JPH1175945A - Vertically moving metal fitting of top plate for wagon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the top plate of a wagon main body vertically movable in the vertical direction by a simple mechanism having safety, and improve the workability, and reduce the cost. SOLUTION: This vertically moving metal fitting 10 of a top plate for wagon is constituted of a guide member 50 which is fixed in the vertical direction along the internal wall 251 of a side plate of a wagon main body 20, a vertically moving member 60 to the upper end of which a top plate 30 is attached in the horizontal direction, and which vertically moves in the vertical direction along the guide member 50, and a latch mechanism having a fastening member 70 which fastens the vertically moving member 60 at an optional location of the guide member 50. The vertically moving member 60 is fastened when a locking piece is urged to a locking hole of the guide member 50, and is prevented from slipping off from the upper end of the guide member 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wagon top-and-bottom metal fitting suitable for a wagon to be used by being arranged beside a learning desk, a kitchen or the like.

[0002]

2. Description of the Related Art In recent years, learning desks and the like adopt a configuration in which a drawer is formed as a wagon with a separate body from the desk body. Such a wagon is normally stored in the space below the top of the desk body, and is pulled out from the space below the top of the desk body via a caster or the like during desk work, and the wagon top is removed together with the top of the desk body. Can be used as work surface.

[0003] However, the top plate of such a wagon is at a lower height than the top plate of the desk body for storage,
It is difficult to perform comfortable work, for example, a large step is generated between the top plate of the desk body and the top plate of the wagon, and it is necessary to take a forward bent posture.

In order to avoid such inconveniences, wagons have been developed which allow the top plate to be raised and lowered to the same height as the top plate of the desk body. For example, as shown in FIG.
Numeral 0 includes a top plate 91 that can be moved up and down, an upper plate 92, and a link mechanism 93 that moves the top plate 91 up and down on the upper plate 92. At the time of use, the top plate 91 is always lowered and stored under the desk body (not shown), while the work is raised to the same height as the top plate of the desk body by the link mechanism 93 at the time of work, and is widened together with the top plate of the desk body. A flat work surface can be formed.

[0005]

By the way, when the top plate is moved up and down by the conventional wagon 90, the height of the top plate 91 is adjusted by the link mechanism 93 so that the top plate 91 is moved to the lower limit position and the upper limit position. However, there is a problem that it is difficult to adjust the height of the wagon (for example, a kitchen wagon or the like) that can be adjusted freely.

Since a link mechanism 93 is interposed between the top plate 91 and the top plate 92 which have been raised, the space formed between the top plate 92 and the top plate 91 must be used. There was a problem that it became difficult. Further, in the link mechanism 93 as shown in FIG. 14, the top plate 91 rises in a circular arc, and the position of the top plate 91 at the time of ascending shifts more horizontally than at the time of descent. In addition, there is a problem that the load on the top plate 91 is limited due to the unstable state.

Further, when the link mechanism 93 is employed, a stopper mechanism (not shown) for holding the fixed state of the top plate 91 may be interposed, but this is a complicated mechanism having a plurality of mechanisms. As a result, not only is the lifting operation troublesome, but also the number of members increases and the cost increases.

[0008] Here, the above-described problem is caused by adopting a structure in which a top plate is raised and lowered by using a fluid pressure cylinder such as a gas spring and mounting the cylinder body while penetrating the wagon body vertically. Of these, the two points of the protrusion of the top plate in the horizontal direction and the restriction on the height adjustment position can be solved. However, such a configuration has a problem in that the cylinder body restricts the space in the wagon, and it is not possible to secure a sufficient mounting space for a drawer or the like.

Also disclosed is a configuration in which, instead of using a fluid pressure cylinder, an elevating member guided by a guide member provided in a wagon body is moved up and down by operating an operation unit provided near the top plate. However, in this case, the top plate may fall out of the wagon when the elevating member is pulled out of the guide member, and the fingers holding the top plate when the top plate is raised and lowered may be moved between the top plate and the wagon. There was a risk of being caught between the main body.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it has been made possible to raise and lower a top plate with a simple and safe mechanism, thereby improving workability and reducing costs. Aim.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a guide member fixed vertically to a wagon body, a top plate mounted on a top end in a horizontal direction, and a vertical direction along the guide member. And a latch mechanism having a locking member for locking the lifting member at an arbitrary position of the guide member, and between the guide member and the lifting member, a retaining hole, There is provided a pull-out prevention mechanism that is locked to the retaining hole and prevents the lifting member from being pulled out from the upper end of the guide member.

According to this means, when the top plate is lifted,
The elevating member is vertically moved up and down along the guide member fixed to the wagon body, and when lifted to a desired height, the elevating member is locked to the guide member by the latch mechanism, and the height of the top plate is adjusted. . When the top plate is lifted to a predetermined position, the retaining piece engages with the retaining hole, and the removal of the elevating member from the upper end of the guide member is prevented. That is, the upper limit position of the top plate is determined.

Further, the present invention relates to a pull-out preventing mechanism,
A retaining hole is formed in the guide member, and the retaining piece is urged toward the lower end of the elevating member so as to be able to protrude and retract. More specifically, a latch mechanism is formed on a side surface of the guide member, and a pull-out prevention mechanism is formed on a bottom surface connecting the side surfaces of the guide member.

According to this means, the retaining piece formed on the lower end side of the elevating member is pressed against the inner surface of the guide member while the elevating member is moving up and down along the guide member, and resists the urging force. When it reaches the position of the retaining hole, the pressed retaining piece is urged and protrudes and engages with the retaining hole,
At the upper limit position, the elevation of the tabletop is restricted.

[0015] The present invention also provides a guide member fixed vertically to the wagon body, an elevating member having a top plate mounted on the upper end in a horizontal direction and vertically moving along the guide member.
A latch mechanism having a locking member for locking the elevating member at an arbitrary position on the guide member, and an elevating lever provided at an upper end of the elevating member and connected to the locking member to operate the elevating member. The raising / lowering lever is connected to the locking member so that the link between the raising and lowering member and the locking member is released when the lifting member is raised.

According to this means, the top plate can be moved up and down through the elevation of the elevating member by operating the elevating lever to retract the locking member. On the other hand, the lifting lever
When the lifting member is lifted, it is connected to the locking member so that the interlock with the engagement and disengagement of the locking member is released, so even if the lifting member is raised by holding the top plate, the lifting lever A state in which the slide in the vertical direction is released is formed.

In the present invention, the locking member and the elevating lever are connected to each other by a vertically extending elongated hole and a connecting pin slidably mounted in the elongated hole.
Further, the locking member and the elevating lever are connected via a connecting bar extending in a vertical direction of the elevating member, and one end of the connecting bar is provided with the long hole.

According to this means, when the connecting pin is brought into contact with the upper edge of the long hole and the elevating lever is pulled up, the locking member is retracted, and the elevating member can be raised and lowered. On the other hand, when the locking member is pressed by the guide member and retracts, the connecting pin only slides in the elongated hole, and the elevating lever does not slide in the vertical direction in conjunction with the recession of the locking member.

Further, in the lifting / lowering metal fitting of the wagon top plate according to the present invention, the lifting / lowering lever is raised / lowered along a guide surface formed in the lifting / lowering member.

According to this means, even when a force intersecting the direction in which the elevating member moves up and down is applied when the elevating lever is operated, the elevating lever is operated in the vertical direction along the guide surface.

Further, the present invention provides a guide member fixed vertically to a wagon body, an elevating member having a top plate mounted on an upper end in a horizontal direction and vertically moving along the guide member.
A latch mechanism having a locking member for locking the lifting member at an arbitrary position of the guide member. The upper plate of the wagon body guides the lifting and lowering of the lifting member and the height at which the lifting lever can be gripped. A guide member for restricting the top plate from being lowered is attached.

