Bidirectional limiting clamp spring and bearing

Abstract

The utility model relates to the technical field of bearings, and discloses a bidirectional limiting clamp spring and a bearing.The bidirectional limiting clamp spring comprises a body and convex ribs arranged on the outer walls of the two axial ends of the body, and protrusions are arranged on the outer walls of the body and can be matched with two inner rings in an inserted mode to limit relative rotation of the two inner rings; after the two-way limiting clamp spring is installed on the inner rings, the convex ribs are located in the limiting grooves of the inner rings, and the protrusions are located in the containing grooves of the inner rings, so that the two-way limiting clamp spring not only achieves limiting of movement of the two inner rings in the axial direction, but also achieves limiting of relative rotation of the two inner rings. The two inner rings are prevented from being mutually abraded, and the two-way limiting clamp spring is prevented from being abraded, so that the service life of the bearing is guaranteed; and meanwhile, the condition of high temperature easily caused by relative rotation of the two inner rings is avoided, so that the service life of the bearing is further ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of bearings, and specifically relates to a bidirectional limit spring and 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 connection 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. Since the retaining spring can only limit the inner ring in its own axial direction, after the double-row tapered roller bearing is installed on the shaft, the two inner rings are prone to relative rotation, which makes the inner rings prone to wear. When the two inner rings rotate relative to each other, they will rotate relative to the retaining spring, which will also cause the retaining spring to wear. At the same time, the relative rotation of the two inner rings will also generate heat, thereby affecting the service life of the double-row tapered roller bearing. Utility Model Content

[0004] The present application provides a bidirectional limit spring and a bearing to prevent the two inner rings from rotating relative to each other, thereby ensuring the service life of the bearing.

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

[0006] A two-way limit clamp comprises a body and convex ribs arranged on the outer walls of the two axial ends of the body. The outer wall of the body is provided with protrusions, which can be plugged and matched with two inner rings to limit the relative rotation of the two inner rings.

[0007] By adopting the above technical solution, when the bidirectional limit clamping spring in the present application is used to limit the inner ring, a receiving groove for receiving the protrusion needs to be provided on the inner ring. When installing the bidirectional limit clamping spring, first press the two ends of the body to deform the body, that is, reduce the diameter of the body, then place the body into the inner ring, adjust the protrusion to align the protrusion with the receiving groove, then loosen the body to restore the deformation of the body under the action of its own elastic force, insert the protrusion into the receiving groove of the inner ring, and the rib is located in the limiting groove to complete the installation of the bidirectional limit clamping spring.

[0008] Since the rib is located in the limiting groove of the inner ring, and the protrusion is located in the receiving groove of the inner ring, the two-way limiting retaining spring not only limits the axial movement of the two inner rings, but also limits the relative rotation of the two inner rings, so as to avoid the mutual wear of the two inner rings and the wear of the two-way limiting retaining spring, thereby ensuring the service life of the bearing; at the same time, it avoids the high temperature caused by the relative rotation of the two inner rings, thereby further ensuring the service life of the bearing.

[0009] Optionally, the main body has a connecting section opposite to the rib and a middle section located between the connecting sections, and the protrusion is located in the middle position of the middle section.

[0010] By adopting the above technical scheme, since the protrusion is located in the middle position of the middle section, the accommodating grooves on the two inner rings can be set on the sides of the inner rings, so that after the two inner rings are assembled together, the accommodating grooves on the two inner rings can jointly accommodate the protrusions, so as to ensure the limiting effect of the protrusions on the two inner rings while allowing the protrusions to be arranged in one row in the axial direction of the main body, thereby achieving the effect of facilitating the production of bidirectional limit retaining springs to improve the production efficiency of bidirectional limit retaining springs; at the same time, it can also reduce the difficulty of installing the bidirectional limit retaining springs to improve the installation efficiency of the bidirectional limit retaining springs.

[0011] Optionally, a plurality of protrusions are evenly spaced along the circumference of the body.

