TWM669062U - Flexible clamping wire terminal structure - Google Patents

Abstract

A terminal structure for elastically clamping a wire comprises: a terminal assembly and a terminal seat for accommodating the terminal assembly; the terminal assembly has a terminal and a metal spring, the terminal has a base, a hollow accommodating portion is provided on the base, at least one pin portion is provided at a local edge bend on the outer peripheral side of the base; the middle section of the metal spring is provided with an arc portion, and the metal spring is connected to the inner edge of the accommodating portion with one end. The other end of the metal spring sheet obliquely extends into the receiving portion to form a clamping end with active elasticity. The other peripheral sides of the receiving portion other than the joint portion with the metal spring sheet are formed with a limiting portion extending in the extending direction of the clamping end and perpendicular to the base, so that the clamping end cooperates with the inner edge of the receiving portion to form a mechanism that can elastically clamp the wire, and the limiting portion can limit and stably guide the clamping end to clamp the wire.

Description

Flexible clamping wire terminal structure

This invention relates to a terminal structure for elastically clamping wires, and in particular to a terminal structure that is simple in structure, saves materials, can effectively reduce the overall volume, and can produce a stable and movable clamping wire.

As shown in FIG. 1 and FIG. 2, a conventional terminal device with a flexible wire clamping function is mainly composed of a plurality of mutually connected terminal units C and a side cover; wherein the terminal unit C includes: a terminal assembly 3 and a terminal seat 4, wherein the terminal assembly 3 is composed of a terminal 31 and a metal spring 32, wherein a vertical stopper 311 is provided in the middle of the terminal 31, and the stopper 311 is provided with a The end of the stopper 311 is connected to a vertical bent leg portion 313 via a connecting bent portion 312, and the two sides of the other end of the stopper 311 are connected to a positioning portion 315 bent and extended toward the leg portion 313 via a bent side limit portion 314, so that a hollow receiving space 317 can be formed between the two side limit portions 314, and the positioning portion 315 is provided with a protrusion 316 on one side facing the receiving space 317.

The metal spring 32 is disposed in the receiving space 317. A curved portion 321 is provided in the middle of the metal spring 32. One end of the metal spring 32 forms a positioned end 322. The positioned end 322 is provided with a hook portion 324 that can be hooked on the protrusion 316 and combined with the positioning portion 315. The other end of the metal spring 32 extends obliquely toward the stop portion 311 to form a clamping end 323 with active elasticity, so that the clamping end 323 can cooperate with the inner edge of the stop portion 311 to form a structure that can clamp the wire.

The terminal block 4 is provided with a receiving space 41 inside which the terminal assembly 3 can be accommodated. The receiving space 41 is connected to the outside through at least a groove 42, a wire insertion hole 43 and an operating hole 44. The groove 42 is provided for the pin portion 313 of the terminal 31 to protrude outward, and the wire insertion hole 43 corresponds to the outer edge of the clamping end 323 of the metal spring 32, so that the wire can be inserted between the clamping end 323 and the stopper 311 to form clamping and positioning. The operating hole 44 is provided for a tool to be inserted to release the clamping of the clamping end 323 on the wire.

However, the above structure has the following disadvantages in practical application:

A. Since the terminal 31 includes: a positioning portion 315, a side limit portion 314, a stop portion 311, a connecting bent portion 312 and a pin portion 313 which are connected to each other, not only is the structure more complicated, but the overall length is also longer, which consumes more materials; at the same time, a larger area of waste material is generated when forming the receiving space 317 (hollow portion) between the two side limit portions 314, making it difficult to reduce the overall material and manufacturing costs.

B. Since the overall volume of the terminal 31 after molding is relatively large, the terminal seat 4 that accommodates the terminal 31 also needs to maintain a relatively large volume, which is not conducive to the development of product miniaturization.

C. Since the two strip-shaped side limit portions 314 can only cross and form point contact with the two sides of the clamping end 323 of the metal spring 32, it is impossible to form a relatively large section of stable guidance and lateral limit for the movement of the clamping end 323, which easily causes the metal spring 32 to deviate and tilt during the movement; therefore, the metal spring 32 must use the peripheral part of the accommodating space 41 of the terminal seat 4 (plastic material) to limit the movement of the metal spring 32 during the movement, which easily causes wear and damage.

