Luggage trundle

Abstract

A damping wheel carrier of the luggage trundle comprises an installation support, a wheel seat and a buffer spring, the rear end of a base of the installation support is integrally connected to a luggage connecting portion of the installation support to form L-shaped arrangement, and a sliding positioning portion at the bottom of the base comprises a first positioning seat portion and a second positioning seat portion. A receding groove cavity with an opening in the bottom end is formed between the first positioning seat part and the second positioning seat part in a spaced mode, the wheel seat is configured to be limited on the sliding positioning part to do lifting sliding, the wheel seat comprises a middle main seat body corresponding to the receding groove cavity, and a first connecting end at one end of the middle main seat body is slidably matched with the first positioning seat part. The idler wheel is installed on the middle main seat body through a wheel shaft, the buffer spring is compressed in the receding groove cavity, one end of the buffer spring is supported on the middle main seat body, and the other end of the buffer spring abuts against the installation support. And the wheel carrier has the advantages of good structural strength and reliable work.

Description

Technical Field

[0001] The utility model relates to luggage accessories, specifically to luggage casters. Background Art

[0002] The buffer and shock absorption function has been emphasized in luggage casters, and various structural forms of buffer and shock absorption solutions have been developed and applied; one form is that the wheel frame is designed as two movable parts, and at the same time, a spring is designed. To ensure the structural strength of the wheel frame, there is a current bracket design in which two components are arranged in an L shape and hinged. Under this structural design of the wheel frame, the spring is exposed, resulting in the spring being easily impacted and interfered with, affecting the working reliability and service life of the caster; in addition, the assembly structure is complex, and the efficiency of the processing, manufacturing, and assembly links is low. Summary of the Invention

[0003] The invention purpose of the utility model: To overcome the defects existing in the prior art, the utility model provides a luggage caster that is reliable in work on the basis of ensuring the structural strength of the wheel frame.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A luggage caster includes a shock-absorbing wheel frame and a roller. The shock-absorbing wheel frame includes a mounting bracket and a wheel seat that are connected to be relatively movable. A buffer spring is arranged between the mounting bracket and the wheel seat. The characteristics are as follows: The mounting bracket includes a luggage connecting part and a base arranged in an L shape. The rear end of the base is integrally formed and connected to the luggage connecting part. A sliding positioning part is arranged at the bottom of the base. The sliding positioning part includes a first positioning seat part and a second positioning seat part. An emptying groove cavity with an open bottom end is formed at an interval between the first positioning seat part and the second positioning seat part. The wheel seat is configured to be restricted to slide up and down on the sliding positioning part. The wheel seat includes an intermediate main seat body corresponding to the position of the emptying groove cavity. One end of the intermediate main seat body is provided with a first connecting end part that slidably cooperates with the first positioning seat part. The other end of the intermediate main seat body is provided with a second connecting end part that slidably cooperates with the second positioning seat part. The roller is installed on the intermediate main seat body through a wheel shaft. The buffer spring is compressed in the emptying groove cavity. One end of the buffer spring supports on the intermediate main seat body, and the other end of the buffer spring abuts against the mounting bracket.

[0006] Preferably, the intermediate main seat body is slidably and positioned in cooperation with the emptying groove cavity. A first positioning wall is arranged at one end of the intermediate main seat body where it is connected to the first connecting end part. A second positioning wall is arranged at one end of the intermediate main seat body where it is connected to the second connecting end part. One side wall of the emptying groove cavity that is horizontally connected to the first positioning seat part is in guiding cooperation with the first positioning wall. One side wall of the emptying groove cavity that is horizontally connected to the second positioning seat part is in guiding cooperation with the second positioning wall.

[0007] Preferably, the first positioning seat portion has an upper limiting wall and a lower limiting wall arranged opposite to each other up and down. A sliding space is formed between the upper limiting wall and the lower limiting wall. The first connecting end portion is inserted into the sliding space along one side of the clearance groove cavity. The first connecting end portion is stopped by the upper limiting wall and the lower limiting wall to form a limit on the sliding position of the first connecting end portion. A notch-shaped hole extending along the sliding direction of the wheel seat is provided on the second positioning seat portion. A hanging pin hole is provided on the second connecting end portion. The second connecting end portion is inserted onto the second positioning seat portion along the bottom end of the second positioning seat portion. After the hanging pin hole and the notch-shaped hole are in corresponding positions, a cross pin is inserted to restrict the second connecting end portion on the second positioning seat portion and restrict the first connecting end portion in the sliding space of the first positioning seat portion.

