US2716567A - Door lock - Google Patents

Description

Aug. 30, 1955 Filed Feb. 25, 1955 Huh! J. A. TURCOTT DOOR LOCK 2 Sheets-Sheet 1 INVENTOR. Jase 4 4. TURCOTT 4 710A ms United States Patent DOOR LOCK Joseph A. Turcott, Detroit, Mich.

Application February 25, 1953, Serial No. 338,750

Claims. (Cl. 232-144) It is the further object of this invention to provide a magnetically operated device for effecting intermittent opening and closing movements of a latch bolt between a door and door jamb.

These and other objects will be seen from the following specification and claims in conjunction with the appended drawings, in which:

Fig. l is a fragmentary elevational view of a vehicle dashboard illustrating signal lights and switch for a remote electrically operable door latching device for a vehicle.

Fig. 2 is a fragmentary broken away partially sectioned side elevational view of the interior of a door within which the latching mechanism is mounted, being a section taken on line 22 of Fig. 3.

Fig. 3 is a section taken on line 33 of Fig. 2; and

Fig. 4 is a fragmentary wiring diagram of the electrical connections for the present door latching device.

It will be understood that the above drawings illustrate merely a preferred embodiment of the invention, and that other embodiments are contemplated within the scope of the claims hereafter set forth.

Referring to the drawings, Fig. 1 fragmentarily illus trates, for example, a portion of a vehicle door 11 and its positioning with respect to the door jamb 12; it being contemplated that the present mechanism would be just as easily adapted for the locking of any door with respect to its door jamb, such as a house door. In the present construction, the door 11 is hollow and has an inner metallic wall portion 14 and a suitable covering 13 thereon which is conventional in vehicles.

The present door latching device includes a substantially fiat plate 15, which is positioned adjacent the interior surface of wall element 14. The flat plate 15 has a pair of outturned wall elements 17 and 18 in parallel spaced relation which are transversely apertured at 19 and 19', for slidably receiving therethrough the horizontally reciprocal latch bolt 20.

One end of the bolt 20 in the dotted line position shown as 24 is cooperatively and retainingly received within the latch opening 21 formed in the door jamb 12, which opening may be bound by the bushing 22. The other dotted line position 23 illustrates the fully opened position of the latch bolt 20 disengaged from the jamb 12.

Bolt mounting blocks 25 and 26 are suitably secured to the inner surface of plate 15 and are suitably apertured to receive the lever mounting bolt 27 upon the inner end of which is pivotally mounted latch operating lever 28.

The upper end of said lever is longitudinally forked at 29 defining the central slot 30 which terminates at "ice the upper end of said lever and is adapted to slidably receive the transverse pin 31 and cooperating washer 32, which threadedly engages latch bolt 20 intermediate its ends.

The opposite end of lever 28 is longitudinally forked at 33 defining the longitudinal slot 34, which opens at the lower end of said lever for cooperatively and slidably receiving the transverse eccentric pin 35, which is threaded transversely through ratchet wheel 36 adjacent its periphery.

Said ratchet wheel has a central square opening therethrough to cooperatively receive the squared head 37 on the rotatable bolt 38, which is journaled through the bushing 41 welded to the interior surface of plate 15 as at 42.

The threaded washer 39 threadedly engages the left end portion of rotatable bolt 38 and is adapted to maintain said bolt in position against relative longitudinal movement. The bolt 38 has a transversely slotted head 40, and is positioned within a suitable opening upon the interior of the door panel to permit the manual application of a screw driver thereto.

Pawl 43 is pivotally mounted at 44 upon the plate 45 upon the outer end of the flexible support 46, which is magnetic.

Support 46 is anchored at its opposite end by the rivet 47 to the second flexible support 48, which is anchored at its free end at 49 to the support 50 secured at 51 to plate 15.

Spring 52 is connected at 53 to a portion of flexible support 46 and at its opposite end is connected to pawl 43 as at 54.

Adjustable contact bolt 55 is threaded up through support 56 secured at 57 to plate 15, and has a spring 58 interposed between the head of said bolt and said support for frictionally maintaining said bolt in the desired position of adjustment relative to flexible support 48.

Rubber stop 59 is positioned upon the opposite side of flexible support 46 and is spaced upwardly therefrom to limit upward movements of support 46. Said stop is carried by the adjustable bolt 60, which is threaded up through the support 61 suitably secured to plate 15.

Plate 62 is also anchored upon the inner surface of plate 15 as at63 and has an out-turned detent 64 cooperatively engageable with the teeth of ratchet wheel 36 for preventing counterclockwise rotation thereof and also acting as a friction stop for said ratchet wheel.

Magnetic coil 65 is supported as by the plate 71 upon the inner surface of plate 1.5 and has a conventional magnetic core to which the pawl support 46 is intermittently and magnetically responsive in the manner hereafter described.

As shown in Fig. 1, the dashboard 66 is provided with a manual switch 67 for closing the electrical circuit 69 from the battery 68 to the lead wire 70 which connects coil 71. A second lead wire 72 extends from coil 71 and joins the contact supporting plate 56. With the flexible support 48 in the position shown in contact with the bolt 55, the electrical circuit is completed to the flexible pawl support 46, which through the ratchet 36 completes the electrical circuit to the battery 68, which is suitably grounded to the vehicle body.

