CN103603909B - A kind of double-crankshaft damping device of reciprocating electric tool - Google Patents

Abstract

The invention discloses a double crank damping device of a reciprocating electric tool, which comprises a frame, a guide device and a sliding device, the sliding device is arranged in the frame and can slide along the guiding device, and a buffer device is arranged between the sliding device and the frame , the buffer device connects the frame and the sliding device together, and is characterized in that it also includes the driving gear crank (9) and the driven gear crank (10), the driving gear crank (9) and the driven gear crank (10) and the sliding device A double crank sliding mechanism is formed. The invention changes the rigid impact of the load in the processing of the reciprocating electric tool into a flexible impact through the buffer device, and has the advantages of smaller vibration, longer service life and more ideal processing track compared with the existing structure.

Description

A double-crank damping device for a reciprocating electric tool

technical field

The invention belongs to the field of electric tools, and relates to a double-crank damping device of a reciprocating electric tool, which uses a motor to reciprocate processing devices such as saw blades for processing and fast rewinding.

Background technique

Reciprocating power tools are a large category of power tools and are widely used in wood, plastic and steel pipe processing. Although there are various reciprocating electric tools on the market, they are vulnerable to damage, unsatisfactory processing effect and operator fatigue due to the large vibration.

Contents of the invention

The purpose of the present invention is to provide a shock absorbing device, so that the reciprocating electric tool has the advantages of small vibration, long service life, easy replacement of wearing parts, ideal processing track, etc., and fully utilizes the energy of no-load during rewinding.

The invention specifically discloses a double-crank damping device for a reciprocating electric tool, which includes a frame, a guiding device and a sliding device. The sliding device is arranged in the frame and can slide along the guiding device. A buffer is provided between the sliding device and the frame. The buffer device connects the frame and the sliding device together, and is characterized in that it also includes a driving gear crank and a driven gear crank, and the driving gear crank, the driven gear crank and the sliding device form a double crank sliding mechanism.

Further, two sets of rubber sleeves and metal sleeves are respectively fixed on the crankshafts of the driving gear crank and the driven gear crank through elastic circlips for the shaft.

Wherein, the sliding device is a hollow structure, the crankshafts of the driving gear crank and the driven gear crank are inserted into the hollow opening of the sliding device, the motor drives the driving gear crank to rotate through the rotating shaft, and the driving gear crank drives the driven gear crank to rotate through the gear pair , thereby pushing the sliding device to reciprocate up and down.

Wherein, the guide device is two guide rods, which are fixedly connected to the frame, and the sliding device can slide up and down along the guide rods.

Wherein, the frame includes an upper outer frame, a lower outer frame and a supporting sleeve, and the upper outer frame, the lower outer frame and the two supporting sleeves are connected together by two groups of bolts.

Further, it also includes an energy storage spring, one end of which is connected to the upper or lower outer frame, and the other end is connected to the housing of the electric tool.

Further, the buffer device is buffer rubber or buffer spring.

Further, an adjusting shim is arranged on one side of the supporting sleeve, and the pretightening force of the buffer device can be adjusted by increasing or decreasing the adjusting shim.

Further, the upper outer frame or the lower outer frame is connected with the processing device.

The beneficial effect of the present invention is that the rigid impact of the load in the processing of the reciprocating electric tool is changed into a flexible impact through the buffer device. Compared with the existing structure, this transmission device has smaller vibration, longer service life and more ideal processing track Etc.

Description of drawings

Fig. 1 is a structural schematic front view of the present invention;

Fig. 2 is the left view of structural representation of the present invention;

Fig. 3 is a frontal axonometric view of a schematic structural view of the present invention;

Fig. 4 is the rear axonometric view of the structure diagram of the present invention;

In the picture:

1. Upper outer frame, 2. Guide rod, 3. Bolt group, 4. Buffer device, 5. Support sleeve,

6. Slider, 7. Adjusting gasket, 8. Lower outer frame, 9. Driving gear crank,

10. Driven gear crank, 11. Processing device, 12. Metal sleeve, 13. Rubber sleeve, 14. Circlip for shaft.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-4, the upper outer frame 1, the lower outer frame 8 and the two support sleeves 5 are connected together by two sets of bolt groups 3, and the two guide rods 2 are fixedly connected to the upper outer frame 1 and the lower outer frame 8, the slider 6 is arranged between the upper outer frame 1 and the lower outer frame 8, the slider 6 can slide up and down along the guide rod 2, and a buffer component is arranged between the slider 6 and the upper outer frame 1 and the lower outer frame 8 4, so that the slider 6 is combined with the upper outer frame 1 and the lower outer frame 8 into a whole. The buffer device can be a buffer rubber or a buffer spring.

