Connecting rod bearing

Abstract

The connecting rod bearing is a single piece of an integrated structure and comprises a connecting rod, a deep groove ball bearing and a knuckle bearing, the connecting rod is provided with a first end and a second end which are opposite in the longitudinal direction, the deep groove ball bearing comprises a deep groove ball bearing outer ring, and the deep groove ball bearing outer ring is provided with a deep groove ball bearing outer ring peripheral wall; the outer peripheral wall of the outer ring of the deep groove ball bearing is directly connected with the first end of the connecting rod to form an integral structure; the knuckle bearing comprises a knuckle bearing outer ring, the knuckle bearing outer ring is provided with a knuckle bearing outer ring peripheral wall, and the knuckle bearing outer ring peripheral wall and the second end of the connecting rod are directly connected and are of an integrated structure. Therefore, the assembly mode of a double-end bearing structure in the background technology is omitted, the number of assembly parts is reduced, the design and production cost is reduced, the operation convenience of the connecting rod bearing is improved, the connection reliability of the connecting rod and the two bearings is ensured, and the application range of a device adopting the connecting rod bearing is widened.

Description

Technical Field

[0001] The present disclosure relates to the field of bearings, and more particularly to a connecting rod bearing. Background Art

[0002] In the existing bearing structure, the connecting rod bearing is widely used. However, its structural design is relatively simple, and most of them are single-head bearings, which are not smooth to use, and the overall economy and practicality are not high. In the newly emerged double-head bearing structure, it is usually necessary to use a connecting rod to detachably connect the two bearings, such as the double-head connecting rod bearing published in the Chinese patent document CN204061522U authorized and announced on December 31, 2014. This requires adding the design and process of assembly between the connecting rod and the bearing, which greatly increases the design and production costs, and the reliability of the connection between the connecting rod and the bearing is also difficult to guarantee.

[0003] With the improvement of existing production technology and the need for production efficiency, the application of deep groove ball bearings and spherical plain bearings has become very popular. Deep groove ball bearings are high-speed rolling bearings that can withstand both axial and radial loads. Spherical plain bearings are spherical sliding bearings that can tilt within a certain angle range. However, this aspect has not yet been applied to double-ended connecting rod bearings. Utility Model Content

[0004] In view of the problems existing in the background technology, an object of the present disclosure is to provide a connecting rod bearing, which can avoid the assembly method of the double-headed bearing structure of the background technology and reduce the design and production costs.

[0005] An object of the present disclosure is to provide a connecting rod bearing, which can improve the application range of devices using the connecting rod bearing.

[0006] Thus, a connecting rod bearing is provided, which is a single piece of an integrated structure, including a connecting rod, a deep groove ball bearing and a spherical bearing, the connecting rod having a first end and a second end opposite in the longitudinal direction, the deep groove ball bearing including a deep groove ball bearing outer ring, the deep groove ball bearing outer ring having a deep groove ball bearing outer ring outer peripheral wall, the deep groove ball bearing outer ring outer peripheral wall is directly connected to the first end of the connecting rod and is an integrated structure; the spherical bearing includes a spherical bearing outer ring, the spherical bearing outer ring has a spherical bearing outer ring outer peripheral wall, the spherical bearing outer ring outer peripheral wall is directly connected to the second end of the connecting rod and is an integrated structure.

[0007] The beneficial effects of the present disclosure are as follows.

[0008] In the connecting rod bearing disclosed in the present invention, the outer peripheral wall of the outer ring of the deep groove ball bearing is directly connected to the first end of the connecting rod to form an integrated structure, and the outer peripheral wall of the outer ring of the spherical bearing is directly connected to the second end of the connecting rod to form an integrated structure, so that the disclosed connecting rod bearing is a single piece of an integrated structure, eliminating the assembly method of the double-headed bearing structure of the background technology, saving the number of assembly parts, reducing design and production costs, improving the operating convenience of the connecting rod bearing, and ensuring the reliability of the connection between the connecting rod and the two bearings.

[0009] In the connecting rod bearing disclosed in the present invention, by combining a deep groove ball bearing and a spherical plain bearing in the connecting rod bearing, the deep groove ball bearing can bear both axial load and radial load at the same time and is suitable for high precision and high speed, while the spherical plain bearing is a spherical sliding bearing and can make tilting motion within a certain angle range, can carry a large load and is impact-resistant, thereby improving the application range of devices using connecting rod bearings. For example, the connecting rod bearing can be used in a diesel engine, the spherical plain bearing end is connected with the crank pin, and the deep groove ball bearing end is used with the piston pin, thereby reducing the wear of the pin and improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a perspective view of a connecting rod bearing according to the present disclosure.

