CN110744135B

CN110744135B - Hand-held band saw

Info

Publication number: CN110744135B
Application number: CN201911042736.4A
Authority: CN
Inventors: 周洋; 邵官海; 吹拔正敏; 高�浩
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2024-03-15
Anticipated expiration: 2039-10-30
Also published as: CN110744135A

Abstract

The invention relates to an electric tool, and discloses a handheld band saw, which comprises a band saw main body and an adjusting device, wherein the adjusting device is connected with a first shell and at least partially arranged in a cutting area, the adjusting device comprises a fixing piece, a sliding piece, a fence piece and a connecting component, the fixing piece is fixedly connected with the first shell, and the sliding piece is in sliding connection with the fixing piece; the leaning gate piece is connected with the sliding piece; the connecting component is connected with the sliding piece and the leaning grid piece, and when the sliding piece moves, the connecting component can enable the leaning grid piece to move along with the sliding piece. The invention improves the leaning grid adjusting device, and the control component arranged in the leaning grid adjusting device is utilized to realize the purpose of adjusting the height of the leaning grid piece without other tools.

Description

Hand-held band saw

Technical Field

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

Background

Currently, hand-held band saws are quite widely used for cutting all workable metals, tubing, solids, etc., including stainless steel. Has strong heat resistance, abrasion resistance and shock resistance, and has longer service life compared with similar products. Because of the advantages of flexible and convenient use, the utility model has been widely applied to the occasions of cutting various bar materials, pipe materials and sectional materials in industry, families and the like.

In order to facilitate cutting, a fence piece for supporting a workpiece is arranged on the side edge of the saw blade for cutting, when cutting is performed, a user can support the workpiece by adjusting the height of the fence piece, but the fence piece configured on the band saw product on the market at present needs to be performed by using an external tool when the height is adjusted, and the use convenience and the experience are insufficient.

Disclosure of Invention

In order to solve the above problems, the present invention provides a hand-held band saw with an improved fence structure.

The invention provides the following technical scheme:

a hand-held band saw comprising: the shell assembly comprises a first shell, a second shell and a third shell, wherein the second shell is arranged at intervals with the first shell, the third shell is connected with the first shell and the second shell, and a cutting area is formed among the first shell, the second shell and the third shell; the first rotating wheel is at least partially arranged on the first shell; the second rotating wheel is at least partially arranged on the second shell; the motor is arranged in the shell assembly and can drive one of the first rotating wheel and the second rotating wheel to rotate; the saw blade is connected with the first rotating wheel and the second rotating wheel; the adjusting device is connected with the first shell and at least partially arranged in the cutting area; wherein, the adjusting device includes: the fixing piece is fixedly connected with the first shell; the sliding piece is connected with the fixing piece in a sliding way; the grid leaning piece is connected with the sliding piece;

And the connecting component is connected with the sliding piece and the leaning grid piece, and when the sliding piece moves, the connecting component can enable the leaning grid piece to move along with the sliding piece.

Optionally, the fence member is movable between a first position and a second position relative to the fixing member in a first sliding direction; at least one intermediate position exists between the first position and the second position.

Optionally, the adjusting device further comprises: a control assembly mounted to the slider; the control assembly is connected with the fixing piece and used for preventing the sliding piece from being separated from the fixing piece to slide freely.

Optionally, the fixing piece is provided with a plurality of clamping grooves; the control assembly includes: a control button for a user to actuate the slider to move between the first position and the second position in a direction parallel to the first sliding direction; the stop piece is used for being clamped with the clamping groove, and when the sliding piece is positioned at the first position, the second position or the middle position, the stop piece is clamped with the clamping groove, so that the sliding piece is basically fixed relative to the fixing piece.

Optionally, the control assembly further comprises: and the elastic piece is connected between the sliding piece and the control button and is used for resetting the control button.

Optionally, the control button is integrally formed with the stop.

Optionally, the gate member is forced to move to a third position at the intermediate position, and the connection assembly is capable of generating a dampening force opposite the direction of movement, the dampening force being capable of moving the gate member from the third position to the intermediate position.

Optionally, the connection assembly includes: and the buffer piece is arranged between the sliding piece and the leaning grid piece, is arranged along the direction parallel to the first sliding direction and is used for resetting the leaning grid piece.

Optionally, the connection assembly further comprises: the guide rod is arranged along the first sliding direction and is connected with the sliding piece; the buffer piece is a spring which is sleeved on the guide rod.

Optionally, the grid leaning piece is provided with a protrusion extending along the direction perpendicular to the first sliding direction; one end of the guide rod is detachably connected with the sliding piece, and the other end of the guide rod is movably connected with the bulge

The beneficial effects of the invention are as follows: through improvement leaning on bars adjusting device, utilize the control assembly who sets up in it to realize the purpose that need not to rely on other instruments can adjust leaning on bars spare height.

Drawings

FIG. 1 is a schematic perspective view of a hand-held band saw in a second cutting direction;

FIG. 2 is a schematic perspective view of the hand-held band saw of FIG. 1 in a first cutting direction;

FIG. 3 is a schematic perspective view of the hand-held band saw of FIG. 1 from another perspective;

FIG. 4 is a schematic view of the back perspective of the hand band saw of FIG. 1;

FIG. 5 is a schematic view of the adjustment device of the hand-held band saw of FIG. 1 in a second position;

FIG. 6 is a front view of the hand-held band saw of FIG. 1;

FIG. 7 is a schematic view of the first and second guide mechanisms of the hand-held band saw of FIG. 1;

FIG. 8 is a schematic view of the hand held band saw auxiliary handle of FIG. 1 in a handle neutral position;

FIG. 9 is a schematic view of the hand held band saw auxiliary handle of FIG. 1 in a first extreme position

FIG. 10 is a schematic view of the hand held band saw auxiliary handle of FIG. 1 in a second extreme position;

FIG. 11 is a schematic view of the hand-held band saw of FIG. 1 showing the adjustment mechanism in a first position;

FIG. 12 is a cross-sectional view taken along line A-A of FIG. 11;

FIG. 13 is a schematic view of the hand held band saw of FIG. 1 showing the adjustment mechanism in an intermediate position;

FIG. 14 is a schematic view of the hand held band saw of FIG. 1 showing the adjustment mechanism in a second position;

FIG. 15 is a schematic view of the adjustment device of the hand-held band saw of FIG. 1 in a forced collapsed condition;

FIG. 16 is an enlarged view of a portion of the view shown in FIG. 1;

FIG. 17 is an enlarged view of a portion of the view shown in FIG. 2;

FIG. 18 is an enlarged view of a portion of the view shown in FIG. 3;

FIG. 19 is an enlarged view of a portion of the view shown in FIG. 4;

FIG. 20 is an exploded view of the auxiliary handle of the hand band saw of FIG. 1;

FIG. 21 is a schematic view of the activation device of the hand-held band saw of FIG. 20;

fig. 22 is a cross-sectional view of fig. 21 taken along the direction B-B.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Moreover, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present invention.

