JP2010106478A - Latch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To heighten the degree of freedom of design of a latch operating force etc. and eliminate generation of a sliding noise by eliminating or reducing a malfunction caused by rotation moment of an engaging body. <P>SOLUTION: This latch device includes: a housing 1; a sliding body 2 which has an abutment portion 22 abutting on a member 9 to be engaged/disengaged and a cam groove 27, and which is arranged in such a manner as to protrude/recede from/into the housing; a spring member 4 which urges the sliding body 2 in the direction of protrusion from the housing; an engaging body 3 which is turnably supported on the sliding body via a pivoting portion, and which protrudes a claw portion 32 onto the abutment portion 22, so as to switch between a locking position to have the member 9 capable of locking and an unlocking position to recede from the top of the abutment portion 22; and a pin member 5 which traces the cam groove 27. In the latch device, the engaging body 3 is supported on the sliding body 2 in such a manner that the center of rotation having a pivoting portion 35 of the engaging body 3 as a supporting point and the claw portion 32 in the state of having the engaging body 3 switched to the locking position face each other in the direction of pulling out the member 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is the first push operation among latch devices used when a second member (for example, a movable body such as a lid) is detachably locked to a first member (for example, a box-shaped base). The push / push locking mechanism that locks the engaged / disengaged member on the second member side and releases the locking by the next pushing operation (this is called a push-lock / push-open mechanism or abbreviated as a push type) The present invention also relates to a latch device suitable for the same).

  FIG. 9 shows a push-type latch device disclosed in Patent Document 1. In this structure, the housing 2 has the abutting portion 32 and the cam groove 5 that come into contact with the striker 62 that is a member to be engaged / disengaged, and is disposed in the housing 2 to be pressed against the urging force of the spring member 45. A sliding body 30, a distal end side claw portion 39 and a proximal end convex portion 38c, and an engaging body 37 pivotally supported by the sliding body 30, and a tracing pin member 6. . Among these, the engagement body 37 is pivotally supported in a state in which the shaft portions 37 a provided on both sides are fitted to the corresponding shaft hole portions of the slide body 30, and the position movement of the slide body 30 causes the same (b). Thus, the claw portion 39 is projected onto the abutting portion 32 to be switched to a locking position where the striker 62 is locked, and the claw portion 39 is switched to a locking release position where the claw portion 39 is retracted from the abutting portion 32 as shown in FIG. . In the unlocking position, the sliding body 30 is moved to the inlet side of the housing 2 by the urging force of the spring member 45, and the engaging body 37 rides the protruding portion 38 c on the overhanging portion 28 provided in the housing 2. Keep state. In the locking position, the sliding body 30 is moved to the back side against the biasing force of the spring member 45 by the pushing force of the striker 62, and is held at the position after the movement through the engagement of the cam groove 5 and the pin member 6. Then, the engaging body 37 moves the convex portion 38c to a portion lowered from the protruding portion 28, and tilts to project the claw portion 39 from the inside of the opening 33 on the sliding body side.

In other words, the latch device described above switches the engaging body 37 from the unlocking position to the locking position by the pressing force of the striker 62 against the sliding body 30 and is locked by the next pressing force of the striker 62 against the sliding body 30. Switch from position to unlocking position. At that time, the spring member 45 is locked to a projecting piece provided on the lower middle of the engagement body 37 on the upper side, while accumulating urging force in the process of the sliding body 30 being pushed and moved to the back, The engaging body 37 is rotated counterclockwise in the same figure with the shaft portion 37a as a fulcrum, and can be switched from the unlocking position to the locking position. As a usage form, when the latch device is attached to the main body side and the striker 62 is provided on the door side, the door is held (locked) in FIG. 9B, and the door side striker 62 is the main body. It is latched by the engaging body 37 constituting the side latch device. When the door is pushed again toward the main body, the pin member 6 is released from the locking groove of the cam groove 5 and is unlocked as shown in FIG. Such a structure is the same in the latch devices of Patent Documents 2 and 3.
JP 2004-137725 A JP 2001-262915 A JP 2006-22543 A

