CN217620407U - Electric hammer - Google Patents

Abstract

The utility model discloses an electric hammer, include: a housing including a handle portion and a working portion; the impact mechanism comprises a cylinder, the cylinder comprises a cylinder body and a piston, and one end of the piston is connected with an impact assembly; the driving mechanism comprises a driving motor and a transmission assembly, and the transmission assembly is also connected with the other end of the piston so as to drive the piston to move back and forth along the axial direction of the impact assembly; the control assembly is in signal connection with the driving motor and comprises a second sensing piece and a control plate in signal connection with the second sensing piece, and the second sensing piece is positioned near the hammer; the second sensing piece is used for sensing the nailing depth of the piece to be struck, when the nailing depth reaches the preset depth, the second sensing piece sends a second sensing signal to the control board, and the control board sends a stop signal to the driving motor after receiving the second sensing signal so as to stop the driving motor; the problems that the electric quantity is wasted and the service life of the electric hammer is influenced due to the fact that the electric hammer is manually closed in the traditional mode can be solved.

Description

Electric hammer

Technical Field

The utility model relates to an electric hammer belongs to electric tool technical field.

Background

For the work scene that needs to use the iron nail, electric hammer is a comparatively instrument commonly used. In the prior art, a manual switch is often adopted to stop the electric hammer. However, such a stopping mode often requires a worker to firstly confirm the nailing condition of the nail, and then the electric hammer can be closed, and the electric hammer always works in the process of confirming the nailing condition, so that electric quantity waste can be caused, and the service life of the electric hammer can be influenced due to continuous impact of the impact assembly on the casing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric hammer can solve the electric quantity waste that traditional manual electronic hammer of closing and lead to and influence electric hammer life's problem.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an electric hammer comprising:

the electric hammer comprises a shell, a handle, a working part and a handle, wherein the shell comprises a handle part and a working part connected with the handle part, the handle part is provided with a switch for controlling the starting and stopping of the electric hammer, and the front end of the working part is provided with a hammer opening;

the impact mechanism is positioned in the shell and comprises a cylinder, the cylinder comprises a cylinder body and a piston positioned in the cylinder body, and one end of the piston is connected with an impact assembly used for striking a piece to be struck;

the driving mechanism is positioned in the shell and comprises a driving motor and a transmission assembly connected with an output shaft of the driving motor, and the transmission assembly is also connected with the other end of the piston so as to drive the piston to move back and forth along the axial direction of the impact assembly;

the control assembly is in signal connection with the driving motor and comprises a second sensing piece and a control board in signal connection with the second sensing piece, and the second sensing piece is located near the hammer; the second induction piece is used for inducing the nailing depth of the piece to be struck, when the nailing depth reaches the preset depth, the second induction piece sends a second induction signal to the control board, and the control board receives the second induction signal and then sends a stop signal to the driving motor so that the driving motor stops working.

Further, the second sensing member is an infrared sensor.

Further, the second sensing member is a distance measuring sensor.

Further, the impact assembly comprises a ram and a ram connected with the ram, the ram is further connected with the piston, the piston drives the ram through compressing air in the cylinder body, the ram strikes the member to be struck, and the axis of the ram coincides with the axis of the ram.

Furthermore, the ram is of a concave structure, a concave portion of the ram faces the ram, and one end of the ram is located in the concave portion.

Further, the hammer and the striker are integrally molded.

Furthermore, the casing still includes the base, be equipped with in the base and be equipped with the power supply module of the power supply of electric hammer.

Further, the power supply component comprises an external power supply interface.

The beneficial effects of the utility model reside in that: the control assembly is arranged and comprises a second sensing piece and a control panel, the second sensing piece is used for sensing the nailing depth of the piece to be struck, when the nailing depth reaches the preset depth, the second sensing piece sends a second sensing signal to the control panel, and the control panel sends a stop signal to the driving motor after receiving the second sensing signal so as to stop the driving motor from working; in addition, the steps of judging the nailing condition by the staff are reduced, so that the workload of the staff is reduced, and the accuracy of the nailing depth of the piece to be struck is improved.

