Reciprocating saw

Abstract

The utility model discloses an electric tool, and particularly relates to a reciprocating saw. The reciprocating saw comprises a shell, a motor, a transmission assembly, an output piece, a control switch, a balance switch and a holding part, and the control switch is used for controlling the working state of the reciprocating saw; the balance plate moves along the balance axis and is used for balancing the movement of the output piece; the holding part is formed on the shell and extends along a holding axis; the reciprocating saw is powered by the battery pack, and the battery pack is arranged in the holding part. The battery pack is installed in the holding part in a hidden mode, the appearance is more attractive, and operation cannot be affected by protruding of the battery pack; and the gravity center of the whole machine is optimized and is closer to the control switch, so that the whole machine is more comfortable in holding hand feeling, the operation is not easy to fatigue, and the man-machine control performance is better. In addition, by arranging a balance plate, vibration of the reciprocating saw can be reduced, and the reciprocating saw can work in a stable state.

Description

Technical Field

[0001] The present application relates to an electric tool, in particular to a reciprocating saw. Background Art

[0002] As a cutting tool, a reciprocating saw cuts a workpiece by reciprocating a saw blade connected to an output component.

[0003] A reciprocating saw in the related art includes a housing, a motor, a transmission assembly and an output component, wherein the motor, the transmission assembly and the output component are all installed in the housing, and the torque of the motor is converted into a linear reciprocating motion of the output component through the transmission assembly. When the reciprocating saw outputs reciprocating motion, it generally has a large vibration. In order to improve the cutting feel, low-vibration single-handed reciprocating saws are gradually becoming a market trend.

[0004] This section provides background information related to the present application which is not necessarily prior art. Utility Model Content

[0005] An object of the present application is to solve or at least alleviate a part or all of the above problems. To this end, an object of the present application is to provide a reciprocating saw.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A reciprocating saw comprising:

[0008] A housing is formed with a receiving space;

[0009] A motor is arranged in the accommodation space, and the motor includes a motor shaft rotating around a motor axis;

[0010] A transmission assembly, disposed in the accommodation space and connected to the motor shaft;

[0011] an output member connected to the transmission assembly, wherein the transmission assembly is capable of converting the rotation of the motor shaft into a reciprocating motion of the output member along an output member line;

[0012] A control switch for controlling the working state of the reciprocating saw;

[0013] A balance plate moves along a balance axis, and the balance plate is used to balance the movement of the output member;

[0014] A gripping portion is formed on the housing, the gripping portion extends along a gripping axis, the balance axis intersects with the gripping axis at a first intersection, and the first intersection is located inside the gripping portion;

[0015] The reciprocating saw is powered by a battery pack, which is at least partially disposed within the grip.

[0016] In some embodiments, a battery pack combining portion is further included, wherein the battery pack combining portion is disposed in the holding portion, the battery pack combining portion is used to install the battery pack, and the battery pack is detachably connected to the battery pack combining portion.

[0017] In some embodiments, a control board is further included, wherein the control board is obliquely disposed between the control switch and the motor, and an angle between the control board and the motor axis is greater than or equal to 0 degrees and less than or equal to 60 degrees.

[0018] In some embodiments, the holding axis is not perpendicular to and parallel to the motor axis and the balance axis, and the motor axis is substantially perpendicular to the balance axis.

[0019] In some embodiments, an angle between the balance axis and the grip axis is greater than or equal to 140 degrees and less than or equal to 170 degrees.

[0020] In some embodiments, the overall length of the reciprocating saw is less than or equal to 400 mm.

[0021] In some embodiments, the control switch has a switch center, and a straight-line distance from the switch center to the center of gravity of the reciprocating saw is less than or equal to 60 mm.

[0022] In some embodiments, the control switch has a switch center. In the front-to-back direction, the distance from the switch center to the center of gravity of the reciprocating saw is L1, and the distance from the switch center to the front end of the shell is L2. The ratio of L1 to L2 is less than or equal to 1:2.