[0008] Preferably, the lower limiting wall is lower than the bottom end of the second positioning seat portion to form a drop.

[0009] Preferably, the first connecting end portion includes two relatively arranged positioning plates. A positioning interval is formed between the two positioning plates. The first positioning seat portion includes an intermediate solid seat block. Limiting grooves are recessed on the lateral side walls of the intermediate solid seat block in the transverse direction, and the upper limiting wall and the lower limiting wall are formed in the limiting grooves. The first connecting end portion is slidably fitted on the intermediate solid seat block through the positioning interval, and the positioning plates are placed in the limiting grooves.

[0010] Preferably, the mounting bracket includes a vertical portion and a base arranged in an L shape. The rear end of the base is integrally formed and connected to the luggage connecting portion. The sliding positioning portion is formed at the bottom of the base. The first positioning seat portion corresponds to the front end position of the base, and the second positioning seat portion corresponds to the rear end position of the base.

[0011] Preferably, a roller braking assembly is provided at the front end of the base. At the front end of the base, there are an articulated seat and a lock block positioning seat arranged opposite to each other up and down. The lock block positioning seat is formed on the first positioning seat portion. The roller braking assembly includes a locking pedal block having a pedal. The locking pedal block is articulated to the articulated seat. Locking convex columns protrude from the lateral sides of the locking pedal block. A plurality of locking slots are arranged along the circumferential direction on the roller. The locking convex columns can be inserted into and withdrawn from the locking slots as the locking pedal block swings, so as to form the locking and unlocking of the locking pedal block on the roller. Locking concave portions and unlocking concave portions are distributed along the corresponding direction of the swinging direction of the locking pedal block on the lock block positioning seat. A positioning slider is slidably arranged on the locking pedal block. One end of the positioning slider is a locking end that abuts against the lock block positioning seat. The other end of the positioning slider abuts against a return spring. The return spring drives the locking end to abut against the lock block positioning seat. The locking end of the positioning slider falling into the locking concave portion forms a braking position for holding the locking pedal block with the locking convex column inserted into the locking slot. The locking end of the positioning slider falling into the unlocking concave portion forms an unlocking position for holding the locking pedal block with the locking convex column retracted into the locking slot.

[0012] Preferably, the second connecting end portion includes two relatively arranged hanging plates, the hanging pin holes are provided on the hanging plates, a positioning groove cavity is formed between the two hanging plates, and the second positioning seat portion includes a positioning seat block inserted in the positioning groove cavity, and the slot-shaped hole is provided on the positioning seat block.

[0013] Preferably, a spring positioning hole is provided on the bottom wall of the air avoidance groove cavity, and the buffer spring is a coil spring, and the buffer spring is inserted into the spring positioning hole.

[0014] By adopting the above technical solution, the wheel seat adopts a sliding design. When the roller on the wheel seat is impacted, the wheel seat slides on the mounting bracket and compresses the buffer spring to achieve buffering. The air avoidance groove of the sliding positioning part provides the wheel seat with corresponding avoidance space to ensure the volume and structural strength of the wheel seat; the wheel seat adopts a sliding design, which has the advantages of stable and reliable operation. The buffer spring is arranged in the air avoidance groove at the bottom of the mounting bracket, so that the buffer spring is more concealed, reducing the risk of interference and damage, and the overall structure is compact. In addition, the structural characteristics are fully utilized, and the air avoidance groove and the middle main seat body are positioned to achieve more reliable sliding of the wheel seat. At the same time, the assembly of the wheel seat and the mounting bracket of the caster is simple and convenient.

