KR102670741B1 - Shifting Mechanism and Electric tool using it - Google Patents

Abstract

In one embodiment, the present invention includes a first axis, first and second parts located at different positions along the axial direction of the first axis, each having protrusions formed in directions facing each other, and freely rotating about the first axis. gear; a clutch having engaging members protruding between the first and second gears in the direction of the first and second gears, respectively; an adjustment member configured to move the clutch in the first gear direction or the second gear direction; a second axis disposed parallel to the first axis; Third and fourth gears are disposed in engagement with the first and second gears and rotate together with the second axis, and the adjustment member includes a knob; It includes a change block that operates in conjunction with the knob, wherein the change block includes a main body and a finger extending from the main body toward the clutch, and the main body includes a moving part that moves within the knob according to the movement of the knob. an internal space into which the moving part is inserted; a first elastic member supporting the moving part in the internal space on one side in the first direction; and a second elastic member supporting the moving part in the internal space on the other side of the first direction.

Description

Shifting mechanism of power equipment and electric tool including the same {Shifting Mechanism and Electric tool using it}

The present invention relates to a transmission structure of power equipment and a power tool including the same, and specifically to a transmission structure of a drilling machine and a drilling machine.

During the iron processing process, construction material processing, especially beam processing, or even after assembly, loading, and launching during the ship building process, a lot of drilling work is performed to construct various holes due to emergency reasons such as accounting or malfunction.

Although hole machining is being done a lot in various applications as mentioned above, since workers cannot directly carry and work with heavy drill devices, hole machining work is performed using a magnetic drill device that attaches a magnet to the bottom of the drill device and attracts it to the workpiece. I'm doing it.

Figure 1 shows a schematic diagram of a drilling machine. 1 is a schematic diagram of a magnetic drilling machine configured to perform drilling after fixing an object through an electromagnet among drilling machines.

Referring to Figure 1, the magnetic drill device (1) is composed of a drill part (10), a magnet part (20), and a support part that supports the drill part and the magnet part, and is capable of machining a hole at a specific position of a steel material to be processed. In this case, when the power switch of the magnet is turned on after aligning the hole cutter part (15) of the drill part with the hole machining position with the power of the magnet turned off, magnetic force is generated in the magnet, and the magnetic drill device is driven by the workpiece by the magnetic force. Hole processing is performed by maintaining the adsorbed state on the steel material.

In a magnetic drilling machine as shown in Figure 1, it is necessary to adjust the rotation ratio of the drill to the rotation of the motor. In the conventional case, the gear engaged with the rotation axis is changed using the adjuster. In this method, when changing gears using the adjuster, the gear is accurately rotated. Because it must be engaged, there is the inconvenience of having to engage the gear by rotating the drill part while the user is turning the control part.

Accordingly, a device has been developed that changes gears by turning the control unit and rotating the motor, as shown in Patent Document 1. However, in the case of Patent Document 1, there is a problem in that disassembly/assembly of the control unit is not easy due to the complex structure in which the elastic member is connected to the control unit.

In particular, parts such as gears must be replaced when damaged, and in most cases, non-expert users must replace the parts themselves, but in cases such as Patent Document 1, it is practically impossible for users to replace them. There is.

Accordingly, a transmission structure for power equipment such as Patent Document 2 has been developed. In the case of Patent Document 2, disassembly and assembly were easy, but when a helical gear, which is advantageous for power transmission, is applied, force is generated in the axial direction. Due to this force, the spring placed on the power shaft elastically deforms, generating noise. There is a problem with the gear moving toward the spring during processing.

(Patent Document 1) US9434038 B

(Patent Document 2) KR10-2072605 B

The present invention is intended to solve the problems of the prior art as described above, and its purpose is to provide a power equipment shifting structure that has a simple structure and is easy to shift.

In order to achieve the above object, the present invention provides the following power equipment transmission structure and power tool.

In one embodiment, the present invention has a first axis, an axis concentric with the first axis, is located at different positions along the axial direction of the first axis, and protrusions are formed in directions facing each other, and the first axis first and second gears freely rotating about an axis; It is disposed concentrically with the first axis between the first and second gears, and is splined or keyed to the first axis so that it rotates with the first axis and can move along the axial direction, and the first and second gears A clutch each having engaging members protruding in the direction of the second gear; an adjustment member configured to move the clutch in the first gear direction or the second gear direction; a second axis disposed parallel to the first axis; Third and fourth gears have a concentric axis with the second axis, are disposed in engagement with the first and second gears at positions corresponding to the first and second gears, and rotate together with the second axis. And the control member includes a knob; It includes a main body that operates in conjunction with the knob and fingers extending from the main body toward the clutch, wherein the main body includes a moving part that moves within the movement of the knob; an internal space into which the moving part is inserted so that the moving part can move in a first direction parallel to the extension direction of the first axis; a first elastic member supporting the moving part in the internal space on one side in the first direction; and a second elastic member supporting the moving part in the internal space on the other side of the first direction.