  In the above-described latch device, when an external force (external force in a direction to separate the door from the main body) is applied to open the door when the door is closed, the engagement body 37 receives the stress in the pulling direction of the striker 62 and slides 30. The corresponding portion (the inner surface of the frame portion defining the opening 33) is pressed against. In this structure, a high locking force is obtained between the engaging body 37 and the striker 62 by the frictional force generated at that time, thereby preventing the door from being opened carelessly. Further, when an excessive external force is applied to the door, the engagement body 37 is rotated so that the claw portion 39 retracts from the abutting portion 32, that is, the engagement position is switched from the engagement position to the engagement release position. The damage is avoided. The pulling force at that time is referred to as excessive pulling strength. That is, in the conventional structure, when the engagement body 37 is in the locked position, the claw portion 39a is provided so as to be disengaged from the shaft 37a, that is, on the rotation center line of the engagement body 37, and when the stress in the pulling direction of the striker 62 is received, A rotational moment is generated with the portion 37a as a fulcrum.

  However, this rotational moment is proportional to the urging load or the spring load as the spring member 45. For example, if the spring load is set weak, the unreasonable strength decreases. For this reason, with the conventional structure, it is difficult to set the latch operation force and the like separately from the unreasonable strength, and the design flexibility is restricted from that point. Further, in the conventional structure, as described above, the claw portion 39 is brought into pressure contact or frictional contact with the corresponding portion of the sliding body 30 to secure the desired unreasonable strength against the rotational moment. If the claw portion 39 has a structure in which the claw portion 39 is in frictional contact with the corresponding portion of the sliding body 30, for example, when the usage environment is low, the pressure resistance and friction resistance increase due to condensation, and the rotation of the engagement body is impaired. This can cause malfunction. In addition, it is easy to generate sliding noise due to unreasonable variation in strength and pressure contact and friction. Note that the technique of Patent Document 3 eliminates such malfunctions, but requires microfabrication, so that it is difficult to implement if the size is reduced.

  Therefore, the object of the present invention is to eliminate or alleviate the problems caused by the rotational moment described above, thereby expanding the design freedom of the latch operating force, etc., reliably eliminating malfunctions, and sliding noise. It is to eliminate the occurrence of and improve quality.

  In order to achieve the above object, the present invention provides a housing, a sliding body that has an abutting portion and a cam groove that come into contact with a member to be engaged and disengaged, and is disposed so as to be able to advance and retreat with respect to the housing. A spring member that is biased in a protruding direction from the sliding member, and is supported rotatably with respect to the sliding body via a pivotal support portion. An engaging body that can be switched to a locking position that enables locking and an unlocking position that retreats from above the abutting portion; and a pin member that traces the cam groove; and the spring is pressed to press the spring In a latch device in which when the member is moved against the urging force of the member, the member is held at the moved position via the cam groove and the pin member, and the engaging body is switched from the unlocking position to the locking position. The engaging body is opposed to the sliding body. The rotation center of the engaging body with the pivot portion serving as a fulcrum and the claw portion in a state in which the engaging body is switched to the locking position are supported so as to face each other in the extraction direction of the engaged / disengaged member. It is characterized by having.

  According to a second aspect of the present invention, in the above invention, the engaging body includes a front plate portion and a rear piece portion protruding rearward from the front plate portion, and the front plate portion is the claw portion and the claw. A projecting portion having a predetermined clearance with the claw portion and projecting in the same direction as the claw portion and having a pivot portion shaft portion or a projection portion with a shaft hole, and the rear piece portion provided on a side surface. And the protrusion is switched from the locking position to the locking release position by riding on an overhang provided on the inside of the housing.

  According to the first aspect of the present invention, the engaging body is pivotally supported with respect to the sliding body so that the rotation center of the engaging body and the claw portion of the engaging body at the locking position face each other in the direction in which the engaged member is pulled out. Therefore, for example, in the case of FIG. 4 (a), even if an external force that attempts to open the door in the closed state of the door (the engaging body is in the locked position), that is, an external force in the right arrow direction in FIG. As long as the part and the engaged / disengaged member are abutted and engaged in parallel, the engaging body is not subjected to a rotational moment (stress to rotate in the direction of releasing the engaging body) as in the conventional product. Therefore, it has the following advantages over the conventional product.

