CN218397878U

CN218397878U - Impact wrench

Info

Publication number: CN218397878U
Application number: CN202222106307.2U
Authority: CN
Inventors: 彭小湖
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-01-31
Anticipated expiration: 2032-08-10

Abstract

An impact wrench comprises a shell, a motor positioned in the shell, an output shaft driven by the motor, and a fastener and an elastic sheet positioned in the shell. The shell comprises a main body part and a holding part connected to the lower end of the main body part, the main body part is provided with a protruding part protruding downwards, the protruding part is contained at the upper end of the holding part, the fastening part comprises a first fastening part located at the upper end of the holding part and a second fastening part fixed to the middle section of the holding part, and the protruding part is sleeved on the first fastening part. The elastic piece is provided with an upper fixing piece positioned at the upper end of the holding part and a lower fixing piece positioned at the middle section of the holding part, the upper fixing piece is attached to the side surface of the protruding part and sleeved on the first fastening piece, and the lower fixing piece is sleeved on the second fastening piece; when the impact wrench works, the elastic sheet weakens the vibration transmitted from the main body part to the holding part, and reduces the vibration impact, thereby achieving the vibration reduction effect. Meanwhile, the elastic sheet is a spring steel sheet and cannot age to lose elasticity.

Description

Impact wrench

[ technical field ]

The utility model relates to a handheld electric tool technical field, in particular to impact wrench with shock-absorbing structure.

[ background art ]

The existing impact wrench has the advantages that in the using process, due to the fact that no damping design is adopted, the impact wrench can cause severe vibration when being subjected to impact, communication of a battery pack and structural stability of the battery pack are seriously affected, and accordingly the whole machine cannot work. Simultaneously, along with the moment of torsion of impact wrench does bigger and bigger, under the condition of big torsion, the vibrations of complete machine can transmit the battery package to lead to battery package and impact wrench's handle to appear gluing phenomenon easily when using for a long time, and arouse the inserted sheet wearing and tearing of battery package. Meanwhile, the device can also generate great vibration to the arms of the operator, so that the experience of the operator is influenced.

Accordingly, there is a need for an improved impact wrench that overcomes the deficiencies of the prior art.

[ contents of utility model ]

Not enough to prior art, the utility model aims to provide an impact wrench with shock-absorbing structure to solve the violent problem of battery package vibrations.

The utility model provides a technical scheme that prior art problem adopted is: an impact wrench includes a housing, a motor located within the housing, an output shaft driven by the motor, and a fastener located within the housing. The shell comprises a main body part accommodating the motor and a holding part connected to the lower end of the main body part, the main body part is provided with a protruding part protruding downwards from the bottom, the protruding part is accommodated at the upper end of the holding part, the fastening part comprises a first fastening part located at the upper end of the holding part and a second fastening part fixed to the middle section of the holding part, and the protruding part is sleeved on the first fastening part. The impact wrench comprises an elastic sheet fixed in the holding part, the elastic sheet is provided with an upper fixing sheet located at the upper end of the holding part, a lower fixing sheet located at the middle section of the holding part and a connecting sheet for connecting the upper fixing sheet and the lower fixing sheet, the upper fixing sheet is attached to the side face of the protruding part and sleeved on the first fastener, and the lower fixing sheet is sleeved on the second fastener.

The further improvement scheme is as follows: go up the stationary blade laminate in the horizontal side of protruding portion just is equipped with along transversely running through go up the through-hole of stationary blade, the protruding portion is equipped with from horizontal side inwards sunken mounting hole, the through-hole correspond to the mounting hole sets up, first fastener passes go up the stationary blade the through-hole just is connected to in the mounting hole, so that it is fixed extremely to go up the stationary blade on the protruding portion.

The further improvement scheme is as follows: the utility model discloses a handle structure, including connection piece, protruding portion, elastic sheet, last stationary blade, the portion of gripping includes the first handle half shell and the second handle half shell of mutual lock, the protruding portion with the elastic sheet all is located first handle half shell with between the second handle half shell, just the elastic sheet go up the stationary blade with the lower stationary blade is certainly the upper and lower both ends of connection piece are along syntropy extension setting.

