CN215600376U - Thyristor - Google Patents

Abstract

The utility model discloses a thyristor, which comprises a pipe shell, and an anode block, a cathode block, a gate pole assembly and a chip which are arranged in the pipe shell, wherein an outward-protruding plug bush is formed on the side wall of the pipe shell, the plug bush is of an integrated closed annular structure, two A terminals are clamped in the plug bush, the two A terminals are respectively connected with the gate pole assembly and the cathode block through leads, a plug connector is inserted in the plug bush in a matching manner, two B terminals which are respectively matched with the two A terminals in an opposite insertion manner are arranged on the plug connector, and the B terminal is connected with an external wire. By optimizing and reasonably designing the structure of the thyristor, the service performance of the product can be ensured, and the product is convenient to assemble and produce.

Description

Thyristor

Technical Field

The utility model relates to a thyristor, in particular to a flat-plate thyristor.

Background

Thyristors are short for thyristors and are also called silicon controlled rectifiers; the thyristor has three poles: an anode, a cathode and a gate; the thyristor has the characteristics of a silicon rectifier device, can work under the conditions of high voltage and large current, can control the working process, and is widely applied to electronic circuits such as controllable rectification, alternating current voltage regulation, contactless electronic switches, inversion, frequency conversion and the like. When the thyristor is installed and used, a gate lead and a cathode lead are required to be led out of a shell to be connected with an external circuit, the existing thyristor mostly has the problems that the gate lead and the cathode lead are connected with an inserting piece, the inserting piece extends out and is exposed outside the shell, and a nose terminal on an external electric wire is directly inserted into the inserting piece to realize electric connection during wiring, however, the connecting structure has defects in actual use, the connecting part of an inserting nose and the inserting piece is exposed outside, the protection is lacked, adverse effects are brought, and temperature rise at the connecting part is caused if dust falls on the connecting part; in addition, the inserted sheet is exposed outside and is easy to deform due to external impact, so that the product quality is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention aims to provide a thyristor with a reasonable structure, and aims to solve the disadvantages indicated in the background art.

The technical scheme for realizing the purpose of the utility model is as follows:

the utility model provides a thyristor, includes the tube to and locate anode block, negative pole piece, gate pole subassembly and chip in the tube, the shaping has outside convex plug bush on the tube lateral wall, plug bush formula closed ring structure as an organic whole, two A terminals have been clamped to the plug bush inside, two A terminals respectively through the lead wire with gate pole subassembly and negative pole piece link to each other, it has the bayonet joint to match the interlude on the plug bush, be equipped with on the bayonet joint two respectively with two A terminal is to inserting complex B terminal, external electric wire is connected to the B terminal. The plug bush that has outside bulge on the tube side wall of above-mentioned thyristor, and plug bush formula closed loop configuration as an organic whole, the A terminal is fixed inside the plug bush, when outside bayonet joint and plug bush are pegged graft and are formed, B terminal on the bayonet joint forms with the A terminal and is pegged graft to having realized the electricity and being connected, it plays outside protective effect to alternate the cooperation through bayonet joint and plug bush, avoid the A terminal to receive external striking easily and take place the problem of warping, and possess dustproof effect, the performance of product has been improved.

In the technical scheme, the positioning clamp holes are formed in the plug bush on the side wall of the tube shell, each A terminal sequentially comprises a plug part, a positioning part and a wiring part along the axial direction, the plug part extends into the plug bush and is in butt-plug fit with the B terminal, the positioning part is in clamping fit with the positioning clamp holes, the wiring part extends into the tube shell and is connected with corresponding leads, and the positioning part and the positioning clamp holes are clamped and connected to realize the installation of the A terminal by inserting the A terminal into the positioning clamp holes when the thyristor is assembled.

