CN220227156U - Oil pump assembly easy to assemble - Google Patents
Oil pump assembly easy to assemble Download PDFInfo
- Publication number
- CN220227156U CN220227156U CN202321733728.6U CN202321733728U CN220227156U CN 220227156 U CN220227156 U CN 220227156U CN 202321733728 U CN202321733728 U CN 202321733728U CN 220227156 U CN220227156 U CN 220227156U
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- shell
- plunger pump
- limiting
- easy
- peripheral surface
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000009826 distribution Methods 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract description 4
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses an oil pump assembly easy to assemble, which comprises a plunger pump and a shell, wherein the outer peripheral surface of the plunger pump is cylindrical; the inside of the shell is provided with a mounting groove for accommodating the plunger pump, and one end of the shell is provided with a liquid inlet and a liquid outlet which are communicated with the plunger pump; the outer peripheral surface of the plunger pump and the inner surface of the mounting groove are provided with positioning structures matched with each other, so that the axial and circumferential relative positions of the plunger pump and the shell are unique. According to the oil pump assembly easy to assemble, the positioning structure is arranged between the plunger pump and the shell, the oil port for butt joint of the plunger pump and the shell is quickly found through simple positioning, the assembly speed is high, and the precision is high.
Description
Technical Field
The utility model relates to the technical field of automobile parts, in particular to an oil pump assembly easy to assemble.
Background
With the current full-scale development of the manufacturing industry, more and more places need to use plunger pumps. For example, in the brake oil path of an automobile, a corresponding oil pump assembly is required, and the oil pump assembly comprises a plunger pump and a shell for mounting the plunger pump.
Plunger pump structure that uses in the market is various, and the shell has the plunger pump of dysmorphism or regular shape, and the external structure of present regular shape plunger pump is cylindrical, but this kind of regular cylindrical plunger pump need align oil inlet and oil-out respectively with the import and the export of oil pump shell when the assembly, often just can guarantee to align after many times assembly, has the problem that assembly efficiency and assembly precision are low.
In addition, the plunger pump generally comprises a shell and an oil distribution disc and a plunger assembly which are arranged in the shell, and when the prior art is assembled, the shell is fixedly connected with the oil distribution disc and the plunger assembly through bolts, and mounting holes are required to be processed on the oil distribution disc, the plunger assembly and the shell.
Therefore, how to design an oil pump assembly which is convenient to assemble and can ensure the assembly precision is a technical problem to be solved at present.
Disclosure of Invention
In order to solve the technical problems of low assembly efficiency and assembly precision caused by the fact that the oil pump assembly in the prior art needs to be visually aligned when the plunger pump is in a regular cylindrical shape, the utility model provides an oil pump assembly easy to assemble to solve the problems.
The technical scheme adopted for solving the technical problems is as follows: an easily assembled oil pump assembly comprises a plunger pump and a shell, wherein the outer circumferential surface of the plunger pump is cylindrical; the inside of the shell is provided with a mounting groove for accommodating the plunger pump, and one end of the shell is provided with a liquid inlet and a liquid outlet which are communicated with the plunger pump; the outer peripheral surface of the plunger pump and the inner surface of the mounting groove are provided with positioning structures matched with each other, so that the axial and circumferential relative positions of the plunger pump and the shell are unique.
Further, the positioning structure comprises at least one positioning pin positioned on the outer peripheral surface of the plunger pump and a positioning groove positioned on the inner peripheral surface of the shell and matched with the positioning pin.
Further, the surface of the locating pin, which is connected with the plunger pump, is an arc surface, and the locating pin is attached and fixed on the outer circumferential surface of the plunger pump.
Further, the outer peripheral surface of the plunger pump is provided with a limiting groove matched with the locating pin, and the locating pin protrudes out of the outer surface of the limiting groove.
Further, the locating pin is located in the axial middle of the plunger pump or located on one side face of the plunger pump, which is far away from the liquid inlet.
Further, the plunger pump comprises a shell, and a swash plate, a plunger, a cylinder body and an oil distribution disc which are arranged in sequence along the axial direction and are arranged in the shell, wherein the two axial ends of the shell are respectively provided with a limiting structure for limiting the axial direction of the swash plate and the oil distribution disc.
Furthermore, the outer peripheral surface of the oil distribution disc is provided with a limiting protrusion, the limiting structure matched with the oil distribution disc is a stamping protrusion positioned on the inner peripheral surface of the shell, and the stamping protrusion is formed by stamping the end surface of the shell where the oil distribution disc is positioned.
Further, the stamping protrusion is annular or is in a plurality of sections of arc shapes which are not mutually connected.
