JPH07100445B2 - wagon - Google Patents

Description

TECHNICAL FIELD The present invention relates to a moving type wagon used in an office or the like.

[Prior Art] Conventionally, this type of wagon has left and right side plates and a rear plate as one unit.
The sheet metal material is integrally formed by pressing, and the bottom plate is provided between the lower edges of the left and right plates, and the top plate is installed between the upper edges.

[Problems to be Solved by the Invention] However, with such a configuration, it is necessary to press a large sheet metal material forming the left and right side plates and the rear plate. There is no choice but to enlarge the size of the manufacturing equipment.

Moreover, in recent offices, with the development of OA, in addition to the standard width wagon as usual, it is rare that a wagon with a different width suitable for storing special paper such as computer paper is required. Absent. However, when it is attempted to manufacture a wagon of a conventional type and having different widths, it is necessary to prepare a large mold for integrally molding the left and right side plates and the rear plate for each specification. In other words, wagons with different width specifications have completely different components not only on the top plate and bottom plate but also on the side plates and rear plate, so it is necessary to manufacture them on completely independent manufacturing lines, which is uneconomical. It's a problem.

The present invention aims to solve such problems.

[Means for Solving the Problems] The present invention adopts the following configurations in order to achieve the above objects.

That is, the wagon according to the present invention comprises a horizontal frame-shaped base having casters, left and right side plates mounted on the base, and a side plate which is formed separately from the side plate and between the rear edges of the side plates. The rear plate is provided, and the top plate mounted on the rear plate and the side plate is provided, and the top plate has a hanging portion that hangs below the upper surface of the side plate at the front edge portion thereof. It is characterized in that the hanging part is fixed in a state of being in contact with the front surface of the side plate.

In order to improve the rigidity of the base without impairing the stability of support by the casters, the base should be connected to the left and right side frame members,
The horizontal frame members before and after being installed between the side frame members are provided, and casters are attached to the left and right end portions of each of the horizontal frame members, and the inner edges of the side frame members are mounted. In addition, it is preferable to form a recess for avoiding interference with the wheels of the caster.

In order to easily and firmly attach the side plate to the base, the front end portion and the rear end portion of the base are rigidly provided with tubular portions that open upward, and the lower end portion and the rear edge structure of the front edge structural member of the side plate are attached. It is preferable that the lower end portion of the member is inserted into and fixed to each of the cylindrical portions.

To simplify the installation of the back plate, to the left of the back plate,
The right and left edges may be held by the left and right side plates via the concave and convex engaging portions.

When the top plate is made of synthetic resin, it is preferable that the upper ends of the left and right side plates are rigidly connected to each other by the front and rear cross rails, and the top board is attached to these cross rails.

In order to quickly and easily attach / detach the top plate in a comfortable posture, the back side of the top plate is supported by the rear crosspiece through the concave-convex engagement portion, and the front side of the top plate is attached by using bolts. It is better to fix it to the front cross rail.

In the case where the wagon is arranged under a top plate that is cantilevered on the wall surface through an inverted L-shaped bracket, the top plate is provided to prevent the collision between the wagon and the bracket as much as possible. It is desirable to provide an inclined surface portion that gradually lowers rearward at the rear edge portion of the upper surface of the above, or to extend the rear end portion of the base rearward of the rear plate.

[Operation] With such a configuration, the left and right side plates and the rear plate can be separately manufactured and combined in the assembly process. Therefore, a large die for molding a large sheet metal material to integrally form the side plate and the rear plate becomes unnecessary.

In addition, even between wagons with different width dimensions, the left and right side plates can be used in common, and the problem of having to separately prepare a large mold for each specification with different width dimensions is reliably eliminated. be able to.

Further, in this way, since the whole wagon can be constituted by only relatively flat parts, a large space is not required for handling and storing the parts on a line other than the final assembly step.

