CN212304051U

CN212304051U - Key plug structure

Info

Publication number: CN212304051U
Application number: CN202021180962.7U
Authority: CN
Inventors: 傅群
Original assignee: Hangzhou Dongchan Temperature Control Equipment Co Ltd
Current assignee: Hangzhou Dongchan Temperature Control Equipment Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-01-05
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a button plug structure. It includes the shell rubber coating, shell rubber coating internal fixation has the assembly subassembly, the assembly subassembly includes fixed plate and gland body, the gland body is installed on the fixed plate, it is inside gland body is arranged in to install assembly box and assembly box on the fixed plate, be equipped with elasticity preforming and key base in the assembly box, elasticity preforming one end is installed inside the assembly box, the elasticity preforming other end is installed in the key base bottom, key base and assembly box rotate to be connected, the assembly box, all be equipped with on sealed lid and the shell rubber coating with key base assorted through-hole, the outside of shell rubber coating is arranged in to the through-hole is passed at the top of key base, be fixed with on the elasticity preforming and touch piece and pin one, install pin two in the assembly box, the side of touch piece is arranged in to pin two, pin one and pin two all run through. The utility model has the advantages that: simple structure, firm durable, the leakproofness is good and the security is high.

Description

Key plug structure

Technical Field

The utility model belongs to the technical field of the relevant technique of plug and specifically relates to indicate a button plug structure.

Background

The Connector (Connector) of a general electronic product and the Pin (Pin) of an electrical appliance are called as plugs. A plug and socket for domestic AC power supply has a male connector in the shape of rod or copper plate and a female connector-type power supply socket with slot or concave hole. The dimensions are an important technical requirement in relation to whether the plug and socket and the converter can be used safely and whether the universal interchangeability requirement is met to avoid misinsertions. Unqualified size can influence the user and use or produce hidden danger such as contact failure, mistake interpolation, and light then the equipment damage, can produce conflagration and electric shock accident by weight. The application of the plug is wide, the plug can be needed by large and small industries, namely, where electricity is needed and where the plug is visible, the application of the plug and all corners of our life are covered.

Poor plug quality is an important cause of electrical fire and electric leakage, and the quality problem of the small plug can cause serious harm to the personal and property safety of consumers. Plug structure among the prior art is complicated, and the assembly process is complicated loaded down with trivial details, and this must lead to the effect of equipment not good, makes the plug structure produce not hard up or appear the gap, and dust and moisture in the air then can get into the plug along these gaps inside for the inner structure of plug consequently damages, takes place short circuit phenomenon, causes user's electric shock accident.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the complicated equipment difficulty that leads to of plug structure in prior art, and assemble the back easily not hard up and make dust and moisture get into inside, take place the not enough of short circuit and electric shock phenomenon, provide a simple structure, firmly durable, the leakproofness is good and the high button plug structure of security.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a key plug structure comprises a shell rubber coating, wherein a shell cavity is arranged in the shell rubber coating, an assembly component is fixed in the shell cavity and comprises a fixed plate and a sealing cover body matched with the fixed plate, the sealing cover body is arranged on the fixed plate, an assembly box is arranged on the fixed plate and is arranged in the sealing cover body, an elastic pressing sheet and a key base are arranged in the assembly box, one end of the elastic pressing sheet is arranged in the assembly box, the other end of the elastic pressing sheet is arranged at the bottom of the key base, the key base is rotatably connected with the assembly box, a first through hole, a second through hole and a third through hole which are matched with the key base are respectively arranged on the top surface of the assembly box, the top surface of the sealing cover and the top surface of the shell rubber coating, the top of the key base sequentially penetrates through the first through hole, the second through hole, the elastic pressing sheet is fixedly provided with a contact block and a first pin, a second pin is installed in the assembly box and is arranged on the side surface of the contact block, and the first pin and the second pin penetrate through the assembly box and are arranged in the sealing cover body.