[0015] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a reference diagram of a luggage caster in use according to a specific embodiment of the utility model;

[0017] Figure 2 It is a top view of a luggage caster according to a specific embodiment of the utility model;

[0018] Figure 3 for Figure 2 The cross-sectional view taken along line AA;

[0019] Figure 4 This is a structural schematic diagram of a shock-absorbing wheel frame according to a specific embodiment of the utility model;

[0020] Figure 5 for Figure 4 Exploded view of;

[0021] Figure 6 This is a structural schematic diagram of a mounting bracket of a specific embodiment of the utility model;

[0022] Figure 7 This is a structural schematic diagram of a wheel seat in a specific embodiment of the utility model;

[0023] Figure 8 It is a top view of the second specific embodiment of the utility model;

[0024] Figure 9 is Figure 8 a sectional view taken along line B-B in

[0025] Figure 10 the exploded view of the second specific embodiment of the present utility model;

[0026] Figure 11 the structural schematic diagram of the shock-absorbing wheel carrier of the second specific embodiment of the present utility model. Specific embodiments

[0027] See the appendix Figures 1 to 7, a kind of luggage caster disclosed by the utility model includes a shock-absorbing wheel frame and a roller 3. The shock-absorbing wheel frame includes a mounting bracket 1 and a wheel seat 2 which are connected in a relatively movable manner. A buffer spring 4 is arranged between the mounting bracket 1 and the wheel seat 2. The roller 3 is installed on the wheel seat 2. When the roller 3 on the wheel seat 2 is impacted, the wheel seat 2 moves relative to the mounting bracket 1, and at the same time, buffering is achieved through the buffer spring 4. A sliding positioning part is provided at the bottom of the mounting bracket 1, and the wheel seat 2 is configured to be restricted to slide up and down on the sliding positioning part (it should be noted here that the lifting direction is the direction of the X-axis as shown in the figure, that is, the height direction of the luggage caster in the use state). The sliding positioning part includes a first positioning seat part 11 and a second positioning seat part 12. An emptying groove cavity 10 with an open bottom is formed at an interval between the first positioning seat part 11 and the second positioning seat part 12. The wheel seat 2 includes an intermediate main seat body 20 corresponding to the position of the emptying groove cavity 10. One end of the intermediate main seat body 20 is provided with a first connecting end 21 that slidably cooperates with the first positioning seat part 11, and the other end of the intermediate main seat body 20 is provided with a second connecting end 22 that slidably cooperates with the second positioning seat part 12. The roller 3 is installed on the intermediate main seat body 20 through a wheel shaft. The buffer spring 4 is compressed in the emptying groove cavity 10. One end of the buffer spring 4 supports on the intermediate main seat body 20, and the other end of the buffer spring 4 abuts against the mounting bracket 1. The wheel seat 2 is arranged at the bottom position of the mounting bracket 1, and the buffer spring 4 is arranged in the emptying groove cavity 10 at the bottom of the mounting bracket 1, realizing the shielding arrangement of the buffer spring, so that the buffer spring is better protected to ensure the stable and reliable operation of the caster. The design of the emptying groove cavity, on the one hand, realizes position avoidance, ensures the assembly space of the wheel seat 2, meets the large-particle design of the wheel seat 2, and ensures the structural strength of the wheel seat. On the other hand, it provides the installation space for the buffer spring, protects the buffer spring while making the overall structure compact. When in use, when the caster walks on an uneven ground and the roller is impacted, the wheel seat slides on the mounting bracket and compresses the buffer spring, and the buffer spring provides buffering to avoid excessive impact force being transmitted to the box body of the luggage through the mounting bracket. Under the above design, the buffer spring 4 preferably adopts a helical spring to ensure the elasticity of the helical spring. A spring positioning hole 13 is provided on the bottom wall of the emptying groove cavity 10, and the buffer spring 4 is inserted into the spring positioning hole 13. Sufficient assembly space for the buffer spring is realized to ensure the length of the buffer spring. Therefore, the buffer spring can also adopt a torsion spring or a ">" spring sheet design. However, the utility model preferably uses a helical spring with a more reliable structure, and the design of the spring positioning hole can solve the installation space requirement of the helical spring.

[0028] To further ensure the stable and reliable operation of the wheel seat, the intermediate main seat body 20 is in sliding and positioning fit with the clearance groove cavity 10. Specifically, one end of the intermediate main seat body 20 connected to the first connection end 21 is provided with a first positioning wall 201, and one end of the intermediate main seat body 20 connected to the second connection end 22 is provided with a second positioning wall 202. One side wall 101 of the clearance groove cavity 10 transversely connected to the first positioning seat portion 11 is in guiding fit with the first positioning wall 201, and one side wall 102 of the clearance groove cavity 10 transversely connected to the second positioning seat portion 12 is in guiding fit with the second positioning wall 202. The walls of the clearance groove cavity are used to position and slide-guide the intermediate main seat body to ensure the stable and reliable sliding of the wheel seat during installation; make full use of the concave-convex structure design features of the sliding positioning portion to achieve reliable positioning installation and sliding guidance, and the overall structure is compact.

