KR101103977B1 - Latch device - Google Patents

Abstract

(Problem) The problem caused by the rotation moment of the engaging body is solved or alleviated, thereby increasing the design freedom of the latch operation force and the like, and eliminating the occurrence of the slide operation sound.

(Solution means) The slide body 2 which has the housing 1, the contact part 22 which contact | connects the to-be-engaged member 9, and the cam groove 27, and is arrange | positioned so that retreat with respect to the housing 1, and the slide The spring member 4 holding the sieve 2 in the direction of protruding from the housing 1 and the slide member 2 are rotatably supported by the rotatable support portion 35, and the protrusion 32 is fitted. The engaging body 3 and the cam groove 27 which are switched to the engaging position which protrudes over the contacting part 22 to enable the latched member 9 to be latched, and to the unlocking position which retreats on the contacting part 22, and the cam groove 27. In the latch device having a pin member (5) for tracing, the engaging body (3) has a center of rotation of the engaging body (3) and a projection part (32) switched to the engaging position of the engaging member. It is characterized by being supported by the slide body 2 so as to face each other in the extraction direction of (9).

Description

Latch device

In particular, the present invention relates to a latch device for use when a first member (for example, a box-shaped body) is to be opened and secured to a second member (for example, a movable body such as a cover). Push-and-push mechanism (which is called a "push lock / push-open mechanism") which latches the caught member on the second member side by pressing operation and releases the locked state of the caught member by the next pressing operation. The present invention relates to a latch device most suitable for the following).

9 illustrates a push latch device disclosed in Patent Document 1. As shown in FIG. In this structure, the housing 2; Slider (30) having a contact portion 32 and the cam groove (5) in contact with the striker 62, which is a caught member, is disposed in the housing (2) to be pressed against the holding force of the spring member 45, the slide body 30 Wow; An engaging body 37 having a protruding portion 39 on the front end side and a convex portion 38c on the proximal end, and rotatably supported by the slide body 30; A trace pin member (6). The engaging body 37 is rotatably supported in the state which fitted the shaft part 37a which protruded at both sides with respect to the axial hole part of the slide body 30, and FIG. 9 according to the positional movement of the slide body 30. FIG. As shown in (b), the protruding portion 39 protrudes over the abutting portion 32 to engage the striker 62 and the abutting portion 39 as shown in Fig. 9 (a). 32) The lockout position is shifted to the above position.

In the unlocking position, the slide body 30 moves to the inlet side of the housing 2 by the holding force of the spring member 45, and the engaging body 37 has the convex portion 38c in the housing 2. The state made to get on the raised part 28 is maintained. In the locking position, the slide body 30 is moved inward against the holding force of the spring member 45 by the pressing force of the striker 62, but at the position after the movement of the cam groove 5 and the pin member 6 The engagement portion 37 is held by engagement, and the engagement portion 37 is tilted by the convex portion 38c moving from the raised portion 28 to the bottom portion (inner surface of the housing 2). ) Is projected in the opening 33 of the slide body 30.

In other words, the latching device shifts the engaging body 37 from the release position to the locked position by the pressing force of the striker 62 against the slide body 30, and also the striker against the slide body 30. Switch from the locked position to the unlocked position by the next pressing force of 62). At this time, since the front end of the spring member 45 is hung on the protruding piece formed in the lower middle of the engaging body 37, the holding force in the process of pushing the slide body 30 to the inside of the housing 2 is reduced. The engaging body 37 is rotated counterclockwise in FIG. 9 with the shaft portion 37a as a supporting point while accumulating the pressure, so that the engaging body 37 can be switched from the unlocking position to the locking position.

As a use form, if the latch apparatus is attached to the apparatus main body 7 side, and the striker 62 is attached to the door 61 side, FIG. 9 (b) shows the door 61 as the apparatus main body ( 7), the striker 62 on the door 61 side is caught by the engaging body 37 constituting the latch device on the appliance main body 7 side. This locking is released as shown in FIG. This structure is the same also in the latch apparatus of patent documents 2 and 3.

