Terminal temperature measurement ammeter thermistor installation workpiece and installation method

Abstract

The invention discloses a terminal temperature measurement electric meter thermistor installation workpiece and an installation method, and relates to the technical field of terminal temperature measurement electric meter thermistor installation methods, and the terminal temperature measurement electric meter thermistor installation workpiece comprises a basic unit which comprises a printed board, a relay, a plurality of groups of pins, a plurality of groups of terminals and a thermistor; and the switching unit comprises a terminal pin, a female head, a male head and a lead. According to the device, through the design of the switching unit, the thermistor can be indirectly installed on the printed board, damage to the thermistor caused by high temperature in the conventional welding process is avoided, and meanwhile the installation difficulty is reduced. The son head of the switching unit can rotate relative to the mother head, so that the butt joint angle of the thermistor and the terminal is adjusted, the flat cable of the lead and the connector is optimized, and the flat cable layout is more reasonable. The thermistor is indirectly connected through the switching unit, so that the later maintenance and replacement are more convenient, the maintenance cost is reduced, and the overall service life of the electric meter is prolonged.

Description

Technical Field

[0001] The invention relates to the field of terminal temperature measuring ammeter thermistor installation methods, in particular to a terminal temperature measuring ammeter thermistor installation workpiece and an installation method. Background Art

[0002] For safe use, the electric energy meter needs to add a temperature measuring device at the current terminal, usually a thermistor. According to the type and structure of the electric energy meter, the current main type of thermistor is a wire thermistor, one end of which is a wire nose, riveted to the relay in the electric energy meter, and a rivet is reserved on the relay; the other end is a terminal head, welded to the printed circuit board in the electric energy meter. The advantage of this method is that the thermistor can be welded at any position of the printed circuit board, which is convenient for the design and wiring of the printed circuit board, and the signal terminal can be configured in the form structure of the electric energy meter; the disadvantage is that it has high requirements for the relay, and special customization is required when replacing the relay model, which limits the iteration of the product. In addition, when the relay and the current terminal of the electric energy meter are connected by welding, the excessively high welding temperature will also affect the thermistor, causing component failure and inability to be replaced later, and the connection line is relatively trivial, affecting the wiring. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the existing linear thermistor installation terminals have the potential risk of component damage, cannot be replaced later, and increase the complexity of wiring.

[0004] The above technical problem is solved by the following technical solution: The present invention provides a terminal temperature measuring ammeter thermistor mounting workpiece, which includes a basic unit, including a printed circuit board, a relay arranged on the printed circuit board, multiple groups of pins arranged on one side of the printed circuit board, multiple groups of terminals arranged on one side of the pins, and a thermistor on the upper end of the terminal;

[0005] An adapter unit includes a lead pin connected to the plug pin, a female connector provided at one end of the lead pin, a female connector provided at one side of the female connector, and a lead wire provided inside the female connector, wherein the lead wire is connected to the thermistor;

[0006] The sub-head can be rotated relative to the female head, thereby adjusting the docking angle between the thermistor and the terminal;

[0007] By rotating the male and female connectors, the connection wiring of the linear thermistor can be more adaptable and optimized, making it easier to replace the thermistor later.

[0008] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the thermistor includes a wire nose riveted to the terminal at one end and a connector connected to the pin at the other end;

[0009] The connector is connected to the lead;

[0010] Avoid soldering the thermistor directly to the printed circuit board to reduce the risk of damage.

[0011] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the female connector includes a housing clamped on both sides of the lead pin, and a trigger assembly arranged at the axis of the housing;

[0012] The sub-head includes an inner shell clamped on both sides of the lead; the inner shell and the outer shell are both hinged to the axis of the trigger component;

[0013] The outer shell and the inner shell are relatively snap-fitted and hinged together to reduce line misalignment.