[0029] And under the above design, a simpler installation structure design of the wheel seat can be realized. The first positioning seat portion 11 has an upper limiting wall 111 and a lower limiting wall 112 arranged oppositely up and down. A sliding space is formed between the upper limiting wall 111 and the lower limiting wall 112. The first connecting end portion 21 is inserted into the sliding space along one side of the clearance groove cavity 10. The first connecting end portion 21 is stopped by the upper limiting wall 111 and the lower limiting wall 112 to form the limitation of the sliding position of the first connecting end portion 21. A notch-shaped hole 121 extending along the sliding direction of the wheel seat 2 is provided on the second positioning seat portion 12. A hanging pin hole 221 is provided on the second connecting end portion 22. The second connecting end portion 22 is inserted onto the second positioning seat portion 12 along the bottom end of the second positioning seat portion 12. After the hanging pin hole 221 and the notch-shaped hole 121 are in corresponding positions, a cross pin 5 is inserted. The cross pin 5 is a riveting shaft (the riveting shaft in the figure is in a state where one end is not riveted); this constitutes restricting the second connecting end portion 22 on the second positioning seat portion 12 and restricting the first connecting end portion 21 in the sliding space of the first positioning seat portion 11. During assembly, the first connecting end portion 21 of the wheel seat is inserted into the sliding space between the upper limiting wall 111 and the lower limiting wall 112 by means of the space of the clearance groove cavity 10 without a special fitting design; then the second connecting end portion 22 is inserted onto the second positioning seat portion 12 along the bottom end of the second positioning seat portion 12. After the hanging pin hole 221 provided on the second connecting end portion 22 and the notch-shaped hole 121 are in corresponding positions, the cross pin 5 is inserted, and the installation of the wheel seat is completed; the assembly is simple and convenient. Of course, under the guidance of the present utility model, those skilled in the art can also adopt other structural deformation designs in combination with the common knowledge of the prior art, such as both the first connecting end portion and the second connecting end portion are installed by using notch-shaped holes and cross pins; or the first connecting end portion and the second connecting end portion adopt a detachable hanging part design. After the middle main seat body is placed in place in the clearance groove cavity, the first connecting end portion and the second connecting end portion are installed on the corresponding first positioning seat portion and second positioning seat portion, and the first connecting end portion and the second connecting end portion are fixed to the middle main seat body by using fasteners; and so on. However, under the design of this specific embodiment, the structure is simpler and more compact, with fewer components and convenient assembly operations.

[0030] To more conveniently insert the first connecting end portion into the sliding space, the lower limiting wall 112 is lower than the bottom end of the second positioning seat portion 12 to form a drop I (see the appendix Figure 6 ). This drop forms a larger assembly space.

[0031] The existing wheel brackets are usually designed in an L shape. To facilitate the installation and arrangement of the wheel seats, the mounting bracket 1 includes a vertical portion 1-1 and a base 1-2 arranged in an L shape. The vertical portion 1-1 mounts a vertical shaft, on which a box support cover is mounted, and the box support cover is mounted to the bottom of the luggage. The rear end of the base 1-2 is integrally connected to the luggage connecting portion 1-1. The mounting bracket 1 retains the L-shaped styling design of the traditional wheel bracket. The sliding positioning portion is formed at the bottom of the base 1-2, and the first positioning seat portion 11 is correspondingly located at the front end position of the base 1-2, and the second positioning seat portion 12 is correspondingly located at the rear end position of the base 1-2. That is, as Figures 3 to 6 shown, the bottom of the mounting bracket 1 is designed with a lower front and a higher rear; in addition, the second positioning seat portion is correspondingly located at the rear end position of the base, and the rear end of the base is connected to the luggage connecting portion, having a larger space, which is convenient for the arrangement of the notch-shaped hole 121.

[0032] As an implementation manner of the present invention, the first connection end portion 21 includes two oppositely arranged positioning plates 21-1, a positioning interval 21-2 is formed between the two positioning plates 21-1, the first positioning seat portion 11 includes an intermediate solid seat block 11-1, limiting grooves 11-2 are recessed on the lateral side walls of the intermediate solid seat block 11-1 in the transverse direction, and the upper limiting wall 111 and the lower limiting wall 112 are formed in the limiting grooves 11-2. The first connection end portion 21 is slidably fitted on the intermediate solid seat block 11-1 through the positioning interval 21-2, and the positioning plates 21-1 are placed in the limiting grooves 11-2. It is convenient for processing and has good structural strength. Of course, the first positioning seat portion can also adopt a slot-shaped structure leading to an avoidance cavity, and the two sides of the slot-shaped structure are wall plates, and the first connection end portion is designed as a convex block.

