JP4573853B2 - Push button cylinder lock - Google Patents

Description

  The present invention relates to a push button type cylinder lock.

  For example, as a push button type cylinder lock used for a trunk compartment cover of an automobile, one described in Japanese Utility Model Publication No. 8-2349 is known. In this conventional example, the cylinder lock includes a cylinder outer in which a rotor is inserted, and a case that accommodates the cylinder outer so as to be movable in the front-rear direction. The case has a perforated partition wall at the front end, and the cylinder outer is inserted into the case from the rear end opening of the case. The cylinder outer is urged forward by a return spring accommodated in the case, and the flange is brought into contact with the perforated partition wall to prevent the cylinder outer from being detached forward. In addition, a plate-like stopper is fixed to the rear end opening of the case, and detachment from the return spring and the rear end opening of the cylinder outer is prevented.

  However, in the conventional example described above, there is a problem that the work of mounting the plate-shaped stopper against the reaction force of the return spring is troublesome and the workability is inferior. Further, the stopper can be formed of, for example, a resin block, but in this case, it causes an increase in cost.

  In addition, since the rotor must be manufactured individually according to the length of the case, there is a problem that the parts cannot be shared.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide an inexpensive push-button cylinder lock having good assembly workability and a simplified structure.

According to the present invention, the object is
A tubular housing 2;
Is inserted to freely retreat proceeds the housing 2, a push button casing 4 that is biased forward by a compression spring 3 housed in the housing 2,
Have a rotor 5 which is inserted into the push-button case 4,
A push-button cylinder lock that can be pushed downward against the urging force of the compression spring 3 ;
The housing 2 is provided with a compression spring 3 and a main portion 2b that is opened forward so that the push button case 4 into which the rotor 5 is inserted can be inserted . The compression spring 3 is provided at the rear end of the main portion 2b. A perforated bottom wall 1 is provided in contact with the rear end of
The main body 2b is formed in a cantilever shape extending rearward, and once elastically deformed by the retaining portion 7 of the push button case 4 to be inserted, the passage of the retaining portion 7 is allowed. Thereafter, the push button cylinder is provided with a locking piece 8 which is returned to its original position by elastic restoring force and is elastically locked to the retaining portion 7 and prevents the push button case 4 from being detached forward. This is accomplished by providing a lock.

  The assembly of the push button cylinder lock is performed by sequentially inserting the compression spring 3 and the push button case 4 in which the rotor 5 is inserted from the front opening of the housing 2. With the push button case 4 inserted, the locking piece 8 formed on the housing 2 is elastically deformed to allow passage of the push button case 4 and then returns to the original position by elastic restoring force. The movement of the case 4 in the separation direction is restricted.

  Therefore, in the present invention, since the assembly is completed simply by sequentially inserting the components from the front opening of the housing 2, the number of assembling steps can be reduced, and the structure is simplified and the cost is reduced. Can do.

Push button cylinder locks
A connecting rod 9 connected to the rotor 5;
The connection plate 9 is attached with a connection plate 10 that is urged in the outer circumferential direction and presses against the inner wall of the housing 2 through the push button case 4.
In addition, a moderation protrusion 10a is provided at the distal end of the connection plate 10 so as to provide a moderation feeling when the connection rod 9 reaches a predetermined rotational position by being engaged with a click groove 11 formed on the inner wall of the housing 2. It can also be configured.

  A connecting plate 9 is attached to the connecting rod 9 connected to the rotor 5, and the connecting rod 9 is connected to the push button case 4 by passing the connecting plate 10 through the fleshy portion of the push button case 4.

  Therefore, in the present invention, the connecting rod 9 and the push button case 4 can be subassembled in advance and inserted into the housing 2, so that the assembly workability can be further improved. Further, since the connecting plate 10 for connection also functions as a moderation giving component, it is not necessary to use a moderation generating part again, and the structure becomes simple.

  As is clear from the above description, according to the present invention, it is possible to obtain a push button type cylinder lock having a simple structure and good assembling workability.

  1 to 5 show an embodiment of the present invention configured for an automobile seat locking device. As shown in FIG. 5, the locking device includes a latch 13 that is engaged with and disengaged from a striker 12 a that is disposed on an upper rear surface of a seat back 12 of a rear seat that can be tilted forward of the vehicle, and a push button for operating the latch 13. When the seat back 12 is laid down with the type cylinder lock A, the access opening to the trunk room 14 is opened and the trunk room 14 can be accessed from inside the vehicle. The seatback 12 can be tilted by releasing the engagement between the striker 12a and the latch 13, and the engagement can be released by depressing the push button 15 of the push button type cylinder lock A and operating the latch 13 by the lever 6. To be done. In FIG. 5, reference numeral 16 denotes an operation cord for operating the latch 13 from the trunk room 14 side.

