Trolley case trundle chassis

Abstract

The utility model discloses a trundle chassis of a draw-bar box, which comprises a trundle chassis body, a shaft hole is arranged on the trundle chassis body, a trundle shaft is inserted in the shaft hole in a drawable manner, an axial limiting groove is arranged on the side surface of the trundle shaft, and a main shaft parallel to the axis of the shaft hole is arranged on the trundle chassis body. The main shaft is rotationally connected with a lock arm extending in the radial direction, one end, not connected with the main shaft, of the lock arm is provided with a shifting block extending out of the side face of the trundle chassis body, the lock arm is provided with a lock groove which extends in the circumferential direction around the axis of the lock arm and allows a trundle shaft to slide in, and the inner wall of the lock groove is provided with an axial limiting plate clamped into the axial limiting groove. The trundle chassis has the advantages of being easy to detach and convenient to maintain, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage accessories, and more specifically, to a trolley case castor chassis. Background Art

[0002] Most swivel casters on the market that are rotatably connected to a caster chassis are riveted at one end, achieving a non-detachable connection to the chassis. This results in the wheel and its connected components requiring replacement of the entire caster assembly if damaged. Otherwise, repairs are impossible and disassembly is cumbersome, resulting in poor overall performance. Accordingly, the present utility model provides a suitcase caster chassis. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a trolley case caster chassis, which has the characteristics of being easy to detach and convenient to maintain.

[0004] In order to solve the above technical problems, the purpose of the present invention is achieved as follows: the present invention involves a trolley case caster chassis, including a caster chassis body, an axial hole is provided on the caster chassis body, a caster shaft is removably inserted in the axial hole, an axial limit groove is provided on the side of the caster shaft, the caster chassis body is provided with a main shaft that is parallel to the axis of the axial hole, a locking arm that extends radially is rotatably connected to the main shaft, and the end of the locking arm that is not connected to the main shaft has a shift block extending out of the side of the caster chassis body, the locking arm is provided with a locking groove that extends circumferentially around its axis and for the caster shaft to slide into, and the inner wall of the lock groove is provided with an axial limit plate that is stuck in the axial limit groove.

[0005] The utility model is further configured as follows: a process hole is provided on the locking arm, a spring piece is provided in the process hole with one end connected to the locking arm, a spherical protrusion is provided on the end of the spring piece facing the caster chassis body, and a first spherical groove and a second spherical groove are provided on the caster chassis body to match the spherical protrusion;

[0006] When the spherical protrusion is embedded in the first spherical groove, the axial limit plate is not locked in the axial limit groove; when the spherical protrusion is embedded in the second spherical groove, the axial limit plate is locked in the axial limit groove.

[0007] The utility model is further configured as follows: the process hole is arranged between the main shaft and the lock groove.

[0008] To sum up, the utility model has the following beneficial effects: the trolley case caster chassis involved in the utility model can realize the axial limit plate to cut in and out relative to the axial limit groove by circumferentially rotating the lock arm. When the axial limit plate is stuck in the axial limit groove, the caster shaft cannot be removed from the caster chassis body. When the axial limit plate is not stuck in the axial limit groove, the caster shaft can be removed from the caster chassis body. It is easy to remove and easy to maintain. The overall function is complete and the practicality is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 It is a structural diagram of another state of the utility model;

[0011] Figure 3 It is a structural schematic diagram of the utility model for reflecting the caster shaft. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. Based on the examples in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0013] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0014] Example 1

[0015] See also Figures 1 to 3 As shown, the present embodiment involves a suitcase caster chassis, comprising a caster chassis body 1, an axial hole 2 being provided on the caster chassis body 1, a caster shaft 3 being removably inserted into the axial hole 2, an axial limit groove 4 being provided on the side of the caster shaft 3, the caster chassis body 1 being provided with a main shaft 5 which is parallel to the axis of the axial hole, a locking arm 6 which is rotatably connected to the main shaft 5 and extends radially, the end of the locking arm 6 which is not connected to the main shaft having a shift block 7 extending out of the side of the caster chassis body, the locking arm 6 being provided with a locking groove 8 which extends circumferentially around its axis and for the caster shaft to slide into, an axial limit plate 81 which is inserted into the axial limit groove 4 is provided on the inner wall of the locking groove 8.

[0016] In this embodiment, by rotating the locking arm 6 until the axial limiting plate 81 is engaged in the axial limiting groove 4, the caster shaft 3 is axially limited and cannot be removed from the caster chassis body 1; by rotating the locking arm 6 until the axial limiting plate 81 slides out of the axial limiting groove 4, the caster shaft 3 is no longer axially limited and can be removed from the caster chassis body 1.

[0017] Example 2

[0018] See also Figures 1 to 3 As shown, the present embodiment involves a suitcase caster chassis, which is further configured on the basis of the embodiment 1, wherein the locking arm 6 is provided with a process hole 9, the process hole 9 is provided with a spring piece 10 whose one end is connected to the locking arm, the spring piece 10 is provided with a spherical protrusion 11 on the end facing the caster chassis body, and the caster chassis body 1 is provided with a first spherical groove 12 and a second spherical groove 13 matching the spherical protrusion 11;

[0019] When the spherical protrusion 11 is embedded in the first spherical groove 12 , the axial limit plate 81 is not locked in the axial limit groove 4 ; when the spherical protrusion 11 is embedded in the second spherical groove 13 , the axial limit plate 81 is locked in the axial limit groove 4 .

[0020] Furthermore, the process hole 9 is provided between the main shaft 5 and the locking groove 8 .

[0021] In this embodiment, the elastic spherical protrusion 11 cooperates with the first spherical groove 12 and the second spherical groove 13 to serve as a positioning function for the locking arm 6 after position conversion.

[0022] The trolley case caster chassis involved in the utility model can realize the axial limit plate to cut in and out relative to the axial limit groove by circumferentially rotating the locking arm. When the axial limit plate is stuck in the axial limit groove, the caster shaft cannot be removed from the caster chassis body. When the axial limit plate is not stuck in the axial limit groove, the caster shaft can be removed from the caster chassis body. It is easy to remove and maintain, with complete overall functions and strong practicality.

[0023] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship actually shown 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 orientation, be constructed and operate in a specific orientation. Therefore, the terms describing orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can combine the embodiments and understand the specific meanings of the above terms according to specific circumstances.

[0024] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A trolley case caster chassis, comprising a caster chassis body, a shaft hole formed on the caster chassis body, a caster shaft removably inserted into the shaft hole, and an axial limit groove formed on the side of the caster shaft, characterized in that: The caster chassis body is provided with a main shaft that is parallel to the axis of the shaft hole, and a locking arm extending radially is rotatably connected to the main shaft. The end of the locking arm that is not connected to the main shaft has a shift block extending from the side of the caster chassis body, and the locking arm is provided with a locking groove that extends circumferentially around its axis and for the caster shaft to slide into, and an axial limit plate that is inserted into the axial limit groove is provided on the inner wall of the lock groove.

2. The suitcase caster chassis according to claim 1, characterized in that: A process hole is provided on the locking arm, a spring piece is provided in the process hole at one end connected to the locking arm, a spherical protrusion is provided at one end of the spring piece facing the caster chassis body, and a first spherical groove and a second spherical groove matching the spherical protrusion are provided on the caster chassis body; When the spherical protrusion is embedded in the first spherical groove, the axial limit plate is not locked in the axial limit groove; when the spherical protrusion is embedded in the second spherical groove, the axial limit plate is locked in the axial limit groove.

3. The suitcase caster chassis according to claim 2, characterized in that: The process hole is arranged between the main shaft and the locking groove.

Images