US3081617A - Door lock - Google Patents

Description

H. M. M KAY March 19, 1963 DOOR LOCK Filed March 2, 1961 22 I0 FIG].

INVENTOR, HARRY M. MO-KAY BY Caz w. wwol. Pour-EM ATTORNEYS Sfidlfii? Patented Mar. 159, i963 3,081,617 D-(MBR DUCK Harry M. McKay, Warrenton, Md, assignor to The Einldey Company, Warrenton, Mo a corporation of Missouri Filed ldar. 2, 1961, Ser. No. 92,954 filaims. (Ci. 70153) This invention relates generally to improvements in a door lock, and more particularly to an improved flush type door lock adapted for use on vehicle body doors, such as truck doors and the like.

it is an important objective of the present invention to realize a door lock of the type adapted to be mounted flush in a vehicle body door which is simple and durable in construction, economical to manufacture and eficient in operation.

An important objective is achieved by the provision of an improved mounting of a paddle handle in the cup member, and the disposition of a key-operated lock on the handle relative to a latch element in the cup, such structural arrangement enabling the flush type door lock to be conveniently utilized on the left or right side of a door.

Another important objective is afforded by an improved structure of a bolt-receiving channel on'the cup, and by the provision of a member in the cup that cooperates to define and enclose the bolt channel.

Still another important object is realized by the provision of a member that partially defines the bolt channel as described previously, and also provides means for hinging the handle and for latching the key-operated lock carried by the handle.

Yet another important objective is realized by providing a flush type door lock construction in which the maximum number of parts can be made of sheet metal for extreme simplicity and economy of manufacture.

Another important objective is achieved by the improved structure of a flush type door lock that enables a key-operated lock to be mounted and carried by the paddle handle, and yet protected and shielded from unwanted or unintentional access and manipulation when the handle is latched.

The foregoing and numerous other objects and advantages of the invention will more clearly appear from the following detailed description of a preferred embodiment, particularly when considered in connection with the accompanying drawing, in which:

PEG. 1 is a front elevational view of the door lock mounted in a vehicle body door;

PEG. 2 is a cross sectional view as seen along line 22 of FIG. 1;

FIG. 3 is a cross sectional view as seen along line 3-3 of HG. 1, illustrating the paddle handle as closed and locked, and

FIG. 4 is a cross sectional view similar to FIG. 3, but illustrating the paddle handle as unlocked and opened.

Referring now by characters of reference to the drawing, it is seen that the flush type door lock includes a cup element generally indicated at 1-1} which includes a back wall 11, opposed side walls 12, integral and opposed end walls 13, and a peripheral flange lid. The back wall 11 is provided with an elongate recess 15 extending lengthwise between end walls 13, yet located centrally between side walls 12.

Attached to the rear face of back wall 11 is a tubular casing 16 that covers the recess 15. The tubular casing 16 is closed at its rear end 17 and open at its front end 18.

Slidably mounted within tubular casing 16 is an elongate bolt A compression spring 21 is located within tubular casing 16, one end of spring 21 abutting the rear casing end 17 and the opposite end abutting the rear end of bolt 2% The spring 21 tends to urge the bolt 26 outwardly through the open end 18 of tubular casing 16.

When mounted in a vehicle body door 22 such as a truck door, or the like, the cup element interflts a comparable recess along one edge of the door 22 so that the peripheral flange 1d lies flush with the outer door surface. The side door jamb 23 is provided with a keeper notch 24 into which the outer end of bolt 2% extends when the door 22 is closed. As is usual, the outer end of bolt 20* is provided with a rearwardly curving cam face 25 which is adapted to engage the side door jamb 23 when the door is closed so as to urge the bolt Zil inwardly of tubular casing 16 against the loading of spring 21. When the bolt 2% is aligned with keeper notch 24, the spring 21 operates to plunge the bolt 2% into notch 24. The bolt 2%} then retains the door in its closed position.