Further, the limiting structure matched with the oil distribution disc is a first fixing sleeve sleeved at the axial end part of the shell, and the first fixing sleeve is provided with a limiting end face for limiting the oil distribution disc in a one-way mode.
Further, the limit structure matched with the sloping cam plate is a limit ring integrally formed with the shell.
Further, the limiting structure matched with the swash plate is a second fixed sleeve sleeved at the axial end part of the shell, and the second fixed sleeve is provided with a limiting end face for limiting the swash plate in a unidirectional manner.
The beneficial effects of the utility model are as follows:
(1) According to the oil pump assembly easy to assemble, the positioning structure is arranged between the plunger pump and the shell, the oil port for butt joint of the plunger pump and the shell is quickly found through simple positioning, the assembly speed is high, and the precision is high.
(2) The oil pump assembly easy to assemble is characterized in that the limiting structure for axially limiting the oil distribution disc is a stamping protrusion formed by later stamping or a sleeved first fixing sleeve, and compared with the prior art, the oil pump assembly easy to assemble is directly connected by bolts, the axial space is adjustable, the installation flexibility is better, and the installation accuracy is higher.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the external structure of a plunger pump according to the present utility model;
FIG. 2 is an axial cross-sectional view of the housing of the present utility model;
FIG. 3 is a schematic view of the assembly of the housing and shell of the present utility model;
FIG. 4 is a perspective view of an embodiment of a dowel in accordance with the present utility model;
FIG. 5 is an axial cross-sectional view of an embodiment of an easily assembled oil pump assembly according to the present utility model;
FIG. 6 is a schematic view of the assembly of the housing with the oil distribution pan of the present utility model;
FIG. 7 is an enlarged view at a of FIG. 6;
FIG. 8 is a schematic diagram of the present utility model for shell shaft end stamping;
FIG. 9 is a perspective view of an embodiment of a two-end limiting structure of a housing according to the present utility model;
fig. 10 is a perspective view of a specific embodiment of a limiting structure at two ends of a housing according to the present utility model.
In the figure, 1, a plunger pump, 101, a shell, 102, a swash plate, 103, a plunger, 104, a cylinder body, 105, an oil distribution disc, 2, a shell, 3, an oil inlet, 4, an oil outlet, 5, a liquid inlet, 6, a liquid outlet, 7, a locating pin, 8, a locating groove, 9, a locating groove, 10, a locating bulge, 11, a stamping bulge, 12, a stamping groove, 13, a locating ring, 14, a first fixing sleeve, 15 and a second fixing sleeve.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
As shown in fig. 1 to 5, an oil pump assembly which is easy to assemble comprises a plunger pump 1 and a housing 2, wherein the outer peripheral surface of the plunger pump 1 is cylindrical; the inside of the shell 2 is provided with a mounting groove for accommodating the plunger pump 1, and one end of the shell 2 is provided with a liquid inlet 5 and a liquid outlet 6 which are communicated with the plunger pump 1; the outer peripheral surface of the plunger pump 1 and the inner surface of the mounting groove are provided with mutually matched positioning structures so as to lead the axial and circumferential relative positions of the plunger pump 1 and the shell 2 to be unique.
The utility model relates to a cylindrical plunger pump 1, which is characterized in that an oil distribution disc 105 of the plunger pump 1 is provided with an oil inlet 3 and an oil outlet 4, after the plunger pump 1 is installed in a shell 2, the oil inlet 3 is in butt joint with a liquid inlet 5, and the oil outlet 4 is in butt joint with a liquid outlet 6.
Example 1
As shown in fig. 1 and 3, an oil pump assembly which is easy to assemble, comprises a plunger pump 1 and a housing 2, wherein the outer peripheral surface of the plunger pump 1 is cylindrical; the inside of the shell 2 is provided with a mounting groove for accommodating the plunger pump 1, and one end of the shell 2 is provided with a liquid inlet 5 and a liquid outlet 6 which are communicated with the plunger pump 1; the outer peripheral surface of the plunger pump 1 and the inner surface of the mounting groove are provided with mutually matched positioning structures, and the positioning structures comprise at least one positioning pin 7 positioned on the outer peripheral surface of the plunger pump 1 and a positioning groove 8 positioned on the inner peripheral surface of the shell 2 and matched with the positioning pin 7.
The positioning pin 7 is preferably located in the axial middle of the plunger pump 1 or on the side of the end of the plunger pump 1 remote from the liquid inlet 5. As shown in fig. 3, a blind hole is formed in one end, far away from the liquid inlet 5, of the housing 2, the plunger pump 1 is installed in the blind hole from the opening at the lower part, and when the positioning pin 7 is located at the middle lower part of the plunger pump 1, the friction distance between the positioning pin 7 and the inner wall of the housing 2 is small in the assembly process.