D. Due to the shape and structure limitation of the stop portion 311 in the terminal 31, the pin portion 313 can only be arranged on a side away from the stop portion 311, and each terminal seat 4 also cooperates to arrange the groove 42 on a single side of the accommodating space 41 to allow the stop portion 311 to pass through and protrude outward. In order to meet the insulation requirements between each pin portion 313, a sufficient distance must be maintained between each pin portion 313, making it difficult for each terminal unit C to meet the trend of small and sophisticated products.

In view of the above-mentioned shortcomings of conventional terminal devices in practical applications, the creator has studied ways to improve these shortcomings, and finally produced this creation.

The main purpose of the invention is to provide a terminal structure for elastically clamping a wire, comprising: a terminal assembly and a terminal seat for accommodating the terminal assembly; the terminal assembly has a terminal and a metal spring, the terminal has a base, a hollow accommodating portion is provided on the base, and at least one pin portion is provided at a local edge bend on the outer peripheral side of the base; the middle section of the metal spring is provided with an arc portion, and the metal spring is connected to the inner edge of the accommodating portion with one end, and the other peripheral sides of the accommodating portion other than the connection portion of the metal spring are formed with an extension extending in the direction of the clamping end. The metal spring extends and is perpendicular to the limiting portion of the base, and the other end of the metal spring obliquely extends into the accommodating portion to form a clamping end with active elasticity, so that the clamping end cooperates with the inner edge of the accommodating portion to form a mechanism that can elastically clamp the wire; the limiting portion and the two sides of the clamping end form a relatively large section of wire contact, which can effectively limit and stably guide the clamping end to clamp the wire, not only can the metal spring be prevented from being skewed and loosened during the activity process, but also the abnormal contact and friction between the metal spring and the terminal seat can be reduced, thereby reducing the wear and damage of the terminal seat.

Another purpose of the present invention is to provide a terminal structure for elastically clamping wires, wherein the terminal of the terminal assembly has a shorter extension length and a simpler shape structure, which can not only save material consumption and reduce production costs, but also reduce the volume of the terminal assembly and the terminal base; at the same time, the structural changes of the terminal having a single pin portion or a double pin portion can effectively enhance the overall application range of the terminal assembly.

Another purpose of the present invention is to provide a terminal structure for elastically clamping wires, wherein the terminal seat is provided with a accommodating space for accommodating the terminal assembly, and the accommodating space has at least a first and a second groove connected to the outside and a wire insertion hole and an operating hole; the at least one pin portion extends outward from at least one of the first and the second grooves; the wire insertion hole allows a wire to be inserted and extends to a position corresponding to the outer edge of the clamping end and the interior of the accommodating portion, and the operating hole allows a tool to be inserted and extends to a position corresponding to the clamping end and the curved portion, so that the terminal seat forms an insulating protection structure that is easy to operate and use on the outer peripheral side of the terminal assembly.

In order to provide a more detailed understanding of the above-mentioned purpose, efficacy and features of this creation, the following illustrations are provided as follows:

Please refer to Figures 3 and 4, it can be seen that the structure of the first embodiment of the present invention includes: a first terminal unit A1 composed of a terminal assembly 1 and a terminal seat 2; wherein the terminal assembly 1 has a terminal 11 and a metal spring 12, the terminal 11 has a base 110, a hollow receiving portion 111 is provided on the base 110, a positioning portion 112 (which can be a groove) is provided on one side of the receiving portion 111, and a partial edge of the outer peripheral side of the base 110 is bent to extend at least one pin portion.

In this embodiment, the base 110 is provided with two opposite first end portions 1111, a second end portion 1112 and two opposite first side portions 1113, a second side portion 1114 on the outer peripheral side of the receiving portion 111, the pin portion is arranged near the outer side of the first end portion 1111 and forms a first pin 114, and a first positioning end portion 116 with a larger width is provided between the first pin 114 and the first end portion 1111.

The metal spring sheet 12 has a curved portion 121 in the middle, and a positioning portion 122 is provided at one end of the metal spring sheet 12, which can be combined with the positioning portion 112 to form a positioning, so that the other end of the metal spring sheet 12 extends obliquely into the receiving portion 111 toward a side away from the positioning portion 112 to form a clamping end 123 with active elasticity. The receiving portion 111 has the positioning portion 112. The other edges except the base 110 are respectively provided with a limiting portion 113 extending in the extending direction of the clamping end 123, and the limiting portion 113 is formed by the edges of the receiving portion 111 extending vertically from the base 110, so that the clamping end 123 can cooperate with the inner edge of the receiving portion 111 (a side away from the positioning portion 112) and the limiting portion 113 to form an elastic clamping mechanism.

