CN220482985U

CN220482985U - Caster wheel

Info

Publication number: CN220482985U
Application number: CN202321526526.4U
Authority: CN
Inventors: 陈政
Original assignee: Zhejiang Zhongwei Intelligent Furniture Co ltd
Current assignee: Zhejiang Zhongwei Intelligent Furniture Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2024-02-13
Anticipated expiration: 2033-06-14

Abstract

The application relates to a trundle, which relates to the technical field of trundles and comprises a wheel carrier and a rotating rod, wherein two ends of the rotating rod are rotatably connected with a movable wheel; the middle part of the movable wheel is provided with a boss, a positioning groove for inserting and rotating the end part of the rotating rod is formed in the boss, only one limiting ring is arranged on the inner wall of the positioning groove, only one limiting groove for inserting the limiting ring is formed in the rotating rod, the section of the inner wall of the limiting ring is arc-shaped, and the edge of the end part of the rotating rod is a round angle; according to the caster, the contact area between the outer peripheral surface of the rotating rod and the inner wall of the positioning groove is ensured through the matching arrangement of the limiting ring and the limiting groove, so that the sliding and the shaking of the moving wheel in the use process are reduced, and the service life of the caster is prolonged; because the edge of the end part of the rotating rod is a round angle and the section shape of the inner wall of the limiting ring is arc-shaped, the reserved gap between the outer peripheral surface of the rotating rod and the inner wall of the positioning groove is reduced, and the installation stability between the rotating rod and the positioning groove is improved.

Description

Caster wheel

Technical Field

The application relates to the technical field of casters, in particular to a caster.

Background

Casters, also known as plastic casters, pulleys, are devices mounted on the bottom of equipment, machines or furniture, which can be easily moved in a horizontal plane, and which are very convenient to move because they can be turned at will. Casters generally consist of a frame, bearings and swivel wheels made of a wear resistant material such as polyurethane.

In the related art, referring to fig. 1, a caster comprises a frame 4, a connecting shaft 5 and rotating wheels 6 positioned at two ends of the connecting shaft 5, wherein the connecting shaft 5 penetrates through the frame 4, and two ends of the connecting shaft 5 are rotatably connected with the rotating wheels 6; the rotating wheel 6 is provided with a mounting groove 61 for inserting the end part of the connecting shaft 5, the inner wall of the mounting groove 61 is provided with two limiting snap rings 611, the outer circumferential surface of the connecting shaft 5 is provided with an annular clamping groove 51 for inserting the limiting snap rings 611, and the possibility that the end part of the connecting shaft 5 is separated from the inside of the mounting groove 61 is reduced through the matching arrangement of the two limiting snap rings 611 and the annular clamping groove 51.

Because the length of the end part of the connecting shaft inserted into the mounting groove is fixed, and the connecting shaft is provided with the annular clamping grooves for the two limit clamping rings to be inserted and clamped, the two annular clamping grooves and the corresponding limit clamping rings are arranged, so that the connecting shaft is not easy to deviate from the mounting groove, but the contact area between the outer peripheral surface of the connecting shaft inserted into the mounting groove and the inner wall of the mounting groove is smaller; when the swiveling wheel moves on a rugged or bumpy road, the contact area between the connecting shaft and the mounting groove is small, so that the swiveling wheel and the connecting shaft can be assembled unstably due to large shaking between the connecting shaft and the swiveling wheel, and the service life of the caster is influenced.

Disclosure of Invention

The utility model provides an aim at provides a truckle, solves among the above-mentioned correlation technique when the swiveling wheel removes on rugged or bumpy road surface, because connecting axle and mounting groove area of contact are less, probably lead to the great rocking of range between connecting axle and the swiveling wheel, and then cause equipment unstable between swiveling wheel and the connecting axle, influences truckle life's problem.

The application provides a truckle adopts following technical scheme:

the caster comprises a wheel frame and a rotating rod penetrating through the wheel frame, wherein two ends of the rotating rod are rotatably connected with a movable wheel; the middle part of removal wheel is provided with the boss, set up on the boss and supply dwang tip male and pivoted constant head tank, only be provided with a spacing ring on the inner wall of constant head tank, the tip of dwang has only been seted up one and has been supplied spacing ring male spacing recess, the inner wall cross-section shape of spacing ring is the arc, the tip border of dwang is the fillet.

