JP4931663B2 - furniture - Google Patents

Description

  The present invention relates to furniture having a drawer.

There are furniture such as wagons and cabinets that urge the drawer in the stowed state in a direction that is always pushed out by the force of a spring. For example, it is illustrated in the following Patent Documents 1 and 2. In particular, in such a type of furniture, in order to prevent the housed drawer from popping out, it is necessary to lock a latch member that can be released by a pulling operation to a latch hook provided on the housing side. Moreover, it is normal to provide a locking device in a wagon or a cabinet. As a locking mechanism, it is general to provide a locking member on the housing side for locking to a convex portion protruding from the drawer side surface.
JP 2002-174066 A Japanese Patent No. 3827943

In the above-described type of wagon or cabinet, the handle itself can be operated even when locked using a locking device, and the latch member is disengaged when operated. However, it is general that there is some gap between the convex part of the drawer side surface part in the housed state and the locking member, and when the engagement of the latch member with the latch hook is released The stowed drawer is pushed out by the gap between the convex portion and the locking member by a spring force. Then, even if the pulling operation is stopped, the latch member may not be able to return to the original state where it is engaged with the latch hook. In this case, when unlocking is performed, the drawer suddenly pops out even though the pulling operation is not performed. Furthermore, although a key bar is used for the locking mechanism, since the key bar is elongated, bending is likely to occur when receiving a force in a direction crossing the longitudinal direction due to locking, and this can be prevented inexpensively and easily. Is also required.
Accordingly, an object of the present invention is to provide furniture having a structure in which a pulling operation cannot be performed in a locked state in furniture having a drawer of the above type. Further, the present invention provides furniture having a structure in which multistage drawers are aligned in the vertical direction with high accuracy.

In the first invention, the drawer housed in the housing is freely removable, and the drawer in the housed state is pushed out by the biasing force of the first elastic member acting between the housing and the housing. Force is applied, provided on the front part of the drawer, has a push-type pull that moves backward when pressed with a finger, and returns to the original state by the biasing force of the second elastic member when released. The latch member interlocking with the forward / backward movement of the pulling handle is detachable from a latch hook fixed to the casing, and a key bar that forms a part of the locking device is extended in the vertical direction in the casing. the locking member in the key bar height position corresponding to the member is mounted integrally rotatably with said key rod, locking member directly to the latch member engaged with the latch Kakegu by locking operation with locking, the engagement between the latch member by unlocking operation is released, locking Misao Accordingly, while resisting the urging force of the third elastic member that constantly urges the locking member in a direction to open the locking of the latch member, said key bar is rotated around its axis, said A furniture characterized by comprising a key bar receiver integrally formed with the latch hook and extending between the key bar at a height position where the locking member is mounted and the inner wall surface of the housing. provide.
In this 1st invention, the locking block part of a locking device may be provided in the housing | casing, and may be provided in the drawer. Also, the drawer may be only one stage.

  In the second invention, the drawer of the first invention is a multi-stage furniture, and the locking block portion of the locking device is provided on the front surface of the specific drawer, and the third operation is performed by the locking operation. Actuate to lock the locking member to the latch member engaged with the latch hook by rotating in one of the left and right directions while rotating against the urging force of the elastic member. Left and right inner surfaces of the housing facing the left side or the right side of the front portion of each drawer, and the side of the front portion of the drawer on the inner surface side of the one direction side It is constituted so as to provide elastic side parts for energizing.

  In the third aspect of the present invention, the elastic side component is completely opposed to the elastic side component on the side opposite to the side on which the elastic side component is provided in the left and right inner surfaces of the housing of the second aspect. Constant thickness side parts having the same thickness T as the thickness when pressed against the left and right sides of the left and right side surfaces of the front of each drawer and the left and right inner surfaces of the housing facing each other are the same value If the gap dimension when the two parts are distributed is Δ, both types of side parts are configured to have a thickness T close to the gap dimension Δ so that 0.85 · Δ ≦ T <Δ. . Preferably, 0.9 · Δ ≦ T <Δ.

  In the first invention, since the locking member is locked to the latch member engaged with the latch hook by the locking operation, after locking, the engagement of the latch member cannot be released even if the handle is operated, Problems such as those described above can be prevented. In addition, since the locking member is mounted at a height position corresponding to the latch member of the key bar so as to be integrally rotatable, when locked, a lateral force (bending force) is applied to the key bar via the locking member. However, since the key bar is provided with a key bar holder that extends between the height position where the locking member is mounted and the inner wall surface of the housing, the key bar is unlikely to be bent. Can be locked with high reliability. Furthermore, since the key bar receiver is formed integrally with the latch hook, the effect of reinforcing the key bar is increased and the number of parts is reduced.

