CN113245621A

CN113245621A - Reciprocating saw

Info

Publication number: CN113245621A
Application number: CN202010086402.3A
Authority: CN
Inventors: 吹拔正敏; 周洋; 高�浩
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Deshuo Industrial Co Ltd
Priority date: 2020-02-11
Filing date: 2020-02-11
Publication date: 2021-08-13
Anticipated expiration: 2040-02-11
Also published as: CN113245621B

Abstract

The invention discloses a reciprocating saw, comprising: a housing fixedly connected or formed with a first region, a connection region and a second region; the cutting accessory and the motor comprise a first end and a second end; the power assembly, the switch assembly, the transmission assembly and the output assembly; wherein, transmission assembly includes: the second transmission piece can be driven by the first transmission piece to rotate around a first rotation line, and the first rotation line basically extends in the up-and-down direction; in the front-back direction, the connection area is arranged between the first area and the second area, the motor is at least partially positioned in the connection area, the switch assembly is positioned in the second area, and the cutting accessory is arranged adjacent to the first area; the direction of a first axis of the motor is crossed with the direction of the front-back direction, and the front-back direction is basically vertical to the up-down direction; in the up-down direction, the second end of the motor is located on the upper side of the first end of the motor. The reciprocating saw provided by the invention has a reasonable structure and can be conveniently held by a user.

Description

Reciprocating saw

Technical Field

The invention relates to a cutting tool, in particular to a reciprocating saw.

Background

The reciprocating saw is an electric tool for sawing metal plates, pipes and sections or cutting oblique openings on steel pipes or cables or other non-metal materials, and generally comprises a shell, a motor, a transmission mechanism, a saw blade and the like, wherein the torque of the motor is converted into the linear reciprocating motion of the saw blade through the transmission mechanism, so that the cutting is realized.

At present, a plurality of occasions need to use the reciprocating saw, the reciprocating saw is a high-power cutting tool, a user can use both hands to operate and use the reciprocating saw, but the reciprocating saw can generate great vibration in the operation process, and therefore the problem that the user can not stably hold the reciprocating saw when holding the reciprocating saw to operate can occur.

Accordingly, it is desirable to provide a reciprocating saw that is compact and small in size.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the reciprocating saw which is optimized in structural arrangement and can reduce the size of the whole machine.

In order to achieve the above object, the present invention adopts the following technical solutions: a reciprocating saw, comprising: a housing having a first region, a connection region, and a second region; a motor rotatable about a first axis; the power assembly is used for providing an energy source for the motor; the switch assembly is at least partially arranged in the shell and is used for allowing or forbidding the power assembly to provide energy for the motor; a transmission assembly connected to the motor; an output assembly for mounting a cutting accessory, the output assembly being connected to the drive assembly; wherein, transmission assembly includes: the first transmission piece is fixedly connected with the motor or integrally formed; the second transmission piece is connected with the first transmission piece and can be driven by the first transmission piece to rotate around a first rotation line, and the first rotation line basically extends in the vertical direction; in the front-back direction, the connecting area is arranged between the first area and the second area, the motor is at least partially positioned in the connecting area, the switch assembly is positioned in the second area, and the first area is arranged on the front side of the connecting area; the direction of a first axis of the motor is crossed with the direction of the front-back direction, and the front-back direction is basically vertical to the up-down direction; the first transmission piece is provided with a first end, the motor is provided with a second end, the second end of the motor is positioned on the upper side of the first end of the first transmission piece in the up-down direction, the first end of the first transmission piece is close to the first area in the front-back direction, and the second end of the motor is close to the second area.

Optionally, the first transmission member extends substantially in a direction parallel to the first axis; the motor and the first transmission piece have a first length D1 in a first direction parallel to the first axis; the motor and the first transmission piece have a second length D2 in a second direction parallel to the front-back direction; wherein the ratio of the first length D1 to the second length D2 is in the range of 1.003-1.015.

Optionally, the first transmission member extends substantially in a direction parallel to the first axis; the motor and the first transmission piece have a first length D1 in a first direction parallel to the first axis; the motor and the first transmission piece have a second length D2 in a second direction parallel to the front-back direction; wherein the ratio of the first length D1 to the second length D2 is 1.003-1.1.