[0012] By adopting the above technical scheme, since a plurality of protrusions are evenly spaced along the circumference of the main body, the limiting points of the two-way limit retaining spring and the inner ring are increased, thereby further increasing the limiting effect of the protrusions on the two inner rings, so as to further avoid the possibility of relative rotation of the two inner rings; at the same time, since a plurality of protrusions are evenly spaced along the circumference of the main body, the adjustment angle of the two-way limit retaining spring each time the two-way limit retaining spring is installed can also be reduced, so as to further achieve the effect of facilitating the installation of the two-way limit retaining spring, so as to further improve the installation efficiency of the two-way limit retaining spring.

[0013] Optionally, the protrusion is formed by stamping the inner side of the body toward the outer side of the body.

[0014] By adopting the above-mentioned technical scheme, since the protrusion is formed by stamping from the inner side of the main body toward the outer side of the main body, on the one hand, the production difficulty of the two-way limit retaining spring is reduced, and on the other hand, the increase in the weight of the two-way limit retaining spring caused by the setting of the protrusion is avoided. At the same time, the position where the protrusion is set on the main body can also form a cavity to reduce the contact area between the two-way limit retaining spring and the shaft after the bearing with the two-way limit retaining spring in the application is installed on the shaft, so as to reduce the heat generation of the two-way limit retaining spring and increase the service life of the bearing installed with the two-way limit retaining spring in the application.

[0015] Optionally, a thickness D1 of the rib protruding from the outer wall of the main body and a thickness D2 of the protrusion protruding from the outer wall of the main body satisfy: 1 / 2D1≤D2≤D1.

[0016] By adopting the above technical solution, if the thickness D2 of the protrusion protruding from the main body is set to be greater than the thickness D1 of the rib protruding from the outer wall of the main body, it will result in a large pressing force being required to apply to the two-way limit retaining spring when installing the two-way limit retaining spring, so that the two-way limit retaining spring undergoes a large deformation, which in turn causes metal fatigue of the two-way limit retaining spring, thereby affecting the connection stability between the two-way limit retaining spring and the inner ring; if the thickness D2 of the protrusion protruding from the main body is set to be less than 1 / 2 times the thickness D1 of the rib protruding from the outer wall of the main body, it may cause the insertion depth of the protrusion and the accommodating groove of the inner ring to be smaller, thereby affecting the limiting effect of the protrusion on the inner ring. The thickness D2 of the protrusion protruding from the main body is set to be less than or equal to the thickness D1 of the rib protruding from the outer wall of the main body and greater than or equal to 1 / 2 times the thickness D1 of the rib protruding from the outer wall of the main body. On the one hand, it is easy to install the two-way limit retaining spring, while ensuring the connection stability between the two-way limit retaining spring and the inner ring. On the other hand, it improves the limiting effect of the protrusion on the inner ring to further avoid the possibility of relative rotation between the two inner rings, thereby further ensuring the service life of the bearing installed with the two-way limit retaining spring in this application.

[0017] Optionally, the main body has a connecting section opposite to the convex rib and a middle section located between the connecting sections, and a width W1 of the middle section and a width W2 of the protrusion satisfy: 1 / 3W1≤W2≤2 / 3W1.

[0018] By adopting the above technical solution, if the width W2 of the protrusion is set to be greater than 2 / 3W1, the distance between the opposite sides of the protrusion and the rib will be smaller, thereby affecting the installation efficiency of the bidirectional limit retaining spring; if the width W2 of the protrusion is set to be less than 1 / 3W1, the width of the protrusion will be smaller, thereby affecting the limiting cooperation effect between the protrusion and the inner ring; and setting the width W2 of the protrusion to satisfy greater than or equal to 1 / 3W1 and less than or equal to 2 / 3W1, on the one hand, the installation efficiency of the bidirectional limit retaining spring is guaranteed, and on the other hand, the limiting cooperation effect between the protrusion and the inner ring is guaranteed.

[0019] Optionally, the protrusion has a connecting end connected to the body and a limiting end opposite to the connecting end, and a width of the limiting end is smaller than a width of the connecting end.

[0020] By adopting the above technical solution, since the width of the limiting end is smaller than the width of the connecting end, when the two-way limiting retaining spring is installed, the limiting end can guide the protrusion so that the protrusion can be more easily inserted into the receiving groove of the inner ring, thereby reducing the installation difficulty of the two-way limiting retaining spring and thus improving the installation efficiency of the two-way limiting retaining spring; at the same time, it can also reduce the difficulty of forming the protrusion, thereby reducing the production cost of the two-way limiting retaining spring.

