CN216331211U

CN216331211U - Auxiliary wheel

Info

Publication number: CN216331211U
Application number: CN202123074568.2U
Authority: CN
Inventors: 田万植
Original assignee: Ningbo Nandou Trading Co ltd
Current assignee: Ningbo Nandou Trading Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-04-19
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to an auxiliary wheel, which comprises a hub, an auxiliary wheel cover, a wheel cover and a wheel cover, wherein the hub comprises an outer hub and an inner hub; the tire surrounds the periphery of the outer hub; the central part of the outer hub is provided with a through hole extending along the axial direction of the outer hub, the inner hub is inserted into the through hole, the outer hub and the inner hub are detachably connected through a first connecting assembly, and when the first connecting assembly releases the connection of the outer hub and the inner hub, the outer hub and the inner hub can rotate relatively. The hub is designed into the outer hub and the inner hub separately, so that when the connection state of the outer hub and the inner hub is released, the outer hub and the inner hub can rotate relatively, and when a trailer is pulled, rolling friction is generated between a tire and the ground, so that the friction force is small, and the abrasion to the tire is small.

Description

Auxiliary wheel

Technical Field

The utility model relates to the technical field of automobile parts, in particular to an auxiliary wheel.

Background

The wheels of the automobile are generally composed of a hub and a tire, and support the weight of the whole automobile, so that the automobile can run on a road, and the running performance of the automobile is greatly influenced. As shown in the chinese utility model patent publication "plastic wheel hub and aluminium wheel hub doublet wheel" with patent number CN201920916059.3 (publication number CN210026897U), including wheel hub and tire, wheel hub includes the plastic wheel hub made by plastics and the aluminium wheel hub made by aluminium, plastic wheel hub includes well ring, first side ring and first inclined plane connecting portion, well ring and first side ring pass through first inclined plane connecting portion smooth transition, well ring tip has the arc piece that a plurality of circumferences were arranged, and is adjacent have the space between the arc piece, the through-hole has been seted up to inside in space.

The above-mentioned tires have the following drawbacks: 1. although the wheel hub of the tire is designed in a split mode, the plastic wheel hub and the aluminum wheel hub cannot rotate relatively even in a state that the plastic wheel hub and the aluminum wheel hub are not connected through the stud, the connecting block of the aluminum wheel hub is embedded into the gap of the plastic wheel hub, and the matching of the connecting block and the gap plays a role in rotation stopping, so that the plastic wheel hub and the aluminum wheel hub are always an integral piece, and therefore, in some cases, such as a trailer, the plastic wheel hub and the aluminum wheel hub are locked, the tire is equivalent to sliding friction on the ground, the friction force is large, and the tire is easy to damage; 2. the shaft connecting hole of the plastic hub has the same diameter along the axial direction, and is equivalent to a straight hole, so that the shaft connecting hole can only be adapted to a shaft with one specification, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art and provides an auxiliary wheel which can rotate when a wheel hub is locked and can be conveniently pulled away and maintained after being slightly processed.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an auxiliary wheel comprises

A hub including an outer hub and an inner hub;

the tire surrounds the periphery of the outer hub;

the method is characterized in that: the central part of the outer hub is provided with a through hole extending along the axial direction of the outer hub, the inner hub is at least partially inserted into the through hole, the outer hub and the inner hub are detachably connected through a first connecting assembly, and when the first connecting assembly releases the connection of the outer hub and the inner hub, the outer hub and the inner hub can rotate relatively.

In order to connect the inner hub and the outer hub, the inner hub comprises an annular body which can be inserted in the through hole and a mounting plate which extends radially from the periphery of the first end of the annular body, and in the state that the annular body is inserted in the through hole, the mounting plate is positioned outside the through hole and is abutted against the outer hub, and the mounting plate and the outer hub are detachably connected through a first connecting assembly.

The structure is simple, and the first connecting component is a bolt and a nut which can be connected in a threaded mode.

In order to prevent the inner hub and the outer hub from generating relative axial displacement after the first connecting assembly releases the connection between the inner hub and the outer hub, it is preferable that a through hole extends from the second end of the annular body, a positioning ring is sleeved on the annular body, the positioning ring and the annular body are detachably connected through a second connecting piece, the positioning ring and the mounting plate are respectively positioned at two sides of the through hole, and the positioning ring abuts against the outer hub.

Because the first coupling assembly is removed, circumferential rotation can occur between the inner hub and the outer hub due to the clearance between the inner hub and the outer hub, but axial movement and yawing of the outer hub can occur when relative circumferential rotation occurs between the inner hub and the outer hub. And the positioning ring and the mounting plate are matched together, so that the axial movement and the deflection which can occur to the outer hub are limited.

