Handheld electric tool

Abstract

The utility model discloses a handheld electric tool which comprises a handle assembly, a main shell, a motor, a main control assembly and an auxiliary control assembly, the handle assembly comprises a first half shell and a second half shell which are oppositely combined, the main shell is connected with the handle assembly, the motor is arranged in the main shell, and at least part of the main control assembly is arranged in the main shell. The auxiliary control assembly is arranged on the handle assembly, is electrically connected with the main control assembly, and comprises a substrate and a first group of components arranged on the substrate; a mounting position used for positioning the auxiliary control assembly is arranged in the first half shell, the bottom side of the auxiliary control assembly is embedded into the mounting position, the substrate is parallel to the oppositely-combined face of the first half shell and the second half shell, and the second half shell covers the upper side of the auxiliary control assembly. The handheld electric tool provided by the utility model is compact and small in overall layout, and the auxiliary control assembly is simple and reliable to fix.

Description

Technical Field

[0001] The utility model belongs to the technical field of power tools, and particularly relates to a hand-held power tool. Background Art

[0002] The control circuit board of the existing power tool is usually integral and is arranged in the main body part adjacent to the motor. For some tools with relatively large power, the performance requirements for the control circuit board are relatively high, and the volume of the control circuit board is also relatively large. The overall arrangement of the control circuit board results in a relatively large volume of the main body part and is not conducive to the heat dissipation of the components.

[0003] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0004] Therefore, what the utility model mainly solves is the technical problems of unreasonable layout and poor heat dissipation of the circuit board of the electrician tool in the existing technology.

[0005] To solve the above technical problems, the utility model provides a hand-held power tool, including:

[0006] A handle assembly, including a first half shell and a second half shell, the first half shell and the second half shell are fixedly joined to each other;

[0007] A main housing, connected to the handle assembly;

[0008] A motor, arranged in the main housing;

[0009] A main control assembly, at least partially arranged in the main housing and electrically connected to the motor;

[0010] An auxiliary control assembly, arranged in the handle assembly and electrically connected to the main control assembly, including a substrate and a first group of components arranged on the substrate;

[0011] An installation position for positioning the auxiliary control assembly is arranged in the first half shell, the bottom side of the auxiliary control assembly is embedded in the installation position, the substrate is parallel to the mating surface of the first half shell and the second half shell, and the second half shell covers the upper side of the auxiliary control assembly.

[0012] In one embodiment, the main control assembly includes a main board and a second group of components arranged on the main board, and the main board is perpendicularly arranged with respect to the board surface of the substrate.

[0013] In one embodiment, the main control assembly includes a main installation box with one side open, the main board is arranged at the bottom of the main installation box, and the second group of components are arranged on the board surface of the main board facing the open side;

[0014] The outer surface of the main mounting box is provided with guiding ribs and / or guiding grooves, and the main mounting box is slidably inserted into the main housing through the guiding ribs and / or guiding grooves.

[0015] In one embodiment, the handle assembly includes a base portion and a first hand-held portion that are sequentially arranged at one end of the main housing portion away from the motor power output. The outer diameter of the circumcircle of the base portion is greater than the outer diameter of the circumcircle of the first hand-held portion. Part of the main control assembly is arranged in the main housing and part is arranged in the base portion, and the auxiliary control assembly is arranged in the first hand-held portion.

[0016] In one embodiment, the hand-held power tool further includes:

[0017] A second hand-held portion, the starting portion of the second hand-held portion is arranged at an angle with the first hand-held portion;

[0018] An electric control switch, electrically connected to the auxiliary control assembly,

[0019] A power cord interface for installing a power cord, the power cord is electrically connected to the auxiliary control assembly;

[0020] The electric control switch and the power cord interface are arranged adjacent to each other, and both are arranged at the connection portion of the first hand-held portion and the second hand-held portion.

[0021] In one embodiment, the installation position includes wire-passing rib plates arranged on both sides of the auxiliary control assembly. The wire-passing rib plates are provided with wire-passing grooves for embedding wires, and an opening is formed on the side of the wire-passing groove away from the substrate.

