Power tool

Abstract

The present disclosure relates to a power tool, a battery pack of which slides from an upper side to a lower side, and first, second, and third grip grooves are provided between a front end surface and a rear end surface of a holding case, the first grip groove is positioned above the second and third grip grooves, the second grip groove is positioned adjacent to a trigger, and the third grip groove is positioned adjacent to a battery pack receiving case. Also, in a direction of a longitudinal center line passing through the center of the holding case, the distance between the front end surface and the rear end surface of the holding area is greater than or equal to 83 mm and less than 135 mm, and the distance between the third point of the third grip groove that is farthest from the longitudinal center line and the rear end surface is greater than or equal to 63 mm and less than 105 mm.

Description

Technical Field

[0001] This disclosure relates to a power tool. Background Technology

[0002] An electric motor is usually installed inside the casing of a cutting machine as a drive source to rotate the grinding disc or saw blade that serves as the tool head. The grip housing connected to the casing is used by the operator to hold the cutting machine to cut or grind metal, wood, stone, etc. Summary of the Invention

[0003] The purpose of this disclosure is to provide a power tool that is compact, comfortable to hold, safe to place, and applicable to multiple scenarios.

[0004] To achieve the above objectives, this disclosure provides the following technical solution: an electric tool, comprising:

[0005] The housing includes a body housing, a grip housing, and a battery pack receiving housing. The grip housing is located behind the body housing and extends longitudinally in the front-to-back direction. The battery pack receiving housing is disposed at the rear end of the grip housing.

[0006] A motor and a trigger, the motor being housed within the housing, the trigger being disposed on the grip housing and configured to drive the motor in response to a triggering operation by an operator;

[0007] A tool spindle and a working head, wherein the tool spindle is at least partially housed within the machine housing and driven by the motor, and the working head is detachably attached to the tool spindle;

[0008] A battery pack, removably mounted to the battery pack receiving housing to provide power to the motor, the battery pack sliding from top to bottom to be mounted to the battery pack receiving housing;

[0009] The gripping housing has a gripping area, which has a front end face and a rear end face, and a first gripping groove, a second gripping groove and a third gripping groove located between the front end face and the rear end face. The first gripping groove is located above the second gripping groove and the third gripping groove. The third gripping groove is located near the trigger. The second gripping groove is located near the battery pack receiving housing. The front end face and the rear end face are both parallel to the vertical direction.

[0010] The axis passing through the center of the gripping housing is defined as the longitudinal centerline; the intersection of the front end face and the first gripping groove is defined as the first point, and the first point on the first gripping groove is the farthest from the longitudinal centerline; the intersection of the rear end face and the second gripping groove is defined as the second point, and the second point on the second gripping groove is the farthest from the longitudinal centerline; the point on the third gripping groove that is farthest from the longitudinal centerline is defined as the third point.

[0011] In the direction of the longitudinal centerline, the distance between the front end face and the rear end face is greater than or equal to 83 mm and less than 135 mm, and the distance between the third point and the rear end face is greater than or equal to 63 mm and less than 105 mm.

[0012] In some embodiments, the angle between the longitudinal axis of the battery pack and the longitudinal centerline passing through the center of the grip housing is less than 90°, and the battery pack receiving housing extends downward from the grip housing and the lower part of the battery pack is further forward than the upper part.

[0013] In some embodiments, the angle between the longitudinal axis of the battery pack and the longitudinal centerline passing through the center of the grip housing is between 80° and 90°.

[0014] In some embodiments, the longitudinal axis of the battery pack is at an angle of 85° relative to the longitudinal centerline passing through the center of the grip housing.

[0015] In some embodiments, the power tool includes a connector, the battery pack receiving housing includes a first half-shell, a second half-shell, and a receiving part, the receiving part being located on the first half-shell and the second half-shell, the connector engaging with the receiving part to connect the first half-shell and the second half-shell, the receiving part being located at the upper end of the battery pack receiving housing, and the distance between the front end face and the receiving part being greater than or equal to 89 mm in a direction parallel to the longitudinal centerline.

[0016] In some embodiments, the distance between the front end face and the rear surface of the battery pack receiving housing is greater than or equal to 108 mm and less than 175 mm in a direction parallel to the longitudinal centerline.

[0017] In some embodiments, the battery pack receiving housing includes a battery pack receiving port for receiving a battery pack, wherein the distance between the front end face and the front surface of the battery pack receiving port is greater than or equal to 91 mm and less than 155 mm in a direction parallel to the longitudinal centerline.

[0018] In some embodiments, the power tool further includes a controller, the battery pack and the motor are electrically connected to the controller, the controller is housed within the battery pack receiving housing and a capacitor is integrated at the front end of the controller;

[0019] The battery pack receiving housing includes a lamp mounting base for housing a lighting lamp and at least a portion of the capacitor;

[0020] And / or, a receiving recess is formed between the lamp mounting base and the rear end of the grip housing, which is at least rearwardly recessed, and the receiving recess can accommodate the operator's little finger when the operator grips the grip housing.

[0021] In some embodiments, the lamp mount has an inclined surface facing the grip, the angle between the inclined surface and the front surface of the battery pack receiving housing being between 95° and 175°.

[0022] To achieve the above objectives, this disclosure also provides the following technical solution: a power tool, comprising:

[0023] The housing includes a body housing, a grip housing, and a battery pack receiving housing. The grip housing is located behind the body housing and extends longitudinally in the front-to-back direction. The battery pack receiving housing is disposed at the rear end of the grip housing.

[0024] The motor is housed within the fuselage casing;

[0025] A tool spindle and a working head, wherein the tool spindle is at least partially housed within the machine housing and driven by the motor, and the working head is detachably attached to the tool spindle;

[0026] A battery pack is removably mounted to the battery pack receiving housing to provide power to the motor;

[0027] The battery pack slides from top to bottom to be installed into the battery pack receiving housing; and,

[0028] The power tool is configured such that, when the battery pack vertically supports the power tool on a horizontal surface in a back-to-forward direction, the projection of the center of gravity of the power tool on the horizontal surface is located within the projection of the battery pack receiving housing on the horizontal surface.

[0029] In some embodiments, the power tool is configured such that, after the battery pack is removed and the battery pack receiving housing vertically supports the power tool on the horizontal plane, the projection of the center of gravity of the remaining portion of the power tool after the battery pack is removed onto the horizontal plane lies within the projection of the battery pack receiving housing onto the horizontal plane.

[0030] In some embodiments, the projection of the housing onto the battery pack receiving housing is located in the area below the connection between the grip housing and the battery pack receiving housing.

[0031] In some embodiments, a plane that bisects the battery pack receiving housing in the vertical direction is defined as a bisecting plane, and the projection of the motor shaft of the motor onto the battery pack receiving housing is located between the bisecting plane and the lower end face of the battery pack receiving housing.

[0032] In some embodiments, the angle between the longitudinal axis of the battery pack and the longitudinal centerline passing through the center of the grip housing is less than 90°, and the battery pack receiving housing extends downward from the grip housing and the lower part of the battery pack is further forward than the upper part.

[0033] In some embodiments, the angle between the longitudinal axis of the battery pack and the longitudinal centerline passing through the center of the grip housing is between 80° and 90°.

[0034] In some embodiments, the power tool further includes a connection terminal disposed on the side of the battery pack receiving housing near the working head and configured to be removably electrically connected to the battery pack.

[0035] In some embodiments, the rotation axis of the motor is parallel to the driven axis of the tool spindle, and the rotation axis and the driven axis form a drive driven axis plane; the longitudinal center line passing through the center of the gripping housing intersects the drive driven axis plane.

[0036] In some embodiments, the angle between the longitudinal centerline of the gripping housing and the plane of the driven shaft is between 80° and 110°.

[0037] To achieve the above objectives, this disclosure also provides the following technical solution: an electric tool, comprising:

[0038] The housing includes a fuselage housing and a grip housing, wherein the grip housing is located behind the fuselage housing and extends longitudinally in the front-to-back direction.

[0039] The motor is housed within the fuselage casing;

[0040] A tool spindle, which is at least partially housed within the machine housing and driven by the motor;

[0041] The saw blade is detachably attached to the tool spindle and configured to be operablely movable on the working surface and to process the working surface;

[0042] A guiding component, operably coupled to the housing, guides the movement of the saw blade on the working surface;

[0043] When the guide assembly is coupled to the housing, the angle between the longitudinal centerline passing through the center of the gripping housing and the working surface is between 0° and 30°.