According to this means, the ascending and descending member is guided to ascend and descend also at a portion protruding from the upper end of the guide member, and the top plate is restrained from descending by the height of the guide member so as to grip the elevating lever. Space is secured.

Further, in the wagon top and bottom elevating metal fitting according to the present invention, the locking member protrudes and retracts in the horizontal direction and locks into the locking hole, and the locking claw and the elevating member are separated. A connecting elongated member is provided between the engaging claw and the connecting member, and a guide elongated hole extending outward from the upper end and a guide pin engaged with and assembled to the guide elongated hole are provided. When the guide pin slides in the guide long hole, the locking claw can be freely moved in and out in the horizontal direction.

According to this means, the locking claw and the connecting member assembled by the guide pin slide from one end to the other end in the guide elongated hole in which the guide pin is drilled outward at the upper end. Thereby, the guide pin abuts on the peripheral edge of the guide elongated hole and the sliding in the vertical direction is regulated. Therefore, the locking claw is restricted from sliding in the vertical direction and is converted into sliding in the horizontal direction, so that the locking claw can freely appear and disappear in the horizontal direction.

Further, in the lifting and lowering metal fitting for a wagon top plate according to the present invention, the guide surface of the locking claw that contacts the peripheral edge of the locking hole and guides the immersion in the horizontal direction is directed outward at the lower end. Is formed.

According to this means, when the locking claw attempts to lift the top plate upward, the peripheral edge of the locking hole abuts on the guide surface and is pressed and immersed in the horizontal direction. When lifting, the lifting member can be raised without releasing the locking state of the locking claw in the locking hole.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Elevating bracket for wagon top plate (hereinafter referred to as “elevating bracket”) 1 in the present embodiment
Reference numeral 0 denotes a guide member 50 fixed to the wagon body 20 in the vertical direction, an elevating member 60 to which the top plate 30 is attached at the upper end in the horizontal direction, and which vertically moves along the guide member 50; A locking member 70 forming a latch mechanism with the member 60 and a guide member 80 fixed to the upper plate 24 of the wagon main body 20 are schematically constituted.

The wagon body 20 is of a type suitable for being arranged beside the learning desk, and has drawers 21 and
22, 23 are provided. The top plate 30 is formed to have substantially the same size as the upper plate 24 of the wagon body 20. The elevating position of the elevating metal fitting 10 of the upper plate 24 of the wagon body 20 is
A recess 26 is formed to allow the elevating member 60 to move up and down from the inside of the wagon body 20. In addition, wagon body 2
A plurality of casters 28 are attached to the bottom of the unit 0 so that the installation position can be moved.

As shown in FIG. 2, the guide member 50 is formed in a thin shape, has a substantially C-shaped cross section, and extends in the vertical direction. It is open. A plurality of locking holes 55 are formed in the side surface 51 of the guide member 50 in the vertical direction.
The locking hole 55 is provided so that the worker himself / herself can determine that the horizontal state of the top plate 30 is maintained during the lifting / lowering operation.
It is preferable to make the pitch interval of each hole longer. A retaining hole 56 is formed in the bottom surface 52 of the guide member 50. Then, the side surface 51 and the bottom surface 5 of the guide member 50
The second inner surface 54, together with the inner wall 251 of the wagon body 20, constitutes a guide surface of the elevating member 60. A flange 58 that allows the guide member 50 to be attached to the wagon body 20 extends from an end of the both side surfaces 51, and the flange 58 is provided with a through hole 59 for screwing. ing.

As shown in FIG. 3, the elevating member 60 has a housing 61 having an outer shape capable of elevating and lowering along the inner surface 54 of the guide member 50, and an elevating lever protruding from the upper end of the housing 61 and approaching the lower surface of the top plate 30. 62 and the lifting lever 6
2 and the locking member 70 are connected and the housing 6
A connecting bar 63, which is urged via an elastic member 64, and a lower end of the housing 61, which projects horizontally from a side wall of the housing 61 to be locked in a locking hole 55 of the guide member 50, and a lifting lever 62. , The elastic member 64 is released from the urging force of the elastic member 64 via the connecting bar 63 and is retracted.

The housing 61 is formed by combining a pair of housing members 61a and 61b having a substantially U-shaped cross section. Both the housing members 61a and 61b are formed with protruding holes 612 for the locking claws 71 on both side pieces 610 on the lower end side. Have been. An extension 613 can be provided below the protruding hole 612. The housing member 61a is provided with a fitting hole 614 for allowing the attachment of the locking member 70 in the vicinity of the protruding hole 612, and a lifting lever fitting hole in which the lifting lever 62 can be fitted at the upper end. 615 are drilled. On the other hand, on the bottom piece 611 of the housing member 61b, a leaf spring-shaped retaining piece 616 including an inclined guide surface 616a and a retaining surface 616b of the retaining hole 56 is formed on the lower end side.

The elevating lever 62 is provided at the upper end of the housing 61 so as to protrude from a lever base 620 that can be inserted into the elevating lever insertion hole 615 toward the peripheral edge of the top plate 30. The connecting bar 63 has a length extending in the vertical direction in the housing 61, extends downward from the lever base 620, and has a lower end 63 b provided with a locking member 70.
Is linked to At a substantially vertical center of the connection bar 63, the connection bar 63 is connected to the housing member 61 b via an elastic member 64. A top plate support member B for fixing the top plate 30 to the elevating metal fitting 10 is mounted slightly above the elevating lever 62 in the horizontal direction.

As shown in FIG. 3, the locking member 70 has a guide pin 72 at the other end 63b which allows the locking claw 71 to move in and out in accordance with the vertical sliding of the elevating lever 62. It protrudes from both sides of the intersecting connecting member 720. A through hole 721 for connecting the connecting member 720 in an intersecting state with the connecting bar 63 is formed at substantially the center in the width direction of the connecting member 720. A long guide hole 75 into which the guide pin 72 engages is formed in the locking claw 71 outwardly of the upper end.
A guide surface 710 that goes outward at the lower end and a locking surface 711 that locks with the locking hole 55 are formed. The locking claw 71 is assembled by engaging the guide pin 72 into the elongated guide hole 75 and then engaging the guide pin 72 into the elongated hole 730 of the locking claw support member 73. Note that a projection 731 that fits into the fitting hole 64 of the housing member 61a is provided on the locking claw support member 73 at a corresponding position.

The guide member 80 guides the lifting and lowering member 60 protruding from the inside of the wagon body 20 when the top plate 30 is raised to prevent vibration, and at the same time, raises the lifting lever 62 to a height at which the lifting lever 62 can be gripped. It has a U-shaped guide portion 81 formed with a guide surface 81a along the side piece 610 and the bottom piece 611 of the elevating member 60, and holds the grip portion 621 of the elevating lever 62. It is formed as high as possible. The guide member 80 is connected to the wagon body 20.
The positioning portion 82 is brought into contact with the edge of the concave portion 26 formed at the position where the lifting member 60 is raised and lowered on the upper plate 24, and is positioned and fixed. The guide member 81 is provided on the surface of the guide surface 81a which is in contact with the bottom piece 611 of the lift member 60.
0 when the guide plate 50 is inserted into the guide member 50 from the upper end of the wagon 0, or when the top plate 30 is removed together with the elevating member 60 from the wagon body 20. Grooves can be drilled.