The assembly component comprises a fixed plate and a sealing cover body matched with the fixed plate, the sealing cover body is arranged on the fixed plate, an assembly box is arranged on the fixed plate and is arranged in the sealing cover body, an elastic pressing sheet and a key base are arranged in the assembly box, one end of the elastic pressing sheet is arranged in the assembly box, the other end of the elastic pressing sheet is arranged at the bottom of the key base, the key base is rotatably connected with the assembly box, a first through hole, a second through hole and a third through hole which are matched with the key base are respectively arranged on the top surface of the assembly box, the top surface of the sealing cover and the top surface of the encapsulation of the shell, the top of the key base sequentially penetrates through the first through hole, the second through hole and the third through hole to be arranged outside the encapsulation of the shell, a contact block and a first pin are fixed on the elastic pressing sheet, a second pin is, the first pin and the second pin penetrate through the assembly box and are arranged in the sealing cover body, the shell is encapsulated by rubber to form an integrated injection molding structure, and the integrated injection molding structure is injected outside the sealing cover body, so that the sealing performance of the plug is guaranteed, and the plug structure is firmer and more durable; the sealing cover body is an insulator, so that the protection and insulation effects of the assembly box are achieved, the injection molding of the shell encapsulation is facilitated, external dust and moisture can be well prevented from entering the assembly box to damage the internal structure of the assembly box through the matching of the sealing cover body and the shell encapsulation, and the safety of a plug is guaranteed; the user can carry out the button through the key holder, and the contact and the separation of control contact piece and pin two, and then realize the intercommunication and the disconnection of circuit, simple structure, it is also very convenient to control.

Preferably, the upper end face of the fixing plate is provided with a fixing plate clamping groove matched with the assembling box, the assembling box is clamped with the fixing plate through the fixing plate clamping groove, the fixing plate is provided with a first threaded hole, the sealing cover body is provided with a second threaded hole matched with the first threaded hole, and the sealing cover body is in threaded connection with the fixing plate through the matching of the second threaded hole and the first threaded hole.

As preferred, the assembly box includes the joint on the fixed plate assembly base and with assembly base assorted assembly upper cover, the connection can be dismantled with the assembly upper cover to the assembly base, the assembly box internal fixation has the installation piece, the elasticity preforming is installed on the installation piece, simple structure, the installation convenient and fast that gets up, convenient operation, the maintenance in the later stage of being convenient for.

As preferred, the both sides of assembly base all are fixed with vertical flange, are equipped with the spout on the vertical flange, the both sides of assembly upper cover be fixed with vertical flange assorted vertical concave plate, be fixed with on the vertical concave plate with spout assorted slider, the cooperation and the assembly upper cover sliding connection of spout on the vertical flange and the slider on the vertical concave plate of assembly base pass through between them for assembly base and assembly upper cover installation convenient and fast more.

Preferably, the installation block is fixed between two vertical convex plates on the assembly base, one side of the installation block is provided with an open slot matched with the elastic pressing sheet, the elastic pressing sheet is installed in the installation block through the open slot, the installation block is internally provided with a groove matched with the contact block and a clamping seat matched with a pin, the contact block is arranged in the groove, the pin is arranged in the clamping seat, the pin is fixed at one side of the elastic pressing sheet, the contact block is fixed at the middle position of the elastic pressing sheet, the other side of the elastic pressing sheet passes through the installation block to be installed on the key seat, the elastic pressing sheet can be installed in the installation block through the open slot, the clamping seat is used for fixing one side of the elastic pressing sheet, the other side of the elastic pressing sheet is stirred through the key seat, the contact block can.

Preferably, a first pin mounting groove matched with the first pin is formed in the side face of one of the vertical convex plates, one end of the first pin is fixed to one side of the elastic pressing sheet, the other end of the first pin penetrates through the first pin mounting groove and is arranged outside the assembling box, a second pin mounting groove matched with the second pin is formed in the vertical convex plate and is communicated with the bottom of the groove, one end of the second pin penetrates through the second pin mounting groove and is arranged at the bottom of the groove, the other end of the second pin is arranged outside the assembling box, the second pin is arranged at the bottom of the groove, and when the contact block vertically jumps in the groove, the contact block can be in contact with and separated from the second pin, so that the connection and disconnection effects of a circuit are achieved.

