CN220178332U - Saw blade for reciprocating oscillating electric tool - Google Patents

Abstract

The utility model discloses a saw blade for a reciprocating swing type electric tool, which belongs to the technical field of electric tools and comprises a clamping part and a sawing part which are relatively fixed, wherein a containing groove with an opening at one side is arranged between the sawing part and the clamping part, a plurality of inner saw teeth are arranged on the sawing part towards the inner edge of the containing groove, and a plurality of outer saw teeth are arranged on the outer edge of the sawing part away from the containing groove. The inner saw teeth are used for cutting branches entering the containing groove, the outer saw teeth are used for cutting branches or weeds located outside the saw blade, and a user can select the inner saw teeth or the outer saw teeth for cutting according to specific conditions of the branches or the weeds to be cut.

Description

Saw blade for reciprocating oscillating electric tool

Technical Field

The utility model relates to the technical field of electric tools, in particular to a saw blade for a reciprocating swing type electric tool.

Background

With the development and improvement of the technology level, various electric tools are increasingly applied to production and daily use, and the working efficiency of people is greatly improved through the electric tools, so that the working intensity of people can be reduced. The swinging shovel in the prior art is a common reciprocating swinging type electric tool, and a motor in a machine shell can drive a tool bit connected with an output shaft to do high-frequency reciprocating motion. The swing shovel can realize multiple functions such as cutting, polishing, scraping shovel, thick contusion, polishing through changing the tool bit, can be fine satisfy user's diversified user demand. The saw blade that is applicable to the swing shovel now generally only sets up the sawtooth at the front side, and the user can only push forward the swing shovel when the cutting, especially when the saw blade was used for cutting the branch of eminence messenger user can only upwards remove the swing shovel from down, because the kerf of branch down, the branch that sags down can make the kerf narrow and lead to the saw blade to be blocked dead under the dead weight effect, and the user need hand break off the branch and just can take out the saw blade from the kerf, is unfavorable for guaranteeing cutting efficiency and user's use experience.

Disclosure of Invention

In order to solve the defects and shortcomings in the prior art, the utility model provides the saw blade for the reciprocating swing type electric tool, and the structure of the saw blade is reasonably improved, so that the saw blade can better meet the working requirements of the reciprocating swing type electric tool when the reciprocating swing type electric tool is used for cutting high branches.

In order to achieve the technical purpose, the saw blade for the reciprocating swing type electric tool comprises a clamping part and a sawing part which are relatively fixed, a containing groove with one side open is arranged between the sawing part and the clamping part, a plurality of inner saw teeth are arranged on the sawing part towards the inner edge of the containing groove, and a plurality of outer saw teeth are arranged on the outer edge of the sawing part away from the containing groove.

Preferably, the saw blade comprises a connecting part, one end of the connecting part is connected with the clamping part, the other end of the connecting part is connected with the sawing part, the containing groove is formed by encircling the clamping part, the connecting part and the sawing part, and the containing groove is open at one side far away from the connecting part.

Preferably, the clamping part, the sawing part and the connecting part are integrally formed.

Preferably, the saw cutting part is in a fan ring shape, the inner saw teeth are distributed along the arc direction of the arc inner edge of the saw cutting part, and the outer saw teeth are distributed along the arc direction of the arc direction outer edge of the saw cutting part.

Preferably, the clamping part is provided with a clamping groove, and the fan-shaped sawing part and the clamping groove are concentrically arranged.

Preferably, one end of the clamping groove is open, the other end of the clamping groove is closed, and the clamping part is provided with a plurality of limiting holes which are positioned at the periphery of the clamping groove and distributed at intervals along the circumferential direction of the clamping groove.

Preferably, the center angle of the fan ring of the sawing part is gamma, and gamma is more than or equal to 60 degrees and less than or equal to 120 degrees.

Preferably, the saw cutting part is in a straight line shape, the inner saw teeth are distributed along the straight line direction of the inner edge of the saw cutting part, and the outer saw teeth are distributed along the straight line direction of the outer edge of the saw cutting part.

Preferably, the width of the material containing groove is 30 mm-100 mm; and/or the sawing part is provided with a guiding bevel edge at a position facing the open side of the containing groove, so as to enlarge the width of the open side of the containing groove.

Preferably, the inner saw teeth are trapezoidal teeth, and at least one waist edge of the inner saw teeth is provided with an inner tooth edge; and/or the outer saw teeth are arc-shaped teeth and are provided with arc-shaped outer tooth edges.