The connection mode of the positioning pin 7 and the plunger pump 1 can be as follows: as shown in fig. 2, the surface of the positioning pin 7 connected to the plunger pump 1 is an arc surface, and the positioning pin 7 is bonded and fixed to the outer peripheral surface of the plunger pump 1.
In other alternative embodiments, the outer peripheral surface of the plunger pump 1 is provided with a limit groove 9 matched with the locating pin 7, the locating pin 7 protrudes out of the outer surface of the limit groove 9, that is, along the radial direction of the housing 101, the size of the locating pin 7 is larger than that of the limit groove 9, as shown in fig. 2 and 4, the locating pin 7 is in a cylindrical structure, the peripheral surface of the locating pin 7 is in contact with the housing 101, that is, the limit groove 9 is an arc groove, the outer diameter of the locating pin 7 is not larger than the inner diameter of the limit groove 9, so that the locating pin 7 can be plugged into the limit groove 9, the height of the surface of the locating pin 7 protruding out of the housing 101 is larger than the depth of the limit groove 9, and the protruding part is matched with the locating groove 8.
The plunger pump 1 generally includes a housing 101, and a swash plate 102, a plunger 103, a spring (not shown), a cylinder block 104, and an oil distribution plate 105, which are disposed inside the housing 101 in this order in the axial direction, the housing 101 having a cylindrical structure, and the positioning pins 7 being located on the outer peripheral surface of the housing 101. The two axial ends of the casing 101 are respectively provided with a limiting structure for axially limiting the swash plate 102 and the oil distribution disc 105. The limiting structure may be a conventional bolt fixing structure, that is, mounting holes are formed in the swash plate 102 and the oil distribution plate 105 and are fastened to both ends of the casing 101 by bolts.
Example two
The limiting structure of this embodiment is different from that of the first embodiment, specifically:
the outer peripheral surface of the oil distribution disc 105 is provided with a limiting protrusion 10, a limiting structure matched with the oil distribution disc 105 is a stamping protrusion 11 positioned on the inner peripheral surface of the shell 101, the stamping protrusion 11 is formed by stamping the end surface of the shell 101 where the oil distribution disc 105 is positioned, as shown in fig. 6 and 7, one end surface of the shell 101 close to the oil distribution disc 105 is stamped, and a stamping groove 12 is formed at the end part, so that the stamping protrusion 11 is generated on the inner wall of the shell 101, namely, the stamping protrusion 11 is a riveting piece, and the stamping protrusion 11 is abutted with the outer end surface of the limiting protrusion 10 to realize axial limiting. The stamping protrusion 11 may be in a ring shape or a plurality of arc shapes which are not connected to each other, and as shown in fig. 8, the end surface of the housing 101 has two arc-shaped stamping protrusions 11.
The limit structure matched with the swash plate 102 is a limit ring 13 integrally formed with the housing 101, the limit ring 13 is plugged at the end part of the swash plate 102 positioned at one end of the housing 101, other components in the plunger pump 1 are sequentially arranged in the housing 101 from the other end of the housing 101, and after the assembly is completed, the end surface of the housing 101 is punched to form a punching protrusion 11.
Example III
As shown in fig. 9, the stopper structure engaged with the swash plate 102 is still a stopper ring 13 integrally formed with the housing 101. The limiting structure matched with the oil distribution disc 105 is a first fixing sleeve 14 sleeved at the axial end part of the shell 101, the first fixing sleeve 14 is provided with a limiting end face for limiting the oil distribution disc 105 in a one-way mode, and the fixing sleeve and the shell 101 can be in threaded connection, clamping connection or welded fixation, namely, the fixing sleeve is matched with the limiting protrusion 10 to limit the oil distribution disc 105.
Example IV
As shown in fig. 10, the limiting structure matched with the oil distribution disc 105 is a stamped protrusion 11 positioned on the inner peripheral surface of the casing 101, the limiting structure matched with the swash plate 102 is a second fixing sleeve 15 sleeved at the axial end part of the casing 101, and the second fixing sleeve 15 is provided with a limiting end surface for limiting the swash plate 102 in a unidirectional manner. The internal parts are sequentially arranged in the shell 101, one end of the shell 101 forms a stamping bulge 11 to limit the oil distribution disc 105 in a stamping mode, the other end of the shell 101 is in threaded connection, clamping or welding fixation with the shell 101 through a second fixing sleeve 15, and the second fixing sleeve 15 limits the swash plate 102.