[0044] In some embodiments, when the guide assembly is coupled to the housing, the angle between the longitudinal centerline passing through the center of the gripping housing and the working surface is between 0° and 20°.

[0045] In some embodiments, when the guide assembly is coupled to the housing, the angle between the longitudinal centerline passing through the center of the gripping housing and the working surface is 5°.

[0046] In some embodiments, the saw blade cuts to a depth greater than 0 mm and less than or equal to 22 mm.

[0047] In some embodiments, the housing further includes a battery pack receiving housing disposed at the rear end of the grip housing, wherein the battery pack slides downward from top to bottom to engage with the battery pack receiving housing.

[0048] In some embodiments, the guiding assembly further includes a guide plate and guide wheels mounted on the side of the guide plate, wherein when the guide plate is coupled to the housing, the guide wheels and the saw blade located on the same side of the guide plate are operably rolled on the working surface.

[0049] In some embodiments, the rear surface of the guide plate is located in front of the battery pack receiving housing.

[0050] In some embodiments, the angle between the longitudinal axis of the battery pack and the longitudinal centerline passing through the center of the grip housing is less than 90°, and the battery pack receiving housing extends downward from the grip housing and the lower part of the battery pack is further forward than the upper part.

[0051] The power tool of this application features a battery pack that slides downwards from top to bottom. A first, second, and third gripping groove are provided between the front and rear faces of the gripping housing. The first gripping groove is positioned above the second and third gripping grooves. The second gripping groove is located near the trigger, and the third gripping groove is located near the battery pack receiving housing. Furthermore, in the direction of the longitudinal centerline passing through the center of the gripping housing, the distance between the front and rear faces of the gripping area is greater than or equal to 83 mm and less than 135 mm; the distance from the third point on the third gripping groove, the furthest point from this longitudinal centerline, to the rear face is greater than or equal to 63 mm and less than 105 mm. This design not only facilitates the insertion and removal of the battery pack but also satisfies the need for a compact power tool structure when the operator grips the gripping housing. Simultaneously, it ensures that the operator's thumb and forefinger can be positioned within the first gripping groove, the middle finger within the third gripping groove, and the little finger within the second gripping groove, thus satisfying the operator's gripping needs and providing good operability.

[0052] The above description is only an overview of the technical solution of this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, the preferred embodiments of this disclosure are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0053] Figure 1 A three-dimensional structural diagram of the power tool provided in the embodiments of this application;

[0054] Figure 2 A front view schematic diagram of a power tool after removing the battery pack, provided as an embodiment of this application;

[0055] Figure 3 A three-dimensional structural diagram of the power tool after removing the battery pack, provided as an embodiment of this application;

[0056] Figure 4 A three-dimensional structural diagram of the transmission system in a power tool provided for an embodiment of this application;

[0057] Figure 5 A front view schematic diagram of a power tool after removing the battery pack, working head, and gearbox housing, provided for an embodiment of this application;

[0058] Figure 6 A three-dimensional structural diagram of the power tool after removing the battery pack and part of the grip shell, provided for an embodiment of this application;

[0059] Figure 7 A partial three-dimensional structural diagram of the human-computer interaction component provided in the embodiments of this application;

[0060] Figure 8 A front view schematic diagram of a power tool provided for an embodiment of this application;

[0061] Figure 9 A front view schematic diagram of a power tool after removing the battery pack, provided as an embodiment of this application;

[0062] Figure 10 A three-dimensional structural diagram of a power tool including a guide component provided for an embodiment of this application;

[0063] Figure 11 A front view schematic diagram of a power tool including a guide component provided for an embodiment of this application;

[0064] Figure 12 A partial structural schematic diagram of a power tool including a guide component, provided for embodiments of this application;

[0065] Figure 13 Another schematic diagram of a portion of the structure of a power tool including a guide component, provided for an embodiment of this application;

[0066] Figure 14 A schematic diagram of the structure of the guide component provided in the embodiments of this application;

[0067] Figure 15 A partial structural schematic diagram of the power tool provided in the embodiments of this application.

[0068] 1-Housing; 110-Body housing; 111-Motor housing; 111A-First insertion slot; 111B-Second insertion slot; 112-Gearbox housing

[0069] Body; 112A - Third insertion slot; 120 - Grip housing; 121 - Grip area; 1211 - First grip area; 1212 - Second grip area; 121A - First grip groove; 121B - Second grip groove; 121C - Third grip groove; 122 - Left half shell; 123 - Right half shell; 124 - Protective structure; 130 - Battery pack receiving housing; 131 - First half shell; 132 - Second half shell; 133 - Receiving part; 134 - Connector; 135 - Connecting terminal ; 136-Locking structure; 137-Lamp mounting base; 137A-Sloping surface; 138-Lighting lamp; 130A-Battery pack receiving port; 130B-Guide rail; 130C-Receiving recess; 2-Motor; 21-Motor shaft; 3-Gear assembly; 31-Pin gear; 32-Spur gear; 4-Tool spindle; 5-Working head; 6-Trigger; 7-Locking lever; 8-Electronic switch assembly; 9-Human-machine interface assembly; 90-Electronic control board; 91-Mode switching unit; 911-First button

[0070] Key; 912-Second key; 92-Indicator section; 921-First indicator light; 922-Second indicator light; 93-Identifier section; 10-Battery pack; 11-Controller; 11A-Capacitor; 12-Guide assembly; 121-Guide plate; 121A-Mounting slot; 122-Guide wheel; 123-Connecting assembly; 1231-First connecting section; 12311-Operating section; 12312-First insertion section; 1232-Second connecting section; 12321-Second insertion section; 124-First limiting section; 125-Second limiting section;

[0071] M1 - Front end face; M2 - Rear end face; M3 - Driven shaft plane; M4 - Divided plane; M5 - Working surface; I1 - Longitudinal centerline; I2 - Conductor axis; I3 - Rotation axis; I4 - Driven axis; I5 - Longitudinal axis of the battery pack; I6 - Longitudinal axis of the guide plate; I7 - Extension axis of the mounting slot; L1 - Distance between the front end face and the rear end face; L2 - Distance between the front end face and the receiving part; L3 - Distance between the front end face and the front surface of the battery pack receiving port; L4 - Distance between the front end face and the rear surface of the battery pack receiving housing; L5 - Distance between the first point and the rear end face.

[0072] Distance between; A - First point; B - Second point; a - Angle between the guide axis and the longitudinal centerline; b - Angle between the longitudinal centerline and the drive / driven axis

[0073] The angle between the axial planes; c - the angle between the longitudinal axis of the battery pack and the longitudinal centerline; d - the angle between the inclined plane and the front of the battery pack receiving housing.

[0074] The angle between surfaces; e - the angle between the longitudinal centerline and the working surface; f - the angle between the longitudinal centerline and the working surface. Detailed Implementation

[0075] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0076] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this disclosure described below can be combined with each other as long as they do not conflict with each other.

[0078] Power tools, especially cutting machines, are widely used in various industries. The machine body of a cutting machine usually houses an electric motor as a drive source to rotate the saw blade or grinding disc that serves as the tool head. The grip shell connected to the machine body is used by the operator to hold the machine and operate it to cut or grind metal, wood, or stone, etc.

[0079] For example, when cutting machines are used in the construction and decoration industry, they are often used to cut or grind various bricks, tiles, and floor tiles; to cut concrete walls or groove during pipe installation; and to cut or grind marble, granite, and other stones to ensure their flatness and aesthetics. In wood cutting, they are used to precisely cut planks, strips, plywood, etc., to meet the production requirements of furniture and other wood products. Furthermore, cutting machines can be connected to grout cleaning attachments. These attachments guide the cutting machine, allowing the saw blade to roll within the grout lines of tiles, etc., to remove cement, dirt, and other residues.

[0080] When cutting machines are used in the construction and decoration industry, they are typically used in confined spaces such as interior decoration, small corners of workshops, or hidden areas of buildings for cutting or grinding. In fine processing of wood or metal, small, delicate parts need to be cut or ground, and the machines are suitable for cutting various materials, such as wood, plastic, metal, and tiles, to meet the needs of different users. At the same time, when removing cement, dirt, and other residues from the grout lines of interior tiles, precise operations are required, especially when cleaning residues between tiles on walls or in corners, necessitating improved accessibility of components. However, existing cutting machines are usually large and bulky, making them unsuitable for these applications. Therefore, miniaturization of cutting machines is an urgent problem to be solved.

