JP5686460B1 - Key device for opening / closing member - Google Patents

Abstract

A mechanical key device that operates a plurality of slide plates built in a key casing by a one-touch operation of an operating member. A set plate 8, a release frame 21, an operating plate 24, and a lock plate 28 are slidably fitted in an axial direction inside a casing 1 of a key device having a center plate 16. Each of the center plate 16 and the movable plate group is slidably fitted. The key button 3 whose position is regulated at the protruding position and the pushed-in position is fitted into the opening. The engagement protrusion 11 of the set plate engages with the recess 25 of the front end of the lock plate, and the engagement protrusion 20 of the release frame 21 is engaged with the recess 26 of the lock plate, so that the release frame 21 is locked. For unlocking, after pressing the key button 3 of the selection key number, the set plate 8 and the actuating plate 24 may be pressed rightward by operating the operation member 2. The release plate 21 moves to the right, the key button 3 is disengaged, and the unlocking hook is released. [Selection] Figure 11

Description

  The present invention relates to a key device used between a wide range of opening and closing members such as a mailbox, a door, and a safe, and more particularly to an improvement of a key device that can be used by changing a key number by mechanical control.

A general key device that is controlled to open and close by a mechanical mechanism has a predetermined key number, and the number cannot be changed. For this reason, if the key number leaks to the outside or is stolen, it becomes necessary to change to a new key, which causes problems in terms of security and cost.
In order to solve this problem, the present inventor has developed a key device (Japanese Patent No. 4070086) that can be used by freely setting / changing the open / close key number and the number of digits using only a mechanical mechanism.
In this key device, an open / close plate, a set plate, and a reset frame are slidably overlapped in a key casing in which a key piece is removably mounted, and these members are operated by levers according to their functions. It is an excellent technology that can be used by freely changing the key number and number of digits with a typical mechanism, but with a structure in which multiple plates are manually operated independently so that each function can be demonstrated with two types of levers. For this reason, the opening / closing operation is complicated and there is a problem in usability.

Japanese Patent No. 4070086

  An object of the present invention is to provide a mechanical key device capable of operating a plurality of slide plates fitted in a key casing and performing different operations and functions in accordance with respective purposes by a simple operation. is there.