  In the second invention, the locking block portion of the locking device is provided on the front surface portion of the specific drawer, and the left and right moving material is resisted against the urging force of the third elastic member by the locking operation in either the left or right direction. In order to lock the locking member to the latch member engaged with the latch hook, the specific drawer is biased in the direction opposite to the one direction. For this reason, the side line of the front part of the drawer does not align with other drawers that do not receive the urging force. In order to prevent this, an elastic side part is provided on the inner surface side of the casing facing the front surface of the other drawer, and on the inner surface side of the casing in the one direction. Furthermore, in the unlocked state, the specific drawer does not receive the urging force of the third elastic member, and a flexible side part is attached to the inner surface of the casing on the one direction side of the specific drawer. If not, the specific drawer may be biased toward the one direction. In order to prevent this, the same elastic side parts as those corresponding to the other drawers are mounted on the inner surface of the casing in the one direction facing the side surface of the front surface of the specific drawer.

  In the third invention, not only the side lines of the front surface of the drawer are aligned as in the second invention, but also the gap between the left and right of each drawer and the casing collar can be set as much as possible. It becomes. That is, the elastic side part and the constant-thickness side part under a predetermined pressing condition have the same thickness, and this thickness T is about 90% (85%) of the set gap Δ between the left and right of each drawer and the casing collar. By setting it to less than 100%, the difference between the left and right actual gaps can be reduced (can be set to almost the same value).

  FIG. 1 is a front view of a wagon type three-stage cabinet as an example of furniture according to the present invention. Each of the drawers 20, 40, 60 has a structure in which a biasing force that always pushes forward in the stored state acts. As a specific example, FIG. 2 schematically shows an urging mechanism attached to the rear portion of the uppermost drawer 20, but the same applies to other drawers. An advancing / retreating rod 72 is penetrated in the front-rear direction with respect to the case 70 fixed to the outer side or the inner side of the rear side of the drawer. A coil spring 76 is disposed between the flange 73 fixed to the advance / retreat rod and the case end surface. A rubber end member 74 is provided at the rear end portion of the advance / retreat rod 72, and when the drawer 20 is stored, the member 74 abuts against and presses the inner surface of the rear portion of the housing 10, so that the advance / retreat rod is provided. 72 moves in the direction of the arrow (forward direction), and the coil spring 76 is compressed. A force for pushing out the drawer 20 is applied by this biasing force. The same applies to the other drawers.

  4 is a perspective view of a latch part engaging / disengaging mechanism (latch mechanism) by a pull handle, and FIG. 6 is an enlarged cross-sectional view taken along line FF in FIG. 1 and is partially simplified. Each drawer is provided with a handle 24 for engaging and disengaging the latch component 34 shown in FIGS. 4 and 6 with the latch hook 36. In this embodiment, a push-type handle is employed. A longitudinal sectional view of the front portion of the drawer 20 is shown in FIG. An opening 22K is provided at an appropriate position on the front plate of the front portion 22, and a puller 24 fitted in the opening is pushed with a finger. Then, as shown in FIG. 3, the handle 24 rotates and tilts backward against the urging force of a spring member 31 such as a coil spring that supports the hinge shaft 26 from the rear as a pivot. An interposition member 28 is interposed between the spring member 31 and the handle. A horizontal shaft 30 to which the interposition member is fixedly mounted is rotatably supported around the central axis 30J in a horizontal state below the interposition member. Accordingly, by pushing the puller 24, the horizontal shaft 30 rotates in the direction of the arrow, and the end 30E of the horizontal shaft that is bent in an L-shape substantially downward is centered on the central axis 30J. Rotate in the direction.

  Referring to FIG. 4, a vertical shaft 32 that is rotatably supported around the central axis 32 </ b> J is interposed between the horizontal shaft 30 and the latch component 34. It is fixed to. A lower end portion of the vertical axis is formed at a shaft end portion 32E that is bent in an L shape in the horizontal direction. Accordingly, the rotation of the shaft end portion 30E around the central axis 30J causes the shaft end portion 32E to rotate about the center axis 32J in the direction of the arrow. As a result, the latch component 34 rotates in the direction of the arrow, and the engagement with the latch hook 36 is released. In addition, an urging force in a direction that is always engaged with the latch hook (the direction opposite to the arrow of the latch part in FIG. 4) acts on the vertical axis or the latch part by a spring member (not shown). is doing.

