JPS6219236Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a telescoping wagon whose top plate can be slid and extended when desired.

Conventional wagons with an expandable upper surface are either equipped with an auxiliary top plate that can protrude and retract from one end of the wagon, or are equipped with an auxiliary top plate on one end of the wagon that can be rotated upwards to a horizontal position, and an auxiliary top plate that can be rotated upwards to a horizontal position. It had a rotatable support arm that supported the plate from below. However, since the wagon becomes unstable when both auxiliary top plates are extended, it is not possible to extend the wagons for a long time, and it is necessary to prevent large forces from being applied, which makes them inconvenient to use.

In view of these problems, the present invention aims to provide a telescopic wagon that can be extended for a long time and has excellent stability.

For this reason, the present invention arranges a top plate on the wagon body that can slide along the top surface and extend to the side of one end of the wagon body, and connects the bottom end of the wagon body from one end of the top plate in the extending direction. The wagon can be extended by extending a support frame whose lower end extends to the same height position, attaching casters to the wagon body and the lower end of the support frame, and extending the top plate. By supporting both ends with the frame and the wagon body, an extremely stable telescopic wagon is provided even in the extended state. In a preferred embodiment, the sliding guide means for the top plate not only includes engaging portions that engage with a pair of first guide grooves formed in the wagon body on both sides near the other end of the top plate. , by protruding an engaging pin at the middle position in the width direction of one end of the wagon body, and providing a second guide groove in which this engaging pin engages on the back surface of the top plate, three points arranged in a triangular shape are formed. To provide a top plate configured to slide and guide a top plate so that it can be smoothly expanded and contracted.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Reference numeral 1 designates a top plate of the wagon, which is disposed on the wagon body 2 so that it can extend and slide toward the side at one end along the upper surface of the wagon body 2. From one end 1a of the top plate 1 in the extending direction, the wagon body 2 A support frame 3 is extended, the lower end of which extends to the same height as the lower end of the support frame 3. 4 is a caster attached to the lower end of the wagon body 2, and 5 is a caster attached to the lower end of the support frame 3.
The wagon main body 2 has side frames 6a, 6 at both ends in the longitudinal direction.
b, upper connecting rods 7, 7 that connect the upper ends of both sides of the side frames 6a, 6b, and lower connecting rods 8, 8 that connect the lower ends of both sides of the side frames 6a, 6b. Each side frame 6a, 6b has a pair of supports 9, respectively.
It is composed of an upper frame plate 10 and a lower frame plate 11 that respectively connect the upper and lower parts between the support columns 9 and 9. A blind plate 12 is stretched over the interior space of the side frame 6a at one end of the wagon body 2, and a wire mesh 13 for hanging cooking utensils and the like is stretched over the interior space of the other side frame 6b. In the space surrounded by the upper connecting rod 7 and the upper frame plate 10 on the upper part of the wagon body 2, a partition plate 14 is stretched with a slight space 15 at the upper part, and a guide formed on the upper frame plate 10 is provided below the partition plate 14. A drawer 16 is provided which is guided and supported by the groove 10a. 1
7 is a protrusion 1 protruding from the inner surface of the middle part of the support 9;
A shelf board 19 is placed and supported on 8, a bottom support plate 19 is stretched in a space surrounded by the lower connecting rod 8 and the lower frame plate 11, and 20 is a back plate. Each of the upper connecting rods 7
A first guide groove 2 is provided on the inner surface facing the space 15.
1 is formed over the entire length of the top plate 1, and a pair of engaging portions 22 that slidably engage with the first guide groove 21 are provided on the lower surfaces of both sides near the other end 1b of the top plate 1. ing. Further, on the upper frame plate 10 of the side frame 6a on one end side of the wagon main body 5, an engaging pin 23 is provided protruding from the upper end at the center position in the width direction of the wagon main body 5, and this engaging pin 23 slides on the back surface of the top plate 1. A second guide groove 24 that is movably engaged is formed. The support frame 3 consists of a mounting rod 25 attached to the back surface of one end of the top plate 1, columns 26 on both sides, and a connecting rod 27 connecting the lower parts of the columns 26, and a connecting rod 27 connecting the middle portions of the columns 26. A wire mesh 29 is stretched in a space surrounded by the support 28, the support 26, and the connecting rod 27.

In the above configuration, when using it as a compact wagon, by overlapping the top plate 1 on the top surface of the wagon main body 2 and making the support frame 3 contact the side frame 6a, a compact wagon with the top plate 1 as the top surface can be used. A wagon is obtained, and this wagon is movable by casters 4 and 5. Next, if you want to make use of the top surface of the wagon, you can extend the top plate 1 to the side of one end of the wagon, so that the top plate 1 is located on the side of the wagon body 2, and the top plate 1 can be used as a table or a table. It can be used as a stand, and the top of the partition plate 14 on the top of the wagon main body 5 can be used as a mounting surface for instruments, nearly doubling the usable area. Further, since a completely open space is formed below the extended top plate 1, by arranging a chair or the like, the space can be used as a desk or table for people to sit and work or eat.
Moreover, since one end of the top plate 1 is supported by the support frame 3, it is stable, and when the top plate is extended or contracted,
Engagement between the pair of first guide grooves 21 and the engagement portion 22;
Due to the engagement of the second guide groove 24 and the engagement pin 23, the top plate 1 is slidably guided at three points located at the vertices of the triangle, so that it can smoothly extend and contract.

According to the telescopic wagon of the present invention, as is clear from the above explanation, by extending the top plate, the wagon can be easily extended to obtain a wide usable area, and one end of the top plate is supported. Since it is supported by a frame, it is extremely stable, and casters are also provided at the lower end of this support frame, making it easy to extend and move the wagon. Since a completely open space is formed below the extended top plate, there is no obstruction when placing a chair or the like to sit, making it very convenient to use.

Furthermore, the top plate is positioned at the apex of the triangle due to the engagement between the pair of first guide grooves and the engagement portion and the engagement between the second guide groove and the engagement pin when the top plate is extended and contracted. Since the sliding movement is guided by three points, the top plate can be expanded and contracted extremely smoothly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a vertical front view, FIG. 2 is a vertical side view, and FIG. 3 is a plan view. 1 is the top plate, 2 is the wagon body, 3 is the support frame, 4,
5 is a caster, 6a and 6b are side frames, 7 is an upper connecting rod, 10 is an upper frame plate, 14 is a partition plate, 15 is a space, 21 is a first guide groove, 22 is an engaging part, and 23 is an engagement The pin 24 is a second guide groove.

Claims (1)

[Scope of utility model registration request] A top plate that can slide along the top surface of the wagon body and extend to the side of one end of the wagon body is arranged,
A support frame whose lower end extends from one end in the extending direction of the top plate to a position at the same height as the lower end of the wagon body, and casters are attached to the lower ends of the wagon body and the support frame, and the other end of the top plate An engaging portion that engages with a pair of first guide grooves formed in the wagon body is provided on both sides of the vicinity, and an engaging pin is provided protrudingly at an intermediate position in the width direction of one end of the wagon body. A telescoping wagon characterized by providing a second guide groove that engages with an engagement pin.