Novel brake wheel

Abstract

The utility model discloses a novel brake wheel which comprises a movable seat, a beetle rebound self-locking device clamping head, a pressing piece, a beetle rebound self-locking device lock body, a treading head, a first spring, a second spring, a limiting piece and clamping teeth. According to the novel brake wheel, a treading head can be treaded to drive a pressing piece to press downwards, so that a slope part is extruded through a groove part to promote a movable seat to move forwards, the movable seat is promoted to loosen limitation on a limiting piece, and the limiting piece moves forwards to be clamped in clamping teeth under a third spring, so that the braking effect is achieved; in the process, the beetle rebounding self-locking device clamping head and the beetle rebounding self-locking device lock body are locked, the fixing effect is maintained, the treading head can be treaded again to drive the pressing piece to press downwards, so that the beetle rebounding self-locking device clamping head and the beetle rebounding self-locking device lock body are unlocked, a second spring drives the movable base to rebound, the limiting piece is returned, and the beetle rebounding self-locking device lock body is locked. And limitation can be released only by treading, so that the operation of lifting by hands is avoided, and the braking and the braking release of the roller are more convenient.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, specifically a novel brake wheel. Background Technology

[0002] Casters are a general term encompassing swivel casters, fixed casters, and swivel casters with brakes. Swivel casters, also known as universal wheels, allow 360-degree rotation; fixed casters, also called directional casters, lack a rotating mechanism and cannot turn. Typically, these two types are used together; for example, a handcart typically has two fixed casters at the front and two swivel casters near the push handle at the rear. Casters are made from various materials, such as PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, iron-core nylon casters, and iron-core PU casters.

[0003] The braking mechanism of a caster is usually located on the rear side of the caster. It is locked by pressing down on the foot pedal. To unlock, the foot pedal can be lifted up. When braking, you usually only need to press down on the foot pedal. When unlocking, although you can lift the pedal with your foot, in most cases you need to bend over and use your hands to accurately lift the pressure plate, which is not very convenient. Utility Model Content

[0004] The purpose of this invention is to provide a novel brake wheel to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel brake wheel includes a wheel seat with a rotating shaft movably extending through its bottom. Both ends of the rotating shaft are rotatably engaged with rollers adapted to it. A cavity is provided on the rear side of the wheel seat, and a cover is provided on the outer side of the cavity. The cavity includes a mounting cavity located on the rear side and a movable cavity located on the front side communicating with the mounting cavity. A movable seat is provided inside the movable cavity. A mounting part is provided at the bottom of the mounting cavity, and a connecting post is engaged within the mounting part. A beetle-shaped self-locking device latch is provided at the top of the connecting post. A pressing member is slidably provided on the upper inner side of the mounting cavity, and a beetle-shaped self-locking device lock body is fixedly embedded within the pressing member. The self-locking mechanism lock body is compatible with the Beetle self-locking mechanism locking head. The pressing part is equipped with a matching foot pedal. A first spring is provided between the foot pedal and the pressing part. A second spring is installed between the upper part of the movable seat and the inner wall of the cavity. The bottom of the movable seat is equipped with a mounting groove. A limiting member passes through the mounting groove. The tail end of the limiting member is fixedly connected to a protrusion in the mounting groove. The front two ends of the limiting member extend through the wheel seat and the cover. The roller is equipped with a locking tooth corresponding to the end of the limiting member. The pressing part is equipped with a bevel on the side near the movable seat. The movable seat is equipped with a ramp corresponding to the bevel.

[0007] As a further embodiment of this utility model: the wheel seat and the cover are provided with long slots for the limiting member to pass through and slide.

[0008] As a further improvement of this utility model: a third spring is provided in the mounting groove, and the third spring is located between the protrusion and the mounting part.

[0009] As a further improvement of this utility model: the cover is fixedly installed to the wheel seat by bolts, one of which corresponds to the bottom of the connecting column.

[0010] As a further embodiment of this utility model: the pressing member is symmetrically provided with sliders on both sides, and the inner wall of the mounting cavity and the inner wall of the cover are provided with grooves that correspond to and fit the sliders. The pedal head is provided with a guide post in the middle, the guide post is inserted into the mounting cavity and its two sides are embedded in the grooves, and the guide post is also symmetrically provided with elastic limit cards, which correspond to and fit the inner side of the top of the cavity.