  As shown in FIGS. 1 to 4, the push button cylinder lock A includes a housing 2 having a mounting flange 2 a and a button assembly 17 accommodated in the housing 2. The main body 2 b of the housing 2 is formed in a cylindrical shape, and the rear end is closed by the perforated bottom wall 1. In the center of the perforated bottom wall 1, a gutter insertion hole 1 a into which a lock projection 9 a of a connecting gutter 9 described later can be inserted is provided.

  The button assembly 17 includes a push button case 4, a rotor 5 inserted into the front end portion of the push button case 4, and a connecting rod 9 disposed behind the rotor 5. The button assembly 17 is inserted from the front opening of the housing 2. The As shown in FIG. 3 (a), the push button case 4 has two detent projections 4 a and 4 a at the rear end, and the detent projection 4 a is fitted into the guide 2 c of the housing 2. As a result, relative rotation with respect to the housing 2 is restricted. As shown in FIG. 2B, the guide portion 2c is formed with a predetermined length in the longitudinal direction of the housing 2 to allow the push button case 4 to move in the longitudinal direction, and the end wall of the guide portion 2c is the push button. The stroke in the pushing direction of case 4 is determined.

  A retaining portion 7 is formed at the rear end of the detent projection 4 a so as to connect the detent projections 4 a, 4 a, and a locking piece 8 is provided in the housing 2. The locking piece 8 is formed in a cantilever shape extending rearward so as to facilitate elastic deformation, and as shown in FIG. When the button assembly 17 is inserted from the front opening of the housing 2, the retaining portion 7 eventually interferes with the climbing inclined surface 8a of the locking piece 8, and when the button assembly 17 is pushed in, the locking piece 8 is once elasticated. It is deformed to allow passage of the retaining portion 7, and after the retaining portion 7 has passed, it returns to its original position again by elastic restoring force. Thereafter, since the retaining portion 7 is restricted from moving forward by the vertical end surface 8b of the locking piece 8, the button assembly 17 cannot be detached from the front opening.

  The connecting rod 9 has a connecting head portion 9b and a shaft portion 9c having a diameter smaller than that of the connecting head portion 9b, and a locking projection portion 9a protrudes laterally from the shaft portion 9c. As will be described later, the connecting rod 9 is rotatable relative to the push button case 4, and the connecting rod 9 is rotated so that the lock projection 9a is perforated as shown in FIG. When it is possible to insert the button assembly 17 into the wall insertion hole 1a of the wall 1, the button assembly 17 can be pushed (unlocked). On the other hand, as shown by a chain line in FIG. 3B, when the connecting rod 9 is in a rotational position other than the above (locked state), the locking projection 9a is inward from the peripheral wall of the flange insertion hole 1a. The push-in operation is prohibited by interfering with the stopper 1b raised upward. The housing 2 accommodates a compression spring 3 whose both ends are in contact with the end of the connection head 9b of the connection rod 9 and the perforated bottom wall 1 of the housing 2, and urges the button assembly 17 forward.

  Further, a connecting plate 10 is attached to the connecting rod 9. As shown in FIG. 3A, the connecting plate 10 is a plate-like body accommodated in a plate insertion groove 9d formed in the connecting rod 9, and is urged in the protruding direction by a compression spring 9e. On the other hand, a plate through groove 4 b is formed in the push button case 4, and the connecting plate 10 can be mounted in the push button case 4 so as not to be removed by passing the connecting plate 10 through the plate through groove 4 b. The plate through groove 4b is extended in the circumferential direction so that the connecting rod 9 can rotate relative to the push button case 4 by at least a predetermined angle (90 ° in the illustrated example).

  Further, a V-shaped moderation protrusion 10a is formed at the protruding end of the connecting plate 10, and a click groove 11 into which the moderation protrusion 10a can be fitted is formed on the housing 2 side. The click groove 11 is provided corresponding to the start and end of the rotation stroke in the push button case 4 of the connecting rod 9, and the click groove 11 on the side corresponding to the end of the rotation stroke is a button as shown in FIG. The assembly 17 is extended in the longitudinal direction of the housing 2 with a length corresponding to the length of the stroke to which the assembly 17 is pushed.

  A plurality of tumblers 5a are attached to the rotor 5 and can be rotated relative to the push button case 4 by a key plate on which a predetermined unlocking code is formed. As shown in FIG. 1, a stopper tumbler 18 that is urged in the protruding direction is attached to the end portion of the rotor 5, and a tumbler locking projection 4 c is provided on the inner wall of the push button case 4. When the rotor 5 is inserted from the front opening of the push button case 4, the stopper tumbler 18 comes into contact with the tumbler locking projection 4 c, and then once enters the rotor 5 against the urging force, and then protrudes again to protrude the tumbler locking projection. After that, the detachment of the rotor 5 from the push button case 4 is restricted.

