A brake wheel with a telescopic locking structure

Abstract

This utility model discloses a brake wheel with a telescopic locking structure, including a wheel seat, a wheel frame rotatably connected to the wheel seat, a wheel rotatably connected to the wheel frame, a locking boss at one end of the wheel, a locking groove distributed around the locking boss, and a locking pin inserted into one of the locking grooves; a telescopic rod slidably connected to the wheel frame, a pressing part at one end of the telescopic rod, a locking block at the other end, a first elastic element between the locking block and the telescopic rod, a locking groove on the locking block, a locking island in the center of the locking groove, a first hook groove at one end of the locking island, a second hook groove at the other end of the locking island, a left slide rail and a right slide rail connecting the second hook groove and the first hook groove, and a locking hook connected to the telescopic rod by a connecting rod, a first slope at one end of the locking island, and a second slope on the locking groove. This brake wheel has the characteristics of novel structure and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and more specifically, it relates to a brake wheel with a telescopic locking structure. Background Technology

[0002] Brake wheels are widely used in equipment such as handcarts, warehouse shelves, and medical device trolleys. They temporarily fix the equipment by braking the wheels, preventing unexpected slippage and ensuring safety and operational stability. Currently, most mainstream brake wheels use a pedal-operated braking structure, where the user presses down on the brake pedal to engage the braking component and engage the wheel. However, unlocking requires applying an upward pulling force to release the brake. Since the upward pulling action of the foot is difficult to generate stable force, it is not only laborious to operate, especially for users with weaker strength (such as the elderly or women), but also reduces operational efficiency and increases labor intensity in scenarios involving frequent switching between braking and unlocking states (such as logistics handling and medical care). This fails to meet the demand for convenient use and results in an overall unsatisfactory performance. Therefore, this utility model proposes a brake wheel with a telescopic locking structure. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a brake wheel with a telescopic locking structure, which has the characteristics of novel structure and convenient operation.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to a brake wheel with a telescopic locking structure, including a wheel seat, a wheel frame rotatably connected to the wheel seat, a wheel rotatably connected to the wheel frame, a locking boss provided at the end of the wheel facing the wheel frame, a plurality of adjacent locking grooves with equal included angles and outward openings arranged around the locking boss, wherein a locking pin that can be pulled out and inserted in one of the locking grooves is movable radially, and the locking pin extends along the axial direction of the wheel;

[0005] The wheel frame is slidably connected to a telescopic rod that moves in the same direction as the locking post. One end of the telescopic rod has a pressing part located outside the wheel frame, and the other end has a locking block located inside the wheel frame. A first elastic element is provided between the locking block and the telescopic rod. The locking block has a locking groove, and a locking island is located in the center of the locking groove. The end of the locking island facing away from the telescopic rod has a first hook groove, and the end of the locking island facing the telescopic rod has a second hook groove on the groove wall of the locking groove. A left slide and a right slide are connected between the second hook groove and the first hook groove. The lock hook also includes a locking hook that slides in the left slide and the right slide. The locking hook is connected to the telescopic rod by a connecting rod. The end of the locking island facing the second hook groove has a first slope that guides the locking hook to the left slide. The groove wall of the locking groove has a second slope that guides the locking hook to the right slide. The second slope is located at the end of the locking island facing away from the telescopic rod. The locking post is located on the telescopic rod.

[0006] The present invention is further configured such that: the wheel frame includes a fixed frame and a movable frame, the movable frame is rotatably connected to the fixed frame, a second elastic element is provided between the fixed frame and the movable frame, and a blocking part is provided on the fixed frame to restrict the movable frame from rotating indefinitely.

[0007] The present invention is further configured such that: the second elastic element is a compression spring with one end abutting against the fixed frame and the other end abutting against the movable frame.

[0008] The present invention is further configured such that: the first elastic element is a compression spring with one end abutting against the telescopic rod and the other end abutting against the locking block.

[0009] The present invention is further configured such that the pressing part is located on the top of the wheel frame.

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. Borrowing from the telescopic locking mechanism of a ballpoint pen, both braking and unlocking are done by pressing down, without the need to pull up. It is easy to apply force with the foot, making it easy for all types of users to operate, and it is more efficient when frequently switching states.

[0012] 2. It has fewer mechanical components and a mature operating principle, allowing it to be directly integrated into existing brake wheels with low modification costs; it also has fewer mechanical transmission failures, strong stability, and can be adapted to different types of brake wheels, making it widely applicable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 This is a partial structural schematic diagram of the present invention;

[0016] Figure 4 yes Figure 3 A schematic diagram of a partial structure;

[0017] Figure 5 This is a schematic diagram illustrating the structure of the wheel in this utility model;

[0018] Figure 6 This is a schematic diagram illustrating the structure of the wheel frame in this utility model. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0020] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0021] Example 1

[0022] See Figures 1 to 5 As shown, the brake wheel with a telescopic locking structure involved in this embodiment includes a wheel seat 1, a wheel frame 2 rotatably connected to the wheel seat 1, a wheel 3 rotatably connected to the wheel frame 2, a locking boss 4 is provided at the end of the wheel 3 facing the wheel frame, and a plurality of locking grooves 5 with equal included angles and outward openings are arranged around the locking boss 4. A locking pin 6 that can be pulled out and inserted into one of the locking grooves 5 is moved radially, and the locking pin 6 extends along the axial direction of the wheel 3.