[0011] As a further improvement of this utility model: the front side of the wheel seat is provided with a connecting part, a stop is connected to the connecting part, and a mounting post is rotatably engaged in the middle of the connecting part.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model utilizes the coordinated use of a wheel seat, rotating shaft, roller, mounting cavity, movable cavity, movable seat, mounting part, connecting column, beetle-shaped self-locking device locking head, pressing part, beetle-shaped self-locking device lock body, pedal head, first spring, second spring, limiting part, cover, protrusion, and locking teeth. Stepping on the pedal head causes the pressing part to press down, which in turn compresses the inclined section, causing the movable seat to move forward and release the limiting part. The lower limiting part moves forward under the third spring and engages with the locking teeth, thus creating a braking effect. During this process, the beetle-shaped self-locking device locking head and lock body are locked, maintaining a fixed effect. Stepping on the pedal again causes the pressing part to press down, releasing the beetle-shaped self-locking device locking head and lock body. The second spring causes the movable seat to rebound, retracting the limiting part and releasing the limitation. Only stepping on the pedal is required, avoiding manual lifting and making braking and releasing the roller more convenient.

[0014] 2. By setting up the third spring, the protrusion and the mounting groove, the movable seat 6 can be used to limit the corresponding limiting member 15, preventing the limiting member 15 from being inserted into the retaining tooth. At the same time, the third spring can provide elastic force to make the limiting member flexibly inserted into the retaining tooth, avoiding rigid contact and squeezing damage.

[0015] 3. This utility model allows for easy disassembly and installation of the pedal head through the cooperation between the pedal head, guide post, slide groove and elastic limiter, and the detachable cover facilitates the assembly of the brake wheel.

[0016] 4. This utility model, through the cooperation of the connecting part, the stop device, and the mounting column, can change the universal wheel into a fixed wheel through the stop device, so that one wheel can be used for multiple purposes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a new type of brake wheel.

[0018] Figure 2 This is a three-dimensional diagram of a new type of brake wheel.

[0019] Figure 3 This is a side sectional view of a novel brake wheel.

[0020] Figure 4 This is a partial cross-sectional view of a novel brake wheel.

[0021] In the diagram: 1. Wheel seat; 2. Axle; 3. Roller; 4. Mounting cavity; 5. Movable cavity; 6. Movable seat; 7. Mounting part; 8. Connecting post; 9. Beetle rebound self-locking device locking head; 10. Pressing part; 11. Beetle rebound self-locking device lock body; 12. Pedal head; 13. First spring; 14. Second spring; 15. Limiting part; 16. Cover; 17. Protrusion; 18. Locking tooth; 19. Third spring; 20. Bevel part; 21. Slope part; 22. Elastic limit lock; 23. Connecting part; 24. Stopper; 25. Mounting post. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4In this embodiment of the present invention, a novel brake wheel includes a wheel seat 1. A rotating shaft 2 is movably passed through the bottom of the wheel seat 1. Both ends of the rotating shaft 2 are rotatably engaged with rollers 3 adapted to it. A cavity is provided on the rear side of the wheel seat 1, and a cover 16 is provided on the outer side of the cavity. The cavity includes a mounting cavity 4 located on the rear side and a movable cavity 5 located on the front side and communicating with the mounting cavity 4. A movable seat 6 is provided in the movable cavity 5. A mounting part 7 is provided at the bottom of the mounting cavity 4. A connecting post 8 is engaged in the mounting part 7. A beetle-shaped self-locking device head 9 is provided at the top of the connecting post 8. A pressing member 10 is slidably provided on the upper inner side of the mounting cavity 4. A beetle-shaped self-locking device lock body 11 is fixedly embedded in the pressing member 10. The beetle-shaped self-locking device lock body 11 is adapted to the beetle-shaped self-locking device head 9. A pedal head 12 adapted to it is provided on the pressing member 10. A first spring 13 is provided between the pedal head 12 and the pressing member 10. A second spring 14 is installed between the upper part of the movable seat 6 and the inner wall of the cavity. The bottom of the movable seat 6 is provided with an installation groove. A limiting member 15 passes through the installation groove. A protrusion 17 is fixedly connected to the tail end of the limiting member 15 in the installation groove. The installation groove is provided with a vertically set slot corresponding to the protrusion 17 to facilitate the installation of the protrusion 17. The front two ends of the limiting member 15 extend through the wheel seat 1 and the cover 16. The roller 3 is provided with a locking tooth 18 corresponding to the end of the limiting member 15. The pressing member 10 is provided with a bevel 20 on the side near the movable seat 6. The movable seat 6 is provided with a ramp 21 that matches the bevel 20. Through the cooperation of the ramp 21 and the bevel 20, the movable seat 6 can be squeezed during the pressing of the pressing member 10, so that the movable seat 6 moves forward in the movable cavity 5.