[0023] In some embodiments, a support member and a gear box are further included, wherein the support member is used to support the balance board, the gear box includes an upper box body and a lower box body that are connected in abutment, and the support member is fixed to the upper box body along the left-right direction.

[0024] In some embodiments, the gearbox is an unenclosed open structure.

[0025] In some embodiments, an angle between the balance axis and the grip axis is greater than or equal to 120 degrees and less than or equal to 170 degrees.

[0026] A reciprocating saw comprising:

[0027] A housing is formed with a receiving space;

[0028] A motor is arranged in the accommodation space, and the motor includes a motor shaft rotating around a motor axis;

[0029] A transmission assembly, disposed in the accommodation space and connected to the motor shaft;

[0030] an output member connected to the transmission assembly, wherein the transmission assembly is capable of converting the rotation of the motor shaft into a reciprocating motion of the output member along an output member line;

[0031] A control switch for controlling the working state of the reciprocating saw;

[0032] A balance plate moves along a balance axis and is used to balance the movement of the output member;

[0033] A grip portion formed on the housing, the grip portion extending along a grip axis;

[0034] A battery pack combination portion, the battery pack combination portion is disposed in the grip portion, the battery pack combination portion is used to install a battery pack, and the battery pack is used to power the reciprocating saw;

[0035] The included angle between the holding axis and the motor axis is greater than or equal to 50 degrees and less than or equal to 140 degrees.

[0036] The benefits of this application are:

[0037] The present invention hides the battery pack in the grip, which is more beautiful than the installation method of installing the battery pack outside the shell, and does not affect the operation due to the protrusion of the battery pack; and optimizes the center of gravity of the whole machine, which is closer to the control switch, making the whole machine more comfortable to hold, less fatigue-prone to operation, and better human-machine control performance. In addition, the present invention is also provided with a balance board, which can reduce the vibration of the reciprocating saw and make the reciprocating saw work in a more stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a front view of a reciprocating saw provided in an embodiment of the present application;

[0039] Figure 2 is a three-dimensional diagram of a reciprocating saw provided by an embodiment of the present application with a portion of the housing removed;

[0040] Figure 3 is a cross-sectional view of a reciprocating saw provided in an embodiment of the present application;

[0041] Figure 4 is a schematic diagram of the exploded structure of the gear box, transmission assembly and balance plate involved in the embodiments of the present application;

[0042] Figure 5 is a three-dimensional diagram of the gear box, transmission assembly and balance board involved in the embodiment of the present application;

[0043] Figure 6 It is a front view of the gear box, transmission assembly and balance board involved in the embodiment of the present application;

[0044] Figure 7 is a cross-sectional view of the gear box, transmission assembly and balance plate involved in the embodiment of the present application;

[0045] Figure 8 The dimensions of the reciprocating saw involved in the embodiments of the present application are shown in FIG. Figure 1 ;

[0046] Fig. 9 The dimensions of the reciprocating saw involved in the embodiments of the present application are shown in FIG. Figure 2 .

[0047] In the figure:

[0048] 100, reciprocating saw; 101, grip axis; 102, motor axis; 103, balance axis; 104, center of gravity of the whole machine;

[0049] 10. Shell; 11. Grip; 12. First accommodating space; 13. Second accommodating space; 20. Motor; 21. Motor shaft; 30. Gear box; 31. Upper box body; 311. Support shaft; 312. Left side wall; 313. Right side wall; 32. Lower box body; 40. Transmission assembly; 41. First transmission wheel; 42. Second transmission wheel; 421. Eccentric block; 4211. Connecting part; 4212. Notch; 422. Transmission pin; 51. Balance plate; 511. Long slot hole; 52. Support member; 53. First positioning column; 54. Second positioning column; 55. First gasket; 56. Second gasket; 61. Output member; 611. Transmission hole; 62. Support seat; 70. Battery pack; 80. Control switch; 801. Switch center; 90. Control board. DETAILED DESCRIPTION

[0050] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0051] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0052] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0053] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0054] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0055] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0056] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0057] In this application, the terms "controller", "processor", "central processing unit", "CPU", and "MCU" are interchangeable. When a unit "controller", "processor", "central processing unit", "CPU", or "MCU" is used to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.

