Power supply positive and negative electrode change-over switch

Abstract

The utility model discloses a power supply positive and negative electrode change-over switch, which comprises a box body and an electrode change-over assembly arranged in the box body in a manner that the electrode change-over assembly can be driven to slide in a single degree of freedom and can be locked, and the electrode change-over assembly is provided with a first locking position and a second locking position, the box body is provided with a positive electrode access part, a positive electrode outlet part, a negative electrode access part and a negative electrode outlet part; when the electrode conversion assembly is located at the first locking position, the positive electrode access part and the positive electrode outlet part can be connected, and the negative electrode access part and the negative electrode outlet part can be connected to form positive connection; when the electrode conversion assembly is located at the second locking position, the positive electrode access part and the negative electrode access part can be connected, and the negative electrode access part and the positive electrode access part are connected to form reverse connection; the power supply positive and negative electrode change-over switch is convenient to operate, simple in structure, low in cost and suitable for motor positive and negative rotation control.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switch structure design, in particular to a power supply positive and negative pole conversion switch. Background Art

[0002] In laboratories and other places, motor forward and reverse control is often involved, which requires switching the positive and negative poles of the power supply. Currently, laboratories and other places generally use a method of manually plugging and unplugging the terminals and then exchanging them to complete the switching of the positive and negative poles of the power supply. Although this method has a simple structure, it can easily damage the switch during repeated plugging and unplugging. At the same time, the operation requires plugging and unplugging, which is relatively cumbersome. Of course, there are also some other methods in the existing technology that can achieve the switching of the positive and negative poles of the power supply, such as contactor interlock control circuits, inverter control, PLC circuit control, etc. However, for contactor interlock control circuits, because two relays are used to achieve interlocking, the cost is high and the volume is large; in inverter control circuits, it is expensive and large; PLC circuits are small in size, but cannot carry large currents and are relatively expensive. Therefore, it is necessary to develop and design a power supply positive and negative pole switching switch that is easy to operate, simple in structure, low in cost, and suitable for motor forward and reverse control. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a power supply positive and negative pole conversion switch, which is easy to operate, simple in structure, low in cost, and can be applied to motor forward and reverse rotation control.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power positive and negative pole conversion switch, comprising: a box body and an electrode conversion assembly arranged in the box body in a manner that can be driven to slide with a single degree of freedom and can be locked, the electrode conversion assembly having a first locking position and a second locking position, and the box body is provided with a positive pole access part, a positive pole outlet part, a negative pole access part and a negative pole outlet part; when the electrode conversion assembly is in the first locking position, the positive pole access part and the positive pole outlet part can be connected, and the negative pole access part and the negative pole outlet part can be connected to form a positive connection; when the electrode conversion assembly is in the second locking position, the positive pole access part and the negative pole outlet part can be connected, and the negative pole access part and the positive pole outlet part can be connected to form a reverse connection.

[0005] Furthermore, the electrode conversion assembly also has a third locking position between the first locking position and the second locking position. When the electrode conversion assembly is in the third locking position, the positive electrode input part, the positive electrode output part, the negative electrode input part and the negative electrode output part are not connected.

[0006] Furthermore, the box body includes a bottom shell with an opening at the top and a cover plate fixedly connected to the top of the bottom shell.

[0007] Furthermore, four groups of rectangular or approximately rectangular clipping parts are provided in the bottom shell, and conductive sheets arranged along the width direction of the rectangle formed by the four groups of clipping parts are fixed in the clipping parts. The conductive sheets are provided with connecting wires extending to the outside of the box body, and the four connecting wires form a positive electrode input part, a positive electrode output part, a negative electrode input part and a negative electrode output part respectively.

[0008] Furthermore, the bottom shell is a rectangular or approximately rectangular shell, and the four groups of clamping parts are arranged at the four corners of the bottom shell.

