CN220903224U - Electric tool - Google Patents

Abstract

An electric tool has a main body shell and a handle assembly connected to the main body shell on a body; the main body shell has a head and a tail arranged in sequence along a second direction and located on a straight line axis, and the side of the tail facing the second direction has an end wall and a setting wall closer to the handle assembly; a straight line that is tangent to the most protruding part of the handle assembly and the surface of the end wall and intersects the straight line axis is defined as a collision boundary line, and the setting wall is located on the side of the collision boundary line facing a first direction opposite to the second direction; a setting device is provided in the tail, and its panel portion is exposed to the outside of the setting wall. By arranging the panel portion at the tail and within the collision boundary, the setting device is less susceptible to collision with external objects than the end wall and the handle assembly, and the user can select and set the operating mode of the electric tool.

Description

electrical tools

Technical Field

The utility model relates to an electric tool, in particular to a setting device which is arranged at a position of the electric tool which is not susceptible to collision, thereby making the setting device less susceptible to collision and damage.

Background technique

Existing power tools, such as power wrenches, power screwdrivers, power drills, or power nail guns, are handheld tools that use motors as power sources. Since users have the need to set the operating mode of the power tools, such as changing the direction of the power tool or adjusting the speed and torque of the power tool, most of the power tools launched in recent years have setting devices on the body to allow users to set the operating mode of the power tools.

However, when using a power tool, the user often places the power tool in a work area beside him/her when the power tool is not in use. There are other hard objects in the work area, which makes the power tool easy to fall or drop, or even collide with other objects when the user moves the power tool. In addition, the setting device itself is relatively fragile, and the setting device is often set at a protruding surface that is easily impacted. As a result, the setting device of the power tool is easily damaged by collision, and the function of setting the operating mode of the power tool is lost.

Utility Model Content

In view of this, the main purpose of the utility model is to provide an electric tool, which can prevent the setting device from being damaged by collision by arranging the setting device at a position where the electric tool is not easily hit by other objects, and allow the user to conveniently set the operating mode of the electric tool through the setting device.

In order to achieve the above-mentioned purpose, the electric tool provided by the utility model includes a body, a motor, a reduction gear set, an output shaft, a control circuit and a setting device, wherein the body includes a main body shell and a handle assembly connected to one side around the main body shell; the main body shell has a head and a tail located sequentially on a straight line axis, and a first direction and a second direction are defined in opposite directions along the straight line axis, the head is located on the side of the tail facing the first direction, and the side of the tail facing the second direction has an end wall and a setting wall, and the setting wall is closer to the handle assembly than the end wall.

The handle assembly includes a grip shell and a battery module; one end of the grip shell has a base end for connecting to the main body shell, and the other end of the grip shell away from the base end has a battery joint; the battery module is detachably coupled to the battery joint; a straight line that is tangent to the most protruding part of the handle assembly toward the second direction and to the surface of the end wall and intersects with the straight axis is defined as a collision boundary line; the setting wall is located on the side of the collision boundary line toward the first direction.

The motor, the reduction gear set and the output shaft are arranged in the main body shell with the linear axis as the rotation center and are connected in sequence along the first direction. The output shaft has a driving head protruding from the head; the control circuit is arranged in the body and is electrically connected to the motor and the battery module respectively, so as to control the actuation of the motor; the setting device is arranged in the tail and is electrically connected to the control circuit, and the setting device has a panel portion exposed outwardly from the setting wall.

The utility model has a setting wall located on the side of the collision boundary line facing the first direction, and the panel portion of the setting device is exposed outwardly from the setting wall, so that the setting device is protected by the handle assembly and the end wall of the tail. Compared with the handle assembly and the end wall that are more protruding in the second direction, the setting wall where the setting device is located is less likely to be hit by external objects, so the setting device can be prevented from being damaged by external objects. In addition, the setting wall is located on the side of the tail of the machine body facing the second direction, which is a position that is easily visible and easily touched by the user's hand when holding the handle assembly. Therefore, the panel portion of the setting device is exposed outwardly from the setting wall, and also has the function of allowing the user to conveniently set the power tool on the panel portion.

A preferred configuration of the electric tool is to set the most protruding portion of the component toward the second direction as the battery module.

