CN211808832U - Service life-prolonged caster - Google Patents

Abstract

The utility model discloses an increase of service life's truckle, including support, wheel lid and side cover, the support is the single armed structure, the bottom of support is provided with the shaft, the shaft with the jogged joint at wheel lid center, the wheel lid is used for rotating at the shaft, is provided with first fastener on the outer lateral wall of wheel lid centre bore, is provided with the second fastener on the lateral wall of side cover, and the block of first fastener and second fastener makes the side cover lid one side of relative single armed structure on the wheel lid. Above-mentioned technical scheme sets up the fixed position of limit cover and wheel cap on the lateral wall outside the hole of wheel cap and wheel hub connection, is tight fit and zero clearance between the limit cover of this fixed position and the wheel cap, can not take place the friction between limit cover and the wheel cap when rotating, can not produce the noise on the one hand, and on the other hand does not have lubricating oil and flows out, and avoids the limit cover to receive frictional force and wearing and tearing, the life of extension truckle.

Description

Service life-prolonged caster

Technical Field

The utility model relates to a truckle field especially relates to an increase of service life's truckle.

Background

Referring to fig. 1 and 2, a shaft is arranged in the middle of the side cover 3 in the caster, a hole is formed in the middle of the wheel cover 2 and connected with the wheel shaft of the support 1, the shaft in the middle of the side cover is pressed into the hole of the wheel shaft of the support to fix the side cover, and the side cover can prevent the wheel shaft of the support and wheel lubricant in the central hole of the wheel cover from flowing out. However, this method has the following disadvantages:

1. when the wheels are in a walking state, friction can occur between the side covers and the wheel covers, so that noise is generated, and the service life of the caster is influenced.

2. The clearance between the side cover and the wheel cover is large, and partial lubricating oil flows out of the clearance after the wheels walk, so that the floor is dirty.

SUMMERY OF THE UTILITY MODEL

Therefore, it is desirable to provide a service life-prolonged caster, which solves the problem that the side cover and the wheel cover rub to reduce the service life.

In order to achieve the above purpose, the inventor provides a service life-prolonged caster, which comprises a support, a wheel cover and a side cover, wherein the support is of a single-arm structure, the bottom of the support is provided with a wheel shaft, the wheel shaft is connected with a hole in the center of the wheel cover, the wheel cover is used for rotating on the wheel shaft, a first fastening piece is arranged on the side wall outside the central hole of the wheel cover, a second fastening piece is arranged on the side wall of the side cover, and the side cover is covered on one side, opposite to the single-arm structure, of the wheel cover through the clamping of the first fastening piece and the second fastening piece.

Further, the first fastener is a groove or a pin.

Further, the second fastener is a groove or a pin.

Further, the first fastener is a plurality of, the second fastener is a plurality of, and 1 first fastener corresponds to 1 second fastener.

Further, a plurality of first fasteners are arranged on the side wall outside the central hole of the wheel cover in an annular array.

Further, a plurality of second fasteners are arranged on the side wall of the side cover in an annular array.

Furthermore, the upper end of support is provided with screw contact pin, screw contact pin is used for connecting external equipment.

Further, the diameter of the side cover is slightly smaller than that of the wheel cover.

Further, the wheel cover is of a hollow structure.

Further, the center of the wheel cover is arranged offset from the axis of the bracket.

Be different from prior art, above-mentioned technical scheme sets up the fixed part of side cover and wheel cap on the lateral wall outside the hole that wheel cap and shaft are connected, be tight fit and zero clearance between the side cover of this fixed part and the wheel cap, can not take place the friction between side cover and the wheel cap when rotating, can not produce the noise on the one hand, and on the other hand does not have lubricating oil and flows out, and avoids the side cover to receive frictional force and wearing and tearing, prolongs the life of truckle.

Drawings

FIG. 1 is a schematic structural view of a wheel cover according to the prior art;

FIG. 2 is a schematic structural diagram of a side cover according to the prior art;

FIG. 3 is a schematic structural view of the bracket according to the present embodiment;

FIG. 4 is a schematic structural view of the wheel cover according to the present embodiment;

FIG. 5 is a schematic structural diagram of the edge cover according to the present embodiment;

FIG. 6 is a side view of the construction of the extended life caster of the present embodiment;

fig. 7 is a schematic structural view of the caster with an extended life according to the present embodiment.