[0022] In one embodiment, the second half shell is provided with a closed rib plate that is aligned with the wire-passing rib plate. After the closed rib plate is aligned with the wire-passing rib plate, the opening is closed, and the closed rib plate and the wire-passing rib plate form an isolation barrier on both sides of the auxiliary control assembly.

[0023] In one embodiment, one of the first half shell and the second half shell is provided with screw posts for installing screws. The screw posts are located outside the installation position and are staggered from the wire-passing grooves, and the screw posts are parallel to the depth direction of the wire-passing grooves.

[0024] In one embodiment, the auxiliary control assembly further includes a box body with one side open. The substrate is arranged at the bottom of the box body, and the first group of components is arranged on the side plate surface of the substrate facing the box body;

[0025] The installation position is configured as a groove structure, and the box body is embedded in the groove structure.

[0026] In one embodiment, the installation position includes a circumferential limiting rib forming a groove, and the limiting rib is in abutting cooperation with multiple side surfaces of the box body;

[0027] The installation position further includes a bottom support rib forming a groove, and the bottom support rib is in supporting contact with the outer bottom surface of the box body.

[0028] The technical solution provided by the present utility model has the following advantages:

[0029] For the hand-held power tool provided by the present utility model, the control assembly is set as a relatively independent main control assembly and an auxiliary control assembly, and the auxiliary control assembly is arranged in the handle assembly. An installation position is set on the first half shell of the handle assembly, and the bottom side of the auxiliary control assembly is embedded in the installation position, so that the substrate of the auxiliary control assembly is parallel to the mating surface of the first half shell and the second half shell of the handle assembly, and the second half shell covers the upper side of the auxiliary control assembly, thereby realizing the separate setting of the auxiliary control assembly and the main control assembly. The existing space of the handle assembly is used to accommodate the auxiliary control assembly, so that the volume of the housing accommodating the main control assembly can be relatively reduced, and the heat is dispersed, and the heat dissipation effect is better; moreover, the auxiliary control assembly is mainly positioned on one of the half shells, and the other half shell covers the upper side of the auxiliary control assembly, avoiding the alignment trouble caused by setting installation and positioning structures on both half shells, and the fixation of the auxiliary control assembly is simple and reliable. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 It is a three-dimensional structural schematic diagram of the hand-held power tool provided by the embodiment of the present utility model;

[0032] Figure 2 For Figure 1 It is a three-dimensional structural schematic diagram of the handle assembly of the hand-held power tool shown;

[0033] Figure 3 For Figure 1 It is a three-dimensional structural schematic diagram of the hand-held power tool shown with the second half shell hidden;

[0034] Figure 4 For Figure 3 It is a partial exploded structural schematic diagram of the hand-held power tool shown;

[0035] Figure 5 It is a three-dimensional structural schematic diagram of the second half shell of the hand-held power tool provided by an embodiment of the present utility model;

[0036] Figure 6 Schematic three - dimensional structure diagram of the main control component of a hand - held power tool provided by an embodiment of the present utility model;

[0037] Figure 7 is Figure 2 front orthographic projection view of the handle assembly shown;

[0038] Figure 8 Schematic three - dimensional structure diagram of the main housing of a hand - held power tool provided by an embodiment of the present utility model. Detailed implementation manners

[0039] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Hereinafter, the present utility model will be described in detail with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0040] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above - mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence.

[0041] In the present utility model, unless otherwise stated, the orientation words such as "up, down, top, bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the sake of easy understanding and description, "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above - mentioned orientation words do not limit the present utility model.

[0042] Embodiment 1

[0043] This embodiment provides a hand - held power tool. Figure 1 Schematic three - dimensional structure diagram of the hand - held power tool provided by an embodiment of the present utility model, Figure 2 is Figure 1 schematic three - dimensional structure diagram of the handle assembly of the hand - held power tool shown, Figure 3 is Figure 1 schematic three - dimensional structure diagram of the hand - held power tool hiding the second half - shell shown, Figure 4 is Figure 3 partial exploded structure diagram of the hand - held power tool shown. Figures 1 to 4 The power tool 100 shown is specifically a grooving machine. This example takes the grooving machine as an example for illustration, but should not be construed as a limitation to the present utility model. The power tool of the present utility model can also be a hand - held power tool such as an angle grinder.

