360-degree suspended self-return trundle
By designing a 360° suspended automatic return caster connected to a rotating shaft deviating from the rotation center and multiple equally spaced elastic parts, the problems of inaccurate redirection and easy structure of the universal caster in the prior art are solved, and automatic return and The effect of uniform stress.
Patent Information
- Application Number
- CN202421057411.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing 360-degree universal casters are difficult to accurately return to position during transportation and storage. The automatic return casters on the market are complex in structure or high in cost, resulting in low popularity. The eccentric wheel and tension spring structure are easily damaged and the stress distribution is Unevenness increases the difficulty of handling.
Design a 360° suspended automatic return caster including a wheel body, mounting plate, elliptical block and elastic frame. It is connected by a rotating shaft, elliptical block and multiple equally spaced elastic parts to ensure uniform pressure transmission and avoid elastic force. Increase, use elastic parts to achieve automatic position return.
The automatic return function is realized to accurately return to the position without manpower, avoiding the eccentricity of increasing elastic force, and improving the convenience of handling and structural reliability.
Smart Images
Figure CN222179111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a 360-degree suspended automatic return caster. Background Art
[0002] The application of common 360-degree universal casters, such as aviation boxes, performance boxes, carts and tool boxes, usually requires stacking boxes during transportation and storage. During the lifting process, when the wheels are suspended or without force, the brackets and casters often cannot return to their original positions, and the casters are often difficult to accurately align with the fixed grooves on the lower box surface. Human power is required to straighten and align them to ensure that the casters of the upper box can smoothly fall into the grooves. Therefore, this type of casters currently cause great inconvenience during stacking, transportation and storage.
[0003] There is an automatic return caster on the market that is designed based on the magnetic return principle. This design uses the mutual repulsion mechanism between the south pole and the north pole. However, due to the complex structure and high cost of magnets, the overall price of this caster remains high, which limits its popularity in the market.
[0004] Another solution is to use an eccentric wheel and a tension spring structure. Specifically, there are two structures: one is to compress and expand the tension spring by rotating the eccentric wheel, and the other is to directly connect the tension spring to the eccentric wheel (column). Both structures are based on a single tension spring design. Since the tension spring is a consumable part, once it is damaged, the entire structure will not work. In addition, as the distance between the eccentric wheel and the tension spring increases, the stretching amplitude of the tension spring and the required tension will also increase accordingly, resulting in uneven force distribution during the use of the caster, which is prone to deviation from the straight line, thereby increasing the difficulty of control.
[0005] The third scheme combines the design of spring sheet and eccentric wheel. This structure has less elastic force at the two ends and greater elastic force in the middle. However, it still inherits the shortcomings and deficiencies of the eccentric wheel and tension spring structure. Summary of the invention
[0006] The purpose of the utility model is to provide a 360° suspended automatic return caster to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A 360° suspended automatic return caster comprises a wheel body, a mounting plate, an elliptical block and an elastic frame, wherein the wheel body is rotatably connected to the mounting plate, the mounting plate is provided with a rotating shaft, the rotating shaft deviates from the rotation center between the wheel body and the mounting plate, the center of the elliptical block is placed on the rotating shaft and can rotate relative to the rotating shaft, the elastic frame comprises an inner semicircular frame and an outer semicircular frame, the centers of the inner semicircular frame and the outer semicircular frame are both located on the rotation center, the inner semicircular frame and the outer semicircular frame are connected by an elastic member, the two ends of the inner semicircular frame respectively contact the two ends of the long axis direction of the elliptical block, and the outer semicircular frame is fixedly connected to the wheel body.
[0008] Furthermore, there are a plurality of elastic members, and the elastic members are placed between the inner semicircular frame and the outer semicircular frame and are arranged at equal intervals.
[0009] Furthermore, the elastic member is a spring member.
[0010] Furthermore, a rotating ball is arranged between the wheel body and the mounting plate.
[0011] Furthermore, the wheel body is provided with a hook hole, the outer semicircular frame is provided with a hook, and the hook is placed in the hook hole to achieve a fixed connection between the wheel body and the outer semicircular frame.
[0012] The beneficial effect of the utility model is that in the utility model, when the wheel body is subjected to an external force F to rotate, the external force F is transmitted to the inner semicircular frame of the elastic frame. Under the cooperative action of the inner semicircular frame, the elliptical block and the pressure F, the elliptical block rotates and the elastic member is compressed. Because the inner semicircular frame and the outer semicircular frame are both semicircular in shape, the pressure F is evenly stressed when transmitted to the elastic frame, and there will be no eccentricity due to increased elastic force. In the suspended state of the automatic return caster without force, the elastic member reverses the tension F on the elliptical block, thereby pushing the wheel body and the mounting plate to return. Due to the return structure, there is no need to rely on manual labor to bring the wheel back to the desired position, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 This is a schematic diagram of the structure of the automatic return caster of the utility model;
[0015] Figure 2 This is a schematic diagram of the explosion structure of the automatic return caster of the utility model;
[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the automatic return caster of the utility model;
[0017] Figure 4 for Figure 3 Enlarged view of part A in the middle;
[0018] Figure 5 It is a schematic diagram of the state of the wheel body being subjected to external force F;
[0019] Figure 6 It is a schematic diagram of the internal structure of the wheel body after it rotates under the external force F;
[0020] Figure 7 It is a schematic diagram of the internal structure of the wheel body after it rotates back to its original position.