[0009] Furthermore, the electrode conversion assembly includes a first conductive sheet, a second conductive sheet, a third conductive sheet and a fourth conductive sheet fixed as one, the first conductive sheet and the second conductive sheet are arranged in an I-shaped structure, and the web of the I-shaped structure is arranged along the length direction of the rectangle formed by the four groups of clamping parts; the third conductive sheet is arranged parallel to the upper wing plate of the I-shaped structure, and the third conductive sheet and the upper wing plate clamp the two conductive sheets on the corresponding sides; the fourth conductive sheet is arranged parallel to the lower wing plate of the I-shaped structure, and the fourth conductive sheet and the lower wing plate clamp the two conductive sheets on the corresponding sides.

[0010] Furthermore, the electrode conversion assembly also includes a shifting rod, which is fixedly connected to the web of the I-shaped structure and extends outwardly to be exposed on the cover plate. The cover plate is provided with an escape opening for the movement of the shifting rod.

[0011] Furthermore, a lever limiting portion is provided at the bottom center of the bottom shell, and the lever limiting portion includes three groups of elastic limiting clips arranged along the length direction of the web of the I-shaped structure, and the lever is clamped in the elastic limiting clip; at least two groups of guide grooves are arranged at intervals along the length direction of the web of the I-shaped structure in the bottom shell, and the web is slidably arranged in the guide grooves.

[0012] Furthermore, the conductive sheet is a conductive copper sheet, and the first conductive sheet, the second conductive sheet, the third conductive sheet and the fourth conductive sheet are all copper bars.

[0013] Furthermore, the bottom shell and the cover plate are both plastic parts, and a wire hole is provided on the peripheral wall of the bottom shell, and the connecting wires are led out from the wire hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The power positive and negative pole conversion switch provided by the utility model can be connected to the circuit by connecting wires with the positive pole input part, the positive pole output part, the negative pole input part and the negative pole output part to form a control closed loop, and then the positive and negative pole connection directions of the power supply can be changed by sliding to change the position of the electrode conversion component; there is no need to plug and unplug the connector, the operation is convenient, and the durability is high; the overall structure is simple, the volume is relatively small, and the cost is relatively low; it is suitable for controlling the forward and reverse rotation of the motor.

[0016] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the axonometric structure of the utility model after removing the cover plate

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model

[0019] Figure markings: 1-box body; 1a-positive electrode access part; 1b-positive electrode connection part; 1c-negative electrode access part; 1d-negative electrode connection part; 101-bottom shell; 101a-clamping part; 101b-conductive sheet; 101c-connecting wire; 101d-elastic limit card; 101e-guide groove; 101f-wire hole; 102-cover plate; 102a-avoidance; 2-electrode conversion assembly; 2a-web; 2b-upper wing plate; 2c-lower wing plate; 201-first conductive sheet; 202-second conductive sheet; 203-third conductive sheet; 204-fourth conductive sheet; 205-dial lever. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0021] See also Figure 1-2In this embodiment, a power supply positive and negative pole conversion switch is disclosed, comprising: a box body 1 and an electrode conversion assembly 2 arranged in the box body 1 in a manner that can be driven to slide in a single degree of freedom and can be locked, the electrode conversion assembly 2 having a first locking position and a second locking position, the box body 1 being provided with a positive electrode connection portion 1a, a positive electrode connection portion 1b, a negative electrode connection portion 1c, and a negative electrode connection portion 1d; when the electrode conversion assembly 1 is in the first locking position, the positive electrode connection portion 1a and the positive electrode connection portion 1b are connected, and the negative electrode connection portion 1c and the negative electrode connection portion 1d are connected to form a positive connection; when the electrode conversion assembly 2 is in the second locking position When the positive electrode connection part 1a is connected to the negative electrode connection part 1d, and the negative electrode connection part 1c is connected to the positive electrode connection part 1b to form a reverse connection; here, the locking method of the electrode conversion assembly 2 is not limited, and the structure thereof is not limited. It can be satisfied that when in the corresponding position, the positive electrode connection part 1a, the positive electrode connection part 1b, the negative electrode connection part 1c and the negative electrode connection part 1d are correspondingly connected; the box body 1 is preferably configured as a plastic box; the positive electrode connection part 1a, the positive electrode connection part 1b, the negative electrode connection part 1c and the negative electrode connection part 1d are preferably configured as connecting wires; it can be understood that the "positive connection" and "reverse connection" mentioned above are relative;

[0022] In the above structural design, the connection circuit can be connected to the positive electrode access part 1a, the positive electrode access part 1b, the negative electrode access part 1c and the negative electrode access part 1d by connecting wires to form a control closed loop, and then the positive and negative poles of the power supply can be changed by sliding to change the position of the electrode conversion component 2; there is no need to plug and unplug the connector, the operation is convenient, and the durability is high; the overall structure is simple, the volume is relatively small, and the cost is relatively low; it is suitable for controlling the forward and reverse rotation of the motor.

