CN210370892U

CN210370892U - Automobile water pump

Info

Publication number: CN210370892U
Application number: CN201921514288.9U
Authority: CN
Inventors: 郭显强
Original assignee: Yuhuan Hongze Automobile Pump Co Ltd
Current assignee: Yuhuan Hongze Automobile Pump Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-04-21
Anticipated expiration: 2029-09-12

Abstract

The utility model provides an automobile water pump belongs to auto-parts technical field. The pump shaft of it having solved current automobile water pump is rotatory unstable, the relative motion wearing and tearing of first bearing, second bearing and pump body comparatively serious problem. The automobile water pump comprises a pump body, a pump shaft and an impeller, wherein the pump shaft and the impeller are arranged in the pump body, the impeller is fixed at the end part of the pump shaft, a first bearing and a second bearing which are axially distributed at intervals are arranged between the pump shaft and the pump body, the pump shaft is rotatably connected with the pump body through the first bearing and the second bearing, and an assembling abutting device which enables the first bearing and the second bearing to be axially and relatively positioned and abutted against the pump body is arranged between the first bearing and the second bearing at intervals. The utility model discloses simple structure, pump shaft rotational stability make things convenient for bearing one, bearing two to assemble in the pump body and this bearing one, bearing two and pump shaft assembly precision height in the pump body, can reduce relative motion wearing and tearing, the long service life of bearing one, bearing two and the pump body.

Description

Automobile water pump

Technical Field

The utility model belongs to the technical field of auto-parts, a car water pump is related to.

Background

In the cylinder body of the automobile engine, a plurality of water channels for cooling water circulation are arranged and connected with a radiator arranged at the front part of the automobile through water pipes to form a large water circulation system. A water pump is arranged at the upper water outlet of the engine and is driven by a fan belt to pump hot water out of a water channel of the engine cylinder body and pump cold water in the water channel.

The automobile engine widely adopts a centrifugal water pump, and the basic structure of the centrifugal water pump comprises a water pump body, a connecting disc or a belt pulley, a water pump shaft, a bearing, a water pump impeller, a sealing device and other parts. The automobile water pump is an important component of an automobile engine.

The existing automobile water pump is as follows: "201821992143.5" the automobile water pump, its concrete structure is: the pump shaft is rotationally connected with the pump body through a bearing, the bearing comprises a first bearing and a second bearing, a bushing is sleeved outside the pump shaft and is positioned between the first bearing and the second bearing, and two ends of the bushing are respectively abutted against an inner ring of the first bearing and an inner ring of the second bearing; the upper end outside the pump shaft is also sleeved with a retaining ring, the lower end outside the pump shaft is provided with an annular retaining shoulder, the retaining ring is axially retained on the outer ring of the first bearing, and the annular retaining shoulder is axially retained on the inner ring of the second bearing.

In the structure, the retainer ring, the first bearing, the bushing, the second bearing and the annular retaining shoulder are axially and sequentially and rigidly abutted; when the pump shaft rotates, the impeller absorbs water, the centrifugal dehydration is carried out, and the fan connected to the flange plate can generate axial force under the driving of the pump shaft, the axial force can drive the first bearing and the second bearing to axially float, and the relative motion of the first bearing, the second bearing and the pump body can cause mutual abrasion, so that the service life of the water pump is shortened; and the bush is positioned between the first bearing and the second bearing and does not have an axial positioning structure with the pump body, and the axial distance among the first bearing, the bush and the second bearing is longer, so that the pump shaft is easy to shake and wear in the pump body during high-speed rotation, and the service life of the pump shaft is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, pump shaft rotational stability and can also reduce relative motion wearing and tearing, long service life's of bearing one, bearing two and the pump body automobile water pump.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an automobile water pump, includes the pump body and sets up pump shaft, the impeller in the pump body, the impeller fix the tip at the pump shaft, pump shaft and the pump body between be provided with bearing one, bearing two that are axial interval distribution and this pump shaft pass through bearing one, bearing two and the pump body rotates to be connected, its characterized in that, bearing one and bearing two be provided with between the axial interval and make bearing one, bearing two axial relative positioning support and lean on the assembly support device in the pump body.

