JP3219410U - Vibration control universal wheel - Google Patents

Abstract

The present invention provides a vibration damping universal wheel capable of improving stability during transportation of a suitcase or a cart.
The vibration damping universal wheel includes a fixed frame, a mounting seat, and a roller, both of which are rotatably connected to the fixed frame, and are controlled at the bottom end of the fixed frame. A vibration groove is opened, a vibration control block 5 is provided in the vibration control groove, a spring 6 is provided between the vibration control block and the top wall of the vibration control groove, and two rollers are interposed via the rotating rod 7. The restriction hole 8 through which the rotating rod passes is fixed to each other and the side wall of the vibration control block is passed through, and the slide hole 9 that can communicate with the control hole is passed through the side wall of the fixed frame. The displacement of the rotating rod along the extending and contracting direction is limited. It can reduce vibration during suitcase transport and can reduce height change.
[Selection] Figure 2

Description

The present invention relates to a universal wheel, and more particularly to a vibration-damping universal wheel.

The caster is an accessory that is easy to move and is used for the bottom of the object and the support legs. Currently, casters are often used for suitcases, robots, luggage vehicles, medical carts, drug facilities, and the like. As innovation progresses, universal wheels appear to take advantage of them, and compared to conventional fixed casters, universal wheels are structurally allowed to rotate 360 ° in the horizontal direction and are more flexible.

Patent Document 1 discloses a universal wheel, which includes a mounting seat, a fixed frame, and a wheel, and the fixed frame is pivotally fixed to a bottom portion of the mounting seat with a central rivet in a vertical direction. There are two circular holes that match the dimensions of the screw, and the edge of the circular hole is provided with a locking groove that matches the locking tool, and the wheel is connected to the fixed frame via the screw. A locking tool is provided on the screw.

Such a universal wheel uses a locking device to improve the stability of the universal wheel, but when passing through an irregular road surface, such a universal wheel constantly generates vibrations and suitcases and carts It affects the stability during transportation and there is room for improvement.

China Utility Model Publication No. CN205498495U

The present invention aims to provide a vibration-damping universal wheel that can improve the stability during transportation of a suitcase or a cart against the shortcomings existing in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions.
The vibration-suppressing universal wheel provided by the present invention includes a fixed frame, a mounting seat provided at the upper end of the fixed frame, and a roller provided at the lower end of the fixed frame, both of which are fixed frames. A vibration control groove is formed at the bottom end of the fixed frame, and a vibration control block is provided in the vibration control groove, and the vibration control block and the vibration control block are provided. Between the top wall of the groove, a spring is provided, two of the rollers are provided, and the two rollers are fixed to each other via a rotating rod, and on the side wall of the damping block, A regulation hole through which the rotation rod passes is penetrated, and a sliding hole that can communicate with the regulation hole is penetrated in the side wall of the fixed frame, and the opening of the sliding hole is provided like a waist type. And the rotating rod is Tsu can be restricted from being moved along the stretching direction of the click.

By adopting the above technical solutions, when dragging a suitcase or pushing a cart on an irregular road surface, the vibration of the suitcase or cart can be reduced by the deformation of the spring, and the effect of damping With the cooperation between the damping block, sliding hole and rotating rod, the two rollers change in height according to the expansion and contraction of the spring, and the suitcase or cart drags on the irregular road surface It reduces the change in height that occurs when it is applied, and further reduces the vibration of the suitcase or cart, and has good vibration damping performance.

According to the present invention, a fixed rod is provided on an upper end surface of the vibration control block, and the spring is provided so as to be provided outside the fixed rod.

By adopting the above technical solution, the arrangement of the fixed rod effectively avoids the occurrence of a deviation during the expansion and contraction of the spring to reduce the damping effect.

The present invention is further provided such that a radius for guiding is provided at the tip of the fixed rod.

By adopting the above technical solution means, it is easier for the workers to assemble the universal wheel by R's guide action, and the production of the universal wheel is mass production. Is greatly improved.

In the present invention, the fixed frame further includes a noise reduction groove on the top wall of the damping groove, and both ends of the spring are in contact with the damping block and the ceiling wall of the damping groove, respectively. Provided.

By adopting the above technical solution, the tip of the spring and the top wall of the damping groove are in contact, so by opening a noise reduction groove, the tip of the spring and the top wall of the damping groove are The contact area is effectively reduced, and noise caused by friction between the spring and the top wall of the vibration control groove is reduced.

In the present invention, the fixed frame is provided such that a spacer block is provided on each of two opposing side walls where the opening of the sliding hole is located.

By adopting the above technical solution, when the universal wheel is used, the flatness of the road surface is poor, so that one of the two rollers inevitably shifts to the other, and the side wall of the roller and the fixed frame Scratches occur between them, destroying aesthetics and increasing the resistance of the roller, but the arrangement of the two spacer blocks avoids scratches between the roller and the side walls of the fixed frame.

