CN218771823U - Multi-terminal PTC starter suitable for small installation space - Google Patents

Abstract

The utility model relates to a be suitable for small-size installation space's multiterminal PTC starter. The utility model discloses a starter body, zero line terminal, live wire terminal and ground terminal, the starter body includes base and apron, the apron setting is on the base, be provided with zero line terminal mounting groove, live wire terminal mounting groove, ground terminal mounting groove and hot protector installation cavity on the base, be provided with first through-hole and second through-hole on the apron, zero line terminal, live wire terminal and ground terminal set up respectively in zero line terminal mounting groove, live wire terminal mounting groove and ground terminal mounting groove, its structural feature lies in: the starter body further comprises a first pin, a second pin, a wedge and a first PTC chip which are arranged in a cavity formed by the base and the cover plate, the end portion of the first pin and the end portion of the second pin are exposed out of the base, an avoiding position is arranged on the base, the zero line terminal is connected with the first pin, and the first pin, the second pin and the wedge are all in electrical contact with the first PTC chip.

Description

Multi-terminal PTC starter suitable for small installation space

Technical Field

The utility model relates to a be suitable for multi-terminal PTC starter of small-size installation space can satisfy the connection and the switching of the electric wire like devices such as domestic refrigeration electrical apparatus power live wire, zero line, earth connection and working capacitor, pilot lamp, temperature controller, electric control panel.

Background

The compressor motors in refrigerators, freezers and other refrigeration appliances generally adopt single-phase asynchronous motors, and two sets of windings, namely a working winding (also called a main winding) and a starting winding (also called an auxiliary winding), are arranged on an internal stator of the single-phase asynchronous motor; when the motor is started, the main winding and the auxiliary winding work simultaneously, and when the rotating speed of the rotor reaches 75% -80% of the synchronous rotating speed, the auxiliary winding loop needs to be cut off in time, so that the motor enters a normal operation stage.

The purpose of "cutting off" the secondary winding loop is usually accomplished by using a thermistor, i.e. a PTC starter, connected in series in the secondary winding loop; the PTC starter is in a low resistance state at normal temperature, and does not influence the electric conduction of the secondary winding loop; when starting, the PTC element is heated rapidly under the action of the secondary winding current, after reaching the Curie temperature, the resistance value is increased rapidly to more than dozens of kilohms, and the current of the secondary winding loop is reduced to less than ten milliamperes, which is similar to an 'open circuit' state, thereby achieving the purpose of cutting off the secondary winding loop in time.

In the market, also design into a structure of multiple terminals with the PTC starter now, can realize connecting and switching the live wire in the refrigeration utensil, zero line, earth connection to corresponding position with the electric wire of devices such as working capacitor, pilot lamp, temperature controller, electrical control panel, avoid taking place because of the wiring mistake that the wiring complicacy brought, improve online production efficiency, reduce the degree of difficulty of inspection and maintenance, nevertheless the required space of installation this kind of structure product will also be bigger.

Because of the small size of some compressor-mounted starters, the conventional multi-terminal PTC starter cannot be mounted (as shown in fig. 30 and 31, the lower right part of the mounting space, and the grounding screw on the compressor bracket have an assembly interference phenomenon with the starter), and it is necessary to newly develop a multi-terminal PTC starter suitable for a small mounting space, in addition to avoiding the assembly interference with the compressor bracket and the housing, in consideration of the reasonableness and safety of the terminal layout.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a rational in infrastructure design's multi-terminal PTC starter that is suitable for small-size installation space.

The utility model provides a technical scheme that above-mentioned problem adopted is: the multi-terminal PTC starter suitable for the small installation space comprises a starter body, a zero line terminal, a fire line terminal and a grounding terminal, wherein the starter body comprises a base and an cover plate, the cover plate is installed on the base, a zero line terminal installation groove, a fire line terminal installation groove, a grounding terminal installation groove and a thermal protector installation cavity are formed in the base, a first through hole and a second through hole are formed in the cover plate, the zero line terminal, the fire line terminal and the grounding terminal are respectively arranged in the zero line terminal installation groove, the fire line terminal installation groove and the grounding terminal installation groove (as shown in figures 1-6),

the structure is characterized in that: the starter body further comprises a first pin, a second pin, a wedge and a first PTC chip which are installed in a cavity formed by the base and the cover plate, the end portion of the first pin and the end portion of the second pin are exposed out of the base, an avoiding position is arranged on the base, the zero line terminal is electrically connected with the first pin, and the first pin, the second pin and the wedge are all in electrical contact with the first PTC chip (as shown in figure 13). The avoiding position is arranged on the base, so that the size of the right lower part of the multi-terminal PTC starter can be reduced, the installation space of the multi-terminal PTC starter is saved, and the condition of interference with the grounding screw on the compressor support cannot occur in the installation process.

Further, the zero line terminal includes zero line terminal body, one side of zero line terminal body is provided with zero line terminal connecting piece, the opposite side of zero line terminal body is provided with zero line terminal setting element, the middle part of zero line terminal body is provided with the welding bulge (as shown in fig. 15, fig. 18). Through zero line terminal connecting piece can make zero line terminal connection convenient, can make the fixed of zero line terminal on the base more firm through zero line terminal location portion and zero line terminal lock catch portion.

Furthermore, the fire wire terminal comprises a fire wire terminal body, one side of the fire wire terminal body is provided with a fire wire terminal connecting piece, and the other side of the fire wire terminal body is provided with a fire wire terminal positioning piece (as shown in fig. 16 and 19). Can make the fire line terminal connect conveniently through fire line terminal connecting piece, can make the fixed of fire line terminal on the base more firm through fire line terminal location portion and fire line terminal hasp portion.

