A new type of spherical bearing

Abstract

A new type of joint bearing includes a spherical inner ring and a ball hole outer ring. The ball hole outer ring includes a body arranged on the outer ring, a spring sheet and a groove. Each of the spring sheets includes a connecting piece arranged on the outer side wall of the outer ring body and a spring sheet body. On a cross section perpendicular to the central axis of the outer ring body, the outer contour of each spring sheet is in a "Y" shape, and the outer contour of the spring sheet body is in an arc shape, and the center of the arc is set on the side facing away from the outer ring body. When the spring sheet body is in a free state, from the connection point between the spring sheet body and the connecting piece along the arc of the spring sheet body to the ends on both sides, the distance between the spring sheet body and the central axis of the outer ring body gradually increases, so that the ball hole outer ring is installed in the seat holes with different size tolerances with a clamping force to maintain stability. The new type of joint bearing is easy to install and has a stable connection, which reduces the difficulty of mechanical processing and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of spherical bearings, in particular to a novel spherical bearing. Background Art

[0002] Spherical bearings are generally used for low-speed swinging motion. Since the sliding surface is spherical, they can also make tilting motion within a certain angle range. When the non-concentricity between the supporting shaft and the shaft housing hole is large, they can still work normally. Spherical bearings are mainly composed of a spherical inner ring with an outer spherical surface and a spherical outer ring with an inner spherical surface.

[0003] Traditional spherical bearings are fixed to other parts through the ball hole outer ring. A seat hole is set on the part. In order to ensure the stable position of the spherical bearing on the seat hole of the other part, the seat hole on the part needs to have very high accuracy, which increases the difficulty of machining the ball hole outer ring and reduces production efficiency. In addition, the installation process of the spherical bearing is cumbersome and inconvenient. Summary of the invention

[0004] In view of this, the present invention provides a new type of spherical bearing that can be easily installed to meet industrial needs.

[0005] A new type of spherical bearing, which includes a spherical inner ring and a spherical outer ring sleeved on the outside of the spherical inner ring. The spherical outer ring includes an outer ring body, and at least three spring pieces and grooves arranged at intervals on the outer wall of the outer ring body. The spring pieces and the grooves are arranged around the central axis of the outer ring body as the center of the circle, and each of the spring pieces and the grooves are arranged along the axial direction of the outer ring body. One spring piece is arranged in each of the grooves. Each of the spring pieces includes a connecting piece arranged on the outer wall of the outer ring body and a spring piece body arranged on the connecting piece. On a cross section perpendicular to the central axis of the outer ring body, the outer contour of each spring piece is in a "Y" shape, and the outer contour of the spring piece body is in an arc shape, and the center of the arc is arranged on the side facing away from the outer ring body. When the spring sheet body is in a free state, the distance between the spring sheet body and the central axis of the outer ring body gradually increases from the connection point between the spring sheet body and the connecting piece along the arc of the spring sheet body to the ends on both sides, so that the outer ring of the ball hole can be installed in the seat holes with different size tolerances with a clamping force to maintain stability.

[0006] Furthermore, the spherical inner ring and the ball hole outer ring are both made of plastic.

[0007] Furthermore, the outer ring body and the spring sheet are integrally formed.

[0008] Furthermore, the distances between any two adjacent spring sheets and the grooves are equal.

[0009] Furthermore, in a cross section perpendicular to the central axis of the outer ring body, the length of the spring body is smaller than the length of the groove.

[0010] Furthermore, when the spring sheet body is in a free state, the minimum distance between the connection point between the spring sheet body and the connecting member and the central axis of the outer ring body is equal to the outer diameter of the outer ring body.

[0011] Furthermore, the spherical hole outer ring also includes an annular base arranged at one end of the outer ring body, and a plurality of through holes arranged on the annular base.

[0012] Furthermore, each of the through holes is interconnected with one of the grooves.

[0013] Furthermore, chamfers are provided at one end of each of the spring sheet bodies away from the annular base, and at one end edge of the outer ring body away from the annular base.

[0014] Compared with the prior art, the new joint bearing provided by the present invention is limited in the seat hole of other parts by at least three spring pieces arranged on the outer ring body. Each spring piece includes a connecting piece arranged on the outer side wall of the outer ring body and a spring piece body arranged on the connecting piece. The axial height of the spring piece limits the axial position of the outer ring body, and the spring piece body limits the radial position of the outer ring body, so that the precision requirement for the seat hole of the part is not very high, and when the ball hole outer ring is pressed into the seat hole of other parts, the spring piece will compensate for the seat hole deviation by its own elasticity, and when the seat hole size is different, the spring piece will freely adjust with the seat hole size, that is, when the outer ring body is pressed into the seat hole, the spring piece will compensate for the seat hole deviation by its own elasticity, so the spring piece does not have a very high requirement for the seat hole precision, and makes the position of the ball hole outer ring in the seat hole stable. It can be seen from this that the new joint bearing is easy to install and has stable connection, which reduces the difficulty of mechanical processing and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the novel spherical plain bearing provided by the present invention.

