JPH027155Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a lock suitable for attachment to a storage door or the like.

(Prior Art) Conventionally, this type of lock has been provided with an operation button fixing device that changes the operation button from a protruding or retracted state before being pressed to an opposite state each time a pressing operation is applied to an operation button having a finger-rest recess; A lock is known that has a bolt operated by an operating button, which is in the locked position when the operating button is in the retracted state, and is in the unlocked position when the operating button is in the protruded state (Japanese Patent Laid-Open No. 1983-1992). (See Publication No. 3773).

(Purpose of the invention) The object of this invention is to improve the conventional lock and provide a lock that operates more smoothly.

(Example) This invention will be described below based on an example shown in the drawings.

A lock body 1 made of synthetic resin has an upper half body 2 and a lower half body 3.
Therefore, both halves 2 and 3 are connected by a connecting part 4, and one lock body 1 is constructed by overlapping both halves 2 and 3 using this connecting part 4 as a bending part. .

The front side of this lock body 1 (the front means the left side in Fig. 2,
The rear refers to the right side of the figure. ) is fitted with a synthetic resin cap 6 having an opening 5, and this cap 6 allows the overlapping halves 2 and 3 to be
is prevented from opening. A rising edge 7 is formed at the periphery of the opening 5, and a decorative ring 9 having a flange 8 at the front end is fitted onto this rising edge 7. A mounting piece 11 having a notch 10 is integrally formed in the center of the upper and lower edges of the cap 6, and mounting pieces 13 having notches 12 are integrally formed in the upper and lower halves 2 and 3 so as to overlap these. By screwing the screw 14 into the door 15 through the notches 10 and 12 of the mounting piece 1,
The lock main body 1 can be attached to the door 15 via 1 and 13.

As shown in FIG. 3, a slit-shaped rectangular hole 16 is bored through the lower half body 3 in the left-right direction (referring to the left-right direction in FIG. 3), and a plate-shaped bolt 17 is inserted into this rectangular hole 16. The main body 17a of the bolt 17 is fitted with a cam groove (including holes) long in the front-rear direction.
is the bolt 1 in the center going from front to back.
In other words, it has an inclined part 18a which goes to the left as it goes further rearward from the engaging part 17b of No. 7, and parallel parts 18b at its front and rear ends. A long through hole 19 is formed in the upper wall of the rectangular hole 16 of the lower half body 3 in the front-rear direction, and the downward protrusion 21 at the rear end of the plate-shaped operating rod 20 fits into the cam groove 18 through this through hole 19. ing. With this configuration, by moving the operating rod 20 back and forth and moving the protrusion 21 back and forth along the through hole 19, the relative position between the protrusion 21 and the cam groove 18 is changed, and ultimately the bolt 17 is moved back and forth. It can be moved left and right.

Attached to the front end of the operating rod 20 is a cap-shaped metal operating button 22 with an open rear end that also serves as a handle. An annular groove 23 is formed near the front end of the side peripheral wall of the operation button 22 to make it easier to grip the operation button 22. Operation button 22
A resilient spring 24 is interposed between the lock body 1 and the front wall of the lock body 1, and the resilient spring 24 always urges the operating button 22 and the operating rod 20 to protrude forward. The outer diameter of the operation button 22 is made slightly smaller than the inner diameter of the decorative ring 9.

As shown in FIG. 2, a through hole 25 is formed at the front end of the operating rod 20, and a swing pin 2
6 is fitted, and a swing pin 26 is configured to swing left and right about this through hole 25. A locking hook 27 is bent at the free end of the swing pin 26. Near the free end of is bent upward and is away from the operating rod 20. Second
As shown in the figure and FIG. 5, the upper body 2 has an operating rod 2
A groove 28 is formed to allow the swing pin 26 to move back and forth. The locking hook 27 of the swing pin 26 is pressed by the operating rod 20 and the upper body 2
It fits into an endless guide groove 29 formed in the. As shown in FIGS. 5 and 6, this guide groove 29 has an arc-shaped outgoing path 29a and a first connecting path 29a.
9b, a second communication path 29c having a hook stop 30 at the starting end, and an arcuate return path 29d, in the listed order. Each of the channels 29a to 29d is configured such that the starting end of the channel following the terminal end thereof is deeper, and a step 31 is formed at each boundary between the channels 29a to 29d.
is designed so that it does not move in the opposite direction. More specifically, the depth of the outgoing path 29a changes so that the starting end becomes deeper and the ending end becomes shallower, the depth of the first connecting path 29b is deeper than that of the end of the outgoing path 29a, and the depth of the second connecting path 29c is deeper. Depth is 1st connection path 29
The depth of the returning path 29d changes so that the starting end is deeper than the second connecting path 29c and the ending point is shallower than the depth of the outgoing path 29a at the intersection with the outgoing path 29a. Even if the stop hook 27 tries to move in the opposite direction, it will not move due to the presence of the stepped portion 31.
It is designed not to move in the opposite direction. With the above-described configuration, when the operating button 22 in the protruding state is pushed in against the elastic force of the elastic spring 24, the locking hook 27 passes from the starting end (stopping part) of the outward path 29a to the terminal end thereof, and the first This leads to the communication path 29b. 1st
The locking hook 27 that has entered the communication path 29b tries to move forward due to the action of the resilient spring 24, but the presence of the step 31 and the operation rod 20 prevents the locking hook 27 from moving forward in the direction in which it enters the guide groove 29. Due to the fact that the locking hook 27 is
9a, it moves along the first communication path 29b and reaches the stop 30 at the starting end of the second communication path 29c. The locking hook 27 is biased by the resilient spring 24 in a direction in which the operating rod 20 protrudes forward, so that the locking hook 27 engages with the stop portion 30 and stops. In this way, the operating rod 20 can be stopped at the retracted position. In this state, when the operation button 22 is pushed in against the elastic force of the elastic spring 24, the locking hook 27 reaches the return path 29d through the second communication path 29c, and is moved through the return path 29d by the action of the elastic spring 24. After entering the outward path 29a, it reaches its starting end and stops. In this state, the operating rod 20 is again in the protruding state. As is clear from this explanation, the operation button 22
By the pressing operation, the operating rod 20 alternately moves between the retracted position and the extended position. When the operating rod 20 is retracted, the engaging portion 17b of the bolt 17 protrudes from the lock body 1.