By adopting the technical scheme, when the end part of the rotating rod is smoothly inserted into the positioning groove, the limiting ring on the inner wall of the positioning groove is inserted into the limiting groove on the rotating rod, so that the rotating connection between the rotating rod and the moving wheel can be realized; because only one limit groove is formed on the outer peripheral surface of the rotating rod, the contact area between the outer peripheral surface of the rotating rod inserted into the positioning groove and the inner wall of the positioning groove is ensured, the sliding and shaking of the moving wheel in the use process are reduced, and the service life of the caster is prolonged; meanwhile, the edge of the end part of the rotating rod is a round corner, and the section shape of the inner wall of the limiting ring is arc-shaped, so that a reserved gap between the outer peripheral surface of the rotating rod and the inner wall of the positioning groove is reduced, the installation stability between the rotating rod and the positioning groove is further improved, and the service life of the caster is prolonged.

Optionally, a clearance is provided between the inner side surface of the limiting ring and the limiting groove.

By adopting the technical scheme, due to the arrangement of the yielding gap, the friction between the limiting ring and the inside of the limiting groove is reduced; because the movable wheel is in use, friction exists between the inner wall of the limiting ring and the limiting groove, the continuous friction can lead to the generation of scraps, and the generated scraps are accumulated between the yielding gaps through the arrangement of the yielding gaps, but the normal use of the caster is not influenced, and the service performance of the caster is improved.

Optionally, a retaining surface is arranged on the inner wall of the limiting groove, and the plane of the retaining surface is perpendicular to the outer circumferential surface of the rotating rod.

Through adopting above-mentioned technical scheme, in the use of this truckle, through the setting of stopping face, improve the stopping face on the dwang and cross the possibility that the spacing ring deviate from the constant head tank inside, reduce the possibility that the dwang deviate from the constant head tank inside.

Optionally, the cross section shape of the inner wall of the limit groove is arc-shaped.

By adopting the technical scheme, compared with the traditional square groove, the cross section of the inner wall of the limit groove is arc-shaped, and the limit groove with the arc-shaped cross section can greatly reduce the lubrication requirement and improve the reliability and durability of the plug connection; and the arc-shaped section has the characteristics of excellent deformation resistance and difficult deformation, and can reduce the deformation or damage of the rotating rod in the inserting process, thereby improving the stability and reliability of the rotating rod in inserting.

Optionally, the opening edge of the positioning groove is a round angle.

Through adopting above-mentioned technical scheme, when the dwang inserts inside the constant head tank that corresponds, through setting up that constant head tank opening border is the fillet, be convenient for insert the tip of dwang to the inside of the constant head tank that corresponds.

Optionally, a reinforcing ring sleeved on the outer peripheral surface of the rotating rod is arranged at the position of the wheel frame, which is close to the boss.

Through adopting above-mentioned technical scheme, fixedly be provided with the strengthening ring on the wheel carrier, and the strengthening ring overlaps simultaneously and establish at the outer peripheral face of dwang to this stability of assembling between wheel carrier and the dwang that improves.

Optionally, a plurality of reinforcing ribs are uniformly distributed on the side surface of the movable wheel, which is close to the wheel frame.

By adopting the technical scheme, the structural strength of the movable wheel is improved due to the arrangement of the reinforcing ribs.

Optionally, a reinforcing convex ring is arranged on the side edge of the movable wheel, which is close to the wheel frame.

Through adopting above-mentioned technical scheme, be provided with the strengthening bulge loop at the side border that is close to the wheel carrier of removal wheel to this increases the area of contact of removal wheel and ground, and area of contact's expansion can improve the frictional force between removal wheel and the ground, reduces the slip and rocking of removal wheel in the use, improves the stability of whole equipment in the removal in-process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the cooperation setting of the limiting ring and the limiting groove, as the limiting groove is formed on the outer circumferential surface of the rotating rod, the contact area between the outer circumferential surface of the rotating rod inserted into the positioning groove and the inner wall of the positioning groove is ensured, the sliding and the shaking of the moving wheel in the using process are reduced, and the service life of the caster is prolonged; meanwhile, the edge of the end part of the rotating rod is a round angle and the section shape of the inner wall of the limiting ring is arc-shaped, so that a reserved gap between the outer peripheral surface of the rotating rod and the inner wall of the positioning groove is reduced, and the installation stability between the rotating rod and the positioning groove is further improved.