In one embodiment, the knob includes a pin protruding toward the adjustment member at an eccentric position, and the moving part may include a groove into which the pin is inserted and extending in a second direction perpendicular to the first direction. .

In one embodiment, the main body is formed at one end of the main body in the first direction and includes an open hole communicating with the internal space, and the moving part and the first and A second elastic member may be disposed.

In one embodiment, the main body may further include a cover member that covers the open hole.

In one embodiment, the main body is disposed in the open hole and includes a ring supporting the first or second elastic member, and the first and second elastic members may be in a compressed state in the internal space. .

In one embodiment, the clutch connects the first surface on the first gear side and the second surface on the second gear side, and the first and second surfaces, and has a cross-sectional area smaller than the first and second surfaces. It includes a connection part, and the finger of the adjustment member can be inserted into the space between the first surface and the second surface.

In one embodiment, the present invention provides a body portion; a motor provided in the main body; a transmission structure of the above-described power equipment connected to the motor; and a tool connected to the output end of the transmission structure, wherein at least one pair of the first gear and the third gear or the second gear and the fourth gear is a helical gear pair.

Through the above configuration, the present invention can provide a power equipment shifting structure that is simple in structure and easy to shift.

1 is a schematic diagram of a power tool.
Figure 2 is a perspective view of the transmission structure of power equipment according to an embodiment of the present invention.
Figure 3 is a front view of the transmission structure of power equipment according to an embodiment of the present invention.
Figure 4 is an exploded perspective view of the second axis and connecting parts of Figure 3.
Figure 5 is a perspective view of an adjustment member of the shifting structure of Figure 3;
Figure 6 is an exploded perspective view of Figure 5.
7 to 9 are operational diagrams of the shifting structure of the present invention.
Figure 10 is a perspective view of another embodiment of the adjustment member of the shifting structure.
Figure 11 is an exploded perspective view of Figure 10.

Hereinafter, with reference to the attached drawings, preferred embodiments will be described in detail so that those skilled in the art can easily practice the present invention. However, when describing preferred embodiments of the present invention in detail, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the same symbols are used throughout the drawings for parts that perform similar functions and actions. In addition, in this specification, terms such as 'upper', 'top', 'upper surface', 'lower', 'lower', 'lower surface', 'side', etc. are based on the drawings and are actually elements or components. It may vary depending on the direction in which it is placed.

Additionally, throughout the specification, when a part is said to be 'connected' to another part, this does not only mean 'directly connected', but also 'indirectly connected' with another element in between. Includes. In addition, 'including' a certain component does not mean excluding other components, but rather including other components, unless specifically stated to the contrary.

The transmission structure of the present invention can be applied to conventional power tools such as those shown in FIG. 1, that is, magnetic drilling machines and other power tools that require similar transmission.

2 to 5 show a transmission structure 100 of a power tool according to an embodiment of the present invention.

Specifically, Figure 2 shows a perspective view of the transmission structure of power equipment according to an embodiment of the present invention, and Figure 3 shows a front view of the transmission structure of power equipment according to an embodiment of the present invention. 4 shows an exploded perspective view of the second axis and connecting parts of FIG. 3, FIG. 5 shows a perspective view of the adjustment member of the shifting structure of FIG. 3, and FIG. 6 shows an exploded perspective view of the adjustment member of FIG. 5. It is done.

As shown in Figures 2 and 3, the transmission structure 100 of one embodiment of the present invention includes a rotation shaft 101 connected from a motor (not shown) and a drive gear 102 formed on the rotation shaft 101 of the motor (not shown). ) includes.

The shifting structure 100 also includes a first gear stage 110 including a first axis 111, a second gear stage 130 including a second axis 131, and an adjustment member 160 for controlling shifting. Includes.