Referring to fig. 1 to 4, in one embodiment, a power tool, particularly a hand-held band saw, is provided, and a hand-held band saw 100 of the present invention includes: the housing assembly 110, the first rotating wheel 116, the second rotating wheel 117 and a motor (not shown in the drawings) are provided in the housing assembly 110, the handle 120 is connected to the housing assembly 110, the auxiliary handle 130 is rotatably connected to the housing assembly 110, the auxiliary grip 134 is connected to the auxiliary handle 130, the adjusting device 140, the first guide mechanism 150, the limit mechanism 170 and the actuating device 220 are mounted to the connecting assembly 110, and the saw blade 180 connects the first rotating wheel 116 and the second rotating wheel 117.

Further, the housing assembly 110 includes: a first housing 111, a second housing 112 disposed at a distance from the first housing 111, and a third housing 113 connecting the first housing 111 and the second housing 112. Wherein a cutting area 114 is formed among the first housing 111, the second housing 112 and the third housing 113.

The first rotating wheel 116 is partially disposed in the first housing 111, and the first rotating wheel 116 is rotatable about the first central axis 101. The second rotating wheel 117 is partially disposed in the second housing 112, and the first rotating wheel 116 is rotatable about the second central axis 102. Of course, the first rotating wheel 116 and the second rotating wheel 117 may be completely disposed in the first housing 111 and the second housing 112, respectively.

The motor may also be disposed in the first housing 111, the second housing 112 or the third housing 113, in this embodiment, the motor is disposed in the third housing 113, a receiving space is formed in the specific third housing 113, the motor is disposed in the receiving space, and the motor is used for driving the first rotating wheel 116 to rotate relative to the first housing 111, and the saw blade 180 drives the second rotating wheel 117 to rotate relative to the second housing 112. It will also be appreciated that a motor may be used to drive the second rotating wheel 117 to rotate the second rotating wheel 117 relative to the second housing 112, and the saw blade 180 may be used to rotate the first rotating wheel 116 relative to the first housing 111.

Referring to fig. 5, the adjusting device 140 is connected to the first housing 111 and is partially disposed in the cutting area 114, and the adjusting device 140 includes a fixing member 141, a sliding member 142, a fence member 143 and a connecting assembly 144. The fixing member 141 is fixedly connected to the first housing 111, and in this embodiment, a plurality of through holes 1411 are formed in the fixing member 141, and screws are fixed to the first housing 111 through the through holes 1411. The sliding member 142 is slidably connected to the fixing member 141, that is, it is understood that the sliding member 142 can reciprocate or releasably maintain a certain position with respect to the fixing member 141 along the first sliding direction a. The fence member 143 is used for abutting against a cut workpiece, the fence member 143 is connected with the sliding member 142 through the connecting assembly 144, and the connecting assembly 144 is fixedly connected with the sliding member 142, namely, when the sliding member 142 moves, the fence member 143 can move along with the sliding member 142, so that the fence member 143 is positioned at different positions in the first sliding direction a, and the height of the fence member 143 is adjusted through the sliding member 142 to match different cut workpieces.

Referring to fig. 11 to 14, when the fence 143 moves in the first sliding direction a, there are at least two positions: the first position and the second position, i.e., the grill 143, are moved between the first position and the second position. Of course, depending on the different operating conditions, one or several intermediate positions may also be present between the first position and the second position.

The adjusting device 140 further includes: the control assembly 145 is used for a user to actuate the slider 142, move the fence 143 between the first position and the second position, or hold the fence 143 in one of the first position, the second position, or the intermediate position. Specifically, the fixing member 141 is provided with a plurality of engaging grooves 1412. The control assembly 145 includes: a control button 1451, a stopper 1452 and an elastic member 1453. The elastic member 1453 is connected to the control button 1451, and in this embodiment the elastic member 1453 may be a spring. The control button 1451 is used for being operated by a user, and when the control button 1451 is in an original state, that is, a state in which the spring is not deformed due to force in the present embodiment, the stop 1452 is matched with the clamping groove 1412, the gate member 143 is relatively and fixedly maintained at a certain position of the first position, the second position or the middle position. When the user presses the control button 1451, the stopper 1452 is disengaged from the engagement groove 1412, so that the slider 142 can move freely with respect to the fixing member 141. When the control button 1451 loses the external force, the control button 1451 can be restored to the original state by the force of the elastic member 1453. Specifically, the control button 1451 is integrally formed with the stop 1452 and rotates about the rotational axis 103. The same control button 1451 and stop 1452 may also be fixedly coupled and rotated about the axis of rotation 103. In the present embodiment, the first position is the original position (as shown in fig. 11), that is, the position where the gate member 143 is disposed near the third housing 113 along the first sliding direction a, and the stopper 1452 is engaged with the engagement groove 1412. The second position is an extended position (as shown in fig. 14), where the fence 143 is used to match with a larger cut workpiece, that is, the fence 143 is disposed away from the third housing 113 along the first sliding direction a, and the stopper 1452 is engaged with the engagement groove 1412. The intermediate position is a position between the original position and the extended position, and the stopper 1452 is engaged with the engagement groove 1412 (as shown in fig. 13). In the present invention, the intermediate position is not necessarily limited to a position between the first position and the second position, and the stopper 1452 may be engaged with the engagement groove 1412. The non-coupling position is intermediate between the first position and the second position, and the stopper 1452 is not engaged with the engagement groove 1412. When the user presses the control button 1451 to adjust the position of the fence member 143, a normal operation of adjusting the fence member 143 to be in any one of the first position, the second position, or the intermediate position may be performed, or an abnormal operation of adjusting the fence member 143 to be in the non-coupling position may be performed. Therefore, the height of the leaning gate member 143 can be adjusted by changing the corresponding relation between the control button 1451 and the different clamping grooves 1412, so that no external tool is needed, and the method is more convenient and trouble-saving and has stronger experience.