In addition, the top plate has a hanging portion whose front edge portion hangs below the upper surface of the side plate. Therefore, by bringing the hanging portion into contact with the front surface of the side plate, the top plate moves backward. Will be banned. That is, in the assembly process, the left and right side plates and the rear plate are assembled to the base, the top plate is placed on the upper surface of the side plate from the front side, and when the hanging part is moved to the position where the hanging part contacts the front side of the side plate, the position is changed. It is the position to fix the top plate. Therefore, the top plate can be positioned easily and quickly as compared with the case where the positioning can be performed only by the rear plate.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

As shown in FIGS. 1 to 4, this wagon has a horizontal frame-shaped base 1 having casters 2, left and right side plates 3 mounted on the base 1, and the side plate 3. A rear plate 4 which is constructed separately and is arranged between the rear edges of the side plate 3 and a top plate 5 mounted on the rear plate 4 and the side plate 3 are provided.

As shown in FIGS. 1 and 5, the base 1 includes left and right side frame members 11 and front and rear horizontal frame members installed between the side frame members 11.
12 and 13, and the left of each of the horizontal members 12, 13,
Casters 2 are attached near the right ends. More specifically, the left and right side frame members 11 include an upper piece 11a, a side piece 11b, and a lower piece 11c.
It is a channel-shaped member provided with and opened inward. The front and rear horizontal members 12, 13 are channel-shaped members that open downward, and both ends of the horizontal members 12, 13 are upper pieces of the side frame member 11.
It is firmly attached to the lower surface of 11a by welding or the like. In addition, side frame material 1
A front frame member 14 having a cutout portion 14a in the middle is provided between the front ends of 1, and a rear frame member 15 is provided between the rear ends of the side frame members 11. The caster 2 is provided with a turning leg 22 rotatably provided on a lower surface of a base body 21, and a wheel 23 is pivotally attached to the turning leg 22.
The base 21 is attached to the horizontal members 12, 13 by bolts 24 near both ends.
It is attached using. Lower pieces on the left and right side frame members 11
A trapezoidal recess 11d is formed in 11c to prevent the wheels 23 of the caster 2 from colliding with the side frame member 11. The caster 2 having a large diameter is placed as close to the side edges as possible. I am trying to attach it. A cylindrical portion 16 that opens upward is rigidly provided at the front end portion and the rear end portion of both side frame members 11. That is, as shown in FIGS. 6 and 7, the upper piece 11 of the side frame member 11
An opening 11e is provided in a, and the cylindrical portion 16 continuous with the opening 11e is fixed to the lower surface of the upper piece 11a and the inner surface of the side piece 11b by welding. The cylinder portion 16 is provided with a bolt insertion hole 16a, and the lower end portion 31a of the front edge structural member 31 and the lower end portion 32a of the rear edge structural member 32 of the side plate 3 are inserted into and fixed to the respective cylindrical portions 16. ing.

As shown in FIG. 1, the side plate 3 includes a front bent piece 33 and a rear bent piece.
34, an upper bending piece 35 and a lower bending piece 36 are made of sheet metal integrally, and a leading edge structural member 31 forming a columnar reinforcing structure, and an intermediate structural member 37 on the inner surface thereof. , Rear edge structural member 32
And are attached by welding. Lower end of front edge structural member 31
31a and the lower end 32a of the trailing edge structural member 32 are respectively screw holes.
It is composed of a thick channel material having 31b and 32b, and the lower end portions 31a and 32a are inserted into the cylindrical portion 16 of the base 1 as shown in FIGS. 6 and 7. There is. Until the lower bent piece 36 of the side plate 3 abuts on the base 1,
In a state where the lower end portions 31a and 32a are inserted into the tubular portion 16, the bolt insertion hole 16a of the tubular portion 16 is set to match the screw holes 31b and 32b, and the bolt insertion hole 16a is inserted. The side plate 3 can be attached to the base 1 by screwing the bolts 38 into the screw holes 31b and 32b and tightening them. The left and right side plates 3 are used as the base 1
Prior to the attachment, the rear plate 4 is arranged between the rear edges of the both side plates 3 and the upper edges are rigidly fixed by the front and rear cross rails 6, 7.