The bolt 2%) is provided with a recess 25 that communicates with the recess 15 formed in back wall 11 of cup element 19. The bolt recess 26 is partially defined by a rear end abutment 27. The purpose and functional advantages adorded by the bolt recess 26 and abutment 27 will become fully apparent upon later description of parts.

A U-shaped mounting plate 3% is located within the cup element it The U-shaped mounting plate 30 includes a web 31 attached to the back wall 11 in a position to cover the back wall recess 15 immediately adjacent the compression spring 21 and the rear portion of bolt 20. The mounting plate 3d also includes an outwardly projecting latch flange 32 that is formed integrally with web 31 and extends substantially the entire width between side walls 12 of cup element id. The latch flange 32 is provided with a slot 33 which constitutes a keeper as will later appear.

The mounting plate 3% also includes a front hinge flange 34 formed integrally with web 31 and extending outwardly substantially to the outer rim of cup element 10. The hinge flange 34 extends transversely between the side walls 12. of cup element It and is provided with a rolled bead 35 located closely adjacent one of the end walls 13 of cup element ll Thus it is seen that the mounting plate 30 substantially covers the recess 15 formed in the back wall 11.

A paddle handle 36 formed of a flat sheet material is provided with a front rolled edge 37 that is swivelly mounted on the hinge flange 34. In its closed position, the paddle handle 36 overlies the U-shaped mounting plate 39, the handle abutting the outer end of latch flange 32 and extending beyond such latch flange '32 toprovide a lip 40 at its rear margin adapted to be gripped by an operators fingers when inserted into the cup element 16* through the space provided between the one end wall 13 and the lip 40.

As is best seen in FIGS. 1 and 2, the paddle handle 36 extends substantially the entire width between the side walls 12 of cup element 10. More particularly, the sides of the paddle handle 36 are each provided with a downturned flange 41 closely adjacent one of the side walls 12, the down-turned handle flange 41 extending between the latch flange 32 and the hinge flange 34 of the U-shaped mounting plate 3!).

Attached to the inner face of paddle handle .36 is an inwardly projecting tongue 42, the tongue 42 extending through a narrow slot 43 formed in the U-shaped mounting plate 39 and extending through the back plate recess 15 into the bolt recess 26. As is best seen in FIGS. 3 and 4, the tongue 42 engages the bolt abutment 27 and operates selectively to extend or retract the bolt 20 upon swing movement of paddle handle 36.

Secured to the paddle handle 36 is a key-operated lock 44 which is located within the mounting plate 30 when the paddle handle 36 is closed. The key-operated lock 44 includes a latch arm 4-5 that is adapted to interfit the latch slot 33 in the latch flange 32 when the look 44 is actuated by a key to a locked position.

A pair of bolts 46 are located between the latch flange 32 and hinge flange 34, and are utilized to secure the mounting plate St} to the back wall 11 of cup element It). The bolts 46 extend through the web 31 of the mounting plate 30, extend through the back wall 11, and can be utilized to fix the unit to the vehicle body door 22 as is shown in FIGS. 3 and 4. It will be readily apparent that when the paddle handle 36 is closed and locked, access to the bolt 46 is absolutely precluded.

It is thought that the operation and functional ad vantages of the flush type door lock has become fully apparent from the foregoing detailed description of parts, but for completeness of disclosure, such operation will be briefly described. It will be assumed that lock 44 is unlatched so as to permit a free swinging movement of paddle handle 36 and that the door is initially closed as is shown in FIG. 3.

First, to open the vehicle door 22, the operator merely grips the lip 4b of paddle handle 36 and pulls outwardly to swivel the front margin 37 on the hinge flange 34 of the mounting plate 30. As the paddle handle 36 swings outwardly, the tongue 42 engages the bolt abutment 27 and moves the bolt 2t) rearwardly into the tubular casing 16 against the loading of the compression spring 21 until the bolt end 25 clears the keeper notch 24. The vehicle body door 22 then swings open upon continued pulling by the operator on the paddle handle 36.

