Trundle structure

Abstract

The utility model discloses a trundle structure which comprises an installation wheel seat, a supporting mechanism is installed below the installation wheel seat through a bearing, a guiding frame is fixed to the lower end of the supporting mechanism, a buffering mechanism is installed between the supporting mechanism and the guiding frame, and idler wheel assemblies are installed on the two sides of the supporting mechanism. A clamping mechanism is installed in the guide frame, and a pushing mechanism is installed on the surface of the guide frame. The movable wheel can be conveniently and quickly inserted and mounted through the mounting wheel seat, the movable push block can be pushed to move in the guide frame by pressing the pushing mechanism, and when the pushing mechanism clamps the movable push block, the movable push block can drive the connecting plate and the inserting block to be inserted among the multiple sets of locking clamping blocks, so that the movable wheel is effectively and conveniently locked, and the service life of the movable wheel is prolonged. The use stability of the moving wheels is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, in particular to a caster structure. Background Art

[0002] Universal wheels are so-called movable casters. Their structure allows horizontal rotation and are widely used in various machines and equipment. They are mainly used to reduce the friction of equipment or machines during movement, enhance the flexibility and stability of rotation, and can easily cope with different terrains and different steering requirements.

[0003] When the existing universal wheels are in use, some universal wheels will be equipped with a brake mechanism, through which the universal wheels can be simply limited in position. However, most of the current brake structures use a fixed plate that contacts the wheel surface. After long-term use, the surface of some wheel surfaces is worn and the friction is reduced, resulting in instability during braking and easy rotation when pushed. Therefore, we propose a caster structure to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a caster structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A caster structure includes a mounting wheel seat, a support mechanism is installed below the mounting wheel seat through a bearing, a guide frame is fixed to the lower end of the support mechanism, a buffer mechanism is installed between the support mechanism and the guide frame, roller assemblies are installed on both sides of the support mechanism, a locking mechanism is installed inside the guide frame, and a pushing mechanism is installed on the surface of the guide frame.

[0007] Preferably, the supporting mechanism includes a connecting shaft, a connecting shaft is installed below the mounting wheel seat through a bearing, a first mounting block is fixed below the connecting shaft, and a second mounting block is installed below the first mounting block. The overall strength of the mounting wheel seat can be increased by the first mounting block and the second mounting block.

[0008] Preferably, a shielding plate is fixed between the connecting shaft and the first mounting block, and the cross section of the shielding plate is arranged to be arc-shaped, so that the aesthetics can be conveniently improved by the shielding plate.

[0009] Preferably, the buffer mechanism includes a fixed block, the lower surface of the connecting shaft is fixedly connected to the fixed block, and a telescopic rod is installed between the outer side of the fixed block and the guide frame, the surface of the telescopic rod is sleeved with a buffer spring, and both ends of the buffer spring are in contact with the fixed block and the surface of the guide frame, so that buffering and shock absorption can be achieved through the telescopic rod and the buffer spring.

[0010] Preferably, the roller assembly includes a moving wheel, moving wheels are installed on both sides of the second mounting block, and multiple groups of locking blocks are equidistantly arranged on the inner side wall of the moving wheel. The moving wheel can be conveniently locked by a circle of locking blocks equidistantly arranged on the inner side wall of the moving wheel.

[0011] Preferably, the locking mechanism includes a movable push block, the inner wall of the guide frame is in contact with the movable push block, and both sides of the movable push block are fixedly connected with connecting plates, the surface of the connecting plate is fixedly connected with a plug-in block, the surface of the movable push block is provided with a groove, and the inner wall of the groove is welded to one end of a return spring, and the other end of the return spring is welded to the inner wall of the guide frame, and the movable push block as a whole can be easily reset by the elastic force of the return spring itself.

[0012] Preferably, the pushing mechanism includes an articulated push rod, both sides of the second mounting block are hinged to one end of the articulated push rod, and the other end of the articulated push rod is fixedly connected to a toggle piece, the cross-section of the toggle piece is set to a V shape, and the surface of the toggle piece is provided with anti-slip grooves, and a limiting block is fixed below the articulated push rod, and the cross-section of the toggle piece is set to a V shape, which facilitates the pressing of the toggle piece, and the anti-slip grooves on the surface of the toggle piece can increase the surface friction of the toggle piece.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The device can be quickly plugged in and installed by installing the wheel seat, and the moving push block can be pushed to move in the guide frame by pressing the pushing mechanism. When the pushing mechanism engages the moving push block, it can drive the connecting plate and the plug-in block to be inserted between multiple sets of locking blocks, which effectively and conveniently locks the moving wheel and increases the stability of the moving wheel when in use.