After the technical scheme is adopted, the utility model has the following advantages:

1. the saw blade provided by the utility model is suitable for a reciprocating swing type electric tool, and can be fixed through the clamping part, so that the saw blade can do high-frequency reciprocating swing during working. The saw bit sets up holds the silo, and saw cut the inner edge of portion and set up interior sawtooth, saw cut the outer fringe of portion and set up outer sawtooth, interior sawtooth can be used for cutting the branch that gets into holding the silo, and outer sawtooth can be used for cutting branch or the weeds that are located the saw bit outside, and the user can select interior sawtooth or outer sawtooth to cut according to the branch or the weeds specific condition that wait to cut. When adopting interior sawtooth to cut, the user can pull back electric tool makes interior sawtooth backward move for the branch of being cut, especially when the saw bit is used for cutting the thicker branch in eminence, and the saw bit can be from upwards down for the branch, because the kerf of branch up, the kerf can be made to the branch of sagging under the dead weight effect widen, avoids the kerf to narrow down and leads to the saw bit to be blocked the dead condition, is favorable to improving cutting efficiency to be favorable to improving user's use experience. In addition, because the saw blade is driven to do high-frequency reciprocating swing, the movement range of the saw blade is smaller, so that a user can conveniently adjust the direction of the saw blade according to the working condition and the environmental condition when in use, and the saw blade can effectively cut branches or weeds in a smaller operation space.

2. The holding groove is formed by enclosing the clamping part, the connecting part and the sawing part, and the composition structure of the saw blade is reasonably arranged, so that the holding groove for the branches to be cut to enter can be smoothly formed between the sawing part and the clamping part, and the structural strength of the saw blade is also guaranteed. The clamping part, the sawing part and the connecting part are preferably integrally formed, so that the saw blade is not required to be assembled while the structural strength of the saw blade is further improved, and the production efficiency of the saw blade is improved.

3. The saw cutting part is preferably arranged into a fan ring shape, the inner saw teeth and the outer saw teeth are distributed along the arc directions of the inner edge and the outer edge in the saw cutting part respectively, the specific shape of the saw cutting part and the distribution patterns of the inner saw teeth and the outer saw teeth are reasonably arranged, and the effective saw cutting length of the inner saw teeth and the outer saw teeth when cutting branches or weeds can be reasonably increased, so that the saw cutting efficiency is improved.

4. The circular sawing part is preferably arranged concentrically with the clamping groove of the clamping part, the position distribution relation between the sawing part and the clamping part is reasonably arranged, the motion stability of the sawing part during reciprocating swing can be improved, and the stress balance of the sawing part during cutting branches or weeds can be improved.

5. One end of the clamping groove is open, and the other end of the clamping groove is closed, so that the saw blade can be conveniently and rapidly fixed at the output end of the reciprocating swing type electric tool. The periphery of the clamping groove is provided with a plurality of spacing holes which are distributed at intervals, and the saw blade fixed at the output end of the reciprocating swing type electric tool is circumferentially limited through the spacing holes, so that the saw blade can smoothly perform reciprocating swing motion under the drive, and the saw blade can cut branches in a reciprocating manner.

6. The central angle of the fan-shaped annular sawing part is reasonably arranged, so that the arc direction distribution span of the inner saw teeth and the outer saw teeth is reasonably arranged, and the saw blade meets the requirement of reciprocating swing cutting branches or weeds. If gamma is less than 60 degrees, the arc span of the sawing part is smaller, the arc distribution span of the inner and outer saw teeth is smaller, and the inner and outer saw teeth can not effectively cut branches or weeds when the saw blade swings reciprocally, so that the cutting efficiency is not improved. If gamma is larger than 120 degrees, although the arc direction distribution span of the inner saw teeth and the outer saw teeth can be increased, the saw teeth at the two ends cannot play an effective sawing role because the saw blades are small in reciprocating swing amplitude and are seldom contacted with the branches to be cut, and in addition, the saw teeth at the two ends are easy to cause the sawing parts to receive torsion moment when cutting the branches or weeds because the arc direction span of the sawing parts is large, so that the cutting stability of the sawing parts is not guaranteed.

7. The saw cutting part can also be arranged in a linear shape, at the moment, the inner saw teeth are distributed along the linear direction of the inner edge of the saw cutting part, the outer saw teeth are distributed along the linear direction of the outer edge of the saw cutting part, and the specific shape of the saw cutting part and the distribution patterns of the inner saw teeth and the outer saw teeth are reasonably arranged, so that the inner teeth and the outer teeth of the saw cutting part can meet the requirements of cutting branches or weeds.