[0014] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the lead pin includes a first elastic piece provided on the inner side of the housing;

[0015] The lead includes a second spring arranged on the inner side of the inner shell;

[0016] The first elastic piece and the second elastic piece are both hinged on the positioning shaft;

[0017] The positioning shaft can hinge the first elastic piece and the second elastic piece together to achieve current disconnection or connection.

[0018] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the housing includes a first clamping portion and a first docking portion protruding from the front end of the first clamping portion;

[0019] The inner shell includes a second clamping portion and a second docking portion protruding from the front end of the second clamping portion;

[0020] The first clamping portion and the second clamping portion are used to limit the lead pins and the leads to avoid disconnection of the circuit.

[0021] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: a spacer is provided between the first elastic pieces;

[0022] The first clamping portion and the second clamping portion are fixedly connected by screws respectively;

[0023] The spacer prevents the first spring circuit from being connected in series, which would result in incorrect connection of the thermistor.

[0024] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the trigger assembly includes a limit ring clamped on the inner side of the first docking portion, a plurality of limit blocks arranged in a circumferential array at the end of the limit ring, a first elastic member arranged on the inner side of the limit block, a pressing member arranged at the end of the first elastic member, and a second elastic member arranged on the inner side of the pressing member;

[0025] The interaction between the limiting block and the first elastic member, and the interaction between the pressing member and the second elastic member can cause the first elastic sheet and the second elastic sheet to fit together or separate from each other, so as to achieve connection or disconnection.

[0026] In a preferred embodiment of the terminal temperature measuring ammeter thermistor installation workpiece of the present invention: the limit block includes a column and a wedge block provided on one side of the column;

[0027] The wedge block includes a pressing surface for limiting the first elastic member, an inclined surface for sliding dislocation, and an extrusion surface for rebounding and pressing down the first elastic member;

[0028] After the downward pressing surface is restricted by the misalignment of the inclined surface, the restriction on the first elastic member can be released; and after the extrusion surface is reset, the first elastic member can be restricted by the restriction of the downward pressing surface again.

[0029] In a preferred embodiment of the terminal temperature measuring ammeter thermistor mounting workpiece of the present invention: the pressing member includes a pressing cap, a disc protruding from the bottom of the pressing cap, a pressing block protruding from the peripheral side of the disc, a dislocation rod protruding from the peripheral side of the disc, and a positioning block protruding from the peripheral side of the disc;

[0030] The second docking portion includes a tooth pattern protruding from a wall surface thereof;

[0031] After the positioning block is pressed down, it cooperates with the tooth pattern to limit the pressing piece.

[0032] The present invention also provides a terminal temperature measuring ammeter thermistor installation method, comprising the terminal temperature measuring ammeter thermistor installation workpiece, and further comprising:

[0033] Extend the current terminal and mill a V-shaped groove between the extended part and the original part;

[0034] A screw hole is provided in the extension portion of the current terminal;

[0035] Fix one end of the wire thermistor to the screw hole of the current terminal extension using a screw, wherein one end of the wire thermistor is a wire nose and the other end is a terminal head;

[0036] After the relay is welded to the current terminal, the terminal of the linear thermistor is welded to the printed circuit board in the electric energy meter.

[0037] The beneficial effects of the present invention are as follows: through the design of the adapter unit, the thermistor can be indirectly mounted on the printed circuit board, avoiding damage to the thermistor caused by the high temperatures during conventional welding and reducing installation difficulty. The adapter unit's male connector can be rotated relative to the female connector to adjust the docking angle between the thermistor and the terminal, optimizing the wiring of the leads and connectors and making the wiring layout more reasonable. Because the thermistor is indirectly connected through the adapter unit, subsequent maintenance and replacement are more convenient, reducing maintenance costs and increasing the overall service life of the meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0039] Figure 1 It shows the overall structural diagram of the thermistor installation workpiece of the terminal temperature measuring meter of the present invention;