The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description will be given of preferred embodiments of the present invention in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic view of an electric hammer according to an embodiment of the present application;

fig. 2 is a second schematic structural view of the electric hammer according to an embodiment of the present application;

fig. 3 is a third schematic structural view of the electric hammer according to an embodiment of the present application.

100-electric hammer, 200-to-be-hit part, 1-shell, 11-handle part, 12-working part, 121-accommodating space, 1211-upper space, 1212-middle space, 1213-lower space, 122-hammer mouth, 13-switch, 14-base, 2-impact mechanism, 21-air cylinder, 211-cylinder body, 2111-air hole, 22-impact component, 221-hammer, 222-ram, 2221-first rod body, 2222-second rod body, 2223-connecting part, 23-positioning component, 24-limiting component, 241-abutting part, 242-limiting pipeline, 3-driving mechanism, 31-driving motor, 32-transmission component, 321-oscillating bearing, 4-control component, 41-first sensing component, 42-second sensing component, 43-control panel, 5-supporting component and 6-power supply component.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The following detailed description of the present application will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present application, but are not intended to limit the scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the creation of the present application, the meaning of "a plurality" is two or more unless otherwise stated.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific cases.

Referring to fig. 1 to 3, a preferred embodiment of the present application provides an electric hammer 100, which includes a housing 1, and an impact mechanism 2, a driving mechanism 3 and a control assembly 4 located in the housing 1, wherein the control assembly 4 is configured to control the driving mechanism 3 to operate, so that the driving mechanism 3 drives the impact mechanism 2 to operate, and further, the to-be-hit piece 200 is hit. Specifically, the impact mechanism 2 includes a cylinder 21, and the cylinder 21 includes a cylinder body 211 and a piston (not shown) located in the cylinder body 211, and one end of the piston is connected with an impact assembly 22 for striking the member 200 to be struck. The driving mechanism 3 comprises a driving motor 31 and a transmission assembly 32 connected with an output shaft of the driving motor 31, and the transmission assembly 32 is further connected with the other end of the piston to drive the piston to move back and forth along the axial direction of the impact assembly 22. Further, the transmission assembly 32 includes a swing bearing 321, and the swing bearing 321 is respectively connected to the output end of the driving motor 31 and the piston to drive the piston to move back and forth along the axial direction of the impact assembly 22. The driving motor 31 drives the transmission assembly 32 to move, so that the transmission assembly 32 drives the piston to move back and forth in the cylinder body 211, air in the cylinder body 211 is compressed, and the compressed air enables the impact assembly 22 to strike the piece 200 to be struck due to increased pressure.

In the present embodiment, the member to be struck 200 is a screw. Of course, in other embodiments, the striking object 200 may be other, and the present application does not limit the striking object 200.

The housing 1 includes a handle 11 and a working portion 12 connected to the handle 11. The handle part 11 is used for a worker to hold the electric hammer 100 conveniently when the worker uses the electric hammer. The handle 11 is provided with a switch 13 for controlling the electric hammer 100 to start or stop, and the switch 13 is specifically used for controlling the driving mechanism 3 to work. In this embodiment, the switch 13 is a push button structure for controlling the on/off of the driving motor 31. Of course, in other embodiments, the type of the switch 13 may be other, for example, the switch 13 may also be configured in a touch structure, and the application does not limit the type of the switch 13.

The working portion 12 has a receiving space 121 therein, and the impact mechanism 2, the driving mechanism 3 and the control assembly 4 are all located in the receiving space 121. Further, the accommodating space 121 includes an upper space 1211, a middle space 1212, and a lower space 1213, the impact structure 2 is located in the upper space 1211, the driving mechanism 3 is located in the middle space 1212, and at least a portion of the control assembly 4 is located in the lower space 1213.