As shown in FIG. 1, the rear plate 4 is made of sheet metal integrally including left and right bent pieces 41 and upper and lower bent pieces 42 and 43. The bent piece 41 is held by the rear bent piece 34 of the side plate 3 via the uneven engaging portion 44. The concavo-convex engaging portion 44 is, for example, adapted to engage the pin 44a protruding from the rear plate 4 with the engaging hole 44b formed in the inner surface of the side plate 3.

As shown in FIGS. 1 and 8, the front and rear cross rails 6 and 7 are in the shape of a rectangular pipe, and the front edge structural member of the side plate 3 is formed.
The bolts 61 and 71 are used to fix the mounting arms 31c and 32c projecting from the respective upper ends of the 31 and the trailing edge structural member 32.

The top plate 5 is made of synthetic resin, and as shown in FIG.
The rear side is held by the rear horizontal rail 7 via the concave-convex engaging portion 51, and the front side is fixed to the front horizontal rail 6 by the bolt 52. The concavo-convex engaging portion 51 is the front piece 72 of the rear horizontal rail 7.
And a tongue piece 54 protruding from the rear edge of the mounting plate 53 attached to the lower surface of the top plate 5,
The tongue piece 54 is adapted to engage with the slit 73. On the other hand, the bolt 52 is inserted into the front horizontal rail 6 through the opening 63 provided in the lower piece 62 of the front horizontal rail 6, and the upper piece 64 of the front horizontal rail 6 is inserted.
It is adapted to be screwed into an insert nut 55 embedded in the top plate 5 through a bolt insertion hole 65 provided in the. At the front edge portion of the top plate 5, there is provided a hanging portion 56 that hangs down below the upper surface 3j of the side plate 3, and a front hook portion 57 is provided at the hanging portion and a front hook portion 57 thereof. A top handle portion 58 is formed on the top surface of the top plate 5 so as to be close to. At the time of assembly, the top plate 5 is placed on the upper surfaces of the right and left side plates 3 fixed to the base 1 and the upper piece 64 of the front horizontal rail 6, and the hanging portion 56 of the top plate 5 is placed.
Until it comes into contact with the front bending piece 33 forming the front surface of the side plate 3,
The top plate 5 is moved backward. When the hanging part 56 comes into contact with the front bent piece 33, the top plate 5 stops at the mounting position with the tongue piece 54 engaged with the slit 73. Such a top plate 5
An inclined surface portion 59 that gradually lowers rearward is provided at the rear edge portion of the upper surface of the.

The drawers 8 and 9 arranged below the top plate 5 are supported by the left and right side plates 3 via a support rail 81 and a suspension rail mechanism 91. An auxiliary wheel 93 is pivotally mounted on the lower surface of the bottommost drawer 9 through a bracket 92.
When the drawer 9 is closed, the bracket 92 and the auxiliary wheel 93 are stored in the cutout portion 14a of the base 1.

With such a structure, the left and right side plates 3 and the rear plate 4 can be separately manufactured and combined in the assembly process. Therefore, a large die for molding a large sheet metal material to integrally form the side plate and the rear plate becomes unnecessary. That is, the side plate 3 and the rear plate 4 can be separately manufactured by using a relatively small mold.

As a result, it is possible to significantly reduce the size of machines such as a press molding machine that drives the die, and it is possible to reduce the size of the manufacturing facility as a whole.

In addition, since the left and right side plates 3 can be commonly used between wagons having different width dimensions, it is possible to reliably eliminate the problem that a large mold must be prepared for each specification having different width dimensions. can do. That is, in the conventional one, it is necessary to prepare a large mold for integrally press-molding the side plate and the rear plate for each specification, and a high-output press molding machine capable of driving the mold. However, according to the present invention, instead, it suffices to prepare only relatively small molds for press-molding the rear plate 4 for the types, and the side plate 3 can be manufactured using a common mold. it can.