The first gear stage 110 includes a first shaft 111; A pinion 112, which is a driven gear formed integrally with the first shaft 111 and rotated by the driving gear 102; First and second gears 115 have a concentric axis with the first axis 111, are located at different positions along the axial direction of the first axis 111, and rotate together with the first axis 111. 120).

The second gear stage 130 includes a second axis 131 disposed parallel to the first axis 111; It has a concentric axis with the second axis 131, is located at different positions along the axial direction of the second axis 131, and is rotated by engaging with the first and second gears 115 and 120, respectively. Protrusions 133a and 135a are formed in opposite directions, respectively, and third and fourth gears 133 and 135 freely rotate about the second axis 131; It is disposed concentrically with the second axis 131 between the first and second gears 133 and 135, rotates with the second axis 131, and is movable along the axial direction. It includes a clutch 125 having a spline 125a splined to the spline 131a of the shaft 121 and locking members 125b and 125c respectively protruding in the direction of the third and fourth gears 133 and 135. do. At this time, key coupling rather than spline coupling is possible in such a way that the second shaft 131 and the clutch 125 are rotated together, and of course, if rotational drive can be applied, other methods can be applied. On the second shaft 131, the axial position of each gear 133 and 135 may be fixed by a snap ring SR.

The second shaft 131 is provided with a driving gear 190 that rotates together with the second shaft 131 and drives the second shaft 131 through the third or fourth gears 133 and 135 and the clutch 125. When this rotates, the rotational force is transmitted to the gear 191 of the tool mounting unit 190 to rotate the tool.

The shift structure 100 is disposed inside the case 50, and in the case of this embodiment, includes only the shift structure including the first and second gear stages 110 and 130, but is not limited thereto and includes additional shift structures. Including the structure, for example, it is possible to achieve 2×2 = 4-speed shifting through two shifting structures.

The case 50 includes a space into which the shift structure 100 is inserted, and a through hole 51 is formed so that the knob 161 for controlling shift is exposed to the outside.

The first gear stage 110 includes a pinion 112, a first gear 115, and a second gear 120 in order along the first axis 111 from the direction in which the motor is disposed to the direction in which the tool is mounted. The second gear stage 130 is assembled by sequentially arranging the third gear 133, the clutch 125, the fourth gear 135, and the driving gear 137 along the second axis 131. do. At this time, the axial direction of the first axis 111 and the second axis 131 is referred to as the first direction.

As the clutch 125 is moved between the third gear 133 and the fourth gear 135 by the adjustment member 160, the gear rotating with the second axis 131 is determined, thereby performing a shift. The third gear 133 and the fourth gear 135 each include protrusions 133a and 135a, and the engaging members 125b and 125c of the clutch 125 are caught by the protrusions 133a and 135a, The third gear 133 or fourth gear 135 rotates together with the clutch 125, and the second shaft 131 and the driving gear 137 rotate through the clutch 125. At this time, one of the third and fourth gears 133 and 135 rotates with the second shaft 131 through the clutch 125, but the other gear is engaged with the first or second gear 115 and 120. Even though it rotates freely with respect to the second axis 131, rotational force may not be transmitted.

The first gear 115 and the third gear 133, the second gear 120 and the fourth gear 135 have different sizes so that shifting is performed, and the first gear 115 and the third gear 133 ) and the transmission ratios of the second gear 120 and the fourth gear 135 are different.

The clutch 125 is disposed between the third gear 133 and the fourth gear 135. The third gear 133 and the fourth gear 135 are spaced apart from each other by at least the thickness of the clutch 125 including the engaging members 125b and 125c, and a sufficient movement distance according to rotation of the knob 161 can be secured. If there is, it may fall further, but the locking members (125b, 125c) must be spaced apart enough to prevent them from being caught on both protrusions.

Clutch 125 has a surface on the third gear 133 side; The surface on the fourth gear 135 side; A connecting portion (125d) connecting the two sides and having a relatively small cross-sectional area; and a spline 125a formed therein, and the finger 171 of the change block 170 is inserted into the connection portion 125d and moves in the axial direction of the second axis 131, thereby forming a clutch ( 125) can be moved in the first direction.

The adjustment member 160 and the change block 170 will be described with reference to FIGS. 4 to 6.

The control member 160 is configured to move the clutch 125 in the direction of the first gear 115 or the second gear 120, and includes a knob 161 that can be rotated by the user, the knob Includes a change block 170 that operates in conjunction with (161) and a guide rod 165 that guides the movement of the change block 170 and extends in a first direction parallel to the axial direction of the first axis 111. do.

