Damping mechanism for draw-bar box wheels

Abstract

The utility model discloses a shock-absorbing mechanism for draw-bar box wheels, which comprises a mounting rack, two sides of the mounting rack are connected with shock-absorbing racks in a sliding manner, the inner top surface of each shock-absorbing rack is fixedly connected with two fixing plates, and a sliding rod is fixedly connected between the two fixing plates. When moving on a bumpy road, the mounting frame slides towards the interior of the damping frame, in the sliding process, the two connecting rods rotate and push the two sliding blocks to move towards the middle of the sliding rod, in the moving process, the reset springs are extruded to generate elastic deformation, and counter-acting force is exerted on the two sliding blocks, so that the damping effect is achieved. After the counter-acting force generated by the reset spring and the force applied by the sliding block are balanced, the reset spring recovers the elastic deformation and pushes the sliding block to restore the original position, so that the mounting frame is reset, the shock absorption of the draw-bar box is realized, and the shock amplitude of the draw-bar box is effectively reduced; and the safety of articles in the draw-bar box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage case accessories, in particular to a shock absorbing mechanism for a trolley case wheel. Background Art

[0002] A trolley case is a suitcase with a trolley and wheels. It is easy to use and widely used in daily life. The wheels of the trolley case are basically located at the bottom of the case, which is to facilitate the dragging of the suitcase, reduce the resistance with the ground, and facilitate the movement of the trolley case.

[0003] Currently, most suitcase wheels are composed of a steering mechanism and a wheel hub. When the suitcase is moved on a bumpy road, it will also experience large fluctuations. If the suitcase contains fragile items, it is easy to cause damage, thereby causing economic losses. Utility Model Content

[0004] The utility model aims to provide a shock absorbing mechanism for a trolley case wheel to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock-absorbing mechanism for a trolley case wheel, comprising a mounting frame, shock-absorbing frames are slidably connected to both sides of the mounting frame, two fixed plates are fixedly connected to the inner top surface of the shock-absorbing frame, a sliding rod is fixedly connected between the two fixed plates, two sliding blocks are slidably connected to the outer surface of the sliding rod, the bottom ends of the two sliding blocks are rotatably connected to connecting rods, the other ends of the two connecting rods are rotatably connected to the top end of the mounting frame, a return spring is sleeved on the outer surface of the sliding rod and located between the two sliding blocks, a micro damper is fixedly connected to the top of the mounting frame and located on both sides of the sliding rod, and the other ends of the two micro dampers are fixedly connected to the inner top of the shock-absorbing frame.

[0006] As a further preferred embodiment of the present technical solution, a fixed shaft is fixedly connected inside the mounting frame, two bearings are rotatably connected to the outer surface of the fixed shaft, a plurality of connecting plates are fixedly connected to the outer surfaces of two bearings, a reinforcing plate is fixedly connected between two adjacent connecting plates, and the other ends of the plurality of connecting plates are respectively fixedly connected to two wheel rims.

[0007] As a further preferred embodiment of the technical solution, a plurality of the connecting plates are penetrated with triangular through holes on one side, and the outer surfaces of the two wheel rims are fixedly connected with anti-slip grooves.

[0008] As a further preferred embodiment of the technical solution, two positioning grooves are provided on both side walls inside the shock absorbing frame, two positioning rods are fixedly connected to both sides of the mounting frame, and the outer surfaces of the four positioning rods are slidably connected to the inside of the four positioning grooves respectively.

[0009] As a further preferred embodiment of the present technical solution, positioning columns are fixedly connected at the top of the mounting frame and near the four corners, circular through holes are penetrated through the top of the shock absorber frame and near the four corners, and the outer surfaces of the four positioning columns are slidably connected to the inside of the four circular through holes respectively.

[0010] As a further preferred embodiment of the present technical solution, a thread groove is formed on the top of each of the four positioning posts, and a limiting cap is threadedly connected inside each of the four thread grooves.

[0011] As a further preferred embodiment of the technical solution, a connecting seat is fixedly connected to the top of the shock absorbing frame, and a mounting plate is rotatably connected to the top of the connecting seat.

[0012] The utility model provides a shock absorbing mechanism for a trolley case wheel, which has the following beneficial effects:

[0013] (1) The utility model allows the mounting frame to slide into the shock-absorbing frame when it moves on a bumpy road. During the sliding process, the two connecting rods rotate and push the two sliders to move toward the middle of the slider. During the movement, the return spring is squeezed and elastically deformed to exert a reaction force on the two sliders, thereby offsetting the sliding degree of the mounting frame in the shock-absorbing frame. After the reaction force generated by the return spring is balanced with the force exerted by the slider, the return spring restores the elastic deformation and pushes the slider to return to its original position, thereby resetting the mounting frame, thereby achieving shock absorption of the trolley case, effectively reducing the vibration amplitude of the trolley case, and improving the safety of the items inside the trolley case.

