Direct-current brushless integrated switch with wiring module

Abstract

The utility model relates to the technical field of electric tool switches, and specifically discloses a DC brushless integrated switch with a wiring module. The utility model discloses a power module which comprises a shell, an actuating mechanism and a power module, the actuating mechanism and the power module are arranged in the shell, the power module comprises a power PCB and a power switch arranged on the power PCB, the power PCB is provided with a wiring terminal, and the wiring terminal is used for electrically connecting an external wire with the power switch. According to the utility model, the wiring terminals are arranged, so that the product main body can be firstly assembled, and then wires with different lengths can be customized and connected according to the requirements of users, and therefore, the adaptability of the integrated switch product is better; an external wire is connected to the wiring terminal, so that the wire is convenient to disassemble and assemble, and no adverse influence is caused on the switch main body and the circuit board; and full-automatic production can be carried out in the product assembly process before wiring, so that the assembly efficiency of the product is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tool switches, and specifically discloses a DC brushless integrated switch with a wiring module. Background Art

[0002] Brushless DC integrated switch, also known as electronic commutator, is an electronic device used to drive brushless DC motors. It is mainly used to convert DC power into AC power to control the speed and direction of the motor. Brushless DC integrated switch has the advantages of high efficiency, reliability, precision control, etc., and is widely used in power tools, household appliances, automotive industry and other fields.

[0003] The DC brushless integrated switch needs to be connected with wires for current and signal transmission. For example, patent CN114188171A discloses a DC brushless integrated DC speed regulating switch, which integrates the intelligent speed regulating function and the control protection function on the circuit board assembly of the switch, and realizes conduction by welding the input wire and the output wire.

[0004] However, in this type of existing switch, the external wires are directly welded on the circuit board, which will have the following defects:

[0005] 1) During the product assembly process, the wires must be soldered to the circuit board first, and the wire length required by the user cannot be customized according to the user's needs;

[0006] 2) After the wires are soldered to the circuit board, glue will be poured on the surface of the circuit board to protect the components and circuits on the circuit board from the influence of the external environment. If the wires on the product need to be replaced, the glue must be destroyed to replace the wires, which is very difficult to operate and will damage the circuit board to a great extent.

[0007] 3) The wires need to be manually soldered on the circuit board, which is done in the middle of the process, so that full automation cannot be achieved in the product assembly process, because manual soldering interrupts the possibility of full automation.

[0008] Therefore, further research and development and improvement are needed to address the above-mentioned defects of the existing DC brushless integrated switches. Utility Model Content

[0009] The utility model aims to overcome the deficiencies of the prior art and provide a DC brushless integrated switch with a wiring module.

[0010] The utility model discloses a DC brushless integrated switch with a wiring module, which adopts the following technical solution:

[0011] A DC brushless integrated switch with a wiring module comprises: a housing, an actuating mechanism and a power module arranged in the housing, the power module comprises a power PCB and a power switch arranged on the power PCB, the power PCB is provided with a wiring terminal, and the wiring terminal is used to electrically connect an external wire to the power switch.

[0012] Preferably, the connection between the wiring terminal and the external wire is welding or detachable connection.

[0013] Preferably, a terminal bracket is provided on the wiring terminal, and the wiring terminal passes through the top of the terminal bracket and is welded to an external wire.

[0014] Preferably, the terminal support comprises a terminal support portion and a wire support portion, the top end of the wiring terminal is arranged on the terminal support portion, the wire support portion is arranged on the outer side of the terminal support portion, and the external wire is placed on the surface of the wire support portion.

[0015] Preferably, there are a plurality of the wiring terminals, a plurality of terminal support parts for accommodating the wiring terminals are provided on the terminal bracket, and partitions are provided between adjacent terminal support parts.

[0016] Preferably, a welding portion is provided at the top end of the wiring terminal, and the welding portion is bent transversely above the terminal supporting portion.

[0017] Preferably, the terminal bracket is buckled with the shell, and the terminal bracket and the shell fix the power PCB board inside.

