JP6025086B1 - Trolley - Google Patents

Abstract

The present invention provides a cart that is lightweight and has excellent load resistance and strength, a corner member for a cart that can securely connect a frame material, and a connection structure that can firmly connect two or more members. A carriage having wheels under a square frame, and a metal frame member 4 and an aluminum frame member 4 connected to a metal corner member 3 to form a square frame, thereby improving load resistance and strength. It is a truck that is secured and lightened. Bolts 30 and 34 and screw-type stoppers were used to connect the corner member 3 and the frame member 4, and the bolts 30 were double-tightened with the stoppers. The cart corner member 3 includes connecting protrusions 7 extending in two directions at right angles or almost right angles, and each connecting protrusion 7 can be fitted to the frame material 4 and a through hole into which a bolt can be inserted into the side surface of each connecting protrusion 7. And a screw-type stopper. The connection protrusion 7 and the pipe support portion 6 are made of a metal material. [Selection] Figure 3

Description

The present invention also relates to the base car for luggage transport.

  There are various types of carts for carrying goods. Since conventional trolleys are made of metal such as iron and steel, they are excellent in load resistance and strength, but have a drawback of being heavy. Cars are not only loaded and transported, but also can be carried empty by workers, so they are difficult to carry when they are heavy. Recently, there are aluminum carts for weight reduction, but aluminum carts have drawbacks in terms of load resistance and strength.

  Conventionally, there is also a cart in which the corner member of the frame and the frame are made of different materials (Patent Document 1). That is, the corner member of the frame is made of aluminum.

JP 2010-159054 A

Solving problems of the present invention is lightweight, load bearing, excellent strength, iron, metal material such as steel (hereinafter, referred to as "metal material") and an aluminum material, a metal material and a metal material, aluminum material and aluminum material An object of the present invention is to provide a cart having a frame material and a cart corner member that are securely coupled by a coupling structure capable of firmly coupling two or more materials.

  The cart of the present invention is a cart provided with wheels (including casters) under a square frame, and is formed by connecting aluminum frame material to four metal corner members to form a square frame. The load and strength are ensured and the weight is reduced. Also, bolts and screw type fasteners, for example, nuts, are used to connect the corner members and the frame material, and the bolts are double-tightened with the nuts to strengthen the connection between the corner members and the frame material. .

Carriage for corner member in the present gun are those which can be assembled rectangular frame connecting the frame member, a connecting protrusion extending at a right angle or approximately a right angle in two directions, two directions each frame of the coupling projections It can be fitted with a material, and is provided with a through hole and a screw-type stopper capable of inserting a bolt on the side surface of each connecting projection. The two-way connecting projection may be provided so as to project at a right angle or almost at a right angle in two directions from a pipe support portion capable of inserting the pipe in the vertical direction. The connection protrusion and the pipe support are made of a metal material.

Member connecting structure in the present gun is a connection structure of two members fitted inside and outside, screwed into the stop of the screw-type which is plugged into one of the members a bolt is fixed to the other member The two members are connected, the tip of the bolt protrudes from the stopper and protrudes to the outside of the other member outside the stopper, and a nut extends from the other member to the tip of the bolt. It is a connecting structure in which the two members are connected by screwing and tightening the nut.

The cart of the present invention has the following effects.
(1) Since a corner member made of a metal material and an aluminum frame material are connected and assembled into a rectangular frame, the load resistance and strength are excellent, and the weight is reduced.
(2) The connection between the corner material and the frame material is strong because it is a double connection between the screwing of the bolt into the screw-type stopper and the tightening of the nut screwed into the bolt.

Carriage for corner member in the present gun has the following effects.
(1) Since it is made of a metal material, it has excellent load resistance and strength.
(2) Since the connection protrusions are provided in two directions at right angles or almost right angles, a rectangular frame can be assembled simply by connecting the frame material to the connection protrusions, and the assembly is easy.
(3) Since there is a pipe support part that can insert the pipe into the corner member, the pipe is inserted into the pipe support part to be used as a handle for the carriage, or as a support column for preventing the load collapsed on the carriage. can do.

