug and the matching ring groove on the socket form a buckle that can be caught and pulled multiple times or a buckle that cannot be pulled once.
  • the rolled inner H-ring ribs on the pair of pipes may be one or more semi-circular ribs, such as triangular, zigzag, and the like.
  • FIG. 1 is a longitudinal sectional view of the present invention, showing a state in which the upper and lower pipes are plugged into an integrated body by a plug and a socket connected thereto;
  • FIG. 2 is an axial side view of the plug in the device of the present invention, showing the elements distributed on the outer surface of the plug;
  • Fig. 3 Axial side view of the socket in the device of the present invention, showing various elements distributed on the inner and outer surfaces of the socket;
  • FIG. 4 is a schematic diagram of the invention that the plug and socket are made non-removable
  • FIG. 5 is a diagram showing an example of the outline of a connecting part of the present invention.
  • 6A is an axial force curve diagram of a buckle device of the present invention.
  • FIG. 6B is a graph of the axial force caused by the reinforcing flange of the present invention.
  • 1 is an upper tube (this is a term used for convenience of explanation and does not limit the invention to be used vertically)
  • 2 is a plug press-fitted with the upper tube 1
  • 3 is the lower tube
  • 4 is a socket that is press-fitted with the lower tube 3 (it can be understood that the socket does not have to be installed in the lower tube, it can be installed in the upper tube, but the lower tube and the plug are press-fitted at this time).
  • FIG. 1 is an upper tube (this is a term used for convenience of explanation and does not limit the invention to be used vertically)
  • 3 is the lower tube
  • 4 is a socket that is press-fitted with the lower tube 3 (it can be understood that the socket does not have to be installed in the lower tube, it can be installed in the upper tube, but the lower tube and the plug are press-fitted at this time).
  • FIG. 1 is an upper tube (
  • the outer edge of the lowermost end of the plug 2 is made into a convex hemispherical ring rib, and the inner edge of the lowermost end of the socket 4 is made to match the hemispherical ring rib to form a buckle.
  • the lower half of the plug 2 is designed to be retractable toward the center as a spring collet used on a lathe, so the tube 1 is pulled out with the plug 2 ⁇ Socket 4.
  • the elements on the surface of the plug 2 are clearly shown in the side view of the shaft.
  • the plug 2 is mass-produced by an injection molding machine using a plastic material (but other materials and processing methods are also feasible, such as die casting with a low-melting alloy). From the outside, it has three cylindrical surfaces, and a concave annular groove is provided at the bottom of the uppermost cylindrical surface (for convenience of explanation, we have made it into a semi-circular shape. In fact, it can have various shapes, such as a triangle, The number of zigzags, etc., can also be more than one), which is used to match the ring ribs made by the traditional method of the upper part of the upper tube.
  • the device of the present invention is dedicated to the cheapest welded pipe, when the diameter of such a pipe is 36 mm, the wall thickness is about 1 mm, and the protruding height of the weld on the inner wall of the pipe generally does not exceed 0.5 mm, and its width is generally Not more than 1 mm (the outer surface of the pipe does not have welding seams protruding, and is smooth after painting). Therefore, a groove 5 is formed on the cylindrical surface of the plug 2 and the inner surface of the pipe 1 to accommodate the welding seam. There are two grooves 5 in FIG. 2, which can be increased or decreased in actual use.
  • Increasing the groove 5 can facilitate the alignment operation during press-fitting, for example When there are six slots 5, the worker can pick up a plug 2 and rotate it by up to 30 ° to align the weld on the tube 1.
  • the width of the groove 5 may be 1.5 mm, and the depth may be 1 mm.
  • the diameter of the upper part can be elastically reduced during the press-fitting process. After pressing to the final position, the diameter of the upper part is restored under the action of elasticity.
  • the groove 5 also uses the protruding welding seam to prevent the pipe 1 and the plug 2 from rotating relative to each other.
