JP2014134042A - Latch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch device capable of improving assembly workability.SOLUTION: In a state that an outer case 20 of a latch device 10 is fixed to a cabinet main body 12, a striker 16 is inserted into a latch main body 22, and an inner case 24 is pushed into the outer case 20 via the latch main body 22 in the inserting direction of the striker 16. When the inner case 24 is pushed into the outer case 20, an engagement piece 42 of the outer case 20 is elastically deformed with a rear end 42A as a base point, and protrusions 46 and 48 of the engagement piece 42 are moved from an engagement safety lug 40 at the rear side of the inner case 24 to the engagement safety lug 40 at the front side of the inner case 24, and the inner case 24 is positioned with respect to the outer case 20.

Description

  The present invention is used, for example, when holding a lid or the like so as to be openable and closable with respect to a cabinet or the like, and locks the striker by the first push operation and releases the striker by the next push operation. The present invention relates to a latch device including a locking mechanism (this may be referred to as a push lock / push open mechanism, hereinafter the same).

  Conventional latch devices include, for example, Patent Documents 1 and 2. In Patent Document 1, the latch device includes a movable body that can slide relative to the case body, and the front and rear positions of the movable body can be finely adjusted by a screw member attached to the tip of the movable body. ing. Further, in Patent Document 2, it can be visually confirmed that the latch body and the latch receiver are attached in an appropriate position and direction by the engagement between the fitting hole of the latch body and the fitting protrusion of the latch receiver. It is like that.

Japanese Patent No. 4843463 Japanese Patent No. 3312860

  However, in Patent Document 1, in order to operate the latch device normally, it is necessary to perform fine adjustment by rotating the screw member during assembly. In Patent Document 2, it is necessary to visually confirm the engagement between the fitting hole and the fitting convex portion. For this reason, in Patent Documents 1 and 2, positioning for normally operating the latch device at the time of the assembly work becomes complicated, and the assembly workability is not good.

  In view of the above facts, an object of the present invention is to obtain a latch device that can improve the assembly workability.

  The latch device according to the first aspect of the present invention includes an outer case fixed to a housing, a latch main body that removably holds a striker to be inserted, and the latch main body. The inner case is provided in an inner case that is movable in the insertion direction of the striker, and the inner case and the outer case, and the inner case is pushed into the outer case through the latch body, thereby Positioning means for positioning with respect to the outer case.

  In the first aspect of the present invention, the inner case is pushed into the outer case through the latch body by inserting the striker into the latch body with the outer case fixed to the housing. . When the inner case is pushed into the outer case, it can be positioned by the positioning means at a position where the inner case is pushed into the outer case. This eliminates the need for fine adjustment or visual confirmation in positioning for normal operation of the latch device during assembly work. As a result, the assembly workability is improved.

  According to a second aspect of the present invention, in the latch device according to the first aspect, the positioning means is configured such that the inner case is moved to the outer case via the latch body after the striker is completely pushed into the latch body. The inner case is positioned with respect to the outer case.

  In the present invention according to claim 2, after the striker is completely pushed into the latch body, the inner case is pushed into the outer case through the latch body, so that the inner case is moved relative to the outer case by the positioning means. Positioned. For this reason, after the position adjustment of the striker and the latch main body is completed, the inner case is further pushed into the outer case and positioned. As a result, the position adjustment between the striker and the latch body can be performed simultaneously.

  According to a third aspect of the present invention, in the latch device according to the first or second aspect, the positioning means includes a plurality of engagement members formed along the insertion direction on one of the inner case and the outer case. And an engaged portion that is formed on the other of the inner case and the outer case and engages with the engaging portion.

  According to the third aspect of the present invention, a plurality of engaging portions formed in one of the inner case and the outer case in the insertion direction by the inner case being pushed into the outer case, and the other of the inner case and the outer case The inner case is positioned with respect to the outer case by engaging the engaged portion formed on the outer case. As a result, positioning can be performed with a simple configuration.

