CN211491288U - Electric screwdriver and damping mechanism thereof - Google Patents

Abstract

The utility model relates to a damper and electronic screwdriver of electronic screwdriver, damper include first shock pad and second shock pad, the gear box of electronic screwdriver is located to first shock pad with between the casing of electronic screwdriver, first shock pad is close to the motor of electronic screwdriver, the second shock pad is located the motor of electronic screwdriver with between the casing of electronic screwdriver. Among the above-mentioned damper, weaken the vibrations that the gear box operation produced through first shock pad, weaken the vibrations that the motor operation produced through the second shock pad, reduce the casing and transmit the production of user's vibrations and noise, promote user's use and experience, promote carbon brush rectification effect simultaneously, and then the life of lifting means.

Description

Electric screwdriver and damping mechanism thereof

Technical Field

The utility model relates to a hardware and tools technical field especially relates to an electronic screwdriver and damper thereof.

Background

During the operation of electronic screwdriver, the motor passes through the gear box and drives the drive shaft rotation, can produce vibrations in motor and the gear box operation process to send the noise. The large vibration not only influences the operation experience, but also influences the friction between the commutator and the carbon brush of the motor part, and reduces the service life of the whole machine.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is desirable to provide a damping mechanism for reducing vibration and noise of an electric screwdriver and prolonging the service life of the electric screwdriver, and an electric screwdriver including the damping mechanism.

A vibration dampening mechanism for an electric screwdriver comprising:

a first cushion pad; the first shock pad is arranged between a gear box of the electric screwdriver and a shell of the electric screwdriver, and the first shock pad is close to a motor of the electric screwdriver; and

a second cushion pad; the second shock pad is arranged between the motor of the electric screwdriver and the shell of the electric screwdriver.

Among the above-mentioned damper, weaken the vibrations that the gear box operation produced through first shock pad, weaken the vibrations that the motor operation produced through the second shock pad, can reduce the casing like this and transmit the production of user's vibrations and noise, promote the carbon brush rectification effect simultaneously, and then promote equipment's life.

In one embodiment, the second shock pad is remote from the gear box.

In one embodiment, the second shock pad is proximate the gear box.

In one embodiment, the first cushion and the second cushion are integrally formed.

In one embodiment, the side of the first shock pad close to the gear box of the electric screwdriver and the side of the second shock pad close to the motor of the electric screwdriver are distributed with convex blocks, and the convex blocks are hemispherical.

In one embodiment, a side of the first shock pad close to the gear box of the electric screwdriver and a side of the second shock pad close to the motor of the electric screwdriver are provided with a convex part, and the convex parts are net-shaped.

In one embodiment, the side of the first shock pad close to the gear box of the electric screwdriver and the side of the second shock pad close to the motor of the electric screwdriver are provided with saw teeth.

In one embodiment, the first and second shock absorbing pads are made of a flexible material.

In one embodiment, the first and second shock absorbing pads are integrally formed with the housing of the electric screwdriver.

An electrically powered screwdriver, comprising:

the above-described damper mechanism;

a housing;

the peripheral wall of the gear box is abutted to the shell through the first shock pad;

a motor, the peripheral wall of which is abutted against the casing through the second shock pad; and

one end of the driving shaft is in transmission connection with the power output end of the motor through the gear box, the other end of the driving shaft extends out of the shell, and the driving shaft can rotate around the central axis of the driving shaft under the driving of the motor.

Drawings

FIG. 1 is a schematic view of an embodiment of an electric screwdriver;

FIG. 2 is a schematic structural view of another embodiment of an electric screwdriver;

FIG. 3 is a schematic view of the position relationship between the damping mechanism and the gear box and the housing of the electric screwdriver shown in FIG. 1;

FIG. 4 is a side view of the electric screwdriver of FIG. 1 with the shock pad having serrations;

FIG. 5 is a front view of the vibration dampening mechanism of the electric screwdriver of FIG. 1 with a meshed boss;

fig. 6 is a side view of the shock absorbing mechanism of the electric screwdriver of fig. 1 provided with a projection.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, an embodiment provides an electric screwdriver including a vibration reduction mechanism, a tooth motor 300, a gear box 400, a driving shaft 500, a housing 600, and a storage battery 700. One end of the driving shaft 500 is in transmission connection with the power output end of the motor 300 through the gear box 400, the other end of the driving shaft 500 extends out of the casing 600 for rotating screws, and the driving shaft 500 can rotate around the central axis of the driving shaft 500 under the driving of the motor 300. An accumulator 700 is mounted at an end of the motor 300 remote from the gear box 400, the accumulator 700 being used to power the motor 300. The shock-absorbing mechanism in the electric screwdriver can reduce the shock transmitted to the user due to the shock of the motor 300, reduce the noise generated in the operation of the gear 400 and improve the use experience of the user. In addition, the problem that the rectification effect of the carbon brush is poor due to vibration of the motor 300 can be avoided, so that the service life of the motor 300 is prolonged, and the service life of the electric screwdriver is prolonged.

Referring to fig. 1 and 3, the shock-absorbing mechanism includes a first shock-absorbing pad 100 and a second shock-absorbing pad 200. First shock pad 100 is located between gear box 400 of electronic screwdriver and the casing 600 of electronic screwdriver, and the inner wall of first shock pad 100 cooperatees with the periphery wall of gear box 400, and the outer wall of first shock pad 100 cooperatees with the inner wall of casing 600, and first shock pad 100 is close to motor 300 of electronic screwdriver. The second cushion 200 is disposed between the motor 300 of the electric screwdriver and the housing 600 of the electric screwdriver, the inner wall of the second cushion 200 is matched with the outer peripheral wall of the motor 300, the outer wall of the second cushion 200 is matched with the inner wall of the housing 600, and the second cushion 200 is far away from the gear box 400.