[0081] A power tool is provided, which is compact and small in size, and can be used in various scenarios. The power tool is described below with reference to the accompanying drawings. Furthermore, for clearer illustration of the power tool, when the operator holds the handle of the power tool to perform operations, the extension direction of the handle is defined as the forward-backward direction, and the vertical direction is perpendicular to the forward-backward and horizontal directions.

[0082] Furthermore, the power tools in this embodiment include a cutting machine. In some embodiments, the power tools may also be spray guns, nail guns, lamps, circular saws, cutting machines, impact wrenches, screwdrivers, electric drills, reciprocating saws, jigsaws, etc.

[0083] This disclosure will be illustrated using a cutting machine as an example. Figure 1 As shown, the power tool includes a housing 1. The housing 1 includes a body housing 110.

[0084] In some embodiments, the fuselage housing 110 includes a motor housing 111 and a gearbox housing 112. Wherein, combined with Figure 4 As shown, the motor housing 111 is used to house the motor 2. The motor 2 is used to provide driving force for the power tool. In some embodiments, the motor 2 can be of various types such as a brushed motor or a brushless motor, and there is no limitation on this. The following description will take a three-phase brushless motor as an example.

[0085] Among them, continue to combine Figure 4 As shown, in some embodiments, the power tool further includes a gear assembly 3, which is housed within a gear housing 112 and meshes with a motor 2 to drive the tool spindle 4 under the drive of the motor 2. The gear assembly 3 includes a pinion 31 mounted on the motor shaft 21 of the motor 2. The gear assembly 3 also includes a spur gear 32 that meshes with the pinion 31.

[0086] The power tool also includes a tool spindle 4, which is partially housed within a gear housing 112. In some embodiments, the motor 2, gear assembly 3, and tool spindle 4 form a transmission system. Specifically, a spur gear 32 is mounted on the end of the tool spindle 4 before the working head 5 is installed. The motor 2 drives a pinion 31 via a motor shaft 21, which in turn drives the spur gear 32, which in turn drives the tool spindle 4. This arrangement causes the tool spindle 4 and the motor shaft 21 to be eccentrically positioned via the pinion 31 and the spur gear 32. In some embodiments, the machine housing 110 may only include a motor housing 111, which houses the motor 2 and part of the tool spindle 4. The tool spindle 4 is directly driven by the motor 2, meaning the motor shaft 21 of the motor 2 directly meshes with the tool spindle 4. The driving method between the motor 2 and the tool spindle 4 is not specifically limited here, but depends on the actual situation.

[0087] In addition, continue to participate in 4 and combine Figure 5 As shown, the rotation axis I3 of motor 2 and the driven axis I4 of tool spindle 4 are parallel, and the rotation axis I3 of motor 2 and the driven axis I4 of tool spindle 4 form a drive driven shaft plane M3. The longitudinal center line I1 passing through the center of the grip housing 120 intersects this drive driven shaft plane M3. In some embodiments, the angle b between the longitudinal center line I1 passing through the center of the grip housing 120 and the drive driven shaft plane M3 is between 80° and 110°. Therefore, during the operation of the power tool, the operator's arm and palm can be at a comfortable angle without applying too much force, thus improving the operating comfort of the power tool.

[0088] Continue to participate Figure 4 and combined Figure 1As shown, the power tool also includes a working head 5. The tool spindle 4 is at least partially housed within the body housing 1 and driven by the motor 2. The working head 5 is detachably attached to the tool spindle 4, and the tool spindle 4 drives the working head 5 to rotate under the drive of the gear assembly 3. The working head 5 may include a grinding disc or a saw blade. When cutting with the power tool is required, the saw blade can be mounted on the tool spindle 4. When grinding with a cutting tool is required, the cutting disc can be removed and the grinding disc mounted on the tool spindle 4. The cutting disc may include a metal cutting disc for cutting steel, stainless steel, aluminum alloy, copper, cast iron, and other metal materials; a stone saw blade for cutting marble, granite, concrete, and other building stone; and a wood saw blade for cutting wood. Furthermore, the saw blade can also be a cutting disc with different diameters such as 76mm, 100mm, 125mm, and 150mm. Moreover, since the tool spindle 4 and the motor shaft 21 are eccentrically arranged via a pinion 31 and a spur gear 32, the cutting depth can be increased when a saw blade is mounted on the tool spindle 4. Grinding discs can include polishing discs, used to polish material surfaces and suitable for brightening surfaces of materials such as metal, stone, and plastic; coarse grinding discs for rough grinding, removing large areas of material or objects with uneven surfaces; and fine grinding discs for fine grinding or delicate finishing, suitable for material surfaces requiring high precision and smoothness. Furthermore, grinding discs can also be available in different diameters such as 76mm, 100mm, 125mm, and 150mm.

[0089] Continue to participate Figure 1 and combined Figure 2 As shown, housing 1 also includes a grip housing 120, which is connected to the main housing 110 and is used for gripping by the operator. The grip housing 120 is located behind the main housing 110 and extends longitudinally in the front-to-back direction. Housing 1 also includes a battery pack receiving housing 130, which is located at the rear end of the grip housing 120 and is used to detachably receive the battery pack 10.

[0090] Continue to refer to 4 and Figure 5 and combined Figure 6 As shown, the power tool also includes a trigger 6, which is disposed on the grip housing 120 and configured to drive the motor 2 in response to a triggering operation by the operator. When the operator operates the trigger 6, the power tool generates a motor drive signal and drives the motor 2 to rotate based on the motor drive signal. The trigger 6 may include one of a trigger, a switch button, or a push-button switch.

[0091] In some embodiments, trigger 6 is a trigger mechanism, which is mounted on the grip housing 120 and located near the main body housing 110. The operator can rotate the motor 2 by holding the grip housing 120 and pressing the trigger mechanism with their index finger. In some embodiments, when trigger 6 is a switch button, the operator can rotate the motor 2 by pressing the switch button. In some embodiments, when trigger 6 is a push-button switch, the push-button switch may have at least two positions: "on" and "off". The operator can rotate the motor by pushing the push-button switch from the "off" position to the "on" position.

[0092] Continue to participate Figure 1 and combined Figure 2 As shown, the power tool also includes a battery pack 10, which is removably mounted to a battery pack receiving housing 130 to supply power to the motor 2. The battery pack 10 slides from top to bottom to be mounted to the battery pack receiving housing 130, establishing a mechanical and electrical connection with the power tool. Furthermore, the power tool also includes a connection terminal 135, which is located on the side of the battery pack receiving housing 130 near the working head 5 and is configured to be removably electrically connected to the battery pack 10.

[0093] The battery pack receiving housing 120 extends downward from the gripping housing 130 and protrudes upward from the machine body housing 110. The working head 5 is mounted on the tool spindle 4 and located on the left side of the machine body housing 120. The connecting terminal 135 is located on the side of the battery pack receiving housing 130 near the working head 5, i.e., the connecting terminal 135 is located at the lower part of the battery pack receiving housing 130. The battery pack receiving housing 130 also includes a locking structure 136 for form-locking and / or force-locking connection with the battery pack 100.

[0094] The battery pack 10 can be available in different specifications such as 12V, 16V, 18V, 20V, 56V, 60V, and 80V, and in different sizes such as 2Ah, 4Ah, 5Ah, 6Ah, 8Ah, 11Ah, and 20Ah. The number of battery packs 10 can be one, two, or more. In other words, the installation method, installation location, and type / specification / capacity / quantity of the battery packs 10 can be configured according to the needs of different power tools, and there are no restrictions on these aspects.

[0095] Continue to participate Figure 8As shown, in some embodiments, the angle c between the longitudinal axis I5 of the battery pack 10 and the longitudinal centerline I1 passing through the center of the grip housing 130 is less than 90°, and the battery pack receiving housing 130 extends downward from the grip housing 120, with the lower part of the battery pack 10 being more forward than the upper part. That is, the battery pack 10 is inserted at an angle relative to the grip housing 120, and the battery pack 10 is tilted backward relative to the grip housing 120. This avoids interference between the operator's wrist or arm and the battery pack 10 when the operator is holding the grip housing 120 to operate the power tool, and also makes inserting and removing the battery pack 10 easier.