(A) The above-described forcible pull-out strength is hardly influenced by the spring load of the spring member, and can be set by the contact shape between the claw portion and the engaged / disengaged member. For example, in a latch device that supports forced removal, the contact surface of the claw portion with respect to the engaged / disengaged member and / or the contact surface of the engaged / disengaged member with respect to the claw portion is set with a gradient in a direction that facilitates removal according to the degree of forced removal. (See FIG. 5C). In the latch device that can not be forcibly removed, the contact surfaces are set to be perpendicular to the drawing direction.
(A) Therefore, in this structure, it is not necessary to press and frictionally contact the claw portion with the corresponding portion of the sliding body (the inner surface of the frame portion that defines the opening) in order to ensure the unreasonable strength. The stable operation can be maintained even at low temperatures, and the problem of sliding noise caused by pressure contact and friction can be solved.

  In the invention of claim 2, compared to the conventional product, the front plate part that constitutes the engaging body particularly has a claw part and a shaft part or shaft that protrudes in the same direction as the claw part while maintaining a predetermined clearance from the claw part. The present invention can be easily implemented by the structure having the protrusion with the hole.

  The best mode of the present invention will be described below with reference to FIGS. In the drawings, the details are simplified except for the parts drawings of FIGS. In the following description, the device structure, assembly, and operation will be described in detail.

The latch device in the form of (device structure) includes a housing 1 that is open on one end side, a sliding body 2 that has an abutting portion 22 that abuts against the striker 9 and a cam groove 27 and that is disposed so as to be able to advance and retreat relative to the housing 1. The locking position is supported rotatably with respect to the sliding body 2, and the claw portion 32 protrudes above the abutting portion 22 so that the striker 9 can be locked, and the unlocking retreats from above the abutting portion 22. An engaging body 3 that can be switched to a position, a spring member 4 that urges the sliding body 2 in a direction to protrude from the housing 1, and a pin member 5 that traces the cam groove 27, and the sliding body 2 is pressed. When moved against the urging force of the spring member 4, the position after the movement is held via the cam groove 27 and the pin member 5, and the engaging body 3 is switched from the unlocking position to the locking position. Consists of push-push locking mechanism

  Further, the latch device is attached to, for example, a mounting frame 7a provided on the main body 7 side of the equipment shown by the one-dot chain line in FIG. 1B, and the door 8 shown by the one-dot chain line in FIG. In the use example of engaging and disengaging the striker 9 attached to the door, when the door 8 is pushed toward the closed position against the biasing force of the biasing means (not shown), the door 8 is locked via the striker 9. When the door 8 is further pushed in the same direction, the lock on the striker 9 is released. Of course, as a usage method, the latch device may be attached to the movable body side such as a door and the engaged / disengaged member attached to the main body side of the equipment may be engaged / disengaged. Moreover, although the housing 1, the sliding body 2, and the engaging body 3 are resin molded products, materials other than resin may be used.

  Here, as shown in FIGS. 3 and 6, the housing 1 has a bottomed cylindrical shape in which the inside is defined by the upper and lower walls 10, 11, both side walls 12, and the bottom wall 13, and one end side is opened. . In addition, the outer surface 15 constituting one end side of the both side walls 12 protrudes one step, and the housing 1 is inserted into the mounting frame 7a on the main body side so as to be prevented from coming off as shown in FIG. Among these, on the inner surface of the upper wall 10, pin restricting vertical ribs 14 project in pairs corresponding to the U shape of the pin member 5. Each vertical rib 14 extends from the bottom wall 13 to the front side, and is provided in a state in which the rear side protrudes one step larger, and restricts the U-shaped side portions 5b of the pin member 5 as shown in FIG. The lower wall 11 is located in the middle of the front and rear, and penetrates the guide groove 11a that restricts the moving range of the sliding body 2, the shallow introduction groove 11b that communicates with the guide groove 11a from one end side, and the inner wall protrudes on both sides. An overhanging portion 16 is provided that allows the engaging body 3 to rotate in the unlocking direction. The both side walls 12 are provided with elastic locking claws 17 that are partitioned by the U-shaped slits 12a and project the tip side outward, and each corner on one side of the opposing wall among the four corners of the rectangle. A taper 10a that is cut out from a substantially middle part in the front-rear direction to the front of the outer surface 15 and a notch part 12b that is provided on the rear side of the taper 10a. Relief recesses 12c are respectively provided on the inner surfaces at one end of both side walls 12 so as to face each other. The relief recess 12c is a relief for a mold for forming the elastic locking claw 17 and the like.