[0023] A telescopic rod 7, which moves in the same direction as the locking pin, is slidably connected to the wheel frame 2. One end of the telescopic rod 7 has a pressing part 8 located outside the wheel frame, and the other end has a locking block 9 located inside the wheel frame. A first elastic element 10 is provided between the locking block 9 and the telescopic rod 7. The first elastic element 10 is a compression spring with one end abutting against the telescopic rod and the other end abutting against the locking block. A locking groove 11 is provided on the locking block 9. A locking island 12 is provided in the center of the locking groove 11. The end of the locking island 12 facing away from the telescopic rod has a first hook groove 13. The end of the locking island 12 facing the telescopic rod has a first hook groove 13. The second hook groove 14 on the wall of the locking groove is connected to the first hook groove 13 by a left slide rail 15 and a right slide rail 16. It also includes a locking hook 17 that slides in the left slide rail and the right slide rail. The locking hook 17 is connected to the telescopic rod 7 by a connecting rod 18. The end of the locking island 12 facing the second hook groove has a first slope 19 that guides the locking hook to the left slide rail. The wall of the locking groove 11 has a second slope 20 that guides the locking hook to the right slide rail. The second slope 20 is located at the end of the locking island facing away from the telescopic rod. The locking post 6 is located on the telescopic rod 7.

[0024] Furthermore, the pressing part 8 is located on the top of the wheel frame 2.

[0025] In this implementation scheme, when a pressing operation is performed, a telescopic locking mechanism inspired by a ballpoint pen is triggered: upon the first press, the mechanism drives the locking pin to extend and engage with the groove (i.e., locking groove) on the side of the wheel, restricting the wheel's rotation through the engagement of the groove and the locking pin, thus achieving braking; upon the second press, the telescopic locking mechanism switches its state, causing the locking pin to retract from the groove, releasing the restriction on the wheel, completing the unlocking process, and allowing the wheel to resume free rotation.

[0026] Example 2

[0027] See Figures 1 to 5 As shown, the brake wheel with a telescopic locking structure involved in this embodiment is further configured based on embodiment 1, wherein the wheel frame 2 includes a fixed frame 201 and a movable frame 202, the movable frame 202 is rotatably connected to the fixed frame 201, a second elastic member 203 is provided between the fixed frame 201 and the movable frame 202, the second elastic member 203 is a compression spring with one end abutting against the fixed frame and the other end abutting against the movable frame, and a blocking part 204 is provided on the fixed frame 201 to restrict the movable frame from rotating indefinitely.

[0028] In this embodiment, by setting the wheel frame 2 to include a fixed frame 201 and a movable frame 202, and adding an elastic element between them to buffer and absorb shock, the brake wheel is given shock absorption and impact resistance.

[0029] The brake wheel with a telescopic locking structure involved in this utility model is inspired by the telescopic locking mechanism of a ballpoint pen. Both braking and unlocking are done by pressing down, without the need for pulling up, making it easy to apply force with the foot. It can be easily operated by various users and is more efficient when frequently switching states. Furthermore, the mechanism has fewer components, a mature principle, and can be directly integrated into existing brake wheels, resulting in low modification costs. It has fewer mechanical transmission failures, strong stability, and can be adapted to different types of brake wheels, making it widely applicable. Overall, it has complete functions and strong practicality.

[0030] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used 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, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0031] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model 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 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 based on the specific circumstances.

[0032] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A brake wheel with a telescopic locking structure, comprising a wheel seat, a wheel frame rotatably connected to the wheel seat, and a wheel rotatably connected to the wheel frame, characterized in that: The wheel has a locking boss at one end facing the wheel frame. The locking boss has several locking grooves with equal included angles and outward openings arranged around it. A locking pin that can be pulled out and inserted into one of the locking grooves is a locking pin that moves radially and extends along the axial direction of the wheel. The wheel frame is slidably connected to a telescopic rod that moves in the same direction as the locking post. One end of the telescopic rod has a pressing part located outside the wheel frame, and the other end has a locking block located inside the wheel frame. A first elastic element is provided between the locking block and the telescopic rod. The locking block has a locking groove, and a locking island is located in the center of the locking groove. The end of the locking island facing away from the telescopic rod has a first hook groove, and the end of the locking island facing the telescopic rod has a second hook groove on the groove wall of the locking groove. A left slide and a right slide are connected between the second hook groove and the first hook groove. The lock hook also includes a locking hook that slides in the left slide and the right slide. The locking hook is connected to the telescopic rod by a connecting rod. The end of the locking island facing the second hook groove has a first slope that guides the locking hook to the left slide. The groove wall of the locking groove has a second slope that guides the locking hook to the right slide. The second slope is located at the end of the locking island facing away from the telescopic rod. The locking post is located on the telescopic rod.

2. The brake wheel having the telescopic locking structure according to claim 1, characterized in that: The wheel frame includes a fixed frame and a movable frame. The movable frame is rotatably connected to the fixed frame. A second elastic element is provided between the fixed frame and the movable frame. The fixed frame is provided with a blocking part to restrict the unlimited rotation of the movable frame.

3. The brake wheel having the telescopic locking structure according to claim 2, characterized in that: The second elastic element is a compression spring with one end abutting against the fixed frame and the other end abutting against the movable frame.

4. The brake wheel having the telescopic locking structure according to claim 1, wherein: The first elastic element is a compression spring with one end abutting against the telescopic rod and the other end abutting against the locking block.

5. The brake wheel having the telescopic locking structure according to claim 1, wherein: The pressing part is located on the top of the wheel frame.

Images