JP2013111139A - Drawer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch device for drawers having an excellent engagement function with a furniture body.SOLUTION: A latch claw 11 is attached to a holder part 26 provided on a base 8 constituting a drawer 2 so as to slide to the right/left and horizontally turn, and is urged in the advancing direction by a spring. When a knob is not pulled, the latch claw 11 is retained by a second association member 13 to prevent horizontal turning and allow the right/left sliding alone. When the drawer 2 is pushed in, the latch claw 11 is slid in the right/left direction to be fitted in and engaged with an engagement hole 33 of the body 1. When the knob is pulled, a restriction by the second association member 13 is released and the latch claw 11 is escaped from the engagement hole 33 and rotationally turns. When the knob is not pulled, the latch claw 11, unless sliding in the right/left, is not removed from the engagement hole 33, and the disengagement direction orthogonally crosses with the advancing direction of the drawer 2, so that the latch claw exerts a high engagement-state retaining function.

Description

  The present invention relates to a drawer provided with a latch device.

  The drawer latch device basically has a pull handle that is operated by a person, a latch claw that engages with an engagement portion provided on the inner side of the furniture body, and an interlock that makes the latch claw free by the movement of the pull handle. Various proposals have been made for each member.

  Usually, the handle is of a pivot type and is often provided in a pull hole formed in the front plate (end plate) of the drawer body. It is disclosed that a vertically long handle is disposed on the back side.

  On the other hand, it is normal that the latch claw is engaged with and disengaged from the engaging portion of the furniture body only by horizontal rotation (see also Patent Documents 2 and 3). Then, the engagement with the main body is released, and when the pulling hand is pulled as it is, the pulling out is pulled forward. In addition, an inclined guide surface for enabling so-called kicking engagement is formed at the tip of the latch claw, and when the drawer is pushed in, the latch claw once rotates against the spring and rotates. At the same time as pushing in, the spring returns and rotates to engage with the engaging portion of the furniture body.

JP 2006-291573 A Japanese Utility Model Publication No. 63-173476 JP-A-11-336405

  As described above, the latch pawl rotates horizontally against the spring both when it is pulled out and when it is pushed in. However, if the drawer is pushed in strongly, the latch claw will swing back (due to the spring dance phenomenon), the latch claw will return to the disengaged position, and the drawer will return to the wagon body and move back (forward movement). There was a case.

  In addition, a lock may be provided on the drawer. In that case, for some reason, the drawer may be forcibly pulled out by forcibly pulling the handle. Further, due to some vibration or the like, an external force may be applied to advance the drawer while the latch claw is engaged with the engaging portion. In such a case, when the latch claw is engaged with and disengaged from the engaging part only by horizontal rotation, the latch claw tends to escape and rotate from the engaging part by pulling the drawer. For this reason, there is a concern that the wear of the latch claw is promoted and it becomes easy to be detached from the engaging portion.

  Further, since the latch pawl is rotated and the drawer is moved forward by the pulling operation of the pulling hand, the engaging pawl may be rotated while being in contact with the engaging portion. There is also a concern that even when the engaging surface is rubbed against the engaging portion, it gradually wears out, and the catch (engagement) between the latch claw and the engaging portion gradually becomes sweet during use.

  The present invention has been made to improve the current situation.

  The present invention includes a drawer body that is mounted on a furniture body so as to be movable back and forth, and a latch device that holds the drawer body in a state of being housed in the furniture body, and the latch device includes the furniture body. A drawer having a latch claw that engages with and disengages from an engagement portion provided on the handle, a pull that is operated by a person, and an interlocking means that shifts the latch claw to a state in which the latch claw can be detached from the engagement portion in conjunction with the movement of the handle. The latch claw is attached to the support portion so as to engage with the engagement portion by sliding in the left-right direction.

