CN106553159B

CN106553159B - Electric tool

Info

Publication number: CN106553159B
Application number: CN201510628047.7A
Authority: CN
Inventors: 许春鹏; 黄也乐
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2015-09-28
Filing date: 2015-09-28
Publication date: 2020-11-17
Anticipated expiration: 2035-09-28
Also published as: CN106553159A

Abstract

The present invention provides an electric tool including: a housing having a first end and a second end; a motor mounted within the housing, the motor having a first axis of rotation; the working head is arranged at the first end of the shell and is provided with a second rotating axis, and the first rotating axis and the second rotating axis are arranged in a different surface mode; the battery pack is obliquely arranged on the second end of the shell; first rotation axis and second rotation axis dislocation set promptly, can guarantee electric tool's compact structure like this, comfort level when improving electric tool and using simultaneously, the user one-hand operation of being convenient for, easily the user uses in narrow and small space, makes things convenient for the plug of battery package, and the user of being convenient for uses.

Description

Electric tool

Technical Field

The invention relates to the field of electric equipment, in particular to an electric tool.

Background

Among the present electric tool, the axis of rotation of working head is on a parallel with the axis of motor, and grip electric tool through independent handle, can increase electric tool's overall dimension like this, make electric tool's structure great, the packing and the transportation of electric tool of being not convenient for, still can influence the contact of working head and work piece, the working head of being not convenient for is used on the work piece, influence the comfort level that the user used, and simultaneously, the one-hand operation of being not convenient for, be not convenient for use in narrow and small space, it is inconvenient to carry, the user of being not convenient for uses.

Disclosure of Invention

In view of the above, it is necessary to provide an electric power tool which is compact in structure, improves comfort in use, and is convenient for a user to operate with one hand and use in a narrow space, in order to solve the problem that the conventional electric power tool has a large structural size.

The above purpose is realized by the following technical scheme:

a power tool, comprising:

a housing having a first end and a second end;

a motor mounted within the housing, the motor having a first axis of rotation;

the working head is arranged at the first end of the shell and is provided with a second rotating axis, and the first rotating axis and the second rotating axis are arranged in a different surface mode; and

a battery pack disposed at the second end of the housing in an inclined manner.

In one embodiment, the horizontal plane in which the first axis of rotation lies divides the housing into a first section and a second section, the first section being located above the second section and the working head being located on the second section of the housing.

In one embodiment, a portion of the battery pack is located on the second portion of the chassis and another portion of the battery pack is located on the first portion.

In one embodiment, the distance from the battery pack on the second section to the working head is smaller than the distance from the battery pack on the first section to the working head.

In one embodiment, the end of the battery pack is flush with or lower than the surface of the chassis.

In one embodiment, the electric tool further comprises a bottom plate, the bottom plate is movably connected with the machine shell, the working head is located at the lowest position, and one end of the battery pack on the second portion is higher than the bottom plate.

In one embodiment, the raised part at one end of the battery pack is 1/50-3/4 of the diameter of the working head.

In one embodiment, the inclined surface of the battery pack during plugging and unplugging movement on the shell is a plugging surface;

the plugging surface is intersected with the first rotating axis, an included angle alpha exists between the plugging surface and the first rotating axis, and the range of the included angle alpha is more than 90 degrees.

In one embodiment, the included angle between the plugging surface and the first rotation axis is 10 degrees < alpha < 75 degrees.

In one embodiment, the angle α between the plugging surface and the first rotation axis is 20 °.

In one embodiment, the power tool is an electric circular saw.

It also relates to an electric tool comprising:

the battery pack accommodating interface is obliquely arranged at the second end of the shell;

a motor mounted within the housing, the motor having a first axis of rotation; and

the working head is arranged at the first end of the shell and is provided with a second rotating axis, and the first rotating axis and the second rotating axis are arranged in a different surface mode.

The invention has the beneficial effects that:

the electric tool is simple and reasonable in structural design, the motor is arranged in the machine shell, the first end of the machine shell is provided with the working head, the motor is provided with the first rotating axis, the working head is provided with the second rotating axis, the first rotating axis of the motor and the second rotating axis of the working head are arranged in a different surface mode, namely the first rotating axis and the second rotating axis are arranged in a staggered mode, so that the electric tool is compact in structure, easy to operate and good in approachability, the comfort level of the electric tool during use is improved, the electric tool is convenient for a user to operate with one hand, the electric tool is easy for the user to use in a narrow space, and.

