Double-wheel universal caster with good braking effect

Abstract

The utility model discloses a double -wheeled universal trundle with good brake effect, including wheel frame, the wheel axle is equipped in the wheel frame middle part, and the wheel hub is equipped in wheel frame both sides, and the wheel hub rotatable connection is in the wheel axle end, and the tire is equipped with the wheel hub outer periphery, and the top rotatable connection of wheel frame one side has universal pipe, and the wheel hub is equipped with gear ring towards wheel frame one side, and the lock brake board is equipped with the sleeve pipe in lock brake board other end, and the brake block is slidably fitted in wheel frame, and the brake block bottom both sides are equipped with the rack, and the rack is engaged with gear ring, the universal trundle of the utility model adopts the mode of rack and gear ring engagement and stops the wheel hub, and the brake effect is better, and the wheel surface of tire is not hurt, and moreover, through the transmission of spacing fork and spacing board, can step open brake board after the wheel hub is locked by lock board, and the brake block and lock brake board are reset quickly, and in addition, cooperate brake tooth board and brake tooth disc, and when the brake block moves up and stops the wheel hub, can synchronous lock universal pipe, realize tire and steering double brake function.

Description

Technical Field

[0001] This utility model relates to caster technology, specifically a dual-wheel omnidirectional caster with good braking effect. Background Technology

[0002] Casters are a general term that includes swivel casters, fixed casters, and swivel casters with brakes. Swivel casters, also known as universal wheels, have a structure that allows them to rotate 360 ​​degrees; fixed casters, also called directional casters, do not have a rotating structure and cannot rotate.

[0003] The brake pedal of existing swivel casters is generally located on the outer side of the wheel. The user presses the brake pedal, which is fixed to the wheel surface by friction, thus achieving the purpose of locking the brake. However, with this braking method, when the pushing force is greater than the friction, the caster will still move, resulting in poor braking effect. Moreover, the brake pedal is in direct contact with the wheel surface, which can cause the tire surface to be damaged after long-term use, causing the tire to vibrate when rotating, affecting the user's experience and further affecting the braking effect. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a dual-wheel swivel caster with good braking effect. It uses a rack and pinion meshing method to brake the tire, resulting in better braking effect without damaging the tire surface.

[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: a double-wheel omnidirectional caster with good braking effect, including a wheel frame, an axle in the middle of the wheel frame, wheel hubs on both sides of the wheel frame, the wheel hubs being rotatably connected to the ends of the axles, a tire being fitted around the outer circumference of the wheel hubs, an omnidirectional tube being rotatably connected to the top of one side of the wheel frame, a toothed ring on the side of the wheel hub facing the wheel frame, a locking brake plate on the side of the wheel frame opposite to the omnidirectional tube, one end of the locking brake plate extending out of the wheel frame, a sleeve on the other end of the locking brake plate, the sleeve being fitted onto the axle and having a protrusion on one side of its top, a brake block being slidably fitted inside the wheel frame, a rack on both sides of the bottom of the brake block, the rack engaging with the toothed ring, a locking block on the top of the brake block, the locking block abutting against the protrusion.

[0006] Preferably, an opening brake plate is provided above the locking brake plate. The top of the opening brake plate is rotatably connected to the wheel frame and is provided with a limiting plate. The limiting plate is inserted into the limiting fork, and the limiting fork is located on the side of the top of the sleeve opposite to the protrusion.

[0007] Preferably, the brake block has a first strip-shaped hole in the middle, and the wheel axle passes through the first strip-shaped hole.

[0008] Preferably, a second spring is provided on the top of the brake block, the second spring is located between the brake block and the top of the wheel frame, and the second spring is in a compressed state.

[0009] Preferably, the bottom end of the universal tube is provided with a brake disc, the brake disc is inserted into and engaged with a brake plate, the brake plate slides up and down in engagement with the brake block on the side facing the brake disc, and a first spring is provided between the bottom end of the brake plate and the brake block, the first spring being in a compressed state.

[0010] Preferably, the brake plate has a vertical plate at the top, and a second strip hole in the middle of the vertical plate. A pin passes through the second strip hole and is located on the side of the brake block facing the brake disc.

