JP2002227493A - Locking device for cover body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compact a device by particularly reducing the front-rear size of the device. SOLUTION: The locking device 1 with a housing 2, a movable knob 3, a key cylinder 4 and an external cylinder 5 and a latch 7 changed over at a locked place engaged with an engaging member 71 on the box body side and an unlocked place where the engagement of the latch is released under the unlocked state of the key cylinder is used as the object. The key cylinder 4 has a projection 9b projected to the front corresponding section of the latch 7, and can be rotated by the movable knob 3 to the housing 2 together with the external cylinder 5. The latch 7 is slidably assembled to the housing 2 in the vertical direction approximately crossing the pushing direction of the movable knob 3 while being urged in the locked direction, can be changed over at the unlocked place in the case of the unlocked state of the key cylinder 4 by the change of a position by the pushing operation of the movable knob 3 of the projection 9b, and cannot be changed over at the unlocked place in the case of the locked state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device having a key cylinder, and in a non-locked state, a latch engaged with a locking member on a box body side by a pressing operation of a movable knob from a locked position. The present invention relates to a lid locking device that switches to a non-locking position.

[0002]

2. Description of the Related Art FIG. 9 shows the appearance of a lock device used for a glow box of an automobile and a cover thereof. In the glow box 51, a part of the instrument panel 50 is formed in the box body, and the opening on the near side is the cover 5.
It is opened and closed by 2. The lower side of the lid 52 is attached to a corresponding portion of the box body via a hinge (not shown), and the upper side is lockable by a lock device 60. FIG.
Is an example of a conventional structure of the lock device 60 (Kokai 61-17154).
No.). The lock device 60 includes a housing 61 attached to the lid 52 and a pair of movable knobs 62.
, A key cylinder (also referred to as a lock rotor) 63, and a latch 65 which is engaged with and disengaged from a locking member 64 on the box body side.

The housing 61 has a key cylinder 63 on a central outer cylinder 61a, a movable knob 62 between a mounting flange 61b and a front wall 61c, and a support 61d behind the outer cylinder 61a.
And the latches 65 are arranged respectively. The key cylinder 63 has a rotatable movable piece 66 incorporated in a front peripheral shoulder, and a latch restraining piece 67 connected via a pin to be spring-biased. The keyhole 61e is inserted and held in the outer cylinder 61a with the keyhole exposed.
The outer cylinder 61a has grooves corresponding to the locked position a, the unlocked position b, and the open position c of the key cylinder 63. The key cylinder 61 is rotated by a key k between a locked position a and an unlocked position b, and the key k can be removed at each position. The movable piece 66 includes a ring 66a and a pressing cam 66b. The movable knob 62 has a ring 66
The movable piece 66 is engaged with the corresponding protrusion 66c provided on the movable member 66a, and when pressed against the spring pressure of the return biasing spring 69, the movable piece 66 is rotated in conjunction therewith. The latch 65 includes a support portion 61d.
Is pivotally supported via a shaft 68 and is urged by an urging spring 70 in a direction of disengaging from the locking member 64.

[0004] When the key cylinder 63 is unlocked (not locked by the key k), the latch 65 is connected to the locking pin (substantially U-shaped striker) 71 on the box body side via the latch restraining piece 67. The lid 52 is closed by engaging and holding the cover. When the movable knob 62 is pressed, the restraint between the latch 65 and the latch restraining piece 67 is released, the engagement is released, and the latch 65 is recoiled by the reaction of the spring pressure of the biasing spring 70. Push 52 in the opening direction. Movable knob 62
When the pressing force is released, the arm returns to the original position with the movable piece 66 irrespective of the latch restraining piece 67. When the key cylinder 63 is locked (turned to the locking position a by the key k), the key cylinder 63 engages a lock piece (also referred to as a lock plate) with a lock groove of the outer cylinder 66a. The engagement state of the latch 65 is maintained without being moved even by the pressing operation of the knob 62.