The terminal block 2 may have a recessed receiving space 21 for receiving the terminal assembly 1 on one side surface. A positioning column 213 is provided inside the receiving space 21 to block the curved portion 121 of the metal spring 12 to form a positioning. The receiving space 21 has a first groove 211, a second groove 212, a wire insertion hole 22, and an operation hole 23 connected to the outside. The first groove 211 and the second groove 212 are respectively connected to the first groove 211 and the second groove 212. The first end portion 1111 and the outer end portion 1112 of the accommodating portion 111 are connected so that the first pin 114 can extend to the outside of the terminal block 2 through the first groove 211, and the wire insertion hole 22 extends to between the outer edge of the clamping end 123 corresponding to the metal spring 12 and the inside of the accommodating portion 111, and the operating hole 23 extends to the position between the clamping end 123 and the curved portion 121.

In a feasible embodiment, the terminal block 2 is provided with a plurality of coupling parts 24 on one side facing the accommodating space 21, and a coupled part 25 corresponding to each of the coupling parts 24 is provided on a side away from the accommodating space 21; the coupling parts 24 of different terminal blocks 2 are assembled with the coupled parts 25 of another terminal block 2, and a coupled part 201 corresponding to the coupling part 24 is provided on a side cover 20. The side cover 20 can be assembled with the terminal block 2 at the edge and cover the accommodating space 21, so as to be combined into a first terminal device B1 formed by combining a plurality of identical first terminal units A1.

Please refer to Figures 5 and 6. It can be seen that when the first embodiment of the present invention is actually applied, when a wire D is inserted from the wire insertion hole 22, it can be inserted into the space between the clamping end 123 and the edge of the receiving portion 111. The clamping end 123 cooperates with the inner edge of the receiving portion 111 and the limitation of the limiting portion 113 to clamp and position the wire D. If a tool E is inserted into the operating hole 23, it can be pushed against the position between the clamping end 123 and the curved portion 121 to disengage the clamping end 123 from the wire D, so that the wire D can be taken out.

Compared with the terminal 31 of the conventional terminal assembly 3, the terminal 11 only has the main structures such as the receiving portion 111 and the first pin 114 (pin portion), which not only greatly reduces the overall height but also has a simpler structure, thereby saving materials and production costs; at the same time, the limiting portion 113 formed on the edge of the receiving portion 111 can effectively reduce waste generated during the production process, thereby improving the overall economic benefits; Furthermore, by utilizing the limiting portion 113 and the sides of the clamping end 123 to form a line contact, in addition to forming a relatively large section of stable guidance and lateral limitation for the movement of the clamping end 123 to effectively prevent the metal spring 12 from being offset and skewed during the movement, it can also reduce abnormal contact between the periphery of the accommodating space 21 and the metal spring 12, causing abnormal wear and damage to the terminal block 2.

Please refer to Figure 7, it can be seen that the structure of the second embodiment of the present invention includes: a terminal assembly 1 and a terminal seat 2 that are the same as the aforementioned first embodiment; the difference is only that: an operating key 231 is provided in the operating hole 23 of the terminal seat 2, and one end of the operating key 231 extends toward between the clamping end 123 and the curved portion 121; in actual application, the user can directly press the operating key 231 with a finger (without the need for tool E) to disengage the clamping end 123 from the wire D, so that the wire D can be taken out; in addition, the other structures and mutual combination relationships of the terminal assembly 1 and the terminal seat 2 are the same as those of the aforementioned first embodiment, and no further details are given here.

Please refer to Figures 8 and 9, it can be seen that the structure of the third embodiment of the present invention includes: a terminal device B2 formed by a plurality of second terminal units A2 and a plurality of first terminal units A1 that are the same as the aforementioned first embodiment, which are interspersed and combined at intervals; wherein the second terminal unit A2 has a terminal assembly 10 and a terminal seat 2 that is the same as the aforementioned first embodiment; the terminal assembly 10 has a terminal 101 and a metal spring 12 that is the same as the aforementioned first embodiment, and the terminal 101 has a base 110, a receiving portion 111, a positioning portion 112, a limiting portion 113 and a first end portion 1111, a second end portion 1112, a first side portion 1113, a second side portion 1114 and other structures that are the same as the terminal 11 of the aforementioned first embodiment, and at least one pin portion is extended from a local edge bend on the outer peripheral side of the base 110.