In order to solve the above problems, the key device of the present invention is provided with a plurality of through holes 4 through which the heads of the key buttons 3 are passed through the front plate 1a of the frame and an opening 6 into which the operation member 2 is fitted. The casing 1 is provided with an axial spring receiving recess 7a on the back surface thereof, and further fitted with a back cover 29 provided with an engagement hook receiving port 29a on the opening and closing main body side and a spring receiving recess 27b on the back side of the frame body. An operating member 2 having an engaging portion 2b fitted in the opening 6 of the casing 1 at the lower portion of the operating portion 2a, and having an operating piece 2c that can be displaced in the axial direction of the casing 1 protruded on the back surface thereof; A segment 3c, in which an upper locking piece 3c-1 and a lower locking piece 3c-2, which are selectively projected outward, are slidably fitted into a transverse through-hole 3b formed in the center of the shaft 3a. And a spring mechanism that urges the shaft body 3a to the outside of the passage 4 of the casing 1 and locks it in the pushing position. A plurality of key buttons 3 fitted so as to be reciprocally slidable from the top dead center position to the pushed-in position via the means 3d; an enlarged-diameter edge 9a through which the protruding side locking piece of the segment 3c fitted to each key button 3 And a reduced-diameter edge 9b for engaging the protruding-side locking piece via a tapered reduced-diameter edge 9c, and a group of elongate different-diameter openings 9 corresponding to the through-hole 4 group of the casing 1, and the operation An engagement protrusion 11 having a plate provided with an opening 10 through which the operating piece 2c of the member 2 passes and the other spring receiving recess 7b corresponding to the spring receiving recess 7a of the casing 1, and extending downward on the back surface of the plate And a set plate 8 formed so as to be slidable in the inner axial direction of the casing 1; and key buttons corresponding to the four openings of the casing 1 An opening 14 through which the engaging projections 11 on the rear surface of the set plate 8 and the set plate 8 are passed. A center plate 16 supported in parallel to the central axis direction in the casing 1; a group of long shaft passages 17 for loosely fitting key buttons corresponding to the passages 9 of the set plate 8; and the back side of the set plate 8 A through-hole 18 through which the engagement projection 11 passes is formed, and a hook-like engagement portion 19 and a back-side engagement projection 20 are integrally formed at the tip thereof via a reduced-diameter neck portion in the axial direction of the center plate 16. A release frame 21 slidably disposed along the hook; and a hook-like engagement portion 22 which is engaged with the hook-like engagement portion 19 of the release frame 21 while holding a predetermined gap at the rear end. In addition, an engagement step portion 23 that is elastically pressed toward the distal end side by an operating piece 2c on the back surface of the operation member 2 fitted to the opening portion 6 of the casing 1 and a spring receiving recess portion 12a of the set plate 8 A spring receiving recess 12b corresponding to the An operating plate 24 provided; a recess 25 for engaging the engaging projection 11 of the set plate 8 at the rear end, and a hook engaging portion 34 for engaging the engaging hook F of the opening / closing body on the side thereof And an engagement opening 26 for receiving the back side engagement protrusion 20 of the release frame 21 in the center transverse direction, and an axial direction spring receiving portion corresponding to the spring receiving recess 27b of the back cover 29 on the front end side thereof. A lock plate 28 provided with 27a so as to be slidable in the axial direction; and a shared position tuning coil spring 30 in the axial direction between the spring receiving recess 7a of the casing 1 and the spring receiving recess 7b of the set plate 8. A common synchronous coil spring 31 in the axial direction is interposed between the spring receiving recess 12a on the back side of the set plate 8 and the spring receiving recess 12b of the operation plate 24, and further, the spring receiving recess 27a of the lock plate 28 and the back Cover 29 A common synchronous coil spring 32 in the axial direction is interposed between the receiving recesses 27b.
The spring engaging means 3d of the key button 3 includes a spring locking hole 3e formed in the lower part of the key body 3a of the key button, a spring locking groove 3f formed in the side surface of the shaft 3a, and the shaft body of the key button. And a coil spring 33 that is urged toward the casing opening 4 side and is engaged with the bracket of the release frame 21 by engaging the coil spring 33 with one end locked in the spring locking hole 3e. It can be constructed by elastically stretching around.

Since the key device of the present invention has the above-described configuration, when locking, as shown in FIG. 11, the arbitrarily selected key button is pushed into the locking bottom dead center position, and the set plate is opposed to the spring. When the slider is slid to the left, the protruding side locking pieces of the segments of the non-selection button and the selection key button are sorted above and below the set plate by the taper enlarged edge of the set plate. Although not shown, when the key device is pressed against the hook on the main body side in this state and the hook is inserted into the hook receiving port 29a of the back cover 29, the release frame 21 moves to the right side of the drawing together with the lock plate 28. As a result, the selection key button that has been pushed in is unlocked and returned to its original position, so that the lower locking pieces protruding outside the selection key button are aligned at the same horizontal level as the set plate and interfere with each other. . For this reason, the operation piece rotation operation of the operation member is hindered, and the locking of the door is completed.
On the other hand, when the door is opened, the unlocking is completed only by operating the operating piece of the operating member, and the selection button is automatically returned to the original state. Therefore, the opening / closing operation of the key device is simplified, and the opening / closing key button can be freely selected / changed, so that the opening / closing control / management of the key device is remarkably improved.