The shape of the stop collar 13 is similar to that of the first fixing sleeve 14 and the second fixing sleeve 15, and the difference is only that the stop collar 13 is integrally formed with the housing 101, and the first fixing sleeve 14 and the second fixing sleeve 15 are fixed with the housing 101 after the assembly is completed.
After the above limiting structure is used, the axial limiting depth of at least one end of the casing 101 is adjustable, namely, the axial position of the limiting structure can be controlled according to the actual distance between the swash plate 102 and the oil distribution disc 105, so that the mounting precision can be improved, and the axial shaking of internal parts of the plunger pump 1 is avoided.
The oil pump assembly in the above embodiment may be applied to a servo motor drive and control integrated system.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "thickness", "upper", "lower", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. An easy-to-assemble oil pump assembly, comprising:
the piston pump (1), the peripheral surface of the piston pump (1) is cylindrical;
a housing (2) having an installation groove for accommodating the plunger pump (1), wherein one end of the housing (2) is provided with a liquid inlet (5) and a liquid outlet (6) which are communicated with the plunger pump (1);
the outer peripheral surface of the plunger pump (1) and the inner surface of the mounting groove are provided with positioning structures matched with each other, so that the axial and circumferential relative positions of the plunger pump (1) and the shell (2) are unique;
the positioning structure comprises at least one positioning pin (7) positioned on the outer peripheral surface of the plunger pump (1) and a positioning groove (8) positioned on the inner peripheral surface of the shell (2) and matched with the positioning pin (7).
2. The easy-to-assemble oil pump assembly of claim 1, wherein: the surface of the locating pin (7) connected with the plunger pump (1) is an arc surface, and the locating pin (7) is adhered and fixed on the outer peripheral surface of the plunger pump (1).
3. The easy-to-assemble oil pump assembly of claim 1, wherein: the outer peripheral surface of the plunger pump (1) is provided with a limiting groove (9) matched with the locating pin (7), and the locating pin (7) protrudes out of the outer surface of the limiting groove (9).
4. The easy-to-assemble oil pump assembly of claim 1, wherein: the locating pin (7) is located in the axial middle of the plunger pump (1) or located on one side surface of the plunger pump (1) far away from the liquid inlet (5).
5. The easy-to-assemble oil pump assembly of claim 1, wherein: the plunger pump (1) comprises a shell (101), and a swash plate (102), a plunger (103), a cylinder body (104) and an oil distribution disc (105) which are arranged in sequence along the axial direction and are arranged in the shell (101), wherein the two axial ends of the shell (101) are respectively provided with a limiting structure for limiting the swash plate (102) and the oil distribution disc (105) in the axial direction.
6. The easy-to-assemble oil pump assembly of claim 5, wherein: the outer peripheral surface of the oil distribution disc (105) is provided with a limiting protrusion (10), a limiting structure matched with the oil distribution disc (105) is a stamping protrusion (11) positioned on the inner peripheral surface of the shell (101), and the stamping protrusion (11) is formed by stamping the end surface of the shell (101) where the oil distribution disc (105) is positioned.
7. The easy-to-assemble oil pump assembly of claim 6, wherein: the stamping protrusion (11) is annular or is in a plurality of sections of arc shapes which are not mutually connected.
8. The easy-to-assemble oil pump assembly of claim 5, wherein: the limiting structure matched with the oil distribution disc (105) is a first fixing sleeve (14) sleeved at the axial end part of the shell (101), and the first fixing sleeve (14) is provided with a limiting end face for limiting the oil distribution disc (105) in a one-way mode.
9. The easy-to-assemble oil pump assembly of any one of claims 5-8, wherein: the limit structure matched with the swash plate (102) is a limit ring (13) integrally formed with the shell (101).
10. The easy-to-assemble oil pump assembly of any one of claims 5-8, wherein: the limiting structure matched with the swash plate (102) is a second fixed sleeve (15) sleeved at the axial end part of the shell (101), and the second fixed sleeve (15) is provided with a limiting end face for limiting the swash plate (102) in a one-way manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321733728.6U CN220227156U (en) | 2023-07-04 | 2023-07-04 | Oil pump assembly easy to assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321733728.6U CN220227156U (en) | 2023-07-04 | 2023-07-04 | Oil pump assembly easy to assemble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227156U true CN220227156U (en) | 2023-12-22 |
Family
ID=89187171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321733728.6U Active CN220227156U (en) | 2023-07-04 | 2023-07-04 | Oil pump assembly easy to assemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227156U (en) |
-
2023
- 2023-07-04 CN CN202321733728.6U patent/CN220227156U/en active Active
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