Outer bearing fixing tool of hub unit assembly

Abstract

The utility model discloses an outer bearing fixing tool of a hub unit assembly, which relates to the technical field of hub assembly and is used for being mounted on one side, close to an outer bearing, of a hub so as to limit movement of the outer bearing when a knuckle is mounted in the outer bearing. The outer bearing fixing tool comprises a fixing piece of a stepped shaft-shaped structure, a through hole is formed in the fixing piece, the fixing piece is detachably fixed to the side, where the outer bearing is installed, of the hub, and the fixing piece abuts against the outer bearing to limit axial movement of the outer bearing. By means of the arrangement, for the hub assembly which has an assembly fault and is restored, the fixing piece is fixedly installed on the side, provided with the outer bearing, of the hub, the fixing piece can tightly abut against the outer bearing of the hub at the moment, the steering knuckle is pushed into the hub assembly at the moment, namely the steering knuckle penetrates through the outer bearing, and the hub assembly is fixed. The outer bearing cannot move axially due to the fact that the outer bearing is jacked by the fixing piece, and the fixing piece can be taken down after the steering knuckle is assembled smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of hub assembly, and particularly relates to an outer bearing fixing tooling for a hub unit assembly. Background Art

[0002] At present, for the circlips produced in China for use on maintenance-free hub assemblies, there are many unqualified phenomena in the clamping force. When the hub assembly is assembled onto the steering knuckle, if the clamping force of the circlip is insufficient, it will cause the outer bearing of the hub to move axially, and the circlip will also come out of the circlip groove, thus unable to complete the assembly. When encountering this situation, the assembler needs to remove the hub assembly from the steering knuckle, take out the circlip, reset the inner bearing, then reinstall the circlip into the circlip grooves of the inner and outer bearings, and restore the hub assembly to reassemble. When encountering this situation, the probability of the recurrence of the assembly failure of the hub unit is very high, and it extremely consumes working hours.

[0003] Among them, the hub is a cylindrical metal part that supports the tire inside the tire profile and is centered on the shaft. The hub assembly mentioned in this article includes assembled parts such as the hub, bearing, and circlip; the steering knuckle, also known as the "sheep's horn", is one of the important parts in the automotive steering axle, which can make the vehicle drive stably and transmit the driving direction sensitively. In this article, it serves as a shaft for the hub to be pushed in for assembly; the circlip belongs to a kind of fastener, which is installed in the shaft groove or hole groove of the machine or equipment, and plays a role in preventing the parts on the shaft or in the hole from moving axially. In this article, its function is to clamp the inner and outer bearings of the hub on the hub, so that the outer bearing will not move axially during assembly, resulting in improper assembly.

[0004] Therefore, how to avoid the insufficient clamping force of the circlip, which causes the outer bearing to move axially when installing the steering knuckle into the hub, is a technical problem that needs to be solved by those skilled in the art at present. Content of the Utility Model

[0005] The purpose of the utility model is to provide an outer bearing fixing tooling for a hub unit assembly, which can avoid the insufficient clamping force of the circlip, resulting in the axial movement of the outer bearing when installing the steering knuckle into the hub.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An outer bearing fixing tooling for a hub unit assembly, which is used to be installed on one side of the hub close to the outer bearing to limit the movement of the outer bearing when installing the steering knuckle into the outer bearing. The outer bearing fixing tooling includes: a fixing member with a stepped shaft structure having a through hole inside, the fixing member is detachably fixed on one side of the hub where the outer bearing is installed, and the fixing member abuts against the outer bearing to limit the axial movement of the outer bearing.

[0008] Preferably, the fixing member includes a first positioning surface and a second positioning surface that are perpendicular to each other. A bolt hole is provided on the first positioning surface, and the bolt hole corresponds to a threaded hole on the outer side of the hub. The fixing member is installed on the outer side of the hub through a fixing bolt.

[0009] Preferably, the fixing member further includes an abutting surface. When the fixing member is fixed by the fixing bolt, the abutting surface abuts against the inner ring of the outer bearing.