2. The friction between the limiting ring and the inside of the limiting groove is reduced through the arrangement of the abdication gap; because the movable wheel is in use, friction exists between the inner wall of the limiting ring and the limiting groove, the continuous friction can lead to the generation of scraps, and the generated scraps are accumulated between the yielding gaps through the arrangement of the yielding gaps, but the normal use of the caster is not influenced, and the service performance of the caster is improved.

3. Through the setting of stopping face, and this at the plane of stopping face and dwang's outer peripheral face are perpendicular, and in the use of this truckle, improve the stopping face on the dwang and cross the possibility that the spacing ring deviate from the constant head tank inside, reduce the possibility that the dwang deviate from the constant head tank inside.

Drawings

FIG. 1 is a schematic view of a caster embodying the background art;

FIG. 2 is a schematic overall structure of an embodiment of the present application;

FIG. 3 is a schematic diagram of an exploded structure of an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of an embodiment of the present application showing the engagement of a rotating lever with a moving wheel assembly;

FIG. 5 is an enlarged schematic view of portion A of FIG. 4;

fig. 6 is an enlarged schematic view of the portion B in fig. 4.

In the figure, 1, a wheel frame; 11. a connecting rod; 12. a reinforcing ring; 2. a rotating lever; 21. a limit groove; 211. a stop surface; 3. a moving wheel; 31. a boss; 32. a positioning groove; 321. a limiting ring; 33. reinforcing ribs; 34. reinforcing the convex ring; 4. a frame; 5. a connecting shaft; 51. an annular clamping groove; 6. a rotating wheel; 61. a mounting groove; 611. and a limiting snap ring.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

Examples:

referring to fig. 2 and 3, a caster comprises a wheel frame 1 and a rotating rod 2 penetrating the wheel frame 1, wherein the rotating rod 2 is made of hardware, two ends of the rotating rod 2 are rotatably connected with a moving wheel 3, a connecting rod 11 connected with an article to be moved is fixedly arranged on the wheel frame 1, the bottom side of the article to be moved is fixedly connected with the wheel frame 1 through the connecting rod 11, and the outer peripheral surface of the moving wheel 3 abuts against the ground and rolls when the article to be moved moves.

Referring to fig. 3 and 4, a boss 31 is provided at the middle of the moving wheel 3, a positioning groove 32 for inserting and rotating the end of the rotating rod 2 is provided on the boss 31, a limiting ring 321 is provided on the inner wall of the positioning groove 32, and a limiting groove 21 for inserting the limiting ring 321 is provided on the end of the rotating rod 2; because only one limiting ring is abutted with the corresponding limiting groove 21, the contact area between the outer peripheral surface of the rotating rod 2 inserted into the positioning groove 32 and the inner wall of the positioning groove 32 is increased, the sliding and shaking of the moving wheel 3 in the using process are reduced, the service life of the caster is prolonged,

referring to fig. 4 and 5, the inner wall of the stopper 321 has an arc shape in cross section, and the end edge of the rotation lever 2 has a rounded corner; in order to smoothly insert the end of the rotating rod 2 into the positioning groove 32, an installation gap between the outer circumferential surface of the rotating rod 2 and the inner wall of the positioning groove 32 is required, and since the edge of the end of the rotating rod 2 is a round corner and the cross section of the inner wall of the limiting ring 321 is in an arc-shaped matching arrangement, the installation gap between the outer circumferential surface of the rotating rod 2 and the inner wall of the positioning groove 32 can be further reduced, thereby further improving the stability of the assembly between the rotating rod 2 and the positioning groove 32.

Referring to fig. 4 and 6, the opening edge of the positioning groove 32 is rounded; in the process of inserting the rotating rod 2 into the positioning groove 32, the opening edge of the positioning groove 32 is provided with a round angle, so that the end part of the rotating rod 2 can be conveniently inserted into the corresponding positioning groove 32.

Referring to fig. 4 and 5, a relief gap exists between the inner side surface of the stopper ring 321 and the stopper groove 21; due to the arrangement of the yielding clearance, friction between the limiting ring 321 and the inside of the limiting groove 21 is reduced; because the rotating rod 2 is usually made of hardware, the movable wheel 3 is usually made of rubber, polyurethane and other materials, friction can be generated when the inner wall of the limiting ring 321 rotates relative to the limiting groove 21, and the continuous friction can possibly cause generation of scraps, and the generated scraps can be accumulated in the yielding gap through the arrangement of the yielding gap, so that the normal use of the caster is not influenced, and the service performance of the caster is improved.

