Clamp spring for bearing

Abstract

The utility model relates to the technical field of bearings, and discloses a clamp spring for a bearing, which comprises a body and convex ribs arranged on the outer walls of the two axial ends of the body, the body is provided with a plurality of heat dissipation holes and has a thickness direction, and the heat dissipation holes penetrate through the body in the thickness direction of the body. And heat generated by friction of the inner ring can be quickly discharged through the heat dissipation holes, so that the influence of the clamping spring on heat dissipation of the inner ring is reduced, the heat dissipation efficiency of the inner ring is ensured, and the service life of the bearing is further ensured. In addition, due to the arrangement of the heat dissipation holes, the weight of the clamp spring is reduced, then the weight of the bearing provided with the clamp spring is reduced, and lightweight design of the bearing is facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of bearings, and specifically relates to a retaining spring for a bearing. Background Art

[0002] Double-row tapered roller bearings are double-row roller bearings with tapered raceways, which include two inner rings arranged opposite to each other, an outer ring sleeved outside the two inner rings, and rolling elements arranged between the inner rings and the outer rings. Since double-row tapered roller bearings have two inner rings, a retaining spring needs to be arranged between the two inner rings to increase the stability of the two inner rings.

[0003] In the related art, the retaining spring includes a main body with a major arc cross section and convex ribs arranged on the outer walls of the two axial ends of the main body. The inner walls of the two inner rings close to each other are provided with annular grooves for accommodating the main body, and the groove walls of the annular grooves are provided with limiting grooves for accommodating the convex ribs. After the retaining spring is installed on the two inner rings, the main body is located in the annular grooves of the two inner rings so that the inner wall of the retaining spring does not protrude from the inner wall of the inner ring. The two convex ribs are respectively located in the limiting grooves of the two inner rings to limit the two inner rings, thereby increasing the stability of the inner rings. After the double-row tapered roller bearing is installed on the shaft, the inner ring and the shaft are in clearance, which causes friction between the inner ring and the bearing, which causes the temperature of the inner ring to rise. Since the retaining spring is located at the connection between the two inner rings, the retaining spring affects the heat dissipation of the inner ring, thereby affecting the service life of the double-row tapered roller bearing. Utility Model Content

[0004] The present application provides a retaining spring for a bearing, so as to reduce the influence of the retaining spring on the heat dissipation of an inner ring, thereby ensuring the service life of a double-row tapered roller bearing.

[0005] The technical solution adopted in this application is:

[0006] A bearing retaining spring comprises a body and convex ribs arranged on the outer walls of the two axial ends of the body, the body is provided with a plurality of heat dissipation holes, the body has a thickness direction, and the heat dissipation holes penetrate the body in the thickness direction of the body.

[0007] By adopting the above technical solution, after the retaining ring in the present application is installed in the bearing, the body is located in the annular grooves of the two inner rings, and the two convex ribs are respectively located in the limiting grooves of the two inner rings, so that the cooperation between the convex ribs and the limiting grooves limits the two inner rings, thereby increasing the stability of the inner rings. Since the body is provided with heat dissipation holes, the heat generated by the friction of the inner ring can be quickly discharged through the heat dissipation holes, so as to reduce the influence of the retaining ring on the heat dissipation of the inner ring, thereby ensuring the heat dissipation efficiency of the inner ring, and then ensuring the service life of the bearing. In addition, due to the provision of the heat dissipation holes, the weight of the retaining ring is also reduced, and then the weight of the bearing installed with the retaining ring in the present application is reduced, which is helpful for lightweight design of the bearing.

[0008] Optionally, the inner wall of the main body has side areas opposite to the convex ribs and a belly area located between the side areas, and the heat dissipation holes are arranged in the belly area.