[0044] Please refer to Figure 1 、 Figure 2 and Figure 3 , the hand-held power tool 100 includes a handle assembly 10, a main housing 20, a motor (not shown), a main control assembly 40, and an auxiliary control assembly 50. Among them, the motor is disposed within the main housing 20. The main housing 20 is cylindrical, and the axis of the motor is substantially parallel to the cylindrical center line of the main housing 20. The handle assembly 10 is connected to one end of the main housing 20 away from the power output of the motor. The main control assembly 40 is electrically connected to the motor, the auxiliary control assembly 50 is electrically connected to the main control assembly 40, at least a part of the main control assembly 40 is disposed within the main housing 20, and the auxiliary control assembly 50 is disposed within the handle assembly 10.

[0045] The power tool 100 further includes an output shaft 80, which is disposed at one end of the main housing 20 away from the handle assembly 10. The output shaft 80 is drivingly connected to the power output end of the motor and is driven by the motor to rotate, and is used to drive a working accessory to perform a work task.

[0046] The handle assembly 10 is for an operator to hold to control the hand-held power tool 100. The handle assembly 10 adopts a left and right half-shell structure, including a first half-shell 11 and a second half-shell 12, and the first half-shell 11 and the second half-shell 12 are fixedly joined together. Among them, the first half-shell 11 and the second half-shell 12 are substantially symmetrical about the mating surface. After the two half-shells are joined together, a plurality of gripping areas are formed on the outer peripheral surface of the handle assembly 10.

[0047] Specifically, please pay particular attention to Figure 2 , the handle assembly 10 includes a base 13, a first hand-held part 14, a second hand-held part 15, and a column 16. The base 13 is connected to the main housing 20 and is disposed at one end of the main housing 20 away from the power output of the motor. A first gripping area is formed on the outer peripheral surface of the first hand-held part 14, and a second gripping area is formed on the outer peripheral surface of the second hand-held part 15. The base 13, the first hand-held part 14, the second hand-held part 15, and the column 16 are all substantially symmetrical about the mating surface. The base 13, the first hand-held part 14, the second hand-held part 15, the column 16, and the base 13 are sequentially connected to form a closed ring, and the space surrounded by the ring forms a gripping space. The operator's hand can reach into the gripping space to grasp the first hand-held part 13 and / or the second hand-held part 15, thereby operating the power tool 100.

[0048] More specifically, the first handheld part 14, the base part 13, and the main housing 20 are arranged in sequence. One end of the second handheld part 15 is connected to the end of the first handheld part 14 away from the base part 13. The starting part of the second handheld part 15 is arranged at an angle with the first handheld part 14. The other end of the second handheld part 15 is connected to the column 16. One end of the column 16 away from the second handheld part 15 is connected to the side wall of the base part 13. In this way, the base part 13, the first handheld part 14, the second handheld part 15, the column 16, and the base part 13 are connected end to end in sequence to form the above-mentioned holding space.

[0049] Please refer to Figure 4 , the auxiliary control component 50 includes a substrate 51 and a first set of components 52 arranged on the substrate 51. The substrate 51 is in a flat plate shape, and the first set of components 52 is arranged on its plate-like surface. In a specific embodiment, the first set of components 52 includes electromagnetic shielding components, which are used to shield the interference of external electromagnetic fields on the normal operation of the power tool and the electromagnetic pollution of the electromagnetic field of the power tool itself to the external environment. Therefore, in this embodiment, the auxiliary control component 50 can also be called an electromagnetic shielding component.

[0050] An installation position 110 for positioning the auxiliary control component 50 is arranged inside the first half shell 11. The bottom side of the auxiliary control component 50 is embedded in the installation position 110. The substrate 51 is parallel to the mating surface of the first half shell 11 and the second half shell 12. The second half shell 12 covers the upper side of the auxiliary control component 50. The auxiliary control component is separately positioned and installed with the first half shell, and then the second half shell is mated with the first half shell. The positioning of the auxiliary control component does not affect the mating and fixing of the two half shells, and the fixing of the auxiliary control component is simple and convenient.

