CN210631270U

CN210631270U - Swing saw

Info

Publication number: CN210631270U
Application number: CN201920766184.0U
Authority: CN
Inventors: 郑传渭
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-05-29
Anticipated expiration: 2029-05-17

Abstract

A swing saw comprises a shell, an outer rotating body, an inner rotating body and a swing shaft, wherein the outer rotating body is installed in the middle section of the shell through a bearing, the inner rotating body is installed in the outer rotating body through a bearing, an eccentric distance exists between the rotation center of the inner rotating body and the rotation center of the outer rotating body, a first eccentric body at the front end of the inner rotating body and a second eccentric body at the tail end of the swing shaft are movably hinged together, and the swing shaft is installed in the front section of the shell. Compared with the prior art, the utility model discloses a swing saw's advantage lies in can improving the rotational speed, reduce to generate heat, noise reduction, reduction vibration, increase of service life.

Description

Swing saw

Technical Field

The utility model relates to a medical surgical operation instrument device, in particular to a swing saw.

Background

The oscillating saw is a common tool for cutting bone tissue in surgical operations, and needs to cut bone tissue rapidly and accurately, in the prior art, a transmission mechanism of the oscillating saw usually utilizes an eccentric shaft sleeve to press an inner wall of an oscillating groove to complete oscillating cutting, as disclosed in chinese patents CN200720063571.5 and CN02226669.0 attached drawings, the oscillating saw with the structure generally has the following problems: the rotating speed is not high during working, and the operation efficiency is low; the heating is serious during the work, the noise is large, and the operation environment is influenced; the vibration is large, the operation is not stable, the movement precision of the saw blade is not high, and the safety is poor in the operation process; the eccentric shaft sleeve and the sliding groove are easy to wear, and the service life is short.

Therefore, how to increase the rotation speed, reduce heat generation, reduce noise, reduce vibration, and prolong the service life of the swing saw becomes an important technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a swing saw can avoid the drawback that the drive mechanism of swing saw under the prior art brought, reaches the purpose that increases the rotational speed, reduces to generate heat, noise reduction, reduction vibration, increase of service life.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a swing saw is characterized by comprising a shell, an outer rotating body, an inner rotating body and a swing shaft, wherein the outer rotating body is installed in the middle section of the shell through a bearing, the inner rotating body is installed in the outer rotating body through a bearing, the rotating center of the inner rotating body and the rotating center of the outer rotating body have an eccentric distance, a first eccentric body at the front end of the inner rotating body and a second eccentric body at the tail end of the swing shaft are movably hinged together, and the swing shaft is installed in the front section of the shell.

Preferably, the center line of the cylinder at the front section of the housing and the center line of the cylinder at the middle section of the housing have an eccentricity.

Preferably, the tail end of the outer rotor body is provided with a power interface.

Preferably, a locking member capable of fixing the cutter is arranged at the front end of the swinging shaft.

The utility model discloses a beneficial achievement: compared with the prior art, the utility model discloses a swing saw's advantage lies in can improving the rotational speed, reduce to generate heat, noise reduction, reduction vibration, increase of service life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a swing saw according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with a preferred embodiment of the present invention;

fig. 3 is a cross-sectional view taken along line C-C of fig. 1 in accordance with a preferred embodiment of the present invention;

FIG. 4 is a perspective view of a knife used with a pendulum saw in accordance with a preferred embodiment of the present invention;

Detailed Description

To explain technical contents and structural features of the present invention in detail, the following detailed description is further made in conjunction with the embodiments and the accompanying drawings.

The swing saw is characterized by comprising a shell (1), an outer rotating body (2), an inner rotating body (3) and a swing shaft (4), wherein the outer rotating body (2) is installed in a middle section (102) of the shell (1) through a first bearing (2001) and a second bearing (2002), the inner rotating body (3) is installed in the outer rotating body (2) through a third bearing (3001), an eccentric distance exists between the rotation center of the inner rotating body (3) and the rotation center of the outer rotating body (2), a first eccentric body (301) at the front end of the inner rotating body (3) and a second eccentric body (402) at the tail end of the swing shaft (4) are movably hinged together, and the swing shaft (4) is installed in a front section (101) of the shell (1).

When the cutting tool is used, a saw handle (501) of the cutting tool (5) is inserted into a hole (401) in the front end of a swinging shaft (4), a locking part (4001) is locked, a driving motor is started, the driving motor drives an outer rotating body (2) to rotate through a power interface (2003) connected with the tail end of the outer rotating body (2), the outer rotating body (2) drives an inner rotating body (3) to revolve around the rotating axis of the outer rotating body (2), a first eccentric body (301) fixed at the front end of the inner rotating body (3) drives a second eccentric body (402) at the tail end of the swinging shaft (4) movably hinged with the inner rotating body to move, and the second eccentric body (402) drives the cutting tool (5) at the front end of the swinging shaft (4) to swing to and fro to realize cutting.

Claims

1. The swing saw is characterized by comprising a shell (1), an outer rotating body (2), an inner rotating body (3) and a swing shaft (4), wherein the outer rotating body (2) is installed in a middle section (102) of the shell (1) through a first bearing (2001) and a second bearing (2002), the inner rotating body (3) is installed in the outer rotating body (2) through a third bearing (3001), an eccentric distance exists between the rotation center of the inner rotating body (3) and the rotation center of the outer rotating body (2), a first eccentric body (301) at the front end of the inner rotating body (3) and a second eccentric body (402) at the tail end of the swing shaft (4) are movably hinged together, and the swing shaft (4) is installed in a front section (101) of the shell (1).

2. A saw as claimed in claim 1, characterised in that the cylinder centre line of the front section (101) of the housing (1) and the cylinder centre line of the middle section (102) of the housing (1) are eccentric.

3. A saw, according to claim 1, characterized in that the tail end of the outer body (2) is provided with a power interface (2003).

4. A saw as claimed in claim 1, characterized in that the front end of the oscillating shaft (4) is provided with a locking element (4001) for securing the blade (5).