[0016] Figure 2 This is a schematic cross-sectional structural diagram of the novel spherical plain bearing provided by the present invention. DETAILED DESCRIPTION

[0017] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0018] like Figure 1 to Figure 2As shown, it is a schematic diagram of the structure of the new spherical bearing provided by the present invention. The new spherical bearing comprises a spherical inner ring 1 and a spherical outer ring 10 sleeved on the outer side of the spherical inner ring 1. The new spherical bearing also comprises some other functional modules, such as assembly components, etc., which should be well known to those skilled in the art and will not be described in detail here.

[0019] The spherical hole outer ring 10 includes an outer ring body 11, at least three spring pieces 12 and grooves 13 arranged at intervals on the outer side wall of the outer ring body 11, an annular base 14 arranged at one end of the outer ring body 11, and a plurality of through holes 15 arranged on the annular base 14. In addition, the spherical inner ring 1 and the spherical hole outer ring 10 are both made of plastic, so the spherical inner ring 1 and the spherical hole outer ring 10 are both elastic.

[0020] The outer ring body 11 is used to install the spherical inner ring 1, so that the spherical inner ring 1 can swing and tilt. The connection method between the spherical inner ring 1 and the outer ring body 11 is a prior art, which will not be repeated.

[0021] Each of the spring pieces 12 includes a connecting piece 121 disposed on the outer side wall of the outer ring body 11, and a spring piece body 122 disposed on the connecting piece 121. The spring pieces 12 and the grooves 13 are both disposed around the central axis of the outer ring body, and each of the spring pieces 12 and the grooves 13 are disposed along the axial direction of the outer ring body. On a cross section perpendicular to the central axis of the outer ring body 11, the outer contour of each of the spring pieces 12 is in a "Y" shape.

[0022] The connecting member 121 is connected to the outer ring body 11, so that the outer ring body 11 and the elastic sheet 12 are connected as one body. The outer ring body 11 and the elastic sheet 12 are integrally formed, so that the surface quality between the outer ring body 11 and the elastic sheet 20 is high, the molding accuracy is high, and the service life of the outer ring body 11 and the elastic sheet 12 is increased.

[0023] On the cross section perpendicular to the central axis of the outer ring body 11, the outer contour of the spring body 122 is all arc-shaped, and the center of the arc is set on the side facing away from the outer ring body. When the spring body 122 is in a free state, from the connection point between the spring body 122 and the connecting piece 121 along the arc of the spring body 122 to the ends on both sides, the distance between the spring body 122 and the central axis of the outer ring body 11 gradually increases, so that the ball hole outer ring 10 is installed in the seat hole with different size tolerances with a clamping force to maintain stability. In addition, when the spring body 122 is in a free state, the distance between the connection point between the spring body 122 and the connecting piece 121 and the central axis of the outer ring body 11 is equal to the outer diameter of the outer ring body 11, so that the ball hole outer ring 10 is stable during installation. It can be imagined that when the spring clip body 122 is inserted into the seat hole of other parts, and both ends of each spring clip body 122 away from the connecting piece 121 are bent toward the side close to the central axis of the outer ring body 11, and under the support of the connecting piece 121, the distance between the connection point between the spring clip body 122 and the connecting piece 121 and the central axis of the outer ring body 11 is always equal to the outer diameter of the outer ring body 11, so that when the spring clip body 122 is inserted into the seat hole of other parts, the outer side walls of the spring clip body 122 and the outer ring body 11 are in contact with the side wall of the seat hole to increase the stability of the ball hole outer ring 10 and prevent the ball hole outer ring 10 from shaking.

[0024] Since the ball hole outer ring 10 is made of plastic, it can be imagined that the spring piece 12 as a whole is also elastic and is an elastic mechanism. When the seat hole size is different, the spring piece 12 will be freely adjusted with the seat hole size. When pressed into the seat hole, the spring piece 12 will use its own elasticity to compensate for the seat hole deviation. Each end of the spring piece body 122 away from the annular base 14 and the end of the outer ring body 11 away from the annular base 14 are chamfered to facilitate the ball hole outer ring 10 in the seat hole of other parts. The distance between any two adjacent spring pieces 12 and the grooves 13 is equal, so that the spring pieces 12 and the grooves 13 are evenly arranged on the outer side wall of the outer ring body 11, and then the ball hole outer ring 10 is evenly stressed at each position during installation, so that the position of the ball hole outer ring 10 is stable.

[0025] Each of the grooves 13 is provided with a spring sheet 12. On a cross section perpendicular to the central axis of the outer ring body 11, the length of the spring sheet body 122 is less than the length of the groove 13, so that when the spring sheet body 122 is subjected to force, the two sides of the spring sheet body 122 are bent and accommodated in the groove 13. When the ball hole outer ring 10 is installed on the seat hole of other parts, the edge of the seat hole is accommodated in the groove 13, and the groove 13 plays a positioning effect and prevents the outer ring body 11 from rotating in the seat hole, so that the position of the ball hole outer ring 10 is stable. In addition, the spring sheet 12 cooperates with the groove 13, so that the edge of the seat hole of other parts is sandwiched between the spring sheet 12 and the groove 13, so as to ensure the stable installation of the outer ring body 11.