[0096] In some embodiments, the angle c between the longitudinal axis I5 of the battery pack 10 and the longitudinal centerline I1 passing through the center of the grip housing 120 is between 80° and 90°. In some embodiments, the angle c between the longitudinal axis I5 of the battery pack 10 and the longitudinal centerline I1 passing through the center of the grip housing 120 is 85°. This results in a smaller tilt angle of the battery pack 10 relative to the grip housing 120, which, while maintaining grip comfort, allows for a reduction in the overall length of the grip housing 120, thus improving the compactness of the power tool.

[0097] Continue to participate Figure 2 As shown, the grip housing 110 has a grip area 121, which is a region for an operator to grip and operate a power tool. The grip area 121 has a front end face M1 and a rear end face M2, and a first grip groove 121A, a second grip groove 121B, and a third grip groove 121C located between the front end face M1 and the rear end face M2. The front end face M1 and the rear end face M2 are both parallel to the vertical direction.

[0098] A first gripping area 1211 and a second gripping area 1212 are formed between the front end surface M1 and the rear end surface M2. A first gripping groove 121A and a third gripping groove 121C are formed within the first gripping area 1211 and are located near the trigger 6. A second gripping groove 121B is located within the second gripping area 1211 and is located near the battery pack receiving housing 130. The first gripping groove 121A is located above the second gripping groove 121B and the third gripping groove 121C. The first gripping groove 121A, the second gripping groove 121B, and the third gripping groove 121C are all arc-shaped structures. The shape of the first gripping groove 121A is adapted to the shape of the operator's thumb and forefinger. When the operator grips the grip housing 120 of the power tool, the operator's thumb and forefinger are engaged in the first gripping groove 121A, with the operator's thumb, index finger, and middle finger located in the first gripping area 1211, and the middle finger accommodated in the third gripping groove 121C. The operator's ring finger and little finger are located in the second gripping area 1212, and the operator's little finger is accommodated in the second gripping groove 121B.

[0099] In this application, the axis passing through the center of the gripping housing 120 is defined as the longitudinal centerline I1. Since the gripping housing 120 extends in the front-to-back direction, the longitudinal centerline I1 is the axis passing through the center of the gripping housing 120 and extending in the front-to-back direction. Furthermore, during the process of the operator's hand gripping the first gripping groove 121A, the point of the first gripping groove 121A farthest from the longitudinal centerline I1 determines whether the operator's hand gripping the first gripping groove 121A can be engaged. Therefore, the plane parallel to the vertical direction where this point is located is defined as the front end face M1 of the gripping area 121. That is, the intersection point of the front end face M1 and the first gripping groove 121A can be defined as the first point A, where the front end face M1 passes through the first point A, and this first point A is farthest from the longitudinal centerline I1. During the process of the operator's middle finger being inserted into the second gripping groove 121B, the point on the second gripping groove 121B that is farthest from the longitudinal center line I1 determines whether the operator's little finger can be successfully inserted into the second gripping groove 121B. Therefore, the plane parallel to the vertical direction where this point is located is taken as the rear end surface M2 of the gripping area 121. That is, the intersection point of the rear end surface M2 and the second gripping groove 121B can be defined as the second point B. The rear end surface M2 passes through the second point B, and this second point B is the farthest from the longitudinal center line I1. The point on the third gripping groove 121C that is farthest from the longitudinal center line I1 is defined as the third point C.

[0100] Continue to participate Figure 2 As shown, in some embodiments, a protective structure 124 is provided on the grip housing 120 behind the trigger 6. This protective structure 124 supports the trigger 6, and a third gripping groove 121C is formed between the protective structure 124 and the longitudinal circumferential surface of the grip housing 120 to accommodate the operator's middle finger when the operator grips the grip housing. In addition, the protective structure 124 also protects the trigger 6. Due to the obstruction of the protective structure 124, the area of ​​the grip housing 120 where the protective structure 124 is located cannot be gripped. Therefore, the operator's middle finger can only grip the third gripping groove 121C behind the protective structure 124, that is, the area behind the rear surface of the protective structure 124. Therefore, the third point C is the point located on the rear surface of the protective structure 124 that is farthest from the longitudinal centerline I1.

[0101] To ensure grip comfort, the rear surface of the guard structure 124, near the bottom, extends forward, and the lowest point of the guard structure 124 is at the front. Therefore, the third point C is the point on the lowest point of the guard structure 124 and is furthest from the longitudinal centerline I1. In some embodiments, the rear surface of the guard structure 124 is a plane parallel to the front face M1, and the third point C is any point on the rear surface of the guard structure 124. In some embodiments, the grip housing 120 may not have a guard structure 124. In this case, the third point C is a point on the front surface of the grip housing 120 behind the trigger 6, and this third point C is furthest from the longitudinal centerline I1.

[0102] Specifically, along the longitudinal centerline I1, the distance L1 between the front end face M1 and the rear end face M2 is greater than or equal to 87 mm and less than 135 mm, and the distance L5 between the third point C and the rear end face M2 is greater than or equal to 67 mm and less than 105 mm. The distance L1 between the front end face M1 and the rear end face M2 is the length of the line parallel to the longitudinal centerline I1 between them. The distance L5 between the third point C and the rear end face M2 is the length of the line parallel to the longitudinal centerline I1 between the third point C and the rear end face M2.

[0103] In this configuration, the battery pack 10 of the power tool slides downwards from top to bottom. A first gripping groove 121A, a second gripping groove 121B, and a third gripping groove 121C are provided between the front end face M1 and the rear end face M2 of the gripping housing 120. The first gripping groove 121A is positioned above the second gripping groove 121B and the third gripping groove 121C. The second gripping groove 121B is located near the trigger 6, and the third gripping groove 121C is located near the battery pack receiving housing 130. Furthermore, in the direction of the longitudinal centerline I1 passing through the center of the gripping housing 120, the distance between the front end face M1 and the rear end face M2 of the gripping area 121 is greater than or equal to 87 mm and less than 135 mm. The distance between the third point C on the third gripping groove 121C, which is furthest from the longitudinal centerline I1, and the rear end face M2 is greater than or equal to 67 mm and less than 105 mm. This design not only makes the battery pack easy to insert and remove, but also ensures that when the operator grips the housing 120, it meets the requirement of a compact power tool structure while ensuring that the operator's thumb and forefinger can be inserted into the first gripping groove 121A, the middle finger can be accommodated in the third gripping groove 121C, and the little finger can be accommodated in the second gripping groove 121B, thus satisfying the operator's gripping needs and providing good operability.

[0104] Furthermore, in some embodiments, the distance L1 between the front end face M1 and the rear end face M2 is greater than or equal to 85 mm and less than 130 mm; in some embodiments, the distance between the front end face M1 and the rear end face M2 is greater than or equal to 88 mm and less than 125 mm; in some embodiments, the distance between the front end face M1 and the rear end face is greater than or equal to 89 mm and less than 120 mm; in some embodiments, the distance between the front end face M1 and the rear end face M2 is greater than or equal to 90 mm and less than 115 mm.

[0105] In some implementations, the reference Figure 3As shown, the grip housing 120 includes a left half-shell 122 and a right half-shell 123, which together form a half-grip housing 120 to facilitate the assembly and maintenance of power tools. In some embodiments, the left half-shell 122 and right half-shell 123 are secured with screws. In some embodiments, the grip housing 120 may also be a single, cylindrical structure; the specific structure of the grip housing 120 is not limited here.

[0106] Continue to participate Figure 3 and Figure 2 and combined Figure 6 As shown, the battery pack receiving housing 130 includes a first half-shell 131, a second half-shell 132, and a receiving portion 133. The receiving portion 133 is located on the first half-shell 131 and the second half-shell 132, and is used to engage with the connecting portion 134 of a power tool to connect the first half-shell 131 and the second half-shell 132. The receiving portion 133 includes a first receiving portion and a second receiving portion, and a connector 134 is used to engage with the first receiving portion and the second receiving portion to connect the first half-shell and the second half-shell. Furthermore, one of the first receiving portion and the second receiving portion has a screw hole, and the other has a through hole. The connector 134 includes a screw, which is inserted into the screw hole and extends into the through hole to connect the first receiving portion and the second receiving portion. Additionally, the receiving portion 133 is located at the upper end of the battery pack receiving housing 130. The left half-shell 122 and the first half-shell 131 are integrally formed, and the right half-shell 123 and the second half-shell 132 are integrally formed. That is, the interface between the left half-shell 122 and the right half-shell 123 overlaps with the interface between the first half-shell 131 and the second half-shell 132, thus simplifying the process. Figure 2 As shown, in the direction parallel to the longitudinal centerline, the distance L2 between the front end face M1 and the receiving part 133 is greater than or equal to 89 mm. In some embodiments, the distance L2 between the front end face M1 and the receiving part 133 is greater than or equal to 91 mm; greater than or equal to 92 mm; or greater than or equal to 93 mm.