[0040] Figure 2 Shown Figure 1 A schematic diagram of the enlarged local structure of the transfer unit at point A;

[0041] Figure 3 Shows a schematic structural diagram of the switching unit of the present invention;

[0042] Figure 4 Shows an exploded schematic diagram of the switching unit structure of the present invention;

[0043] Figure 5 It shows a schematic three-dimensional cross-sectional view of the structure of the adapter unit of the present invention;

[0044] Figure 6 A schematic diagram of the front cross-section structure of the adapter unit of the present invention is shown. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0046] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0047] Reference Figure 1 , this embodiment provides a terminal temperature measuring ammeter thermistor mounting workpiece, comprising a base unit 1, including a printed circuit board 11, a relay 12 arranged on the printed circuit board 11, a plurality of groups of pins 13 arranged on one side of the printed circuit board 11, a plurality of groups of terminals 14 arranged on one side of the pins 13, and a thermistor 15 on the upper end of the terminal 14;

[0048] The adapter unit 2 includes a lead pin 21 connected to the pin 13, a female connector 22 provided at one end of the lead pin 21, a female connector 23 provided on one side of the female connector 22, and a lead 24 provided inside the female connector 23, wherein the lead 24 is connected to the thermistor 15;

[0049] Furthermore, the sub-head 23 can be rotated relative to the female head 22 to adjust the docking angle between the thermistor 15 and the terminal 14.

[0050] The thermistor 15 includes a lug 151 riveted to the terminal 14 at one end and a connector 152 connected to the pin 13 at the other end;

[0051] The connector 152 is connected to the lead 24 .

[0052] In this embodiment, the relay 12 is fixedly connected to a predetermined position of the printed circuit board 11 by welding. A plurality of groups of pins 13 for connecting thermistors are reserved on the printed circuit board 11. Terminals 14 are installed at the bottom of the electric energy meter. The thermistor 15 in this embodiment is a linear thermistor. The conventional installation of the linear thermistor 15 is performed by riveting a wire nose 151 at one end to the terminal 14 and welding a connector 152 at the other end to the pin 13 on the printed circuit board 11, thereby achieving the temperature measurement requirement of the thermistor 15 on the current terminal. In this embodiment, the connector 152 of the thermistor 15 is connected to the lead 24 to achieve an indirect connection to the printed circuit board 11.

[0053] It should be noted that the adapter unit 2 can indirectly mount the thermistor 15 on the printed circuit board 11, thereby preventing the thermistor 15 from being heated by the soldering temperature during conventional soldering and causing it to become ineffective, and also reducing the difficulty of installation.

[0054] Preferably, the lead pins 21 can be soldered to the pins 13 of the printed circuit board 11, which can expand the applicable range of the pins 13. The lead pins 21 are connected to the female connector 22, which is electrically connected to the female connector 23 and can be rotated to optimize the wiring of the lead 24 and the connector 152.

[0055] In summary, the adapter unit 2 not only improves the flexibility of installation, but also ensures that the precise temperature measurement function of the thermistor 15 can be effectively exerted. Through the connection of the lead 24, the thermistor 15 can stably monitor the temperature changes of the current terminal, providing reliable data support for the temperature measurement function of the meter. At the same time, the thermistor 15 is more flexible during the installation process and can be rotated and adjusted according to actual needs to achieve the best temperature measurement effect and wiring layout. This indirect installation method is also convenient for later maintenance and replacement, reducing maintenance costs and increasing the overall service life of the meter.

[0056] Reference Figures 2 to 4 As an optional embodiment, the female connector 22 includes a housing 221 for clamping the lead pins 21 on both sides, and a trigger assembly 222 disposed at the axis of the housing 221;

[0057] The sub-head 23 includes an inner shell 231 clamped on both sides of the lead 24 ; the inner shell 231 and the outer shell 221 are both hinged to the axis of the trigger assembly 222 .