Member connecting structure in the present gun will double rigid connection structure since the connection of the bolt screwed in the two members to stop threaded, the tightening of a nut screwed on the bolt.

The perspective view which shows an example of the trolley | bogie of this invention. The disassembled perspective view of the corner member and frame material of the trolley | bogie of this invention. The assembly perspective view of the corner member and frame material of the trolley | bogie of this invention. (A) is sectional drawing of the connection structure of the corner material part of FIG. 3, and the side plate of a frame material, (b) is sectional drawing of the connection structure of the corner member of FIG. 3, and the bottom plate of a frame material. Plan view of a bogie for a corner member in the gun. Be another example of the carriage for the corner member in the present gun, a plan view of a case where the pipe support portion on the corner pipes. A corner member for carriage of the gun, without pipe support part, plan view of a case where the welded butt coupling protrusions each other two at right angles.

(Embodiment 1)
[Cart]
An example of the carriage of the present invention will be described with reference to the drawings. As an example, the cart shown in FIG. 1 is a cart provided with wheels 2 under a rectangular frame 1. The frame 1 is formed in a square shape by four corner members 3 and four frame members 4 connected between the corner members 3. In FIG. 1, A is a crosspiece, and B is a floorboard pasted on the crosspiece A.

[Corner]
The corner member 3 includes an outer plate 5, a cylindrical pipe support 6 (FIG. 2) provided on the inner side of the outer plate 5, and two parts provided on both sides of the pipe support 6 inside the outer plate 5. A connecting projection 7 is provided.

[Outer plate]
The outer plate 5 is a plate made of a metal material, and is bent at a right angle or substantially a right angle ("<"> shape or substantially "<" shape) in a plan view (FIG. 5), and is provided with wing pieces 8 on both sides of the bent portion. It is formed in a substantially T shape in a side view (FIG. 1).

[Pipe support part]
As shown in FIGS. 2 and 5, the pipe support portion 6 is fixed by welding with a support member 9 made of a metal material having a substantially “<” shape in plan view against the inside of the curved portion of the outer plate 5. It is formed in a vertical cylindrical shape with an upper opening. A bottom plate 10 (FIG. 3) is provided on the bottom surface of the pipe support portion 6 so that the pipe 11 (FIG. 1) inserted in the vertical direction from the upper surface opening of the pipe support portion 6 is supported.

[Connecting protrusion]
The connecting protrusion 7 is made of a metal material having a “U” shape in a side view, and is fixed by welding with one end surface 13 (FIG. 2) in the longitudinal direction thereof being in contact with both side surfaces of the support member 9. In this case, a gap 15 (FIGS. 3 and 5) is formed between the inner surface of the blade piece 8 and the connecting projection 7 so that the side plate 24 outside the rectangular tube-shaped frame member 4 can be fitted into the gap 15. It is.

  Four through holes 18 are opened in the back wall 17 of the connecting projection 7. These through holes 18 are opened on the same axis as the four through holes 19 of the blade 8. A screw-type stopper (for example, nut: back wall nut) 20 is fixed to the inner side of the through-hole 18 in the rear wall 17 by welding.

  One through hole 22 is opened in the bottom plate 21 of the connecting projection 7. A screw-type stopper (for example, nut: bottom nut) 23 is fixed to the inside of the through hole 22 by welding. The stopper 23 may be other than a nut as long as a bolt can be screwed in.

[Frame material]
The frame material 4 is an aluminum square tube. Through holes 25 are opened at four locations of the opposing side plates 24 of the frame material 4. One through hole 27 is opened in the bottom plate 26 of the frame material 4.