8. The groove width of the containing groove is reasonably arranged, so that the thickness of branches which can be cut by inner sawteeth is reasonably limited, and the structural stability of the saw blade is ensured while the cutting requirement is met. If the width of the containing groove is smaller than 30mm, the containing groove is narrower, and branches which can be cut by inner sawteeth are thinner, so that the cutting requirements of users are not met. If the groove width of the containing groove is larger than 100mm, the containing groove is wider, the distance between the sawing part and the clamping part is larger, and the sawing part is easy to deform due to stress when cutting branches, so that the structural stability of the saw blade is not guaranteed, and the functional stability of the saw blade is not guaranteed.

9. The shapes of the inner saw teeth and the outer saw teeth are reasonably arranged according to the stress characteristics of the inner saw teeth and the outer saw teeth, so that the inner saw teeth and the outer saw teeth better meet the cutting requirements of branches with different thicknesses.

Drawings

FIG. 1 is a block diagram of a saw blade in accordance with a first embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a diagram of the whole machine of a reciprocating swing type electric tool according to an embodiment;

FIG. 4 is a partial block diagram of a reciprocating swing type power tool according to an embodiment;

FIG. 5 is a partial block diagram of a working assembly of a reciprocating swing type power tool according to an embodiment;

FIG. 6 is an exploded view of a portion of the construction of a working assembly of a reciprocating oscillating power tool according to an embodiment;

FIG. 7 is an axial cross-sectional view showing a portion of the construction of a working assembly in a reciprocating oscillating power tool according to an embodiment;

FIG. 8 is a diagram showing the configuration of the cooperation of a motor and a rotary member in a reciprocating swing type electric tool according to an embodiment;

FIG. 9 is a diagram showing the cooperation of the motor, the rotary member and the fork in a reciprocating swing type electric tool according to an embodiment;

FIG. 10 is a schematic side view of a reciprocating swing type power tool according to an embodiment;

FIG. 11 is a schematic view showing a partial structure of a four-stroke oscillating electric tool according to an embodiment;

FIG. 12 is a schematic view showing the cooperation of the working assembly and the housing of the machine body in the four-stroke oscillating electric tool according to the embodiment;

FIG. 13 is a schematic view showing the cooperation of a working assembly and a handle assembly in a four-stroke oscillating power tool according to an embodiment;

in the figure, 100-working components, 110-motors, 121-inner shafts, 122-outer shafts, 123-upper chucks, 124-lower chucks, 125-bearings, 126-springs, 127-limit pins, 128-shaft covers, 129-unlocking members, 130-handpiece housings, 141-rotating shafts, 142-rotating members, 143-shifting forks, 143 a-socket parts, 143 b-fork arms, 200-long rods, 210-rod bodies, 220-adjusting sleeves, 230-fixed seats, 300-handle components, 310-handles, 320-battery packs, 400-fuselage housings, 500-saw blades, 510-clamping parts, 511-clamping grooves, 512-limit holes, 520-sawing parts, 521-inner sawteeth, 521 a-inner tooth edges, 522-outer sawteeth, 522 a-outer tooth edges, 523-guide oblique edges, 530-Rong Liaocao, 540-connecting parts, 550-cutting edges.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples. It is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, as used herein, are merely based on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices/elements referred to must have or be configured and operated in a particular orientation and therefore should not be construed as limiting the utility model.

Example 1

Referring to fig. 1 and 2, a saw blade 500 for a reciprocating swing type electric tool according to a first embodiment of the present utility model includes a clamping portion 510 and a sawing portion 520 which are relatively fixed, a receiving groove 530 with an opening at one side is disposed between the sawing portion 520 and the clamping portion 510, a plurality of inner saw teeth 521 are disposed on the inner edge of the sawing portion 520 facing to the Rong Liaocao, and a plurality of outer saw teeth 522 are disposed on the outer edge of the sawing portion 520 facing away from the receiving groove 530.

When the inner saw teeth 521 are adopted for cutting, a user can pull the electric tool backwards to enable the inner saw teeth 521 to move backwards relative to the cut branches, especially when the saw blade 500 is used for cutting branches with thicker heights, the saw blade 500 can move downwards relative to the branches, due to the fact that the saw openings of the branches face upwards, the saw openings can be widened due to the fact that the branches drooping under the action of dead weight can be avoided, the situation that the saw openings are narrowed due to the fact that the branches drooping are clamped is avoided, cutting efficiency is improved, and therefore user experience is improved.