Preferably, a pin I and a plurality of pin II are fixed on the fixing plate, the pin I and the pin II penetrate through the cavity of the shell and are arranged outside the shell encapsulation, the pin I is connected with the other end of the pin I, a connector I is fixed on the pin II, a connector II is fixed on the other end of the pin II, the connector I and the connector II penetrate through the sealing cover and are arranged in the cavity of the shell, the plug is electrically connected with the socket through the pin I and the pin II, the pin I is connected with the live wire through the connector II on the pin II, and the pin II can be set into one or more pins to be connected with the neutral wire so as to adapt to different power supply voltages.

As preferred, install at the top of installation piece and rotate with the installation piece and be connected the key seat, install the connecting rod in the bottom of key seat, the one end and the key seat of connecting rod rotate to be connected, and the other end of connecting rod is fixed with elasticity preforming assorted preforming draw-in groove, and the other end of elasticity preforming passes the installation piece and installs on preforming draw-in groove, simple structure, easy installation, convenient operation.

Preferably, the top of the installation block is fixed with a first vertical plate, the bottom of the key base is fixed with a second vertical plate perpendicular to the first vertical plate, the bottom of the second vertical plate is provided with an installation groove matched with the first vertical plate, the first vertical plate is arranged in the installation groove, the width of the bottom of the installation groove is smaller than that of the opening of the installation groove, the key base is installed on the installation block through the cooperation of the installation groove on the second vertical plate and the first vertical plate and is connected with the installation block in a rotating mode, the structure is simple, control is convenient, the top of the first vertical plate and the bottom of the installation groove can be set to be circular arcs matched with each other, abrasion is reduced, and circular smoothness and comfort are further improved when the keys are pressed.

As preferred, the both sides of vertical flange bottom all are equipped with screw hole three, all be fixed with on the other both sides of assembly upper cover with vertical flange looks vertically vertical apron, the bottom of vertical apron is equipped with screw hole four that matches with the screw hole three-phase, the assembly base passes through screw hole three on the vertical flange and the cooperation of screw hole four on the vertical apron and assembly upper cover threaded connection, through-hole one is located the assembly upper cover, threaded connection stability is good, the installation is got up convenient and fast, and convenient operation, the later maintenance of being convenient for.

The utility model has the advantages that: the shell is encapsulated by rubber to form an integrated injection molding structure, and the rubber is injected outside the sealing cover, so that the sealing performance of the plug is ensured, and the plug structure is firmer and more durable; the sealing cover body plays a role in protecting and insulating the assembly box on one hand, and facilitates the injection molding of the shell encapsulation on the other hand, and through the matching of the sealing cover body and the shell encapsulation, external dust and moisture can be well prevented from entering the assembly box to damage the internal structure of the assembly box, so that the safety of the plug is ensured; a user can press keys through the key base to control the contact and separation of the contact block and the second pin, so that the connection and disconnection of the circuit are realized, the structure is simple, and the control is very convenient; the operation is convenient during the processing installation, and production efficiency is high, and the yield is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a front view of the mounting assembly of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a coupling view of the inner assembly housing and the stationary plate of FIG. 2;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a top view of the fixing plate portion of FIG. 2;

FIG. 7 is a left side view of the assembly box portion of FIG. 4;

FIG. 8 is a right side view of the assembly box portion of FIG. 4;

FIG. 9 is a schematic view of the structure of FIG. 8 with the upper cover assembled;

FIG. 10 is a schematic view of the construction of the mounting base of FIG. 8;

FIG. 11 is an internal structural view of FIG. 10;

FIG. 12 is an assembled view of the parts of the mounting base of FIG. 8;

FIG. 13 is an enlarged view at A in FIG. 12;

fig. 14 is an assembly view of the key base and mounting block of fig. 12.