  • the contacting area is reduced and the bonding stress between the plug 2 and the upper tube 1 is increased, making the joint more stable. It also helps to increase the elasticity of the six arcs formed by the slits 6. It is also helpful for press fitting operations.
  • the main purpose is to make the semi-circular ring ribs of the tube 1 as close to the mouth as possible to facilitate the rolling operation. It can be seen from FIG. 1 that if the convex ring 7 is eliminated, the inner bottom of the upper part of the plug 2 also needs to be raised accordingly. As soon as the inner bottom is raised, the elasticity of the six arcs on the upper part of the plug 2 is reduced, which may cause pressure. The timing is broken due to insufficient elasticity. Therefore, only the semi-circular ring ribs of the pipe 1 also rise up, that is, the distance between the ring ribs and the mouth of the pipe must be increased.
  • the convex ring 7 is not necessary.
  • the joints of the two pipes can have a variety of different shapes.
  • the three shapes in FIG. 5 are only a part of the shapes that the connection device of the present invention can have.
  • Ring ribs are not necessarily semi-circular.
  • the convex ring 7 is not necessarily limited to straight or semi-circular, and it is an injection-molded part. Any complex shape can be used and can be electroplated, so its The advantages of decorative diversity are beyond the reach of any prior art. Now looking at FIG.
  • the socket 4 shown in FIG. 3 is exactly the same as the plug 2 in terms of the characteristics of its outer surface. It also has six slots 6 'and two slots 5', and a semicircular ring. The groove is used to match the concave semicircular ring rib of the lower tube 3, except that the convex ring 7 in FIG. 2 cannot be seen here. ⁇ As mentioned above, the convex ring 7 can be used selectively in the plug 2. Therefore, the convex ring 7 can also be added to the socket 4. Because of the press-fitting principle of the socket 4 and the lower tube 3, as described above, The plug 2 is exactly the same as the upper tube 1, so I won't go into details. Here, let's talk about the inner surface of the socket 4.
  • FIG. 11 in Figure 3 is two ribs made on the inner surface of the socket 4. It is used to simulate the protruding weld on the inner wall of the weld pipe to prevent the socket 4 and the plug. 2 Relative rotation occurs. Since the socket 4 is made of plastic, two ribs 11 are used so that the total strength can approach the iron quilting protruding in the pipe wall.
  • the semicircular convex ring rib 10 with a radius R at the lower outer end of the plug 2 and the rounded edge of the inner hole of the upper end of the socket 4 are forced to force the lower part of the plug 2 to be formed by six slots 8.
  • the six arcs of the plug are retracted, so that the lower part of the plug 2 enters the inner hole of the socket 4 and finally reaches the assembly position of FIG.
  • the ring bar 10 is matched with a matching ring groove at the lower inner hole port of the socket 4. If the plug 2 cannot be pulled out after being inserted into the socket 4, the ring rib 10 can be changed into a quarter circle as shown in FIG.
  • the R distance on the horizontal coordinate (stroke) indicates that the head radius of the ring rib 10 is between
  • the ring bar 10 is retracted by a distance of R, causing the maximum axial resistance A.
  • the friction resistance B When the ring bar 10 starts to enter the mating position, The frictional resistance is decreasing.
  • the ring bar 10 and its mating groove are completely matched, there is no axial force.
  • the ring bar 10 needs the maximum tensile force to disengage from the mating groove. There is only frictional resistance after disengaging the groove, and there is no axial force after the socket 4 is completely pulled out.
  • the device of the present invention is designed with a reinforcing flange 12 at the lower part of the inner cavity of the plug 2.
  • the main role is to make the diameter of the cylinder at this part difficult Is reduced, and the diameter of the cylinder above and below this site can be reduced to varying degrees.
  • the inner surface of the socket 4 has the smallest diameter at the center position of the concave semi-circular rib of the lower tube 3.