The preferred configuration of the above-mentioned electric tool is to set an opening on the surface of the setting wall, and the panel part is exposed outward from the setting wall through the opening; the surface of the panel part can be aligned with the periphery of the opening, or the panel part can be set on the inner side of the opening, so as to further reduce the probability of the panel part being hit by external objects. Preferably, the panel part of the setting device has a button, which is used to trigger the control circuit to select different operation modes to control the operation of the electric tool; further, the panel part of the setting device has a display area, and the display area has at least one LED light, which is used to display which operation mode the electric tool is in when the control circuit is triggered by the button to select different operation modes to control the operation of the electric tool.

The preferred configuration of the above-mentioned electric tool is that the opening is set to have an upper edge closer to the linear axis and a lower edge farther from the linear axis, the upper edge is parallel to the lower edge. A virtual inclined straight line intersecting the linear axis and passing through the middle point of the upper edge and the middle point of the lower edge at the same time has an inclination angle less than 90 degrees with the linear axis; preferably, the inclination angle is between 45 degrees and 90 degrees; optimally, the inclination angle is between 65 degrees and 75 degrees.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a first preferred embodiment of the utility model;

FIG2 is a perspective view of the first preferred embodiment of the utility model from another viewing angle;

FIG3 is a side view of a first preferred embodiment of the utility model;

FIG4 is a top view of a first preferred embodiment of the utility model;

FIG5 is a cross-sectional view along line F5-F5 of FIG4 ;

FIG6 is a cross-sectional view along line F6-F6 of FIG4;

FIG7 is a rear side view of FIG1;

FIG8 is a schematic diagram showing the relative positions of the setting wall and the collision boundary line in FIG4;

FIG. 9 is a side view of a second preferred embodiment of the present invention.

Description of reference numerals:

100: Power tools

10: Body

11: Main body shell

12: Head

13: Tail

131: End wall

132: Set up wall

133: Surface

134: Opening

135: Top edge

136: Lower edge

14: Middle

15: Put the components

16: Handle shell

161: Base end

162: Battery joint

163: Trigger hole

164: Trigger switch

165: Steering knob

17: Battery Module

17A: Battery module

171: Battery box

172: Connecting tube

173: Rod Insertion

20: Motor

30: Reduction gear set

40: Output shaft

42: Impact device

421: Impact drill

43: Shaft body

44: Drive head

50: Control circuit

60: Setting device

61: Display area

611: LED Light

62: Panel Department

63: Button

CL: Linear axis

D1: First direction

D2: Second direction

IL: Collision boundary line

TL: Tilt Line

θ: Tilt angle

Detailed ways

In order to more clearly explain the utility model, two preferred embodiments are described in detail with reference to the accompanying drawings. Please refer to the first preferred embodiment shown in Figures 1 to 5 and 7. The power tool 100 of the first preferred embodiment of the utility model is an electric wrench for tightening a bolt on an object or removing a bolt from an object. The power tool 100 includes a body 10, a motor 20, a reduction gear set 30, an output shaft 40, a control circuit 50 and a setting device 60.

The body 10 includes a main body shell 11 and a handle assembly 15 connected to one side of the main body shell 11. The main body shell 11 has a head 12 and a tail 13 sequentially located on a virtual linear axis CL, and a middle section 14 is connected between the head 12 and the tail 13. The opposite directions along the linear axis CL are defined as a first direction D1 and a second direction D2. The head 12 and the tail 13 are respectively connected to one side of the middle section 14 facing the first direction D1 and the other side facing the second direction D2, and the head 12 is located on the side of the tail 13 facing the first direction D1.

Referring to FIGS. 1 to 3 and 5 , the side of the tail portion 13 facing the first direction D1 has an end wall 131 and a setting wall 132. In the preferred embodiment, the end wall 131 is substantially perpendicular to the linear axis CL, and the end wall 131 protrudes further toward the second direction D2 than the setting wall 132; the setting wall 132 is closer to the handle assembly 15 than the end wall 131. The setting wall 132 has a surface 133, and the surface 133 has an opening 134. The opening 134 has an upper edge 135 closer to the linear axis CL and a lower edge 136 farther from the linear axis CL, and the upper edge 135 is parallel to the lower edge 136. A virtual inclined straight line TL intersecting the linear axis CL and passing through the middle point of the upper edge 135 and the middle point of the lower edge 136 has an inclination angle θ less than 90 degrees with the linear axis CL, so that the surface of the setting wall 132 is inclined compared to the end wall 131. Preferably, the inclination angle θ is between 45 degrees and 90 degrees; and most preferably, the inclination angle θ is between 65 degrees and 75 degrees. In this way, the surface 133 of the setting wall 132 and its opening 134 are generally oriented toward the direction of the user's visual observation when holding the handle assembly 15, making it convenient for the user to visually observe and touch the position of the setting wall 132 with his hand.