[0058] In the present application, the terms “device”, “module” or “unit” may be implemented in the form of hardware or software to achieve specific functions.

[0059] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0060] like Figures 1 to 9 As shown, the present application provides a reciprocating saw 100, including a housing 10, a motor 20, a transmission assembly 40, an output member 61 and a power supply device, wherein the housing 10 is formed with a receiving space for receiving the motor 20 and the transmission assembly 40, etc. The motor 20 is used to provide power to the reciprocating saw 100, and the motor 20 includes a motor shaft 21 that can rotate around a motor axis 102. The transmission assembly 40 is disposed in a gear box 30, and the transmission assembly 40 is used to transmit the power of the motor 20 to the output member 61, thereby driving the output member 61 to reciprocate to cut a workpiece. It can be understood that in this embodiment, a working accessory (not shown in the figure) connected to the output member 61 is also included, and the reciprocating saw 100 can be connected to different working accessories to cut different workpieces.

[0061] Reference Figure 2 and Figure 3The housing 10 extends in the front-to-back direction to form a first accommodation space 12 and a second accommodation space 13. The first accommodation space 12 is used to install power components such as the motor 20 and the transmission assembly 40, and the second accommodation space 13 is used to install components such as operating parts, electronic components, and electric control panels. The entire reciprocating saw 100 is basically arranged in the front-to-back direction. It can be understood that the first accommodation space 12 is larger than the second accommodation space 13, and the first accommodation space 12 and the second accommodation space 13 are connected or partially closed.

[0062] The housing 10 is formed with a gripping portion 11 for a user to grip. Specifically, the housing 10 that forms the second accommodation space 13 is formed with the gripping portion 11 for a user to grip. The gripping portion 11 extends along a gripping axis 101. A control switch 80 for operation is connected to the gripping portion 11. The working state of the reciprocating saw 100 can be controlled by the control switch 80. The control switch 80 has a switch center 801.

[0063] Continue to refer to Figure 2 and Figure 3 , and combined with Figure 8 and Fig. 9 The power supply device is used to provide power to the reciprocating saw 100. In this embodiment, the power supply device is specifically a battery pack 70 connected to the reciprocating saw 100, and the battery pack 70 is at least partially disposed in the grip portion 11. In some embodiments, a battery pack coupling portion is disposed in the grip portion 11, and the battery pack coupling portion is used to install the battery pack 70, and the battery pack 70 is detachably connected to the battery pack coupling portion. The present application hides the battery pack 70 in the grip 11. Compared with the installation method of installing the battery pack 70 outside the housing 10, the appearance is more beautiful, and the operation will not be affected by the protrusion of the battery pack 70; and the center of gravity 104 of the whole machine is optimized, and the center of gravity 104 of the whole machine is closer to the control switch 80. In some embodiments, the straight-line distance L4 from the center of gravity 104 of the reciprocating saw 100 to the switch center 801 is less than or equal to 60 mm. In some embodiments, the distance L1 from the center of gravity 104 of the reciprocating saw 100 to the switch center 801 along the front-to-back direction is less than or equal to 55 mm, making the whole machine more comfortable to hold, less fatigue-prone to operation, and better human-machine control performance. It should be noted that the center of gravity 104 of the whole machine includes the battery pack 70 and the support seat 62, but does not include working accessories such as saw blades.

[0064] like Figure 8 As shown, along the front-to-back direction, the distance from the switch center 801 to the center of gravity 104 of the reciprocating saw 100 is L1, and the distance from the switch center 801 to the front end of the housing 10 is L2, and the ratio of L1 to L2 is less than or equal to 1:2. In one embodiment, the ratio of L1 to L2 is less than or equal to 0.4. In one embodiment, the ratio of L1 to L2 is less than or equal to 0.35. Fig. 9As shown, in some embodiments, the center of gravity 104 of the reciprocating saw 100 is in front of the motor axis 102. In some embodiments, the horizontal distance L5 from the switch center 801 to the motor axis 102 is less than or equal to 40 mm.