The reason why the positioning ring and the annular body are detachably connected is that if the positioning ring and the annular body are fixedly connected and cannot be disassembled, the annular body cannot be inserted into the through hole of the outer hub, namely, the inner hub cannot be mounted on the outer hub.

The structure is simple, and the second connecting piece is a bolt which penetrates through the annular body and is in threaded connection with the positioning ring.

In order to improve the universality of the wheel, the central part of the inner hub is provided with a mounting hole for mounting a shaft, and the mounting hole is a step hole, so that shafts with different end diameters can be mounted in the mounting hole, the universality is strong, and the range of applicable vehicle types is wide.

In the above scheme, the mounting holes comprise at least two holes with gradually enlarged diameters along the axial direction of the inner hub.

Preferably, the outer hub is a plastic part and the inner hub is a metal part. The inner hub is a metal piece and is used for supporting the quality of the whole vehicle, the requirement of vehicle stress can be met, and the outer hub is a plastic piece so as to reduce the cost and the overall weight of the vehicle and be beneficial to driving.

Preferably, the tyre is a rubber member integrally formed on the outer hub. The torsion resistance of the tire is improved, the grip performance is good (the tire does not fall off the ground), and the tire is friction-resistant.

Preferably, the outer circumferential wall of the tire is provided with at least two convex portions for limiting the speed at intervals in the circumferential direction, each of the convex portions extending in the thickness direction of the tire. If the wheel is rotating too fast, the tire may vibrate due to the design of the lugs, alerting the user that this is an auxiliary wheel (such as a wheel used for maintenance or a spare tire), a non-driving wheel.

Compared with the prior art, the utility model has the advantages that: the hub is designed into the outer hub and the inner hub in a split mode, and when the connection state of the outer hub and the inner hub is released, the outer hub and the inner hub can rotate relatively, so that when the hub is locked on a trailer, rolling friction is generated between a tire and the ground, the friction force is small, the abrasion on the tire is small, the structure is simple, and the operation and the treatment are easy.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 1;

FIG. 5 is a schematic structural view of example 2 of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 in another direction;

FIG. 7 is an exploded view of FIG. 5;

fig. 8 is a cross-sectional view of fig. 5.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Example 1

As shown in fig. 1 to 4, the auxiliary wheel of the present preferred embodiment includes a hub including an outer hub 2 and an inner hub 3, and a tire 1 provided around the outer hub 2.

The outer hub 2 is provided at a central portion thereof with a through hole 21 extending in an axial direction thereof, the inner hub 3 includes an annular body 31 insertable into the through hole 21 and a mounting plate 32 extending radially from a first end periphery of the annular body 31, the mounting plate 32 is located outside the through hole 21 and abuts against the outer hub 2 in a state where the annular body 31 is inserted into the through hole 21, and the mounting plate 32 and the outer hub 2 are detachably connected by a first connecting member. When the first coupling member is disconnected from the outer hub 2 and the inner hub 3, the outer hub 2 and the inner hub 3 can rotate relative to each other when the first coupling member is removed.

In this embodiment, first connecting elements is for the bolt and the nut that can threaded connection, and is comparatively common in simple structure and the life, the low price. The mounting plate 32 is provided with a first mounting hole 321, the wall surface of the outer hub 2 facing the mounting plate 32 is provided with a second mounting hole 22, a bolt passes through the first connecting hole 321 and the second connecting hole 22, and then a nut is screwed at the end of the screw rod, thereby connecting the mounting plate 32 and the outer hub 2 together.

A through hole 21 extends from a second end of the annular body 31, a positioning ring 4 is sleeved on the annular body 31, the positioning ring 4 and the annular body 31 are detachably connected through a second connecting piece, the positioning ring 4 and the mounting plate 32 are respectively positioned at two sides of the through hole 21, and the positioning ring 4 is abutted to the outer hub 2. In this embodiment, the second connecting member is a bolt.

The annular body 31 is provided with a third mounting hole 33, and the positioning ring 4 is provided with a fourth mounting hole 41, wherein the fourth mounting hole 41 is a threaded hole, and a bolt passes through the third mounting hole 33 and then is in threaded connection with the fourth mounting hole 41 to connect the inner hub 3 and the positioning ring 4 together.

The outer hub 2 and the inner hub 3 are connected by a first connecting assembly, and the cage 4 is connected to the inner hub 3 by a second connecting assembly. When the first coupling assembly is removed, the second coupling allows the cage 4 to be coupled to the annular body 31 so that both circumferential rotation between the inner hub 3 and the outer hub 2 is possible, but yaw and relative axial movement are not likely to occur.

