PTC chip assembly assembly equipment and method for pin-type start thermal protector

Abstract

The present invention relates to a PTC chip assembly assembly device and method for a pin-plug starting thermal protector, belonging to the field of starting thermal protectors. The present invention comprises a thermal protector, a cover plate, a first pin, a connecting insert, a duplex insert, a second pin, a bidirectional thyristor (TRIAC), a third reed, a second thermistor (TCR), a fourth reed, a base, and a PTC chip assembly. The PTC chip assembly comprises the second pin, the first pin, the first thermistor (TCR), a first reed, and a second reed. The thermal protector is mounted on the base, the first pin is connected to the connecting insert, the second pin is connected to the first pin, the first pin is connected to the duplex insert, the second reed, the second pin, the third reed, and the fourth reed are all connected to the bidirectional thyristor, the third reed and the fourth reed are respectively connected to the two poles of the second thermistor, and the first pin, the first reed, and the second reed are respectively connected to the two poles of the first thermistor.

Description

Technical Field

[0001] The present invention relates to a PTC chip assembly assembly device and method for a pin-insert starting thermal protector, belonging to the field of starting thermal protectors, and is mainly suitable for starting and protecting refrigeration compressor motors such as refrigerators and freezers or general single-phase AC motors. Background Art

[0002] Most refrigeration compressors use split-phase, single-phase asynchronous motors with two sets of windings on the stator core: the main winding and the auxiliary winding. When energized, the primary and secondary magnetic fields generated by the primary and secondary windings form a rotating magnetic field due to a phase difference. This rotating magnetic field cuts through the stationary rotor, generating electromagnetic torque and causing the rotor to begin rotating. After startup, the rotor torque gradually increases. When the speed reaches 75%-80% of the synchronous speed, the auxiliary winding circuit is disconnected. At this point, the motor continues to accelerate under the action of the main magnetic field until it reaches equilibrium with the external impedance and operates stably. The starter is often used in conjunction with a thermal protector. By installing a thermal protector on the starter base, the compressor can be protected from overcurrent and overtemperature. The main function of the starter is to use a thermistor, namely a PTC chip, to complete the starting process. A PTC starter is connected in series in the secondary winding circuit of the refrigeration compressor motor. It is in a low-resistance conduction state at room temperature. During starting, the PTC chip component heats up rapidly due to the action of the current. When the Curie temperature is reached, its resistance value increases rapidly to more than tens of kilo-ohms, and the current in the secondary winding circuit drops below more than ten milliamperes, maintaining a power consumption of about 3W, which is close to the short-circuit state. The motor starting process is completed and enters normal operation; the thermal protector mainly protects the motor from overcurrent and overtemperature.

[0003] Current PTC chip components are made from rare earth metals and coated with silver to ensure good conductivity. When assembling a PTC starter, the reeds and other components are placed one by one into the base before the PTC chip is placed between the two reeds. This assembly method can easily damage the silver coating of the PTC chip, causing poor contact. When current flows through it, sparks can occur, shattering the PTC chip. The currently published application number CN202223338495.8 is a low-power starter with a pin-insertion device. Its PTC chip installation method uses a baffle to apply pressure to prevent scratches on the silver surface of both sides of the PTC chip and prevent short circuits. However, if the PTC chip component is damaged due to other reasons and is not in the center position, there is still a risk of short circuit. At the same time, in the low-power starter of the above-mentioned prior art, since the first thermistor and the second thermistor are connected in parallel, the PTC chip assembly needs to occupy a large space and the first thermistor is located on the side of the base instead of in the middle. When the starting thermal protector is affected by external force, it is easy to cause the first thermistor to be damaged, affecting its service life; the published application number CN202121830501.4 three-point contact PTC starter uses a three-point contact PTC chip component to have a better anti-short circuit function, but the above-mentioned problem of damaging the silver surface of the PTC chip component occurs when the PTC chip component is installed. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a PTC chip assembly assembly device and method for a pin-plug type start thermal protector with a rational structural design.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is as follows: the pin-type starting thermal protector includes a thermal protector, a cover plate, a first pin, a connecting plug, a double plug, a second pin, a bidirectional thyristor, a third reed, a second thermistor, a fourth reed, a base and a PTC chip assembly. The PTC chip assembly includes the second pin, the first pin, the first thermistor, the first reed and the second reed. The thermal protector is installed on the base. Its structural characteristics are: the first pin is connected to the connecting plug, the second pin is connected to the first pin, the first pin is connected to the double plug, the second reed, the second pin, the third reed and the fourth reed are all connected to the bidirectional thyristor, the third reed and the fourth reed are respectively connected to the two poles of the second thermistor, the first pin and the first reed, and the second reed are respectively connected to the two poles of the first thermistor, and the double plug and the connecting plug are independently arranged and have no connection relationship.

[0006] Furthermore, the first thermistor, the second reed, the bidirectional thyristor, the fourth reed, and the second thermistor are connected in series.

[0007] Furthermore, the PTC chip assembly further includes an electrical connector, the first pin is connected to the electrical connector, and the electrical connector is connected to the first thermistor.

[0008] Furthermore, the first pin, connecting plug, second pin, first pin, double plug, first thermistor, first reed, second reed, second pin, bidirectional thyristor, third reed, second thermistor and fourth reed are all installed in the cavity formed by the cover and the base.

[0009] Furthermore, the electrical connector is installed in a cavity formed by the cover plate and the base.

[0010] Furthermore, a PTC chip assembly installation cavity is provided in the middle of the base, and the PTC chip assembly is installed in the PTC chip assembly installation cavity.

[0011] Furthermore, another technical purpose of the present invention is to provide a PTC chip assembly assembly device for assembling a PTC chip assembly.

[0012] The above technical objectives of the present invention are achieved through the following technical solutions.

[0013] A PTC chip assembly assembly device for assembling PTC chip assemblies has the following structural features: the PTC chip assembly device includes a pressing mechanism, a first placing mechanism and a second placing mechanism, the pressing mechanism is located above the first placing mechanism and the second placing mechanism, and when the first placing mechanism and the second placing mechanism are closed, the pressing mechanism cooperates with the first placing mechanism and the second placing mechanism.

[0014] Furthermore, the pressing mechanism includes a cylinder 1 and a rubber pad, the piston rod of the cylinder 1 is connected to the rubber pad, and a No. 1 sensor and a No. 2 sensor are installed on the cylinder barrel of the cylinder 1.

