Bearing mounting structure and automobile with same

Abstract

The utility model relates to the technical field of vehicles, in particular to a bearing mounting structure and an automobile with the same. A bearing installation structure comprises a bearing seat, a bearing groove used for installing a bearing is formed in the bearing seat, and an assembly hole is formed in the wall face of the bearing groove; the pin shaft structure comprises a mounting seat, an elastic piece and a piston rod, the mounting seat is mounted in the mounting hole, a mounting hole is formed in the mounting seat, the elastic piece is contained in the mounting hole, one end of the piston rod is located outside the mounting hole and forms a limiting section, and the piston rod is arranged in the mounting hole. The other end of the elastic piece is movably accommodated in the mounting hole and abuts against the elastic piece; wherein the piston rod can respond to the extrusion of the outer ring to move in the mounting hole and compress the elastic piece along with the mounting of the bearing into the bearing groove, and the piston rod can reset under the action of the elastic piece along with the rotation of the bearing and enable the limiting section to be clamped into the notch. The assembly is simple and convenient.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a bearing mounting structure and a vehicle thereof. Background Art

[0002] Bearings are common components in the automotive field and are used in various locations where speed is required. Bearings are generally installed on bearing seats through clearance fit, but because the outer ring of the bearing is generally subject to radial friction during high-speed operation, it causes the outer ring of the bearing to rotate (commonly known as bearing running in the industry), which may cause severe wear of the bearing seat or bearing, resulting in NVH complaints, and even severe tooth breakage, posing a safety hazard.

[0003] In the existing related technologies, in order to solve the above problems, one method is to change the gap fit between the outer ring of the bearing and the bearing seat to an interference fit, that is, the outer ring of the bearing and the bearing seat have an interference fit. However, when installing this type of bearing, after the inner ring is installed, the surrounding parts may usually have radial spatial interference with the outer ring, resulting in the press being unable to press the outer ring. Another type of bearing and bearing seat still has a gap fit, which limits the outer ring by a pin, but this requires that during the installation of the shaft system, the assembly groove on the bearing and the pin are completely in the same straight line, otherwise it cannot be assembled, and it has high requirements for the assembly process. Utility Model Content

[0004] Based on this, it is necessary to provide a bearing installation structure and a vehicle thereof that can be easily assembled and has low assembly process requirements.

[0005] In order to solve the above technical problems, this application provides the following technical solutions:

[0006] A bearing installation structure, the bearing comprises an outer ring, and the outer ring is provided with a slot; the bearing installation structure comprises:

[0007] A bearing seat is provided with a bearing groove for mounting the bearing, and a mounting hole is provided on the wall surface of the bearing groove;

[0008] The pin structure comprises a mounting seat, an elastic member and a piston rod, wherein the mounting seat is mounted in the assembly hole and a mounting hole is formed on the mounting seat, the elastic member is received in the mounting hole, one end of the piston rod is located outside the mounting hole and forms a limiting section, and the other end is movably received in the mounting hole and abuts against the elastic member;

[0009] Among them, as the bearing is installed in the bearing groove, the piston rod can respond to the squeezing of the outer ring and move in the mounting hole and compress the elastic member, and as the bearing rotates, the piston rod can be reset under the action of the elastic member and cause the limit section to be stuck in the groove.

[0010] In one embodiment, a limiting step is provided on the hole wall of the mounting hole, and a matching step is provided on one end of the piston rod close to the elastic member, and the limiting step and the matching step can abut against and match with each other in a limiting manner. This arrangement can prevent the piston rod from falling off the mounting hole.

[0011] In one embodiment, the mounting hole is configured as a through hole, and the through hole has a first end and a second end opposite to each other; the pin structure further includes a plug, one end of the piston rod extends into the through hole and passes through the first end of the through hole to form the limiting section, and the other end of the piston rod is located in the through hole and abuts against the elastic member;

[0012] The plug is installed at the second end of the through hole to seal the second end of the through hole.

[0013] In one embodiment, the maximum compression amount of the elastic member is M; along the axial direction of the piston rod, the length of the limiting section is L1, and L1≤M.