[0065] In some embodiments, the battery pack 70 is detachably disposed in the grip portion 11 along the plugging direction, and the angle between the plugging direction and the grip axis 101 is greater than or equal to 0 and less than or equal to 15 degrees. In some embodiments, a portion of the battery pack 70 is contained in the grip portion 11, and another portion is exposed outside the grip portion 11. In other words, the battery pack 70 is at least partially contained in the grip portion 11.

[0066] like Figure 8 As shown, the overall length L3 of the reciprocating saw 100 (the length from the rear end of the housing 10 / battery pack 70 to the front end of the support base 62) is less than or equal to 400 mm. Optionally, the overall length may be 330 mm, 350 mm, or 370 mm. It should be noted that the overall length here includes the support base 62.

[0067] Continue to refer to Figure 2 and Figure 3 , the control board 90 is obliquely placed between the control switch 80 and the motor 20, and the angle between the control board 90 and the motor axis 102 is greater than or equal to 0 and less than or equal to 60 degrees. In some embodiments, the angle between the control board 90 and the motor axis 102 is greater than or equal to 15 degrees and less than or equal to 45 degrees. In some embodiments, the angle between the control board 90 and the motor axis 102 is greater than or equal to 18 degrees and less than or equal to 38 degrees. In some embodiments, the angle between the control board 90 and the motor axis 102 can also be 20 degrees, 25 degrees, 28 degrees, 30 degrees or 35 degrees. Make the overall layout more compact and the overall structure smaller.

[0068] Reference Figures 2 to 7 The transmission assembly 40 includes a first transmission wheel 41 and a second transmission wheel 42. The transmission axis of the first transmission wheel 41 is arranged parallel to the motor axis 102 of the motor shaft 21. The first transmission wheel 41 is meshed with the transmission part at the lower end of the motor shaft 21, so that the first transmission wheel 41 rotates around the transmission axis under the drive of the motor 20. The support shaft 311 is used to support the rotation of the first transmission wheel 41, and the support shaft 311 passes through the first transmission wheel 41 along the direction of the transmission axis. Specifically, one end of the support shaft 311 is fixedly connected to the first transmission wheel 41 and penetrates the first transmission wheel 41 in the direction of the transmission axis, and the other end is rotatably connected to the gear box 30, so that under the support of the support shaft 311, the first transmission wheel 41 can rotate around the transmission axis under the drive of the motor 20.

[0069] The second transmission wheel 42 is provided with an eccentric block 421 and a transmission pin 422 along the diameter direction. The eccentric block 421 and the transmission pin 422 are respectively located at positions away from the center of the circle in the diameter direction of the second transmission wheel 42. The eccentric block 421 is arranged on a side of the second transmission wheel 42 close to the first transmission wheel 41, and a connecting portion 4211 for fixedly connecting to the first transmission wheel 41 is also connected or formed on the eccentric block 421. Specifically, the eccentric block 421 is a cylinder, and a notch 4212 is also formed on one side of the cylinder. The transmission pin 422 is arranged on a side of the second transmission wheel 42 away from the first transmission wheel 41. A matching portion that matches the eccentric block 421 is formed on the first transmission wheel 41, and the matching portion is recessed upward from a side of the first transmission wheel 41 close to the second transmission wheel 42. The first transmission wheel 41 is also formed with a connecting hole for the connecting portion 4211 to be inserted. When the second transmission wheel 42 is fixedly connected to the first transmission wheel 41, the eccentric block 421 can be embedded in the matching portion, and the connecting portion 4211 can be connected to the connecting hole, so that the first transmission wheel 41 and the second transmission wheel 42 can be fixed. At the same time, the part of the support shaft 311 located at the matching portion is also embedded in the notch 4212 of the eccentric block 421, so that the torque of the first transmission wheel 41 can be transmitted to the second transmission wheel 42. Thus, the first transmission wheel 41 can drive the second transmission wheel 42 to rotate around the transmission axis. Since the eccentric block 421 is set at a position away from the center of the second transmission wheel 42, relative to the center of the second transmission wheel 42, when the second transmission wheel 42 rotates, it actually rotates eccentrically.