Furthermore, in this way, the entire wagon can be configured with only relatively flat parts, which facilitates the stacking of the parts and provides a large space for handling and storing the parts on a line other than the final assembly process. There is no need for.

Therefore, wagons having different widths can be efficiently manufactured with the minimum equipment.

In addition, in this wagon, the base 1 has an independent structure, and the casters 2 are attached to the base 1. Therefore, if the base 1 is made to have high rigidity, it will pass through the step. Even when a large force acts on the caster 2 at the time of occurrence, the side plate 3, the rear plate 4, etc. are not adversely affected and the overall distortion is not caused. Therefore, according to the present invention, it is possible to provide a sturdy and highly durable wagon without making the side plate 3 and the rear plate 4 heavy and thick.

In addition, if the base is made independent of the side plate and the rear plate, for example, as shown in FIG.
It is also possible to extend the rear side of the outer surface of the rear plate 4. If the rear end portion 1a of the base 1 is extended rearward, the extended portion can also serve as a bumper. Therefore, as shown in FIG. 9, even when the wagon A is arranged below the top plate c which is cantilevered by the wall surface b via the inverted L-shaped bracket a, the base 1 is not attached to the wall surface. Since the wagon A is brought into contact with b to prevent further intrusion of the wagon A, it is possible to solve the problem that the top plate 5 of the wagon A collides with the bracket a and is damaged. Further, if the inclined surface portion 59 is provided at the rear edge of the top surface of the top plate 5, the wagon A can be inserted as far as possible without causing the top plate 5 to collide with the bracket a. it can. Therefore, if the rear end portion 1a of the base 1 is extended rearward by a required size after providing such an inclined surface portion 5, the wagon A can be sufficiently inserted under the top plate c. Further, it becomes possible to effectively prevent the top plate 5 of the wagon A from coming into contact with the bracket a and being damaged.

[Advantages of the Invention] Since the present invention has the above-described configuration, a large press die can be dispensed with, and various widths can be assembled using a common side plate. Therefore, it is possible to obtain an effect that various wagons having different width dimensions can be efficiently manufactured with the minimum equipment.

Further, since all the constituent parts can be made relatively flat, it becomes easy to handle and store the constituent parts in the manufacturing line other than the final assembly process. Therefore, also from this point, it is possible to effectively suppress the large-scale production facility.

In addition, in the assembly process, the left and right side plates and the rear plate are assembled to the base, the top plate is placed on the upper surface of the side plate from the front side, and when the hanging part is moved to the position where the hanging part contacts the front surface of the side plate, the position Since the position where the top plate is fixed is, the positioning of the top plate can be performed easily and quickly as compared with the case where the positioning can be performed only by the rear plate.

Furthermore, since the base has a horizontal frame shape to form an original structure, even if a large force acts on the caster, the load can be received by the base. Therefore, even if the place having a step is moved violently, it is possible to effectively prevent the side plate and the rear plate from being subjected to an unreasonable force. Therefore, it becomes possible to dramatically improve the durability without causing a significant increase in weight due to the thickening of the side plate and the rear plate.

In addition, when the base is provided with left and right side frame members and front and rear horizontal frame members installed between the side frame members,
Since the frame structure is formed, the rigidity of the base can be reasonably improved. Moreover, if casters are mounted near the left and right ends of each of the horizontal members and a recess is formed on the inner edge of the side frame member to avoid interference with the wheels of the caster, the frame will be formed. It becomes possible to arrange casters having large-diameter wheels in the structure as close to the side edge as possible. Therefore, the base can be made strong and the stability of the support by the casters can be made good.