Further, the ground terminal includes a ground terminal body, one side of the ground terminal body is provided with a ground terminal connecting member, and the other side of the ground terminal body is provided with a ground terminal positioning member (as shown in fig. 17 and 20). Can make ground terminal connect conveniently through the ground terminal connecting piece, can make ground terminal fixed on the base more firm through ground terminal location portion and ground terminal hasp portion.

Further, a first pin welding sheet and a first pin inserting sheet are arranged on one side of the first pin, a first pin inserting hole is arranged on the other side of the first pin, a first pin first contact end is arranged in the middle of the first pin, the first pin welding sheet is electrically connected with the neutral terminal, the first pin inserting hole is matched with the first through hole, and the first pin first contact end is electrically connected with the first PTC chip (as shown in fig. 21); a second pin inserting sheet and a second pin positioning sheet are arranged on one side of the second pin, a second pin inserting hole is formed in the other side of the second pin, a second pin contact end is arranged in the middle of the second pin, the second pin inserting hole is matched with the second through hole, and the second pin contact end is in electrical contact with the first PTC chip (as shown in fig. 22).

Further, another technical object of the present invention is to provide another multi-terminal PTC starter suitable for a small installation space.

The above technical object of the present invention can be achieved by the following technical solutions.

A multi-terminal PTC starter suitable for a small installation space comprises a starter body, a zero line terminal, a fire line terminal and a grounding terminal, wherein the starter body comprises a base and an cover plate, the cover plate is installed on the base, a zero line terminal installation groove, a fire line terminal installation groove, a grounding terminal installation groove and a thermal protector installation cavity are arranged on the base, a first through hole and a second through hole are arranged on the cover plate, the zero line terminal, the fire line terminal and the grounding terminal are respectively arranged in the zero line terminal installation groove, the fire line terminal installation groove and the grounding terminal installation groove (as shown in figures 7-12),

the structure is characterized in that: the starter body is characterized by further comprising a first pin, a second pin, a wedge, a first PTC chip, a second PTC chip, a first reed, a second reed and a silicon controlled rectifier which are installed in a cavity formed by the base and the cover plate, the end of the first pin and the end of the second pin are exposed out of the base, an avoidance position is arranged on the base, the zero line terminal is electrically connected with the first pin, the first pin is electrically contacted with the wedge, the first PTC chip and the second PTC chip respectively, the first PTC chip is contacted with the first reed, the second PTC chip is contacted with the second reed, and the second pin, the first reed and the second reed are connected with the silicon controlled rectifier (as shown in figure 14). The avoiding position is arranged on the base, so that the size of the right lower part of the multi-terminal PTC starter can be reduced, the installation space of the multi-terminal PTC starter is saved, and the condition of interference with the grounding screw on the compressor support cannot occur in the installation process.

Further, the zero line terminal includes zero line terminal body, one side of zero line terminal body is provided with zero line terminal connecting piece, the opposite side of zero line terminal body is provided with zero line terminal setting element, the middle part of zero line terminal body is provided with the welding bulge (as shown in fig. 15, fig. 18). Through zero line terminal connecting piece can make zero line terminal connection convenient, can make the fixed of zero line terminal on the base more firm through zero line terminal location portion and zero line terminal lock catch portion.

Furthermore, the fire wire terminal comprises a fire wire terminal body, one side of the fire wire terminal body is provided with a fire wire terminal connecting piece, and the other side of the fire wire terminal body is provided with a fire wire terminal positioning piece (as shown in fig. 16 and 19). Can make the fire line terminal connect conveniently through fire line terminal connecting piece, can make the fixed of fire line terminal on the base more firm through fire line terminal location portion fire line terminal hasp portion.

Further, the ground terminal includes a ground terminal body, one side of the ground terminal body is provided with a ground terminal connecting member, and the other side of the ground terminal body is provided with a ground terminal positioning member (as shown in fig. 17 and 20). Can make ground terminal connect conveniently through the ground terminal connecting piece, can make ground terminal fixed on the base more firm through ground terminal location portion and ground terminal hasp portion.

Further, a first pin welding sheet and a first pin inserting sheet are arranged on one side of the first pin, a first pin inserting hole is formed in the other side of the first pin, a first pin first contact end and a first pin second contact end (shown in fig. 23) are arranged in the middle of the first pin, the first pin welding sheet is electrically connected with the neutral terminal, the first pin inserting hole is matched with the first through hole, the first pin first contact end is electrically connected with the first PTC chip, and the first pin second contact end is electrically connected with the second PTC chip; a second pin inserting sheet is arranged on one side of the second pin, a second pin inserting hole is formed in the other side of the second pin, a second pin U-shaped groove (shown in figure 24) is formed in the middle of the second pin, and the second pin inserting hole is matched with the second through hole; the first reed is provided with a first reed contact end and a first reed U-shaped groove (shown in figure 25), and the first reed contact end is in electrical contact with the first PTC chip (shown in figure 25); the second reed is provided with a second reed contact end and a second reed U-shaped groove (shown in fig. 26), and the second reed contact end is in electrical contact with a second PTC chip (shown in fig. 26); and a first pole, a second pole and a trigger pole are arranged on the silicon controlled rectifier (as shown in fig. 27), and the first pole, the second pole and the trigger pole are respectively and electrically connected with the second pin U-shaped groove, the first reed U-shaped groove and the second reed U-shaped groove (as shown in fig. 14).

Compared with the prior art, the utility model has the advantages of it is following: the avoidance position is arranged on the base, so that the volume of the lower right part of the whole multi-terminal PTC starter can be reduced, the purpose of saving the installation space is achieved, the multi-terminal PTC starter is convenient to install, and meanwhile, the situation of interference with a grounding screw on a compressor bracket can not occur in the process of installing the multi-terminal PTC starter; the zero line terminal is electrically connected with the inside of the multi-terminal PTC starter, and the live wire terminal and the grounding terminal are not electrically connected with the inside of the multi-terminal PTC starter, so that the normal work of the multi-terminal starter can not be influenced while the wire connection and the switching of devices such as a working capacitor, an indicator lamp, a temperature controller, an electric control board and the like in a household refrigeration appliance can be met.