[0070] During the rotation of the second transmission wheel 42, the transmission pin 422 formed on or connected to the second transmission wheel 42 can output a circular motion with the axis of the support shaft 311 as the center and the distance from the axis of the transmission pin 422 to the axis of the support shaft 311 as the radius. A transmission hole 611 is also formed on the output member 61 to match the transmission pin 422. When the transmission pin 422 passes through the transmission hole 611, it can drive the output member 61 to reciprocate in the front-to-back direction. When the connecting end of the output member 61 is connected to the working accessory, the output member 61 drives the working accessory to reciprocate to cut the workpiece.

[0071] When the first transmission wheel 41 and the second transmission wheel 42 rotate at high speed, due to the eccentric motion, the whole formed by the first transmission wheel 41 and the second transmission wheel 42 will generate a large vibration. In this embodiment, a balancing plate 51 is also arranged between the first transmission wheel 41 and the second transmission wheel 42. The balancing plate 51 reciprocates along the balancing axis 103, and the movement direction of the balancing plate 51 is opposite to that of the output member 61, and the balancing axis 103 is parallel to the output axis of the output member 61. The balancing plate 51 is formed with a through hole and is connected between the first transmission wheel 41 and the second transmission wheel 42 through the eccentric block 421. When the first transmission wheel 41 drives the second transmission wheel 42 to rotate at high speed, the balancing plate 51 can balance the vibration between the two, so that the whole reciprocating saw 100 works in a relatively stable state. In some embodiments, the balancing axis 103 and the output axis of the output member 61 may not be parallel, but form an angle.

[0072] The stability of the support of the balance plate 51 directly affects the vibration reduction effect. In order to improve the stability of the support of the balance plate 51, the reciprocating saw 100 also includes a support member 52, which is used to support the balance plate 51 upward, and the support member 52 is penetrated and pressed onto the gear box 30. Specifically, the gear box 30 includes an upper box body 31 and a lower box body 32 that are connected in abutment, and the support member 52 is penetrated and pressed into the left wall 312 and the right wall 313 of the upper box body 31. The support member 52 and the balance plate 51 are both located in the upper box body 31, which can reduce the size chain formed by the support of the balance plate 51, and also reduce the influence of the processing and installation errors of the parts, so that the balance plate 51 runs more smoothly and smoothly, so as to achieve a better counterweight vibration reduction effect.

[0073] like Figure 5 and Figure 6 As shown, the gear box 30 is an open structure, that is, the upper box body 31 and the lower box body 32 do not completely enclose the transmission assembly 40 inside. In this embodiment, the upper box body 31 does not completely cover the first transmission gear 41. Figure 6 In the side view, only a quarter of the first transmission gear 41 is covered by the upper housing 31. In the side view, the second transmission gear 42 is not completely covered by the upper housing 31. Similarly, the balance plate 51 is not completely covered by the upper housing 31. In the front-to-back direction, the front end of the balance plate 51 is covered by the upper housing 31, and the middle and rear parts are exposed to the outside. By providing such an open gear box 30, the weight of the gear box 30 can be greatly reduced, thereby reducing the weight of the structure of the reciprocating saw 100 located before the motor axis 102, thereby obtaining a more suitable center of gravity position for the whole machine.