By rigidly installing a tubular portion that opens upward on the base, and inserting the lower end portion of the leading edge structural member and the lower end portion of the trailing edge structural member of the side plate into each of these tubular portions to secure them. The side plate can be reliably erected on the base simply by inserting the lower end portion of the side plate into the tubular portion from above and performing a fixed fastening operation. Therefore, the assembly work can be performed quickly and reliably.

If the left and right side edges of the rear plate are held by the left and right side plates through the concave and convex engaging portions, the mounting of the rear plate can be simplified.

If the upper ends of the left and right side plates are rigidly connected by the horizontal bars arranged in front and behind, and the top plate is attached to these horizontal bars, the top plate will serve as a structural material to secure the rigidity of the entire wagon. Since it is not necessary to play the role of the above, it becomes easy to form the top plate from synthetic resin.

If the rear side of the top plate is supported by the rear cross rail via the concave-convex engaging portion and the front side of the top plate is fixed to the front cross rail using bolts, it is possible to use only the part near the front end where it is easy to reach. Since it is sufficient to perform the screw fastening work, the top plate can be quickly attached and detached in a comfortable posture.

By providing an inclined surface part that gradually lowers rearward at the top edge of the top plate, or by extending the rear end part of the base rearward of the rear plate, the wall surface is inserted through the inverted L-shaped bracket. When the wagon is arranged under the cantilever-supported top plate, the collision between the wagon and the bracket can be effectively prevented or suppressed. Therefore, the problem that the top plate of the wagon is easily scratched by the bracket can be solved.

[Brief description of drawings]

1 to 8 show an embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view, FIG. 3 is a side view, and FIG.
The figure is a front view, FIG. 5 is a bottom view, FIG. 6 is a side sectional view of a cylindrical portion, FIG. 7 is a sectional view taken along line VII-VII in FIG.
The drawing is a partial side sectional view showing a top plate mounting portion. FIG. 9 is a schematic side view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Base, 2 ... Casters 3 ... Side plate, 4 ... Rear plate 5 ... Top plate, 6 ... Front horizontal beam 7 ... Rear horizontal beam, 11 ... Side frame member 12 ... Front horizontal member, 13 ... Rear horizontal member 16 ... Cylindrical part, 31 ... Leading edge structural member 32 ... Rear edge structural member, 44 ... Uneven engaging part 51 ... Uneven engaging part, 52 ... Bolt 59 ... Inclined surface part

Claims (8)

[Claims] 1. A horizontal frame-shaped base having casters, left and right side plates mounted on the base, and separate side plates, which are arranged between the rear edges of the side plates. And a top plate mounted on the rear plate and the side plate. The top plate has a hanging portion at a front edge portion thereof which is lower than an upper surface of the side plate. A wagon characterized in that the hanging part is fixed in a state of abutting against the front surface of the side plate. 2. A base is provided with left and right side frame members and front and rear horizontal frame members installed between the side frame members, and the left and right ends of the respective horizontal frame members are near each other. The wagon according to claim 1, wherein a caster is mounted on the portion, and a concave portion is formed on an inner edge of the side frame member to avoid interference with a wheel of the caster. 3. A base is provided with a cylindrical portion that opens upward, and the lower end portion of the front edge structural member and the lower end portion of the rear edge structural member of the side plate are inserted into and fixed to the respective cylindrical portions. The wagon according to claim 1 or 2, characterized in that 4. The wagon according to claim 1, wherein the left and right side edges of the rear plate are held by the left and right side plates via concave and convex engaging portions. 5. The left and right side plates are rigidly connected to each other at their upper ends by cross rails arranged front and rear, and top plates are attached to these cross rails. Wagon described in 4. 6. The rear side of the top plate is supported by the rear cross rail via the concave-convex engagement portion, and the front side of the top plate is fixed to the front cross rail using bolts. Wagon according to item 5. 7. The wagon according to claim 1, wherein an inclined surface portion that gradually lowers rearward is provided at a rear edge portion of the top surface of the top plate. 8. The wagon according to claim 1, wherein a rear end portion of the base extends rearward of the rear plate.