[0107] In addition, continue to participate Figure 1 and Figure 2 and combined Figure 3As shown, the battery pack receiving housing 130 includes a battery pack receiving port 130A for receiving the battery pack 10. In a direction parallel to the longitudinal centerline I1, the distance L3 between the front end face M1 and the front surface of the battery pack receiving port 130A is greater than or equal to 91 mm and less than 155 mm, thus making the power tool compact. In some embodiments, the distance L3 between the front end face M1 and the front surface of the battery pack receiving port 130A is greater than or equal to 92 mm and less than 150 mm; in some embodiments, the distance between the front end face M1 and the battery pack receiving port 130A is greater than or equal to 94 mm and less than 145 mm; in some embodiments, the distance between the front end face M1 and the battery pack receiving port 130A is greater than or equal to 95 mm and less than 145 mm.

[0108] Furthermore, in the direction parallel to the longitudinal centerline I1, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 108 mm and less than 175 mm, thus making the power tool compact. In some embodiments, in the direction parallel to the longitudinal centerline I1, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 110 mm and less than 172 mm; the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 112 mm and less than or equal to 168 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 114 mm and less than or equal to 164 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 114 mm and less than or equal to 160 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 116 mm and less than or equal to 158 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 120 mm and less than or equal to 154 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 122 mm and less than or equal to 150 mm. In some embodiments, the distance L4 between the front end face M1 and the rear surface of the battery pack receiving housing 130 is greater than or equal to 123 mm and less than or equal to 148 mm. This further achieves the compactness of the power tool while still satisfying the grip requirements.

[0109] Continue to participate Figure 3As shown, the battery pack receiving housing 130 includes at least one guide rail 130B for guiding the battery pack 10 when it is detachably mounted on the battery pack receiving housing 130. In some embodiments, two guide rails 130B are provided parallel to each other at the rear of the battery receiving housing 130. Each guide rail 130B has a guide axis I2 parallel to the insertion direction of the battery pack 10, and the angle α between the guide axis I2 and the longitudinal centerline I1 passing through the center of the holding housing 120 is between 80° and 90°. In some embodiments, the angle α between the guide axis I2 and the longitudinal centerline I1 passing through the center of the holding housing 120 is 85°.

[0110] In addition, continue to participate Figure 6 As shown, in some embodiments, the power tool also includes a locking lever 7, which is disposed on the grip housing 120 and located near the trigger 6. The locking lever 7 is movable in the left-right direction between a locked position and an unlocked position. When the locking lever 7 is in the locked position, the trigger 6 cannot be triggered by the operator to drive the motor 2 to rotate; when the locking lever 7 is in the unlocked position, the trigger 6 can be triggered by the operator to drive the motor 2 to rotate.

[0111] In some embodiments, the power tool may further include a forward / reverse switching lever disposed on the grip housing 120 and near the trigger 6. The lever has three positions: forward, reverse, and neutral. When the operator operates the lever to the forward position and activates the trigger 6, the drive motor 2 and the working head 5 rotate in the forward direction. When the operator operates the lever to the forward position and activates the trigger 6, the drive motor 2 and the working head 5 rotate in the reverse direction. When the operator operates the lever to the neutral position, the trigger 6 cannot drive the motor 2 to rotate.

[0112] Furthermore, in some embodiments, at least one of the trigger 6 and the locking lever 7 or the forward / reverse switching lever is located in an area that can be operated simultaneously by one hand, and is located within the first grip area 121A, so as to make the power tool compact. When the operator grips the grip housing 120 to operate the power tool, the operator's index finger is used to operate the trigger 6, and the operator's thumb is used to operate the locking lever 7 and / or the forward / reverse switching lever.

[0113] In some implementations, continue to participate Figure 6As shown, the power tool also includes an electronic switch assembly 8, which includes a switch housing and an electronic switch housed within it. The electronic switch assembly includes a first electronic switch for driving the motor 2. When the operator operates the trigger 6, it activates the first electronic switch to generate a motor drive signal. When the power tool includes a forward / reverse switching lever, the electronic switch assembly 8 also includes a second electronic switch. When the operator operates the forward / reverse switching lever, it activates the second electronic switch, generating a forward / reverse switching signal. The power tool then drives the motor 2 to rotate forward or backward according to this forward / reverse switching signal and the motor drive signal.

[0114] Furthermore, a human-machine interface component 9 is located near the intersection of the grip housing 120 and the body housing 110. The operator uses this component to switch and / or display information about the power tool. This information includes, for example, single or combined information such as: the rotation direction of the motor 2, the motor speed, the power tool's on / off status, the on / off status and brightness level of the lighting component, the remaining battery power, Bluetooth connection status, the motor's lock / unlock status, and the power tool's operating mode (including speed mode). In some embodiments, the human-machine interface component 9 may also include a display screen. This screen allows the operator to select and / or display power tool information. The operator can select and display power tool information by touching the screen, selecting information via an external device, or displaying the information on the screen. Because the human-machine interface component 9 is located near the intersection of the grip housing 120 and the body housing 110, the operator can directly observe the power tool information, resulting in excellent visibility.

[0115] In addition, in some embodiments, the human-machine interface component 9 includes a mode switching unit 91, which is used to switch the rotation direction and / or speed mode of the motor 2 and the working head 5.

[0116] The mode switching unit 91 can be one of a button, a knob, or a push button. When the switching unit is a button, mode switching can be achieved through one or a combination of button operation methods. Button operation methods can include single button press, multiple button press, short press, long press, etc. For example, a user can press the button once to switch modes, or press and hold the button for more than 5 seconds to switch modes.

[0117] When the mode switching unit 91 is a toggle switch, mode switching can be achieved through one or a combination of toggle switch operation methods. Toggle switch operation methods include at least single toggle, unidirectional toggle, multiple toggle, and multidirectional toggle. For example, the toggle switch has positions A, B, and C. If the power tool toggle switch is currently in position B, it can be toggled once to position A to switch modes, or it can be toggled once to position A and then toggled back to position B to switch modes. The direction of force applied when the operator toggles the toggle switch from position B to position A and from position B to position C are different.

[0118] When the mode switching unit 91 is a knob, the knob can have multiple rotation positions, each rotation position corresponding to a braking mode of the power tool. The braking mode can be switched by rotating the knob to the rotation position corresponding to the desired braking mode.

[0119] Switching the power tool's mode via buttons, toggle switches, and knobs facilitates user operation and improves the ease of mode switching. This embodiment will be described below using the mode switching unit 91 as a button.

[0120] like Figure 5 and combined Figure 7 As shown, the mode switching unit 91 includes a first button 911, which the operator operates to switch the forward and reverse directions of the motor 2. The mode switching unit 91 also includes a second button 912, which the operator operates to switch speed modes. The speed modes include speed mode 1, speed mode 2, and speed mode 3, with the motor rotation speeds corresponding to speed modes 1, 2, and 3 increasing sequentially. Furthermore, the operator selects the rotation direction of the motor 2 by operating the first button 911 and selects the rotation speed of the motor 2 by operating the second button 912. Then, the operator operates the trigger unit 91 to drive the motor 2 to operate at the selected rotation speed and direction. In this embodiment, because multiple speed modes are provided, the power tool can be used in multiple scenarios. Furthermore, by integrating the motor rotation direction switching into the human-machine interface component 9, space is saved, making the power tool more compact.

[0121] Continue to participate Figure 7As shown, the human-machine interaction assembly 9 further includes an indicating portion 92, which is used to indicate that the speed mode and / or the motor rotation direction mode selected via the mode switching portion 91 is selected. The indicating portion 92 includes an indicator light, which is lit to indicate that the speed mode of the motor 2 and / or the rotation direction mode of the motor 2 is selected. As shown in the figure, the indicator light 92 includes two first indicator lights 921, one of the two first indicator lights 921 is lit to indicate that the forward rotation direction mode of the motor is selected, and the other is lit to indicate that the reverse rotation direction mode of the motor 2 is selected. In addition, there are three second indicator lights 922, which are in one-to-one correspondence with the 1st gear speed mode, the 2nd gear speed mode and the 3rd gear speed mode respectively. When one of the second indicator lights 921 is lit, it indicates that the corresponding speed mode is selected. Of course, in some embodiments, the indicator light 92 can also emit light of different colors to indicate the selected mode.