[0018] Preferably, the wiring terminal is provided with a wire through hole, and the external wire is connected to the wiring terminal by passing through the wire through hole. The wiring terminal is provided with a threaded hole, and the threaded hole is connected to the wire through hole. The threaded hole is connected with a screw, and the screw fixes the external wire to the wiring terminal.

[0019] Preferably, a connecting portion is provided on the wiring terminal, a terminal connecting hole is provided on the power PCB, the connecting portion is fixed to the power PCB through the terminal connecting hole, and the connecting portion is electrically connected to the power switch.

[0020] Preferably, a glue potting layer is provided on the power PCB, the connection ends of the wiring terminals and the power PCB are covered by the glue potting layer, and the tops of the wiring terminals are exposed outside the glue potting layer.

[0021] Preferably, the shell includes a cover shell and a heat dissipation shell, the power PCB is arranged in the heat dissipation shell, the heat dissipation shell has a closed part and an open part, the closed part and the cover shell are buckled to form a closed area, and the power switch and the connection terminals are arranged in the open part of the heat dissipation shell.

[0022] Preferably, a speed regulation module is further included, the speed regulation module includes a signal PCB board, a brush and a copper foil arranged on the signal PCB board, the signal PCB board is electrically connected to the power PCB board, the signal PCB board is arranged in the cover shell, and the actuating mechanism drives the brush to move on the copper foil of the signal PCB board to realize the speed regulation function.

[0023] Preferably, the actuating mechanism comprises a trigger and a movable frame, the brush is arranged on the movable frame, and moves with the movable frame, and the brush moves on the copper foil of the signal PCB board to realize the speed regulation function.

[0024] Preferably, a reversing mechanism is also included, which includes a swing button and a reversing spring. The reversing spring is arranged on the swing button and contacts or disconnects with the copper foil on the power PCB board as the swing button rotates, thereby realizing the reversing function of the motor.

[0025] Compared with the prior art, the utility model has at least the following beneficial effects:

[0026] 1. The external wires are connected at the last stage of the integrated switch product assembly process. In this way, the main body of the integrated switch product can be assembled first without welding the wires. The integrated switch products without wires can be stored in the warehouse in advance. Later, wires of different lengths can be customized according to user needs, and then the wires can be connected to the integrated switch products. The integrated switch products have better adaptability and are easier to manage in inventory.

[0027] 2. The external wires are connected to the wiring terminals, so that the wire connection ends are raised and away from the surface of the circuit board. Whether it is welded or screwed, it is very convenient to disassemble and install the wires, which will not cause adverse effects on the switch body and the circuit board, and is convenient for rework and maintenance of integrated switch products;

[0028] 3. Since the wires are manually wired in the final stage of the integrated switch product assembly, the integrated switch product assembly process before wiring can be fully automated, which improves the assembly efficiency of the integrated switch product and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a brushless DC integrated switch with a wiring module according to Example 1;

[0030] Figure 2This is a schematic diagram of the structure of a power PCB board of a brushless DC integrated switch with a wiring module according to Example 1;

[0031] Figure 3 It is a schematic diagram of the closed part and the open part of the DC brushless integrated switch with the wiring module of Example 1;

[0032] Figure 4 It is a structural schematic diagram of the DC brushless integrated switch with a wiring module of Example 1 with the housing removed;

[0033] Figure 5 This is a schematic structural diagram of a terminal bracket of a brushless DC integrated switch with a wiring module according to Example 1;

[0034] Figure 6 This is a schematic diagram of the connection between the wiring terminals of the brushless DC integrated switch with a wiring module and the power PCB board of Example 1;

[0035] Figure 7 This is a schematic diagram of the wiring terminal structure of the brushless DC integrated switch with a wiring module according to Example 1;

[0036] Figure 8 This is a schematic structural diagram of a wiring module and a power PCB board of a DC brushless integrated switch with a wiring module according to Example 1;

[0037] Fig. 9 It is a structural schematic diagram of a brushless DC integrated switch with a wiring module according to Example 2;

[0038] Fig.10 This is a schematic diagram of the connection between the wiring terminals of the brushless DC integrated switch with a wiring module and the power PCB board of Example 2;

[0039] Fig.11 This is a schematic structural diagram of a wiring terminal of a brushless DC integrated switch with a wiring module according to Example 2;

[0040] Fig.12 This is a schematic structural diagram of the wiring terminal of the brushless DC integrated switch with a wiring module in Example 2 from another angle.

