Large-current diversion mechanism and alternating-current motor controller

Abstract

The utility model provides a heavy-current diversion mechanism and an AC motor controller, which are applied to the field of controllers, and are characterized in that the heavy-current diversion mechanism comprises a diversion sheet which is fixed on a circuit board and is electrically connected with a power supply; the plurality of power connection pieces are arranged on the circuit board, the power connection pieces are used for being connected with wires and electrically connected with the flow deflector, the power supply directly supplies power to the flow deflector, and current passes through the flow deflector and then enters different wires through the plurality of power connection pieces to reach a power utilization position. Therefore, the diversion requirement on high-power current can be met; the lead-in structure has the technical effects that the lead-in structure can replace a lead to serve as a current lead-in structure, and the problem that a rubber sleeve of the lead is gradually softened after being used for a long time and easily causes adhesion or short circuit is solved.

Description

Technical Field

[0001] The utility model relates to the field of controllers, in particular to a large current guiding mechanism and an AC motor controller. Background Art

[0002] An AC motor controller is an integrated circuit that actively controls the motor to operate in a set direction, speed, angle, and response time. It usually contains a variety of electronic components mounted on a circuit board.

[0003] In a high-power AC motor controller, the current is divided into multiple branches and reaches the power consumption location after being introduced. The power demand is large. In order to meet the power demand of the high-power AC motor controller, it is necessary to use a large-cross-section wire to introduce the current, and then use multiple wires to transport the current to the power consumption location after the current is introduced. When using a wire to introduce high-power current, the resistance of the wire core itself will generate heat when the current passes through. After long-term use, the rubber sheath of the wire will gradually soften and the viscosity of the rubber sheath will increase, making the wire easy to stick to other structures. There is also the problem of the wire core being easily exposed and causing a short circuit. Therefore, a new way of introducing current is needed. Utility Model Content

[0004] The utility model aims to provide a large current conducting mechanism, which has the advantage of being used to replace the wire as the current introduction structure, and solving the problem that the rubber sleeve of the wire gradually softens after long-term use, which easily causes sticking or short circuit.

[0005] The utility model also provides an AC motor controller including the large current guiding mechanism.

[0006] The first aspect of the utility model provides a large current guiding mechanism, providing the following technical solutions: the large current guiding mechanism comprises:

[0007] a guide plate fixed to the circuit board and electrically connected to the power supply; and

[0008] A plurality of electrical connectors are arranged on the circuit board, and the electrical connectors are used to connect the wires and are electrically connected to the guide plates.

[0009] Through the above technical solution, the power supply is directly supplied to the guide plate. After the current passes through the guide plate, it passes through multiple power connectors and enters different wires to reach the power consumption point. This solution solves the problem of the softening of the rubber sleeve due to the self-heating of the wire due to excessive current transmission power by using the guide plate instead of the current introduction wire. Since the cross-sectional area of ​​the guide plate can be freely set, it can meet the current conduction requirements of high-power current.

[0010] In one embodiment of the present invention, the power connection member is disposed through the circuit board, and the connection position between the power connection member and the wire and the guide plate are located on opposite sides of the circuit board.

[0011] Through the above technical solution, the current is introduced through the guide plate, and then enters different power consumption positions from multiple power connection parts through the guide plate. This arrangement method is used to set the current introduction end and output end on different surfaces of the circuit board, which is convenient for arranging the wires and makes the layout more reasonable.

[0012] In an embodiment of the present invention, the guide plate is made of copper, aluminum, silver, copper alloy, aluminum alloy, nickel alloy, cobalt alloy or titanium alloy.

[0013] Through the above technical solutions, these materials have good electrical conductivity and are suitable as materials for guide plates.

[0014] In one embodiment of the utility model, it also includes a power post fixed to the circuit board, the power post is provided with a jack for inserting a plug connected to a power source, and the power post is electrically connected to the guide plate.

[0015] Through the above technical solution, when connecting electricity, the guide plate can be energized by inserting a plug connected to a power source into the socket on the power connection pole, which makes connecting electricity more convenient.