[0015] Furthermore, the first placement mechanism includes a second cylinder, a slide, a first guide column, a spring, a first guide block, a first base seat cavity, a first pin placement cavity, a first pin limiting column and a first thermistor placement cavity. The piston rod of the second cylinder is connected to the slide. Sensor No. 3 and sensor No. 4 are installed on the cylinder barrel of the second cylinder. The first guide column is installed on the slide. The first guide block is installed on the first guide column. The first spring is sleeved outside the first guide column, and the two ends of the first spring are respectively in contact with the slide and the guide block. The first guide block is provided with a first base seat cavity, a first pin placement cavity and a first thermistor placement cavity. One end of the first pin limiting column is fixed on the slide, and the other end of the first pin limiting column is located in the first pin placement cavity.

[0016] Furthermore, the second placement mechanism includes a base plate, a rail, a second guide column, a second spring, a second guide block, a second base cavity, a first reed placement cavity, a second reed placement cavity, a second first thermistor placement cavity, a first thermistor limiting column, a second reed limiting column and a first reed limiting column. The first placement mechanism is mounted on the base plate through the rail, the second guide column is mounted on the base plate, the second guide block is mounted on the second guide column, the second spring is sleeved outside the second guide column, and the two ends of the second spring are respectively abutted against the base plate and the second guide block, the second guide block is provided with a second base cavity, a first reed placement cavity, a second reed placement cavity and a second first thermistor placement cavity, one end of the first thermistor limiting column, the second reed limiting column and the first reed limiting column are all fixed on the base plate, and the other ends of the first thermistor limiting column, the second reed limiting column and the first reed limiting column are respectively located in the second thermistor placement cavity, the second reed placement cavity and the first reed placement cavity.

[0017] Furthermore, another technical purpose of the present invention is to provide an assembling method of a PTC chip assembly assembly device for assembling a PTC chip assembly.

[0018] The above technical objectives of the present invention are achieved through the following technical solutions.

[0019] An assembly method for PTC chip assembly equipment is characterized in that: the assembly method is as follows:

[0020] S1. Place the first reed, second reed, first thermistor, and first pin in the first reed placement cavity, second reed placement cavity, first thermistor placement cavity II, and first pin placement cavity, respectively. Cylinder 2 pushes the slide to the position where guide block 1 and guide block 2 are closed. The control system receives the delivery in place signal from sensor No. 3 and proceeds to the next action control.

[0021] S2. Place the base in base cavity 1 and base cavity 2. The control system controls cylinder 1 to push the rubber pad onto the base, driving guide block 1 and guide block 2 to descend. The control system receives the delivery in place signal from sensor 1 and then performs the next action control.

[0022] S3. After the control system receives the delivery arrival signals from the second sensor and the fourth sensor in sequence, the assembly cycle of one PTC chip component ends.

[0023] Furthermore, in S1, the electrical connector is placed in the electrical connector placement cavity.

[0024] Compared to existing technologies, the present invention offers the following advantages: The pin-type starter thermal protector utilizes a three-point short-circuit-proof contact PTC chip element. When the PTC starter fails and the first thermistor ruptures, the first reed contact, under the action of elastic force, pushes the ruptured first thermistor apart, ensuring that no current flows between the first pin contact, the second reed contact, and the first thermistor, effectively severing the power circuit and providing greater safety and reliability. During installation, the first thermistor, along with the first pin, the first reed, and the second reed, are assembled and installed into the base using PTC chip assembly equipment. This prevents damage to the silver coating of the first thermistor, ensuring good contact and conductivity, and extending its service life.

[0025] That is, the three-point short-circuit protection structure is combined with a one-time assembly method to solve the problems of short circuit and PTC chip component damage in the prior art. At the same time, the first thermistor and the second thermistor are arranged in series to reduce internal space, reduce costs, improve production efficiency, and even improve product quality and service life. Since the first thermistor and the second thermistor are connected in series, the first thermistor can be placed in the middle of the base, thereby preventing the first thermistor from being damaged by external impact or falling when the thermal protector is started. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the explosion structure of the pin-plug type starting thermal protector of Example 1 of the present invention.

[0027] Figure 2 Schematic diagram of the internal structure of the pin-plug starting thermal protector of Example 1 of the present invention.

[0028] Figure 3 It is a schematic diagram of one direction of the three-dimensional structure of the pin-plug type starting thermal protector of embodiments 1 and 2 of the present invention.

[0029] Figure 4 It is a schematic diagram of another direction of the three-dimensional structure of the pin-plug type starting thermal protector of Examples 1 and 2 of the present invention.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the pin-plug starting thermal protector (without the cover plate) of Example 1 of the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the base of Example 1 of the present invention.

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the base of Examples 1 and 2 of the present invention.

[0033] Figure 8It is a schematic diagram of the three-dimensional structure of the cover plate of Examples 1 and 2 of the present invention.

[0034] Figure 9 It is a schematic diagram of the three-dimensional structure of the first pin and the connecting plug in embodiments 1 and 2 of the present invention.

[0035] Figure 10 It is a schematic diagram of the three-dimensional structure of the second pin and the first pin of Example 1 of the present invention.

[0036] Figure 11 It is a schematic diagram of the three-dimensional structure of the double plug-in sheets of Examples 1 and 2 of the present invention.

[0037] Figure 12 It is a schematic diagram of the three-dimensional structure of the first reed in Examples 1 and 2 of the present invention.

[0038] Figure 13 It is a schematic diagram of the three-dimensional structure of the second reed in Examples 1 and 2 of the present invention.

[0039] Figure 14 It is a schematic diagram of the three-dimensional structure of the second pin of embodiments 1 and 2 of the present invention.

[0040] Figure 15 It is a schematic diagram of the three-dimensional structure of the bidirectional thyristor according to embodiments 1 and 2 of the present invention.

[0041] Figure 16 It is a schematic diagram of the three-dimensional structure of the third reed in Examples 1 and 2 of the present invention.

[0042] Figure 17 It is a schematic diagram of the three-dimensional structure of the fourth reed in Examples 1 and 2 of the present invention.

[0043] Figure 18 It is a schematic diagram of the explosion structure of the pin-plug type starting thermal protector of Example 2 of the present invention.

[0044] Figure 19 Schematic diagram of the internal structure of the pin-plug starting thermal protector of Example 2 of the present invention.

[0045] Figure 20 It is a schematic diagram of the three-dimensional structure of the pin-plug starting thermal protector (without the cover plate) of Example 2 of the present invention.

[0046] Figure 21 It is a schematic diagram of the three-dimensional structure of the base of Example 2 of the present invention.

[0047] Figure 22 It is a schematic diagram of the three-dimensional structure of the second pin and the first pin of Example 2 of the present invention.

[0048] Figure 23 It is a schematic diagram of the three-dimensional structure of the electrical connector according to embodiment 2 of the present invention.