[0014] It is understandable that the length of the limit section and the maximum compression of the elastic member are key factors in determining the movement distance of the piston rod. By making L1 satisfy the relationship of L1≤M, it is possible to avoid the elastic member being crushed and unable to reset normally. That is, by such a setting, it is possible to effectively ensure that the limit section can perform normal telescopic movement.

[0015] In one embodiment, the length of the limiting section is L1, 3mm≤L1≤5mm.

[0016] In one of the embodiments, a portion of the mounting seat protrudes out of the assembly hole and forms a protruding section, and the limiting section passes through the protruding section to be accommodated in the bearing groove.

[0017] It is understandable that by making a part of the mounting seat protrude from the assembly hole to form a protruding section, the limiting section extends from the protruding section to the bearing groove. In this way, the limiting section will abut against the protruding section and form a contact point, thereby shortening the force arm on the limiting section. When the force arm is shortened, the bending of the limiting section due to the action of the force can be reduced during the force application process of the limiting section, thereby avoiding failure of the limiting effect of the limiting section.

[0018] In one embodiment, the bearing mounting structure further comprises:

[0019] A gasket is assembled in the bearing groove and is used to abut against the bearing; wherein an avoidance groove is opened at the edge of the gasket, and the avoidance groove is arranged corresponding to the protruding section.

[0020] It is understandable that the main function of the gasket is to compensate for the tolerance when the bearing is installed. By providing the avoidance groove, the position of the protruding section can be avoided, and the circumferential limit of the gasket can also be achieved.

[0021] In one embodiment, the length of the protruding section is L2, the thickness of the gasket is H, and H≥L2.

[0022] It can be understood that by making H and L2 satisfy the relationship H≥L2, that is, the length of the protruding section is less than or equal to the thickness of the gasket, it is possible to avoid the protruding section being too large to affect the installation of the bearing itself.

[0023] In one of the embodiments, a guide surface is provided on the outer peripheral wall of the mounting seat.

[0024] It can be understood that the provision of the guide surface can guide the movement of the mounting seat when the mounting seat is installed in the assembly hole, thereby facilitating faster assembly of the mounting seat.

[0025] This application also provides the following technical solutions:

[0026] An automobile comprises a bearing and the bearing mounting structure described in any one of the above embodiments, wherein the bearing is mounted on the bearing mounting structure.

[0027] Compared with the prior art, the bearing mounting structure is provided with an elastic member and a piston rod, so that under the action of the elastic member, when the bearing is installed in the bearing groove, the piston rod is squeezed by the bearing, thereby compressing the elastic member to make the piston rod retract into the mounting hole. After the bearing rotates, the outer ring of the bearing rotates relatively. When the missing groove corresponds to the piston rod, the elastic member loses the squeezing force and resets, thereby prompting the limiting section on the piston rod to extend into the missing groove, so that the outer ring of the bearing is limited to prevent it from continuing to rotate in the circumferential direction, thus solving the problem of the outer ring running in circles. At the same time, due to the provision of the elastic member, when the bearing clearance is assembled, there is no special requirement for the positioning between the missing groove and the piston rod. It is only necessary to install the bearing in the assembly groove, and the positioning of the outer ring can be carried out and completed in the subsequent movement process, so that the assembly requirements are lower and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of the bearing provided in this application.

[0030] Figure 2 This is a cross-sectional view of the bearing provided in this application after being installed in the bearing mounting structure.

[0031] Figure 3 Provided for this application Figure 2 A partial enlarged view of position A in the middle.

[0032] Figure 4 Provided for this application Figure 3 A structural diagram with L1, L2 and M marked in FIG.

[0033] Figure 5 An exploded view of the bearing mounting structure provided for this application.