[0074] The balance plate 51 of the existing reciprocating saw 100 is located between the first transmission gear 41 and the second transmission gear 42, and the balance plate 51 is in direct surface contact with the first transmission gear 41 and the second transmission gear 42, resulting in large vibration and severe wear. The balance plate 51 of this embodiment is supported by the gear box 30, so that the balance plate 51 is separated from the first transmission gear 41 and the second transmission gear 42, thereby reducing the vibration of the reciprocating saw 100 during operation. In addition, since the balance plate 51 is separated from the first transmission gear 41 and the second transmission gear 42, the wear between the balance plate 51 and the first transmission gear 41 and the second transmission gear 42 is also eliminated, thereby improving the stability of the performance of the reciprocating saw 100 and effectively reducing the temperature rise of the gear box 30.

[0075] The reciprocating saw 100 includes two first positioning columns 53 installed on the gear box 30. The two sides of the balance plate 51 are recessed along the left and right directions to form positioning grooves. The two first positioning columns 53 are positioned and matched with the two positioning grooves in a one-to-one manner. The two first positioning columns 53 limit the balance plate 51 in the left and right directions. The reciprocating saw 100 also includes a second positioning column 54 installed on the gear box 30. The balance plate 51 is provided with a long slot hole 511 extending in the front-to-back direction. The second positioning column 54 is inserted into the long slot hole 511. The second positioning column 54 limits the balance plate 51 in the front-to-back direction. The reciprocating saw 100 also includes a first gasket 55 and a second gasket 56. The first gasket 55 is arranged on the upper end surface of the balance plate 51 and is sleeved on the second positioning column 54. The second gasket 56 is arranged on the lower end surface of the balance plate 51 and is sleeved on the eccentric block 421 on the second transmission gear 42. The first gasket 55 and the second gasket 56 support the balance plate 51 in the up-down direction.

[0076] Reference Fig. 9 In some embodiments, the center of gravity 104 of the reciprocating saw 100 is not lower than the balance board 51 , that is, the center of gravity 104 of the reciprocating saw 100 is higher than the balance board 51 , or falls on the plane where the balance board 51 is located.

[0077] Reference Figure 3 The whole machine has three main axes, including the holding axis 101 of the holding portion 11, the motor axis 102 of the motor shaft 21, and the balancing axis 103 of the balancing plate 51. The holding axis 101 is not perpendicular or parallel to the motor axis 102 and the balancing axis 103, and the motor axis 102 is substantially perpendicular to the balancing axis 103. The above relationship between the three axes can make the whole machine structure more compact; the motor axis 102 is substantially perpendicular to the balancing axis 103, so that the structure of the transmission assembly 40 is relatively simple.

[0078] The balance axis 103 intersects with the grip axis 101 at a first intersection A, and the first intersection A is located inside the grip portion 11. This arrangement makes the relative position and angle between the balance board 51 and the grip portion 11 more reasonable, conforms to the ergonomic setting, and provides a better grip feel and grip experience during long-term work.

[0079] The angle α between the grip axis 101 and the motor axis 102 is greater than 50 degrees and less than 140 degrees. In some embodiments, the angle between the grip axis 101 and the motor axis 102 can be 60 degrees, 70 degrees, 80 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees or 135 degrees. In this way, the grip portion 11 is not too long and can maintain a good grip feel.

[0080] The angle β between the balance axis 103 and the grip axis 101 is greater than or equal to 120 degrees and less than or equal to 170 degrees. In one embodiment, the angle between the balance axis 103 and the grip axis 101 is greater than or equal to 140 degrees and less than or equal to 170 degrees. In some embodiments, the angle between the balance axis 103 and the grip axis 101 can be 155 degrees, 160 degrees, or 165 degrees.

