Simple traction brake wheel

Abstract

The utility model belongs to the technical field of brake wheels, and particularly discloses a simple traction brake wheel which comprises a fixed wheel seat, two wheels and a pull rope, the bottom of the fixed wheel seat is rotationally connected with a wheel support, the two wheels are rotationally arranged on the two sides of the wheel support, two brake parts are arranged in the wheel support, and the pull rope is arranged on the two brake parts. A driving block used for driving the two braking parts to slide is connected between the two braking parts in a sliding mode, the top of the driving block is in threaded connection with a threaded connector, one end of a pull rope is connected with the threaded connector in a clamped mode, and the other end of the pull rope penetrates through the fixed wheel base and extends out of the fixed wheel base. The pull rope is directly connected with the driving block through the threaded connector, one end of the threaded connector is connected with the pull rope in a clamped mode, the other end of the threaded connector is connected with the driving block in a threaded mode, the connecting structure between the pull rope and the driving block is simplified, the driving block is simply pulled, the whole brake wheel is simple in structure, manufacturing and assembling cost can be reduced, and the service life of the brake wheel is prolonged. And the reliability of the wheel is improved, and the service life of the wheel is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of brake wheel technology, and in particular relates to a simple traction brake wheel. Background Technology

[0002] A brake wheel is a special type of wheel that incorporates a braking mechanism into a regular wheel. Its main function is to prevent objects from slipping or rolling when they do not need to move, thus maintaining their stability. Brake wheels are typically installed on equipment requiring braking, such as suitcases.

[0003] Existing brake wheels mainly utilize a pull rope to control the movement of the brake components, which in turn controls the movement of two brake levers to prevent the wheel from rotating or sliding, thus achieving braking. To drive these two brake levers, the structure is often quite complex, especially the connection between the brake components and the pull rope. For example, a Chinese invention patent discloses a pull rope brake wheel and a suitcase (application number: 202311736023.4). In this design, the lower end of the pull rope has two connecting parts (i.e., an upper connecting part and a lower connecting part) connected to the brake components. These two connecting parts are further connected by a tension spring to ensure that the pull rope can smoothly drive the drive block to slide when pulled. Simultaneously, the two connecting parts and the tension spring are installed inside a connecting cylinder, and a side cover is placed on the connecting cylinder to achieve a stable connection between the pull rope and the brake components. This complex connection structure increases manufacturing and assembly costs and is prone to malfunctions during long-term use, reducing the reliability and lifespan of the device.

[0004] Therefore, the inventors dedicated themselves to designing a brake wheel to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a simple traction brake wheel with a simple structure, which can not only reduce manufacturing and assembly costs, but also prevent failures during long-term use, thereby improving the reliability and service life of the wheel.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A simple traction brake wheel includes a fixed wheel seat, two wheels, and a pull rope. The bottom of the fixed wheel seat is rotatably connected to a wheel support. The two wheels are rotatably disposed on both sides of the wheel support. The wheel support has two braking components for preventing the two wheels from rotating. A driving block for driving the two braking components to slide is slidably connected between the two braking components. The top of the driving block is threaded with a threaded connector. One end of the pull rope is engaged with the threaded connector, and the other end of the pull rope passes through the fixed wheel seat and extends outside the fixed wheel seat.

[0008] As an improvement of the simple traction brake wheel of this utility model, the bottom of the threaded joint is provided with a threaded connection part, the top of the drive block is provided with a plug hole, and the threaded connection part is located in the plug hole and is threadedly connected to the plug hole.

[0009] As an improvement of the simple traction brake wheel of this utility model, the top of the threaded joint is provided with a cross-shaped groove, the opening of the groove is exposed on the side wall of the threaded joint, the side wall of the threaded joint is provided with a mounting hole, the mounting hole communicates with the groove, the pull rope is snapped into the groove and the fixing block at its bottom is located in the mounting hole.

[0010] As an improvement of the simple traction brake wheel of this utility model, the pull rope is provided with a protective tube, the end of the protective tube is provided with a pressure sleeve, the pressure sleeve and the protective tube are together provided with a fixing seat, and the fixing seat is installed on the fixing wheel seat.

[0011] As an improvement of the simple traction brake wheel of this utility model, the fixed wheel seat includes an outer wheel seat and an inner wheel seat. The inner wheel seat is located inside the outer wheel seat and forms a gap with the outer wheel seat for clamping the housing. The lower end of the fixed seat is fixed to the inner wheel seat, and the upper end of the fixed seat passes through the outer wheel seat.

