CN211617315U

CN211617315U - Damping universal wheel

Info

Publication number: CN211617315U
Application number: CN201922226930.XU
Authority: CN
Inventors: 许棋鸿
Original assignee: Jinjiang Hongrui Plastic Products Co ltd
Current assignee: Jinjiang Hongrui Plastic Products Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-02
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a shock attenuation universal wheel belongs to universal wheel technical field, including fixing base, protection casing, gyro wheel, be provided with the pivot on the gyro wheel, the protection casing is provided with the axle sleeve with the pivot junction, axle sleeve and protection casing swing joint, the utility model discloses utilize the spring to provide reaction force for change gyro wheel and ground connected mode, improve the transmission stability of universal wheel, the guide pillar is along with the gyro wheel rebound simultaneously, and then the guide pillar provides drive power for clamping structure through carrying the structure of drawing, thereby clamping structure carries out the centre gripping effect to the axle sleeve, plays the effect of removing on slowing down the axle sleeve, and then can avoid receiving the impulsive force when too big as the gyro wheel, the axle sleeve rises fastly to the axle sleeve rises apart from the overlength, causes the damage of protection casing inner structure, plays the effect of guaranteeing the universal wheel.

Description

Damping universal wheel

Technical Field

The utility model discloses a shock attenuation universal wheel belongs to universal wheel technical field.

Background

The universal wheels are so-called movable casters, and the structure of the universal wheels allows 360-degree horizontal rotation, namely, the brackets for mounting the casters can horizontally rotate 360 degrees in dynamic load or static load; the universal wheel case and bag that has used the universal wheel at present has brought the convenience for people's trip, has alleviateed people's intensity of labour greatly, and traditional universal wheel case and bag, the universal wheel is fixed on the case and bag.

At present, chinese patent with publication number CN103358816A discloses a novel universal wheel, including casing and truckle, the casing lower extreme is equipped with the bearing frame, and the bearing frame both sides are equipped with the truckle through pin joint, truckle outside axle center department is equipped with sealed lid.

Among the above-mentioned prior art, simple structure, leakproofness are good, but do not possess fine atress damping performance for when universal wheel and the hard contact in ground, the phenomenon of jolting can hardly appear in the equipment of universal wheel top, and stability can not obtain fine assurance, also can increase the loss of universal wheel simultaneously, has reduced the life of universal wheel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving foretell problem and providing a shock attenuation universal wheel, utilize the spring to provide reaction force, make change gyro wheel and ground connected mode, improve the transmission stability of universal wheel, the guide pillar is along with the gyro wheel rebound simultaneously, and then the guide pillar provides drive power for clamping structure through carrying the structure of drawing, thereby clamping structure carries out the centre gripping effect to the axle sleeve, play the effect that slows down the removal on the axle sleeve, and then can avoid receiving when the impulse is too big when the gyro wheel, the axle sleeve rising speed is too fast, and axle sleeve rising distance overlength, cause the damage of protection casing inner structure, play the effect of protecting the universal wheel.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a shock attenuation universal wheel, including fixing base, protection casing, gyro wheel, be provided with the pivot on the gyro wheel, the protection casing is provided with the axle sleeve with the pivot junction, axle sleeve and protection casing swing joint, the axle sleeve is provided with the guide pillar on being close to one side of fixing base, the spring is established to guide pillar outside cover, one side that the guide pillar is close to the fixing base is provided with the baffle, spring one end is connected with the baffle, and the other end is connected with the axle sleeve, one side that the guide pillar was kept away from to the protection casing and baffle is provided with the cavity, the inside baffle of being provided with of cavity is carried and is carried the structure and be connected, the both sides of axle sleeve are provided with clamping.