[0081] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A reciprocating saw comprising: A housing (10) is formed with a receiving space; A motor (20) is arranged in the accommodation space, and the motor (20) comprises a motor shaft (21) rotating around a motor axis (102); A transmission assembly (40) is disposed in the accommodation space and connected to the motor shaft (21); An output member (61) is connected to the transmission assembly (40), and the transmission assembly (40) is capable of converting the rotation of the motor shaft (21) into reciprocating motion of the output member (61) along an output axis; A control switch (80) for controlling the working state of the reciprocating saw (100); It is characterized by further comprising: A balancing plate (51) moves along a balancing axis (103), wherein the balancing plate (51) is used to balance the movement of the output member (61); A gripping portion (11) formed on the housing (10), the gripping portion (11) extending along a gripping axis (101), the balancing axis (103) intersecting with the gripping axis (101) at a first intersection point (A), the first intersection point (A) being located inside the gripping portion (11); The reciprocating saw (100) is powered by a battery pack (70), and the battery pack (70) is at least partially disposed in the grip portion (11).

2. The reciprocating saw according to claim 1, characterized in that: It also comprises a battery pack combining portion, the battery pack combining portion being arranged in the holding portion (11), the battery pack combining portion being used to install the battery pack (70), and the battery pack (70) being detachably connected to the battery pack combining portion.

3. The reciprocating saw according to claim 1, characterized in that: It also includes a control board (90), wherein the control board (90) is obliquely disposed between the control switch (80) and the motor (20), and the angle between the control board (90) and the motor axis (102) is greater than or equal to 0 degrees and less than or equal to 60 degrees.

4. The reciprocating saw according to claim 1, characterized in that: The motor axis (102) is substantially perpendicular to the balancing axis (103).

5. The reciprocating saw according to claim 1, characterized in that: The angle between the balance axis (103) and the gripping axis (101) is greater than or equal to 140 degrees and less than or equal to 170 degrees.

6. The reciprocating saw according to any one of claims 1 to 5, characterized in that: The entire length of the reciprocating saw (100) is less than or equal to 400 mm.

7. The reciprocating saw according to any one of claims 1 to 5, characterized in that: The control switch (80) has a switch center (801), and the straight-line distance from the switch center (801) to the center of gravity (104) of the reciprocating saw (100) is less than or equal to 60 mm.

8. The reciprocating saw according to any one of claims 1 to 5, characterized in that: The control switch (80) has a switch center (801). In the front-to-back direction, the distance from the switch center (801) to the center of gravity (104) of the reciprocating saw (100) is L1, and the distance from the switch center (801) to the front end of the housing (10) is L2. The ratio of L1 to L2 is less than or equal to 1:

2.

9. The reciprocating saw according to claim 1, characterized in that: It also includes a support member (52) and a gear box (30), wherein the support member (52) is used to support the balance plate (51), the gear box (30) includes an upper box body (31) and a lower box body (32) that are connected to each other, and the support member (52) is fixed to the upper box body (31) in the left-right direction.

10. The reciprocating saw according to claim 9, characterized in that The gear box (30) is an unclosed open structure.

11. The reciprocating saw according to claim 1, characterized in that The angle between the balance axis (103) and the grip axis (101) is greater than or equal to 120 degrees and less than or equal to 170 degrees.

12. A reciprocating saw comprising: A housing (10) is formed with a receiving space; A motor (20) is arranged in the accommodation space, and the motor (20) comprises a motor shaft (21) rotating around a motor axis (102); A transmission assembly (40) is disposed in the accommodation space and connected to the motor shaft (21); An output member (61) is connected to the transmission assembly (40), and the transmission assembly (40) is capable of converting the rotation of the motor shaft (21) into reciprocating motion of the output member (61) along an output axis; A control switch (80) for controlling the working state of the reciprocating saw (100); It is characterized by further comprising: A balancing plate (51) moves along a balancing axis (103) and is used to balance the movement of the output member (61); A gripping portion (11) formed on the housing (10), the gripping portion (11) extending along a gripping axis (101); a battery pack coupling portion, the battery pack coupling portion being arranged in the grip portion (11), the battery pack coupling portion being used to install a battery pack (70), the battery pack (70) being used to supply power to the reciprocating saw (100); The included angle between the holding axis (101) and the motor axis (102) is greater than or equal to 50 degrees and less than or equal to 140 degrees.

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