  The bottom wall 13 is formed with a die-cutting hole 13a penetrating on both lower sides, a substantially L-shaped pin insertion hole 13b penetrating on both upper sides, and a small slit 13c between the pin insertion holes 13b. The elastic clamping pieces 13d and 13e, the spring support shaft 18 protruding from the inner surface, and the like are provided. Each pin insertion hole 13b has a hole width slightly larger than the wire diameter of the pin member 5, and allows the substantially U-shaped pin member 5 to be inserted into the case from this hole. The elastic clamping pieces 13d and 13e are arranged to face each other through a small gap so that the U-shaped intermediate portion 5a of the pin member 5 can be held with a predetermined clamping force from the front-rear direction as shown in FIG. The support shaft 18 projects in the middle of the left and right. The pin member 5 is pivotally supported by the elastic clamping pieces 13 d and 13 e, and the spring member 4 is held by the support shaft 18. The spring member 4 is a coil spring, the lower side is mounted on the support shaft 18, and the upper side is locked to the protruding piece part 34 of the engaging body 3 from within a cylindrical part 26 of the sliding body 2 described later.

  As shown in FIGS. 3 and 7, the sliding body 2 includes a main body 20 disposed on the entrance / exit side of the housing 1, and a rear extension portion 21 that protrudes behind the main body 20 and is narrower than the main body 20. . The main body 20 has an upper end surface of the front end surface set to the abutting portion 22, a frame portion 23 that protrudes forward from the lower side of the front end surface to form an opening 23 a, and a rear portion of the abutting portion 22. It has a hollow portion 24 provided on the side and defined by the upper surface 20a and both side surfaces 20b, and a shaft hole 24a for a pivot portion provided on the both side surfaces 20b on the same axis. The cavity portion 24 opens at the lower side, and also opens at the rear outer side through a through hole 20d on both sides of the portion protruding the rear extension portion 21 on the rear surface side facing the abutting portion 22. ing.

  The rear extension 21 includes an upper portion 25 having heart-shaped cam grooves 27 on both sides and a lower cylindrical portion 26 extending in the same direction as the upper portion 25. The cam grooves 27 on both sides are substantially the same shape as shown in FIG. 7 (d), are provided around the convex cam island 28, and extend from the rear side to the front lower side, and on the front side of the guide groove 27a. The guide groove 27b for release and the guide groove 27c for release which are separated from each other up and down, the concave lock groove 27c located between the guide grooves 27b and 27d and on the rear side, and the guide groove 27d to the rear side. The return groove 27e extends and the like. On the other hand, the cylinder portion 26 forms a cylinder hole in which the inside of the cylinder can be loosely fitted on the upper side of the support shaft 18 and the spring member 4, and is projected from the front lower side to fit into the guide groove 11a. It has a projection 26a to be joined, and a guide wing 29 projecting toward both sides on the rear upper side.

  As in the prior art, the pin member 5 comprises a U-shaped intermediate portion 5a, both side portions 5b, and a tip 5c bent inward at the free end side of each side portion 5b as shown in FIG. The width dimension is formed slightly larger than the lower width dimension. The lower width dimension is in the housing 1 and substantially coincides with the width dimension between the inner surfaces of the side walls 21.