Next, a method of using the elevating metal fitting 10 will be described. First, with respect to the pair of lifting / lowering metal fittings 10, the flange portions 58 of the guide members 50 are respectively brought into contact with the inner walls 251 of the side plates 25 of the wagon body 20, and screws are inserted into the through holes 59, and the guide members 50 are attached to the wagon body 10. Fix to 20. At this time, the guide member 50 is fixed to a position where the elevating member 60 can move up and down from the concave portion 26 of the upper plate 24 of the wagon body 20. On the other hand, the elevating member 60 includes a housing member 61b.
After the connecting bar 63 is housed therein, and the locking member 70 is further attached to the lower end 63b of the connecting bar 63 with the locking claw 71 protruding from the projecting hole 612 of the housing member 61b,
The housing member 61a is mounted on the housing member 61b. Above the elevating lever 62, the top plate 30 is fixed to a top plate supporting member B extending in the horizontal direction, and in this state, the elevating member 60 is fixed from the upper end of the guide member 50 fixed to the wagon body 20.
When the lower end of the wagon is inserted, the top plate 30 is attached to the wagon body 20.

When the top plate 30 is lifted, the guide surface 710 of the locking claw 71 is raised by pulling up the top plate 30.
The abutment is pressed against the peripheral edge of the locking hole 55, and the locking claw 71 is pressed toward the inside of the housing 61 (FIG. 7).
At this time, the guide pin 72 is connected to the guide slot 7 of the locking claw 71.
5 and the lower end of the elongated hole 730 of the locking claw support member 73, both slide to the upper end side by the pressing of the locking claw 71 in the horizontal direction, and resist the urging force of the elastic member 64. Then, the elevating lever 62 is automatically pulled up (FIG. 8). Accordingly, the locked state of the lifting member 60 is released, and the top plate 30 can be raised. Top plate 3 to desired height
0, the locking hole 55 of the guide member 50 and the lifting member 60
When the protruding holes 612 are aligned in the horizontal direction, the guide pin 72 positioned on the upper end side of the guide long hole 75 of the locking claw 71 and the long hole 730 of the locking claw support member 73 by the urging force of the elastic member 64. Are slid to the lower end side, and the elevating lever 62 is automatically lowered. Therefore, the locking claws 71 protrude from the protruding holes 612 toward the locking holes 55 of the guide member 50, the locking surfaces 711 are locked on the periphery of the locking holes 55, and the elevating member 60 is positioned, and the top plate 30 is positioned.
Height is fixed.

When the elevating member 60 is raised, the guide surface 616a of the retaining piece 616 of the elevating member 60 is normally pressed against the inner surface 54 of the elevating member 60.
, The pressing on the guide surface 616a is released, the retaining piece 616 projects, the locking surface 616b is locked on the edge of the retaining hole 56, and the elevating member 60 is connected to the guide member 50.
Pulling out from the upper end of the is restricted. That is, the engaging height of the retaining piece 616 is the upper limit position of the top plate 30. When the elevating member 60 approaches the upper limit position of the top plate 30, the extending portion 613 of the elevating member 60 is in the guide member 50, and the guide surface 81a of the guide member 80 is
Since it is in contact with the housing 61 of the elevating member 60 pulled out from 0, vibrations during the elevating and lowering and fixing of the top plate 30 are restricted.

On the other hand, when lowering the top plate 30, the top plate 3
When the lifting lever 62 is pulled up at the same time as gripping the periphery of the zero, the guide pin 72 slides in the guide long hole 75 and the long hole 730 toward the upper end side against the urging force of the elastic member 64, and The stop pawl 71 is immersed in the housing 61 and the elevating member 60 can be lowered. At this time, even if the top plate 30 is at the upper limit position, if the elevating member 60 is to be lowered, the guide surface 616a of the retaining piece 616 comes into contact with the peripheral portion of the retaining hole 56 and is pressed. Stop piece 6
16 can be easily immersed. Then, when the top plate 30 is lowered to a desired height in the same manner as the above-described lifting operation, the locking claws 71 protrude, and the lowering of the lifting member 60 is restricted. When the elevating member 60 is lowered, the top support member B comes into contact with the guide member 80, and the elevating lever 62 is inserted into the elevating lever insertion hole 615, whereby the lowering of the top 30 is restricted. That is, this state is the lower limit position of the top 30.

When the lifting / lowering fitting 10 according to the present embodiment is attached to the wagon body 20, the drawers 21, 22, and 23 of the wagon body 20 are, for example, as shown in FIG. A rail R is attached along the front and rear direction in the wagon body 20 along the line, and the roller R1 is supported on the rail R so that the drawer 2 is attached.
1, 22, 23 can be stored. Accordingly, the storage space of each drawer is sufficient if the width of each drawer is reduced by the thickness of the thinly formed guide member 50. Therefore, according to the thin guide member 50, the elevating member 60 can be installed without using much space in the wagon body 20, and the storage space can be reduced without reducing the mounting space for the drawers 21, 22, 23. Can be secured.

According to the present embodiment, the top plate 30 disposed on the wagon body 20 is moved up and down along the inner surface 54 of the guide member 50 fixed to the inner wall 251 of the side plate 25 of the wagon body 20. The height of the top plate 30 can be adjusted in multiple stages by raising and lowering in the vertical direction and locking the locking claws 71 of the locking member 70 in the locking holes 55 of the guide member 50. Therefore, in the case of a learning desk, the work surface can be widened by pulling up the top plate 30 to the same height as the top plate of the desk main body, which is suitable when a personal computer or the like is placed on the top plate of the desk main body. The wagon main body 20 is moved by the casters 28 by positioning the top plate 30 at the same height as that of a device other than the desk (for example, a small rack or the like), and is disposed beside the device other than the desk. It is also possible to increase the area.

Further, since the top plate 30 is moved up and down on the wagon body 20 only by supporting the top plate 30 on the left and right sides of the wagon body 20, the thing intervening in the space between the top plate 30 and the upper plate 24 of the wagon body 20. In addition, the space can be effectively utilized, and at the same time, the appearance can be prevented from being impaired.

The elevating member 60 automatically retracts the locking claws 71 by simply pulling up the top plate 30 when the top plate 30 is raised, and also when the top plate 30 is lowered. 30 while simultaneously grasping the peripheral portion of
Is gripped and pulled up, the locking claws 71 enter and the top plate 30
Can be lowered, so that the elevating operation of the top plate 30 is extremely simple, and the working efficiency can be improved.

In particular, when the top plate 30 is lifted, the removal of the elevating member 60 from the upper end of the guide member 50 is restricted by the locking of the retaining piece 616 that can be freely retracted into the retaining hole 56. 30 is prevented from falling off, and safety is enhanced. Since the retaining piece 616 is formed so as to be able to protrude and retract so as to be able to enter the guide member 50, it is not necessary to extend the lifting member 60 in the vertical direction in order to form the retaining piece 56. A compact design becomes possible.

Further, by raising and lowering the elevating member 60 along the guide member 80 fixed on the wagon body 20, the elevating member 60 protruding from the upper end of the guide member 50 is guided by the guide member 80 and the top plate Even when the 30 is pulled up to the upper limit position, the vibration of the elevating member 60 is regulated, so that the top 30 can be used in a stable state regardless of the elevating state. In addition, by regulating the lower limit position of the top plate 30, the height of the lift lever 62 is secured to facilitate the operation of the lift lever 62, and at the same time, the wagon body 20 is fixed to the recess 26 of the upper plate 24 of the wagon body 20. By covering the processed part on the wagon body 20, it can also play a role of maintaining aesthetic appearance.

Next, another embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 11, the elevating member 60 in this embodiment is formed so as to be able to move up and down in the guide member 50 by assembling the housing 650 and the cover 651.
The housing 650 has a lever insertion portion 66 having a guide surface 66a formed at the upper end thereof for guiding the lifting lever 62 up and down.
And a slide groove 67 for guiding the slide of the connecting bar 63.
, A protrusion hole 612, a fitting insertion hole 614, and a retaining piece housing hole 68 that can accommodate a retaining piece 69 described later. An accommodation hole 670 is formed in the slide groove 67 to accommodate the elastic member 64 '. A retaining piece 69 having a retaining portion composed of a guide surface 616a and a locking surface 616b is accommodated in the retaining piece housing hole 68 while being urged in the horizontal direction by an elastic member 690. The cover 6
The 51 is provided with a projection hole 652 through which the retaining portion of the retaining piece 69 can protrude, and a fitting insertion hole 653 into which the projection 731 of the locking claw support member 73 is fitted.