In this embodiment, the saw blade 500 further includes a connecting portion 540, one end of which is connected to the clamping portion 510, and the other end of which is connected to the sawing portion 520, and the Rong Liaocao is formed by enclosing the clamping portion 510, the connecting portion 540 and the sawing portion 520, and the material containing groove 530 is open at a side far away from the connecting portion 540. Preferably, the clamping portion 510, the sawing portion 520 and the connecting portion 540 are integrally formed and aligned, i.e. the clamping portion 510, the sawing portion 520 and the connecting portion 540 are located in the same plane, and the saw blade 500 is in a sheet shape. A straight line M in fig. 1 represents an approximate dividing line between the clamping portion 510 and the connecting portion 540, and a straight line N represents an approximate dividing line between the connecting portion 540 and the sawing portion 520. It should be understood that the straight lines M and N are only used to illustrate that the saw blade 500 has different portions, and are not necessarily used as strict boundary lines between the clamping portion 510, the connecting portion 540 and the sawing portion 520, and other boundary lines may be used to represent the distribution positional relationship among the three.

In this embodiment, the clamping portion 510 is provided with a clamping groove 511 and a limiting hole 512, the clamping groove 511 is approximately U-shaped and has an open rear end, and the limiting hole 512 is provided at the periphery of the clamping groove 511 and is provided with a plurality of limiting holes along the circumferential direction of the clamping groove 511.

In this embodiment, the saw cutting portion 520 has a fan-like shape, the inner saw teeth 521 are distributed along the arc direction of the arc inner edge of the saw cutting portion 520, and the outer saw teeth 522 are distributed along the arc direction of the saw cutting portion 520 toward the outer edge. Preferably, the fanned annular saw cut 520 is disposed concentric with the clamping groove 511. Point E in fig. 1 is the center point of clamping groove 511 and is also the center point of fanned annular saw cut 520. The center angle of the fan ring of the sawing part 520 is gamma which is more than or equal to 60 degrees and less than or equal to 120 degrees. In this embodiment, γ is preferably set to 90 °. It is understood that the fan ring center angle γ of the saw cutting portion 520 may be set to be 60 °, 65 °, 70 °, 75 °, 80 °, 85 °, 89 °, 91 °, 95 °,100 °, 105 °,110 °, 115 °, 120 °, or other reasonable sizes. Of course, the center point of the fanning ring saw cut 520 may also be slightly offset with respect to the center point of the clamping groove 511.

In order to enable the inner saw teeth 521 to effectively cut branches, the groove width W of the containing groove 530 is required to be reasonably set, and W is more than or equal to 30mm and less than or equal to 100mm. In this embodiment, the radius of the inner edge of the sawing portion 520 is about 70mm, the radius of the outer edge of the sawing portion 520 is about 90mm, and the width of the receiving groove 530 is reduced from the open side toward the side of the connecting portion 540, and the width of the receiving groove 530 at the open side is about 55mm. It will be appreciated that the width of the open side of the receiving slot 530 may be set to other reasonable dimensions such as 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc., and the radius of the inner and outer edges of the saw cut 520 may be set to other reasonable dimensions.

In order to facilitate the branches to be cut to enter the containing groove 530, the sawing part 520 is provided with a guide bevel 523 at a position facing the open side of the containing groove 530, and an avoidance part is formed by the guide bevel 523, so that the width of the open side of the containing groove 530 can be properly enlarged, in addition, the guide bevel 523 has a certain guiding function on the branches entering the containing groove 530, and the branches can be easier to enter the containing groove 530.

Referring to fig. 2, in the present embodiment, the inner saw teeth 521 are trapezoidal teeth, at least one waist edge of the inner saw teeth 521 is provided with an inner tooth edge 521a, and the outer saw teeth 522 are arc-shaped teeth and are provided with arc-shaped outer tooth edges 522a. Preferably, the inner tooth edges 521a of two adjacent inner teeth 521 are provided at the waist edges of different sides, so that the inner teeth 521 can cut branches when the saw blade 500 swings reciprocally. Referring to fig. 1, in order to improve the cutting effect, an arc-shaped cutting edge 550 is provided at the inner edge of the junction between the sawing part 520 and the connecting part 540. It will be appreciated that the inner teeth 521 and the outer teeth 522 may be provided in other tooth shapes to meet the cutting requirements of the tree branch, and that the cutting edge 550 may be omitted.

