CN203939753U - The linkage structure of vacuum pump rotor and motor output shaft - Google Patents
The linkage structure of vacuum pump rotor and motor output shaft Download PDFInfo
- Publication number
- CN203939753U CN203939753U CN201420279109.9U CN201420279109U CN203939753U CN 203939753 U CN203939753 U CN 203939753U CN 201420279109 U CN201420279109 U CN 201420279109U CN 203939753 U CN203939753 U CN 203939753U
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- China
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- output shaft
- pump rotor
- finger setting
- setting hole
- motor output
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Abstract
The utility model discloses a kind of rotating shaft connecting structure, provide a kind of simple in structure, cost is low, the linkage structure that connects reliable vacuum pump rotor and motor output shaft, the pump rotor that exists in prior art and the linkage structure complex structure between motor output shaft have been solved, relevant composition component are more, Installation and Debugging are loaded down with trivial details, the technical problem that cost of production is high, it comprises front motor cover, in a side of front motor cover, be rotationally connected one end of pump rotor rotating shaft, the one end that is connecting motor output shaft in the opposite side coaxial rotation of front motor cover, axle head in described pump rotor rotating shaft is at least provided with two axial rotor finger setting holes, the corresponding axial direction electric machine finger setting hole that is provided with on the axle head of the motor output shaft corresponding with axial rotor finger setting hole, between axial rotor finger setting hole and corresponding axial direction electric machine finger setting hole, be plugged with connecting pin.
Description
Technical field
The utility model relates to a kind of rotating shaft connecting structure, relates in particular to a kind of simple in structurely, and cost is low, connects the linkage structure of reliable vacuum pump rotor and motor output shaft.
Background technique
Vacuum pump is to utilize machinery, physics, the method such as chemistry or physical chemistry produces in a certain enclosed space, improve and maintain the device of vacuum, it is widely used in medication chemistry, electronic technology, vacuum drying, the fields such as refrigeration, generally be divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump is wherein the widest as backing pump application area, it is divided into again two kinds of single-stage rotary vane type vacuum pump and Double-stage rotary vane vacuum pumps, generally by the pump rotor in pump chamber and pump chamber, motor, intakeport, the compositions such as relief opening, pump rotor is wherein to drive rotation by the motor outside pump chamber, pump rotor in existing rotary-vane vaccum pump is to be generally coaxially connected on the output shaft of motor by coupling, form component many, complex structure, Installation and Debugging are loaded down with trivial details, cost of production is high.
Summary of the invention
The utility model has mainly been to provide a kind of simple in structure, cost is low, the linkage structure that connects reliable vacuum pump rotor and motor output shaft, the pump rotor that exists in prior art and the linkage structure complex structure between motor output shaft have been solved, relevant composition component are more, Installation and Debugging are loaded down with trivial details, the technical problem that cost of production is high.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the linkage structure of a kind of vacuum pump rotor and motor output shaft, comprise front motor cover, in a side of front motor cover, be rotationally connected one end of pump rotor rotating shaft, the one end that is connecting motor output shaft in the opposite side coaxial rotation of front motor cover, axle head in described pump rotor rotating shaft is at least provided with two axial rotor finger setting holes, the corresponding axial direction electric machine finger setting hole that is provided with on the axle head of the motor output shaft corresponding with axial rotor finger setting hole, between axial rotor finger setting hole and corresponding axial direction electric machine finger setting hole, be plugged with connecting pin.By two or more connecting pins are axially set between the axle head of the axle head in pump rotor rotating shaft and motor output shaft, the two ends of connecting pin are plugged on respectively in pump rotor rotating shaft and positioning hole corresponding to motor output shaft axle head, when electric machine rotation, can pass through connecting pin driving torque, with respect to coupling, connect, simple in structure, easily install, and connect safe and reliablely, saved manufacture and cost of production.
As preferably, described connecting pin is straight pin, and corresponding to the connecting pin length in axial rotor finger setting hole, is 1.5 to 3 times of connecting pin length in axial direction electric machine finger setting hole.Straight pin, as standard piece, is easily purchased, and cost is low; Due to the assembling of vacuum pump first assemble pump body divide, motor is connected on the pump housing assembling again, between connecting pin and pump rotor rotating shaft, it is interference fit, it between connecting pin and motor output shaft, is Spielpassung, therefore when being positioned at the connecting pin length of pump rotor rotating shaft side and being greater than the connecting pin length of motor output shaft side, not only improve the join strength of connecting pin and pump rotor rotating shaft, and be easy to the abutting joint between connecting pin and motor output shaft.
As preferably, described connecting pin and axial rotor finger setting hole are interference fit, and connecting pin and axial direction electric machine finger setting hole are Spielpassung.Connecting pin and axial rotor finger setting hole prevent from while being interference fit when driven by motor pump rotor from rotating occurring rocking, improve connection reliability, when connecting pin and axial direction electric machine finger setting hole are Spielpassung, be convenient to the abutting joint between the fixing rear the other end in connecting pin one end and motor output shaft.
As preferably, described connecting pin relative pump rotor rotating shaft core line or motor output shaft shaft axis are uniformly distributed on same circumference.Improve connective stability, avoid connecting pin unbalance stress and occur phenomenon of rupture.