[0049] Figure 24 It is a schematic diagram of the three-dimensional structure of the PTC chip component assembly equipment of Example 3 of the present invention.

[0050] Figure 25 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of Example 3 of the present invention.

[0051] Figure 26 It is a schematic diagram of the three-dimensional structure of the first placement mechanism of Example 3 of the present invention.

[0052] Figure 27 It is a schematic diagram of the three-dimensional structure of the second placement mechanism of Example 3 of the present invention.

[0053] Figure 28 It is a schematic diagram of the internal structure of the PTC chip component assembly equipment of Example 3 of the present invention.

[0054] Figure 29 It is a schematic diagram of the internal structure of the PTC chip component assembly equipment of Example 3 of the present invention.

[0055] In the figure: thermal protector 1, cover 2, first pin 3, connecting plug 4, second pin 5, first pin 6, double plug 7, first thermistor 8, first reed 9, second reed 10, second pin 11, bidirectional thyristor 12, third reed 13, second thermistor 14, fourth reed 15, base 16, electrical connection piece 17,

[0056] First jack 2-1, second jack 2-2, first hook 2-3, second hook 2-4, connecting piece limit block 2-5, first pin limit block 2-6, second pin limit block 2-7, first thermistor limit block 2-8, fourth spring limit block 2-9, second thermistor limit block 2-10, bidirectional thyristor limit block 2-11,

[0057] Bracket No. 1 4-1, Bracket No. 2 4-2, Connecting Insert Body 4-3,

[0058] First pin hole 6-1, first pin contact 6-2, output end 6-3, No. 3 bracket 6-4, No. 4 bracket 6-5,

[0059] Double plug first piece body 7-1, double plug second piece body 7-2, connecting end 7-3,

[0060] First reed contact piece 9-1,

[0061] The second reed frame 10-1, the second reed contact piece 10-2,

[0062] Second pin hole 11-1, second pin frame 11-2, second pin sheet body 11-3,

[0063] First pole 12-1, second pole 12-2, trigger pole 12-3,

[0064] The third reed frame 13-1, the third reed contact piece 13-2,

[0065] The fourth reed frame 15-1, the fourth reed contact piece 15-2,

[0066] Thermal protector mounting cavity 16-1, mounting elastic claw 16-2, first guide block 16-3, second guide block 16-4, first guide surface 16-5, second guide surface 16-6, third guide surface 16-7, fourth guide surface 16-8, first clamping hole 16-9, second clamping hole 16-10, anti-foolproof socket 16-11, anti-pull-off claw 16-12, second pin mounting cavity 16-13, second spring mounting cavity 16-14 , bidirectional thyristor installation cavity 16-15, first spring installation cavity 16-16, third spring installation cavity 16-17, second thermistor installation cavity 16-18, fourth spring installation cavity 16-19, second pin installation cavity 16-20, first pin installation cavity 16-21, connecting piece installation cavity 16-22, first pin installation cavity 16-23, first thermistor installation cavity 16-24, electrical connection piece installation cavity 16-25,

[0067] Electrical connection piece contact piece 1 17-1, electrical connection piece contact piece 2 17-2,

[0068] Pressing mechanism A, first placing mechanism B, second placing mechanism C,

[0069] Cylinder A1, rubber pad A2,

[0070] Cylinder 2 B1, slide plate B2, guide column 1 B3, spring 1 B4, guide block 1 B5, base cavity 1 B6, first pin placement cavity B7, first pin limit column B8, first thermistor placement cavity 1 B9,

[0071] Bottom plate C1, rail C2, guide column 2 C3, spring 2 C4, guide block 2 C5, base seat cavity 2 C6, first reed placement cavity C7, second reed placement cavity C8, first thermistor placement cavity 2 C9, first thermistor limiting column C10, second reed limiting column C11, first reed limiting column C12,

[0072] Sensor No. 1 SQ1, sensor No. 2 SQ2, sensor No. 3 SQ3, sensor No. 4 SQ4. DETAILED DESCRIPTION

[0073] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0074] Example 1 (as Figures 1-17 As shown), the pin-plug starting thermal protector in this embodiment includes a thermal protector 1, a cover plate 2, a first pin 3, a connecting plug 4, a double plug 7, a second pin 11, a bidirectional thyristor 12, a third reed 13, a second thermistor 14, a fourth reed 15, a base 16 and a PTC chip assembly. The PTC chip assembly includes a second pin 5, a first pin 6, a first thermistor 8, a first reed 9 and a second reed 10. The thermal protector 1 is mounted on the base 16.

[0075] In this embodiment, the first pin 3 is connected to the connecting blade 4, the second pin 5 is connected to the first pin 6, the first pin 6 is connected to the double blade 7, the second reed 10, the second pin 11, the third reed 13 and the fourth reed 15 are all connected to the bidirectional thyristor 12, the third reed 13 and the fourth reed 15 are respectively connected to the two poles of the second thermistor 14, the first pin 6 and the first reed 9 and the second reed 10 are respectively connected to the two poles of the first thermistor 8, the double blade 7 and the connecting blade 4 are independently arranged and have no connection relationship, and the first thermistor 8, the second reed 10, the bidirectional thyristor 12, the fourth reed 15 and the second thermistor 14 are connected in series.

[0076] In this embodiment, the first pin 3, the connecting blade 4, the second pin 5, the first pin 6, the double blade 7, the first thermistor 8, the first spring 9, the second spring 10, the second pin 11, the bidirectional thyristor 12, the third spring 13, the second thermistor 14 and the fourth spring 15 are all installed in the cavity formed by the cover plate 2 and the base 16. A PTC chip assembly mounting cavity is provided in the middle of the base 16, and the PTC chip assembly is mounted in the PTC chip assembly mounting cavity.

[0077] The base 16 is provided with a thermal protector mounting cavity 16-1, an elastic mounting claw 16-2, a first clamping hole 16-9, a second clamping hole 16-10 and an anti-foolproof socket 16-11. The elastic mounting claw 16-2 is located in the thermal protector mounting cavity 16-1. The inner walls on both sides of the thermal protector mounting cavity 16-1 are respectively provided with a first guide block 16-3 and a second guide block 16-4. The first guide block 16-3 is provided with a first guide surface 16-5 and a second guide surface 16-6. The second guide block 16-4 is provided with a third guide surface 16-7 and a fourth guide surface 16-8. The anti-foolproof socket 16-11 is provided with an anti-pull-off claw 16-12.