The change block 170 includes a main body 175 and a finger 171 extending from the main body 175 toward the clutch, and the main body 175 is moved internally according to the movement of the knob 161. Moving unit (177); an internal space 176 into which the moving part 177 is inserted so that the moving part 177 can move in the first direction; a first elastic member (178a) supporting the moving part (177) on one side in the first direction in the internal space (176); and a second elastic member 178b supporting the moving part 177 in the internal space 176 on the other side in the first direction.

The knob 161 includes a handle for rotation and a protruding pin 161a that protrudes toward the change block 170 at an eccentric position away from the rotation center C on the opposite side of the handle. The pin 161a is rotated at a position off the center C by rotation.

A through hole 172 is formed in the main body 175 of the change block 170, and the guide rod 165 passes through this through hole 172, so that the change block 170 rotates the knob 161. Movement by is limited to the first direction.

The main body 175 of the change block 170 has an internal space 176, and the moving part 177 and the first and second elastic members 178a and 178b are disposed in the internal space 176. The moving unit 177 includes a member 177d having a U-shaped cross-section to form a groove 177a formed in a second direction perpendicular to the first direction, and a member 177d extending from one side in the first direction and It includes protrusions 177b and 177c protruding to the other side. Springs, which are the first and second elastic members 178a and 178b, are fitted into the protrusions 177b and 177c.

The inner space 176 has one side open to correspond to the moving part 177 and the elastic members 178a and 178b, so that the elastic members 178a and 178b and the moving part 177 are inside the assembled state. It can be inserted into space 176. The elastic members 178a and 178b are not particularly limited but are springs in this embodiment.

The main body 175 has an open surface on the knob 161 side in the internal space 176, and the pin 161a of the knob 161 is inserted into the groove 177a of the moving part 177, so that the knob 161 ), the moving part 177 moves according to the rotation. However, movement of the knob 161 in the second direction rather than the first direction only causes the pin 161 to move within the groove 177a and does not cause the movement part 177 to move.

The operation of the shifting structure 100 of the present invention will be described in detail with reference to FIGS. 7 to 9.

Figure 7 shows the knob 161 disposed in the middle position, and Figure 8 shows the clutch 125 and the third gear 133 being engaged with the pin 161a raised by rotating the knob 161. This is the state before, and FIG. 9 is a schematic diagram of the clutch 125 and the third gear 133 being coupled as the third gear 133 is rotated by the rotation of the motor in the state of FIG. 8.

As shown in FIG. 7, in the middle position, the finger 171 positions the clutch 125 in a position where it is not engaged with either the third gear 133 or the fourth gear 135. As shown in FIG. 8, by rotating the knob 161, the pin 161a is rotated, thereby raising its position toward the third gear 133. Since the pin 161a is inserted into the groove 177a of the moving part 177 of the change block 170, the moving part 177 moves together with the pin 161a. However, in this case, when the engaging members 125b and 125c of the clutch 125 collide with the protrusion 133a of the third gear 133, movement of the change block 170 in the first direction is not achieved due to interference, Instead, the moving part 177 further presses the first elastic member 178a, and the pressing force of the second elastic member 178b is released, thereby moving the moving part 177.

In the state shown in FIG. 8, the elastic pressing force of the first elastic member 178a is large, so the main body 175 is forced upward in FIG. 8. At this time, when the third gear 133 engaged with the first gear 115 is rotated by the rotation of the motor, the locking members 125b and 125c and the third gear ( As the position of the protrusion 133a of 133) changes, it comes to a suitable position, and the main body 175 and the fingers 171 are moved by the elastic force of the first elastic member 178a, and the protrusion (133a) is moved as shown in FIG. 9. 133a) and the locking member 125b are engaged, and the second shaft 131 and the driving gear 137 are rotated through the clutch 125.

In the opposite case, it can be operated with the same operation. When the knob 161 is rotated in the opposite direction, the pin 161a of the knob 161 moves down. At this time, if the main body 175 and the finger 171 can move the clutch 125 downward, the locking members 125b and 125c and the protrusion 135a of the fourth gear 135 engage and shift the gear. However, if interference occurs and they cannot be combined, the moving part 177 moves down without moving the main body 175 and the fingers 171, similar to FIG. 8, and instead, the first and second elastic It is in a state of receiving an elastic force by the members 178a and 178b, and the positions of the locking members 125b and 125c and the protrusion 135a of the fourth gear 135 change as the second gear 120 rotates. When it comes to the correct position, the main body 175 and the fingers 171 are moved by the elastic pressure and the gear is shifted.