Casing development plan view AA cross-sectional view of Fig. 1 Expanded rear view of casing Side view of operation member Bottom view of operation member Enlarged perspective view of the key button Top view of set plate Cross section of BB battle in Fig. 4a Top view of center plate Top view of the release frame Side view of release frame Installation diagram of release frame and key buttons Enlarged plan view of operating plate CC sectional view of Fig. 7a Sectional view along line D-D in Fig. 7a Top view of lock plate E-E cross-sectional view of Fig. 8a Lock plate side view Top view of back cover Sectional view taken along line FF in FIG. 9a Explanatory drawing of key device disassembly / assembly Longitudinal sectional view of a key device according to the present invention

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 10 is an exploded view showing the constituent members of the key device according to one embodiment of the present invention and the assembly relationship thereof, and FIG. 11 is an assembled view of the key device constituent members.
As shown in these drawings, the key device of the present invention includes a casing 1 in which a back plate 29 is fitted on the back side of the frame, a center plate 16 that is engaged and fixed in the inner axial direction of the casing 1, and the casing 1 A movable plate group consisting of a set plate 8, which is slidably fitted in the inner axial direction, a release frame 21, an actuating plate 24, and a lock plate 28, and through each of the center plate 16 and the movable plate group. A key button 3 that is slidably fitted and is slidably restricted to a projecting top dead center position and a push-in locking position; and a position-tuned coil spring 30 that is fitted between the casing front plate 1a and the set plate 8. A synchronous coil spring 31 fitted between the set plate 8 and the operating plate 24, a synchronous coil spring 32 fitted between the lock plate 28 and the back cover 29, An operating member 2 which is fitted on the front plate 1a of the single 1 includes a configuration member.

  As shown in FIGS. 1a, 1b, 1c, 10 and 11, the casing 1 has a plurality of sections in which a head of each key button 3 described later enters and exits a front plate 1a of a U-shaped frame. In addition, an opening 6 for fitting an operation member 2 to be described later is formed on the front side plate surface of the group of through holes 4 and a spring receiving recess 7a is formed on the back side of the front side. It consists of a frame, a center plate 16 is arranged in parallel to the front plate 1a in the central axis direction inside the frame, and a back cover 29 is fitted on the back side of the frame.

  As shown in FIGS. 5, 10, and 11, the center plate 16 includes an opening 13 group through which the key buttons 3 corresponding to the group 4 through the casing 1 pass, and an engagement protrusion 11 on the back surface of the set plate 8 to be described later. 11 has a projection claw 15a on the side edge of the plate, and the projection claw 15a is attached to a claw receiving portion 15b on the side surface of the casing 1, so that the inside of the casing of the casing 1 as shown in FIG. Is divided up and down.

  As shown in FIGS. 9a, 9b, 10 and 11, the back cover 29 is integrally formed with a guide frame 27 having a spring receiving recess 27b, and on the plate edge on the rear side (left side in the figure). A hook receiving port 29a for receiving the engagement hook F of the opening / closing body (the other side of the key opening / closing member) is formed.

  In the members of FIGS. 1a and 1c constituting the casing 1, reference numeral 5a is a reinforcing rib, and reference numeral 5b is a folded thin portion.

  As shown in FIGS. 4a, 4b, 4c, 10 and 11, the set plate 8 forms a group 9 of different diameter openings at a position corresponding to the passage 4 of the casing 1, An opening 10 for fitting the operation member 2 is formed, and the other spring receiving recess 7b corresponding to the spring receiving recess 7a of the casing 1 is provided on the plate surface near the tip, and between the opposing spring receiving recesses 7a and 7b. A position tuning coil spring 30 is fitted on the center plate 16 so as to be slidable back and forth along the axial direction on the center plate 16, and the tip 8 '(the right tip in the figure) is projected outside the casing 1. . The protruding tip 8 ′ is a pressing portion for sliding the casing to the inside of the casing when setting the selected key button.

  The different-diameter opening 9 of the set plate 8 is a protruding locking piece (upper locking piece 3c-1 or lower locking piece 3c-) of a segment 3c slidably fitted in a transverse through-hole 3b of a key button 3 described later. 2) Communicate with the reduced diameter edge 9b through the enlarged diameter edge 9a that passes through and the tapered reduced diameter edge 9c that engages the protruding locking piece and pushes it into the transverse through-hole 3b to project the other locking piece. In this configuration, it is formed in an elongated passage that allows a predetermined slide of the set plate 8 with respect to the key button 3.