In the present invention, the fixed frame and the bottom end of the vibration control block are both provided in an arc shape, and when the vibration control block is displaced to the lowest end, the fixed frame and the bottom end of the vibration control block Are provided so as to constitute a complete arc surface.

By adopting the above technical solutions, when the universal wheel is shipped, the elastic block's elastic force makes the damping block and the bottom of the fixed frame form a complete arc surface, improving the beauty. This is advantageous for improving sales volume.

In the present invention, the fixed frame further includes a vibration damping portion and a connection portion provided on a side wall of the vibration damping portion, the roller is provided at a lower end of the vibration damping portion, and the mounting seat is connected. Provided at the bottom end of the connecting part, and an arcuate recess is provided at the bottom end of the connecting part, and the arcuate surface of the arcuate recess is provided so as to be in contact with the side wall of the damping part. It is done.

By adopting the above technical solution, the roller is rotated around the mounting seat by the arrangement of the connection part and the vibration damping part, further improving the flexibility of the universal wheel, and by the arrangement of the arc-shaped recess. , Improve the structural strength of the connection between the connecting part and the damping part.

In the present invention, a rotation shaft is provided on the lower end surface of the mounting seat, and a rotation groove into which the rotation shaft is inserted is formed on the upper end surface of the connection portion. A positioning hole communicating with the rotation groove is penetrated in the side wall of the part, an annular groove is opened in the side wall of the rotation shaft, and a positioning pin is tightly fitted in the positioning hole. The positioning pin is provided so as to contact two opposing side walls of the annular groove.

By adopting the above technical solution, at the time of assembly, the rotating shaft is inserted into the rotating groove at the upper end of the connecting portion, and the positioning pin is pushed into the positioning hole, so that the rotating shaft is Positioning is realized, its structure is simple and easy to assemble.

As described above, the present invention has the following beneficial effects.
1. Has a good damping effect.
2. The structure is simple and easy to assemble.

It is a structure conceptual diagram of an Example. It is an exploded view of an Example. It is a structure conceptual diagram of the fixed frame in an Example.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

As shown in FIG. 1, the damping universal wheel includes a fixed frame 3, a mounting seat 1 provided at the upper end of the fixed frame 3, and a roller 2 provided at the lower end of the fixed frame 3. However, both the mounting seat 1 and the roller 2 are pivotally connected to the fixed frame 3.

As shown in FIGS. 2 and 3, a damping groove 4 is formed at the bottom end of the fixed frame 3, and a damping block 5 is provided in the damping groove 4 so as to slide. The side walls of the vibration control block 5 come into contact with the four side walls of the vibration control groove 4. A spring 6 is provided between the damping block 5 and the ceiling wall of the damping groove 4, and both ends of the spring 6 abut against the ceiling wall of the damping block 5 and the damping groove 4, respectively.

However, two rollers 2 are provided, and a rotating rod 7 is fixedly connected between the two rollers 2 in the axial direction. The rotating rod 7 passes through the side wall of the vibration control block 5. A restriction hole 8 that causes relative rotation is penetrated, and a sliding hole 9 that can communicate with the restriction hole 8 is penetrated in the side wall of the fixed frame 3, and the opening of the sliding hole 9 is waist-shaped. The sliding hole 9 can limit the displacement of the rotating rod 7 along only the expansion / contraction direction of the vibration control block 5.

Preferably, the fixed rod 10 is integrally connected to the upper end surface of the vibration control block 5, and the spring 6 is provided around the outer side of the fixed rod 10. In order to facilitate the assembly of the spring 6, a radius 11 for guiding is provided at the tip of the fixed rod 10. However, in the fixed frame 3, a noise reduction groove 12 having an opening “10” -shaped is formed in the top wall of the vibration damping groove 4, and friction due to friction between the spring 6 and the ceiling wall of the vibration damping groove 4 Abnormal noise can be effectively reduced.

However, the bottom ends of the fixed frame 3 and the damping block 5 are both provided in an arc shape, and when the damping block 5 is displaced to the lowest end, the fixed frame 3 and the bottom ends of the damping block 5 Constitutes a complete arc surface, thereby improving the beauty of the universal wheel.

When the universal wheel rolls on uneven ground, one of the rollers 2 is inevitably pressed in the direction of the other roller 2, and in the process of the roller 2 being displaced, damage is caused between the side walls of the fixed frame 3. In order to avoid this, in the fixed frame 3, the spacer block 13 is integrally connected to two opposing side walls where the opening of the sliding hole 9 is located.