[0012] As an improvement of the simple traction brake wheel of this utility model, a retaining ring is clamped between the pressure sleeve and the step inside the fixed seat. The retaining ring is sleeved on the outside of the protective tube. Multiple claws extend obliquely from the inner edge of the retaining ring towards the center of the retaining ring, and all the claws together clamp the protective tube.

[0013] As an improvement of the simple traction brake wheel of this utility model, the fixed wheel seat is connected to the wheel support through a hollow shaft. The upper end of the hollow shaft is engaged in the fixed wheel seat through a washer and a retaining ring, and the lower end of the hollow shaft is hung in the wheel support. The threaded joint is located in the hollow shaft.

[0014] As an improvement to the simple traction brake wheel of this utility model, the two brake components are slidably disposed in the wheel support in opposite directions and are elastically connected to the wheel support.

[0015] As an improvement of the simple traction brake wheel of this utility model, each of the braking components includes a slider, a connecting rod and a brake rod. The slider is slidably disposed in the wheel support and elastically connected to the wheel support. The brake rod is connected to the slider through the connecting rod to form a U-shape. The side of the wheel support is provided with a side hole for the brake rod to extend out of the wheel support.

[0016] As an improvement of the simple traction brake wheel of this utility model, the bottom end of the drive block is provided with a sliding joint, and two opposite sides of the sliding joint are respectively provided with sliding surfaces at an inclination. The two sliding surfaces are staggered. Each slider is provided with an inclined surface on the side close to the drive block. The two inclined surfaces are respectively in one-to-one sliding cooperation with the two sliding surfaces.

[0017] Compared with the prior art, the simplified traction brake wheel of this utility model uses a threaded joint to directly connect the pull rope and the drive block. One end of the threaded joint is snapped into the pull rope, and the other end of the threaded joint is threaded into the drive block. This simplifies the connection structure between the pull rope and the drive block. The simplified traction drive block and the simple structure of the entire brake wheel not only reduce manufacturing and assembly costs, but also make it less prone to failure during long-term use, thus improving the reliability and service life of the wheel. Attached Figure Description

[0018] Figure 1 This is a three-dimensional enlarged view of the simple traction brake wheel of this utility model;

[0019] Figure 2 This is a three-dimensional exploded view of the simple traction brake wheel of this utility model;

[0020] Figure 3 This is a three-dimensional enlarged view of the drive block, threaded joint, pressure sleeve, and pull rope of this utility model;

[0021] Figure 4 This is a three-dimensional enlarged view of the card ring of this utility model;

[0022] Figure 5 This is an enlarged cross-sectional view of the simplified traction brake wheel of this utility model;

[0023] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 This is a three-dimensional enlarged view of the wheel support and thrust bearing of this utility model;

[0025] Figure 8 This is a three-dimensional enlarged view of the wheel frame, threaded joint, drive block, and two sliders of this utility model;

[0026] Figure 9 This is a three-dimensional enlarged view of the drive block and two braking components of this utility model;

[0027] Figure 10 This is a three-dimensional exploded and enlarged view of the drive block and two braking components of this utility model;

[0028] Figure 11 This is another exploded and enlarged perspective view of the drive block and two braking components of this utility model;

[0029] Figure 12 This is a perspective view of the simplified traction brake wheel and lever, and brake control box of this utility model.

[0030] Illustration:

[0031] 1. Outer wheel seat; 11. Fixed wheel seat; 12. Wheel support; 2. Inner wheel seat; 21. Washer; 22. Snap ring; 3. Bracket seat; 31. Thrust bearing; 4. Wheel frame; 41. Side hole; 5. Drive block; 51. Sliding surface; 52. Sliding joint; 53. Insertion hole; 6. Brake component; 61. Slider; 611. Inclined surface; 62. Brake lever; 63. Connecting rod; 7. Fixed seat; 71. Hollow shaft; 72. Pressure sleeve; 73. Snap ring; 731. Snap claw; 74. Protective tube; 75. Wheel; 751. Brake groove; 8. Pull rope; 81. Threaded joint; 811. Mounting hole; 812. Tool groove; 813. Threaded connection; 9. Pull rod; 91. Brake control box. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0033] Reference Figures 1 to 11 A simple traction brake wheel includes a fixed wheel seat 11, two wheels 75, a pull rope 8, and a wheel support 12. The wheel support 12 is rotatably mounted on the bottom of the fixed wheel seat 11, and the two wheels 75 are rotatably mounted on both sides of the wheel support 12. The wheel support 12 is provided with two brake components 6 for preventing the two wheels 75 from rotating. A drive block 5 for driving the two brake components 6 to slide is slidably connected between the two brake components 6. A threaded connector 81 is threadedly connected to the top of the drive block 5. One end of the pull rope 8 is engaged with the threaded connector 81, and the other end of the pull rope 8 passes through the fixed wheel seat 11 and extends outside the fixed wheel seat 11.

