A self-weight separating brake wheel

Abstract

This utility model discloses a self-weight separating brake wheel, including a housing, a rotating shaft inside the housing, a roller fixedly mounted at the end of the shaft extending out of the housing, a cylindrical movable cavity integrally formed at the upper end of the housing, a pressure rod movably inserted into the movable cavity, a mounting base fixedly mounted at the upper end of the pressure rod, a limiting mechanism matching the movable cavity and the pressure rod, a latch movably mounted inside the housing and directly below the pressure rod, the upper end of the latch contacting the pressure rod and the lower end contacting the bottom surface of the housing via a spring, a gear fixedly mounted on the rotating shaft, a limiting protrusion at the bottom of the latch extending above the gear and engaging with the gear's tooth groove. This utility model achieves braking function through the cooperation of the pressure rod, latch, spring and gear, without the need for additional operating parts, simplifying the overall structure, and utilizing its own weight and usage state to achieve automatic locking and releasing of the roller, eliminating the operation steps of traditional physical switches.

Description

Technical Field

[0001] This utility model relates to the technical field of moving wheel devices, specifically to a weight-separated brake wheel. Background Technology

[0002] In daily life, portable carrying tools such as rolling suitcases and shopping baskets are widely used in travel and shopping scenarios due to their labor-saving and easy-to-move features. These tools are usually equipped with wheels at the bottom for easy dragging, and the braking and releasing functions of the wheels directly affect the ease of use.

[0003] Currently, most rolling suitcases and shopping baskets on the market rely on physical switches (such as foot switches or manual levers) to control the stopping wheels. When a tool needs to be held stationary, the user must manually operate the physical switch to lock the wheels; to move it, the switch must be operated again to unlock. This method of control via physical switches not only increases the user's steps, but also makes it easy to forget to operate the switch when holding items or using the product hastily, leading to accidental slippage. Furthermore, the inconvenience of operating the switch can affect efficiency, resulting in cumbersome use and a lack of flexibility.

[0004] Furthermore, for lever-type tools, their usage often involves switching between "standing upright and stationary" and "tilting and dragging". Existing braking mechanisms cannot automatically brake and release the rollers according to the tool's usage status, making it difficult to meet users' needs for convenience. Summary of the Invention

[0005] (a) Technical issues:

[0006] The present invention aims to provide a weight-separated brake wheel that can automatically lock and release the rollers according to the upright or tilted state of a trolley bag or trolley shopping basket, without the need for additional physical switch control.

[0007] (II) Technical Content:

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a weight-separated brake wheel, including a housing, a rotating shaft inside the housing, a roller fixedly provided at the end of the rotating shaft extending out of the housing, a cylindrical movable cavity integrally formed at the upper end of the housing, a pressure rod movably inserted into the movable cavity, a mounting base fixedly provided at the upper end of the pressure rod, a limiting mechanism matching between the movable cavity and the pressure rod, a latch movably provided inside the housing and directly below the pressure rod, the upper end of the latch contacting the pressure rod and the lower end contacting the bottom surface of the housing through a spring, a gear fixedly provided on the rotating shaft, and a limiting protrusion at the bottom of the latch extending above the gear, which engages with the tooth groove of the gear.

[0009] Furthermore, the latch is integrally formed from a cylindrical cavity with a bottom opening and a laterally extending arc-shaped plate. The spring is provided in the bottom cavity of the cylindrical cavity, and a limiting protrusion is fixedly provided on the bottom surface of the arc-shaped plate.

[0010] Furthermore, the limiting mechanism includes an annular limiting groove fixedly disposed near the lower end of the pressure rod, and a second limiting protrusion fixedly disposed on the inner wall of the movable cavity and matched and engaged with the limiting groove. The width of the limiting groove is greater than the width of the second limiting protrusion to form the range of motion of the pressure rod within the movable cavity.

[0011] Furthermore, both ends of the rotating shaft extend out of the housing, and the rollers are fixedly installed at both ends.

[0012] Furthermore, an end cap is detachably fixed to one side of the housing by screws, and the mounting base is fixed to the bottom four corners of the trolley bag or trolley shopping basket by bolts.

[0013] (III) Technical Effects:

[0014] Compared with existing technologies, this invention has the following advantages: It achieves braking function through the cooperation of a pressure rod, a latch, a spring, and gears, eliminating the need for additional operating parts and simplifying the overall structure. It utilizes its own weight and usage state (upright or tilted) to automatically lock and release the rollers, eliminating the need for traditional physical switches. This makes it particularly suitable for situations where both hands are holding items or in a hurry, improving ease of use. Specifically designed for scenarios such as trolley bags and trolley shopping baskets, it adapts to their "upright and stationary" and "tilted and dragged" usage characteristics, meeting users' needs for convenient tools. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of a self-weight separating brake wheel according to this utility model.

[0016] Figure 2 This is a schematic diagram of the braking state structure of a self-weight separating brake wheel according to this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of a weight-separated brake wheel in a disengaged state according to this utility model.

[0018] Figure 4 This is a schematic diagram of the overall structure of a self-weight separating brake wheel according to this utility model.

