US 2674334 A
Description (OCR text may contain errors)
April 6, 1954 E. c. UBERBACHER 2,674,334
AUTOMATIC LOCK FOR AUTOMOBILE DOORS Filed June 6, 1951 2s Fl'g- 4 4 I56 //4 26 INVENTOR.
/58 BY M406.
Patented Apr. 6, 1954 AUTOMATIC LOOK FOR AUTOMOBILE DOORS Edward C. Uberbacher, Ridgefield, Conn.
Application J unc 6, 1951, Serial No. 230,146
Claims. (Cl. 180-82) This invention comprises novel and useful improvements in looking systems and more particularly pertains to a vehicle locking system whereby the doors will be locked whenever the vehicle is in motion.
An important object of this invention is to provide a vehicle locking system whereby the doors will be locked when the vehicle is in motion, and unlocked when the vehicle is stopped, to thereby prevent the accidental opening of the .doors when the vehicle is traveling.
Another important object of this invention is to provide a vehicle locking system, in accordance with the foregoing object, together with a signal mechanism for indicating when the locks are in proper locking position, which signals are actuated in response to the position of the movable locking member.
An important feature of this invention resides :in the provision of a locking system including an electromagnetically operated lock having a movable locking member with a means for energizing the lock, a switch for controlling energization of the lock, together with a mechanism responsive to motion of the vehicle for closing the switch and energize the locking mechanism.
Another feature of this invention resides in the provision of a locking system, in accordance with the foregoing feature, together with a mechanism for operatively connecting the vehicle motion responsive means to the speedometer drive cable, whereby the motion responsive means is actuated in response to driving rotation of the cable.
A further feature of this invention resides in the provision of a locking system which includes a solenoid having a locking member movably mounted thereon and electrically insulated therefrom, an electrically insulated keeper for receiving the locking member; signal means operatively electrically connected to the member to be actuated in response to electrical grounding thereof, an electrically grounded finger disposed in the path of movement of the member as the latter moves into locking position, and a stop means in the keeper for retaining the memher out of contact with the finger, whereby the member will be electrically grounded whenever it is actuated into its locking position, and does not move into the electrically insulated keeper therefor.
These, together with various ancillary objects and features are attained by this device, a preferred embodiment of which has been illustrated in the accompanying drawings, wherein:
Figure l is a fragmentary perspective elevation view of a vehicle having the locking system mounted thereon;
Figure 2 is a longitudinal sectional view of one of the electromagnetioally actuated locks;
Figure 3 is a longitudinal sectional view of the speed responsive assembly for controlling actuation of the locks; and
Figure 4 is a schematic wiring diagram of the locking system.
Reference is now made more specifically to the accompanying drawings wherein a portion of a vehicle iii is illustrated, which vehicle includes a dashboard l2 and a door i swivelly mounted on the vehicle for movement into and out of registry with the door frame it. As is conventional, a speedometer i8 is mounted on the dashboard I2 and is operativcly connected to the ground engaging Wheels of the vehicle, by a Bowden wire 20, and which wire includes a housing 22 and a drive cable M. as is best shown in Figure 3.
The electromagnetic lock, designated generally by the numeral 26, includes a U-shaped bracket 28 having a web 30, and legs 32 and 3d. The leg 32 of the bracket is adapted to be secured to the vehicle frame It, and is provided with an outwardly flared opening 36 in alignment with the aperture 38 in the frame. A plug do is molded or pressed into the opening 36, which plug has, for reasons which will later become apparent as the following description proceeds, an axial guide bore 42 therein. An annular contact finger 44 having an inwardly directed flange it is disposed about the periphery of the plug Ml, and is secured, or otherwise disposed in electrical contact with the leg 32 of the bracket 28, which finger is formed of an electrically conductive material.