[0122] In addition, as shown in Figure 6 , the human-machine interaction assembly 9 further includes an identification portion 93, which is arranged in one-to-one correspondence with the indicator lights 92. The identification portion 93 may include the numbers "1", "2", "3" to identify the 1st gear speed mode, the 2nd gear speed mode and the 3rd gear speed mode. The identification portion 93 may also include the letters "F" and "R" to identify the forward rotation direction mode and the reverse rotation direction mode. Of course, in some embodiments, the identification portion 93 may also be configured with other identifiers to identify the modes of the power tool, for example, using Chinese characters "Forward" and "Reverse" to identify the forward rotation direction mode and the reverse rotation direction mode.

[0123] With continued reference to Figure 6 , the human-machine interaction assembly 9 further includes a human-machine interaction circuit board 90. The above-mentioned mode switching portion 91 and indicating portion 92 are integrated on the electric control board 90 and are electrically connected to the electric control board 90.

[0124] In addition, in some embodiments, the trigger 6 and at least one of the human-machine interaction assembly 9, the locking lever 7 or the forward / reverse switching lever are disposed in an area operable by one hand of the operator, and are disposed in the first gripping area, so as to make the power tool compact. When the operator holds the gripping housing 120 to operate the power tool, the index finger of the operator is used to operate the trigger 6, and the thumb of the operator is used to operate the human-machine interaction assembly 9, the locking lever 7 and / or the forward / reverse switching lever.

[0125] The power tool also includes a controller 11, with the battery pack 10 and motor 2 electrically connected to the controller 11. The controller 11 is housed within the battery pack receiving housing 130, and a capacitor 11A is integrated at the front end of the controller 11. Furthermore, the controller 11 is also electrically connected to an electronic switch assembly 8 and a human-machine interface assembly 9. Specifically, the controller 11 includes a control board and components such as a microprocessor (MCU), a motor drive circuit, and capacitors integrated on the control board. The motor drive circuit consists of multiple power switching elements (typically MOSFETs or IGBTs). The controller 11 receives control signals such as motor forward / reverse signals, motor drive signals, and motor speed mode signals transmitted from the human-machine interface assembly 9 and / or the electronic switch assembly 8, and controls the rotation direction and speed of the motor 2 according to these control signals via the motor drive circuit. In some embodiments, the controller 11 also controls the power tool to display single or combined information such as power on / off status, lighting component on / off status and brightness level, battery pack remaining power information, Bluetooth connection status, motor 2 lock / unlock status, and power tool operating mode (including speed mode).

[0126] Continue to participate Figure 2 and combined Figure 6 As shown, the battery pack receiving housing 130 includes a lamp mounting base 137 for housing a lamp 138 and at least a portion of a capacitor 11A. The lamp 138 is mounted within the lamp mounting base 137 and illuminates forward. The capacitor 11A is mounted on the front surface of the control panel and housed in the space behind the lamp in the lamp mounting base 137. A receiving recess 130C, at least rearwardly recessed, is formed between the lamp mounting base 137 and the rear end of the grip housing 120, wherein a second grip groove 121B constitutes a part of the receiving recess 130C. When an operator grips the grip housing 120, the receiving recess 130C can accommodate the operator's little finger. Because the lamp mounting base 137 houses both the lighting lamp 138 and the capacitor 11A, its height is relatively high. If the front surface of the lamp mounting base 137 were flush with the interface between the grip housing 120 and the battery pack receiving housing 130, the battery pack receiving housing 130 would inevitably be thicker, resulting in an excessively long grip area 121, which would negatively impact the compactness of the power tool. Therefore, by providing a recessed receiving portion 130C at least rearward between the lamp mounting base 137 and the rear end of the grip housing 120, the operator's little finger is received when gripping the grip housing 120, thereby making the power tool more compact. Figure 2 As shown, the lamp mounting base 137 has a bevel 137A facing the grip portion 120, and the angle d between the bevel 137A and the front surface of the battery pack receiving housing 130 is between 95° and 175°. This allows for comfortable operation without interference from the bevel 137A when the operator holds the grip housing 120.

[0127] Furthermore, in existing technologies, when power tools are stored unused, operators typically support them directly on a horizontal surface along the front-to-back direction. This often results in the working head 5 contacting the surface of the support, such as a table, causing wear on both the working head and the support surface, and making them inconvenient to retrieve. Simultaneously, some operators prefer to support power tools vertically on a horizontal surface, with the rear surface of the battery pack in contact with the support, such as a table. However, for power tools whose battery packs slide vertically, supporting them vertically on a horizontal surface in the front-to-back direction usually results in the tool not standing upright but rather tipping over, making the storage of the power tool unsafe.

[0128] Therefore, a power tool is provided to solve the above problem. Specifically, see... Figure 1 and combined Figure 8 As shown, the power tool includes a housing 1, which includes a body housing 110, a grip housing 120, and a battery pack receiving housing 130. The grip housing 120 is located behind the body housing 110 and extends longitudinally in the front-to-back direction. The battery pack receiving housing 130 is disposed at the rear end of the grip housing 120. The power tool also includes a motor 2, which is housed within the body housing 110.

[0129] Continue to participate Figure 8 and combined Figure 4 As shown, the power tool also includes a tool spindle 4 and a working head 5. The tool spindle 4 is at least partially housed within the body housing 110 and is driven by the motor 2. The working head 5 is detachably attached to the tool spindle 4. The power tool also includes a battery pack 10, which is removably mounted to a battery pack receiving housing 130 to provide power to the motor 2. The battery pack 10 slides from top to bottom to be mounted in the battery pack receiving housing 130. For detailed information on the structure and positional relationships of the housing 1, motor 2, tool spindle 4, working head 5, and battery pack 10, please refer to [link to relevant documentation]. Figures 1 to 8 As mentioned above, I will not repeat myself here.

[0130] The power tool is configured such that, when the battery pack 10 vertically supports the power tool on a horizontal surface in a back-to-forehead direction, the projection of the power tool's center of gravity G1 onto the horizontal surface lies within the projection of the battery pack receiving housing 130 onto the horizontal surface. This means that when the power tool is supported on the horizontal surface, the rear surface of the battery pack 10 contacts the horizontal surface, resulting in a vertically positioned power tool, i.e., the back-to-forehead direction of the power tool is perpendicular to the horizontal surface. When the power tool is supported on a support such as a table, this horizontal surface is the surface of the support, such as the table, that is parallel to the horizontal surface and used to support the power tool.

[0131] In this configuration, for a power tool whose battery pack 10 slides from top to bottom to be installed into the battery pack receiving housing 130, the battery pack 10 vertically supports the power tool on a horizontal plane in a front-to-back direction, meaning the power tool is placed vertically with the rear surface of the battery pack 10 in contact with the horizontal plane of the support. The projection of the power tool's center of gravity G1 onto the horizontal plane lies within the projection of the battery pack receiving housing 130 onto the horizontal plane. This ensures the power tool stands upright and will not tip over, making it safe to place and easy to retrieve.

[0132] like Figure 9 As shown, in some embodiments, after the battery pack 10 is removed, and the battery pack receiving housing 130 vertically supports the power tool on a horizontal surface in the back-to-back direction, the projection of the center of gravity G2 of the remaining part of the power tool after removing the battery pack 10 onto the horizontal surface lies within the projection of the battery pack receiving housing 130 onto the horizontal surface. Here, "the battery pack receiving housing 130 vertically supports the power tool on a horizontal surface in the back-to-back direction" can be understood as follows: when the power tool after removing the battery pack 10 is supported on the horizontal surface, the rear surface of the battery pack receiving housing 10 is in contact with the horizontal surface, making the power tool vertically positioned, i.e., the back-to-back direction of the power tool after removing the battery pack 10 is perpendicular to the horizontal surface. When the power tool after removing the battery pack 10 is supported on a support such as a table, the horizontal surface is the surface of the support such as the table that is parallel to the horizontal surface and used to support the power tool.