The raising / lowering lever 62 has both ends 62 a, 62 a which are gradually curved downward, and a lever fitting portion 66.
And is fixed to a lever base 620 to be inserted into. The lever base 620 is provided with a guide groove 621 for guiding the slide of the connection bar 63.
A connection pin 622 that enables connection with the third connector 3 can be provided. The connection bar 63 has an elongated hole 630 that extends in the vertical direction at the upper end side and has a size that allows the connection pin 622 to slide. In the long hole 630, the connection pin can be connected to the upper end side in a normal state. The connecting bar 63 is provided with a notch 630, which is accommodated in the accommodation hole 670 in a state where the elastic member 64 ′ is urged from above.

As shown in FIG. 11, the locking member 70 can have a connecting pin 725 protrudingly provided substantially at the center of the connecting member 720 for connecting to the connecting bar 63 in an intersecting state. The connecting pin 725 is formed so as to be connectable to a vertically elongated hole 735 formed in the locking claw support member 73. In addition, a projection 731 that fits into the fitting hole 653 of the cover 651 protrudes from the locking claw support member 73 at a corresponding position.

According to the present embodiment, the top plate 30 can be raised simply by gripping the top plate 30, as in the above-described embodiment. At this time, the connecting bar 63 is raised against the urging force of the elastic member 64 ′ due to the recess of the locking claw 71, but the elevating lever 62 is moved by the connecting pin 622 of the lever base 620 to the elongated hole 630 of the connecting bar 63. By sliding the inside downward from above, the operation of the elevating lever 62 is released without interlocking with the immersion operation of the locking claw 71. On the other hand, when the top plate 30 is lowered, by pulling up the elevating lever 62, the connecting pin 622 in contact with the upper edge of the long hole 630 is pulled upward, and the connecting bar 63 is biased by the elastic member 64 ′. The locking claw 71 is sunk upward by sliding upward.

Therefore, when the top plate 30 is raised, if the lifting lever 62 is not gripped, fingers are
Even when it is positioned between the lifting lever 62 and the lifting lever 62, the upward sliding of the lifting lever 62 interlocked with the engagement of the locking claw 71 is released, so that finger jamming can be prevented.

The lifting lever 62 has a lever base 62.
0 is guided by the lever insertion portion 66 and becomes operable. Therefore, even if a force is applied in either direction (in particular, in front of the wagon body 20) of both ends of the elevating lever 62 during operation,
Smooth operation can be enabled. In addition, the connection bar 63 is also guided up and down by being guided by the guide groove 621 of the lever base 620 and the slide groove 67 of the housing 650, so that the lifting operation in the lifting member 60 can be performed smoothly.

The lifting lever 62 has two ends 62a, 6a.
Since 2a is gradually curved downward, even if a force is applied forward when gripping the elevating lever 62,
It becomes easy to continue holding.

In each of the above embodiments, the case where the lifting and lowering fitting 10 is applied to the wagon body 20 arranged beside the learning desk is shown. However, since the height can be freely adjusted, various types of kitchen wagons and the like can be used. Can be applied to wagons. Further, the present invention is applicable not only to wagons but also to those using a top plate such as a sleeve desk.

The guide member 50 and the elevating member 60 are
Although the structure in which the locking member 70 and the retaining piece 616 are provided on the elevating member 60 has been described, the guide member 50 may be provided with these components.
Various configurations can be adopted as long as the same effects as above can be obtained.

[0055]

As described above, the lifting / lowering metal fitting for the wagon top plate according to the present invention has a simple structure in which the locking member is locked in the locking hole against the vertical movement of the top plate. At the same time, it is possible to maintain the height of the top plate, making the lifting work easy, and at the same time, providing a pull-out prevention mechanism between the lifting member and the guide member,
Since the elevating member is prevented from being pulled out from the upper end of the guide member, it is possible to prevent the top plate from falling off and to ensure safety when the top plate is raised and lowered. Therefore, the lifting and lowering bracket has a simple configuration and is also considered in terms of safety, and can improve the practicality. In addition, by using a pair of the same configuration as the pair of side plates of the wagon body, the lifting and lowering bracket is used. Production costs can be reduced.

Further, as for the elevating lever for operating the elevating and retracting of the locking member, when the elevating and lowering lever is operated without operating the elevating lever itself, the elevating lever is prevented from interlocking. When the elevating member is raised, even if a finger is located between the top plate and the elevating lever, it is possible to prevent the finger from being stuck due to the elevation of the elevating lever.

Further, by providing a guide member on the upper plate of the wagon body for guiding the lifting member up and down, even if the amount of protrusion of the lifting member from the upper end of the guide member increases, the guide member alone is not sufficient. In addition to preventing the vibration of the elevating member, this guide member is formed at a height at which the elevating lever can be gripped, so that it functions as a stopper that regulates the descent of the top plate. Also, it is possible to prevent the finger from being jammed during the lowering operation of the top board. The guide member also has the effect of hiding the processing portion of the wagon body when attaching the lifting / lowering bracket, and maintaining the appearance of the wagon body.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a lifting / lowering metal fitting for a wagon top plate according to the present invention.

FIG. 2 is an exploded perspective view showing a mounting state of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 to a wagon body.

FIG. 3 is an exploded perspective view showing each component of a lifting / lowering bracket of the wagon top plate of FIG. 1;

FIG. 4 is a perspective view illustrating attachment of a guide member of a lifting / lowering bracket of the wagon top plate of FIG. 1 to a wagon main body.

5 is an overall view showing the elevating operation of the elevating metal fitting of the wagon top plate of FIG. 1;

FIG. 6 is an explanatory view of a main part showing an elevating operation of an elevating metal fitting of the wagon top plate of FIG. 1;

FIG. 7 is an explanatory view of a relevant part showing a state in which a locking claw of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 is in contact with a locking hole.

FIG. 8 is an explanatory view of a main part showing a state in which a locking claw of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 is immersed;

FIG. 9 is a cross-sectional view showing the locking operation of the retaining piece of the lifting bracket of the wagon top plate of FIG. 1 in the retaining hole.

FIG. 10 is a front view showing a state where the elevating metal fitting of the wagon top plate of FIG. 1 is attached to the wagon body.

FIG. 11 is an exploded perspective view showing components of another embodiment of a lifting / lowering metal fitting for a wagon top plate according to the present invention.

FIG. 12 is a longitudinal sectional view of a lifting / lowering metal fitting of the wagon top plate of FIG. 11;

13 is an explanatory view of a main part showing a relationship between an elevating operation of an elevating and lowering metal fitting of the wagon top plate of FIG. 11 and an elevating lever.

FIG. 14 is an overall perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Elevating metal fitting (of wagon top plate) 20 Wagon body 24 Upper plate 25 Side plate 30 Top plate 50 Guide member 55 Locking hole 56 Retaining hole 60 Elevating member 61 Housing 616 Retaining piece 62 Elevating lever 620 Lever base 621 Guide groove 622 connecting pin 63 connecting bar 630 long hole 64, 64 'elastic member 66 lever fitting portion 67 sliding groove 70 locking member 71 locking claw 710 guide surface 72 guide pin 73 locking claw support member 80 guide member

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[Procedure amendment]

[Submission date] October 22, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Top and bottom metal fittings for wagon top plate

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wagon top-and-bottom metal fitting suitable for a wagon to be used by being arranged beside a learning desk, a kitchen or the like.