The front end of the working part 12 is provided with a hammer opening 122, and before the electric hammer 200 starts to work, the member 200 to be hammered needs to be placed into the working part 12 from the hammer opening 122.

The housing 1 comprises the above structure and a base 14, and a power supply assembly 6 for supplying power to the electric hammer 100 is arranged in the base 14. In this embodiment, the power supply assembly 6 is a battery pack. Of course, in other embodiments, the power supply assembly 6 may be other, such as the power supply assembly 6 being an external power supply, in which case the power supply assembly 6 includes an external power interface (not shown).

The impact assembly 22 includes a hammer 221 and a ram 222 connected to the hammer 221. The ram 221 is also connected to a piston, and the piston drives the ram 221 and the ram rod 222 to strike the member 200 to be struck by compressing the air in the cylinder 211. It should be noted that the axis of the hammer 221 and the axis of the ram 222 coincide to enable the hammer 221 and the ram 222 to better transmit the striking force of the air in the cylinder 211 to the member to be struck 200.

In the present embodiment, the hammer 221 has a concave structure, a concave portion of the hammer 221 is disposed toward the striker 222, and one end of the striker 222 is located in the concave portion. Of course, in other embodiments, the structure of the striker 221 and the striker 222 may be other, and the structure of the striker 221 and the striker 222 is not limited in the present application. Alternatively, the hammer 221 and the striker 222 are integrally molded. This is done to minimize the loss of force on the ram 221 and the striker 222. Of course, the ram 221 and the ram 222 may also be of a split construction.

The impact mechanism 2 further comprises a positioning assembly 23 and a limiting assembly 24. The positioning assembly 23 is located outside the cylinder body 211 to limit the cylinder body 211 from shaking, so as to ensure the stability of the impact mechanism 2 during operation.

The stop assembly 24 is positioned adjacent the hammer opening 122 to limit forward movement of the impact assembly 22. The depth of nailing can be controlled by arranging the limiting assembly.

In one example, the limit assembly 24 abuts the ram 221 when the limit assembly 24 limits movement of the ram 221. Specifically, the limiting component 24 includes a supporting portion 241, the supporting portion 241 is formed by protruding inward from the inner wall of the housing 1, a through hole (not numbered) for the ram 222 to move back and forth is formed in the middle of the supporting portion 241, the inner diameter of the through hole is larger than the outer diameter of the ram 222 and smaller than the outer diameter of the ram 221, that is, the supporting portion 241 limits the forward movement of the impact component 22 by supporting with the ram 221.

In another example, when the restraining assembly 24 restrains the striker 222 from moving, the restraining assembly 24 abuts against the striker 222. Specifically, the striking rod 222 includes a first rod 2221, a second rod 2222, and a connecting portion 2223 connecting the first rod 2221 and the second rod 2222, the first rod 2221 is connected to the hammer 221, the second rod 2222 strikes the to-be-struck member 200, and an outer diameter of the connecting portion 2223 is larger than an outer diameter of the second rod 2222. The limiting assembly 24 comprises a limiting pipe 242, the limiting pipe 242 extends inwards from the hammer 122, the axis of the limiting pipe 242 coincides with the axis of the impact assembly 22, and the inner diameter of the limiting pipe 242 is larger than the outer diameter of the second rod 2222 and smaller than the outer diameter of the connecting portion 2223, that is, the limiting pipe 242 abuts against the connecting portion 2223 to limit the impact assembly 22 to move forwards.

In the prior art, the electric hammer 100 is usually stopped by a manual switch, but the electric hammer 100 can be closed only after a worker first confirms the nailing condition of the member 200 to be hammered by the worker in such a stopping manner, and the electric hammer 100 always works in the process of confirming the nailing condition, so that not only is electric quantity wasted, but also the service life of the electric hammer 100 is influenced due to the continuous impact of the impact assembly 22 on the casing 1. In order to solve the problem, the electric hammer 100 is stopped, and when the electric hammer 100 finishes nailing the to-be-hit member 200, the electric hammer can be automatically stopped without manual operation of a worker, so that the electric quantity of a battery is saved, and the service life is prolonged.