In the technical scheme, the terminal A is cylindrical, the inserting part is axially slotted and divided into a plurality of relatively independent elastic inserting strips, the root part of the axial slot extends to the positioning part, and the outer wall of the positioning part is provided with a clamping groove clamped with the edge of the positioning clamping hole; adopt above-mentioned structure, make grafting portion can bear certain elastic shrinkage through the grooved setting of axial, thereby be favorable to the installation of A terminal and more smooth and easy with B terminal grafting cooperation, specifically when installation A terminal, insert the locator card hole with the A terminal from inside to outside, the locator card hole is inserted earlier to the grafting portion of A terminal promptly, grafting portion takes place elastic shrinkage earlier in the insertion process, stop inserting after the grafting portion passes the location jack completely, the border in locator card hole then forms the joint with the draw-in groove this moment, grafting portion then kick-backs and resets, the grafting process is comparatively smooth and easy. The cross section of the axial groove can be in a cross shape, a straight line shape or a herringbone shape.

In the technical scheme, the positioning clamp hole is a round hole, the clamping groove is an annular groove, and the periphery of the positioning clamp hole is matched with the annular groove in place.

In the technical scheme, the tail end of the wiring part is provided with a wire inserting hole, after the end part of a corresponding lead is inserted into the wire inserting hole, the wiring part is pressed to enable the wire inserting hole to deform so as to compress the end part of the lead, and the design is convenient for wiring; when the thyristor is assembled, the lead and the wiring part can be connected outside the tube shell, and then the A terminal is installed on the tube shell.

Among the above-mentioned technical scheme, A terminal and tube are moulded plastics as an organic whole, and through injection moulding, fixed connection is firm and save the equipment process.

In the technical scheme, the tube is of a hollow structure with two open ends, the anode block and the cathode block are respectively positioned and installed at the open ends of the tube, the chip is positioned and arranged between the anode block and the cathode block, the gate pole assembly is installed on the cathode block, the annular blocking edge is formed on the inner side of the opening in one end of the tube, the annular end plate is positioned and installed on the inner side of the opening in the other end of the tube, the anode block and the cathode block are provided with a first blocking platform which is matched with the annular blocking edge in a butt joint mode, the other blocking platform is provided with a second limiting blocking platform which is matched with the annular end plate in a butt joint mode, and the inner cavity of the tube is filled with sealant.

In the technical scheme, axial ribs distributed along the circumferential direction are formed on the inner wall of the pipe shell, and the inner side periphery of the annular end plate is abutted to the stop surface in the pipe shell 1.

In the above technical solution, the ring-shaped end plate is a transparent structure.

Among the above-mentioned technical scheme the chip periphery still overlaps and is equipped with the locating rack, the locating rack is hollow annular structure, is used for carrying out the assistance-localization real-time to the less chip of diameter size through addding the locating rack.

In the above technical scheme, the B terminal is provided with an electrical jack which is in plug fit with the plug part, and when the B terminal is in plug connection with the a terminal, the plug part on the a terminal is inserted into the electrical jack to form tight contact.

The utility model has the positive effects that: according to the thyristor, the plug bush which protrudes outwards is arranged on the side wall of the tube shell of the thyristor and is of an integrated closed annular structure, the terminal A is fixed inside the plug bush, and when the external plug connector is plugged with the plug bush, the terminal B on the plug connector and the terminal A form opposite plugging, so that electric connection is realized, an external protection effect is achieved through the insertion and matching of the plug connector and the plug bush, the problem that the terminal A is prone to deformation caused by external impact is solved, the dustproof effect is achieved, and the use performance of the thyristor is improved.

Drawings

FIG. 1 is a perspective view of a first thyristor according to the present invention;

FIG. 2 is a schematic structural diagram of the thyristor shown in FIG. 1 with the plug removed;

FIG. 3 is a top view of the thyristor shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 6 is a schematic structural diagram of an a terminal in the thyristor shown in fig. 1;

fig. 7 is an exploded view of the thyristor of fig. 1;

FIG. 8 is a cross-sectional view of a second thyristor according to the utility model;

fig. 9 is a schematic structural diagram of a spacer in the thyristor shown in fig. 8.