Description of reference numerals:

1. a support;

11. a wheel axle;

2. a wheel cover;

21. a first fastener;

3. a side cover;

31. a second fastener;

4. and (5) inserting a screw into a pin.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 3 to 7, the present embodiment provides a caster with a prolonged service life, which includes a bracket 1, a wheel cover 2 and a side cover 3. The support 1 is of a single-arm structure, and a wheel shaft 11 is arranged at the bottom of the support 1. The hub 11 is connected to a hole in the centre of the wheel cover, and the wheel cover 2 is arranged to rotate on the hub 11. The side wall outside the wheel cover central hole is provided with a first fastening piece 21, and the side wall of the side cover 3 is provided with a second fastening piece 31. The engagement of the first fastener 21 and the second fastener 31 allows the edge cover 3 to cover the side of the wheel cover 2 opposite the single-armed structure. This technical scheme sets up the fixed position of limit lid and wheel cap on the outer lateral wall of the hole of wheel cap and wheel hub connection, is tight fit and zero clearance between the limit lid of this fixed position and the wheel cap, can not take place the friction between limit lid and the wheel cap when rotating, can not produce the noise on the one hand, and on the other hand does not have lubricating oil and flows out, and avoids the limit lid to receive frictional force and wearing and tearing, the life of extension truckle.

Referring to fig. 4 and 5, in the present embodiment, the first fastening member 21 and the second fastening member 31 may be a fixing manner of a groove and a pin, for example, when the first fastening member 21 is a groove, the second fastening member 31 is a pin; if the first fastening member 21 is a pin, the second fastening member 31 is a groove. The first fastening piece 21 is taken as a groove and the second fastening piece 31 is taken as a pin shaft for example, the side wall outside the center hole of the wheel cover is provided with the groove, the section of the groove is other figures such as a circle, a square, a triangle and the like, a diamond and the like, the side of the side cover to be covered with the wheel cover is provided with the pin shaft, and the size of the pin shaft is matched with the groove. When the side cover is covered on the wheel cover, the side cover and the wheel cover can be fixed simply, conveniently and quickly by inserting the pin shaft into the groove on the wheel cover in an aligning way.

Or, the first fastener and the second fastener may be fixed by a positioning hole and a positioning block, for example, the first fastener is the positioning hole, and the second fastener is the positioning block; if the first fastener is a positioning block, the second fastener is a positioning hole. The first fastening member is taken as a positioning hole, and the second fastening member is taken as a positioning block. The positioning holes are in a hole shape, such as a circle, a square, a triangle, a rhombus and other figures. The size of the positioning block is matched with the positioning hole, and the size of the positioning block can just penetrate through the positioning hole. The end part of the positioning block is provided with a plurality of protrusions which are outward along the body, when the end part of the positioning block penetrates through the positioning hole, the protrusions on the positioning block can buckle the end part of the positioning hole, and the positioning block are tightly attached and fixed.

Or the wheel cover and the side cover can be fixed in a manner similar to the screwing of a bottle cap into a bottle mouth. If the first fastening piece is a circle of circular groove, the inner wall of the circular groove is provided with threads (internal threads); the second fastening member is also a circular groove with a thread (external thread) on the outer wall. Simultaneously the chi of the circular recess on the second fastener just can screw in the circular recess on the first fastener, so alright fix the limit cover on the wheel cap through the cooperation of external screw thread and internal thread to tightly laminate with the wheel cap. Similarly, the first fastening member may be a circular groove with an external thread, the second fastening member may be a circular groove with an internal thread, and the circular groove of the second fastening member may be sized to snugly receive the circular groove of the first fastening member.

Or, the wheel cover and the side cover can be fixed by bolts and threaded holes. Specifically, the outer wall of the center hole in the wheel cover is provided with a threaded hole, the side wall of the side cover is provided with a threaded hole, the threaded hole in the side cover is a through hole, the threaded hole in the side cover is aligned with the threaded hole in the wheel cover, and the bolt penetrates through the threaded hole to achieve fastening. In order to make the side cover more airtight, a sealing ring can be arranged at the threaded hole.