[0009] By adopting the above technical solution, since the belly area is located between the two side areas, and the side areas are arranged opposite to the convex ribs, and the heat dissipation holes are arranged in the belly area, that is, the heat dissipation holes are located between the two convex ribs, so that the heat dissipation holes are opposite to the connection between the two inner rings, so that the heat generated by the inner rings can be quickly discharged through the heat dissipation holes, thereby further reducing the influence of the clamp spring on the heat dissipation of the two inner rings, and further ensuring the heat dissipation efficiency of the inner ring. In addition, compared with arranging the heat dissipation holes in the side areas, the influence of the heat dissipation holes on the structural strength of the clamp spring is reduced, so as to ensure the elastic deformation capacity of the clamp spring, and thus ensure the connection stability between the clamp spring and the inner ring.

[0010] Optionally, the abdominal region has a width direction parallel to the axial direction of the body and a midpoint located in the middle of the width direction of the abdominal region, and the center point of the heat dissipation hole coincides with the midpoint.

[0011] By adopting the above technical solution, since the two inner rings of the bearing are symmetrically arranged, the center point of the heat dissipation hole is arranged to coincide with the midpoint in the width direction of the belly area, that is, the heat dissipation hole is located in the middle position in the width direction of the belly area, and then the projection area of ​​the heat dissipation hole toward the two inner rings is equal, so as to ensure the same heat dissipation effect of the two inner rings as much as possible, thereby ensuring the service life of the bearing equipped with the retaining spring of the present application. At the same time, it can also reduce the difficulty of producing the heat dissipation hole, so as to improve the production efficiency of the retaining spring, thereby reducing the production cost of the retaining spring.

[0012] Optionally, the abdominal area is recessed outwardly to form a heat dissipation space between the abdominal area and the shaft.

[0013] By adopting the above technical solution, the belly area is recessed outward, so that after the bearing equipped with the retaining ring in the application is installed on the shaft, a heat dissipation space is formed between the belly area and the shaft, so as to further ensure the heat dissipation efficiency of the inner ring; at the same time, because the belly area is recessed outward, after the bearing equipped with the retaining ring in the application is installed on the shaft, the belly plate part cannot contact the shaft, so as to reduce the contact area between the bearings to a certain extent, thereby reducing the heat generation of the bearing at the root, so as to avoid the possibility of high temperature of the bearing, thereby ensuring the service life of the bearing.

[0014] Optionally, the depression depth H of the abdominal region and the thickness T of the main body satisfy: 1 / 4T≤H≤1 / 3T.

[0015] By adopting the above technical solution, if H is set to be less than 1 / 4T, the gap between the abdominal area and the shaft may be smaller, and then the heat dissipation space may be smaller, so that the heat dissipation space is less helpful or not helpful for the heat dissipation effect of the inner ring; and if H is set to be greater than 1 / 3T, it may affect the structural strength of the main body; and if H is set to be greater than or equal to 1 / 4T and less than or equal to 1 / 3T, on the one hand, the heat dissipation efficiency of the inner ring is improved to ensure the service life of the bearing equipped with the retaining spring in this application, and on the other hand, the structural strength of the retaining spring is guaranteed, thereby ensuring the limiting effect of the retaining spring on the inner ring.

[0016] Optionally, a plurality of heat dissipation holes are evenly spaced along the circumference of the body.

[0017] By adopting the above technical solution, since the multiple heat dissipation holes are evenly spaced along the circumference of the body, after the retaining ring is installed on the bearing, the multiple heat dissipation holes are evenly distributed on the circumference of the inner ring, so that the heat is evenly distributed in the circumference of the inner ring, thereby ensuring the heat dissipation efficiency of the inner ring. At the same time, the multiple heat dissipation holes are evenly spaced along the circumference of the body, which can also make the weight of the retaining ring as evenly distributed as possible in its own circumference, so as to achieve the dynamic balance of the bearing installed with the retaining ring in this application.

[0018] Optionally, the main body has a deformation notch, and the main body has an avoidance section arranged opposite to the deformation notch and heat dissipation sections located on both sides of the avoidance section along its circumference, and the heat dissipation hole is arranged in the heat dissipation section.