  A fitting projection 5b that can be fitted to the front end surface of the connecting rod 9 is provided on the end surface of the rotor 5, and when the rotor 5 is inserted into the push button case 4, the rotor 5 and the connecting rod 9 are rotated in the rotational direction. Connected.

  Next, a method for assembling the push button type cylinder lock A will be described. In assembly work, first, the push button case 4 and the connecting rod 9 are sub-assembled. The sub-assembly operation can be performed simply by inserting the connecting head 9b of the connecting rod 9 from the rear opening of the push button case 4, and the stopper flange 9f of the connecting head 9b abuts on the end surface of the push button case 4. When the connecting rod 9 is pushed in, the connecting plate 10 enters the plate through groove 4b and the detachment of both is regulated. Next, when the rotor 5 is pushed in from the front opening of the push button case 4, the rotor 5 is accommodated in the push button case 4 so as not to be detached by the action of the stopper tumbler 18, and the button assembly 17 is completed.

  Thereafter, after the compression spring 3 is inserted into the housing 2, the locking piece 8 and the retaining portion 7 are locked by simply pushing the button assembly 17 through the front opening of the housing 2. 17 does not detach from the housing 2. In this state, the end portion of the connecting rod 9 is slightly protruded from the end surface of the housing 2, and the lever 6 is fixed to the end portion using the E-type retaining ring 19 or the like, and the assembling work is completed.

  The lever 6 fixed to the terminal portion of the button assembly 17 also functions as a retaining member for the button assembly 17 and is pulled out from the housing 2 even when a large force is applied to the button assembly 17 in the detaching direction thereafter. I can't do that.

  In the above-described embodiment, the lever 6 is also used as a retaining member. However, the retaining member 8 and the retaining member 7 can be used to prevent the retaining member from being detached.

  After the assembly is completed, when the rotor 5 is rotated to the unlocked position, the moderation protrusion 10a of the connecting plate 10 is locked to the click groove 11 to give a sense of moderation to the user. In this state, the lock projection 9a of the button assembly 17 is aligned with the collar insertion hole 1a, and the push button assembly 17 can be pushed in. When the rotor 5 is rotated again, the moderation protrusion 10a is locked in the click groove 11 to notify the user that the rotor 5 has been rotated to the locked position. The key plate can be inserted into and removed from the rotor 5 only when the rotor 5 is in the locked position, and the user can know the key insertion and removal position at the same time.

It is the 1A-1A sectional view taken on the line of Fig.2 (a). It is a figure which shows this invention, (a) is a front view, (b) is a 2B direction arrow directional view of (a), (c) is the 2C-2C sectional view taken on the line of (a). 1A is a cross-sectional view taken along line 3A-3A in FIG. 1, and FIG. 3B is a cross-sectional view taken along line 3B-3B in FIG. FIG. 3 is a cross-sectional view taken along line 1A-1A of FIG. 2A in a state where the push button assembly is pushed in. It is explanatory drawing which shows the principal part of the locking device of a vehicle seat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Perforated bottom wall 2 Housing 3 Compression spring 4 Push button case 5 Rotor 6 Lever 7 Retaining part 8 Locking piece 9 Connecting rod 10 Connecting plate 10a Moderation protrusion 11 Click groove

Claims (3)

A tubular housing;
Is inserted to freely retreat proceeds the housing, the push button case is urged forwardly by a compression spring which is accommodated in a housing,
Have a rotor that is inserted into the push-button case,
A push-button cylinder lock formed so as to be capable of being pushed down toward the rear against the urging force of the compression spring ,
The housing is provided with a compression spring and a main portion that is opened forward so that a push button case into which the rotor is inserted can be inserted, and a hole that abuts the rear end of the compression spring at the rear end of the main portion. There is a bottom wall,
In addition, the main body portion is formed in a cantilever shape extending rearward, and once elastically deformed by the retaining portion of the push button case to be inserted and allowed to pass through the retaining portion, the elastic portion is restored. A push-button cylinder lock provided with a locking piece that returns to its original position by force and is elastically locked to the retaining portion and prevents the push-button case from being detached forward. The locking piece is provided with an inclined surface ride on the rear end,
The push button case has two anti-rotation protrusions that fit into the guide portion of the housing and restrict relative rotation with respect to the housing,
The push button type cylinder lock according to claim 1, wherein the retaining portion is formed so as to connect between the non-rotating protrusions.   The guide portion is disposed on both sides of the locking piece so as to sandwich the locking piece, is formed with a predetermined length in the longitudinal direction of the housing, and allows the push button case to move in the longitudinal direction, and the end wall The push button type cylinder lock according to claim 2, wherein a stroke in a pushing direction of the push button case is determined by the above.

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