CN209022686U - A transmission caster with shock absorber - Google Patents

Abstract

The utility model discloses a kind of transmission castor with damper, with damping effect.A kind of transmission castor with damper, mounting bracket including being fixed to conveying device lower part, it is connected to the lid of mounting bracket lower part, the wheel being mounted on lid, it is characterized by also including the buffer units of the vertical impact for buffering wheel, buffer unit has axis hole, the axle portion of wheel is connected by upper and lower long hole with axis hole, buffer unit includes cushion and support frame, support frame and lid are formed hingedly by hinge axis, cushion is placed on support frame, and the top of cushion offsets with lid, and the axis hole is set on the support frame.

Description

A transmission caster with shock absorber

technical field

The utility model relates to a transmission caster, in particular to a transmission caster with a shock absorber.

Background technique

Generally, transfer casters facilitate the movement of the mounted objects, for example, transfer casters are provided under various conveying devices, such as hospital beds or other devices for conveying items, to provide convenient movement.

In particular, transfer casters have been developed to have various functions, such as 360-degree rotation, linear rotation via brakes, and rotation limitation and linear motion.

Various transfer casters have been disclosed, such as the transfer caster disclosed in Korean Utility Model Patent No. 20-0468121, which includes a mounting bracket fixed to the lower portion of the conveying device, a cover attached to the lower portion of the mounting bracket, and a wheel for limiting the rotation of the wheel and a linear motion brake is attached to the inside of the cover.

For example, the braking device may include a rotating cam, a shaft raised and lowered together with the rotating cam, and a lock cup connected to the lower end of the shaft to restrict the rotation of the wheel through the concave-convex structure of the lock cup. When the shaft is lowered with the rotating cam, the wheel lock elastically presses the wheel.

However, since the conventional transfer caster has a structure that directly fixes the wheel to the axle, there is a problem that the vertical impact on the transfer caster is directly transmitted to the conveying device when passing over a threshold or other irregular road surface.

Utility model content

The purpose of the utility model is to provide a transmission caster with a shock absorber, which has a shock absorption effect.

To achieve the above object, the utility model provides the following technical solutions:

A transmission caster with shock absorber, comprising a mounting bracket fixed to the lower part of the conveying device, a cover connected to the lower part of the mounting bracket, a wheel mounted on the cover, and characterized in that: it also includes a buffer for buffering the vertical impact of the wheel The buffer device has an axle hole, the axle of the wheel is connected with the axle hole through the upper and lower long holes, the buffer device includes a buffer pad and a support frame, the support frame and the cover are hinged through the hinge shaft, and the buffer pad is placed on the support frame, And the top of the buffer pad is in contact with the cover, and the shaft hole is arranged on the support frame.

Further, the upper and lower long holes of the cover are formed in an arc shape having the same rotation direction as the support bracket, and the shaft portion is inserted into an engaging hole formed laterally at a lower portion of the support bracket.

Further, the lower part of the cushion pad is an inclined surface perpendicular to the cushioning direction of the wheel.

Further, the upper and lower parts of the cushion pad are composed of corrugated protrusions.

In the present invention, since the wheel is vertically movable on the cover, and the axle portion of the wheel is connected with the buffer device, the vertical impact of the wheel on the sill or irregular road surface can be effectively buffered.

Specifically, the buffer pad is arranged on the support frame on the wheel, so that the buffering direction of the wheel matches the buffering direction of the buffer pad, and the buffering force of the buffer pad is evenly applied.

In addition, corrugated concave-convex portions are formed on the upper and lower surfaces of the cushion pad, and the corrugated concave-convex portions can resist the initial impact, thereby further improving the overall cushioning efficiency.

Description of drawings:

Fig. 1 is a perspective view showing a transmission caster of the present invention.

FIG. 2 is a perspective view showing a partially disassembled state of FIG. 1 .

FIG. 3 is a perspective view showing a state in which a part of the cover of FIG. 2 is cut away.

4 is a side sectional view showing the transfer casting machine of the present invention.

Fig. 5 is a side sectional view showing a state after the buffer operation of the present invention.

Fig. 6 is a perspective view showing a cushion pad and a support frame of the present invention.

Fig. 7 is a perspective view showing another embodiment of the cushion of the present invention.

FIG. 8 is a front view of another embodiment of the cushion of the present invention.

Detailed ways:

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A transmission caster 100 with a shock absorber of the present invention is fixed at the lower part of the conveying device, as shown in FIGS. 1 to 6 .