The handle assembly 15 includes a grip shell 16 and a battery module 17. One end of the grip shell 16 has a base end 161 for connecting to one side around the main body shell 11. A trigger hole 163 is provided on the side of the base end 161 facing the first direction D1. A trigger switch 164 is provided in the base end 161 and a part of the trigger switch 164 passes through the trigger hole 163. A steering knob 165 is provided in the part of the base end 161 adjacent to the main body shell 11. The steering knob 165 has a switching function of three stages, namely, a middle position and a forward position and a reverse position in the opposite direction. The grip shell 16 is connected to the tail portion 13 and the middle section 14 of the main body shell 11 with the base end 161 to form a housing including the tail portion 13, the middle section 14 and the grip shell 16. The other end of the grip shell 16 away from the base end 161 has a battery joint 162 for detachably combining with the battery module 17. In this preferred embodiment, the battery module 17 has a battery box 171, and the battery box 171 has a connecting tube 172 on the side facing the handle shell 16, and an insertion rod portion 173 is disposed in the connecting tube 172. When the battery module 17 is detachably combined with the handle shell 16, the insertion rod portion 173 penetrates into the handle shell 16, the connecting tube 172 abuts against the free end of the handle shell 16, and the connecting tube 172 is buckled into the battery joint portion 162.

Please refer to FIG. 5, FIG. 7 to FIG. 8, and define a collision boundary line IL as a straight line that is tangent to the most protruding portion of the handle assembly 15 toward the second direction D2 and the surface of the end wall 131 and intersects the linear axis CL. In the preferred embodiment, the most protruding portion of the handle assembly 15 toward the second direction D2 is the most protruding portion of the battery box 171 of the battery module 17 toward the second direction D2. In the preferred embodiment, the setting wall 132 is located on the side of the collision boundary line IL toward the first direction D1. In this way, when the electric tool 100 is hit from the side of the second direction D2, or when the electric tool 100 falls toward the floor from the side of the second direction D2, the handle assembly 15 of the electric tool 100 that is more protruding toward the second direction D2, especially the portion of the battery module 17, and the portion of the end wall 131 of the tail 13 will be hit first, thereby protecting the setting wall 132 and reducing the probability of the setting wall 132 being hit by external objects. Furthermore, compared to the end wall 131 facing the second direction D2 , the surface 133 is an inclined setting wall 132 compared to the end wall 131 , which reduces the area of the surface 133 facing the second direction D2 and further reduces the probability of the surface 133 being directly hit by external objects.

Please refer to FIGS. 5 to 8 , the motor 20, the reduction gear set 30, and the output shaft 40 are connected in sequence along the first direction D1 with the linear axis CL as the rotation center. In the preferred embodiment, the reduction gear set 30 is a planetary gear set and is connected between the motor 20 and the output shaft 40 to reduce the rotation output of the motor 20 and transmit it to the output shaft 40. An impact device 42 is provided on one side of the main body shell 11 close to the head 12, and the impact device 42 has an impact drill 421 sleeved on the output shaft 40. The impact device 42 is used in the process of tightening or loosening the bolt of the power tool 100. When encountering a certain degree of resistance, the impact drill 421 will apply an intermittent impact force to the output shaft 40 in the same direction of rotation of the output shaft 40 to provide the output shaft 40 with intermittent auxiliary torque to overcome the resistance. Specifically, the output shaft 40 has a shaft body 43 and a driving head 44 connected to the shaft body 43 . The impact drill 421 is sleeved on the shaft body 43 . The driving head 44 protrudes out of the head 12 for connecting with a bolt sleeve.