With reference to fig. 3 to 10, the present embodiment further provides a reciprocating swing type electric tool, including a working assembly 100 having a motor 110, wherein the working assembly 100 includes the saw blade 500 described above, and the saw blade 500 is driven by the motor 110 and reciprocates in a working plane. In this embodiment, the reciprocating swing type electric tool further includes a long rod 200 and a handle assembly 300, wherein the working assembly 100 is disposed at the front end of the long rod 200, and the handle assembly 300 is disposed at the rear end of the long rod 200.

Referring to fig. 4 and 5, in this embodiment, the working assembly 100 further includes a handpiece housing 130, a clamping structure for clamping or unclamping the working head, and a transmission structure for transmitting power, where the motor 110 drives the working head to reciprocate in a working plane through the transmission structure and the clamping structure, the motor 110, the clamping structure and the transmission structure are disposed inside the handpiece housing 130, and the working head is disposed outside the handpiece housing 130.

Referring to fig. 6 and 7, the clamping structure includes an inner shaft 121 and an outer shaft 122 that are sleeved together, the inner shaft 121 is disposed to move back and forth axially relative to the outer shaft 122, an upper chuck 123 is disposed at the bottom end of the outer shaft 122, a lower chuck 124 disposed at the bottom of the upper chuck 123 is disposed at the bottom end of the inner shaft 121, and the upper chuck 123 and the lower chuck 124 cooperate to clamp or unclamp the working head. In this embodiment, the outer shaft 122 is rotatably disposed in the handpiece housing 130 through two bearings 125 disposed in parallel up and down, the upper chuck 123 and the lower chuck 124 are disposed outside the handpiece housing 130, and the upper chuck 123 is provided with a plurality of limiting pins 127 circumferentially spaced apart.

In order to enable the lower jaw 124 to cooperate with the upper jaw 123 to clamp the working head, the clamping arrangement further comprises resilient members acting on the inner shaft 121 to bring the inner shaft 121 into a clamping position in which the lower jaw 124 cooperates with the upper jaw 123 to clamp the working head. In this embodiment, the elastic member is a spring 126 sleeved outside the inner shaft 121, and the spring 126 is in a compressed state, one end of the spring is positioned and arranged, and the other end of the spring abuts against the inner shaft 121. Specifically, the top end of the inner shaft 121 is sleeved with the shaft cover 128, the top end of the spring 126 abuts against the shaft cover 128 to abut against the inner shaft 121, and the bottom end of the spring 126 abuts against the step surface to achieve positioning. The spring 126 applies an upward force to the inner shaft 121, causing the inner shaft 121 to normally assume a clamping position in which the lower collet 124 cooperates with the upper collet 123 to clamp the working head. It will be appreciated that other resilient members that can place the inner shaft 121 in the clamped position and return the inner shaft 121 to the clamped position can be used.

To facilitate user replacement of the working head, the working assembly 100 further includes an unlocking member 129, the unlocking member 129 acting on the inner shaft 121, the unlocking member 129 being operable to urge the inner shaft 121 downwardly to an unlocked position in which the lower collet 124 is disengaged from the upper collet 123. In this embodiment, the unlocking member 129 is rotatably disposed at the top of the handpiece housing 130, and when the unlocking member 129 rotates upward, the bottom side of the unlocking member 129 abuts against the inner shaft 121 to move the inner shaft 121 downward against the elastic force of the spring 126, the downward moving inner shaft 121 drives the lower collet 124 to move downward synchronously and compress the spring 126 under further force, and the lower collet 124 is far away from the upper collet 123, so that the upper collet 123 and the lower collet 124 release the working head, and the working head can be removed and replaced. After replacement, the unlocking member 129 is rotated downwards, so that the unlocking member 129 releases the inner shaft 121, and the spring 126 which restores the deformation can drive the inner shaft 121 and the lower chuck 124 to move upwards for resetting, so that the lower chuck 124 and the upper chuck 123 clamp the working head again.