[0002]

2. Description of the Related Art In recent years, learning desks and the like adopt a configuration in which a drawer is formed as a wagon with a separate body from the desk body. Such a wagon is normally stored in the space below the top of the desk body, and is pulled out from the space below the top of the desk body via a caster or the like during desk work, and the wagon top is removed together with the top of the desk body. Can be used as work surface.

[0003] However, the top plate of such a wagon is at a lower height than the top plate of the desk body for storage,
It is difficult to perform comfortable work, for example, a large step is generated between the top plate of the desk body and the top plate of the wagon, and it is necessary to take a forward bent posture.

In order to avoid such inconveniences, wagons have been developed which allow the top plate to be raised and lowered to the same height as the top plate of the desk body. For example, as shown in FIG.
Numeral 0 includes a top plate 91 that can be moved up and down, an upper plate 92, and a link mechanism 93 that moves the top plate 91 up and down on the upper plate 92. At the time of use, the top plate 91 is always lowered and stored under the desk body (not shown), while the work is raised to the same height as the top plate of the desk body by the link mechanism 93 at the time of work, and is widened together with the top plate of the desk body. A flat work surface can be formed.

[0005]

By the way, when the top plate is moved up and down by the conventional wagon 90, the height of the top plate 91 is adjusted by the link mechanism 93 so that the top plate 91 is moved to the lower limit position and the upper limit position. However, there is a problem that it is difficult to adjust the height of the wagon (for example, a kitchen wagon or the like) that can be adjusted freely.

Since a link mechanism 93 is interposed between the top plate 91 and the top plate 92 which have been raised, the space formed between the top plate 92 and the top plate 91 must be used. There was a problem that it became difficult. Further, in the link mechanism 93 as shown in FIG. 14, the top plate 91 rises in a circular arc, and the position of the top plate 91 at the time of ascending shifts more horizontally than at the time of descent. In addition, there is a problem that the load on the top plate 91 is limited due to the unstable state.

Further, when the link mechanism 93 is employed, a stopper mechanism (not shown) for holding the fixed state of the top plate 91 may be interposed, but this is a complicated mechanism having a plurality of mechanisms. As a result, not only is the lifting operation troublesome, but also the number of members increases and the cost increases.

[0008] Here, the above-described problem is caused by adopting a structure in which a top plate is raised and lowered by using a fluid pressure cylinder such as a gas spring and mounting the cylinder body while penetrating the wagon body vertically. Of these, the two points of the protrusion of the top plate in the horizontal direction and the restriction on the height adjustment position can be solved. However, such a configuration has a problem in that the cylinder body restricts the space in the wagon, and it is not possible to secure a sufficient mounting space for a drawer or the like.

Also disclosed is a configuration in which, instead of using a fluid pressure cylinder, an elevating member guided by a guide member provided in a wagon body is moved up and down by operating an operation unit provided near the top plate. However, in this case, the top plate may fall out of the wagon when the elevating member is pulled out of the guide member, and the fingers holding the top plate when the top plate is raised and lowered may be moved between the top plate and the wagon. There was a risk of being caught between the main body.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it has been made possible to raise and lower a top plate with a simple and safe mechanism, thereby improving workability and reducing costs. Aim.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a guide member fixed vertically to a wagon body, a top plate mounted on a top end in a horizontal direction, and a vertical direction along the guide member. Lifting member, a latch mechanism having a locking member for locking the lifting member at an arbitrary position of the guide member, and a locking member provided at an upper end of the lifting member and connected to the locking member to allow the locking member to protrude and retract. A lifting lever to be operated, and the lifting lever is connected to the locking member so that the linking of the locking member with the projection of the locking member when lifting the lifting member is released.

According to this means, the top plate can be moved up and down through the elevation of the elevating member by operating the elevating lever to retract the locking member. On the other hand, the lifting lever
When the lifting member is lifted, it is connected to the locking member so that the interlock with the engagement and disengagement of the locking member is released, so even if the lifting member is raised by holding the top plate, the lifting lever A state in which the slide in the vertical direction is released is formed.

In the present invention, the locking member and the elevating lever are connected to each other by a vertically extending elongated hole and a connecting pin slidably mounted in the elongated hole.
Further, the locking member and the elevating lever are connected via a connecting bar extending in a vertical direction of the elevating member, and one end of the connecting bar is provided with the long hole.

According to this means, when the connecting pin is brought into contact with the upper edge of the elongated hole and the lifting lever is pulled up, the locking member is retracted and the lifting member can be raised and lowered. On the other hand, when the locking member is pressed by the guide member and retracts, the connecting pin only slides in the elongated hole, and the elevating lever does not slide in the vertical direction in conjunction with the recession of the locking member.

Further, in the lifting / lowering metal fitting of the wagon top plate according to the present invention, the lifting / lowering lever moves up / down along a guide surface formed in the lifting / lowering member.

According to this means, even when a force intersecting the direction in which the elevating member moves up and down is applied when the elevating lever is operated, the elevating lever is operated in the vertical direction along the guide surface.

Further, the present invention provides a guide member fixed vertically to a wagon body, an elevating member having a top plate mounted on an upper end in a horizontal direction and vertically moving along the guide member.
A latch mechanism having a locking member for locking the lifting member at an arbitrary position of the guide member. The upper plate of the wagon body guides the lifting and lowering of the lifting member and the height at which the lifting lever can be gripped. A guide member for restricting the top plate from being lowered is attached.

According to this means, the elevating member guides the elevating and lowering of the portion protruding from the upper end of the guide member, and the top plate is restrained from descending by the height of the guide member, and grips the elevating lever. Space is secured.

Further, in the wagon top and bottom elevating metal fitting according to the present invention, the locking member is formed so as to protrude and retract in the horizontal direction and is locked in the locking hole, and the locking claw and the elevating member are separated. A connecting elongated member is provided between the engaging claw and the connecting member, and a guide elongated hole extending outward from the upper end and a guide pin engaged with and assembled to the guide elongated hole are provided. When the guide pin slides in the guide long hole, the locking claw can be freely moved in and out in the horizontal direction.

According to this means, the locking claw and the connecting member assembled by the guide pin slide from one end to the other end in the guide elongated hole in which the guide pin is drilled outward at the upper end. Thereby, the guide pin abuts on the peripheral edge of the guide elongated hole and the sliding in the vertical direction is regulated. Therefore, the locking claw is restricted from sliding in the vertical direction and is converted into sliding in the horizontal direction, so that the locking claw can freely appear and disappear in the horizontal direction.

Further, in the lifting and lowering metal fitting for a wagon top plate according to the present invention, the guide surface of the locking claw, which abuts on the peripheral edge of the locking hole and guides the immersion in the horizontal direction, faces outward at the lower end. Is formed.

According to this means, when the locking claw attempts to lift the top plate upward, the peripheral edge of the locking hole abuts on the guide surface and is pressed and immersed in the horizontal direction. When lifting, the lifting member can be raised without releasing the locking state of the locking claw in the locking hole.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Elevating bracket for wagon top plate (hereinafter referred to as “elevating bracket”) 1 in the present embodiment
Reference numeral 0 denotes a guide member 50 fixed to the wagon body 20 in the vertical direction, an elevating member 60 to which the top plate 30 is attached at the upper end in the horizontal direction, and which vertically moves along the guide member 50; A locking member 70 forming a latch mechanism with the member 60 and a guide member 80 fixed to the upper plate 24 of the wagon main body 20 are schematically constituted.

The wagon body 20 is of a type suitable for being arranged beside the learning desk, and has drawers 21 and
22, 23 are provided. The top plate 30 is formed to have substantially the same size as the upper plate 24 of the wagon body 20. The elevating position of the elevating metal fitting 10 of the upper plate 24 of the wagon body 20 is
A recess 26 is formed to allow the elevating member 60 to move up and down from the inside of the wagon body 20. In addition, wagon body 2
A plurality of casters 28 are attached to the bottom of the unit 0 so that the installation position can be moved.