[0033] Similarly, the second connection end portion 22 includes two oppositely arranged lifting plates 22-1, the hanging pin holes 221 are arranged on the lifting plates 22-1, a positioning cavity 22-2 is formed between the two lifting plates 22-1, the second positioning seat portion 12 includes a positioning seat block 12-2 inserted into the positioning cavity 22-2, and the notch-shaped hole 121 is arranged on the positioning seat block 12-2. The second positioning seat portion can also adopt a design in which a positioning sliding slot is formed between two oppositely arranged wall plates, the notch-shaped hole is designed on the wall plates, and the second connection end portion is a sliding plug convex block inserted into the positioning sliding slot.

[0034] As Figures 8 to 11As shown in the figure, another kind of luggage caster disclosed by the utility model is configured with a braking function; a roller braking assembly is provided at the front end of the base 12-2. At the front end of the base 12-2, a hinge seat 14 and a lock block positioning seat 15 are arranged up and down relatively. The first positioning seat part 11 is designed to be placed in front on the base. The bottom end of the first positioning seat part 11 is lower than the bottom end of the second positioning seat part 12. The lock block positioning seat 15 is formed on the first positioning seat part 11. The first positioning seat part 11 can provide the forming positions of the hinge seat and the lock block positioning seat, which is convenient for the forming of the hinge seat 14 and the lock block positioning seat 15; the roller braking assembly includes a locking pedal block 6 with a pedal 61. The locking pedal block 6 is hinged to the hinge seat 14. Locking studs 62 protrude from the horizontal two sides of the locking pedal block 6. A plurality of locking grooves 31 are arranged along the circumferential direction on the roller 3. The locking studs 62 can be inserted into and withdrawn from the locking grooves 31 as the locking pedal block 6 swings, so as to constitute the locking and unlocking of the locking pedal block 6 to the roller 3; the lock block positioning seat 15 is provided with a locking position recess 151 and an unlocking position recess 152 distributed in the corresponding direction along the swinging direction of the locking pedal block 6. A positioning slider 7 is slidably arranged on the locking pedal block 6. The locking pedal block 6 is provided with a mounting hole. One end of the positioning slider 7 is a locking end that abuts against the lock block positioning seat 15. The locking end extends out of the mounting hole. The other end of the positioning slider 7 is limited in the mounting hole and abuts against a return spring 8. The positioning slider 7 uses a clamping foot. The return spring 8 drives the locking end to abut against the lock block positioning seat 15. The locking end of the positioning slider 7 falling into the locking position recess 151 constitutes the braking position for keeping the locking pedal block 6 with the locking studs 62 inserted into the locking grooves 31. The locking end of the positioning slider 7 falling into the unlocking position recess 152 constitutes the unlocking position for keeping the locking pedal block 6 with the locking studs 62 retracted into the locking grooves 31. The dual functions of buffering and braking of the caster are realized, and the two functional structures are reasonably arranged. The locking groove 31 is the interval between two adjacent convex rods 311.

Claims

1. A luggage caster, comprising a shock-absorbing wheel frame and a roller. The shock-absorbing wheel frame includes a mounting bracket and a wheel seat that are relatively movably connected, and a buffer spring is arranged between the mounting bracket and the wheel seat. It is characterized in that: The bottom of the mounting bracket is provided with a sliding positioning part, which includes a first positioning seat part and a second positioning seat part. An emptying groove cavity with an open bottom is formed at an interval between the first positioning seat part and the second positioning seat part. The wheel seat is configured to be restricted to slide up and down on the sliding positioning part. The wheel seat includes an intermediate main seat body corresponding to the position of the emptying groove cavity. One end of the intermediate main seat body is provided with a first connecting end part that slidably cooperates with the first positioning seat part, and the other end of the intermediate main seat body is provided with a second connecting end part that slidably cooperates with the second positioning seat part. The roller is mounted on the intermediate main seat body via a wheel shaft. The buffer spring is compressed in the emptying groove cavity. One end of the buffer spring supports on the intermediate main seat body, and the other end of the buffer spring abuts against the mounting bracket.