Drawings

Fig. 1 is a perspective view of a power tool according to an embodiment of the present invention;

FIG. 2 is a front view of the power tool shown in FIG. 1;

FIG. 3 is a top view of the power tool shown in FIG. 1;

FIG. 4 is a state of use diagram of the power tool of FIG. 1;

wherein:

100-a power tool;

110-a housing; 120-a working head; 130-battery pack adaptive interface; 140-a grip portion; 150-a box body; 160-a protective cover; 170-a locking mechanism; 180-a bottom plate;

200-battery pack.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following describes the electric power tool of the present invention in further detail by way of embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3, an electric tool 100 according to an embodiment of the present invention includes a housing 110, a motor, a transmission mechanism, and a working head 120. The housing 110 has a first end and a second end, the housing 110 is a hollow shell structure, the motor is installed in the housing 110, and the working head 120 is installed on the first end of the housing 110. The holding portion 140 is disposed between the first end and the second end of the housing 110, the holding portion 140 surrounds the housing 110 with reference to the first rotation axis a-a, and the holding portion 140 is convenient for a user to take and use the electric tool 100, so that the user can hold the electric tool 100 with a single hand, and the user can operate the electric tool with a single hand. Further, a rubber pad is disposed around the grip portion 140 to play a role of damping and buffering, so as to reduce the impact of the electric tool 100 on the user.

In the present invention, the power tool 100 may include a battery pack 200; of course, the power tool 100 may not include the battery pack 200, and the battery pack 200 may be obtained by outsourcing. Meanwhile, the housing 110 further has a battery pack accommodating interface 130 thereon, the battery pack accommodating interface 130 is obliquely disposed on the second end of the housing 110, and the battery pack 200 is mounted in the battery pack accommodating interface 130. For convenience of description of the battery pack 200, a battery pack accommodation interface 130 is introduced. Since the battery pack 200 is mounted in the battery pack accommodating interface 130 when the battery pack 200 is installed, the battery pack accommodating interface 130 is disposed in an inclined manner, which is equivalent to the inclined manner of the battery pack 200, and the inclined angle of the battery pack 200 is the same as the inclined angle of the battery pack accommodating interface 130. Of course, if the battery pack accommodating interface 130 does not exist on the housing 110, the battery pack accommodating interface 130 of the present invention can be appropriately replaced with the battery pack 200, and at this time, the battery pack 200 is directly and obliquely disposed on the housing 110. In the present embodiment, the battery pack 200 is mounted on the housing 110 through the battery pack placement interface 130.

The battery pack adaptive interface 130 is used for outputting electric energy in the battery pack 200 to a motor, the obliquely arranged battery pack adaptive interface 130 can improve the comfort level of a user during use, meanwhile, the obliquely arranged battery pack adaptive interface 130 can facilitate plugging and unplugging of the battery pack 200, the battery pack 200 can be detached, and the replacement efficiency of the battery pack 200 can be improved when the electric energy in the battery pack 200 is exhausted. The battery pack 200 is installed in the battery pack accommodating interface 130, the battery pack 200 provides electric power for the electric tool 100, and the electric power in the battery pack 200 is transmitted to the motor through the battery pack accommodating interface 130, so that the motor operates to output rotary power. The transmission mechanism is disposed between the motor and the working head 120, and can transmit the rotational power output by the motor to the working head 120. One end of the transmission mechanism is connected with the output end of the motor, the other end of the transmission mechanism is connected with the working head 120, the motor provides a power source for the electric tool 100, and when the electric tool 100 works, the motor rotates to drive the transmission mechanism to drive the working head 120 to rotate, so that required operation is completed.

The motor has a first axis of rotation a-a, which is the axis about which the motor rotates when in operation. The first rotation axis a-a is parallel to a line connecting the first end and the second end of the housing 110 to ensure the overall external dimensions of the power tool 100. The working head 120 has a second axis of rotation B-B, which is the axis about which the working head 120 rotates when in operation. The first rotation axis a-a and the second rotation axis B-B are arranged in a different plane, that is, the first rotation axis a-a and the second rotation axis B-B are arranged in a staggered manner, that is, they are neither intersected nor parallel, so that the working head 120 can be partially overlapped with the housing 110, the size of the electric tool 100 along the direction of the first rotation axis a-a is effectively reduced, the space occupied by the electric tool 100 is reduced, the structure of the electric tool 100 is compact, during operation, the working head 120 can be more easily close to a workpiece, the accessibility of the electric tool 100 is good, the operation with one hand is easy, the electric tool is convenient for a user to use in a narrow space, the battery pack 200 can be conveniently plugged, and the electric tool 100 can be conveniently transported.