Referring to fig. 4, in the present embodiment, in order to make the fixing between the side cover and the wheel cover more tight. The first fastening member 21 is plural, the second fastening member 31 is plural, and 1 first fastening member corresponds to 1 second fastening member. The edge cover can be firmly covered on the wheel cover through the matching of the plurality of first fastening pieces 21 and the second fastening pieces 31.

Referring to fig. 4, further, in order to optimize the structure of the wheel cover and the side cover, a plurality of first fastening members 21 may be arranged on the side wall of the wheel cover 2 in an annular array. Similarly, a plurality of second fastening members 31 are arranged on the side wall of the side cover 3 in an annular array. The annular array is arranged to match with a hole in the center of the wheel cover or the circular shape of the wheel axle of the support, and the fastening pieces are arranged on the wheel cover or the side cover in an attractive and compact mode. Of course, the plurality of first fastening members may be disposed dispersedly on the wheel cover, and the plurality of second fastening members may be disposed dispersedly on the edge cover.

Referring to fig. 6 and 7, in the present embodiment, a screw insertion pin 4 is disposed at an upper end of the bracket 1. The lower end of the screw insertion pin 4 is fixed to the top end of the support 1 through a bolt, and the upper end of the screw insertion pin 4 is provided with threads. The screw thread of screw contact pin 4 is used for connecting external equipment, is provided with the screw hole on the external equipment, can fix the combination with the screw hole of screw contact pin precession external equipment, makes external equipment possess and slides the function.

Referring to fig. 6, in the present embodiment, the wheel cover center 2 is disposed offset from the axis of the bracket 1, so that the wheel cover 2 can be disposed at the side of the axis of the bracket 1. Therefore, the wheel cover positioned on the side edge can be driven by the bracket to realize universal rotation.

In this embodiment, in order to keep the side cover from affecting the movement of the wheel cover, the diameter of the side cover is set slightly smaller than the wheel cover, so that the side cover does not contact the sliding ground when being fixed on the wheel cover.

In this embodiment, the wheel cover is generally circular in configuration with a thickness to rotate on the axle and glide over the ground. The side cover may also be round, but may also be square or any other shape as long as the side cover can cover the wheel cover and achieve tight engagement. The wheel cover and the side cover can be made of plastic, alloy (zinc alloy and aluminum alloy), polyethylene, polypropylene, polyurethane and the like with similar characteristics.

In this embodiment, in order to optimize the structure and save the cost, set up the wheel lid into hollow out construction. The wheel cover is provided with a hole at the center of the wheel cover, a first fastener and an outer frame of the wheel cover from the center to the outer side respectively, and the three parts are connected through a plurality of supporting blocks, so that the wheel cover is guaranteed to be normally stressed, and the hollowed-out structure can save cost and is more attractive.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims (10)

1. The caster with the service life prolonged comprises a support, a wheel cover and a side cover, wherein the support is of a single-arm structure, a wheel shaft is arranged at the bottom of the support and is connected with a hole in the center of the wheel cover, and the wheel cover is used for rotating on the wheel shaft.

2. The extended life caster of claim 1, wherein the first fastener is a groove or a pin.

3. The extended life caster of claim 1, wherein the second fastener is a groove or a pin.

4. A life extending castor according to claim 1, 2 or 3, wherein said first fastening means is a plurality and said second fastening means is a plurality, 1 first fastening means corresponding to 1 second fastening means.

5. The extended-life caster of claim 4, wherein the plurality of first fasteners are arranged in an annular array on the sidewall outside the central aperture of the wheel cover.

6. The extended-life caster of claim 4, wherein the plurality of second fasteners are arranged in an annular array on the sidewall of the rim cover.

7. The caster with the service life prolonged as claimed in claim 1, wherein the bracket is provided at an upper end thereof with a screw pin for connecting an external device.

8. The extended life caster of claim 1, wherein said side cap has a diameter slightly smaller than said wheel cap.

9. The extended life caster wheel of claim 1, wherein said wheel cover is hollow.

10. An extended life caster according to claim 1, wherein said wheel cover centre is located off-centre from the axis of said carrier.

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