Referring to fig. 8 and 9, the transmission structure includes a rotating shaft 141 driven by the motor 110, a rotating member 142 eccentrically sleeved on the rotating shaft 141, and a shifting fork 143 sleeved on the outer shaft 122 and matched with the rotating member 142, wherein the rotating shaft 141 is perpendicular to the outer shaft 122, and the eccentrically rotating member 142 drives the clamping structure to swing reciprocally through the shifting fork 143. In this embodiment, the rotating shaft 141 is rotatably disposed at the front end of the motor 110 through a bearing, the rear end of the rotating shaft 141 is directly connected with the motor shaft of the motor 110 in a transmission manner, the front end of the rotating shaft 141 is eccentrically disposed with respect to the rear end, the rotating member 142 is sleeved at the front end of the rotating shaft 141, and the rotating member 142 is eccentrically disposed with respect to the motor shaft, i.e. the central axis of the rotating member 142 is not coincident with the central axis of the motor shaft. Referring to fig. 9, the fork 143 includes an integrally formed coupling portion 143a and a fork arm 143b, the coupling portion 143a is sleeved outside the outer shaft 122, the coupling portion 143a and the outer shaft 122 are circumferentially limited, the fork arm 143b is symmetrically arranged in a left-right direction, and the rotating member 142 is arranged between the two fork arms 143b and contacts the fork arm 143 b. It is understood that the rotating member 142 may be a bearing, a roller fixedly sleeved on the front end of the rotating shaft 141, or the like.

The motor 110 drives the rotating member 142 to eccentrically rotate through the rotating shaft 141, and the eccentrically rotating member 142 drives the clamping structure to reciprocally swing left and right through the shifting fork 143, and the clamping structure drives the saw blade to reciprocally swing in a left plane and a right plane. Because the rotating shaft 141 is directly connected with the motor shaft of the motor 110 in a transmission way, the rotating speed of the rotating shaft 141 is higher, and correspondingly, the swinging frequency of the working head is also higher, which is beneficial to improving the working efficiency. Referring to fig. 4, in this embodiment, the swing angle range λ of the working head is 3 ° to 10 °. Specifically, the swing angle range λ of the working head in this embodiment refers to the maximum swing angle of the front-rear direction center line of the saw blade in the left-right direction, and the swing angle range λ is about 8 °. It will be appreciated that the swing angle range λ may be set to other reasonable magnitudes of 3 °,4 °,5 °,6 °, 7 °, 9 °,10 °, etc.

Referring to fig. 10, the handle assembly 300 includes a handle 310 and a battery pack 320, the handle 310 being fixed to the rear end of the rod body 210, and the battery pack 320 being detachably connected to the rear end of the handle 310. In this embodiment, the voltage of the battery pack 320 is 12V, and the shape of the battery pack 320 is preferably consistent with the shape of the handle 310, i.e., the height of the battery pack 320 is consistent with the height of the handle 310. It will be appreciated that the battery pack 320 may be attached to the top or bottom of the handle 310 at other suitable locations, and that the battery pack 320 may be configured to be larger than the handle 310 when the voltage of the battery pack 320 is high, i.e., the height of the battery pack 320 may be greater than the height of the handle 310.

In order to facilitate the user to adjust the specific length of the long rod 200, in this embodiment, the long rod 200 is preferably a telescopic rod, and the two adjacent rod bodies 210 of the long rod 200 are movably connected through the adjusting sleeve 220, and the specific structure of the adjusting sleeve 220 can refer to the prior art, which is not described herein. It will be appreciated that the rod body 210 of the long rod 200 may be telescopically connected by an existing spring plate structure, and of course, the long rod 200 may also be a single rod structure with a fixed length.

Referring to fig. 3 and 10, the front-rear direction is defined as the longitudinal direction, the left-right direction is defined as the width direction, and the up-down direction is defined as the height direction. To improve stability when a user operates the power tool, the saw blade 500, which is clamped by the clamping structure, is located within a height range of the handle assembly 300 in a height direction. The offset distance of the saw blade 500 relative to the height center line of the handle assembly 300 is reasonably reduced, and the moment action generated by the acting force applied to the handle assembly 300 when the saw blade 500 works can be reasonably reduced, so that the acting force required by a user to stably hold the electric tool through the handle assembly 300 when the electric tool is used can be reduced, the purpose of saving labor in use is achieved, the stability of the user for operating the electric tool can be improved, and the use experience of the user is improved. Preferably, the saw blade 500 is located within a height range of the handle 310 in a height direction. It will be appreciated that when the height of the battery pack 320 is consistent with the height of the handle 310, the saw blade 500 is located within the height range of the handle assembly 300; when the height of the battery pack 320 is greater than the height of the handle 310, the saw blade 500 is located within the height range of the handle 310. In addition, when the working head adopts other tool bits, if the working head is aligned front and back, the whole working head is positioned in the height range of the handle 310; if the working position at the front end of the working head and the clamping position at the rear end are staggered in the height direction, the working position at the front end of the working head is located in the height range of the handle 310.

