Motor soft start protection device

Abstract

The utility model relates to the technical field of motor starting, in particular to a motor soft start protection device which comprises a starting circuit board, a contactor is installed on the front face of the starting circuit board, and hexagonal circuit inserting pieces are installed on the front face of the starting circuit board and on the two sides of the contactor. A contactor is arranged on the front surface of the starting circuit board, a four-corner line inserting piece is arranged on the front surface of the starting circuit board and above the contactor, a current-limiting resistor is connected to the front surface of the starting circuit board and above the contactor, pressing rivet screws and hexagon bolts are arranged on the two sides of the center of the outer wall of the current-limiting resistor, and copper bolts are arranged on the outer wall of the starting circuit board. By designing a motor soft start protection device and the like, the safety of the starting device is improved by utilizing a current-limiting resistor and a contactor in the device, and the problems that an existing motor starting device is directly externally arranged on a product shell for wiring, only one contactor is arranged, an electronic type needs an mos tube, the cost is high, and the motor starting device is easy to burn out and unstable are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor starting technical field, concretely is a motor soft start protection device. BACKGROUND

[0002] Motor starting device is used for starting motor's equipment, but the existing motor starting device still has the deficiency, specifically: the existing motor starting device is directly externally connected on the product shell, and only one contactor, electronic type needs mos tube, cost is big, easy to burn, unstable.

[0003] Therefore, the motor soft start protection device needs to solve the problems in the above background technology. UTILITY MODEL CONTENTS

[0004] The utility model discloses a motor soft start protection device to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A motor soft start protection device, including starting circuit board, the positive surface of starting circuit board is installed with contactor, the positive surface of starting circuit board and the both sides of contactor are installed with hexagonal circuit insert piece, the positive surface of starting circuit board and the top of contactor are installed with four corner circuit insert piece, the positive surface of starting circuit board and the top of contactor are connected with current limiting resistor, the both sides of the center of current limiting resistor outer wall are installed with press riveting screw and hexagon bolt, the outer wall of starting circuit board is installed with copper bolt, the outer wall of current limiting resistor is provided with protection mechanism;

[0007] The protection mechanism includes the connecting rod fixedly connected on the outer wall of starting circuit board, the outer wall of connecting rod is fixedly connected with connecting block, the outer wall of connecting block and the top of current limiting resistor are fixedly connected with protection plate, the outer wall of protection plate is equipped with flow groove, the front surface and the back surface of the both sides center of protection plate are rotatably connected with rotating rod, the outer wall of rotating rod is fixedly connected with baffle.

[0008] As the preferred scheme of the utility model, the contactor, the four corner circuit insert piece and the hexagonal circuit insert piece are provided with two groups, and the contactor and the current limiting resistor are connected with the starting circuit board through wires.

[0009] As the preferred scheme of the utility model, the connecting rod and the connecting block are provided with multiple groups, the connecting block is designed in the I-shaped structure, and the shape of the protection plate is matched with the shape of the current limiting resistor.

[0010] As the preferred scheme of the utility model, the protection plate is made of aluminum alloy, and the connecting block penetrates and extends into the protection plate.

[0011] As the preferred scheme of the utility model, the connecting rod, the connecting block and the baffle are all made of ABS plastic, and the baffle and the rotating rod are both provided with two groups.

[0012] As the preferred scheme of the utility model, the rotating rod penetrates the baffle, and the connection mode of the baffle and the protection plate is sliding connection.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、the utility model discloses a motor soft start protection device, and the current limiting resistor and the contactor in the device are used to improve the safety of the starting device, two groups of contactors are designed and installed on the starting circuit board, and the current limiting resistor is additionally increased, so that the current limiting resistor is connected in series in the load loop, the resistor is connected in the starting process, the contactor is short-circuited through the resistor after rotation, overheating and burning are prevented, short-circuit control and protection of the resistor are realized, and the problems that the existing motor starting device is directly externally connected on the product shell, only one contactor is used, an electronic type needs a mos tube, the cost is large, burning is easy, and the device is unstable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 It is a front view of the utility model; Figure 2 It is an enlarged view of A in the utility model.

[0018] In the drawing: 1, starting circuit board; 2, contactor; 3, hexagonal circuit plug; 4, four-corner circuit plug; 5, current limiting resistor; 6, press-in rivet screw; 7, hexagonal bolt; 8, copper bolt; 9, protection mechanism; 901, connecting rod; 902, connecting block; 903, protection plate; 904, flow groove; 905, rotating rod; 906, baffle. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings, and several embodiments of the utility model are given, but the utility model can be realized in many different forms and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intervening element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terminology used in the specification of the utility model herein is only for the purpose of describing specific embodiments and is not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more relevant listed items.

[0023] Embodiment, please refer to Figures 1-3 The utility model provides a technical scheme:

[0024] A motor soft start protection device, including starting circuit board 1, the positive surface of starting circuit board 1 is installed with contactor 2, the positive surface of starting circuit board 1 and the both sides of contactor 2 are installed with hexagonal line insert piece 3, the positive surface of starting circuit board 1 and the top of contactor 2 are installed with four-corner line insert piece 4, the positive surface of starting circuit board 1 and the top of contactor 2 are connected with current-limiting resistor 5, the both sides of the center of the outer wall of current-limiting resistor 5 are installed with press-in screw 6 and hexagonal bolt 7, the outer wall of starting circuit board 1 is installed with copper bolt 8, the outer wall of current-limiting resistor 5 is provided with protection mechanism 9;

[0025] Wherein contactor 2, four-corner line insert piece 4, hexagonal line insert piece 3 are provided with two groups, contactor 2, current-limiting resistor 5 are connected with starting circuit board 1 through wire;