[0005]

The locking device 6 described above.
0 is attached to the relatively thin lid 52 side, and the latch 6
5 is a type which is engaged with and disengaged from a locking pin 71 protruding into the box body.
The presence of the movable piece 66 and the like has an advantage that the pushing stroke of the movable knob 62 when the latch 65 is switched from the locked position to the unlocked position can be reduced as compared with the device structure such as 119084. By the way, this kind of locking device 60
In the closed state of the lid 52, the movable knob 62 enters the box body except for the movable knob 62, and restricts the available space of the box body in proportion to the size of the locking device 60. I want to make L somewhat smaller. Further, since the lock device 60 is visible in the open state of the lid 52, it is desirable to reduce the size of the external appearance of the lock device and to reduce the exposed portion of the mechanism as much as possible to eliminate the sense of incongruity.

An object of the present invention is to relatively easily solve the above-mentioned problems. More specifically, the object of the present invention is to make more effective use of the box body, thereby improving the quality of the box and the livability of the cabin, etc., and improving the appearance when the lid is opened.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides, as illustrated in the drawings, a housing attached to a lid, a movable knob which is pressed against spring pressure, and a front end face. A lock provided with a key cylinder having a key hole and an outer cylinder, and a latch which can be switched to a locked position engaged with the locking member on the box body side and a non-locked position released from engagement when the key cylinder is unlocked. In the device, the key cylinder has a protrusion protruding from a front corresponding portion of the latch, and is rotatable with the outer cylinder by the movable knob with respect to the housing, and the latch is movable with respect to the housing. It is slidably mounted in the vertical direction substantially intersecting with the push direction of the knob, and is urged in the lock position direction by an urging spring.
By changing the position of the protrusion by pressing the movable knob, the key cylinder can be switched to the unlocked position when the key cylinder is unlocked, and cannot be switched to the unlocked position when the key cylinder is locked. It is characterized by:

[0008] The above structural feature is that the lock device has a key cylinder (lock rotor) and an outer cylinder, and the cover is relatively thin and extends over the surface of the lid. In the unlocked state, the latch is switched from the locked position to the unlocked position due to the relationship between the projection of the key cylinder and the front corresponding portion of the latch, and the latch moves in the unlocked direction in the locked state. This makes sliding impossible. In other words, in the device of the present invention, the relative position of the projection on the key cylinder side with respect to the front surface of the latch due to the pressing operation of the movable knob,
In the unlocked state, the latch is switched from the locked position to the unlocked position, and in the locked state, the latch cannot be switched to the unlocked position. Such a present invention is significant in reducing the overall dimension L in FIG. 9, particularly in that the movement of the latch is in the vertical direction intersecting the lateral movement of the movable knob, and the longitudinal dimension is suppressed as compared with the conventional structure.

The present invention described above is more preferably embodied as follows. First, the key cylinder and the outer cylinder are pivoted in the circumferential direction via the movable knob, and the latch has a cam groove on the plate-shaped front surface that abuts the projection, and the key cylinder is unlocked. Only when the relationship between the projection and the cam groove is such that the slide position can be slid from the locked position to the unlocked position. This specifies the first mode, and the present invention can be easily realized only by adding the protrusion to the latch-side cam groove, that is, adding a cam groove to the latch. Secondly, the projection is provided on a cam member coupled to a rear side of the key cylinder, and projects into the cam groove. This is because, by providing the projection on the cam member, the cam groove is formed on the front surface of the latch and can be easily formed while securing the groove width dimension and the like. Third, the key cylinder and the outer cylinder are vertically rotated through the movable knob, and the latch is a non-locking contact portion that contacts the projection on a plate-shaped front surface and a locking escape portion that escapes the projection. The key cylinder can be slid from the locked position to the unlocked position via the projection and the unlocking contact portion only when the key cylinder is in the unlocked state. This specifies the second mode, and the present invention can easily realize the present invention simply by adding the protrusion to the contact portion and the relief portion on the latch side, that is, by adding them to the latch. It is easy to reduce the number of members compared to the cam groove of one mode. Fourthly, the movable knob has an arm portion having a tapered surface, and when pressed against spring pressure, the movable knob pushes the key cylinder and the outer cylinder downward through the tapered surface to rotate. is there. This is a configuration example in which the key cylinder and the outer cylinder are turned up and down by a movable knob, and the rotation can be realized only by forming an arm portion integrally with the movable knob.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the concept of the present invention will be clarified with reference to a first embodiment of FIGS. 1 to 4 and a second embodiment of FIGS. FIG. 1 and FIG. 5 are schematic configuration diagrams showing the relationship between members of each lock device. FIG.
FIG. 6 and FIG. 6 are schematic diagrams in which each locking device is longitudinally sectioned. FIG.
FIG. 7 and FIG. 7 are schematic views for explaining the operation of each lock device in the unlocked state. 4 and 8 are schematic diagrams for explaining the operation of each lock device in the locked state.
In the description of each embodiment, members that are the same or similar in operation are denoted by the same reference numerals, and redundant description is omitted as much as possible.