[0021] Optionally, the main body has a connecting section opposite to the convex rib and a middle section located between the connecting sections, and the inner circumference of the middle section is recessed outward.

[0022] By adopting the above-mentioned technical solution, since the inner circumference of the middle section is recessed outward, after the bearing with the two-way limit retaining spring in the present application is installed on the shaft, a heat dissipation space is formed between the middle section and the shaft, so that the heat generated by the inner ring and the two-way limit retaining spring can be quickly discharged through the heat dissipation space, so as to improve the heat dissipation efficiency of the bearing installed with the two-way limit retaining spring in the present application, and further ensure the service life of the bearing installed with the two-way limit retaining spring in the present application.

[0023] The present application also discloses a bearing, which includes an inner ring and the above-mentioned bidirectional limit spring, and the inner circumferential surface of the inner ring is provided with an accommodating groove for accommodating the protrusion.

[0024] By adopting the above technical solution, after the bidirectional limit spring is installed between the two inner rings, the protrusion and the receiving groove are plugged in and matched, so that the plug-in cooperation between the protrusion and the receiving groove limits the relative rotation of the two inner rings, thereby avoiding the relative rotation of the two inner rings, thereby avoiding the wear of the two inner rings due to relative rotation, and thus ensuring the service life of the bearing.

[0025] Optionally, the accommodating groove penetrates the inner ring in the wall thickness direction of the inner ring.

[0026] By adopting the above technical solution, since the receiving groove penetrates the inner ring in the wall thickness direction of the inner ring, on the one hand, the difficulty of opening the receiving groove on the inner ring is reduced to improve the production efficiency of the inner ring, and on the other hand, the receiving groove can assist the heat dissipation of the bearing, so that the heat on the inner side of the inner ring can be quickly discharged through the receiving groove, thereby improving the heat dissipation efficiency of the bearing.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The two-way limit retaining spring in the present application comprises a main body and convex ribs arranged on the outer walls of the two axial ends of the main body. The outer wall of the main body is provided with protrusions, which can be plugged and matched with the inner ring to limit the relative rotation of the two inner rings. After the two-way limit retaining spring is installed on the inner ring, the convex rib is located in the limiting groove of the inner ring and the protrusion is located in the accommodating groove of the inner ring, so that the two-way limit retaining spring not only limits the movement of the two inner rings in their own axial direction, but also limits the relative rotation of the two inner rings, so as to avoid the mutual wear of the two inner rings and the wear of the two-way limit retaining spring, thereby ensuring the service life of the bearing; at the same time, it avoids the high temperature caused by the relative rotation of the two inner rings, thereby further ensuring the service life of the bearing.

[0029] 2. The main body in the present application has a connecting section opposite to the rib and an intermediate section between the connecting sections, and the protrusion is located in the middle position of the intermediate section, so that the accommodating grooves on the two inner rings can be set on the sides of the inner rings, so that after the two inner rings are assembled together, the accommodating grooves on the two inner rings can jointly accommodate the protrusions, so as to ensure the limiting effect of the protrusions on the two inner rings while allowing the protrusions to be arranged in one row in the axial direction of the main body, thereby achieving the effect of facilitating the production of bidirectional limit retaining springs to improve the production efficiency of bidirectional limit retaining springs; at the same time, it can also reduce the difficulty of installing the bidirectional limit retaining springs to improve the installation efficiency of the bidirectional limit retaining springs.