[0034] Reference Figure 1 , Figure 2 and Figure 5 The fixed wheel seat 11 includes an outer wheel seat 1 and an inner wheel seat 2. The outer wheel seat 1 is fan-shaped and its outer edge is bent downward. The inner wheel seat 2 is similar in shape to the outer wheel seat 1. The inner wheel seat 2 is located inside the outer wheel seat 1 and forms a gap between it and the outer wheel seat 1 for clamping the box shell (i.e., the box shell is clamped between the outer wheel seat 1 and the inner wheel seat 2). The inner wheel seat 2 is located between the outer wheel seat 1 and the wheel support 12.

[0035] Reference Figure 1 , Figure 5 , Figure 7 and Figure 8The wheel support 12 is located directly below the fixed wheel support 11. The wheel support 12 includes a support base 3 and a wheel frame 4. The support base 3 is cylindrical. The top of the support base 3 is horizontally rotatably connected to the inner wheel support 2 through a thrust bearing 31. The wheel frame 4 is located at the bottom of the support base 3 and is locked to the bottom of the support base 3 with screws. The wheel frame 4 is located at the bottom of the support base 3 and is engaged with the bottom of the support base 3. The wheel frame 4 is T-shaped and its upper end is cylindrical. A rotating shaft is passed through the lower end of the wheel frame 4. Two wheels 75 are both sleeved on the rotating shaft. Each wheel 75 has multiple brake grooves 751 on its inner side. The multiple brake grooves 751 on the same wheel 75 are arranged in a circle around the rotating shaft. The left and right sides of the wheel frame 4 are also provided with side holes 41 at an angle. The top surface of the wheel frame 4 is provided with a slot, which communicates with the two side holes 41.

[0036] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The pull rope 8 is covered with a protective tube 74, the lower end of the pull rope 8 is exposed in the protective tube 74, and a pressure sleeve 72 is fitted at the end of the protective tube 74. A fixing seat 7 is fitted together on the pressure sleeve 72 and the protective tube 74. The fixing seat 7 is installed on the fixing wheel seat 11. Specifically, the diameter of the lower end of the fixing seat 7 is larger than the diameter of its upper end. The lower end of the fixing seat 7 is fixed in the fixing groove of the inner wheel seat 2. The upper end of the fixing seat 7 passes through the outer wheel seat 1 and extends to the outside of the outer wheel seat 1. The fixing seat 7, the pressure sleeve 72, the protective tube 74 and the pull rope 8 are all coaxially arranged. The pressure sleeve 72 is installed in the fixing seat 7. In order to prevent the protective tube 74 from detaching from the fixing wheel seat 11, an annular retaining ring 73 is clamped between the pressure sleeve 72 and the step inside the fixing seat 7. The retaining ring 73 is fitted on the outside of the protective tube 74. Multiple claws 731 extend obliquely from the inner edge of the retaining ring 73 towards the center of the retaining ring 73. All the claws 731 clamp the protective tube 74 together.

[0037] Reference Figure 2 , Figure 3 and Figure 5 The inner wheel seat 2 is connected to the support seat 3 via a hollow shaft 71. The hollow shaft 71 passes through the support seat 3 and the inner wheel seat 2. The hollow shaft 71 is coaxially arranged with the fixed seat 7. The upper end of the hollow shaft 71 extends into the fixed seat 7 and is engaged with a retaining ring 22. A gasket 21 is provided in the fixing groove of the inner wheel seat 2. The retaining ring 22 is stacked on the gasket 21 so that the upper end of the hollow shaft 71 is engaged with the inner wheel seat 2 through the gasket 21 and the retaining ring 22. The retaining ring 22 and the gasket 21 are both located inside the lower end of the fixed seat 7. A boss is provided at the lower end of the hollow shaft 71. The boss cooperates with the bottom of the support seat 3 so that the lower end of the hollow shaft 71 is hooked onto the support seat 3.