[0014] (2) The utility model increases the strength of the trolley case wheel by cooperating with the connecting plate and the reinforcing plate, enabling it to bear a higher weight, and by setting the triangular through holes, the trolley case wheel can be lightened, thereby indirectly reducing the overall weight of the trolley case. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an exploded schematic diagram of the mounting frame and shock-absorbing frame structure of the utility model;

[0017] Figure 3 The utility model is called Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0018] Figure 4 It is a cross-sectional view of the wheel rim and bearing structure of the utility model.

[0019] In the figure: 1. mounting frame; 2. shock absorber frame; 3. connecting rod; 4. slider; 5. fixing plate; 6. sliding rod; 7. return spring; 8. micro damper; 9. fixing shaft; 10. bearing; 11. connecting plate; 12. reinforcing plate; 13. wheel rim; 14. triangular through hole; 15. positioning groove; 16. positioning rod; 17. positioning column; 18. circular through hole; 19. threaded groove; 20. limiting cap; 21. connecting seat; 22. mounting plate; 23. anti-slip pattern. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1-3 As shown, in the present embodiment, a shock absorbing mechanism for a trolley case wheel comprises a mounting frame 1, shock absorbing frames 2 are slidably connected to both sides of the mounting frame 1, two fixing plates 5 are fixedly connected to the top surface of the inner part of the shock absorbing frame 2, a sliding rod 6 is fixedly connected between the two fixing plates 5, two sliding blocks 4 are slidably connected to the outer surface of the sliding rod 6, the bottom ends of the two sliding blocks 4 are rotatably connected to connecting rods 3, the other ends of the two connecting rods 3 are rotatably connected to the top end of the mounting frame 1, a return spring 7 is sleeved on the outer surface of the sliding rod 6 and located between the two sliding blocks 4, a micro damper 8 is fixedly connected at the top end of the mounting frame 1 and located at both sides of the sliding rod 6, and the other ends of the two micro dampers 8 are fixedly connected to the top end of the inner part of the shock absorbing frame 2, wherein, by providing the mounting frame 1, the wheel rim 13 can be fixed, by providing the shock absorbing frame 2, the mounting frame 1 can be made to slide inside the shock absorbing frame 2, thereby reducing the amplitude of the shaking of the trolley case, and by providing the return spring 7, a reaction force can be applied to the sliding block 4 when the return spring 7 contracts, thereby offsetting the upward force of the mounting frame 1.

[0022] like Figure 1 and Figure 4 As shown, a fixed shaft 9 is fixedly connected inside the mounting frame 1, and two bearings 10 are rotatably connected to the outer surface of the fixed shaft 9. A plurality of connecting plates 11 are fixedly connected to the outer surfaces of the two bearings 10, and a reinforcing plate 12 is fixedly connected between two adjacent connecting plates 11. The other ends of the plurality of connecting plates 11 are respectively fixedly connected to two wheel rims 13. By setting the connecting plates 11, the bearings 10 can be connected to the wheel rims 13. By setting the reinforcing plates 12, the connection strength and stability between the wheel rims 13 and the bearings 10 can be improved, and the pressure-bearing capacity of the wheel rims 13 can be improved.

[0023] like Figure 1 As shown, a plurality of connecting plates 11 are penetrated with triangular through holes 14 on one side, and the outer surfaces of the two wheel rims 13 are fixedly connected with anti-skid grooves 23. By providing the triangular through holes 14, the wheels of the trolley case can be lightweight, and by providing the anti-skid grooves 23, the wheel rims can be prevented from slipping.

[0024] like Figure 2 As shown, two positioning grooves 15 are provided on both side walls inside the shock absorbing frame 2, and two positioning rods 16 are fixedly connected on both sides of the mounting frame 1. The outer surfaces of the four positioning rods 16 are slidably connected to the inside of the four positioning grooves 15 respectively. By setting the positioning rods 16 and the positioning grooves 15, the stability of the mounting frame 1 can be improved.