[0019] By adopting the above technical scheme, since it is necessary to press the two sides of the deformation notch when installing the retaining spring, stress concentration will appear at the position of the avoidance section, and the heat dissipation holes are arranged in the heat dissipation section, the structural strength of the avoidance section can be ensured to avoid the situation where the main body is bent and cannot recover due to stress concentration in the avoidance section. On the one hand, it can reduce the difficulty of assembling the retaining spring to improve the assembly efficiency of the retaining spring. On the other hand, it can reduce the situation where the retaining spring is easily damaged due to large force when installing the retaining spring, thereby reducing the assembly cost of the retaining spring.

[0020] Optionally, a diameter D of the heat dissipation hole and a distance L between two ribs satisfy: 1 / 2L≤D≤2 / 3L.

[0021] By adopting the above technical solution, if D is set to be less than 1 / 2L, it will affect the efficiency of the heat generated by the inner ring being discharged through the heat dissipation holes. If D is set to be greater than 2 / 3L, it will affect the structural strength of the main body, and then affect the deformation ability of the retaining spring, so that when the user installs the retaining spring, the retaining spring is easily damaged and cannot be deformed again. Setting D to be greater than or equal to 1 / 2L and less than or equal to 2 / 3L can, on the one hand, ensure that the heat generated by the inner ring is discharged through the heat dissipation holes, that is, ensure the heat dissipation efficiency of the inner ring. On the other hand, it can ensure the structural strength of the main body, so as to ensure the elastic deformation ability of the retaining spring, and then ensure the connection stability between the retaining spring and the inner ring.

[0022] Optionally, the distance S between two adjacent heat dissipation holes and the circumference C of the body satisfy: 1 / 10C≤S≤1 / 8C.

[0023] By adopting the above technical solution, if S is set to be less than 1 / 10C, ​​a large number of heat dissipation holes will be resulted, which will affect the structural strength of the main body, thereby affecting the deformation ability of the retaining spring, thereby affecting the connection stability between the retaining spring and the inner ring. If S is set to be greater than 1 / 8C, a small number of heat dissipation holes will be resulted, and then the heat generated by the inner ring cannot be discharged through the heat dissipation holes; and if S is set to be greater than or equal to 1 / 10C and less than or equal to 1 / 8C, on the one hand, it can ensure the efficiency of the heat generated by the inner ring being discharged through the heat dissipation holes, so as to ensure the heat dissipation efficiency of the inner ring, and on the other hand, it can reduce the effect of the heat dissipation holes on the structural strength of the main body, so as to ensure the elastic deformation ability of the retaining spring, and thus ensure the connection stability between the retaining spring and the inner ring.

[0024] Optionally, the heat dissipation hole has an air inlet located on the outer wall of the main body and an air outlet located on the inner wall of the main body, and the diameter of the air inlet is smaller than the diameter of the air outlet.

[0025] By adopting the above technical solution, since the diameter of the air outlet is larger than the diameter of the air inlet, the heat discharged through the heat dissipation holes can be quickly diffused to the surrounding sides under the action of the air outlet to avoid the concentration of heat at the air outlet, thereby reducing the pressure at the air outlet, so that the heat generated by the inner ring can be quickly discharged through the heat dissipation holes to further ensure the heat dissipation efficiency of the inner ring.

[0026] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0027] 1. The retaining spring in the present application includes a body and convex ribs arranged on the outer wall of the two axial ends of the body. The body is provided with a plurality of heat dissipation holes. The body has a thickness direction. The heat dissipation holes penetrate the body in the thickness direction of the body, so that the heat generated by the friction of the inner ring can be quickly discharged through the heat dissipation holes, so as to reduce the influence of the retaining spring on the heat dissipation of the inner ring, thereby ensuring the heat dissipation efficiency of the inner ring and further ensuring the service life of the bearing. In addition, due to the provision of the heat dissipation holes, the weight of the retaining spring is also reduced, and then the weight of the bearing installed with the retaining spring in the present application is reduced, which is helpful for lightweight design of the bearing.

