Trundle assembly and luggage case

By designing the obtuse angle structure of the inclined connector and the buffer member in the caster assembly, the problem that the buffer member can only be vertically cushioned in the prior art is solved, effective cushioning of the inclined and lateral forces is achieved, and the comfort and stability of the suitcase are improved.

CN223266546UActive Publication Date: 2025-08-26GUANGDONG JINLONG LUGGAGE ACCESSORIES CO LTD
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Patent Information

Application Number
CN202422874741.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-08-26
Estimated Expiration
2034-11-25

AI Technical Summary

Technical Problem

The buffer parts of existing casters can only provide buffering to the suitcase in the vertical direction, and cannot effectively buffer the non-vertical force, resulting in breakage and discomfort when used on uneven roads.

Method used

A tilted connection member is designed, which is hinged to the mounting frame through the first end and the second end is hinged to the caster, and a buffer member is provided between the connector and the mounting frame to form an obtuse-angle structure, and the buffer member is combined with the buffer member to buffer the inclined and vertical forces.

Benefits of technology

It effectively cushions the caster's stress in the inclination and transverse direction, reduces the fracture situation, and improves the comfort of the suitcase dragging.

✦ Generated by Eureka AI based on patent content.

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Abstract

The trundle assembly comprises a fixing seat, a mounting frame and a trundle, an inserting rod is arranged above the mounting frame, the fixing seat is inserted into the inserting rod, the trundle assembly is characterized by further comprising a connecting piece and a second rotating shaft, the first end of the second rotating shaft is hinged to the lower end of the mounting frame through a first rotating shaft, and the second end of the second rotating shaft is hinged to the trundle. An obtuse angle is formed between the connecting piece and the inserting rod; the two ends of the buffering piece are connected with the mounting frame and the connecting piece correspondingly, and the buffering piece is located above the second end. In the process of dragging the luggage case, vibration borne by the trundles is conducted to the connecting pieces, the obliquely-arranged connecting pieces are combined with the buffering pieces so that stress in the inclined direction and the vertical direction can be effectively buffered, in other words, stress in the inclined direction and the transverse direction of the trundle assembly can be buffered, and the service life of the trundle assembly is prolonged. The situation that the trundle assembly is fractured in the inclined or transverse direction is reduced, and the comfort degree when the luggage case is dragged is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster assembly and a luggage case. Background Art

[0002] A suitcase is a type of luggage used to carry items when traveling. It's typically used to store clothing, personal care products, and souvenirs needed for travel. To facilitate mobility, suitcases are often equipped with casters to facilitate movement. However, these casters often require shock-absorbing elements to enhance comfort and provide cushioning protection.

[0003] The buffer members in existing casters are generally arranged vertically in the casters, and play a certain buffering and protective role for the suitcase and the casters in the length extension direction of the buffer members during the process of dragging the suitcase. However, most of the ground is uneven, and the suitcase is often subjected to forces in other directions during the dragging process. The buffer members in existing casters cannot effectively buffer this part of the force. Utility Model Content

[0004] The utility model provides a caster assembly, aiming to solve at least one of the technical problems existing in the prior art.

[0005] The technical solution of the first aspect of the present invention relates to a caster assembly, comprising a fixing seat, a mounting frame and a caster, wherein an insertion rod is provided above the mounting frame, and the fixing seat is plugged into the insertion rod, and the caster assembly is characterized in that it further comprises:

[0006] A connecting member, a first end of which is hinged to the lower end of the mounting frame via a first rotating shaft, and a second end of which is hinged to the second rotating shaft on the caster, wherein the connecting member is tilted and forms an obtuse angle with the insertion rod;

[0007] The buffer component has two ends respectively connected to the mounting frame and the connecting component and is located above the second end.

[0008] According to some embodiments of the present invention, the connecting member is inclined from top to bottom from the first end toward the second end.

[0009] According to some embodiments of the present invention, the connecting member includes a first sleeve portion, a second sleeve portion and a connecting plate, the first sleeve portion is connected to the second sleeve portion through the connecting plate, the first sleeve portion is arranged at the first end, the second sleeve portion is arranged at the second end, and the buffer member is arranged above the second sleeve portion.