  The present invention also includes the structure of claim 2. According to a second aspect of the present invention, in the first aspect, the interlocking means is a first interlocking member that is moved by the pull handle, and a second interlocking member that is moved by the first interlocking member and that restricts the movement of the latch pawl. And when the second interlocking member pulls the handle, the second interlocking member allows the latch pawl to escape and rotate so as to disengage from the engaging portion. The latch claw is biased by a spring so as to engage with the engaging portion, and when the second interlocking member is changed to the disengaged state, the second interlocking member and Is able to escape and rotate so as to be detached from the engaging portion in an insulated state.

  In the present invention, the latch claw is not engaged with the engaging portion by horizontal rotation, but is engaged with the engaging portion by horizontal sliding. When not pulled, the external force generated by pulling the drawer acts on the latch claw in a direction orthogonal to the direction of engagement with the engaging portion.

  In other words, in the state where the puller is not pulled, the latch claw will not detach from the engaging portion unless it is slid in the left-right direction, but the direction of the external force by the pulling operation of the latch is perpendicular to the direction of the latch claw's escape slide. Therefore, the latch claw only has a bending force and does not wear. As a result, even if an external force is applied to the drawer to move it forward for some reason, the latch claw is engaged with the engaging portion. In addition, even if the engagement surface of the latch claw is worn due to repeated use, the engagement (engagement) with the engagement portion does not become sweet. Therefore, durability and reliability can be improved.

  The latch claw can be configured to slide only to the left and right. In this case, the latch claw and the interlocking means may be associated with each other so that the latch claw is retracted and released from the engaging portion when the handle is pulled. .

  On the other hand, since the second interlocking member and the latching claw are insulated by the pulling operation of the pulling handle and the latching claw is in a state of revolving so as to be disengaged from the engaging portion, the pulling operation is performed. When pulled, the latch claw rotates horizontally against the spring while maintaining the state in which the tip of the claw is in contact with the inner side surface of the furniture body, and is detached from the furniture body. In the invention of claim 2, since the spring force of the spring for urging the latch claw does not act as a resistance to the pulling handle, there is an advantage that the pulling operation of the pulling handle can be easily performed.

(A) is the perspective view of the wagon to which this invention is applied, (B) is the schematic plane sectional view which looked at (A) from the BB view direction. This It is the schematic sectional drawing which looked at Drawing 1 (A) from the II-II viewing direction. (A) is the perspective view which looked at the front part of drawer from the left direction, (B) is the perspective view which looked at the front part of drawer from the right direction. It is a separation perspective view of a drawer. It is a separation perspective view of a drawer. It is a separation perspective view of a drawer. (A) is a separated perspective view of a front plate, a base, and a back plate, and (B) is a partial perspective view of the back plate. It is a vertical side view in the left-right center part of the front part of drawer | drawing-out. (A) is an exploded perspective view of the main part, (B) is a perspective view of a part of the base, and (C) is a partially broken perspective view of the upper puller. (A) is a perspective view of the principal part which abbreviate | omitted a part of member, (B) is the isolation | separation back view of a part of member. It is a figure which mainly shows a 1st interlocking member, (A) is a perspective view in the state assembled in the base, (B) is a perspective view of a single body, (C) is a side view which shows the relationship with a base. It is a figure which shows the attachment structure of a latch nail | claw, (A) is a separate perspective view, (B) (C) is a perspective view in the incorporated state. (A) is a plane sectional view of the portion of the latch claw, and (B) is a plan view mainly showing the relationship between the latch claw and the second interlocking member. It is a principal part perspective view in a free state. It is a separation top view in the middle of making a drawer advance. It is a plane sectional view for showing movement of a latch claw at the time of pushing. It is a perspective view which shows the relationship between an upper handle and a 1st interlocking member. It is a contrast schematic diagram for demonstrating an effect | action.

  Next, an embodiment of the present invention will be described with reference to the drawings. The present embodiment is applied to a wagon drawer as an example of furniture. In the following description, the words “front and rear” and “left and right” are used to specify the direction, and this is based on the state of the wagon as viewed from the front as shown in FIG.