[0041] Description of Figure Numbers:

[0042] 1. Power PCB board; 101. Terminal connection hole; 2. Power switch; 3. Wiring terminal; 31. Connecting part; 32. Welding part; 33. Wire through hole; 34. Threaded hole; 4. Terminal bracket; 41. Terminal support part; 42. Wire support part; 43. Partition; 44. Guide plate; 5. Screw; 51. Anti-slip gasket; 6. Heat dissipation shell; 61. Enclosed part; 62. Open part; 7. Cover shell; 8. Swing button; 9. Trigger; 10. Movable frame; 11. Signal PCB board. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] Example 1

[0045] A DC brushless integrated switch with a wiring module, referring to Figure 1-8 , which includes a housing and an actuating mechanism, a reversing mechanism, a speed regulating module, a power module and a wiring module arranged in the housing. The power module includes a power PCB board 1 and a power switch 2 arranged on the power PCB board 1, and the wiring module includes a wiring terminal 3 arranged on the power PCB board 1, the wiring terminal 3 is fixed on the power PCB board 1, and the wiring terminal 3 is used to electrically connect an external wire with the power switch 2, and the connection end of the wiring terminal 3 with the external wire forms a certain height with the surface of the power PCB board.

[0046] In this embodiment, the connection mode of the connection terminal 3 and the external wire is welding and fixing. The terminal bracket 4 is provided on the connection terminal 3, and the connection terminal 3 passes through the top of the terminal bracket 4 and is welded with the external wire. The terminal bracket 4 enhances the connection stability of the connection terminal 3. By arranging the connection terminal 3 on the power PCB board 1, not only the external wire can be welded in the final stage of the assembly of the integrated switch product, so that the wires of different lengths can be customized according to the order requirements after the product is produced, which is conducive to improving the adaptability of the product and facilitating inventory management. Moreover, the assembly process of the integrated switch product before wiring can be fully automated, and there is no need to disconnect the automated production line due to manual wiring in the middle, thereby improving the assembly efficiency of the integrated switch product and reducing the production cost. In addition, the connection terminal 3 makes the connection end of the wire rise and leave the surface of the power PCB board 1, so that the wire welding process will not have an adverse effect on the switch body or the power PCB board 1, so as to facilitate the rework and maintenance of the integrated switch product and improve the product yield.

[0047] In this embodiment, refer to Figure 5 The terminal bracket 4 includes a terminal supporting portion 41 and a wire supporting portion 42. The top end of the terminal 3 is arranged on the terminal supporting portion 41, and the wire supporting portion 42 is arranged on the outer side of the terminal supporting portion 41. The external wire is placed on the surface of the wire supporting portion 42, so that the external wire is properly arranged after welding, which not only avoids the wire head floating up and down during welding and improves welding efficiency, but also improves the wire connection reliability and increases the service life of the product.

[0048] In this embodiment, there are multiple connecting terminals 3, and the terminal bracket 4 is provided with multiple terminal support parts 41 for accommodating the connecting terminals 3. Partitions 43 are provided between adjacent terminal support parts 41, so that the insulation between each connecting terminal 3 is better, thereby improving the wiring reliability of the product.

[0049] In this embodiment, a guide plate 44 is preferably provided on the wire support portion 42, and a wiring gap is formed on the edge of the wire support portion 42 on one side of the guide plate 44. The external wire is placed on the wire support portion 42 through the wiring gap. The guide plate 44 serves to limit the external wire, so that the external wire is more stably arranged on the surface of the wire support portion 42, further improving the reliability of the wire connection. The external wire can be quickly put into place and cooperate with the corresponding terminal 3, further improving the welding efficiency of the wire.