[0038] Reference Figure 2 , Figure 3 and Figure 5 The threaded connector 81 is located inside the hollow shaft 71. The bottom of the threaded connector 81 is provided with a threaded connection part 813, and the top of the threaded connector 81 is provided with a cross-shaped groove 812. The opening of the groove 812 is exposed on the side wall of the threaded connector 81. The side wall of the threaded connector 81 is provided with a mounting hole 811, which communicates with the groove 812. The pull rope 8 is snapped into the groove 812, and the fixing block at its bottom is located in the mounting hole 811. The user can insert the fixing block at the end of the pull rope 8 into the mounting hole 811, and the lower end of the pull rope 8 can enter the groove 812 from the opening of the groove 812, thereby realizing the snapping of the pull rope 8 with the threaded connector 81.

[0039] Reference Figure 3 , Figure 9 , Figure 10 and Figure 11 The upper end of the drive block 5 is shaft-shaped, and the top of the drive block 5 is provided with an insertion hole 53. The threaded connection part 813 is located in the insertion hole 53 and is threadedly connected to the insertion hole 53, so that the lower end of the threaded joint 81 is threadedly connected to the upper end of the drive block 5. The upper end of the drive block 5 is movably inserted into the hollow shaft 71. The bottom end of the drive block 5 extends outward to form a Z-shaped sliding part 52. The two opposite sides of the sliding part 52 are respectively provided with a sliding surface 51, and the two sliding surfaces 51 are staggered. The sliding part 52 at the lower end of the drive block 5 is inserted into the slot on the top surface of the wheel frame 4. The two brakes 6 are slidably disposed in the slot on the top surface of the wheel frame 4 and are elastically connected to the wheel frame 4. Each brake 6 includes a slider 61, a connecting rod 63 and a brake lever 62. The slider 61 is slidably disposed in the slot on the top surface of the wheel frame 4 and is elastically connected to the wheel frame 4. 62 is connected to slider 61 via connecting rod 63 to form a U-shape (i.e., the entire brake component 6 is U-shaped). Each slider 61 has an inclined surface 611 on the side near the drive block 5. The other side of each slider 61 opposite to its upper inclined surface 611 is elastically connected to the wheel frame 4 via a spring. The two inclined surfaces 611 are respectively slidably engaged with the two sliding surfaces 51. In this utility model, each slider 61 is integrally formed with the corresponding connecting rod 63 and brake rod 62. The two brake rods 62 point in opposite directions. The slider 61 and connecting rod 63 are both located in the slot of the wheel frame 4. When the brake wheel is in the braking state, the two brake rods 62 extend from the two side holes 41 to the outside of the wheel frame 4 and are inserted into the brake groove 751 of the corresponding wheel 75. In this utility model, the two brake rods 62 are located on the side of the rotating shaft and are perpendicular to the corresponding wheel 75.

[0040] Reference Figure 12The brake wheel of this utility model is mainly used on luggage. The luggage shell is sandwiched in the gap between the outer wheel seat 1 and the inner wheel seat 2. The protective tube 74 is connected to the brake control box 91 of the luggage. The upper end of the pull rope 8 is located inside the brake control box 91. The drive device inside the brake control box 91 can pull the pull rope 8, pull the drive block 5, and realize the braking action. The luggage pull rod 9 is located above the brake control box 91.

[0041] The working principle of this simple traction brake wheel is as follows:

[0042] Pulling the pull rope 8 outward causes the lower end of the pull rope 8 to move the threaded joint 81 upward inside the hollow shaft 71. The threaded joint 81 drives the drive block 5 to move upward, and the two sliders 61 slide outward and compress their respective springs, causing the two brake levers 62 to move outward along the corresponding side holes 41 until the left brake lever 62 is inserted into a brake groove 751 in the left wheel 75 and the right brake lever 62 is inserted into a brake groove 751 in the right wheel 75, locking the two wheels 75. At this time, the entire brake wheel is in a locked braking state.