[0011] In summary, this utility model achieves the following technical effects: This utility model features a dual-wheel swivel caster with excellent braking performance. It uses a rack and pinion mechanism to brake the wheel hub, resulting in better braking performance without damaging the tire surface. Furthermore, through the transmission of the limiting fork and limiting plate, after the locking plate has locked the wheel hub, stepping on the brake plate releases the brake pads and quickly resets the brake pads and locking plate. In addition, in conjunction with the brake tooth plate and brake tooth disc, when the brake pads move upward to lock the wheel hub, the swivel tube can be locked simultaneously, achieving dual braking functions for both the tires and the steering. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the dual-wheel omnidirectional caster with good braking effect according to this utility model; Figure 2 This is a schematic diagram of the structure of the dual-wheel swivel caster with good braking effect according to this utility model; Figure 3 This is an exploded structural diagram of the tire and wheel frame of the dual-wheel omnidirectional caster with good braking effect according to this utility model. Figure 4 This is an exploded structural diagram of the wheel frame of the dual-wheel swivel caster with good braking effect according to this utility model; Figure 5 This is a schematic diagram of the internal structure of the wheel frame of the dual-wheel swivel caster with good braking effect according to this utility model; Figure 6 This is a schematic diagram of the structure of the dual-wheel swivel caster with good braking effect according to this utility model; Figure 7 This is an exploded structural diagram of the dual-wheel omnidirectional caster with good braking effect according to this utility model. Instruction manual diagram markings: 1. Wheel frame; 2. Wheel hub; 3. Tire; 4. Universal tube; 5. Lock brake plate; 6. Unlock brake plate; 7. Brake disc; 8. Brake plate; 9. Brake pad; 10. Gear ring; 11. Wheel axle; 12. First spring; 13. Second spring; 14. Limit fork; 15. Limit plate; 16. Protrusion; 17. Rack; 18. Locking block. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0018] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] Example 1: like Figure 1-7 As shown, a dual-wheel swivel caster with good braking effect includes a wheel frame 1, an axle 11 in the middle of the wheel frame 1, and wheel hubs 2 on both sides of the wheel frame 1. The wheel hubs 2 are rotatably connected to the ends of the axle 11. A tire 3 is fitted around the outer periphery of the wheel hub 2. A swivel tube 4 is rotatably connected to the top of one side of the wheel frame 1. A toothed ring 10 is provided on the side of the wheel hub 2 facing the wheel frame 1. A locking brake plate 5 is provided on the side of the wheel frame 1 opposite to the swivel tube 4. One end of the locking brake plate 5 extends out of the wheel frame 1, and the other end of the locking brake plate 5 is provided with a sleeve. The sleeve is fitted onto the axle 11 and has a protrusion 16 on one side of its top. A brake block 9 is slidably fitted inside the wheel frame 1. A rack 17 is provided on both sides of the bottom of the brake block 9. The rack 17 meshes with the toothed ring 10. A locking block 18 is provided on the top of the brake block 9, and the locking block 18 abuts against the protrusion 16.

[0020] The universal joint 4 is used to connect the plug rod to the bottom of the equipment. When braking, the user only needs to step on the locking brake plate 5. The locking brake plate 5 rotates around the wheel axle 11, causing the protrusion 16 to lift up, which in turn lifts the brake block 9. The rack 17 and the gear ring 10 mesh, locking the wheel frame 1 and the wheel hub 2. At this time, the brake block 9 drives the brake tooth plate 8 to lift up and lock with the brake disc 7, realizing the locking of the steering function and realizing double braking. At the same time, the limit fork 14 moves downward, causing the limit plate 15 to press down as the locking brake plate 5 rotates, which causes the release brake plate 6 to lift up. When unlocking, the operator only needs to step on the release brake plate 6 to reset the locking brake plate 5, realizing the quick separation of the rack 17 and the gear ring 10, the brake tooth plate 8 and the brake disc 7, realizing the unlocking of the double brake and restoring the caster's universal and movement functions.

[0021] The dual-wheel swivel caster of this embodiment has a good braking effect. It uses the meshing of rack 17 and gear ring 10 to brake the wheel hub 2, which has a better braking effect and does not damage the wheel surface of tire 3. Moreover, through the transmission of limit fork 14 and limit plate 15, after the locking plate brakes the wheel hub 2, the brake plate 6 can be stepped on to quickly reset the brake block 9 and the locking brake plate 5. In addition, with the cooperation of brake tooth plate 8 and brake tooth disc 7, when the brake block 9 moves up to brake the wheel hub 2, the swivel tube 4 can be locked at the same time, realizing the dual braking function of tire 3 and steering.