[0078] The base 16 is internally provided with a second pin mounting cavity 16-13, a second reed mounting cavity 16-14, a bidirectional thyristor mounting cavity 16-15, a first reed mounting cavity 16-16, a third reed mounting cavity 16-17, a second thermistor mounting cavity 16-18, a fourth reed mounting cavity 16-19, a second pin mounting cavity 16-20, a first pin mounting cavity 16-21, a connecting plug mounting cavity 16-22, a first pin mounting cavity 16-23 and a first thermistor mounting cavity 16-24. The second reed mounting cavity 16-14 and the bidirectional thyristor mounting cavity 16-15 are connected, and the second reed mounting cavity 16-14 is located on one side of the bidirectional thyristor mounting cavity 16-15. The third reed mounting cavity 16-17 and the second thermistor mounting cavity 16-18 and the fourth reed mounting cavity 16-19 are connected, and the second thermistor mounting cavity 16-18 is located in the middle of the third reed mounting cavity 16-17 and the fourth reed mounting cavity 16-19, the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23 are connected, the first pin mounting cavity 16-21 and the connecting plug mounting cavity 16-22 are connected, the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23 are independently arranged, and the first thermistor mounting cavity 16-24 is located on the right side of the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23, and on the left side of the second reed mounting cavity 16-14 and the first reed mounting cavity 16-16.

[0079] The cover plate 2 is provided with a first jack 2-1, a second jack 2-2, a first hook 2-3, a second hook 2-4, a connecting piece limit block 2-5, a first pin limit block 2-6, a second pin limit block 2-7, a first thermistor limit block 2-8, a fourth spring limit block 2-9, a second thermistor limit block 2-10 and a bidirectional thyristor limit block 2-11. The first jack 2-1 and the second jack 2-2 are respectively provided corresponding to the second pin hole 11-1 and the first pin hole 6-1. The first hook 2-3 The second hook 2-4 is respectively engaged with the second card hole 16-10 and the first card hole 16-9, and the connecting piece limit block 2-5, the first pin limit block 2-6, the second pin limit block 2-7, the first thermistor limit block 2-8, the fourth spring limit block 2-9, the second thermistor limit block 2-10 and the bidirectional thyristor limit block 2-11 respectively limit and fix the connecting piece 4, the first pin 3, the second pin 5, the first thermistor 8, the fourth spring 15, the second thermistor 14 and the bidirectional thyristor 12.

[0080] The second pin 11 is provided with a second pin hole 11 - 1 , a second pin frame 11 - 2 and a second pin sheet body 11 - 3 . The second pin frame 11 - 2 is connected to the bidirectional thyristor 12 .

[0081] A second reed frame 10 - 1 and a second reed contact 10 - 2 are provided on the second reed 10 . The second reed frame 10 - 1 is connected to the bidirectional thyristor 12 , and the second reed contact 10 - 2 is connected to one side of the first thermistor 8 .

[0082] A third reed frame 13 - 1 and a third reed contact 13 - 2 are provided on the third reed 13 . The third reed frame 13 - 1 is connected to the bidirectional thyristor 12 , and the third reed contact 13 - 2 is connected to one side of the second thermistor 14 .

[0083] A fourth reed frame 15 - 1 and a fourth reed contact 15 - 2 are provided on the fourth reed 15 . The fourth reed frame 15 - 1 is connected to the bidirectional thyristor 12 , and the fourth reed contact 15 - 2 is connected to the other side of the second thermistor 14 .

[0084] A first reed contact 9 - 1 is provided on the first reed 9 , and the first reed contact 9 - 1 is connected to one side of the first thermistor 8 .

[0085] The bidirectional thyristor 12 is provided with a first electrode 12-1, a second electrode 12-2 and a trigger electrode 12-3, which are respectively connected to the second pin 11, the third reed 13, the second reed 10 and the fourth reed 15.

[0086] The double plug 7 is provided with a double plug first body 7 - 1 , a double plug second body 7 - 2 and a connection end 7 - 3 , and the connection end 7 - 3 is connected to the first pin 6 .

[0087] The first pin 6 is provided with a first pin hole 6-1, a first pin contact 6-2, an output end 6-3, a third bracket 6-4 and a fourth bracket 6-5. The first pin contact 6-2 is connected to the other side of the first thermistor 8, the output end 6-3 is connected to the double pin 7, and the third bracket 6-4 and the fourth bracket 6-5 are connected to the second pin 5.

[0088] The connecting plug 4 is provided with a first bracket 4 - 1 , a second bracket 4 - 2 and a connecting plug body 4 - 3 . The first bracket 4 - 1 and the second bracket 4 - 2 are connected to the first pin 3 .

[0089] Example 2 (as Figure 3-Figure 4 、 Figure 7-Figure 8 、 Figure 11-Figure 23As shown), the pin-plug starting thermal protector in this embodiment includes a thermal protector 1, a cover plate 2, a first pin 3, a connecting plug 4, a double plug 7, a second pin 11, a bidirectional thyristor 12, a third reed 13, a second thermistor 14, a fourth reed 15, a base 16 and a PTC chip assembly. The PTC chip assembly includes a second pin 5, a first pin 6, a first thermistor 8, a first reed 9, a second reed 10 and an electrical connector 17. The thermal protector 1 is mounted on the base 16.

[0090] In this embodiment, the first pin 3 is connected to the connecting blade 4, the second pin 5 is connected to the first pin 6, the first pin 6 is connected to the double blade 7 and the electrical connector 17, the second reed 10, the second pin 11, the third reed 13 and the fourth reed 15 are all connected to the bidirectional thyristor 12, the third reed 13 and the fourth reed 15 are respectively connected to the two poles of the second thermistor 14, the electrical connector 17 and the first reed 9 and the second reed 10 are respectively connected to the two poles of the first thermistor 8, the double blade 7 and the connecting blade 4 are independently provided and have no connection relationship, and the first thermistor 8, the second reed 10, the bidirectional thyristor 12, the fourth reed 15, and the second thermistor 14 are connected in series.

[0091] In this embodiment, the first pin 3, the connecting blade 4, the second pin 5, the first pin 6, the double blade 7, the first thermistor 8, the first spring 9, the second spring 10, the second pin 11, the bidirectional thyristor 12, the third spring 13, the second thermistor 14, the fourth spring 15 and the electrical connection piece 17 are all installed in the cavity formed by the cover plate 2 and the base 16. The middle part of the base 16 is provided with a PTC chip assembly installation cavity, and the PTC chip assembly is installed in the PTC chip assembly installation cavity.