[0058] Furthermore, the lead pin 21 includes a first elastic piece 211 disposed inside the housing 221;

[0059] The lead 24 includes a second elastic piece 241 disposed inside the inner shell 231;

[0060] The first elastic piece 211 and the second elastic piece 241 are both hinged on the positioning shaft 25 .

[0061] Furthermore, the housing 221 includes a first clamping portion 2211 and a first docking portion 2212 protruding from the front end of the first clamping portion 2211;

[0062] The inner shell 231 includes a second clamping portion 2311 and a second docking portion 2312 protruding from a front end of the second clamping portion 2311 .

[0063] Furthermore, a spacer M is provided between the first elastic pieces 211;

[0064] The first clamping portion 2211 and the second clamping portion 2311 are fixedly connected by screws N respectively.

[0065] In this embodiment, the docking unit 2 can be used for connecting the thermistor 15 and can also be used to connect all the extended components of the electric energy meter.

[0066] Preferably, the female connector 22 and the male connector 23 are each composed of a housing chamber formed by two sets of outer shells 221 and two sets of inner shells 231. The outer shell 221 is composed of a first clamping portion 2211 and a first docking portion 2212 protruding from the front end of the first clamping portion 2211; the inner shell 231 is composed of a second clamping portion 2311 and a second docking portion 2312 protruding from the front end of the second clamping portion 2311. The first clamping portion 2211 and the second clamping portion 2311 are both fastened together through two upper and lower groups and tightly connected together using screws N. In addition, the lead pin 21 is constrained by the clamping action of the first clamping portion, and the lead 24 is also constrained by the clamping action of the second clamping portion 2311.

[0067] Next, the ends of the lead pins 21 are connected to the first spring clips 211, while the ends of the leads 24 are connected to the second spring clips 241. The first spring clips 211 are located inside the first docking portion 2212, while the second spring clips 241 are located outside. A set of spacers M made of insulating material are positioned between the first spring clips 211. When the second spring clips 241 are subjected to inward pressure, they move toward the first spring clips 211, achieving the connection.

[0068] The first docking portion 2212 and the second docking portion 2312 are both in an arc shape, so that the positioning shaft 25 passing through them can achieve relative rotation therebetween.

[0069] When in use, first fix the lead pin 21 to the pin 13 of the printed circuit board 11 by soldering, and then connect the connection end of the component that needs to be expanded to the end of the lead 24. The operation is simple and quick, which greatly improves work efficiency.

[0070] In summary, the docking unit 2 in this embodiment can not only be used to connect the thermistor 15, but also meet the connection requirements of all expanded components of the electricity meter, greatly improving the versatility and practicality of the docking unit 2. In addition, the arc-shaped design of the first docking portion 2212 and the second docking portion 2312 allows the positioning shaft 25 to be interposed therebetween, enabling relative rotation between the female connector 22 and the male connector 23, further improving the flexibility and adaptability of the connection and reducing the need for wiring inside the electricity meter.

[0071] Reference Figures 4 to 6 In some embodiments, the trigger assembly 222 includes a limit ring 2221 that is clamped on the inner side of the first docking portion 2212, a plurality of limit blocks 2222 arranged in a circular array at the end of the limit ring 2221, a first elastic member 2223 arranged on the inner side of the limit block 2222, a downward pressing member 2224 arranged at the end of the first elastic member 2223, and a second elastic member 2225 arranged on the inner side of the downward pressing member 2224.

[0072] In this embodiment, the trigger component 222 can effectively control the connection between the first elastic piece 211 and the second elastic piece 241 , thereby achieving current flow between the lead pin 21 and the lead 24 .