  As shown in FIGS. 3 and 8, the engagement body 3 includes a front plate portion 30, rear piece portions 31, 31 that protrude rearward from the front plate portion 30. The front plate part 30 has a claw part 32 protruding upward, a protrusion part 33 that protrudes in the same direction as the claw part 32 while maintaining a predetermined gap with the claw part 32, and is protruded in the left and right middle of the rear end surface. A projecting piece portion 34 that enters the cylinder of the cylinder portion 26 is provided. The nail | claw part 32 is a magnitude | size which can be freely entered into or retracted into the opening 23a on the sliding body side. The two projecting portions 33 are formed with pivot shaft portions 35 projecting on the same axis. Convex portions 36 are respectively provided on the rear outer surfaces of both rear piece portions 31.

(Assembly) In each of the above members, for example, the engaging body 3 is first assembled to the sliding body 2. In this operation, the shaft portions 35 on both sides are pushed into the shaft hole 24a from the inside of the hollow portion of the sliding body 2 from the state of FIG. Then, the engaging body 3 is pivotally supported by a predetermined range with the shaft portion 35 as a fulcrum, and the claw portion 32 is unlocked within the opening 23a as shown in FIGS. 2 (b) and 4 (c). As shown in FIGS. 2 (a) and 4 (a), the position can be switched to a locking position that protrudes from the opening 23a and presses the convex portion of the striker 9 or the claw 9a from above. Further, the above engaging body 3 is pivotally supported on the sliding body side main body 20 through the fitting of the shaft hole 24a and the shaft portion 35, and the claw portion 32 protrudes from the opening 23a onto the abutting portion 22. In a state where the abutting portion 22 is positioned between the claw portion 32 and the protruding portion 33 in a state where the claw portion 32 is disposed at the locking position, the claw portion 32 is retracted into the opening 23a and is disposed at the locking release position. The corresponding portion is allowed to escape to the narrow relief portion of the rear extension 21.

  Next, the sliding body 2 with the engaging body 3 is assembled in the housing 1. In this operation, for example, the spring member 4 is mounted on the support shaft 18 in advance, and the pin member 5 is swingably held on the bottom wall 13 and disposed in the housing 1. The pin member 5 is formed by inserting the distal ends 5c on both sides into the housing from the pin insertion holes 13b and then forcibly moving the U-shaped intermediate portion 5a toward the elastic clamping pieces 13d and 13e. Is sandwiched between. In this clamping state, the pin member 5 is held upright in the housing 1, and the U-shaped side portions 5b are regulated between the regulating vertical rib 14 and the corresponding inner side surface. Further, when the sliding body 2 with the engaging body 3 is pushed into the housing 1, the sliding body 2 is prevented from being detached from the housing 1 and assembled when the protrusion 26 a is fitted into the guide groove 11 a from the introduction groove 11 b. . In this pushing-in process, the upper side of the spring member 4 enters the cylindrical portion 26 and comes into contact with the protruding piece portion 34 of the engaging body 3. The spring member 4 increases the urging force in the process in which the sliding body 2 is pressed and moved to the back, and the urging force enables the engaging body 3 to rotate in the locking position direction with the shaft portion 35 as a fulcrum. Further, both ends 5 c of the pin member 5 enter the groove entrance of the corresponding cam groove 27.

(Operation) The completed latch device is provided in the apparatus-side main body 7 as shown in FIG. 1 (b) corresponding to the striker 9 attached to the door 8 as shown in FIG. 4 (a). It is inserted into the attached mounting frame 7a and attached via an elastic locking claw 17 or the like. In the mounted state, the latch device is normally regulated by the sliding member 2 being urged in the protruding direction by the spring member 4 as shown in FIG. 2B (this movement is controlled by the protrusion 26a hitting the front end surface of the guide groove 11a). ) And the claw portion 32 is rotated in a direction in which the claw portion 32 enters the sliding body side opening 23a (this rotation rides on the highest portion of the protruding portion 16). This state is the “lock release position of the engagement body 3”. When the door 8 is pushed in the direction of the left arrow in FIG. 4A, which is the closing direction, the sliding body 2 is pushed by the striker 9 in the direction of sunk in the housing against the urging force of the spring member 4. Moved. In the moving process, the engaging body 3 is rotated in the locking position direction with the shaft portion 35 as a fulcrum. Then, in the engaging body 3, the convex portion 36 elastically shifts to the lower side of the overhang portion 16, and at the same time, the striker claw 9 a is prevented from coming off via the claw portion 32. At this time, as shown in FIG. 4 (a), the engagement body 3 enters the locking guide groove 27b from the guide groove 27a through the sliding body 2 and the rearward movement of the engagement body 3 as shown in FIG. When the pressing force in the direction of the arrow is released, it is locked in the locking groove 27c. By this locking, the door 8 is held (locked) in the closed state.