(Overall Overview) The lock device 1 of each embodiment
1A, a main member is composed of a housing 2, a movable knob 3, a key cylinder 4, an outer cylinder 5, and a latch 7. The material is arbitrary, but in each embodiment, the key cylinder 4 and the outer cylinder 5 are made of metal, and the housing 2, the movable knob 3, and the latch 7 are resin molded products. The application has been developed to be applied to the lid 52 of the glow box 51 in the vehicle interior as shown in FIG. 9, but may be other than this. In short, it is suitable when the lid 52 is relatively thin and the lock devices 1 and 1A cannot be arranged within the thickness of the lid 52. In addition, each lock device 1, 1
A is disengaged from a striker 71 as a locking member protruding from the box body. This striker 71
Has, for example, a substantially U shape fixed to the upper wall in the box body. The lock devices 1 and 1A may be referred to as a lock device or the like, and the lid 52 may be referred to as a door or the like. The housing 2 can be formed integrally with the lid 52. In the following description, first, the components will be described in detail, including the assembling relationship with each other, mainly in the first embodiment, and then the main operation will be referred to. The second embodiment will be described mainly on the differences from the first embodiment.

(First Embodiment) This locking device 1 includes a housing 2, a pair of movable knobs 3, a key cylinder 4, an outer cylinder 5, a latch 7 together with an outer cylinder holding frame 6 and a cam member 9. Basically, the housing 2 can be slid in the vertical direction substantially intersecting with the pushing direction of the movable knob 3 and is spring-biased in the lock position direction.

As shown in FIG. 1, the housing 2 has a case 11, a latching vertical guide 12, a restricting piece 13, a mounting boss 14, and a horizontal knob for a movable knob. The guide portion 15 and the like are formed integrally. That is, on the front side of the base portion 10, the case portion 11 disposed at the middle between the left and right, the lateral guide portions 15 on both sides, the spring locking portions 17 disposed on both inner sides of the case portion 11, and the upper and lower lateral guide portions 15 are provided.
A retaining claw 16 is provided between them. The case portion 11 is opened to the left and right, and a support hole 11a penetrated to the front surface, and a mounting piece portion 1 protruding from upper and lower surfaces.
1b. On the rear side of the base portion 10, a vertical guide portion 12 is protruded rearward from a portion corresponding to both sides of the case portion 11, and a regulating piece portion 13 is protruded upward between the vertical guide portions 12. At the same time, a mounting boss portion 14 is protruded outside the vertical guide portions 12. Vertical guide 12
Is a generally L-shaped portion, and is a portion into which the latch 7 is slidably mounted in a vertically slidable manner, and has a stopper projection for preventing the latch 7 (not shown) from falling out and restricting the range of vertical movement. Then, the above housing 2 is inserted from the back side of the lid 52 in a state in which the two vertical guide portions 12 are inserted into the rectangular openings 52a with respect to the lid 52, and the mounting bosses 14 on both sides are inserted into the mounting holes 52b. It is fixed by a set screw S or the like. In the attached state, the regulating piece 13 contacts the striker 71 on the box body side as shown in FIG.

Each movable knob 3 has a main body 18 having a size corresponding to the opening of the case 11 and an arm 19 inside the main body 18 and protruding horizontally from above or below. . The main body 18 has a substantially U-shaped section which is slidably supported by the upper and lower horizontal guide portions 15 of the base portion 10 described above.
The outside is closed by the side. As shown in FIG. 3, each main body 18 is provided with a spring locking portion 18 a and a locking projection (not shown) corresponding to the claw portion 16. The arm portion 19 of each main body 18 has a bearing recess 19a on the distal end side,
When arranged in the case part 11, one is located on the lower side and the other is located on the upper side. Then, both movable knobs 3 are biased by a biasing spring 8A with respect to the housing 2.
Assembled with. That is, in this assembly, the biasing spring 8A has one end locked to the locking portion 17 and the other end locked to the locking portion 18b, and the main body 18 inserts the arm portion 19 into the case portion 11, When both edges having a substantially U-shaped cross section are fitted into the corresponding upper and lower lateral guide portions 15 and pushed strongly into the case portion 11, the locking projections get over the claw portions 16. As a result, each movable knob 3 is movably supported via the corresponding lateral guide portion 15, and is prevented from coming off from the lateral guide portion 15 by the contact of the locking projection with the claw portion 16. Further, each movable knob 3 is urged in a direction in which the main body 18 is separated from the case portion 11, and is in the state (normal position) in FIG. Therefore, both movable knobs 3
When the main body 18 is pushed in the direction of the arrow in FIG. 3, the main body 18 moves by a predetermined dimension toward the case portion 11 against the spring pressure of the biasing spring 8A.

