TWM557208U - Caster with shock absorber - Google Patents

Abstract

The present invention provides a caster with a shock absorber function, which mainly comprises a shaft joint, a suspension mechanism and two casters, the suspension mechanism is arranged side by side with the shaft joint, and each caster is arranged on the suspension mechanism, the avoidance The shock mechanism comprises: a body; a connecting arm, one end of which is screwed on the seat body; a rotating seat is screwed on the other end of the connecting arm; at least one limiting convex portion is disposed on the seat body, The top surface of the limiting protrusion selectively abuts against the outer side of the connecting arm for limiting the range in which the connecting arm swings downward; and a spring is disposed between the seat body and the rotating base.

Description

Casters with suspension function

This creation relates to a caster, and in particular to an innovative structural type revealer of a caster with a suspension function.

Most of the luggage currently on the market are equipped with casters for easy movement. When it moves on a rough road surface, it is easy to vibrate and generate noise. As a result, the luggage industry has developed a trunking caster with a shock absorbing function, which mainly uses a spring provided between the trunk and the caster to provide a shock absorbing function. As a result, the luggage industry began to develop the trunk casters with shock absorption. The new patent case No. M531905, approved by the Bureau of the People's Republic of China on November 11, 2016, "the luggage castor with shock absorption function" mainly includes a mount for fixing to the bottom of the trunk, and is installed in sequence. The spring and the pressure plate at the bottom of the mounting seat, a wheel base screwed under the mounting seat, and a roller screwed on the wheel base, and a spring provided in the inner side of the mounting seat provides a shock absorbing function.

However, the conventional caster structure type has found that the following problems still exist in the actual use experience: since the components of the conventional caster are assembled in the axial direction, the spring has only the shaft. If the load is applied to the side of the wheel by the road surface, the conventional caster cannot respond to the shock absorber function. When the load is too large, the caster or other components will be deformed or damaged. After that.

Therefore, in view of the problems existing in the above-mentioned conventional caster structure, how to develop an innovative structure that is more ideal and practical, is expected by users, and is also related to the industry's efforts to develop breakthrough goals and directions.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide a caster with shock-absorbing function. The technical problem to be solved is to aim at how to develop a new type of caster structure with shock-absorbing function that is more ideal and practical. Innovation breakthrough. The technical feature of the present invention is mainly that the caster having the suspension function includes: a shaft joint for connecting a steering shaft and pivoting to a bottom surface of a target object; and a suspension mechanism connected to the shaft The suspension mechanism comprises: a body extending outward from the shaft socket, and two sides of the side panel extending from the periphery of the seat body, so that the seat body is generally ㄇ-shaped and Forming a accommodating space, a shaft hole is respectively defined in the bottom of the two side plates adjacent to the bottom of the shaft socket, and a first positioning protrusion is disposed at a position adjacent to the top end of the accommodating space; The arm defines a first pivoting section, a second pivoting section, and a connecting section between the first and second pivoting sections, wherein the first pivoting section is disposed between the two side panels The first pivoting portion is provided with a first pivot hole, and the connecting rod is screwed on the second pivot hole and the first pivot hole through a shaft, and the connecting arm is screwed on the base body. a free slot is formed in the free end of the segment, the slot extends toward the connecting segment, and the The second pivoting portion is provided with a second pivoting hole extending through the receiving slot; a rotating base having a second positioning protrusion at a top surface thereof opposite to the first positioning protruding post, and the bottom of the rotating base is oriented An elongate pivoting block is inserted into the receiving slot, wherein the elongate pivoting block is provided with a third pivot hole corresponding to the second pivot hole; at least one limiting protrusion, Provided at a position below the shaft hole adjacent to the shaft hole, the top surface of the limiting protrusion selectively abuts against the outer side of the connecting arm for limiting the range in which the connecting arm swings downward; and a spring is disposed on the Between the seat body and the rotating base, and located in the accommodating space, the two ends of the spring are respectively sleeved on the first positioning protrusion and the second positioning protrusion, and the spring provides the first and second The positioning protrusions are elastically restrained to maintain the relative positions of the first and second positioning protrusions; and the two casters each have a wheel hole, and the second pivot hole of the second pivoting section is penetrated through a wheel axle, a third pivot hole of the elongated pivoting block and a wheel hole of the two casters, wherein the rotating base and the two casters respectively Provided on the connecting arm.