[0010] According to some embodiments of the present invention, two of the first sleeve parts and two of the connecting plates are provided, and the two first sleeve parts are each connected to the second sleeve part through one connecting plate. The two first sleeve parts are provided on both sides below the mounting frame and are both hinged to the mounting frame through the first rotating shaft.

[0011] According to some embodiments of the present invention, the mounting frame includes a third sleeve portion and a shell, the third sleeve portion is vertically arranged, the insertion rod is inserted into the third sleeve portion, the shell is connected to the third sleeve portion and is located above the second sleeve portion, and the two ends of the buffer are respectively connected to the second sleeve portion and the shell.

[0012] According to some embodiments of the present invention, both the second sleeve portion and the shell are provided with limiting columns, and the two limiting columns are used to limit the buffer member between the second sleeve portion and the shell.

[0013] According to some embodiments of the present invention, the second sleeve portion is provided with a protrusion, and the shell is provided with an annular groove. When the second sleeve portion rotates, the protrusion can move in the annular groove.

[0014] According to some embodiments of the present invention, a limiting surface is provided on the annular through groove, and the limiting surface is used to limit the downward movement of the protrusion.

[0015] According to some embodiments of the present invention, the buffer member is configured as a spring, and the spring is arranged parallel to the insertion rod.

[0016] A suitcase according to the second technical solution of the present invention includes the caster assembly as described in any one of the above items.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. By arranging the connecting member at an angle and articulating the mounting frame and the caster respectively, and providing a buffer between the mounting frame and the second end of the connecting member, the vibrations exerted on the caster during the process of dragging the suitcase are transmitted to the connecting member. The slanted connecting member combined with the buffer effectively buffers the forces exerted in both the oblique and vertical directions. That is, the forces exerted on the caster assembly in both the oblique and lateral directions are buffered, thereby reducing the risk of the caster assembly breaking in the oblique or lateral directions and improving the comfort when dragging the suitcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall schematic diagram of the caster assembly of an embodiment of the present utility model;

[0020] Figure 2This is an overall schematic diagram of the caster assembly of an embodiment of the present utility model (with one side of the caster hidden);

[0021] Figure 3 yes Figure 1 a cutaway view of the caster assembly shown;

[0022] Figure 4 This is a schematic structural diagram of a mounting frame according to an embodiment of the present utility model;

[0023] Figure 5 It is a structural schematic diagram of a connecting piece according to an embodiment of the present utility model.

[0024] Figure Number:

[0025] Fixed seat 100;

[0026] The mounting frame 200, the third sleeve portion 210, the housing 220, the limiting column 221, the annular groove 230, and the limiting surface 231;

[0027] Caster 300;

[0028] Insert rod 400;

[0029] Connecting member 500, first sleeve portion 510, second sleeve portion 520, protrusion 521, first rotating shaft 530, second rotating shaft 540, connecting plate 550;

[0030] Buffer 600. DETAILED DESCRIPTION

[0031] The following content will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings. It can be understood that the accompanying drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be understood as limiting the scope of protection of the present invention.

[0032] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0033] It should be noted that, unless otherwise clearly defined, when a feature is referred to as "fixed", "connected", "installed" or "set" on another feature, it can be directly "fixed", "connected", "installed" or "set" on the other feature, or it can be indirectly "fixed", "connected", "installed" or "set" on the other feature. The words "fixed", "connected", "installed" or "set" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in this utility model in combination with the specific content of the technical solution.

[0034] It should be noted that the descriptions of the directions or positional relationships indicated by up, down, left, right, top, bottom, front, back, inside, and outside used in the present invention are based on the directions or positional relationships in the drawings or embodiments, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0035] It should be noted that the term "and / or" used in the present invention includes any combination of one or more related listed items, "above", "below", "within", etc. are understood to include the number itself.

[0036] It should be noted that if the first and second are described in this utility model, they are only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] It should be noted that, unless otherwise expressly defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention.

