Elastic supporting piece for preventing bearing from running out of outer ring and bearing seat structure

Abstract

The utility model discloses an elastic supporting piece for placing a bearing outer ring, the supporting piece is annular and is configured to be used for being extruded between the inner wall of a bearing chamber and the bearing outer ring, the inner wall of the supporting piece protrudes inwards to form a plurality of protruding parts used for being in contact with the bearing outer ring, and the supporting piece is provided with a rear opening. The supporting piece is provided with the opening, so that the whole bearing is more elastic, the deformation of the bearing during working can be better coped with when the bearing is prevented from moving to the outer ring, the stability is higher, and the service life is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromechanical equipment, and in particular relates to an elastic support member used for preventing an outer ring of a bearing from running away, and a bearing seat structure comprising the support member. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during movement, and ensure rotation accuracy. Bearings are usually set on bearing seats. Bearing outer ring runout refers to a situation in which the outer ring of the bearing slides in the bearing seat due to errors in bearing processing, improper assembly or poor lubrication. Bearing outer ring runout will cause the bearing to be unable to rotate and load normally, and even cause the machine equipment to stop running.

[0003] In the prior art, the bearing is generally prevented from running out of the outer ring by increasing the interference fit between the bearing and the bearing seat or by installing washers. The former increases the difficulty of assembly by increasing the interference fit, while the latter can prevent the bearing from running out of the outer ring for a certain period of time. However, the heat generated by the bearing when the tool is running will cause the washer to harden and fail.

[0004] Therefore, in view of the above technical problems, it is necessary to provide an optimized support member to solve the above problems.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide an elastic connecting piece for preventing the outer ring of a bearing from running away, which is used to improve the effect of preventing the outer ring of the bearing from running away and has a longer service life.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides an elastic support member for placing the outer ring of the bearing. The support member is annular, and the inner wall of the support member protrudes inward with multiple protrusions for contacting the outer ring of the bearing, and a rear opening is set on the support member.

[0008] In one or more embodiments of the present invention, the plurality of protrusions are arranged equidistant from each other.

[0009] In one or more embodiments of the present invention, the top of the protrusion is arc-shaped.

[0010] In one or more embodiments of the present invention, the heights of the plurality of protrusions are the same.

[0011] In one or more embodiments of the present invention, a groove is formed on the outer wall of the support member at a position corresponding to each protrusion along the radial direction of the support member.

[0012] In one or more embodiments of the present invention, arc-shaped contact portions are formed at both ends of the groove notch.

[0013] In one or more embodiments of the present invention, the support member has a bilaterally symmetrical structure, and its axis of symmetry is a straight line connecting the center position of the opening and the center of the support member.

[0014] In one or more embodiments of the present invention, the support member is made of spring steel.

[0015] The utility model also provides a bearing seat structure, including a shell and the support member as described above, the shell includes a bearing chamber for accommodating the bearing, and an annular groove for accommodating the support member, the annular groove is radially recessed on the inner circumferential wall of the bearing chamber.

[0016] In one or more embodiments of the present invention, the inner wall of the annular groove is provided with a protrusion that can extend into the inner wall of the support member through the opening, and gaps are formed between both ends of the opening and the protrusion.

[0017] Compared with the prior art, the support member in the utility model is provided with an opening, which is more flexible as a whole, can better cope with the deformation of the bearing during operation while preventing the bearing from running off the outer ring, has higher stability and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of a support member in an embodiment of the utility model;

[0020] Figure 2 An axial cross-sectional view of a bearing seat structure in an embodiment of the utility model;

[0021] Figure 3 It is a radial cross-sectional view of the bearing seat structure in one embodiment of the utility model.