  Further, the set plate 8 is integrally provided with an engaging projection 11 extending downward on the back surface between the different diameter opening 9 and the opening 10 and a spring receiving recess 12a corresponding to a spring receiving recess 12b of the operation plate 24 described later. The synchronous coil spring 32 is fitted between the spring receiving recesses 12a and 12b.

As shown in FIGS.6a, 6b, 6c, 10 and 11, the release frame 21 has a long axis passage 17 group of key buttons corresponding to the passage 4 group of the set plate on a flat plate surface. The set plate 8 has a through-hole 18 through which the engagement protrusion 11 passes, and a hook-shaped engagement portion 19 is provided at the tip of the set plate 8 via a reduced-diameter neck portion. An engaging protrusion 20 extending in the direction of the center plate 16 is integrally formed so as to be reciprocally slidable along the axial direction of the lower surface of the center plate 16.
Further, the release frame 21 opens the key button spring locking means 3d that is pushed and locked to the bottom dead center position. Therefore, the long shaft passage 17 is necessary for sliding the release frame 21. It is formed in a rectangle.

  As shown in FIGS. 7a, 7b, 7c, 10 and 11, the actuating plate 24 has a predetermined gap D (usually a slight gap) in the hook-like engagement portion 19 of the release frame 21 at the rear end (left end). The engaging portion 22 is engaged with the concave and convex portions while maintaining a large distance), and the distal end side (right side of the figure) is provided on the distal end side by the operating piece 2c on the lower surface of the operating member 2 fitted into the opening 6 of the casing 1. Direction) and the other spring receiving recess 12b corresponding to the spring receiving recess 12a of the set plate 8, and a synchronous coil between the opposing spring receiving recesses 12a and 12b. The spring 33 is fitted so as to be slidable in the axial direction.

  As shown in FIGS. 8a to 8c, 10 and 11, the lock plate 28 has a recess 25 for engaging the engagement protrusion 11 of the set plate 8 at the rear end, and the opening / closing body on the side. A side sleeve 34 is integrally formed with which the engagement hook F is engaged, and an engagement port 26 for receiving the downward engagement protrusion 20 of the release frame 21 is formed in the transverse direction of the center, and the distal end side thereof is formed. An axial spring receiving recess 27a corresponding to the spring receiving recess 27b of the back cover 29 is formed, and a synchronous coil spring 32 is fitted between the opposing spring receiving recess 27a and the spring receiving recess 27b to slide in the axial direction. It is arranged to be possible.

  As shown in FIGS. 2a, 2b, 10 and 11, the operation member 2 has a fitting portion 2b fitted into the opening 6 of the key casing 1 at the bottom of the operation knob 2a. An operation piece 2c that penetrates through the opening 10 of the set plate 8 and reaches the engagement step portion 23 of the operation plate 24 is formed on the lower surface so as to project, and the operation applied to the engagement step portion 23 of the operation plate 24 The actuating plate 24 is elastically slid in the right direction in the figure by the reversible displacement and pressing force of the piece 2c.

  The operation member 2 in the illustrated embodiment is configured such that the fitting portion 2b formed at the lower portion of the operation knob 2a is rotatably fitted to the opening 6 of the casing 1 and is formed integrally with the lower surface of the fitting portion 2b. The operation piece 2c is extended to the engagement step portion 23 of the operation plate 24, and the operation knob 2a is rotated by a predetermined angle so that the tip of the operation piece 2c contacting the engagement step portion 23 is engaged with the engagement step portion 23. The operation plate 24 is driven by pressing the portion 23 to the right in the drawing.

  However, the operation member 2 is not limited to the above-described configuration. For example, the operation plate 24 may be driven by horizontally displacing the operation piece 2c by lever action or sliding action.