[0015] 2. The device can shield and protect the second mounting block as a whole by connecting the rotating shaft and the shielding plate fixedly installed between the first mounting block. At the same time, by connecting the telescopic rod and the buffer spring installed between the rotating shaft and the guide frame, the movable wheel can be conveniently shock-absorbed and buffered during use, thereby increasing the service life of the movable wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram of a caster structure proposed by the utility model;

[0017] Figure 2 A three-dimensional back view schematic diagram of a caster structure proposed by the utility model;

[0018] Figure 3 for Figure 1 A three-dimensional exploded schematic diagram of the second mounting block and the moving wheel structure;

[0019] Figure 4 for Figure 1 A three-dimensional schematic diagram of the movable push block and the articulated push rod structure.

[0020] In the figure: 1. Install the wheel seat;

[0021] 2. Support mechanism; 21. Connecting shaft; 22. First mounting block; 23. Second mounting block; 24. Shielding plate;

[0022] 3. Buffer mechanism; 31. Fixed block; 32. Telescopic rod; 33. Buffer spring;

[0023] 4. Roller assembly; 41. Moving wheel; 42. Locking block;

[0024] 5. Guide frame;

[0025] 6. Clamping mechanism; 61. Moving push block; 62. Connecting plate; 63. Plug-in block; 64. Reset spring;

[0026] 7. Pushing mechanism; 71. Articulated push rod; 72. Toggle piece; 73. Limiting block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figures 1-4 A caster structure includes a wheel seat 1, a support mechanism 2 is installed below the wheel seat 1 through a bearing, the wheel seat 1 and the support mechanism 2 are integrally mounted with a bearing, so that the support mechanism 2 can be conveniently rotated horizontally as a whole, and a guide frame 5 is fixed to the lower end of the support mechanism 2, a buffer mechanism 3 is installed between the support mechanism 2 and the guide frame 5, roller assemblies 4 are installed on both sides of the support mechanism 2, a locking mechanism 6 is installed inside the guide frame 5, and a pushing mechanism 7 is installed on the surface of the guide frame 5.

[0029] Further, see Figure 1 and Figure 3 It can be known that the supporting mechanism 2 includes a connecting shaft 21, and the connecting shaft 21 is installed below the mounting wheel seat 1 through a bearing, and a first mounting block 22 is fixed below the connecting shaft 21, and a second mounting block 23 is installed below the first mounting block 22. The second mounting block 23 can facilitate the installation of the entire movable wheel 41.

[0030] Further, see Figure 2 and Figure 3It can be known that a shielding plate 24 is fixed between the connecting rotating shaft 21 and the first mounting block 22, and the cross-section of the shielding plate 24 is set to be arc-shaped. By setting the cross-section of the shielding plate 24 to be arc-shaped, it is convenient to shield and protect the entire second mounting block 23.

[0031] Furthermore, referring to Figure 1 and Figure 3 It can be known that the buffer mechanism 3 includes a fixed block 31. The lower surface of the connecting rotating shaft 21 is fixedly connected to the fixed block 31. An expansion link 32 is installed between the outer side of the fixed block 31 and the guiding frame 5. A buffer spring 33 is sleeved on the surface of the expansion link 32, and both ends of the buffer spring 33 are in contact with the surfaces of the fixed block 31 and the guiding frame 5. By means of the expansion link 32 and the buffer spring 33, it can play a role in buffering and shock absorption when the moving wheel 41 is in use, and improve the service life of the moving wheel 41.

[0032] Furthermore, referring to Figure 1 and Figure 3 It can be known that the roller assembly 4 includes moving wheels 41. Moving wheels 41 are installed on both sides of the second mounting block 23, and a plurality of locking blocks 42 are equidistantly arranged on the inner side wall of the moving wheels 41. By means of the plurality of locking blocks 42 equidistantly arranged on the inner side of the moving wheels 41, it is convenient to lock the moving wheels 41.

[0033] Furthermore, referring to Figure 3 and Figure 4 It can be known that the engaging mechanism 6 includes a moving push block 61. The moving push block 61 abuts against the inner wall of the guiding frame 5. Both sides of the moving push block 61 are fixedly connected with connecting plates 62. A plug-in block 63 is fixedly connected to the surface of the connecting plate 62. The surface size of the plug-in block 63 is the same as the spacing between the plurality of locking blocks 42, so that the plug-in block 63 can be inserted between the plurality of locking blocks 42 to facilitate locking the moving wheels 41. A groove is formed on the surface of the moving push block 61, and one end of a return spring 64 is welded to the inner wall of the groove, and the other end of the return spring 64 is welded to the inner wall of the guiding frame 5. By means of the elastic force of the return spring 64 itself, it is convenient to push the moving push block 61 to reset.

[0034] Furthermore, referring to Figure 3 and Figure 4It can be known that the pushing mechanism 7 includes an articulated push rod 71, both sides of the second mounting block 23 are hinged to one end of the articulated push rod 71, and the other end of the articulated push rod 71 is fixedly connected with a toggle piece 72, the cross-section of the toggle piece 72 is set to a V-shape, and the surface of the toggle piece 72 is provided with anti-slip grooves, and a limiting block 73 is fixed below the articulated push rod 71. A recess matched with the articulated push rod 71 is provided on the surface of the movable push block 61, and when the articulated push rod 71 is squeezed with the recess, the movable push block 61 can be pushed to move, and the limiting block 73 is engaged with the surface of the recess, which can limit the function of the movable push block 61.