In the figure: 1. the novel electronic device comprises a shell, a first through hole, a second through hole, a third through hole, a key base, a third shell cavity, an assembly component, a first sealing cover body, a second sealing cover body, a fixing plate, a first through hole, a second connector lug, a first assembly box, a first fixing plate clamping groove, a first threaded hole, a first pin, a first through hole, a first pin, a second assembly cover, a second pin, a first pin mounting groove, a second pin, a vertical concave plate, a sliding block, a fourth threaded hole, a first pin, a second pin, a third pin, a second pin.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

In the embodiment shown in fig. 1, a key plug structure includes a housing encapsulation 1, a housing cavity 4 is provided in the housing encapsulation 1, and an assembly component 5 is fixed in the housing cavity 4, as shown in fig. 2, the assembly component 5 includes a fixing plate 7 and a sealing cover 6 matched with the fixing plate 7, and the sealing cover 6 is mounted on the fixing plate 7.

As shown in fig. 2 and 4, the mounting box 11 is mounted on the fixing plate 7, and the mounting box 11 is disposed inside the sealing cover 6, as shown in fig. 8 and 12, an elastic pressing sheet 36 and a key base 3 are disposed in the mounting box 11, one end of the elastic pressing sheet 36 is mounted inside the mounting box 11, the other end of the elastic pressing sheet 36 is mounted at the bottom of the key base 3, and the key base 3 is rotatably connected with the mounting box 11.

As shown in fig. 1, 3 and 5, a first through hole 15, a second through hole 8 and a third through hole 2 which are matched with the key base 3 are respectively arranged on the top surface of the assembly box 11, the top surface of the sealing cover and the top surface of the casing encapsulation 1, and the top of the key base 3 sequentially penetrates through the first through hole 15, the second through hole 8 and the third through hole 2 to be arranged outside the casing encapsulation 1.

As shown in fig. 5 and 12, the contact block 34 and the first pin 14 are fixed on the elastic pressing sheet 36, the second pin 16 is installed in the assembly box 11, the second pin 16 is disposed on the side surface of the contact block 34, and both the first pin 14 and the second pin 16 penetrate through the assembly box 11 and are disposed in the sealing cover body 6.

As shown in fig. 4 and 5, a fixing plate clamping groove 12 matched with the assembly box 11 is formed in the upper end face of the fixing plate 7, the assembly box 11 is clamped with the fixing plate 7 through the fixing plate clamping groove 12, a first threaded hole 13 is formed in the fixing plate 7, a second threaded hole matched with the first threaded hole 13 is formed in the sealing cover body 6, and the sealing cover body 6 is in threaded connection with the fixing plate 7 through the matching of the second threaded hole and the first threaded hole 13.

As shown in fig. 7 and 8, the assembly box 11 includes an assembly base 20 clamped on the fixing plate 7 and an assembly upper cover 19 matched with the assembly base 20, the assembly base 20 and the assembly upper cover 19 are detachably connected, as shown in fig. 11 and 12, an installation block 30 is fixed in the assembly box 11, and an elastic pressing sheet 36 is installed on the installation block 30.

As shown in fig. 9 and 10, vertical protruding plates 27 are fixed on both sides of the assembly base 20, sliding grooves 28 are formed on the vertical protruding plates 27, vertical concave plates 23 matched with the vertical protruding plates 27 are fixed on both sides of the assembly upper cover 19, sliding blocks 24 matched with the sliding grooves 28 are fixed on the vertical concave plates 23, and the assembly base 20 is slidably connected with the assembly upper cover 19 through the matching of the sliding grooves 28 on the vertical protruding plates 27 and the sliding blocks 24 on the vertical concave plates 23.

As shown in fig. 11 and 12, the mounting block 30 is fixed between two vertical protruding plates 27 on the mounting base 20, an opening groove 33 matched with the elastic pressing piece 36 is formed on one side of the mounting block 30, and the elastic pressing piece 36 is installed in the mounting block 30 through the opening groove 33.

As shown in fig. 12 and 13, a groove 35 matching with the contact block 34 and a holder 32 matching with the first pin 14 are provided in the mounting block 30, the contact block 34 is disposed in the groove 35, the first pin 14 is disposed in the holder 32, the first pin 14 is fixed to one side of the elastic pressing piece 36, the contact block 34 is fixed to the middle of the elastic pressing piece 36, and the other side of the elastic pressing piece 36 passes through the mounting block 30 and is mounted on the key base 3.