  • the shaft and the hole are plastic parts, they have great elasticity, and the force curve is shown in Figure 6B. It can be seen that, firstly, the axial force (whether pushing or pulling) can be designed to be larger, and secondly, its acting distance is also much larger than R (because the radius of the ring 3 of the lower tube is larger than that of the ring 10) Is there a certain amount of axial stress at the end of the stroke. Because then If the plug 2 is to be pulled out of the socket 4, it is not only to overcome friction, but mainly to overcome the deformation resistance required to pull the large outer diameter of the shaft through the small inner diameter of the hole.
  • the cheapest thin-walled welded pipe and a pair of injection-molded parts can be used to reduce the material cost to a minimum and the number of man-hours for parts production;
  • This plug-in pipe connection device is very easy to install, that is, a press fit that moves in a straight line. In the factory, you only need to press the lever-type press twice. The user only needs to press the upper and lower pipes. It can be automatically prevented from loosening by inserting it once after aligning it.

Description

说明书 插栳式灯杆连接装置 技术领域 本发明涉及一种把多节薄壁焊缝管连成一体的插接式连接装置， 尤其 适用于座地灯的分节包装灯杆的连接。 背景技术 座地灯有种种不同的形式， 伹是都有一根或多根具有较大高度的灯杆, 其高度最低者也必须适合使用者在坐姿时灯光能从高处照亮手中的书报。 最高者则必须使向天花板照射的灯， 高过一般高度人士的头部， 因此， 为 了方便运输和缩小包装盒尺寸， 整根灯杆被分成数节生产和包装， 用户购 回后再把这数节灯杆装成一根。 先有技术的灯杆与灯杆之间的联接， 至今以嫘纹连接为主， 其缺点在 已批准的中国实用新型专利 CN92201856.1及 CN92225228.9中已多次提及， 这里再简单重复一下：
(1) 嫘纹拧合时需要相对转动超过 360° , 不单给装配操作带来不便， 而 且不符合安全标准中电线扭转角度不得超过 360° 的规定；
(2) 为了要在灯杆管壁上加工内（外）嫘纹，不能使用太薄的管壁， 从而增 加了灯杆的重量和成本；
(3) 为了要在管壁上加工螺纹， 在使用局部加强的焊接管时， 不单要多花 工时先加工凸出的焊缝， 而且在螺纹加工过程中由于焊缝和焊接热影响区 的加工性能不同于其他部分， 使整个加工出的嫘紋质量下降；