  According to a fourth aspect of the present invention, in the latch device according to any one of the first to third aspects, the inner case is attached to the outer case at a position where the movable body provided with the striker is in contact with the housing. Positioned against.

  According to the fourth aspect of the present invention, the striker and the latch main body can be positioned at a position where the movable body provided with the striker contacts the housing.

  According to a fifth aspect of the present invention, in the latch device according to any one of the first to fourth aspects, a holding means for holding the inner case at the positioning position is provided.

  In this invention of Claim 5, an inner case can be hold | maintained in a positioning position by a holding means. For this reason, it is possible to prevent the inner case from moving from the positioned position.

  Since the latch device according to the first aspect of the present invention has the above-described configuration, the assembling workability can be improved.

  Since the latch device according to the second aspect of the present invention has the above-described configuration, the position adjustment between the striker and the latch main body can be performed simultaneously.

  Since the latch device according to the third aspect of the present invention has the above-described configuration, it can be positioned with a simple configuration.

  Since the latch device of the present invention according to claim 4 has the above-described configuration, the striker and the latch main body can be positioned at the position where the movable body provided with the striker is in contact with the housing.

  Since the latch device according to the fifth aspect of the present invention has the above-described configuration, the inner case can be prevented from moving from the positioned position.

It is a sectional side view which shows the state in the middle of the positioning of the latch apparatus which concerns on one Embodiment of this invention. It is a sectional side view showing the positioned state of the latch device concerning one embodiment of the present invention. It is a perspective view which shows the state before positioning of the latch apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the attachment state of the latch apparatus which concerns on one Embodiment of this invention. It is a disassembled perspective view which shows the latch apparatus which concerns on one Embodiment of this invention. It is the perspective view seen from the slanting lower part which shows the inner case of the latch apparatus which concerns on one Embodiment of this invention. It is the top view seen from the upper side which shows the outer case of the latch apparatus which concerns on one Embodiment of this invention. It is the expansion perspective view which made the section which shows the holding part of the latch device concerning one embodiment of the present invention a section. FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 2. FIG. 3 is a cross-sectional view taken along the line 10-10 in FIG.

(Embodiment)
Next, an embodiment of the latch device of the present invention will be described with reference to FIGS.
In the drawings, members (components) having the same or corresponding functions are denoted by the same reference numerals and description thereof is omitted as appropriate. Further, in the drawing, an arrow FR indicates a latch device and a front direction (drawing direction) of a housing to which the latch device is attached, an arrow UP indicates an upward direction, and an arrow IN indicates a width inside direction.

  As shown in FIG. 3, the latch device 10 according to the present embodiment is attached to a bottom portion 12 </ b> A of a cabinet body 12 as a housing. The cabinet body 12 has an opening 12B formed on the front surface, and the opening 12B is opened and closed by a door 14 as a movable body. Further, the door 14 is attached to the side wall portion 12C of the cabinet body 12 via a slide member and a rail member (not shown), and the opening portion 12B is closed (in the direction of arrow A in FIG. 1) and the opening portion 12B. Can be moved in the direction of opening (in the direction of arrow B in FIG. 1). Note that the slide member and the rail member have a well-known configuration, and a description thereof will be omitted.

  A striker 16 is attached to the lower part of the back surface 14A of the door 14, and the tip 16A of the striker 16 is detachably held by the latch device 10.

  As shown in FIG. 5, the latch device 10 includes a latch body 22, an inner case 24, an outer case 20, and a lock cover 26. Since the latch body 22 has a known configuration (see Japanese Patent Application Laid-Open No. 2004-137725), a detailed description thereof will be omitted, and a brief description will be given next.