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-137725

Patent Document 2: Japanese Patent Application Laid-Open No. 2001-262915

Patent Document 3: Japanese Patent Application Laid-Open No. 2006-22543

In the above-mentioned latching device, when an external force (that is, an external force in a direction in which the door 61 is separated from the main body 7 of the door 61) acts to open the door 61 in the closed state of the door 61, it engages. When the sieve 37 receives a stress in the ejecting direction of the striker 62, the sieve 37 comes into contact with the corresponding portion of the slide body 30 (the inner surface of the frame part defining the opening 33). In this structure, the situation in which the door is unnecessarily opened is prevented by allowing a high locking force between the engaging body 37 and the striker 62 to be obtained by the friction force generated at this time. In addition, when an excessive external force acts on the door, the engaging body 37 is rotated so that the protrusion 39 retreats on the contacting part 32, that is, by switching from the locking position to the unlocking position. Damage is avoided. The output power at this time is called "forced output strength". That is, in the conventional structure, at the locking position of the engaging body 37, the protrusion 39 is formed so as to deviate from the rotation center line of the shaft portion 37a, that is, the engaging body 37, and the striker 62 Is subjected to a rotation moment with the shaft portion 37a as a supporting point when a stress is applied in the extraction direction.

However, since the rotation moment is proportional to the finger load or the spring load of the spring member 45, for example, if the spring load is set weakly, the forced ejection strength is also lowered. Therefore, in the conventional structure, it is difficult to arbitrarily set the latch operation force and the like in the state other than the forced ejection strength, and design freedom is limited in this respect. In the conventional structure, as described above, the protrusion 39 is pressed or frictionally contacted with the corresponding portion of the slide body 30, thereby resisting the rotational moment to secure the target forced ejection strength.

Thus, in the structure in which the protrusion part 39 makes frictional contact with the counterpart of the slide body 30, when a use environment becomes low, for example, pressing contact resistance and frictional resistance will increase by dew condensation, Poor rotation can cause malfunction. In addition, the forced ejection strength becomes irregular, or the slide operation sound due to the pressing contact or friction tends to be generated. In addition, although the technique of patent document 3 eliminated such a malfunction, since a microfabrication is essential, operation becomes difficult when it is made small.

Therefore, the object of the present invention is to solve or alleviate the problems caused by the above-mentioned rotation moment, thereby increasing the design freedom of the latch operation force and the like, reliably eliminating the malfunction, or eliminating the occurrence of the slide operation sound, thereby improving the quality. It's about improving.

In order to achieve the above object, the invention of claim 1 includes: a "housing"; a slide body having abutting portion and a cam groove in contact with the caught member, the slide body being disposed to be retractable with respect to the housing; A spring member held in a protruding direction, the spring member being rotatably supported with respect to the slide body through a rotatable support portion, and a protruding portion protruding from the protruding portion over the abutting portion to enable the caught member to be caught; An engaging body which is switched to a release position for retreating above the contact portion, and a pin member for tracing the cam groove, wherein the slide body is pressed by the caught member to move against the holding force of the spring member. Is held through the cam groove and the pin member at the position after this movement, In the latch device in which the sieve is switched from the unlocked position to the locked position, the engaging body (3) includes the center of rotation of the engaging body (3) and the protrusion part (32) switched to the engaging position of the engaging member. Supported by the slide body 2 so as to face each other in the extraction direction of (9).

In the invention of claim 2, in the invention of claim 1, the engaging body includes a front plate portion; A rear piece portion protruding from the front plate part in a rearward direction; the front plate part comprising the protrusion part; The protrusion is formed in the same direction as the protrusion and maintains a predetermined distance from the protrusion, and has a protrusion for forming a rotating support shaft or a shaft hole. The protrusion has a convex portion formed on a side surface of the protrusion. It is characterized in that the addition to the raised portion formed on the inner side of the housing is switched from the locking position to the unlocking position.

In the invention of claim 1, since the engaging body is supported with respect to the slide body so that the projection center of the engaging body at the rotational center of the engaging body and the engaging position oppose each other in the ejecting direction of the engaging member, For example, in the case of Fig. 4 (a), even if an external force acts to open the door in the closed state (the state in which the engaging body is in the locked position), that is, the external force acts in the direction of the right arrow in Fig. 4 (a), the protruding portion As long as the engaging member is engaged in parallel engagement with each other, the rotation moment (stress to rotate in the direction of releasing the engaging body) is not applied to the engaging body as in the prior art. Therefore, it has the following advantages over the conventional products.