[0092] The base 16 is provided with a thermal protector mounting cavity 16-1, an elastic mounting claw 16-2, a first clamping hole 16-9, a second clamping hole 16-10 and an anti-foolproof socket 16-11. The elastic mounting claw 16-2 is located in the thermal protector mounting cavity 16-1. The inner walls on both sides of the thermal protector mounting cavity 16-1 are respectively provided with a first guide block 16-3 and a second guide block 16-4. The first guide block 16-3 is provided with a first guide surface 16-5 and a second guide surface 16-6. The second guide block 16-4 is provided with a third guide surface 16-7 and a fourth guide surface 16-8. The anti-foolproof socket 16-11 is provided with an anti-pull-off claw 16-12.

[0093] The base 16 is internally provided with a second pin mounting cavity 16-13, a second reed mounting cavity 16-14, a bidirectional thyristor mounting cavity 16-15, a first reed mounting cavity 16-16, a third reed mounting cavity 16-17, a second thermistor mounting cavity 16-18, a fourth reed mounting cavity 16-19, a second pin mounting cavity 16-20, a first pin mounting cavity 16-21, a connecting piece mounting cavity 16-22, a first pin mounting cavity 16-23, a first thermistor mounting cavity 16-24 and an electrical connection piece mounting cavity 16-25. The second reed mounting cavity 16-14 and the bidirectional thyristor mounting cavity 16-15 are connected, and the second reed mounting cavity 16-14 is located on one side of the bidirectional thyristor mounting cavity 16-15. The third reed mounting cavity 16-17, the second thermistor mounting cavity 16-18 and the fourth The reed mounting cavity 16-19 is connected, and the second thermistor mounting cavity 16-18 is located in the middle of the third reed mounting cavity 16-17 and the fourth reed mounting cavity 16-19, the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23 are connected, the first pin mounting cavity 16-23 and the electrical connector mounting cavity 16-25 are connected, the first pin mounting cavity 16-21 and the connecting piece mounting cavity 16-22 are connected, the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23 are independently arranged, and the first thermistor mounting cavity 16-24 is located on the right side of the second pin mounting cavity 16-20 and the first pin mounting cavity 16-23, and on the left side of the second reed mounting cavity 16-14 and the first reed mounting cavity 16-16.

[0094] The cover plate 2 is provided with a first jack 2-1, a second jack 2-2, a first hook 2-3, a second hook 2-4, a connecting piece limit block 2-5, a first pin limit block 2-6, a second pin limit block 2-7, a first thermistor limit block 2-8, a fourth spring limit block 2-9, a second thermistor limit block 2-10 and a bidirectional thyristor limit block 2-11. The first jack 2-1 and the second jack 2-2 are respectively provided corresponding to the second pin hole 11-1 and the first pin hole 6-1. The first hook 2-3 The second hook 2-4 is respectively engaged with the second card hole 16-10 and the first card hole 16-9, and the connecting piece limit block 2-5, the first pin limit block 2-6, the second pin limit block 2-7, the first thermistor limit block 2-8, the fourth spring limit block 2-9, the second thermistor limit block 2-10 and the bidirectional thyristor limit block 2-11 respectively limit and fix the connecting piece 4, the first pin 3, the second pin 5, the first thermistor 8, the fourth spring 15, the second thermistor 14 and the bidirectional thyristor 12.

[0095] The second pin 11 is provided with a second pin hole 11 - 1 , a second pin frame 11 - 2 and a second pin sheet body 11 - 3 . The second pin frame 11 - 2 is connected to the bidirectional thyristor 12 .

[0096] A second reed frame 10 - 1 and a second reed contact 10 - 2 are provided on the second reed 10 . The second reed frame 10 - 1 is connected to the bidirectional thyristor 12 , and the second reed contact 10 - 2 is connected to one side of the first thermistor 8 .

[0097] A third reed frame 13 - 1 and a third reed contact 13 - 2 are provided on the third reed 13 . The third reed frame 13 - 1 is connected to the bidirectional thyristor 12 , and the third reed contact 13 - 2 is connected to one side of the second thermistor 14 .

[0098] A fourth reed frame 15 - 1 and a fourth reed contact 15 - 2 are provided on the fourth reed 15 . The fourth reed frame 15 - 1 is connected to the bidirectional thyristor 12 , and the fourth reed contact 15 - 2 is connected to the other side of the second thermistor 14 .

[0099] A first reed contact 9 - 1 is provided on the first reed 9 , and the first reed contact 9 - 1 is connected to one side of the first thermistor 8 .

[0100] The bidirectional thyristor 12 is provided with a first electrode 12-1, a second electrode 12-2 and a trigger electrode 12-3, which are respectively connected to the second pin 11, the third reed 13, the second reed 10 and the fourth reed 15.

[0101] The double plug 7 is provided with a double plug first body 7 - 1 , a double plug second body 7 - 2 and a connection end 7 - 3 , and the connection end 7 - 3 is connected to the first pin 6 .

[0102] The first pin 6 is provided with a first pin hole 6-1, an output end 6-3, a third bracket 6-4 and a fourth bracket 6-5. The output end 6-3 is connected to the double-connected plug 7, and the third bracket 6-4 and the fourth bracket 6-5 are connected to the second pin 5.

[0103] The connecting plug 4 is provided with a first bracket 4 - 1 , a second bracket 4 - 2 and a connecting plug body 4 - 3 . The first bracket 4 - 1 and the second bracket 4 - 2 are connected to the first pin 3 .

[0104] The electrical connector 17 is provided with an electrical connector contact piece 1 17 - 1 and an electrical connector contact piece 2 17 - 2 . The electrical connector contact piece 1 17 - 1 is connected to the other side of the first thermistor 8 , and the electrical connector contact piece 2 17 - 2 is connected to the first pin 6 .

[0105] Example 3 (as Figure 24-29As shown), the PTC chip component assembly equipment in this embodiment is used to assemble the PTC chip component, which includes a pressing mechanism A, a first placing mechanism B and a second placing mechanism C. The pressing mechanism A is located above the first placing mechanism B and the second placing mechanism C. When the first placing mechanism B and the second placing mechanism C are closed, the pressing mechanism A cooperates with the first placing mechanism B and the second placing mechanism C.

[0106] The pressing mechanism A in this embodiment includes a cylinder A1 and a rubber pad A2. The piston rod of the cylinder A1 is connected to the rubber pad A2. A sensor No. 1 SQ1 and a sensor No. 2 SQ2 are installed on the cylinder barrel of the cylinder A1.