The further improvement scheme is as follows: the first handle half shell is provided with a pin post protruding from the inner wall surface towards the lower fixing piece, the pin post abuts against the surface of the lower fixing piece and is provided with a threaded hole which is recessed inwards along the transverse direction, the lower fixing piece is provided with a through hole corresponding to the threaded hole, and the second fastening piece penetrates through the through hole of the lower fixing piece and is connected into the threaded hole, so that the lower fixing piece is fixed to the first handle half shell.

The further improvement scheme is as follows: the main body part is provided with a motor shell for accommodating the motor and a metal head shell connected to the front end of the motor shell, the metal head shell is fixed to the motor shell in a screw fixing mode, and the motor shell and the metal head shell are both provided with protruding parts protruding downwards.

The further improvement scheme is as follows: the metal head shell is characterized in that the holding part is provided with a sleeve which is sleeved on the periphery of the metal head shell, the first handle half shell is provided with a first sleeve which is positioned at the upper end, the second handle half shell is provided with a second sleeve which is positioned at the upper end, the first sleeve and the second sleeve cover the periphery of the metal head shell together, and the top of the first sleeve and the top of the second sleeve are fixed together in a screw connection mode.

The further improvement scheme is as follows: the impact wrench comprises a transmission mechanism located between the motor and the output shaft, and the motor drives the output shaft to operate through the transmission mechanism.

The further improvement scheme is as follows: the transmission mechanism and the output shaft are contained in the metal head shell, and the output shaft partially extends out of the metal head shell.

The further improvement scheme is as follows: the casing including connect in the foot board portion of the lower extreme of portion of gripping, the fastener is including being fixed in third fastener on the foot board portion, the foot board portion is including connecting in the first foot board portion of the lower extreme of first handle half shell and connecting in the second foot board portion of the lower extreme of second handle half shell, the third fastener passes the second foot board portion and is connected to first foot board portion, so that the second foot board portion with the fixed above-mentioned foot board portion of formation of first foot board portion.

The further improvement scheme is as follows: the impact wrench comprises a main controller located in the foot plate portion, and the main controller is electrically connected to the motor.

Compared with the prior art, the utility model discloses following beneficial effect has: the impact wrench comprises an elastic sheet fixed in the holding part, and the elastic sheet is provided with an upper fixing sheet positioned at the upper end of the holding part, a lower fixing sheet positioned at the middle section of the holding part and a connecting sheet for connecting the upper fixing sheet and the lower fixing sheet; the upper fixing piece is attached to the side face of the protruding portion and sleeved on the first fastening piece, so that the upper fixing piece is fixed to the protruding portion; the lower fixing plate is sleeved on the second fastening piece so as to fix the lower fixing plate on the first handle half shell; when the impact wrench works, the elastic sheet can weaken the vibration transmitted from the main body part to the holding part, so that the vibration impact is reduced, and the damping effect is achieved. Simultaneously, the elastic sheet is a spring steel sheet, and the impact wrench cannot age and lose elasticity while ensuring the rigidity of the impact wrench.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

FIG. 1 is a perspective view of an impact wrench in accordance with a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the impact wrench of FIG. 1;

FIG. 3 is a perspective view of the impact wrench of FIG. 1 with the handle half shell removed;

fig. 4 is a partially exploded view of the impact wrench of fig. 3.