[0016] In an embodiment of the present invention, the power connection post is made of a conductive material, and the power connection post and the guide plate are locked and fixed by a locking member.

[0017] Through the above technical solution, after the locking piece locks and fixes the terminal post and the guide plate, the terminal post and the guide plate are tightly abutted against each other, ensuring that the current can enter the guide plate through the terminal post; at the same time, the terminal post and the guide plate stabilize each other, making the terminal post and the guide plate more firmly fixed on the circuit board.

[0018] In an embodiment of the present invention, the locking member is configured as a bolt.

[0019] Through the above technical solution, the power connection post and the guide plate are firmly locked and fixed by bolts.

[0020] In one embodiment of the utility model, a clamping screw is installed on the power connection post, and the power connection post and the clamping screw cooperate to squeeze and fix the contact point of the external power supply.

[0021] Through the above technical solution, the clamping screw is pre-installed on the power pole during installation but not locked. The contact of the external power supply is placed between the power pole and the clamping screw and then the clamping screw is tightened to fix it, making the connection of the external power supply line more convenient.

[0022] In one embodiment of the present invention, it further comprises a conductive sheet attached to the circuit board, and the conductive sheet is electrically connected to the power connection post and the guide sheet respectively.

[0023] Through the above technical solution, the conductive sheet plays a guiding role between the connection post and the guide sheet, increases the way current passes between the connection post and the guide sheet, and further enhances the guiding effect of the connection post and the guide sheet.

[0024] A second aspect of the utility model provides an AC motor controller, comprising a housing and a circuit board installed inside the housing, and including a large current guiding mechanism of any of the above-mentioned solutions.

[0025] The utility model supplies power to the guide plate, and the large current enters into different wires through multiple power connection pieces through the guide plate, thereby realizing current supply to the controller; the utility model replaces the wire with the guide plate, and solves the problem of softening of the rubber sleeve of the wire, easy sticking or short circuit after long-term use while ensuring the transmission of large-power current. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial schematic diagram of an exploded view of an embodiment of the utility model;

[0027] Figure 2 It is a cross-sectional view of the installation relationship between the guide plate and the circuit board of the embodiment of the utility model.

[0028] Figure numerals: 1. guide plate; 2. circuit board; 3. power connection piece; 4. power connection post; 5. locking piece; 6. clamping screw; 7. conductive sheet; 8. housing. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0031] See also Figure 1The utility model provides an AC motor controller, comprising: a housing 8, in which a circuit board 2 is fixed by screws.

[0032] See also Figure 1 , and also includes a guide plate 1 welded and fixed on the circuit board 2. In this embodiment, the guide plate 1 is made of aluminum. In other embodiments, copper, silver, copper alloy, aluminum alloy, nickel alloy, cobalt alloy or titanium alloy can be used instead. In this embodiment, the guide plate 1 is a long strip. The long side of the guide plate 1 is fixed to the circuit board 2. The guide plate 1 replaces the current introduction wire for large current to pass through, which solves the problem of the rubber sleeve softening due to the self-heating of the wire due to excessive current transmission power.

[0033] See also Figure 1 and Figure 2 , and also includes a plurality of power connection members 3 installed on the circuit board 2. In this embodiment, the power connection members 3 are integrally formed with the guide plate 1 and are welded and fixed to the circuit board 2 with the guide plate 1. The power connection members 3 are arranged in an interval manner on the guide plate 1. Through holes for accommodating the power connection members 3 are pre-opened on the circuit board 2. The power connection members 3 pass through the circuit board 2. One end of the power connection member 3 away from the guide plate 1 is welded to the electric core of the wire at the power consumption position, so that the current can reach the power consumption position from the guide plate 1 through the power connection member 3.