The key cylinder 4 and the outer cylinder 5 have a well-known key mechanism. That is, the key cylinder 4 has a key hole 4a on the front end face and a plurality of holes 4b on the outer periphery, and a lock piece (also referred to as a lock plate, which is also referred to as a lock plate in FIG. (Not shown) project in the radial direction, and are inserted and held in the outer cylinder 5 with the key hole 4a exposed. Reference numeral 5a indicates the key cylinder 4
It is a ring that keeps out. The outer cylinder 5 has grooves corresponding to the locking position a and the unlocking position b as described above, or the locking position a, the unlocking position b, and the lid opening position c. When a matching key (also referred to as a sign key) is inserted into the key hole 4a, the lock piece is retracted inside, and the key cylinder 4 locks the outer cylinder 5 with the locking position a through the key.
And the unlocked position b, or in addition to the unlocked position b
And the key can be removed at each position. In this embodiment, the key cylinder 4 has a projection 4c protruding from the rear end. The projection 4c protrudes rearward from a position substantially corresponding to the upper side of the key hole 4a on the rear end surface, and is rotated integrally with the key cylinder 4. The above key cylinder 4
Is inserted and held in the outer cylinder 5 and is integrated with the cylindrical holding frame 6 via the outer cylinder 5. The holding frame 6 is a cylinder shorter than the key cylinder 4, and has a pair of shaft portions 20 protruding from the outer peripheral portion displaced by 180 degrees. When the key cylinder 4 is inserted and held in the holding frame 6 via the outer cylinder 5, the projection 4 c projects from the rear end of the holding frame 6. A cam member 9 is connected to the projection 4c. This cam member 9
Has a coupling hole 9a provided on the front side of the main body plate portion for press-fitting the projection 4c, and a cam projection 9b projecting toward the latch 7 side. That is, the operation of the cam member 9 amplifies the trajectory of the projection 4c accompanying the rotation of the key cylinder 4 via the cam projection 9b.

The above-described holding frame 6 is used in a prototype and can be omitted. In that case, the shaft 2
0 is provided in the outer cylinder 5. Technically, the cam member 9 can also be omitted. In this case, a portion corresponding to the cam plate and the cam projection is integrally formed on the rear end side of the key cylinder 4. Therefore, the projection of claim 1 is not limited to the cam projection 9b of this form,
Also included is an embodiment provided directly on the device. Then, the above key cylinder 4, outer cylinder 5, ring 5a, holding frame 6, cam member 9
(Hereinafter referred to as a cylinder assembly) is disposed in the housing 2 and the front cylinder portion of the holding frame 6 is
a is rotatably fitted and held. In the cylinder assembly, as shown in FIG. 3, the two shaft portions 20 are located substantially vertically between the front and rear of the case portion 11 and vertically positioned, and are swingably fitted to the corresponding recesses 19a of the movable knob 3 (arm portion 19). Are combined. In this assembled state, as shown in FIG.
a protrudes rearward in the housing 2.