To close the door, the operator can merely slam the door shut without touching the paddle handle 36. As the cam face 25 of the bolt end 20 engages the side door jamb 2 3, the bolt 2% is cammed inwardly into retracted position. When the bolt 20 is aligned with the keeper notch 24, the spring 21 urges the bolt 2t] outwardly into interfitting lock position. The paddle handle 36 does not move at all because of the lost motion provided between the bolt 20 and tongue 42 as a result of the length of bolt notch 26.

However it will be realized that the operator can condition the lock himself in order to close the door merely by reversing the sequence of steps previously described. In other words, the operator swings the paddle handle 36 outwardly to the position illustrated in FIG. 4 in order to retract the bolt 2% fully within the tubular casing 16. Then, while holding the paddle handle 36 in this position, the operator can close the door, and when fully closed, can release the handle 36 so that the spring 21 urges the bolt 20 outwardly into the keeper notch 24. Simultaneously, the spring 21 acting through the bolt 20 and tongue 42 swings the paddle handle 36 to its closed position as shown in FIG. 3.

To lock the vehicle door 22 positively in its closed position, the lock 4-4 is conditioned by a key to move the lock element 45 into slot 33 formed in the latch flange 32. When so conditioned, the paddle handle 36 cannot be swung open, and consequently, the bolt 20 cannot be moved out of the keeper notch 24.

It is clear that this flush type door lock is virtually tamper proof. When the paddle handle 36 is closed and is locked in such closed position by lock 44, it is seen that access to the body of the cylinder type lock 44, access to tongue 42, access through the back wall recess 15 and access to the bolt 20, all are prevented by the particular structural arrangement of the mounting plate 39 and the paddle handle 36 within the cup element 10. The unit can be conditioned for opening and closing the body door 22 simply upon moving locking element 45 out of operative engagement with the latch flange 32 by actuating the lock 4-4 with an appropriate key.

Although the invention has been described by making detailed reference to a single preferred embodiment, such detail is to be understood in an instructive, rather than in an restrictive sense, many variants being possible within the scope of the claims hereunto appended.

I claim as my invention:

1. A door lock comprising a cup element having a back wall, the back wall being provided with a recess, a guide means on the rear of the back wall, a bolt in said guide means and overlapping said recess, a hinge flange attached in the cup element at one end of the cup element and extending substantially the width of the cup element, a paddle handle hingedly mounted on said hinge flange, means connected to said handle extending through said recess to engage the bolt for bolt actuation, a latch flange attached in the cup element and disposed adjacent the free end of the handle, the latch flange extending substantially the width of the cup element, and a key-operated lock supported by the handle, the said key-operated lock selectively engaging the latch flange to retain the handle in a closed position, the said key-operated lock being located between the handle and back wall and located between the hinge flange and said latch flange so as to be substantially shielded.

2. A door lock comprising a cup element having a back wall, the back wall including an elongate recess, a tubular guide means on the rear of said back wall and communicating with said recess, said guide means having an end opening, a bolt slidably mounted in said guide means and extensible through the end opening, the bolt including an abutment accessible through said recess, a hinge flange secured to the back wall at one end of the cup element and extending substantially the width of said cup element across one end of said recess, a latch flange secured to the back wall and extending substantially the width of the cup element beyond the other end of said recess, a paddle handle hingedly attached to the top of the hinge flange, said handle normally extending over the recess and projecting over and close to the top of the latch flange, a tongue connected to the handle and extending through the recess to engage the bolt abutment, and a key-operated lock carried by the handle and normally located in the cup element between said flanges in shielded relation, the keyoperated lock including an element selectively engageable with the latch flange to retain the handle in a closed position.