This automobile water pump mainly is provided with the assembly between bearing I and bearing II axial interval and supports and lean on the device, support the location through the assembly support and make bearing I and bearing II still support with the pump body axial when supporting and leaning on in the pump body axial interval distribution, the purpose that sets up like this enables the pump shaft between bearing I and bearing II with pump body axial support, the wearing and tearing that rocks appear when preventing the high-speed rotation of pump shaft, causes the pump shaft rotational stability, improves the life of pump shaft.

In foretell automobile water pump, the assembly support and lean on the device including setting up the stop collar in the pump body, the upper surface of stop collar set firmly rubber and support and lean on layer one, the lower surface of stop collar set firmly rubber and support and lean on layer two, the lower terminal surface of the outer lane of bearing one axial support lean on in rubber support and lean on layer one, the up end axial of the outer lane of bearing two support and lean on in rubber support and lean on layer two, stop collar and pump body between be provided with and make the stop collar be in the axial stop device in the pump body. The rubber supports and links firmly the upper surface at the stop collar through the mode of vulcanizing on the layer one, and this rubber supports and links firmly the lower surface at the stop collar through the mode of vulcanizing on the layer two, and the purpose that sets up like this is: when the pump shaft rotates, an axial force is generated, the axial force can drive the bearing I and the bearing II to axially float, and when the bearing I and the bearing II axially float, the rubber abutting layer I and the rubber abutting layer II are elastically deformed to have axial yielding intervals, so that the bearing I and the bearing II move relative to the pump body, mutual abrasion among the bearing I and the bearing II is reduced, and the service life is prolonged.

In foretell automobile water pump, axial stop device include spacing steel ball, the outer wall of stop collar on circumference interval distribution have be radial spacing blind hole that sets up, be provided with the spacing groove on the inner wall of the pump body relative with spacing blind hole axial, spacing steel ball be in spacing blind hole and with spacing blind hole elastic fit, when the stop collar with the axial set up in the pump body, and this spacing steel ball stretches out spacing blind hole through the elastic fit part with spacing blind hole and corresponds to support and lean on in the spacing inslot. The purpose of setting up like this makes stop collar and pump body axial relative positioning, and when the stop collar was fixed a position with pump body axial relative, the atress was even, stable in structure.

In foretell automobile water pump, spacing blind hole in activity wear to be equipped with the elastic rubber post, the preceding terminal surface of elastic rubber post have an arc wall, spacing steel ball when being in spacing blind hole, and this spacing steel ball supports and leans on in the arc wall of elastic rubber post. The elastic rubber column is made of elastic materials, the manufacturing density is low, elastic deformation can occur when the limiting steel balls are axially abutted, and the elastic rubber column is elastically reset when the limiting steel balls are positioned in the limiting grooves.

In the automobile water pump, the inner rings of the first bearing and the second bearing are axially and adaptively connected with the pump shaft, the outer rings of the first bearing and the second bearing are axially and adaptively connected with the pump body, and a positioning structure for preventing the pump shaft from axially shifting in the first bearing and the second bearing is arranged between the pump shaft and the first bearing and the second bearing. The purpose of setting up like this is convenient bearing one, bearing two assembles in the pump body, convenient to use.

In foretell automobile water pump, location structure include position sleeve and lower position sleeve, last position sleeve link firmly in the upper end of pump shaft, and should go up the position sleeve axial and support and lean on the up end in the inner circle of bearing one, lower position sleeve link firmly in the lower extreme of pump shaft, and should support and lean on the lower terminal surface in the inner circle of bearing two in the position sleeve axial down.

In the automobile water pump, two ends of the pump shaft extend out of the pump body, the impeller is fixed at the end part of the lower extending end of the pump shaft, and the end part of the upper extending end of the pump shaft is fixedly provided with the flange.