In this embodiment, the pin portion is disposed near the outer side of the second end portion 1112 and forms a second pin 115 ; and a second positioning end portion 117 with a larger width is disposed between the second pin 115 and the second end portion 1112 .

The metal spring 12 is positioned by combining the positioned portion 122 with the positioning portion 112, so that the clamping end 123 of the metal spring 12 extends obliquely toward a side away from the positioning portion 112, and the clamping end 123 can cooperate with the inner edge of the receiving portion 111 (a side away from the positioning portion 112) and the limiting portion 113 to form an elastic clamping mechanism.

When the terminal assembly 10 is assembled in the accommodating space 21 of the terminal base 2, the second pin 115 can be extended from the second groove 212 of the terminal base 2 to the outside of the terminal base 2; and the wire D is inserted into the wire insertion hole 22, and the clamping end 123 cooperates with the inner edge of the accommodating portion 111 and the limitation of the limiting portion 113 to form an elastic clamp on the wire D.

In actual application, since the first pin 114 of the first terminal unit A1 extends outward from the first groove 211 of the terminal base 2, and the second pin 115 of the second terminal unit A2 extends outward from the second groove 212 of the terminal base 2, in the terminal device B2, there is a larger distance between the first pin 114 and the second pin 115 exposed outside each terminal base 2 and adjacent to each other.

Please refer to Figure 10, it can be seen that the structure of the fourth embodiment of the present invention includes: a terminal assembly 1a, and a terminal seat (not shown) for accommodating the terminal assembly 1a; wherein the terminal assembly 1a has a terminal 11a, and a metal spring 12 that is the same as the first embodiment described above, and the terminal 11a has the same base 110, accommodating portion 111, positioning portion 112, limiting portion 113 and first end 1111, second end 1112, first side 1113, second side 1114 and other structures as the terminal 11 of the first embodiment described above, and at least one pin portion is extended from the local edge bend on the outer peripheral side of the base 110.

In the present embodiment, the pin portion is disposed near the outer side of the first side portion 1113 and forms a first pin 114a, and a first positioning end portion 116a with a larger width is disposed between the first pin 114a and the first end portion 1111; in actual application, the pin portion may also be disposed near the outer side of the second side portion 1114 and form a second pin (not shown) and a second positioning end portion (not shown), respectively, so as to achieve different changes in structural design and application.

Except for the above differences, the mutual combination relationship between the terminal 11a and the metal spring 12 in this embodiment and the effect achieved are the same as those in the first embodiment, and will not be elaborated here.

Please refer to Figures 11 and 12, it can be seen that the structure of the fifth embodiment of the present invention includes: a third terminal unit A3 composed of a terminal assembly 1c and a terminal seat 2 that is the same as the first embodiment; wherein the terminal assembly 1c has a terminal 11c and a metal spring 12 that is the same as the first embodiment, and the terminal 11c has the same base 110, accommodating portion 111, positioning portion 112, limiting portion 113 and first end 1111, second end 1112, first side 1113, second side 1114 and other structures as the terminal 11 of the first embodiment, and two pin portions are bent and extended at the local edges of the outer peripheral side of the base 110.

In this embodiment, the two pin portions are respectively arranged near the outer sides of the first end portion 1111 and the second end portion 1112 to form a first pin 114 and a second pin 115; and a first positioning end portion 116 with a larger width is provided between the first pin 114 and the first end portion 1111, and a second positioning end portion 117 with a larger width is provided between the second pin 115 and the second end portion 1112.

The metal spring 12 is positioned by combining the positioned portion 122 with the positioning portion 112, so that the clamping end 123 of the metal spring 12 extends obliquely toward a side away from the positioning portion 112, and the clamping end 123 can cooperate with the inner edge of the receiving portion 111 (a side away from the positioning portion 112) and the limiting portion 113 to form an elastic clamping mechanism.

When the terminal assembly 1a is assembled in the accommodating space 21 of the terminal seat 2, the first and second pins 114 and 115 can extend to the outside of the terminal seat 2 through the first and second grooves 211 and 212 respectively; and the wire insertion hole 22 extends to between the outer edge of the clamping end 123 corresponding to the metal spring 12 and the interior of the accommodating portion (111), and the operating hole 23 extends to the position between the clamping end 123 and the curved portion 121.