The meaning of the reference symbols in the figures:

100. impact wrench 10, housing 101, motor case 102, metal head case 11, main body portion 110, protruding portion 111, mounting hole 12, grip portion 121, first handle half case 122, second handle half case 123, pin 124, threaded hole 125, second pin 13, foot plate portion 14, operation button 20, motor 30, transmission mechanism 40, output shaft 50, fastener 51, first fastener 52, second fastener 53, third fastener 60, elastic sheet 61, upper fixing sheet 62, lower fixing sheet 63, connecting sheet 64, through hole 70, battery pack

[ detailed description of the invention ]

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper," "lower," "front," "rear," and the like, which indicate orientation or positional relationships, are used solely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced devices/elements must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Referring to fig. 1 to 4, an impact wrench 100 for inserting a working head (not shown) according to a preferred embodiment of the present invention is shown. The impact wrench 100 includes a housing 10, and a motor 20, a transmission mechanism 30 and an output shaft 40 located in the housing 10, wherein the transmission mechanism 30 is located between the motor 20 and the output shaft 40. The transmission mechanism 30 is driven by the motor 20, and the output shaft 40 is connected to the front end of the transmission mechanism 30, so that the motor 20 drives the output shaft 40 to operate through the transmission mechanism 30.

The housing 10 includes a vertically long main body 11, a grip portion 12 connected to a lower end of the main body 11, and a leg plate portion 13 located below the grip portion 12. The main body 11 has a receiving cavity (not numbered), the motor 20, the transmission mechanism 30 and the output shaft 40 are received in the receiving cavity of the main body 11, and the output shaft 40 extends out of the main body 11. The output shaft 40 is partially exposed at the front end of the housing 10, and in the present embodiment, the output shaft 40 is a wrench head at least partially exposed at the front end of the body 11.

As shown in fig. 2, the main body 11 has a plurality of protrusions 110 protruding downward from the bottom, and the protrusions 110 are fixed on the upper end of the handle 12 to fix the main body 11 on the upper end of the handle 12. In the present embodiment, the main body 11 includes a motor housing 101 for housing the motor 20 and a metal head housing 102 connected to a front end of the motor housing 101, the transmission mechanism 30 and the output shaft 40 are both housed in the metal head housing 102, and the output shaft 40 partially extends out of a front end of the metal head housing 102. Meanwhile, the metal head case 102 is fixed to the motor case 101 in a screw fixing manner, and the motor case 101 and the metal head case 102 each have the above-mentioned protrusion 110, so that the motor case 101 and the metal head case 102 are both fixed to the upper end of the grip portion 12.

The grip 12 includes a first handle half 121 and a second handle half 122 that are engaged with each other, and the protrusion 110 is located between the first handle half 121 and the second handle half 122. The holding portion 12 is provided with a sleeve sleeved on the periphery of the metal head shell 102, specifically, the first handle half shell 121 is provided with a first sleeve located at the upper end, the second handle half shell 122 is provided with a second sleeve located at the upper end, the first sleeve and the second sleeve cover the periphery of the metal head shell 102 together, and the tops of the first sleeve and the second sleeve are fixed together in a screw connection manner so as to fix the main body portion 11 on the holding portion 12.

Referring to fig. 3 to 4, the impact wrench 100 includes a fastening member 50 located in the housing 10, the fastening member 50 includes a first fastening member 51 located at an upper end of the grip portion 12, a second fastening member 52 fixed to a middle section of the grip portion 12, and a third fastening member 53 fixed to the foot plate portion 13, and the protrusion portion 110 is sleeved on the first fastening member 51.

The impact wrench 100 includes a resilient tab 60 located within the gripping portion 12, the resilient tab 60 being located between the first handle half 121 and the second handle half 122. The elastic piece 60 is provided with an upper fixing piece 61 positioned at the upper end of the holding part 12, a lower fixing piece 62 positioned at the middle section of the holding part 12, and a connecting piece 63 connecting the upper fixing piece 61 and the lower fixing piece 62. In the present embodiment, the upper fixing piece 61 and the lower fixing piece 62 of the elastic piece 60 are provided to extend in the same direction from both upper and lower ends of the connecting piece 63.