[0021] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0024] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.
[0025] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0026] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0027] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.
[0028] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0029] like Figures 1 to 4 As shown, a 360° suspended automatic return caster includes a wheel body 1, a mounting plate 2, an elliptical block 3 and an elastic frame 4, the wheel body 1 is rotatably connected to the mounting plate 2, the mounting plate 2 is provided with a rotating shaft 21, the rotating shaft 21 deviates from the rotation center between the wheel body 1 and the mounting plate 2, the center of the elliptical block 3 is placed on the rotating shaft 21 and can rotate relative to the rotating shaft 21, the elastic frame 4 includes an inner semicircular frame 41 and an outer semicircular frame 42, the centers of the inner semicircular frame 41 and the outer semicircular frame 42 are both located on the rotation center, the inner semicircular frame 41 and the outer semicircular frame 42 are connected by an elastic member 43, the two ends of the inner semicircular frame 41 respectively contact the two ends of the long axis direction of the elliptical block 3, and the outer semicircular frame 42 is fixedly connected to the wheel body 1.
[0030] In the present invention, when the wheel body is subjected to an external force F, it rotates (see Figure 5 ), the external force F is transmitted to the inner semicircular frame of the elastic frame. Under the cooperation of the inner semicircular frame, the elliptical block and the pressure F, the elliptical block rotates and the elastic member is compressed (see Figure 6), because the inner and outer semicircular frames are both semicircular, the pressure F is evenly applied to the elastic frame, and there will be no eccentricity due to the increase of elastic force. When the automatic return caster is suspended without force, the reverse tension F of the elastic member is applied to the elliptical block, thereby pushing the wheel body and the mounting plate back to their original position (see Figure 7 ), due to the return structure, there is no need to rely on manual labor to bring the wheels back to the required position, which is convenient and quick.
[0031] As a further solution of the present invention: there are a plurality of elastic members 43 , and the elastic members 43 are placed between the inner semicircular frame 41 and the outer semicircular frame 42 and are arranged at equal intervals.
[0032] As a further solution of the present invention: the elastic member 43 is a spring member. Of course, the elastic member here can also be a member made of elastic materials such as a spring sheet or rubber elasticity.
[0033] As a further solution of the present invention: a rotating ball 5 is arranged between the wheel body 1 and the mounting plate 2. The ball is arranged here so that the wheel body and the mounting plate can rotate smoothly.
[0034] As a further solution of the utility model: the wheel body 1 is provided with a hook hole 11, the outer semicircular frame 42 is provided with a hook 421, and the hook is placed in the hook hole to achieve a fixed connection between the wheel body and the outer semicircular frame. Of course, it can also be fixed by riveting, welding, screws and the like.
[0035] Regarding the embodiments of the present utility model, it should also be noted that, in the absence of conflict, the embodiments of the present utility model and the features therein can be combined with each other to obtain new embodiments.
[0036] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. The protection scope of the utility model shall be based on the protection scope of the claims. Although the utility model has been disclosed as a preferred embodiment, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.
Claims
1. A 360° suspended automatic return caster, characterized in that: It includes a wheel body, a mounting plate, an elliptical block and an elastic frame, the wheel body is rotatably connected with the mounting plate, the mounting plate is provided with a rotating shaft, the rotating shaft deviates from the rotation center between the wheel body and the mounting plate, the center of the elliptical block is placed on the rotating shaft and can rotate relative to the rotating shaft, the elastic frame includes an inner semicircular frame and an outer semicircular frame, the centers of the inner semicircular frame and the outer semicircular frame are both located on the rotation center, the inner semicircular frame and the outer semicircular frame are connected by an elastic member, the two ends of the inner semicircular frame respectively contact the two ends of the long axis direction of the elliptical block, and the outer semicircular frame is fixedly connected to the wheel body.
2. The 360° suspended automatic return caster according to claim 1, characterized in that: There are a plurality of elastic members, and the elastic members are placed between the inner semicircular frame and the outer semicircular frame and are arranged at equal intervals.
3. The 360° suspended automatic return caster according to claim 2, characterized in that: The elastic member is a spring member.
4. The 360° suspended automatic return caster according to claim 1, characterized in that: A rotating ball is arranged between the wheel body and the mounting plate.
5. The 360° suspended automatic return caster according to claim 4, characterized in that: The wheel body is provided with a hook hole, the outer semicircular frame is provided with a hook, and the hook is placed in the hook hole to achieve fixed connection between the wheel body and the outer semicircular frame.