[0034] The reference numerals of the components are as follows:

[0035] 100. bearing installation structure; 10. bearing seat; 11. bearing groove; 12. assembly hole;

[0036] 20. Pin structure; 21. Mounting seat; 211. Mounting hole; 211a. First end; 211b. Second end; 212. Position-limiting step; 213. Protruding section; 214. Guide surface; 22. Elastic member; 23. Piston rod; 231. Position-limiting section; 232. Matching step; 24. Plug;

[0037] 30. Gasket; 31. Avoidance groove;

[0038] 200, bearing; 201, inner ring; 202, outer ring; 203, missing groove;

[0039] 300. Axis system. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0045] like Figures 1 to 5 As shown, the present application provides a bearing installation structure 100, which is used to install and limit a bearing 200. Here, the types of bearings 200 are roughly divided into tapered bearings, ball bearings, and roller bearings. In this embodiment, taking a roller bearing as an example, the working process and principle of the bearing installation structure 100 are specifically described.

[0046] In one embodiment, reference Figure 1The bearing 200 generally includes an inner ring 201, an outer ring 202, and a roller (not shown) and other structures. The inner ring 201 is generally sleeved on the shaft system 300, and the shaft system 300 is connected to the power source. The outer ring 202 is sleeved on the inner ring 201, and the roller is installed between the inner ring 201 and the outer ring 202. In the related art, the bearing 200 is generally installed by a clearance fit, so that no external press is required to participate in the press-fitting work. However, due to the clearance fit, the outer ring 202 is prone to running, which causes the outer ring 202 to wear, resulting in NVH (Noise, Vibration, Harshness, abbreviated as NVH) complaints or safety hazards. To this end, the bearing installation structure 100 provided in the present application solves the above technical problems.

[0047] refer to Figures 2 to 5 The bearing installation structure 100 includes a bearing seat 10 and a pin structure 20. The bearing seat 10 is provided with a bearing groove 11 for installing the bearing 200, and a mounting hole 12 is provided on the wall surface of the bearing groove 11. The pin structure 20 includes a mounting seat 21, an elastic member 22 and a piston rod 23. The mounting seat 21 is mounted in the assembly hole 12 and has a mounting hole 211. The elastic member 22 is received in the mounting hole 211. One end of the piston rod 23 is located outside the mounting hole 211 and forms a limiting section 231. The other end is movably received in the mounting hole 211 and abuts against the elastic member 22. The outer ring 202 has a notch 203. As the bearing is mounted in the bearing slot 11, the piston rod 23 can respond to the squeezing of the outer ring 202 and move in the mounting hole 211 and compress the elastic member 22. As the bearing 200 rotates, the piston rod 23 can be reset under the action of the elastic member 22 and the limiting section 231 is stuck in the notch 203. Here, when the bearing is mounted in the bearing slot 11, the piston rod 23 is squeezed by the bearing 200, thereby compressing the elastic member 22 so that the piston rod 23 retracts into the mounting hole 211. After the bearing 200 rotates, the outer ring 202 of the bearing 200 rotates relatively. When the slot 203 corresponds to the position of the piston rod 23, the elastic member 22 loses the extrusion force and resets, which then causes the limiting section 231 on the piston rod 23 to extend into the slot 203, so that the outer ring 202 of the bearing 200 is limited to prevent it from continuing to rotate in the circumferential direction, thus solving the problem of the outer ring 202 running in circles. At the same time, due to the setting of the elastic member 22, when the bearing 200 is assembled with clearance, it is not necessary to consider whether the relative position between the slot 203 and the piston rod 23 is aligned. The bearing 200 can be directly installed into the bearing groove 11, and the positioning of the outer ring 202 can be carried out and completed during the subsequent movement of the bearing 200, so the assembly requirements for the bearing 200 are lower and more convenient.

[0048] In one embodiment, reference Figure 3A limiting step 212 is provided on the hole wall of the mounting hole 211, and a matching step 232 is provided on one end of the piston rod 23 close to the elastic member 22, and the limiting step 212 and the matching step 232 can abut against and limit the matching. Such a configuration can prevent the piston rod 23 from being separated from the mounting hole 211.

[0049] For further information, please refer to Figure 3 The mounting hole 211 is configured as a through hole, and the through hole has a first end 211a and a second end 211b opposite to each other; the pin structure 20 also includes a plug 24, one end of the piston rod 23 extends into the through hole and passes through the first end 211a of the through hole to form a limiting section 231, and the other end of the piston rod 23 is located in the through hole and abuts against the elastic member 22; the plug 24 is installed at the second end 211b of the through hole and blocks the second end 211b of the through hole.

