Integrated thrust needle roller bearing

Abstract

The utility model discloses an integrated thrust needle roller bearing, and belongs to the field of bearing design and machining. The integrated needle roller thrust bearing comprises a retainer, a roller, a first gasket, a second gasket and an outer ring, a plurality of rollers are arranged on the retainer, an assembly of the retainer and the plurality of rollers is arranged between the first gasket and the second gasket, and outer rings are arranged on the peripheral sides of the first gasket and the second gasket and used for limiting the first gasket and the second gasket; the outer ring is provided with an outer ring opening. According to the integrated thrust needle roller bearing, integration of the thrust needle roller bearing is achieved, and the integrated thrust needle roller bearing has the advantages of being compact in structure, easy to assemble, high in precision, low in production cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing design processing technical field, concretely relates to a one-piece thrust needle bearing. BACKGROUND

[0002] Thrust needle bearing is a key component for bearing axial load, and is widely used in the field of transmission, especially in AT transmission (automatic transmission). Thrust needle bearing has the advantages of strong carrying capacity, compact structure and high working efficiency. Thrust needle bearing usually has two structures of split type and one-piece type. One-piece thrust needle bearing is usually composed of a whole of needle, retainer, gasket and other parts. The structure of each component is more compact, convenient to install and accurate in cooperation, and has obvious advantages.

[0003] At present, most of the one-piece thrust needle bearings on the market adopt steel retainers, and the two end gaskets and retainers are combined into a whole through the processes of bending and turning. Although this method improves the compactness of the bearing and the convenience of assembly to a certain extent, it increases the difficulty in the production process. First, steel is prone to deformation during heat treatment, especially after the structure is turned before heat treatment, which will cause serious deformation problem after heat treatment, resulting in failure of the bearing structure. In addition, due to the complexity and high technical requirements of this process, only a few bearing manufacturers in China can produce such one-piece bearings. Even some manufacturers also face the problems of high cost and unstable process, especially in large size (outer diameter more than 100mm) bearings, which are prone to quality problems such as lock failure.

[0004] Although the existing one-piece thrust needle bearing has advantages in some aspects, it is limited in production and use due to the problems of difficult manufacturing process, poor stability and high cost. Especially in the field of large size bearings, due to the risk of lock failure, reliability problems may occur during use, so there is an urgent need for a new one-piece thrust needle bearing design to solve these problems to meet the market demand. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problems of high cost, poor process and easy lock failure of large size bearings of the existing one-piece thrust needle bearing, the utility model provides a one-piece thrust needle bearing.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a one-piece thrust needle roller bearing, including retainer, roller, first gasket, second gasket and outer ring, be equipped with a plurality of rollers on the retainer, the total assembly of retainer and a plurality of rollers is arranged between the first gasket and the second gasket, and the outer ring is arranged on the outer circumferential side of the first gasket and the second gasket to provide limiting for the first gasket and the second gasket, and the outer ring opening is arranged on the outer ring.

[0008] As the further improvement of the utility model, the axial section of the outer ring is in the shape of M, so that the outer ring forms two limiting grooves, and the two limiting grooves provide radial limiting for the first gasket and the second gasket respectively.

[0009] As the further improvement of the utility model, the outer ring middle protrusion is in clearance fit with the retainer.

[0010] As the further improvement of the utility model, the assembly outer side of the outer ring of the first gasket and the second gasket is provided with a slope.

[0011] As the further improvement of the utility model, the opening distance of the outer ring opening is greater than or equal to 0.

[0012] As the further improvement of the utility model, a plurality of oil holes are arranged through the outer ring.

[0013] As the further improvement of the utility model, the inner ring is provided with a plurality of oil grooves, and the oil grooves are arc-shaped oil grooves.

[0014] As the further improvement of the utility model, the total thickness of the first gasket and the second gasket after assembly is greater than the thickness of the outer ring.

[0015] As the further improvement of the utility model, the outer ring is made of PTFE, nylon or cast iron.

[0016] As the further improvement of the utility model, the roller is made of bearing steel.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model can directly assemble the integrated design in the production process, without additional flanging, locking and other assembly operations, so that the assembly efficiency is improved, the working hours are reduced, and the quality problems such as integrated failure caused by deformation of the gasket flanging and locking after heat treatment can be avoided.