(1) Outline of drawer The wagon of the present embodiment can be placed inside a desk, for example, and has a wagon body 1 that opens forward and a three-stage drawer 2 that is mounted in the interior so as to be movable back and forth. . Of the three drawers 2, the upper one has the smallest height dimension, the lower one has the largest height dimension, and the middle one has an intermediate height dimension between the two. Each drawer 2 is supported by a suspension rail device (not shown) on an inner plate constituting the wagon body 2 so as to be movable back and forth. Needless to say, the wagon and drawer are square when viewed from the front. First, the outline of the drawer 2 will be described mainly with reference to FIGS.

  3 and 4, the drawer 2 includes a storage box 3 having a bottom plate, left and right side plates, and a back plate (not shown), and a front plate (end plate) 4 and a back plate 5 provided at the front end thereof. It has as a main member, and the drawer body is composed of these three members. A rail member 7 is attached to the outer surface of the side plate in the storage box body 3. The storage box 3 and the front plate 4 are made of steel, but the back plate 5 is a resin molded product. Of course, the back plate 4 can be made of steel or the front plate 4 can be made of resin.

  For example, as shown in FIG. 4 and FIG. 7, the front plate 4 is formed in a box shape with a shallow rear opening with wall plates 4a, 4b and 4c provided around the bottom plate (substrate). It is formed in a shallow box shape with a forward opening having wall plates 5a, 5b, 5c around the four sides, and they are fitted together so that they cannot be detached. And between the front board 4 and the back board 5 is a hollow part, The base 8 of the front view square is arrange | positioned in this hollow part.

  The base 8 is formed in a shallow tray shape having walls 8a, 8b, and 8c around the four sides, and is disposed inside the back plate 5 in a state of opening forward. As shown in FIG. 6, left and right side pullers 9 that can be pulled by applying a finger to the base 8 from the left and right side portions of the front plate 4, and a finger can be pulled by applying a finger from the upper portion of the front plate 4. Attach the upper puller 10, the latch claw 11 that engages the wagon body 1, and the first interlocking member 12 and the second interlocking member 13 that make the latch pawl 11 free by pulling the puller 9 or 10. Yes. The latch device is configured with these pulling handles 9 and 10, the latch claw 11 and the interlocking members 12 and 13 as constituent elements. The latch claw 11 is attached to the left side portion of the base 8. Both interlocking members 12 and 13 constitute interlocking means.

  The second interlocking member 13 functions as a stopper that keeps the latch claw 11 engaged with the wagon body 1, and the stopper function of the second interlocking member 13 is released by the movement of the first interlocking member 12. Therefore, the second interlocking member 13 can be called a stopper or a regulating body, and the first interlocking member 12 can be called a relay member (or interlocking member).

(2). Drawer body Next, each part will be described in detail. First, the drawer body will be described. For example, as can be easily understood from FIG. 4, the left and right side walls 5b of the back plate 5 have a stepped portion 5b 'displaced inward, and the front portion of the storage box 3 is located behind the stepped portion 5b. It is fitted from. The storage box 3 is held so as not to be detached from the back plate 5. Therefore, the back plate 5 has a protruding portion 5 d exposed on the left and right outer sides of the storage box 3.

  Further, as clearly shown in FIG. 8, an upright standing piece 5e is provided at the front end of the upper wall 5a of the back plate 5, while the upper portion of the front plate 4 is hollow by providing a hanging piece 4d on the upper wall 4a. The upright piece 5e of the back plate 5 is fitted into the inside thereof. The lower wall 5 c of the back plate 5 is in contact with the back surface of the front plate 4. In the upper wall 5 a of the back plate 5, an escape hole 14 for allowing the upper handle 10 to be attached is opened. The escape holes 14 are arranged on both the left and right sides of the center line, and are left and right horizontally elongated square holes.