In one embodiment, the first shock absorbing pad 100 is adjacent to the connection of the motor 300 and the gear box 400, and the shock at the connection of the motor 300 and the gear box 400 is attenuated by the first shock absorbing pad 100. Second shock pad 200 keeps away from gear box 400 and is close to the brush of motor 300, weakens the vibrations of motor 300 afterbody through second shock pad 200, has not only reduced motor 300 and has transmitted the vibrations for the user through casing 600, has promoted the use and has experienced, has promoted carbon brush rectification effect moreover, and then has prolonged the life of equipment.

In one embodiment, referring to fig. 2 and 3, first vibration damper 100 is disposed between gear box 400 of the electric screwdriver and housing 600 of the electric screwdriver, and first vibration damper 100 is adjacent to motor 300 of the electric screwdriver. The second cushion 200 is disposed between the motor 300 of the electric screwdriver and the housing 600 of the electric screwdriver, and the second cushion 200 is adjacent to the gear box 400.

In this embodiment, the first and second shock absorbing pads 100 and 200 are integrally formed, and the motor 300 and the gear box 400 are integrally damped through the first and second shock absorbing pads 100 and 200, so that the vibration transmitted to the user by the motor 300 and the gear box 400 through the machine case 600 is also reduced, and the rectification effect of the carbon brush is improved.

In the above embodiment, the first cushion 100 and the second cushion 200 are made of flexible materials (such as rubber), the first cushion 100 is disposed around the peripheral wall of the gear box 400, and the second cushion 200 is disposed around the peripheral wall of the motor 300. it should be noted that the second cushion 200 cannot cover the air outlet 310 of the motor 300, so as to ensure that the heat dissipation of the motor 300 is good. First shock pad 100 and second shock pad 200 can be ring structure or polylith strip structure, and first shock pad 100 and second shock pad 200 can integrated into one piece on the casing 600 of electronic screwdriver, also can produce alone, then paste at the inner wall of casing 600. Can also be through setting up the support, the inner wall at built-in 600 is fixed to the support, first shock pad 100 and second shock pad 200 will through the direct mount in the casing, will damping mechanism be applicable to the electronic screwdriver of multiple specifications such as 3.6V, 7.2V on the market.

In some embodiments, as shown in connection with FIG. 4, the side of the first vibration-damping pad 100 adjacent to the gear box 400 of the electric screwdriver and the side of the second vibration-damping pad 200 adjacent to the motor 300 of the electric screwdriver are provided with serrations 130. In other embodiments, as shown in fig. 5, a mesh-shaped protrusion 120 is provided on a side of the first vibration damper 100 adjacent to the gear housing 400 of the electric screwdriver and a side of the second vibration damper 200 adjacent to the motor 300 of the electric screwdriver. In other embodiments, as shown in fig. 6, a hemispherical protrusion 110 is provided on a side of the first vibration damper 100 adjacent to the gear housing 400 of the electric screwdriver and a side of the second vibration damper 200 adjacent to the motor 300 of the electric screwdriver. Through this kind of structure setting, gear box 400's perisporium and first shock pad 100 interference fit, motor 300's perisporium and second shock pad 200 interference fit, the installation of being convenient for on the one hand makes first shock pad 100 chucking gear box 400, second shock pad 200 chucking motor 300, and on the other hand can strengthen the shock-absorbing performance of two shock pads, promotes the shock attenuation effect.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a damper of electronic screwdriver which characterized in that includes:

the first shock pad is arranged between a gear box of the electric screwdriver and a shell of the electric screwdriver, and the first shock pad is close to a motor of the electric screwdriver; and

and the second shock pad is connected with the first shock pad or arranged at intervals, and is arranged between the motor of the electric screwdriver and the shell of the electric screwdriver.

2. The motorized screwdriver as defined in claim 1, wherein said second dampening shoe is remote from said gear box.

3. The motorized screwdriver as defined in claim 1, wherein said second dampening shoe is proximate said gear box.

4. The motorized screwdriver as defined in claim 3, wherein said first and second dampening pads are integrally formed.

5. The electric screwdriver as defined in claim 1, wherein the first cushion has a protrusion formed thereon on a side thereof adjacent to the gear box of the electric screwdriver and the second cushion has a protrusion formed thereon on a side thereof adjacent to the motor of the electric screwdriver, the protrusions having a hemispherical shape.

6. The electric screwdriver as recited in claim 1, wherein a protrusion is formed on each of a side of the first cushion adjacent to the gear box of the electric screwdriver and a side of the second cushion adjacent to the motor of the electric screwdriver, and the protrusion is formed in a net shape.

7. The electric screwdriver as defined in claim 1, wherein the first cushion is provided with saw teeth on a side thereof adjacent to the gear box of the electric screwdriver and the second cushion is provided with saw teeth on a side thereof adjacent to the motor of the electric screwdriver.

8. The motorized screwdriver as defined in claim 1, wherein said first and second dampening pads are each made of a flexible material.

9. The motorized screwdriver as defined in claim 1, wherein each of said first and second dampening pads is integrally formed with a housing of said motorized screwdriver.

10. An electric screwdriver, comprising:

a vibration damping mechanism of an electric screwdriver according to any one of claims 1 to 9;

a housing;

the peripheral wall of the gear box is abutted to the shell through the first shock pad;

a motor, the peripheral wall of which is abutted against the casing through the second shock pad; and

one end of the driving shaft is in transmission connection with the power output end of the motor through the gear box, the other end of the driving shaft extends out of the shell, and the driving shaft can rotate around the central axis of the driving shaft under the driving of the motor.

Images