In other embodiments, the transmission mechanism may be replaced by a tool rotation shaft that reciprocates in a rotational motion. The motor drives the tool rotation shaft to rotate, and further drives the working head 120 to rotate, so that the working head 120 works on the workpiece.

Among the present electric tool, the axis of rotation of working head is on a parallel with the axis of motor to grip electric tool through independent handle, can increase electric tool's overall dimension like this, make electric tool's structure great, the not convenient for electric tool's packing and transportation still influence the comfort level that the user used, simultaneously, the one-hand operation of not being convenient for is not convenient for use in narrow and small space, carries inconveniently, the not convenient for user uses. The motor is arranged in the machine shell 110 of the electric tool 100, the first end of the machine shell 110 is provided with the working head 120, the motor is provided with the first rotation axis A-A, the working head 120 is provided with the second rotation axis B-B, the first rotation axis A-A of the motor and the second rotation axis B-B of the working head 120 are arranged in a different surface mode, namely the first rotation axis A-A and the second rotation axis B-B are arranged in a staggered mode, therefore, the compact structure of the electric tool 100 can be guaranteed, the comfort degree of the electric tool 100 in use is improved, the single-hand operation of a user is facilitated, the use in a narrow space is facilitated for the user, and the battery pack can be conveniently plugged.

As an implementation manner, the housing 100 further includes a box 150, the box 150 is disposed at an end of the holding portion 140 close to the working head 120, and the transmission mechanism is installed in the box 150. Further, the electric tool 100 further comprises a protective cover 160, the protective cover 160 is fixedly mounted on the housing 110, and the protective cover 160 covers the outer side of the working head 120, so that the splashing phenomenon can be prevented when the working head 120 acts on a workpiece, the user injury can be avoided as much as possible, the protective cover 160 can block the splashing, and the safety of the user when the electric tool 100 is used by the user can be ensured. Of course, the protective cover 160 can also be fixedly installed on the box 150, so long as the protective cover 160 covers the outside of the working head 120 to prevent splashing, which can meet the use requirement. Still further, the electric tool 100 further comprises a locking mechanism 170, and the locking mechanism 170 is used for clamping the working head 120 to prevent the working head 120 from loosening during operation, so as to avoid affecting the use of the electric tool 100. The locking mechanism 170 is arranged on the box body 150, the locking mechanism 170 has a locking position and an unlocking position, the locking mechanism 170 is in the locking position, the rotating force of the motor can be transmitted to the working head 120 through the transmission mechanism, and the working head 120 can act on a workpiece; the locking mechanism 170 is in the unlocked position, the rotational force of the motor cannot be transmitted to the working head 120 through the transmission mechanism, and the working head 120 cannot work. Of course, the locking mechanism 170 may also be disposed on the shield 150 or the housing 110.

As an alternative embodiment, the horizontal plane in which the first axis of rotation A-A lies divides the housing 110 into a first section and a second section, the first section being located above the second section, and the working head 120 being located on the second section of the housing 110. As shown in fig. 2, the first rotation axis a-a divides the electric power tool 100 into two parts, and the direction of the first part relative to the second part in fig. 2 is referred to as up, the direction of the second part relative to the first part is referred to as down, and the center of gravity of the working head 120 is located at a position lower than the first rotation axis a-a, that is, the working head 120 is located on the second part, so that the overall center of gravity of the power tool can be moved down, the working head 120 can be more close to the workpiece, and the stability of the electric power tool 100 during use can be improved. Of course, the center of gravity of the working head 120 may also be located on the first portion.

The projection of the electric tool 100 of the present invention in the horizontal direction is shown in fig. 3, and the projection of the second rotation axis B-B in the horizontal plane is perpendicular to the projection of the first rotation axis a-a in the horizontal plane, which facilitates the transmission of the rotational power by the motor through the transmission mechanism.

As an example, a portion of the battery pack 200 is located on the first portion, and another portion of the battery pack 200 is located on the second portion. That is, a portion of the battery pack accommodating interface 130 is located on the first portion, and another portion of the battery pack accommodating interface 130 is located on the second portion, so that when the battery pack 200 is mounted on the housing 110 through the battery pack accommodating interface 130, it can be ensured that a portion of the battery pack 200 is located on the first portion, and another portion of the battery pack 200 is located on the second portion, so that the weight of the battery pack 200 is uniformly distributed on the housing 110, thereby ensuring that the center of gravity of the electric power tool 100 is stable, and facilitating the use of the user. Preferably, a small portion of the battery pack accommodating interface 130 is located on the first portion, and the rest of the larger portion of the battery pack accommodating interface 130 is located on the second portion, so that the center of gravity of the battery pack 200 is located on the second portion, further ensuring the center of gravity of the electric tool 100 to be stable, and facilitating the working head 120 to approach the workpiece.