The lock has a receiver 32 into which the engaging portion 17b is fitted.

Next, a method of attaching the lock will be explained.

A through hole 33 is formed at a set position on the free end of the door 15, and the decorative ring 9 is fitted into the through hole 33, and the operating button 22 is fitted into the decorative ring 9, so that the lock body 1 is attached to the door. 15, and insert the screw 14 through the notches 10 and 12 to the door 1.
5, the lock body 1 can be attached to the door 15. Note that at this time, in the state where the operation button 22 is retracted, the operation button 22
The thickness of the door 15, the thickness of the cap 6, etc. are set in advance so that the front surface of the door 15 and the front surface of the door 15 are flush with each other. Thereafter, with the door 15 closed, a recess 35 is formed in the portion of the side wall 34 facing the engaging portion 17b, and the receiver 32 is fitted into the recess 35 using screws 36.

Next, the function of the lock will be explained.

After closing the door 15 as shown in FIG. The operation button 22 is in the retracted position. In this state,
As shown in FIG. 4, the bolt 17 moves to the right, and its engaging portion 17b enters the receiver 32, and the door 15
to be fixed. In this state, the operation button 22
The front surface of the door 15 is flush with the front surface of the door 15.

To open the door 15, push the operation button 22 in the retracted position, and the locking hook 2 of the swing pin 26 will open.
7 reaches the starting end of the outward path 29a, the state returns to the state shown in FIG.
can be opened.

(Effect of the invention) As described above, according to this invention, the locking hook 2
7 is urged so as to contact the bottom surface of the endless guide groove 29, and a stepped portion 31 is formed on the bottom surface of the endless guide groove 29 to prevent the locking hook 27 from returning. Guide groove 2
9 can be moved smoothly, and as a result, the operation button 22 can be moved back and forth smoothly. The lock body 1 is made of synthetic resin and has an upper half 2, a lower half 3, and a connecting portion 4 connecting the upper half 2 and the lower half 3. Since the upper and lower halves 2 and 3 are stacked on top of each other with 4 as the bent part, members such as the operating rod 20 and the swing pin 26 can be inserted into the lock body 1 by overlapping the top and bottom halves 2 and 3. It is easy to assemble.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
Figure 1 is a partially fragmented front view, Figure 2 is Figure 1-
The line sectional view, Figure 3 is the line sectional view of Figure 1 - line sectional view, Figure 4.
The figure is a sectional view corresponding to FIG. 3 showing the locked state, FIG. 5 is a sectional view taken along the line of FIG. 1, and FIG. 6 is a perspective view of the guide groove. 17...Bolt, 18...Cam groove, 20...Operation rod, 21...Protrusion, 22...Operation button, 23
... Annular groove, 24 ... Resilient spring, 26 ... Swing pin, 27 ... Locking hook, 29 ... Guide groove, 30
...stop part, 31...step part.

Claims (1)

[Scope of utility model registration request] An operation button fixing device that changes the operation button 22 from a protruding or retracted state before being pressed to the opposite state each time a press operation is applied to the operation button 22 having a finger rest recess 23, and the operation button 22 changes to the retracted state. The operating button 22 is in the locked position when the operating button 22 is in the locked position and is in the unlocked position when the operating button 22 is in the protruding state.
In the lock having a bolt 17 that is operated by
A member having an endless guide groove 29 with two hook stop parts for stopping it in the protruding or retracted position, and a member having a tip locking hook 27 inserted into the endless guide groove 29, which swings left and right. Swing pin 2
6, and the endless guide groove 2
9 or the swing pin 26 is provided on the operating rod 20 of the operating button 22, and the other is provided on the lock body 1, and the locking hook 27 is attached so as to contact the bottom surface of the endless guide groove 29. Forced,
A step portion 31 is formed on the bottom surface of the endless guide groove 29 to prevent the locking hook 27 from returning. A slanted cam groove 18 is formed in the cam groove 18, and a protrusion 21 of the operating rod 20 is fitted into this cam groove 18.
The bolt 17 is interlocked with the movement of the operation button 22 through the lock body 1, and the lock body 1 is made of synthetic resin and has an upper half body 2, a lower half body 3, and the upper half body 2 and the lower half body. The lock has a connecting part 4 that connects the upper and lower halves 2 and 3, and the upper and lower halves 2 and 3 are overlapped with this connecting part 4 as a bent part.