[0050] like Figure 3 As shown, a portion of the mounting seat 21 protrudes from the assembly hole 12 to form a protruding section 213, and the limiting section 231 passes through the protruding section 213 to be accommodated in the bearing groove 11. The limiting section 231 extends from the protruding section 213 to the bearing groove 11. In this way, the limiting section 231 will abut against the protruding section 213 and form a corresponding abutment point, which can shorten the force arm of the force applied to the limiting section 231. When the force arm is shortened, the bending of the limiting section 231 due to the force applied during the force application process of the limiting section 231 can be reduced, thereby avoiding the failure of the limiting effect of the limiting section 231.

[0051] Furthermore, the mounting seat 21 is embedded in the assembly hole 12 by interference fit, thereby preventing the mounting seat 21 from shaking in the assembly hole 12, causing the piston rod 23 to shake and fail. Of course, the mounting seat 21 may also be installed in other ways, which will not be described in detail here.

[0052] refer to Figure 3 To facilitate the installation of the mounting seat 21, a guide surface 214 is provided on the outer peripheral wall of one end of the mounting seat 21. Thus, when the mounting seat 21 is inserted into the assembly hole 12, the guide surface 214 can be used to guide its movement, thereby facilitating the mounting seat 21 to be quickly inserted into the assembly hole 12 and assembled.

[0053] Of course, a bell mouth or a reamer may also be provided at the entrance of the assembly hole 12, so that under the dual effects of the guide surface 214 and the bell mouth or the reamer, the installation of the mounting seat 21 can be further achieved.

[0054] In one embodiment, the elastic member 22 may be a spring, a rubber block or other specific elastic and resetting components. In this embodiment, the elastic member 22 is configured as a spring.

[0055] As a preference, reference Figure 4, the maximum compression of the elastic member 22 is M; along the axial direction of the piston rod 23, the length of the limit section 231 is L1, and L1≤M. It should be noted that the length of the limit section 231 and the maximum compression of the elastic member 22 are key factors in determining the movement distance of the piston rod 23. By making L1 satisfy the relationship of L1≤M, it can be avoided that the elastic member 22 is crushed and cannot be reset normally. That is, by such a setting, it can effectively ensure that the limit section 231 can perform normal telescopic movement.

[0056] In one embodiment, the range of the length L1 of the limiting section 231 is set to: 3mm≤L1≤5mm. Here, the length L1 of the limiting section 231 cannot be set too large, because due to the size setting of the internal elastic member 22, it is easy to cause the elastic member to be crushed if it is too long. At the same time, the length L1 of the limiting section 231 cannot be too short, because the matching stability between the limiting section 231 and the notch 203 needs to be considered. Therefore, setting the range of L1 to: 3mm≤L1≤5mm can not only avoid damage to the elastic member 22, but also have sufficient matching length to match the notch 203 for limiting, so that the limiting stability is better.

[0057] Preferably, the value of L1 may be 3 mm, 4 mm, 5 mm, etc. Of course, within the range of L1, the value of L1 may also be selected and set according to actual conditions.

[0058] In one embodiment, the bearing installation structure 100 further includes a gasket 30, which is assembled in the bearing groove 11 and is used to abut against the bearing 200; wherein, a relief groove 31 is provided at the edge of the gasket 30, and the relief groove 31 is provided corresponding to the protruding section 213. It can be understood that the function of the gasket 30 is mainly to compensate for the tolerance when the bearing 200 is installed. By providing the relief groove 31, the position of the protruding section 213 can be avoided, and the circumferential limit of the gasket 30 can also be achieved.

[0059] As a preference, reference Figure 4 , the thickness of the gasket 30 is H, the length of the protruding section 213 is L2, and H and L2 satisfy the following relationship: H≥L2. In other words, the length of the protruding section 213 is less than or equal to the thickness of the gasket 30, so as to avoid the protruding section 213 being too large and affecting the installation of the bearing 200 itself.