As shown in fig. 8, a first pin mounting groove 22 matched with the first pin 14 is formed in a side surface of one of the vertical protruding plates 27, one end of the first pin 14 is fixed to one side of the elastic pressing piece 36, and the other end of the first pin 14 passes through the first pin mounting groove 22 and is arranged outside the assembly box 11, as shown in fig. 7, a second pin mounting groove 21 matched with the second pin 16 is formed in the vertical protruding plate 27, the second pin mounting groove 21 is communicated with the bottom of the groove 35, one end of the second pin 16 passes through the second pin mounting groove 21 and is arranged at the bottom of the groove 35, and the other end of the second pin 16 is arranged outside the assembly box 11.

As shown in fig. 6, a first pin 17 and a plurality of second pins 18 are fixed on the fixing plate 7, the first pin 17 and the second pins 18 both penetrate through the housing cavity 4 and are arranged outside the housing encapsulation 1, the first pin 17 is connected with the other end of the first pin 14, a first connector 10 is fixed on the second pin 18, as shown in fig. 5, a second connector 9 is fixed on the other end of the second pin 16, and the first connector 10 and the second connector 9 both penetrate through the sealing cover 6 and are arranged in the housing cavity 4.

As shown in fig. 12, the key base 3 is installed at the top of the installation block 30 and is rotatably connected with the installation block 30, the connection rod 31 is installed at the bottom of the key base 3, one end of the connection rod 31 is rotatably connected with the key base 3, the other end of the connection rod 31 is fixed with a pressing sheet clamping groove 37 matched with an elastic pressing sheet 36, and the other end of the elastic pressing sheet 36 penetrates through the installation block 30 and is installed on the pressing sheet clamping groove 37.

As shown in fig. 13, a first vertical plate 40 is fixed at the top of the mounting block 30, a second vertical plate 38 perpendicular to the first vertical plate 40 is fixed at the bottom of the key base 3, a mounting groove 39 matched with the first vertical plate 40 is formed in the bottom of the second vertical plate 38, the first vertical plate 40 is placed in the mounting groove 39, the width of the bottom of the mounting groove 39 is smaller than the width of an opening of the mounting groove 39, and the key base 3 is mounted on the mounting block 30 through the matching of the mounting groove 39 on the second vertical plate 38 and the first vertical plate 40 and is rotatably connected with the mounting block 30.

As shown in fig. 9 and 10, two sides of the bottom of the vertical protruding plate 27 are provided with a third threaded hole 29, the other two sides of the assembly upper cover 19 are fixed with vertical cover plates 26 perpendicular to the vertical protruding plate 27, the bottom of the vertical cover plate 26 is provided with a fourth threaded hole 25 matching with the third threaded hole 29, the assembly base 20 is in threaded connection with the assembly upper cover 19 through matching of the third threaded hole 29 on the vertical protruding plate 27 and the fourth threaded hole 25 on the vertical cover plate 26, and the first through hole 15 is located on the assembly upper cover 19.

The assembling process comprises the following steps:

the key base 3 is arranged on the mounting block 30 through the matching of the mounting groove 39 on the second vertical plate 38 and the first vertical plate 40; welding and injection-molding the contact block 34 and the first pin 14 on the elastic pressing sheet 36, then sliding the injection-molded elastic pressing sheet 36 into the mounting block 30 along the open slot 33 of the mounting block 30 on the assembly base 20, wherein the contact block 34 slides into the groove 35, one side of the elastic pressing sheet 36 with the first pin 14 is clamped into the clamping seat 32 for fixation (the other end of the first pin 14 is arranged outside through the first pin mounting slot 22), and the other end of the elastic pressing sheet 36 passes through the mounting block 30 and is mounted on the pressing sheet clamping slot 37 of the key base 3; the second pin 16 is arranged at the bottom of the groove 35 through the second pin mounting groove 21 (the other end of the second pin 16 is arranged outside through the second pin mounting groove 21); finally, the assembly upper cover 19 is covered on the assembly base 20 through the matching of the sliding groove 28 on the vertical convex plate 27 and the sliding block 24 on the vertical concave plate 23 (the top of the key base 3 is placed in the through hole one 15 of the assembly box 11), and the threaded hole three 29 and the threaded hole four 25 are screwed through fastening bolts, so that the assembly of the assembly box 11 is completed.