[0035] Working principle: When the utility model is in use, when the wheel seat 1 is installed, according to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4 By installing the wheel seat 1, the mobile wheel 41 can be installed as a whole, so that when the mobile wheel 41 rolls, the elastic force of the buffer spring 33 can make the telescopic rod 32 move slightly, which plays a role of buffering and shock absorption. At the same time, when the mobile wheel 41 needs to be locked, by pressing the toggle piece 72, the toggle piece 72 can drive the hinged push rod 71 to move along the surface of the guide frame 5. At this time, the hinged push rod 71 will squeeze the surface of the mobile push block 61. When the mobile push block 61 is squeezed, it will drive the connecting plate 62 and the plug block 63 to move along the inside of the guide frame 5 and reset it. The spring 64 is in a compressed state. When the limit block 73 engages with the groove provided inside the moving push block 61, the connecting plate 62 can drive the plug-in block 63 to be inserted between the multiple sets of locking blocks 42, so as to facilitate locking the moving wheel 41. When the moving wheel 41 needs to move, the hinged push rod 71 can drive the limit block 73 away from the surface of the moving push block 61 by toggling the toggle piece 72. At this time, the elastic force of the reset spring 64 can push the moving push block 61 to reset as a whole, so that the connecting plate 62 drives the plug-in block 63 away from the multiple sets of locking blocks 42.

[0036] The above is the entire working principle of the utility model.

[0037] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0038] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0039] In the present utility model, unless otherwise stated, directional terms such as "up and down, left and right, front and back, inside and outside, vertical and horizontal" included in the terms only represent the directions of the terms in the normal use state, or the common names understood by those skilled in the art, and should not be regarded as limitations on the terms. At the same time, numerical terms such as "first", "second" and "third" do not represent specific quantities and orders, but are only used for name distinction. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or device.

Claims

1. A caster structure, comprising a mounting wheel seat (1), characterized in that: A support mechanism (2) is mounted below the mounting wheel seat (1) via a bearing, and a guide frame (5) is fixed to the lower end of the support mechanism (2), a buffer mechanism (3) is mounted between the support mechanism (2) and the guide frame (5), roller assemblies (4) are mounted on both sides of the support mechanism (2), a locking mechanism (6) is mounted inside the guide frame (5), and a pushing mechanism (7) is mounted on the surface of the guide frame (5).

2. A caster structure according to claim 1, characterized in that: The support mechanism (2) comprises a connecting shaft (21), the connecting shaft (21) being mounted below the mounting wheel seat (1) via a bearing, a first mounting block (22) being fixed below the connecting shaft (21), and a second mounting block (23) being mounted below the first mounting block (22).

3. A caster structure according to claim 2, characterized in that: A shielding plate (24) is fixed between the connecting shaft (21) and the first mounting block (22), and the cross section of the shielding plate (24) is arranged to be arc-shaped.

4. A caster structure according to claim 2, characterized in that: The buffer mechanism (3) comprises a fixed block (31), the lower surface of the connecting shaft (21) is fixedly connected to the fixed block (31), and a telescopic rod (32) is installed between the outer side of the fixed block (31) and the guide frame (5), and a buffer spring (33) is sleeved on the surface of the telescopic rod (32), and both ends of the buffer spring (33) are in contact with the surfaces of the fixed block (31) and the guide frame (5).

5. The caster structure according to claim 2, characterized in that: The roller assembly (4) comprises a moving wheel (41), the moving wheels (41) are mounted on both sides of the second mounting block (23), and a plurality of groups of locking blocks (42) are arranged at equal distances on the inner side walls of the moving wheel (41).

6. The caster structure according to claim 1, characterized in that: The engaging mechanism (6) comprises a movable push block (61), the inner wall of the guide frame (5) abuts against the movable push block (61), and both sides of the movable push block (61) are fixedly connected to connecting plates (62), and the surface of the connecting plate (62) is fixedly connected to a plug-in block (63), and a groove is formed on the surface of the movable push block (61), and the inner wall of the groove is welded to one end of a return spring (64), and the other end of the return spring (64) is welded to the inner wall of the guide frame (5).

7. The caster structure according to claim 2, characterized in that: The pushing mechanism (7) comprises an articulated push rod (71), the two sides of the second mounting block (23) are articulated to one end of the articulated push rod (71), and the other end of the articulated push rod (71) is fixedly connected to a toggle plate (72), the cross section of the toggle plate (72) is arranged in a V shape, and the surface of the toggle plate (72) is provided with anti-slip grooves, and a limit block (73) is fixed below the articulated push rod (71).

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