CN216122255U - Starter - Google Patents

Abstract

The application relates to a starter, including casing, first participate in, connect the inserted sheet and all install on the casing, its characterized in that: still be provided with first contact pin, second contact pin, first contact pin, second contact pin setting are in on only one prevent slow-witted socket on the casing, prevent slow-witted socket for its upper and lower direction central line asymmetry, first contact pin is connected with first participating in the electricity, and the second contact pin is connected with being connected the inserted sheet electricity, and external power source connector is fixed with preventing slow-witted socket cooperation, and the N of external power source connector holds, L respectively with first contact pin, second contact pin cooperation electricity is connected. The fool-proof socket is a concave positioning frame, and the concave shape of the concave positioning frame faces upwards or downwards. The external power connector can be connected only by one-time plugging, and the anti-fool function and the anti-pull-off function are achieved, so that the structure is simple, the use is convenient, and materials are saved.

Description

Starter

Technical Field

The present application relates to a starter which is mainly suitable for starting and protecting a motor of a refrigeration compressor such as a refrigerator and a freezer or a general single-phase alternating current motor.

Background

The refrigeration compressor mostly adopts a split-phase single-phase asynchronous motor, and two sets of windings, namely a main winding and an auxiliary winding, are arranged on a stator core of the refrigeration compressor. After the power is switched on, the main and auxiliary magnetic fields generated by the main and auxiliary windings form a rotating magnetic field due to phase difference, the rotating magnetic field cuts the static rotor to generate electromagnetic torque, so that the rotor starts to rotate, the torque of the started rotor is gradually increased, when the rotating speed reaches 75% -80% of the synchronous rotating speed, a loop of the auxiliary winding is cut off, and at the moment, the motor can still continue to increase the speed under the action of the main magnetic field until the motor reaches the balance with external impedance and stably runs. At present, a thermistor, namely a PTC starter, is usually used for completing the starting process, the PTC starter is connected in series in a secondary winding loop of a motor of a refrigeration compressor, the PTC starter is in a low-resistance conduction state at normal temperature, a PTC element is rapidly heated up under the action of current during starting, after the Curie temperature point is reached, the resistance value of the PTC element is rapidly increased to be more than dozens of kilohms, the current of the secondary winding loop is reduced to be less than ten milliamperes, the motor is similar to an open circuit state, the starting process of the motor is completed, and the motor enters normal operation.

Referring to fig. 1, a utility model patent application No. 201620020246.X discloses a multi-terminal safety starter for a refrigeration compressor. When the power supply line is connected with the power supply line of the refrigerator, an external power supply line is connected with the N-end connecting line end 8, and a power supply connecting line for extra jumper wires in the refrigerator is connected with the L-end connecting line end 5. The wiring mode needs cartridge twice in actual installation, and confuses easily between power cord and the connecting wire and connects the mistake, has that production efficiency is low and the circuit probably appears and connects the mistake and cause the potential safety hazard.

Disclosure of Invention

The technical problem that this application was solved is overcome the above-mentioned not enough that exists among the prior art, and provides a structure succinct, and convenient to use has the circuit and prevents staying (prevent to connect wrong) starter of function.

The technical scheme adopted by the application for solving the technical problems is as follows: the utility model provides a starter, includes casing, first participate in, connects the inserted sheet, and first participate in, connect the inserted sheet and all install on the casing its characterized in that: still be provided with first contact pin, second contact pin, first contact pin, second contact pin setting are in on only one prevent slow-witted socket on the casing, prevent slow-witted socket for its upper and lower direction central line asymmetry, first contact pin is connected with first participating in the electricity, and the second contact pin is connected with being connected the inserted sheet electricity, and external power source connector is fixed with preventing slow-witted socket cooperation, and the N of external power source connector holds, L respectively with first contact pin, second contact pin cooperation electricity is connected. After the external power connector is inserted into the fool-proof socket in place, the electrical connection of the N end and the L end of the external power connector after being matched with the first contact pin and the second contact pin can be ensured to be completed at one time, and the fool-proof function of preventing a line from being connected in a wrong way is realized (the external power connector is reversely inserted into the fool-proof socket).

The fool-proof socket is a concave positioning frame, and the concave shape of the concave positioning frame faces upwards or downwards, so that the upper direction and the lower direction of the concave positioning frame are asymmetrical.

The anti-drop jack catch is arranged on the fool-proof socket and is in matched clamping connection with the jack catch of the external power supply connector, so that the anti-drop jack catch has a jack catch anti-drop function.