[0073] Preferably, the trigger assembly 222 is disposed at the axis of the first docking portion 2212 and the second docking portion 2312 so as not to hinder the rotation between the first docking portion 2212 and the second docking portion 2312. The limiting ring 2221 is clamped to the bottom of the first docking portion 2212 via a notch, and the limiting blocks 2222 are fixedly arranged in a circular array on the limiting ring 2221. A group of first elastic members 2223 are fixedly clamped to the inner side of the limiting blocks 2222. The limiting blocks 2222, through their special contour, limit and compress the first elastic members 2223. The function of the first elastic members 2223 is to lift the second elastic piece 241 at the bottom until it fits against the bottom of the first elastic piece 211 at the bottom through the elastic potential energy released by compression.

[0074] Next, the pressing member 2224 is slidably mounted on the axis of the first docking portion 2212. A second elastic member 2225 is mounted between the pressing member 2224 and the second elastic piece 241 at the top. Pressing the pressing member 2224 downward compresses the second elastic member 2225 and the second elastic piece 241 at the top, causing the second elastic piece 241 to bend elastically and fit against the first elastic piece 211 at the top.

[0075] The downward compression process of the pressing member 2224 will cause the limit block 2222 to bend, unlocking the limit block 2222 to limit and compress the first elastic member 2223, so that the circuit connection between the first elastic piece 211 and the second elastic piece 241 can be achieved by pressing the pressing member 2224 on the outside, without hindering the rotational connection relationship between the first elastic piece 211 and the second elastic piece 241.

[0076] Furthermore, the limiting block 2222 includes a column 22221 and a wedge block 22222 provided on one side of the column 22221;

[0077] The wedge block 22222 includes a pressing surface Q for limiting the first elastic member 2223 , an inclined surface P for sliding dislocation, and an extrusion surface I for rebounding and pressing down the first elastic member 2223 .

[0078] Furthermore, the pressing member 2224 includes a pressing cap 22241, a disc 22242 protruding from the bottom of the pressing cap 22241, a pressing block 22243 protruding from the circumference of the disc 22242, a dislocation rod 22244 protruding from the circumference of the disc 22242, and a positioning block 22245 protruding from the circumference of the disc 22242.

[0079] The second docking portion 2312 includes a tooth pattern 23121 protruding from a wall surface thereof.

[0080] In this embodiment, Figure 5 and Figure 6 As shown, the pressing cap 22241 is slidably disposed through the axis of the first docking portion 2212. The bottom of the pressing cap 22241 is formed into a protruding disc 22242, which slides inside the inner side of the second docking portion 2312. The disc 22242 is provided with a pressing block 22243, a dislocation rod 22244, and a positioning block 22245. The end face of the pressing block 22243 contacts the end face of the second spring plate 241, while the end face of the dislocation rod 22244 is an inclined surface that slidably engages with the wedge 22222 of the limiting block 2222. The end face of the positioning block 22245 is a hook that snaps onto the threaded groove 23121 on the wall of the second docking portion 2312. The threaded groove 23121 is not arranged in a circle, so that the positioning block 22245 can be released from the bottom of the threaded groove 23121 by rotating the pressing cap 22241.

[0081] Better, such as Figure 6 As shown, the end face of the dislocation rod 22244 is an inclined surface, and the column 22221 is elastic, so that the dislocation rod 22244 can tilt the wedge block 22222 during the descent process, thereby releasing the wedge block 22222 from the contour of the downward pressure surface Q at the bottom position of one side and compressing the first elastic member 2223. The inclined surface P contacts the dislocation rod 22244.

[0082] In this embodiment, both the first elastic member 2223 and the second elastic member 2225 may be elastic.