[0010] Preferably, the second positioning surface abuts against a stepped surface on the outer side of the hub, and the second positioning surface is used to position the installation position of the fixing member.

[0011] Preferably, the fixing member further includes a relief step provided on the outer side of the abutting surface. When the abutting surface abuts against the inner ring of the outer bearing, a gap is left between the relief step and the outer bearing.

[0012] Preferably, the second positioning surface and the stepped surface on the outer side of the hub are in clearance fit.

[0013] Preferably, the inner diameter of the abutting surface is larger than the inner diameter of the inner ring of the outer bearing, and the outer diameter of the abutting surface is smaller than the outer diameter of the inner ring of the outer bearing.

[0014] Preferably, two bolt holes are provided in the vertical direction on the first positioning surface.

[0015] Preferably, the material of the fixing member is hard plastic.

[0016] Preferably, the fixing member is integrally formed by injection molding.

[0017] Compared with the above background art, an outer bearing fixing tool for a hub unit assembly provided by the present utility model is used to be installed on one side of the hub close to the outer bearing to limit the movement of the outer bearing when installing a steering knuckle into the outer bearing. The outer bearing fixing tool includes: a fixing member having a stepped shaft structure with a through hole inside. The fixing member is detachably fixed on one side of the hub where the outer bearing is installed, and the fixing member abuts against the outer bearing to limit the axial movement of the outer bearing.

[0018] Specifically, for a hub assembly that has experienced assembly failure and has been restored, the fixing member is fixedly installed on the side of the hub where the outer bearing is installed. At this time, the fixing member will tightly abut against the outer bearing of the hub. Then, the steering knuckle is pushed into the hub assembly, that is, the steering knuckle passes through the outer bearing. Since the outer bearing is abutted by the fixing member and cannot move axially, after the assembly of the steering knuckle is successfully completed, the fixing member can be removed. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0020] Figure 1 Structural schematic diagram of the fixing part provided by the embodiment of the present invention;

[0021] Figure 2 is Figure 1 structural sectional view;

[0022] Figure 3 Structural schematic diagram of the use state of the fixing tooling provided by the embodiment of the present invention.

[0023] Wherein:

[0024] 01 - wheel hub, 02 - outer bearing, 03 - steering knuckle;

[0025] 100 - fixing part, 110 - first positioning surface, 111 - bolt hole, 112 - fixing bolt, 120 - second positioning surface, 130 - abutting surface, 140 - relief step. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] To enable those skilled in the art of this technology to better understand the solution of the present invention, the following further details the present invention in combination with the drawings and specific embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "upper", "lower", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0029] The purpose of the present invention is to provide an outer bearing fixing tooling for a wheel hub unit assembly, which can avoid the insufficient clamping force of the snap ring, resulting in the axial movement of the outer bearing when installing the steering knuckle into the wheel hub.

[0030] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0031] See also Figures 1 to 3 The present embodiment provides an outer bearing fixing tool of a wheel hub unit assembly, which is used to be installed on the side of the wheel hub 01 close to the outer bearing 02 to limit the movement of the outer bearing 02 when the steering knuckle 03 is installed in the outer bearing 02. The outer bearing 02 fixing tool includes: a fixing member 100 of a stepped shaft structure with a through hole inside, the fixing member 100 is detachably fixed to the side of the wheel hub 01 where the outer bearing 02 is installed, and the fixing member 100 abuts against the outer bearing 02 to limit the axial movement of the outer bearing 02.

[0032] Specifically, the fixing fixture in this embodiment is used when inserting the steering knuckle 03 into the wheel hub 01. The fixing fixture is a cylindrical structure. When the steering knuckle 03 needs to be inserted into the outer bearing 02 in the wheel hub 01, the fixing fixture is assembled to the side opposite to the insertion direction of the steering knuckle 03. Figure 3 As shown, in this way, when the steering knuckle 03 is inserted to the left, the outer bearing 02 tends to move to the left, but under the action of the fixing fixture, the outer bearing 02 will be firmly supported until the installation of the steering knuckle 03 is completed.