[0030] 3. The protrusions in the present application are arranged in multiple numbers at even intervals along the circumference of the main body to increase the limiting points between the two-way limit retaining spring and the inner ring, thereby further increasing the limiting effect of the protrusions on the two inner rings to further avoid the possibility of relative rotation between the two inner rings; at the same time, since the multiple protrusions are arranged in multiple numbers at even intervals along the circumference of the main body, the adjustment angle of the two-way limit retaining spring can be reduced each time the two-way limit retaining spring is installed, so as to further achieve the effect of facilitating the installation of the two-way limit retaining spring, so as to further improve the installation efficiency of the two-way limit retaining spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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:

[0032] Figure 1 This is a schematic structural diagram of a bidirectional limit clamp spring in one implementation mode of the present application;

[0033] Figure 2 This is a partial structural diagram of the bidirectional limit clamp spring in one embodiment of the present application, mainly showing D1 and D2;

[0034] Figure 3This is a partial structural schematic diagram of the bidirectional limit clamp spring in one embodiment of the present application, mainly showing W1 and W2;

[0035] Figure 4 This is a partial structural schematic diagram of the bidirectional limit clamp spring in one embodiment of the present application, mainly showing that the inner circumference of the body is concave outward;

[0036] Figure 5 This is a schematic diagram of the structure of the inner ring in one implementation manner of the present application;

[0037] Figure 6 This is a schematic diagram of the connection structure between the bidirectional limit spring and the inner ring in one implementation of the present application.

[0038] Reference numerals:

[0039] 1. Main body; 11. Deformation notch; 12. Connecting section; 13. Middle section; 2. Raised rib; 3. Protrusion; 4. Inner ring; 41. Accommodating groove; 42. Ring groove; 43. Limiting groove. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Reference Figures 1 to 4 , discloses a bidirectional limit spring, including a main body 1 and ribs 2 arranged on the outer walls of the main body 1 at both axial ends, the outer wall of the main body 1 is provided with protrusions 3, and the protrusions 3 can be plugged and matched with two inner rings 4 to limit the relative rotation of the two inner rings 4.

[0046] When the bidirectional limit clamp in the present application is used to limit the inner ring 4, it is necessary to provide a receiving groove 41 for receiving the protrusion 3 on the inner ring 4. When installing the bidirectional limit clamp, first press the two ends of the body 1 to deform the body 1, that is, reduce the diameter of the body 1, then place the body 1 in the inner ring 4, and then adjust the body 1 to align the protrusion 3 with the receiving groove 41, and then loosen the body 1 to restore the deformation of the body 1 under the action of its own elastic force, insert the protrusion 3 into the receiving groove 41 of the inner ring 4, and the rib 2 is located in the limiting groove 43, so as to complete the installation of the bidirectional limit clamp.

[0047] Since the rib 2 is located in the limiting groove 43 of the inner ring 4, and the protrusion 3 is located in the receiving groove 41 of the inner ring 4, the bidirectional limiting retaining spring not only limits the axial movement of the two inner rings 4, but also limits the relative rotation of the two inner rings 4, so as to avoid the mutual wear of the two inner rings 4 and the wear of the bidirectional limiting retaining spring, thereby ensuring the service life of the bearing; at the same time, it avoids the high temperature caused by the relative rotation of the two inner rings 4, thereby further ensuring the service life of the bearing.

[0048] It should be noted that the body 1 has a deformation notch 11 , so that when the body 1 is pressed, two opposite sides of the deformation notch 11 can move toward each other, thereby changing the diameter of the body 1 to achieve deformation of the body 1 .

[0049] The present application does not specifically limit the location of the protrusion 3, and it can adopt any one of the following embodiments:

[0050] Embodiment 1. In this embodiment, referring to Figures 1 to 4 The body 1 has a connecting section 12 opposite to the rib 2 and a middle section 13 located between the connecting sections 12 , and the protrusion 3 is located in the middle position of the middle section 13 .

[0051] It should be noted that the above-mentioned protrusion 3 being located at the middle position of the middle section 13 means that the protrusion 3 is located at the middle position of the middle section 13 parallel to the axial direction of the body 1 .

[0052] Since the protrusion 3 is located in the middle position of the middle section 13, the accommodating grooves 41 on the two inner rings 4 can be set on the side of the inner ring 4, so that after the two inner rings 4 are assembled together, the accommodating grooves 41 on the two inner rings 4 can jointly accommodate the protrusion 3, so as to ensure that the protrusion 3 has a limiting effect on the two inner rings 4, while the protrusion 3 is arranged in one row in the axial direction of the main body 1, thereby achieving the effect of facilitating the production of bidirectional limit retaining springs, so as to improve the production efficiency of the bidirectional limit retaining springs; at the same time, it can also reduce the difficulty of installing the bidirectional limit retaining springs, so as to improve the installation efficiency of the bidirectional limit retaining springs.