In one example, the cylinder 211 is provided with an air hole 2111, the impact assembly 22 includes an impact state and a stop state, when the impact assembly 22 is in the impact state, the impact assembly 22 blocks the air hole 2111 to close the cylinder 211, and the piston compresses air in the cylinder 211 to drive the impact assembly 22 to strike the member to be struck 200; when the striking assembly 22 is in the stopped state, the striking assembly 22 opens the air hole 2111 to discharge the air in the cylinder 211, and the striking assembly 22 stops striking the member to be struck 200.

Alternatively, the number of the air holes 2111 is only one, and one air hole 2111 is located on the side wall of the cylinder body 211.

When the number of the air holes 2111 is only one, the hammer 221 has a first end (not numbered) adjacent to the piston and a second end (not numbered) opposite to the first end adjacent to the member to be struck 200. When the electric hammer 100 is not in operation, the first end of the hammer 221 is located at the initial position, the vertical distance between the initial position and the air hole 2111 is a first distance, and the nailing depth of the member to be struck 200 is equal to the first distance. With this arrangement, the depth of penetration of the member to be struck 200 can be controlled by changing the positions of the air holes 2111.

Alternatively, the air holes 2111 have several, and several air holes 2111 are distributed in the circumferential direction of the cylinder block 211.

In another example, the start and stop of the electric hammer 100 may be controlled by the control assembly 4. Specifically, the control assembly 4 is in signal connection with the driving motor 31, the control assembly 4 includes a first sensing member 41 and a control board 43 in signal connection with the first sensing member 41, and the first sensing member 41 is located near the hammer opening 122. When the impact assembly 22 touches the first sensing member 41, the first sensing member 41 sends a first sensing signal to the control board 43, and the control board 43 sends a stop signal to the driving motor 31 after receiving the first sensing signal, so that the driving motor 31 stops working.

Alternatively, the first sensing member 41 may be a pressure sensor. At this time, after the impact assembly 22 touches the pressure sensor, the pressure sensor will send a pressure signal to the control board 43, and the control board 43 sends a stop signal to the driving motor 31 after receiving the pressure signal, so as to stop the driving motor 31. Of course, the first sensing element 41 may be other than a pressure sensor, for example, the first sensing element 41 may also be a distance measuring sensor, and the like, and the application does not limit the type of the first sensing element 41.

In yet another example, the start and stop of the electric hammer 100 may be controlled by the control assembly 4. Specifically, the control assembly 4 includes a second sensing member 42 and a control board 43 in signal connection with the second sensing member 42, the second sensing member 42 is located near the hammer opening 122, and the second sensing member 42 is used for sensing the driving depth of the member to be struck 200. When the nailing depth reaches the preset depth, the second sensing piece 42 sends a second sensing signal to the control board 43, and the control board 43 sends a stop signal to the driving motor 31 after receiving the second sensing signal, so that the driving motor 31 stops working.

Optionally, the second sensing member 42 is a distance measuring sensor. At this time, the distance measuring sensor measures the first linear distance between the distance measuring sensor and the object, the nailing depth of the piece to be struck 200 can be obtained by subtracting the first linear distance from the length of the piece to be struck 200, when the distance measuring sensor measures that the nailing depth is equal to the preset depth, a second induction signal is sent to the control board 43, and the control board 43 sends a stop signal to the driving motor 31 according to the received second induction signal, so that the driving motor 31 stops working. Of course, the second sensing element 42 may be other than a distance measuring sensor, for example, the second sensing element 42 may also be an infrared sensor, and the application does not limit the type of the second sensing element 42.