The latch 7 is in the form of a vertically arranged plate, and the main body 21 has a mounting piece 22, an upward engaging portion 23, and a cam groove 2.
4 and a spring engaging portion 25 and the like. The mounting piece 22 is provided on the front both sides of the main body 21 with a substantially L-shaped cross section, and is slidably fitted to the vertical guide 12 to assemble the latch 7 with the housing 2. Engagement part 23
Has a tip surface formed in an obliquely tapered shape, and is engaged and disengaged by a striker 71 on the box body side. The cam groove 24 includes a horizontal groove 24 a extending in the width direction of the main body 21 and a horizontal groove 2.
4a, and a vertical groove portion 24b that continues downward from one side. The horizontal groove portion 24a has a heart-shaped hollow portion on the upper side, and is a groove for guiding and operating the cam projection 9a when the key cylinder 4 is unlocked. The vertical groove 24b is a groove for allowing the cam projection 9a to escape when the key cylinder 4 is locked. When the latch 7 is assembled to the housing 2 through fitting of the mounting piece 22 and the vertical guide portion 12, the locking portion 25 is provided with a spring locking portion 10 a provided on a corresponding portion of the housing 2 as shown in FIG. And the urging spring 8B is assembled and held between them. The biasing spring 8B is held in a state where the biasing pressure is generated, and constantly biases the latch 7 upward, that is, toward the lock position where the latch 7 is engaged with the striker 71.

(Operation) Next, the main operation of the lock device 1 will be described. In this lock device 1, the lid 71
Are not locked to the box body (unlocked state in FIG. 3), and are locked (locked state in FIG. 4). The unlocked state means that the key cylinder 4 is not operated by a key, and the lid 71 is switched from the closed state to the open state by the pushing operation of the movable knob 3. The locked state means that the key cylinder 4 engages the lock piece with the lock groove of the outer cylinder 5 from the non-lock groove of the outer cylinder 5 by a key operation, and the lid 71 is also closed by the pushing operation of the movable knob 3. Is maintained. These basics are the same as before.

In the unlocked state, each member is in the normal position shown in FIGS. That is, both movable knobs 3 are urged in a direction in which the main body 18 is separated from the case portion 11 by the urging spring 18A. The cam projection 9a is in contact with the inner surface of the horizontal groove 24a of the cam groove 24 at an appropriate position. Accordingly, the latch 7 is urged upward by the urging spring 8B, and the engaging portion 23 engages with the striker 71 as shown by the solid line in FIG. 3 (lock) with the cam projection 9a located in the horizontal groove portion 24a. position)
are doing. When the cover 52 is opened, both movable knobs 3 are pressed in the direction of the arrow in FIG. Then, the two movable knobs 3 are slightly moved laterally toward the case 11 against the spring pressure of the biasing spring 8A. At the same time, the entire cylinder assembly is rotated counterclockwise through the fitting of the recess 19 a and the shaft 20 in accordance with the amount of lateral movement of the arm 19. The cam projection 9a rotates the cam groove 2 by its rotation.
The latch 7 is pressed downward while moving in the horizontal groove portion 24a of FIG. The latch 7 is moved downward against the urging of the urging spring 8B by the pressing of the cam projection 9a, and
3 is released from the striker 71 as shown by the imaginary line in FIG. (FIG. 3 shows the positions of the key hole 4a and the cam projection 9b before and after the movable knob 3 is pressed.) The movable knob 3
Is released, the movable knob 3 is turned on by the biasing spring 8.
A, the latch 7 is automatically returned to the original normal position by the biasing spring 8B. Further, when the lid 52 is closed from this state, the latch 7 receives the stress from the striker 71, slides downward against the spring pressure of the biasing spring 8B, and temporarily moves toward the unlock position. When it moves and passes through the striker 71, it is again engaged with the lock position, that is, the striker 71.

In the locked state, the key hole 4a and the cam projection 9b of the key cylinder 4 are displaced from those in FIG. 3 as shown in FIG. That is, in this embodiment, the key hole 4a is displaced from the normal position in FIG. 3 by a predetermined angle, and the cam projection 9b is located in the vertical groove 24b of the cam groove 24. In this locked state,
The movable knob 3 can be pressed against the spring pressure of the biasing spring 18A. However, in this structure, the cam protrusion 9b is located in the vertical groove portion 24b which is one step lower, and even if the movable knob 3 is pressed and the key cylinder assembly is rotated, the cam protrusion 9b remains in the horizontal groove portion 24a. (FIG. 4 shows the positions of the key hole 4a and the cam projection 9b before and after the movable knob 3 is pressed). For this reason, the latch 7 is maintained in the locked position,
The locked state is maintained unless the key cylinder 4 is returned to the original position by a key operation. It should be noted that the idle driving of the movable knob 3 eliminates unnecessary load between members as in the related art.