Referring to fig. 15, when the fence 143 is in the middle position, and the hand-held band saw 100 is subject to an unexpected drop, the fence 143 receives a larger external force when contacting the ground or other objects, and the fence 143 is forced to collapse in the first sliding direction a, i.e. the fence 143 moves in the first sliding direction a in a direction approaching the third housing 113, i.e. the fence 143 moves in the middle position to the third position, thereby avoiding direct rigid collision between the fence 143 and the ground or other objects, and achieving the purpose of avoiding drop damage. When the leaning gate member 143 is at the third position and the external force applied to the leaning gate member 143 disappears, the connecting assembly 144 can generate a buffering force opposite to the moving direction, so that the leaning gate member 143 moves from the third position to the middle position, thereby avoiding the user from adjusting the leaning gate member 143 again and greatly improving the convenience of operation. Wherein the third position is between the first position and the second position, the third position refers to the farthest position where the rest grid member 143 can move towards the third housing 113 under the condition of larger external force, and the specific position of the third position is not determined because the magnitude of the external force is not determined each time, as the case may be.

As an alternative embodiment, the connecting assembly 144 includes a buffering member 1441 for resetting the leaning member 143, the buffering member 1441 is disposed between the sliding member 142 and the leaning member 143 and is disposed along a direction parallel to the first sliding direction a, specifically, the sliding member 142 includes a receiving groove 1421 and a connecting portion 1422, the connecting portion 1422 is disposed on one side of the receiving groove 1421, the buffering member 1441 is at least partially disposed in the receiving groove 1421, and one end of the buffering member 1441 is connected with the connecting portion 1422, and the other end of the buffering member 1441 is connected with the leaning member 143. Due to the buffer member 1441, when the leaning gate member 143 falls or is rigidly collided with an object to generate stress collapse, the leaning gate member 143 can retract and slide to a certain extent in the stress collapse direction, so as to achieve the purpose of avoiding the falling damage of the leaning gate member 143 or the falling damage of the control component 145.

Further, the connecting assembly 144 further includes a guiding rod 1442, wherein the guiding rod 1442 is disposed along the first direction and is fixedly connected to the sliding member 142, such that the guiding rod 1442 moves along with the sliding member 142 when the sliding member 142 moves. Specifically, a pin may be used to connect the sliding member 142 with one end of the guiding rod 1442, and other manners are also used to fixedly connect the guiding rod 1442 with the sliding member 142, for example, an external thread is provided at one end of the guiding rod 1442, an internal thread is provided in the connecting portion 1422, and the guiding rod 1442 is in threaded connection with the connecting portion 1422. The other end of the guiding rod 1442 is movably connected with the leaning rod 143, so as to limit the leaning rod 143 to move freely away from the guiding rod 1442, the specific leaning rod 143 is provided with a protrusion 1431, the protrusion 1431 extends along the direction perpendicular to the first sliding direction a, and the other end of the guiding rod 1442 passes through the protrusion 1431 and is matched with the pin, so that the protrusion 1431 cannot be separated from the guiding rod 1442. In the present invention, the buffer member 1441 may be a spring, which is sleeved on the guide rod 1442, wherein one end of the spring abuts against the buffer member 1441 and the other end abuts against the protrusion 1431. The improved adjusting device 140 has the advantages of simple structure, low preparation cost, convenient operation and suitability for popularization and use.

Referring to fig. 1-5, a first guide mechanism 150 is coupled to the housing assembly 110 for guiding movement of the saw blade 180 in the first cutting direction b within the cutting zone 114. The spacing mechanism 170 is coupled to the housing assembly 110 for preventing the saw blade 180 from crossing a predetermined position, preventing the saw blade 180 from cutting properly, and also supporting the saw blade 180 to facilitate proper operation of the machine.

As a possible embodiment, the first guide mechanism 150 includes a first guide assembly 151 and a second guide assembly 152, where the first guide assembly 151 is mounted to the first housing 111 and the second guide assembly 152 is mounted to the second housing 112, and the first guide assembly 151 and the second guide assembly 152 cooperate to move the saw blade 180 in the first cutting direction b within the cutting zone 114.

When the hand band saw 100 is in operation, i.e., the blade 180 in the cutting zone 114 is moved in the first cutting direction b, the blade 180 will move from the first cutting position to the second cutting position and the stop mechanism 170 prevents the blade 180 from passing the second cutting position. The first cutting position refers to the position where the saw blade 180 is mounted on the first guide mechanism 150, the second cutting position is called a predetermined position, that is, the position, closest to the limiting mechanism 170, where the saw blade 180 can move on the first guide mechanism 150 under the action of the limiting mechanism 170, of the saw blade 150, in practical use, it can be easily found that the first cutting position is not fixed due to each mounting or operation, and of course, there is a case where the first cutting position coincides with the second cutting position, that is, the initial position of the saw blade 180 on the first guide mechanism 150 is the position where the saw blade 180 is located at the second cutting position. The above design is used for preventing the saw blade 180 from continuously moving in an offset manner when moving, so as to prevent the saw blade 180 from crossing the second cutting position, ensure the normal use of the hand-held band saw 100, prevent the equipment failure caused by the separation of the saw blade 180, influence the normal operation of the equipment, increase the cost of later repair and maintenance, and slow the work efficiency.