The upper fixing piece 61 is attached to the side surface of the protruding portion 110 and sleeved on the first fastening piece 51, so that the upper fixing piece 61 is fixed to the protruding portion 110; the lower fixing plate 62 is sleeved on the second fastening member 52, so that the lower fixing plate 61 is fixed on the first handle half shell 121, and the space between the main body 11 and the grip 12 of the impact wrench 100 is buffered and damped by the elastic plate 60. When the impact wrench 100 is operated, the elastic piece 60 can reduce the vibration transmitted from the main body 11 to the grip 12, thereby reducing the vibration impact and achieving the shock absorption effect. Meanwhile, the elastic piece 60 is a spring steel piece, which does not age to lose elasticity while ensuring rigidity of the impact wrench 100.

Specifically, the upper fixing plate 61 is attached to a lateral side of the protrusion 110 and provided with a through hole 64 penetrating the upper fixing plate 61 in a lateral direction, the protrusion 110 is provided with a mounting hole 111 recessed inward from the lateral side, the through hole 64 is disposed corresponding to the mounting hole 111, and the first fastening member 51 penetrates the through hole 64 of the upper fixing plate 61 and is coupled into the mounting hole 111 so that the upper fixing plate 61 is fixed to the protrusion 110.

The first handle half shell 121 is provided with a pin 123 protruding from the inner wall surface toward the lower fixing plate 62, the pin 123 abuts against the surface of the lower fixing plate 62 and is provided with a threaded hole 124 recessed inwards along the transverse direction, the lower fixing plate 62 is provided with a through hole 64 corresponding to the threaded hole 124, and the second fastener 52 passes through the through hole 64 of the lower fixing plate 62 and is connected into the threaded hole 124, so that the lower fixing plate 62 is fixed on the first handle half shell 121.

As shown in fig. 4, the foot plate portion 13 is connected to the lower end of the holding portion 12 and includes a first foot plate portion connected to the lower end of the first handle half-shell 121 and a second foot plate portion connected to the lower end of the second handle half-shell 122, the first foot plate portion is provided with a second pin 125 protruding toward the second foot plate portion, the third fastener 53 passes through the second foot plate portion and is connected to the second pin 125 of the first foot plate portion, so that the second foot plate portion and the first foot plate portion are fixed to form the foot plate portion 13, and the first handle half-shell 121 and the second handle half-shell 122 are fixed to form the holding portion 12, which is convenient to install and detach and is convenient to use.

The grip portion 12 is used for holding when a user operates the impact wrench, and is provided with an operation button 14 located below the main body portion 11, and the operation button 14 is operated by the user to control the start and stop of the operation of the impact wrench 100. The impact wrench 100 further includes a main controller (not numbered) in the footboard 13 and a battery pack 70 inserted into a lower end of the footboard 13, the battery pack 70 being used to supply power to the impact wrench 100. The main controller is electrically connected to the motor 20 and the operation button 14, so that a user can control the start and stop of the motor 20 of the impact wrench 100 by pressing the operation button 14.

In the present invention, the impact wrench 100 includes an elastic sheet 60 fixed in the holding portion 12, the elastic sheet 60 is provided with an upper fixing sheet 61 located at the upper end of the holding portion 12, a lower fixing sheet 62 located at the middle section of the holding portion 12, and a connecting sheet 63 connecting the upper fixing sheet 61 and the lower fixing sheet 62. The upper fixing piece 61 is attached to the side surface of the protruding portion 110 and sleeved on the first fastening piece 51, so that the upper fixing piece 61 is fixed to the protruding portion 110; the lower fixing plate 62 is sleeved on the second fastening member 52, so that the lower fixing plate 62 is fixed to the first handle half-shell 121. When the impact wrench 100 is operated, the elastic piece 60 can reduce the vibration transmitted from the main body 11 to the grip 12, thereby reducing the vibration impact and achieving the shock absorption effect. Meanwhile, the elastic piece 60 is a spring steel piece, which does not age to lose elasticity while ensuring rigidity of the impact wrench 100.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that many alternatives to the impact wrench are possible without departing from the spirit and scope of the present invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. An impact wrench comprises a shell, a motor, an output shaft and a fastener, wherein the motor is positioned in the shell, the output shaft is driven by the motor, the fastener is positioned in the shell, the shell comprises a main body part for accommodating the motor and a holding part connected to the lower end of the main body part, the main body part is provided with a protruding part protruding downwards from the bottom, the protruding part is accommodated in the upper end of the holding part, the fastener comprises a first fastener positioned at the upper end of the holding part and a second fastener fixed at the middle section of the holding part, and the protruding part is sleeved on the first fastener; the method is characterized in that: the impact wrench comprises an elastic sheet fixed in the holding part, the elastic sheet is provided with an upper fixing sheet located at the upper end of the holding part, a lower fixing sheet located at the middle section of the holding part and a connecting sheet for connecting the upper fixing sheet and the lower fixing sheet, the upper fixing sheet is attached to the side face of the protruding part and sleeved on the first fastener, and the lower fixing sheet is sleeved on the second fastener.