  FIG. 5 is an enlarged front view near the locking block portion 12 of the locking device. The locking block portion 12 is provided in the uppermost drawer 20 in this example, but may be provided in other drawers 40 and 60. Good. A pin shaft portion 14 that rotates around the center of the locking block by a key locking or unlocking operation is provided at the rear portion of the locking block portion 12. Further, a left / right moving plate member 16 as a left / right moving member having a recess 16K with which the pin shaft portion engages is disposed so as to be movable only in the left / right direction. The arrow shown in FIG. 5 is the direction at the time of the locking operation, and when the key is locked, the pin shaft portion 14 rotates in the direction of the arrow (clockwise direction) while pushing the left and right moving plate member 16 to the right. The movement result position is indicated by 14 '. That is, the left / right moving plate member moves to the right by that amount.

  Referring to FIG. 6, a key bar 40 that is rotatable about a central axis 40 </ b> J and extends in the vertical direction is disposed inside the housing 10 and between the drawer side plates. . A lever 42 is provided so as to rotate together with the key bar, and the end of the lever is located near the end (right side in FIG. 6) of the left and right movable plate member 16 in the unlocked state. Further, as a locking member, an L-shaped key plate 44 having the shape shown in FIG. 6 is fixed to the key bar so as to rotate together with the key bar.

  When the left / right moving plate member 16 is driven rightward in FIG. 6 by a locking operation, the end of the lever 42 is moved rightward against the urging force of the coil spring 18. That is, the lever 42 rotates around the central axis 40J. Therefore, the key bar 40 rotates and the key plate 44 rotates together with the key bar 40. When locking is performed, the key plate 44 comes to a position indicated by a two-dot chain line 44 '. The key plate at this position is locked in a state where the left side in FIG. 6 of the latch part 34 engaged with the latch hook 36 is pressed. Thereby, in the locked state, the latch component 34 does not come off from the latch hook 36 even if the handle 24 is pushed. Therefore, in the case of a structure in which the lock of the key plate is not locked to the latch part but to the convex portion of the drawer side portion, the gap that may exist between the convex portion and the key plate is shown in FIG. Although the drawer is pushed forward by the action of the urging mechanism, there may occur a situation in which the latch component cannot return to the engagement state with the latch hook, but this structure can prevent this.

  If the unlocking operation is performed, the left and right moving plate member 16 moves to the left, so that the key plate 44 returns to the open position indicated by the solid line in FIG. The key bar 40 extends to the side surfaces of the second-stage drawer 40 and the third-stage drawer 60, and the same key plate 44 is provided on the key bar at the height of the latch part 34 provided in each drawer. It is fixed.

  The force by the left and right moving plate member at the time of locking, the force received when the key plate 44 is locked to the latch component 34, or the force to operate the handle 24 (incorrectly) in this locked state (locked state) The key bar 40 receives a force that causes a bending action due to a force such as the above. Therefore, in order to prevent the bending (deflection) of the key bar, the key bar receivers 37 are respectively arranged so as to surround the key bars at the fixing positions (the height positions of the latch parts) of the respective key plates corresponding to the respective drawers. Has been established. The key bar receiver 37 is integrally formed with the latch hook 36 as a resin injection molded product. In the plan view schematic shape of the integrated part 38, the latch hook 36 has a substantially triangular shape, and the key bar receiver 37 has a substantially rectangular shape. Since the mounting method is related to the front structure of the housing 10, the housing front structure will be described first.

  The front structure of the housing 10 in this example has a first bent portion 10A in which the side plate of the housing is bent inward at the front end as shown in a plan view in FIG. The first bent portion is bent inward in the left-right direction (leftward in FIG. 6) to have a second bent portion 10B, and the second bent portion is parallel to the housing side plate toward the rear. A fourth bent portion with a narrow width (length in the bending direction), which is further bent to the outside of the side plate of the housing. 10D. This casing side plate is not integrated with a reinforcing frame member or the like which is a separate part by welding or the like at least in the front part. Therefore, in order to hold and fix the integrated part 38 to the housing 10, the bent portions are used.

  A through hole having an appropriate position and size is formed in the third bent portion 10C, and an engagement convex portion 36K provided on the surface of the latch hook 36 facing the housing side plate is inserted therein. Stop. On the other hand, the front side portion of the key rod holder 37 is inserted into the gap between the end surface of the fourth bent portion 10D and the housing side plate to fill the gap, and the surface on the housing side plate side of the key rod receptacle 37 is the inner surface of the housing side plate. It is in contact. As a result, the integral part 38 is fixed to the housing 10 and the bending of the key bar 40 is prevented. Therefore, the lock to the latch component by the key plate 44 can be performed with high reliability. Further, since the latch hook 36 and the key bar receiver 37 are integrated, the number of parts is reduced, which contributes to cost reduction.

