Graphite bearing of automobile coolant pump

Abstract

The utility model belongs to the technical field of graphite bearings, and particularly relates to a graphite bearing of an automobile coolant pump, which comprises a tubular graphite piece and further comprises an outer ring, an inner ring and an inner ring, the check ring is fixed at the end part of the inner side surface of the outer ring and is used for limiting the tubular graphite piece; the blanking cap is fixed to the end, away from the check ring, of the outer ring and used for being matched with the check ring to clamp the tubular graphite piece; according to the graphite bearing, the outer ring is used for keeping the structural form of the tubular graphite piece, meanwhile, the good guiding effect is achieved, the installation safety of the graphite bearing is guaranteed, accidents are effectively avoided, the operation safety of the automobile cooling liquid pump is guaranteed, meanwhile, the stability of the tubular graphite piece can be further improved, and the service life of the tubular graphite piece is prolonged. Unnecessary damage caused by friction or shaking is reduced, and the service life of the tubular graphite piece is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to graphite bearing technical field, concretely relates to a graphite bearing of automobile cooling liquid pump. BACKGROUND

[0002] Graphite bearing is a kind of bearing with graphite material as main component, mainly plays the role of supporting rotating shaft in mechanical equipment, for example, in automobile cooling liquid pump, graphite bearing is installed inside pump body, supports pump shaft, and automobile cooling liquid pump works, motor drives pump shaft to rotate, and graphite bearing supports pump shaft, so that pump shaft can stably rotate, since graphite bearing has self-lubricating, the relative sliding between graphite layers can reduce the friction between pump shaft and bearing during rotation, simultaneously, the good heat conductivity of graphite bearing can rapidly dissipate the heat generated by pump shaft rotation, guarantees the normal operation of cooling liquid pump.

[0003] Currently, when installing graphite bearing, direct pressing method is usually adopted, that is, using pressing equipment to press graphite bearing into bearing seat and to be pressed and assembled with the pump shaft of automobile cooling liquid pump.

[0004] However, although the prior art can complete the installation of graphite bearing, the safety is low, mainly because the graphite bearing of automobile cooling liquid pump has a certain length, and the guiding performance in the pressing process is poor, graphite bearing is easily damaged or deviated, the normal work of automobile cooling liquid pump is affected, and the damage rate is high.

[0005] To solve the above problems, the utility model provides a graphite bearing of automobile cooling liquid pump. CONTENT OF UTILITY MODEL

[0006] To solve the above problems in the prior art, the utility model provides a graphite bearing of automobile cooling liquid pump, which has the characteristics of convenient use and high safety performance.

[0007] To achieve the above object, the utility model provides the following technical scheme: a graphite bearing of automobile cooling liquid pump, including tubular graphite piece, further including:

[0008] Outer ring, the tubular graphite piece is fixed in the outer ring;

[0009] Retainer, the retainer is fixed to the inner side end of the outer ring, and is used for limiting the tubular graphite piece;

[0010] Plug cover, the plug cover is fixed to the end of the outer ring away from the retainer, and is used for clamping the tubular graphite piece in cooperation with the retainer.

[0011] As a preferred technical scheme of the utility model, the outer wall of the tubular graphite piece is closely attached to the inner wall of the outer ring.

[0012] As a preferred technical scheme of the utility model, further comprising:

[0013] The headless screw is screwed into the internal thread groove in the threaded rotation mode after penetrating the first reserved counterbore.

[0014] As a preferred technical scheme of the utility model, further comprising:

[0015] The first rubber sealing ring is located between the tubular graphite member and the plug cover.

[0016] As a preferred technical scheme of the utility model, a plurality of second reserved counterbores are formed on the plug cover and are equally spaced in the circumferential direction, for fixing the plug cover in the automobile coolant pump by screws.

[0017] As a preferred technical scheme of the utility model, further comprising:

[0018] The second rubber sealing ring is adhesively fixed to one end of the plug cover facing the tubular graphite member.

[0019] As a preferred technical scheme of the utility model, further comprising:

[0020] The positioning ribs are equally spaced in the circumferential direction and are fixed to the inner wall of the outer ring, and the outer wall of the tubular graphite member is provided with positioning grooves for embedding the positioning ribs.

[0021] As a preferred technical scheme of the utility model, a guide slope is formed on one end of the outer ring.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] In the utility model, the outer ring is used to maintain the structural form of the tubular graphite member, has a good guiding effect, ensures the safety of the graphite bearing installation, effectively avoids the occurrence of unexpected situations, ensures the safety of the operation of the automobile coolant pump, further improves the stability of the tubular graphite member, reduces unnecessary damage caused by friction or shaking, and prolongs the service life of the tubular graphite member.

[0024] Other additional advantages and beneficial effects of the utility model will be partially given in the following description, will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present application, and form a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0026] Figure 1 is a structural schematic view of the present application;

[0027] Figure 2 is a structural schematic view of the side section of the present application;

[0028] Figure 3 is an enlarged structural schematic view of A in the present application Figure 2

[0029] Figure 4 is a structural schematic view of the front section of the present application.