In the process of driving the member to be driven 200 into the object by the electric hammer 100, the member to be driven 200 is often driven askew, and the final driving effect is greatly affected. To solve this problem, in the present embodiment, the electric hammer 100 further includes a supporting assembly 5, and the supporting assembly 5 is located near the hammer opening 122 and is used for supporting the member to be stricken 200 when the impacting assembly 22 strikes the member to be stricken 200, so as to prevent the moving path of the member to be stricken 200 from deviating from the original path, where the original path coincides with the axis of the impacting assembly 22.

The support assembly 5 is located at the hammer opening 122, and the support assembly 5 includes a support tube (not shown) extending outwardly from the hammer opening 122, and an axis of the support tube coincides with an axis of the impact assembly 22. In order to ensure that the support tube can support the striking member 200, in one embodiment, the inner diameter of the support tube is equal to the outer diameter of the striking member 200. Further, when the member to be struck 200 is a screw, the screw has a head and a tail, the outer diameter of the tail being equal to the inner diameter of the support pipe.

In the present application, in addition to supporting the striking element 200 by the support component 5, the striking element 200 may be supported by the above-mentioned limiting pipe 242, and at this time, the inner diameter of the limiting pipe 242 is equal to the outer diameter of the striking element 200.

In conclusion, the electric hammer is provided, the control assembly is arranged and comprises a second sensing piece and a control panel, the second sensing piece is used for sensing the nailing depth of a piece to be struck, when the nailing depth reaches the preset depth, the second sensing piece sends a second sensing signal to the control panel, and the control panel sends a stop signal to the driving motor after receiving the second sensing signal so as to stop the driving motor; in addition, the steps of judging the nailing condition by the staff are reduced, so that the workload of the staff is reduced, and the accuracy of the nailing depth of the piece to be struck is improved.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the 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 (8)

1. An electric hammer, comprising:

the electric hammer comprises a shell, a handle part and a working part, wherein the shell comprises a handle part and a working part connected with the handle part, the handle part is provided with a switch for controlling the starting and stopping of the electric hammer, and the front end of the working part is provided with a hammer port;

the impact mechanism is positioned in the shell and comprises a cylinder, the cylinder comprises a cylinder body and a piston positioned in the cylinder body, and one end of the piston is connected with an impact assembly used for striking a piece to be struck;

the driving mechanism is positioned in the shell and comprises a driving motor and a transmission assembly connected with an output shaft of the driving motor, and the transmission assembly is also connected with the other end of the piston so as to drive the piston to move back and forth along the axial direction of the impact assembly;

the control assembly is in signal connection with the driving motor and comprises a second sensing piece and a control board in signal connection with the second sensing piece, and the second sensing piece is located near the hammer; the second induction part is used for inducing the nailing depth of the part to be struck, when the nailing depth reaches the preset depth, the second induction part sends a second induction signal to the control panel, and the control panel receives the second induction signal and then sends a stop signal to the driving motor, so that the driving motor stops working.

2. The electric hammer of claim 1, wherein the second sensing member is an infrared sensor.

3. The electric hammer of claim 1, wherein the second sensing member is a distance measuring sensor.

4. The electric hammer according to claim 1, wherein the impact assembly includes a hammer and a ram connected to the hammer, the hammer is further connected to the piston, the piston drives the hammer and the ram to strike the member to be struck by compressing air in the cylinder, and an axis of the hammer coincides with an axis of the ram.

5. The electric hammer of claim 4, wherein the ram is of a concave structure, the recessed portion of the ram is disposed toward the ram, and one end of the ram is located in the recessed portion.

6. The electric hammer of claim 5, wherein the ram and the ram are integrally formed.

7. The electric hammer of claim 1, wherein the housing further comprises a base, and a power supply assembly is disposed within the base for powering the electric hammer.

8. The electric hammer of claim 7, wherein the power supply assembly includes an external power interface.

Images