Integrated switch

Abstract

The utility model discloses an integrated switch. The integrated switch is characterized in that a body is provided with a cavity; the movable frame is contained in the cavity, a switch elastic piece and a speed regulation elastic piece are fixed to the movable frame, and the switch elastic piece and the speed regulation elastic piece are arranged up and down. The power PCB is accommodated in the cavity, a switch tube and a capacitor are fixed on the power PCB, and the capacitor is close to the switch tube; the control PCB is accommodated in the cavity, the control PCB is electrically connected with the power PCB, a switch contact piece and a speed regulation contact piece are fixed on the control PCB, the switch contact piece is matched with the switch elastic piece, and the speed regulation contact piece is matched with the speed regulation elastic piece; according to the arrangement, loop impedance and equivalent inductance can be effectively reduced, and particularly, power and partial filtering effect can be improved under high-power application. When the switch tube works in the modulation process, the connection end of the inductive tool can generate reverse electromotive force by frequently switching on and switching off the switch tube, and peak voltage generated by the reverse electromotive force can be effectively filtered out by close placement of the capacitors, so that the switch tube and rear-end elements are protected, the structure is compact, and the universality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, and particularly relates to an integrated switch. Background Art

[0002] An integrated switch specifically refers to a switch for a power tool used for an electric motor, and realizes functions such as switching, speed regulation, and commutation of the power tool.

[0003] In the existing integrated switch, an MOS transistor is provided on its internal circuit board. However, due to the limitation of the internal space, the capacitor connected to the MOS is arranged on the outer side far from the main body part of the integrated switch. However, the problem with this structure is that the volume of the product is relatively large, the distance between the capacitor and the MOS transistor is too long, resulting in an increase in impedance and affecting the response speed of the entire circuit. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is how to reduce the impedance and reduce the volume of the switch to improve the adaptability and versatility of the product. For this purpose, an integrated switch includes:

[0005] A main body, wherein the main body is provided with a chamber;

[0006] A movable frame, the movable frame is accommodated in the chamber, the movable frame is fixed with a switch spring piece and a speed regulation spring piece, and the switch spring piece and the speed regulation spring piece are arranged up and down;

[0007] A power PCB board, the power PCB board is accommodated in the chamber, the power PCB board is fixed with a switch tube and a capacitor, and the capacitor is close to the switch tube;

[0008] A control PCB board, the control PCB board is accommodated in the chamber, the control PCB board is electrically connected to the power PCB board, the control PCB board is fixed with a switch contact piece and a speed regulation contact piece, the switch contact piece cooperates with the switch spring piece, and the speed regulation contact piece cooperates with the speed regulation spring piece.

[0009] The main body is provided with a notch, and the capacitor extends towards the notch.

[0010] The number of the capacitors is two, and the two capacitors are located on one side of the lower end of the movable frame.

[0011] It further includes a motor wire, the motor wire is electrically connected to the power PCB board, and the motor wire and the capacitor are located on the same side of the power PCB board.

[0012] It further includes a hanging buckle, and the hanging buckle cooperates with the motor wire.

[0013] It further includes an elastic connector, one end of the elastic connector is electrically connected to the power PCB board, and the other end of the elastic connector is electrically connected to the control PCB board.

[0014] The body is provided with a plurality of positioning cavities, and each positioning cavity is fixedly provided with one of the elastic connectors.

[0015] The body is provided with a glue filling port, there is a gap between the power PCB board and the rear side of the chamber, and the gap communicates with the glue filling port.

[0016] The body includes a base, the gap is arranged between the base and the power PCB board, and the base is made of metal.

[0017] It further includes a power indication PCB board, and the power indication PCB board is electrically connected to the power PCB board.

[0018] The technical solution of the present utility model has the following advantages:

[0019] 1. An integrated switch provided by the present utility model, when the size of the switch body is similar to the conventional size, by fixing the switch elastic piece and the speed regulation elastic piece on the same movable frame, the chamber can reserve space for fixing capacitors, and the capacitors are close to the switching tube. This setting can effectively reduce the loop impedance and equivalent inductance, especially in high-power applications, it can improve the power and partial filtering effect; when the switching tube is working in the modulation process, frequently turning on and off the switching tube will generate a back electromotive force at the connecting end of the inductive tool, and placing the capacitors close can effectively filter out the spike voltage generated by the back electromotive force, thereby protecting the switching tube and the subsequent components from overvoltage damage; this kind of structure is compact and has good versatility.

[0020] 2. An integrated switch provided by the present utility model, the capacitors are arranged at the notch, making full use of the limited space of the switch body, making the structure more compact, facilitating the miniaturization of the product, and having good general adaptability.