[0019] Further, the outer ring is provided with an M-shaped axial section, two limiting grooves are formed, and the outer rings of the two gaskets are provided with slopes, so that the total thickness of the assembled gaskets is greater than the thickness of the outer ring.

[0020] Further, the outer ring is provided with an M-shaped axial section, two limiting grooves are formed, and the outer rings of the two gaskets are provided with slopes, so that the total thickness of the assembled gaskets is greater than the thickness of the outer ring.

[0021] Further, the cage is provided with an oil groove, and the outer ring is provided with an oil hole, so that the heat dissipation and lubrication effect of the transmission is good. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 FIG. 1 is a structural schematic view of the integrated thrust needle bearing of the present application;

[0024] Figure 2 FIG. 2 is a sectional view of the integrated thrust needle bearing of the present application;

[0025] Figure 3 FIG. 3 is an enlarged view of position A of the integrated thrust needle bearing of the present application;

[0026] Figure 4 FIG. 4 is a schematic view of the outer ring of the integrated thrust needle bearing of the present application;

[0027] Figure 5 FIG. 5 is a schematic view of the cage of the integrated thrust needle bearing of the present application;

[0028] In the drawings: 1, cage; 2, roller; 3, first gasket; 4, second gasket; 5, outer ring; 6, oil groove; 7, oil hole; 8, outer ring opening. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that would be obtained by one of ordinary skill in the art without having inventive effort are within the scope of the application.

[0031] It should be noted that like numerals and letters refer to like items in the drawings, and thus once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0032] In the description of the embodiments of the application, it should be noted that if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the drawings shown, or the orientation or positional relationship of the product of the application when it is usually placed, and are only for the convenience of describing the application and simplifying the description, and thus cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "provided", "mounted", "connected", "linked" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0035] The application will be further described below in conjunction with the drawings:

[0036] For example, Figure 1 and Figure 5The exemplary embodiment of the present disclosure provides an integrated thrust needle bearing, comprising a cage 1, rollers 2, a first spacer 3, a second spacer 4 and an outer ring 5; the cage 1 is provided with a plurality of rollers 2, the assembly of the cage 1 and the plurality of rollers 2 is arranged between the first spacer 3 and the second spacer 4, and the outer ring 5 is arranged on the outer circumferential side of the first spacer 3 and the second spacer 4 to provide a limit for the first spacer 3 and the second spacer 4.

[0037] In some embodiments, the outer ring 5 is made of PTFE (polytetrafluoroethylene), nylon or cast iron, and the specific material is selected according to requirements; the outer ring 5 is made of PTFE and nylon, and can be formed by injection molding and machining; the outer ring 5 is made of cast iron, and can be formed by casting and machining; the first spacer 3 and the second spacer 4 are made of commonly used bearing spacer steel, the roller 2 is made of bearing steel, and the cage 1 is made of commonly used bearing cage material.

[0038] As shown in Figures 2-4 In some embodiments, the axial section of the outer ring 5 is in the shape of M, so that the outer ring 5 forms two limiting grooves, and the two limiting grooves provide radial limiting for the first spacer 3 and the second spacer 4, respectively; the outer ring 5 has a certain wall thickness on both sides; the assembly side of the outer ring of the first spacer 3 and the second spacer 4 is provided with a slope; the distance from the end of the slope of the first spacer 3 and the second spacer 4 close to the roller 2 to the center should be greater than the distance from the outer circumferential end of the roller 2 to the center, so as to avoid affecting the axial load bearing of the bearing; the middle protrusion of the outer ring 5 is in clearance fit with the cage 1, which facilitates the assembly of the bearing.

[0039] As shown in Figure 1 and Figure 4 In some embodiments, as shown in Figure 2 the outer ring 5 is provided with an outer ring opening 8, and the opening distance of the outer ring opening 8 is ≥0; when the opening distance of the outer ring opening 8 is 0, the outer ring opening 8 is a cut; the outer ring opening 8 is provided so that the outer ring 5 can expand outward during use, facilitating the assembly of various parts.

[0040] As shown in Figure 1 and Figure 5 In some embodiments, a plurality of oil holes 7 are arranged through the upper part of the outer ring 5, and a plurality of oil grooves 6 are arranged in the inner ring of the cage 1; the oil grooves 6 are arc-shaped oil grooves; the oil holes 7 and the oil grooves 6 are provided to facilitate the entry and exit of oil, so as to achieve cooling and lubrication; the position of the oil grooves 6 should avoid the position of the rollers 2 to prevent safety hazards caused by derailment of the rollers 2.