  As can be seen from the description of FIG. 6 above, the width of the ridge of the housing 10 is a thickness dimension that combines the side plate of the housing and the first bent portion 10A that is the folded portion. It is as thin as 5 mm. Therefore, it is practically impossible to provide the locking block portion 12 of the locking device on the collar portion. For this reason, although provided in the uppermost drawer 20 in this example, the locking block portion may be provided in the collar portion with respect to the first invention. In addition, the gap formed by this basket and the left and right side surfaces (22A, etc.) of the front face of the drawer is set to Δ = 1.5 mm, where Δ is the set gap when the left and right gaps are distributed to the same value. . I would like the three drawers to be aligned in the vertical direction, that is, the side lines of the front face of the drawer are aligned as much as possible. Also, I want to make the gap between the left and right real as close as possible. Therefore, in this embodiment, the elastic side part 50 shown in FIG. 7 is attached to the inner side surface of the right side hook corresponding to each drawer, and the constant thickness (not shown) is attached to the inner side surface of the left side hook. Install the side parts.

  As described above, the elastic side part is provided on the right side in this example because the aforementioned left and right moving plate member 16 is driven rightward during locking. That is, since it is driven against the urging force of the coil spring 18, the drawer 20 is pushed leftward as a reaction force through the left and right moving plate member 16. However, the other drawers 40 and 60 are not provided with the locking block portion 12 and the left and right moving plate member 16, and thus do not receive such reaction force. For this reason, only the uppermost drawer 20 is displaced to the left, and the side lines of the front face of the drawer are not aligned. In order to prevent this, it is desirable that the second and third stage drawers are also urged to the left. For this reason, elastic side parts are provided on the inner surface of the casing facing the right side surface of the front surface of each of the second and third stage drawers, that is, the inner side surface of the flange (the surface on the drawer side of the first bent portion 10A). 50 is put on. Each drawer is urged to the left by this elastic side part.

  However, in the unlocked state, the leftward biasing force by the coil spring 18 does not act on the drawer 20. For this reason, in the structure in which the urging force in the left direction is applied only to the other drawers 40 and 60, the side lines of the front part of the drawer are not aligned. Therefore, the inner surface of the housing facing the right side surface 22 </ b> A of the front surface portion 22 of the drawer 20 with the same elastic side part 50 having the same action as that of the other drawers 40 and 60 also on the drawer 20 provided with the locking block portion. Provided.

  This always aligns the side lines on the front of the drawer. However, with this alone, the sizes of the left and right gaps of the drawer differ, and the right gap becomes larger. Therefore, the constant-thickness side part is attached to the inner side surface of the left side collar corresponding to the elastic side part. Hereinafter, these side parts will be described with reference to FIG. These two types of side parts are premised on rubbing while the side surfaces of the front face of the drawer are in contact with each other, and are made of resin from the viewpoint of preventing damage to the drawer.

  As shown in FIG. 7A, the plan view has a rectangular shape, and the right side portion 58 of the central standing wall 52 is a slit-like penetration provided in the second bent portion 10B as shown in FIG. This is the part that is inserted inside through the hole 10BK. The claw part 60 which is the center part in the width direction and is elastic in the thickness direction prevents the through hole 10BK from coming off forward. The second bent portion 10B is sandwiched between the front end surface of the claw portion and the standing wall portion 52, and the rear end edge portion (the right end edge portion in FIG. 7) of the right side portion 58 is formed on the inner wall surface of the casing. They are in contact with each other and function to mount and fix the component 50.

  On the left side of the component 50 in FIG. 7, a claw portion that is elastic in the thickness direction at the center in the width direction, and a constant thickness portion 54 are formed at a position sandwiching the claw portion. Further, both the constant thickness part and the claw part are formed in an inclined shape in which the front part (the left part in FIG. 7) 54T, 56T gradually increases from the front end to the rear. The plate thickness T of the constant thickness portion 54 is 1.4 mm in this example, and the height TM to the upper surface of the claw portion 56 in a state where no force is applied is 2 mm in this example. If the claw portion 56 is pressed with a predetermined force or more against the elasticity, the thickness of the part 50 as the left side in FIG.