As shown in FIG. 2, the guide member 50 is formed in a thin shape, has a substantially C-shaped cross section, and extends in the vertical direction. It is open. A plurality of locking holes 55 are formed in the side surface 51 of the guide member 50 in the vertical direction.
The locking hole 55 is provided so that the worker himself / herself can determine that the horizontal state of the top plate 30 is maintained during the lifting / lowering operation.
It is preferable to make the pitch interval of each hole longer. A retaining hole 56 is formed in the bottom surface 52 of the guide member 50. Then, the side surface 51 and the bottom surface 5 of the guide member 50
The second inner surface 54, together with the inner wall 251 of the wagon body 20, constitutes a guide surface of the elevating member 60. A flange 58 that allows the guide member 50 to be attached to the wagon body 20 extends from an end of the both side surfaces 51, and the flange 58 is provided with a through hole 59 for screwing. ing.

As shown in FIG. 3, the elevating member 60 has a housing 61 having an outer shape capable of elevating and lowering along the inner surface 54 of the guide member 50, and an elevating lever protruding from the upper end of the housing 61 and approaching the lower surface of the top plate 30. 62 and the lifting lever 6
2 and the locking member 70 are connected and the housing 6
A connecting bar 63, which is urged via an elastic member 64, and a lower end of the housing 61, which projects horizontally from a side wall of the housing 61 to be locked in a locking hole 55 of the guide member 50, and a lifting lever 62. , The elastic member 64 is released from the urging force of the elastic member 64 via the connecting bar 63 and is retracted.

The housing 61 is formed by combining a set of housing members 61a and 61b having a substantially U-shaped cross section. Both the housing members 61a and 61b are formed with protruding holes 612 for the locking claws 71 in both side pieces 610 on the lower end side. Have been. An extension 613 can be provided below the protruding hole 612. The housing member 61a is provided with a fitting hole 614 for allowing the attachment of the locking member 70 in the vicinity of the protruding hole 612, and a lifting lever fitting hole in which the lifting lever 62 can be fitted at the upper end. 615 are drilled. On the other hand, on the bottom piece 611 of the housing member 61b, a leaf spring-shaped retaining piece 616 including an inclined guide surface 616a and a retaining surface 616b of the retaining hole 56 is formed on the lower end side.

The elevating lever 62 is provided at the upper end of the housing 61 so as to protrude from a lever base 620 that can be inserted into the elevating lever insertion hole 615 toward the peripheral edge of the top plate 30. The connecting bar 63 has a length extending in the vertical direction in the housing 61, extends downward from the lever base 620, and has a lower end 63 b provided with a locking member 70.
Is linked to At a substantially vertical center of the connection bar 63, the connection bar 63 is connected to the housing member 61 b via an elastic member 64. A top plate support member B for fixing the top plate 30 to the elevating metal fitting 10 is mounted slightly above the elevating lever 62 in the horizontal direction.

As shown in FIG. 3, the locking member 70 has a guide pin 72 at the other end 63b, which allows the locking claw 71 to move in and out according to the vertical sliding of the elevating lever 62. It protrudes from both sides of the intersecting connecting member 720. A through hole 721 for connecting the connecting member 720 in an intersecting state with the connecting bar 63 is formed at substantially the center in the width direction of the connecting member 720. A long guide hole 75 into which the guide pin 72 engages is formed in the locking claw 71 outwardly of the upper end.
A guide surface 710 that goes outward at the lower end and a locking surface 711 that locks with the locking hole 55 are formed. The locking claw 71 is assembled by engaging the guide pin 72 into the elongated guide hole 75 and then engaging the guide pin 72 into the elongated hole 730 of the locking claw support member 73. Note that a projection 731 that fits into the fitting hole 64 of the housing member 61a is provided on the locking claw support member 73 at a corresponding position.

The guide member 80 guides the elevating member 60 protruding from the inside of the wagon body 20 when the top plate 30 is raised, thereby preventing vibration and preventing the elevating member 60 from being lifted up to a height at which the elevating lever 62 can be gripped. It has a U-shaped guide portion 81 in which a guide surface 81a is formed along the side piece 610 and the bottom piece 611 of the elevating member 60, and holds the grip portion 621 of the elevating lever 62. It is formed as high as possible. The guide member 80 is connected to the wagon body 20.
The positioning portion 82 is brought into contact with the edge of the concave portion 26 formed at the position where the lifting member 60 is raised and lowered on the upper plate 24, and is positioned and fixed. The guide member 81 is provided on the surface of the guide surface 81a which is in contact with the bottom piece 611 of the lift member 60.
0 when the guide plate 50 is inserted into the guide member 50 from the upper end of the wagon 0, or when the top plate 30 is removed together with the elevating member 60 from the wagon body 20. Grooves can be drilled.

Next, a method of using the elevating metal fitting 10 will be described. First, with respect to the pair of lifting / lowering metal fittings 10, the flange portions 58 of the guide members 50 are respectively brought into contact with the inner walls 251 of the side plates 25 of the wagon body 20, and screws are inserted into the through holes 59, and the guide members 50 are attached to the wagon body 10. Fix to 20. At this time, the guide member 50 is fixed to a position where the elevating member 60 can move up and down from the concave portion 26 of the upper plate 24 of the wagon body 20. On the other hand, the elevating member 60 includes a housing member 61b.
After the connecting bar 63 is housed therein, and the locking member 70 is further attached to the lower end 63b of the connecting bar 63 with the locking claw 71 protruding from the projecting hole 612 of the housing member 61b,
The housing member 61a is mounted on the housing member 61b. Above the elevating lever 62, the top plate 30 is fixed to a top plate supporting member B extending in the horizontal direction, and in this state, the elevating member 60 is fixed from the upper end of the guide member 50 fixed to the wagon body 20.
When the lower end of the wagon is inserted, the top plate 30 is attached to the wagon body 20.

When the top plate 30 is to be lifted, the guide surface 710 of the locking claw 71 is raised by pulling up the top plate 30.
The abutment is pressed against the peripheral edge of the locking hole 55, and the locking claw 71 is pressed toward the inside of the housing 61 (FIG. 7).
At this time, the guide pin 72 is connected to the guide slot 7 of the locking claw 71.
5 and the lower end of the elongated hole 730 of the locking claw support member 73, both slide to the upper end side by the pressing of the locking claw 71 in the horizontal direction, and resist the urging force of the elastic member 64. Then, the elevating lever 62 is automatically pulled up (FIG. 8). Accordingly, the locked state of the lifting member 60 is released, and the top plate 30 can be raised. Top plate 3 to desired height
0, the locking hole 55 of the guide member 50 and the lifting member 60
When the protruding holes 612 are aligned in the horizontal direction, the guide pin 72 positioned on the upper end side of the guide long hole 75 of the locking claw 71 and the long hole 730 of the locking claw support member 73 by the urging force of the elastic member 64. Are slid to the lower end side, and the elevating lever 62 is automatically lowered. Therefore, the locking claws 71 protrude from the protruding holes 612 toward the locking holes 55 of the guide member 50, the locking surfaces 711 are locked on the periphery of the locking holes 55, and the elevating member 60 is positioned, and the top plate 30 is positioned.
Height is fixed.

When the elevating member 60 is raised, the guide surface 616a of the retaining piece 616 of the elevating member 60 is normally pressed against the inner surface 54 of the elevating member 60.
, The pressing on the guide surface 616a is released, the retaining piece 616 projects, the locking surface 616b is locked on the edge of the retaining hole 56, and the elevating member 60 is connected to the guide member 50.
Pulling out from the upper end of the is restricted. That is, the engaging height of the retaining piece 616 is the upper limit position of the top plate 30. When the elevating member 60 approaches the upper limit position of the top plate 30, the extending portion 613 of the elevating member 60 is in the guide member 50, and the guide surface 81a of the guide member 80 is
Since it is in contact with the housing 61 of the elevating member 60 pulled out from 0, vibrations during the elevating and lowering and fixing of the top plate 30 are restricted.