[0051] It should be noted that the "upper side" of the above-mentioned auxiliary control component 50 is understood as: taking the direction perpendicular to the extension surface of the substrate as the up and down direction, the bottom side of the auxiliary control component 50 embedded in the installation position 110 is the lower side of the auxiliary control component 50, and the other side opposite to the lower side is the upper side.

[0052] In a specific embodiment, the first half shell 11 is used for the main positioning of the auxiliary control component 50, and the second half shell 12 is used for the auxiliary positioning of the auxiliary control component 50. Please refer to Figure 5 As shown, a positioning rib 125 is arranged on the inner wall of the second half shell 12 opposite to the installation position 110. The positioning rib 125 protrudes from the inner wall of the second half shell 12 and is used to abut against the outer contour of the components of the auxiliary control component 50, so as to perform auxiliary positioning on the auxiliary control component 50. The number of the positioning ribs 125 can include multiple, and the shape of each positioning rib 125 matches the contour of the auxiliary control component 50 to be abutted. Therefore, the shapes of the positioning ribs 125 can be different.

[0053] It should be noted that during the installation process, "auxiliary positioning" does not require ensuring the alignment of the second half shell and the auxiliary control component. It only requires the second half shell to be aligned with the first half shell, which naturally achieves the effect of auxiliary positioning of the auxiliary control component. Therefore, the auxiliary positioning does not affect the alignment and fixation of the handle component.

[0054] For the handheld power tool provided in this embodiment, the control component is set as a relatively independent main control component and an auxiliary control component, and the auxiliary control component is arranged in the handle component. An installation position is set on the first half shell of the handle component, and the bottom side of the auxiliary control component is embedded in the installation position, so that the substrate of the auxiliary control component is parallel to the mating surface of the first half shell and the second half shell of the handle component. The second half shell covers the upper side of the auxiliary control component, thereby realizing the separate arrangement of the auxiliary control component and the main control component. The existing space of the handle component is used to accommodate the auxiliary control component, so that the volume of the housing for accommodating the main control component can be relatively reduced, the heat is dispersed, and the heat dissipation effect is better; the auxiliary control component is mainly positioned on one of the half shells, and the other half shell covers the upper side of the auxiliary control component, avoiding the alignment trouble caused by both half shells being provided with installation and positioning structures, and the fixation of the auxiliary control component is simple and reliable.

[0055] In a specific embodiment, please refer to Figure 3 and Figure 8 , the main housing 20 is in a cylindrical shape, a part of the main control component 40 is connected to the main housing 20, and the other part extends into the handle component 10. Specifically, a plug-in structure connected to the main control component 40 is provided in the main housing 20, and the main control component 40 is slidably plugged into the plug-in structure. When the main control component 40 is plugged in place, the main control component 40 is connected to the main housing 20. A part of the main control component 40 is located inside the main housing 20, and the other part extends into the handle component 10. By connecting the main control component to the cylindrical main housing, the handle component does not need to be provided with a fixing structure for the main control component. The alignment of the first housing and the second housing does not need to consider the fixation of the main control component, and the fixation of the main control component and the alignment of the first housing and the second housing are both more convenient and reliable.

[0056] Please refer to Figure 6 As shown, the main control component 40 includes a main board (not shown) and a second set of components 42 arranged on the main board. Among them, the main board is in a plate shape, and the second set of components 42 are arranged on the plate-shaped surface of the main board. In a specific embodiment, the main board is perpendicularly arranged with respect to the board surface of the substrate 51 of the auxiliary control component 50. In this embodiment, the main board of the main control component is perpendicularly arranged with respect to the board surface of the substrate of the auxiliary control component, which is convenient for the connection and layout of the wires between the main board and the substrate.

[0057] Specifically, the main control component 40 includes a main installation box 43 with an open side. The main board is arranged at the bottom of the main installation box 43, and the second group of components 42 is arranged on the side plate surface of the main board facing the open side of the installation box 43. It should be noted that the main board is arranged at the bottom of the main installation box 43. The main board can be arranged in contact with the bottom wall of the main installation box or spaced from the bottom wall of the installation box 43. A sliding structure is arranged on the outer surface of the main installation box 43, and the sliding structure is matched with the insertion structure of the main housing 20. Align the sliding structure of the main installation box 43 with the insertion structure of the main housing 20, and push the main control component 40 into the main housing 20, then the main installation box 43 can be slidably inserted into the main housing 20.