Through adopting above-mentioned technical scheme, when the gyro wheel receives the impulsive force with ground, the impulsive force promotes the gyro wheel rebound, and then the axle sleeve extrudees the spring, utilize the spring to provide reaction force, make change gyro wheel and ground connected mode, improve the transmission stability of universal wheel, the guide pillar is along with the gyro wheel rebound simultaneously, and then the guide pillar provides drive power for clamping structure through carrying the structure of drawing, thereby clamping structure carries out the centre gripping effect to the axle sleeve, play and slow down the effect that the axle sleeve removed, and then can avoid receiving the impulsive force when too big when the gyro wheel, the axle sleeve rises fastly, and axle sleeve rising distance overlength, cause the damage of protection casing inner structure, play the effect of guaranteeing the universal wheel.

Preferably, the lifting structure comprises a connecting rod and two fixing rods, the connecting rod is located inside the cavity and fixedly connected with the guide pillar, the two fixing rods are symmetrically arranged at two ends of the connecting rod, and the fixing rods are in transmission connection with the clamping structure.

Through adopting above-mentioned technical scheme, utilize the cooperation between connecting rod, the dead lever, realize carrying and draw the structure and provide driven effect for clamping structure.

Preferably, the clamping structure comprises a propelling block, a moving plate and a clamping plate, the propelling block is fixedly connected with the fixed rod, the propelling block is slidably connected with the moving plate, the moving plate is connected with the clamping plate, and the clamping plate is attached to the shaft sleeve.

Through adopting above-mentioned technical scheme, utilize the cooperation between propulsion piece, movable plate, the grip block, realize the centre gripping effect to the axle sleeve.

Preferably, an elastic element is arranged between the moving plate and the clamping plate.

By adopting the technical scheme, the flexible connection is formed between the moving plate and the clamping plate by utilizing the elastic element, so that the clamping force of the clamping plate on the shaft sleeve is avoided being overlarge.

Preferably, a sliding groove is formed in the joint of the partition plate, the moving plate and the clamping plate.

Through adopting above-mentioned technical scheme, utilize the spout to play the effect that reduces the frictional resistance that receives when movable plate and grip block remove.

Preferably, the sliding groove adopts a dovetail groove structure.

By adopting the technical scheme, the dovetail groove structure is utilized to play a role in fixing the movable plate and the clamping plate, and the movable plate and the clamping plate are prevented from falling off.

Preferably, the connection surface of the pushing block and the moving plate is an inclined surface, and the connection surface of the moving plate and the pushing block is an inclined surface.

Through adopting above-mentioned technical scheme, utilize mutually supporting between the inclined plane, when realizing that the propulsion piece upwards removes, promote the movable plate and remove to being close to the axle sleeve direction.

Preferably, the elastic element is made of isoprene rubber.

Through adopting above-mentioned technical scheme, isoprene rubber has fine elasticity, can slow down the effort of movable plate to the grip block.

Preferably, the roller is made of ABS plastic.

By adopting the technical scheme, the ABS plastic has the characteristics of toughness, hardness and rigidity, and the using effect of the roller can be improved.

Compared with the prior art, the beneficial effects of the utility model are that:

when the gyro wheel receives the impulsive force with ground, the impulsive force promotes the gyro wheel rebound, and then the axle sleeve extrudees the spring, utilize the spring to provide reaction force, make change gyro wheel and ground connected mode, improve the transmission stability of universal wheel, the guide pillar is along with the gyro wheel rebound simultaneously, and then the guide pillar provides drive power for clamping structure through carrying the pull-up structure, thereby clamping structure carries out the centre gripping effect to the axle sleeve, play and slow down the effect of removing on the axle sleeve, and then can avoid receiving when the impulsive force is too big when the gyro wheel, axle sleeve rising speed is too fast, and axle sleeve rising distance overlength, cause the damage of protection casing inner structure, play the effect of guaranteeing the universal wheel.