  A constant-thickness side part (not shown) is a part without the claw portion 56 (and 56T) of FIG. 7B. In FIG. 7A, there is no U-shaped cut through hole that defines the claw portion 56. The region corresponding to the claw portion is made the same as the constant thickness portion 54. Therefore, the thickness is the same as the plate thickness T. The right side of the constant thickness side part is the same as that of FIG. Therefore, the drawers 20, 40, 60 are normally urged to the left and are in contact with the constant thickness side parts. That is, the gap on the left side of the drawer with the casing is the thickness T of the constant thickness side part T = 1.4 mm. On the other hand, the right gap is 1.5 mm × 2−1.4 mm = 1.6 mm because the left and right set gap Δ is 1.5 mm as described above. Both types of side parts have a thickness T close to the set gap Δ so that the relationship of 0.85 · Δ ≦ T <Δ is established, and at least a gap corresponding to the thickness T can be secured. The gap is close. Therefore, the difference between the left and right gaps is reduced.

The elastic side parts are not limited to the form shown in FIG. 7, and various structures for elastically changing the thickness dimension in the plate thickness direction are conceivable. For example, in the left side portion of the standing wall portion 52 in FIG. Good.
In the mechanism shown in FIG. 6, the left / right moving plate member 16 is driven rightward when locked, but a latch mechanism, a key bar or a key plate is provided on the left side of the furniture, and the left / right moving plate member is moved to the left. A structure that is driven in the direction may be employed. In this case, the elastic side part is mounted on the left side, and the constant thickness side part is mounted on the right side. The furniture may be an installed cabinet or the like instead of a wagon.

  The present invention can be used for furniture such as a wagon or cabinet having a drawer.

FIG. 1 is a front view of a wagon type three-stage cabinet as an example of furniture according to the present invention. FIG. 2 is a schematic plan view of an urging mechanism attached to the rear part of the drawer. FIG. 3 is a longitudinal sectional view of the front part of the drawer. FIG. 4 is a perspective view of a main part of the latch mechanism. FIG. 5 is an enlarged front view near the locking block portion of the locking device. 6 is an enlarged cross-sectional view taken along line FF in FIG. FIG. 7 is a diagram of a resilient side part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Housing | casing 12 Locking block part 16 Right-and-left moving plate member 20,40,60 Drawer 24 Push-type handle 34 Latch part 36 Latch hook 37 Key bar holder 40 Key bar 44 Key board 50 Elastic side part

Claims (3)

Furniture with a drawer that can be put in and out freely,
The drawer (20, 40, 60) in the housed state has a force that pushes out the drawer by the urging force of the first elastic member (76) acting between the casing (10),
There is a push type puller (24) provided on the front face (22) of the drawer, which moves backward when pressed with a finger and returns to the original state by the urging force of the second elastic member (31) when released. The latch member (34) interlocking with the forward and backward movement of the pulling handle can be engaged with and disengaged from the latch hook (36) fixed to the housing.
A key bar (40) forming a part of the locking device is extended in the vertical direction in the housing,
A locking member (44) is attached to a key bar at a height corresponding to the latch member so as to be rotatable integrally with the key bar, and the locking member is engaged with the latch hook by a locking operation. The latch member is directly locked and unlocked by the unlocking operation.
While the locking member resists the urging force of the third elastic member (18), which always urges the locking member in the direction to release the locking with the latch member, the key bar has its axis ( 40J) rotating around,
A key bar receiver (37) is provided which extends between the key bar at a height position where the locking member is mounted and the inner wall surface of the housing, and is formed integrally with the latch hook. And furniture. It is furniture with drawers arranged in multiple stages,
The locking block portion (12) of the locking device is provided on the front surface portion (22) of the specific drawer (20), and the left and right sides of the locking device resists the urging force of the third elastic member (18) by the locking operation. The left and right actuate to move in one direction, rotate the key rod (40), and lock the latch member (44) to the latch member (34) engaged with the latch hook (36). Having a moving material (16),
The left and right inner surfaces of the casing facing the left side or the right side (22A) of the front surface of each drawer, and the side surface of the front of the drawer is biased to the inner surface of the casing in the one direction. The furniture according to claim 1, further comprising a resilient side part (50).   On the opposite side of the left and right inner surfaces of the housing from the side where the elastic side parts are provided, the thickness is the same as the thickness when the elastic side parts are completely pressed against the elasticity. A constant-thickness side part having T is provided, and when the left and right gaps between the left and right side surfaces of the front surface of each drawer and the left and right inner surfaces of the housing facing the left and right side surfaces are assigned to the same value, Then, both types of side parts have the thickness T close | similar to the said clearance dimension (DELTA) so that it may become a relationship of 0.85 * (DELTA) <= T <(DELTA).

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