In a feasible embodiment, the terminal block 2 is provided with a plurality of coupling parts 24 on one side facing the accommodating space 21, and a coupled part 25 corresponding to each of the coupling parts 24 is provided on a side away from the accommodating space 21; the coupling parts 24 of different terminal blocks 2 are assembled with the coupled parts 25 of another terminal block 2, and a coupled part 201 corresponding to the coupling part 24 is provided on a side cover 20. The side cover 20 can be assembled with the terminal block 2 at the edge and cover the accommodating space 21, so as to be combined into a third terminal device B3 formed by combining a plurality of identical third terminal units A3.

Please refer to Figures 13 and 14. It can be seen that when the fifth embodiment of the present invention is actually applied, when a wire D is inserted from the wire insertion hole 22, it can be inserted into the space between the clamping end 123 and the edge of the receiving portion 111. The clamping end 123 cooperates with the inner edge of the receiving portion 111 and the restrictions of the side portion 113 to clamp and position the wire D. If a tool E is inserted into the operating hole 23, it can be pushed against the position between the clamping end 123 and the curved portion 121 to disengage the clamping end 123 from the wire D, so that the wire D can be taken out.

In practical application, the terminal 11c of the present invention has the first and second pins 114 and 115 at the same time, which can effectively divert the current introduced by the wire D, so that the third terminal unit A3 (terminal assembly 1c) as a whole has a higher current load bearing capacity to meet the requirements of higher working current specifications.

Please refer to Figure 15, it can be seen that the structure of the sixth embodiment of the present invention includes: a terminal assembly 1c and a terminal seat 2 that are the same as the aforementioned fifth embodiment; the difference is only that: an operation key 231 is provided in the operation hole 23 of the terminal seat 2, and one end of the operation key 231 extends toward between the clamping end 123 and the curved portion 121; in actual application, the user can directly press the operation key 231 with a finger (without the need for tool E) to disengage the clamping end 123 from the wire D, so that the wire D can be taken out; in addition, the other structures and mutual combination relationships of the terminal assembly 1c and the terminal seat 2 are the same as the aforementioned fifth embodiment, and no further details are given here.

Please refer to Figure 16, it can be seen that the structure of the seventh embodiment of the present invention includes: a terminal assembly 1d, and a terminal seat (not shown) for accommodating the terminal assembly 1d; wherein the terminal assembly 1d has a terminal 11d, and a metal spring 12 that is the same as the first embodiment described above, and the terminal 11d has the same base 110, accommodating portion 111, positioning portion 112, limiting portion 113 and first end portion 1111, second end portion 1112, first side portion 1113, second side portion 1114 and other structures as the terminal 11 of the first embodiment described above, and two pin portions are extended from the local edge bend on the outer peripheral side of the base 110.

In the present embodiment, the two pins are respectively arranged at positions of the first side portion 1113 close to the outer sides of the two ends, and form a first pin 114d and a second pin 115d, and a first positioning end portion 116d with a larger width is provided between the first pin 114d and the first side portion 1113, and a second positioning end portion 117d with a larger width is provided between the second pin 115d and the first side portion 1113; in actual application, the two pins can also be respectively arranged at positions of the second side portion 1114 close to the outer sides of the two ends, so as to achieve different changes in structural design and application.

Except for the above differences, the mutual combination relationship between the terminal 11d and the metal spring 12 in this embodiment and the effect achieved are the same as those in the fifth embodiment, and will not be elaborated here.

In summary, the terminal structure of the present invention for elastically clamping the wire can achieve the effect of simple structure, material saving and stable and movable clamping of the wire, which is indeed a novel and progressive creation, and a new patent application is filed in accordance with the law; however, the above description is only an illustration of the best embodiment of the present invention, and any changes, modifications, alterations or equivalent replacements based on the technical means and scope of the present invention should also fall within the scope of the patent application of the present invention.

