CN218498895U

CN218498895U - Water pump rotor shaft and bearing sliding fit structure

Info

Publication number: CN218498895U
Application number: CN202222435931.7U
Authority: CN
Inventors: 邓伟建; 程鑫; 黄涛; 韩屏; 陈强; 李唯
Original assignee: Wuhan Zhiqu Power Technology Co ltd
Current assignee: Wuhan Zhiqu Power Technology Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-02-17
Anticipated expiration: 2032-09-13

Abstract

The utility model discloses a sliding fit structure of a water pump rotor shaft and a bearing, which comprises a top cover, an upper shell and a hollow middle shell in sequence; the contact surface of the upper shell and the top cover is inwards sunken, the top cover is inserted into the upper shell and matched with the upper shell to form a closed bin, an inner circular truncated cone is arranged on the inner surface of the upper shell, a bearing groove is formed in the inner circular truncated cone, an integrally formed rotor assembly is arranged in the middle shell and comprises a rotor shaft, one end of the rotor shaft is arranged in the bearing groove, the other end of the rotor shaft penetrates through a bearing channel of the middle shell and extends out of the middle shell, and a rotor core, a limiting ring piece and a rotating column are arranged outside the rotor shaft from one end to the other end; and a wear-resistant bearing is arranged in the bearing channel and is matched with the rotating column to move. The utility model discloses a bearing groove design will with bearing sliding friction surface direct design on the rotor shaft, reduced assembly part and whole product design part, done very big optimal design to whole product.

Description

Water pump rotor shaft and bearing sliding fit structure

Technical Field

The utility model relates to an automobile engine cooling field, concretely relates to water pump rotor shaft and bearing sliding fit structure.

Background

The existing water pump product is designed by sliding friction of a bearing and a ring piece made of wear-resistant materials, and resistance can be caused to rotation in order to prevent surface tension from being formed between the bearing and the ring piece, so that a groove at one end of a plane can be designed between the ring piece and the bearing. At present, grooves are designed on ring plates, the end faces of bearings are flat, the design can increase two parts of the whole product, and assembly steps are increased.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide a water pump rotor shaft and bearing sliding fit structure.

In order to achieve the purpose, the utility model designs a sliding fit structure of a water pump rotor shaft and a bearing, which comprises a top cover, an upper shell and a hollow middle shell in sequence; the contact surface of the upper shell and the top cover is inwards sunken, the top cover is inserted into the upper shell and matched with the upper shell to form a closed bin, an inner circular truncated cone is arranged on the inner surface of the upper shell, a bearing groove is formed in the inner circular truncated cone, an integrally formed rotor assembly is arranged in the middle shell and comprises a rotor shaft, one end of the rotor shaft is arranged in the bearing groove, the other end of the rotor shaft penetrates through a bearing channel of the middle shell and extends out of the middle shell, and a rotor core, a limiting ring sheet and a rotating column are arranged from one end to the other end outside the rotor shaft;

the bearing channel is internally provided with a wear-resistant bearing, the wear-resistant bearing moves in a matched manner with the rotating column, the wear-resistant bearing comprises a cylindrical bearing, the end part of the cylindrical bearing extends outwards and horizontally to form a bearing end face, the bearing end face is in matched contact with the limiting ring piece, and a plurality of grooves are formed in the surface of the bearing end face at intervals.

Furthermore, an inserting opening is formed in the outer wall of the upper shell outside the closed bin.

Still further, the top surface of the middle shell is recessed inwards to form an outer mounting groove.

And furthermore, a mounting platform is arranged on the outer wall of the middle shell, and mounting holes are formed in the mounting platform.

Still further, a bearing is arranged in the bearing groove, and the end part of the rotor shaft moves in a matched manner with the bearing.

The principle of the utility model is as follows:

when the water pump during operation, rotor subassembly axle terminal surface can with bearing end surface sliding friction, and the bearing end surface is fluted, has liquid to pass through the recess and flows for bearing end surface and rotor subassembly axle terminal surface can not hold because of the surface tension of liquid when the terminal surface slides, thereby do not influence the performance of water pump. Meanwhile, two parts are reduced, the assembly of the two parts and the assembly between the two parts and the rotor assembly are also reduced, and the whole product assembly process time is shortened.

The utility model has the advantages that:

the utility model discloses a bearing groove design will with bearing sliding friction surface direct design on the rotor shaft, reduced assembly part and whole product design part, done very big optimal design to whole product.

Drawings

FIG. 1 is a perspective view of a sliding fit structure of a water pump rotor shaft and a bearing;

FIG. 2 is a cross-sectional view of a water pump rotor shaft and bearing slip fit arrangement;

FIG. 3 is a perspective view of a wear bearing;

in the figure, a top cover 1, an upper shell 2, an inner circular table 2.1, a bearing groove 2.2, a middle shell 3, an outer mounting groove 3.1, a mounting platform 3.2, a mounting hole 3.3, a rotor assembly 4, a rotor shaft 4.1, a rotor core 4.2, a limiting ring piece 4.3, a limiting ring piece 4, a rotating column 4.4, a closed bin 5, a wear-resistant bearing 6, a cylindrical bearing 6.1, a bearing end surface 6.2, a groove 6.3 and a bearing 7.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments for the understanding of those skilled in the art.