Optionally, the reciprocating saw further comprises a support assembly movably connected with the housing; the support assembly includes: the supporting bracket is at least partially arranged in the shell; the supporting seat is movably connected with the supporting bracket and is used for adjusting the length of the cutting accessory in the front-back direction, and the supporting seat is provided with a lower surface which at least partially extends in a third plane; the attachment zone having a first surface at least partially extending in a second plane; when the third plane is parallel to the second plane, the distance between the third plane and the second plane is greater than or equal to 5mm and less than or equal to 25 mm.

Optionally, the first region has a second surface, the second surface extending at least partially within the first plane; the attachment zone having a first surface at least partially extending in a second plane; when the first plane is parallel to the second plane, the distance between the first plane and the second plane is greater than or equal to 5mm and less than or equal to 35 mm.

Optionally, the attachment zone has a first surface that is at least partially extensive in a second plane; in the up-down direction, the angle formed between the first axis and the second plane is greater than or equal to 5 ° and less than or equal to 20 °.

Optionally, the second region extends at least partially in a first linear direction, the first linear direction intersecting the direction of the first axis, and an angle formed between the first linear direction and the direction of the first axis is 70 ° or more and 105 ° or less.

Optionally, the motor comprises a motor shaft, and the motor shaft is fixedly connected with the first transmission piece or integrally formed; the first transmission piece is provided with a first end surface; the second transmission piece is provided with a second end face; the first end surface of the first transmission piece is meshed with the second end surface of the second transmission piece.

Optionally, the second transmission piece further has a third end face, which is disposed opposite to the second end face; the transmission assembly further includes: an eccentric mass connected to the second rotating member; the output assembly comprises a slide rod connected to the eccentric block, the slide rod extending substantially in a front-to-rear direction; in the up-down direction, the eccentric block is positioned above the third end surface, and the sliding rod is positioned above the eccentric block; the second end surface is positioned below the third end surface.

Optionally, the first transmission member is a bevel gear; the second transmission piece is a bevel gear.

The invention has the advantages that: the invention provides the reciprocating saw which is optimized in structural arrangement, can reduce the size of the whole machine and is convenient for a user to hold.

Drawings

FIG. 1 is a perspective view of a reciprocating saw according to the present application;

FIG. 2 is a perspective view of the reciprocating saw of FIG. 1 from another perspective;

FIG. 3 is a plan view of the reciprocating saw of FIG. 1;

FIG. 4 is a plan view of a portion of the reciprocating saw shown in FIG. 1;

FIG. 5 is a plan view of a portion of the reciprocating saw shown in FIG. 1;

FIG. 6 is a schematic view of a user holding a first section of the reciprocating saw of FIG. 1;

FIG. 7 is a schematic view of a user holding the attachment area of the reciprocating saw of FIG. 1;

FIG. 8 is a schematic view of a user holding the first zone and the connecting zone of the reciprocating saw of FIG. 1;

FIG. 9 is a perspective view of a portion of the reciprocating saw of FIG. 1;

FIG. 10 is an enlarged fragmentary view of the reciprocating saw of FIG. 9;

FIG. 11 is a perspective view of the reciprocating saw of FIG. 9 from another perspective;

FIG. 12 is an enlarged fragmentary view of the reciprocating saw of FIG. 11;