[0028] 2. In the present application, the inner wall of the body has a side area opposite to the convex ribs and a belly area between the side areas, and the heat dissipation hole is arranged in the belly area, that is, the heat dissipation hole is located between the two convex ribs, so that the heat dissipation hole is opposite to the connection between the two inner rings, so that the heat generated by the inner ring can be quickly discharged through the heat dissipation hole, thereby further reducing the influence of the clip spring on the heat dissipation of the two inner rings, and further ensuring the heat dissipation efficiency of the inner ring. Moreover, compared with setting the heat dissipation hole in the side area, the influence of the heat dissipation hole on the structural strength of the clip spring is reduced, so as to ensure the elastic deformation capacity of the clip spring, and then ensure the connection stability between the clip spring and the inner ring.

[0029] 3. The belly area in the present application is recessed outward, so that after the bearing equipped with the retaining ring in the application is installed on the shaft, a heat dissipation space is formed between the belly area and the shaft, so as to further ensure the heat dissipation efficiency of the inner ring; at the same time, because the belly area is recessed outward, after the bearing equipped with the retaining ring in the present application is installed on the shaft, the belly plate part cannot contact the shaft, so as to reduce the contact area between the bearings to a certain extent, thereby reducing the heat generation of the bearing at the root, so as to avoid the possibility of high temperature of the bearing, thereby ensuring the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 This is a schematic diagram of the structure of a bearing retaining spring according to one embodiment of the present application;

[0032] Figure 2 A partial cross-sectional view of a bearing retaining spring according to an embodiment of the present application;

[0033] Figure 3 A partial cross-sectional view of a bearing retaining spring according to another embodiment of the present application;

[0034] Figure 4This is a schematic structural diagram of a bearing retaining spring according to another embodiment of the present application.

[0035] Reference numerals:

[0036] 1. Main body; 11. Side area; 12. Abdominal area; 13. Deformation notch; 14. Avoidance section; 15. Heat dissipation section; 2. Convex ribs; 3. Heat dissipation holes. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0039] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0042] Reference Figures 1 to 4 , discloses a bearing retaining spring, which includes a main body 1 and convex ribs 2 arranged on the outer walls of the main body 1 at both axial ends. The main body 1 is provided with a plurality of heat dissipation holes 3. The main body 1 has a thickness direction, and the heat dissipation holes 3 penetrate the main body 1 in the thickness direction of the main body 1.

[0043] After the retaining ring in the present application is installed in the bearing, the body 1 is located in the annular grooves of the two inner rings, and the two convex ribs 2 are respectively located in the limiting grooves of the two inner rings, so that the convex ribs 2 cooperate with the limiting grooves to limit the two inner rings, thereby increasing the stability of the inner rings. Since the body 1 is provided with heat dissipation holes 3, the heat generated by the friction of the inner ring can be quickly discharged through the heat dissipation holes 3, so as to reduce the influence of the retaining ring on the heat dissipation of the inner ring, thereby ensuring the heat dissipation efficiency of the inner ring, and then ensuring the service life of the bearing. In addition, due to the provision of the heat dissipation holes 3, the weight of the retaining ring is also reduced, and then the weight of the bearing installed with the retaining ring in the present application is reduced, which is helpful for lightweight design of the bearing.

[0044] It should be noted that the thickness direction mentioned in the present application specifically refers to the direction parallel to the thickness of the body 1 , and the thickness of the body 1 refers to the distance between the outer wall and the inner wall of the body 1 .

[0045] The present application does not specifically limit the position of the heat dissipation hole 3. Preferably, refer to Figures 1 to 3 The inner wall of the body 1 has a side area 11 opposite to the convex ribs 2 and a belly area 12 located between the side areas 11, and the heat dissipation hole 3 is arranged in the belly area 12, that is, the heat dissipation hole 3 is located between the two convex ribs 2, so that the heat dissipation hole 3 is opposite to the connection between the two inner rings, and then the heat generated by the inner ring can be quickly discharged through the heat dissipation hole 3, thereby further reducing the influence of the clip on the heat dissipation of the two inner rings, and further ensuring the heat dissipation efficiency of the inner ring. In addition, compared with setting the heat dissipation hole 3 in the side area 11, the influence of the heat dissipation hole 3 on the structural strength of the clip is reduced, so as to ensure the elastic deformation capacity of the clip, and then ensure the connection stability between the clip and the inner ring.