Therefore, in the lock device 1, it is assumed that each operation in locking and unlocking is performed in the same manner as in the prior art, so that the latch 7 can be slid up and down, and the movable knob 3 and the cylinder Due to the relationship between the assembly, the cylinder assembly, the latch 7, the cam projection 9b, and the cam groove 24, the front-rear dimension of the device can be greatly reduced as compared with the conventional product, thereby realizing compactness. Further, this structure has an advantage that the assemblability of each member with respect to the housing 2 is good, and the positional accuracy of the latch 7 and the key cylinder 4 is easily satisfied.

(Second Embodiment) This lock device 1A includes a housing 2, a pair of movable knobs 3, a key cylinder 4, an outer cylinder 5, and a latch 7. 9 in that the relationship between the protrusion 4c on the cylinder assembly side and the front-side corresponding portion of the latch 7 is simplified.

Here, the housing 2 has a structure in which a case portion 11A is assembled to a base 10A as shown in FIG.
If the restrictions on molding are eliminated, they may be formed integrally. The base portion 10A has a large opening 10b in the center, and has case mounting portions 10c and 10d at upper and lower edges, and also has a vertical guide portion 12 for a latch, a regulating piece portion 13, and a horizontal guide portion for a movable knob. 15 and the like are integrally formed. The lateral guide portion 15 is provided on the front side of the base portion 11A and is provided in a substantially U-shape on both sides of the opening 10b. The lateral guide portion 15 guides the movement of the case portion 11A along the outer groove 15a of the upper and lower pieces, and has an inner side. Used as a spring lock. At the rear side of the base portion 10A, a vertical guide portion 12 is protruded rearward from both sides of the base portion 10A, and an arm insertion opening 10e is opened in a wall portion between the vertical guide portion 12 and the base portion 10A. I have. The vertical guide portion 12 has a substantially L-shape and is a portion into which the latch 7 is slidably mounted vertically. The vertical guide portion 12 has a stopper projection that stops the latch 7 (not shown) and regulates the range of vertical movement. I have. Then, in the state of being attached to the lid 52, the regulating piece 13 contacts the striker 71 on the box body side as shown in FIG. 6 to determine the closed position on the upper side of the lid 52. On the other hand, the case portion 11A has a support hole 11a which is a loose fitting hole which has a substantially U-shaped cross section and is penetrated to the front surface.
A pair of holding frame support portions 11d provided on the inside, a shaft hole 11e coaxially penetrated by both support portions 11d, and a mounting portion 10
It has an engaging portion 11f engaged with the hole d. The case 11A is attached to the base 10A by engaging the hole of the attachment 10d with the engagement 11d.

Each movable knob 3 has a main body 18A sized to be inserted into the case 11A, and an arm 19A connected to the main body 18A in a substantially L-shape and extending substantially parallel to the main body 18A. . The main body 18A has an insertion edge 18c with both ends of the U-shape bent, and the insertion edge 18c is fitted into the outer groove 15a of the lateral guide portion 15 so that the front portion of the base 10A is formed. Along a predetermined amount. One of the arm portions 19A of each movable knob 3 is separated from the main body 18A by an amount corresponding to the thickness of the movable knob 3, and when inserted through the openings 10e on both sides described above, it is located in the housing 2 as shown in FIG. Are set to line up. The shape of each arm portion 19A is formed as a tapered surface 19b which is tapered on the lower side and inclined upward from the bottom toward the tip. The two movable knobs 3 are assembled to the housing 2 together with the biasing spring 8A. That is, in this assembly, the biasing spring 8A has one end side in the lateral guide portion 15 which also serves as a locking portion, and the other end side in the main body 18.
A is locked by the locking portions 18a in the
A is partially inserted into the case portion 11A while fitting the insertion edge portion 18c into the outer groove 15a as described above. Thereby, each movable knob 3 is connected to the outer groove 15 a of the corresponding lateral guide portion 15.
And is movably supported through the outer groove 15a. Further, the main body 18A is urged in a direction away from the case portion 11A, and the state (normal position) shown in FIG. Therefore, when the main body 18A is pushed in the direction of the arrow in FIG. 7, the two movable knobs 3 move against the case portion 11 against the spring pressure of the biasing spring 8A.
Moves to the side by a certain dimension.