As shown in FIGS. 3, 10, and 11, the key button 3 has a transverse through hole 3 b extending in the radial direction of the central portion of the shaft body 3 a, and a segment 3 c can be slid into the transverse through hole 3 b. It is fitted.
This segment 3c has a substantially Z-shaped configuration in which an upper locking piece 3c-1 and a lower locking piece 3c-2 that are selectively projected and retracted to the left and right outer sides of the transverse through-hole 3b are integrally formed.
As shown in FIG. 10, each key button 3 configured in this way passes through the long shaft passage 17 of the release frame 21, the passage 13 of the center plate 16, and the different-diameter opening 9 of the set plate 8. The head is fitted so as to protrude from the opening 4 of the casing 1.

Further, a locking portion 3g is formed on the shaft body 3a of the key button 3 so as to be locked to the lower surface of the through hole 4 of the casing 1 and restrict the top dead center position. A spring that urges the key button 3 toward the top dead center position of the opening 4 of the casing 1 and pushes the depressed key button 3 into the bottom dead center position at the bottom of the key button 3. Engaging means 3d is provided.
The positional relationship between the locking portion 3g that regulates the top dead center of the key button 3 and the set plate 8 is such that when the locking portion 3g of the key button is locked to the opening 4 of the casing 1, the lower portion of the segment 3c is engaged. The stop piece 3c-2 is set to face the opening 9 of the set plate 8 at the same horizontal level.

  Thus, each segment 3c of the non-selection key button at the top dead center position and the selection key button at the bottom dead center position is engaged with the tapered reduced-diameter edge 9c of the set plate 8 by the engagement of the non-selection key button. The upper locking piece 3c-1 protrudes in the transverse direction above the set plate 8, while the lower locking piece 3c-2 of the selection key button protrudes in the transverse direction below the set plate 8. Accordingly, the protruding lower locking piece 3c-2 of the selection key button that has returned to the top dead center position in that posture is at the same level as the set plate 8, so that the slide of the set plate 8 is the lower locking piece 3c- Can not slide due to interference by 2.

  FIGS. 3 and 6c show an embodiment of the spring engaging means 3d for urging the key button 3. As shown in FIG. 3, one end of the urging coil spring 33 is inserted into the lower part of the key button 3 to engage the spring. Preferably, a tapered spring locking hole 3e is formed, and a spring engagement groove 3f for locking the biasing coil spring 33 is formed on the other side above the spring locking hole 3e, and 6c, left and right brackets 21a and 21b having hook-shaped cross sections for hooking the biasing coil spring 33 are provided around the opening 17 on the back surface of the release frame 21, and the spring locking holes at the bottom of the key button shaft body 3b are provided. A large-diameter energizing coil spring 33 with one end engaged with 3e is bulged to the rear of the key button shaft 3a and engaged with the rib 5a of the release frame 21 and the one bracket 21a. The end is locked to the other bracket 21b.

  With this configuration, when the lower end of the key button 3 is pushed down to the lower part of the bracket of the release frame 21, the biasing ring spring 33 engages with the spring engagement groove 3f of the key button 3 to hold the key button 3 in the pushed position. On the other hand, when the release frame 21 slides to the right in the figure, the engagement with the spring engagement groove 3f is released, and the key button 3 protrudes from the opening 4 of the casing 1 by the reaction force of the urging ring spring 33.

  The spring engaging means for urging the key button is not limited to the above-described embodiment, and other configurations are possible as long as they normally urge the key button upward and hold it in the pushed position when pushed. But you can.

  Any material can be used for each member constituting the key device of the present invention as long as it satisfies a predetermined strength. However, in terms of durability, weather resistance, workability, cost, etc., a plastic material, preferably 6, nylon Is suitable.

Next, the operation of the key device according to the present invention will be described.
State Before Locking When the key button 3 is in a free state, all the key shaft bodies 3a are urged toward the outside of the opening of the casing 1 by the lower spring engaging means.