2. The luggage caster according to claim 1, wherein: The intermediate main seat body is in sliding positioning cooperation with the emptying groove cavity. One end of the intermediate main seat body connected to the first connecting end part is provided with a first positioning wall, and one end of the intermediate main seat body connected to the second connecting end part is provided with a second positioning wall. One side wall of the emptying groove cavity transversely connected to the first positioning seat part is in guiding cooperation with the first positioning wall, and one side wall of the emptying groove cavity transversely connected to the second positioning seat part is in guiding cooperation with the second positioning wall.

3. The luggage caster according to claim 2, wherein: The first positioning seat part has an upper limiting wall and a lower limiting wall arranged oppositely up and down. A sliding space is formed between the upper limiting wall and the lower limiting wall. The first connecting end part is inserted into the sliding space along one side of the emptying groove cavity. The first connecting end part is stopped by the upper limiting wall and the lower limiting wall to form the limitation of the sliding position of the first connecting end part. A notch-shaped hole extending along the sliding direction of the wheel seat is provided on the second positioning seat part, and a hanging pin hole is provided on the second connecting end part. The second connecting end part is inserted onto the second positioning seat part along the bottom end of the second positioning seat part. After the hanging pin hole and the notch-shaped hole are in corresponding positions, a cross pin is inserted to restrict the second connecting end part on the second positioning seat part and restrict the first connecting end part in the sliding space of the first positioning seat part.

4. The luggage caster according to claim 3, wherein: The lower limiting wall is lower than the bottom end of the second positioning seat part to form a drop.

5. The luggage caster according to claim 3, wherein: The first connecting end part includes two oppositely arranged positioning plates, and a positioning interval is formed between the two positioning plates. The first positioning seat part includes an intermediate solid seat block. Limiting grooves are recessed on the transverse two side walls of the intermediate solid seat block, and the upper limiting wall and the lower limiting wall are formed in the limiting grooves. The first connecting end part is slidably cooperated with the intermediate solid seat block via the positioning interval, and the positioning plates are placed in the limiting grooves.

6. The luggage caster according to claim 4, characterized in that: The mounting bracket includes a vertical part and a base arranged in an L shape. The rear end of the base is integrally formed and connected to the luggage connecting part. The sliding positioning part is formed at the bottom of the base. The first positioning seat part corresponds to the front end position of the base, and the second positioning seat part corresponds to the rear end position of the base.

7. The luggage caster according to claim 6, characterized in that: A roller braking assembly is provided at the front end of the base. At the front end of the base, there are hinge seats and lock block positioning seats arranged vertically opposite to each other. The lock block positioning seat is formed on the first positioning seat portion. The roller braking assembly includes a locking pedal block with a pedal. The locking pedal block is hinged to the hinge seat. Locking studs protrude from the lateral sides of the locking pedal block. A number of locking slots are arranged circumferentially on the roller. The locking studs can be inserted into and withdrawn from the locking slots as the locking pedal block swings, so as to lock and unlock the roller by the locking pedal block. Locking concave portions and unlocking concave portions are distributed on the lock block positioning seat in the corresponding direction of the swinging direction of the locking pedal block. A positioning slider is slidably arranged on the locking pedal block. One end of the positioning slider is a locking end that abuts against the lock block positioning seat. The other end of the positioning slider abuts against a return spring. The return spring drives the locking end to abut against the lock block positioning seat. When the locking end of the positioning slider falls into the locking concave portion, it constitutes a braking position for holding the locking pedal block with the locking studs inserted into the locking slots. When the locking end of the positioning slider falls into the unlocking concave portion, it constitutes an unlocking position for holding the locking pedal block with the locking studs withdrawn from the locking slots.

8. The luggage caster according to claim 3 or 4 or 5, characterized in that: The second connecting end portion includes two relatively arranged lifting plates. Hanging pin holes are provided on the lifting plates. A positioning cavity is formed between the two lifting plates. The second positioning seat portion includes a positioning seat block inserted into the positioning cavity. A notch-shaped hole is provided on the positioning seat block.

9. The caster for luggage according to claim 1, wherein: Spring positioning holes are provided on the bottom wall of the clearance cavity. The buffer spring is a helical spring and is inserted into the spring positioning holes.

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