[0024] The wheel seat 1 and the cover 16 are provided with long slots for the limiting member 15 to pass through and slide.

[0025] A third spring 19 is provided in the mounting groove. The third spring 19 is located between the protrusion 17 and the mounting part 7, thereby forming an elastic squeezing force for the limiting member 15, so that the limiting member 15 can be easily inserted into the locking tooth 18.

[0026] The cover 16 is fixedly installed to the wheel seat 1 by bolts, one of which corresponds to the bottom of the connecting column 8. The cover 16 has a countersunk hole for bolt installation, the wheel seat 1 has a threaded hole for bolt insertion and threaded connection, and the connecting column 8 also has a through hole for bolt to pass through. The cover 16 has a protrusion that is inserted into the mounting part 7 to limit the connecting column 8.

[0027] The pressing member 10 has symmetrical sliders on both sides. The inner wall of the mounting cavity 4 and the inner wall of the cover 16 are provided with grooves that correspond to and fit the sliders, thereby preventing the pressing member 10 from rotating axially. The pedal head 12 has a guide post in the middle. The guide post is inserted into the mounting cavity 4 and its two sides are embedded in the grooves, thereby preventing the pedal head 12 from rotating axially when pressing down. The guide post is also symmetrically provided with elastic limit cards 22. The elastic limit cards 22 correspond to and fit the inner side of the top of the cavity, thereby allowing the pedal head 12 to be installed from above the mounting cavity 4 and limiting it.

[0028] The front side of the wheel seat 1 is provided with a connecting part 23, and a stop 24 is connected to the connecting part 23. The middle part of the connecting part 23 is rotatably engaged with the mounting post 25. The top and bottom of the stop 24 are provided with tooth grooves. The bottom tooth groove is engaged with the connecting part 23, and the top tooth groove is engaged with the seat support leg, thereby forming a rotation limit, which can convert the omnidirectional wheel into a fixed wheel.

[0029] The working principle of this utility model is as follows:

[0030] During assembly, place the connecting post 8 into the mounting cavity 4 corresponding to the mounting part 7, insert the tail end of the limiting member 15 into the mounting groove, with the protrusion 17 corresponding to the groove opening, and rotate 90° after insertion. Then install the second spring 14 and the third spring 19. At this time, the limiting member 15 can be placed into the movable cavity 5, and then the top cover 16 is installed. At this time, the beetle rebound self-locking device lock body 11 is installed in the lower pressure member 10. The lower pressure member 10 is placed into the mounting cavity 4 from the top surface, so that the slider corresponds to the slide groove. Place the first spring 13, insert the guide post of the pedal head 12 into the mounting cavity 4 corresponding to the slide groove, with the guide post corresponding to the slide groove, until the elastic limiting card 22 is locked. Then, the rotating shaft 2 passes through the wheel seat 1, and the roller 3 is pressed on both ends of the rotating shaft 2 to form a rotating locking installation.

[0031] For the installation of the casters, the brake wheels are directly connected to the seat mounting position via the mounting post 25.

[0032] Oriented installation involves placing the stop 24 at the connecting part 23 and inserting the mounting post 25 into the mounting position of the seat. The stop 24 is inserted into the mounting position of the seat, thereby forming an axis limit and creating an oriented wheel effect.