[0021] 3. An integrated switch provided by the present utility model, the limitation of the capacitor position makes the layout of the circuit components of the switch more reasonable, and in the limited space, each internal structure can be optimally configured, further improving the response speed of the entire circuit.

[0022] 4. An integrated switch provided by the present utility model, the motor wire adopts this connection position, making full use of the limited space of the switch body, making the structure more intensive, facilitating the miniaturization of the product, and having good general adaptability.

[0023] 5. An integrated switch provided by the present utility model, the hanging buckle forms a fixing effect on the motor wire, making the routing direction of the motor wire smooth and facilitating wiring; at the same time, straightening and fixing the motor wire also facilitates improving the storage efficiency.

[0024] 6. An integrated switch provided by the present utility model, with the elastic connecting member provided, playing an elastic buffering role, and better realizing the electrical connection effect between two PCB boards. Here, the elastic connecting member is specifically a spring.

[0025] 7. An integrated switch provided by the present utility model, the positioning cavity plays a fixing and guiding effect, can better realize fixing, and adjacent two positioning cavities can also play an electrical isolation effect.

[0026] 8. An integrated switch provided by the present utility model, here epoxy resin is filled into the gap through the potting port to form the protection effect of the switch tube and the overall sealing effect. At the same time, it also has a certain shock absorption effect.

[0027] 9. An integrated switch provided by the present utility model, the base is made of metal material, which can play a heat conduction effect.

[0028] 10. An integrated switch provided by the present utility model, the power indication PCB board forms the power indication effect. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of an integrated switch provided by the present utility model;

[0031] Figure 2 It is a front view of an integrated switch provided by the present utility model;

[0032] Figure 3 It is an exploded view of an integrated switch provided by the present utility model;

[0033] Figure 4 It is a schematic structural diagram of a movable frame provided by the present utility model;

[0034] Figure 5 It is a schematic structural diagram of a control PCB board provided by the present utility model;

[0035] Figure 6 It is a schematic structural diagram of a power PCB board provided by the present utility model.

[0036] Description of the Reference Numerals:

[0037] 11. Body; 12. Movable frame; 13. Power PCB board; 14. Control PCB board; 15. Upper cover; 16. Middle seat; 17. Base; 18. Motor wire; 19. Hanging buckle; 20. Commutation shrapnel; 21. Button; 22. Elastic connecting piece; 23. Battery level indicating PCB board; 111. Chamber; 112. Notch; 113. Positioning chamber; 114. Glue filling port; 121. Switch shrapnel; 122. Speed regulation shrapnel; 131. Switch tube; 132. Capacitor; 141. Switch contact piece; 142. Speed regulation contact piece. Detailed implementation manners

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1

[0043] This embodiment provides an integrated switch, as shown in the attached Figures 1-6 figure, including:

[0044] A body 11, and the body 11 is provided with a chamber 111;

[0045] The movable frame 12 is accommodated in the chamber 111. In this embodiment, the movable frame 12 extends upward, and the movable frame 12 is slidably arranged relative to the main body 11, that is, the movable frame 12 can move up and down relative to the main body 11. The movable frame 12 is fixed with a switch elastic piece 121 and a speed regulation elastic piece 122. The switch elastic piece 121 and the speed regulation elastic piece 122 are arranged up and down. The switch elastic piece 121 is located above the speed regulation elastic piece 122, or the speed regulation elastic piece 122 is located above the switch elastic piece 121.

[0046] The power PCB board 13 is accommodated in the chamber 111. The power PCB board 13 is fixed with a switch tube 131 and a capacitor 132. The capacitor 132 is close to the switch tube 131. Here, the capacitor 132 specifically refers to the capacitor 132 that cooperates with the switch tube 131. In this embodiment, the capacitor 132 is a plug-in type, specifically an electrolytic capacitor 132.

[0047] The control PCB board 14 is accommodated in the chamber 111. The control PCB board 14 is electrically connected to the power PCB board 13. A connection between the power supply and communication is formed between the control PCB board 14 and the power PCB board 13 to form a control effect. The control PCB board 14 is fixed with a switch contact piece 141 and a speed regulation contact piece 142. The switch contact piece 141 cooperates with the switch elastic piece 121 to turn on or off the electric device; the speed regulation contact piece 142 cooperates with the speed regulation elastic piece 122, and the speed regulation contact piece 142 forms a speed regulation effect for the electric device. When the sizes of the conventional dimensions of the switch main body are similar, by fixing the switch elastic piece 121 and the speed regulation elastic piece 122 on the same movable frame 12, the chamber 111 can reserve a space for fixing the capacitor 132, and the capacitor 132 is close to the switch tube 131. This setting can effectively reduce the loop impedance and equivalent inductance, especially improve the power and partial filtering effect under high-power applications; when the switch tube 131 is working in the modulation process, frequently turning on and off the switch tube 131 will generate a back electromotive force at the connecting end of the inductive tool. Placing the capacitor 132 close can effectively filter the spike voltage generated by the back electromotive force, thereby protecting the switch tube 131 and the rear-end components from overvoltage damage; this structure is compact and has good versatility.

[0048] Specifically, as shown in the appendix Figure 3 The main body 11 includes an upper cover 15, a middle seat 16 and a base 17. In this embodiment, the upper cover 15 is located at the front side, the middle seat 16 is located between the upper cover 15 and the base 17, and the base 17 is located at the rear side. Here, the connection methods between the upper cover 15 and the middle seat 16, and between the middle seat 16 and the base 17 can be bolt connection or snap connection. The upper cover 15, the middle seat 16 and the base 17 cooperate to form the chamber 111. In this embodiment, front and rear specifically refer to the Y-axis direction, up and down specifically refer to the Z-axis direction, and left and right specifically refer to the X-axis direction.

[0049] Specifically, the main body 11 is provided with a notch 112, and the capacitor 132 extends towards the notch 112. The capacitor 132 is arranged at the notch 112, making full use of the limited space of the switch body, making the structure more compact, facilitating the miniaturization of the product, and having good general adaptability. Here, the notch 112 is arranged on the upper cover 15, that is, the capacitor 132 extends forward. At this time, the capacitor 132 can extend beyond the upper cover 15, or the capacitor 132 can be flush with the upper cover 15, and this can be adjusted according to the actual height of the capacitor 132.

[0050] Specifically, as shown in the attached Figures 1-3 As shown in FIGS. 6, the number of capacitors 132 is two, and the two capacitors 132 are located on one side of the lower end of the movable frame 12. In this embodiment, the two capacitors 132 are located on the left side of the lower end of the movable frame 12, and those skilled in the art can also adjust them to the right side. The limitation of the position of the capacitor 132 makes the layout of the circuit components of the switch more reasonable. In the limited space, each internal structure is optimally configured, and further, the reaction speed of the entire circuit is also improved. In addition, the number and power of the capacitor 132 can also be adjusted.

[0051] Specifically, as shown in the attached Figures 1-3 As shown in the figure, it further includes a motor wire 18, and the motor wire 18 is electrically connected to the power PCB board 13. The motor wire 18 and the capacitor 132 are located on the same side of the power PCB board. By adopting this connection position for the motor wire 18, the limited space of the switch body is fully utilized, making the structure more intensive, facilitating the miniaturization of the product, and having good general adaptability.

[0052] Specifically, the other end of the motor wire 18 passes through the notch 112 and extends towards the outside.

[0053] Specifically, as shown in the attached Figures 1-3 As shown in the figure, it further includes a buckle 19, and the buckle 19 cooperates with the motor wire 18. The buckle 19 forms a fixing effect on the motor wire 18, making the routing direction of the motor wire 18 smooth and facilitating wiring; at the same time, the motor wire 18 is straightened and fixed, which is also convenient for improving the storage efficiency. Here, the buckle 19 is arranged on the upper cover 15, that is, one end of the motor wire 18 is electrically connected to the power PCB board 13, the other end of the motor wire 18 passes through the notch 112 and cooperates with the buckle 19, and then extends towards the outside.

[0054] Specifically, it further includes a commutation mechanism. The commutation mechanism includes a commutation elastic piece 20. The commutation mechanism is accommodated in the chamber 111, and the commutation mechanism is used for commutation operation. When the commutation mechanism operates, the commutation elastic piece 20 slides on the commutation contact piece on the power PCB board 13 to achieve the commutation function. This is the prior art, so in this embodiment, it will not be described in detail.

[0055] Specifically, as shown in the attached Figures 1-3As shown, the button 21 is located above the main body 11. The button 21 cooperates with the upper end of the movable frame 12 to form a linkage effect. Here, the upper end specifically refers to the Z-axis direction.

[0056] Specifically, as shown in the appendix Figures 1-3 As shown, it further includes an elastic connecting member 22. One end of the elastic connecting member 22 is electrically connected to the power PCB board 13, and the other end of the elastic connecting member 22 is electrically connected to the control PCB board 14. The setting of the elastic connecting member 22 plays an elastic buffering role and better realizes the electrical connection effect between the two PCB boards. Here, the elastic connecting member 22 is specifically a spring, and the number of elastic connecting members 22 can be adjusted according to actual needs.