[0011] Figure 2 yes Figure 1 Top view of the .

[0012] Figure 3 yes Figure 1 A cross-sectional view showing the connectors and links for clarity.

[0013] The description of the accompanying drawings is as follows.

[0014] 100 connecting rod bearing 212a first annular outer concave track

[0015] D1 longitudinal 22 deep groove ball bearing inner ring

[0016] D2 axial 221 deep groove ball bearing inner ring outer wall

[0017] P1 First center plane 221a Second annular concave track P2 second center plane 23 sphere

[0018] 1 connecting rod 3 joint bearings

[0019] 11 First end 31 Spherical plain bearing outer ring

[0020] 12 second end 311 outer peripheral wall of the outer ring of the spherical plain bearing

[0021] 13 upper surface 312 inner wall of spherical plain bearing outer ring

[0022] 14 lower surface 32 spherical bearing inner ring

[0023] 2 Deep groove ball bearing 321 spherical plain bearing inner ring outer wall

[0024] 21 Deep groove ball bearing outer ring 33 Sliding friction pair

[0025] 211 deep groove ball bearing outer ring outer wall 200 connector

[0026] 212 deep groove ball bearing outer ring inner wall 300 connecting parts DETAILED DESCRIPTION

[0027] The accompanying drawings show embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be interpreted as limiting, but merely as the basis for the claims and as a representative basis for teaching ordinary technicians in the field to implement the present disclosure in various ways.

[0028] Reference Figures 1 to 3 According to the present disclosure, the connecting rod bearing 100 is a single piece of an integral structure, and the connecting rod bearing 10 includes a connecting rod 1, a deep groove ball bearing 2, and a spherical plain bearing 3. The connecting rod 1 has a first end 11 and a second end 12 opposite to each other along the longitudinal direction D1. The deep groove ball bearing 2 includes a deep groove ball bearing outer ring 21, and the deep groove ball bearing outer ring 21 has a deep groove ball bearing outer ring outer peripheral wall 211, and the deep groove ball bearing outer ring outer peripheral wall 211 is directly connected to the first end 11 of the connecting rod 1 and is an integral structure. The spherical plain bearing 3 includes a spherical plain bearing outer ring 31, and the spherical plain bearing outer ring 31 has a spherical plain bearing outer ring outer peripheral wall 311, and the spherical plain bearing outer ring outer peripheral wall 311 is directly connected to the second end 12 of the connecting rod 1 and is an integral structure.

[0029] In the connecting rod bearing 100 disclosed in the present invention, the outer peripheral wall 211 of the outer ring of the deep groove ball bearing is directly connected to the first end 11 of the connecting rod 1 to form an integrated structure, and the outer peripheral wall 311 of the outer ring of the spherical bearing is directly connected to the second end 12 of the connecting rod 1 to form an integrated structure, so that the disclosed connecting rod bearing 100 is a single piece of an integrated structure, eliminating the assembly method of the double-headed bearing structure of the background technology, saving the number of assembly parts, reducing design and production costs, improving the operating convenience of the connecting rod bearing 100, and ensuring the reliability of the connection between the connecting rod and the two bearings.

[0030] In the connecting rod bearing 100 disclosed in the present invention, by combining the deep groove ball bearing 2 and the spherical plain bearing 3 in the connecting rod bearing 100, the deep groove ball bearing 2 can bear both axial load and radial load and is suitable for high precision and high speed, while the spherical plain bearing 3 is a spherical sliding bearing and can make tilting motion within a certain angle range, can carry a large load and is impact-resistant, thereby improving the application range of the device using the connecting rod bearing 100. For example, the connecting rod bearing 100 can be used in a diesel engine, the end of the spherical plain bearing 3 is connected with the crank pin, and the end of the deep groove ball bearing 2 is used with the piston pin, thereby reducing the wear of the pin and improving the reliability of the device.