[0133] In this configuration, the battery pack receiving housing 130 vertically supports the power tool (after removing the battery pack 10) on a horizontal plane, meaning the power tool is placed vertically with the rear surface of the battery pack receiving housing 130 in contact with the horizontal plane. Furthermore, the projection of the center of gravity G2 of the remaining portion of the power tool after removing the battery pack 10 onto the horizontal plane lies within the projection of the battery pack receiving housing 130 onto the horizontal plane. Therefore, the power tool will not tip over during the process of removing the battery pack 10 to place the power tool or changing the battery pack 10 of the power tool, making placement convenient and use safe.

[0134] Combination Figure 6 As shown, in an optional embodiment, the projection of the housing 110 onto the battery pack receiving housing 130 is located in the area below the connection between the grip housing 120 and the battery pack receiving housing 130. This further increases the stability of the power tool when placed upright, preventing it from tipping over.

[0135] Furthermore, the plane that bisects the battery pack receiving housing in the vertical direction is defined as the bisecting plane M4. The projection of the motor shaft 21 of motor 2 onto the battery pack receiving housing 130 is located between the bisecting plane M4 and the lower end face of the battery pack receiving housing 130. This ensures the stability of the power tool when it is placed upright, while allowing the motor 2 to be positioned lower, thereby increasing the cutting depth of the power tool when the working head 5 is a saw blade.

[0136] In addition, power tools can be used in construction, engineering, and manufacturing to clean dust, dirt, or other debris that may accumulate in joints and crevices, keeping these areas clean and preventing contamination from affecting the structure. For example, in the construction industry, they are used to clean gaps between walls, tiles, or other materials. Alternatively, they can be used to create grooves on the surface of workpieces such as wood.

[0137] The following description, in conjunction with the accompanying drawings, describes the power tool used for cleaning or creating grooves on a workpiece. Since this power tool is used for cleaning or creating grooves on a workpiece, the working head 5 is a saw blade; the following description uses a saw blade as the working head. (See attached diagram.) Figure 10 and Figure 11 and combined Figure 1 and Figure 4 As shown, the power tool includes a housing 1, which comprises a body housing 110 and a grip housing 120. The grip housing 120 is located behind the body housing 110 and extends longitudinally in the front-rear direction. The power tool also includes a motor 2, which is housed within the body housing 110. The power tool also includes a tool spindle 4, which is at least partially housed within the body housing 110 and driven by the motor 2. Furthermore, the power tool includes a saw blade 5, which is detachably attached to the tool spindle 4 and configured to operably move on a work surface and process the work surface. Specifically, when the power tool is used for grout cleaning of tiled floors, the work surface is the surface of the tiled floor; when the power tool is used for grout cleaning of wall tiles, the work surface is the surface of the wall tiles; when the power tool is used for grooving wood, the work surface is the surface of the wood. That is, the work surface is the surface of the workpiece acted upon by the power tool. Furthermore, the structure, position, and angular relationships of the saw blade, housing 1, motor 2, and tool spindle 4 are detailed in the appendix. Figures 1-8 As mentioned above, I will not repeat myself here.

[0138] Furthermore, in some embodiments, the power tool further includes a battery pack 10, which is removably mounted to the battery pack receiving housing 130 to supply power to the motor 2. The battery pack 10 may be, for example, the external battery pack as shown in the figure, and the battery pack 10 slides from top to bottom to be mounted to the battery pack receiving housing 130. The connection relationship between the battery pack 10 and the battery pack receiving housing 130, as well as the angular and positional relationship between the battery pack 10 and the rest of the power tool excluding the battery pack 10 are as described above, and will not be repeated here. In some embodiments, the battery pack 10 may also be a plug-in battery pack, that is, the battery pack 10 is at least partially inserted into the interior of the grip housing 120. In addition, in some embodiments, the power tool may also be an AC power tool, that is, the power tool is not equipped with a battery pack but is powered by mains electricity, which is not specifically limited further.

[0139] Furthermore, the power tool further includes a guide assembly 12, which is operably coupled to the housing 1 to guide the movement of the saw blade on the working surface. The guide assembly 12 includes a guide plate 121, which is operably coupled to the housing 1. The guide plate 121 is rectangular in shape, and the longitudinal axis I6 of the guide plate 121 is in the same direction as the longitudinal centerline I1 passing through the center of the grip housing 120. In some embodiments, the shape of the guide plate 121 may also be other types, such as a square, which is not specifically limited herein, and is subject to actual requirements.

[0140] In some embodiments, as shown in conjunction with 14, the guide plate 121 is provided with a mounting groove 121A. When the guide plate 121 is coupled to the housing 1, the main body housing 110 is at least partially disposed in the mounting groove 121A. Since the mounting groove 121A for mounting the main body housing 110 is provided on the guide plate 121, displacement of the main body housing 110 relative to the guide plate 121 can be avoided. At the same time, since the main body housing 110 is at least partially disposed in the mounting groove 121A, the center of gravity of the power tool is lower, so that the center of gravity is more stable and the power tool is not prone to shaking when used for joint cleaning. The shape of the mounting groove 121A is adapted to the shape of the main body housing 110, so as to further avoid the displacement of the main body housing 110, and make the connection between the housing 1 and the guide plate 121 more stable. In addition, as Figure 15 shown, the extension axis I7 of the mounting groove 121A and the longitudinal axis I6 of the guide plate 121 are perpendicular to each other. The rotation axis I3 of the motor shaft 21 of the motor 2 is parallel to the extension axis I7 of the mounting groove 121A, that is, perpendicular to the longitudinal axis I6 of the guide plate 121.

[0141] Reference Figure 12 and Figure 13 in conjunction with Figure 14As shown, the power tool also includes a connecting assembly 123, which allows for detachable coupling between the body housing 110 and the guide plate 121. When the body housing 110 and the guide plate 121 are coupled via the connecting assembly 123, the power tool can be used as a grout-cleaning tool to remove residue from crevices in boards or tiles. When the body housing 110 is detached from the guide plate 121, the power tool can be used as a standalone cutting tool, for example, for cutting tiles or wood. Because the body housing 110 and the guide plate 121 can be detachably coupled via the connecting assembly 123, the power tool can be used not only for grout cleaning of boards and tiles but also for cutting, meaning one power tool can be used in multiple scenarios, enhancing its versatility.

[0142] Continue to participate Figure 12 and Figure 13 and combined Figure 14 As shown, the connecting assembly 123 includes a first connecting portion 1231, which includes an operating portion 12311 and a first insertion portion 12312, connected together. The connecting assembly 123 also includes a second connecting portion 1232, which includes a second insertion portion 12321. The first connecting portion 1231 is movably mounted on the guide plate 121, and the second connecting portion 1232 is fixedly mounted on the guide plate 121. The first connecting portion 1231 and the second connecting portion 1232 are located on opposite sides of the mounting groove 121A. (See reference...) Figure 5 As shown, the fuselage housing 110 includes a motor housing 111 and a gearbox housing 112, wherein the motor housing 111 is provided with a first receiving slot 111A and a second receiving slot 111B.

[0143] When coupling the fuselage housing 110 to the guide plate 121, the operating unit 12311 can be operated first to move the first insertion part 12312 away from the mounting groove 121A, thereby making room for the fuselage housing 110. Then, the fuselage housing 110 is placed in the mounting groove 121A, and the second insertion part 12321 is aligned and inserted into the second insertion groove 111B. Finally, the operating unit 12311 is operated to insert the first insertion part 12312 into the first insertion groove 111A, thus completing the coupling between the fuselage housing 110 and the guide plate 121. In some embodiments, the first insertion part 12312 can be inserted into the first insertion groove 111A by pushing the operating unit 12311 towards the mounting groove 121A. In some embodiments, an elastic element can be provided so that when the housing 110 is placed in the mounting groove 121A, the operating part 12311 is released, causing the operating part 12311 and the first insertion part 12312 to move toward the mounting groove 121A under the reset action of the elastic element, so that the first insertion part 12312 is inserted into the first insertion groove 111A.

[0144] Continue to participate Figure 14 As shown, the guide assembly 12 also includes a first limiting part 124, which is fixedly mounted on the guide plate 121 on the side of the mounting groove 121A, and is used to limit the first insertion part 12312 in the vertical direction. Specifically, the first insertion part 12312 is located above the first limiting part 124, and the operator operates the operating part 12311 to move the first insertion part 12312 within the space below the first limiting part 124. In addition, in some embodiments, the first connecting part 1231 and the first limiting part 124 are located at the front of the housing 110, and the second connecting part 1232 is located at the rear of the housing 110, so as to avoid interference with the grip of the housing 120 when operating the operating part 12311, and to facilitate operation.