(4) 灯杆在嫘纹加工后需进行喷漆。 运输时， 螺纹易被油漆堵塞或被硬物 撞坏， 使用户安装困难， 在已批准的中国实用新型专利 CN92225228.9中，介绍了一种管对管的 联接，即把一对要连接的灯杆管之一的一端进行缩径， 并冲压出 L形的 槽， 在另一未縮径灯杆管口冲压出一个凸珠， 把该未缩径管套在已缩径管上， 并使该凸珠先沿着 L形槽的轴向槽前进，然后沿着径向槽旋入一小段距离 以便使该两根管不能由轴向力拉离。 该种灯杆连接装置虽然避免了螺纹连 接的壁厚不能太薄、 加工复杂、 旋转圈数太多等问题， 但是在实用上还是 有它自己的缺点， 即： （1)由于縮径管的小径和原来直径之间存在着先天 性的斜坡形过渡区， 连接后的两管轮廓有明显断裂， 不能用于高档产品； (2) 由于两管之间并无防止相对转动的措施， 只要两管向拧松方向有小小 的相对运动， 就会松脱， 并且此时如果整盏灯是处于被提起的状态，几公 斤重的底座就会跌在提灯人的脚上造成伤害。 发明的公开. 本发明之目的在于克服上述先有结构之不足， 提供一种加工简单， 连 接牢靠， 生产率高， 成本低廉， 外形美观， 安装方便的灯杆连接装置。 为了达到上述目的， 本发明采用了一种插接式的灯杆连接装置， 其包 括一对分别压配在带滚压内凹环筋的一对管子中的空心圆柱体形的插头和 插座， 该对空心圆柱体上开有多条纵向缝，以使这些纵向槽缝所形成的弧 形片能弹性地弯曲而使该处的空心圆柱体直径缩小， 从而能被压配通过该 内凹环筋的最小内径， 其特征在于， 该对管子和该对空心圆柱体只在该内 凹环筋部分公盈配合使该对空心圆柱体的内径在该公盈配合部位为最小； 该插头上还有外径和插座孔配合的另一个空心圆柱体， 其插入方向的前端 有径向凸筋， 有多条开缝使径向凸筋形成的外径能缩小进入插座孔； 在该 另一个空心圆柱体的适当部位有一个内法兰式加强环以保证该处外径不能 缩小， 该不能缩小外径必须强行通过该插座孔中的该最小内径后才到达行 程终点， 此时该插头和该插座间仍留有一定的变形应力， 同时该径向凸筋 进入位于该插座内孔底部的相配环槽中形成扣合。
- 该对管子为薄壁焊缝管时， 该对空心圆柱体的和该管内壁配合的外表 面上有一条或更多条用以容纳该管内壁上凸出的焊缝， 限制两配合件的相 对转动和增加配合面间贴合应力的纵向槽。 该插座的内孔有两条纵向凸筋， 而该插头的另一个空心圆柱体外表面 上设有两条纵向槽,使该纵向凸筋配合该纵向槽以防止该两个配合件发生 相对旋转。 该一对插头和插座是用塑胶材料制造或用低熔合金压铸而成的， 且其 上都可以设置一个装饰性凸环。 该插头的径向凸筋和该插座上相配环槽形成可多次搭住和拉开的搭扣 或一次搭上而不能拉开的搭扣。 该对管子上的滚压出的内 H环筋可以是一条或多条半圆形； 三角形、 锯齿形等环筋。 该对管子装配时只要把带有插头的管子对准带有插座的管子并用力一 插， 咔嗒一声（手能感觉到）就装好了。 要拆开这连接着的两管时，也只要 简单地用力拔开就行了。 当然， 这个拔开力的大小是按灯座的重量及有关安全标准设计的， 至 少在 15公斤以上， 也能做成插入后普通人力拔不出来即可。 附图的简要说明 下面按附图对本发明的实施例进行说明， 附图是：
图 1是本发明的纵剖面图，显示上、 下管由与其连成一体的插头和 插座插接成一体后的情况；
图 2是本发明装置中插头的轴侧视图，显示分布在插头外表面上的各 要素；
图 3 本发明装置中插座的轴侧视图，显示分布在插座内外表面上的 各要素；
图 4是 发明插头插座做成不可拔出的示意图；
图 5是本发明连接部分轮廓示例图；
图 6A是本发明搭扣装置的轴向作用力曲线图；