Drawings

Fig. 1 is a schematic perspective view of a multi-terminal PTC starter according to embodiment 1 of the present invention.

Fig. 2 is a schematic perspective view of the other side of the multi-terminal PTC starter according to embodiment 1 of the present invention.

Fig. 3 is a schematic view of the internal structure of the multi-terminal PTC starter of embodiment 1 of the present invention with the cover removed.

Fig. 4 is a schematic perspective view of a multi-terminal PTC starter according to embodiment 2 of the present invention.

Fig. 5 is a schematic perspective view of the other side of the multi-terminal PTC starter according to embodiment 2 of the present invention.

Fig. 6 is a schematic view of the internal structure of the multi-terminal PTC starter removing cover plate according to embodiment 2 of the present invention.

Fig. 7 is a schematic perspective view of a multi-terminal PTC starter according to embodiment 3 of the present invention.

Fig. 8 is a schematic perspective view of the other side of the multi-terminal PTC starter according to embodiment 3 of the present invention.

Fig. 9 is a schematic diagram of the internal structure of the multi-terminal PTC starter of embodiment 3 of the present invention with the cover plate removed.

Fig. 10 is a schematic perspective view of a multi-terminal PTC starter according to embodiment 4 of the present invention.

Fig. 11 is a schematic perspective view of the other side of the multi-terminal PTC starter according to embodiment 4 of the present invention.

Fig. 12 is an internal structural view of a multi-terminal PTC starter of embodiment 4 of the present invention with a cover plate removed.

Fig. 13 is a schematic view showing the internal connection structure of the multi-terminal PTC starter according to embodiments 1 and 2 of the present invention.

Fig. 14 is a schematic view showing the internal connection structure of the multi-terminal PTC starter according to embodiments 3 and 4 of the present invention.

Fig. 15 is a schematic perspective view of the neutral terminal according to embodiments 1 and 3 of the present invention.

Fig. 16 is a schematic perspective view of fire wire terminals according to embodiments 1 and 3 of the present invention.

Fig. 17 is a schematic perspective view of the ground terminal according to embodiments 1 and 3 of the present invention.

Fig. 18 is a schematic perspective view of the neutral terminal according to embodiments 2 and 4 of the present invention.

Fig. 19 is a schematic perspective view of fire wire terminals according to embodiments 2 and 4 of the present invention.

Fig. 20 is a schematic perspective view of the ground terminal according to embodiments 2 and 4 of the present invention.

Fig. 21 is a schematic perspective view of the first pin according to embodiments 1 and 2 of the present invention.

Fig. 22 is a schematic perspective view of the second pin according to embodiments 1 and 2 of the present invention.

Fig. 23 is a schematic perspective view of the first pin according to embodiments 3 and 4 of the present invention.

Fig. 24 is a schematic perspective view of the second pin according to embodiments 3 and 4 of the present invention.

Fig. 25 is a schematic perspective view of the first reed according to embodiments 3 and 4 of the present invention.

Fig. 26 is a schematic perspective view of a second reed according to embodiments 3 and 4 of the present invention.

Fig. 27 is a schematic perspective view of the thyristors in embodiments 3 and 4 of the present invention.

Fig. 28 is a schematic view of the mounting structure of the multi-terminal PTC starter according to embodiments 1 and 2 of the present invention.

Fig. 29 is a schematic view of the mounting structure of the multi-terminal PTC starter according to embodiments 3 and 4 of the present invention.

Fig. 30 is a schematic view of a multi-terminal PTC starter mounting structure of the prior art.

Fig. 31 is a schematic view of another prior art multi-terminal PTC starter mounting arrangement.

In the figure: a zero line terminal A: the zero line terminal comprises a zero line terminal body A1, a welding bulge A2, a zero line insert terminal A3, a zero line terminal lock catch A4, a zero line screw terminal A5, a zero line terminal base A6, a zero line terminal anti-rotation lug A7, a zero line terminal folding edge A8 and a zero line terminal screw hole A9;

a fire wire terminal B: the fire wire terminal comprises a fire wire terminal body B1, a fire wire insert terminal B2, a fire wire terminal lock catch B3, a fire wire screw terminal B4, a fire wire terminal base B5, a fire wire terminal anti-rotation lug B6, a fire wire terminal folding edge B7 and a fire wire terminal screw hole B8;

a ground terminal C: the grounding terminal comprises a grounding terminal body C1, a grounding insert terminal C2, a grounding screw terminal C3, a grounding terminal lock tongue C4, a grounding terminal base C5, a grounding terminal anti-rotation lug C6, a grounding terminal folding edge C7 and a grounding terminal screw hole C8;

base 1: a zero line terminal mounting groove 11, a fire line terminal mounting groove 12, a grounding terminal mounting groove 13, a thermal protector mounting cavity 14 and an avoidance position 15;

and (3) cover plate 2: a first through hole 21, a second through hole 22;

first pin 3: the first pin welding sheet 31, the first pin inserting sheet 32, the first pin inserting hole 33, the first pin first contact end 34 and the first pin second contact end 35;

second pin 4: a second pin inserting sheet 41, a second pin inserting hole 42, a second pin contact end 43, a second pin positioning sheet 44 and a second pin U-shaped groove 45;

a wedge 5; a first PTC chip 6; a second PTC chip 7;

first reed 8: a first reed contact end 81 and a first reed U-shaped groove 82;

second reed 9: a second reed contact end 91 and a second reed U-shaped groove 92;

silicon controlled rectifier 10: a first pole 101, a second pole 102, a trigger pole 103.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present invention and are not intended to limit the present invention.