  For example, as shown in FIG. 4, the back plate 5 has a protruding portion 5d protruding outward in the left and right sides of the storage box 3, and the side puller 9 is attached and moved on the side wall 5b continuous to the outer end of the protruding portion 5d. In order to allow this, a slit 15 having a forward opening is formed. The slit 15 has a shape that is long in the vertical direction.

  As shown in FIG. 4, a hole 16 is provided in the right protruding portion 5 d and the stepped-down portion 5 b ′ of the back plate 5, and a member 17 for positioning the storage box 3 is mounted in this hole. On the other hand, as shown in FIG. 7, a relief hole 18 communicating with the protruding portion 5 d and the stepped-down portion 5 b ′ is formed on the left side portion of the back plate 5, and the latch claw 11 is exposed from the relief hole 18. I am letting.

  As shown in FIGS. 4 and 7, on the left and right ends of the base 8, there are protruding hooks 19 in the shape of a side view, while the upper and lower walls 5 a of the back plate 5 are protruded. An engagement hole 20 into which the engagement claw 19 is fitted is provided in 5c. Therefore, when the base 8 is pushed into the back plate 5 with a certain amount of force, the engaging claws 19 are fitted into the engaging holes 20 due to bending deformation of the base 8 and the back plate 5. Accordingly, the base 8 is attached to the back plate 5 in one touch.

  As shown in FIG. 1, a lock 21 is provided at the upper end of the upper drawer, and the keyhole is exposed to the front from the front plate 4. The lock 21 has the same structure as that of the prior art, and when the key is rotated, the dead bolt engages with an engagement hole provided in the keratin of the wagon body 1.

(2). Latch Device Next, the latch device will be described with reference to the drawings in FIG. 9 and subsequent drawings in addition to the previous drawings. First, the latch claw 11 will be described mainly with reference to FIGS. As clearly shown in FIG. 12A, the latch claw 11 includes a base 23 extending in the left-right direction in a posture that crosses the left side wall 8b of the base 8, and a plane protruding backward from the left outer end of the base 23. It has an L-shaped claw portion 24 and a stopper portion 25 that protrudes backward from the right inner end portion of the base portion 23. Therefore, the latch claw 11 has a U-shaped configuration with a rearward opening in plan view. It is arranged in such a manner as to straddle the left side wall 8b of the base 8.

  For example, as shown in FIG. 13, a relief hole 9 f into which the base 23 of the latch claw 11 enters is formed in the substrate 9 b of the side puller 9. The engaging surface (front surface) 24a of the claw portion 24 has a posture extending in the left-right direction. On the other hand, the rear surface of the engaging surface 23a is an inclined guide surface 24b that shifts backward as it approaches the base 23 side. Moreover, the stopper part 25 has a dogleg shape in a plan view.

  The latch claw 11 is attached to a holder portion 26 provided integrally with the left side portion of the base 8. The holder portion 26 is an example of a support portion described in the claims, and has a U-shaped sideways in a rear view so as to surround the latch claw 11 from above and below and from the inside. It is connected to a portion protruding outward by a vertically long pin 27. The pin hole of the holder portion 26 is a long hole 28 that is long in the left-right direction. Therefore, the latch claw 11 can slide to the left and right without changing its posture, and can rotate horizontally around the pin 27.

  The claw portion 24 of the latch claw 11 is fitted with a U-shaped holding member 29 from the inside, and a spring (compression coil spring) 30 is provided between the holding member 29 and the left side wall 8 b of the base 8. Is arranged. Therefore, the latch claw 11 is urged to the left outer side by the spring 30. The holding member 29 is made of a resin having a small coefficient of friction and high durability (for example, POM resin or nylon resin), and therefore can also be called a slider. Further, the holding member 29 and the left side wall 8b of the base 8 are provided with spring receiving protrusions that hold the spring 30 so as not to be displaced.