Drawings

Fig. 1 is a schematic structural view of a damping universal wheel of the present invention, which is mainly used for showing the overall structure of the damping universal wheel;

fig. 2 is a schematic front sectional view of the protective cover of the present invention, which is mainly used to show the internal structure of the protective cover;

fig. 3 is a side view of the protective cover of the present invention, which is mainly used to show the internal structure of the protective cover.

Reference numerals: 1. a fixed seat; 2. a protective cover; 3. a roller; 4. a rotating shaft; 5. a shaft sleeve; 6. a guide post; 7. a connecting rod; 8. a partition plate; 9. a cavity; 10. a spring; 11. a clamping plate; 12. a chute; 13. a propulsion block; 14. fixing the rod; 15. an elastic element; 16. and (5) moving the plate.

Detailed Description

In the following description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like refer to the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 2 and 3, a damping universal wheel comprises a fixed seat 1, a protective cover 2 and a roller 3, wherein the roller 3 is made of ABS plastic, which has the characteristics of toughness, hardness and rigidity, and can improve the use effect of the roller 3, the roller 3 is provided with a rotating shaft 4, a shaft sleeve 5 is arranged at the joint of the protective cover 2 and the rotating shaft 4, the shaft sleeve 5 is movably connected with the protective cover 2, so that when the roller 3 and the ground are subjected to an impact force, the impact force pushes the roller 3 to move upwards, the roller 3 drives the shaft sleeve 5 to move upwards through the rotating shaft 4, a guide pillar 6 is arranged on one side of the shaft sleeve 5, which is close to the fixed seat 1, a spring 10 is sleeved outside the guide pillar 6, a partition plate 8 is arranged on one side of the guide pillar 6, which is close to the fixed seat 1, one end of the spring 10 is connected with the partition plate 8, meanwhile, the shaft sleeve 5 extrudes the spring 10, the spring 10 is utilized to provide a reaction force, a buffering action force is provided for the shaft sleeve 5, the connection mode of the roller 3 and the ground is changed, the transmission stability of the universal wheel is improved, the guide pillar 6 is utilized to limit the stretching direction of the spring 10, the effect of protecting the spring 10 is achieved, and the service life of the spring 10 is prolonged, meanwhile, a cavity 9 is arranged on one side, away from the guide pillar 6, of the protective cover 2 and the partition plate 8, a lifting structure is arranged inside the cavity 9, the guide pillar 6 penetrates through the partition plate 8 to be connected with the lifting structure, the lifting structure comprises a connecting rod 7 and fixing rods 14, the connecting rod 7 is positioned inside the cavity 9, the connecting rod 7 is fixedly connected with the guide pillar 6, when the guide pillar 6 moves upwards, the connecting rod 7 is driven to move upwards, the fixing rods 14 are, the fixed rod 14 is in transmission connection with the clamping structure, the clamping structure comprises a propelling block 13, a moving plate 16 and a clamping plate 11, the propelling block 13 is fixedly connected with the fixed rod 14, the fixed rod 14 drives the propelling block 13 to move upwards, the propelling block 13 is in sliding connection with the moving plate 16, so that when the propelling block 13 moves upwards, the moving plate 16 is pushed to move towards the direction close to the shaft sleeve 5, the connecting surface of the propelling block 13 and the moving plate 16 is an inclined surface, the connecting surface of the moving plate 16 and the propelling block 13 is an inclined surface, the effect that the propelling block 13 pushes the moving plate 16 to move towards the direction close to the shaft sleeve 5 is enhanced by utilizing the mutual matching between the inclined surfaces, the moving plate 16 is connected with the clamping plate 11, so that the moving plate 16 pushes the clamping plate 11 to move towards the direction close to the shaft sleeve 5, the clamping plate 11 is attached to the shaft, further, the phenomenon that when the impact force on the roller 3 is too large, the shaft sleeve 5 ascends too fast, and the ascending distance of the shaft sleeve 5 is too long, which causes damage to the internal structure of the protective cover 2, and the effect of protecting the universal wheel is achieved, meanwhile, the connecting part of the partition plate 8, the moving plate 16 and the clamping plate 11 is provided with the sliding groove 12, when the moving plate 16 pushes the clamping plate 11 to move towards the direction close to the shaft sleeve 5, the sliding groove 12 is used for reducing the friction resistance force applied when the moving plate 16 and the clamping plate 11 move, so that the moving efficiency of the moving plate 16 and the clamping plate 11 is improved, the sliding groove 12 adopts a dovetail groove structure, the dovetail groove structure is used for fixing the moving plate 16 and the clamping plate 11, the phenomenon that when the pushing block 13 pushes the moving plate 16 to move, the moving plate 16 moves to generate deviation, and further the stability of transmission is improved, therefore, when the moving plate 16 pushes the clamping plate 11 to move, the acting force of the moving plate 16 on the clamping plate 11 is reduced by the elastic element 15, the phenomenon that the clamping force of the clamping plate 11 on the shaft sleeve 5 is too large, and the buffering effect on the shaft sleeve 5 is influenced is avoided, meanwhile, the elastic element 15 is made of isoprene rubber, the isoprene rubber has good elasticity, the acting force of the moving plate 16 on the clamping plate 11 can be effectively reduced, and the service life of the elastic element 15 is prolonged.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A damping universal wheel comprises a fixed seat (1), a protective cover (2) and a roller (3), wherein a rotating shaft (4) is arranged on the roller (3), and the damping universal wheel is characterized in that a shaft sleeve (5) is arranged at the joint of the protective cover (2) and the rotating shaft (4), the shaft sleeve (5) is movably connected with the protective cover (2), a guide pillar (6) is arranged on one side, close to the fixed seat (1), of the shaft sleeve (5), a spring (10) is sleeved outside the guide pillar (6), a partition plate (8) is arranged on one side, close to the fixed seat (1), of the guide pillar (6), one end of the spring (10) is connected with the partition plate (8), the other end of the spring is connected with the shaft sleeve (5), a cavity (9) is arranged on one side, far away from the guide pillar (6), of the protective cover (2) and the partition plate (8), a lifting structure is arranged inside the cavity (, and clamping structures are arranged on two sides of the shaft sleeve (5), and the lifting structure is in transmission connection with the clamping structures.