It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, in the present specification, if there are terms such as "upper", "lower", "left", "right", "middle" and "one", they are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.

Example 1 (as shown in fig. 1-3, fig. 13, fig. 15-17, fig. 21-22).

The multi-terminal PTC starter applicable to a small installation space in this embodiment includes a starter body, a neutral terminal a, a live terminal B, and a ground terminal C, where the starter body includes a base 1 and a cover plate 2, and a first pin 3, a second pin 4, a wedge 5, and a first PTC chip 6 installed in a cavity formed by the base 1 and the cover plate 2, and an end of the first pin 3 and an end of the second pin 4 are exposed out of the base 1, the cover plate 2 is installed on the base 1, the base 1 is provided with a neutral terminal installation groove 11, a live terminal installation groove 12, a ground terminal installation groove 13, a thermal protector installation cavity 14, and a relief position 15, the cover plate 2 is provided with a first through hole 21 and a second through hole 22, the neutral terminal a, the live terminal B, and the ground terminal C are respectively disposed in the neutral terminal installation groove 11, the live terminal installation groove 12, and the ground terminal installation groove 13 (as shown in fig. 1 to 3), the neutral terminal a is electrically connected to the first pin 3, the second pin 4, and the wedge 5 are electrically contacted to the first PTC chip 6 (as shown in fig. 13).

Zero line terminal A in this embodiment includes zero line terminal body A1, one side of zero line terminal body A1 is provided with zero line terminal connecting piece, zero line terminal connecting piece includes zero line inserted sheet terminal A3 and zero line screw terminal A5, zero line inserted sheet terminal A3 and zero line screw terminal A5 all set up the one side at zero line terminal body A1, be provided with zero line terminal on the zero line screw terminal A5 and prevent rotary ear A7, zero line terminal hem A8 and zero line terminal screw hole A9, the opposite side of zero line terminal body A1 is provided with zero line terminal setting element, zero line terminal setting element includes zero line terminal hasp A4 and zero line terminal base A6, zero line terminal hasp A4 and zero line terminal base A6 all set up the opposite side at zero line terminal body A1, the middle part of zero line terminal body A1 is provided with welding bulge A2 (as shown in figure 15).

Fire wire terminal B in this embodiment includes fire wire terminal body B1, one side of fire wire terminal body B1 is provided with the fire wire terminal connecting piece, the fire wire terminal connecting piece includes fire wire inserted sheet terminal B2 and fire wire screw terminal B4, fire wire inserted sheet terminal B2 and fire wire screw terminal B4 all set up the one side at fire wire terminal body B1, be provided with fire wire terminal anti-rotation ear B6 on the fire wire screw terminal B4, fire wire terminal hem B7 and fire wire terminal screw hole B8, fire wire terminal body B1's opposite side is provided with the fire wire terminal setting element, the fire wire terminal setting element includes fire wire terminal hasp B3 and fire wire terminal base B5, fire wire terminal hasp B3 and fire wire terminal base B5 all set up the opposite side at fire wire terminal body B1 (as shown in fig. 16).

Ground terminal C in this embodiment includes ground terminal body C1, one side of ground terminal body C1 is provided with the ground terminal connecting piece, the ground terminal connecting piece includes two inserted sheet terminals C2 and ground screw terminal C3 of ground connection, two ground connection inserted sheet terminals C2 and ground screw terminal C3 all set up the one side at ground terminal body C1, be provided with ground terminal on the ground screw terminal C3 and prevent turning round ear C6, ground terminal hem C7 and ground terminal screw hole C8, the opposite side of ground terminal body C1 is provided with the ground terminal setting element, the ground terminal setting element includes ground terminal base C5, ground terminal base C5 sets up the opposite side at ground terminal body C1, be provided with ground terminal spring bolt C4 on the ground terminal base C5 (as shown in fig. 17).

In this embodiment, the locking portions of the terminals are twisted by a special tool to a certain angle, so that the terminals can be locked and fixed in the respective mounting grooves.

In this embodiment, a first pin soldering piece 31 and a first pin inserting piece 32 are provided on one side of the first pin 3, a first pin inserting hole 33 is provided on the other side of the first pin 3, a first pin first contact end 34 is provided in the middle of the first pin 3, the first pin soldering piece 31 is electrically connected to the neutral terminal a, the first pin inserting hole 33 is fitted to the first through hole 21, and the first pin first contact end 34 is electrically connected to the first PTC chip 6 (see fig. 21).

In this embodiment, one side of the second pin 4 is provided with a second pin inserting piece 41 and a second pin positioning piece 44, the other side of the second pin 4 is provided with a second pin inserting hole 42, the middle part of the second pin 4 is provided with a second pin contacting end 43, the second pin inserting hole 42 is matched with the second through hole 22, and the second pin contacting end 43 is electrically contacted with the first PTC chip 6 (as shown in fig. 22).

The connection relationship is as follows: in the single-phase power cord of electrical apparatus, the zero line is connected with the zero line terminal connecting piece in the zero line terminal A, and the live wire is connected with the live wire terminal connecting piece in the live wire terminal B, and the ground wire is connected with the ground terminal connecting piece in the ground terminal C, and devices such as working capacitor, pilot lamp, temperature controller, electric control board can be connected according to the needs of electrical apparatus function to all the other terminals or inserted sheets.

Example 2 (as shown in fig. 4-6, fig. 13, fig. 18-20, fig. 21-22).