In order to facilitate the user to hold the electric tool stably through the handle 310, the height H of the handle 310 is required to be set reasonably, and H is more than or equal to 30mm and less than or equal to 60mm. In this embodiment, the height H of the handle 310 is about 48mm. It is understood that the height H of the handle 310 may be set to other reasonable sizes such as 30mm, 35mm, 40mm, 42mm, 44mm, 46mm, 47mm, 49mm, 50mm, 52mm, 54mm, 56mm, 58mm, 60mm, etc., and the cross-sectional shape of the handle 310 in the left-right direction may be set to a reasonable shape such as a circular shape, an oblate shape, a rounded rectangle, a rounded square, etc.

In order to facilitate the user to adjust the specific length of the long rod 200, in this embodiment, the long rod 200 is preferably a telescopic rod, and the two adjacent rod bodies 210 of the long rod 200 are movably connected through the adjusting sleeve 220, and the specific structure of the adjusting sleeve 220 can refer to the prior art, which is not described herein. It will be appreciated that the rod body 210 of the long rod 200 may be telescopically connected by an existing spring plate structure, and of course, the long rod 200 may also be a single rod structure with a fixed length.

When branches or weeds need to be cut, when the saw blade 500 is clamped on the machine body, the clamping part 510 moves forwards and backwards, the inner shaft 121 is clamped in the clamping groove 511, the limiting holes 512 correspond to the limiting pins 127, the reset inner shaft 121 drives the lower clamping head 124 to move upwards and clamp the clamping part 510 in a matched mode with the upper clamping head 123, and the limiting pins 127 are inserted into the corresponding limiting holes 512. Since the saw blade 500 is in a flat sheet shape, the saw blade 500 as a whole is located within the height range of the handle 310 after assembly.

In operation, the motor 110 may drive the saw blade 500 to reciprocate left and right at high frequencies in the working plane via a transmission structure and a clamping structure. When the branches to be cut are thicker, the moving machine body enables the branches to enter the containing groove 530 and then cut by the inner saw teeth 521, when the user cuts, the machine body can be pulled down to enable the saw blade 500 to move downwards relative to the branches, and due to the fact that the saw cuts of the branches face upwards, the saw cuts can be widened due to the fact that the branches drooping under the action of dead weight can be widened, and the situation that the saw blades 500 are blocked due to the fact that the saw cuts are narrowed due to the fact that the branches drooping is avoided. When the branches to be cut are thin, or when weeds are cut, the machine body is moved and the outer saw teeth 522 are used for cutting the roots of the branches, and the branches or the weeds cannot block the saw blade 500 due to the fact that the weight of the branches or the weeds is light.

Example two

In this embodiment, the saw cutting portion 520 is linear, the inner saw teeth 521 are distributed along the linear direction of the inner edge of the saw cutting portion 520, and the outer saw teeth 522 are distributed along the linear direction of the outer edge of the saw cutting portion 520.

Other structures of the second embodiment are the same as those of the first embodiment, and will not be described in detail here.

Example III

In this embodiment, the inner saw teeth 521 and the outer saw teeth 522 are formed separately on the sawing portion 620, the inner toothed bar with the inner saw teeth 521 is fixed at the inner edge of the sawing portion 520 facing the receiving groove 530, and the outer toothed bar with the outer saw teeth 522 is fixed at the outer edge of the sawing portion 520 facing away from the Rong Liaocao side. Because the inner saw teeth and the outer saw teeth are additionally formed, the inner saw teeth and the outer saw teeth can be made of materials with higher strength, so that the cutting effect of the saw blade is improved, and the production cost of the saw blade is reasonably reduced.

It is appreciated that the inner rack with inner serrations 521 and the outer rack with outer serrations 522 may be secured to the saw cut 520 by welding, fasteners, or the like.

Other structures of the third embodiment are the same as those of the first embodiment, and will not be described in detail here.

It will be appreciated that the third embodiment may be combined with the second embodiment.

Example IV

Referring to fig. 11, in this embodiment, a fixing base 230 is disposed at the front end of the long rod 200, and the handpiece housing 130 is detachably matched with the fixing base 230. Referring to fig. 12, the reciprocating swing type electric tool of the present embodiment further includes a body housing 400, the body housing 400 is formed with a handle portion, and the head housing 130 is detachably coupled with the body housing 400.