[0060] Combine the following Figures 1 to 5 , the working principle of the bearing mounting structure 100 is described:

[0061] First, the pin structure 20 is installed in the assembly hole 12. Secondly, the avoidance groove 31 of the gasket 30 is aligned with the protruding section 213 and placed in the bearing groove 11. Then, the bearing 200 is installed in the bearing groove 11 on the bearing seat 10. At this time, under the action of the outer ring 202, the piston rod 23 is squeezed, thereby compressing the elastic member 22, so that the piston rod 23 is retracted as a whole.

[0062] After the bearing 200 is installed, a power source (such as a motor) drives the shaft system 300 to move, so that the rollers in the bearing 200 roll over the outer ring 202, causing the outer ring 202 to rotate relatively. When the groove 203 rotates to coincide with the position of the piston rod 23, the piston rod 23 is reset and popped out by the elastic member 22 and is stuck into the groove 203. At this point, the outer ring 202 is completely restricted from rotating, and the problem of the bearing 200 running away from the outer ring 202 is solved.

[0063] The present application also provides an automobile, which includes a bearing 200 and the bearing mounting structure 100 in any of the above embodiments, and the bearing 200 is mounted on the bearing mounting structure 100 .

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A bearing mounting structure, characterized in that: The bearing comprises an outer ring and a slot is formed on the outer ring; the bearing mounting structure comprises: A bearing seat is provided with a bearing groove for mounting the bearing, and a mounting hole is provided on the wall surface of the bearing groove; The pin structure comprises a mounting seat, an elastic member and a piston rod, wherein the mounting seat is mounted in the assembly hole and a mounting hole is formed on the mounting seat, the elastic member is received in the mounting hole, one end of the piston rod is located outside the mounting hole and forms a limiting section, and the other end is movably received in the mounting hole and abuts against the elastic member; Among them, as the bearing is installed in the bearing groove, the piston rod can respond to the squeezing of the outer ring and move in the mounting hole and compress the elastic member, and as the bearing rotates, the piston rod can be reset under the action of the elastic member and cause the limit section to be stuck in the groove.

2. The bearing mounting structure according to claim 1, characterized in that: A limiting step is arranged on the hole wall of the mounting hole, and a matching step is arranged on one end of the piston rod close to the elastic member, and the limiting step and the matching step can abut against and match with each other in a limiting manner.

3. The bearing mounting structure according to claim 1, characterized in that: The mounting hole is configured as a through hole, and the through hole has a first end and a second end opposite to each other; the pin structure also includes a plug, one end of the piston rod extends into the through hole and passes through the first end of the through hole to form the limiting section, and the other end of the piston rod is located in the through hole and abuts against the elastic member; The plug is installed at the second end of the through hole to seal the second end of the through hole.

4. The bearing mounting structure according to claim 1, characterized in that: The maximum compression amount of the elastic member is M; along the axial direction of the piston rod, the length of the limiting section is L1, and L1≤M.

5. The bearing mounting structure according to claim 1 or 4, characterized in that: The length of the limiting section is L1, 3mm≤L1≤5mm.

6. The bearing mounting structure according to claim 1, characterized in that: The mounting seat protrudes out of the assembly hole to form a protruding section, and the limiting section passes through the protruding section to be accommodated in the bearing groove.

7. The bearing mounting structure according to claim 6, characterized in that: The bearing mounting structure further comprises: A gasket, assembled in the bearing groove, used to abut against the bearing; Wherein, an avoidance groove is provided at the edge of the gasket, and the avoidance groove is arranged corresponding to the protruding section.

8. The bearing mounting structure according to claim 7, characterized in that: The length of the protruding section is L2, the thickness of the gasket is H, and H≥L2.

9. The bearing mounting structure according to claim 1, characterized in that: A guide surface is arranged on the outer peripheral wall of the mounting seat.

10. An automobile, characterized in that: It comprises a bearing and the bearing mounting structure according to any one of claims 1 to 9, wherein the bearing is mounted on the bearing mounting structure.

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