The multi-terminal PTC starter suitable for a small installation space in this embodiment includes a starter body, a neutral terminal a, a live terminal B and a ground terminal C, where the starter body includes a base 1 and a cover plate 2, and a first pin 3, a second pin 4, a wedge 5 and a first PTC chip 6 installed in a cavity formed by the base 1 and the cover plate 2, and an end of the first pin 3 and an end of the second pin 4 are exposed out of the base 1, the cover plate 2 is installed on the base 1, the base 1 is provided with a neutral terminal installation groove 11, a live terminal installation groove 12, a ground terminal installation groove 13, a thermal protector installation cavity 14 and an avoidance position 15, the cover plate 2 is provided with a first through hole 21 and a second through hole 22, the neutral terminal a, the live terminal B and the ground terminal C are respectively disposed in the neutral terminal installation groove 11, the live terminal installation groove 12 and the ground terminal installation groove 13 (as shown in fig. 4 to 6), the neutral terminal a is electrically connected to the first pin 3, the second pin 4 and the wedge 5 are electrically contacted to the first PTC chip 6 (as shown in fig. 13).

Zero line terminal A in this embodiment includes zero line terminal body A1, one side of zero line terminal body A1 is provided with zero line terminal connecting piece, zero line terminal connecting piece includes two zero line inserted sheet terminals A3, two zero line inserted sheet terminals A3 all set up the one side at zero line terminal body A1, zero line terminal body A1's opposite side is provided with zero line terminal setting element, zero line terminal setting element includes zero line terminal hasp A4 and zero line terminal base A6, zero line terminal hasp A4 and zero line terminal base A6 all set up the opposite side at zero line terminal body A1, zero line terminal body A1's middle part is provided with protruding fat A2 of welding (as shown in fig. 18).

Fire wire terminal B in this embodiment includes fire wire terminal body B1, one side of fire wire terminal body B1 is provided with the fire wire terminal connecting piece, the fire wire terminal connecting piece includes two fire wire inserted sheet terminals B2, two fire wire inserted sheet terminals B2 all set up the one side at fire wire terminal body B1, the opposite side of fire wire terminal body B1 is provided with the fire wire terminal setting element, the fire wire terminal setting element includes fire wire terminal hasp B3 and fire wire terminal base B5, fire wire terminal hasp B3 and fire wire terminal base B5 all set up the opposite side at fire wire terminal body B1 (as shown in figure 19).

Ground terminal C in this embodiment includes ground terminal body C1, one side of ground terminal body C1 is provided with the ground terminal connecting piece, the ground terminal connecting piece includes three ground connection inserted sheet terminal C2, three ground connection inserted sheet terminal C2 all sets up the one side at ground terminal body C1, the opposite side of ground terminal body C1 is provided with the ground terminal setting element, the ground terminal setting element includes ground terminal base C5, ground terminal base C5 sets up the opposite side at ground terminal body C1, be provided with ground terminal spring bolt C4 on the ground terminal base C5 (as shown in fig. 20).

In this embodiment, the locking portions of the terminals are twisted by a special tool to a certain angle, so that the terminals can be locked and fixed in the respective mounting grooves.

In this embodiment, a first pin soldering piece 31 and a first pin inserting piece 32 are provided on one side of the first pin 3, a first pin inserting hole 33 is provided on the other side of the first pin 3, a first pin first contact end 34 is provided in the middle of the first pin 3, the first pin soldering piece 31 is electrically connected to the neutral terminal a, the first pin inserting hole 33 is fitted to the first through hole 21, and the first pin first contact end 34 is electrically connected to the first PTC chip 6 (see fig. 21).

In this embodiment, the second pin 4 is provided at one side thereof with a second pin insertion piece 41 and a second pin positioning piece 44, the second pin 4 is provided at the other side thereof with a second pin insertion hole 42, the second pin 4 is provided at a middle portion thereof with a second pin contact end 43, the second pin insertion hole 42 is fitted into the second through hole 22, and the second pin contact end 43 is electrically contacted with the first PTC chip 6 (see fig. 22).

The connection relationship is as follows: in the single-phase power cord of electrical apparatus, the zero line is connected with the zero line terminal connecting piece in the zero line terminal A, and the live wire is connected with the live wire terminal connecting piece in the live wire terminal B, and the ground wire is connected with the ground terminal connecting piece in the ground terminal C, and devices such as working capacitor, pilot lamp, temperature controller, electric control board can be connected according to the needs of electrical apparatus function to all the other terminals or inserted sheets.

Example 3 (as shown in fig. 7-9, fig. 14, fig. 15-17, fig. 23-27).

The multi-terminal PTC starter suitable for a small installation space in the present embodiment includes a starter body, a neutral terminal a, a hot terminal B, and a ground terminal C, where the starter body includes a base 1 and a cover plate 2, and a first pin 3, a second pin 4, a wedge 5, a first PTC chip 6, a second PTC chip 7, a first reed 8, a second reed 9, and a thyristor 10 installed in a cavity formed by the base 1 and the cover plate 2, and an end of the first pin 3 and an end of the second pin 4 are exposed out of the base 1, the cover plate 2 is installed on the base 1, the base 1 is provided with a neutral terminal installation groove 11, a hot terminal installation groove 12, a ground terminal installation groove 13, a thermal protector installation cavity 14, and an avoidance position 15, the cover plate 2 is provided with a first through hole 21 and a second through hole 22, the neutral terminal a, the hot terminal B, and the ground terminal C are respectively disposed in the neutral terminal installation groove 11, the hot terminal installation groove 12, and the ground terminal installation groove 13 (as shown in fig. 7-9), the neutral terminal a is electrically connected to the first pin 3, the first pin 3 is electrically connected to the wedge 5, the second pin 6 is electrically connected to the second pin 6, the PTC chip 7 is electrically connected to the second pin 8, and the second pin 9, and the second pin 8 are electrically connected to the second pin 10, as shown in the second pin 8.