The structure of the sliding fit of the water pump rotor shaft and the bearing as shown in fig. 1-3 sequentially comprises a top cover 1, an upper shell 2 and a hollow middle shell 3; the contact surface of the upper shell 2 and the top cover 1 is inwards sunken, the top cover 1 is inserted into the upper shell 2 and matched with the upper shell 2 to form a closed bin 5, and the outer wall of the upper shell 2 outside the closed bin 5 is provided with a socket; the inner surface of the upper shell 2 is provided with an inner circular truncated cone 2.1, the inner circular truncated cone 2.1 is provided with a bearing groove 2.2, the middle shell 3 is internally provided with an integrally formed rotor assembly 4, the rotor assembly 4 comprises a rotor shaft 4.1, one end of the rotor shaft 4.1 is arranged in the bearing groove 2.2, the other end of the rotor shaft 4.1 penetrates through a bearing channel of the middle shell 3 and extends out of the middle shell 3, and the top surface of the middle shell 3 is inwards sunken to form an outer mounting groove 3.1; the outer wall of the middle shell 3 is provided with a mounting platform 3.2, and the mounting platform 3.2 is provided with a mounting hole 3.3;

a bearing 7 is arranged in the bearing groove 2.2, and the end part of the rotor shaft 4.1 is matched with the bearing 7 to move; a rotor iron core 4.2, a limit ring piece 4.3 and a rotating column 4.4 are arranged outside the rotor shaft 4.1 from one end to the other end;

be provided with wear-resisting bearing 6 in the bearing passageway, wear-resisting bearing 6 and column spinner 4.4 cooperation motion, wear-resisting bearing 6 includes cylindrical bearing 6.1, and the outside level of cylindrical bearing 6.1 tip extends and forms bearing end face 6.2, and bearing end face 6.2 and spacing ring piece cooperation contact, bearing end face 6.2 surface interval are equipped with a plurality of recesses 6.4.

A bearing 7 is arranged in the bearing groove 2.2, and the end part of the rotor shaft 4.1 moves in a matching way with the bearing 7.

Other parts not described in detail are prior art. Although the above embodiments have been described in detail, it is only a part of the embodiments of the present invention, and not all embodiments, and other embodiments can be obtained without inventive step according to the present embodiments, and all embodiments belong to the protection scope of the present invention.

Claims

1. The utility model provides a water pump rotor shaft and bearing sliding fit structure which characterized in that: the device sequentially comprises a top cover (1), an upper shell (2) and a hollow middle shell (3); the upper shell (2) and the top cover (1) are in contact with each other and are inwards recessed, the top cover (1) is inserted into the upper shell (2) and is matched with the upper shell (2) to form a closed bin (5), an inner circular truncated cone (2.1) is arranged on the inner surface of the upper shell (2), a bearing groove (2.2) is formed in the inner circular truncated cone (2.1), an integrally-formed rotor assembly (4) is arranged in the middle shell (3), the rotor assembly (4) comprises a rotor shaft (4.1), one end of the rotor shaft (4.1) is arranged in the bearing groove (2.2), the other end of the rotor shaft (4.1) penetrates through a bearing channel of the middle shell (3) and extends out of the middle shell (3), and a rotor core (4.2), a limiting ring piece (4.3) and a rotating column (4.4) are arranged from one end to the other end outside the rotor shaft (4.1);

be provided with wear-resisting bearing (6) in the bearing passageway, wear-resisting bearing (6) and column spinner (4.4) cooperation motion, wear-resisting bearing (6) include cylindrical bearing (6.1), the outside horizontal extension of cylindrical bearing (6.1) tip forms bearing face (6.2), bearing face (6.2) and spacing ring piece cooperation contact, bearing face (6.2) surface interval is equipped with a plurality of recesses (6.3).

2. The structure of the rotor shaft and the bearing of the water pump in sliding fit according to claim 1, wherein: the outer wall of the upper shell (2) outside the closed bin (5) is provided with a socket.

3. The structure of the rotor shaft and the bearing of the water pump in sliding fit according to claim 2, characterized in that: the top surface of the middle shell (3) is inwards sunken to form an outer mounting groove (3.1).

4. The structure of the rotor shaft and the bearing of the water pump in sliding fit according to claim 2, characterized in that: the outer wall of the middle shell (3) is provided with a mounting platform (3.2), and the mounting platform (3.2) is provided with a mounting hole (3.3).

5. The structure of the rotor shaft and the bearing of the water pump in sliding fit according to claim 2, characterized in that: and a bearing (7) is arranged in the bearing groove (2.2), and the end part of the rotor shaft (4.1) moves in a matching way with the bearing (7).