With this innovative and unique design, the original joints and the suspension mechanism are arranged side by side in comparison with the prior art. Compared with the conventional casters, the suspension function for the lateral component is increased to avoid external application. The force generates excessive torque, which causes damage and achieves the effect of prolonging its service life. Moreover, since the first and second positioning studs can maintain relative positions, the spring is not easy to be twisted when the spring is actuated, and damage is avoided. The effect is particularly practical and progressive.

Please refer to Figures 1, 1A, 2, 3, and 4 for a preferred embodiment of the caster having a suspension function. However, these embodiments are for illustrative purposes only and are not applicable to patent applications. Structural limitations. The caster having the suspension function includes a shaft socket 10, a suspension mechanism 20 and two casters 30. The suspension mechanism 20 is arranged in parallel with the shaft socket 10, and each caster 30 is disposed on the suspension mechanism 20. The shaft base 10 is connected to a steering shaft 11 and is pivotally connected to a bottom surface of a target object 40. The target object 40 can be, but is not limited to, a trunk and a seat.

The suspension mechanism 20 includes a body 21 , a connecting arm 22 , a rotating seat 23 , at least one limiting protrusion 24 , and a spring 25 . The seat body 21 extends outward from the shaft socket 10 . Two sides of the side of the shaft body 21 are disposed on the two sides of the shaft body 211. The two side plates 211 are formed in an outer shape and are disposed adjacent to the bottom of the shaft base 10. A shaft hole 213 is defined in the housing, and a first positioning protrusion 214 is disposed at a position adjacent to the top of the receiving space 212.

The connecting arm 22 defines a first pivoting section 221, a second pivoting section 222 and a connecting section 223 between the first and second pivoting sections 221 and 222. The connecting portion 221 is disposed between the two side plates 211. The first pivoting portion 221 is provided with a first pivot hole 224, and is disposed through the shaft 26 and the first pivot hole 224. The connecting arm 22 is disposed on the seat body 21, and a receiving slot 225 is defined in the free end of the second pivoting portion 222. The receiving slot 225 extends toward the connecting portion 223, and the second pivoting portion 222 A second pivot hole 226 is formed through the receiving slot 225, and the second pivoting portion 222 protrudes outwardly from a side of the connecting arm 22.

a second positioning protrusion 231 is disposed on the top surface of the rotating base 23 at a position opposite to the first positioning protrusion 214. The second positioning protrusion 231 has a tapered structure and defines a set of positions according to the position. 232 and a tapered section 233, the sleeve section 232 is for the spring 25 to be firmly coupled to the second positioning boss 231, and the tapered section 233 provides a margin for the spring 25 to swing slightly to avoid the spring. In the process of 25 micro-swings, interference occurs that makes it impossible to move smoothly. An elongated pivoting block 234 extends from the bottom of the rotating base 23, and the elongated pivoting block 234 is inserted into the receiving slot 225. The elongated pivoting block 234 is disposed corresponding to the second pivoting hole 226. There is a third pivot hole 235, and the two sides of the elongated pivot block 234 are oppositely tapered. In this example, the bottom end of the connecting portion 223 of the rotating base 23 extends outwardly from the limiting protrusion 24 to provide a blocking protrusion 227, and the inner circumference of the blocking protrusion 227 selectively abuts the limit. The free end surface of the convex portion 24 achieves the effect of inserting the fixed position.

The limiting protrusion 24 is disposed at a position below the shaft hole 213 of the seat body 21, and the top surface of the limiting protrusion 24 is selectively abutted outside the connecting arm 22 for limiting the connecting arm 22 downward. In addition to the action of the support and the limit connecting arm 22, the limit convex portion 24 prevents the swing angle of the connecting arm 22 from being excessively large, thereby causing the problems of separating and falling off the members of the suspension mechanism 20.