(A) The above forced ejection strength is hardly influenced by the spring load of the spring member, and can be set by the contact shape between the protrusion and the caught member. For example, in the latch device corresponding to the forced ejection strength, it is easily ejected in response to the degree of the forced ejection strength on the contact surface of the projection to the engaging member and / or the contact surface of the engagement member to the projection. The gradient of the direction to be set is set (refer FIG. 5 (c)). In a latch device that does not correspond to the forced extraction strength, the abutting surfaces of each other are set to be perpendicular to the extraction direction.

(B) In this structure, therefore, in order to secure the forced ejection strength, it is not necessary to press or frictionally contact the projection with the counterpart of the slide body (inner surface of the frame partitioning the opening) as in the prior art. Stable operation can be maintained even at low temperatures, and the problem of slide operation noise due to pressing contact or friction can be solved.

In the invention of claim 2, in particular, the front plate portion constituting the engaging body maintains a predetermined distance from the protrusion and the protrusion, and protrudes in the same direction as the protrusion, and has a shaft portion or a shaft hole for the rotational support. By setting it as the structure which has this formed protrusion part, this invention can be implemented easily.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring FIGS. In addition, in the figure, the small parts except the parts of FIGS. 6-8 are simplified. In the following description, details will be given in the order of "device structure", "assembly", and "operation".

(Device structure)

The latch device of this embodiment includes: a housing 1 having one end open; A slide body (2) having an abutting portion (22) and a cam groove (27) in contact with the striker (9), the slide body (2) being arranged to be retractable with respect to the housing (1); It is rotatably supported with respect to the slide body 2, and the engaging position and protrusion part 32 which protrude the protrusion part 32 over the contact part 22 so that the striker 9 can be latched ( 22) the engaging body (3) is switched to the release position to retreat from above; A spring member 4 held in the direction in which the slide body 2 protrudes from the housing 1; A pin member 5 for tracing the cam groove 27; and when the slide body 2 is pressed by the striker 9 to move against the holding force of the spring member 4, It is made up of the push / push catching mechanism which is held through the cam groove 27 and the pin member 5, and the engaging body 3 is switched from the unlocking position to the locking position.

In addition, the latch device is attached to the attachment frame 7a formed on the main assembly 7 of the apparatus shown by the dashed-dotted line of FIG. 1 (b), for example, to the door 8 shown by the dashed-dotted line of FIG. 4 (a). In the case of the use of hanging or peeling the attached striker 9, when the door 8 is pressed in the closed position against the holding force of the holding means (not shown), the door 8 is hooked through the striker 9 When the door 8 is pressed again in the same direction, the latch on the striker 9 is released.

Of course, the use method may be configured such that the latch device is attached to the movable body side such as a door to hang and remove the caught member attached to the apparatus main body side. Moreover, although the housing | casing 1, the slide body 2, and the engagement body 3 are made into the resin molded object, the material may be other than resin.

3 and 6, the housing 1 is partitioned by an upper and lower walls 10 and 11, both side walls 12, and a bottom wall 13, and has a closed tubular shape with one end open. It is. Moreover, the housing 1 is formed so that the outer surface 15 which comprises the one end side of the both side walls 12 may protrude one end to the outer side, As shown to FIG. 1 (b), the main body 7 of apparatuses Is inserted into the attachment frame (7a) to prevent the fall.

On the inner surface of the upper wall 10, a pair of vertical ribs 14 for pin regulation are formed to protrude in pairs corresponding to the U-shape of the pin member 5. Each of the longitudinal ribs 14 extends from the bottom wall 13 to the front side and is formed in a state in which the rear end side is greatly raised so that the positions of both side portions 5b of the U-shaped pin member 5 as shown in FIG. Regulate it.

The lower wall 11 has a penetrating guide groove 11a positioned at the front and rear middle to regulate the moving range of the slide body 2, a shallow introduction groove 11b connected to one end of the guide groove 11a, and Protruding from both sides of the inner surface is formed with a bulge 16 to enable the engaging body 3 to rotate in the unlocking direction.