Further, the distance from the battery pack accommodating interface 130 in the second section to the working head 120 is smaller than the distance from the battery pack accommodating interface 130 in the first section to the working head 120, i.e., the distance from the battery pack 200 in the second section to the working head 120 is smaller than the distance from the battery pack 200 in the first section to the working head 120. That is, the battery pack 200 in the second section is closer to the working head 120 than the battery pack 200 in the first section. Like this, when battery package 200 installed on battery package suitable interface 120, the installation orientation of battery package 200 was from last to down, from the right side to left for battery package 200 need not upset electric tool 100 when the installation can the direct mount to battery package suitable interface 130 on, accords with user's operating habit, and the plug of the battery package 200 of being convenient for makes things convenient for the user to change battery package 200, improves the change efficiency of battery package 200, and the user of being convenient for uses.

Further, the end of the battery pack 200 in the battery pack accommodation interface 130 is flush with the surface of the housing 110 or lower than the surface of the housing 110. That is, after the battery pack 200 is installed in the battery pack accommodating interface 130, the surface of the end of the battery pack 200 does not protrude from the surface of the housing 110, so as to ensure that the end of the battery pack 200 does not touch the arm of the user when the user uses the battery pack, and ensure that the electric power tool 100 can be normally used. Specifically, one end of the battery pack 200 away from the working head 120 in the first section may not protrude from the surface of the housing 110; both ends of the battery pack 200 may not protrude from the surface of the housing 110. In the embodiment, one end of the battery pack 200 away from the working head 120, that is, the top of the battery pack 200, may not protrude from the surface of the housing 110, so that when the electric power tool is used, the battery pack 200 may not touch the housing 110, and it is ensured that the user can normally use the electric power tool 100.

Still further, the power tool 100 includes a bottom plate 180, the bottom plate 180 is located near the working head 120, and the bottom plate 180 is movably connected to the housing 110. The shield cover 160 is fixed to the housing 110, and preferably, the base plate 180 is movably disposed on the shield cover 160 of the housing 110. Specifically, the base plate 180 is located at a position below the center of the working head protective cover 160 so as to abut against the workpiece, thereby facilitating the processing of the electric tool 100. When the working head 120 is at the lowest position as shown in fig. 4, one end of the battery pack 200 on the second section is higher than the bottom plate 180, and the bottom of the battery pack 200 on the second section is higher than the bottom plate. When the electric tool 100 operates on a workpiece, the workpiece needs to be fixed by a component similar to a clamp, so that the position of the workpiece is fixed, and then the workpiece is operated by the working head 120. When the electric tool 100 is used, if the bottom of the battery pack 200 is lower than the bottom plate 180, and the working head 120 needs to cut the workpiece on the bottom plate 300 in the manner shown in fig. 4, the battery pack 200 may interfere with the workpiece, that is, the bottom of the battery pack 200 may contact with the extension plane of the bottom plate 300, where the plane of the dotted line in fig. 4 is the extension plane of the bottom plate 300, and then the working head 120 may not approach the workpiece or may not approach the workpiece well, and further the working head 120 may not act on the workpiece or may have a poor effect, which may affect the use of the electric tool 100. Further, the raised part h of one end of the battery pack 200 is 1/50-3/4 of the diameter of the working head 120. In order to avoid the interference phenomenon of the battery pack 200 and ensure that the working head 120 can better act on the workpiece, the end of the battery pack 200 in the battery pack accommodating interface 130 on the second part is required to be higher than the bottom plate, and meanwhile, when the higher part h of the end of the battery pack 200 in the battery pack accommodating interface 130 is 1/50-3/4 of the diameter of the working head 120, the interference phenomenon of the battery pack 200 is not obvious, and the working head 120 is easier to approach the workpiece, so that the work head is convenient for a user to use.