[0053] It can be understood that, since two convex ribs 2 are provided, the connecting section 12 has two and is respectively provided corresponding to the two convex ribs 2 .

[0054] Embodiment 2. In this embodiment, at least two protrusions 3 are provided along the axial direction of the main body 1 corresponding to two inner rings 4, and each inner ring 4 is provided with independent receiving grooves 41, so that each protrusion 3 is respectively plugged into and matched with the receiving grooves 41 on different inner rings 4, thereby limiting the relative rotation of the two inner rings 4.

[0055] In a preferred embodiment, referring to Figure 1 There are multiple protrusions 3 evenly spaced along the circumference of the main body 1 to increase the limiting points of the two-way limit retaining spring and the inner ring 4, thereby further increasing the limiting effect of the protrusions 3 on the two inner rings 4 to further avoid the possibility of relative rotation between the two inner rings 4; at the same time, since the multiple protrusions 3 are evenly spaced along the circumference of the main body 1, the adjustment angle of the two-way limit retaining spring can be reduced each time when the two-way limit retaining spring is installed, so as to further achieve the effect of facilitating the installation of the two-way limit retaining spring, so as to further improve the installation efficiency of the two-way limit retaining spring.

[0056] The present application does not specifically limit the formation method of the protrusion 3, and it can adopt any one of the following embodiments:

[0057] Embodiment 1. In this embodiment, referring to Figure 1 , Figure 2 and Figure 3The protrusion 3 is formed by stamping from the inner side of the main body 1 toward the outer side of the main body 1, which reduces the production difficulty of the two-way limit retaining spring on the one hand, and avoids the increase in weight of the two-way limit retaining spring due to the setting of the protrusion 3 on the other hand. At the same time, the position where the protrusion 3 is set in the body 1 can also form a cavity to reduce the contact area between the two-way limit retaining spring and the shaft after the bearing with the two-way limit retaining spring in the application is installed on the shaft, so as to reduce the heat generation of the two-way limit retaining spring and increase the service life of the bearing installed with the two-way limit retaining spring in the application.

[0058] Embodiment 2. In this embodiment, the main body 1 is provided with a through hole, a limit column is passed through the through hole, and the part of the limit column located outside the through hole forms a protrusion 3 to reduce the production difficulty of the bidirectional limit retaining spring, thereby improving the production efficiency of the bidirectional limit retaining spring.

[0059] In a preferred embodiment, referring to Figure 2 , the thickness D1 of the rib 2 protruding from the outer wall of the body 1 and the thickness D2 of the protrusion 3 protruding from the outer wall of the body 1 satisfy: 1 / 2D1≤D2≤D1.

[0060] If the thickness D2 of the protrusion 3 protruding from the main body 1 is set to be greater than the thickness D1 of the rib 2 protruding from the outer wall of the main body 1, it will result in a greater pressing force being required on the two-way limit retaining spring when installing it, so that the two-way limit retaining spring undergoes a greater deformation, which in turn causes metal fatigue of the two-way limit retaining spring, thereby affecting the connection stability between the two-way limit retaining spring and the inner ring 4; if the thickness D2 of the protrusion 3 protruding from the main body 1 is set to be less than 1 / 2 times the thickness D1 of the rib 2 protruding from the outer wall of the main body 1, it may result in a smaller insertion depth between the protrusion 3 and the accommodating groove 41 of the inner ring 4, thereby affecting the limiting effect of the protrusion 3 on the inner ring 4. The thickness D2 of the protrusion 3 protruding from the main body 1 is set to be less than or equal to the thickness D1 of the rib 2 protruding from the outer wall of the main body 1 and greater than or equal to 1 / 2 times the thickness D1 of the rib 2 protruding from the outer wall of the main body 1. On the one hand, it is easy to install the two-way limit retaining spring, while ensuring the connection stability between the two-way limit retaining spring and the inner ring 4. On the other hand, it improves the limiting effect of the protrusion 3 on the inner ring 4 to further avoid the possibility of relative rotation between the two inner rings 4, thereby further ensuring the service life of the bearing installed with the two-way limit retaining spring in this application.