In the case of the transmission structure 100 according to the present invention, the adjustment member 160 changes the gear ratio according to the gear ratio of the first gear 115 to the third gear 133 and the second gear 120 to the fourth gear 135. ) can be changed according to the gear ratio, and at this time, when the clutch 125 is moved to the first or second position by the adjustment member 160, the clutch 125 rotates according to the rotation of the motor and moves to the first and second positions. Since the third gear 133 or fourth gear 135 and the clutch 125 can be engaged and rotated with the help of the elastic force of the second elastic members 178a and 178b, when shifting gears, hold the tool with your hand and rotate it. There is no need to allow gear shifting to occur.

In the present invention, the adjustment member 160 includes a change block 170, and the change block 170 has first and second elastic members 178a and 178b built into the main body 175. Accordingly, there is no need to assemble the spring while pressing it within the case 50, and in particular, it can be easy to separate and assemble the knob 161 connected to the inside and outside of the case 50. Even in the event of a breakdown, repairs can be made without changing other members by replacing only the change block 170. The change block 170 can also be repaired while separated from the power tool 1, making repairs easy. .

Furthermore, since there are no elastic members in either the first shaft 111 or the second shaft 131, helical gears are applied to all pairs of the first to fourth gears 115, 120, 133, and 135. Therefore, noise can be reduced, and power is transmitted stably, which is advantageous for transmitting large power.

Meanwhile, another embodiment of the change block 170 is shown in FIGS. 10 and 11. The adjustment member 160 connected to the change block 170 has the same structure as the embodiment of FIG. 4.

The change block 170 includes a main body 175 and a finger 171 extending from the main body 175 toward the clutch, and the main body 175 is moved internally according to the movement of the knob 161. Moving unit (177); an internal space 176 into which the moving part 177 is inserted so that the moving part 177 can move in the first direction; a first elastic member (178a) supporting the moving part (177) on one side in the first direction in the internal space (176); and a second elastic member 178b supporting the moving part 177 in the internal space 176 on the other side in the first direction.

A through hole 172 is formed in the main body 175 of the change block 170, and the guide rod 165 passes through this through hole 172, so that the change block 170 rotates the knob 161. Movement by is limited to the first direction.

The main body 175 of the change block 170 has an internal space 176, and the moving part 177 and the first and second elastic members 178a and 178b are disposed in the internal space 176. The moving unit 177 includes a member 177d having a U-shaped cross-section to form a groove 177a formed in a second direction perpendicular to the first direction, and a member 177d extending from one side in the first direction and It includes protrusions 177b and 177c protruding to the other side. Springs, which are the first and second elastic members 178a and 178b, are fitted into the protrusions 177b and 177c.

An open hole 175a is formed on one side of the main body 175 of the change block 170, and the first and second elastic members 178a and 178b can be inserted through the open hole 175a. Meanwhile, the open hole 175a is covered by a cover member 179, and the cover member 179 is fixed in position by a bolt B. Inside the main body 175, the first and second elastic members 178a and 178b are in a slightly pressed state, and the first and second elastic members are positioned at the midpoint of the internal space 176 in a state in which no external force is applied. The elastic forces of (178a, 178b) are configured to be the same. Meanwhile, in this embodiment, the elastic members 178a and 178b are supported by the cover member 179 and the bolt B, but are not limited thereto, and a component such as a snap ring is disposed in the open hole 175a to provide elasticity. It can support members 178a and 178b.

The main body 175 has an open surface on the knob 161 side in the internal space 176, and the pin 161a of the knob 161 is inserted into the groove 177a of the moving part 177, so that the knob 161 ), the moving part 177 moves according to the rotation. However, movement of the knob 161 in the second direction rather than the first direction only causes the pin 161 to move within the groove 177a and does not cause the movement part 177 to move.

The change block 170 includes an open hole 175a leading to the internal space 176 and a cover member 179 that covers the open hole 175a, and the cover member 179 is detachable by a bolt B. By serving as a support for the first and second elastic members 178a and 178b, assembly can be facilitated and gear shifting can be facilitated.

Although the above description focuses on one embodiment of the present invention, the present invention is not limited thereto and may be implemented with various modifications.