[0033] When braking, stepping on the pedal head 12 presses down the lower pressure member 10, which in turn squeezes the ramp portion 21 through the bevel portion 20, causing the movable seat 6 to move forward. This releases the mounting groove from the limiting member 15, and under the action of the third spring 19, the limiting member 15 pops forward and locks into the locking teeth 18 to form a brake. At the same time, the Beetle rebound self-locking device lock body 11 locks with the Beetle rebound self-locking device locking head 9 to maintain the effect. At this time, the first spring 13 causes the pedal head 12 to spring up, and under the action of the second spring 14, the movable seat 6 partially resets, lifting the lower pressure member 10 to facilitate the next pedaling.

[0034] When the brake is released, step on the pedal head 12 again. The pressing part 10 is pushed down again, thereby releasing the Beetle rebound self-locking device lock body 11 from the Beetle rebound self-locking device latch head 9. At this time, the second spring 14 causes the movable seat 6 to return to its original position. The movable seat 6 drives the limiting part 15 to return to its original position, thus releasing the braking effect.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel brake wheel, comprising a wheel seat (1), characterized in that: A rotating shaft (2) is movably inserted through the bottom of the wheel seat (1). Both ends of the rotating shaft (2) are rotatably engaged with rollers (3) that are adapted to it. A cavity is provided on the rear side of the wheel seat (1). A cover (16) is provided on the outside of the cavity. The cavity includes a mounting cavity (4) located on the rear side and a movable cavity (5) located on the front side and communicating with the mounting cavity (4). A movable seat (6) is provided in the movable cavity (5). A mounting part (7) is provided at the bottom of the mounting cavity (4). A connecting post (8) is engaged in the mounting part (7). A beetle rebound self-locking device head (9) is provided at the top of the connecting post (8). A pressing part (10) is slidably provided on the upper inner side of the mounting cavity (4). A beetle rebound self-locking device lock body (11) is fixedly embedded in the pressing part (10). The beetle rebound self-locking device lock body (11) is engaged with the beetle rebound self-locking device. The device is adapted to the clamp head (9), and the pressing part (10) is provided with a pedal head (12) adapted to it. A first spring (13) is provided between the pedal head (12) and the pressing part (10). A second spring (14) is installed between the upper part of the movable seat (6) and the inner wall of the cavity. The bottom of the movable seat (6) is provided with an installation groove. A limiting part (15) passes through the installation groove. A protrusion (17) is fixedly connected to the tail end of the limiting part (15) in the installation groove. The front two ends of the limiting part (15) pass through the wheel seat (1) and the cover (16). The roller (3) is provided with a cleaving tooth (18) at the end of the limiting part (15). The pressing part (10) is provided with a bevel (20) on the side near the movable seat (6). The movable seat (6) is provided with a ramp (21) adapted to it at the bevel (20).

2. The novel brake wheel according to claim 1, characterized in that: The wheel seat (1) and the cover (16) are provided with long slots for the limiting member (15) to pass through and slide.

3. A novel brake wheel according to claim 1, characterized in that: A third spring (19) is provided in the mounting groove, and the third spring (19) is located between the protrusion (17) and the mounting part (7).

4. A novel brake wheel according to claim 1, characterized in that: The cover (16) is fixedly installed to the wheel seat (1) by bolts, one of which corresponds to the bottom of the connecting column (8).

5. A novel brake wheel according to claim 1, characterized in that: The pressing member (10) is symmetrically provided with sliders on both sides. The inner wall of the mounting cavity (4) and the inner wall of the cover (16) are provided with grooves that correspond to and fit the sliders. The pedal head (12) is provided with a guide post in the middle. The guide post is inserted into the mounting cavity (4) and its two sides are embedded in the grooves. The guide post is also symmetrically provided with elastic limit cards (22). The elastic limit cards (22) correspond to and fit the inner side of the top of the cavity.

6. A novel brake wheel according to claim 1, characterized in that: The front side of the wheel seat (1) is provided with a connecting part (23), a stop (24) is connected to the connecting part (23), and a mounting post (25) is rotatably engaged in the middle of the connecting part (23).

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