  When switching from the above-described door holding state to the release state of FIG. 4C, the pushing force is released after the door is pushed in the closing direction as shown in FIG. 4B. Then, both ends 5c of the pin member 5 return to the groove inlet from the guide groove 27a through the release guide groove 27d and the return groove 27e described above from the above-described locking groove 27c, and at the same time, the engagement body 3 is released from the initial state. Switch to position. This latch device is the same as the conventional one in the normal operation as described above, but is improved in the following points.

  That is, in the conventional latch device, when used in a severe environment such as a cold district as described in the problem, the engaging body is in frictional contact with the inner surface of the opening of the sliding body at the locking position. There is a possibility that the rotation becomes difficult and the normal locking operation, that is, the switching from the locking release position to the locking position cannot be performed. However, in the above structure, the engagement body 3 is rotated with respect to the sliding body 2, the rotation center line when the engagement body 3 rotates with the shaft portion 35 and the shaft hole 24 a fitted or pivoted as a fulcrum, and the engagement body 3 is The claw portion 30 of the engaging body in the state switched to the locking position is pivotally supported so as to oppose the striker 9 in the extraction direction. Therefore, in this latch device, as shown in FIGS. 5 (a) and 5 (c), the external force for opening the door 8 when the door 8 is closed (the engaging body 3 is in the locking position), that is, When an external force in the direction of the right arrow is applied, for example, as long as the claw portion 32 and the striker claw 9a are abutted and engaged in parallel, the rotational moment (the engagement body 3 is unlocked) as in the conventional product. (Stress to rotate in the direction) is not applied. As a result, this latch device can be expanded as follows compared to the conventional product.

  In this structure, the excessive pulling strength described in the problem (this is an excessive external force in the right arrow direction of the figure, which is the door opening direction with respect to the door at the locking position of the engaging body 3 as shown in FIG. 5A). When the engaging body 3 is rotated so that the engaging body 3 retreats the claw portion 32 from above the abutting portion 22, that is, it is switched to the unlocking position to avoid damage, the strength at that time) The frictional contact of the claw portion 32 of the engaging body with the inner surface of the opening 23a is eliminated (this is because a gap is set between the opening 23a and the claw portion 32 as shown in the enlarged view of FIG. 5C). It is hardly influenced by the spring load of the spring member 4, and can be set by the contact shape between the claw portion 32 of the engaging body 3 and the claw 9 a of the striker 9.

  That is, when the latch device is configured to be forcibly removed, the contact surface of the claw portion 32 with respect to the striker 9 (the claw 9a, etc.) and / or the contact surface of the striker 9 with respect to the claw portion 32 may be selected depending on the degree of force removal. Set the gradient in a direction that makes it easy to pull out. FIG. 5C shows a configuration in which the contact surface of the claw 32 with respect to the striker 9 is inclined by a minute angle x as an example. On the other hand, when the latch device is configured so as not to be forcibly removed, the contact surfaces are set to be perpendicular to the drawing direction. Thus, in this structure, it is not necessary to press and frictionally contact the claw portion with the corresponding portion of the sliding body (the inner surface of the frame portion that defines the opening) in order to ensure the unreasonable strength. The stable operation can be maintained even at low temperatures, and the problem of sliding noise caused by pressure contact and friction can be easily solved.

  It should be noted that the present invention is not limited to the above-described embodiments, and can be variously changed as necessary as long as the requirements specified in the claims are provided. As an example, the structure in which the engaging body 3 is pivotally supported by the sliding body 2 is provided with a shaft portion instead of the shaft hole 24a, and the engaging body 3 is provided with a shaft hole instead of the shaft portion 35. Then, the engaging body 3 is pivotally supported with respect to the sliding body 2 through the fitting of the shaft portion and the shaft hole, and both the sliding body 2 and the engaging body 3 are provided with shaft holes. A configuration may be adopted in which the sliding body 2 is pivotally supported via a shaft inserted through the shaft holes.