As an embodiment, the inclined surface of the battery pack 200 in the battery pack accommodating interface 130 is an inserting surface. In this embodiment, the battery pack adaptive interface 130 is two sliding rails, the battery pack 200 is mounted on the housing 110 along the sliding rails, at this time, the inclined directions of the two sliding rails are the plugging and unplugging directions of the battery pack 200, and the planes where the two sliding rails are located are the plugging and unplugging surfaces when the battery pack 200 is plugged and unplugged. Of course, the battery pack accommodating interface 130 may also be a plug-in interface for connecting the battery pack 200 or other interfaces capable of fixing the battery pack 200 to the housing 110. When the battery pack is suitable for the inclined arrangement of the interface 130, the plugging surface intersects with the first rotation axis A-A, at the moment, an included angle alpha exists between the plugging surface and the first rotation axis A-A, and the range of the included angle alpha is alpha less than 90 degrees. For convenience of describing the included angle α, taking the front view of the electric power tool 100 shown in fig. 2 as an example, the projection of the plugging surface on the front view is an inclined line C-C, and the included angle between the inclined line C-C and the first rotation axis a-a is α. Meanwhile, the plugging surface and the rotation axis B-B are arranged in a non-planar mode. Preferably, the included angle between the plugging surface and the first rotation axis a-a is 10 ° < α < 75 °, which can ensure that the height of the surface of the battery pack 200 and the surface of the housing 110 are not too different, so that the user can not touch the protruding battery pack 200 when using the battery pack, thereby facilitating the user to use the battery pack. Preferably, the included angle α between the plugging surface and the first rotation axis a-a is 20 °, which is most labor-saving when a user plugs and unplugs the battery pack 200, and can improve the replacement efficiency of the battery pack 200 when the electric tool 100 is used, thereby facilitating the use of the user. Meanwhile, the angle α between the plugging surface and the first rotation axis a-a is 20 °, and after the battery pack 200 is mounted at the position where the battery pack accommodating interface 130 is located, as can be seen from fig. 2, the top and the bottom of the battery pack 200 are substantially flush with the upper and lower surfaces of the housing 110, and do not protrude a portion, the upper end of the battery pack 200 does not touch the arm of the user, and the lower end of the battery pack 200 does not contact the extension surface of the bottom plate 300, which is convenient for the operator to use.

As an embodiment, the working head 120 is a cutting tool or a grinding tool. Specifically, when the working head 120 is a cutting tool, the electric tool 100 is an electric saw or the like; when the working head 120 is a grinding tool, the electric tool 100 is an electric grinding wheel or the like. Of course, the power tool 100 may also be a hand-held power tool 100 such as a power sander, a power drill, or the like. Further, the cutting tool is a saw blade; the grinding tool is a grinding wheel. The saw blade can be a high-speed steel saw blade, a diamond saw blade and other saw blades with higher strength. The grinding wheel can be a grinding plate, a grinding wheel or a polishing plate and the like. Preferably, the electric tool 100 is an electric circular saw, and after the electric circular saw adopts the above structure, the whole size of the electric circular saw is reduced, so that the working head 120 is convenient to approach the workpiece, and meanwhile, the holding part 140 on the casing 110 is convenient for the user to operate with one hand, so that the electric circular saw is convenient to use.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electric power tool, characterized by comprising:

a housing having a first end and a second end;

a motor mounted within the housing, the motor having a first axis of rotation;

the battery pack is obliquely arranged at the second end of the shell, an inclined surface of the battery pack during plugging and pulling movement on the shell is a plugging surface, and the battery pack is arranged at the second end of the shell in a sliding manner;

when the first rotating axis is in a horizontal state, the horizontal plane where the first rotating axis is located divides the machine shell into a first part and a second part, the first part is located above the second part, the working head is located on the second part, and the upper end of the battery pack is flush with the surface of the first part or lower than the surface of the first part.

2. The power tool of claim 1, wherein a portion of the battery pack is located on the second portion of the housing and another portion of the battery pack is located on the first portion.

3. The power tool of claim 2, wherein the distance from the battery pack on the second section to the working head is less than the distance from the battery pack on the first section to the working head.

4. The power tool of claim 3, further comprising a base plate, wherein the base plate is movably connected to the housing, the working head is at a lowest position, and an end of the battery pack on the second portion is higher than the base plate.

5. The power tool as claimed in claim 4, wherein the raised portion of one end of the battery pack is 1/50-3/4 of the diameter of the working head.

6. The power tool of claim 1, wherein the insertion surface intersects the first axis of rotation at an angle α that ranges from α < 90 °.

7. The power tool of claim 6, wherein the angle between the insertion and extraction surface and the first axis of rotation is 10 ° < α < 75 °.

8. The power tool of claim 7, wherein the angle α between the insertion and extraction surface and the first axis of rotation is 20 °.

9. The power tool of any one of claims 1 to 8, wherein the power tool is an electric circular saw.

10. An electric power tool, characterized by comprising:

the battery pack accommodating interface is obliquely arranged at the second end of the shell, an inclined surface of the battery pack during plugging and pulling movement on the shell is a plugging and pulling surface, and the battery pack is arranged at the second end of the shell in a sliding manner;

the working head is arranged at the first end of the shell and is provided with a second rotating axis, and the first rotating axis and the second rotating axis are arranged in a different surface mode;