As preferably, outside described pump rotor rotating shaft and motor output shaft, on the front motor cover of correspondence, be respectively equipped with bearing.Bearing guarantees that pump rotor and motor output shaft are accurately positioned on front motor cover and keep coaxial rotation.
Therefore, vacuum pump rotor of the present utility model has following advantage with the linkage structure of motor output shaft: between the axle head by the axle head in pump rotor rotating shaft and motor output shaft, two or more connecting pins are axially set and are connected, can pass through connecting pin driving torque, simple in structure, easily install, and connect safe and reliablely, saved manufacture and cost of production; Connecting pin one end and pump rotor rotating shaft interference fit, the other end and motor output shaft Spielpassung, and when connecting pin is greater than the length of thread engagement of motor output shaft side corresponding to the length of thread engagement of pump rotor rotating shaft side, both can prevent from when driven by motor pump rotor from rotating occurring rocking, improve join strength and reliability, be convenient to again the abutting joint between connecting pin and motor output shaft.
accompanying drawing explanation:
Fig. 1 is the structural representation of the linkage structure of the utility model vacuum pump rotor and motor output shaft;
Fig. 2 is the enlarged view at the place of A shown in Fig. 1.
embodiment:
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, the linkage structure of a kind of vacuum pump rotor of the present utility model and motor output shaft, the front motor cover 1 that comprises rotary-vane vaccum pump, in the axis hole of front motor cover 1, coaxial setting-in two bearings 7, on bearing 7 corresponding to left side, be rotationally connected the axle head of pump rotor 2 rotating shafts, on bearing 7 corresponding to right side, be rotationally connected the axle head of motor 3 output shafts, as shown in Figure 2, axle head end face in pump rotor 2 rotating shafts has two axial rotor finger setting holes 4, two axial rotor finger setting holes 4 are positioned in same concentric circumference, and the axial connecting line in axial rotor finger setting hole 4 is through the axle center of pump rotor 2 rotating shafts, correspondingly on the axle head end face of motor 3 output shafts corresponding with axial rotor finger setting hole 4 have two axial direction electric machine finger setting holes 5, axial rotor finger setting hole 4 degree of depth are 2 times of axial direction electric machine finger setting hole 5 degree of depth, the connecting pin 6 of pegging graft respectively in axial rotor finger setting hole 4 and 5 corresponding, axial direction electric machine finger setting hole, connecting pin 6 is straight pin, connecting pin 6 and axial rotor finger setting hole 4 coordinate for slight interference, connecting pin 6 is Spielpassung with axial direction electric machine finger setting hole 5, matching gap is 0.1mm, and corresponding to connecting pin 6 length in axial rotor finger setting hole 4, be 2 times of connecting pin 6 length in axial direction electric machine finger setting hole 5.
Specific embodiment described herein is only to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. the linkage structure of a vacuum pump rotor and motor output shaft, comprise front motor cover (1), in a side of front motor cover (1), be rotationally connected one end of pump rotor (2) rotating shaft, the one end that is connecting motor (3) output shaft in the opposite side coaxial rotation of front motor cover (1), it is characterized in that: the axle head in described pump rotor (2) rotating shaft is at least provided with two axial rotor finger setting holes (4), the corresponding axial direction electric machine finger setting hole (5) that is provided with on the axle head of motor (3) output shaft corresponding with axial rotor finger setting hole (4), between axial rotor finger setting hole (4) and corresponding axial direction electric machine finger setting hole (5), be plugged with connecting pin (6).
2. the linkage structure of vacuum pump rotor according to claim 1 and motor output shaft, it is characterized in that: described connecting pin (6) is straight pin, and corresponding to connecting pin (6) length in axial rotor finger setting hole (4), be 1.5 to 3 times of connecting pin (6) length in axial direction electric machine finger setting hole (5).
3. the linkage structure of vacuum pump rotor according to claim 1 and 2 and motor output shaft, it is characterized in that: described connecting pin (6) is interference fit with axial rotor finger setting hole (4), and connecting pin (6) is Spielpassung with axial direction electric machine finger setting hole (5).
4. the linkage structure of vacuum pump rotor according to claim 1 and 2 and motor output shaft, is characterized in that: relative pump rotor (2) the rotating shaft core line of described connecting pin (6) or motor (3) output shaft shaft axis are uniformly distributed on same circumference.
5. the linkage structure of vacuum pump rotor according to claim 1 and 2 and motor output shaft, is characterized in that: outside (2) rotating shaft of described pump rotor and motor (3) output shaft, on the support (1) of correspondence, be respectively equipped with bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279109.9U CN203939753U (en) | 2014-05-29 | 2014-05-29 | The linkage structure of vacuum pump rotor and motor output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279109.9U CN203939753U (en) | 2014-05-29 | 2014-05-29 | The linkage structure of vacuum pump rotor and motor output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939753U true CN203939753U (en) | 2014-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420279109.9U Active CN203939753U (en) | 2014-05-29 | 2014-05-29 | The linkage structure of vacuum pump rotor and motor output shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130193A (en) * | 2019-12-30 | 2021-07-16 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor rotary transformer and automatic zero setting method thereof |
-
2014
- 2014-05-29 CN CN201420279109.9U patent/CN203939753U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130193A (en) * | 2019-12-30 | 2021-07-16 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor rotary transformer and automatic zero setting method thereof |
| CN113130193B (en) * | 2019-12-30 | 2023-10-31 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor rotary transformer and automatic zero setting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |