Switch module and electric tool

Abstract

The invention discloses a switch module and an electric tool, the switch module comprises a base, a circuit board and a switching mechanism, the base is provided with an accommodating cavity, and the circuit board is arranged on the base; the switching mechanism comprises a connecting rod assembly and a switch assembly, and the connecting rod assembly is movably arranged on the base; the switch assembly comprises a switching piece and connecting pins located at the two opposite ends of the switching piece, the switching piece is electrically connected to the circuit board, and the connecting pins located at the two opposite ends of the switching piece are electrically connected with the circuit board. When the connecting rod assembly is stressed to be in a forward rotation gear, the connecting rod assembly abuts against the first end of the switching piece, and the connecting pin located at the first end abuts against the switching piece. When the connecting rod assembly is stressed to be arranged at the reverse gear, the connecting rod assembly abuts against the second end of the switching piece, and the connecting pin at the second end abuts against the switching piece. Thus, the connecting rod assembly can enable the switching piece to abut against the connecting pins at different positions under the action of external force, different lines are connected to the motor, and forward rotation or reverse rotation of the motor is controlled.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of electrical appliances, and in particular to a switch module and an electric tool. Background Art

[0002] With the continuous development of science and technology, more and more power tools (such as electric drills) have been developed to assist people in their work. Due to work requirements, these power tools are usually equipped with a control structure for controlling the forward or reverse rotation of the motor. At present, the motors built into most power tools use the principle of Hall sensors to switch between forward and reverse rotation. Summary of the invention

[0003] In order to solve the above technical problems, an embodiment of the present invention provides a switch module and an electric tool that are easy to use.

[0004] The embodiment of the present invention solves the technical problem by adopting the following technical solution:

[0005] A switch module comprises a base, a circuit board and a switching mechanism, wherein the base is provided with a receiving cavity, and the circuit board is arranged on the base; the switching mechanism comprises a connecting rod assembly and a switch assembly accommodated in the receiving cavity, wherein the connecting rod assembly is movably arranged on the base, and a part of the connecting rod assembly is located in the receiving cavity; wherein the switch assembly comprises a switching piece and connecting pins located at opposite ends of the switching piece, the switching piece is electrically connected to the circuit board, and the connecting pins are both electrically connected to the circuit board; when the connecting rod assembly is in an initial position, the connecting pins located at opposite ends of the switching piece have a gap with the switching piece, when one end of the connecting rod assembly is subjected to force and placed in a forward gear position, the other end of the connecting rod assembly presses against the first end of the switching piece, and the connecting pin located at the first end of the switching piece abuts against the switching piece; when one end of the connecting rod assembly is subjected to force and placed in a reverse gear position, the other end of the connecting rod assembly presses against the second end of the switching piece, and the connecting pin located at the second end of the switching piece abuts against the switching piece.

[0006] Optionally, the switching piece has elastic deformation performance, and when the connecting rod assembly presses against the end of the switching piece, the end of the switching piece will be deformed by pressure and abut against the connecting pin.

[0007] Optionally, the switching piece includes a first tilting portion, a second tilting portion and a middle portion that are connected to each other, and the first tilting portion and the second tilting portion are tilted toward the same side relative to the middle portion, wherein the middle portion is rotatably disposed on the base and electrically connected to the circuit board.

[0008] Optionally, the first tilted portion and the second tilted portion both include a tilted section and a flat section connected to each other, one end of the tilted section is connected to the middle portion, and the other end of the tilted section is connected to the flat section.

[0009] Optionally, the switch assembly also includes a mounting block, the base is provided with a slot, and the mounting block is snapped into the slot, wherein the mounting block has a base surface facing the switching piece, the mounting block is provided with a supporting portion protruding from the base surface in the direction toward the switching piece, the switching piece is arranged on the supporting portion, and the connecting feet located at opposite ends of the switching piece are arranged on the mounting block and partially expose the base surface.

[0010] Optionally, the switch assembly further comprises a limit block, the supporting portion is provided with a groove, the limit block is arranged in the groove, wherein limit protrusions are provided on opposite sides of the limit block, and the switching piece is arranged on the limit block and is clamped on the limit protrusions.

[0011] Optionally, the connecting rod assembly includes a joystick, a first elastic member and a pressure head, the joystick is movably arranged on the base, the joystick includes a first movable end and a second movable end, the first movable end is arranged outside the accommodating cavity, the second movable end is arranged inside the accommodating cavity, the second movable end is provided with a first concave cavity, the first elastic member is accommodated in the first concave cavity, and the pressure head is connected to an end of the first elastic member away from the first concave cavity;

[0012] When the first movable end is subjected to force and is placed in the forward gear position, the second movable end drives the pressure head to move and press the first end of the switching piece, and the connecting foot located at the first end of the switching piece abuts against the switching piece; when the second movable end is subjected to force and is placed in the reverse gear position, the second movable end drives the pressure head to move and press the second end of the switching piece, and the connecting foot located at the second end of the switching piece abuts against the switching piece.

[0013] Optionally, the switch module further includes an adjusting mechanism, which is movably disposed on the base, and is used to control the circuit board to output an adjusting signal to control the working state of the motor.

[0014] Optionally, the adjustment mechanism includes a movable rod, a magnetic member and a conductive guide block, the base is provided with an opening, the movable rod includes a rod body and a connecting seat, the connecting seat is located in the accommodating cavity, one end of the rod body is connected to the connecting seat, and the other end of the rod body passes through the opening and is exposed outside the base, the guide block is provided on one side of the connecting seat, and the magnetic member is provided on the connecting seat; the circuit board is provided with a Hall sensor;

[0015] The switch module further includes a first conductive block and a second conductive block, the first conductive block and the second conductive block are arranged in the accommodating cavity at intervals, the first conductive block and the second conductive block are both connected to the circuit board and are located on the same side of the movable rod, and the first conductive block and the second conductive block are arranged side by side along the axial direction of the rod body;

[0016] When the rod body is subjected to force to drive the connecting seat to move from the first position to the second position, the two ends of the conductive block respectively abut against the first conductive block and the second conductive block, and the distance between the magnetic member and the Hall sensor is shortened.

[0017] Optionally, the connecting seat is provided with a guide slot, a guide bar is provided in the base, the guide bar is arranged in the guide slot, and the connecting seat moves in a directed manner along the guide bar through the guide slot.

[0018] Optionally, the adjustment mechanism further includes a second elastic member, the connecting seat is provided with a second concave cavity, and the second elastic member is arranged in the second concave cavity and abuts against the guide block.

[0019] Optionally, the base is provided with a sealing groove, and the sealing groove surrounds the opening, and the opening passes through the bottom of the sealing groove; the adjustment mechanism also includes a sealing member, the sealing member is sleeved on the rod body, and the sealing member is embedded in the sealing groove.

[0020] Optionally, the switch module also includes a button and an elastic reset member, wherein the reset member is sleeved on the rod body, and the button is arranged on the base and fixedly connected to one end of the rod body away from the connecting seat; when the button is pressed to cause the rod body to drive the connecting seat to move from the first position to the second position, the reset member is pressurized and is in a compressed state, and when the button is released, the reset member restores its deformation, and the button drives the rod body to reset.

[0021] Optionally, the switch module further includes an aluminum substrate and a flexible cable, wherein the aluminum substrate is disposed on one side of the base and is arranged opposite to the circuit board, and two ends of the flexible cable are respectively connected to the circuit board and the aluminum substrate.

[0022] Optionally, the switch module further includes a plurality of output connection terminals and a plurality of connectors, one end of each of the output connection terminals is connected to the aluminum substrate via a connector, and the other end of the input connection terminal is exposed outside the base.

[0023] Optionally, the switch module further includes a heat sink, which is disposed on the base and abuts against the aluminum substrate.

[0024] Optionally, the switch module further includes a shell cover, which is detachably connected to the base and covers the circuit board.

[0025] Optionally, the base includes a first base block and a second base block, the first base block is detachably connected to the second base block and together they construct the accommodating cavity, and at least a portion of the connecting rod assembly is disposed between the first base block and the second base block.

[0026] The embodiment of the present invention also adopts the following technical solutions to solve the technical problems:

[0027] An electric tool comprises the switch module mentioned above.

[0028] The beneficial effects of the embodiments of the present invention are as follows: the switch module provided by the embodiments of the present application includes a base, a circuit board and a switching mechanism, the base is provided with a receiving cavity, and the circuit board is arranged on the base; the switching mechanism includes a connecting rod assembly and a switch assembly accommodated in the receiving cavity, the connecting rod assembly is movably arranged on the base, and part of the connecting rod assembly is located in the receiving cavity; wherein the switch assembly includes a switching piece and connecting pins located at opposite ends of the switching piece, the switching piece is electrically connected to the circuit board, and the connecting pins located at opposite ends of the switching piece are both electrically connected to the circuit board. When the connecting rod assembly is in the initial position, the connecting pins located at opposite ends of the switching piece have a gap with the switching piece, when one end of the connecting rod assembly is subjected to force and placed in the forward gear position, the other end of the connecting rod assembly presses against the first end of the switching piece, and the connecting pin located at the first end of the switching piece abuts against the switching piece; when the other end of the connecting rod assembly is subjected to force and placed in the reverse gear position, the other end of the connecting rod assembly presses against the second end of the switching piece, and the connecting pin located at the second end of the switching piece abuts against the switching piece. In this way, under the action of external force, the connecting rod assembly can switch between the forward gear and the reverse gear, so that the switching piece abuts against the connecting pins at different positions, so that different circuits in the circuit board are connected to the motor, thereby controlling the forward or reverse rotation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0030] Figure 1 This is a schematic diagram of the structure of a switch module in one embodiment of the present application;

[0031] Figure 2 yes Figure 1 Schematic diagram from another perspective;

[0032] Figure 3 yes Figure 1 Schematic diagram after sectioning along the median section line PP;

[0033] Figure 4 yes Figure 1 A schematic diagram of the structure of the base;

[0034] Figure 5 yes Figure 1 Exploded view of the switch module;

[0035] Figure 6 yes Figure 5 Schematic diagram from another perspective;

[0036] Figure 7 yes Figure 5 Schematic diagram of the structure of the middle part;

[0037] Figure 8 yes Figure 7 A schematic diagram of the structure of the switch assembly;

[0038] Fig. 9 yes Figure 8 The structural breakdown diagram of

[0039] Fig.10 yes Figure 7 Exploded view of the center link assembly;

[0040] Fig.11 is a schematic diagram of the relative position of the adjustment mechanism and the circuit board;

[0041] Fig.12 It is a structural exploded diagram of the regulating mechanism;

[0042] In the figure: 1. switch module; 2. base; 3. circuit board; 4. switching mechanism; 5. adjustment mechanism; 6. first conductive block; 7. second conductive block; 8. button; 9. reset member; 10. aluminum substrate; 11. flexible cable; 12. output connection terminal; 13. connector; 14. heat sink; 15. screw; 16. shell cover; 17. display light; 18. input terminal;

[0043] 21. first base block; 22. second base block; 23. guide strip; 24. protrusion; 25. positioning protrusion; 26. limit plug hole;

[0044] 31. Hall sensor;

[0045] 201, accommodating cavity; 202, through hole; 203, card slot; 204, opening; 205, sealing groove; 206, guide groove; 207, threaded hole; 208, connecting hole;

[0046] 41. switch assembly; 42. connecting rod assembly;

[0047] 411, switch piece; 412, connection pin; 413, common pin; 414, mounting block; 415, limit block;

[0048] 4111, first end; 4112, second end; 411a, first tilting portion; 411b, second tilting portion; 411c, middle portion; 411d, tilting section; 411e, flat section; 4141, base surface; 4142, supporting portion; 41421, groove; 4151, limiting protrusion;

[0049] 421, operating rod; 422, first elastic member; 423, pressing head;

[0050] 4211, first movable end; 4212, second movable end; 42121, first concave cavity;

[0051] 51. movable rod; 52. magnetic member; 53. guide block; 54. second elastic member; 55. sealing member;

[0052] 511, rod body; 512, connecting seat;

[0053] 5121, guide groove; 5122, second concave cavity; 5123, insertion hole; 5124, receiving groove;

[0054] 81. Guide block;

[0055] 141. Avoidance hole; 142. Positioning notch; 143. Protrusion. DETAILED DESCRIPTION

[0056] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0058] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] like Figure 1-3 As shown, a switch module 1 provided in one embodiment of the present application includes a base 2, a circuit board 3 and a switching mechanism 4. The circuit board 3 and the switching structure are both arranged on the base 2. The switching mechanism 4 is used to switch different circuits in the circuit board 3 to access external electronic components.

[0060] The circuit board 3 can be arranged inside or outside the base 2, and can be arranged according to needs. In this embodiment, the base 2 is provided with a receiving cavity 201, and the circuit board 3 is arranged in the receiving cavity 201, that is, the circuit board 3 is arranged inside the base 2. The external electronic components include but are not limited to motors.

[0061] In some embodiments, Figure 4 As shown, the base 2 includes a first base block 21 and a second base block 22, the first base block 21 is detachably connected to the second base block 22 and together constructs a receiving cavity 201 and a through hole 202 communicating with the receiving cavity 201, and at least part of the connecting rod assembly 42 is arranged between the first base block 21 and the second base block 22. It can be understood that the first base block 21 and the second base block 22 both have a partial recessed area, and the partial recessed area can be constructed to form the receiving cavity 201 and the through hole 202. The through hole 202 can be used to partially expose components such as capacitors from the receiving cavity 201, so as to reduce the space occupied by components in the circuit board 3, which is conducive to reducing the size of the circuit board 3. In this embodiment, the switching mechanism 4 is arranged on the first base block 21.

[0062] The first base block 21 and the second base block 22 can be connected by threaded connection through bolts or the like, or can be connected by snap fastenings. Of course, they can also be connected by other methods, which are specifically configured according to needs.

[0063] In some embodiments, Figure 5-7As shown, the switching mechanism 4 includes a switch assembly 41 and a connecting rod assembly 42. The switch assembly 41 is accommodated in the accommodating cavity 201 and connected to the circuit board 3. The connecting rod assembly 42 is movably arranged on the base 2, and part of the connecting rod assembly 42 is located in the accommodating cavity 201. Among them, the switch assembly 41 includes a switching piece 411 and connecting pins 412 located at opposite ends of the switching piece 411. The switching piece 411 is electrically connected to the circuit board 3, and the connecting pins 412 located at opposite ends of the switching piece 411 are both connected to the circuit board 3. The connecting rod assembly 42 is used to drive the switching piece 411 to connect with the connecting pins 412 at different positions, so that different circuits in the circuit board 3 are turned on, so as to indirectly control the forward or reverse rotation of the externally connected motor.

[0064] When the connecting rod assembly 42 is in the initial position, as shown in FIG. Figure 8 As shown, the connecting pins 412 at the two opposite ends of the switching piece 411 have gaps with the switching piece 411. In other words, the connecting pins 412 at the two opposite ends of the switching piece 411 are disconnected from the switching piece 411. When one end of the connecting rod assembly 42 is subjected to force and placed in the forward gear position, the other end of the connecting rod assembly 42 presses against the first end 4111 of the switching piece 411, and the connecting pin 412 at the first end 4111 of the switching piece 411 abuts against the switching piece 411, that is, the switching piece 411 is connected to the connecting pin 412 at the first end 4111 of the switching piece 411, and at this time, the circuit in the circuit board 3 that controls the forward rotation of the motor is connected. When one end of the connecting rod assembly 42 is subjected to force and is placed in the reverse gear, the other end of the connecting rod assembly 42 presses against the second end 4112 of the switching piece 411, and the connecting pin 412 located at the second end 4112 of the switching piece 411 abuts against the switching piece 411, that is, the switching piece 411 is connected to the connecting pin 412 located at the second end 4112 of the switching piece 411, and at this time, the circuit in the circuit board 3 that controls the reversal of the motor is turned on.

[0065] It can be understood that when the switch module 1 is used to connect to the motor, the switch sheet 411 acts as a switch of the circuit board 3 for controlling the forward and reverse rotation of the motor. The switch sheet 411 is provided with a common pin 413 connected to the circuit board 3, and the common pin 413 can be formed by extending outward from the switch sheet 411, or can be an independent pin connected to the switch sheet 411, which can be set according to needs.

[0066] What needs to be explained here is that Figure 8As shown, the first end 4111 of the switching piece 411 and the second end 4112 of the switching piece 411 are two ends of the switching piece 411 that are arranged opposite to each other. The number of the connecting pins 412 located at the first end 4111 of the switching piece 411 and the connecting pins 412 located at the second end 4112 of the switching piece 411 can be set as needed, and can be one, two, or even three. When there are multiple connecting pins 412 located at the same end of the switching piece 411, the multiple connecting pins 412 can be connected to each other and then connected to the circuit board 3, which is conducive to improving the current carrying capacity of the connecting pins 412.

[0067] In some embodiments, the switching piece 411 has elastic deformation performance, and the connecting rod assembly 42 presses the end of the switching piece 411, and the end of the switching piece 411 will be deformed by pressure and abut the connecting leg 412. That is, the switching piece 411 is bent after being pressed by the connecting rod assembly 42 and abuts the connecting leg 412. At the same time, the position of the switching piece 411 that is not pressed needs to be fixed relative to the base 2 to prevent the switching piece 411 from turning over as a whole when the switching piece 411 is pressed.

[0068] It should be noted here that the end of the switching piece 411 refers to one of the first end 4111 of the switching piece 411 and the second end 4112 of the switching piece 411 .

[0069] In some embodiments, the switching piece 411 is pressed by the connecting rod assembly 42 and rotates relative to the base 2 to abut against the connecting foot 412. Figure 8 and Fig. 9 As shown, the switching piece 411 includes a first tilting portion 411a, a second tilting portion 411b and a middle portion 411c connected to each other. The first tilting portion 411a and the second tilting portion 411b are tilted toward the same side relative to the middle portion 411c. The middle portion 411c is rotatably disposed on the base 2 and electrically connected to the circuit board 3. In this way, when the other end of the connecting rod assembly 42 presses against one of the first tilting portion 411a and the second tilting portion 411b, the other of the two will tilt relative to the middle portion 411c, ensuring that only the connecting pin 412 at one end of the switching piece 411 is connected to the circuit board 3, which is beneficial to enhancing the stability of the switch module 1. In this embodiment, as shown in FIG. Fig. 9 As shown, the first tilting portion 411a and the second tilting portion 411b both include a tilting section 411d and a flat section 411e connected to each other, one end of the tilting section 411d is connected to the middle portion 411c, and the other end of the tilting section 411d is connected to the flat section 411e. When the other end of the connecting rod assembly 42 applies pressure to the first tilting portion 411a or the second tilting portion 411b, compared to the way in which the tilting section 411d contacts the connecting leg 412, the flat section 411e contacts the connecting leg 412 to increase the contact area, which is conducive to the stable operation of the switch assembly 41.

[0070] The switching piece 411 is connected to the circuit board 3 by connecting the middle part 411c to the circuit board 3. For example, the middle part 411c is provided with a common pin 413 connected to the circuit board 3, and the common pin 413 can keep the switching piece 411 and the circuit board 3 connected at all times.

[0071] It can be understood that the switching piece 411 can be movably set directly on the base 2. For example, a fixed structure for installing the switching piece 411 is provided on the base 2 (not shown in the figure). The fixed structure can be two clamping protrusions with a spacing, and the switching piece 411 is placed between the clamping protrusions, and the first raised portion 411a and the second raised portion 411b are arranged outside the two clamping protrusions; it can also be indirectly installed on the base 2 through other fixed structures, which can be set according to needs.

[0072] In some embodiments, the switching piece 411 is indirectly mounted on the base 2 through other fixing structures. Figure 7-9 As shown, the switch assembly 41 further includes a mounting block 414, the base 2 is provided with a slot 203, and the mounting block 414 is snapped into the slot 203. The mounting block 414 has a base surface 4141 facing the switching piece 411, and the mounting block 414 is provided with a supporting portion 4142 protruding from the base surface 4141 toward the switching piece 411. The switching piece 411 is movably arranged on the supporting portion 4142, so that the first tilting portion 411a and the second tilting portion 411b of the switching piece 411 are both spaced from the base surface 4141, and the connecting pins 412 at opposite ends of the switching piece 411 are arranged on the mounting block 414 and partially expose the base surface 4141. In this way, when the connecting rod assembly 42 presses against the end of the switching piece 411, the switching piece 411 can abut against the connecting pin 412 arranged on the mounting block 414, thereby realizing the closure of part of the circuit on the circuit board 3.

[0073] In some embodiments, such as Fig. 9 As shown, the switch assembly 41 also includes a limit block 415, and the supporting portion 4142 is provided with a groove 41421. The limit block 415 is arranged in the groove 41421, wherein the limit block 415 is provided with a limit protrusion 4151 on both opposite sides, and the switching piece 411 is provided on the limit block 415 and clamped on the limit protrusion 4151. In this way, the switching piece 411 can be rotatably indirectly mounted on the base 2, and the switching piece 411 can be constrained to rotate in a fixed position, thereby reducing the risk of the switching piece 411 being detached. In this embodiment, there are four limit protrusions 4151, and two limit protrusions 4151 are provided on both opposite sides of the limit block 415, and the two limit protrusions 4151 on each side are arranged at intervals, and the four limit protrusions 4151 clamp the switching piece 411 together.

[0074] It should be understood that the switching piece 411 and the connecting pin 412 are both made of conductive metal to facilitate conductive connection with the circuit board 3 .

[0075] In some embodiments, Figure 7 and Fig.10 As shown, the connecting rod assembly 42 includes an operating rod 421, a first elastic member 422 and a pressure head 423. The operating rod 421 is movably arranged on the base 2. The operating rod 421 includes a first movable end 4211 and a second movable end 4212. The first movable end 4211 is arranged outside the accommodating cavity 201, and the second movable end 4212 is arranged inside the accommodating cavity 201. The second movable end 4212 is provided with a first concave cavity 42121. The first elastic member 422 is accommodated in the first concave cavity 42121. The pressure head 423 is connected to one end of the first elastic member 422 away from the first concave cavity 42121. When the first movable end 4211 is subjected to force and is placed in the forward gear position, the second movable end 4212 drives the pressure head 423 to move and press the first end 4111 of the switching piece 411, and the connecting foot 412 located at the first end 4111 of the switching piece 411 abuts against the switching piece 411; when the second movable end 4212 is subjected to force and is placed in the reverse gear position, the second movable end 4212 drives the pressure head 423 to move and press the second end 4112 of the switching piece 411, and the connecting foot 412 located at the second end 4112 of the switching piece 411 abuts against the switching piece 411.

[0076] The operation mode of the joystick 421 can be to switch between the forward gear and the reverse gear by sliding the first movable end 4211, as long as a slot for the joystick 421 to slide is provided on the base 2. Of course, the switching between the forward gear and the reverse gear can also be achieved by bending the first movable end 4211. In this case, part of the joystick 421 is rotatably fixed to the base 2, and the second movable end 4212 is rotated by pressing the first movable end 4211. The movement mode of the joystick 421 relative to the base 2 is not limited to the above two modes, as long as the gear switching of the joystick 421 can be achieved, and the specific mode can be set as needed.

[0077] In some embodiments, the pressure head 423 can be directly fixed on the first elastic member 422, in which case the end of the pressure head 423 needs to be fixed to the first elastic member 422; the pressure head 423 can also be sleeved on the first elastic member 422, in which case the pressure head 423 needs to be provided with a space for sleeved first elastic member 422. Of course, the pressure head 423 can also be provided in other ways, which can be specifically provided as needed. In this embodiment, as Figure 3 and Fig.10As shown, the pressing head 423 is sleeved on the first elastic member 422 . Under the elastic force of the first elastic member 422 , the pressing head 423 abuts against the switching piece 411 through the first elastic member 422 , thereby preventing the pressing head 423 from being separated from the operating rod 421 .

[0078] The first elastic member 422 may be a spring, or a reed with elastic deformation, or other materials as long as elastic deformation can be achieved.

[0079] In some embodiments, Fig.10 As shown, one end surface of the pressure head 423 close to the switching plate 411 is an arc-shaped surface, which is beneficial to reduce the friction resistance when the pressure head 423 moves relative to the switching plate 411, and is beneficial for the connecting rod assembly 42 to switch to the forward gear or the reverse gear more smoothly.

[0080] In some embodiments, Figure 3 and Fig.11 As shown, the switch module 1 also includes an adjustment mechanism 5, which is movably arranged on the base 2, and the adjustment mechanism 5 is used to control the circuit board 3 to output an adjustment signal to control the working state of the motor. Among them, the working state of the motor includes starting, stopping, accelerating, decelerating, etc. of the motor, and different functions can be realized according to the circuits built into the circuit board 3. The adjustment mechanism 5 serves as an input mechanism for adjusting the adjustment signal of the working state of the motor. In this embodiment, the adjustment mechanism 5 is arranged on the first base block 21.

[0081] In some embodiments, Figure 4 , Figure 7 , Fig.11 , Fig.12 As shown, the base 2 is provided with an opening 204, the circuit board 3 is provided with a Hall sensor 31, the adjustment mechanism 5 includes a movable rod 51, a magnetic member 52 and a conductive guide block 53, the movable rod 51 includes a rod body 511 and a connecting seat 512, the connecting seat 512 is located in the accommodating cavity 201, one end of the rod body 511 is connected to the connecting seat 512, and the other end of the rod body 511 passes through the opening 204 and is exposed outside the base 2. The guide block 53 is provided on one side of the base 2, and the magnetic member 52 is provided on the connecting seat 512.

[0082] Among them, Figure 7 and Fig.11 As shown, the switch module 1 also includes a first conductive block 6 and a second conductive block 7, which are arranged at intervals in the accommodating cavity 201, and the first conductive block 6 and the second conductive block 7 are both connected to the circuit board 3 and are located on the same side of the movable rod 51, and the first conductive block 6 and the second conductive block 7 are arranged side by side along the axial direction of the rod body 511.

[0083] When the rod body 511 is subjected to force and drives the connection seat 512 to move from the first position to the second position, the two ends of the conductive block 53 respectively abut the first conductive block 6 and the second conductive block 7, and the distance between the magnetic member 52 and the Hall sensor 31 is shortened. In this way, by utilizing the position change between the magnetic member 52 and the Hall sensor 31, the magnetic field provided by the magnetic member 52 to the Hall sensor 31 changes, and the Hall sensor 31 starts to work due to the change in the magnetic field. The circuit built into the circuit board 3 is turned on by the Hall sensor 31, thereby outputting an adjustment signal to adjust the working state of the motor.

[0084] It should be noted here that when the rod body 511 is in the first position, the conductive block 53 arranged on the connecting seat 512 is only in contact with the first conductive block 6, that is, the first conductive block 6 and the second conductive block 7 are not connected through the conductive block 53, and some circuits on the circuit board 3 are disconnected. When the rod body 511 is in the second position, the first conductive block 6 and the second conductive block 7 are connected through the conductive block 53, and some circuits on the circuit board 3 are connected.

[0085] In some embodiments, Figure 7 , Fig.12 As shown, the connecting seat 512 is provided with a guide groove 5121, and a guide bar 23 is provided in the base 2, and the guide bar 23 is arranged in the guide groove 5121. The connecting seat 512 moves in a directed manner along the guide bar 23 through the guide groove 5121, which is conducive to constraining the connecting seat 512 to move on a preset moving trajectory to ensure that the magnetic part 52 passes through the Hall sensor 31 during the movement of the connecting seat 512.

[0086] In some embodiments, Figure 11-12 As shown, the adjustment mechanism 5 further includes a second elastic member 54, the connection seat 512 is provided with a second concave cavity 5122, the second elastic member 54 is provided in the second concave cavity 5122 and abuts against the conductive block 53. Thus, when the rod body 511 is in the second position, under the action of the elastic force of the second elastic member 54, the conductive block 53 is pushed away from the concave cavity and always abuts against the first conductive block 6 and the second conductive block 7, so as to avoid the conductive block 53 from deviating from its set position due to the movement of the connection seat 512, which is conducive to the stable conduction of the first conductive block 6 and the second conductive block 7 through the conductive block 53.

[0087] In some embodiments, Fig.12As shown, the connection seat 512 is provided with two spaced-apart insertion holes 5123, which are arranged along the axis direction of the rod body 511, and the two insertion holes 5123 face the side where the first conductive block 6 and the second conductive block 7 are located. The two ends of the conductive block 53 are movably inserted into the insertion holes 5123, and the spacing between the conductive block 53 and the first conductive block 6 and the second conductive block 7 is smaller than the depth of the two ends of the conductive block 53 extending into the insertion holes 5123, thereby preventing the conductive block 53 from falling off the connection seat 512.

[0088] In some embodiments, Fig.12 As shown, the connection base 512 is also provided with a receiving groove 5124, which is located on the side of the connection base 512 facing the circuit board 3. The receiving groove 5124 is used to receive the magnetic member 52 to avoid the magnetic member 52 being directly installed on the surface of the connection base 512 and occupying too much space.

[0089] In some embodiments, Figure 4 and Fig.12 As shown, the base 2 is provided with a sealing groove 205, the sealing groove 205 surrounds the opening 204, and the opening 204 passes through the bottom of the sealing groove 205. The adjustment mechanism 5 also includes a sealing member 55, the sealing member 55 is sleeved on the rod body 511, and the sealing member 55 is embedded in the sealing groove 205, so as to improve the sealing performance between the rod body 511 and the opening 204, prevent external dust from entering the base 2 through the opening 204 to contaminate the circuit board 3, reduce the occurrence of short circuit caused by the presence of dust, and improve the safety and stability of the switch module 1.

[0090] In some embodiments, please refer again to Figure 3 The switch module 1 also includes a button 8 and an elastic reset member 9, the reset member 9 is sleeved on the rod body 511, the button 8 is arranged on the base 2 and is fixedly connected to one end of the rod body 511 away from the connecting seat 512. When the button 8 is pressed to make the rod body 511 drive the connecting seat 512 to move from the first position to the second position, the reset member 9 is compressed and in a compressed state. When the button 8 is released, the reset member 9 restores the deformation, and the button 8 drives the rod body 511 to reset. In this way, the automatic reset of the adjustment mechanism 5 can be achieved, which is convenient for the user to operate. The reset member 9 can be a spring, or a silicone member, of course, it can also be other, as long as it can achieve elastic deformation.

[0091] The connection between the button 8 and the rod body 511 can be a snap connection or a plug connection, or other methods as long as a fixed connection between the two can be achieved.

[0092] In some embodiments, Figure 5As shown, the base 2 is provided with a protrusion 24, which is located outside the accommodating cavity 201, and a guide groove 206 is constructed on the protrusion 24. The button 8 is provided with a guide block 81, and the guide block 81 is at least partially located in the guide groove 206, so that the button 8 can slide along the guide groove 206 to prevent the button 8 from moving randomly when pressed.

[0093] In some embodiments, please refer again to Figure 5 and Figure 6 , the switch module 1 further includes an aluminum substrate 10 and a flexible flat cable 11. The aluminum substrate 10 is disposed on one side of the base 2 and is disposed opposite to the circuit board 3. The two ends of the flexible flat cable 11 are respectively connected to the circuit board 3 and the aluminum substrate 10. In this way, communication between the aluminum substrate 10 and the circuit board 3 can be achieved. In this embodiment, the aluminum substrate 10 is disposed on the second base block 22. It is understandable that, limited by the specification design of the switch module 1, when the electrical components are not sufficient to be disposed on the circuit board 3 with limited size, some of the electrical components can be disposed on the aluminum substrate 10, and the circuit board 3 and the aluminum substrate 10 are connected for communication through the flexible flat cable 11, so that the specification design requirements of the switch module 1 can be met while achieving the same function.

[0094] In some embodiments, please refer again to Figure 5 and Figure 6 The switch module 1 also includes a plurality of output connection terminals 12 and a plurality of connectors 13. One end of each output connection terminal 12 is connected to the aluminum substrate 10 through the connector 13, and the other end of the output connection terminal 12 is exposed outside the base 2. The connector 13 can be connected to the output connection terminal 12 and the aluminum substrate 10 by riveting, or it can be connected by other methods, which can be set according to needs. In this embodiment, the number of output connection terminals 12 is three, and the number of connectors 13 is also three. The base 2 is provided with three connection holes 208. The three connectors 13 are connected to the output connection terminals 12 through the connection holes 208. The three output connection terminals 12 are respectively used to connect to the U phase, V phase and W phase of the motor, so as to realize the circuit board 3 to control the working state of the motor.

[0095] In some embodiments, please refer again to Figure 5 and Figure 6The switch module 1 also includes a heat sink 14, which is arranged on the base 2 and abuts against the aluminum substrate 10, so as to dissipate heat from the aluminum substrate 10, avoid the overall temperature of the switch module 1 from rising, and help improve the stability of the switch module 1. The heat sink 14 can be threadedly connected by screws, or fixed by snaps, of course, it can also be fixed by other methods, which can be set according to needs. In this embodiment, the heat sink 14 is fixedly connected to the base 2 by screws 15. Specifically, the base 2 is provided with a threaded hole 207, and the heat sink 14 is provided with an avoidance hole 141. The screw 15 passes through the avoidance hole 141 and is screwed to the threaded hole 207, thereby fixing the heat sink 14 to the base 2. In this embodiment, the heat sink 14 is arranged on the second base block 22.

[0096] In some embodiments, please refer again to Figure 5 The base 2 is provided with a positioning protrusion 25, and the heat sink 14 is provided with a positioning notch 142, which is provided on the positioning protrusion 25, so as to facilitate the rapid positioning and installation between the heat sink 14 and the base 2. Furthermore, the base 2 is also provided with a limited position insertion hole 26, and the heat sink 14 is provided with a protrusion 143, which is inserted into the limited position insertion hole 26, so as to facilitate the rapid positioning and installation of the heat sink 14 and the base 2.

[0097] In some embodiments, please refer again to Figure 5 The switch module 1 further includes a shell cover 16, which is detachably connected to the base 2 and covers the circuit board 3 to protect the circuit board 3 and prevent the outside from directly acting on the circuit board 3. It should be understood that the connection between the shell cover 16 and the base 2 can be threaded connection by screws, or fixed by buckles, or other methods, which can be set according to needs.

[0098] In some embodiments, please refer again to Figure 5 and Figure 6 The switch module 1 also includes a display light 17, which is connected to the circuit board 3 and exposed outside the base 2 through the through hole 202. The display light 17 is used to display the working status of the switch module 1, for example, whether the switch module 1 is in a power-on state or a power-off state.

[0099] In some embodiments, please refer again to Figure 6 The switch module 1 further includes an input terminal 18, which is connected to the circuit board 3 and partially exposed outside the base 2, so as to facilitate the connection of the switch module 1 with an external power source. In this embodiment, there are two input terminals 18, which are connected to the circuit board 3 at intervals and partially exposed outside the base 2.

[0100] The switch module 1 provided in the embodiment of the present application includes a base 2, a circuit board 3 and a switching mechanism 4, the base 2 is provided with a accommodating cavity 201, and the circuit board 3 is arranged on the base 2; the switching mechanism 4 includes a connecting rod assembly 42 and a switch assembly 41 accommodated in the accommodating cavity 201, the connecting rod assembly 42 is movably arranged on the base 2, and part of the connecting rod assembly 42 is located in the accommodating cavity 201; wherein, the switch assembly 41 includes a switching piece 411 and connecting pins 412 located at opposite ends of the switching piece 411, the switching piece 411 is electrically connected to the circuit board 3, and the connecting pins 412 located at opposite ends of the switching piece 411 are both electrically connected to the circuit board 3. When the connecting rod assembly 42 is in the initial position, the connecting pins 412 at the two opposite ends of the switching piece 411 have a gap with the switching piece 411. When one end of the connecting rod assembly 42 is subjected to force and placed in the forward gear, the other end of the connecting rod assembly 42 presses against the first end 4111 of the switching piece 411, and the connecting pin 412 at the first end 4111 of the switching piece 411 abuts against the switching piece 411; when the other end of the connecting rod assembly 42 is subjected to force and placed in the reverse gear, the other end of the connecting rod assembly 42 presses against the second end 4112 of the switching piece 411, and the connecting pin 412 at the second end 4112 of the switching piece 411 abuts against the switching piece 411. In this way, under the action of external force, the connecting rod assembly 42 can switch between the forward gear and the reverse gear, so that the switching piece 411 abuts against the connecting pins 412 at different positions, so that different circuits in the circuit board 3 are connected to the motor, thereby controlling the forward or reverse rotation of the motor.

[0101] Another embodiment of the present application provides an electric tool, which includes the switch module 1 in the above embodiment. The electric tool includes but is not limited to an electric drill, an electric wrench, an electric screwdriver, an electric stirrer, and the like.

[0102] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A switch module, characterized in that: include: The base is provided with a receiving cavity, A circuit board is arranged on the base; A switching mechanism comprising a connecting rod assembly and a switch assembly housed in the accommodating cavity, wherein the connecting rod assembly is movably disposed on the base, and a portion of the connecting rod assembly is located within the accommodating cavity; wherein the switch assembly comprises a switching plate and connecting pins located at opposite ends of the switching plate, the switching plate being electrically connected to the circuit board, and the connecting pins located at opposite ends of the switching plate being connected to the circuit board; When the connecting rod assembly is in the initial position, the connecting pins at the opposite ends of the switching plate have a gap with the switching plate; when one end of the connecting rod assembly is subjected to force and is placed in the forward gear, the other end of the connecting rod assembly presses against the first end of the switching plate, and the connecting pin located at the first end of the switching plate abuts against the switching plate; when one end of the connecting rod assembly is subjected to force and is placed in the reverse gear, the other end of the connecting rod assembly presses against the second end of the switching plate, and the connecting pin located at the second end of the switching plate abuts against the switching plate.

2. The switch module according to claim 1, characterized in that: The switching piece has elastic deformation performance. When the connecting rod assembly presses the end of the switching piece, the end of the switching piece will be deformed by the pressure and abut against the connecting pin.

3. The switch module according to claim 1, characterized in that: The switching piece includes a first tilting portion, a second tilting portion and a middle portion that are connected to each other, wherein the first tilting portion and the second tilting portion are tilted toward the same side relative to the middle portion, wherein the middle portion is rotatably arranged on the base and electrically connected to the circuit board.

4. The switch module according to claim 3, characterized in that: The first tilted portion and the second tilted portion each include a tilted section and a flat section connected to each other, one end of the tilted section is connected to the middle portion, and the other end of the tilted section is connected to the flat section.

5. The switch module according to any one of claims 1 to 4, characterized in that: The switch assembly also includes a mounting block, the base is provided with a slot, and the mounting block is snapped into the slot, wherein the mounting block has a base surface facing the switching piece, and the mounting block is provided with a supporting portion protruding from the base surface toward the switching piece, and the switching piece is movably provided on the supporting portion, and the connecting feet located at opposite ends of the switching piece are provided on the mounting block and partially expose the base surface.

6. The switch module according to claim 5, characterized in that: The switch assembly also includes a limit block, the supporting portion is provided with a groove, the limit block is arranged in the groove, wherein the limit block is provided with limit protrusions on opposite sides, and the switching piece is provided on the limit block and is clamped on the limit protrusions.

7. The switch module according to claim 1, characterized in that: The connecting rod assembly includes a joystick, a first elastic member, and a pressure head. The joystick is movably arranged on the base. The joystick includes a first movable end and a second movable end. The first movable end is arranged outside the accommodating cavity, and the second movable end is arranged inside the accommodating cavity. The second movable end is provided with a first concave cavity. The first elastic member is accommodated in the first concave cavity. The pressure head is connected to an end of the first elastic member away from the first concave cavity. When the first movable end is subjected to force and is placed in the forward gear position, the second movable end drives the pressure head to move and press the first end of the switching piece, and the connecting foot located at the first end of the switching piece abuts against the switching piece; when the second movable end is subjected to force and is placed in the reverse gear position, the second movable end drives the pressure head to move and press the second end of the switching piece, and the connecting foot located at the second end of the switching piece abuts against the switching piece.

8. The switch module according to claim 1, characterized in that: It also includes an adjustment mechanism, which is movably arranged on the base and is used to control the circuit board to output an adjustment signal to control the working state of the motor.

9. The switch module according to claim 8, characterized in that: The adjustment mechanism includes a movable rod, a magnetic member, and a conductive guide block. The base is provided with an opening. The movable rod includes a rod body and a connecting seat. The connecting seat is located in the accommodating cavity. One end of the rod body is connected to the connecting seat. The other end of the rod body passes through the opening and is exposed outside the base. The guide block is provided on one side of the connecting seat. The magnetic member is provided on the connecting seat. The circuit board is provided with a Hall sensor. The switch module further includes a first conductive block and a second conductive block, the first conductive block and the second conductive block being spaced apart and arranged in the accommodating cavity, the first conductive block and the second conductive block being connected to the circuit board and located on the same side of the movable rod, and the first conductive block and the second conductive block being arranged side by side along the axis direction of the rod body; When the rod body is subjected to force to drive the connecting seat to move from the first position to the second position, the two ends of the conductive block respectively abut against the first conductive block and the second conductive block, and the distance between the magnetic member and the Hall sensor is shortened.

10. An electric tool, characterized in that: The invention comprises a switch module according to any one of claims 1 to 9.

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