[0058] More specifically, guide ribs and / or guide grooves are arranged on the outer surface of the main installation box 43, and the main installation box 43 is slidably inserted into the main housing 20 through the guide ribs and / or guide grooves. Please refer to Figure 6 , a guide rib 431 is arranged on the outer side surface of the main installation box 43, and a guide groove 432 is arranged on the bottom surface of the main installation box 43. Among them, two convex ribs 433 are arranged on the outer surface of the bottom wall of the installation box 43. The two convex ribs 433 are parallel and spaced from each other, and the above-mentioned guide groove 432 is formed therebetween. The guide ribs 431 are respectively arranged on the outer surface of the opposite side walls of the installation box 43. Preferably, one guide rib 431 is arranged on the outer surface of each of the two side walls, and the two guide ribs 431 are parallel to each other.

[0059] Correspondingly, please refer to Figure 8 , a groove 21 that slidably cooperates with the guide rib 431 is arranged at the corresponding position of the main housing 20. The groove 21 is formed by two parallel long ribs spaced from each other, and the groove 21 is located between the long ribs. The main housing 20 further includes a guide rail 22, and the guide rail 22 is adapted to be inserted into the guide groove 432 and slidably cooperate with the guide groove 432.

[0060] In other embodiments, only guide ribs can be arranged on the outer side surface of the main installation box, and grooves that cooperate with the guide ribs are arranged in the corresponding main housing. Or, only guide grooves are arranged on the outer side surface of the main installation box, and guide rails that cooperate with the guide grooves are arranged in the corresponding main housing. That is to say, the main installation box can choose to adopt a structure of guide ribs and / or guide grooves to be inserted into the main housing.

[0061] For the convenience of operation, suppressing the volume of the whole machine and facilitating wiring, in a specific embodiment, please refer to Figure 2 and Figure 3The diameter of the circumscribed circle of the base 13 is larger than the diameter of the circumscribed circle of the first hand-held part 14. A portion of the main control assembly 40 is disposed on the main housing 20 and a portion is disposed on the base 13. The auxiliary control assembly 50 is disposed on the first hand-held part 14. The power tool 100 further includes an electric control switch 60 and a power cord interface 70, wherein the electric control switch 60 is used to control the start and stop of the motor, and the power cord interface 70 is used to install a power cord to connect the hand-held power tool to an external power source, thereby supplying power to the hand-held power tool. The power cords installed in the electric control switch 60 and the power cord interface 70 are both electrically connected to the auxiliary control assembly 50. The electric control switch 60 and the power cord interface 70 are disposed adjacent to each other and are both disposed at the connection between the first hand-held part 14 and the second hand-held part 15.

[0062] In the above embodiment, the first hand-held part is thinner than the base part, which is convenient for gripping. The auxiliary control component is arranged in the first hand-held part, and the existing internal space of the first hand-held part is utilized, so that the volume of the whole machine will not be increased. The volume of the main control component can be smaller than that of the control circuit board arranged in a centralized manner, and can be accommodated in the thicker base part, so that the overall volume is compact and small. Since the first hand-held part is adjacent to the base part, a part of the main control component extends into the base part, and the distance to the auxiliary control component is relatively close, which is convenient for shortening the length of the wire electrically connecting the two and reducing the complexity of wiring. Moreover, the electric control switch and the power cord interface are both arranged at the connection between the first hand-held part and the second hand-held part, which is convenient for the triggering operation of the electric control switch by hand, and also improves the neatness of the wiring layout of the whole machine.

[0063] The distribution of the electrical components of the handheld power tool determines the direction of the wires. In order to regulate the wiring, in the specific embodiment, please refer to Figure 4 As shown, the installation position 110 includes a wire-passing rib plate 114 disposed on both sides of the auxiliary control component 50. The wire-passing rib plate 114 is provided with a wire-passing groove a for embedding the wire. The wire-passing groove a is formed with an opening on the side away from the substrate 51, and the wire is inserted into the wire-passing groove a from the opening. Specifically, the wire-passing rib plates 114 are relatively arranged and located at both ends of the length direction of the installation position 110. Each wire-passing rib plate 114 is provided with a wire-passing groove a. The wire passes through the wire-passing groove a from both ends of the auxiliary control component 50 and is electrically connected to the auxiliary control component 50. In order to facilitate the insertion of the wire, the wire-passing rib plate 114 is higher than the side wall of the adjacent first half shell 11. When inserting the wire, the fingers do not need to be inserted into the first half shell, which facilitates the insertion of the wire into the wire-passing groove from outside the first half shell.