When the working assembly 100 is assembled to the fixing base 230, the reciprocating swing type electric tool is used as a long handle tool, and the working range is wide. When the working assembly 100 is separated from the fixing base 230 and is additionally connected with the body housing 400, the reciprocating swing type electric tool formed by the working assembly 100 and the body housing 400 can be used as a short handle tool.

It can be appreciated that the detachable fixed fit between the handpiece housing 130 and the fixed seat 230, and between the handpiece housing 130 and the body housing 400 can be realized by reasonable structures such as a buckle structure, a screw fit structure, a locking sleeve structure, etc.

Other structures of the fourth embodiment are the same as those of the first embodiment, and will not be described in detail here.

It will be appreciated that the fourth embodiment may be combined with the second and/or third embodiments.

Example five

Referring to fig. 13, in the fourth embodiment, the handle assembly 300 is detachably disposed at the rear end of the long rod 200 on the basis of the detachable cooperation between the handpiece housing 130 and the fixing base 230, that is, the handpiece housing 130 separated from the fixing base 230 can be directly fixed with the handle assembly 300 separated from the long rod 200 to be used as a short-handle tool.

It will be appreciated that the handpiece housing 130 and the handle assembly 300 may be detachably and fixedly coupled by a reasonable structure such as a snap-fit structure, a screw-fit structure, a locking sleeve structure, etc.

Other structures of the fifth embodiment are the same as those of the fourth embodiment, and will not be described in detail here.

It will be appreciated that embodiment five may be combined with embodiment two and/or embodiment three.

In addition to the above preferred embodiments, the present utility model has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the utility model, which shall fall within the scope of the utility model as defined in the appended claims.

Claims (10)

1. The saw blade for the reciprocating swing type electric tool comprises a clamping part and a sawing part which are relatively fixed, and is characterized in that a containing groove with one side open is arranged between the sawing part and the clamping part, a plurality of inner saw teeth are arranged on the sawing part towards the inner edge of the containing groove, and a plurality of outer saw teeth are arranged on the outer edge of the sawing part back to the containing groove.

2. The saw blade for a reciprocating oscillating power tool of claim 1, wherein the saw blade comprises a connecting portion having one end connected to the clamping portion and the other end connected to the sawing portion, and the receiving groove is formed by enclosing the clamping portion, the connecting portion and the sawing portion, and is open at a side away from the connecting portion.

3. The saw blade for a reciprocating swing electric tool according to claim 2, wherein the clamping portion, the sawing portion and the connecting portion are integrally formed.

4. The saw blade for a reciprocating oscillating power tool of claim 1, wherein the saw cutting portion has a fanned annular shape, the inner saw teeth being distributed along an arc of an arcuate inner edge of the saw cutting portion, and the outer saw teeth being distributed along an arc of the saw cutting portion toward an arcuate outer edge.

5. The saw blade for a reciprocating swing type electric tool according to claim 4, wherein the clamping portion is provided with a clamping groove, and the fanned annular sawing portion is disposed concentrically with the clamping groove.

6. The saw blade for a reciprocating oscillating power tool of claim 5, wherein the clamping groove is provided with a plurality of limiting holes which are arranged at the periphery of the clamping groove and are distributed at intervals along the circumferential direction of the clamping groove, one end of the clamping groove is open, and the other end of the clamping groove is closed.

7. The saw blade for a reciprocating oscillating power tool of claim 4, wherein the center angle of the fan ring of the saw cut is γ,60 ° or more γ or less 120 °.

8. The saw blade for a reciprocating swing type electric tool according to claim 1, wherein the saw cutting portion is in a straight line shape, the inner saw teeth are distributed along a straight line direction of an inner edge of the saw cutting portion, and the outer saw teeth are distributed along a straight line direction of an outer edge of the saw cutting portion.

9. The saw blade for a reciprocating swing type electric tool according to claim 1, wherein the groove width of the receiving groove is 30mm to 100mm; and/or the sawing part is provided with a guiding bevel edge at a position facing the open side of the containing groove, so as to enlarge the width of the open side of the containing groove.

10. The saw blade for a reciprocating oscillating power tool of claim 1, wherein said inner teeth are trapezoidal teeth and at least one waist edge thereof is provided with an inner tooth edge; and/or the outer saw teeth are arc-shaped teeth and are provided with arc-shaped outer tooth edges.