FIG. 13 is a schematic view of the operation of the reciprocating saw of FIG. 1.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Referring to fig. 1 to 9, the reciprocating saw 100 includes: a housing 10 including a first region 11, a connecting region 12 and a second region 13; a motor 30 rotatable about a first axis 101; a transmission assembly 60 connected to the motor 30 and capable of being driven by the motor 30; an output assembly 70 connected to the transmission assembly 60, the output assembly 70 being at least partially disposed within the housing 10, the output assembly 70 being configured to mount a cutting accessory 20, the cutting accessory 20 being configured to perform a cutting function of the reciprocating saw 100, the cutting accessory 20 being configured to be a saw blade; the power assembly 40 is used for providing an energy source for the motor 30, and the power assembly 40 may be a battery pack 41. as an embodiment, the battery pack 41 is mounted to the reciprocating saw 100, that is, the battery pack 40 has an output port, the reciprocating saw 100 has an input port, and the battery pack 41 is connected with the input port through the output port to realize power transmission. As another embodiment, the battery pack 41 and the reciprocating saw 100 may be separately provided, that is, a power line is connected between the battery pack 41 and the reciprocating saw 100 to realize power transmission; and a switch assembly 50 disposed at least partially within the housing 10, the switch assembly 50 being configured to allow or prohibit the battery pack 41 from providing power to the motor 30. Wherein, the motor 30 and the transmission assembly 60 are both arranged in the casing 10, and the motor 30 can drive the cutting accessory 20 to move. As a possible embodiment, the motor 30 may be an external rotor motor 30 or an internal rotor motor 30. Wherein the motor 30 is located at least partially within the connection region 12, the switch assembly 50 is located within the second region 13, and the cutting accessory 20 is located adjacent the first region 11.

The transmission assembly 60 comprises a first transmission piece 61 and a second transmission piece 62, wherein the first transmission piece 61 is fixedly connected with the motor 30 or integrally formed, namely, the first transmission piece 61 can rotate along with the rotation of the motor 30; the second transmission member 62 is connected to the first transmission member 61, and the second transmission member 62 can be rotated by the first transmission member 61 around the first rotation line 102. Wherein the first rotation line 102 extends substantially in the up-down direction. In the front-rear direction, the connection region 12 is disposed between the first region 11 and the second region 13, the first region 11 is disposed on the front side of the connection region 12, and the direction of the first axis 101 intersects with the front-rear direction. The front-rear direction is substantially perpendicular to the up-down direction. In the present embodiment, the first transmission member 61 has a first end 31, the motor 30 has a second end 32, the second end 32 of the motor 30 is located above the first end 31 of the first transmission member 61 in the up-down direction, the first end 31 of the first transmission member 61 is close to the first area 11 in the front-back direction, and the second end 32 of the motor 30 is close to the second area 13. In the above arrangement, it can be understood that, in the up-down direction, the second end 32 of the motor 30 is disposed close to the output assembly 70, that is, the distance from the second end 32 of the motor 30 to the output assembly 70 is reduced, the distance from the connecting region 12 in the up-down direction is reduced, so that the reciprocating saw 100 is compact and the cost is reduced, and at the same time, the user can conveniently hold the reciprocating saw 100 while operating the reciprocating saw 100 for work due to the reduced distance from the connecting region 12 in the up-down direction. The motor 30 can transmit the torque to the output assembly 70 through the transmission assembly 60, so that under the condition that the reciprocating saw 100 can normally run, the motor 30 can be installed at any position in the machine shell 10, the position requirement of the center of gravity of the reciprocating saw 100 can be met, and other structures in the reciprocating saw can be arranged, the motor 30 is installed at a more reasonable position in the machine shell 10, and the reciprocating saw 100 can be more compactly arranged.

In particular, when the high power reciprocating saw 100 is operated by a user, the user often needs to hold the machine with both hands, and the reciprocating saw 100 needs to operate the switch assembly 50 to be activated, so we can understand that, in order to operate the reciprocating saw 100, when operating the reciprocating saw 100, the user will tend to hold and operate the switch assembly 50 in the second region 13 with one hand and the first region 11 near the cutting accessory 20 with the other hand, so as to hold the reciprocating saw 100 and control the cutting direction, but in some working conditions, for example: the user needs to cut the workpiece in a narrow space through which only the first section 11 of the reciprocating saw 100 can pass, and the user needs to hold the connecting section 12 of the reciprocating saw 100 to perform the cutting operation. Alternatively, some users may be accustomed to holding the attachment region 12 to stabilize the reciprocating saw 100, thereby achieving control of the cutting direction of the reciprocating saw 100. With the above arrangement, the distance between the connecting section 12 and the upper and lower directions is reduced, when the user uses the reciprocating saw 100, the user can hold the switch assembly 50 of the second section 11 with one hand and hold any one of the three sections, namely the first section 11, the connecting section 12 and the second section 13 with the other hand, so as to stabilize the body and facilitate the operation of the cutting direction of the reciprocating saw 100, and it should be noted that the user can also hold the first section 11 and the connecting section 12 at the same time, that is, the user can hold the connecting section 12 and the second section 13 at the same time. I.e., the user can conveniently control the cutting direction of the reciprocating saw 100 by holding the attachment area 12.