[0046] In a preferred embodiment, referring to Figures 1 to 3 The abdominal area 12 has a width direction parallel to the axial direction of the body 1 and a midpoint located in the middle of the width direction of the abdominal area 12, and the center point of the heat dissipation hole 3 coincides with the midpoint.

[0047] Specifically, since the two inner rings of the bearing are symmetrically arranged, the center point of the heat dissipation hole 3 is arranged to coincide with the midpoint of the width direction of the belly area 12, that is, the heat dissipation hole 3 is located in the middle position of the width direction of the belly area 12, and then the projection area of ​​the heat dissipation hole 3 toward the two inner rings is equal, so as to ensure the same heat dissipation effect of the two inner rings as much as possible, thereby ensuring the service life of the bearing installed with the retaining spring in this application. At the same time, it can also reduce the difficulty of producing the heat dissipation hole 3, so as to improve the production efficiency of the retaining spring, thereby reducing the production cost of the retaining spring.

[0048] The present application does not specifically limit the structure of the abdominal region 12, and it may adopt any one of the following embodiments:

[0049] Embodiment 1, in this embodiment, refer to Figure 2 The belly area 12 is a straight wall structure parallel to the axial direction of the body 1 to ensure that after the bearing equipped with the retaining ring in this application is installed on the shaft, the belly area 12 can contact the shaft so that the shaft supports the belly area 12, thereby ensuring the connection stability between the retaining ring and the inner ring.

[0050] Embodiment 2, in this embodiment, refer to Figure 3 The belly area 12 is recessed outward, so that after the bearing equipped with the retaining ring in the application is installed on the shaft, there is a gap between the belly area 12 and the shaft to form a heat dissipation space, so that the heat generated by the inner ring enters the heat dissipation space through the heat dissipation hole 3 and quickly dissipates in the heat dissipation space, so as to further ensure the heat dissipation efficiency of the inner ring; at the same time, because the belly area 12 is recessed outward, after the bearing equipped with the retaining ring in the application is installed on the shaft, the belly plate part cannot contact the shaft, so as to reduce the contact area between the bearings to a certain extent, thereby reducing the heat generation of the bearing at the root, so as to avoid the possibility of high temperature of the bearing, thereby ensuring the service life of the bearing.

[0051] It should be noted that the outward concave arrangement of the abdomen area 12 specifically refers to the corresponding abdomen area 12 being concave toward a side away from the center of the main body 1 .

[0052] Further, see Figure 3 , the depression depth H of the abdomen area 12 and the thickness T of the body 1 satisfy: 1 / 4T≤H≤1 / 3T.

[0053] If H is set to be less than 1 / 4T, the gap between the abdominal area 12 and the shaft may be smaller, resulting in a smaller heat dissipation space, so that the heat dissipation space is less helpful or not helpful for the heat dissipation effect of the inner ring; if H is set to be greater than 1 / 3T, the structural strength of the main body 1 may be affected; and if H is set to be greater than or equal to 1 / 4T and less than or equal to 1 / 3T, on the one hand, the heat dissipation efficiency of the inner ring is improved to ensure the service life of the bearing equipped with the retaining spring in this application, and on the other hand, the structural strength of the retaining spring is ensured, thereby ensuring the limiting effect of the retaining spring on the inner ring.

[0054] In other embodiments, the heat dissipation holes 3 may also be disposed on the sides of the body 1 , that is, the heat dissipation holes 3 are disposed on the side areas 11 of the body 1 .

[0055] The present application does not specifically limit the distribution of the heat dissipation holes 3 along the body 1, and it can adopt any one of the following implementations:

[0056] Embodiment 1. In this embodiment, referring to Figure 1 , multiple heat dissipation holes 3 are evenly spaced along the circumference of the body 1, and then after the retaining ring is installed on the bearing, multiple heat dissipation holes 3 are evenly distributed on the circumference of the inner ring, so that the heat is evenly distributed in the circumference of the inner ring, thereby ensuring the heat dissipation efficiency of the inner ring. At the same time, multiple heat dissipation holes 3 are evenly spaced along the circumference of the body 1, and the weight of the retaining ring can be distributed as evenly as possible in its own circumference, so as to achieve the dynamic balance of the bearing installed with the retaining ring in this application.