[0083] When the pressing cap 22241 is pressed down, the pressing block 22243, the offset rod 22244, and the positioning block 22245 on the end surface of the disc 22242 all descend together, with the longer offset rod 22244 first contacting the inclined surface P on one side of the wedge block 22222. When the offset rod 22244 is further lowered, the offset rod 22244 and the inclined surface P cause the column 22221 to tilt, causing the part that originally limited and compressed the first elastic member 2223 to tilt. This causes the pressing surface Q to be unable to continue compressing the first elastic member 2223, and ultimately causes the first elastic member 2223 to lift the second elastic piece 241 at the bottom until it fits against the bottom of the first elastic piece 211 at the bottom. At the same time, the disc 22242 drives the pressing block 22243 to directly act on the second spring piece 241, elastically bending the second spring piece 241 to fit against the first spring piece 211 at the top, thereby establishing a circuit connection between the first spring piece 211 and the second spring piece 241. In addition, the positioning block 22245 also descends until it snaps onto the bottom of the tooth pattern 23121 on the wall of the second docking portion 2312, thereby achieving the lowering and fixing of the entire lower pressing member 2224.

[0084] When the circuit connection between the first elastic piece 211 and the second elastic piece 241 is released, the pressing cap 22241 can be rotated to dislocate the bottom positioning block 22245 originally snapped into the tooth pattern 23121, and the dislocation rod 22244 is dislocated from the inclined surface P. Under the reset action of the second elastic member 2225, the pressing cap 22241 is lifted, completing the reset. Secondly, when the dislocation rod 22244 is dislocated from the inclined surface P, the column 22221 elastically resets so that the extrusion surface I of the wedge block 22222 acts on the first elastic member 2223. Under the action of the inclined surface of the extrusion surface I, the first elastic member 2223 is compressed downward and finally snapped under the contour of the pressing surface Q, so that the pressing surface Q again limits and compresses the first elastic member 2223, providing a basis for the next movement.

[0085] In summary, the design of the trigger assembly 222 effectively controls the connection between the first spring 211 and the second spring 241 without affecting the rotational adjustment of the female connector 22 and the male connector 23, thereby ensuring smooth circuit flow between the lead pin 21 and the lead 24. This design not only improves the reliability and stability of the circuit but also optimizes the overall performance of the device.

[0086] In one embodiment provided in the present application, the current terminal is extended, and a V-shaped groove is milled between the extended portion and the original portion;

[0087] A screw hole is provided in the extended portion of the current terminal;

[0088] Use a screw to fix one end of the wire thermistor to the screw hole of the extended part of the current terminal, where one end of the wire thermistor is the wire nose and the other end is the terminal head;

[0089] After the relay is soldered to the current terminals, the wire thermistor terminals are soldered to the printed circuit board inside the energy meter.

[0090] In this embodiment, the current terminal is first extended, and a V-shaped groove is precisely milled between the extended portion and the original portion. This V-shaped groove design not only helps reduce the risk of solder flowing into the extended portion during soldering, but also provides a more stable foundation for subsequent fixing of the thermistor.

[0091] Next, a screw hole is opened in the extension of the current terminal. This design allows the use of standard screws to achieve quick and stable installation of the thermistor, greatly improving assembly efficiency and stability, and reducing the risk of damage to the thermistor caused by high-temperature welding.

[0092] Then, use a screw to firmly fix one end of the wire thermistor (i.e., the wire nose) to the screw hole on the extended portion of the current terminal. The other end of this wire thermistor is the terminal head, ready to be connected to the printed circuit board inside the energy meter.

[0093] Finally, after the relay and current terminals are soldered together, the thermistor's terminals are secured to the meter's printed circuit board via soldering. This arrangement effectively protects the thermistor from damage even under high-temperature soldering conditions, thus preventing component failure due to overheating.

[0094] In summary, this approach also resolves the signal terminal position conflicts caused by the fixed position of thermistors in traditional designs, as well as the wiring difficulties caused by complex wiring. This innovative design not only significantly improves the assembly flexibility and maintenance ease of the energy meter, but also significantly enhances the overall reliability and service life of the device.