Both sidewalls 12 are partitioned by a U-shaped slit 12a and are provided with an elastic elastic protrusion 17 for protruding the tip side outward, and an edge portion at the top wall 10 side of four rectangular corners. The tapered part 10a cut out from the front-back substantially middle part to the front of the outer surface 15, and the notch part 12b cut out from the other end side of the taper part 10a to the back side are formed. On the inner surface of the one end side of both side walls 12, the escape part 12c is formed, respectively. The escaping recess 12c is a molding escaping portion for forming the elastic locking protrusion 17 or the like.

The bottom wall 13 has a small slit 13c between the mold extraction hole 13a which penetrates on both lower sides, the substantially L-shaped pin insertion hole 13b which penetrates on both upper sides, and both pin insertion holes 13b. The elastic clamping pieces 13d and 13e partitioned through them, the spring support shaft 18 etc. which protruded in the inner surface are formed. Each pin insertion hole 13b has a width of a hole slightly larger than the diameter of the pin member 5, and a substantially U-shaped pin member 5 can be inserted into the housing 1 from the pin insertion hole 13b. Let's do it. The elastic clamping pieces 13d and 13e are disposed to face each other with a small gap, so that the middle portion 5a of the pin member 5 can be held by a predetermined clamping force in the vertical direction as shown in Fig. 1 (d). do. The support shaft 18 is protruded in the left and right middle. And the pin member 5 is rotatably supported by the elastic clamping pieces 13d and 13e, and the spring member 4 is hold | maintained by the support shaft 18. As shown in FIG. The spring member 4 is a coil spring, and the protruding piece 34 of the engaging body 3 is engaged in the cylindrical portion 26 of the slide body 2 whose proximal end is mounted to the support shaft 18 and the tip is described later. ).

3 and 7, the slide body 2 is formed to protrude toward the rear of the slide body 20 and the slide body 20 disposed at the entrance side of the housing 1, but is wider than the slide body 20. The rear extension 21 is made narrower.

The upper end surface of the slide main body 20 is set as the contact part 22 of the front end surface, and it contacts with the frame part 23 which protrudes forward from the lower side of this front end surface, and forms the opening part 23a. The cavity part 24 partitioned by the upper surface 20a and the both sides 20b in the back side of the part 22, and the axial hole 24a for the rotation support part formed in the same axis in the both sides 20b. Has) As for the cavity part 24, the lower side is opened and the both sides of the part which protrudes the rear extension part 21 of the back surface side which opposes the contact part 22 to the rear outer side through the through-hole 20d. Is open.

The rear extension part 21 is comprised from the upper part 25 which forms the heart-shaped cam groove 27 in both sides, and the lower cylindrical part 26 extended in the same direction as this upper part 25. As shown in FIG. . The cam grooves 27 on both sides have substantially the same shape as shown in FIG. 7 (b), are formed around the protruding island cams 28, and guide grooves 27a extending from the rear side to the front lower side, A latching guide groove 27b and a release guide groove 27d which are located on the front side of the guide groove 27a and separated up and down, and between the guide grooves 27b and 27d, and are also recessed in a rear side. It consists of a groove 27c and a return groove 27e extending rearward from the release guide groove 27d. On the other hand, the cylindrical part 26 forms the cylindrical hole which can loosely fit the front end of the support shaft 18 and the spring member 4 which the inside mentioned above, and is protruded in the front lower side, and the said guide groove ( The projection 26a fitted to 11a) and the small wing part 29 for guides protruding toward both sides from the rear upper side are provided.

As shown in Fig. 3, the U-shaped pin member 5 has a front end 5c which is bent inward with an intermediate portion 5a, both side portions 5b, and a free end side of each side portion 5b. The U-shaped upper width is slightly larger than the lower width. The dimension of the lower width almost coincides with the width dimension between the inner surfaces of both side walls 12 in the housing 1.