图 6B是本发明加强法兰造成的轴向作用力曲线图。 实施发明的最佳方式 先看图 1， 其中的 1是上管（这是为了方便说明而使用的名词，并非限 制本发明一定要垂直使用）， 2是和上管 1压配成一体的插头， 3是下管， 4 是和下管 3压配成一体的插座（可以理解，插座也并非一定要装在下管， 它 可以装在上管， 但此时下管就和插头压配了）。 在图 1中把插头 2的最下端 外缘制成外凸的半球形环筋， 把插座 4的最下端内缘制成和该半球形环筋 相配而形成搭扣。 此时， 如果用力把上管 1和下管 3向分离方向拉，插头 2 下半部因为设计成像车床上用的弹簧夹头那样能向中心收缩的， 所以管 1 就带着插头 2被拔出插座 4。 再看图 2， 这里清楚地用轴侧视图显示出插头 2表面上的各要素。 插头 2在本发明中是用塑胶材料以注塑机大量生产的（但使用其他材料和加工方 法也是可行的， 例如用低熔合金压铸）。 它从外表看， 有三个圆柱面， 最 上的圆柱面下部有一条凹入的环形槽（为了方便说明起见， 我们把它制成 半圆形的， 实际上它可以是各种形状， 例如三角形， 锯齿形等， 其数量也 可以多过一条）， 用来和上管 1口部用传统方法制出的环筋相配。 由于本发 明装置是专用于价钱最便宜的焊缝管， 这种管的直径为 36毫米时，壁厚在 1毫米左右， 焊缝在管内壁的凸出高度一般不超过 0.5毫米， 其宽度一般不 超过 1毫米（管的外表并无焊缝凸出，涂漆后光整无痕）， 因此， 在插头 2和 管 1内表面相配合的圆柱面上制有容纳焊缝的槽 5，该槽 5在图 2中是两条， 实际使用时可以增加或减少， 增加槽 5可以方便压配时的对准操作， 例如 当槽 5有六条时，工人随意拿起一个插头 2后最多旋转 30° 就可以对准管 1 上的那条焊缝。 在上述举例的焊缝尺寸情况下， 槽 5的宽度可取 1.5毫米， 深度可取 1毫米。 当把插头 2上的槽 5对准了管 1内壁的焊缝后,就可利用插头 2中部的凸 环 7的下端面为着力面把插头 2压入管 1中，直至管 1口端碰着凸环 7的上端 面为止。 由于插头 2的上部制有多条槽缝 6(图 2中是六条），因此在压配过 程中该上部的直径能弹性地缩小， 压到终了位置后， 该上部的直径在弹性 作用下复原， 如图 1所示。 槽 5的作用除了为容纳凸出的焊缝外， 同时还利用凸出的焊缝作为防 止管 1和插头 2做相对转动。 其次， 选用数量较多的槽 5除了可以方便对准 焊缝外， 还由于使接触面积减小而增加了插头 2和上管 1之间的贴合应力， 使接合更稳实。 同时也有助于增加由开缝 6所形成的六片弧片的弹性。 此 外， 对压配操作也有帮助。 凸环 7除了装饰作用外， 主要是为了使管 1的半圆形环筋可以尽量靠近 管口以方便滚压操作。 由图 1可以看出，如果取消凸环 7, 则插头 2上部的 内底也要相应升高， 内底一升高， 插头 2上部的六片弧片的弹性就减小， 可能会在压配时因弹性不足而破裂， 因此， 管 1的半圆形环筋只有也随之 升髙， 即环筋离管口的距离要增加。 这样滚压上管 1的内凹半圆环筋时就 要和下管 3采取不同的定位深度，操作起来会慢些、 麻烦些， 但并非不可 能,所以凸环 7并不是非要不可的。 有了凸环 7可以使两个管的连接处有多 种不同的外形， 图 5中的三种外形只是本发明连接装置可以具有的外形中 的一部分， 因为如上所述， 管口的凹下环筋不一定是半圆形的， 同理， 凸 环 7也不一定限制为平直形或半圆形的，而且它是个注塑件， 任何复杂形 状都能采用而又能进行电镀， 所以其装饰性多样性的优点是任何先有技术 做不到的。 现在再来看图 3， 图 3中画的插座 4就其外表面的特征来说，和插头 2完 全相同，它也有六条槽缝 6'和两条槽 5'， 还有一条半圆形的环槽用来配合 下管 3的内凹半圆形环筋，所不同的是在这里看不见图 2中的凸环 7。 伹是 正如上面所述， 凸环 7在插头 2中是可以选择使用的，因此， 在插座 4中也 同样可以增加凸环 7的， 由于插座 4和下管 3的压配道理和上面所说的插头 2和上管 1的完全一样，所以不再多说了。 这里来说一下插座 4的内表面,图 3中的 11是在插座 4内表面上制出的两条凸筋，它是用来模拟焊缝管内壁的 凸出焊缝从而防止插座 4和插头 2发生相对旋转的。 由于插座 4是由塑料制 成的， 所以用了两条凸筋 11以便其总强度能接近管壁内凸出的铁焯缝。