[0034] See also Figure 1 , and also includes a power post 4 fixed to the circuit board 2 by screws. The power post 4 and the guide plate 1 are locked and fixed by a locking member 5. In this embodiment, the locking member 5 is set as a bolt. The power post 4 is made of conductive material throughout. In this embodiment, the power post 4 is made of aluminum, so that the current can reach the guide plate 1 from the power post 4. At the same time, the power post 4 and the guide plate 1 play a role of fixing each other to prevent the power post 4 or the guide plate 1 from loosening from the circuit board 2 and affecting the guide effect.

[0035] An opening conforming to the end of the connection post 4 away from the circuit board 2 is provided on the shell 8, and the external power supply is connected to the connection post 4 through the opening. In the present embodiment, the connection post 4 is also equipped with a clamping screw 6. The contact point of the external power supply is placed between the connection post 4 and the clamping screw 6 and then the clamping screw 6 is tightened to fix it. In the present embodiment, the contact point of the external power supply is set as a terminal at the end of the wire, and the terminal is squeezed and fixed by the connection post 4 and the clamping screw 6, so that the connection of the external power supply line is more convenient.

[0036] See also Figure 1, and also includes a conductive sheet 7 attached to the circuit board 2. In this embodiment, the conductive sheet 7 is set as a copper sheet. The conductive sheet 7 is glued and fixed to the circuit board 2. Part of the conductive sheet 7 is located between the power post 4 and the circuit board 2, and another part is located between the guide sheet 1. The guide sheet 1 plays an auxiliary role in guiding current, so that part of the current passes through the conductive sheet 7 from the power post 4 to the guide sheet 1, further improving the current guiding capacity for large currents.

[0037] A brief description of the usage process: the current enters the connection pole 4 from the external power supply, and after being transmitted in the connection pole 4, a part of it reaches the guide plate 1 through the contact surface between the connection pole 4 and the guide plate 1, and the other part enters the guide plate 1 from the conductive sheet 7. The guide plate 1 guides the incoming current and then diverts it to different power consumption locations through multiple connection pieces 3. This solution solves the problem of softening the rubber sleeve due to the self-heating of the wire due to excessive current transmission power by using the guide plate 1. Since the cross-sectional area of ​​the guide plate 1 can be freely set, it can meet the current diversion requirements for high-power current.

[0038] In summary, the utility model can replace the wire as the current introduction structure, and solve the problem that the rubber sleeve of the wire will gradually soften after long-term use, which is easy to cause sticking or short circuit. Therefore, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A large current conducting mechanism, characterized in that: include: A guide plate, fixed to the circuit board and electrically connected to the power supply; as well as, A plurality of electrical connectors are arranged on the circuit board, and the electrical connectors are used to connect the wires and are electrically connected to the guide plates.

2. The large current guiding mechanism according to claim 1, characterized in that: The power connection piece is arranged to penetrate the circuit board, and the connection position between the power connection piece and the wire is located on the opposite side of the circuit board as the guide plate.

3. The large current guiding mechanism according to claim 1, characterized in that: The guide plate is made of copper, aluminum, silver, copper alloy, aluminum alloy, nickel alloy, cobalt alloy or titanium alloy.

4. The high current guiding mechanism according to any one of claims 1 to 3, characterized in that: It also includes a power connection post fixed to the circuit board, which is electrically connected to an external power source and to the guide plate.

5. The large current guiding mechanism according to claim 4, characterized in that: The power connection post is made of conductive material, and the power connection post and the guide plate are locked and fixed by a locking piece.

6. The large current guiding mechanism according to claim 5, characterized in that: The locking member is configured as a bolt.

7. The large current guiding mechanism according to claim 4, characterized in that: The power connection post is equipped with a clamping screw, and the power connection post and the clamping screw cooperate to squeeze and fix the contact point of the external power supply.

8. The large current guiding mechanism according to claim 4, characterized in that: It also includes a conductive sheet attached to the circuit board, and the conductive sheet is electrically connected to the power connection column and the guide sheet respectively.

9. An AC motor controller, comprising a housing and a circuit board installed inside the housing, characterized in that: The invention comprises a large current guiding mechanism as described in any one of claims 1 to 8.

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