Referring to fig. 16 and 17, the limiting mechanism 170 includes a first limiting member 171 and a second limiting member 172. The first stopper 171 is connected to the first housing 111, and the first stopper 171 is rotatable about the first rotation axis 104, the second stopper 172 is connected to the second housing 112, and the second stopper 172 is rotatable about the second rotation axis 105 parallel to the first rotation axis 104. When the saw blade 180 is in the second cutting position, i.e. the saw blade 180 is at least partially in contact with the first stop 171, while the saw blade 180 is also at least partially in contact with the second stop 172, at this point at least part of the saw blade 180 at the location in contact with the first stop 171 intersects the direction of the first axis of rotation 104, while at least part of the saw blade 180 at the location in contact with the second stop 172 intersects the direction of the second axis of rotation 105, i.e. it can be understood that the saw blade 180 at the location in contact with the first stop 171 intersects the direction of the first axis of rotation 104, while the saw blade 180 at the location in contact with the second stop 172 intersects the direction of the second axis of rotation 105. The saw blade 180 also at the position where the first stopper 171 contacts the saw blade 180 is perpendicular to the direction of the first rotation axis 104, while the saw blade 180 at the position where the second stopper 172 contacts the saw blade 180 is perpendicular to the direction of the second rotation axis 105. As an alternative embodiment, the saw blade 180 includes a back 181, a saw blade (not shown), a first side (not shown), and a second side 182. The saw back 181 is disposed opposite a saw blade for cutting a workpiece, and the first side is disposed opposite a second side 182 that is at least partially in contact with the first guide mechanism 150. When the saw blade 180 is in the second cutting position, the back 181 is at least partially in contact with the first stop 171, and the second side 182 at the point where the back 181 is in contact with the first stop 171 is substantially parallel to the first surface 1711 of the first stop 171, while the back 181 is at least partially in contact with the second stop 172, and the second side 182 at the point where the back 181 is in contact with the second stop 172 is also substantially parallel to the second surface 1721 of the second stop 172. Thus, the stable operation of the machine can be better kept. As another alternative embodiment, when the saw blade 180 is in the second cutting position, the back of the saw 181 is at least partially in contact with the first stop 171, a plane passing through the first stop 171 and perpendicular to the first axis of rotation 104 is substantially parallel to the second side 182 at the location where the back of the saw 181 is in contact with the first stop 171, while the back of the saw 181 is at least partially in contact with the second stop 172, and a plane passing through the second stop 172 and perpendicular to the second axis of rotation 105 is substantially parallel to the second side 182 at the location where the back of the saw 181 is in contact with the second stop 172.

The hand band saw 100 also includes a second guide mechanism 160 for guiding the saw blade 180 in a second cutting direction within the cutting zone 114, the second guide mechanism 160 being coupled to the housing assembly 110. Specifically, the second guiding mechanism 160 includes a third guiding assembly 161 and a fourth guiding assembly 162. The third guiding component 161 is connected to the first shell 111, the fourth guiding component 162 is connected to the second shell 112, the third guiding component 161 and the fourth guiding component 162 are matched with each other, so that the saw blade 180 moves along the second cutting direction c in the cutting area 114, a group of guiding mechanisms are added, a user can adjust the assembly mode according to the needs in actual operation, and the cutting path of the formed multi-angle hand-held band saw 100 is utilized, so that the smooth cutting work is ensured by changing the angle of the saw blade 180 of the cutting section by switching the installation path under the special condition that the conventional hand-held band saw 100 cannot cut or is inconvenient to cut.

It should be understood that the first rotating wheel 116 and the second rotating wheel 117 are disposed substantially symmetrically with respect to the bisecting plane P2 passing through the cutting area 114, and in particular, the first housing 111 and the second housing 112 are disposed substantially symmetrically with respect to the bisecting plane P2, so that the first guide assembly 151 and the second guide assembly 152 are disposed substantially symmetrically along the bisecting plane P2, the third guide assembly 161 and the fourth guide assembly 162 are disposed substantially symmetrically along the bisecting plane P2, and the first limiting member 171 and the second limiting member 172 are disposed substantially symmetrically along the bisecting plane P2.

Referring to fig. 6 to 7, the first guide assembly 151 includes a first guide 1511, the second guide 152 includes a second guide 1521, the first guide 1511 rotates around the first rotation axis 106, the first rotation axis 106 intersects with the first rotation axis 104, and the second guide 1521 rotates along a direction parallel to the first rotation axis 106 and the first rotation axis 106 intersects with the second rotation axis 105 because the first guide assembly 151 and the second guide 152 are substantially symmetrically disposed along the bisecting plane P2. Preferably, the first axis of rotation 106 is perpendicular to the first axis of rotation 104, which facilitates machining by the machine. The third guide assembly 161 includes a third guide 1611 and a fourth guide 1612, the third guide 1611 being rotatable about the second axis of rotation 107, the fourth axis of rotation being adjacent to the third guide 1611, and the fourth guide 1612 being rotatable about a direction substantially parallel to the second axis of rotation 107, the saw blade 180 being disposed between the third guide 1611 and the fourth guide 1612. The fourth guide assembly 162 includes a fifth guide 1621 and a sixth guide 1622, the fifth guide 1621 being disposed substantially symmetrically with respect to the third guide 1611 along a median plane P2, the fifth guide 1621 being rotatable about a direction substantially parallel to the second axis of rotation 107, the sixth guide 1622 being disposed adjacent the fifth guide 1621 and substantially symmetrically with respect to the fourth guide 1612 along a median plane P2, the sixth guide 1622 being rotatable about a direction substantially parallel to the second axis of rotation 107, the saw blade 180 being disposed between the fifth guide 1621 and the sixth guide 1622. The first rotation axis 106 intersects the second rotation axis 107, and the preset angle is α, so that when the workpiece is cut, the saw blade 180 is disposed obliquely in the gravity direction or in a direction intersecting the gravity direction, that is, the saw blade 180 moves in the second cutting direction c in the cutting area 114, wherein the second rotation axis 107 is substantially consistent with the second cutting direction c, but in practice, in order to cut the workpiece intersecting the gravity direction, that is, the saw blade 180 moves in the first cutting direction b in the cutting area 114, wherein the first rotation axis 106 is substantially consistent with the first cutting direction b. In summary, the preset angle α formed by the first rotation axis 106 and the second rotation axis 107 is less than or equal to 90 degrees, and in this embodiment, the preset angle α ranges from 20 degrees to 55 degrees, preferably from 30 degrees to 45 degrees.

The first guide mechanism 150 and the second guide mechanism 160 are coupled to an intermediate connection assembly 190, and the intermediate connection assembly 190 is fixedly coupled to the housing assembly 110. Specifically, the intermediate connection assembly 190 includes a first intermediate connection 191 and a second intermediate connection 192. The first and second guide assemblies 151 and 152 are mounted to the first and second intermediate connection parts 191 and 192, respectively, the first and second intermediate connection parts 191 and 192 are mounted to the first and second housings 111 and 112, respectively, and the third and fourth guide assemblies 161 and 162 are mounted to the first and second intermediate connection parts 191 and 192, respectively. More specifically, the first intermediate connection portion 191 may be fastened to the first housing 111 with a screw, and the second intermediate connection portion 192 may be fastened to the second housing 112 with a screw. The stopper mechanism 170 is connected to the intermediate connection assembly 190, and the first stopper 171 and the second stopper 172 are connected to the first intermediate connection portion 191 and the second intermediate connection portion 192, respectively.