[0057] Specifically, as shown in the appendix Figure 3 As shown, the main body 11 is provided with a plurality of positioning cavities 113, and each positioning cavity 113 is fixedly provided with an elastic connecting member 22. The positioning cavity 113 plays a role in fixing and guiding, and the adjacent two positioning cavities 113 can also play an electrical isolation effect. In this embodiment, the positioning cavity 113 is arranged on the middle seat 16, that is, one end of the elastic connecting member 22 abuts against the power PCB board 13 to form an electrical connection, and the other end of the elastic connecting member 22 passes through the middle seat 16 and abuts against the control PCB board 14 to form an electrical connection.

[0058] Specifically, as shown in the appendix Figures 1-2 As shown, the main body 11 is provided with a potting port 114. There is a gap between the power PCB board 13 and the rear side of the chamber 111, and the gap is communicated with the potting port 114. Here, epoxy resin is filled into the gap through the potting port 114 to form a protection effect for the switching tube 131 and an overall sealing effect. At the same time, it also has a certain shock absorption effect.

[0059] Specifically, the gap is arranged between the base 17 and the power PCB board 13, and the base 17 is made of metal. The base 17 made of metal can play a heat conduction effect.

[0060] Specifically, as shown in the appendix Figure 6 As shown, the switching tube 131 is located on the side of the power PCB board 13 facing the base 17, that is, the switching tube 131 is located on the rear side of the power PCB board 13. When potting is performed, the epoxy resin will fill and wrap the switching tube 131.

[0061] Specifically, the switching tube 131 can be a MOS tube or a triode, etc., and those skilled in the art can adjust according to actual needs.

[0062] Specifically, it further includes a power indication PCB board 23, and the power indication PCB board 23 is electrically connected to the power PCB board 13. The power indication PCB board 23 forms the effect of power indication. Here, the power indication PCB board 23 is located outside the chamber 111, and the electrical connection effect between the power indication PCB board 23 and the power PCB board is formed through wires or other electrical components.

[0063] Specifically, in addition to this, a Hall connector is also fixed on the power PCB board 13, and other sealing structures are also provided in the chamber 111, which are not related to this embodiment, so no further description will be given.

[0064] Obviously, the above embodiments are only examples given for clear illustration, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An integrated switch, characterized in that, Comprising: A body (11), the body (11) being provided with a chamber (111); A movable frame (12), the movable frame (12) being received in the chamber (111), a switch elastic piece (121) and a speed regulation elastic piece (122) being fixed on the movable frame (12), the switch elastic piece (121) and the speed regulation elastic piece (122) being arranged one above the other; A power PCB board (13), the power PCB board (13) being received in the chamber (111), a switching tube (131) and a capacitor (132) being fixed on the power PCB board (13), the capacitor (132) being close to the switching tube (131); A control PCB board (14), the control PCB board (14) being received in the chamber (111), the control PCB board (14) being electrically connected to the power PCB board (13), a switch contact piece (141) and a speed regulation contact piece (142) being fixed on the control PCB board (14), the switch contact piece (141) cooperating with the switch elastic piece (121), and the speed regulation contact piece (142) cooperating with the speed regulation elastic piece (122).

2. The integrated switch according to claim 1, wherein The body (11) is provided with a notch (112), and the capacitor (132) extends towards the notch (112).

3. The integrated switch according to claim 1, wherein The number of the capacitors (132) is two, and the two capacitors (132) are located on one side of the lower end of the movable frame (12).

4. The integrated switch according to claim 1, characterized in that, It further includes a motor wire (18), the motor wire (18) being electrically connected to the power PCB board (13), and the motor wire (18) and the capacitor (132) being located on the same side of the power PCB board (13).

5. The integrated switch according to claim 4, characterized in that, It further includes a hanging buckle (19), the hanging buckle (19) cooperating with the motor wire (18).

6. The integrated switch according to claim 1, characterized in that It further includes an elastic connecting piece (22), one end of the elastic connecting piece (22) being electrically connected to the power PCB board (13), and the other end of the elastic connecting piece (22) being electrically connected to the control PCB board (14).

7. The integrated switch according to claim 6, wherein The body (11) is provided with a plurality of positioning cavities (113), and each positioning cavity (113) is correspondingly fixed with one elastic connecting piece (22).

8. The integrated switch according to claim 1, wherein The body (11) is provided with a potting port (114), a gap is provided between the power PCB board (13) and the rear side surface of the chamber (111), and the gap communicates with the potting port (114).

9. The integrated switch according to claim 8, characterized in that, The body (11) includes a base (17), the gap is provided between the base (17) and the power PCB board (13), and the base (17) is made of a metal material.

10. The integrated switch according to claim 1, characterized in that, It further includes a power indication PCB board (23), the power indication PCB board (23) being electrically connected to the power PCB board (13).

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