  The latch body 22 includes a latch member 30, a spring 34, and a tracing lever 36. The latch member 30 includes a slider 31 inserted into the opening 24A of the inner case 24 that has a rectangular box shape, and a lock bar ( Latch latch claw) 32. Convex portions 37 are formed along the front-rear direction on the outer peripheral portion 31 </ b> A of the slider 31, and these convex portions 37 are inserted into the concave portions 39 formed along the front-rear direction on the inner peripheral portion of the inner case 24. ing. Note that a configuration in which the concave portion 39 is formed in the slider 31 and the convex portion 37 is formed in the inner case 24 may be adopted. For this reason, the slider 31 moves in the direction of arrow A in FIG. 5, which is the insertion direction in which the inner case 24 is inserted into the inner case 24, and in the direction of arrow B in FIG. It is possible. An opening 31B is formed on the front surface of the slider 31, and the tip 16A of the striker 16 is inserted into the opening 31B. On the other hand, the lock bar 32 is pivotally supported by the slider 31 and locks the tip end portion 16A of the striker 16 shown in FIG. 2 so that the striker 16 can be prevented from coming off.

  Both side surfaces 31A of the slider 31 are provided with substantially heart-shaped cam grooves 38 having the same shape or different shapes, and the bottom surface of the groove as a substantially flat surface. The cam grooves 38 provide a release position and a locking position. The sliding can be switched.

  The spring 34 biases the latch member 30 toward the release position. The tracing lever 36 is substantially U-shaped, the U-shaped intermediate portion 36A is supported on the rear end side of the inner case 24, and the tips 36C of the U-shaped side portions 36B protrude into the corresponding cam grooves 38. In the state, the whole is held so as to be swingable with the intermediate portion 36A as a fulcrum.

  The latch body 22 locks the striker 16 at the locking position via the cam groove 38 and the tracing lever 36 by the pushing force against the urging force of the spring 34, and the striker 16 is pushed by the next pushing force. 16 is released (push-push locking mechanism).

  A rectangular opening 20 </ b> A is formed on the front surface of the outer case 20, and the inner case 24 is inserted into the outer case 20 from the opening 20 </ b> A. Further, the inner case 24 is movable in the direction of arrow A in FIG. 1 that is an insertion direction to be inserted into the outer case 20 and in the direction of arrow B in FIG. .

  As shown in FIG. 6, an engaging claw 40 as a plurality of engaging portions, which are positioning means, is formed on the rear surface of the lower surface of the inner case 24 along the width direction of the inner case 24 at predetermined intervals in the front-rear direction. Has been. Moreover, the side view shape of each engagement nail | claw 40 is trapezoid. In addition, the side view shape of each engagement claw 40 is not limited to a trapezoidal shape, and may be a shape in which the front side surface 40B is vertical as long as the rear side (insertion direction side) surface 40A is an inclined surface. .

  As shown in FIG. 7, an engagement piece 42 as an engaged portion that is a positioning means is formed on the bottom portion 20 </ b> B of the outer case 20. Slits 44 are formed continuously on both sides in the width direction and on the front side of the engagement piece 42, and the engagement piece 42 is above (in the direction of arrow E in FIG. 1) and below (see FIG. 1) with the rear end portion 42A as a base point. 1 (in the direction of arrow F). Further, as shown in FIG. 1, convex portions 46 and 48 are formed on the front end portion of the engagement piece 42 upward. These convex portions 46 and 48 have a trapezoidal shape when viewed from the side, and engage with the engaging claws 40. In addition, the side view shape of the convex parts 46 and 48 is not limited to a trapezoidal shape, and may be another shape as long as it can be engaged with each engagement claw 40. Further, either one of the convex portions 46 and 48 may be used, or there may be three or more convex portions.

  Therefore, as shown in FIG. 1, in the state before positioning, the convex portions 46 and 48 of the engagement piece 42 are engaged with the engagement claw 40 on the most rear end side of the plurality of engagement claws 40. Yes.