On the other hand, when the top plate 30 is lowered,
When the lifting lever 62 is pulled up at the same time as gripping the periphery of the zero, the guide pin 72 slides in the guide long hole 75 and the long hole 730 toward the upper end side against the urging force of the elastic member 64, and The stop pawl 71 is immersed in the housing 61 and the elevating member 60 can be lowered. At this time, even if the top plate 30 is at the upper limit position, if the elevating member 60 is to be lowered, the guide surface 616a of the retaining piece 616 comes into contact with the peripheral portion of the retaining hole 56 and is pressed. Stop piece 6
16 can be easily immersed. Then, when the top plate 30 is lowered to a desired height in the same manner as the above-described lifting operation, the locking claws 71 protrude, and the lowering of the lifting member 60 is restricted. When the elevating member 60 is lowered, the top support member B comes into contact with the guide member 80, and the elevating lever 62 is inserted into the elevating lever insertion hole 615, whereby the lowering of the top 30 is restricted. That is, this state is the lower limit position of the top 30.

When the lifting and lowering fitting 10 according to the present embodiment is attached to the wagon body 20, the drawers 21, 22, and 23 of the wagon body 20 are, for example, as shown in FIG. A rail R is attached along the front and rear direction in the wagon body 20 along the line, and the roller R1 is supported on the rail R so that the drawer 2 is attached.
1, 22, 23 can be stored. Accordingly, the storage space of each drawer is sufficient if the width of each drawer is reduced by the thickness of the thinly formed guide member 50. Therefore, according to the thin guide member 50, the elevating member 60 can be installed without using much space in the wagon body 20, and the storage space can be reduced without reducing the mounting space for the drawers 21, 22, 23. Can be secured.

According to the present embodiment, the top plate 30 disposed on the wagon body 20 is moved up and down along the inner surface 54 of the guide member 50 fixed to the inner wall 251 of the side plate 25 of the wagon body 20. The height of the top plate 30 can be adjusted in multiple stages by raising and lowering in the vertical direction and locking the locking claws 71 of the locking member 70 in the locking holes 55 of the guide member 50. Therefore, in the case of a learning desk, the work surface can be widened by pulling up the top plate 30 to the same height as the top plate of the desk main body, which is suitable when a personal computer or the like is placed on the top plate of the desk main body. The wagon main body 20 is moved by the casters 28 by positioning the top plate 30 at the same height as that of a device other than the desk (for example, a small rack or the like), and is disposed beside the device other than the desk. It is also possible to increase the area.

Further, since the top plate 30 is raised and lowered on the wagon body 20 only by supporting the left and right sides of the wagon body 20, the one interposed in the space between the top plate 30 and the upper plate 24 of the wagon body 20. In addition, the space can be effectively utilized, and at the same time, the appearance can be prevented from being impaired.

The elevating member 60 automatically lowers the claw 71 by simply pulling up the top plate 30 when the top plate 30 is raised, and also when lowering the top plate 30. 30 while simultaneously grasping the peripheral portion of
Is gripped and pulled up, the locking claws 71 enter and the top plate 30
Can be lowered, so that the elevating operation of the top plate 30 is extremely simple, and the working efficiency can be improved.

In particular, when the top plate 30 is lifted, the removal of the elevating member 60 from the upper end of the guide member 50 is restricted by the locking of the retaining piece 616 which can be freely retracted into the retaining hole 56. 30 is prevented from falling off, and safety is enhanced. Since the retaining piece 616 is formed so as to be able to protrude and retract so as to be able to enter the guide member 50, it is not necessary to extend the elevating member 60 in the vertical direction to form the retaining piece 56. A compact design becomes possible.

Further, by raising and lowering the elevating member 60 along the guide member 80 fixed on the wagon body 20, the elevating member 60 protruding from the upper end of the guide member 50 is guided by the guide member 80, and Even when the 30 is pulled up to the upper limit position, the vibration of the elevating member 60 is regulated, so that the top 30 can be used in a stable state regardless of the elevating state. In addition, by regulating the lower limit position of the top plate 30, the height of the lift lever 62 is secured to facilitate the operation of the lift lever 62, and at the same time, the wagon body 20 is fixed to the recess 26 of the upper plate 24 of the wagon body 20. By covering the processed part on the wagon body 20, it can also play a role of maintaining aesthetic appearance.

Next, another embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 11, the elevating member 60 in the present embodiment is formed so as to be able to move up and down in the guide member 50 by assembling the housing 650 and the cover 651.
The housing 650 has a lever insertion portion 66 having a guide surface 66a formed at the upper end thereof for guiding the lifting lever 62 up and down.
And a slide groove 67 for guiding the slide of the connecting bar 63.
, A protrusion hole 612, a fitting insertion hole 614, and a retaining piece housing hole 68 that can accommodate a retaining piece 69 described later. An accommodation hole 670 is formed in the slide groove 67 to accommodate the elastic member 64 '. A retaining piece 69 having a retaining portion composed of a guide surface 616a and a locking surface 616b is accommodated in the retaining piece housing hole 68 while being urged in the horizontal direction by an elastic member 690. The cover 6
The 51 is provided with a projection hole 652 through which the retaining portion of the retaining piece 69 can protrude, and a fitting hole 653 into which the projection 731 of the locking claw support member 73 is fitted.

The lifting lever 62 has both ends 62 a, 62 a that are gradually curved downward, and a lever fitting portion 66.
And is fixed to a lever base 620 to be inserted into. The lever base 620 is provided with a guide groove 621 for guiding the slide of the connection bar 63.
A connection pin 622 that enables connection with the third connector 3 can be provided. The connection bar 63 has an elongated hole 630 that extends in the vertical direction at the upper end side and has a size that allows the connection pin 622 to slide. In the long hole 630, the connection pin can be connected to the upper end side in a normal state. The connecting bar 63 is provided with a notch 630, which is accommodated in the accommodation hole 670 in a state where the elastic member 64 ′ is urged from above.

As shown in FIG. 11, the locking member 70 can be provided with a connecting pin 725 for connecting in a crossing state with the connecting bar 63 substantially at the center of the connecting member 720. The connecting pin 725 is formed so as to be connectable to a vertically elongated hole 735 formed in the locking claw support member 73. In addition, a projection 731 that fits into the fitting hole 653 of the cover 651 protrudes from the locking claw support member 73 at a corresponding position.

According to the present embodiment, the top plate 30 can be raised simply by gripping the top plate 30, as in the above-described embodiment. At this time, the connecting bar 63 is raised against the urging force of the elastic member 64 ′ due to the recess of the locking claw 71, but the elevating lever 62 is moved by the connecting pin 622 of the lever base 620 to the elongated hole 630 of the connecting bar 63. By sliding the inside downward from above, the operation of the elevating lever 62 is released without interlocking with the immersion operation of the locking claw 71. On the other hand, when the top plate 30 is lowered, by pulling up the elevating lever 62, the connecting pin 622 in contact with the upper edge of the long hole 630 is pulled upward, and the connecting bar 63 is biased by the elastic member 64 ′. The locking claw 71 is sunk upward by sliding upward.

Therefore, when the top plate 30 is raised, if the lifting lever 62 is not gripped, the finger is
Even when it is positioned between the lifting lever 62 and the lifting lever 62, the upward sliding of the lifting lever 62 interlocked with the engagement of the locking claw 71 is released, so that finger jamming can be prevented.