The solenoid 48 is formed about a core 50, of electrically insulating material, which core has a plunger receiving bore 52 therein, and a counterbore 5 adjacent one end for receiving the annular finger 44, as is clearly apparent from a consideration of Figure 2. A pair of discs 505 are disposed about opposite ends of the core, and retain the windings or" the solenoid in position thereon, a suitable washer 58, of electrically insulating material, being interposed between the leg 32 of the bracket 23 and the adjacent disc.
An L-shaped support arm has one leg thereof secured, as by fastener 62, to the web 30 of the bracket 28, the other leg having an aperture 62 therein for receiving the diametrically reduced outer end of the core 50. As will be noted, the arm Bil serves to retain the adjacent disc 55 in position on the core 5%], and also serves to support the core relative to the leg 32.
A plunger 64 having a locking finger E8 on one end thereof and an axially disposed rod $8 on the other end thereof, is reciprocably disposed within the bore 52 in the core 50, with the finger B6 slidably extending through the guide bore 52 in the plug til, and through the aligned opening 38 in the frame i'B. As will be noted from a consideration of Figure 2, the inwardly directed flange 46 on the annular finger 44 is disposed in the path of movement of the plunger 64, as the latter moves into its locking position.
In order to yieldingly urge the plunger 64 out of lockin position, there is provided a coil spring 10, one end of which engages the electrically insulating washer I2 which is disposed about the core 50, and abuts the arm 60, the other end of which spring engages a stop plate 14 on the rod 68. It is contemplated that the spring I0, the stop plate I4, and the rod 68 be of an electrically conductive material so that when the plunger 64 moves into contact with the flange 46 on the finger 44, the conductor I6 which is connected by the fastener 18 to the spring III, will also be electrically grounded. An adjustable stop member 80 is carried by the leg 34 of the bracket 28, and is adapted to engage the cap 82, of electrically insulating material, on the end of the rod 68, to limit movement of the plunger 64, into its unlocking position.
A tubular keeper 84, having an end wall 86 is secured to one edge of the door I4, as by the mounting plate 88 which is molded or pressed into position on the open end thereof. The keeper is disposed in an opening 90 in the door I4, in axial alignment with the locking finger 66 on the plunger 64, which keeper has an internally threaded bore 92 for threadedly receiving an adjustable stop member 94 which is spring biased outwardly of the keeper, by a sprin member 96 which is interposed between the end wall 86 and th stop member 94. The stop member has a slot 98, or other type of keyway, to permit adjusting of the same. It is contemplated that the stop 94 be so positioned as to engage the end of the locking finger 66, and maintain the plunger 64 out of engagement with the contact finger 44.
A signal I (see Figure 4) which may be a warning light, or buzzer, is electrically connected by a conductor I02 to the ignition switch I04, which switch is otherwise connected to the source of power I06. The signal I00 is also connected, by a conductor I08 to the conductors 16 which are electrically connected to the plungers 64, in the manner previously mentioned, whereby the signal will be actuated whenever the plunger 64 comes into electrical contact with th frame of the vehicle. Thus, when the door I4 is open, the stop 94 will be ineffectual to limit movement of the plunger into its locking position, whereby the plunger will contact the finger 44 and actuate the signal I00. Similarly, when the door is only partially ajar, the finger 66 will contact the portion of the door I4 adjacent the keeper, and complete the electrical circuit to ground, thereby energizing the lamp I00.
As it is contemplated that the electromagnetic locks 26 be energized, only when the vehicle is in motion, there is provided an assembly I I0, for controlling actuation of the locks, in response to movement of the vehicle I0. For this purpose, there is provided a housing II2 having a removable bottom H4 fastened thereto, as by fasteners H0, and which housing has a shaft H8 journaled in the top and bottom walls thereof, as is best shown in Figure 3. A normally closed switch I20, having an actuating finger I22, is secured to the bottom wall II4 as by the supporting flange I24. A plurality of elongated resilient strips I26, each having one end thereof secured as by fasteners and blocks I28 and I30, respectively, to one end of the shaft IIB, the other end of each 0! the strips being secured, as by fasteners I32, to a sleeve I34 which is slidably disposed on the shaft II8. Weights I36 are secured by fasteners I38 to intermediate portions of the strips I26, which weights are adapted to be centrifugally actuated outwardly in response to rotation of the shaft II8, to thereby reciprocate the sleeve I34 on the shaft. A collar I40 is carried by the sleeve I34, for movement therewith, which collar engages the switch actuating finger I22 whenever the shaft I I8 is not rotating, to maintain an open circuit, and which collar is movable with the sleeve I34 out of contact with the finger I22, whenever the shaft H8 is caused to rotate, by means to be hereinafter described.