As another alternative embodiment, as shown in fig. 8, the first housing 111 includes a first extension 1111, the second housing 112 includes a second extension 1121, the first and second stoppers 171 and 172 are respectively connected to the first and second extensions 1111 and 1121, and the first and second guide mechanisms 150 and 172 are connected to the intermediate connection assembly 190. Specifically, the first and second guide assemblies 151 and 152 are mounted to the first and second intermediate connection parts 191 and 192, respectively, and the third and fourth guide assemblies 161 and 162 are mounted to the first and second intermediate connection parts 191 and 192, respectively.

Specifically, the first, second, third, fourth, fifth and sixth guides 1511, 1521, 1611, 1612, 1621, 1622, 171 and 172 are rolling bearings, and the first, third and fourth guides 1511, 1611 and 1612 are screw-fitted to the first intermediate connection 191, and the second, fifth and sixth guides 1521, 1621 and 1622 are screw-fitted to the second intermediate connection 192.

Referring to fig. 1 to 6, the first housing 111 is formed with a first outer surface 1112, the second housing 112 is formed with a second outer surface 1122, and two ends of the handle 120 are fixedly connected to the first outer surface 1112 and the third housing 113, respectively, although two ends of the handle 120 may be integrally formed with the first outer surface 1112 and the third housing 113, respectively. The first rotating wheel 116 and the second rotating wheel 117 are respectively provided below the first housing surface 1112 and the second housing surface 1122, and the handle 120 is located above the first housing surface 1112.

The auxiliary handle 130 is rotatably connected to the second housing 112, but the auxiliary handle 130 may be rotatably connected to the third housing 113. Specifically, the auxiliary handle 130 includes: the first holding part 131, the second holding part 132 arranged at intervals with the first holding part 131, the third holding part 133 is connected with one ends of the first holding part 131 and the second holding part 132, the connecting part 1422 is connected with the other ends of the first holding part 131 and the second holding part 132, the extending part 137 is connected to the first holding part 131 and is adjacent to one end of the connecting part 1422, the auxiliary holding part 134 is connected to the extending part 137, and the auxiliary holding part 134 is positioned on the upper side of the second housing surface 1122, according to the arrangement, a user can place the hand held on the auxiliary holding part 130 on the auxiliary holding part 134 when the hand-held band saw 100 is operated, so that the stability of the body of the hand-held band saw 100 can be maintained, the situation that a workpiece is uneven due to left and right shaking of the body caused by vibration in the cutting process can be prevented, and meanwhile, the hand originally placed on the auxiliary holding part can be placed on the auxiliary holding part, so that the holding hand is released, and the operation is easier and more labor-saving.

Optionally, the auxiliary gripping portion 134 is fixedly connected to the extending portion 137 or integrally formed therewith, that is, the auxiliary gripping portion 134 is capable of rotating relative to the housing assembly 110, and in a specific operation, a user holds the handle 120 with one hand and places the other hand on the auxiliary gripping portion 134, and the hand-controlled starting device 220 on the handle 120 starts the hand-held band saw 100 to perform a cutting operation. And the user performs real-time operation adjustment according to the actual operation position of the cut workpiece. The auxiliary holding part 134 is additionally arranged on the basis of the structure of the auxiliary handle 130, so that when a user cuts a workpiece, the original arm for lifting, pressing and applying force to the auxiliary handle 130 is moved away, the condition that the arm blocks the line of sight is avoided, and particularly, when the user needs to bend down to operate the workpiece at a relatively low position, the arm for lifting, pressing and applying the auxiliary handle 130 can easily shield the view of the user, and the cutting accuracy of the user is affected.

Alternatively, the handle 120 has a handle center plane P1, and the first grip portion 131 and the second grip portion 132 are disposed substantially parallel to the handle center plane P1, respectively. The angle formed by the intersection of the handle middle plane P1 and the first outer shell surface 1112 is 135 degrees to 155 degrees, preferably 140 degrees to 150 degrees, and the handle middle plane P2 is substantially parallel to the second cutting direction c, that is, when the user operates the hand-held band saw 100 to cut a workpiece along the second cutting direction c, the extending direction of the handle 120 is consistent with the gravity direction of the machine at the moment, so that the user experience is improved, and the hand-held band saw 100 can stably run and cut normally.

The handle 120 has a handle operating portion 126 for a user to operate the hand-held band saw 100. By providing the hand-held band saw 100 with a predetermined plane P3, the first and second housing surfaces 1112 and 1122 are at least partially disposed within the predetermined plane P3, and the maximum distance between the handle 120 and the predetermined plane P3 in a direction perpendicular to the predetermined plane P3 is greater than the maximum distance between the auxiliary grip 134 and the predetermined plane P3 in a direction perpendicular to the predetermined plane P3. The auxiliary holding portion 134 is disposed on the upper side of the preset plane P3, and on the lower side of the handle operation portion 126, i.e. when the user holds the auxiliary holding portion 126 with one hand, the other hand, which is originally held on the auxiliary handle 130, can be held on the auxiliary holding portion 134 that is lower than the handle operation portion 126 and is adjacent to the first housing surface 1112, i.e. when the user holds the hand-held band saw 100, the height of the machine can be reduced, and the gravitational potential energy of the machine in the gravitational direction can be reduced, so that the user is in a more labor-saving state.

The user holds the auxiliary holding part 134 and applies an auxiliary force to the body of the hand-held band saw 100 from the side direction, so that the user can easily and labor-saving in operation, does not need to expend effort to lift or lower the body, and can selectively hold the holding top surface 1345 of the auxiliary holding part 134 to keep the body stable; the auxiliary gripping portion 134 may be lifted from the gap between the second housing surface 1122 to keep the machine body stable and complete the machining operation. Based on the design of the auxiliary holding part 134 structure, the original vertical force is changed into the side auxiliary supporting force, so that the stability of the hand-held band saw 100 body is better maintained during cutting, and the situation of uneven workpiece notch caused by left and right shaking of the body due to vibration in the cutting process is prevented.