The lifting lever 62 has a lever base 62.
0 is guided by the lever fitting portion 66 and becomes operable. Therefore, even if a force is applied in either direction of the both ends of the elevating lever 62 (particularly in front of the wagon body 20) during operation,
Smooth operation can be enabled. In addition, since the connecting bar 63 is also guided up and down by being guided by the guide groove 621 of the lever base 620 and the slide groove 67 of the housing 650, the lifting operation in the lifting member 60 can be performed smoothly.

The lifting lever 62 has two ends 62a, 6a.
Since 2a is gradually curved downward, even if a force is applied forward when gripping the elevating lever 62,
It becomes easy to continue holding.

In each of the above embodiments, the case where the lifting and lowering fitting 10 is applied to the wagon body 20 arranged beside the learning desk is shown. However, since the height can be adjusted freely, various types of kitchen wagons and the like can be used. Can be applied to wagons. Further, the present invention is applicable not only to wagons but also to those using a top plate such as a sleeve desk.

The guide member 50 and the elevating member 60 are
Although the structure in which the locking member 70 and the retaining piece 616 are provided on the elevating member 60 has been described, the guide member 50 may be provided with these components.
Various configurations can be adopted as long as the same effects as above can be obtained.

[0051]

As described above, the lifting / lowering metal fitting for the wagon top plate according to the present invention has a simple structure in which the locking member is locked in the locking hole against the vertical movement of the top plate. The height of the top plate can be maintained, the lifting work can be facilitated, the practicality can be improved, and the production cost of the lifting and lowering bracket can be increased by using the same structure as a pair on both side plates of the wagon body. Can also be reduced. In addition, as for the elevating lever for operating the elevating and retracting of the locking member, when the locking member is protruded and retracted without operating the elevating lever itself, the elevating lever is prevented from interlocking,
Even when a finger is positioned between the top plate and the elevating lever when the elevating member is lifted by gripping the top plate, it is possible to prevent finger jam due to the elevation of the elevating lever.

Further, by providing a guide member on the upper plate of the wagon body for guiding the lifting member up and down, even if the amount of protrusion of the lifting member from the upper end of the guide member increases, the guide member alone is not sufficient. In addition to preventing the vibration of the elevating member, this guide member is formed at a height at which the elevating lever can be gripped, so that it functions as a stopper that regulates the descent of the top plate. Also, it is possible to prevent the finger from being jammed during the lowering operation of the top board. The guide member also has the effect of hiding the processing portion of the wagon body when attaching the lifting / lowering bracket, and maintaining the appearance of the wagon body.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a lifting / lowering metal fitting for a wagon top plate according to the present invention.

FIG. 2 is an exploded perspective view showing a mounting state of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 to a wagon body.

FIG. 3 is an exploded perspective view showing each component of a lifting / lowering bracket of the wagon top plate of FIG. 1;

FIG. 4 is a perspective view illustrating attachment of a guide member of a lifting / lowering bracket of the wagon top plate of FIG. 1 to a wagon main body.

5 is an overall view showing the elevating operation of the elevating metal fitting of the wagon top plate of FIG. 1;

FIG. 6 is an explanatory view of a main part showing an elevating operation of an elevating metal fitting of the wagon top plate of FIG. 1;

FIG. 7 is an explanatory view of a relevant part showing a state in which a locking claw of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 is in contact with a locking hole.

FIG. 8 is an explanatory view of a main part showing a state in which a locking claw of a lifting / lowering metal fitting of the wagon top plate of FIG. 1 is immersed;

FIG. 9 is a cross-sectional view showing the locking operation of the retaining piece of the lifting bracket of the wagon top plate of FIG. 1 in the retaining hole.

FIG. 10 is a front view showing a state where the elevating metal fitting of the wagon top plate of FIG. 1 is attached to the wagon body.

FIG. 11 is an exploded perspective view showing components of another embodiment of a lifting / lowering metal fitting for a wagon top plate according to the present invention.

FIG. 12 is a longitudinal sectional view of a lifting / lowering metal fitting of the wagon top plate of FIG. 11;

13 is an explanatory view of a main part showing a relationship between an elevating operation of an elevating and lowering metal fitting of the wagon top plate of FIG. 11 and an elevating lever.

FIG. 14 is an overall perspective view showing a conventional example.

DESCRIPTION OF SYMBOLS 10 Lifting and lowering bracket (for wagon top plate) 20 Wagon body 24 Upper plate 25 Side plate 30 Top plate 50 Guide member 55 Locking hole 56 Detachment hole 60 Lifting member 61 Housing 616 Detachment stopper 62 Lifting lever 620 Lever base 621 Guide groove 622 Connection pin 63 Connection bar 630 Elongated hole 64, 64 'Elastic member 66 Lever insertion part 67 Slide groove 70 Locking member 71 Locking claw 710 Guide surface 72 Guide pin 73 Locking claw support member 80 Guide Element

Claims (10)

[Claims] 1. A guide member fixed vertically to a wagon body, a lifting member vertically mounted on a top plate having a top plate horizontally mounted thereon and vertically moving along the guide member. And a latch mechanism having a locking member for locking at an arbitrary position of the guide member. Between the guide member and the elevating member, a retaining hole is provided. A wagon top and bottom metal fitting provided with a pull-out prevention mechanism comprising a retaining piece for preventing the pull-out piece from being pulled out from the upper end of the member. 2. The wagon top according to claim 1, wherein the pull-out preventing mechanism has a retaining hole formed in the guide member, and the retaining piece is urged toward the lower end of the elevating member so as to be freely retractable. Plate lifting hardware. 3. The wagon top plate lifting and lowering bracket according to claim 1, wherein the latch mechanism is formed on a side surface of the guide member, and the pull-out prevention mechanism is formed on a bottom surface connecting the side surfaces of the guide member. . 4. A guide member fixed vertically to the wagon body, a top and bottom member mounted on the top in a horizontal direction and vertically moved along the guide member, and the lifting member is connected to the guide member. A lifting mechanism provided at the upper end of the elevating member and connected to the locking member to operate the locking member. Is a lifting / lowering metal fitting for a wagon top plate that is connected to the locking member so that the linking of the locking member with the protrusion / retreat of the lifting member is released when the lifting member is raised. 5. The wagon top according to claim 4, wherein the locking member and the elevating lever are connected by a vertically extending elongated hole and a connecting pin slidably assembled in the elongated hole. Plate lifting hardware. 6. The connecting member according to claim 5, wherein the locking member and the elevating lever are connected via a connecting bar extending in a vertical direction of the elevating member, and the elongated hole is formed at one end of the connecting bar. Lifting bracket for wagon top plate. 7. A wagon top plate elevating device according to claim 4, wherein said elevating lever moves up and down along a guide surface formed in an elevating member. 8. A guide member fixed vertically to the wagon main body, an elevating member having a top plate mounted on the upper end in a horizontal direction and vertically moving along the guide member, and the elevating member being connected to the guide member. And a latch mechanism having a locking member for locking at an arbitrary position of the wagon body. The upper plate of the wagon body guides the lifting and lowering of the lifting member and lowers the top plate at a height at which the lifting lever can be gripped. Of a wagon top plate on which a guide member that regulates the pressure is mounted. 9. The locking member comprises: a locking claw that protrudes and retracts in a horizontal direction and locks in a locking hole; and a connecting member that connects the locking claw and the elevating member. Between the connecting member, there is provided a guide elongated hole facing outward at the upper end, and a guide pin engaged with and assembled to the guide elongated hole, and the guide pin slides in the guide elongated hole. 9. The lifting and lowering bracket for a wagon top plate according to claim 1, 4 or 8, wherein the locking claw is movable in and out in a horizontal direction. 10. A wagon for a wagon according to claim 9, wherein a guide surface for abutting against a peripheral edge of said locking hole and guiding immersion in the horizontal direction is formed outwardly at a lower end of said locking claw. Top plate lifting hardware.