Referring to fig. 1 to 9, as an alternative embodiment, the first transmission member 61 extends substantially in a direction parallel to the first axis 101, the motor 30 and the first transmission member 61 have a first length D1 in a first direction a parallel to the first axis 101, and the motor 30 and the first transmission member 61 have a second length D2 in a second direction B parallel to the front-back direction, wherein a ratio of the first length D1 to the second length D2 is in a range of 1.003 to 1.015. In the present application, the first length D1 refers to the longest distance from the first end 31 of the first transmission member 61 to the second end 32 of the motor 30 along the first direction a, and the second length D2 refers to the longest distance from the first end 31 of the first transmission member 61 to the second end 32 of the motor 30 along the second direction B.

In some cases, the work to be cut is adjacent to the table (see fig. 13), so that the user cannot hold the first area 11 for work, and tends to hold the area near the connecting area 12 or the connecting area 12 for work, and therefore, for the convenience of holding, it is inevitable to consider reducing the size of the reciprocating saw 100 in the up-down direction. With the above arrangement, the distance of the connecting section 12 in the up-down direction can be reduced, and the user can easily hold the saw 100, thereby better operating the saw. Furthermore, the ratio of the first length D1 to the second length D2 is in the range of 1.003 to 1.1, and the above effect is better.

Referring to fig. 4 to 7, the reciprocating saw 100 further includes a supporting member 80, wherein the supporting member 80 is movably connected to the housing 10; the supporting assembly 80 comprises a supporting bracket 81 and a supporting seat 82, the supporting bracket 81 is at least partially disposed in the casing 10, the supporting bracket 81 is movably connected to the casing 10, that is, the supporting bracket 81 can move back and forth along a third linear direction 106, wherein the third linear direction 106 is substantially parallel to the front-back direction; the supporting seat 82 can be matched with the cutting accessory 20, the supporting seat 82 is used for adjusting the length of the cutting accessory 20 in the front-back direction, so that different working conditions are met, the supporting seat 82 is movably connected with the supporting bracket 81, namely the supporting seat 82 can rotate around the second axis 107, the supporting seat 82 is provided with a lower surface 821, and at least part of the lower surface 821 extends in the third plane P3, wherein when the third plane P3 is basically parallel to the second plane P2, the distance L2 between the third plane P3 and the second plane P2 is larger than or equal to 5mm and smaller than or equal to 25mm, and the arrangement is convenient for a user to hold the connecting region 12 with one hand, is convenient for the user to operate the reciprocating saw 100, and improves the experience of the user. Furthermore, the distance L2 from the third plane P3 to the second plane P2 is greater than or equal to 7mm and less than or equal to 17mm, so that the setting effect is better.

It should be noted that, as an alternative embodiment, the saw blade 22 can rotate in a direction generally parallel to the front-to-rear direction and the support assembly 80 can rotate in a direction generally parallel to the front-to-rear direction. As another alternative, the first region 11 is movably connected to the connection region 12, i.e., the first region 11 is capable of rotating about a direction substantially parallel to the front-to-rear direction.

Referring to fig. 7 to 8, the first region 11 has a second surface 111, wherein the second surface 111 at least partially extends in a first plane P1, and a distance L3 from the first plane P1 to the second plane P2 is greater than or equal to 5mm and less than or equal to 35mm in the up-down direction. In order to facilitate the control of the reciprocating saw 100, a user may hold the first region 11 disposed adjacent to the saw blade 22, and when the user holds the first region 11, the user may often touch the first surface 121 of the connecting region 12, which is to be understood as the above arrangement, such that when the user holds the first region 11 with one hand, the first surface 121 may abut against the palm of the user, which may prevent the palm of the user from slipping off, and at the same time, the user may not hold the connecting region 12 or the connecting portion of the first region 11 and the connecting region 12 for operation due to the long distance between the second plane P2 of the first surface 121 and the first plane P1 of the second surface 111. The experience of the user is improved, and meanwhile, the structure of the whole machine is compact. Preferably, the distance L3 from the first plane P1 to the second plane P2 is 10mm or more and 25mm or less.