[0022] Description of main reference numerals:

[0023] 1-support member, 11-protrusion, 12-opening, 13-groove, 14-contact portion, 2-housing, 21-bearing chamber, 22-annular groove, 23-bump, 3-bearing, A-gap. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] In order to prevent the outer ring of the bearing from running, the bearing and the bearing seat are usually installed with interference fit, or a gasket is added to the bearing chamber of the bearing seat. The former is difficult to assemble and not easy to disassemble and maintain later, while the latter has poor adaptability. Different sizes of bearing chambers require different gaskets for adaptation, which has poor flexibility.

[0026] To this end, an embodiment of the utility model provides a support member 1, which can be adapted to bearing chambers of different sizes, has high flexibility, and can produce a certain deformation to avoid hardening and failure after long-term use, so as to increase the service life. Specifically, the support member 1 is an elastic ring that can produce deformation, which is squeezed between the inner wall of the bearing chamber and the outer ring of the bearing in the working state, and the inner wall of the support member 1 radially protrudes inward with a plurality of protrusions 11 for contacting the outer ring of the bearing, and the support member 1 has an opening 12.

[0027] With the support member 1 provided as above, in the working state, after the bearing is fixed to the bearing chamber, its outer ring is directly in contact with the protrusion 11, and the protrusion 11 is used to hold and support the outer ring of the bearing to prevent the bearing from running off the outer ring. In addition, in order to fit completely to the bearing chamber, the outer wall diameter of the support member 1 is usually larger than the inner diameter of the bearing chamber. And because there is an opening 12 in the support member 1, the support member 1 can be squeezed to deform it and then placed in the bearing chamber, which is convenient for the staff to operate, and can be adapted to bearing chambers of different sizes, with high flexibility. After being placed in the bearing chamber, the support member 1 recovers its deformation and is squeezed on the inner wall of the bearing chamber.

[0028] In one embodiment, the protrusions 11 are equidistantly arranged on the inner wall of the support member 1 to balance the supported positions on the bearing, ensuring that the bearing receives the same support effect when it tends to move or deform in different directions.

[0029] Preferably, the top of each protrusion 11 is configured to be arc-shaped to improve the contact effect and prevent the bearing from running off the outer ring, and to prevent the contact position from being sharp and causing damage to the surface of the bearing outer ring.

[0030] Furthermore, the protruding distances of all the protrusions 11 on the support member 1 are the same, and since the protrusions 11 are evenly distributed on the support member 1, when the bearing is squeezed to the inner wall of the support member 1, it is located at the center of the bearing chamber.

[0031] In one embodiment, the support member 1 is bilaterally symmetrical, and its axis of symmetry is the straight line between the center of the opening 12 and the center of the support member 1. The straight line between the center of the opening 12 and the center of the support member 1 divides the support member 1 into two symmetrical parts, and the overall structure is relatively regular. Therefore, the arrangement of the protrusion 11 is also bilaterally symmetrical, so that the bearing is more evenly stressed and the outer ring is not easily moved.

[0032] When the bearing experiences high-speed operation during use, the temperature will rise, the volume will increase, and the support member 1 will be squeezed outward. Therefore, preferably, in one embodiment, a groove 13 is formed on the outer wall corresponding to the position of each protrusion 11 along the radial concave of the support member 1. In the working state, a gap A is formed between the groove 13 and the inner wall of the bearing chamber. Through such a setting, the support member 1 has a certain deformation amount, and can produce regular deformation when squeezed by the bearing, and the height of the protrusion 11 is reduced. When the bearing cools and shrinks, the entire support member 1 body restores its shape and the protrusion 11 restores its height, so that the protrusion 11 can always fit the outer ring of the bearing, and the bearing is more stable in the bearing chamber. Secondly, the gap A between the groove 13 and the inner wall of the bearing chamber provides a cooling channel, which can improve the cooling effect of the support member 1 and prevent the support member 1 from overheating and aging prematurely, which affects the service life.

[0033] Preferably, the groove 13 has an arc-shaped contact portion 14 at both ends of the notch. Since the positions where the support member 1 is deformed by the bearing compression are mainly the protrusion 11 and the contact portion 14, the contact portion 14 is the position that contacts the inner wall of the bearing chamber. Therefore, similar to the top of the protrusion 11, the arc-shaped contact portion 14 can increase the contact area with the inner wall of the bearing chamber to prevent scratching the inner wall surface.