[0043] Release the pull rope 8, and the two sliders 61 slide inward and reset under the action of their respective springs, causing the two brake levers 62 to move inward along the corresponding side holes 41 respectively. The drive block 5 and the threaded joint 81 move downward under the joint pressure of the two sliders 61 until the left brake lever 62 exits from the brake groove 751 of the left wheel 75 and the right brake lever 62 exits from the brake groove 751 of the right wheel 75, unlocking the two wheels 75. At this time, the entire brake wheel is in the unlocked state.

[0044] This utility model's simplified traction brake wheel uses a threaded connector 81 to directly connect the pull rope 8 to the drive block 5. One end of the threaded connector 81 is engaged with the pull rope 8, and the other end is threadedly connected to the drive block 5. This simplifies the connection structure between the pull rope 8 and the drive block 5, and simplifies the traction drive block 5. The entire brake wheel structure is simple, which not only reduces manufacturing and assembly costs, but also makes it less prone to failure during long-term use, thus improving the reliability and service life of the wheel.

[0045] The travel bag of this utility model has a brake wheel controlled by a pull rope 8 located at the bottom of the suitcase. The pull rope 8 is controlled by a brake control box 91 to achieve the purpose of quick braking, which is convenient for users.

[0046] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A simple tow brake wheel comprising a fixed wheel base, two wheels and a tow rope, characterized in that, The bottom of the fixed wheel seat is rotatably connected to a wheel support. The two wheels are rotatably disposed on both sides of the wheel support. The wheel support is provided with two brakes to prevent the two wheels from rotating. A drive block for driving the two brakes to slide is slidably connected between the two brakes. A threaded joint is threadedly connected to the top of the drive block. One end of the pull rope is engaged with the threaded joint, and the other end of the pull rope passes through the fixed wheel seat and extends outside the fixed wheel seat.

2. The simple traction brake wheel according to claim 1, characterized in that The threaded connector has a threaded connection part at the bottom and a socket at the top of the drive block. The threaded connection part is located inside the socket and is threadedly connected to the socket.

3. The simple traction brake wheel of claim 1, wherein, The threaded connector has a cross-shaped groove at the top, the opening of which is exposed on the side wall of the threaded connector. The side wall of the threaded connector has a mounting hole that communicates with the groove. The pull rope is engaged in the groove, and the fixing block at its bottom is located in the mounting hole.

4. The simplified traction brake wheel according to claim 1, characterized in that, The pull rope is covered with a protective tube, and a pressure sleeve is fitted at the end of the protective tube. A fixing seat is fitted together with the pressure sleeve and the protective tube, and the fixing seat is installed on the fixing wheel seat.

5. The simplified traction brake wheel according to claim 4, characterized in that, The fixed wheel seat includes an outer wheel seat and an inner wheel seat. The inner wheel seat is located inside the outer wheel seat and forms a gap between it and the outer wheel seat for clamping the housing. The lower end of the fixed seat is fixed to the inner wheel seat, and the upper end of the fixed seat passes through the outer wheel seat.

6. The simplified traction brake wheel according to claim 4, characterized in that, A retaining ring is sandwiched between the pressure sleeve and the step inside the fixing seat. The retaining ring is sleeved on the outside of the protective tube. Multiple claws extend obliquely from the inner edge of the retaining ring towards the center of the retaining ring. All the claws together clamp the protective tube.

7. The simplified traction brake wheel according to claim 1, characterized in that, The fixed wheel seat is connected to the wheel support via a hollow shaft. The upper end of the hollow shaft is engaged with the fixed wheel seat via a washer and a retaining ring, and the lower end of the hollow shaft is attached to the wheel support. The threaded joint is located inside the hollow shaft.

8. The simplified traction brake wheel according to claim 1, characterized in that, The two braking components are slidably disposed in the wheel support in opposite directions and are elastically connected to the wheel support.

9. The simplified traction brake wheel according to claim 8, characterized in that, Each of the braking components includes a slider, a connecting rod, and a brake lever. The slider is slidably disposed within the wheel support and elastically connected to the wheel support. The brake lever is connected to the slider via the connecting rod to form a U-shape. The side of the wheel support is provided with a side hole for the brake lever to extend outside the wheel support.

10. The simplified traction brake wheel according to claim 9, characterized in that, The bottom end of the drive block is provided with a sliding joint, and two opposite sides of the sliding joint are respectively provided with sliding surfaces at an incline. The two sliding surfaces are staggered. Each slider is provided with an inclined surface on the side near the drive block. The two inclined surfaces are respectively in one-to-one sliding engagement with the two sliding surfaces.

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