3 and 8, the engaging body 3 includes a front plate part 30 and rear pieces 31 and 31 protruding from the front plate part 30 in the rearward direction. The front plate portion 30 has a protrusion portion 32 protruding upward, a protrusion portion 33 protruding in the same direction as the protrusion portion 32 while maintaining a predetermined distance from the protrusion portion 32, and a rear end surface. The protruding piece portion 34 is formed to protrude in the left and right middle of the cylindrical portion 26 is fitted. The protruding portion 32 is sized to enter or retreat from the opening 23a on the slide body 2 side. On both of the protrusions 33, the rotation support shaft portion 35 is formed to protrude on the same axis. The convex part 36 is formed in the rear outer side surface of both rear part parts 31, respectively.

(Assembly)

For each of the above members, for example, the engaging body 3 is first assembled to the slide body 2. In this operation, both shaft portions 35 of the engaging body 3 are inserted into the shaft hole 24a inside the cavity 24 of the slide body 2 in the state of FIG. Then, the engaging body 3 is rotatably supported by the predetermined range with the shaft portion 35 as a supporting point, so that the protrusion part 32 is the opening portion 23a as shown in FIGS. 2 (b) and 4 (c). 2) and the locking position protruded from the opening 23a as shown in Figs. 2 (a) and 4 (a) can be switched to the locking position for pressing the projection 9a of the striker 9 from above. In addition, the engaging body 3 is rotatably supported by the fitting of the shaft hole 24a and the shaft part 35 with respect to the slide body 20 of the slide body 2, and the protrusion part 32 is supported. The contact part 22 is located between the protrusion part 32 and the protrusion part 33 in the state which is arrange | positioned in the latching position which protrudes above the contact part 22 in the opening part 23a, and the protrusion part 32 is The corresponding part is evacuated by the narrowly-formed escape part of the rear extension part 21 in the state which is arrange | positioned at the latch release position which retreats in the opening part 23a.

And the slide body 2 to which the said engaging body 3 was assembled is assembled in the housing 1. In this operation, for example, the spring member 4 is mounted on the support shaft 18 and the pin member 5 is disposed in the housing 1 in advance so as to be rotatable on the bottom wall 13. The U-shaped pin member 5 inserts the both ends 5c into the housing 1 through the respective pin insertion holes 13b, but forcibly inserts the middle portion 5a between the two elastic clamping pieces 13d and 13e. By being clamped, these elastic clamping pieces 13d and 13e are clamped so that rotation is possible. In this clamped state, the pin member 5 is maintained in a standing state in the housing 1, and both side portions 5b are position regulated between the regulating longitudinal rib 14 and the corresponding inner surface.

Subsequently, when the slide body 2 with which the engaging body 3 is assembled is press-fitted into the housing 1, the projection 26a enters and fits into the guide groove 11a through the introduction groove 11b, and the housing It is assembled so as to prevent the fall out of (1). In this press fitting process, the tip of the spring member 4 enters into the cylindrical portion 26 and is caught by the protruding piece portion 34 of the engaging body 3. And, the spring member 4 is increased in the holding force in the process of pressing the slide body 2 inwardly, the engaging position by the engaging body 3 as the support point by the holding force (35) by the holding position Rotation in the direction. In addition, the both ends 5c of the pin member 5 are fitted to the inlet of the corresponding cam groove 27.

(work)

The completed latching device is in a state of use thereof, for example, 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 attachment frame (7a) installed in, and is attached through the elastic locking protrusion (17).

In this attaching state, the latching device generally moves the slide body 2 in the protruding direction by the spring member 4 as shown in Fig. 2 (b) (the projection 26a is the guide groove 11a). Is controlled by abutting the front end face of the stiffening surface thereof} and rotates in the direction in which the protrusion part 32 enters the opening 23a of the slide main body 20. It is made by getting on the highest point. This state is "an unlocking position of the engaging body 3".