[0050] In this embodiment, refer to Figure 7 A welding portion 32 is provided at the top of the terminal 3. After the external wire is welded to the welding portion 32 of the terminal 3, the welding portion 32 can be bent laterally above the terminal support portion 41. By setting the welding portion 32 to a certain height, convenient and quick welding can be achieved. Moreover, the bendable structure of the welding portion 32 allows the welding point of the terminal 3 to be received under the welding portion 32, thereby protecting the welding point and helping to reduce the thickness of the shell, making it more compact.

[0051] In this embodiment, a connection portion 31 is provided on the connection terminal 3, a terminal connection hole 101 is provided on the power PCB board 1, and the terminal connection hole 101 is arranged on one side of the power switch 2. The connection portion 31 is fixed on the power PCB board 1 through the terminal connection hole 101 and is electrically connected to the power switch 2. By providing the connection portion 31 and the terminal connection hole 101, the connection terminal 3 can be more firmly fixed on the power PCB board 1, thereby maintaining a more stable and reliable electrical connection with the power switch 2.

[0052] After the connection terminals 3 are assembled and connected, a glue potting layer is provided on the power PCB board 1, and the glue potting layer plays the role of dust and moisture prevention, shock and vibration prevention, and insulation protection. By setting the connection terminals 3, the wiring position is raised, which is different from the products directly welded on the circuit board. When the wire needs to be replaced, the wire can be removed or welded without destroying the glue potting layer, and the circuit board will not be damaged, thereby improving the production efficiency and product yield.

[0053] In this embodiment, the housing includes a heat dissipation shell 6 and a cover shell 7. The power PCB board 1 is arranged in the heat dissipation shell 6. The heat dissipation shell 6 has a closed portion 61 and an open portion 62. Figure 1 and Figure 3The closed portion 61 is buckled with the cover shell 7 to form a closed area, the power switch 2 and the wiring terminal 3 are arranged in the open portion 62 of the heat dissipation shell 6, and the power switch 2 is located on the side of the power PCB board 1 facing the heat dissipation shell 6, and the wiring terminal 3 is located on the side of the power PCB board 1 exposed to the outside. By arranging the wiring module in the open portion 62 of the heat dissipation shell 6, it is convenient for personnel to perform wiring operations and improve installation efficiency.

[0054] In this embodiment, the terminal bracket 4 is buckled with the heat dissipation shell 6, and the terminal bracket 4 and the heat dissipation shell 6 fix the power PCB board 1 inside, so that the terminal bracket 4 not only enhances the connection stability of the terminal block 3, but also enables the power PCB board to be more firmly installed in the heat dissipation shell, thereby improving the service life of the product.

[0055] In this embodiment, the reversing mechanism includes a pendulum 8 and a reversing spring. The reversing spring is arranged on the pendulum 8. As the pendulum 8 rotates, it contacts or disconnects with the copper foil on the power PCB board 1 to realize the reversing function of the motor; the actuating mechanism includes a trigger 9 and a movable frame 10. The brush is arranged on the movable frame 10; the speed regulating module includes a signal PCB board 11, a brush and a copper foil arranged on the signal PCB board 11. The brush moves on the copper foil of the signal PCB board 11 as the movable frame 10 moves to realize the speed regulating function; the signal PCB board 11 is arranged in a closed area between the heat dissipation shell 6 and the cover shell 7, and the signal PCB board 11 is electrically connected to the power PCB board 1. By separating the speed regulating module from the power module, it is not only conducive to better heat dissipation, but also can optimize the layout of the wiring module, which is convenient for wiring operation. In other embodiments, the actuating mechanism, the reversing mechanism and the speed regulating module can also be other structures, which will not be repeated here.