[0023] In this embodiment, the electrode conversion assembly 2 also has a third locking position between the first locking position and the second locking position. When the electrode conversion assembly 2 is in the third locking position, the positive electrode access part 1a, the positive electrode access part 1b, the negative electrode access part 1c and the negative electrode access part 1d are not connected; by setting the third locking position between the first locking position and the second locking position, it can play the function of independently controlling the on and off of the circuit, saving the design of the circuit on and off switch, which is beneficial to saving the number of switches in the circuit; at the same time, it can play a safety protection role to ensure that the forward and reverse circuits are not connected at the same time; at the same time, when used in the forward and reverse control of the motor, it can play a switching buffer role to ensure that the switching process is not too fast.

[0024] In this embodiment, the box body 1 includes a bottom shell 101 with an opening at the top and a cover plate 102 fixedly connected to the top of the bottom shell 101; here, the bottom shell 101 and the cover plate 102 can be fixed by means of snap connection, screw connection, etc. The box body 1 with this structural design has a simple structure and is convenient for processing and assembly.

[0025] In this embodiment, four groups of rectangular or approximately rectangular clamping portions 101a are provided in the bottom shell 101, and the clamping portions 101a are fixed with conductive sheets 101b arranged along the width direction of the rectangle formed by the four groups of clamping portions 101a. The conductive sheets 101b are provided with connecting wires 101c extending to the outside of the box body 1, and the four connecting wires 101c form the positive electrode access portion 1a, the positive electrode access portion 1b, the negative electrode access portion 1c and the negative electrode access portion 1d respectively; specifically, the clamping portion 101a is two card plates integrally formed at the bottom of the bottom shell 101, and the conductive sheet 101b is clamped between the two card plates. board; the connecting wire 101c and the conductive sheet 101b can be connected by brazing, etc.; in this structural design, the connecting wire 101c used forms the corresponding electrode access part, and the conductive sheet 101b installed by clipping is conducive to the docking connection of the external line, and at the same time is conducive to the displacement of the electrode conversion component 2 to realize the corresponding on-off control. It is only necessary to set the corresponding docking sheet in the electrode conversion component 2 to complete the contact with the conductive sheet 101b to complete the conduction; and the overall layout is reasonable, which is conducive to improving the compactness of the overall structure and reducing the overall layout volume; of course, the overall structure is simple and easy to install, which is conducive to further reducing manufacturing costs.

[0026] In this embodiment, the bottom shell 101 is a rectangular or approximately rectangular shell, and four groups of clamping parts 101a are arranged at the four corners of the bottom shell; the structure of the bottom shell 101 can be suitable for the arrangement of the positive electrode access part 1a, the positive electrode access part 1b, the negative electrode access part 1c and the negative electrode access part 1d, and the overall space occupied is small, which is conducive to further improving the compactness of the overall structure.