  As shown in FIG. 2, when the door 14 moves in the direction of closing the opening 12 </ b> B of the cabinet body 12 (the direction of arrow A in FIG. 1) and the striker 16 is completely pushed into the slider 31 of the latch body 22, the slider 31. The inner case 24 is pushed into the outer case 20 via Thereby, the engagement piece 42 of the outer case 20 is elastically deformed downward (in the direction of arrow F in FIG. 1) with the rear end portion 42A as a base point, and then restored upward (in the direction of arrow E in FIG. 1). The convex portions 46 and 48 are moved to the front engaging claws 40 of the plurality of engaging claws 40.

  As shown in FIG. 5, an opening 44 is formed at the upper rear portion of the outer case 20, and the lock cover 26 is attached to the opening 44 from above. The lock cover 26 is movable downward (in the direction of arrow C in FIG. 5) and upward (in the direction of arrow D in FIG. 5) with respect to the outer case 20.

  As shown in FIG. 10, the lock cover 26 includes an upper wall portion 26A and a pair of vertical wall portions 26B extending downward from both ends in the width direction of the upper wall portion 26A. A slit 52 and a slit 54 are formed along the front-rear direction at a predetermined interval in the vertical direction on the outer upper part of the pair of vertical wall portions 26B. On the other hand, convex portions 56 are formed on the inner upper portions of both side wall portions 20 </ b> C of the outer case 20, and these convex portions 56 are selectively engaged with the slits 52 and 54. . The engaged portion with which the convex portion 56 engages is not limited to the slit 52 and the slit 54, and may have other configurations such as a concave portion.

  Therefore, as shown by a solid line in FIG. 10, when the convex portion 56 and the lower slit 54 are engaged, the lock cover 26 is held at the standby position moved upward (in the direction of arrow D in FIG. 10). . Further, as shown by a two-dot chain line in FIG. 10, when the convex portion 56 and the upper slit 52 are engaged, the lock cover 26 is held at the holding position moved downward (in the direction of arrow C in FIG. 10). Is done.

  As shown in FIG. 5, a concavo-convex portion 60 that constitutes one of the holding means is formed in the lower portion inside the pair of vertical wall portions 26 </ b> B in the lock cover 26. The concave and convex portions 60 are alternately arranged with concave portions and convex portions along the front-rear direction, and the concave portions and the convex portions extend in the vertical direction. Moreover, as shown in FIG. 9, the shape seen from the up-down direction of each recessed part and each convex part in the uneven | corrugated | grooved part 60 is trapezoid.

  As shown in FIG. 5, a concavo-convex portion 64 constituting the other of the holding means is formed in the lower rear portion of the side wall portions 24 </ b> B of the inner case 24. These concave and convex portions 64 are alternately arranged with concave portions and convex portions along the front-rear direction, and the respective concave portions and convex portions extend in the vertical direction. Moreover, as shown in FIG. 9, the shape seen from the up-down direction of each recessed part and convex part in the uneven | corrugated | grooved part 64 is trapezoid.

  Therefore, as shown by a solid line in FIG. 10, when the lock cover 26 is in the upper standby position, the uneven portion 60 of the lock cover 26 and the uneven portion 64 of the inner case 24 are not engaged. . On the other hand, when the lock cover 26 is in the lower holding position as shown in FIG. 4, the uneven portion 60 of the lock cover 26 and the uneven portion 64 of the inner case 24 are engaged as shown in FIG. The inner case 24 can be prevented from moving in the front-rear direction with respect to the lock cover 26.

  As shown in FIG. 5, attachment portions 72 each having an attachment hole 70 are formed on the outer lower portion of both side wall portions 20 </ b> C of the outer case 20. As shown in FIGS. 3 and 4, the mounting portion 72 of the outer case 20 is fixed to the bottom portion 12 </ b> A of the cabinet body 12 by a fastening member 74 such as a screw.

(Assembling procedure and effects)
Next, the assembly procedure and operation effect of the latch device of the present invention will be described.
As shown in FIG. 3, the latch device 10 assembled with the outer case 20, the latch body 22, the inner case 24, and the lock cover 26 is attached to the bottom 12 </ b> A of the cabinet body 12. At this time, the projections 46 and 48 of the engagement pieces 42 of the outer case 20 are engaged with the engagement claws 40 on the most rear end side of the plurality of engagement claws 40 of the inner case 24. Further, the attaching portion 70 of the outer case 20 is fixed to a position slightly ahead of the proper position in the bottom portion 12A of the cabinet body 12 by a fastening member 74 such as a screw.