It will be appreciated that any suitable means may be provided for rotating the shaft H0 in response to movement of the vehicle I0, without departing from the scope of this invention. A convenient drive is best illustrated in Figure 3 and includes a casing I42 which is mounted upon the top wall of the housing H2, in any desired manner, the sheath 22 of the Bowden wire 20 being secured to one wall thereof, with the drive cable 24 extending through an aperture I44 in the opposing wall thereof. A sleeve I46 is secured to one wall of the casin I42, in alignment with the openin I44 therein, which casing is otherwise secured to the speedometer housing, and serves to support the assembly H0. Alternatively, any suitable bracket may be provided for mounting the assembly IIO on the vehicle dashboard or the like.
The drive cable 24 has a bevel gear I48 mounted thereon, which gear is in meshing engagement with a second bevel gear I50 carried by the outer end of the shaft IIB. It will thus be appreciated that whenever the speedometer drive cable 24 is rotated, in response to movement of the vehicle ground engaging wheels, the shaft II8 will also be rotated so as to move collar I40 operatively connected thereto out of engagement with the finger I22 of the switch I20, to thereby permit the switch to move into its circuit closing position.
As is best shown in Figure 4, the switch I20 is connected in series with a manual switch I52. by a conductor I54, which manual switch is connected, as conductors I55, to the electro-magnetically operated locks 25, which locks are otherwise connected to the ignition switch I04. as by conductor I58.
In operation, the ignition switch I04 is first closed so as to render the energy of the battery I05 available to the signal I00, and to the electromagneticall operated locks 26. Additionally, the manual switch I52 is moved into its closed position, it being understood that the manual switch I52 is provided only for tie-actuating the solenoids if it should, for any reason, he found desirable to do so. When the vehicle i stopped, the collar I40 will depress the finger I22 on the switch I20, and maintain an open circuit, whereby the spring 'I0 may yieldingly retain the plunger 64 into its unlocking position. However, whenever the vehicle is in motion, the speedometer drive cable 24 will rotate the shaft IIB, which will cause the centrifuga1ly actuated weights I36 to move the collar I40 out of contact with the finger I22, and thereby complete electrical circuit to the electromagnetically operated locks 26.
If the door I4 is in its closed position, when the locks are actuated, the locking finger 66 on the plunger 64 will move into the keeper 84, and
abut the stop 94 disposed therein. This stop will retain the plunger out of contact with the finger M and, sinc the plunger will then be electrically insulated from ground, the signals will not be energized. If, however, the door is open, the plunger *i l will move until it contacts the finger 44, thereby completing the electrical circuit to ground, and energizing the signal I00. Further, if the door is only slightly aiar, the looking finger 56 will contact the edge of the frame adjacent the keeper, to thereby establish an electrical circuit to ground, and actuate the signal I00.
Although. the centrifugal switch is shown as being connected at the speedometer end of the cable, it can also be connected to the other end between the cable and drive shaft.
As it is believed that the construction and operation of the device will be readily understood from a consideration of the foregoing specification and accompanying drawing, further description is believed unnecessary. However, since numerous modifications will readily occur to those skilled in the art after a consideration of the foregoing description, it is not intended to limit the invention to that shown and described but all suitable modifications may be resorted to, falling within the scope'of the appended claims.