说到这里为止， 本发明装置的两个塑胶件和管子的压配和压配后的各 件防止相对旋转的方法都已基本叙述清楚。 下面要说的是组合后的两根管 子插接的问题。 由图 1可以看出， 当插头 2插入插座 4时,把图 2中的插头 2下部的两条 槽 9(图中只看见一条， 其作用和槽 5完全相同）对准插座 4的两条凸筋 11, 此时插头 2下部外端的半径为 R的半圆形凸起的环筋 10和插座 4的上端内 孔边倒圆的边缘相碰，迫使插头 2下部由六条槽缝 8所形成的六片弧片内缩 ,使插头 2下部进入插座 4内孔，最后到达图 1的装配位置,此时插头 2下部 的六片弧片由弹力恢复到原来形状， 插头 2下端的半圆形环筋 10和插座 4 下部内孔端口处的相配环槽配合。 如果使插头 2插入插座 4后不能再被拉 出，就可以按图 4那样把环筋 10改成四分之一圆形。 当然， 也可以把它做 成其他形状， 如三角形、 锯齿形等等。 不论插头 2下端的环筋 10和它所配合的插座 4下端内缘环槽是什么形 状，在它们进入理论配合位置后， 它们之间是没有轴向的预应力了。 如 果误差的存在使得它们之间有微小的轴向间隙的话， 只要手感觉得出， 整件产品就只能作为低档品卖了。 以图 2中所绘的环筋 10为例,插入时（ 正行程）的轴向力变化如图 6A所示，在横座标（行程）上的 R距离即表示 环筋 10的头部半径在插入开始时，环筋 10要缩回 R距离，造成了最大轴 向抗力 A,等到环筋 10已完全收缩后，再往前推就只有摩擦抗力 B了，等 到环筋 10开始进入配合位置时，摩擦抗力都在减小， 等到环筋 10和它的 配合槽完全配妥后,没有任何轴向力了。 回程时， 情况刚刚相反， 环筋 10要脱离配合槽时需要最大拉力 ,脱离槽后只有摩擦阻力， 完全拉出插 座 4后又没有任何轴向力了。 由图 6A可知，真正的保险距离仅为 R,而 R又不可能做得很大。 因此， 当有轴向间隙存在时， 单靠环筋 10就很难被用户接受了。 为此， 本发明 的装置在插头 2的内腔下部设计了一个加强法兰 12,用了它以后， 除了 能增加环筋 10的弹力外， 主要的作用是使得在此部位的圆柱直径很难被 缩小,而在此部位之上下的圆柱直径都能作不同程度的缩小。 在图 1上可 以看出， 插座 4的内表面上，在下管 3内凹半圆环筋的中心位置上的直径 最小。 因为在此位置以下有开缝 6'， 在此位置以上则塑胶和焊管之间没 有公盈， 只有在下管 3的环筋部位， 因为是压配合设计， 此处留有适当 的公盈， 因而形成最小直径（但最小直径并非一定要靠此方法形成， 也 可直接在插座 4的内壁上做成）。 因此， 如图 1所示，该加强法兰 12被放在下管 3内凹半圆环筋的下方， 也就是说， 在轴 --孔配合系统中，轴上的最大外径必须被加压通过所配 孔的最小内径， 由于轴和孔都是塑胶件， 所以具有很大的弹性， 其作用 力曲线图如图 6B所示。 可以看出， 首先是轴向力（不论推或拉）可以设计 得较大，其次是其作用距离也比 R大得多，（因为下管 3环筋的半径大过环 筋 10)再者是在行程的终点位置还是有一定大小的轴向应力。 因为这时 如果要把插头 2拉出插座 4，不单是要克服摩擦力， 而主要是需克服把轴 的大外径拉过孔的小内径所需的变形阻力。
因此， 本发明的装置在装配（插接）好以后，用手是感觉不出轴向间 隙的。 工业上应用的可能性 本发明的结构和作用已详细说明如上， 本发明装置能达到的效果如下：
(1) 能使用最便宜的薄壁焊缝管及一对注塑零件分节式灯杆， 使材料成本 降到最低， 零件生产工时最少；
(2) 利用管壁焊缝起止推作用， 利用压配时的变形作为止退及加强应力措 施， 充分发挥了零件每一部分的作用；
(3) 扩大了产品外形美化能力， 使两管可以直接对接， 也可在对接两管间 增加一圈各种形状和不同颜色（包括电镀）的装饰环，因此， 可用于任何涂 装的灯杆连接；
(4) 这种插接式管子连接装置安装十分简便， 即是一种直线运动的压配合， 在工厂中只要使用手拉杠杆式压机压两次即可， 用户只须把上、 下管对准 后用力插入一次， 就能自动防止松脱。

Claims

权利要求书
1. 一种插接式灯杆连接装置， 包括一对分别压配在带滚压内 IHI环筋的一 对管子中的空心圆柱体形的插头和插座， 该对空心圆柱体上开有多条纵向 缝，以使这些纵向槽缝所形成的弧形片能弹性地弯曲而使该处的空心圆柱 体直径缩小， 从而能被压配通过该内 IHI环筋的最小内径；