Referring to fig. 4 and 5, a retaining surface 211 is provided on the inner wall of the limit groove 21, and the plane of the retaining surface 211 is perpendicular to the outer circumferential surface of the rotating rod 2; by providing the retaining surface 211, the possibility that the retaining surface 211 on the rotating rod 2 is separated from the inside of the positioning groove 32 beyond the limiting ring 321 is improved, and the possibility that the rotating rod 2 is separated from the inside of the positioning groove 32 is reduced. The cross section of the inner wall of the limit groove 21 is arc-shaped. Compared with the traditional square groove, the limiting groove 21 with the arc-shaped cross section can greatly reduce the lubrication requirement and improve the reliability and durability of the plugging; and the arc-shaped section has the characteristics of excellent deformation resistance and difficult deformation, and can reduce the deformation or damage of the rotating rod 2 in the plugging process, thereby improving the stability and reliability of the rotating rod 2 in plugging.

Referring to fig. 3 and 4, the wheel frame 1 is provided with a reinforcing ring 12 sleeved on the outer circumferential surface of the rotating rod 2 at a position close to the boss 31, and the reinforcing ring 12 and the wheel frame 1 are integrally injection-molded, thereby improving the assembly stability between the wheel frame 1 and the rotating rod 2. A plurality of reinforcing ribs 33 are uniformly distributed on the side surface of the moving wheel 3, which is close to the wheel frame 1, and the reinforcing ribs 33 and the moving wheel 3 are integrally processed and formed, so that the structural strength of the moving wheel 3 is improved; the side edge of the moving wheel 3, which is close to the wheel frame 1, is provided with the reinforcing convex ring 34, so that the contact area between the moving wheel 3 and the ground is increased, the friction between the moving wheel 3 and the ground can be increased by expanding the contact area, the sliding and shaking of the moving wheel 3 in the using process can be reduced, and the stability of the whole equipment in the moving process can be improved.

The implementation principle of the embodiment of the application is as follows:

in the process of assembling the caster, the assembly between the wheel frame 1 and the rotating rod 2 is firstly completed, the rotating rod 2 penetrates through the wheel frame 1 and the reinforcing ring 12 on the wheel frame 1, then two ends of the wheel frame 1 are respectively inserted into the positioning grooves 32 on the corresponding movable wheels 3, and meanwhile, the limiting rings 321 on the inner walls of the positioning grooves 32 are inserted into the limiting grooves 21 on the rotating rod 2, so that the caster is assembled.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The caster comprises a wheel frame (1) and a rotating rod (2) penetrating through the wheel frame (1), wherein two ends of the rotating rod (2) are rotatably connected with a movable wheel (3); the novel rotary wheel is characterized in that a boss (31) is arranged in the middle of the rotary wheel (3), a positioning groove (32) for inserting and rotating the end part of the rotary rod (2) is formed in the boss (31), only one limiting ring (321) is arranged on the inner wall of the positioning groove (32), only one limiting groove (21) for inserting the limiting ring (321) is formed in the end part of the rotary rod (2), the section of the inner wall of the limiting ring (321) is arc-shaped, and the edge of the end part of the rotary rod (2) is a round corner.

2. A castor according to claim 1, characterized in that a relief gap is present between the inner side of the stop collar (321) and the stop groove (21).

3. A castor according to claim 2, characterized in that the inner wall of the limit groove (21) is provided with a retaining surface (211), the plane of the retaining surface (211) being perpendicular to the outer circumferential surface of the swivel lever (2).

4. A castor according to claim 2, wherein the cross-sectional shape of the inner wall of the limit groove (21) is arc-shaped.

5. A castor according to claim 1, wherein the open edge of the detent (32) is rounded.

6. A castor according to claim 1, characterized in that the wheel carrier (1) is provided with a reinforcing ring (12) which is arranged around the outer circumference of the swivel rod (2) at a position close to the boss (31).

7. A castor according to claim 1, characterized in that the side of the mobile wheel (3) close to the wheel carrier (1) is evenly distributed with a plurality of stiffening ribs (33).

8. A castor according to claim 1, characterized in that the side edges of the mobile wheel (3) near the wheel frame (1) are provided with stiffening collars (34).