2. The impact wrench of claim 1, wherein: go up the stationary blade laminate in the horizontal side of protruding portion just is equipped with along transversely running through go up the through-hole of stationary blade, the protruding portion is equipped with from horizontal side inwards sunken mounting hole, the through-hole correspond to the mounting hole sets up, first fastener passes go up the stationary blade the through-hole just is connected to in the mounting hole, so that it is fixed to go up the stationary blade on the protruding portion.

3. The impact wrench of claim 1, wherein: the holding part comprises a first handle half shell and a second handle half shell which are mutually buckled, the protruding part and the elastic sheet are both located between the first handle half shell and the second handle half shell, and the elastic sheet is provided with an upper fixing sheet and a lower fixing sheet which are arranged from the upper end and the lower end of the connecting sheet in a same direction.

4. The impact wrench of claim 3, wherein: the first handle half shell is equipped with from the internal face towards the protruding round pin post of stretching of stationary blade down, round pin post butt in the surface of stationary blade just is equipped with along horizontal inside sunken screw hole down, the stationary blade is equipped with corresponding to the through-hole of screw hole down, the second fastener passes down the stationary blade the through-hole just is connected to in the screw hole, so that the stationary blade is fixed to down on the first handle half shell.

5. The impact wrench of claim 3, wherein: the main body part is provided with a motor shell for accommodating the motor and a metal head shell connected to the front end of the motor shell, the metal head shell is fixed to the motor shell in a screw fixing mode, and the motor shell and the metal head shell are both provided with protruding parts protruding downwards.

6. The impact wrench of claim 5, wherein: the metal head shell is characterized in that the holding part is provided with a sleeve which is sleeved on the periphery of the metal head shell, the first handle half shell is provided with a first sleeve which is positioned at the upper end, the second handle half shell is provided with a second sleeve which is positioned at the upper end, the first sleeve and the second sleeve cover the periphery of the metal head shell together, and the top of the first sleeve and the top of the second sleeve are fixed together in a screw connection mode.

7. The impact wrench of claim 5, wherein: the impact wrench comprises a transmission mechanism located between the motor and the output shaft, and the motor drives the output shaft to operate through the transmission mechanism.

8. The impact wrench of claim 7, wherein: the transmission mechanism and the output shaft are contained in the metal head shell, and the output shaft partially extends out of the metal head shell.

9. The impact wrench of claim 3, wherein: the casing including connect in the foot board portion of the lower extreme of portion of gripping, the fastener is including being fixed in third fastener on the foot board portion, the foot board portion is including connecting in the first foot board portion of the lower extreme of first handle half shell and connecting in the second foot board portion of the lower extreme of second handle half shell, the third fastener passes the second foot board portion and is connected to first foot board portion, so that the second foot board portion with the fixed above-mentioned foot board portion of formation of first foot board portion.

10. The impact wrench of claim 9, wherein: the impact wrench comprises a main controller located in the foot plate portion, and the main controller is electrically connected to the motor.