[0145] Continue to participate Figure 14 and combined Figure 15 As shown, the guide assembly 12 also includes a second limiting part 125, which is disposed in the mounting groove 121A. The gearbox housing 112 is also provided with a third insertion groove 112A. When coupling the body housing 110 with the guide plate 121, the second limiting part 125 can be inserted into the third limiting groove 112A to further limit the housing 1 in the left and right directions.

[0146] Continue to participate Figure 10 As shown, the guide assembly 12 also includes guide wheels 122 mounted on the side of the guide plate 121. When the guide plate 121 is coupled to the housing 1, the guide wheels located on the same side of the guide plate and the saw blade can operably roll on the working surface. Specifically, the guide wheels 122 and the saw blade roll within the same gap. The guide wheels 122 are mounted on one side of the guide plate 121, and the number of guide wheels 122 can be one or more. When the number of guide wheels 122 is two or more, adjacent guide wheels 122 are spaced apart. A greater number of guide wheels 122 results in smoother guidance, but too many guide wheels 122 lead to an excessively long guide plate 121; therefore, the number of guide wheels 121 needs to be set within a suitable range. In this embodiment, there are two guide wheels 121. In some embodiments, the number of guide wheels 121 can also be three or one, etc. The number of guide wheels 121 is not specifically limited here. When the guide plate 121 is coupled to the housing 1, the rear surface of the guide plate 121 is located in front of the battery pack receiving housing 130, so as to avoid interference between the battery pack receiving housing 130 and the guide plate 121 in the front-back direction.

[0147] Continue to participate Figure 11As shown, technicians discovered that when the guide assembly 12 is coupled to the housing 1, and the angle f between the longitudinal centerline I1 passing through the center of the grip housing 120 and the working surface M5 is between 0° and 30°, the operator, when operating the power tool for cleft cleaning, not only meets the ergonomic definition of the angle range between the longitudinal axis of the arm and the longitudinal axis of the palm, but also enjoys a longer distance when moving the power tool forward or backward around the operator while maintaining comfort for the arm and hand. That is, when the angle f between the longitudinal centerline I1 passing through the center of the grip housing 120 and the working surface M5 is between 0° and 30°, the power tool is comfortable to hold. Specifically, as... Figure 11 As shown, the virtual line I8 is a straight line parallel to the working surface M5, and the included angle f can be represented by the angle between the virtual line L6 and the longitudinal center line I1 passing through the center of the gripping housing 120.

[0148] Furthermore, in some embodiments, the angle f between the longitudinal centerline I1 passing through the center of the grip housing and the working surface M5 is between 0° and 20°. Additionally, in some embodiments, after research by those skilled in the art, the angle f between the longitudinal centerline I1 passing through the center of the grip housing and the working surface M5 is 5°, provided that it satisfies the requirements of comfortable grip, compact structure, good overall sloping profile, and that the power tool does not tip over when placed vertically. Detailed design of the power tool can be found in [reference needed]. Figures 1-9 As mentioned above, I will not elaborate further here.

[0149] Furthermore, in some embodiments, the saw blade's cutting depth is greater than 0 mm and less than or equal to 22 mm. This cutting depth not only makes the power tool suitable for cleaning scenarios, but also allows it to be used in cutting scenarios where the power tool is not used for cutting and is only used for cutting.

[0150] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0151] The above embodiments merely illustrate several implementation methods of this disclosure, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A power tool, characterized in that, include: The housing (1) includes a body housing (110), a grip housing (120) and a battery pack receiving housing (130). The grip housing (120) is located at the rear end of the body housing (110) and extends longitudinally in the front-rear direction. The battery pack receiving housing (130) is disposed at the rear end of the grip housing (120). The motor (2) and trigger (6) are housed in the housing (110) and the trigger (6) is disposed on the grip housing (120) and configured to drive the motor (2) in response to a triggering operation by an operator. The tool spindle (4) and the working head (5) are provided, wherein the tool spindle (4) is at least partially housed in the housing (110) and driven by the motor (2), and the working head (5) is detachably attached to the tool spindle (4). A battery pack (10) is removably mounted to the battery pack receiving housing (130) to provide power to the motor (2), the battery pack (10) sliding from top to bottom to be mounted to the battery pack receiving housing (130); The gripping housing (120) has a gripping area (121), which has a front end face (M1) and a rear end face (M2) and a first gripping groove (121A), a second gripping groove (121B) and a third gripping groove (121C) located between the front end face (M1) and the rear end face (M2). The first gripping groove (121A) is located above the second gripping groove (121B) and the third gripping groove (121C). The third gripping groove (121C) is located near the trigger (6). The second gripping groove (121B) is located near the battery pack receiving housing (130). The front end face (M1) and the rear end face (M2) are both parallel to the vertical direction. The axis passing through the center of the gripping housing (120) is defined as the longitudinal centerline (I1); the intersection of the front end face (M1) and the first gripping groove (121A) is defined as the first point (A), and the first point (A) on the first gripping groove (121A) is farthest from the longitudinal centerline (I1); the intersection of the rear end face (M2) and the second gripping groove (121B) is defined as the second point (B), and the second point (B) on the second gripping groove (121B) is farthest from the longitudinal centerline (I1); the point on the third gripping groove (121C) farthest from the longitudinal centerline (I1) is defined as the third point (C). In the direction of the longitudinal centerline (I1), the distance (L1) between the front end face (M1) and the rear end face (M2) is greater than or equal to 83 mm and less than 135 mm, and the distance (L5) between the third point (C) and the rear end face (M2) is greater than or equal to 63 mm and less than 105 mm.

2. The power tool as described in claim 1, characterized in that, The angle (c) between the longitudinal axis (I5) of the battery pack (10) and the longitudinal centerline (I1) passing through the center of the grip housing (120) is less than 90°, the battery pack receiving housing (130) extends downward from the grip housing (120) and the lower part of the battery pack (10) is further forward than the upper part.

3. The power tool as described in claim 2, characterized in that, The angle (c) between the longitudinal axis (I1) of the battery pack (10) and the longitudinal centerline (I1) passing through the center of the grip housing (120) is between 80° and 90°.

4. The power tool as described in claim 3, characterized in that, The angle (c) between the longitudinal axis (I1) of the battery pack (10) and the longitudinal centerline (I1) passing through the center of the grip housing (120) is 85°.

5. The power tool as described in claim 1, characterized in that, The power tool includes a connector (134), and the battery pack receiving housing (130) includes a first half-shell (131), a second half-shell (132), and a receiving part (133). The receiving part (133) is located on the first half-shell (131) and the second half-shell (132). The connector (134) engages with the receiving part (133) to connect the first half-shell (131) and the second half-shell (132). The receiving part (133) is located at the upper end of the battery pack receiving housing (130). In a direction parallel to the longitudinal centerline (I1), the distance (L2) between the front end face (M1) and the receiving part (133) is greater than or equal to 89 mm.

6. The power tool as claimed in claim 1, characterized in that, In a direction parallel to the longitudinal centerline, the distance (L4) between the front end face (M1) and the rear surface of the battery pack receiving housing (130) is greater than or equal to 108 mm and less than 175 mm.

7. The power tool as claimed in claim 1, characterized in that, The battery pack receiving housing (130) includes a battery pack receiving port (130A) for receiving a battery pack (10). In a direction parallel to the longitudinal centerline (I1), the distance (L3) between the front end face (M1) and the front surface of the battery pack receiving port (130A) is greater than or equal to 91 mm and less than 155 mm.

8. The power tool as claimed in claim 1, characterized in that, The power tool also includes a controller (11), the battery pack (10) and the motor (2) are electrically connected to the controller (11), the controller (11) is housed in the battery pack receiving housing (130) and a capacitor (111) is integrated at the front end of the controller (11); The battery pack receiving housing (130) includes a lamp mounting base (137) for housing a lighting lamp (138) and at least a portion of the capacitor (111); And / or, a receiving recess (130C) is formed between the lamp mounting base (137) and the rear end of the grip housing (120), which is at least rearwardly recessed, and the receiving recess (130C) can accommodate the operator's little finger when the operator grips the grip housing (120).

9. The power tool as claimed in claim 8, characterized in that, The lamp mounting base (137) has a bevel (137A) facing the grip housing (120), and the angle (d) between the bevel (137A) and the front surface of the battery pack receiving housing (130) is between 95° and 175°.

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