The connecting region 12 has a third surface 122, the third surface 122 being at least partially within a fifth plane P5, the fifth plane P5 being located above the second plane P2. The motor 30 comprises a front end face 33 and a rear end face 34, the front end face 33 is arranged on one side close to the transmission assembly 60, the rear end face 34 is arranged on one side far away from the transmission assembly 60, specifically, the front end face 33 is arranged on the same side with the first end 31 of the motor 30, and the rear end face 34 is arranged on the same side with the second end 32 of the motor 30.

Referring to fig. 10, the reciprocating saw 100 further includes a fan 90, the fan 90 is connected to the motor 30, in the embodiment, the fan 90 includes a first surface and a second surface, the first surface of the fan 90 is disposed adjacent to the rear end surface 34 of the motor 30, and the second surface of the fan 90 is disposed away from the rear end surface 34 of the motor 30. The fan 90 is rotatable coaxially with the motor 30, i.e. the fan 90 is rotatable around a first axis 101, wherein the first axis 101 intersects a second plane P2, the first axis 101 and the second plane P2 form an angle α, wherein α is in the range of 5 ° or more and 20 ° or less. That is, the second surface of the fan 90 is close to the third surface 122, so as to reduce the distance from the fan 90 to the fifth plane P5, and make the whole structure more compact. Preferably, the first axis 101 is at an angle β to the second plane P2, wherein β is in the range of 5 ° or more and 15 ° or less.

With reference to fig. 9, the second region 13 at least partially extends along the first line 103, the direction of the first line 103 intersects with the direction of the first axis 101, wherein an angle α formed by the direction of the first line 103 and the direction of the first axis 101 is greater than or equal to 70 ° and smaller than or equal to 105 °.

Referring to fig. 10 and 11, the motor 30 includes a motor shaft 35, the motor shaft 35 is fixedly connected or integrally formed with the first transmission member 61, and the motor shaft 35 and the first transmission member 61 may be directly or indirectly fixedly connected, that is, the motor shaft 35 and the first transmission member 61 may be directly fixed by using a threaded connection, an interference fit, or the first transmission member 61 may be fixedly mounted on an intermediate member, and the intermediate member is fixedly mounted on the motor shaft 35. As another embodiment, the first transmission member 61 is integrally formed with the motor shaft 35, i.e., the first transmission member 61 is a part of the motor shaft 35. In the present embodiment, the specific connection manner between the motor shaft 35 and the first transmission piece 61 is not limited as long as the motor shaft 35 and the first transmission piece 61 can be relatively fixed and can rotate synchronously. The first transmission member 61 has a first end surface 611, and the second transmission member 62 has a second end surface 621, wherein the first end surface 611 of the first transmission member 61 is engaged with the second end surface 621 of the second transmission member 62.

It should be noted that the fixed connection in this application can be interpreted as a direct fixed connection or an indirect fixed connection in the above description.

The second transmission member 62 further includes a third end surface 622 opposite to the second end surface 621. The reciprocating saw 100 further includes an eccentric block 63 disposed in the housing 10, the eccentric block 63 being connected to the second transmission member 62. The output assembly 70 includes a sliding rod 71 connected to the eccentric block 63, the saw blade 22 is mounted to the front end of the sliding rod 71, the eccentric block 63 is disposed away from one side of the saw blade 22, the sliding rod 71 extends along a second straight line 105, specifically, the direction of the second straight line 105 is substantially parallel to the front-back direction, wherein in the up-down direction, the eccentric block 63 is located above the third end surface 622, the sliding rod 71 is located above the eccentric block 63, the second end surface 621 is located below the third end surface 622, in the front-back direction, the first axis 101 of the motor 30 intersects the direction of the second straight line 105 of the sliding rod 71, the distance from the rear end of the sliding rod 71 to the front end surface 33 of the motor 30 is reduced, the motor 30 is made to be close to the sliding rod 71, so that the structure of the whole machine is more compact, the distance between the connecting region. In the present embodiment, the first transmission member 61 is a bevel gear, and the second transmission member 62 is a bevel gear. The reciprocating saw 100 is simple in structure, convenient to use, capable of saving cost and convenient to manufacture.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A reciprocating saw, comprising:

a housing having a first region, a connection region, and a second region;

a motor rotatable about a first axis;

a power assembly for providing a source of energy to the motor;

a switch assembly disposed at least partially within the housing, the switch assembly configured to allow or prohibit the power assembly from providing energy to the motor;

a transmission assembly connected to the motor;

an output assembly for mounting a cutting accessory, the output assembly connected to the drive assembly;

wherein, the transmission assembly includes:

the first transmission piece is fixedly connected with the motor or integrally formed;

the second transmission piece is connected with the first transmission piece and can be driven by the first transmission piece to rotate around a first rotation line, and the first rotation line basically extends in the up-and-down direction;

in the front-rear direction, the connection area is arranged between the first area and the second area, the motor is at least partially positioned in the connection area, the switch assembly is positioned in the second area, and the first area is arranged on the front side of the connection area;

a direction of the first axis of the motor intersects a direction of the front-rear direction, the front-rear direction being substantially perpendicular to the up-down direction;

the first transmission member has a first end, the motor has a second end, the second end of the motor is located on the upper side of the first end of the first transmission member in the up-down direction, the first end of the first transmission member is close to the first area in the front-back direction, and the second end of the motor is close to the second area.

2. The reciprocating saw as defined in claim 1, wherein:

the first transmission piece extends substantially in a direction parallel to the first axis;

the motor and the first transmission piece have a first length D1 in a first direction parallel to the first axis;

the motor and the first transmission piece have a second length D2 in a second direction parallel to the front-back direction;

wherein the ratio of the first length D1 to the second length D2 is in the range of 1.003-1.015.

3. The reciprocating saw as defined in claim 1, wherein:

wherein the ratio of the first length D1 to the second length D2 is 1.003-1.1.

4. The reciprocating saw as defined in claim 1, wherein:

the reciprocating saw also comprises a supporting component movably connected with the machine shell;

the support assembly includes:

a support bracket at least partially disposed within the housing;

the supporting seat is movably connected with the supporting bracket and is provided with a lower surface, and at least part of the lower surface extends in a third plane;

the attachment zone having a first surface that is at least partially extensive in a second plane;

when the third plane is parallel to the second plane, the distance between the third plane and the second plane is greater than or equal to 5mm and less than or equal to 25 mm.

5. The reciprocating saw as defined in claim 1, wherein:

the first region having a second surface at least partially extending in a first plane;

when the first plane is parallel to the second plane, the distance between the first plane and the second plane is greater than or equal to 5mm and less than or equal to 35 mm.

6. The reciprocating saw as defined in claim 1, wherein:

in the up-down direction, an angle formed between the first axis and the second plane is greater than or equal to 5 ° and less than or equal to 20 °.

7. The reciprocating saw as defined in claim 1, wherein:

the second region extends at least partially in a first linear direction intersecting with the direction of the first axis, and an angle formed between the first linear direction and the direction of the first axis is 70 ° or more and 105 ° or less.

8. The reciprocating saw as defined in claim 1, wherein:

the motor comprises a motor shaft, and the motor shaft is fixedly connected with the first transmission piece or integrally formed;

the first transmission piece is provided with a first end surface;

the second transmission piece is provided with a second end face;

the first end surface of the first transmission piece is meshed with the second end surface of the second transmission piece.

9. The reciprocating saw as defined in claim 8, wherein:

the second transmission piece is also provided with a third end face which is arranged opposite to the second end face;

the transmission assembly further includes:

an eccentric mass connected to the second rotating member;

the output assembly includes a slide bar connected to the eccentric mass, the slide bar extending substantially in a front-to-rear direction;

in the vertical direction, the eccentric block is positioned above the third end surface, and the slide rod is positioned above the eccentric block;

the second end surface is located below the third end surface.

10. The reciprocating saw as defined in claim 9, wherein:

the first transmission piece is a bevel gear;

the second transmission piece is a bevel gear.