Referring to fig. 6, 9, 10, 18 and 19, the auxiliary holding portion 134 includes a first holding side 1341, a second holding side 1342 and a holding bottom 1346, wherein the first holding side 1341 is disposed adjacent to the second holding side 1342, and specifically, the extending portion 137 of the auxiliary handle 130 has an extending end, and the extending end is fixedly connected or integrally formed with a portion of the first holding side 1341 adjacent to the second holding side 1342, so as to facilitate processing. Further, the hand-held band saw 100 further includes a battery pack 135 for providing power to the hand-held band saw 100, and in particular, the battery pack 135 has a connection port that mates with a connection socket provided on the third housing 113. The second housing 1122 has a central surface 1123, and the central surface 1123 extends within the predetermined plane P3. The auxiliary handle 130 is rotatable about the rotation axis 108, and there is a first limit position and a second limit position during rotation of the auxiliary handle 130, the first limit position being a position where the auxiliary handle 130 contacts the second housing 112 (as shown in fig. 9), the second limit position being a position where the auxiliary handle 130 contacts the battery pack 135 (as shown in fig. 10), and at least one handle intermediate position (as shown in fig. 6) between the first limit position and the second limit position, such that the grip bottom surface 1346 is substantially parallel to the central surface 1123 of the second housing surface 1122. As another embodiment, the portion of the bottom surface 1346 of the auxiliary gripping portion 134 is located in the gripping plane P4, and it is understood that the bottom surface 1346 is not a plane, but may be other shapes, where the portion of the bottom surface 1346 is located in the gripping plane P4, i.e. the gripping plane P4 rotates with the auxiliary gripping portion 134, and the gripping plane P4 also has a first limit position and a second limit position during rotation, and a middle position of the handle is located between the first limit position and the second limit position, so that the gripping plane P4 is substantially parallel to the central surface 1123 of the second housing surface 1122.

The hand-held band saw 100 further includes: the tensioning assembly 115 is used for adjusting the position of the saw blade 180 so that the saw blade 180 maintains reasonable tension in the working process and ensures the normal operation of the machine. Specifically, the tensioning assembly 115 includes a knob 1151, the knob 1151 is rotatably connected to the second housing 112, and the knob 1151 is disposed between the second housing 1122 and the auxiliary grip 134, so as to prevent the knob 1151 from contacting the auxiliary grip 134 during rotation. More specifically, the knob 1151 has a top surface 1152, and when the auxiliary handle 130 is in the middle position of the handle, the minimum distance from the bottom surface 1346 of the auxiliary grip 134 to the second housing surface 1122 in the direction perpendicular to the preset plane P3 is greater than the maximum distance from the top surface 1152 of the knob 1151 to the second housing surface 1122 in the direction perpendicular to the preset plane P3, so that the user can hold the auxiliary grip 134 to keep the body stable, and can lift the auxiliary grip 134 and the knob 1151 with enough clearance therebetween to complete the cutting operation.

Further, when the auxiliary handle 130 is in the middle position of the handle, the length of the gripping bottom surface 1346 to the central surface 1123 along the direction perpendicular to the preset plane P3 ranges from 28 mm to 70 mm, which can not make the hand of the user contact the knob 1151 when the auxiliary gripping portion 134 is gripped, and can also improve the user experience.

Referring to fig. 2, 6, 18 and 19, the auxiliary holding portion 134 further includes a third holding side 1343 opposite to the first holding side 1341, a fourth holding side 1344 opposite to the second holding side 1342, and a holding top surface 1345 connecting the first holding side 1341, the second holding side 1342, the third holding side 1343 and the fourth holding side 1344, wherein the holding top surface 1345 is opposite to the holding bottom surface 1346, and the extending end is at least partially connected to the holding top surface 1345. When the auxiliary handle 130 is at the middle position of the handle, the first gripping side 1341, the second gripping side 1342, the third gripping side 1343 and the fourth gripping side 1344 are substantially perpendicular to the preset plane P3, and the gripping top 1345 is substantially arc-shaped, so that the hand-held band saw 100 can be well attached to the palm of the user when being used by the user, and the experience of the user is improved. It should be understood that, in other embodiments, the top and bottom surfaces 1345 and 1346 of the auxiliary gripping portion 134 are planar, or in other embodiments, the top and bottom surfaces 1345 and 1346 may be non-planar, such as concave, for example, the bottom surface 1346 may be configured to facilitate the user's grip, and the top surface 1345 may be convex for facilitating the palm rest of the user. By the above design, the auxiliary grip 134 may be hexahedral to facilitate processing. The auxiliary gripping portion 134 is hexahedral in the present embodiment, but the auxiliary gripping portion 134 may be other shapes.

The four sides of gripping are joined the department and are circular arc angle, can improve user's comfort level when gripping, are equipped with the rubber anti-skidding layer on the top surface 1345 of gripping of supplementary portion 134, and the setting of rubber anti-skidding layer is more favorable to improving user's operation in cutting operation and feels, when the condition that user's operation gloves do not have the rubber layer appears, the condition that the rubber anti-skidding layer of top surface 1345 can effectively avoid user's hand slippage appears.

Referring to fig. 1, the actuating device 220 is used for driving the motor, and the actuating device 220 is disposed adjacent to the handle operation portion 126. Specifically, the starting device 220 includes a switch assembly 221, a first pressing member 222 and a second pressing member 223, where the switch assembly 221 is coupled to the motor and is used for controlling whether the motor is started or not. The first pressing piece 222 is used to control the switch assembly 221, and the second pressing piece 223 is used to control the switch assembly 221. That is, the first pressing piece 222 and the second pressing piece 223 can control the switch assembly 221, respectively, to start the motor. The first pressing member 222 is movably connected with the handle 120, the first pressing member 222 has at least a first starting position for starting the motor and a first stopping position for stopping the motor during the moving process, the second pressing member 223 is movably connected with the handle 120, and the second pressing member 223 has at least a second starting position for starting the motor and a second stopping position for stopping the motor during the moving process, i.e. the motor can be started by either the first pressing member 222 or the second pressing member 223, and of course, the motor can also be started by operating the first pressing member 222 and the second pressing member 223 simultaneously. The first starting position and the first stopping position are respectively the first pressing piece 222 driving the switch assembly 221, the motor is started and stopped, the second starting position and the second stopping position are respectively the second pressing piece 223 driving the switch assembly 221, the motor is started and stopped, the first pressing piece 222 and the second pressing piece can be driven in a contact mode or in a non-contact mode, when the hand-held band saw 100 is used by a user, the user can operate the first pressing piece 222 and/or the second pressing piece 223 by one hand, and therefore the operation of the user is facilitated