The reference symbols shown in the figures are: 1-a pipe shell; 10-inserting sleeve; 11-A terminal; 12-a plug-in part; 13-a positioning section; 14-a wiring portion; 15-positioning the clamp hole; 17-a card slot; 18-a wire insertion hole; 19-annular blocking edge; 100-axial ribs; 101-a stop surface; 16-axial grooving; 2-an anode block; 21-a second limit stop table; 3-cathode block; 31-a first stop; a 4-gate assembly; 5-chip; 6-a plug-in connector; a 61-B terminal; 62-an electrical receptacle; 7-an annular end plate; 8-a positioning frame.

Detailed Description

The specific structure of the thyristor in the utility model is described below with reference to the drawings in the specification:

a thyristor is shown in figures 1 to 7 and comprises a tube shell 1, an anode block 2, a cathode block 3, a gate pole assembly 4 and a chip 5 which are arranged in the tube shell 1, wherein an outwards protruding plug bush 10 is formed on the side wall of the tube shell 1, the plug bush 10 is of an integrated closed ring structure, two A terminals 11 are clamped inside the plug bush 10, the two A terminals 11 are respectively connected with the gate pole assembly 4 and the cathode block 3 through leads, a plug connector 6 is matched and plugged on the plug bush 10, two B terminals 61 which are respectively matched with the A terminals 11 in a plugging mode are arranged on the plug connector 6, and the B terminals 61 are connected with external wires. In this embodiment, outwards convex plug bush 10 has on the pipe shell 1 lateral wall of thyristor, and plug bush 10 formula closed loop configuration as an organic whole, A terminal 11 is fixed inside plug bush 10, when outside bayonet joint 6 is pegged graft with plug bush 10 and is formed, B terminal 61 on the bayonet joint 6 forms with A terminal 11 and is inserted to, thereby realized the electricity and connected, it plays outside safeguard effect to alternate the cooperation through bayonet joint 6 and plug bush 10, avoid A terminal 11 to receive external striking easily and take place the problem of warping, and possess dustproof effect, thereby the performance of product has been improved.

Furthermore, a positioning clamp hole 15 is formed in the plug bush 10 on the side wall of the tube shell 1, each a terminal 11 sequentially comprises a plug part 12, a positioning part 13 and a wiring part 14 along the axial direction, the plug part 12 extends into the plug bush 10 to be in butt-plug fit with the B terminal 61, the positioning part 13 is in clamping fit with the positioning clamp hole 15, and the wiring part 14 extends into the tube shell 1 to be connected with a corresponding lead; when the thyristor is assembled, the A terminal 11 is inserted into the positioning clamp hole 15, so that the positioning part 13 is clamped with the positioning clamp hole 15 to realize the installation of the A terminal 11.

Furthermore, the a terminal 11 is cylindrical, the inserting part 12 is divided into a plurality of relatively independent elastic inserting strips by the axial slot 16, the root of the axial slot 16 extends to the positioning part 13, the outer wall of the positioning part 13 is provided with a clamping groove 17 clamped with the edge of the positioning clamping hole 15, by adopting the structure, the inserting part 12 can bear certain elastic shrinkage by the arrangement of the axial slot 16, so that the installation of the a terminal 11 and the insertion and matching with the B terminal 61 are more smooth, particularly, when the a terminal 11 is installed, the a terminal 11 is inserted into the positioning clamping hole 15 from inside to outside, namely, the inserting part 12 of the a terminal 11 is inserted into the positioning clamping hole 15 firstly, the inserting part 12 is elastically shrunk firstly in the inserting process, the inserting is stopped after the inserting part 12 completely passes through the positioning clamping hole, and the edge of the positioning clamping hole 15 is clamped with the clamping groove 17 at this moment, the inserting part 12 is rebounded and reset, and the inserting process is smoother. The cross-section of the axial slot 16 may be cross-shaped, or in-line, or herringbone.