The latch apparatus of this invention form is shown by the latching position of an engaging body, (a) is a front view, (b) is a top view, (c) is a side view, (d) is a rear view. (A) is a schematic perspective view which shows the latch apparatus of FIG. 1, (b) is a schematic perspective view in the state which switched the said engaging body to the latch release position. It is a schematic exploded view which shows the relationship between the members of the said latch apparatus. The normal operation of the latch device is shown in a cross-sectional view along the line A-A in FIG. 1, (a) is a diagram in a state in which the engaging body is switched to the locking position, and (b) is the unlocking of the engaging body. The figure in the state of time, (c) is a figure in the state which switched the said engaging body to the latching release position. FIG. 1 is a cross-sectional view taken along line AA in FIG. 1, wherein (a) shows a state in which the striker receives an external force in the pulling direction, and (b) shows a state in which the striker is pulled out. FIG. 4C is an enlarged view of part A of FIG. The housing of the said latch apparatus is shown separately, (a) is a side view, (b) is a front view, (c) is (a) BB sectional drawing, (d) is (b) CC sectional view. It is. 1A shows a single sliding body of the latch device, FIG. 3A is a top view, FIG. 3B is a side view, FIG. 3C is a bottom view, FIG. 3D is a rear view, and FIG. FIG. The engaging body single item of the said latch apparatus is shown, (a) is a top view, (b) is a rear view, (c) is a side view, (d) is a front view, (e) is a bottom view. (A), (b) It is an operation | movement figure which shows the conventional latch apparatus in the latch release position and a latching position.

Explanation of symbols

1 ... Housing (11a is a guide groove, 13 is a bottom wall, 16 is an overhang part, 18 is a support shaft)
2 ... Sliding body (20 is a main body, 22 is an abutting part, 23 is a frame part, 24a is a shaft hole)
3 ... engaging body (30 is front plate part, 31 is rear piece part, 32 is claw part, 33 is protrusion part)
4 ... Spring member 5 ... Pin member (5a is an intermediate part, 5b is a side part, and 5c is a tip)
7 ... Body (7a is a mounting frame)
8 ... Door (9 is a striker which is a member to be engaged / disengaged)
21 ... rear extension part (25 is an upper part, 26 is a cylinder part)
27 ... Cam groove (27c is a locking groove)
35 ... Shaft

Claims (2)

A housing, a sliding body that has an abutting portion and a cam groove that come into contact with a member to be engaged and disengaged, and is arranged so as to be able to advance and retreat with respect to the housing, and urges the sliding body in a direction of projecting from the housing. A spring member, a locking position that is rotatably supported with respect to the sliding body via a pivotal support, and that protrudes a claw portion on a distal end side onto the abutting portion so that the engaged / disengaged member can be locked; and An engaging body that is switched to an unlocking position that retreats from above the abutting portion, and a pin member that traces the cam groove, and the sliding body is pressed and moved against the urging force of the spring member. Then, in the latch device that is held through the cam groove and the pin member in the position after the movement, and the engaging body is switched from the unlocking position to the locking position,
The engagement body is configured such that the center of rotation with respect to the sliding body as a fulcrum with respect to the sliding body and the claw portion in a state in which the engagement body is switched to the locking position. A latch device, wherein the latch device is supported so as to oppose the direction in which the member is extracted.   The engaging body includes a front plate portion and a rear piece portion protruding rearward from the front plate portion, and the front plate portion maintains a predetermined gap with the claw portion and the claw portion, and the claw portion. Projecting in the same direction and having a pivot part shaft part or a projecting part with a shaft hole, the rear piece part has a convex part provided on a side surface, and the convex part is inside the housing. 2. The latch device according to claim 1, wherein the latch device is switched from the lock position to the lock release position by riding on an overhanging portion provided on the latch.

Images