The key cylinder 4, outer cylinder 5, holding frame 6, and ring 5a are substantially the same as in the first embodiment. Further, the lock piece (lock plate) that appears and disappears in the hole 4b is also omitted from the key cylinder 4 in FIG. Projection 4c of key cylinder 4
Project from the front side of the latch 7. In this embodiment, the key cylinder 4, the outer cylinder 5, the holding frame 6, the ring 5
The assembly (a) (hereinafter, referred to as a cylinder assembly) is pivotally supported by both support portions 11d of the case portion 11A in a state where the front side is disposed in the support hole 11a. In other words, this cylinder assembly has its front side inserted into the support hole 11a, and each shaft portion 20 is pivotally supported by the corresponding shaft hole 11e, so that the rear portion is located at the back of the opening 10b. It is rotatable up and down around 20 as a fulcrum.

The latch 7 has a step 27 in place of the cam groove 24.
7 is greatly different from the first embodiment. The step portion 27 has a recessed portion on the front side of the engagement portion 23, and the non-locking contact portion 2 that contacts the projection 4 c on the lower inner side of the recessed portion.
7a and a lock escape portion 27b that escapes the projection 4c. The contact portion 27a corresponds to an L-shaped horizontal piece,
This is where the projection 4c is operated when the key cylinder 4 is not locked. The escape portion 27b corresponds to a space downward from the tip of the L-shaped horizontal piece, and the key cylinder 4
This is where the projection 4c is released downward from the contact part 27a in the locked state of FIG. The locking portion 25 is protruded from the lower surface of the contact portion 27a, and the latch 7 is assembled to the housing 2 through the fitting between the mounting piece 22 and the guide portion 12 in FIG.
Spring engaging portion 1 provided at a corresponding portion of housing 2 as shown in FIG.
0a, the biasing spring 8B is assembled and held. The biasing spring 8B is held in a state where the biasing pressure is generated, and constantly biases the latch 7 upward, that is, toward the lock position where the latch 7 is engaged with the striker 71.

(Operation) Next, features of the operation of the lock device 1A will be described. In the unlocked state, each member is at the normal position in FIGS. 6 and 7, and the protrusion 4 c is in contact with the inner surface of the contact portion 27 a of the step portion 27 at an appropriate position. Therefore,
The latch 7 is urged upward by the urging spring 8B, and the engagement portion 23 engages with the striker 71 as shown by a solid line in FIG. 6 (lock position) with the projection 4c abutting on the contact portion 27a. are doing. Then, when opening the lid 52, both movable knobs 3 are pressed in the direction of the arrow in FIG. Then
The two movable knobs 3 are slightly laterally moved toward the case 11A by the body 18A against the spring pressure of the biasing spring 8A. At the same time, the above-described cylinder assembly is pushed downward by the tapered surface 19b of the arm portion 19A, and as a result, the entire cylinder assembly is rotated downward about the shaft portion 20 as a fulcrum. The projection 4c presses the contact portion 27a downward by its rotation. The latch 7 is moved downward by the pressing of the projection 4c, and
As shown by an imaginary line in FIG. 6, the unlocking position 3 is released from the striker 71, that is, the engagement is released. When the pressing force of the movable knob 3 is released, the movable knob 3 is released from the urging spring 8.
A, the latch 7 automatically returns to the original normal position by the biasing spring 8B. When the lid 52 is closed, the latch 7 is moved downward in the unlocked position by the engagement portion 23 receiving the stress from the striker 71 and sliding downward against the spring pressure of the biasing spring 8B, thereby moving the striker toward the unlocked position. The lock position, that is, the striker 71
Is engaged. This is the same as the first embodiment.

In the locked state, the key hole 4a and the projection 4c of the key cylinder 4 are displaced from those in FIG. 7 as shown in FIG. That is, in this embodiment, the key hole 4a is displaced by approximately 90 degrees from the normal position in FIG.
It is located in. Even in this locked state, the movable knob 3
Can be pressed against the spring pressure of the biasing spring 18A.
However, even in this structure, the projection 4c is located in the relief portion 27b, which is one step lower, and even if the movable knob 3 is pressed and the key cylinder assembly is rotated downward, the projection 4c will Move down. Therefore, the latch 7
Is maintained in the locked position, and the locked state is maintained unless the key cylinder 4 is returned to the original position by a key operation. Accordingly, it is premised that the locking device 1A also performs the locking and unlocking operations in the same manner as in the related art, and the relationship between the movable knob 3 and the cylinder assembly, the cylinder assembly and the latch 7, and the relationship between the projection 4c and the step portion 27. As a result, the front-rear dimensions of the device can be reduced as compared with conventional products, and compactness is realized. This structure also has an advantage that the number of members is smaller than in the first embodiment.