[0031] Specifically, in one example, referring to Figure 3 The deep groove ball bearing outer ring 21 also has a deep groove ball bearing outer ring inner peripheral wall 212, which is cylindrical with a first annular outer concave track 212a. The deep groove ball bearing 2 also includes a deep groove ball bearing inner ring 22 and a plurality of balls 23. The deep groove ball bearing inner ring 22 is sleeved in the deep groove ball bearing outer ring 21, and the deep groove ball bearing inner ring 22 is used for connecting with an external connector 200. The deep groove ball bearing inner ring 22 also has a deep groove ball bearing inner ring outer peripheral wall 221, which is cylindrical with a second annular inner concave track 221a, and the second annular inner concave track 221a is radially opposite to the first annular outer concave track 212a. The plurality of balls 23 are sandwiched between the first annular outer concave track 212a of the deep groove ball bearing outer ring 21 and the second annular inner concave track 221a of the deep groove ball bearing inner ring 22, so that the deep groove ball bearing inner ring 22 can move relative to the deep groove ball bearing outer ring 21 in the form of rolling friction via the plurality of balls 23. The balls 23 are, for example, but not limited to, steel balls. Further, the plurality of balls 23 are arranged in a circle and are spaced apart from each other in the circumferential direction.

[0032] Specifically, in one example, referring to Figure 3 , the outer ring 31 of the joint bearing also has an inner peripheral wall 312 of the joint bearing outer ring, which is a part of the spherical surface. The joint bearing 3 also includes an inner ring 32 of the joint bearing and a plurality of sliding friction pairs 33. The inner ring 32 of the joint bearing is sleeved in the outer ring 31 of the joint bearing, and the inner ring 32 of the joint bearing is used for connection with the external connecting member 300. The inner ring 32 of the joint bearing also has an outer peripheral wall 321 of the joint bearing inner ring, which is a part of the spherical surface, and the outer peripheral wall 321 of the joint bearing inner ring is complementary to the inner peripheral wall 312 of the joint bearing outer ring in shape. The plurality of sliding friction pairs 33 are sandwiched between the inner peripheral wall 312 of the joint bearing outer ring and the outer peripheral wall 321 of the joint bearing inner ring, so that the inner ring 32 of the joint bearing can move relative to the outer ring 31 of the joint bearing in the form of spherical sliding friction via the plurality of sliding friction pairs 33.

[0033] Furthermore, the plurality of sliding friction pairs 33 are spaced apart from each other in the axial direction D2. Compared with a single sliding friction pair, the plurality of sliding friction pairs 33 are spaced apart from each other in the axial direction D2 while ensuring the normal function of the spherical bearing 3, and the material of the sliding friction pair can be reduced, especially when the sliding friction pair is replaced as a consumable, the material cost is more significantly reduced.

[0034] exist Figure 3 In the example, there are two sliding friction pairs 33 .

[0035] Reference Figures 1 to 3 The connecting rod 1 also has an upper surface 13 and a lower surface 14 opposite to each other in the axial direction D2; the upper surface 13 of the connecting rod 1 is lower than the upper end of the outer ring 21 of the deep groove ball bearing and lower than the upper end of the outer ring 31 of the spherical plain bearing; the lower surface 14 of the connecting rod 1 is higher than the lower end of the outer ring 21 of the deep groove ball bearing and higher than the lower end of the outer ring 31 of the spherical plain bearing. As a result, the tilting movement of the connecting member 300 connected to the spherical plain bearing 3 is not affected by the connecting rod 1.

[0036] Reference Figure 3 The connecting rod bearing 100 has a first center plane P1 perpendicular to the axial direction D2, and the connecting rod bearing 100 is a mirror-symmetrical structure relative to the first center plane P1. Therefore, the connecting rod bearing 100 is simple to manufacture and can be used upside down in the axial direction D2 when used, thereby improving the convenience of operation.

[0037] Reference Figure 2 The connecting rod bearing 100 has a second center plane P2 parallel to the axial direction D2, and the connecting rod bearing 100 is a mirror-symmetrical structure relative to the second center plane P2. Therefore, the connecting rod bearing 100 is simple to manufacture and can be used upside down in the axial direction D2 when used, thereby improving the convenience of operation.

[0038] The above detailed description is used to describe multiple exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form multiple additional combinations that are not shown for the sake of simplicity.

Claims

1. A connecting rod bearing, characterized in that: The connecting rod bearing (100) is a single piece with an integrated structure, comprising a connecting rod (1), a deep groove ball bearing (2) and a spherical bearing (3). The connecting rod (1) has a first end (11) and a second end (12) opposite to each other in the longitudinal direction (D1), The deep groove ball bearing (2) comprises a deep groove ball bearing outer ring (21), the deep groove ball bearing outer ring (21) has a deep groove ball bearing outer ring outer peripheral wall (211), and the deep groove ball bearing outer ring outer peripheral wall (211) is directly connected to the first end (11) of the connecting rod (1) and forms an integrated structure; The spherical bearing (3) comprises a spherical bearing outer ring (31), the spherical bearing outer ring (31) has a spherical bearing outer ring outer peripheral wall (311), and the spherical bearing outer ring outer peripheral wall (311) is directly connected to the second end (12) of the connecting rod (1) and forms an integrated structure.

