CN210660477U

CN210660477U - Fixing structure for eccentric device and motor rotating shaft of oil-free air compression pump

Info

Publication number: CN210660477U
Application number: CN201921625428.XU
Authority: CN
Inventors: 瞿海波
Original assignee: Jiangsu Xinke Medical Devices Co ltd
Current assignee: Jiangsu Xinke Medical Devices Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-02
Anticipated expiration: 2029-09-27

Abstract

The utility model provides an oilless air compression pump eccentric ware and motor shaft's fixed knot constructs, including motor (1), piston (2) and eccentric ware (3), motor (1) links to each other with eccentric ware (3) hole through motor shaft (4), the round hole in piston rod (7) is arranged in eccentric ware (3), be equipped with screw hole (5) on eccentric ware (3), the bottom side part that is located eccentric ware (3) fan-shaped structure both sides of screw hole (5), screw hole (5) are equipped with paired bolt (6). Compare in traditional oil-free air compressor pump, the utility model has the advantages of adjust the position of screw hole for the screw hole can be just to installation operating personnel, improves holistic installation effectiveness in the installation.

Description

Fixing structure for eccentric device and motor rotating shaft of oil-free air compression pump

Technical Field

The utility model relates to a fixed knot constructs, in particular to oil-free air compression pump eccentric and motor shaft's fixed knot constructs.

Background

The oil-free air compression pump mainly comprises a motor, an eccentric device, a piston, a crankcase, a cylinder body and the like, wherein the motor drives the eccentric device to rotate and then drives the piston to reciprocate up and down in the cylinder body during work. The fixed structure of the eccentric device on the motor and the piston can directly influence the operation of the whole oil-free air compression pump.

A common method for fixing a motor and an eccentric of an oil-free air compression pump is to open a groove in a threaded hole right below the eccentric and fix the eccentric and a rotating shaft on one side of the motor through bolts. However, due to the operational characteristics of the oilless air compression pump, the pistons at both sides cannot be maintained at the same level, resulting in the position of the screw hole of the eccentric upward or downward, which has an operationally inconvenient effect on the fixation of the eccentric to the rotational shaft of the motor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current technical defect, designs an oilless air compression pump eccentric and motor shaft's fixed knot and constructs, mainly removes the position through screw hole on the eccentric, conveniently installs work.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an oil-free air compression pump eccentric ware and motor shaft's fixed knot constructs, includes motor, piston and eccentric ware, the motor passes through motor shaft and links to each other with the eccentric ware hole, the round hole in the piston rod is arranged in to the eccentric ware.

The eccentric device is provided with a threaded hole, the threaded hole is located in the bottom side portions of two sides of the fan-shaped structure of the eccentric device, and the threaded hole is provided with paired bolts.

And symmetrical grooves are formed in two sides of the end of the motor rotating shaft and are matched with the bolts and the threaded holes.

Advantageous effects

The utility model provides a pair of oil-free air compression pump eccentric ware and motor shaft's fixed knot constructs according to the characteristic of piston motion among the oil-free air compression pump, adjusts the position of screw hole on the eccentric ware for the screw hole can be just to installation operating personnel in the installation, improves holistic installation effectiveness. Meanwhile, the groove on the motor rotating shaft is matched with the bolt and the threaded hole, so that the eccentric device and the motor rotating shaft can be well fixed.

Drawings

FIG. 1 is a schematic structural diagram of an eccentric device and a motor shaft of an oil-free air compressor pump according to the present embodiment;

FIG. 2 is a schematic sectional view illustrating a movement position of a piston in operation of the oilless air compressor pump according to the embodiment;

in the figure, 1, a motor; 2. a piston; 3. an eccentric; 4. a motor shaft; 5. a threaded hole; 6. a bolt; 7. a piston rod; 8. motor shaft recess.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are used only for illustrating the present invention and are not intended to limit the present invention.

Example 1

As shown in fig. 1 and 2, the eccentric device comprises a motor (1), a piston (2) and an eccentric device (3), wherein the motor (1) is connected with an inner hole of the eccentric device (3) through a motor rotating shaft (4), and the eccentric device (3) is arranged in a circular hole in a piston rod (7). Be equipped with screw hole (5) on eccentric ware (3), screw hole (5) are located the bottom side part of eccentric ware (3) fan-shaped structure both sides, and screw hole (5) are equipped with mating bolt (6).

Two sides of the end of the motor rotating shaft (4) are provided with symmetrical grooves (8), and the grooves (8) are matched with the bolts (6) and the threaded holes (5).

Oil-free air compression pump is because its operating characteristic, as shown in fig. 2, the piston on both sides carries out reciprocating motion from top to bottom through the drive of motor, at the in-process of installation, need pass through the bolt, the screw thread comes eccentric and motor shaft to fix, traditional screw thread position is located the opposite bottom side of the fan-shaped structure of eccentric, make at the fixed in-process of installation, the direction of screw hole is in ascending or decurrent position always, arrange in the crankcase, be fixed with certain operation degree of difficulty to the installation, the bottom side part of the fan-shaped structure both sides of eccentric is migrated to the position of screw hole, no matter what kind of position about the piston is in, its screw hole is in horizontal position all the time, this has very big facility to bolt fastening operation.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a fixed knot of oil-free air compressor pump eccentric ware and motor shaft constructs, its characterized in that, includes motor (1), piston (2) and eccentric ware (3), motor (1) links to each other with eccentric ware (3) hole through motor shaft (4), the round hole in piston rod (7) is arranged in eccentric ware (3).

2. An oil-free air compression pump eccentric and motor shaft fixing structure as claimed in claim 1, characterized in that the eccentric (3) is provided with a threaded hole (5), the bottom side portions of the threaded hole (5) located at both sides of the sector structure of the eccentric (3) are provided with mating bolts (6), and the threaded hole (5) is provided with a mating bolt (6).

3. An oil-free air compression pump eccentric device and motor shaft fixing structure as claimed in claim 1, wherein symmetrical grooves (8) are formed in two sides of the end of the motor shaft (4), and the grooves (8) are matched with the bolts (6) and the threaded holes (5).