Locking When locking, as shown in FIG. 11, when the key button selected as the key number is pushed, the selection key button 3 is held in the pushed position by the lower spring engaging means.
In this state, when the protruding tip 8 ′ of the set plate 8 is pressed and the set plate 8 is slid to the left in the figure against the spring, the non-selection button and the selection key are pressed by the tapered edge 9c of the opening 9 of the set plate 8. The protruding side locking pieces of the segments 7 of the buttons are sorted above and below the set plate 8.
Although not shown, when the key device is pressed against the main body in this state and the hook is engaged with the lock plate 28, the release frame is engaged with the engagement port 26 of the lock plate 28 during the sliding process of the lock plate 28. The release frame 21 is slid rightward in the drawing by the back side engaging projection 20 of the drawing 21. As a result, the selection key button is released from holding position, and the selection key button returns to the original upward biasing position.
Therefore, in this state, the lower locking piece 3c-2 on the projecting side of the segment of the selection key button and the set plate 8 face each other on the same horizontal plane, so that the rear end of the enlarged edge 9a of the deformed opening 9 formed in the set plate 8 And the operation of the operation member 2 becomes impossible due to the mutual interference of the protruding lower locking piece 3c-2 of the selection key button, and the locking operation is completed. At the same time, the lock plate 28 returns to the original position by the reaction force of the synchronous coil spring 32.
In other words, the release plate 8 used in the present invention has a function of sorting the non-selection key button and the protruding locking piece 3c-1 of the selection key button above and below the release plate 8, and the selection key button returns to its original position. It sometimes has a function of disabling the unlocking operation of the operation member unless it is interfered by the protruding locking piece 3c-1 of the selection key button and the selection key button is displaced again to the depressed position.

  Further, when the key device is locked, the lower engagement protrusion 11 of the set plate 8 is locked to the recess 25 of the lock plate 28, and the engagement protrusion 20 of the release frame 21 is engaged with the engagement opening 26 of the lock plate 28. The release frame 8 is locked.

Unlocking After locking the key button 3 of the selection key number from the locked state and locking it in the pushing position, the operating piece 2c presses the operating plate 8 and the operating plate 24 to the right in the figure by operating the operating member 2. Then, the release frame 21 slides to the right in the figure linked to this, the bottom dead center position engagement of the pressed key button is released, and it returns to the top dead center position and the engagement hook F is engaged. Is unlocked and unlocking is completed. Therefore, the key device is unlocked by pressing the key number button and one-touch operation of the operation member 2.

  In addition to being widely used in building mailboxes and doors as a new key device that is safe and easy to use, it can also contribute to the security industry.

1 ... casing
1a… Front plate
2 ... Operation parts
2a… Control knob
2b ... Fitting part
2c ... Operating piece
3… Key button
3a ... Shaft
3b ... Transverse through hole
3c… Segment
3c-1… Upper locking piece
3c-2… Lower locking piece
3d ... Spring engagement means
3e… Spring locking hole
3f… Spring engagement groove
3g ... Locking part
4 ...
5a ... rib
5b ... Folded thin part
6… Opening
7a, 7b ... Spring receiving recess
8 ... Set plate
8´… tip
9… Varied opening
9a… Expanded edge
9b ... Shrinking edge
9c… Tapered reduced diameter edge
10 ... Opening
11 ... engagement protrusion
12a, 12b ... Spring receiving recess
13 ...
14 ... Opening
15a ... Projection claw
15b ... Nail holder
16 ... Center plate
17 Long shaft opening
18 ...
19… The hook-shaped engagement part
20 ... Back side engagement protrusion
21 ... Release frame
21a, 21b ... Bracket
22 ... hook-shaped engagement part
23 ... engagement step
24 ... Operating plate
25 ... recess
26 ... engagement port
27 ... Guide frame
27a, 27b ... Spring receiving recess
28… Lock plate
29 ... Back cover
29a ... engagement hook receiving port
30… Position tuning coil spring
31 ... Synchronous coil spring
32 ... Synchronous coil spring
33 ... Biasing coil spring
34 ... Hook engagement part
F ... engaging hook

Claims (2)