[Attaching frame material to corner members]
In order to attach the frame material 4 to the connection protrusion 7 of the corner member 3, the rectangular tube-shaped frame material 4 is put on the connection protrusion 7 and fitted. In this case, the side plate 24 of the frame material 4 is inserted into the gap 15 between the blade piece 8 and the connecting projection 7. Further, as shown in FIG. 3, the bolt 30 is inserted into the through hole 25 of the frame member 4 from the through hole 19 of the blade piece 8, and the tip 31 (FIG. 4A) of the bolt 30 is inserted into the back wall of the connecting projection 7. It is screwed into the nut 20 and protrudes to the outside of the side plate 24 of the frame material 4. A washer 32 is put on the front end portion 31 of the bolt 30 from the outside of the side plate 24 of the frame material 4, and a nut 33 is screwed to tighten the bolt 30. The frame material 4 is connected and fixed to the connection protrusion 7 of the corner member 3 by double tightening of this tightening and screwing of the bolt 30 into the back wall nut 20.

  Further, a bolt 34 (FIG. 4B) with a washer 35 inserted from outside the bottom plate 26 of the frame material 4 is inserted and screwed into a stopper (bottom nut) 23 fixed to the bottom plate 21 of the connecting projection 7. The frame material 4 is also fixed to the bottom plate 21 of the connecting projection 7. By this fixing and the fixing by the bolt 30, the back wall nut 20, and the nut 33, the five portions of the frame material 4 are fixed to the connection protrusion 7.

  The round pipe 11 shown in FIG. 1 can be used as a handle when the carriage is moved, and can be used for positioning a load loaded on the carriage and preventing collapse of the load. The wheel 2 in FIG. 1 can be the same as or different from the wheel used in the existing carriage.

  The above-described embodiment is merely an example of the present invention. The shape, structure, etc. of each member may be other shapes, structures, connections, etc. as long as the object of the present invention can be achieved.

(Embodiment 2)
Carriage for corner member in the present gun can also be configured as shown in FIG. In FIG. 6, a square bar is used in the vertical direction as the pipe support portion 6, and the ends of the outer plate 5 are fixed to the side surfaces of the square bar in two directions by welding. The character-shaped connecting projections 7 may be abutted and fixed by welding. Similarly to FIG. 3, the frame material 4 having a rectangular tube shape is put on the outer periphery of each connection projection 7, and the bolt 30 is placed in the order of the outer plate 5-one side plate 24 of the frame material 4 -the connection projection 7 -the back wall nut 20. Then, the front end portion 31 of the bolt 30 is protruded to the outside of the other side plate 24 of the frame member 4, the washer 32 is put on the front end portion 31 of the bolt 30, the nut 33 is screwed and tightened, and the connection protrusion The frame material 4 can be connected to 7. Further, a bolt 34 with a washer 35 is inserted from the outside of the bottom plate 26 of the frame material 4 and screwed into a bottom nut 23 fixed to the bottom plate 21 of the connection protrusion 7, so that the frame material 4 is attached to the bottom plate 21 of the connection protrusion 7. It can also be fixed to. The outer plate 5 can be omitted if possible.

(Embodiment 3)
Carriage for corner member in the present gun can also be configured as shown in FIG. In FIG. 7, the pipe support portion 6 shown in FIG. 1 is not provided, and two “U” -shaped connection members 12 are prepared in the same manner as the connection member 12 shown in FIG. It can be fixed by contact welding, and the other connecting projection 7 can be brought into contact with the side surface of the connecting projection 7 and fixed by welding. In this case, the frame material 4 having a rectangular tube shape is put on the outer periphery of each connection protrusion 7, and the bolt 30 is inserted in the order of the outer plate 5-one side plate 24 of the frame material 4 -the connection protrusion 7 -the back wall nut 20. Then, the front end portion 31 of the bolt 30 is projected to the outside of the other side plate 24 of the frame member 4, the washer 32 is put on the front end portion 31 of the bolt 30, the nut 33 is screwed and tightened, and the connection projection 7 is attached. The frame material 4 can be connected. Further, a bolt 34 with a washer 35 is inserted from the outside of the bottom plate 26 of the frame material 4 and screwed into a bottom nut 23 fixed to the bottom plate 21 of the connection protrusion 7, so that the frame material 4 is attached to the bottom plate 21 of the connection protrusion 7. It can also be fixed to.