The fixed frame 3 includes a vibration damping portion 31 and a connection portion 32 integrally connected to the side wall of the vibration damping portion 31, the roller 2 is provided at the lower end of the vibration damping portion 31, and the mounting seat 1 is It is provided above the connection part 32. However, an arc-shaped recess is provided at the bottom end of the connection portion 32, and the arc surface of the arc-shaped recess is in contact with the side wall of the vibration damping portion 31.

A rotation shaft 14 is fixedly connected to the lower end surface of the mounting seat 1, and a rotation groove 15 into which the rotation shaft 14 is inserted is formed on the upper end surface of the connection portion 32. A positioning hole 16 communicating with the rotation groove 15 is passed through the side wall of the portion 32, and an annular groove 17 is formed in the side wall of the rotation shaft 14, and the rotation shaft 14 is connected to the rotation groove 15. The annular groove 17 on the rotation shaft 14 is positioned in the positioning hole 16 when it is inserted into the rotation groove 15 and abuts against the groove bottom of the rotation groove 15. A positioning pin 18 is tightly fitted in the positioning hole 16, and the positioning pin 18 comes into contact with two opposite side walls of the annular groove 17.

The above is only a preferred embodiment of the present invention, and does not limit the present invention. Any modifications, equivalent replacements, and improvements made based on the design concept of the present invention are included in the protection scope of the present invention. It is.

1 mounting seat;
2 rollers;
3 fixed frame;
31 Vibration control unit;
32 connections;
4 damping groove;
5 Damping block;
6 springs;
7 rotating rod;
8 restriction holes;
9 sliding holes;
10 fixed rods;
11 Earl;
12 Noise reduction groove;
13 spacer block;
14 pivot axis;
15 rotating groove;
16 positioning holes;
17 annular groove;
18 Positioning pin.

Claims (8)

A fixed frame (3), a mounting seat (1) provided at the upper end of the fixed frame (3), and a roller (2) provided at the lower end of the fixed frame (3), the mounting seat (1) and the roller (2) is a vibration-suppressing universal wheel that is pivotally connected to the fixed frame (3), and a vibration-reducing groove (4) is provided at the bottom end of the fixed frame (3). A damping block (5) is provided in the damping groove (4), and a spring (6) is provided between the damping block (5) and the ceiling wall of the damping groove (4). ), Two rollers (2) are provided, and the two rollers (2) are fixed to each other via a rotating rod (7), and are attached to the side wall of the damping block (5). In this case, a restriction hole (8) through which the rotating rod (7) passes is penetrated, and a sliding hole (9) that can communicate with the restriction hole (8) penetrates the side wall of the fixed frame (3). Have been The opening of the sliding hole (9) is provided like a waist, and the displacement of the rotating rod (7) along the expansion / contraction direction of the damping block (5) can be restricted. Vibration universal wheel. A fixed rod (10) is provided on an upper end surface of the vibration control block (5), and the spring (6) is provided around the fixed rod (10). Vibration-control universal wheel as described in The damping universal wheel according to claim 2, wherein a radius (11) for guiding is provided at a tip of the fixed rod (10). The fixed frame (3) is provided with a noise reduction groove (12) on the top wall of the vibration control groove (4), and both ends of the spring (6) are provided with a vibration control block (5) and a vibration control block, respectively. 2. The vibration-suppressing universal wheel according to claim 1, wherein the vibration-reducing universal wheel is in contact with the top wall of the vibration groove. The control frame according to claim 1, wherein the fixed frame (3) is provided with a spacer block (13) on each of two opposing side walls where the opening of the sliding hole (9) is located. Vibration universal wheel. The bottom ends of the fixed frame (3) and the vibration control block (5) are both provided in an arc shape, and when the vibration control block (5) is displaced to the lowest end, the fixed frame (3) The damping universal wheel according to claim 1, characterized in that the bottom end of the damping block (5) forms a complete arc surface. The fixed frame (3) includes a vibration damping part (31) and a connection part (32) provided on a side wall of the vibration damping part (31), and the roller (2) is connected to the vibration damping part (31). Provided at the lower end, the mounting seat (1) is provided above the connecting portion (32), and an arc-shaped recess is provided at the bottom end of the connecting portion (32), The damping universal wheel according to claim 1, wherein the arc surface of the arcuate recess is in contact with a side wall of the damping part (31). A rotation shaft (14) is provided on the lower end surface of the mounting seat (1), and a rotation groove (in which the rotation shaft (14) is inserted on the upper end surface of the connection portion (32)). 15) is established, and a positioning hole (16) communicating with the rotation groove (15) is penetrated in the side wall of the connection portion (32), and the side wall of the rotation shaft (14) An annular groove (17) is opened, and a positioning pin (18) is tightly fitted in the positioning hole (16), and the positioning pin (18) has two annular grooves (17). The vibration-suppressing universal wheel according to claim 7, which abuts against opposing side walls.