In the embodiment, the outer hub 2 is a plastic member, and the inner hub 3 is a metal member such as an iron member. Interior hub 3 is the metalwork for support the quality of whole car, can satisfy the requirement of vehicle atress, and outer hub 2 is the working of plastics to reduce cost and the whole weight that alleviates the vehicle are favorable to the driving. The tire 1 is a rubber member integrally formed on the outer hub 2, and can improve the torsion resistance of the tire 1, and the grip performance is good (without deviating from the ground) and friction resistance.

Preferably, the outer circumferential wall of the tire 1 is provided with at least two protrusions 11 at intervals in the circumferential direction, and each protrusion 11 extends in the thickness direction of the tire 1. The protrusion 11 is designed to limit the wheel speed, because the protrusion 11 vibrates if the wheel speed is high, and reminds the user that the wheel is an auxiliary wheel (such as a spare tire or a wheel used in maintenance), a non-driving wheel.

A mounting hole 34 for mounting a shaft is formed in a central portion of the inner hub 3, and in the present embodiment, the annular body 31 of the inner hub 3 has an annular shape, so that a space surrounded by the annular body 31 is the mounting hole 34, and a wheel shaft is mounted in the mounting hole 34.

Example 2

Example 2 differs from example 1 in that:

as shown in fig. 5 to 8, the mounting holes 34 of embodiment 1 are straight holes having the same diameter, the mounting holes 34 of this embodiment are stepped holes, the mounting holes 34 include at least two holes having gradually larger diameters along the axial direction of the inner hub 3, and in this embodiment, the mounting holes 34 include two holes having different diameters, one being a large hole 341 and the other being a small hole 342. The advantage that mounting hole 34 design is the step hole lies in supplying the axle that the tip diameter is different to install in mounting hole 34, and the commonality is strong, and the scope of being suitable for the motorcycle type is wide.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity.

Claims

1. An auxiliary wheel comprises

A hub comprising an outer hub (2) and an inner hub (3);

a tire (1) that surrounds the outer periphery of the outer hub (2);

the method is characterized in that: the central part of the outer hub (2) is provided with a through hole (21) extending along the axial direction of the outer hub, the inner hub (3) is at least partially inserted into the through hole (21), the outer hub (2) and the inner hub (3) are detachably connected through a first connecting assembly, and when the first connecting assembly releases the connection of the outer hub (2) and the inner hub (3), the outer hub (2) and the inner hub (3) can rotate relatively.

2. An auxiliary wheel according to claim 1, wherein: the inner hub (3) comprises an annular body (31) capable of being inserted into the through hole (21) and a mounting plate (32) extending radially from the periphery of the first end of the annular body (31), the mounting plate (32) is located on the outer side of the through hole (21) and abuts against the outer hub (2) in the state that the annular body (31) is inserted into the through hole (21), and the mounting plate (32) and the outer hub (2) are detachably connected through a first connecting assembly.

3. An auxiliary wheel according to claim 2, wherein: the first connecting component is a bolt and a nut which can be connected in a threaded mode.

4. An auxiliary wheel according to claim 2, wherein: the second end of the annular body (31) extends out of the through hole (21), a positioning ring (4) is sleeved on the annular body (31), the positioning ring (4) and the annular body (31) are detachably connected through a second connecting piece, the positioning ring (4) and the mounting plate (32) are respectively located on two sides of the through hole (21), and the positioning ring (4) abuts against the outer hub (2).

5. An auxiliary wheel according to claim 4, wherein: the second connecting piece is a bolt which penetrates through the annular body (31) and is in threaded connection with the positioning ring (4).

6. An auxiliary wheel according to any of claims 1 to 5, wherein: the center of the inner hub (3) is provided with a mounting hole (34) for mounting a shaft, and the mounting hole (34) is a stepped hole, so that shafts with different diameters at the end parts can be mounted in the mounting hole (34).

7. An auxiliary wheel according to claim 6, wherein: the mounting holes (34) comprise at least two holes with gradually enlarged diameters along the axial direction of the inner hub (3).

8. An auxiliary wheel according to any of claims 1 to 5, wherein: the outer hub (2) is a plastic piece, and the inner hub (3) is a metal piece.

9. An auxiliary wheel according to any of claims 1 to 5, wherein: the tire (1) is a rubber piece integrally formed on the outer hub (2).

10. An auxiliary wheel according to claim 9, wherein: the tire (1) is characterized in that at least two convex parts (11) for limiting the speed are arranged on the outer peripheral wall of the tire (1) at intervals along the circumferential direction, and each convex part (11) extends along the thickness direction of the tire (1).