[0027] In this embodiment, the electrode conversion assembly 2 includes a first conductive sheet 201, a second conductive sheet 202, a third conductive sheet 203 and a fourth conductive sheet 204 fixed together. The first conductive sheet 201 and the second conductive sheet 202 are arranged in an I-shaped structure, and the web 2a of the I-shaped structure is arranged along the length direction of the rectangle formed by the four groups of clamping portions 101a; the third conductive sheet 203 is arranged parallel to the upper wing plate 2b of the I-shaped structure, and the third conductive sheet 203 and the upper wing plate 2b sandwich the two conductive sheets 101b on the corresponding sides; the fourth conductive sheet 204 is arranged parallel to the lower wing plate 2c of the I-shaped structure, and the fourth conductive sheet 204 and the lower wing plate 2c sandwich the two conductive sheets 101b on the corresponding sides; it can be understood that the first conductive sheet 201, the second conductive sheet 202, the third conductive sheet 203 and the fourth conductive sheet 204 are insulated and connected to each other, and no electrical cross-contamination is possible, as usually in the first conductive sheet The portions of the sheet 201, the second conductive sheet 202, the third conductive sheet 203 and the fourth conductive sheet 204 that do not need to be in contact with the conductive sheet 101b are coated with an insulating layer or wrapped with an insulating layer; more specifically, the first conductive sheet 201 and the second conductive sheet 202 are respectively Z-shaped right-angled folded sheets, and the first conductive sheet 201 and the second conductive sheet 202 are overlapped and fixed to form an I-shaped structure; the third conductive sheet 203 is a T-shaped sheet, fixed to the top outer side of the upper wing plate 2b; the fourth conductive sheet 204 is a straight-line sheet, fixed to the inner side of the lower wing plate 2c; the first conductive sheet 201, the second conductive sheet 202, the third conductive sheet 203 and the fourth conductive sheet 204 can be fixed to each other by means of clipping, gluing, etc.; the electrode conversion component 2 in this structural design is composed of a plurality of regular conductive sheets, with a simple structure, which is conducive to further reducing the production cost; at the same time, the layout structure is reasonable, which is conducive to achieving corresponding on-off control after the overall displacement.

[0028] In this embodiment, the electrode conversion assembly 2 also includes a lever 205, which is fixedly connected to the web 2a of the I-shaped structure, and the lever 205 extends outward and is exposed on the cover 102. The cover 102 is provided with an avoidance opening 102a for the movement of the lever 205; here, the lever 205 can be fixed to the web 2a by snapping; this structural design is reasonable and conducive to processing and manufacturing, and sliding control can be completed through the lever 205, which helps to further improve the convenience of operation.

[0029] In this embodiment, a lever limiting portion is provided at the bottom center of the bottom shell 101, and the lever limiting portion includes three groups of elastic limiting clips 101d arranged along the length direction of the web 2a of the I-shaped structure, and the lever 205 is clamped in the elastic limiting clip 101d; at least two groups of guide grooves 101e arranged at intervals along the length direction of the web 2a of the I-shaped structure are provided in the bottom shell 101, and the web 2a is slidably set in the guide groove 101e; specifically, the elastic limiting clip 101d here is two groups of arc-shaped plates arranged opposite to each other, and the guide groove 101e is formed by a U-shaped plate integrally formed in the bottom shell 101; the guide groove 101e in this structural design is conducive to completing the sliding guidance of the electrode conversion assembly 2 and ensuring operational stability; the three groups of elastic limiting clips 101d are conducive to realizing the control of the first, second and third locking positions of the electrode conversion assembly 2, with a simple structure, reasonable layout, high compactness, and convenient processing and manufacturing, further reducing production costs.

[0030] In this embodiment, the conductive sheet 101b is a conductive copper sheet, and the first conductive sheet 201, the second conductive sheet 202, the third conductive sheet 203 and the fourth conductive sheet 204 are all copper bars. Copper conductive sheets have good conductivity and relatively low cost.

[0031] In this embodiment, the bottom shell 101 and the cover plate 102 are both plastic parts. The peripheral wall of the bottom shell 101 is provided with wire holes 101f, and the connecting wires 101c are led out from the wire holes 101f. Specifically, there are four wire holes 101f, corresponding to four connecting wires 101c. The use of plastic parts is conducive to improving safety in use. By opening holes on the peripheral wall of the bottom shell 101, the positions are reasonably arranged, which is conducive to the arrangement and installation of the connecting wires 101c.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A power supply positive and negative pole conversion switch, characterized in that: include: A box body (1) and an electrode conversion assembly (2) arranged in the box body (1) in a manner that can be driven to slide in a single degree of freedom and can be locked, the electrode conversion assembly (2) having a first locking position and a second locking position, the box body (1) being provided with a positive electrode access portion (1a), a positive electrode outlet portion (1b), a negative electrode access portion (1c) and a negative electrode outlet portion (1d); when the electrode conversion assembly (1) is in the first locking position, the positive electrode access portion (1a) and the positive electrode outlet portion (1b) are connected, and the negative electrode access portion (1c) and the negative electrode outlet portion (1d) are connected to form a positive connection; when the electrode conversion assembly (2) is in the second locking position, the positive electrode access portion (1a) and the negative electrode outlet portion (1d) are connected, and the negative electrode access portion (1c) and the positive electrode outlet portion (1b) are connected to form a reverse connection.