Power transmission has been described as being transmitted from the first axis 111 to the second axis 131, but conversely, a configuration in which power is transmitted from the second axis 131 to the first axis is also possible. In other words, the present invention is applicable if the gear is connected to one axis to rotate together, and the gear to the other axis is connected to freely rotate about the axis, and the gear and the shaft are rotated together through a clutch. .

1: Power tool 10: Drill part
20: magnetic part 50: case
100: Shift structure 110: First gear stage
111; First axis 115: First gear
120: second gear 125: clutch
125a: spline 125b, 125c: catching protrusion
130: second gear stage 131: second axis
133: 3rd gear 135: 4th gear
137: 5th gear 140: 3rd gear stage
160: adjustment member 161: knob
161a: Pin 165: Guide rod
170: Change block 171: Finger
175: body 176; interior space
177: moving part 177a: home
178a, 178b: elastic member 179: cover member

Claims (8)

1st axis,
First and second gears have a concentric axis with the first axis, are located at different positions along the axial direction of the first axis, have protrusions formed in directions facing each other, and freely rotate about the first axis. ;
It is arranged concentrically with the first axis between the first and second gears, and is splined or keyed to the first axis so that it rotates with the first axis and can move along the axial direction, and the first and second gears A clutch each having engaging members protruding in the direction of the second gear;
an adjustment member configured to move the clutch in the first gear direction or the second gear direction;
a second axis disposed parallel to the first axis; and
third and fourth gears having concentric axes with the second axis, arranged to engage with the first and second gears at positions corresponding to the first and second gears, and rotating together with the second axis;
Includes,
The adjustment member includes a knob and a change block that can be rotated by a user,
The change block includes a main body that operates in conjunction with the knob and fingers extending from the main body toward the clutch,
The main body includes a moving part internally moved according to the movement of the knob; an internal space into which the moving part is inserted so that the moving part can move in a first direction parallel to the extension direction of the first axis; a first elastic member supporting the moving part in the internal space on one side in the first direction; And a second elastic member supporting the moving part in the internal space on the other side of the first direction,
The main body is formed at one end of the main body in the first direction and includes an open hole communicating with the internal space,
A transmission structure of power equipment in which the moving part and first and second elastic members are disposed in the internal space through the open hole.
According to claim 1,
The knob includes a pin protruding toward the main body at an eccentric position,
The shifting structure of a power equipment wherein the moving part includes a groove into which the pin is inserted and extending in a second direction perpendicular to the first direction.
delete According to claim 1,
The main body includes a cover member that covers the open hole and a through hole that guides movement in the first direction along an external guide.
According to claim 4,
The main body is disposed in the open hole and includes a ring supporting the first or second elastic member.
1st axis,
First and second gears have a concentric axis with the first axis, are located at different positions along the axial direction of the first axis, have protrusions formed in directions facing each other, and freely rotate about the first axis. ;
It is arranged concentrically with the first axis between the first and second gears, and is splined or keyed to the first axis so that it rotates with the first axis and can move along the axial direction, and the first and second gears A clutch each having engaging members protruding in the direction of the second gear;
an adjustment member configured to move the clutch in the first gear direction or the second gear direction;
a second axis disposed parallel to the first axis; and
third and fourth gears having concentric axes with the second axis, arranged to engage with the first and second gears at positions corresponding to the first and second gears, and rotating together with the second axis;
Includes,
The adjustment member includes a knob and a change block that can be rotated by a user,
The change block includes a main body that operates in conjunction with the knob and fingers extending from the main body toward the clutch,
The main body includes a moving part internally moved according to the movement of the knob; an internal space into which the moving part is inserted so that the moving part can move in a first direction parallel to the extension direction of the first axis; a first elastic member supporting the moving part in the internal space on one side in the first direction; And a second elastic member supporting the moving part in the internal space on the other side of the first direction,
A transmission structure for power equipment in which the first and second elastic members are in a compressed state in the internal space.
According to claim 1,
The clutch connects the first surface on the first gear side and the second surface on the second gear side, and the first surface and the second surface, and includes a connecting portion having a smaller cross-sectional area than the first surface and the second surface,
A shifting structure of power equipment in which the fingers of the adjustment member are inserted into the space between the first and second surfaces.
main body;
a motor provided in the main body;
A transmission structure of the power equipment of any one of claims 1, 2, and 4 to 7 connected to the motor; and
It includes a tool connected to the output end of the shifting structure,
A power tool wherein at least one pair of the first gear and the third gear or the second gear and the fourth gear is a helical gear pair.

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