Zero line terminal A in this embodiment includes zero line terminal body A1, one side of zero line terminal body A1 is provided with zero line terminal connecting piece, zero line terminal connecting piece includes zero line inserted sheet terminal A3 and zero line screw terminal A5, zero line inserted sheet terminal A3 and zero line screw terminal A5 all set up the one side at zero line terminal body A1, be provided with zero line terminal on the zero line screw terminal A5 and prevent rotary ear A7, zero line terminal hem A8 and zero line terminal screw hole A9, the opposite side of zero line terminal body A1 is provided with zero line terminal setting element, zero line terminal setting element includes zero line terminal hasp A4 and zero line terminal base A6, zero line terminal hasp A4 and zero line terminal base A6 all set up the opposite side at zero line terminal body A1, the middle part of zero line terminal body A1 is provided with welding bulge A2 (as shown in figure 15).

Fire wire terminal B in this embodiment includes fire wire terminal body B1, one side of fire wire terminal body B1 is provided with the fire wire terminal connecting piece, the fire wire terminal connecting piece includes live wire inserted sheet terminal B2 and live wire screw terminal B4, live wire inserted sheet terminal B2 and live wire screw terminal B4 all set up the one side at fire wire terminal body B1, be provided with fire wire terminal on the live wire screw terminal B4 and prevent changeing ear B6, fire wire terminal hem B7 and fire wire terminal screw hole B8, fire wire terminal body B1's opposite side is provided with the fire wire terminal setting element, the fire wire terminal setting element includes fire wire terminal hasp B3 and fire wire terminal base B5, fire wire terminal hasp B3 and fire wire terminal base B5 all set up the opposite side at fire wire terminal body B1 (as shown in fig. 16).

Ground terminal C in this embodiment includes ground terminal body C1, one side of ground terminal body C1 is provided with the ground terminal connecting piece, the ground terminal connecting piece includes two inserted sheet terminals C2 and ground screw terminal C3 of ground connection, two ground connection inserted sheet terminals C2 and ground screw terminal C3 all set up the one side at ground terminal body C1, be provided with ground terminal on the ground screw terminal C3 and prevent turning round ear C6, ground terminal hem C7 and ground terminal screw hole C8, the opposite side of ground terminal body C1 is provided with the ground terminal setting element, the ground terminal setting element includes ground terminal base C5, ground terminal base C5 sets up the opposite side at ground terminal body C1, be provided with ground terminal spring bolt C4 on the ground terminal base C5 (as shown in fig. 17).

In this embodiment, the locking portions of the terminals are twisted by a special tool to a certain angle, so that the terminals can be locked and fixed in the respective mounting grooves.

In this embodiment, a first pin soldering tab 31 and a first pin inserting tab 32 are provided on one side of the first pin 3, a first pin inserting hole 33 is provided on the other side of the first pin 3, a first pin first contact end 34 and a first pin second contact end 35 are provided in the middle of the first pin 3, the first pin soldering tab 31 is electrically connected to the neutral terminal a, the first pin inserting hole 33 is fitted to the first through hole 21, the first pin first contact end 34 is electrically connected to the first PTC chip 6, and the first pin second contact end 35 is electrically connected to the second PTC chip 7 (see fig. 23).

In this embodiment, one side of the second pin 4 is provided with a second pin inserting piece 41, the other side of the second pin 4 is provided with a second pin inserting hole 42, the middle part of the second pin 4 is provided with a second pin U-shaped groove 45, and the second pin inserting hole 42 is matched with the second through hole 22 (as shown in fig. 24).

The first spring 8 in this embodiment has a first spring contact end 81 and a first spring U-shaped groove 82, and the first spring contact end 81 is in electrical contact with the first PTC chip 6 (see fig. 25).

The second spring 9 in this embodiment has a second spring contact end 91 and a second spring U-shaped groove 92, and the second spring contact end 91 is electrically connected to the second PTC chip 7 (see fig. 26).

The thyristor 10 in this embodiment is provided with a first pole 101, a second pole 102, and a trigger pole 103 (as shown in fig. 27).

The first pole 101, the second pole 102, and the trigger pole 103 in this embodiment are electrically connected to the second pin U-shaped slot 45, the first reed U-shaped slot 82, and the second reed U-shaped slot 92, respectively (as shown in fig. 14).

The connection relationship is as follows: in the single-phase power cord of electrical apparatus, the zero line is connected with the zero line terminal connecting piece in the zero line terminal A, and the live wire is connected with the live wire terminal connecting piece in the live wire terminal B, and the ground wire is connected with the ground terminal connecting piece in the ground terminal C, and devices such as working capacitor, pilot lamp, temperature controller, electric control board can be connected according to the needs of electrical apparatus function to all the other terminals or inserted sheets.

Example 4 (as shown in fig. 10-12, 14, 18-20, 23-27).

The multi-terminal PTC starter suitable for a small installation space in the present embodiment includes a starter body, a neutral terminal a, a hot terminal B, and a ground terminal C, where the starter body includes a base 1 and a cover plate 2, and a first pin 3, a second pin 4, a wedge 5, a first PTC chip 6, a second PTC chip 7, a first reed 8, a second reed 9, and a thyristor 10 installed in a cavity formed by the base 1 and the cover plate 2, and an end of the first pin 3 and an end of the second pin 4 are exposed out of the base 1, the cover plate 2 is installed on the base 1, the base 1 is provided with a neutral terminal installation groove 11, a hot terminal installation groove 12, a ground terminal installation groove 13, a thermal protector installation cavity 14, and an avoidance position 15, the cover plate 2 is provided with a first through hole 21 and a second through hole 22, the neutral terminal a, the hot terminal B, and the ground terminal C are respectively disposed in the neutral terminal installation groove 11, the hot terminal installation groove 12, and the ground terminal installation groove 13 (as shown in fig. 10-12), the neutral terminal a is electrically connected to the first pin 3, the first pin 3 is electrically connected to the wedge 5, the second pin 6 is electrically connected to the PTC chip 7, the second pin 6 is electrically connected to the second reed 9, and the second pin 8 (as shown in fig. shown in the second chip).