[0034] It is conceivable that, in order to ensure the deformation effect, the support member 1 is supported by spring steel. Spring steel has excellent deformation ability, can bear a certain load within a certain range, and recover without permanent deformation after the load is removed. At the same time, spring steel has excellent anti-elasticity, fatigue performance and heat resistance, etc., which can well meet the long-term operation of the bearing.

[0035] In order to cooperate with the above-mentioned support member 1, an embodiment of the utility model further provides a bearing seat structure, including a housing 2, the housing 2 is formed with a bearing chamber 21 and an annular groove 22, the annular groove 22 is used to accommodate the support member 1, and is recessed on the inner peripheral wall of the bearing chamber 21 along the radial direction of the bearing chamber 21, and the bearing chamber 21 is used to accommodate the bearing 3. Since the support member 1 is arranged in the annular groove 22, it will not be separated from the bearing chamber 21 during operation, thereby improving internal stability and safety.

[0036] A protrusion 23 is provided on the inner wall of the annular groove 22 , and the protrusion 23 can extend through the opening 12 to the inner wall of the support member 1 to limit the support member 1 and prevent it from rotating.

[0037] It can be imagined that in order to ensure the deformation effect, when the support member 1 is squeezed between the inner wall of the bearing chamber 2 and the outer ring of the bearing 3, it is necessary to ensure that the two ends of the opening 12 are not in contact with the protrusion 23, that is, there is a certain distance between the two ends or one end of the opening 12 and the protrusion 23, so that it can deform normally during operation.

[0038] In one embodiment, the protrusion 23 can be a pin, or a block can be directly formed on the inner wall of the bearing chamber 20 .

[0039] It is easy to imagine that, due to the existence of the gap between the groove 13 and the inner wall of the bearing chamber 21, a plurality of protrusions embedded in the groove 13 can be provided on the inner wall of the bearing chamber 21 or the annular groove 22 to further improve the stopping effect. It should be understood that the protrusion embedded in the groove 13 should not be too high to avoid affecting the overall deformation range of the support member 1.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An elastic support member for preventing the outer ring of a bearing from running away, characterized in that: The support member (1) is annular in shape, and a plurality of protrusions (11) protrude inwardly from the inner wall of the support member (1) for contacting the outer ring of the bearing, and an opening (12) is provided on the support member.

2. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The plurality of protrusions (11) are arranged at equal distances from each other.

3. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The top of the protruding portion (11) is in an arc shape.

4. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The heights of the plurality of protrusions (11) are the same.

5. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The support member (1) has a groove (13) formed on the outer wall at a position corresponding to each protrusion (11) along the radial direction of the support member (1).

6. The elastic support member for preventing the outer ring of a bearing from running off according to claim 5, characterized in that: Arc-shaped contact portions (14) are formed at both ends of the notch of the groove (13).

7. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The support member (1) has a bilaterally symmetrical structure, and its axis of symmetry is a straight line connecting the center position of the opening (12) and the center of the circle of the support member (1).

8. The elastic support member for preventing the outer ring of a bearing from running off according to claim 1, characterized in that: The support member (1) is made of spring steel.

9. A bearing seat structure, characterized in that: It comprises a housing (2) and a support member (1) as described in any one of claims 1 to 8, wherein the housing (2) comprises a bearing chamber (21) for accommodating a bearing (3) and an annular groove (22) for accommodating the support member (1), and the annular groove (22) is radially recessed on the inner circumferential wall of the bearing chamber (21).

10. The bearing seat structure according to claim 9, characterized in that: The inner wall of the annular groove (22) is provided with a protrusion (23) capable of extending through the opening (12) into the inner wall of the support member (1), and a gap is formed between the two ends of the opening (12) and the protrusion (23).

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