The spring 25 is disposed between the base body 21 and the rotating base 23, and is located in the accommodating space 212, and the two ends of the spring 25 are respectively sleeved on the first positioning protrusion 214 and the second The first and second positioning protrusions 214 and 231 are elastically restrained to maintain the relative positions of the first and second positioning protrusions 214 and 231. In this example, the spring 25 is a compression spring 25 that avoids the problem of easy damage to its contacts relative to other conventional casters using tension springs.

The caster 30 has a wheel hole 31, and the second pivot hole 226 of the second pivoting portion 222, the third pivot hole 235 of the elongated pivoting block 234, and the wheel of the two casters 30 are disposed through a wheel axle 32. The hole 31 is configured to screw the rotating base 23 and the two casters 30 to the connecting arm 22 respectively. The outer side of the caster 30 is provided with a detachable wheel cover 33.

As shown in the second and fourth embodiments, the suspension mechanism 20 further includes a first spacer 27 and a second spacer 28. The first spacer 27 is disposed on the base 21 and the spring 25. The second spacer 28 is disposed between the rotating seat 23 and the spring 25 and sleeved on the second positioning protrusion 231. The first and second spacers 27, 28 have a protective seat 21 and a rotary seat 23 to avoid being scratched by the spring 25.

With the above structural composition design, the operation of the present invention is explained as follows: As shown in FIG. 4, when the caster 30 is subjected to an external force application (for example, the caster 30 moves on the road surface and encounters a protrusion and is stressed. When the connecting arm 22 of the suspension mechanism 20 rotates with the shaft 26 as a fulcrum, the connecting arm 22 drives the rotating seat 23 connected thereto to rise synchronously, thereby compressing the spring 25, thereby buffering the vibration from the caster 30. An actuation feature means that the suspension mechanism 20 can absorb external force in different directions to achieve better shock absorption and noise reduction.

As shown in FIG. 5, another embodiment of the present invention is different from the preferred embodiment in that the limiting protrusion 24 extends toward the second pivoting section 222 to form at least one abutting end 241. The abutting end 241 is selectively abutted against the second pivoting section 222 for limiting the range in which the connecting arm 22 swings downward.

As shown in FIG. 6 , another embodiment of the present invention differs from the preferred embodiment in that the top surface of the shaft base 10 is provided with a plurality of balls 12 and the object 40 (not shown). A connecting portion 41 is provided, and the connecting portion 41 is coupled to the shaft base 10 to be rotated by the balls 12.

As shown in FIG. 7, the main difference between the other embodiments of the present invention and the preferred embodiment is that the object 40 (not shown) is provided with a base 42 which is rotated by the steering shaft 11 It is provided on the shaft socket 10.

Efficacy Description: This work reveals "the casters with shock-absorbing function" mainly through the innovative unique structural patterns and technical features of the shaft sockets, suspension mechanisms, casters, etc., so that this creation is compared with [previous technology] In the conventional structure, the shaft joint and the suspension mechanism are arranged side by side, and the suspension function for the lateral component is increased compared with the conventional caster to avoid excessive torque generated by external force. Damage, to achieve the effect of extending its useful life; in addition, because the first and second positioning studs can maintain relative position, when the spring is actuated, it is not easy to twist, and the effect of damage is avoided, and the utility is particularly practical. And better industry utilization benefits.

10‧‧‧Axis socket
11‧‧‧Steering shaft
12‧‧‧ balls
20‧‧‧Shocking mechanism
21‧‧‧ body
211‧‧‧ side panels
212‧‧‧ accommodating space
213‧‧‧ shaft hole
214‧‧‧First positioning stud
22‧‧‧Connecting arm
221‧‧‧First pivotal section
222‧‧‧Second pivotal section
223‧‧‧Connection section
224‧‧‧ first pivot hole
225‧‧‧ 容容
226‧‧‧Second pivot hole
227‧‧‧Blocking bumps
23‧‧‧Rotating seat
231‧‧‧Second positioning stud
232‧‧‧ sets of segments
233‧‧‧Concession
234‧‧‧Long-shaped pivot block
235‧‧‧ third pivot hole
24‧‧‧Limited convex
241‧‧‧Abutment
25‧‧‧ Spring
26‧‧‧ shaft
27‧‧‧First gasket
28‧‧‧Second gasket
30‧‧‧ casters
31‧‧‧ wheel holes
32‧‧‧Axle
33‧‧‧ wheel cover
40‧‧‧ object
41‧‧‧Connecting Department
42‧‧‧Base