2. The power supply positive and negative pole conversion switch according to claim 1, characterized in that: The electrode conversion assembly (2) further has a third locking position between the first locking position and the second locking position. When the electrode conversion assembly (2) is in the third locking position, the positive electrode connection portion (1a), the positive electrode connection portion (1b), the negative electrode connection portion (1c), and the negative electrode connection portion (1d) are not connected.

3. The power supply positive and negative pole conversion switch according to claim 1 or 2, characterized in that: The box body (1) comprises a bottom shell (101) with an opening at the top and a cover plate (102) fixedly connected to the top of the bottom shell (101).

4. The power positive and negative pole conversion switch according to claim 3, characterized in that: Four groups of rectangular or approximately rectangular clamping portions (101a) are provided in the bottom shell (101), and conductive sheets (101b) are fixedly provided in the clamping portions (101a) and arranged along the width direction of the rectangle formed by the four groups of clamping portions (101a). Connecting wires (101c) extending toward the outside of the box body (1) are provided on the conductive sheets (101b), and the four connecting wires (101c) correspondingly form a positive electrode connection portion (1a), a positive electrode connection portion (1b), a negative electrode connection portion (1c), and a negative electrode connection portion (1d).

5. The power positive and negative pole conversion switch according to claim 4, characterized in that: The bottom shell (101) is a rectangular or approximately rectangular shell, and four groups of clamping parts (101a) are respectively arranged at the four corners of the bottom shell.

6. The power supply positive and negative pole conversion switch according to claim 4, characterized in that: The electrode conversion assembly (2) comprises a first conductive sheet (201), a second conductive sheet (202), a third conductive sheet (203) and a fourth conductive sheet (204) fixed together as a whole; the first conductive sheet (201) and the second conductive sheet (202) are arranged in an I-shaped structure, and the web (2a) of the I-shaped structure is arranged along the length direction of the rectangle formed by the four groups of clamping portions (101a); the third conductive sheet (203) is arranged parallel to the upper wing plate (2b) of the I-shaped structure, and the third conductive sheet (203) and the upper wing plate (2b) sandwich the two conductive sheets (101b) on the corresponding side; the fourth conductive sheet (204) is arranged parallel to the lower wing plate (2c) of the I-shaped structure, and the fourth conductive sheet (204) and the lower wing plate (2c) sandwich the two conductive sheets (101b) on the corresponding side.

7. The power supply positive and negative polarity conversion switch according to claim 6, characterized in that: The electrode conversion assembly (2) further comprises a shifting rod (205), the shifting rod (205) being fixedly connected to the web (2a) of the I-shaped structure, and the shifting rod (205) extending outwards to be exposed on the cover plate (102), the cover plate (102) being provided with an escape opening (102a) for the movement of the shifting rod (205).

8. The power positive and negative pole conversion switch according to claim 7, characterized in that: A lever limiting portion is provided at the bottom center of the bottom shell (101), and the lever limiting portion comprises three groups of elastic limiting clips (101d) arranged along the length direction of the web (2a) of the I-shaped structure, and the lever (205) is clamped in the elastic limiting clips (101d); at least two groups of guide grooves (101e) are arranged at intervals along the length direction of the web (2a) of the I-shaped structure in the bottom shell (101), and the web (2a) is slidably arranged in the guide grooves (101e).

9. The power positive and negative pole switch according to claim 6, characterized in that: The conductive sheet (101b) is a conductive copper sheet, and the first conductive sheet (201), the second conductive sheet (202), the third conductive sheet (203) and the fourth conductive sheet (204) are all copper bars.

10. The power positive and negative pole conversion switch according to claim 4, characterized in that: The bottom shell (101) and the cover plate (102) are both plastic parts. A wire hole (101f) is provided on the peripheral wall of the bottom shell (101), and the connecting wire (101c) is led out from the wire hole (101f).

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