Having described the invention, what is claimed as new is:
1. A vehicle door locking system comprising a solenoid adapted to be mounted on the frame of a vehicle, said solenoid having a movable looking member mounted thereon and electrically insulated therefrom, said member having a, locking position and an unlocking position, means for energizing said solenoid to move said movable member into its locking position, switch means controlling energization of said solenoid, an electrically insulated keeper adapted to be mounted on the door of the vehicle, said keeper being movable in a direction transverse to the direc tion of movement of said locking member and being adapted to be axially aligned with said locking member when the door is in fully closed position and receiving said member when in its locking position, signal means, means electrically connecting said signal means to a source of power and to said locking member, and means disposed in the path of movement of said member as the latter moves toward its locking position for electrically grounding said member to activate the signal means when said member i not aligned with said keeper, and stop means in said keeper for limiting movement of said member and retaining the latter out of contact with said member grounding means when said member is in looking position in said keeper.
2. The combination of claim 1 including spring means yieldingly urging said member into its unlocking position.
3. A vehicle door locking system comprising a solenoid having a movable locking member mounted thereon and electrically insulated therefrom, said member having a locking position and an unlocking position, means for energizing said solenoid to move said movable member into its locking position, switch means controlling energization of said solenoid, an electrically insulated keeper for receiving said member when in its locking position, said keeper being movable in a direction transverse to the direction of movement of said member into an out of alignment with said member, signal means, means electrically connecting signal means to a source of power and to said locking member, and means dis osed in the path of movement of said membe: the latter moves into its locking position for electrically grounding said member t activate said signal means when said keeper is out of alignment with said member, and stop means in keeper for limiting movement of said member and retaining the latter out or contact with said member grounding means when said keeper is in alignment with. said member.
=1. In a vehicle door locking mechanism, a substantially U-shaped mounting bracket having first and second leg portions and a web joining leg portions, said first leg portion having an opening therein, a plug fitted in the opening and having a guide bore, an annular contact finger about the plug and having an inwardly directed flange disposed over one end of the plug, said finger contacting said first leg portion, a core having one end receiving the plug and finger therein, a support arm secured to the web and supporting the other end of the core, a solenoid formed about the core, a plunger slidably received in the core, a locking finger secured to one end of the plunger and slidably received in the guide bore of the plug, said flange extending radially inwardly of the inner periphery of said core to be engaged by said plunger when the solenoid is energized, a rod fixed to the other end of said plunger, means engaging the rod and urging the plunger and rod toward the said second leg portion, and a stop carried by said second leg portion limiting sliding movement of the plunger and rod toward said second leg portion.
5. In a vehicle door locking mechanism, a substantially U-shaped mounting bracket having first and second leg portions and a web joining said leg portions, said first leg portion having an opening therein, a plug fitted in the opening and having a guide bore, an annular contact finger about the plug and having an inwardly directed flange disposed over one end of the plug, said finger contacting said first leg portion, a core having one end receiving the plug and finger therein, a support arm secured to the web and supporting the other end of the core, a solenoid formed about the core, a plunger slidably received in the core, a locking finger secured to one end of the plunger and slidably received in the guide bore of the plug, said flange extending radially inwardly of the inner periphery of said core to be engaged by said plunger when the solenoid is energized, a rod fixed to the other end of said plunger, a conductive plate on the rod, a conductive ring about the core engaging said second leg portion, a conductive coil spring about the rod and biased between the plate and the ring and urging the plunger and the rod toward the second leg portion, a stop carried by the second leg portion limiting sliding movement of the plunger and rod toward the second end portion, and a ground conductor connected to the ring.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,216,300 Farmer Feb. 20, 1917 2,139,193 Lamothe et al Dec, 6, 1938 2,189,748 Wilson Feb. 6, 1940 2,339,170 Jacobs Jan. 11, 1944 2,369,713 Burgard Feb. 20, 1945 2,475,178 Church July 5, 1949 2,527,352 Christian Oct. 24, 1950