[0033] In other words, for the wheel hub 01 assembly that has had an assembly failure and has been restored, the fixing part 100 is fixedly installed on the side of the wheel hub 01 where the outer bearing 02 is installed. At this time, the fixing part 100 will tightly support the outer bearing 02 of the wheel hub 01. At this time, the steering knuckle 03 is pushed into the wheel hub 01 assembly, that is, the steering knuckle 03 passes through the outer bearing 02. The outer bearing 02 cannot move axially because it is supported by the fixing part 100. After successfully completing the assembly of the steering knuckle 03, the fixing part 100 can be removed.

[0034] Preferably, the fixing member 100 includes a first positioning surface 110 and a second positioning surface 120 which are perpendicular to each other. A bolt hole 111 is provided on the first positioning surface 110, and the bolt hole 111 corresponds to the threaded hole on the outer side of the wheel hub 01. The fixing member 100 is installed to the outer side of the wheel hub 01 by means of a fixing bolt 112.

[0035] Specific as Figure 2 As shown, in the present embodiment, the first step of the fixing member 100 includes a first positioning surface 110 and a second positioning surface 120 which are perpendicular to each other. Bolt holes 111 can be provided on the circumference of the first positioning surface 110. When the fixing member 100 is in the installed state, the first positioning surface 110 will fit the outer side surface of the wheel hub 01, and the bolt holes 111 thereon will correspond to the threaded holes on the wheel hub 01, so that the fixing bolts 112 can pass through the bolt holes 111 and the threaded holes to fix the fixing member 100.

[0036] On the basis of the above embodiments, the fixing member 100 further includes an abutting surface 130, and when the fixing member 100 is fixed by the fixing bolt 112, the abutting surface 130 abuts against the inner ring of the outer bearing 02.

[0037] Specifically, as Figure 2 shown, the abutting surface 130 is specifically the end surface of the smaller-diameter end of the fixing member 100, and the abutting surface 130 can just abut against the inner ring of the outer bearing 02 after the fixing member 100 is installed in place, so as to prevent the outer bearing 02 from moving outwards.

[0038] Preferably, the second positioning surface 120 abuts against the stepped surface on the outer side of the hub 01, and the second positioning surface 120 is used to position the installation position of the fixing member 100.

[0039] It can be understood that the setting of the second positioning surface 120 can enable the operator to complete the positioning and installation of the fixing member 100 conveniently and quickly. In this embodiment, the diameter where the second positioning surface 120 is located can just match the stepped surface on the outer side of the hub 01, so that when the fixing member 100 is in the installed state, the second positioning surface 120 abuts against the stepped surface of the hub 01.

[0040] Preferably, the fixing member 100 further includes: a relief step 140 provided on the outer side of the abutting surface 130. When the abutting surface 130 abuts against the inner ring of the outer bearing 02, there is a gap between the relief step 140 and the outer bearing 02.

[0041] In addition, in this embodiment, the fixing member 100 is specifically a three-step ladder structure, and the step at the end where the abutting surface 130 is provided is the relief step 140. That is, when the fixing member 100 is in the installed state, the existence of the relief step 140 will leave a certain space between the fixing member 100 and the outer bearing 02. Such a setting can avoid the situation where it cannot be installed in place due to the machining error of the fixing member 100, can increase the applicability of the fixing member 100, and reduce its production and manufacturing difficulty.

[0042] Preferably, the second positioning surface 120 and the stepped surface on the outer side of the hub 01 are in clearance fit.

[0043] In this embodiment, in order to facilitate the quick installation and disassembly of the fixing member 100, the second positioning surface 120 and the stepped surface on the outer side of the Copeland are in clearance fit.

[0044] Preferably, the inner diameter of the abutting surface 130 is greater than the inner diameter of the inner ring of the outer bearing 02, and the outer diameter of the abutting surface 130 is less than the outer diameter of the inner ring of the outer bearing 02.