Clamping the assembled assembly box 11 on a fixing plate clamping groove 12 of a fixing plate 7, and fixing a pin I17 and a pin II 18 on the fixing plate 7 (connecting the other end of the pin I14 with the pin I17); a first connector lug 10 for wiring is welded on the pin II 18, and a second connector lug 9 for wiring is welded on the other end of the pin II 16; covering the fixing plate 7 with a sealing cover body 6, and screwing the first threaded hole 13 and the second threaded hole through fastening bolts (the top of the key base 3 is arranged in the second through hole 8 of the sealing cover body 6); and finally, performing injection molding on the outside of the sealing cover body 6 to form the shell encapsulation 1, and finishing the processing of the plug (the top of the key base 3 is arranged in the through hole III 2 on the shell encapsulation 1, and the first wiring terminal 10 and the second wiring terminal 9 both penetrate through the sealing cover body 6 and are arranged in the shell cavity 4 of the shell encapsulation 1).

Claims

1. A key plug structure is characterized by comprising a shell rubber coating (1), a shell cavity (4) is arranged in the shell rubber coating (1), an assembly component (5) is fixed in the shell cavity (4), the assembly component (5) comprises a fixing plate (7) and a sealing cover body (6) matched with the fixing plate (7), the sealing cover body (6) is installed on the fixing plate (7), an assembly box (11) is installed on the fixing plate (7), the assembly box (11) is arranged in the sealing cover body (6), an elastic pressing sheet (36) and a key base (3) are arranged in the assembly box (11), one end of the elastic pressing sheet (36) is installed in the assembly box (11), the other end of the elastic pressing sheet (36) is installed at the bottom of the key base (3), and the key base (3) is rotatably connected with the assembly box (11), the top surface of assembly box (11), the top surface of sealed lid and the top surface of shell rubber coating (1) are equipped with respectively and place in the outside of shell rubber coating (1) with key base (3) assorted through-hole (15), through-hole two (8) and through-hole three (2), pass through-hole one (15), through-hole two (8) and through-hole three (2) in proper order at the top of key base (3), be fixed with on elasticity preforming (36) and contact piece (34) and pin one (14), install pin two (16) in assembly box (11), the side of contact piece (34) is placed in to pin two (16), pin one (14) and pin two (16) all run through assembly box (11) and place in sealed lid (6).

2. The key plug structure according to claim 1, wherein a fixing plate clamping groove (12) matched with the assembling box (11) is formed in the upper end face of the fixing plate (7), the assembling box (11) is clamped with the fixing plate (7) through the fixing plate clamping groove (12), a first threaded hole (13) is formed in the fixing plate (7), a second threaded hole matched with the first threaded hole (13) is formed in the sealing cover body (6), and the sealing cover body (6) is in threaded connection with the fixing plate (7) through the matching of the second threaded hole and the first threaded hole (13).

3. A key plug structure according to claim 1, wherein the assembly box (11) comprises an assembly base (20) clamped on the fixing plate (7) and an assembly upper cover (19) matched with the assembly base (20), the assembly base (20) and the assembly upper cover (19) are detachably connected, a mounting block (30) is fixed in the assembly box (11), and the elastic pressing sheet (36) is mounted on the mounting block (30).

4. A key plug structure according to claim 3, wherein both sides of the assembly base (20) are fixed with vertical protruding plates (27), the vertical protruding plates (27) are provided with sliding grooves (28), both sides of the assembly upper cover (19) are fixed with vertical concave plates (23) matched with the vertical protruding plates (27), the vertical concave plates (23) are fixed with sliding blocks (24) matched with the sliding grooves (28), and the assembly base (20) is slidably connected with the assembly upper cover (19) through the matching of the sliding grooves (28) on the vertical protruding plates (27) and the sliding blocks (24) on the vertical concave plates (23).