Preferably, the positioning clamp hole 15 is a circular hole, the clamping groove 17 is an annular groove, and the periphery of the positioning clamp hole 15 is matched with the annular groove in a more proper position.

In this embodiment, the tail end of the wire connecting portion 14 is provided with a wire inserting hole 18, and after the end of the corresponding lead wire is inserted into the wire inserting hole 18, the wire connecting portion 14 is pressed to deform the wire inserting hole 18 so as to press the end of the lead wire tightly, so that the wire connection is convenient, when in wire connection, the end of the lead wire is inserted into the wire inserting hole 18, and then the wire connecting portion 14 is pressed to deform by using a tool pliers so as to tightly connect the wire connecting portion 14 and the end of the lead wire; when assembling the thyristor, the lead and the wiring portion 14 may be connected to the outside of the case 1, and then the a terminal 11 may be mounted on the case 1.

As a modified design of the above embodiment, the package 1 is made of plastic, and the a terminal 11 and the package 1 are integrally injection-molded, so that the assembly process of the a terminal 11 and the package 1 is omitted, and the fixed connection is reliable.

As a further improvement scheme in this embodiment, the tube case 1 is a hollow structure with two open ends, the anode block 2 and the cathode block 3 are respectively positioned and installed at the open ends of the tube case 1, the chip 5 is positioned and arranged between the anode block 2 and the cathode block 3, the gate assembly 4 is installed on the cathode block 3, an annular blocking edge 19 is formed on the inner side of the open end at one end of the tube case 1, an annular end plate 7 is positioned and installed on the inner side of the open end at the other end of the tube case 1, a first blocking platform 31 in abutting fit with the annular blocking edge 19 is arranged on the cathode block 3, a second limiting blocking platform 21 in abutting fit with the annular end plate 7 is arranged on the anode block 2, and the inner cavity of the tube case 1 is filled with sealant; when assembling the thyristor, the cathode block 3, the chip 5 and the anode block 2 are sequentially installed in the tube shell 1 (before the cathode block 3 is installed in the tube shell 1, the gate assembly 4 is installed on the cathode block 3, the lead wire is connected with the terminal A11, the terminal A11 is installed on the tube shell 1), then the tube shell 1 is filled with sealant, after the filling, the annular end plate 7 is sleeved on the outer part of the anode block 2, and the annular end plate 7 is connected with the tube shell 1 in place, so that the assembling is convenient; in actual operation, the anode block 2 and the cathode block 3 can be installed in an exchange position; the sealant may be silicone gel.

In this embodiment, axial ribs 100 distributed along the circumferential direction are formed on the inner wall of the tube shell 1, the strength of the tube shell 1 can be enhanced by the arrangement of the axial ribs 100, and when the annular end plate 7 is installed, the inner side periphery of the annular end plate 7 abuts against a stop surface 101 in the tube shell 1 to perform a stop limiting function; the outer edge of the annular end plate 7 is connected with the tube shell 1 through glue in a glued mode or a clamping mode through a buckle.

As a further improvement, in the embodiment, the annular end plate 7 is arranged to be a transparent structure, so that a worker can conveniently check the sealant injection condition inside the tube shell 1 through the transparent annular end plate 7; in order to prevent the sealant from overflowing, a sealing ring (not shown) may be disposed on both the annular flange 19 and the inner peripheral wall of the annular end plate 7.

As an embodiment of the above embodiment, referring to fig. 8 and 9, in order to solve the problem that the chip 5 with a smaller diameter size is difficult to position when being mounted, a positioning frame 8 is added on the basis of the above embodiment, the chip 5 is positioned by the positioning frame 8, the positioning frame 8 is sleeved on the periphery of the chip 5, the positioning frame 8 is in a hollow annular structure, and thus the contact between the chip 5 and the cathode block 3 and the anode block 2 is not affected; further, the locating rack 8 accessible with anode block 2 or cathode block 3 are connected (joint, splice or butt etc.) and are tentatively fixed a position to avoid locating rack 8 to take place to shift when the equipment.