[0030] In the drawing: 1, tubular graphite part; 11, inner thread groove; 12, positioning groove; 2, outer ring; 21, guide inclined surface; 22, retaining ring; 23, positioning convex strip; 3, plug cover; 31, No. 1 reserved counterbore; 32, No. 2 reserved counterbore; 4, countersunk screw; 5, No. 1 rubber sealing ring; 6, No. 2 rubber sealing ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-4 The present application provides the following technical solutions: an automobile coolant pump graphite bearing, comprising a tubular graphite part 1, further comprising: an outer ring 2, a retaining ring 22 and a plug cover 3.

[0033] Further, by Figure 1 and Figure 2 ​As shown, in the embodiment, the tubular graphite part 1 is fixed in the outer ring 2, the retaining ring 22 is fixed to the inner side end of the outer ring 2, and is used to limit the tubular graphite part 1, and the plug 3 is fixed to the end of the outer ring 2 away from the retaining ring 22, and is used to clamp the tubular graphite part 1 with the retaining ring 22. After the above scheme is used, in use, the tubular graphite part 1 is first pressed into the outer ring 2, the pressing position of the tubular graphite part 1 is positioned by the retaining ring 22, then the plug 3 is fixed to the end of the outer ring 2 away from the retaining ring 22, and the tubular graphite part 1 is clamped with the retaining ring 22, so as to ensure the stability of the tubular graphite part 1, and then the combination is fixed in the automobile coolant pump, the pump shaft passes through the inner hole of the tubular graphite part 1, and the automobile coolant pump drives the pump shaft to rotate in the inner hole of the tubular graphite part 1 when working. The outer ring 2 is arranged to maintain the structure of the tubular graphite part 1, has a better guiding effect, ensures the safety of the graphite bearing installation, effectively avoids the occurrence of unexpected conditions, ensures the safety of the automobile coolant pump operation, can further improve the stability of the tubular graphite part 1, reduces unnecessary damage caused by friction or shaking, and prolongs the service life of the tubular graphite part 1.

[0034] It should be noted that the outer ring 2 can be made of a metal material such as stainless steel, copper alloy, etc. and is formed by casting, forging or machining. The inner and outer surfaces of the outer ring 2 are smooth cylindrical surfaces, and the surface roughness can be set to be between Ra1.6-Ra3.2 (or slightly larger than this value) according to different application requirements, so as to be well matched with the mounting hole (or other fixed objects such as bearing seat) of the automobile coolant pump.

[0035] In addition, for the tubular graphite part 1, in addition to the above-mentioned disclosure, in actual processing, the tubular graphite part 1 can be pressed in the outer ring 2 by a powder metallurgy process, and then sintered at high temperature to firmly combine the tubular graphite part 1 with the outer ring 2.

[0036] Preferably, the outer diameter of the tubular graphite part 1 is slightly larger than the inner diameter of the outer ring 2. Figure 1 and Figure 2 As shown, in the embodiment, the outer wall of the tubular graphite part 1 is tightly fitted with the inner wall of the outer ring 2. After the above scheme is used, in use, this tight fitting mode can greatly improve the stability of the combination of the tubular graphite part 1 and the outer ring 2, ensure the stability of the graphite bearing, reduce unnecessary damage caused by friction or shaking, and effectively reduce the working noise of the automobile coolant pump.

[0037] It should be noted that the above design is only for the ideal working state of normal design, but it is generally difficult to achieve this ideal state in actual design. Therefore, the outer diameter of the tubular graphite part 1 is generally slightly larger than the inner diameter of the outer ring 2, that is, the tubular graphite part 1 is in interference fit with the outer ring 2, so as to ensure the firm combination of the tubular graphite part 1 and the outer ring 2.

[0038] In addition, the diameter of the pump shaft is slightly smaller than the inner diameter of the tubular graphite member 1 to ensure good contact and rotation performance with the tubular graphite member 1.

[0039] Optionally, as shown in Figures 1-3 In the embodiment, a plurality of No. 1 reserved countersunk holes 31 are formed on the plug cap 3 in the circumferential direction at equal intervals, an internal thread groove 11 is formed on one end of the tubular graphite member 1, and the countersunk head screw 4 is screwed into the internal thread groove 11 through the No. 1 reserved countersunk hole 31. After using the above scheme, the plug cap 3 is fixedly connected with the tubular graphite member 1 by the countersunk head screw 4 during use, which is stable and convenient, and also facilitates the disassembly and replacement of the damaged plug cap 3.

[0040] Preferably, as shown in Figures 1-3 In the embodiment, a No. 1 rubber sealing ring 5 is located between the tubular graphite member 1 and the plug cap 3. After using the above scheme, the No. 1 rubber sealing ring 5 is squeezed and shrunk after the installation of the plug cap 3, which improves the sealing performance of the plug cap 3 installation, thereby improving the waterproof performance of the graphite bearing and avoiding unnecessary damage caused by the contact of the cooling liquid with the tubular graphite member 1.