[0064] After the wire is inserted into the wire slot, it is inevitable that the wire will automatically fall out of the opening because the wire slot has an opening and the wire has a certain hardness. In order to ensure the regularity of the wire layout and prevent accidental fallout, in one embodiment, see Figure 5 and Figure 7, the second half shell 12 is provided with a closed rib plate 122 matched with the wire passing rib plate 114, the closed rib plate 122 and the wire passing rib plate 114 are arranged one by one, and the shape of the closed rib plate 122 matches the shape of the wire passing rib plate 114. When the first half shell 11 and the second half shell 12 are matched, the closed rib plate 122 and the wire passing rib plate 114 are also matched with each other, and the opening of the wire passing groove a is closed by the closed rib plate 122, and the closed rib plate 122 and the wire passing rib plate 114 form an isolation barrier on both sides of the auxiliary control component 50. The advantages of such a setting are: on the one hand, the wire is reliably positioned in the wire passing groove and will not fall out, and the wire positioning is more reliable; on the other hand, the degree of isolation of the space accommodating the auxiliary control component is improved, the adverse effect of the heat of the main control component and the heat-generating components such as the motor on the auxiliary control component is reduced, and waterproof and dustproof can also be achieved to a certain extent.

[0065] In a specific embodiment, the first half shell 11 and the second half shell 12 are fixedly connected by screws. Figure 4 The first half shell 11 is provided with a screw column 116 for installing a screw. The screw column 116 is located outside the installation position 110 and is offset from the wire groove a. The screw column 116 is parallel to the depth direction of the wire groove a. The screw column is offset from the wire groove and is parallel to the depth direction of the wire groove, which can prevent the screw column from interfering with the routing direction of the wire, and facilitates the wire to be inserted into the wire groove along a smooth path.

[0066] In order to facilitate the installation of the auxiliary control component, in the specific embodiment, see Figure 4 The auxiliary control assembly 50 further includes a box body 53 with an open side, the box body 53 having a bottom wall opposite to the open side and a surrounding side wall, and the substrate 51 is arranged at the bottom of the box body 53, close to the bottom wall of the box body 53. The first group of components 52 is arranged on a side surface of the substrate 51 facing the open side of the box body 53. The mounting position 110 is constructed as a groove structure, and the box body 53 is embedded in the groove structure, so as to realize the positioning of the auxiliary control assembly and the first half shell.

[0067] It should be noted that the substrate is disposed close to the bottom of the box body, including a matching manner in which the substrate is in contact with the bottom wall of the box body, and may also include a matching manner in which a gap is disposed between the substrate and the bottom wall of the box body.

[0068] Specifically, the installation position 110 includes a groove and a circumferential limiting rib forming the groove. The box body 53 is embedded in the groove, and the circumferential limiting rib is in contact and cooperation with the box body 53 on multiple sides, thereby positioning the box body 53 circumferentially. The installation position 110 further includes a bottom supporting rib 115 formed at the bottom of the groove. The bottom supporting rib 115 is in supporting contact with the outer bottom surface of the box body 53, which can define the embedding depth of the box body 53 and provide reliable support. With such a setting, when installing the auxiliary control component, it is only necessary to align the box body with the groove and press it downward so that the box body contacts the bottom supporting rib. In the circumferential direction, the circumferential limiting rib limits the installation box. The installation operation of the installation box is simple and the positioning is reliable.

[0069] In this embodiment, the circumferential limiting rib includes a retaining rib 113. The number of the retaining ribs 113 is multiple, and they are arranged at intervals on the circumference of the groove. Preferably, the retaining ribs 113 are at least arranged at the corners of the groove. The circumferential limiting rib further includes a wire-passing rib plate 114. The wire-passing rib plate 114 is located on the opposite side edges of the groove, which is not only used for wire passing but also can limit the box body.