Wherein the coupling structure is an example in connecting the frame member 4 and the corner member 3 of the carriage, it said member connecting structure can also be used for linking the other member.

DESCRIPTION OF SYMBOLS 1 Frame 2 Wheel 3 Corner member 4 Frame material 5 Outer plate 6 (Corner member) 6 Pipe support part 7 Connection protrusion 8 Wing piece 9 Support member 10 Bottom plate 11 Pipe 13 End surface 14 (Connection protrusion) Inner surface 15 Clearance 17 Back wall 18 (back wall) through hole 19 Back wall hole 19 Wing piece through hole 20 Back wall stopper (back wall nut)
21 (bottom plate of the connecting projection) 22 through hole (bottom plate of the connecting projection) 23 (bottom plate) stopper (bottom nut)
24 (frame material side plate) 25 (frame material side plate) through hole 26 (frame material) bottom plate 27 (frame material bottom plate) through hole 30 bolt 31 (bolt) tip 32 washer 33 nut 34 bolt 35 Washer
50 mating part A Cross B B

Claims (6)

In carts with wheels under a square frame,
The frame is assembled into a square shape by connecting the frame material to the four corner members,
Each of the corner members includes a fitting portion protruding in two directions at a right angle or almost a right angle,
The fitting portion includes a wing piece and a connecting projection facing each other with a gap therebetween,
A through-hole through which a bolt can be inserted is provided in both the opposed wing piece and the connecting projection,
The through holes of the wing piece and the connecting projection are provided on the same axis,
The frame material is a square tube,
Through holes through which bolts can be inserted are provided on both of the opposing side plates of the frame material,
The through holes of the opposing side plates are provided on the same axis,
The connection protrusion is provided with a screw-type stopper,
The frame material is fitted over at least the outer side of the connecting projection of the corner member, and the through hole of the side plate of the frame member communicates with the through hole of the corner member and the through hole of the connecting projection,
Bolts are inserted from the outside of the fitted corner member and the frame material into the through holes of the wing pieces and the connecting projections of the corner members and the through holes of the opposing side plates of the frame material,
The corner member and the frame material are coupled by screwing the bolt into the stopper, and the front end side of the bolt protrudes from the stopper to the outside of the frame material, and a nut is screwed to the front end side and tightened. Is also linked by being double linked,
A cart characterized by that. The cart according to claim 1, wherein
The corner member has a cylindrical pipe support that allows the pipe to be inserted vertically,
The corner member pipe support, wing pieces and connecting projections are made of metal,
The frame material is made of aluminum,
A cart characterized by that. The carriage according to claim 1 or claim 2,
The wing piece of the corner member is formed by extending the outer plate of the corner member.
A cart characterized by that. In the trolley | bogie of any one of Claims 1-3,
There is a gap between the wing piece of the corner member and the connecting projection,
The frame material has one side plate inserted into the gap and fitted with the fitting portion.
A cart characterized by that. The cart according to claim 2,
The wing piece of the corner member and the connection protrusion are fixed to the side surface of the pipe support part at one end in the axial direction and protruded to the side of the pipe support part.
A cart characterized by that. In the trolley | bogie of any one of Claims 1-5,
The connecting projection has at least a back wall and a bottom plate,
The frame material is fitted over the connection protrusion,
A through hole into which a bolt can be inserted is opened in the bottom plate of the connection protrusion and the bottom plate of the frame material,
A screw-type stopper is formed on the bottom plate of the connecting protrusion,
The bottom plate of the connecting projection fitted and the bolt inserted into the through hole of the bottom plate of the frame material are screwed into the stopper, and the two bottom plates are also connected.
A cart characterized by that.

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