Then, when the door 8 is pushed in the direction of the left arrow in Fig. 4 (a) in the closing direction, the slide body 2 resists the holding force of the spring member 4 by the striker 9 and thus the housing 1 It is pushed in the direction of entering into). In this movement process, the engaging body 3 is rotated in the locking position direction with the shaft part 35 as a supporting point. Then, in the engaging body 3, the convex part 36 elastically shifts to the lower side of the ridge part 16, and the protrusion part 32 prevents the protrusion 9a of the striker 9 from falling out at the same time. Will be. At this time, as shown in Fig. 4 (a), the engaging body 3 is guided by the front end 5c of the pin member 5 by the rear movement of the slide body 2 and the engaging body 3. It enters into the locking guide groove 27b from the groove 27a, and is caught by the locking groove 27c when the pressing force in the direction of the left arrow is released. The door 8 is kept closed (locked) by this locking.

When switching from the holding state of the said door 8 to the release state of FIG. 4 (c), as shown in FIG. 4 (b), the door 8 is pushed in the closing direction, and this pressing force is released. Then, both ends 5c of the pin member 5 are returned to the inlet of the guide groove 27a from the locking groove 27c through the release guide groove 27d and the return groove 27e. The engaging body 3 is switched to the original release position.

As described above, the latch device is the same as in the conventional operation, but is improved in the following points.

That is, in the conventional latch device, as used in the "problem to be solved" column, when used in a harsh environment such as a cold district, the protrusion of the engaging body at the engaging position of the engaging body is the inner surface of the opening of the slide body. Because of the frictional contact, the rotation deteriorates due to condensation or the like, and there is a fear that the normal locking operation, that is, switching from the unlocking position to the locking position is not possible.

However, in the structure of this embodiment, the engagement body 3 engages with the rotation center when the engagement body 3 rotates with respect to the slide body 2 as the support body axial part 35 for rotation support parts. The protrusions 32 of the engaging body in the state where the sieve 3 is switched to the locked position are supported so as to face each other in the ejecting direction of the striker 9.

Therefore, in the latch device, as shown in Figs. 5A and 5C, the door 8 is in the closed state (the state in which the engaging body 3 is in the locked position) of the door 8. When an external force that tries to open, i.e., an external force in the direction of the arrow in FIG. As in the prior art, the rotation moment (stress trying to rotate in the direction of releasing the engagement body 3) is not applied to the engagement body 3. As a result, in the latch device, the following developments are possible as compared with the conventional products.

In the structure of the present embodiment, the forced ejection strength described in the "problem to be solved" column (this is the door 8 relative to the door 8 at the locking position of the engaging body 3 as shown in Fig. 5A). When an excessive external force is applied in the direction of the arrow of Fig. 5 (a) in the opening direction, the engaging portion 3 is rotated so that the protrusion 32 degenerates on the contact portion 22, i.e. release The strength at that time to be switched to the position to avoid breakage eliminates the frictional contact of the protruding portion 32 of the engaging body 3 with respect to the inner surface of the opening 23a on the slide body 2 side (this is illustrated in FIG. As shown in the enlarged view of 5 (c), the gap is set between the opening part 23a and the protrusion part 32}, and it is hardly affected by the spring load of the spring member 4, It can set by the contact shape of the protrusion part 32 of the sieve 3, and the protrusion 9a of the striker 9. As shown in FIG.

That is, when configured as a latch device corresponding to the forced extraction strength, the contact surface of the protruding portion 32 with respect to the striker 9 (protrusion 9a, etc.) or / and the striker with respect to the protruding portion 32 On the contact surface of 9), set the gradient in the direction that is easily extracted in accordance with the degree of forced ejection strength. 5 (c) shows a configuration in which the contact surface of the protruding portion 32 with respect to the striker 9 is inclined by a very small angle x as an example thereof. On the contrary, in the case of configuring as a latch device that does not correspond to the forced ejection strength, the abutment surfaces of each other are set to be perpendicular to the ejection direction. By doing in this way, in the structure of this embodiment, in order to ensure the forced extraction strength, it is not necessary to press-contact or frictionally contact the projection with the counterpart of the slide body (inner surface of the frame partitioning the opening) as in the prior art. Therefore, stable operation can be maintained even at a low temperature, and the problem of slide operation sound due to pressing contact or friction can be easily and easily solved.