5. A push-button plug construction according to claim 4, characterised in that the mounting block (30) is secured between two vertical flanges (27) on the mounting base (20), one side of the mounting block (30) is provided with an open slot (33) matched with the elastic pressing sheet (36), the elastic pressing sheet (36) is arranged in the mounting block (30) through an opening groove (33), a groove (35) matched with the contact block (34) and a clamping seat (32) matched with the first pin (14) are arranged in the mounting block (30), the contact block (34) is arranged in the groove (35), the first pin (14) is arranged in the clamping seat (32), the first pin (14) is fixed on one side of the elastic pressing sheet (36), the contact block (34) is fixed in the middle of the elastic pressing sheet (36), the other side of the elastic pressing sheet (36) passes through the mounting block (30) and is mounted on the key base (3).

6. A key plug structure according to claim 5, wherein a first pin mounting groove (22) matched with the first pin (14) is formed on a side surface of a vertical protruding plate (27), one end of the first pin (14) is fixed to one side of the elastic pressing piece (36), the other end of the first pin (14) passes through the first pin mounting groove (22) to be disposed outside the assembly box (11), a second pin mounting groove (21) matched with the second pin (16) is formed on the vertical protruding plate (27), the second pin mounting groove (21) is communicated with the bottom of the groove (35), one end of the second pin (16) passes through the second pin mounting groove (21) to be mounted at the bottom of the groove (35), and the other end of the second pin (16) is disposed outside the assembly box (11).

7. A key plug structure according to claim 6, wherein the fixing plate (7) is fixed with a pin I (17) and a plurality of pin II (18), the pin I (17) and the pin II (18) are both arranged outside the housing encapsulation (1) through the housing cavity (4), the pin I (17) is connected with the other end of the pin I (14), the pin II (18) is fixed with a connector I (10), the other end of the pin II (16) is fixed with a connector II (9), and the connector I (10) and the connector II (9) are both arranged in the housing cavity (4) through the sealing cover body (6).

8. A key plug structure according to claim 3, wherein the key base (3) is mounted on the top of the mounting block (30) and rotatably connected to the mounting block (30), a connecting rod (31) is mounted on the bottom of the key base (3), one end of the connecting rod (31) is rotatably connected to the key base (3), the other end of the connecting rod (31) is fixed with a pressing sheet slot (37) matched with the elastic pressing sheet (36), and the other end of the elastic pressing sheet (36) passes through the mounting block (30) and is mounted on the pressing sheet slot (37).

9. The key plug structure of claim 8, wherein a first vertical plate (40) is fixed at the top of the mounting block (30), a second vertical plate (38) perpendicular to the first vertical plate (40) is fixed at the bottom of the key base (3), a mounting groove (39) matched with the first vertical plate (40) is formed in the bottom of the second vertical plate (38), the first vertical plate (40) is arranged in the mounting groove (39), the width of the bottom of the mounting groove (39) is smaller than the width of an opening of the mounting groove (39), and the key base (3) is mounted on the mounting block (30) through the matching of the mounting groove (39) in the second vertical plate (38) and the first vertical plate (40) and is rotatably connected with the mounting block (30).

10. A key plug structure according to claim 4, characterized in that two sides of the bottom of the vertical protruding plate (27) are provided with a threaded hole III (29), the other two sides of the assembly upper cover (19) are fixed with vertical cover plates (26) perpendicular to the vertical protruding plate (27), the bottom of the vertical cover plates (26) is provided with a threaded hole IV (25) matched with the threaded hole III (29), the assembly base (20) is in threaded connection with the assembly upper cover (19) through the matching of the threaded hole III (29) on the vertical protruding plate (27) and the threaded hole IV (25) on the vertical cover plates (26), and the through hole I (15) is located on the assembly upper cover (19).