[0038] Reference Figures 1 to 5 The technical solution of the first aspect of the present invention relates to a caster assembly, including a fixing base 100, a mounting frame 200 and a caster 300, a plug rod 400 is provided above the mounting frame 200, and the fixing base 100 is plugged into the plug rod 400, and is characterized in that it also includes: a connecting member 500, a first end of which is hinged to the lower end of the mounting frame 200 through a first rotating shaft 530, and a second end of which is hinged to the second rotating shaft 540 on the caster 300, the connecting member 500 is tilted and forms an obtuse angle with the plug rod 400; a buffer member 600, the two ends of which are respectively connected to the mounting frame 200 and the connecting member 50 0, and is located above the second end. During the dragging process, friction and collision occur between the caster 300 and the ground, and the vibration generated by the caster 300 is transmitted to the connecting member 500. Due to the inclined arrangement of the connecting member 500 and the setting of the buffer member 600, the upward force exerted on the connecting member 500 and the force along the inclination of the connecting member 500 itself are effectively buffered, so that the caster 300 can also be effectively buffered when facing uneven and complex road conditions, reducing the rigid contact between the caster 300 and the connecting member 500 and the mounting frame 200 in the non-vertical direction.

[0039] The application of the above-mentioned caster assembly has at least the following beneficial effects: by tilting the connecting member 500 and hingedly connecting the mounting frame 200 and the caster 300 respectively, and at the same time arranging a buffer member 600 between the mounting frame 200 and the second end of the connecting member 500, during the process of dragging the suitcase, the vibration exerted on the caster 300 is transmitted to the connecting member 500, and the tilted connecting member 500 combined with the buffer member 600 effectively buffers the forces in the tilting direction and the vertical direction, that is, the forces exerted on the caster assembly in the tilting direction and the lateral direction are buffered, thereby reducing the possibility of the caster assembly breaking in the tilting or lateral direction and improving the comfort when dragging the suitcase.

[0040] According to some embodiments of the present invention, the connecting member 500 is inclined from top to bottom from the first end toward the second end, that is, the position where the connecting member 500 is connected to the mounting frame 200 is higher than the position where the connecting member 500 is connected to the caster 300. At the same time, since the first end and the second end are both hinged, when the connecting member 500 is subjected to the gravity of the luggage box above, the first end can swing downward to a certain extent. During the dragging process, the first end can swing up and down within a certain range in the vertical direction. At the same time, the vertical direction is buffered by the buffer member 600. The first end is higher than the second end so that the force is transmitted upward and obliquely upward, which makes the buffering effect of the connecting member 500 better.

[0041] According to some embodiments of the present invention, the connecting member 500 includes a first sleeve portion 510, a second sleeve portion 520 and a connecting plate 550. The first sleeve portion 510 is connected to the second sleeve portion 520 through the connecting plate 550. The first sleeve portion 510 is arranged at the first end, the second sleeve portion 520 is arranged at the second end, and the buffer member 600 is arranged above the second sleeve portion 520. There are two first sleeve portions 510 and two connecting plates 550. The two first sleeve portions 510 are each connected to the second sleeve portion 520 through a connecting plate 550. The two first sleeve portions 510 are respectively arranged on both sides below the mounting frame 200 and are both hinged to the mounting frame 200 through the first rotating shaft 530. By arranging the first sleeve portions 510 on both sides below the mounting frame 200 and connecting to the mounting frame 200 through the first rotating shaft 530, the stability and strength of the connecting member 500 are increased.

[0042] According to some embodiments of the present invention, the mounting frame 200 includes a third sleeve portion 210 and a shell 220. The third sleeve portion 210 is vertically arranged, and the insertion rod 400 is inserted into the third sleeve portion 210. The lower end of the insertion rod 400 is provided with an annular groove, and the inside of the third sleeve portion 210 is provided with an annular protrusion for clamping the annular groove. The shell 220 is connected to the third sleeve portion 210 and is located above the second sleeve portion 520. The two ends of the buffer 600 are respectively connected to the second sleeve portion 520 and the shell 220. It can be understood that the shell 220 is covered on the top and sides of the second sleeve portion 520, which can play a certain protective role for the second sleeve portion 520.

[0043] According to some embodiments of the present invention, limiting columns 221 are provided on the second sleeve portion 520 and the shell 220. The two limiting columns 221 are used to limit the buffer component 600 between the second sleeve portion 520 and the shell 220. In this embodiment, the buffer component 600 is configured as a spring, and the hollow part of the spring is respectively inserted into the two limiting columns 221, so that the spring is limited between the second sleeve portion 520 and the shell 220 by the limiting columns 221 and will not fall off or tilt and fail.