In this embodiment, the B terminal 61 has an electrical socket 62 that is mated with the plug part 12, and when the B terminal 61 is plugged into the a terminal 11, the plug part 12 on the a terminal 11 is inserted into the electrical socket 62 to form a tight contact.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the utility model are deemed to be covered by the present invention.

Claims (10)

1. The utility model provides a thyristor, includes tube (1) to and locate anode block (2), negative pole piece (3), gate pole subassembly (4) and chip (5) in tube (1), its characterized in that, the shaping has outside convex plug bush (10) on tube (1) lateral wall, plug bush (10) formula closed ring structure as an organic whole, plug bush (10) inside clamps has two A terminals (11), two A terminals (11) respectively through the lead wire with gate pole subassembly (4) and negative pole piece (3) link to each other, the matching interlude has bayonet joint (6) on plug bush (10), be equipped with on bayonet joint (6) two respectively with two A terminal (11) are to inserting complex B terminal (61), external electric wire is connected to B terminal (61).

2. The thyristor according to claim 1, wherein a positioning clamp hole (15) is formed in the plug bush (10) on the side wall of the tube shell (1), each a terminal (11) sequentially comprises a plug part (12), a positioning part (13) and a wiring part (14) along the axial direction, the plug part (12) extends into the plug bush (10) to be in plug fit with the B terminal (61), the positioning part (13) is in clamping fit with the positioning clamp hole (15), and the wiring part (14) extends into the tube shell (1) to be connected with a corresponding lead.

3. The thyristor according to claim 2, wherein the a terminal (11) is cylindrical, the insertion part (12) is divided into a plurality of relatively independent elastic insertion strips by an axial slot (16), the root of the axial slot (16) extends to the positioning part (13), and a clamping groove (17) clamped with the edge of the positioning clamping hole (15) is formed in the outer wall of the positioning part (13).

4. The thyristor according to claim 3, wherein the locator card hole (15) is a circular hole and the slot (17) is an annular groove.

5. A thyristor according to claim 3, wherein the terminal portion (14) terminates in a wire insertion hole (18), and after the end of the respective lead has been inserted into the wire insertion hole (18), the terminal portion (14) is crimped to deform the wire insertion hole (18) and press the end of the lead.

6. The thyristor according to claim 1, characterized in that the a-terminal (11) is injection molded in one piece with the case (1).

7. The thyristor according to claim 1, wherein the tube case (1) is a hollow structure with two open ends, the anode block (2) and the cathode block (3) are respectively positioned and installed at the open ends of the tube case (1), the chip (5) is positioned and arranged between the anode block (2) and the cathode block (3), the gate assembly (4) is installed on the cathode block (3), an annular blocking edge (19) is formed on the inner side of the open end at one end of the tube case (1), an annular end plate (7) is positioned and installed on the inner side of the open end at the other end of the tube case (1), one of the anode block (2) and the cathode block (3) is provided with a first blocking platform (31) in abutting fit with the annular blocking edge (19), and the other is provided with a second limiting blocking platform (21) in abutting fit with the annular end plate (7), and the inner cavity of the tube shell (1) is filled with sealant.

8. The thyristor according to claim 7, characterized in that the inner wall of the tube shell (1) is formed with circumferentially distributed axial ribs (100), the inner circumferential edge of the ring-shaped end plate (7) abuts against a stop surface (101) in the tube shell (1);

the outer edge of the annular end plate (7) is glued or clamped with the pipe shell (1).

9. The thyristor according to claim 7, characterized in that the ring-shaped end plate (7) is a transparent structure; and sealing rings are arranged on the annular blocking edge (19) and the inner peripheral wall of the annular end plate (7).

10. The thyristor according to claim 7, wherein a positioning frame (8) is further sleeved on the periphery of the chip (5), and the positioning frame (8) is a hollow annular structure.

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