[0045] It can be understood that such a setting can enable the fixing member 100 to stably abut against the outer bearing 02, and avoid its end abutting against the space between the outer ring and the inner ring of the outer bearing 02 and damaging the outer bearing 02.

[0046] Preferably, two bolt holes 111 are provided on the first positioning surface 110 in the vertical direction.

[0047] It can be understood that the number of bolt holes 111 on the first positioning surface 110 can be set according to the actual situation. In this embodiment, preferably, two bolt holes 111 are provided on the first positioning surface 110, and these two bolt holes 111 are located on the same straight line, which not only ensures the installation strength of the fixing member 100 but also reduces the production and manufacturing length of the fixing member 100.

[0048] Preferably, the material of the fixing member 100 is hard plastic.

[0049] In this embodiment, in order to reduce the production cost of the fixing member 100 and its lightness during use, the material of the fixing member 100 is preferably hard plastic.

[0050] Preferably, the fixing member 100 is integrally formed by injection molding.

[0051] Furthermore, the fixing member 100 is preferably integrally formed by injection molding. In this way, not only can the overall manufacturing strength of the fixing member 100 be improved, but also the production cost of the fixing member 100 can be reduced, and the production efficiency of the fixing member 100 can be increased.

[0052] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0053] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0054] The embodiments provided by the present utility model have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An external bearing fixing tooling for a hub unit assembly, which is used to be installed on one side of a hub (01) close to an external bearing (02) to limit the movement of the external bearing (02) when installing a steering knuckle (03) into the external bearing (02), and is characterized in that, The external bearing fixing tooling includes: a fixing member (100) having a stepped shaft structure with a through hole inside. The fixing member (100) is detachably fixed to one side of the hub (01) where the external bearing (02) is installed, and the fixing member (100) abuts against the external bearing (02) to limit the axial movement of the external bearing (02).

2. The outer bearing fixing tooling for the hub unit assembly according to claim 1, characterized in that, The fixing member (100) includes a first positioning surface (110) and a second positioning surface (120) that are perpendicular to each other. A bolt hole (111) is provided on the first positioning surface (110), and the bolt hole (111) corresponds to a threaded hole on the outer side of the hub (01). The fixing member (100) is installed on the outer side of the hub (01) through a fixing bolt (112).

3. The outer bearing fixing tooling for the hub unit assembly according to claim 2, characterized in that, The fixing member (100) further includes an abutting surface (130). When the fixing member (100) is fixed by the fixing bolt (112), the abutting surface (130) abuts against the inner ring of the external bearing (02).

4. The outer bearing fixing tooling for the hub unit assembly according to claim 3, characterized in that, The second positioning surface (120) abuts against a stepped surface on the outer side of the hub (01), and the second positioning surface (120) is used to position the installation position of the fixing member (100).

5. The outer bearing fixing tooling for the hub unit assembly according to claim 3, characterized in that, The fixing member (100) further includes a relief step (140) provided outside the abutting surface (130). When the abutting surface (130) abuts against the inner ring of the external bearing (02), a gap is left between the relief step (140) and the external bearing (02).

6. The outer bearing fixing tooling for the hub unit assembly according to claim 4, characterized in that, The second positioning surface (120) and the stepped surface on the outer side of the hub (01) are in clearance fit.

7. The outer bearing fixing tooling for the hub unit assembly according to claim 4, characterized in that The inner diameter of the abutting surface (130) is larger than the inner diameter of the inner ring of the external bearing (02), and the outer diameter of the abutting surface (130) is smaller than the inner diameter of the inner ring of the external bearing (02).

8. The outer bearing fixing tooling for the hub unit assembly according to claim 2, characterized in that, Two bolt holes (111) are provided vertically on the first positioning surface (110).

9. The outer bearing fixing tooling for the hub unit assembly according to claim 1, characterized in that, The material of the fixing member (100) is hard plastic.

10. The outer bearing fixing tooling for the hub unit assembly according to claim 9, characterized in that, The fixing member (100) is integrally formed by injection molding.

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