  Next, the door 14 is moved in the direction in which the opening 12B of the cabinet body 12 is closed (the direction of arrow A in FIG. 5). As a result, the tip 16A of the striker 16 provided on the door 14 is inserted into the opening 31B of the slider 31 of the latch body 22 built in the inner case 24.

  When the door 14 is further moved in the direction in which the opening 12B of the cabinet body 12 is closed, the striker 16 is completely pushed into the slider 31 of the latch body 22, and the tip 16A of the striker 16 is moved to the slider 31 as shown in FIG. It contacts the bottom of the opening 31B.

  When the door 14 is further moved in the direction of closing the opening 12B of the cabinet body 12, the latch body 22 is pushed into the inner case 24, and the latch body 22 contacts the bottom of the opening 24A of the inner case 24. For this reason, when the door 14 is further moved in the direction of closing the opening 12 </ b> B of the cabinet body 12, the inner case 24 is pushed into the outer case 20 via the latch body 22 by the door 14. At this time, the engagement pieces 42 of the outer case 20 are elastically deformed downward and upward with the rear end portion 42 </ b> A as a base point, so that the convex portions 46 and 48 are engaged with the rear side engagement claws of the plurality of engagement claws 40. 40 moves to the engagement claw 40 on the front side.

  When the door 14 is further moved in the direction of closing the opening 12B of the cabinet body 12, the door 14 contacts the opening 12B of the cabinet body 12 as shown in FIG. For this reason, the relative movement between the plurality of engaging claws 40 and the convex portions 46 and 48 is stopped, and the inner case 24 is positioned with respect to the outer case 20.

  Therefore, in the present embodiment, fine adjustment and visual confirmation are not necessary in positioning for normally operating the latch device 10 during assembly work. As a result, the assembly workability is improved. Further, positioning can be performed with a simple configuration of the engaging piece 42 of the outer case 20 and the engaging claw 40 of the inner case 24.

  When the hand is released from the door 14 after the positioning is completed, the latch main body 22 is activated to bring the striker 16 into the locked state. When the door 14 is pushed again in the closing direction, the striker 16 is unlocked, the door 14 is opened, and the latch device 10 operates normally.

  Next, as shown by a solid line in FIG. 10, the lock cover 26 at the upper standby position is pressed and moved downward (in the direction of arrow D). When the lock cover 26 moves downward, the concavo-convex portion 60 of the lock cover 26 and the concavo-convex portion 64 of the inner case 24 are engaged, and the inner case 24 is held at the positioning position. For this reason, it is possible to prevent the inner case 24 from moving relative to the outer case 20 due to an impact or the like after positioning.

  Further, in the latch device 10 of the present embodiment, after the tip portion 16A of the striker 16 is completely pushed into the slider 31 of the latch body 22, the inner case 24 is moved to the outer case by the door 14 via the slider 31 of the latch body 22. The inner case 24 is positioned with respect to the outer case 20 by being pushed into 20. For this reason, after the position adjustment of the striker 16 and the latch main body 22 has been completed, the inner case 24 is further pushed into the outer case 20 and positioned. As a result, the positions of the striker 16 and the latch body 22 can be adjusted simultaneously, and the striker 16 and the latch body 22 can be normally operated.

  Further, in the latch device 10 of the present embodiment, the inner case 24 is pushed into the outer case 20, whereby the engagement piece 42 of the outer case 20 is elastically deformed downward and upward with the rear end portion 42 </ b> A as a base point. The inner case 24 is positioned with respect to the outer case 20. As a result, it is possible to prevent the inner case 24 from moving in the front-rear direction with respect to the outer case 20 by the engagement between the engaging claw 40 and the convex portions 46 and 48.