[0019] As shown in the figure: 1. Housing; 2. Rotating shaft; 3. Roller; 4. Movable cavity; 5. Pressure rod; 6. Mounting base; 7. Lock; 8. Spring; 9. Gear; 10. Limiting protrusion one; 11. Annular limiting groove; 12. Limiting protrusion two; 14. End cover; 71. Cylindrical cavity; 72. Arc-shaped retaining plate. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Combined with appendix Figure 1 To be continued Figure 4 A self-weight separating brake wheel includes a housing 1, a rotating shaft 2 rotatably mounted inside the housing 1, a roller 3 fixedly mounted at the end of the rotating shaft 2 extending out of the housing 1, a cylindrical movable cavity 4 integrally formed at the upper end of the housing 1, a pressure rod 5 movably inserted into the movable cavity 4, a mounting base 6 fixedly mounted at the upper end of the pressure rod 5, a limiting mechanism matching the movable cavity 4 and the pressure rod 5, a latch 7 movably mounted inside the housing 1 and directly below the pressure rod 5, the upper end of the latch 7 contacting the pressure rod 5 and the lower end contacting the bottom surface of the housing 1 via a spring 8, a gear 9 fixedly mounted on the rotating shaft 2, and a limiting protrusion 10 at the bottom of the latch 7 extending above the gear 9, which engages with the tooth groove of the gear 9.

[0024] In this embodiment, as a preferred technical solution, the latch 7 is integrally formed by a cylindrical cavity 71 with a bottom opening and a laterally extending arc-shaped plate 72. The spring 8 is provided in the bottom cavity of the cylindrical cavity 71, and the limiting protrusion 10 is fixedly provided on the bottom surface of the arc-shaped plate 72.

[0025] In this embodiment, as a preferred technical solution, the limiting mechanism includes an annular limiting groove 11 fixedly disposed near the lower end of the pressure rod 5, and a limiting protrusion 12 fixedly disposed on the inner wall of the movable cavity 4 and matched and engaged with the limiting groove 11. The width of the limiting groove 11 is greater than the width of the limiting protrusion 12 to form the range of motion of the pressure rod 5 in the movable cavity 4.

[0026] In this embodiment, as a preferred technical solution, the left and right ends of the rotating shaft 2 extend out of the housing 1 and the rollers 3 are fixedly provided at both ends. The end cap 14 is detachably fixed on one side of the housing 1 by screws, and the mounting base 6 is fixed to the bottom four corners of the trolley bag or trolley shopping basket by bolts.

[0027] The working principle of this weight-separated brake wheel is based on the change in the upright and tilted state of a trolley bag or shopping basket. The automatic locking and releasing of the wheel is achieved through the linkage between components. The specific process is as follows:

[0028] When the trolley bag or shopping basket is in an upright, stationary position, its own weight acts on the mounting base 6, causing the pressure rod 5 to move downward along the movable cavity 4, and the limiting protrusion 12 to slide within the limiting groove 11. The downward-moving pressure rod 5 exerts downward pressure on the latch 7, causing the latch 7 to compress the spring 8 and move downward simultaneously. At this time, the limiting protrusion 10 at the bottom of the arc-shaped locking plate 72 of the latch 7 engages with the gear 9 groove on the rotating shaft 2, thereby locking the roller 3 and preventing the tool from accidentally sliding.

[0029] When a trolley bag or shopping basket is tilted and dragged, the change in its overall angle will generate an upward pulling force on the pressure rod 5, causing the pressure rod 5 to move upward along the movable cavity 4 (within the limit groove 11). After the pressure rod 5 moves upward, the pressure on the latch 7 disappears, the spring 8 resets under its own elasticity, pushing the latch 7 upward, causing the limit protrusion 10 at the bottom of the arc-shaped plate 72 to disengage from the gear 9, and the roller 3 returns to a free rotation state, ensuring that the tool can be dragged smoothly.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A self-weight separating brake wheel, comprising a housing (1), a rotating shaft (2) rotatably disposed inside the housing (1), and a roller (3) fixedly disposed at the end of the rotating shaft (2) extending out of the housing (1), characterized in that: The upper end of the housing (1) is integrally formed with a cylindrical movable cavity (4). A pressure rod (5) is movably inserted into the movable cavity (4). A mounting base (6) is fixedly provided at the upper end of the pressure rod (5). A limiting mechanism is matched between the movable cavity (4) and the pressure rod (5). A latch (7) is movably provided inside the housing (1) and directly below the pressure rod (5). The upper end of the latch (7) contacts the pressure rod (5) and the lower end contacts the bottom surface inside the housing (1) through a spring (8). A gear (9) is fixedly provided on the rotating shaft (2). The bottom of the latch (7) extending above the gear (9) is provided with a limiting protrusion (10) that engages with the tooth groove of the gear (9).

2. A self-separating brake wheel according to claim 1, wherein: The latch (7) is integrally formed by a cylindrical cavity (71) with a bottom opening and an arc-shaped plate (72) extending laterally. The spring (8) is provided in the bottom cavity of the cylindrical cavity (71), and the limiting protrusion (10) is fixedly provided on the bottom surface of the arc-shaped plate (72).

3. A self-separating brake wheel according to claim 1, wherein: The limiting mechanism includes an annular limiting groove (11) fixedly disposed near the lower end of the pressure rod (5), and a limiting protrusion (12) fixedly disposed on the inner wall of the movable cavity (4) and matched and engaged with the limiting groove (11). The width of the limiting groove (11) is greater than the width of the limiting protrusion (12) to form the range of motion of the pressure rod (5) in the movable cavity (4).

4. A self-separating brake wheel according to claim 1, wherein: The rotating shaft (2) extends out of the housing (1) at both the left and right ends, and the rollers (3) are fixed at both ends.

5. A self-separating brake wheel according to claim 1, wherein: The end cap (14) is detachably fixed on one side of the housing (1) by screws, and the mounting base (6) is fixed at the bottom four corners of the trolley bag or trolley shopping basket by bolts.

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