  As shown in FIG. 13, the side surface portion of the wagon body 1 is formed in a hollow shape by fixing a convex reinforcing frame 32 to the side plate 31, and the latch claw 11 with the drawer 2 pushed into the reinforcing frame 32. As an example of the engaging portion with which the claw portion 24 engages, an engagement hole 33 into which the tip portion of the claw portion 24 enters is provided. The latch claw 11 is set so that the stopper portion 25 is in contact with or close to the bottom surface of the base 8 in the engagement posture with the tip of the claw portion 24 fitted in the engagement hole 33. Accordingly, the latch claw 11 can rotate in the clockwise direction in the state shown in FIG. 13 (the direction in which the claw portion 24 is detached from the engagement hole 33 and in the disengagement direction), but in the counterclockwise direction. I can't move. In addition, as an engaging part, it is also possible to employ | adopt the engaging protrusion protruded inside.

  For example, as shown in FIG. 9, a boss-like support shaft 36 is integrally provided on the right side of the holder portion 26 in the bottom surface of the base 8, and the second interlocking member 13 is rotatably attached to the support shaft 36. . That is, the second interlocking member 13 includes a cylindrical portion 13a that fits on the support shaft 36, a substantially horizontal posture stopper portion 13b that extends behind the base portion 23 of the latch claw 11, and a passive portion 13c that extends on the opposite side of the stopper portion 36b. And can rotate around an axis extending in the front-rear direction.

  When the stopper portion 13b is positioned behind the base portion of the latch claw 11, the latch claw 11 is held in an engagement maintaining state incapable of horizontal rotation, while the second interlocking member 13 holds the stopper portion 13b. When in the disengaged state (free posture) moved downward, the latch claw 11 is also in the disengaged state (free state) that can be horizontally rotated so as to be disengaged from the engagement hole 33.

  For example, as shown in FIG. 11, the first interlocking member 12 is a sheet metal processed product and extends long in the left-right direction. As shown in FIG. 8, the base 12a in a substantially vertical posture and a passive standing up from the base 12a. It has the part 12b and the drive part 12c which protruded forward from the lower end of the base 12a. While the passive portion 12b is simply a flat plate state, the drive portion 12c has a U-shaped hollow structure, and the passive portion 13c of the second interlocking member 13 is fitted to the left end portion of the drive portion 12c. Then, as clearly shown in FIG. 11B, the left and right ends of the base portion 12b are narrowed to form the support shaft portion 12d, and the left and right support shaft portions 12d project from the base 8. 37.

  As described above, the cylindrical portion 13a of the second interlocking member 13 is fitted to the support shaft 36 provided on the base 8, but the driving portion 12c of the first interlocking member 12 is the passive portion of the second interlocking member 13. Since it fits in 13c, the 2nd interlocking | linkage member 13 is hold | maintained so that forward removal is impossible. Therefore, the second interlocking member 13 does not require a retaining means such as a screw.

  The first bearing 37 has a circular bearing hole and a forward opening groove 37a having a width slightly larger than the plate thickness of the first interlocking member 12. As shown in FIG. When the support shaft portion 11d is fitted to the first bearing 37 with the posture of the base 12c toward the bottom surface of the base 8, and then the base portion 12a is rotated so as to be in the vertical posture, the support shaft portion 12d is rotated by the first bearing 37. It is held movable and unremovable. Since the support shaft portion 12d is narrow, the first interlocking member 12 is held by the left and right first bearings 37 so as not to be laterally displaced.

  For example, as shown in FIG. 9A, the upper handle 10 has a finger hooking portion 10a and a pair of left and right foot portions 10b protruding downward from the finger hooking portion 10a. This portion is rotatably connected to a pair of left and right second bearings 38, 39 provided on the base 8. And the lower end of the foot part 10b protrudes from or is close to the passive part 12b of the first interlocking member 12.