箕特征在于 该对管子和该对空心圆柱体只在该内凹环筋部分公盈 配合使该对空心圆柱体的内径在该公盈配 部位为最小； .该插头上还有外 径和插座孔配合的另一个空心圆柱体， 其插入方向的前端有径向凸筋， 有 多条开缝使径向凸筋形成的外径能缩小进入插座孔； 在该另一个空心圆柱 体的适当部位有一个内法兰式加强环以保证该^：外径不能缩小， 该不能缩 小外径必须强行通过该插座孔中的该最小内径后才到达行程终点， 此时该 插头和该插座间仍留有一定的变形应力， 同时该径向凸筋进入位于该插座 内孔底部的相配环槽中形成扣合。
2. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该对管子为薄壁焊缝管时， 该对空心圆柱体的和该管内 壁配合的外表面上有一条或更多条用以容纳该管内壁上凸出的焊缝， 限制 两配合件的相对转动和增加配合面间贴合应力的纵向槽。
3. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该插座的内孔有两条纵向凸筋， 而该插头的另一个空心 圆柱体外表面上设有两条纵向槽,使该纵向凸筋配合该纵向槽以防止该两 个配合件发生相对旋转。
4. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该插头或该插座上都可以设置一个装饰性凸环。
5. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该一对插头和插座是用塑胶材料制造而成的。
6. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该一对插头和插座是用低熔合金压铸而成的。
7. 如权利要求 1中所述的插接式灯杆连接装置， '
其特征在于 该插头的径向凸筋和该插座上相配环槽形成可多次搭住 和拉开的搭扣。
8. 如权利要求 1中所述的插接式灯杆连接装置，
其特征在于 该插头的径向凸筋和该插座上相配环槽形成一次搭上而 不能拉开的搭扣。
9. 如权利要求 1至 8中任意一个所述的插接式灯杆连接装置，
其特征在于 该对管子上的滚压出的内凹环筋可以是半圆形、 三角形、 锯齿形等环筋。
10. 如权利要求 1至 8中任意一个所述的插接式灯杆连接装置，
其特征在于 该对管子上的滚压出的内凹环筋可以是多条半圆形、 三 角形、 锯齿形等环筋。
PCT/CN1994/000028 1994-04-19 1994-04-19 Ensemble de fixation pour luminaire emboitable WO1995028600A1 (fr)

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US08/571,893 US5704728A (en) 1994-04-19 1994-04-19 Linking assembly for an inserted-and-connected lamp pole
GB9525253A GB2294312B (en) 1994-04-19 1994-04-19 A linking assembly for an insert-linked light pole
PCT/CN1994/000028 WO1995028600A1 (fr) 1994-04-19 1994-04-19 Ensemble de fixation pour luminaire emboitable

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Application Number Priority Date Filing Date Title
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GB (1) GB2294312B (zh)
WO (1) WO1995028600A1 (zh)

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US5704728A (en) 1998-01-06

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