Zero line terminal A in this embodiment includes zero line terminal body A1, one side of zero line terminal body A1 is provided with zero line terminal connecting piece, zero line terminal connecting piece includes two zero line inserted sheet terminals A3, two zero line inserted sheet terminals A3 all set up the one side at zero line terminal body A1, zero line terminal body A1's opposite side is provided with zero line terminal setting element, zero line terminal setting element includes zero line terminal hasp A4 and zero line terminal base A6, zero line terminal hasp A4 and zero line terminal base A6 all set up the opposite side at zero line terminal body A1, zero line terminal body A1's middle part is provided with protruding fat A2 of welding (as shown in fig. 18).

Fire wire terminal B in this embodiment includes fire wire terminal body B1, one side of fire wire terminal body B1 is provided with the fire wire terminal connecting piece, the fire wire terminal connecting piece includes two fire wire inserted sheet terminals B2, two fire wire inserted sheet terminals B2 all set up the one side at fire wire terminal body B1, fire wire terminal body B1's opposite side is provided with the fire wire terminal setting element, the fire wire terminal setting element includes fire wire terminal hasp B3 and fire wire terminal base B5, fire wire terminal hasp B3 and fire wire terminal base B5 all set up the opposite side at fire wire terminal body B1 (as shown in fig. 19).

Ground terminal C in this embodiment includes ground terminal body C1, one side of ground terminal body C1 is provided with the ground terminal connecting piece, the ground terminal connecting piece includes three ground connection inserted sheet terminal C2, three ground connection inserted sheet terminal C2 all sets up the one side at ground terminal body C1, the opposite side of ground terminal body C1 is provided with the ground terminal setting element, the ground terminal setting element includes ground terminal base C5, ground terminal base C5 sets up the opposite side at ground terminal body C1, be provided with ground terminal spring bolt C4 on the ground terminal base C5 (as shown in fig. 20).

In this embodiment, the locking portions of the terminals are twisted by a special tool to a certain angle, so that the terminals can be locked and fixed in the respective mounting grooves.

In this embodiment, a first pin soldering tab 31 and a first pin inserting tab 32 are provided on one side of the first pin 3, a first pin inserting hole 33 is provided on the other side of the first pin 3, a first pin first contact end 34 and a first pin second contact end 35 are provided in the middle of the first pin 3, the first pin soldering tab 31 is electrically connected to the neutral terminal a, the first pin inserting hole 33 is fitted to the first through hole 21, the first pin first contact end 34 is electrically connected to the first PTC chip 6, and the first pin second contact end 35 is electrically connected to the second PTC chip 7 (see fig. 23).

In this embodiment, one side of the second pin 4 is provided with a second pin inserting piece 41, the other side of the second pin 4 is provided with a second pin inserting hole 42, the middle part of the second pin 4 is provided with a second pin U-shaped groove 45, and the second pin inserting hole 42 is matched with the second through hole 22 (as shown in fig. 24).

The first spring 8 in this embodiment has a first spring contact end 81 and a first spring U-shaped groove 82, and the first spring contact end 81 is in electrical contact with the first PTC chip 6 (see fig. 25).

The second spring 9 in this embodiment has a second spring contact end 91 and a second spring U-shaped groove 92, and the second spring contact end 91 is electrically connected to the second PTC chip 7 (see fig. 26).

The thyristor 10 in this embodiment is provided with a first pole 101, a second pole 102, and a trigger pole 103 (as shown in fig. 27).

The first pole 101, the second pole 102, and the trigger pole 103 in this embodiment are electrically connected to the second pin U-shaped slot 45, the first reed U-shaped slot 82, and the second reed U-shaped slot 92, respectively (as shown in fig. 14).

The connection relationship is as follows: in the single-phase power cord of electrical apparatus, the zero line is connected with the zero line terminal connecting piece in the zero line terminal A, and the live wire is connected with the live wire terminal connecting piece in the live wire terminal B, and the ground wire is connected with the ground terminal connecting piece in the ground terminal C, and devices such as working capacitor, pilot lamp, temperature controller, electrical control board can be connected according to the needs of electrical apparatus function to all the other terminals or inserted sheets.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A multi-terminal PTC starter suitable for a small installation space comprises a starter body, a zero line terminal (A), a live line terminal (B) and a ground terminal (C), wherein the starter body comprises a base (1) and an apron (2), the apron (2) is installed on the base (1), the base (1) is provided with a zero line terminal installation groove (11), a live line terminal installation groove (12), a ground terminal installation groove (13) and a thermal protector installation cavity (14), the apron (2) is provided with a first through hole (21) and a second through hole (22), the zero line terminal (A), the live line terminal (B) and the ground terminal (C) are respectively arranged in the zero line terminal installation groove (11), the live line terminal installation groove (12) and the ground terminal installation groove (13),

the method is characterized in that: starter body is still including installing first participating in (3), second in the cavity that base (1) and apron (2) are constituteed participating in (4), slide wedge (5) and first PTC chip (6), and the tip of first participating in (3) and the tip of second participating in (4) expose in base (1), be provided with on base (1) and dodge position (15), zero line terminal (A) is connected with first participating in (3) electricity, first participating in (3), second participate in (4) and slide wedge (5) all with first PTC chip (6) electrical contact.

2. The multi-terminal PTC starter adapted for a small installation space according to claim 1, wherein: zero line terminal (A) includes zero line terminal body (A1), one side of zero line terminal body (A1) is provided with zero line terminal connecting piece, the opposite side of zero line terminal body (A1) is provided with zero line terminal setting element, the middle part of zero line terminal body (A1) is provided with the protruding fat (A2) of welding.