[0070] After the auxiliary control component 50 is embedded in the installation position 110, the wire-passing rib plate 114 forming the wire groove a is higher than the circumferential side wall of the box body 53. The wire-passing rib plate 114 forming the wire groove a is set higher than the box body 53. On the premise of realizing electrical connection with the substrate 51, it is ensured that the wire is stuck in the wire groove a.

[0071] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or modifications without creative efforts, and all of them should belong to the protection scope of the present invention.

Claims

1. A handheld power tool, characterized in that, include: The handle assembly comprises a first half shell and a second half shell, wherein the first half shell and the second half shell are fixedly engaged with each other; A main housing connected to the handle assembly; A motor is disposed in the main housing; a main control assembly, at least partially disposed in the main housing and electrically connected to the motor; An auxiliary control assembly, arranged on the handle assembly, electrically connected to the main control assembly, comprising a substrate and a first group of components arranged on the substrate; The first half shell is provided with a mounting position for positioning the auxiliary control component, the bottom side of the auxiliary control component is embedded in the mounting position, the substrate is parallel to the mating surfaces of the first half shell and the second half shell, and the second half shell covers the upper side of the auxiliary control component.

2. The hand-held power tool according to claim 1, characterized in that, The main control component includes a main board and a second group of components arranged on the main board, and the main board is arranged perpendicular to the board surface of the substrate.

3. The hand-held power tool according to claim 2, characterized in that, The main control assembly comprises a main installation box with one side open, the main board is arranged at the bottom of the main installation box, and the second group of components is arranged on a side surface of the main board facing the open side; The outer surface of the main installation box is provided with guide ribs and / or guide grooves, and the main installation box is slidably plugged with the main shell body through the guide ribs and / or guide grooves.

4. The hand-held power tool according to claim 2, characterized in that, The handle assembly includes a base and a first hand-held part which are sequentially arranged at one end of the main shell away from the motor power output, the circumscribed circle diameter of the base is larger than the circumscribed circle diameter of the first hand-held part, the main control assembly is partially arranged on the main shell and partially arranged on the base, and the auxiliary control assembly is arranged on the first hand-held part.

5. The hand-held power tool according to claim 4, characterized in that, The handheld power tool also includes: a second hand-held portion, wherein a starting portion of the second hand-held portion is arranged at an angle to the first hand-held portion; an electric control switch, electrically connected to the auxiliary control assembly, A power cord interface, used for installing a power cord, wherein the power cord is electrically connected to the auxiliary control assembly; The electric control switch and the power line interface are arranged adjacent to each other and are both arranged at the connection between the first hand-held part and the second hand-held part.

6. The hand-held power tool according to claim 1, wherein, The installation position includes wire-passing rib plates arranged on both sides of the auxiliary control component, and the wire-passing rib plates are provided with wire-passing grooves for embedding wires, and the wire-passing grooves form an opening on a side away from the substrate.

7. The hand-held power tool according to claim 6, characterized in that, The second half shell is provided with a closed rib plate matched with the wire-passing rib plate. After the closed rib plate is matched with the wire-passing rib plate, the opening is closed, and the closed rib plate and the wire-passing rib plate form an isolation barrier on both sides of the auxiliary control component.

8. The hand-held power tool according to claim 6, wherein, One of the first half shell and the second half shell is provided with a screw column for installing a screw, the screw column is located outside the installation position and staggered with the wire groove, and the screw column is parallel to the depth direction of the wire groove.

9. The hand-held power tool according to claim 1, characterized in that, The auxiliary control assembly further comprises a box body with one side open, the substrate is arranged at the bottom of the box body, and the first group of components is arranged on a side surface of the substrate facing the box body; The installation position is constructed as a groove structure, and the box body is embedded in the groove structure.

10. The hand-held power tool according to claim 9, characterized in that, The installation position includes a peripheral limiting rib forming a groove, and the limiting rib is in abutment with multiple side surfaces of the box body; The installation position further includes a bottom support rib forming a groove, and the bottom support rib is in supporting contact with the outer bottom surface of the box body.

Images