1,10,1a,1c,1d,3: terminal assembly 11,101,11a,11c,11d,31: terminal 110: base 111: receiving portion 1111: first end 1112: second end 1113: first side 1114: second side 112,315: positioning portion 113: limiting portion 114,114a,114d: first pin 115,115d: second pin 116,116a,116d: first positioning end 117,117d: second positioning end 12,32: metal spring 121,321: curved portion 122: positioned portion 123,323: clamping end 2,4: Terminal seat 20: Side cover 201: Connected part 21,41: Accommodating space 211: First slot 212: Second slot 213: Positioning column 22,43: Wire jack 23,44: Operation hole 231: Operation key 24: Connecting part 25: Connected part 311: Stopping part 312: Connecting bending part 313: Pin part 314: Side limit part 316: Bump 317: Accommodating space 322: Positioned end 324: Hook part 42: Slot A1: First terminal unit A2: Second terminal unit A3: Third terminal unit B1: First terminal device B2: Second terminal device B3: Third terminal device C: Terminal unit D: Wire E: Tool

[Figure 1] is a three-dimensional structural exploded view of a conventional terminal unit with a function of elastically clamping a wire. [Figure 2] is a three-dimensional structural exploded view of the terminal assembly of Figure 1. [Figure 3] is a three-dimensional structural exploded view of the first embodiment of the present invention. [Figure 4] is a side view of the first embodiment of the present invention. [Figure 5] is a schematic diagram of the application of the first embodiment of the present invention (I); it discloses the state in which the wire is inserted into the wire jack and is fixed by the clamping end of the metal spring. [Figure 6] is a schematic diagram of the application of the first embodiment of the present invention (II); it discloses the state in which a tool is inserted into the operating hole to press the metal spring so that the clamping end is separated from the wire. [Figure 7] is a schematic diagram of the structure and application of the second embodiment of the present invention. [Figure 8] is a three-dimensional structural decomposition diagram of the third embodiment of the present invention. [Figure 9] is a schematic diagram of the application of the third embodiment of the present invention; it discloses the state that the wire is inserted into the wire jack and is fixed by the clamping end of the metal spring. [Figure 10] is a structural schematic diagram of the fourth embodiment of the present invention. [Figure 11] is a three-dimensional structural decomposition diagram of the fifth embodiment of the present invention. [Figure 12] is a side view of the fifth embodiment of the present invention. [Figure 13] is a schematic diagram of the application of the fifth embodiment of the present invention (I); it discloses the state that the wire is inserted into the wire jack and is fixed by the clamping end of the metal spring. [Figure 14] is a schematic diagram of the application of the fifth embodiment of the present invention (II); it discloses the state of inserting a tool into the operating hole to press the metal spring sheet so that the clamping end is separated from the wire. [Figure 15] is a schematic diagram of the structure and application of the sixth embodiment of the present invention. [Figure 16] is a schematic diagram of the structure of the seventh embodiment of the present invention.

1,10:Terminal assembly

11,101:Terminals

110: Base

111: Containment Department

1111: First end

1112: Second end

1113: First side

1114: Second side

112: Positioning unit

113: Limiting part

114: First contact

115: Second pin

116: First positioning end

117: Second positioning end

12: Metal Shrapnel

121: curved part

122: Positioned part

123: Card terminal

2: Terminal block

20: Side cover

201: Jointed part

21: Storage space

211: First channel

212: Second channel

213: Positioning column

22: Wire jack

23: Operation hole

24: Junction

25: Combined part

A1: First terminal unit

A2: Second terminal unit

B2: Second terminal device

Claims (38)