[0041] Optionally, as shown in Figures 1-3 In the embodiment, a plurality of No. 2 reserved countersunk holes 32 are formed on the plug cap 3 in the circumferential direction at equal intervals for fixing the plug cap 3 in the automobile cooling liquid pump by screws. After using the above scheme, the plug cap 3 can be further reinforced by screws after the graphite bearing is press-fitted, thereby further improving the stability of the graphite bearing installation.

[0042] Preferably, as shown in Figures 1-3 In the embodiment, a No. 2 rubber sealing ring 6 is fixedly bonded to one end of the plug cap 3 facing the tubular graphite member 1. After using the above scheme, the No. 2 rubber sealing ring 6 is beneficial to further improve the sealing performance of the graphite bearing installation.

[0043] Preferably, as shown in Figure 1 and Figure 4 In the embodiment, a plurality of positioning protrusions 23 are fixedly arranged on the inner wall of the outer ring 2 in the circumferential direction at equal intervals, and a positioning groove 12 is formed on the outer wall of the tubular graphite member 1 for embedding the positioning protrusions 23. After using the above scheme, the positioning protrusions 23 are embedded in the positioning groove 12 during use, which further effectively positions the connection between the tubular graphite member 1 and the outer ring 2, and further improves the firmness of the connection between the tubular graphite member 1 and the outer ring 2.

[0044] Preferably, as shown in Figure 1As shown, in the embodiment, a guide inclined surface 21 is machined at one end of the outer ring 2, and after the above scheme is adopted, in use, the design of the guide inclined surface 21 helps to effectively guide the installation of the graphite bearing, and reduces the friction and interference during installation.

[0045] The components not described in detail herein are prior art.

[0046] The working principle and use process of the utility model of the present application are as follows: in use, the tubular graphite part 1 is first pressed into the outer ring 2, and the pressing position of the tubular graphite part 1 is positioned by the check ring 22;

[0047] Then, the plug cover 3 is fixed at the end of the outer ring 2 away from the check ring 22, and the check ring 22 clamps the tubular graphite part 1, ensuring the stability of the tubular graphite part 1;

[0048] Then, the combination is fixed in the automobile coolant pump, the pump shaft passes through the inner hole of the tubular graphite part 1, and the automobile coolant pump drives the pump shaft to rotate in the inner hole of the tubular graphite part 1 when working;

[0049] The utility model of the present application has the advantages that the outer ring 2 is used to maintain the structural form of the tubular graphite part 1, has a better guiding effect, ensures the safety of the graphite bearing installation, effectively avoids the occurrence of unexpected situations, ensures the safety of the operation of the automobile coolant pump, further improves the stability of the tubular graphite part 1, reduces unnecessary damage caused by friction or shaking, and prolongs the service life of the tubular graphite part 1;

[0050] In another aspect of the utility model, a guide inclined surface 21 is machined at one end of the outer ring 2, and the design of the guide inclined surface 21 helps to effectively guide the installation of the graphite bearing, and reduces the friction and interference during installation.

[0051] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A graphite bearing for an automotive coolant pump comprising a tubular graphite piece (1), characterized in that, Also include: The tubular graphite piece (1) is fixed in the outer ring (2); The baffle ring (22) is fixed to the inner side end of the outer ring (2), which is used to limit the tubular graphite piece (1); The plug cover (3) is fixed to one end of the outer ring (2) away from the baffle ring (22), which is used to clamp the tubular graphite piece (1) with the baffle ring (22).

2. The graphite bearing for an automotive coolant pump of claim 1, wherein: The outer wall of the tubular graphite piece (1) is closely attached to the inner wall of the outer ring (2).

3. The graphite bearing for an automotive coolant pump of claim 1, wherein: Also include: The plug cover (3) is fixed to one end of the outer ring (2) away from the baffle ring (22), which is used to clamp the tubular graphite piece (1) with the baffle ring (22).

4. The graphite bearing for an automotive coolant pump of claim 1, wherein: A number of No. 1 reserved countersunk holes (31) are distributed along the circumferential direction on the plug cover (3), and an internal thread groove (11) is processed on one end of the tubular graphite piece (1). The flat head screw (4) is screwed into the internal thread groove (11) through the No. 1 reserved countersunk hole (31) by screwing. Also include:

5. The graphite bearing for an automotive coolant pump of claim 1, wherein: The No. 1 rubber sealing ring (5) is located between the tubular graphite piece (1) and the plug cover (3).

6. The graphite bearing for an automotive coolant pump of claim 1, wherein: A number of No. 2 reserved countersunk holes (32) are distributed along the circumferential direction on the plug cover (3), which are used to be fixed in the automobile cooling liquid pump by using screws. Also include:

7. The graphite bearing for an automotive coolant pump of claim 1, wherein: The No. 2 rubber sealing ring (6) is adhesively fixed to one end of the plug cover (3) facing the tubular graphite piece (1). Also include:

8. The graphite bearing for an automotive coolant pump of claim 1, wherein: The positioning convex strip (23) is fixed to the inner wall of the outer ring (2) along the circumferential direction, and the positioning groove (12) is processed on the outer wall of the tubular graphite piece (1) for the positioning convex strip (23) to embed. The guide inclined surface (21) is processed on one end of the outer ring (2).

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