Compared with the prior art, this automobile water pump's advantage does: the pump shaft has the advantages of simple structure, stable rotation of the pump shaft, convenience for assembly of the first bearing and the second bearing in the pump body, high assembly precision of the first bearing, the second bearing and the pump shaft in the pump body, capability of reducing relative motion abrasion of the first bearing, the second bearing and the pump body, and long service life.

Drawings

Fig. 1 is a schematic sectional structure view of the water pump for an automobile.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a pump body; 2. a pump shaft; 3. an impeller; 4. a first bearing; 5. a second bearing; 6. a limiting sleeve; 7. a first rubber abutting layer; 8. a second rubber abutting layer; 9. limiting steel balls; 10. an elastic rubber column; 11. mounting a positioning sleeve; 12. a lower positioning sleeve; 13. a flange plate.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the automobile water pump mainly comprises a pump body 1, a pump shaft 2 and an impeller 3, wherein the pump shaft 2 and the impeller 3 are arranged in the pump body 1, the impeller 3 is fixed at the end part of the pump shaft 2, a first bearing 4 and a second bearing 5 which are axially distributed at intervals are arranged between the pump shaft 2 and the pump body 1, the pump shaft 2 is rotatably connected with the pump body 1 through the first bearing 4 and the second bearing 5, and an assembling abutting device which enables the first bearing 4 and the second bearing 5 to be axially and relatively positioned and abutted against the pump body 1 is arranged between the first bearing 4 and the second bearing 5 at intervals.

In actual manufacturing, the specific embodiments of the fitting abutting device are as follows: mainly by setting up the stop collar 6 constitution in the pump body 1, the upper surface of stop collar 6 has set firmly rubber and has supported to lean on layer one 7, the lower surface of stop collar 6 has set firmly rubber and has supported to lean on layer two 8, the lower terminal surface of the outer lane of bearing one 4 axial support lean on in rubber support lean on layer one 7, the up end axial of the outer lane of bearing two 5 support lean on in rubber support lean on layer two 8, be provided with the axial stop device that makes stop collar 6 be in the pump body 1 between the stop collar 6 and the pump body 1.

In actual manufacturing, the specific implementation mode of the axial limiting device is as follows: the pump mainly comprises limiting steel balls 9, radially arranged limiting blind holes are circumferentially distributed on the outer wall of a limiting sleeve 6 at intervals, a limiting groove is formed in the inner wall of the pump body 1 axially opposite to the limiting blind holes, the limiting steel balls 9 are positioned in the limiting blind holes and elastically matched with the limiting blind holes, and when the limiting sleeve 6 is coaxially arranged in the pump body 1, the limiting steel balls 9 extend out of the limiting blind holes through the elastic matching parts of the limiting steel balls 9 and are correspondingly abutted against the limiting grooves; elastic rubber column 10 is worn to be equipped with in the activity of spacing blind hole, and the preceding terminal surface of elastic rubber column 10 has the arc wall, and when spacing steel ball 9 was in spacing blind hole, and this spacing steel ball 9 supports and leans on in the arc wall of elastic rubber column 10.

In practical application, the inner rings of the first bearing 4 and the second bearing 5 are axially and adaptively connected with the pump shaft 2, the outer rings of the first bearing 4 and the second bearing 5 are axially and adaptively connected with the pump body 1, and a positioning structure for preventing the pump shaft 2 from axially shifting in the first bearing 4 and the second bearing 5 is arranged between the pump shaft 2 and the first bearing 4 and between the pump shaft 2 and the second bearing 5.

In actual manufacturing, the specific implementation of the positioning structure is as follows: the pump mainly comprises an upper locating sleeve 11 and a lower locating sleeve 12, wherein the upper locating sleeve 11 is fixedly connected to the upper end of the pump shaft 2, the upper locating sleeve 11 is axially abutted against the upper end face of the inner ring of the bearing I4, the lower locating sleeve 12 is fixedly connected to the lower end of the pump shaft 2, and the lower locating sleeve 12 is axially abutted against the lower end face of the inner ring of the bearing II 5.