A terminal structure for elastically clamping a wire comprises: at least one terminal assembly (1, 10, 1a, 1c, 1d); wherein the terminal assembly (1, 10, 1a, 1c, 1d ) has a terminal (11, 101, 11a, 11c, 11d) and a metal spring (12), the terminal (11, 101, 11a, 11c, 11d) having a base (110), a hollow receiving portion (111) being provided on the base (110), a positioning portion (112) being provided on one side of the receiving portion (111), a partial edge of the outer peripheral side of the base (110) being bent and extending to form at least one pin portion; a curved portion (121) being provided in the middle section of the metal spring (12), and a portion being provided at one end of the metal spring (12) being combined with the positioning portion (112) The metal spring sheet (12) has a positioned portion (122), the other end of the metal spring sheet (12) extends obliquely into the receiving portion (111) to form a clamping end (123) with active elasticity, and the receiving portion (111) is provided with a limiting portion (113) extending in the extending direction of the clamping end (123) at other edges other than the positioning portion (112), so that the clamping end (123) can cooperate with the inner edge of the receiving portion (111) at one end of the metal spring sheet (12) not combined with the limiting portion (113), thereby limiting the clamping end (123) to form a mechanism for forming an elastic clamping interval. The terminal structure for elastically clamping a wire as described in claim 1, wherein the limiting portion (113) is formed by vertically extending the edge of the receiving portion (111) and the base (110). A terminal structure for elastically clamping a conductor as described in claim 1 or 2, wherein the base (110) of the terminal (11) is provided with two opposite first ends (1111), a second end (1112) and two opposite first sides (1113), a second side (1114) on the outer peripheral side, and a pin portion is extended from the outer peripheral edge of the base (110), and the pin portion is arranged near the outer edge of the first end (1111) to form a first pin (114). A terminal structure for elastically clamping a conductor as described in claim 1 or 2, wherein the outer peripheral side of the base (110) of the terminal (101) is respectively provided with two opposite first ends (1111), a second end (1112) and two opposite first sides (1113), a second side (1114), and the outer peripheral edge of the base (110) is bent to extend a pin portion, which is arranged near the outer edge of the second end (1112) and forms a second pin (115). A terminal structure for elastically clamping a conductor as described in claim 1 or 2, wherein the outer peripheral side of the base (110) of the terminal (11a) is respectively provided with two opposite first ends (1111), a second end (1112) and two opposite first sides (1113), and a second side (1114); the outer peripheral edge of the base (110) is bent to extend a pin portion, and the pin portion is arranged near the outer edge of one of the first side (1113) and the second side (1114) to form a first pin (114a). A terminal structure for elastically clamping a conductor as described in claim 1 or 2, wherein the outer peripheral side of the base (110) of the terminal (11c) is respectively provided with two opposite first ends (1111), a second end (1112) and two opposite first sides (1113), a second side (1114), and the outer peripheral edge of the base (110) is bent to extend two pins, and the two pins are respectively arranged near the outer edges of the first end (1111) and the second end (1112) to form a first pin (114) and a second pin (115). A terminal structure for elastically clamping a conductor as described in claim 1 or 2, wherein the outer peripheral side of the base (110) of the terminal (11d) is respectively provided with two opposite first ends (1111), a second end (1112) and two opposite first sides (1113), and a second side (1114); the outer peripheral side edge of the base (110) is bent to extend two pins, and the two pins are arranged on the outer side edge of at least one of the first side (1113) and the second side (1114), and respectively form a first pin (114d) and a second pin (115d). A terminal structure for elastically clamping a wire as described in claim 3, wherein a first positioning end (116, 116a, 116d) is provided between the first pin (114, 114a, 114d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 5, wherein a first positioning end (116, 116a, 116d) is provided between the first pin (114, 114a, 114d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 6, wherein a first positioning end (116, 116a, 116d) is provided between the first pin (114, 114a, 114d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 7, wherein a first positioning end (116, 116a, 116d) is provided between the first pin (114, 114a, 114d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 4, wherein a second positioning end (117, 117d) is provided between the second pin (115, 115d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 6, wherein a second positioning end (117, 117d) is provided between the second pin (115, 115d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping a wire as described in claim 7, wherein a second positioning end (117, 117d) is provided between the second pin (115, 115d) and the outer peripheral edge of the base (110). A terminal structure for elastically clamping wires as described in claim 1 or 2, wherein the terminal assembly (1, 1a, 10, 1c, 1d) is combined with a terminal seat (2); the terminal seat (2) has a recessed accommodating space (21) on one side surface for accommodating the terminal assembly (1, 1a, 10, 1c, 1d), a positioning column (213) is provided inside the accommodating space (21) and can stop at the curved portion (121) of the metal spring (12) to prevent the metal spring (12) from being displaced when moving, a first groove (211) and a second groove (212) connected to the outside are provided around the accommodating space (21), and the pin portion extends to the outside of the terminal seat (2) through at least one of the first groove (211) and the second groove (212). A terminal structure for elastically clamping a wire as described in claim 3, wherein the terminal assembly (1) and a terminal seat (2) are combined into a first terminal unit (A1); the terminal seat (2) has a recessed accommodating space (21) on one side surface for accommodating the terminal assembly (1), a positioning column (213) is provided inside the accommodating space (21) and can stop at the curved portion (121) of the metal spring (12) to prevent the metal spring (12) from being displaced when moving, a first groove (211) and a second groove (212) are provided around the accommodating space (21) and are connected to the outside, and the first pin portion (114) of the terminal assembly (1) extends to the outside of the terminal seat (2) through the first groove (211). A terminal structure for elastically clamping wires as described in claim 4, wherein the terminal assembly (10) and a terminal seat (2) are combined into a second terminal unit (A2); the terminal seat (2) has a recessed accommodating space (21) on one side surface for accommodating the terminal assembly (10), a positioning column (213) is provided inside the accommodating space (21) and can stop at the curved portion (121) of the metal spring (12) to prevent the metal spring (12) from being displaced when moving, a first groove (211) and a second groove (212) connected to the outside are provided around the accommodating space (21), and the second pin portion (115) of the terminal assembly (10) extends to the outside of the terminal seat (2) through the second groove (212). The terminal structure of the elastic clamping wire as described in claim 6, wherein the terminal assembly (1c) and a terminal seat (2) are combined into a third terminal unit (A3); the terminal seat (2) has a recessed accommodating space (21) for accommodating the terminal assembly (1c) on one side surface, and a positioning column (213) is provided inside the accommodating space (21) to stop at the curved portion (113) of the metal spring sheet (12). 21) to prevent the metal spring (12) from being displaced when it moves, a first groove (211) and a second groove (212) connected to the outside are arranged around the accommodating space (21), and the first pin portion (114) and the second pin portion (115) of the terminal assembly (10) extend to the outside of the terminal seat (2) through the first groove (211) and the second groove (212) respectively. A terminal structure for elastically clamping wires as described in claim 15, wherein the terminal seat (2) is provided with a plurality of coupling parts (24) on one side facing the accommodating space (21), and a coupled part (25) corresponding to each coupling part (24) is provided on a side away from the accommodating space (21); the coupling parts (24) of different terminal seats (2) are assembled with the coupled parts (25) of another terminal seat (2), and a coupled part (201) corresponding to the coupling part (24) is provided on a side cover (20), and the side cover (20) is assembled to the terminal seat (2) at the outermost edge and covers the accommodating space (21). A terminal structure for elastically clamping wires as described in claim 16, wherein a plurality of coupling parts (24) are provided on one side of the terminal seat (2) facing the accommodating space (21), and coupled parts (25) corresponding to each coupling part (24) are provided on a side away from the accommodating space (21); the coupling parts (24) of different terminal seats (2) are assembled with the coupled parts (25) of another terminal seat (2), and a coupled part (201) corresponding to the coupling part (24) is provided on a side cover (20), and the side cover (20) is assembled to the terminal seat (2) at the outermost edge and covers the accommodating space (21). A terminal structure for elastically clamping wires as described in claim 17, wherein the terminal seat (2) is provided with a plurality of coupling parts (24) on one side facing the accommodating space (21), and a coupled part (25) corresponding to each coupling part (24) is provided on a side away from the accommodating space (21); the coupling parts (24) of different terminal seats (2) are assembled with the coupled parts (25) of another terminal seat (2), and a coupled part (201) corresponding to the coupling part (24) is provided on a side cover (20), and the side cover (20) is assembled to the terminal seat (2) at the outermost edge and covers the accommodating space (21). A terminal structure for elastically clamping wires as described in claim 18, wherein a plurality of coupling parts (24) are provided on one side of the terminal seat (2) facing the accommodating space (21), and a coupled part (25) corresponding to each coupling part (24) is provided on a side away from the accommodating space (21); the coupling parts (24) of different terminal seats (2) are assembled with the coupled parts (25) of another terminal seat (2), and a coupled part (201) corresponding to the coupling part (24) is provided on a side cover (20), and the side cover (20) is assembled to the terminal seat (2) at the outermost edge and covers the accommodating space (21). A terminal structure for elastically clamping a wire as described in claim 15, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 16, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 17, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 18, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 19, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 20, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 21, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to between the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 22, wherein the surface of the terminal seat (2) is provided with a wire insertion hole (22) for inserting a wire (D) and an operating hole (23), the wire insertion hole (22) extends to between the outer edge of the clamping end (123) corresponding to the metal spring (12) and the interior of the accommodating portion (111), and the operating hole (23) extends to a position corresponding to the clamping end (123) and the curved portion (121). A terminal structure for elastically clamping a wire as described in claim 23, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 24, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 25, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 26, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 27, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 28, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 29, wherein an operating key (231) is provided inside the operating hole (23). A terminal structure for elastically clamping a wire as described in claim 30, wherein an operating key (231) is provided inside the operating hole (23).

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