[0061] It should be noted that the thickness of the protrusion 3 protruding from the outer wall of the body 1 refers to the distance from the connection between the protrusion 3 and the outer peripheral surface of the body 1 to the end of the protrusion 3 away from the body 1.

[0062] In a preferred embodiment, referring to Figure 3The body 1 has a connecting section 12 opposite to the rib 2 and a middle section 13 located between the connecting sections 12, and a width W1 of the middle section 13 and a width W2 of the protrusion 3 satisfy: 1 / 3W1≤W2≤2 / 3W1.

[0063] If the width W2 of the protrusion 3 is set to be greater than 2 / 3W1, the distance between the opposite sides of the protrusion 3 and the rib 2 will be smaller, thereby affecting the installation efficiency of the bidirectional limit retaining spring; if the width W2 of the protrusion 3 is set to be less than 1 / 3W1, the width of the protrusion 3 will be smaller, thereby affecting the limiting matching effect between the protrusion 3 and the inner ring 4; and setting the width W2 of the protrusion 3 to satisfy greater than or equal to 1 / 3W1 and less than or equal to 2 / 3W1, on the one hand, the installation efficiency of the bidirectional limit retaining spring is guaranteed, and on the other hand, the limiting matching effect between the protrusion 3 and the inner ring 4 is guaranteed.

[0064] It should be noted that the width of the middle section 13 refers to the distance between the two ribs 2 , and the width of the protrusion 3 refers to the distance between two opposite sides of the protrusion 3 in a direction parallel to the axial direction of the body 1 .

[0065] In a preferred embodiment, the protrusion 3 has a connecting end connected to the body 1 and a limiting end opposite to the connecting end, and the width of the limiting end is smaller than the width of the connecting end.

[0066] Specifically, the width of the protrusion 3 is gradually reduced from the connecting end to the limiting end, so that when the two-way limit retaining spring is installed, the limiting end can guide the protrusion 3 so that the protrusion 3 can be more easily inserted into the receiving groove 41 of the inner ring 4, thereby reducing the difficulty of installing the two-way limit retaining spring and thus improving the installation efficiency of the two-way limit retaining spring; at the same time, it can also reduce the difficulty of forming the protrusion 3, so as to reduce the production cost of the two-way limit retaining spring.

[0067] In a preferred embodiment, referring to Figure 4 The main body 1 has a connecting section 12 opposite to the convex rib 2 and an intermediate section 13 located between the connecting sections 12. The inner circumference of the intermediate section 13 is recessed outward, so that after the bearing having the bidirectional limit retaining spring in the present application is installed on the shaft, a heat dissipation space is formed between the intermediate section 13 and the shaft, so that the heat generated by the inner ring 4 and the bidirectional limit retaining spring can be quickly discharged through the heat dissipation space, so as to improve the heat dissipation efficiency of the bearing installed with the bidirectional limit retaining spring in the present application, thereby further ensuring the service life of the bearing installed with the bidirectional limit retaining spring in the present application.

[0068] It should be noted that the inner circumference of the middle section 13 being recessed outwardly means that the inner circumference of the middle section 13 is recessed in a direction away from the center of the main body 1 .

[0069] Reference Figure 5 and Figure 6The present application also discloses a bearing, which includes an inner ring 4 and the above-mentioned bidirectional limit spring, and the inner circumferential surface of the inner ring 4 is provided with an accommodating groove 41 for accommodating the protrusion 3.

[0070] It can be understood that there are two inner rings 4, and the ends of the two inner rings 4 close to each other are each provided with an annular groove 42, and the groove wall of the annular groove 42 is provided with a limiting groove 43. After the bidirectional limiting retaining spring is installed between the two inner rings 4, the body 1 is located in the annular groove 42, the rib 2 is located in the limiting groove 43, and the protrusion 3 is plugged into the receiving groove 41, so that the plug-in cooperation between the protrusion 3 and the receiving groove 41 limits the relative rotation of the two inner rings 4, thereby avoiding the relative rotation of the two inner rings 4, and further avoiding the wear of the two inner rings 4 due to relative rotation, thereby ensuring the service life of the bearing.