The control circuit 50 is disposed in the body 10. In the preferred embodiment, the control circuit 50 is disposed on one side of the main body shell 11 adjacent to the grip shell 16. The control circuit 50 is electrically connected to the motor 20, the trigger switch 164, the steering knob 165, and the battery module 17 respectively. The battery module 17 supplies the power required for the operation of the power tool 100 through the control circuit 50. The control circuit 50 is triggered by the signal of the trigger switch 164 to control the operation of the motor 20. When the steering knob 165 is switched to the forward position, the control circuit 50 controls the motor 20 to run forward. When the steering knob 165 is switched to the reverse position, the control circuit 50 controls the motor 20 to run reversely. The control circuit 50 can also receive a signal from the setting device 60, thereby selecting to control the motor 20 to drive the output shaft 40 at different speeds and torques, so that the power tool 100 can operate in different speed and torque operation modes. The setting device 60 is disposed in the tail portion 13 and has a panel portion 62 exposed outside the setting wall 132; in the preferred embodiment, the panel portion 62 is located inside the opening 134 and is exposed to the outside through the opening 134 of the setting wall 132. The setting device 60 is electrically connected to the control circuit 50, and through the setting of the user on the panel portion 62, the control circuit 50 selects to control the motor 20 to drive the output shaft 40 at different speeds and torques, thereby allowing the power tool 100 to operate in different speed and torque modes.

As described above, since the setting device 60 is disposed at the tail portion 13, and the panel portion 62 is exposed from the opening 134 to the setting wall 132. Benefiting from the fact that the setting wall 132 is located on the side of the collision boundary line IL facing the first direction D1, the setting device 60 is protected by the protective handle assembly 15, especially the battery module 17 and the end wall 131 of the tail portion 13; and because the setting wall 132 is less likely to be hit by external objects, the setting device 60 is also not easily damaged by external objects. In addition, the panel portion 62 exposed from the opening 134 is not only facing the user's visual direction, so that the panel portion 62 is easy for the user to contact and set, and it is convenient for the user to select the operating mode of the power tool 100; the design of arranging the panel portion 62 inside the opening 134 can further prevent external objects from directly hitting the panel portion 62 of the setting device 60.

In this preferred embodiment, the setting device 60 has a display area 61 on the panel portion 62, and the display area 61 has several LED lights 611. Specifically, the display area 61 has three LED lights 611; a button 63 is provided on the portion of the panel portion 62 located outside the display area 61, and the button 63 includes a micro switch and is electrically connected to the control circuit 50, for triggering the control circuit 50 to select different operating modes to control the operation of the power tool 100, and the control circuit 50 is also electrically connected to the several LED lights 611.

In this preferred embodiment, please refer to FIG. 5 and FIG. 7 . When the steering knob 165 is switched to the middle position, the number of lights on the three LED lights 611 can be displayed as low, medium and high at least three levels of power by pressing the trigger switch 164. When the steering knob 165 is switched to the forward position, the control circuit 50 can be triggered to control the motor 20 by pressing the button 63. When the user presses the trigger switch 164, the motor 20 is selectively controlled to drive the output shaft 40 to rotate at different speeds. In this preferred embodiment, the control circuit 50 can control the motor 20 to output torques from low to high in four levels. When the button 63 is pressed, the torque and speed of the first, second, third and fourth levels are switched in a cyclic manner. When the control circuit 50 controls the motor 20 to drive the output shaft 40 at a specific speed torque, so that the power tool 100 operates at the speed torque of the specified number, the first, second, third, and fourth torque and speed operation modes of the power tool 100 are displayed by only lighting up the first, second, and third of the three LED lights 611, or lighting up all of them, that is, the speed torque of the power tool 100 is currently displayed as a light on the LED lights 611. In other preferred embodiments, the current torque speed can also be indicated by the number of LED lights 611 that light up.

In other preferred embodiments, only one LED light 611 may be provided in the display area 61 of the panel portion 62. In this case, the color of the light emitted by the single LED light 611, such as red, orange (or yellow), or green light, can represent that the power tool 100 is running at a relatively different speed torque such as high, medium, or low, or that the current power is low, medium, or high. In other preferred embodiments, one or more seven-segment displays may be used to replace the above-mentioned one LED light or a combination of multiple LED lights. A seven-segment display in the display area 61 can display the relative size of the speed torque and power (for example, a seven-segment display displays the numbers 0 to 9 to represent the relative size of the speed torque and power), or a combination of two or more seven-segment displays can be used to display the specific values of the speed torque and power.

Alternatively, if a liquid crystal panel is used to replace the LED lights 611 disposed on the panel portion 62, the current control circuit 50 can directly display the torque value at which the motor 20 drives the output shaft 40, or the current power level is low, medium, or high, or the remaining power is displayed as a percentage for the user to view. The present invention uses a setting device 60 to trigger the control circuit 50 to select the operating mode of the power tool 100. In addition to the first preferred embodiment described above, which adjusts the torque speed of the power tool 100 to different speed torque levels, the operating mode can also be other feasible operating modes for the power tool 100, such as replacing the steering knob 165 with the setting device 60 to control the motor 20 to drive the output shaft 40 to rotate forward and reverse.