The transfer caster with shock absorber includes a mounting bracket 10 fixed to the lower part of the conveying device, and a cover 20 connected to the lower part of the mounting bracket. Wheels 30 mounted on the cover. The shock absorber includes a buffer device 50 for buffering the vertical impact of the wheel, and the shaft portion 32 of the wheel is inserted into the shaft hole of the buffer device through the upper and lower long holes 22 . The buffer device includes a buffer pad 60 and a support frame 55 , and the support frame 55 and the cover are hinged through a hinge shaft 56 . The bumper 60 rests on the support frame 55 with the top of the bumper against the cover. The shaft hole is arranged on the support frame.

The upper and lower long holes 22 of the cover 20 are formed in an arc shape 31 having the same rotation direction as the support frame 55, and the shaft portion 32 is inserted into the engaging hole 57 formed laterally at the lower portion of the support frame and the cushion 60 is supported by the shaft portion and The rack 55 is simultaneously moved up and down in the same manner to perform the buffering operation.

The lower part of the cushion pad 60 is an inclined surface 61 perpendicular to the vertical cushioning direction of the wheel, and is evenly arranged to the cushion pad.

The upper and lower parts of the cushion pad 60 are constituted by corrugated protrusions 63 so as to effectively resist the initial impact.

Hereinafter, the structure and operation of the present invention will be described.

The transmission caster 100 of the present invention forms a shaft hole, the shaft portion 32 of the wheel 30 is inserted into the shaft hole through the upper and lower long holes 22 on one side of the cover 20, and the hinge shaft 56 is connected to the cover 20, the wheel 30 and the support frame 55 is mounted on the hinge shaft 56 so that the shaft portion 32 of the wheel is inserted into the engaging hole 57 in the lower part of the support frame 55 so that they can move in the same vertical direction with the same turning radius.

The cushioning pad 60 with cushioning force is inserted between the support frame 55 and the cover upper support 21, so that the up and down impact generated when the wheel 30 passes the sill or irregular road surface is transmitted to the wheel 30, so that the support frame 55 compresses the cushion pad 60, Since it is buffered when moving vertically, the buffering efficiency is excellent.

In addition, the lower part of the buffer pad 60 includes an inclined surface 61 perpendicular to the buffering direction of the wheel, and a support surface 58 is provided on the support frame for the inclined surface 61 to fit. The bumper 60 is not twisted with respect to the up and down impact of the bumper, which not only provides better cushioning efficiency, but also prevents torsional damage of the bumper 60 .

In addition, the cushion pad 60 is formed with corrugated convex and concave parts 63 on the upper side and the lower side, when the corrugated convex and concave parts 63 of the lower part of the cushion cushion are more tightly to the support frame 55 and the support part 21 of the upper part of the cover, so that it can provide more good buffering efficiency.

Therefore, the present invention provides a shock absorber that can be easily installed by inserting a shock pad between the cover and the wheel, so that the shock can be effectively buffered and operated, and it can effectively buffer the wheel on the sill or on the irregular road surface impact.

In particular, the buffer pad is arranged on the bracket on the wheel, so that the buffering direction of the wheel is the same as the buffering direction of the buffer pad.

The purpose of providing excellent cushioning efficiency and durability of the cushioning pad is achieved by uniformly applying the cushioning force to the cushioning pad 60 .

In addition, the transmission caster of the present invention may also be provided with a braking device 40, which can limit the rotation of the transmission caster in the circumferential direction, which is no different from the prior art, and will not be repeated here.

Claims (4)

1. A transmission caster with shock absorber, comprising a mounting bracket (10) fixed to the lower part of the conveying device, a cover (20) connected to the lower part of the mounting bracket, and a wheel (30) mounted on the cover, characterized in that: It also includes a buffer device (50) for buffering the vertical impact of the wheel, the buffer device (50) has a shaft hole, the shaft portion (32) of the wheel is connected with the shaft hole through the upper and lower long holes (22), and the buffer device includes a buffer The pad (60) and the support frame (55), the support frame (55) and the cover are hinged through the hinge shaft (56), the buffer pad (60) is placed on the support frame (55), and the top of the buffer pad is in contact with the cover, The shaft hole is arranged on the support frame. 2 . The transmission caster with shock absorber according to claim 1 , wherein the upper and lower long holes ( 22 ) of the cover ( 20 ) are formed as arcs with the same rotation direction as the support frame ( 55 ). 3 . (31), and the shaft portion (32) is inserted into an engagement hole (57) formed laterally at the lower portion of the support frame. 3. The transmission caster with shock absorber according to claim 1, wherein the lower part of the buffer pad (60) is an inclined surface (61) perpendicular to the buffering direction of the wheel. 4. A transmission caster with a shock absorber according to claim 1, characterized in that the upper and lower parts of the buffer pad (60) are formed by corrugated protrusions (63).