[0057] Implementation method 2. In this implementation method, refer to Figure 4 The body 1 has a deformation notch 13 , and the body 1 has an avoidance section 14 arranged opposite to the deformation notch 13 and heat dissipation sections 15 located on both sides of the avoidance section 14 along its circumference, and the heat dissipation holes 3 are arranged in the heat dissipation section 15 .

[0058] Specifically, since it is necessary to press both sides of the deformation notch 13 when installing the retaining spring, stress concentration will occur at the position of the avoidance section 14, and the heat dissipation hole 3 is arranged in the heat dissipation section 15, the structural strength of the avoidance section 14 can be ensured to avoid the situation where the main body 1 is bent and cannot be deformed due to stress concentration in the avoidance section 14. On the one hand, it can reduce the difficulty of assembling the retaining spring to improve the assembly efficiency of the retaining spring. On the other hand, it can reduce the situation where the retaining spring is easily damaged due to the use of large force when installing the retaining spring, thereby reducing the assembly cost of the retaining spring.

[0059] In a preferred embodiment, referring to Figure 1 and Figure 4 , the diameter D of the heat dissipation hole 3 and the distance L between the two convex ribs 2 satisfy: 1 / 2L≤D≤2 / 3L.

[0060] If D is set to be less than 1 / 2L, it will affect the efficiency of discharging the heat generated by the inner ring through the heat dissipation holes 3. If D is set to be greater than 2 / 3L, it will affect the structural strength of the main body 1, and then affect the deformation ability of the retaining spring. As a result, when the user installs the retaining spring, the retaining spring is easily damaged and cannot be deformed again. Setting D to be greater than or equal to 1 / 2L and less than or equal to 2 / 3L can, on the one hand, ensure that the heat generated by the inner ring is discharged through the heat dissipation holes 3, that is, ensure the heat dissipation efficiency of the inner ring. On the other hand, it can ensure the structural strength of the main body 1, thereby ensuring the elastic deformation ability of the retaining spring, and then ensuring the connection stability between the retaining spring and the inner ring.

[0061] In a preferred embodiment, the distance S between two adjacent heat dissipation holes 3 and the circumference C of the body 1 satisfy: 1 / 10C≤S≤1 / 8C.

[0062] If S is set to be less than 1 / 10C, ​​the number of heat dissipation holes 3 will be large, which will affect the structural strength of the main body 1, thereby affecting the deformation ability of the retaining spring, and thus affecting the connection stability between the retaining spring and the inner ring. If S is set to be greater than 1 / 8C, the number of heat dissipation holes 3 will be small, and the heat generated by the inner ring cannot be discharged through the heat dissipation holes 3. Setting S to be greater than or equal to 1 / 10C and less than or equal to 1 / 8C can, on the one hand, ensure the efficiency of the heat generated by the inner ring being discharged through the heat dissipation holes 3, so as to ensure the heat dissipation efficiency of the inner ring. On the other hand, it can reduce the effect of the heat dissipation holes 3 on the structural strength of the main body 1, so as to ensure the elastic deformation ability of the retaining spring, and thus ensure the connection stability between the retaining spring and the inner ring.

[0063] In a preferred embodiment, the heat dissipation hole 3 has an air inlet located on the outer wall of the body 1 and an air outlet located on the inner wall of the body 1 , and the diameter of the air inlet is smaller than the diameter of the air outlet.

[0064] Since the diameter of the air outlet is greater than the diameter of the air inlet, the heat discharged through the heat dissipation hole 3 can be quickly diffused to the surrounding side under the action of the air outlet to avoid the concentration of heat at the air outlet, thereby reducing the pressure at the air outlet, so that the heat generated by the inner ring can be quickly discharged through the heat dissipation hole 3 to further ensure the heat dissipation efficiency of the inner ring.