The shell is provided with a first pin positioning cavity, a first pin inserting positioning cavity, a second pin positioning cavity and a connecting insertion piece positioning cavity.

The center distance between the first contact pin and the second contact pin is n multiplied by 3.96 mm, n is a positive integer, and the optimal value is 2.

The fool-proof socket and the first pin are on the same side relative to the thermistor.

The cross sections of the first contact pin and the second contact pin are square.

The first contact pin and the first pin are of an integrated structure.

The second contact pin and the connecting insertion piece are of an integrated structure.

This application still is provided with N end and connects the inserted sheet, and the inserted sheet is connected to N end includes first wiring end, second wiring end, the third link of mutual electric connection, and the inserted sheet is connected to N end and the welding is participated in with first, and third link and casing cooperation joint.

The external power connector can be connected only by one-time plugging, and the anti-fool function and the anti-pull-off function are achieved, so that the structure is simple, the use is convenient, and materials are saved.

Drawings

Fig. 1 is a schematic view of a prior art starter terminal.

FIG. 2 is an exploded view of example 1 of the present application;

FIG. 3 is a perspective view of the embodiment 1 of the present application with the insertion side being the main side;

FIG. 4 is a schematic view of the cover plate side (the side opposite to the inserting side) after the cover plate is removed in example 1 of the present application;

FIG. 5 is a schematic view of a cover-plate-side-based housing according to embodiment 1 of the present application;

fig. 6 is a schematic diagram illustrating a connection relationship between a first pin and a first pin according to embodiment 1 of the present application;

fig. 7 is a schematic view illustrating a connection relationship between a second pin and a connection insert in embodiment 1 of the present application;

fig. 8 is a schematic view of an embodiment 1 of the present application showing a structure in which a first pin and a first pin are integrated;

fig. 9 is a schematic view of an integrated structure of a second pin and a connecting insert in embodiment 1 of the present application;

FIG. 10 is a perspective view of embodiment 2 of the present application;

fig. 11 is a schematic view of an N-terminal connection tab in embodiment 2 of the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present application and are not limited to the following examples. The up and down directions described in this application are relative to fig. 4.

Example 1

Referring to fig. 2, the basic structure of the embodiment of the present application is disclosed in the patent document having the application number 201620020246.X, and the similar internal structure and connection relationship thereof are not described one by one. Application example 1 includes a cover plate 1, a second pin 2, a thermistor 3, a housing 4, a second pin 5 (corresponding to one tab connection end 5-2 of an L-terminal 5 in 201620020246. X), a first pin 6 (corresponding to a tab connection end 8-2 on an N-terminal 8 in 201620020246.X or a tab connection end 2-3 on a first pin 2), a connection tab 7 (corresponding to an L-terminal 5 in 201620020246. X), a first pin 8, and a stop strip 9. Only the structure, connection and positioning relationship among the first pin 6, the second pin 5, the fool-proof socket 4-1, the connection insert 7, the first pin 8 and the housing 4 related to the modified portions of the present application will be described below.

Referring to fig. 3, the most important improvement of the present application is to design a fool-proof socket 4-1 to be mated with an external power connector of a consumer, the fool-proof function of the fool-proof socket 4-1 is realized by the fool-proof socket 4-1 being asymmetric with respect to the center line in the up-down direction thereof, so that the fool-proof socket 4-1 is not inserted when the external power connector is turned up and down. After the assembly of the embodiment of the application, the center distance between the first pin 6 and the second pin 5 is n multiplied by 3.96 mm, and n is a positive integer (preferably 2); an external power supply connector of an electric appliance (a refrigerator in a specific example) is inserted into a foolproof socket 4-1 (a concave positioning frame in a specific example and faces towards the left lower part in a figure 3) on a shell 4, the external power supply connector (a plug bush in the embodiment, the plug bush comprises an N end and an L end, the N end is matched with a first contact pin 6, the L end is matched with a second contact pin 5) is inserted into the foolproof socket 4-1 to be electrically connected with the first contact pin 6 and the second contact pin 5, the foolproof socket 4-1 on the shell 4 has a foolproof (reverse insertion and no advance) effect, the refrigerator external power supply connector is ensured to be correctly connected with a starter, and the condition of wrong insertion of an external power supply line of the refrigerator can not occur, after the external power supply connector of the refrigerator is inserted into the foolproof socket 4-1, the claw of the external power supply connector is clamped on the anti-pull-off claw 4-2 on the shell 4, so that the reliable connection of the external power supply wire of the refrigerator is ensured.