[0095] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A workpiece for mounting a thermistor of a terminal temperature measuring ammeter, characterized in that: include, A basic unit (1) comprises a printed circuit board (11), a relay (12) arranged on the printed circuit board (11), a plurality of groups of pins (13) arranged on one side of the printed circuit board (11), a plurality of groups of terminals (14) arranged on one side of the pins (13), and a thermistor (15) on the upper end of the terminal (14); The adapter unit (2) comprises a lead pin (21) connected to the plug pin (13), a female connector (22) provided at one end of the lead pin (21), a sub-connector (23) provided at one side of the female connector (22), and a lead wire (24) provided inside the sub-connector (23), wherein the lead wire (24) is connected to the thermistor (15); The sub-head (23) can be rotated relative to the female head (22), thereby adjusting the docking angle between the thermistor (15) and the terminal (14).

2. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 1, characterized in that: The thermistor (15) comprises a wire nose (151) riveted to the terminal (14) at one end, and a connector (152) connected to the pin (13) at the other end; The connector (152) is connected to the lead (24).

3. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 2, characterized in that: The female connector (22) comprises a housing (221) clamped to both sides of the lead pin (21), and a trigger component (222) arranged at the axis of the housing (221); The sub-head (23) comprises an inner shell (231) clamped to both sides of the lead (24); the inner shell (231) and the outer shell (221) are both hinged to the axis of the trigger component (222).

4. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 3, characterized in that: The lead pin (21) includes a first elastic piece (211) arranged on the inner side of the housing (221); The lead (24) includes a second elastic piece (241) arranged inside the inner shell (231); The first elastic piece (211) and the second elastic piece (241) are both hinged on the positioning shaft (25).

5. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 4, characterized in that: The housing (221) comprises a first clamping portion (2211) and a first docking portion (2212) protruding from the front end of the first clamping portion (2211); The inner shell (231) comprises a second clamping portion (2311) and a second docking portion (2312) protruding from the front end of the second clamping portion (2311).

6. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 5, characterized in that: A spacer (M) is provided between the first elastic pieces (211); The first clamping portion (2211) and the second clamping portion (2311) are fixedly connected by screws (N).

7. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 6, characterized in that: The trigger assembly (222) comprises a limiting ring (2221) clamped on the inner side of the first docking portion (2212), a plurality of limiting blocks (2222) arranged in a circumferential array at the end of the limiting ring (2221), a first elastic member (2223) arranged on the inner side of the limiting block (2222), a pressing member (2224) arranged at the end of the first elastic member (2223), and a second elastic member (2225) arranged on the inner side of the pressing member (2224).

8. The terminal temperature measuring ammeter thermistor mounting workpiece according to claim 7, characterized in that: The limiting block (2222) includes a column (22221) and a wedge block (22222) arranged on one side of the column (22221); The wedge block (22222) includes a downward pressing surface (Q) for limiting the first elastic member (2223), an inclined surface (P) for sliding dislocation, and an extrusion surface (I) for rebounding and pressing down the first elastic member (2223).

9. The workpiece for mounting the thermistor of a terminal temperature measuring ammeter according to claim 8, characterized in that: The pressing member (2224) includes a pressing cap (22241), a disc (22242) protruding from the bottom of the pressing cap (22241), a pressing block (22243) protruding from the circumference of the disc (22242), a dislocation rod (22244) protruding from the circumference of the disc (22242), and a positioning block (22245) protruding from the circumference of the disc (22242). The second docking portion (2312) includes a tooth pattern (23121) protruding from a wall surface thereof.

10. A method for installing a thermistor in a terminal temperature measuring meter, characterized in that: The terminal temperature measuring ammeter thermistor mounting workpiece according to any one of claims 1 to 9 comprises the following steps: Extend the current terminal and mill a V-shaped groove between the extended part and the original part; A screw hole is provided in the extension portion of the current terminal; Fix one end of the wire thermistor to the screw hole of the current terminal extension using a screw, wherein one end of the wire thermistor is a wire nose and the other end is a terminal head; After the relay is welded to the current terminal, the terminal of the linear thermistor is welded to the printed circuit board in the electric energy meter.

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