Please refer to the second preferred embodiment of the utility model shown in FIG. 9 . The difference between the second preferred embodiment and the first preferred embodiment is that in the second preferred embodiment, the battery joint 162 of the fuselage 10 is combined with a battery module 17A of a different form. The battery module 17A of the second preferred embodiment is still the most protruding part of the handle assembly 15 toward the second direction D2. When a straight line that is tangent to the most protruding part of the handle assembly 15 toward the second direction D2 and the surface of the end wall 131 and intersects with the linear axis CL is defined as a collision boundary line IL, the setting wall 132 is still located on the side of the collision boundary line IL toward the first direction D1. In this way, the setting device 60 of the second preferred embodiment is also protected by the handle assembly 15 and the end wall 131 of the tail 13, and the probability of being hit by external objects is low, and it is not easy to be damaged by external objects.

In addition to the first and second preferred embodiments of the present invention, in which the panel portion 62 of the setting device 60 is disposed in the opening 134 of the setting wall 132, in other preferred embodiments, the surface of the panel portion 62 may be disposed in a state aligned with the periphery of the opening 134. In this case, the panel portion 62 of the setting device 60 is still on the side of the collision boundary line IL facing the first direction D1, and is still protected by the handle assembly 15 and the end wall 131 of the tail portion 13.

The above description is only a preferred feasible embodiment of the present utility model. Any equivalent changes made by applying the specification and claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims (9)

1. An electric tool, comprising a body, a motor, a reduction gear set, an output shaft, a control circuit and a setting device, wherein:

The body comprises a body shell and a handle assembly connected to one side around the body shell; the main body shell is provided with a head part and a tail part which are sequentially positioned on a linear axis, a first direction and a second direction are defined along two opposite directions of the linear axis, the head part is positioned at one side of the tail part facing the first direction, one side of the tail part facing the second direction is provided with an end wall and a setting wall, and the setting wall is closer to the handle assembly than the end wall;

The handle assembly includes a handle housing and a battery module; one end of the grab handle shell is provided with a base end part and is used for being connected with the main body shell, and the other end of the grab handle shell, which is far away from the base end part, is provided with a battery joint part; the battery module is detachably coupled to the battery engaging portion; defining a straight line intersecting said straight line axis as a collision boundary line, both tangential to the most convex portion of said handle assembly in the second direction and to the surface of said end wall; the arrangement wall is positioned at one side of the collision boundary line facing the first direction;

The motor, the reduction gear set and the output shaft are arranged in the main body shell by taking the linear axis as a rotation center and are sequentially connected along the first direction, and the output shaft is provided with a driving head protruding out of the head; the control circuit is arranged in the machine body and is respectively and electrically connected with the motor and the battery module, so as to control the motor to act; the setting device is arranged in the tail part and is electrically connected with the control circuit, and the setting device is provided with a panel part which is exposed out of the setting wall.

2. The power tool of claim 1, wherein the mounting wall has a surface, the surface having an opening, the faceplate portion being exposed from the opening to the mounting wall.

3. The power tool of claim 2, wherein the most convex portion of the handle assembly toward the second direction is a portion of the battery module.

4. The power tool of claim 2, wherein said opening has an upper edge nearer said linear axis and a lower edge farther from said linear axis, said upper edge being parallel to said lower edge; a virtual inclined straight line intersecting the straight line axis and passing through the upper edge intermediate point and the lower edge intermediate point at the same time, wherein an inclined angle smaller than 90 degrees is formed between the inclined straight line and the straight line axis.

5. The power tool of claim 4, wherein the tilt angle is between 45 degrees and 90 degrees.

6. The power tool of claim 5, wherein the tilt angle is between 65 degrees and 75 degrees.

7. The power tool according to claim 2, wherein the panel portion is provided inside the opening.

8. The power tool of claim 7, wherein the faceplate portion of the setting device has a button for triggering the control circuit to select different modes of operation for controlling operation of the power tool.

9. The power tool of claim 8, wherein the panel portion of the setting device has a display area with at least one LED light for displaying which mode of operation the power tool is in when the button triggers the control circuit to select the different modes of operation.