The front plate (1a) of the frame body has a plurality of openings (4) for passing the head of the key button (3) and an opening (6) for fitting the operation member (2). An axial spring receiving recess (7a) is provided, and a back cover (29) with an engagement hook receiving port (29a) on the opening and closing main body side and a spring receiving recess (27b) is fitted on the back side of the frame. A casing (1) to be;
The operating part (2a) has an engaging part (2b) fitted in the opening part (6) of the casing (1) at the lower part, and an operating piece (displaceable in the axial direction of the casing (1) on the back surface) An operating member (2) with protruding 2c);
An upper locking piece (3c-1) and a lower locking piece (3c-2) that protrude selectively outward are integrally formed in the transverse through-hole (3b) formed in the center of the shaft body (3a). Spring engaging means (3d) for slidably fitting the segment (3c) and for urging the shaft (3a) to the outside of the passage (4) of the casing (1) and locking it in the pushing position A plurality of key buttons (3) fitted so as to be slidable back and forth from the top dead center position to the push-in position via
The protruding side locking piece is locked via the enlarged diameter edge (9a) through which the protruding side locking piece of the segment (3c) fitted to each key button (3) passes and the tapered reduced diameter edge (9c). It consists of a narrowed edge (9b), and passes the elongated different-diameter opening (9) group corresponding to the passage (4) group of the casing (1) and the operating piece (2c) of the operating member (2) An opening (10) and a plate provided with the other spring receiving recess (7b) corresponding to the spring receiving recess (7a) of the casing (1), and an engagement protrusion (11) on the back surface of the plate A set plate (8) formed with spring receiving recesses (12a) before and after the opening (10), and slidably disposed in the inner axial direction of the casing (1);
An opening (14) is provided through which the key button passage (13) group corresponding to the passage (4) group of the casing (1) and the engagement protrusion (11) on the back surface of the set plate (8) are passed. 1) a center plate (16) supported parallel to the inner central axis direction;
A group of long-axis passages (17) through which the key buttons pass corresponding to the passages (9) of the set plate (8), and a passage (18) through which the engagement projection (11) on the back side of the set plate (8) passes. The hook-shaped engagement part (19) and back-side engagement protrusion (20) are integrally formed at the tip of the diameter-reduced neck part, and can be slid along the axial direction of the center plate (16) A release frame (21) disposed in the;
At the rear end, a hook-like engagement portion (22) that is engaged with a concave and convex shape while holding a predetermined gap is provided at the hook-like engagement portion (19) of the release frame (21), and the casing ( 1) The operating member (2) fitted to the opening (6) (2) The engagement step (23) that is elastically pressed toward the tip by the operating piece (2c) on the back surface and the set plate (8) An actuating plate (24) provided with a spring receiving recess (12b) corresponding to the spring receiving recess (12a) and arranged to be slidable in the axial direction;
A recess (25) for engaging the engaging protrusion (11) of the set plate (8) is provided at the rear end, and a hook engaging portion (34) for engaging the main body side hook of the opening / closing member is provided on the side thereof. And an engagement port (26) for receiving the back side engagement projection (20) of the release frame (21) in the center transverse direction, and further, a spring receiving recess (27b) of the back cover (29) on the tip side thereof A lock plate (28) provided with an axial spring receiving portion (27a) corresponding to the slidably arranged in the axial direction;
An axially shared position tuning coil spring (30) is interposed between the spring receiving recess (7a) of the casing (1) and the spring receiving recess (7b) of the set plate (8). The spring receiving recess (12a) and the spring receiving recess (12b) of the operating plate (24) are provided with an axial shared synchronous coil spring (31), and further, the spring receiving recess (27a) of the lock plate (28) A key device between the opening and closing members, wherein an axial shared synchronous coil spring (32) is interposed between the spring receiving recesses (27b) of the back cover (29). The spring engagement means (3d) of the key button (3) has a spring engagement hole (3e) formed in the lower part of the shaft (3a) of the key button and a spring engagement formed in the side surface of the shaft (3a). It consists of a groove (3f) and a coil spring (33) that is urged around the shaft (3a) of the key button and urged toward the casing opening (4). 2. A key device according to claim 1, wherein a coil spring (33) that is locked is engaged with a bracket of a release frame (21) and elastically stretches around a shaft body (3a).

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