Two groups of rubber sleeves 13 and metal sleeves 12 are respectively fixed on the crankshafts of the driving gear crank 9 and the driven gear crank 10 through the shaft circlip 14 . Drive gear crank 9, driven gear crank 10 and slide block 6 form crank slider mechanism, slide block 6 is a hollow structure, the crankshaft of drive gear crank 9 and driven gear crank 10 is inserted in the hollow opening of slide block, upper and outer The frame 1 or the lower outer frame 8 is connected with the processing device 11 .

When working, the motor drives the driving gear crank 9 to rotate through the rotating shaft of the driving gear crank 9, drives the driven gear crank 10 to rotate through the gear pair, and the crankshafts of the driving gear crank 9 and the driven gear crank 10 slide left and right in the slider, thereby pushing The slider 6 reciprocates up and down, and the slider 6 drives the upper frame 1 and the lower frame 8 to move through the buffer rubber or the buffer spring 4, and finally drives the processing device 11 to reciprocate up and down.

An adjusting washer 7 can be arranged on one side of the supporting sleeve 5 , and the pretightening force of the buffer rubber 4 can be adjusted by increasing or decreasing the adjusting washer 7 .

An energy storage spring can also be connected to the upper or lower outer frame 8, and the other end of the energy storage spring is connected to the electric tool housing. Taking the processing device 11 moving downward as an example, the upper outer frame 1 and the lower outer frame 8 move downward to compress the energy storage spring to store energy, and move upward to loosen the energy storage spring to release energy.

It should be emphasized that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also within the protection scope of the present invention.

Claims (8)

1. the double-crankshaft damping device of a reciprocating electric tool, comprise framework, guiding device and sliding device, sliding device is arranged in framework, can slide along guiding device, damping device is provided with between sliding device and framework, framework and sliding device link together by damping device, it is characterized in that, also comprise driving gear crank (9) and driven gear crank (10), driving gear crank (9) and driven gear crank (10) form double-crank slide mechanism with sliding device, also comprise two groups of rubber bushs (13) and metal sleeve (12), one group of rubber bush (13) and metal sleeve (12) are fixed on the bent axle of driving gear crank (9) by circlip for shaft (14), another group rubber bush (13) and metal sleeve (12) are fixed on the bent axle of driven gear crank (10) by circlip for shaft (14).

2. double-crankshaft damping device according to claim 1, it is characterized in that: described sliding device is hollow structure, the bent axle of driving gear crank (9) and driven gear crank (10) is inserted in the hollow open of sliding device, motor drives driving gear crank (9) to rotate by rotating shaft, driving gear crank (9) drives driven gear crank (10) to rotate by gear pair, thus promotion sliding device pumps.

3. double-crankshaft damping device according to claim 2, is characterized in that: described guiding device is two guide rods (2), is fixedly connected on framework, and sliding device can slide up and down along guide rod (2).

4. the double-crankshaft damping device according to any one of claim 1-3, it is characterized in that: described framework comprises housing (1), lower housing (8) and stop sleeve (5), upper housing (1), lower housing (8) and two stop sleevees (5) are linked together by two groups of bolt groups (3).

5. double-crankshaft damping device according to claim 4, is characterized in that: also comprise

Energy-storaging spring, its one end is connected with upper housing (1) or lower housing (8), and the other end is connected with housing of electric tool.

6. the double-crankshaft damping device according to claim 1,2,3 or 5, is characterized in that: described damping device is yielding rubber or damping spring.

7. double-crankshaft damping device according to claim 4, is characterized in that: arrange adjustment pad (7) in stop sleeve (5) side, can be regulated the pretightening force of damping device by increase and decrease adjustment pad (7).

8. double-crankshaft damping device according to claim 4, is characterized in that: upper housing (1) or lower housing (8) are connected with processing device (11).