Referring to fig. 4 to 7, after the second pin 5 is fixedly connected with the connecting inserting sheet 7, the second pin 5 is inserted into a second pin positioning cavity 4-4 on the housing 4, the inserting sheet 7-1 on the connecting inserting sheet 7 is inserted into a connecting inserting sheet positioning cavity 4-3 on the housing 4, after the first pin 6 is fixedly connected with the first pin 8, the first pin 6 is inserted into a first pin positioning cavity 4-6 on the housing 4, the inserting sheet 8-1 on the first pin 8 is inserted into a first pin positioning cavity 4-5 on the housing 4, and the first reed 8-2 on the first pin 8 is contacted with the thermistor 3, so that the first pin 6 is electrically connected with the thermistor 3; the second pin 5 and the connecting insertion sheet 7 are fixedly connected and then independently installed on the shell 4.

Referring to fig. 5, the housing 4 is further provided with a thermal protector positioning cavity 4-7 and thermal protector positioning claws 4-8 for facilitating the installation and positioning of the thermal protector.

Referring to fig. 8, the first pin 6 and the first pin 8 in the embodiment of the present application may be of an integral structure, which has the advantages of reliable connection, simple assembly, and saving material in the connection portion between the first pin 6 and the first pin 8 in the split structure shown in fig. 6.

Referring to fig. 9, the second pin 6 and the connecting tab 7 of the embodiment of the present application may also be of an integral structure, which has the advantages of reliable connection and simple assembly, and saves the material of the split structure shown in fig. 7 at the connecting portion of the second pin 6 and the connecting tab 7.

Example 2

Referring to fig. 10 and fig. 11, which are schematic views of embodiment 2 of the present application, embodiment 2 is added with an N-terminal connection blade 10 (for switching a neutral wire) on the basis of embodiment 1.

The N-terminal connecting insert 10 in this embodiment is provided with a first terminal 10-1, a second terminal 10-2, a third connecting terminal 10-3 and a welding part 10-4, after the N-terminal connecting insert 10 is inserted into a corresponding position of the housing 4, the welding part 10-4 is welded with the first pin 8, and the third connecting terminal 10-3 is connected with a positioning square hole of the housing 4 in a clamping manner. The first terminal 10-1 is used for power supply N-terminal switching and the second terminal 10-2 is used for operating a capacitive connection.

All simple variations and combinations of the technical features and technical solutions of the present application are considered to fall within the scope of the present application.

Claims (10)

1. The utility model provides a starter, includes casing, first participate in, connects the inserted sheet, and first participate in, connect the inserted sheet and all install on the casing its characterized in that: still be provided with first contact pin, second contact pin, first contact pin, second contact pin setting are in on only one prevent slow-witted socket on the casing, prevent slow-witted socket for its upper and lower direction central line asymmetry, first contact pin is connected with first participating in the electricity, and the second contact pin is connected with being connected the inserted sheet electricity, and external power source connector is fixed with preventing slow-witted socket cooperation, and the N of external power source connector holds, L respectively with first contact pin, second contact pin cooperation electricity is connected.

2. The starter of claim 1 wherein: the fool-proof socket is a concave positioning frame, and the concave shape of the concave positioning frame faces upwards or downwards.

3. The starter of claim 1 wherein: the foolproof socket is provided with a pull-out preventing claw which is matched and clamped with the claw of the external power connector.

4. The starter of claim 1 wherein: the shell is provided with a first pin positioning cavity, a first pin inserting positioning cavity, a second pin positioning cavity and a connecting insertion piece positioning cavity.

5. Starter according to any one of claims 1 to 4, characterized in that: the center distance between the first pin and the second pin is n multiplied by 3.96 mm, and n is a positive integer.

6. Starter according to any one of claims 1 to 4, characterized in that: the fool-proof socket and the first pin are on the same side relative to the thermistor.

7. Starter according to any one of claims 1 to 4, characterized in that: the cross sections of the first pin and the second pin are square.

8. Starter according to any one of claims 1 to 4, characterized in that: the first contact pin and the first pin are of an integrated structure.

9. Starter according to any one of claims 1 to 4, characterized in that: the second contact pin and the connecting insertion piece are of an integrated structure.

10. Starter according to any one of claims 1 to 4, characterized in that: still be provided with N end and connect the inserted sheet, the inserted sheet is connected to N end includes first wiring end, second wiring end, the third link of mutual electric connection, and the inserted sheet is connected to N end and is participated in the welding with first, and the third link cooperates the joint with the casing.

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