  A hollow portion 40 having a square cross section is formed at a midway height portion of the foot portion 10 b of the upper puller 10, and a flanged support shaft 41 is fitted into the hollow portion 40. The support shaft 41 has a rotating shaft that protrudes to the outside of the hollow portion 40, and the rotating shaft is fitted to the inner and outer second bearings 38 and 39. In this case, the tip of the support shaft 41 has a hemispherical shape, while the inner second bearing 38 has a bearing hole that opens upward and has a constricted opening. 39 has a circular bearing hole which is not cut.

  The support shafts 41 provided on the left and right foot portions of the upper puller 10 are fitted and mounted on the second bearings 38 and 39 by pushing from above, whereby the upper puller 10 is rotated around the axis of the support shaft 41 that is long in the left-right direction. It can be rotated back and forth. In this case, positioning (leading) is facilitated by opening the inner second bearing 38 upward. Further, as clearly shown in FIG. 10B, the upper end of the outer second bearing 39 is formed as an inclined surface 39a that is lowered inward in a rear view, and the tip of the support shaft 41 is formed in a hemispherical shape. , The fitting of the support shaft 41 is ensured (the support shaft 41 is fitted when the second bearing 39 is once bent and deformed and returned). The support shaft 41 is made of a resin having a small friction coefficient and excellent durability.

  As clearly shown in FIG. 8, the finger hooking portion 10a of the upper handle 10 is located on the back side of the hanging piece 4d of the upper wall 4a of the front plate 4 (that is, located on the back side of the upper portion of the front plate 4). Yes.) Therefore, as shown in FIG. 2, there is a space between the front plates 4 of the drawers 2 adjacent to each other so that a person can insert a fingertip. Further, as shown in FIG. 8, a stopper 10 c that contacts the upper wall 5 a of the back plate 5 and restricts the rotation angle is provided on the finger hooking portion 10 a of the upper handle 10.

  For example, as shown in FIG. 9 (A), the side puller 9 has a vertically long finger-hanging portion 9a and a substrate 9b extending inward in the left-right direction from the finger-hanging portion 9a. While being rotatably attached to a pair of upper and lower third bearings 43 provided on the base 8, as shown in FIG. 12A, the end of the substrate 9b is connected to the passive portion 12b of the first interlocking member 12. Abutting or approaching from the front. Therefore, when a fingertip is pulled on the finger hooking portion 9a of the side puller 9, the passive portion 12b of the first interlocking member 12 is pushed backward at the inner end portion of the substrate 9b, whereby the first interlocking member 12 is supported by the support portion 12d. Then, as described above, the second interlocking member 13 shifts to a free posture in which the stopper portion 13b is moved downward.

  As shown in FIG. 9, a pair of upper and lower support shafts 45 are attached to the left and right middle portions of the substrate 9 b in the side puller 9 through the hollow portion 44 in the same manner as the upper puller 10. The upper and lower paired third bearings 46 are fitted. The third bearing 46 is in the form of a circular hole. For example, as clearly shown in FIG. 12C, the front ends of the opposed surfaces of the third bearing 46 are inclined surfaces 46a. For this reason, the support shaft 45 can be fitted smoothly.

  As clearly shown in FIG. 13, the finger hooking portion 9 a of the side puller 9 is provided with a rearward protruding portion 9 c that hits the side wall 5 b of the back plate 5. For this reason, a person can obtain a soft touch. Further, a stopper piece 9 d that contacts the inner surface of the side wall 5 b of the back plate 5 is provided at the base of the substrate 9 b of the side puller 9. For this reason, the side puller 9 is held in a non-reversible manner.