Insulation block 73 has secured thereon in horizontally spaced relation a pair of contacts 74 and 76 arranged upon opposite sides of lever 28 and secured to the insulation block 73 by the screws 75. Contact 74 is connected by lead Wire 76' to the bulb 77 in the dashboard 66, so that when the lever 28 reaches one extreme position of pivotal adjustment, as indicated in dotted lines, the electrical circuit to the bulb 77 will be completed illuminating said bulb to visibly indicate that the later bolt 20 is in the dotted line position 23 and completely disengaged from the jamb 12. Preferably, the bulb 77 is red.

Lead wire 78 is connected to the contact 76 as shown in Figs. 2 and 4, and is also joined to the bulb 79, which is suitably grounded in the vehicle dashboard 66. This latter bulb is green, for example, and will be energized when the electrically conductive lever 23 is in its other extreme position of pivotal adjustment. Consequently the bulb 79 will be illuminated when the latch bolt 20 is in its extreme locked position 24, indicated in dotted lines in Fig. 2.

Referring to Fig. 2, a plurality of screws 80 are shown for further connecting the plate 17 with a portion of the door upon which it is mounted.

Operation In operation, the user merely presses the switch button 67 to energize the magnetic coil 71. The electrical circuit through the coil and through the lead 72 to the contact 55 and thence through the supports 48 and 46 and the pawl 43 and ratchet wheel 36, will be broken just as soon as the magnetic force built up within the coil 71 is of sufficient extent as to attract thereto the pawl support 46. However, this upward movement of pawl support 46 brings the pawl 43 into operative engagement with ratchet wheel 36 to effect a slight increment of rotation in a clockwise direction. The breaking of the circuit and contact 55 with support 48 momentarily de-magnetizes coil 71 and permits the pawl support 46 to flexibly return to its initial inoperative position, with support 48 again in contact with the contact element 55.

This re-establishes the electrical circuit through the magnetic coil 71, so that in effect said coil is intermittently magnetized and tie-magnetized to thereby obtain a vibratory movement of the pawl 43. It therefore follows that this vibratory movement of pawl 43 rotating the ratchet wheel 36 will continue as long as the switch 67 is manually depressed.

When the lever 28 at its upper end has reached the dotted line position to the right in Fig. 2, the latch bolt 20 is fully disengaged from the door jamb 12 and is in position 23. Lever 28 engages contact 74 closing the circuit to bulb 7'7, and the operator can remove his finger from the switch 67 and know that the bolt is fully unlocked.

By the same arrangement, a second application of the switch 67 will eifect continued rotation of the ratchet wheel 36. By virtue of the eccentric connection 35 of lever 28 with wheel 36, it is apparent that said lever when in its left hand dotted line position, Fig. 2, of extreme movement, electrical circuit through contact 76 and bulb 79 will be completed, indicating that the bolt 20 is in locked position 24, and the switch 67 may be manually disengaged.

While the present construction illustrates the use of a single bolt operating mechanism for one door of a vehicle, it is contemplated that the present locking mechanism may be adapted to as many doors of a vehicle as is desired for operation in unison. All of the doors if desired may be locked at one moment or simultaneously unlocked as desired.

Having described my invention, reference should now be had to the claims which follow for determining the scope thereof.

I claim:

1. In combination, a support, a longitudinally reciprocal latch bolt mounted on the support, a lever pivotally mounted intermediate its ends upon said support and pivotally and slidably joined at one end to a central portion of said bolt, a power rotated wheel journaled on said support, and means eccentrically connecting said wheel to the other end of said lever for reciprocally tilting the same about its pivotal mounting for positively opening and closing said bolt.

2. In combination, a support, a longitudinally reciprocal latch bolt mounted on the support, a lever pivotally mounted intermediate its ends upon said support and pivotally and slidably joined at one end to a central portion of said bolt, a power rotated wheel journaled on said support, and means eccentrically connecting said wheel to the other end of said lever for reciprocally tilting the same about its pivotal mounting for positively opening and closing said bolt, the opposite ends of said lever being longitudinally forked for sliding connection with said bolt and wheel respectively.

3. In combination, a support, a longitudinally reciprocal latch bolt mounted on the support, a lever pivotally mounted intermediate its ends upon said support and pivotally and slidably joined at one end to a central portion of said bolt, a-ratchet wheel journaled on said support, means eccentrically connecting said wheel to the other end of said lever, and a power operated pawl intermittently engageable with said ratchet wheel for rotating the same to reciprocally tilt said lever about its pivotal mounting for positively opening and closing said bolt.

4. in combination, a support, a longitudinally reciprocal latch bolt mounted on the support, a lever pivotallymounted intermediate its ends upon said support and pivotally and slidably joined at one end to a central portion of said bolt, a ratchet wheel journaled on said support, means eccentrically connecting said wheel to the other end of said lever, a pawl intermittently engageable with said ratchet wheel for rotating the same to reciprocally tilt said lever about its pivotal mounting for positively opening and closing said bolt, a flexible vibratory support for said pawl, and a magnetic coil adapted when energized to eitect intermittent flexing movements of said support whereby said pawl rotates said wheel for reciprocally tilting said lever about its pivotal mounting.

5. In combination, a support, a longitudinally reciprocal shaft on said support, a lever pivotally mounted intermediate its ends upon said support and pivotally and slidably joined at one end to a central portion of said shaft, a ratchet wheel journaled on said support, means eccentrically connecting said wheel to the other end of said lever, a pawl intermittently engageable with said ratchet wheel for rotating the same to reciprocally tilt said lever about its pivotal mounting for positively reciprocating said shaft, a flexible vibratory support for said pawl, and a magnetic coil adapted when energized to eifect intermittent flexing movements of said support whereby said pawl rotates said wheel.

Christiansen Mar. 22, 1949v

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