[0056] Example 2

[0057] The only difference between this embodiment and the first embodiment is that the connection between the connection terminal 3 and the external wire is fixed by screws.

[0058] Reference Figure 9-12 The wiring terminal 3 is provided with a wire through hole 33, and the external wire is connected to the wiring terminal 3 by passing through the wire through hole 33. The wiring terminal 3 is provided with a threaded hole 34, and a screw 5 is connected to the threaded hole 34. The screw 5 is threadedly connected with the threaded hole 34 to fix the external wire in the wire through hole 33. The tail of the screw 5 is pressed against the external wire, so that the external wire is firmly locked in the wire through hole 33, thereby having good connection stability, and the threaded connection method is also convenient for wiring or replacing wires.

[0059] In this embodiment, refer to Fig.10The wiring module also includes an anti-dropout gasket 51, through which the screw 5 passes and is threadedly connected to the threaded hole 34. The anti-dropout gasket 51 is located between the head of the screw 5 and the wiring terminal 3, thereby preventing the screw from falling off due to vibration, thereby further improving the reliability and stability of the electrical connection.

[0060] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A DC brushless integrated switch with a wiring module, comprising: A housing and an actuating mechanism and a power module arranged in the housing, wherein the power module includes a power PCB and a power switch arranged on the power PCB, and is characterized in that: the power PCB is provided with a wiring terminal, and the wiring terminal is used to electrically connect an external wire with the power switch.

2. The DC brushless integrated switch with a wiring module according to claim 1, characterized in that: The connection mode between the wiring terminal and the external wire is welding or detachable connection.

3. The DC brushless integrated switch with a wiring module according to claim 2, characterized in that: The wiring terminal is provided with a terminal bracket, and the wiring terminal passes through the top of the terminal bracket and is welded to an external wire.

4. The DC brushless integrated switch with a wiring module according to claim 3, characterized in that: The terminal support comprises a terminal support portion and a wire support portion, the top end of the connection terminal is arranged on the terminal support portion, the wire support portion is arranged on the outer side of the terminal support portion, and the external wire is placed on the surface of the wire support portion.

5. The DC brushless integrated switch with a wiring module according to claim 4, characterized in that: There are a plurality of the wiring terminals, and a plurality of terminal support parts for accommodating the wiring terminals are provided on the terminal support, and partitions are provided between adjacent terminal support parts.

6. The DC brushless integrated switch with a wiring module according to claim 4, characterized in that: A welding portion is provided at the top end of the connection terminal, and the welding portion is bent transversely above the terminal supporting portion.

7. The DC brushless integrated switch with a wiring module according to claim 3, characterized in that: The terminal bracket is buckled with the shell, and the terminal bracket and the shell fix the power PCB board inside.

8. The DC brushless integrated switch with a wiring module according to claim 2, characterized in that: The wiring terminal is provided with a wire through hole, and the external wire is connected to the wiring terminal by passing through the wire through hole. The wiring terminal is provided with a threaded hole, and the threaded hole is connected to the wire through hole. The threaded hole is connected with a screw, and the screw fixes the external wire to the wiring terminal.

9. The DC brushless integrated switch with a wiring module according to claim 1, characterized in that: The connection terminal is provided with a connection portion, the power PCB is provided with a terminal connection hole, the connection portion is fixed to the power PCB through the terminal connection hole, and the connection portion is electrically connected to the power switch.

10. The DC brushless integrated switch with a wiring module according to any one of claims 1 to 9, characterized in that: The power PCB is provided with a glue potting layer, the connection ends of the connection terminals and the power PCB are covered by the glue potting layer, and the tops of the connection terminals are exposed outside the glue potting layer.

11. The DC brushless integrated switch with a wiring module according to claim 1, characterized in that: The shell includes a cover shell and a heat dissipation shell, the power PCB is arranged in the heat dissipation shell, the heat dissipation shell has a closed part and an open part, the closed part and the cover shell are buckled to form a closed area, and the power switch and the connection terminal are arranged in the open part of the heat dissipation shell.

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