2. A shock absorbing castor as set forth in claim 1 wherein: the lifting structure comprises a connecting rod (7) and two fixing rods (14), the connecting rod (7) is located inside the cavity (9), the connecting rod (7) is fixedly connected with the guide pillar (6), the two fixing rods (14) are symmetrically arranged at two ends of the connecting rod (7), and the fixing rods (14) are in transmission connection with the clamping structure.

3. A shock absorbing castor as set forth in claim 2 wherein: the clamping structure comprises a propelling block (13), a moving plate (16) and a clamping plate (11), the propelling block (13) is fixedly connected with a fixed rod (14), the propelling block (13) is slidably connected with the moving plate (16), the moving plate (16) is connected with the clamping plate (11), and the clamping plate (11) is attached to the shaft sleeve (5).

4. A shock absorbing castor as set forth in claim 3 wherein: an elastic element (15) is arranged between the moving plate (16) and the clamping plate (11).

5. The shock absorbing universal wheel of claim 4, wherein: and a sliding groove (12) is arranged at the joint of the partition plate (8) and the moving plate (16) and the clamping plate (11).

6. The shock absorbing universal wheel of claim 5, wherein: the sliding groove (12) adopts a dovetail groove structure.

7. The shock absorbing universal wheel of claim 4, wherein: the plane of connection of the pushing block (13) and the moving plate (16) is an inclined plane, and the plane of connection of the moving plate (16) and the pushing block (13) is an inclined plane.

8. The shock absorbing universal wheel of claim 4, wherein: the elastic element (15) is made of isoprene rubber.

9. A shock absorbing castor as set forth in claim 1 wherein: the roller (3) is made of ABS plastic.