[0107] The first placement mechanism B in this embodiment includes a cylinder 2 B1, a slide B2, a guide column 1 B3, a spring 1 B4, a guide block 1 B5, a base cavity 1 B6, a first pin placement cavity B7, a first pin limiting column B8 and a first thermistor placement cavity 1 B9. The piston rod of the cylinder 2 B1 is connected to the slide B2, and the cylinder barrel of the cylinder 2 B1 is equipped with a third sensor SQ3 and a fourth sensor SQ4. The guide column 1 B3 is installed on the slide B2, and the guide block 1 B5 is installed on the guide column 1 B3. The spring 1 B4 is sleeved outside the guide column 1 B3, and the two ends of the spring 1 B4 are respectively in contact with the slide B2 and the guide block 1 B5. The guide block 1 B5 is provided with a base cavity 1 B6, a first pin placement cavity B7 and a first thermistor placement cavity B9. One end of the first pin limiting column B8 is fixed on the slide B2, and the other end of the first pin limiting column B8 is located in the first pin placement cavity B7.

[0108] The second placement mechanism C in this embodiment includes a bottom plate C1, a track C2, a second guide post C3, a second spring C4, a second guide block C5, a second base cavity C6, a first spring placement cavity C7, a second spring placement cavity C8, a second first thermistor placement cavity C9, a first thermistor limiting post C10, a second spring limiting post C11 and a first spring limiting post C12. The first placement mechanism B is mounted on the bottom plate C1 through the track C2, the second guide post C3 is mounted on the bottom plate C1, the second guide block C5 is mounted on the second guide post C3, the second spring C4 is sleeved outside the second guide post C3, and the second spring C4 is The two ends are respectively in contact with the bottom plate C1 and the second guide block C5. The second guide block C5 is provided with a second base cavity C6, a first reed placement cavity C7, a second reed placement cavity C8 and a second first thermistor placement cavity C9. One ends of the first thermistor limiting column C10, the second reed limiting column C11 and the first reed limiting column C12 are all fixed on the bottom plate C1, and the other ends of the first thermistor limiting column C10, the second reed limiting column C11 and the first reed limiting column C12 are respectively located in the second first thermistor placement cavity C9, the second reed placement cavity C8 and the first reed placement cavity C7.

[0109] The assembly method of the PTC chip component assembly equipment is as follows:

[0110] S1. Place the first reed 9, second reed 10, first thermistor 8, and first pin 6 in the first reed placement cavity C7, second reed placement cavity C8, first thermistor placement cavity C9, and first pin placement cavity B7, respectively. Cylinder 2 B1 pushes slide B2 to the closed position of guide block 1 B5 and guide block 2 C5. The control system receives the delivery in place signal from sensor 3 SQ3 and proceeds to the next action control.

[0111] S2. Place the base 16 in the base cavity 1 B6 and the base cavity 2 C6. The control system controls the cylinder 1 A1 to push the rubber pad A2 onto the base 16, driving the guide block 1 B5 and the guide block 2 C5 to descend. The control system receives the delivery in place signal from the sensor SQ1 and then proceeds to the next action control.

[0112] S3. After the control system receives the delivery arrival signals from the second sensor SQ2 and the fourth sensor SQ4 in sequence, the assembly cycle of one PTC chip component ends.

[0113] When assembling the PTC chip assembly in Example 2, the differences from Example 1 are as follows:

[0114] The first placement mechanism B in the PTC chip component assembly equipment includes a cylinder B1, a slide B2, a guide column B3, a spring B4, a guide block B5, a base cavity B6, a first pin placement cavity B7, a first pin limiting column B8, an electrical connection piece limiting column (not shown in the figure), a first thermistor placement cavity B9 and an electrical connection piece placement cavity (not shown in the figure). The piston rod of the cylinder B1 is connected to the slide B2. The cylinder barrel of the cylinder B1 is equipped with a third sensor SQ3 and a fourth sensor SQ4. The guide column B3 It is installed on the skateboard B2, the guide block B5 is installed on the guide column B3, the spring B4 is sleeved outside the guide column B3, and the two ends of the spring B4 are respectively in contact with the skateboard B2 and the guide block B5. The guide block B5 is provided with a base cavity B6, a first pin placement cavity B7, a first thermistor placement cavity B9 and an electrical connection piece placement cavity. One end of the first pin limit column B8 and the electrical connection piece limit column is fixed on the skateboard B2, and the other end of the first pin limit column B8 and the electrical connection piece limit column is located in the first pin placement cavity B7.

[0115] In the assembly method S1 of the PTC chip component assembly equipment, the first reed 9, the second reed 10, the first thermistor 8, the first pin 6, and the electrical connector 17 are respectively placed in the first reed placement cavity C7, the second reed placement cavity C8, the first thermistor placement cavity C9, the first pin placement cavity B7, and the electrical connector placement cavity. The slide B2 is pushed to the closing position of the guide block 1 B5 and the guide block 2 C5 by the cylinder 2 B1. The control system performs the next action control after receiving the delivery in place signal from the third sensor SQ3.

[0116] Specifically, the installation and connection relationship of the pin-type starting thermal protector is as follows (illustrated using Example 1): Before installation, pre-solder the first pin 6 and the second pin 5, and pre-solder the connecting piece 4 and the first pin 3; first, assemble the first pin 6, the second pin 5, the first reed 9, the second reed 10, the first thermistor 8 and the base 16 using a PTC chip assembly assembly device, and complete the one-time assembly of the first pin 6, the second pin 5, the first reed 9, the second reed 10, and the first thermistor 8. , respectively installed in the first pin installation cavity 16-23, the second pin installation cavity 16-20, the first spring installation cavity 16-16, the second spring installation cavity 16-14, and the first thermistor installation cavity 16-24 corresponding to the base 16; then install the connecting piece 4, the first pin 3, the second pin 11, the bidirectional thyristor 12, the third spring 13, the second thermistor 14, and the fourth spring 15 respectively in the connecting piece installation cavity 16-22, the first pin installation cavity 16-21, the second pin installation cavity The bidirectional thyristor 12 is arranged between the second pin 11 and the second thermistor 14 in the pin mounting cavity 16-13, the bidirectional thyristor mounting cavity 16-15, the third spring mounting cavity 16-17, the second thermistor mounting cavity 16-18, and the fourth spring mounting cavity 16-19. The bidirectional thyristor 12 is arranged between the second pin 11 and the second thermistor 14. The first pole 12-1 of the bidirectional thyristor 12 is connected to the second pin bracket 11-2 of the second pin 11. The second pole 12-2 of the bidirectional thyristor 12 is connected to the second spring bracket 10-1 of the second spring 10 and the fourth spring of the fourth spring 15. The trigger electrode 12-3 of the bidirectional thyristor 12 is connected to the third reed frame 13-1 of the third reed 13; the first thermistor 8 is clamped by the elastic force of the first reed contact 9-1 of the first reed 9, and contacts the second reed contact 10-2 of the second reed 10 and the first pin contact 6-2 of the first pin 6 in a three-point support form; the third reed contact 13-2 of the third reed 13 and the fourth reed contact 15-2 of the fourth reed 15 respectively apply force to the corresponding two poles of the second thermistor 14.