3. The multi-terminal PTC starter adapted for a small installation space according to claim 1, wherein: fire wire terminal (B) includes fire wire terminal body (B1), one side of fire wire terminal body (B1) is provided with fire wire terminal connecting piece, the opposite side of fire wire terminal body (B1) is provided with fire wire terminal setting element.

4. The multi-terminal PTC starter adapted for a small installation space according to claim 1, wherein: the grounding terminal (C) comprises a grounding terminal body (C1), a grounding terminal connecting piece is arranged on one side of the grounding terminal body (C1), and a grounding terminal positioning piece is arranged on the other side of the grounding terminal body (C1).

5. The multi-terminal PTC starter adapted for a small installation space according to claim 1, wherein: a first pin welding sheet (31) and a first pin inserting sheet (32) are arranged on one side of the first pin (3), a first pin inserting hole (33) is formed in the other side of the first pin (3), a first pin first contact end (34) is arranged in the middle of the first pin (3), the first pin welding sheet (31) is electrically connected with a neutral terminal (A), the first pin inserting hole (33) is matched with the first through hole (21), and the first pin first contact end (34) is electrically connected with the first PTC chip (6);

one side of the second pin (4) is provided with a second pin inserting piece (41) and a second pin positioning piece (44), the other side of the second pin (4) is provided with a second pin inserting hole (42), the middle part of the second pin (4) is provided with a second pin contact end (43), the second pin inserting hole (42) is matched with the second through hole (22), and the second pin contact end (43) is in electric contact with the first PTC chip (6).

6. A multi-terminal PTC starter suitable for a small installation space comprises a starter body, a zero line terminal (A), a fire line terminal (B) and a grounding terminal (C), wherein the starter body comprises a base (1) and an apron (2), the apron (2) is installed on the base (1), the base (1) is provided with a zero line terminal installation groove (11), a fire line terminal installation groove (12), a grounding terminal installation groove (13) and a thermal protector installation cavity (14), the apron (2) is provided with a first through hole (21) and a second through hole (22), the zero line terminal (A), the fire line terminal (B) and the grounding terminal (C) are respectively arranged in the zero line terminal installation groove (11), the fire line terminal installation groove (12) and the grounding terminal installation groove (13),

the method is characterized in that: the starter body further comprises a first pin (3), a second pin (4), a wedge (5), a first PTC chip (6), a second PTC chip (7), a first reed (8), a second reed (9) and a silicon controlled rectifier (10) which are installed in a cavity formed by the base (1) and the cover plate (2), the end portion of the first pin (3) and the end portion of the second pin (4) are exposed out of the base (1), an avoiding position (15) is arranged on the base (1), the zero line terminal (A) is electrically connected with the first pin (3), the first pin (3) is electrically contacted with the wedge (5), the first PTC chip (6) and the second PTC chip (7) respectively, the first PTC chip (6) is contacted with the first reed (8), the second PTC chip (7) is contacted with the second reed (9), and the second pin (4), the first reed (8) and the second reed (9) are electrically connected with the silicon controlled rectifier (10).

7. The multi-terminal PTC starter adapted for a small installation space according to claim 6, wherein: zero line terminal (A) includes zero line terminal body (A1), one side of zero line terminal body (A1) is provided with zero line terminal connecting piece, the opposite side of zero line terminal body (A1) is provided with zero line terminal setting element, the middle part of zero line terminal body (A1) is provided with the protruding fat (A2) of welding.

8. The multi-terminal PTC starter adapted for a small installation space according to claim 6, wherein: fire wire terminal (B) includes fire wire terminal body (B1), one side of fire wire terminal body (B1) is provided with fire wire terminal connecting piece, the opposite side of fire wire terminal body (B1) is provided with fire wire terminal setting element.

9. The multi-terminal PTC starter adapted for a small installation space according to claim 6, wherein: the grounding terminal (C) comprises a grounding terminal body (C1), a grounding terminal connecting piece is arranged on one side of the grounding terminal body (C1), and a grounding terminal positioning piece is arranged on the other side of the grounding terminal body (C1).

10. The multi-terminal PTC starter adapted for a small installation space according to claim 6, wherein: a first pin welding sheet (31) and a first pin inserting sheet (32) are arranged on one side of the first pin (3), a first pin inserting hole (33) is formed in the other side of the first pin (3), a first pin first contact end (34) and a first pin second contact end (35) are arranged in the middle of the first pin (3), the first pin welding sheet (31) is electrically connected with a neutral terminal (A), the first pin inserting hole (33) is matched with the first through hole (21), the first pin first contact end (34) is electrically connected with the first PTC chip (6), and the first pin second contact end (35) is electrically connected with the second PTC chip (7);

a second pin inserting sheet (41) is arranged on one side of the second pin (4), a second pin inserting hole (42) is formed in the other side of the second pin (4), a second pin U-shaped groove (45) is formed in the middle of the second pin (4), and the second pin inserting hole (42) is matched with the second through hole (22);

the first reed (8) is provided with a first reed contact end (81) and a first reed U-shaped groove (82), and the first reed contact end (81) is electrically contacted with the first PTC chip (6);

a second reed contact end (91) and a second reed U-shaped groove (92) are arranged on the second reed (9), and the second reed contact end (91) is electrically contacted with the second PTC chip (7);

the controllable silicon (10) is provided with a first pole (101), a second pole (102) and a trigger pole (103),

the first pole (101), the second pole (102) and the trigger pole (103) are electrically connected with the second pin U-shaped groove (45), the first reed U-shaped groove (82) and the second reed U-shaped groove (92) respectively.

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