In practical application, two ends of the pump shaft 2 extend out of the pump body 1, the impeller 3 is fixed at the end part of the lower extending end of the pump shaft 2, and the end part of the upper extending end of the pump shaft 2 is fixedly provided with the flange 13.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an automobile water pump, includes pump body (1) and sets up pump shaft (2), impeller (3) in pump body (1), impeller (3) fix the tip at pump shaft (2), pump shaft (2) and pump body (1) between be provided with bearing (4), bearing two (5) and this pump shaft (2) that are axial interval distribution and rotate with pump body (1) through bearing (4), bearing two (5) and be connected, its characterized in that, bearing (4) and bearing two (5) axial interval between be provided with and make bearing (4), bearing two (5) axial relative positioning support by the assembly support device in pump body (1).

2. The automobile water pump according to claim 1, wherein the assembling abutting device comprises a limiting sleeve (6) arranged in the pump body (1), a first rubber abutting layer (7) is fixedly arranged on the upper surface of the limiting sleeve (6), a second rubber abutting layer (8) is fixedly arranged on the lower surface of the limiting sleeve (6), the lower end surface of the outer ring of the first bearing (4) axially abuts against the first rubber abutting layer (7), the upper end surface of the outer ring of the second bearing (5) axially abuts against the second rubber abutting layer (8), and an axial limiting device which enables the limiting sleeve (6) to be located in the pump body (1) is arranged between the limiting sleeve (6) and the pump body (1).

3. The automobile water pump according to claim 2, wherein the axial limiting device comprises limiting steel balls (9), radially arranged limiting blind holes are circumferentially distributed on the outer wall of the limiting sleeve (6) at intervals, a limiting groove is formed in the inner wall of the pump body (1) axially opposite to the limiting blind holes, the limiting steel balls (9) are located in the limiting blind holes and elastically matched with the limiting blind holes, and when the limiting sleeve (6) is coaxially arranged in the pump body (1), the limiting steel balls (9) correspondingly abut against the limiting grooves through the limiting blind holes extending out of the elastic matching parts of the limiting blind holes.

4. The automobile water pump according to claim 3, characterized in that an elastic rubber column (10) is movably arranged in the limiting blind hole in a penetrating manner, an arc-shaped groove is formed in the front end face of the elastic rubber column (10), and when the limiting steel ball (9) is positioned in the limiting blind hole, the limiting steel ball (9) is abutted against the arc-shaped groove of the elastic rubber column (10).

5. The automobile water pump according to claim 4, characterized in that inner rings of the first bearing (4) and the second bearing (5) are axially and adaptively connected with the pump shaft (2), outer rings of the first bearing (4) and the second bearing (5) are axially and adaptively connected with the pump body (1), and a positioning structure for preventing the pump shaft (2) from axially shifting in the first bearing (4) and the second bearing (5) is arranged between the pump shaft (2) and the first bearing (4) and the second bearing (5).

6. The automobile water pump according to claim 5, characterized in that the positioning structure comprises an upper positioning sleeve (11) and a lower positioning sleeve (12), the upper positioning sleeve (11) is fixedly connected to the upper end of the pump shaft (2), the upper positioning sleeve (11) axially abuts against the upper end face of the inner ring of the first bearing (4), the lower positioning sleeve (12) is fixedly connected to the lower end of the pump shaft (2), and the lower positioning sleeve (12) axially abuts against the lower end face of the inner ring of the second bearing (5).

7. The automobile water pump according to claim 6, characterized in that both ends of the pump shaft (2) extend out of the pump body (1), the impeller (3) is fixed at the end of the lower extension end of the pump shaft (2), and the end of the upper extension end of the pump shaft (2) is fixedly provided with a flange (13).