Referring to fig. 20, the handle 120 is formed with a receiving cavity 121, and specifically, the receiving cavity 121 is formed by assembling a left half shell 122 and a right half shell 123. The switch assembly 221 is disposed in the accommodating cavity 121, the first pressing member 222 is at least partially disposed in the accommodating cavity 121, and the first pressing member 222 is connected to the handle 120, the first pressing member 222 rotates around the first axis 124 relative to the handle 120, specifically, one end of the first pressing member 222 is clamped on the left half shell 122, and the other end is free to move. Meanwhile, the second pressing piece 223 is also at least partially disposed in the accommodating cavity 121, and the second pressing piece 223 is connected to the handle 120, and the second pressing piece 223 rotates around the second axis 125 relative to the handle 120, specifically, one end of the second pressing piece 223 is clamped on the left half shell 122, and the other end of the second pressing piece 223 is free to move. The present invention is not limited to the specific connection of one end of the first pressing piece 222 and one end of the second pressing piece 223 to the right half-shell 123 or the left half-shell 122, and will not be described in detail herein. Wherein the position connected to one end of the first pressing piece 222 is referred to as a first connection point 2221, and connected to one end of the second pressing piece 223

Referring to fig. 2, the first pressing member 222 rotates from the first stop position (shown in fig. 2) to the first start position (shown in fig. 1), and drives the second pressing member 223 from the second stop position (shown in fig. 2) to the second start position (shown in fig. 1). When the user operates the hand-held band saw 100 to cut a workpiece, and in particular, the user operates the first presser 222, the first presser 222 drives the second presser 223 toward the switch assembly 221, causing the second presser 223 to assume a second activated position to activate the machine. Alternatively, when the user operates the second pressing member 223, the second pressing member 223 approaches the switch assembly 221 such that the second pressing member 223 is in the second activated position, and the first pressing member 222 is still in the first deactivated position. Alternatively, the second pressing member 223 rotates from the second stop position to the second start position, and moves the first pressing member 222 from the first stop position to the first start position. Specifically, when the user operates the second pressing member 223, the second pressing member 223 approaches to the switch assembly 221, and drives the first pressing member 222 to move from the first stopping position to the first starting position, so that the user can start the motor no matter whether the user operates the first pressing member 222 or the second pressing member 223, and by setting the first pressing member 222 and the second pressing member 223, the user can select a proper handheld operation position according to the position of the workpiece to be cut, particularly when the workpiece to be cut is in a relatively difficult-to-operate position, the two pressing members provide more choices for the user, and the operation hand feeling of the user is greatly improved.

Referring to fig. 4 and 21, the longest distance between the first pressing piece 222 and the first axis 124 is substantially equal to the longest distance between the second pressing piece 223 and the second axis 125, and the first axis 124 is substantially parallel to the second axis 125. Specifically, the first axis 124 and the second axis 125 are substantially perpendicular to the handle bisecting plane P1, wherein a projected distance of the first pressing piece 222 to the first connecting point 2221 on the handle bisecting plane P1 is substantially equal to a projected distance of the second pressing piece 223 to the second connecting point 2231 on the handle bisecting plane P1, and a moment when the first pressing piece 222 and the second pressing piece 223 are pressed is substantially the same. Wherein the first axis 124 and the second axis 125 are perpendicular to the handle mid-plane P1, respectively.

The hand band saw 100 further includes a second elastic member having one end fixedly coupled to the handle 120 and the other end coupled to the first pressing member 222. The second elastic member is disposed in the accommodating chamber 121, and specifically, one end of the second elastic member is fixedly connected to the left housing, where it is not limited whether one end of the second elastic member is specifically disposed on the left housing or the right housing. The other end of the second elastic member is connected to the first pressing member 222, and the second elastic member may be a spring, where the first pressing member 222 moves together with the second pressing member 223 under the action of the pre-tightening force of the spring when the user presses the second pressing member 223, and returns to the second stop position under the action of the switch assembly 221 when the user removes the pressing force on the second pressing member 223, and the second pressing member 223 drives the first pressing member 222 to return to the first stop position. The design structure is simple and convenient to process.

Referring to fig. 22, the first pressing member 222 has a protrusion 2222, the second pressing member 223 has a recess 2232, and the protrusion 2222 cooperates with the recess 2232 to enable the second pressing member 223 to push the first pressing member 222 to rotate. Specifically, the user presses the first pressing piece 222, and the boss 2222 approaches the recess 2232 and pushes the second pressing piece 223 to approach the switch assembly 221, thereby starting the motor. When the user removes the pressing force to the first pressing piece 222, the second pressing piece 223 returns to the second stop position by the switch assembly 221, and the groove 2232 of the second pressing piece 223 pushes the boss 2222, so that the first pressing piece 222 returns to the first stop position.

The longest projection distance of the boss 2222 of the first pressing piece 222 to the first axis 124 in the direction perpendicular to the first axis 124 is substantially equal to the longest projection distance of the recess 2232 of the second pressing piece 223 to the second axis 125 in the direction perpendicular to the second axis 125. I.e., the projection distance of the boss 2222 to the first axis 124 on the handle bisecting plane P1 is substantially equal to the projection distance of the recess 2232 to the second axis 125 on the handle bisecting plane P1. The benefit of the above design is that the reaction force of the switch assembly 221 against the first or second push piece 222, 223 is substantially uniform.