[0026] In this embodiment, reference is made to Figure 2 And Figure 3The protection mechanism 9 comprises a connecting rod 901 fixedly connected to the outer wall of the starting circuit board 1, an outer wall of the connecting rod 901 is fixedly connected with a connecting block 902, an outer wall of the connecting block 902 is fixedly connected with a protection plate 903 above the current limiting resistor 5, the outer wall of the protection plate 903 is provided with a flow groove 904, and the front surface and the back surface of the connecting block 902 are rotatably connected with rotating rods 905, and the outer wall of the rotating rod 905 is fixedly connected with a baffle 906;

[0027] The connecting rod 901 and the connecting block 902 are provided with multiple groups, the connecting block 902 is designed in a I-shaped structure, the shape of the protection plate 903 is matched with that of the current limiting resistor 5, the protection plate 903 is made of aluminum alloy, the connecting block 902 penetrates through and extends into the protection plate 903, the connecting rod 901, the connecting block 902 and the baffle 906 are made of ABS plastic, the baffle 906 and the rotating rod 905 are provided with two groups, the rotating rod 905 penetrates through and extends to the outside of the baffle 906, the baffle 906 and the protection plate 903 are connected in a sliding mode, the protection plate 903 on the front surface of the current limiting resistor 5 can protect the current limiting resistor 5, foreign matters and dust in the air cannot easily damage the current limiting resistor 5, the flow groove 904 on the outer wall of the protection plate 903 can keep air flowing, so that heat on the current limiting resistor 5 can be timely dissipated, when the current limiting resistor 5 is replaced, the rotating rod 905 is rotated, the rotating rod 905 drives the baffle 906 to rotate, the baffle 906 no longer blocks the connecting block 902, the protection plate 903 is pulled, the protection plate 903 is taken off from the connecting block 902, the current limiting resistor 5 is replaced, after the replacement is completed, the protection plate 903 is inserted on the connecting block 902 again, the rotating rod 905 is reversely rotated, the rotating rod 905 drives the baffle 906 to reversely rotate, and the reversely rotating baffle 906 blocks the connecting block 902, so that the protection plate 903 is fixed on the front surface of the current limiting resistor 5.

[0028] The utility model discloses a motor soft start protection device, which comprises a starting circuit board 1, a contactor 2 and a current limiting resistor 5.

[0029] The protection plate 903 on the front of the current limiting resistor 5 can protect the current limiting resistor 5, and foreign matters and dust in the outside are not easy to damage the current limiting resistor 5; the flow groove 904 on the outer wall of the protection plate 903 can keep the air circulating, so that the heat on the current limiting resistor 5 can be timely dissipated; when the current limiting resistor 5 is replaced, the rotating rod 905 is rotated, the baffle 906 is rotated by the rotating rod 905, the baffle 906 no longer blocks the connecting block 902, the protection plate 903 is pulled, the protection plate 903 is taken off from the connecting block 902, the current limiting resistor 5 is replaced, after the replacement is completed, the protection plate 903 is inserted on the connecting block 902 again, the rotating rod 905 is reversely rotated, the baffle 906 is reversely rotated by the rotating rod 905, and the reversely rotated baffle 906 blocks the connecting block 902, so that the protection plate 903 is fixed on the front of the current limiting resistor 5.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A soft start protection device for an electric machine comprising a start circuit board (1), characterized in that: The front of the starting circuit board (1) is provided with a contactor (2), the front of the starting circuit board (1) and on both sides of the contactor (2) are provided with hexagonal circuit inserts (3), the front of the starting circuit board (1) and above the contactor (2) are provided with four-corner circuit inserts (4), the front of the starting circuit board (1) and above the contactor (2) are connected with current limiting resistors (5), the outer wall center of the current limiting resistor (5) is provided with a press-in screw (6) and a hexagonal bolt (7) on both sides, the outer wall of the starting circuit board (1) is provided with a copper bolt (8), and the outer wall of the current limiting resistor (5) is provided with a protection mechanism (9); The protection mechanism (9) comprises a connecting rod (901) fixedly connected to the outer wall of the starting circuit board (1), an connecting block (902) fixedly connected to the outer wall of the connecting rod (901), a protection plate (903) fixedly connected to the outer wall of the connecting block (902) and above the current limiting resistor (5), a flow groove (904) formed in the outer wall of the protection plate (903), and rotating rods (905) rotatably connected to the front and back surfaces of the protection plate (903) and on both sides of the protection plate (903).

2. The motor soft start protection device of claim 1, wherein: The contactor (2), the four-corner circuit insert (4) and the hexagonal circuit insert (3) are provided with two groups, and the contactor (2) and the current limiting resistor (5) are connected with the starting circuit board (1) through wires.

3. The motor soft start protection device of claim 1, wherein: The connecting rod (901) and the connecting block (902) are provided with multiple groups, the connecting block (902) is designed in an I-shaped structure, and the protection plate (903) is shaped to be matched with the current limiting resistor (5).

4. The motor soft start protection device of claim 1, wherein: The protection plate (903) is made of aluminum alloy, and the connecting block (902) penetrates and extends into the protection plate (903).

5. The motor soft start protection device of claim 1, wherein: The connecting rod (901), the connecting block (902) and the baffle (906) are made of ABS plastic, and the baffle (906) and the rotating rod (905) are provided with two groups.

6. The motor soft start protection device of claim 1, wherein: The rotating rod (905) penetrates the baffle (906), and the baffle (906) and the protection plate (903) are connected in a sliding mode.

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