[0022] A brake release plate 6 is provided above the locking brake plate 5. The top of the brake release plate 6 is rotatably connected to the wheel frame 1 and is provided with a limiting plate 15. The limiting plate 15 is inserted into the limiting fork 14. The limiting fork 14 is located on the side of the top of the sleeve opposite to the protrusion 16. The bottom of the limiting fork 14 contacts the bottom of the limiting plate 15, and the fork portions at both ends of the limiting fork 14 contact both sides of the limiting plate 15. This allows the limiting plate 15 to move smoothly when the limiting fork 14 rotates, preventing the limiting fork 14 and the limiting plate 15 from swinging up and down, thus ensuring the reliability of the linkage during movement. With the setting of the brake release plate 6, when braking, the limiting fork 14, along with the rotation of the locking brake plate 5, causes the limiting plate 15 to press down, causing the brake release plate 6 to lift up. The operator only needs to step on the brake release plate 6 to reset the locking brake plate 5, achieving quick unlocking.

[0023] The brake block 9 has a first strip hole in the middle, and the wheel axle 11 passes through the first strip hole. The setting of the first strip hole can limit the distance of the brake block 9 sliding up and down, and prevent the brake block 9 from rubbing against the ground too much or hitting the wheel frame 1 too much and deforming.

[0024] The brake block 9 is provided with a second spring 13 at its top. The second spring 13 is located between the brake block 9 and the top of the wheel frame 1. The second spring 13 is in a compressed state. The setting of the second spring 13 can make the brake block 9 move downward quickly, realize the reset of the lock brake plate 5, and improve the unlocking speed.

[0025] The universal tube 4 is provided with a brake disc 7 at its bottom end. The brake disc 7 is inserted and engaged with the brake plate 8. The brake plate 8 slides up and down on the brake block 9 on the side facing the brake disc 7. A first spring 12 is provided between the bottom end of the brake plate 8 and the brake block 9. The first spring 12 is in a compressed state. When the brake plate 8 and the brake disc 7 and the brake block 9 move up to brake the wheel hub 2, the universal tube 4 can be locked simultaneously to realize the dual braking function of the tire 3 and the steering.

[0026] The brake plate 8 has a vertical plate at the top, and a second strip hole in the middle of the vertical plate. A pin passes through the second strip hole and is located on the side of the brake block 9 facing the brake disc 7. The second strip hole and the pin limit the distance of the brake plate 8 sliding up and down. Together with the elastic force of the first spring 12, they prevent the brake plate 8 from separating from the brake disc 7 quickly.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A dual-wheel swivel caster with good braking effect, characterized in that, The device includes a wheel frame, an axle in the middle of the wheel frame, and wheel hubs on both sides of the wheel frame. The wheel hubs are rotatably connected to the ends of the axles, and a tire is fitted around the outer circumference of the wheel hubs. A universal joint is rotatably connected to the top of one side of the wheel frame. A toothed ring is provided on the side of the wheel hub facing the wheel frame. A locking brake plate is provided on the side of the wheel frame opposite to the universal joint. One end of the locking brake plate extends out of the wheel frame, and the other end of the locking brake plate has a sleeve. The sleeve is fitted onto the axle and has a protrusion on one side of its top. A brake block is slidably fitted inside the wheel frame. A rack is provided on both sides of the bottom of the brake block. The rack engages with the toothed ring. A locking block is provided on the top of the brake block, and the locking block abuts against the protrusion.

2. The dual-wheel swivel caster with good braking effect according to claim 1, characterized in that, A brake release plate is provided above the brake lock plate. The top of the brake release plate is rotatably connected to the wheel frame and is provided with a limiting plate. The limiting plate is inserted into the limiting fork. The limiting fork is located on the side of the top of the sleeve opposite to the protrusion.

3. A dual-wheel swivel caster with good braking effect according to claim 1, characterized in that, The brake block has a first strip-shaped hole in the middle, and the wheel axle passes through the first strip-shaped hole.

4. A dual-wheel swivel caster with good braking effect according to claim 1, characterized in that, The brake block is provided with a second spring at its top, which is located between the brake block and the top of the wheel frame, and the second spring is in a compressed state.

5. A dual-wheel swivel caster with good braking effect according to claim 1, characterized in that, The bottom end of the universal tube is provided with a brake disc, which is inserted into and engaged with a brake plate. The brake plate slides up and down on the side of the brake block facing the brake disc. A first spring is provided between the bottom end of the brake plate and the brake block, and the first spring is in a compressed state.

6. A dual-wheel swivel caster with good braking effect according to claim 5, characterized in that, The brake plate has a vertical plate at the top, and a second strip hole in the middle of the vertical plate. A pin passes through the second strip hole and is located on the side of the brake block facing the brake disc.

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