In addition, this invention is not restrict | limited to the above-mentioned embodiment at all, If the requirement specified by a claim is provided, various changes are possible as needed. As an example, as a structure of the rotation support part which rotatably supports the engaging body 3 to the slide body 2, the engaging body 3 is provided with the shaft hole instead of the shaft part 35, and the slide body ( 2) a shaft portion is formed in place of the shaft hole 24a, and the fitting body 3 is rotatably supported with respect to the slide body 2 through the fitting of these shaft parts and the shaft hole, or the slide body ( Both shafts 2 and the engaging body 3 may be formed, and the engaging body 3 may be rotatably supported with respect to the slide body 2 through the shaft fitted to these shaft holes.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the latching device of embodiment of this invention at the latching position of an engagement body, (a) is a front view, (b) is a top view, (c) is a side view, (d) is a rear view.

In FIG. 2, (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 said latched body to the unlocking position.

3 is a schematic exploded view showing a relationship between members of the latch device;

Fig. 4 is a sectional view taken along the line AA of Fig. 1 (a) to show the normal operation of the latch device, in which (a) is a cross sectional view in which the engaging body is switched to a latching position, and (b) (C) is a cross-sectional view in a state in which the engaging body is switched to an unlocked position when the lock is released.

5 is a cross-sectional view of the latch device in line AA of FIG. 1 (a), (a) is a view in which the striker is subjected to an external force in the dispensing direction, and (b) is a state in which the striker is ejected by an external force; (C) is an enlarged view of portion A of (a)

Fig. 6 is a view showing the housing of the latch device, in which (a) is a side view, (b) is a front view, (c) is a sectional view taken along line B-B in (a), and (d) is a sectional view taken on line C-C in (b).

Fig. 7 is a view showing a slide body of the latch device, wherein (a) is a top view, (b) is a side view, (c) is a bottom view, (d) is a rear view, and (e) is a DD line of (d). Cross-section

8 is a view showing the engaging body of the latch device, wherein (a) is a top view, (b) is a rear view, (c) is a side view, (d) is a front view, and (e) is a bottom view.

(A), (b) in FIG. 9 is an operation diagram showing the latch device in the conventional release position and the locking position.

 Explanation of symbols on the main parts of the drawings

1-housing 11a-guide groove

13-Bottom Wall 16-Ridge

18-support shaft 2-slide

20-Slide Body 22-Abutment

23-mold part 24a-shaft hole (rotation support)

3-engaging body 30-front panel

31-Sequel 32-Stones

33-protrusion 4-spring member

5-Pin Member 5a-Middle

5b-side 5c-tip

7-Machine body 7a-Mounting frame

8-Door 9-Striker

21-rear extension 25-upper part

26-Cylindrical 27-Camhome

27c-Locking groove 35-Shaft (rotary support)

Claims (2)

A housing 1; A slide body (2) having an abutting portion (22) and a cam groove (27) in contact with the caught member (9), the slide body (2) being arranged to be retractable with respect to the housing (1); A spring member (4) held in the direction in which the slide body (2) protrudes from the housing (1); It is rotatably supported with respect to the slide body 2 through the rotation support part 35, and protrudes the protrusion part 32 of the front end side over the said contact part 22 so that the caught member 9 can be caught. A catching body (3) which is switched to a catching position and a catching release position to retreat on the contact portion (22); A pin member (5) for tracing the cam groove (27), wherein the slide member (2) is pressed by the caught member (9) to move against the holding force of the spring member (4). In the latch device, which is held through the cam groove 27 and the pin member 5 at the position after the movement, and the engaging body 3 is switched from the unlocking position to the locking position, The engaging body 3 is such that the center of rotation of the engaging body 3 and the protrusion 32 switched to the engaging position face each other in the ejection direction of the engaging member 9. And the slide device (2). The method according to claim 1, The engaging body (3) is the front plate portion 30; Consists of the rear portion (31, 31) protruding in the rearward direction from the front plate portion 30, The front plate portion 30 and the projection portion 32; While maintaining a predetermined distance from the protrusion 32 and protruding in the same direction as the protrusion 32, the shaft for the rotary support 35 or the projection 33 is formed with a shaft hole; The rear piece portion 31 has a convex portion 36 formed on the side, And the convex portion (36) climbs on the ridge (16) formed inside the housing (1) to switch from the locking position to the unlocking position.

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