[0044] According to some embodiments of the present invention, the second sleeve portion 520 is provided with a protrusion 521, and the shell body 220 is provided with an annular groove 230. When the second sleeve portion 520 rotates, the protrusion 521 can move in the annular groove 230. From the above, it can be seen that the first end of the connecting member 500 can rotate around the second end within a certain range. While the first end rotates, the second end rotates around the second rotating shaft 540, thereby driving the protrusion 521 to move in the annular groove 230. The annular groove 230 plays a role of giving way. At the same time, a limiting surface 231 is provided on the annular groove 230 to limit the protrusion 231 from rotating downward.

[0045] According to some embodiments of the present invention, the buffer member 600 is configured as a spring, which is arranged parallel to the insertion rod 400 to ensure that the spring can always buffer the force in the direction of the insertion rod 400, while the force in other directions is dispersed through the connecting member 500 and then buffered in combination with the spring.

[0046] A luggage case according to the second technical solution of the present invention includes any one of the caster assemblies described above.

[0047] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", "extended embodiment" may be used to describe several embodiments of the present utility model. The specific features, structures, materials or characteristics in several embodiments may be combined in accordance with the principles and purposes of the present utility model.

[0048] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above embodiments. As long as the technical effects of the present invention are achieved by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations to these embodiments within the spirit and principles of the present disclosure and without departing from the principles and purpose of the present invention should be included in the scope of protection of the present disclosure and should be deemed to fall within the scope of protection of the present invention.

Claims

1. A caster assembly, comprising a fixed seat (100), a mounting frame (200) and a caster (300), wherein an insertion rod (400) is provided above the mounting frame (200), and the fixed seat (100) is plugged into the insertion rod (400), characterized in that: Also includes: A connecting member (500), a first end of which is hinged to the lower end of the mounting frame (200) via a first rotating shaft (530), and a second end of which is hinged to a second rotating shaft (540) on the caster (300), wherein the connecting member (500) is tilted and forms an obtuse angle with the insertion rod (400); The buffer member (600) has two ends respectively connected to the mounting frame (200) and the connecting member (500), and is located above the second end.

2. The caster assembly according to claim 1, wherein: The connecting member (500) is inclined from top to bottom from the first end toward the second end.

3. The caster assembly according to claim 1, wherein: The connecting member (500) includes a first sleeve portion (510), a second sleeve portion (520) and a connecting plate (550), wherein the first sleeve portion (510) is connected to the second sleeve portion (520) via the connecting plate (550), the first sleeve portion (510) is arranged at the first end, the second sleeve portion (520) is arranged at the second end, and the buffer member (600) is arranged above the second sleeve portion (520).

4. The caster assembly according to claim 3, wherein two of the first sleeve portions (510) and two of the connecting plates (550) are provided, and the two first sleeve portions (510) are each connected to the second sleeve portion (520) via one of the connecting plates (550), and the two first sleeve portions (510) are respectively arranged on both sides below the mounting frame (200), and are both hinged to the mounting frame (200) via the first rotating shaft (530).

5. The caster assembly according to claim 3 or 4, characterized in that: The mounting frame (200) includes a third sleeve portion (210) and a shell (220), wherein the third sleeve portion (210) is vertically arranged, the insertion rod (400) is inserted into the third sleeve portion (210), the shell (220) is connected to the third sleeve portion (210) and is located above the second sleeve portion (520), and the two ends of the buffer member (600) are respectively connected to the second sleeve portion (520) and the shell (220).

6. The caster assembly according to claim 5, wherein: The second sleeve portion (520) and the housing (220) are both provided with limiting columns (221), and the two limiting columns (221) are used to limit the buffer member (600) between the second sleeve portion (520) and the housing (220).

7. The caster assembly according to claim 5, wherein: The second sleeve portion (520) is provided with a protrusion (521), and the housing (220) is provided with an annular through groove (230). When the second sleeve portion (520) rotates, the protrusion (521) can move in the annular through groove (230).

8. The caster assembly according to claim 7, wherein: A limiting surface (231) is provided on the annular through groove (230), and the limiting surface (231) is used to limit the downward movement of the protrusion (521).

9. The caster assembly according to claim 1, wherein: The buffer member (600) is configured as a spring, and the spring is arranged parallel to the insertion rod (400).

10. A suitcase, characterized in that: The invention comprises a caster assembly according to any one of claims 1 to 9.