[0071] The present application does not specifically limit the location of the receiving groove 41, and the receiving groove 41 may adopt any one of the following embodiments:

[0072] Embodiment 1. In this embodiment, referring to Figure 5 and Figure 6 The protrusion 3 is located in the middle position of the middle section 13. At this time, the accommodating groove 41 is located on the side of the two inner rings 4 close to one end, so that the two accommodating grooves 41 together form a space for accommodating the protrusion 3, and then the protrusion 3 is simultaneously plugged and matched with the two accommodating grooves 41 to reduce the production difficulty of the inner ring 4, thereby improving the production efficiency of the inner ring 4.

[0073] Embodiment 2. In this embodiment, at least two protrusions 3 are provided corresponding to two inner rings 4 along the axial direction of the main body 1. At this time, the receiving groove 41 is located between the side of the inner ring 4 and the limiting groove 43 on the inner ring 4, so that each protrusion 3 is plugged into the receiving groove 41 on the corresponding inner ring 4.

[0074] In a preferred embodiment, referring to Figure 5 and Figure 6 The receiving groove 41 penetrates the inner ring 4 in the wall thickness direction of the inner ring 4, thereby reducing the difficulty of opening the receiving groove 41 on the inner ring 4 to improve the production efficiency of the inner ring 4 on the one hand, and enabling the receiving groove 41 to assist the heat dissipation of the bearing on the other hand, so that the heat inside the inner ring 4 can be quickly discharged through the receiving groove 41 to improve the heat dissipation efficiency of the bearing.

[0075] In a preferred embodiment, the bearing further includes an outer ring sleeved outside the two inner rings 4, and a plurality of rolling bodies are arranged between the inner rings 4 and the outer rings so that the inner rings 4 and the outer rings can rotate relative to each other through the rolling bodies to reduce the friction between the two.

[0076] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0077] 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.

[0078] 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 bidirectional limit spring, characterized in that: It 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 outer wall of the main body (1) is provided with a protrusion (3); the protrusion (3) can be plugged into and matched with two inner rings (4) to limit the relative rotation of the two inner rings (4).

2. A bidirectional limit spring according to claim 1, characterized in that: The body (1) comprises a connecting section (12) opposite to the rib (2) and a middle section (13) located between the connecting sections (12), and the protrusion (3) is located in the middle of the middle section (13).

3. A bidirectional limit spring according to claim 1, characterized in that: A plurality of protrusions (3) are evenly spaced along the circumference of the body (1).

4. A bidirectional limit clamp according to claim 1, characterized in that: The protrusion (3) is formed by punching the inner side of the body (1) toward the outer side of the body (1).

5. A bidirectional limit clamp according to claim 1, characterized in that: The thickness D1 of the rib (2) protruding from the outer wall of the body (1) and the thickness D2 of the protrusion (3) protruding from the outer wall of the body (1) satisfy the following relationship: 1 / 2D1≤D2≤D1.

6. A bidirectional limit clamp according to claim 1, characterized in that: The body (1) comprises a connecting section (12) opposite to the rib (2) and an intermediate section (13) located between the connecting sections (12); a width W1 of the intermediate section (13) and a width W2 of the protrusion (3) satisfy the following relationship: 1 / 3W1≤W2≤2 / 3W1.

7. A bidirectional limit clamp according to claim 1, characterized in that: The protrusion (3) has a connecting end connected to the body (1) and a limiting end opposite to the connecting end, and the width of the limiting end is smaller than the width of the connecting end.

8. The bidirectional limit clamping spring according to claim 1, characterized in that: The body (1) comprises a connecting section (12) opposite to the convex rib (2) and a middle section (13) located between the connecting sections (12); the inner circumference of the middle section (13) is recessed outwards.

9. A bearing, characterized in that: It comprises an inner ring (4) and a bidirectional limit spring as described in any one of claims 1 to 8, wherein the inner circumferential surface of the inner ring (4) is provided with a receiving groove (41) for receiving the protrusion (3).

10. A bearing according to claim 9, characterized in that: The accommodating groove (41) penetrates the inner ring (4) in the wall thickness direction of the inner ring (4).

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