3. A door lock comprising a cup element having a back wall, the back wall being provided with an elongate recess, a tubular guide means on the rear of said back wall and communicating with said recess, a bolt slidably mounted in said guide means, a substantially U-shaped plate member including a hinge flange at one end, a latch flange at the other end and an interconnecting web, the U-shaped plate member being secured to the back wall with the web overlying the recess, a paddle handle hingedly attached to the hinge flange and extending over the latch flange, means connected to the handle extending through the recess to engage the bolt for bolt actuation, and a key-operated lock carried by the handle and normally located in the cup element between said flanges, the key-operated lock includi ing an element selectively engageable with the latch flange to retain the handle in a closed position. 4. A door lock comprising a cup element having a back i wall, the back wall including a recess, a tubular guide 1 member on the rear of said back wall and communicating with said recess, a bolt reciprocatively mounted in said guide means, the bolt including an abutment accessible through said recess, a substantially U-shaped plate member having opposed flanges extending substantially the width of the cup element and a web, the Web being connected to the back wall, a paddle handle hingedly connected to the top of one flange and normally extending close to and across the top of the other flange, a tongue attached to the handle and extending through said recess into engagement with the bolt abutment for bolt actuation upon hinged movement of said handle, and a keyoperated lock mounted on said handle and disposed in said cup element between said flanges in shielded relation, the

1 a 5 said key-operated lock including an element selectively engaging the said other flange to retain the handle in a closed position.

5. A door lock comprising a cup element adapted to fit into a door with its open front presented outwardly with respect to one face of the door, the cup element having a back wall provided with a recess, a tubular guide means on the rear of said back wall and communicating with said recess, said guide means having an end opening, a bolt slidably mounted in the guide means and extensible through the end opening into locking position, spring means normally tending to urge the bolt into locking position, the bolt including an abutment, accessible through said recess, a substantially U-shaped plate member including a hinge flange at one end having a rolled head, a latch flange at the other end and an interconnecting web, the U-shaped plate member being secure to the back wall with the web overlying the recess and the flanges extending transversely of the open front of the cup, a paddle handle hingedly mounted on the head of said hinge flange and extending over the end of said latch flange, the paddle handle including side flanges extending between the hinge flange and the latch flange, a tongue connected to the handle and extending through the U-shaped plate member and through said recess into engagement with the bolt abutment for bolt actuation, the said latch flange being provided with a slot, and a key-operated lock carried by the handle and located in the cup element between said hinge and latch flanges, the key-operated lock element including an arm selectively engageable in the slot of the latch flange to retain the handle in the closed position.

References Cited in the file of this patent UNITED STATES PATENTS 2,055,688 Halinka Sept. 29, 1936 2,642,300 Pelcin June 16, 1953 2,987,908 Pelcin June 13, 1961

Claims (1)

1. 3. A DOOR LOCK COMPRISING A CUP ELEMENT HAVING A BACK WALL, THE BACK WALL BEING PROVIDED WITH AN ELONGATE RECESS, A TUBULAR GUIDE MEANS ON THE REAR OF SAID BACK WALL AND COMMUNICATING WITH SAID RECESS, A BOLT SLIDABLY MOUNTED IN SAID GUIDE MEANS, A SUBSTANTIALLY U-SHAPED PLATE MEMBER INCLUDING A HINGE FLANGE AT ONE END, A LATCH FLANGE AT THE OTHER END AND AN INTERCONNECTING WEB, THE U-SHAPED PLATE MEMBER BEING SECURED TO THE BACK WALL WITH THE WEB OVERLYING THE RECESS, A PADDLE HANDLE HINGEDLY ATTACHED TO THE HINGE FLANGE AND EXTENDING OVER THE LATCH FLANGE, MEANS CONNECTED TO THE HANDLE EXTENDING THROUGH THE RECESS TO ENGAGE THE BOLT FOR BOLT ACTUATION, AND A KEY-OPERATED LOCK CARRIED BY THE HANDLE AND NORMALLY LOCATED IN THE CUP ELEMENT BETWEEN SAID FLANGES, THE KEY-OPERATED LOCK INCLUDING AN ELEMENT SELECTIVELY ENGAGEABLE WITH THE LATCH FLANGE TO RETAIN THE HANDLE IN A CLOSED POSITION.

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