[0041] In some embodiments, the total thickness of the first spacer 3 and the second spacer 4 after assembly is greater than the thickness of the outer ring 5, so as to ensure that the outer ring 5 does not need to bear load during work, the load is concentrated on the spacers, and the normal operation of the bearing is ensured.

[0042] AsFigure 1 and Figure 2 The use method of the integrated thrust needle bearing provided by the utility model is shown in the figure, and comprises the following steps of:

[0043] The outer ring 5 is expanded, the first gasket 3 is installed in one limiting groove of the outer ring 5 in the direction shown in the figure, then the assembly of the retainer 1 and the roller 2 is installed, the second gasket 4 is installed in the other limiting groove of the outer ring 5, and the assembly of the thrust needle bearing is completed. Figure 2

[0044] The assembly of the thrust needle bearing is checked to avoid problems such as interference, incomplete assembly and rotation jamming, and the assembly of the thrust needle bearing that has passed the check is assembled in a suitable working condition to work.

[0045] In the traditional integrated thrust needle bearing, the gasket usually needs to be folded and locked to ensure the stability of the structure and the tightness of the assembly. The integrated thrust needle bearing of the utility model can assemble the thrust needle bearing through the parts such as the retainer 1, the roller 2, the first gasket 3, the second gasket 4 and the outer ring 5, without the need of folding and locking structure of the gasket, and without the need of a mold for keeping the folding and locking structure during heat treatment, so that the processing flow is simplified, the requirements for the mold and the equipment are reduced, the production cost is reduced, and the production efficiency is improved. Meanwhile, the gasket folding or locking in the traditional design is prone to deformation after heat treatment, and the integrated thrust needle bearing can avoid the risk of structural failure caused by deformation of the parts. Therefore, the integrated thrust needle bearing provided by the utility model has the advantages of compact structure, simple assembly and the like, and has a wide market application prospect.

[0046] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them. Although the utility model has been described in detail with reference to the above embodiments, the ordinary skilled in the art can still modify or equivalently replace the specific embodiments of the utility model, and any modification or equivalent replacement that does not deviate from the spirit and scope of the utility model is within the protection scope of the claims of the utility model.​

Claims

1. An integrated thrust needle bearing, characterized by, Including holder (1), roller (2), first gasket (3), second gasket (4) and outer ring (5);The holder (1) is provided with a plurality of rollers (2), the assembly of the holder (1) and a plurality of rollers (2) is provided between the first gasket (3) and the second gasket (4), the outer ring (5) is provided on the outer circumferential side of the first gasket (3) and the second gasket (4), and the first gasket (3) and the second gasket (4) are provided with limiting;Outer ring opening (8) is arranged on the outer ring (5).

2. A unit thrust needle bearing according to claim 1, wherein, The axial section of the outer ring (5) is M-shaped, so that the outer ring (5) forms two limiting grooves, and the two limiting grooves provide radial limiting for the first gasket (3) and the second gasket (4) respectively.

3. A unit thrust needle bearing according to claim 2, wherein, The middle protrusion of the outer ring (5) is gap-fitted with the holder (1).

4. A unit thrust needle bearing according to claim 2, wherein, The assembly outer side of the outer ring of the first gasket (3) and the second gasket (4) is provided with a slope.

5. A unit thrust needle bearing according to claim 1, wherein, The opening distance of the outer ring opening (8) is greater than or equal to 0.

6. A unit thrust needle bearing according to claim 1, wherein, A plurality of oil holes (7) are provided on the upper portion of the outer ring (5).

7. A unit thrust needle bearing according to claim 1, wherein, A plurality of oil grooves (6) are provided on the inner ring of the holder (1), and the oil grooves (6) are arc-shaped oil grooves.

8. A unit thrust needle bearing according to claim 1, wherein, The total thickness of the first gasket (3) and the second gasket (4) after assembly is greater than the thickness of the outer ring (5).

9. A unit thrust needle bearing according to claim 1, wherein, The outer ring (5) is made of PTFE, nylon or cast iron material.

10. The one-piece thrust needle bearing of claim 1, wherein, The roller (2) is made of bearing steel material.

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