The first pressing piece 222 has a first pressing surface 2223, the second pressing piece 223 has a second pressing surface 2233, the first pressing surface 2223 is substantially arc-shaped, the second pressing surface 2233 is substantially arc-shaped, and the first pressing surface 2223 is adjacent to the second pressing surface 2233. Specifically, the user presses on the first pressing surface 2223 or the second pressing surface 2233 to drive the first pressing piece 222 or the second pressing piece 223. I.e. the first pressing member 222 and the second pressing member 223 are designed to overlap, the protrusion 2222 of the first pressing member 222 and the recess 2232 of the second pressing member 223 are the overlapping parts of the first pressing member 222 and the second pressing member 223, wherein the projection distance from the protrusion 2222 to the first pressing member 2221 on the handle split surface P1 is smaller than the projection distance from the first pressing member 222 to the first pressing member 2221 on the handle split surface P1, and the projection distance from the recess 2232 to the second pressing member 2231 on the handle split surface P1 is also smaller than the projection distance from the second pressing member 223 to the second pressing member 2231 on the handle split surface P1, i.e. when the user controls the switch assembly 221 by using the second pressing member 223, it can be understood that when a force acts on the second pressing member 223, the second pressing member 223 is extended, and the second pressing member 223 is made to rotate about the second axis 125, and the reaction force of the switch assembly 221 against the second pressing member 223 acts on the second pressing surface 3, the force acting on the second pressing member 223 is further extended by the second axis 223 than the projection distance between the second pressing member 223 and the second pressing member 223, i.e. by making the reaction force exerted on the second axis 223 is greater than the force exerted by the second pressing force arm 223. The same principle is also applied to the first pressing member 222, and the description thereof will not be repeated here.

Optionally, first pressing surface 2223 is substantially continuous with second pressing surface 2233. That is, the first pressing surface 2223 and the second pressing surface 2233 are substantially arc-shaped, that is, the user can start the motor by pressing the first pressing surface 2223 or the second pressing surface 2233, or can start the motor by pressing the overlapping position of the first pressing surface 2223 and the second pressing surface 2233, by the arrangement, the pressing area of the starting device 220 is increased, the user can select a proper holding angle according to his holding habit, the use safety of the hand-held band saw 100 is improved well, and the operation of the user is facilitated.

Optionally, the switch assembly 221 includes an actuating element 2211 for actuating the motor, the actuating element 2211 having an actuating portion 2212 cooperating with the second pressing member 223; the second pressing member 223 has a trigger surface 2234, wherein the trigger surface 2234 cooperates with the trigger portion 2212 when the second pressing member 223 moves from the second stop position to the second start position, such that the start element 2211 triggers the motor to start, and the trigger portion 2212 is disposed adjacent to the trigger surface 2234. Specifically, the user presses either the first pressing member 222 or the second pressing member 223, so that the trigger surface 2234 pushes the trigger portion 2212 to start the motor, and when the user removes the external force, the start element 2211 is restored, that is, the trigger portion 2212 pushes the trigger surface 2234 to return the second pressing member 223 to the second stop position.

As another optional embodiment, the starting device 220 may be disposed on an electric tool product such as an electric circular saw, a reciprocating saw, a multifunctional tool, an electric drill, an electric wood milling machine, and the like, which will not be described in detail.

The above description is merely of preferred embodiments of the present invention, and the scope of the present invention is not limited to the above embodiments, but all equivalent modifications or variations according to the present disclosure will be within the scope of the claims.

Claims

1. A hand-held band saw comprising:

the shell assembly comprises a first shell, a second shell and a third shell, wherein the second shell is arranged at intervals with the first shell, the third shell is connected with the first shell and the second shell, and a cutting area is formed among the first shell, the second shell and the third shell; the first rotating wheel is at least partially arranged on the first shell;

the second rotating wheel is at least partially arranged on the second shell;

the motor is arranged in the shell assembly and can drive one of the first rotating wheel and the second rotating wheel to rotate;

the saw blade is connected with the first rotating wheel and the second rotating wheel; and

The adjusting device is connected with the first shell and at least partially arranged in the cutting area;

wherein, the adjusting device includes:

the fixing piece is connected with the first shell;

the sliding piece is connected with the fixing piece in a sliding way;

the grid leaning piece is connected with the sliding piece;

the connecting component is used for connecting the sliding piece and the leaning grid piece, and when the sliding piece moves, the connecting component can enable the leaning grid piece to move to a second position along with the sliding piece in a retentive way;

when the grating element is in the second position, the grating element is configured to allow the grating element to move relative to the first housing through the buffer element, and the grating element is restored to the second position through the buffer element.

2. The hand-held band saw of claim 1, wherein:

the grid leaning piece can move between a first position and a second position relative to the fixed piece along a first sliding direction;

at least one intermediate position exists between the first position and the second position.

3. The hand-held band saw of claim 2, wherein:

the adjusting device further includes:

a control assembly mounted to the slider;

The control assembly is connected with the fixing piece and used for preventing the sliding piece from being separated from the fixing piece to slide freely.

4. A hand held band saw according to claim 3, wherein:

the fixing piece is provided with a plurality of clamping grooves;

the control assembly includes:

a control button for a user to actuate the slider to move between the first position and the second position in a direction parallel to the first sliding direction;

the stop piece is used for being clamped with the clamping groove, and when the sliding piece is positioned at the first position, the second position or the middle position, the stop piece is clamped with the clamping groove, so that the sliding piece is basically fixed relative to the fixing piece.

5. The hand-held band saw of claim 4, wherein:

the control assembly further comprises:

and the elastic piece is connected between the sliding piece and the control button and is used for resetting the control button.

6. The hand-held band saw of claim 5, wherein:

the control button and the stop piece are integrally formed.

7. A hand held band saw according to claim 3, wherein:

the gate member is forced to move to a third position at the intermediate position, and the connecting assembly is capable of generating a dampening force in a direction opposite to the direction of movement, the dampening force being capable of moving the gate member from the third position to the intermediate position.

8. The hand-held band saw of claim 7, wherein:

the connection assembly includes:

the buffer piece is arranged between the sliding piece and the leaning grid piece, is arranged along the direction parallel to the first sliding direction and is used for resetting the leaning grid piece.

9. The hand-held band saw of claim 8, wherein:

the connection assembly further includes:

the guide rod is arranged along the first sliding direction and is connected with the sliding piece;

the buffer piece is a spring which is sleeved on the guide rod.

10. The hand-held band saw of claim 9, wherein: the grid leaning piece is provided with a protrusion extending along the direction perpendicular to the first sliding direction;

one end of the guide rod is detachably connected with the sliding piece, and the other end of the guide rod is movably connected with the protrusion.