Fig. 1 is a combined perspective view of a preferred embodiment of a caster having a suspension function. Fig. 1A is a perspective view of another perspective of Fig. 1. Fig. 2 is an exploded perspective view of Fig. 1. Figure 3 is a side view of the connecting arm of the present invention. Figure 4 is a side view of the creation, showing the arrangement relationship between the shaft socket and the object. Fig. 5 is a side view showing another modified embodiment of the structural form of the limit projection of the present invention. Fig. 6 is a side view showing another modified embodiment of the arrangement relationship between the shaft socket and the object of the present invention. Fig. 7 is a side view showing another modified embodiment of the arrangement relationship between the shaft socket and the object of the present invention.

Claims (7)

A caster having a suspension function includes: a shaft joint for connecting a steering shaft and pivoting to a bottom surface of a target object; and a suspension mechanism disposed in parallel with the shaft joint, the shock absorber comprising: a body extending outwardly from the shaft socket, and two side facing side plates extending from two sides of the body body, so that the seat body is generally ㄇ-shaped and enclosing a receiving space, A side hole is defined in the bottom plate adjacent to the bottom of the shaft socket, and a first positioning protrusion is disposed adjacent to the top of the receiving space; a connecting arm defines a first position according to the position a pivoting section, a second pivoting section, and a connecting section between the first and second pivoting sections, wherein the first pivoting section is disposed between the two side panels, and the first pivoting section is provided with a first a pivot hole is disposed through the shaft and is disposed on the second pivot hole and the first pivot hole, so that the connecting arm is screwed on the base body, and a receiving groove is formed from a free end of the second pivoting portion. The receiving slot extends toward the connecting section, and the second pivoting section is provided with a through hole a second pivot hole; a top surface of the rotating base is provided with a second positioning protrusion that is opposite to the first positioning protrusion, and an elongated pivoting block extends outwardly from the bottom of the rotating base. The elongated pivoting block is inserted into the receiving slot, wherein the elongated pivoting block is provided with a third pivoting hole corresponding to the second pivoting hole; and at least one limiting convex portion is disposed adjacent to the axially extending In the lower position, the top surface of the limiting protrusion selectively abuts against the outer side of the connecting arm for limiting the range in which the connecting arm swings downward; and a spring is disposed between the seat body and the rotating seat And the two ends of the spring are respectively sleeved on the first positioning protrusion and the second positioning protrusion, and the spring provides an elastic binding force of the first and second positioning protrusions, so that the spring The first and second positioning protrusions maintain a relative position; and the two casters each have a wheel hole, and the second pivot hole of the second pivoting section and the third pivot hole of the elongated pivoting block are penetrated through a wheel axle And the wheel hole of the two casters, wherein the rotating base and the two casters are respectively screwed on the connecting arm. The caster having the suspension function as described in claim 1, wherein the bottom end of the connecting portion of the rotating base extends outwardly from the limiting protrusion to provide a blocking protrusion, and the blocking protrusion is inside The peripheral edge selectively abuts against the free end surface of the limiting protrusion. The caster having a suspension function according to claim 1, wherein the second pivoting section protrudes outwardly from a side of the connecting arm, and the limiting convex portion extends toward the second pivoting section. An abutting end is formed, the abutting end selectively abutting against the second pivoting section for limiting a range in which the connecting arm swings downward. The caster having the suspension function as described in claim 2 or 3, wherein the second positioning protrusion has a tapered structure, and defines a set of segments and a tapered portion according to the position, the set of segments The spring is firmly coupled to the second positioning post, and the tapered section provides a margin for the spring to swing slightly. The caster having the suspension function as described in claim 4, wherein the suspension mechanism further comprises a first gasket and a second gasket, wherein the first gasket is disposed on the seat body and the spring The second spacer is disposed between the rotating seat and the spring and is sleeved on the second positioning protrusion. The caster having the suspension function as described in claim 5, wherein the two sides of the elongated pivoting block are oppositely tapered. The caster having the suspension function as described in claim 6 wherein the outer side of the caster is provided with a detachable wheel cover.