  As can be understood from FIG. 8, the driving unit 12 c having a large weight of the first interlocking member 12 is disposed so as to be shifted forward from the rotation axis O, and the passive unit 12 b is also disposed on the rotation axis O. It is shifted to the near side. For this reason, the first interlocking member 12 is urged by its own weight so as to rotate the drive unit 12 c downward, and the rotation by its own weight is restricted by the pullers 9 and 10. Therefore, the rotation operation of the first interlocking member 12 by the pullers 9 and 10 is performed against the weight of the first interlocking member 12, and when the person releases the finger from the pullers 9 and 10, the first interlocking member 12 is operated. And each handle 9 and 10 returns to an original position (engagement state holding attitude). Therefore, although a spring for returning the pullers 9 and 10 and the interlocking members 12 and 13 to their original postures is unnecessary, as shown by a one-dot chain line in FIG. 14, a torsion coil spring is provided on the cylindrical portion 13 a of the second interlocking member 13. It is also possible to insert 47.

(3) Operation / Summary When the drawer 2 is pushed into the wagon body 1 and the pullers 9 and 10 are not pulled, as described above, the second interlocking member 13 is in the engagement maintaining state, and its stopper Since the portion 13b is located behind the base 23 of the latch claw 11, the latch claw 11 is held so as not to rotate. On the other hand, when a person puts his / her finger on the finger-holding portions 9a, 10a of any of the pulling handles 9, 10 and pulls it forward, the movement of the pulling handles 9, 10 causes the first interlocking member 12 and the second interlocking member 13 to be in a free posture. Then, the latch claw 11 enters a free state in which the claw portion 24 can be detached from the engagement hole 33 of the wagon body 1, and therefore, the latch claw 11 escapes and rotates as shown in FIG. The forward movement of the drawer 2 is allowed.

  That is, when the pulling hands 9 and 10 are pulled, the latch claw 11 does not rotate to the free posture, but the latch claw 11 is released from the restriction by the second interlocking member 13 and shifts to a free state in which the latch claw 11 can be rotated. Therefore, the latch claw 11 moves forward while rotating horizontally with the tip of the claw portion 24 being in contact with the inner surface of the wagon body 1 and is released from the wagon body 1 to the original posture by the spring 30 at the same time. Return.

  When the drawer is pushed in, the inclined surface 24b of the claw portion 24 of the latch claw 11 hits the front end surface of the wagon body 1 as shown in FIG. Then, the latch claw 11 moves backward along the long hole 28. That is, it slides inward without changing the posture in plan view. When the drawer 2 is fully pushed in, the latch claw 11 is moved forward by the spring 30 so that the tip of the claw portion 24 fits into the engagement hole 30. In a state where the pullers 9 and 10 are not pulled, the latch claw 11 is held so as not to rotate, and is not engaged with or disengaged from the engagement hole 33 unless it slides left and right.

  FIG. 18A is a schematic view showing the rotating latch claw 50. When the drawer 2 is pushed in strongly as if it is pushed out, the latch claw 50 swings due to the impact of the drawer colliding with the wagon body 1. FIG. Thus, the drawer 2 may return. That is, when the drawer 2 is pushed in, the claw portion 50a of the latch claw 50 is engaged with the engagement hole 33 of the wagon 1 by the spring 30. Since the inertial force is generated, the drawer 2 vibrates left and right in response to an impact, so that the latch claw 50 is fitted into the engagement hole 33 and then returned and rotated by collision / repulsion. Then, the return rotation of the latch claw 50 and the forward movement due to the reaction caused by the collision of the drawer 2 are synchronized, so that the drawer 2 moves forward.

  On the other hand, in the present embodiment schematically shown in FIG. 18 (B), in the state where the drawer 2 is pushed in and the pulls 9 and 10 are not pulled, the latch claw 11 engages with the engagement hole as long as it does not slide back and forth. Although it does not detach from 33, even if the drawer 2 vibrates in the left-right direction due to an impact caused by pushing, the latch claw 50 does not generate a large inertial force that swings in the left-right direction, and is engaged with the engagement hole 33. Is retained. Therefore, it is possible to prevent or significantly suppress the phenomenon in which the drawer 2 moves forward due to the spring when the drawer 2 is pushed in so as to push it away.