[0065] The present application does not specifically limit the formation method of the diameter of the air inlet being smaller than the diameter of the air outlet. Preferably, the diameter of the heat dissipation hole 3 gradually decreases from the inside to the outside, so that the diameter of the air inlet is smaller than the diameter of the air outlet, so that the hole wall of the heat dissipation hole 3 can guide the heat, so as to further ensure the heat dissipation efficiency of the inner circle. In other embodiments, the heat dissipation hole 3 includes a first hole and a second hole coaxially arranged with the first hole, the aperture of the first hole is smaller than the aperture of the second hole, and the first hole is arranged on the outer wall of the body 1, and the second hole is arranged on the inner wall of the body 1, and the aperture of the first hole away from the second hole forms an air inlet, and the aperture of the second hole away from the first hole forms an air outlet, so that the diameter of the air inlet is smaller than the diameter of the air outlet.

[0066] The present application does not specifically limit the shape of the heat dissipation hole 3. Preferably, refer to Figures 1 to 4 The heat dissipation hole 3 is circular to ensure the structural strength of the clip, and further ensure the connection stability between the clip and the inner ring. In other embodiments, the heat dissipation hole 3 can also be an elliptical hole, the major axis of the elliptical hole is parallel to the circumferential direction of the body 1, and the minor axis of the elliptical hole is parallel to the axial direction of the body 1, so as to further ensure the heat dissipation efficiency of the upper inner ring.

[0067] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0068] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0069] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A bearing retaining spring, characterized in that: The invention comprises a main body (1) and convex ribs (2) arranged on the outer walls of the two axial ends of the main body (1); the main body (1) is provided with a plurality of heat dissipation holes (3); the main body (1) has a thickness direction; and the heat dissipation holes (3) penetrate the main body (1) in the thickness direction of the main body (1).

2. A bearing retaining spring according to claim 1, characterized in that: The inner wall of the main body (1) has a side area (11) opposite to the convex rib (2) and a belly area (12) located between the side areas (11), and the heat dissipation hole (3) is arranged in the belly area (12).

3. A bearing retaining spring according to claim 2, characterized in that: The abdominal region (12) has a width direction parallel to the axial direction of the body (1) and a midpoint located in the middle of the width direction of the abdominal region (12), and the center point of the heat dissipation hole (3) coincides with the midpoint.

4. A bearing retaining spring according to claim 2, characterized in that: The belly area (12) is arranged to be recessed outwards, so that a heat dissipation space is formed between the belly area (12) and the shaft.

5. A bearing retaining spring according to claim 4, characterized in that: The depression depth H of the abdominal region (12) and the thickness T of the body (1) satisfy the following relationship: 1 / 4T≤H≤1 / 3T.

6. A bearing retaining spring according to claim 1, characterized in that: The plurality of heat dissipation holes (3) are evenly spaced along the circumference of the body (1).

7. A bearing retaining spring according to claim 1, characterized in that: The body (1) has a deformation notch (13), and the body (1) has an avoidance section (14) arranged opposite to the deformation notch (13) and heat dissipation sections (15) located on both sides of the avoidance section (14) along its circumference, and the heat dissipation hole (3) is arranged in the heat dissipation section (15).

8. A bearing retaining spring according to claim 1, characterized in that: The diameter D of the heat dissipation hole (3) and the distance L between the two convex ribs (2) satisfy: 1 / 2L≤D≤2 / 3L.

9. A bearing retaining spring according to claim 1, characterized in that: The distance S between two adjacent heat dissipation holes (3) and the circumference C of the body (1) satisfy the following relationship: 1 / 10C≤S≤1 / 8C.

10. A bearing retaining spring according to claim 1, characterized in that: The heat dissipation hole (3) comprises an air inlet located on the outer wall of the body (1) and an air outlet located on the inner wall of the body (1), and the diameter of the air inlet is smaller than the diameter of the air outlet.

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