[0025] like Figure 2 As shown, positioning columns 17 are fixedly connected at the top of the mounting frame 1 and near the four corners, and circular through holes 18 are penetrated through the top of the shock absorbing frame 2 and near the four corners. The outer surfaces of the four positioning columns 17 are slidably connected to the inside of the four circular through holes 18 respectively. By providing the positioning columns 17, the stability between the mounting frame 1 and the shock absorbing frame 2 can be further improved.

[0026] like Figure 2 As shown, the top ends of the four positioning posts 17 are all provided with thread grooves 19 , and the interiors of the four thread grooves 19 are all threadedly connected with limiting caps 20 , which can prevent the positioning posts 17 from falling off from the shock-absorbing frame 2 .

[0027] like Figure 1 As shown, a connecting seat 21 is fixedly connected to the top of the shock-absorbing frame 2, and a mounting plate 22 is rotatably connected to the top of the connecting seat 21 for fixing to the trolley case.

[0028] The utility model provides a shock absorbing mechanism for a trolley case wheel, and the specific working principle is as follows:

[0029] When the suitcase passes through a bumpy road, the outer ring 13 and the mounting frame 1 slide inside the shock-absorbing frame 2. During the sliding process of the mounting frame 1, the two connecting rods 3 rotate and push the two sliders 4 to move toward the middle of the slide bar 6. During the movement, the return spring 7 is squeezed and elastically deformed, which exerts a reaction force on the two sliders 4, reducing the sliding degree of the mounting frame 1 in the shock-absorbing frame 2. After the reaction force generated by the return spring 7 is balanced with the force exerted by the slider 4, the return spring 7 restores the elastic deformation and pushes the slider 4 to return to its original position, so that the mounting frame 1 is reset to reduce the shock of the suitcase.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock absorbing mechanism for a trolley case wheel, comprising a mounting frame (1), characterized in that: The mounting frame (1) is slidably connected to shock absorbing frames (2) on both sides, the internal top surface of the shock absorbing frame (2) is fixedly connected to two fixing plates (5), a sliding rod (6) is fixedly connected between the two fixing plates (5), the outer surface of the sliding rod (6) is slidably connected to two sliding blocks (4), the bottom ends of the two sliding blocks (4) are both rotatably connected to connecting rods (3), the other ends of the two connecting rods (3) are rotatably connected to the top of the mounting frame (1), the outer surface of the sliding rod (6) and located between the two sliding blocks (4) are sleeved with a return spring (7), the top of the mounting frame (1) and located on both sides of the sliding rod (6) are fixedly connected to micro dampers (8), and the other ends of the two micro dampers (8) are fixedly connected to the internal top of the shock absorbing frame (2).

2. A shock absorbing mechanism for a trolley case wheel according to claim 1, characterized in that: A fixed shaft (9) is fixedly connected inside the mounting frame (1), and two bearings (10) are rotatably connected to the outer surface of the fixed shaft (9). A plurality of connecting plates (11) are fixedly connected to the outer surfaces of the two bearings (10), and a reinforcing plate (12) is fixedly connected between two adjacent connecting plates (11). The other ends of the plurality of connecting plates (11) are respectively fixedly connected to two wheel rims (13).

3. The shock absorbing mechanism for a trolley case wheel according to claim 2, characterized in that: A triangular through hole (14) is formed through one side of each of the plurality of connecting plates (11), and anti-slip grooves (23) are fixedly connected to the outer surfaces of the two wheel rims (13).

4. The shock absorbing mechanism for a trolley case wheel according to claim 1, characterized in that: Two positioning grooves (15) are provided on both side walls inside the shock absorbing frame (2), and two positioning rods (16) are fixedly connected to both sides of the mounting frame (1), and the outer surfaces of the four positioning rods (16) are respectively slidably connected to the inside of the four positioning grooves (15).

5. The shock absorbing mechanism for a trolley case wheel according to claim 4, characterized in that: Positioning columns (17) are fixedly connected at the top of the mounting frame (1) and near the four corners, and circular through holes (18) are penetrated through the top of the shock absorbing frame (2) and near the four corners, and the outer surfaces of the four positioning columns (17) are respectively slidably connected to the inside of the four circular through holes (18).

6. The shock absorbing mechanism for a trolley case wheel according to claim 5, characterized in that: Four The top of the positioning column (17) is provided with a thread groove (19), and the inside of the four thread grooves (19) are all threadedly connected with a limiting cap (20).

7. The shock absorbing mechanism for a trolley case wheel according to claim 6, characterized in that: The top end of the shock absorbing frame (2) is fixedly connected to a connecting seat (21), and the top end of the connecting seat (21) is rotatably connected to a mounting plate (22).

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