  Further, the pulling handle is forcibly pulled in the locked state, or the vibration in the front-rear direction is applied to the wagon, so that the latch claw is engaged with the engaging hole 33 and tries to advance it to the drawer 2. External force may act. In this case, when the latch claw 50 is engaged and disengaged from the engagement hole 33 only by horizontal rotation, the latch claw 50 tends to escape and rotate from the engagement hole 33 by pulling the drawer 2. For this reason, when an external force forcibly moving forward on the drawer 2 repeatedly acts, the latch claw 50 may be gradually worn out and the latch claw 50 may be easily detached from the engagement hole 33.

  On the other hand, in the present embodiment, in a state where the pullers 9 and 10 are not pulled, the latch claw 11 does not detach from the engagement hole 33 unless the latch claw 11 is slid to the left and right to move backward, and the drawer 2 is moved forward. Since the force to act only acts as a bending force on the latch claw 11, the latch claw 11 is not worn. For this reason, it is possible to prevent or remarkably suppress a problem that the latch claw 11 is worn and detached from the engagement hole 33.

  Further, conventionally, since the latch pawl 50 is rotated and the drawer 2 is moved forward by one action of pulling the handle, the latch 50 is rotated while the engaging surface 50b is in contact with the front surface of the engaging hole 33. For this reason, there is a possibility that the engagement surface 50b is gradually worn out and may become sweet due to being caught (engaged) with the engagement hole 33. However, in this embodiment, the pullers 9 and 10 are not pulled. Then, since the latch claw 11 does not detach from the engagement hole 33 unless it slides and retreats, even if wear occurs on the engagement surface 24a of the latch claw 11 during use, The state in which the engagement hole 33 is firmly fitted (engaged) is maintained.

(4). Others This embodiment can be embodied in various ways other than the above-described embodiment. For example, the application target is not limited to a wagon, but can be applied to drawers of various furniture such as cabinets and desks. The shape of the handle, interlocking means (interlocking member), and latch claw can be variously embodied. For example, the present invention can also be applied to a structure in which a pull hole is formed in the front plate and a pull handle is arranged at the pull hole portion. The guide means for enabling the latch pawl to be kicked may be provided only on the furniture body or on both the furniture body of the latch pawl.

  The present invention can actually be embodied on a desk. Therefore, it can be used industrially.

1 Wagon body (furniture body)
2 Drawer 9 Side puller 10 Upper puller 11 Latch claw 12 First interlocking member constituting interlocking means 13 Second interlocking member (stopper) constituting interlocking means
DESCRIPTION OF SYMBOLS 23 Base part of latch claw 24 Claw part of latch claw 24a Engagement surface 24b Inclined guide surface 25 Stopper part of latch claw 26 Holder part as an example of support part 30 Spring 32 Reinforcing plate which comprises the inner surface of a wagon body 33 Engagement Engagement hole as an example

Claims (2)

A drawer body that is mounted on the furniture body so as to be movable back and forth; and a latch device that holds the drawer body in a state of being housed in the furniture body, the latch device being provided on the furniture body. A latch claw that engages with and disengages from the joint, a pull operated by a person, and interlocking means that shifts the latch claw to a state in which the latch claw can be detached from the engaging unit in conjunction with the movement of the pull;
The latch claw is attached to the support portion so as to engage with the engagement portion by sliding in the left-right direction.
drawer. The interlocking means includes a first interlocking member that is moved by the pulling hand, and a second interlocking member that is moved by the first interlocking member and restricts the movement of the latch claw, and the second interlocking member includes: When the puller is pulled, the interlocking member changes its posture to the disengaged state that allows the latch pawl to escape and rotate so as to be detached from the engaging portion,
The latch pawl is biased by a spring to engage with the engaging portion, and when the second interlocking member changes its position to the disengaged state, the latch pawl is insulated from the second interlocking member. It can escape and rotate so as to separate from the engaging portion,
A drawer according to claim 1.

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