[0117] When the first thermistor 8 breaks, it usually breaks in the middle of the first thermistor 8 or outward from the middle. At this time, due to the way the first reed contact 9-1 applies force to the edge of the first thermistor 8, the first thermistor 8 is staggered and separated from each other at its break, ensuring that there is no electricity between the first pin contact 6-2, the second reed contact 10-2 and the first thermistor 8, thereby achieving the purpose of cutting off the power circuit and protecting the compressor auxiliary winding; after all parts are installed, the cover plate 2 and the base 16 are snap-connected, and then the connection end 7-3 of the double plug 7 and the output end 6-3 of the first pin 6 are connected. Finally, the thermal protector 1 is installed into the thermal protector installation cavity 16-1 and snap-fitted with the installation elastic claw 16-2. At this point, the pin-plug starting thermal protector is installed.

[0118] The compressor motor circuit is connected via the first pin 6 at the compressor M end and the second pin 11 at the compressor S end. At this time, one end of the first thermistor 8 is connected to the lead-out terminal of the motor main winding, the other end of the first thermistor 8 is connected to one end of the second thermistor 14 and the second pole 12-2 of the bidirectional thyristor 12, the other end of the second thermistor 14 is connected to the trigger pole 12-3 of the bidirectional thyristor 12, the first pole 12-1 of the bidirectional thyristor 12 is connected to the lead-out terminal of the motor secondary winding, the bidirectional thyristor 12 is in the off state, and the first thermistor 8 is in a low resistance conduction state at room temperature, and its resistance is generally between 3.9 and 100Ω. The second thermistor 14 is also in a normal temperature conduction state, and its resistance is generally around 600 to 1800Ω. At the beginning of the compressor motor startup, since the bidirectional thyristor 12 is in the off state, the current passing through the second thermistor 14 is sufficient to trigger the bidirectional thyristor 12 to conduct, and the starting circuit enters the working state. A large motor auxiliary winding starting current is passed through the first thermistor 8 in the starting circuit. The first thermistor 8 quickly heats up, causing its resistance value to rise rapidly. When its temperature reaches the Curie temperature of the first thermistor 8, its resistance value reaches a high resistance state, thereby cutting off the compressor motor auxiliary winding and allowing the compressor motor to enter normal working state.

[0119] After the compressor enters operation, as the current through the first thermistor 8 and the second thermistor 14 gradually decreases, the bidirectional thyristor 12 is in the off state. At this time, since the power consumption of the second thermistor 14 is less than 0.5W, the power consumption of the sampling system can be as low as milliwatt level during normal operation, which is a so-called "low-power" starter.

[0120] In order to improve the working efficiency of the compressor motor, a running capacitor is connected in parallel between the first pin 6 and the second pin 11 through the double plug 7; after being inserted into the three-core terminal of the compressor, its power neutral line forms a main winding conduction circuit through the first pin 6. When the thermal protector 1 is inserted into the C end of the compressor, its connection terminal is connected to the live wire of the power line, so that the thermal protector 1 is connected in series in the compressor motor circuit. When the grid voltage is too high or too low or the refrigeration system fails, the thermal protector is activated, thereby cutting off the power supply to protect the compressor motor.

[0121] The pin insertion device is composed of the first pin installation cavity 16-21, the second pin installation cavity 16-20, the connecting plug installation cavity 16-22, the anti-foolproof socket 16-11 and the anti-pull-off claw 16-12, wherein the first pin installation cavity 16-21 and the second pin installation cavity 16-20 are arranged in the anti-foolproof socket 16-11, after the first pin 6 is installed in the first pin installation cavity 16-23, the second pin 5 extends outward through the second pin installation cavity 16-20, and the first pin 3 extends outward through the first pin installation cavity 16-21. Figure 3 As shown, the first pin 3 and the second pin 5 are arranged on the only fool-proof socket 16-11 of the base 16. The fool-proof socket 16-11 is asymmetrical with respect to its center line in the up and down directions. The first pin 3 is electrically connected to the connecting plug 4, and the second pin 5 is electrically connected to the first pin 6. The external power connector is fixed with the fool-proof socket 16-11, and the N end and the L end of the external power connector are electrically connected with the first pin 3 and the second pin 5 respectively.

[0122] When the external power connector is inserted into the foolproof socket 16-11 and is in place, the electrical connection between the N end and the L end of the external power connector and the second pin 5 and the first pin 3 respectively can be completed at one time, and it has the foolproof function of preventing the lines from being connected incorrectly. The external power connector cannot be inserted into the foolproof socket 16-11 in reverse; an anti-pull-off claw 16-12 is provided on the side of the foolproof socket 16-11, and the anti-pull-off claw 16-12 is engaged with the claw of the external power connector, so that the pin-plug starting thermal protector has the claw anti-pull-off function.

[0123] See also Figure 4A thermal protector mounting cavity 16-1 is provided on the base 16, and an elastic mounting claw 16-2 is provided in the thermal protector mounting cavity 16-1. During installation, the thermal protector 1 can be directly inserted into the thermal protector mounting cavity 16-1, and the thermal protector 1 is locked by installing the elastic claw 16-2. A first guide block 16-3 and a second guide block 16-4 are respectively provided on both sides of the thermal protector mounting cavity 16-1, which can play a guiding role when installing the thermal protector 1. A first guide surface 16-5 and a second guide surface 16-6 are provided on the first guide block 16-3, and a third guide surface 16-7 and a fourth guide surface 16-8 are provided on the second guide block 16-4, which can make the cooperation with the thermal protector 1 more firm.

[0124] The first thermistor 8 in Example 2 is clamped with the first pin 6, the electrical connector 17, the first spring 9, and the second spring 10 in a manner such that the force balance of the first thermistor 8 can be maintained under three-point clamping by the first spring contact 9-1, the second spring contact 10-2, and the electrical connector contact 17-1.

[0125] The first pin 6, second pin 5, electrical connector 17, first thermistor 8, first reed 9, and second reed 10 in Example 2 are assembled and combined in one go through PTC chip component assembly equipment, and are respectively installed into the first pin mounting cavity 16-23, second pin mounting cavity 16-20, electrical connector mounting cavity 16-25, first thermistor mounting cavity 16-24, first reed mounting cavity 16-16, and second reed mounting cavity 16-14 corresponding to the base 16. Then, the other components are installed and assembled one by one. Finally, the thermal protector 1 is installed into the thermal protector mounting cavity 16-1 and docked with the mounting elastic claw 16-2. At this point, the pin-plug starting thermal protector is installed.