The above embodiments do not limit the present invention at all. The present invention can be modified except for the technical elements specified by claim 1. In particular,
For example, the shapes of the housing 2, the movable knob 3, and the latch 7,
The sliding support structure of the movable knob 3 and the mounting structure of the movable knob 3 to the lid 52 are appropriately changed.

[0030]

As described above, according to the lock device of the present invention, the locking and unlocking operation of the key cylinder in the unlocked and locked state can be obtained as before, while the vertical arrangement of the latch and the relationship with the key cylinder and the like. Thereby, the front-rear dimension can be suppressed as compared with the conventional device. As a result, the present invention can store more items in the box main body, improve the appearance when the lid is open, and improve the reliability of the device and the usability of the box.

[Brief description of the drawings]

FIG. 1 is an exploded schematic view of a lock device according to a first embodiment.

FIG. 2 is a schematic sectional view of the lock device of FIG. 1 in an unlocked state.

FIG. 3 is a schematic view showing an operation of the lock device of FIG. 1 in an unlocked state.

FIG. 4 is a schematic view showing an operation of the lock device of FIG. 1 in a locked state.

FIG. 5 is an exploded schematic view of a lock device according to a second embodiment.

6 is a schematic sectional view of the lock device of FIG. 5 in an unlocked state.

FIG. 7 is a schematic diagram showing an operation of the lock device of FIG. 5 in an unlocked state.

FIG. 8 is a schematic view showing an operation of the lock device of FIG. 5 in a locked state.

FIG. 9 is an explanatory view showing the appearance of a glow box and a conventional lock device.

FIG. 10 is a schematic diagram showing a conventional example of the lock device of FIG. 9;

[Explanation of symbols]

1, 1A ... locking device 2 ... housing (10 and 10A are base parts, 11 and 11
A is a case part 3. Movable knobs (18 and 18A are main parts, 19 and 19A are arm parts) 4. Key cylinder (4a is a key hole, 4c is a projection) 5. Outer cylinder 6. Holding frame 7. Latch (21) 8A: biasing spring for movable knob 8B: biasing spring for latch 9: cam member 52: lid 71: striker (locking member)

Claims (5)

[Claims] 1. A housing attached to a lid, a movable knob pressed against spring pressure, a key cylinder and an outer cylinder having a key hole on a front end face, and engagement with a locking member on a box body side. A latch that is switched to a locked position and a unlocked position that is disengaged in an unlocked state of the key cylinder, wherein the key cylinder has a projection protruding from a front corresponding portion of the latch, The latch is rotatable with respect to the housing with the outer cylinder by the movable knob, and the latch is slidably mounted on the housing in a vertical direction substantially intersecting with a pushing direction of the movable knob, and a biasing spring is provided. The projection is urged toward the lock position, and the projection changes its position by a pressing operation of the movable knob. Unlocked position to the switchable, and the locking device of the lid, characterized in that the switching disabling the unlocked position when the locked state of the key cylinder when the lock state. 2. The key cylinder and the outer cylinder are pivoted in the circumferential direction through the movable knob, the latch has a cam groove on the plate-shaped front surface that contacts the projection, and the key cylinder is in an unlocked state. The locking device for a lid according to claim 1, wherein the locking device is slidable from a locked position to a non-locked position due to the relationship between the protrusion and the cam groove. 3. The lid locking device according to claim 2, wherein the projection is provided on a cam member coupled to a rear side of the key cylinder and projects into the cam groove. 4. The key cylinder and the outer cylinder are turned up and down via the movable knob, and the latch is a non-locking contact portion that contacts the projection on a plate-shaped front surface and a locking escape that escapes the projection. A locking portion that is slidable from the locked position to the unlocked position via the projection and the unlocking contact portion only when the key cylinder is in the unlocked state.
A locking device for a lid according to claim 1. 5. The movable knob has an arm portion having a tapered surface, and when pressed against spring pressure, the movable knob pushes the key cylinder and the outer cylinder downward through the tapered surface to rotate. Item 5. The lid locking device according to Item 4.