[0026] The annular base 14 is used to limit the position of the outer ring body 11. When the outer ring body 11 is installed on the seat hole of other parts, the annular base 14 abuts against the base of other parts, thereby limiting the position of the entire ball hole outer ring 10 to stabilize the position of the ball hole outer ring 10.

[0027] Each of the through holes 15 is interconnected with a groove 13, and the ball hole outer ring 10 is installed on the seat hole of other parts. The edge of the seat hole can be inserted into the through hole 15 along the groove 13, further increasing the stability of the ball hole outer ring 10.

[0028] When installing the ball hole outer ring 10, the spring sheet 12 is inserted into the seat hole of other parts to limit the position of the outer ring body 11. The two side edges of the spring sheet body 122 clamp the seat hole edge of the part between the spring sheet body 122 and the outer ring body 11, so that the axial height of the spring sheet 12 limits the axial position of the outer ring body 11, and the spring sheet body 122 limits the radial position of the outer ring body 11, and thus the precision requirement for the seat hole of the part is not very high. In addition, when the ball hole outer ring 10 is pressed into the seat hole of other parts, the spring sheet 12 will compensate for the seat hole deviation by its own elasticity, so the spring sheet 12 does not require very high seat hole precision, and makes the position of the ball hole outer ring 10 in the seat hole stable, avoiding the ball hole outer ring 10 and the seat holes on other parts from generating noise due to collision when the spherical inner ring 1 moves between the ball hole outer ring 10.

[0029] Compared with the prior art, the novel spherical bearing provided by the present invention is limited in the seat hole of other parts by arranging at least three spring pieces 12 on the outer ring body 11. Each spring piece 12 includes a connecting piece 121 arranged on the outer side wall of the outer ring body 11 and a spring piece body 122 arranged on the connecting piece 121. The axial height of the spring piece 12 limits the axial position of the outer ring body 11, and the spring piece body 122 limits the radial position of the outer ring body 11, so that the precision requirement of the seat hole of the part is not very high, and when the ball hole outer ring 10 is pressed into the seat hole of other parts, the spring piece 12 will compensate for the deviation of the seat hole by its own elasticity, and when the seat hole size is different, the spring piece 12 will be freely adjusted with the seat hole size, that is, when the outer ring body 11 is pressed into the seat hole, the spring piece 12 will compensate for the deviation of the seat hole by its own elasticity, so the spring piece 12 does not require the seat hole precision very much, and makes the position of the ball hole outer ring 10 in the seat hole stable. It can be seen from this that the novel spherical bearing is easy to install and has a stable connection, which reduces the difficulty of mechanical processing and improves production efficiency.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A novel spherical bearing, comprising a spherical inner ring, characterized in that: The novel joint bearing also includes a spherical hole outer ring sleeved on the outside of the spherical inner ring, the spherical hole outer ring includes an outer ring body, and at least three spring pieces and grooves arranged at intervals on the outer side wall of the outer ring body, the spring pieces and the grooves are arranged around the central axis of the outer ring body as the center of the circle, and each of the spring pieces and the grooves are arranged along the axial direction of the outer ring body, and each of the grooves is arranged in the axial direction of the outer ring body, and each of the spring pieces is arranged in the groove, each of the spring pieces includes a connecting piece arranged on the outer side wall of the outer ring body, and a spring piece body arranged on the connecting piece, and on a cross section perpendicular to the central axis of the outer ring body, each of the spring pieces The outer contours of the sheets are all in the shape of a "Y", and the outer contours of the spring sheet bodies are all in the shape of an arc, the center of the arc is set on the side facing away from the outer ring body, when the spring sheet body is in a free state, from the connection point between the spring sheet body and the connecting piece along the arc of the spring sheet body to the ends on both sides, the distance between the spring sheet body and the central axis of the outer ring body gradually increases, so that the ball hole outer ring is installed in the seat holes with different size tolerances with a clamping force to maintain stability, the distances between any two adjacent spring sheets and the grooves are equal, and on the cross section perpendicular to the central axis of the outer ring body, the length of the spring sheet body is less than the length of the groove.

2. The novel spherical plain bearing according to claim 1, characterized in that: The spherical inner ring and the ball hole outer ring are both made of plastic.

3. The new spherical plain bearing according to claim 1, characterized in that: The outer ring body and the spring sheet are integrally formed.

4. The new spherical plain bearing according to claim 1 is characterized in that: When the spring sheet body is in a free state, the minimum distance between the connection point between the spring sheet body and the connecting member and the central axis of the outer ring body is equal to the outer diameter of the outer ring body.

5. The novel spherical plain bearing according to claim 1 is characterized in that: The spherical hole outer ring also includes an annular base arranged at one end of the outer ring body, and a plurality of through holes arranged on the annular base.

6. The novel spherical plain bearing according to claim 5, characterized in that: Each of the through holes is communicated with one of the grooves.

7. The novel spherical plain bearing according to claim 5, characterized in that: Chamfers are arranged at one end of each of the spring sheet bodies away from the annular base, and at one end edge of the outer ring body away from the annular base.

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