Claims

1. A PTC chip assembly assembly device for a pin-plug type starting thermal protector, the pin-plug type starting thermal protector comprising a thermal protector (1), a cover plate (2), a first pin (3), a connecting plug (4), a double plug (7), a second pin (11), a bidirectional thyristor (12), a third reed (13), a second thermistor (14), a fourth reed (15), a base (16) and a PTC chip assembly, the PTC chip assembly comprising a second pin (5), a first pin (6), a first thermistor (8), a first reed (9) and a second reed (10), the thermal protector (1) being mounted on the base (16), characterized in that: The first pin (3) is connected to the connecting plug (4), the second pin (5) is connected to the first pin (6), the first pin (6) is connected to the double plug (7), the second reed (10), the second pin (11), the third reed (13) and the fourth reed (15) are all connected to the bidirectional thyristor (12), the third reed (13) and the fourth reed (15) are respectively connected to the two poles of the second thermistor (14), the first pin (6) and the first reed (9) and the second reed (10) are respectively connected to the two poles of the first thermistor (8), the first thermistor (8), the second reed (10), the bidirectional thyristor (12), the fourth reed (15) and the second thermistor (14) are connected in series, and a PTC chip assembly mounting cavity is provided in the middle of the base (16), and the PTC chip assembly is mounted in the PTC chip assembly mounting cavity; The PTC chip assembly assembly device comprises a pressing mechanism (A), a first placing mechanism (B) and a second placing mechanism (C), wherein the pressing mechanism (A) is located above the first placing mechanism (B) and the second placing mechanism (C), and when the first placing mechanism (B) and the second placing mechanism (C) are closed, the pressing mechanism (A) cooperates with the first placing mechanism (B) and the second placing mechanism (C); The pressing mechanism (A) comprises a cylinder 1 (A1) and a rubber pad (A2), the piston rod of the cylinder 1 (A1) is connected to the rubber pad (A2), and a first sensor (SQ1) and a second sensor (SQ2) are installed on the cylinder barrel of the cylinder 1 (A1); The first placement mechanism (B) includes a second cylinder (B1), a slide (B2), a guide column (B3), a spring (B4), a guide block (B5), a base cavity (B6), a first pin placement cavity (B7), a first pin limiting column (B8) and a first thermistor placement cavity (B9). The piston rod of the second cylinder (B1) is connected to the slide (B2). A third sensor (SQ3) and a fourth sensor (SQ4) are installed on the cylinder barrel of the second cylinder (B1). The guide column (B3) is installed on the slide (B2). The guide block 1 (B5) is mounted on the guide column 1 (B3), the spring 1 (B4) is sleeved outside the guide column 1 (B3), and the two ends of the spring 1 (B4) are respectively in contact with the slide plate (B2) and the guide block 1 (B5), the guide block 1 (B5) is provided with a base seat cavity 1 (B6), a first pin placement cavity (B7) and a first thermistor placement cavity 1 (B9), one end of the first pin limiting column (B8) is fixed on the slide plate (B2), and the other end of the first pin limiting column (B8) is located in the first pin placement cavity (B7).

2. The PTC chip assembly assembly equipment for the pin-plug type start thermal protector according to claim 1, characterized in that: The PTC chip assembly further includes an electrical connector (17), the first pin (6) is connected to the electrical connector (17), and the electrical connector (17) is connected to the first thermistor (8).

3. The PTC chip assembly assembly equipment for the pin-plug type start thermal protector according to claim 1, characterized in that: The first pin (3), the connecting plug (4), the second pin (5), the first pin (6), the double plug (7), the first thermistor (8), the first reed (9), the second reed (10), the second pin (11), the bidirectional thyristor (12), the third reed (13), the second thermistor (14) and the fourth reed (15) are all installed in a cavity formed by the cover plate (2) and the base (16).

4. The PTC chip assembly assembly equipment for the pin-plug type start thermal protector according to claim 2, characterized in that: The electrical connector (17) is installed in the cavity formed by the cover plate (2) and the base (16).

5. The PTC chip assembly assembly equipment for the pin-plug type start thermal protector according to claim 1, characterized in that: The second placement mechanism (C) comprises a base plate (C1), a track (C2), a second guide column (C3), a second spring (C4), a second guide block (C5), a second base cavity (C6), a first spring placement cavity (C7), a second spring placement cavity (C8), a second first thermistor placement cavity (C9), a first thermistor limiting column (C10), a second spring limiting column (C11) and a first spring limiting column (C12); the first placement mechanism (B) is mounted on the base plate (C1) via the track (C2); the second guide column (C3) is mounted on the base plate (C1); the second guide block (C5) is mounted on the second guide column (C3); the second spring (C4) is sleeved outside the second guide column (C3); and the second spring (C5) is mounted on the second guide column (C3). The two ends of (C4) are respectively in contact with the bottom plate (C1) and the second guide block (C5); the second guide block (C5) is provided with a second base cavity (C6), a first spring placement cavity (C7), a second spring placement cavity (C8) and a second first thermistor placement cavity (C9); one end of the first thermistor limiting column (C10), the second spring limiting column (C11) and the first spring limiting column (C12) are all fixed on the bottom plate (C1); the other ends of the first thermistor limiting column (C10), the second spring limiting column (C11) and the first spring limiting column (C12) are respectively located in the second first thermistor placement cavity (C9), the second spring placement cavity (C8) and the first spring placement cavity (C7).

6. An assembly method for the PTC chip assembly assembly equipment according to claim 5, characterized in that: The assembly method is as follows, S1, placing the first reed (9), the second reed (10), the first thermistor (8) and the first pin (6) in the first reed placement cavity (C7), the second reed placement cavity (C8), the first thermistor placement cavity 2 (C9) and the first pin placement cavity (B7) respectively, and the slide plate (B2) is pushed to the closing position of the guide block 1 (B5) and the guide block 2 (C5) by the cylinder 2 (B1), and the control system receives the delivery position signal from the third sensor (SQ3) and performs the next action control; S2, the base (16) is placed in the base cavity 1 (B6) and the base cavity 2 (C6), the control system controls the cylinder 1 (A1) to push the rubber pad (A2) to the base (16) to drive the guide block 1 (B5) and the guide block 2 (C5) to descend, and the control system receives the delivery position signal from the No. 1 sensor (SQ1) to perform the next action control; S3. After the control system receives the delivery arrival signals from the second sensor (SQ2) and the fourth sensor (SQ4) in sequence, the assembly cycle of a PTC chip component ends.

7. The assembly method according to claim 6, characterized in that: In the S1, the electrical connector (17) is also placed in the electrical connector placement cavity.

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