2. The connecting rod bearing according to claim 1, characterized in that: The deep groove ball bearing outer ring (21) also has a deep groove ball bearing outer ring inner peripheral wall (212), and the deep groove ball bearing outer ring inner peripheral wall (212) is cylindrical with a first annular outer concave track (212a); The deep groove ball bearing (2) further comprises a deep groove ball bearing inner ring (22) and a plurality of spheres (23); The inner ring (22) of the deep groove ball bearing is sleeved inside the outer ring (21) of the deep groove ball bearing, and the inner ring (22) of the deep groove ball bearing is used for connection with an external connecting piece (200); The deep groove ball bearing inner ring (22) also has a deep groove ball bearing inner ring outer peripheral wall (221), and the deep groove ball bearing inner ring outer peripheral wall (221) is cylindrical and has a second annular inner concave track (221a), and the second annular inner concave track (221a) is opposite to the first annular outer concave track (212a) in the radial direction; The multiple balls (23) are sandwiched between a first annular outer concave track (212a) of the deep groove ball bearing outer ring (21) and a second annular inner concave track (221a) of the deep groove ball bearing inner ring (22), so that the deep groove ball bearing inner ring (22) can move relative to the deep groove ball bearing outer ring (21) in the form of rolling friction via the multiple balls (23).

3. The connecting rod bearing according to claim 2, characterized in that: The sphere (23) is a steel ball.

4. The connecting rod bearing according to claim 2, characterized in that: The plurality of balls (23) are arranged in a circle and are spaced apart from each other in the circumferential direction.

5. The connecting rod bearing according to claim 1, characterized in that: The spherical bearing outer ring (31) also has a spherical bearing outer ring inner peripheral wall (312), and the spherical bearing outer ring inner peripheral wall (312) is a part of the spherical surface; The spherical bearing (3) further comprises a spherical bearing inner ring (32) and a plurality of sliding friction pairs (33); The spherical bearing inner ring (32) is sleeved inside the spherical bearing outer ring (31), and the spherical bearing inner ring (32) is used for connecting with an external connecting member (300); The spherical bearing inner ring (32) also has a spherical bearing inner ring outer peripheral wall (321), the spherical bearing inner ring outer peripheral wall (321) is a part of the spherical surface, and the spherical bearing inner ring outer peripheral wall (321) and the spherical bearing outer ring inner peripheral wall (312) are complementary in shape; The multiple sliding friction pairs (33) are clamped between the inner peripheral wall (312) of the outer ring of the joint bearing and the outer peripheral wall (321) of the inner ring of the joint bearing, so that the inner ring (32) of the joint bearing can move relative to the outer ring (31) of the joint bearing in the form of spherical sliding friction via the multiple sliding friction pairs (33).

6. The connecting rod bearing according to claim 5, characterized in that: The plurality of sliding friction pairs (33) are spaced apart from each other in the axial direction (D2).

7. The connecting rod bearing according to claim 6, characterized in that: The number of the plurality of sliding friction pairs (33) is two.

8. The connecting rod bearing according to claim 1, characterized in that: The connecting rod (1) also has an upper surface (13) and a lower surface (14) opposite to each other in the axial direction (D2); The upper surface (13) of the connecting rod (1) is lower than the upper end of the outer ring (21) of the deep groove ball bearing and lower than the upper end of the outer ring (31) of the spherical plain bearing; The lower surface (14) of the connecting rod (1) is higher than the lower end of the outer ring (21) of the deep groove ball bearing and higher than the lower end of the outer ring (31) of the spherical plain bearing.

9. The connecting rod bearing according to claim 1, characterized in that: The connecting rod bearing (100) has a first center plane (P1) perpendicular to the axial direction (D2), and the connecting rod bearing (100) is a mirror-symmetrical structure relative to the first center plane (P1).

10. The connecting rod bearing according to claim 1, characterized in that: The connecting rod bearing (100) has a second center plane (P2) parallel to the axial direction (D2), and the connecting rod bearing (100) is a mirror-symmetrical structure relative to the second center plane (P2).

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