(Other embodiments)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above-described embodiment, after the striker 16 is completely pushed into the latch body 22, the inner case 24 is pushed into the outer case 26 through the latch body 22 by the door 14, whereby the inner case 24 is moved into the outer case 26. It was set as the structure positioned with respect to it. Instead, the inner case 24 is moved by the door 14 via the latch body 22 before the striker 16 is completely pushed into the latch body 22 by a method such as attaching a spacer to the tip of the striker 16 during assembly. The inner case 24 may be positioned with respect to the outer case 26 by being pushed into the case 26.

  Moreover, in the said embodiment, the inner case 24 is positioned with respect to the outer case 26 in the position where the opening part 12B of the cabinet main body 12 was obstruct | occluded by the door 16, ie, the position where the door 16 contacted the cabinet main body 12. The configuration. Instead, at the time of assembly, a position where a predetermined interval is formed between the door 16 and the cabinet body 12 by a method such as sandwiching a spacer between the door 16 and the cabinet body 12, that is, the door 16. The inner case 24 may be positioned with respect to the outer case 26 at a position that does not contact the cabinet body 12.

  Further, in the above embodiment, the positioning means is constituted by the engaging claw 40 as the engaging portion formed in the inner case 24 and the engaging piece 42 as the engaged portion formed in the outer case 20. Instead of this, an engaging claw 40 as an engaging portion may be formed on the outer case 20, and an engaging piece 42 as an engaged portion may be formed on the inner case 24.

  Further, the positioning means is not limited to the engaging claw 40 and the engaging piece 42, and if the inner case 24 is pushed into the outer case 26 and the engaging position moves, the engaging means are engaged with each other. Other configurations such as a pair of saw blade members may be used.

  In the above-described embodiment, the lock cover 26 having the concavo-convex portion 60 and the concavo-convex portion 64 of the inner case 24 are provided as the holding means for holding the inner case 24 in the positioning position. As long as the inner case 24 is held at the positioning position of the outer case 26, other configurations such as screwing may be used. Moreover, it is good also as a structure which does not provide a holding means.

  Moreover, in the said embodiment, although the structure which applied the latch apparatus of this invention to the cabinet main body as an example of a housing | casing and the door as an example of a movable body was demonstrated, the latch apparatus of this invention is a box other than a cabinet main body. The present invention can also be applied to other casings such as a body and other movable bodies such as drawers attached to the casing.

10 Latch device 12 Cabinet body (housing)
14 Door (movable body)
16 Striker 20 Outer Case 22 Latch Body 24 Inner Case 26 Lock Cover 30 Latch Member 31 Slider 32 Latch Lever 40 Engagement Claw (Positioning Means, Engagement Section)
42 Engagement piece (positioning means, engaged part)
46 Convex part of engaging piece 48 Convex part of engaging piece 60 Concavity and convexity (holding means)
64 Concavity and convexity (holding means)

Claims (5)

An outer case fixed to the housing;
A latch body that detachably holds an inserted striker; and
An inner case that incorporates the latch body and is movable in the insertion direction of the striker relative to the outer case;
Positioning means provided on the inner case and the outer case, and positioning the inner case with respect to the outer case by the inner case being pushed into the outer case via the latch body;
A latch device.   The positioning means positions the inner case with respect to the outer case by pushing the inner case into the outer case via the latch body after the striker is completely pushed into the latch body. Item 2. The latch device according to Item 1.   The positioning means includes a plurality of engaging portions formed in one of the inner case and the outer case in the insertion direction, and the other engaging portion formed in the other of the inner case and the outer case. The latch device according to claim 1 or 2, wherein the latch device is an engaged portion.   The latch device according to any one of claims 1 to 3, wherein the inner case is positioned with respect to the outer case at a position where the movable body provided with the striker contacts the housing.   The latch apparatus of any one of Claims 1-4 provided with the holding means for hold | maintaining the said inner case in the said positioning position.