TW202414916A - The structure of the electrical connection component of the terminal device - Google Patents

Abstract

A terminal device power connection assembly structure includes: a conductive support and a metal spring, the conductive support is provided with a coupled portion, the metal spring has a curved arc portion in the middle, and a coupling portion and a butting portion are respectively provided at two ends, the coupling portion can be directly connected to the coupled portion, and the butting portion can elastically butt against an externally inserted wire, so that the wire and the conductive support are connected; under the condition of simple manufacturing and assembly, the metal spring can be made to maintain a firmly connected structure with the conductive support without being positioned by an external plastic shell, so as to improve the prior art situation that the metal spring and the conductive support are loosened due to deformation of the coated plastic shell and the safety of conduction is affected.

Description

Terminal device power connection assembly structure

The present invention relates to a terminal device power connection assembly structure, and in particular to a terminal device power connection assembly structure that is simple to manufacture and assemble and has a stable combination.

It is a known technique to use a metal element or metal spring enclosed in an insulating shell (usually made of plastic material) to press a wire entering a terminal to form an electrically connected connecting terminal, and to make the connecting terminal snap onto a grounding rail (or conductive rail) in an array to establish a common grounding device for electrical or mechanical equipment to lead out the residual voltage or static electricity of those machines.

In the patent case US 2014/0127932 A1 “ELECTRICAL CONNECTION TERMINAL”, it is disclosed that in an electrical connection terminal, a contact leg at one end of a clamping spring is inserted into between two projections inside a plastic housing to form a limit position, so that the clamping leg at the other end of the clamping spring can cooperate with the current grid. bar) is used to clamp an inserted wire so that the wire is connected to the grounding track (or conductive track) through the current grid. However, in this structure, since the clamping spring piece is only positioned by the structure inside the plastic shell, and there is no connection or positioning structure between its contact pin and the current grid, in actual application, it is easy to cause the contact pin of the clamping spring piece to be disengaged from the current grid due to the deformation of the plastic shell (especially long-term use).

In the patent case US 2013/0143433 A1 "CONNECTION TERMINAL", it is disclosed that conductive springs are arranged on two sides of a housing. The conductive springs are positioned by utilizing the structure inside the housing, and one end of the conductive springs is connected to two ends of a bus bar by contact. Such a structure is prone to the conductive springs being disconnected from the bus bar and disconnected due to deformation of the plastic housing.

In order to improve the above situation, the prior art has disclosed a spring-type combined conductive frame (or current grid) structure; the embodiment provides a mode in which a person operates to compress and/or rotate the spring-type to buckle into the conductive frame to form an electrical connection. However, as those skilled in the art know, the above combined operation mode is relatively cumbersome and inconvenient.

Representatively, the above reference material shows that in the relevant electrical connection terminal, at least one conductive spring is fixed to the side of the end of the current grid (or busbar) by using the structure inside the plastic shell, so that one end of the conductive spring contacts the current grid (or busbar) to form a connection, and the other end of the conductive spring can elastically contact and contact the inserted wire to form a connection structure, or a person operates to compress and rotate the spring to buckle it into the conductive frame; in actual application, the deformation of the plastic shell may easily cause the end of the conductive spring to be disconnected and disconnected from the current grid (or busbar), resulting in safety issues and assembly operation troubles, resulting in defects in use.

In view of the above-mentioned shortcomings of the conventional conductive spring assembly structure of the electrical connection terminal in actual use, the inventor has studied ways to improve these shortcomings, and finally the present invention is produced.

The main purpose of the present invention is to provide a terminal device power connection assembly structure, wherein a coupled portion is provided on a conductive support, and a coupling portion that can be directly assembled on the coupled portion is provided on one end of a metal spring, so that the metal spring can be connected and coupled to the conductive support, and the abutting portion at the other end of the metal spring elastically abuts against an externally inserted wire, so as to achieve the effect of conducting the wire with the conductive support; under the condition of simple manufacturing and assembly, the metal spring can be maintained to form a firmly connected structure with the conductive support without being positioned by an external plastic shell through the above-mentioned assembly mechanism, so as to effectively improve the defect of the metal spring and the conductive support being loosened due to the deformation of the covering plastic shell.

Another object of the present invention is to provide a terminal device power connection assembly structure, wherein the coupled portion can be at least one hollow plug hole, and the coupled portion has a plug piece protruding outward from the end of the metal spring sheet, and shoulders and stop portions are provided at intervals on the sides of the plug piece. The plug piece is passed through the plug hole, and the shoulders and stop portions are respectively stopped at the upper and lower edge portions of the plug hole, so that the metal spring sheet and the conductive bracket can form a combination structure that is not easy to loosen.

Another object of the present invention is to provide a terminal device power connection assembly structure, wherein the outer end of the plug-in piece is provided with an open central groove, so that when the two sides of the plug-in piece are squeezed, it has the elasticity to shrink inwards and easily penetrate the plug-in hole, and a positioning piece (or elastic piece) can be provided inside (or beside) the central groove as needed, and the positioning piece (or elastic piece) is provided with a secondary stop portion. The secondary stop portion and the stop portion cooperate with each other to stop at different positions of the lower edge of the plug-in hole, so that the metal elastic piece and the conductive bracket can form a more stable combined structure.

In order to make the above-mentioned purpose, effect and characteristics of the present invention more specifically understood, the following drawings are provided for explanation:

Please refer to Figures 1 to 3, it can be seen that the structure of the first embodiment of the present invention includes: a conductive support 1, a metal spring 2 and other parts; wherein the conductive support 1 is arranged inside an insulating housing (not shown) and can be connected to an external grounding rail or conductor (not shown), and at least one coupled portion 11 is provided on the conductive support 1; in actual application, the conductive support 1 can be provided with a coupled portion 11 at both ends (left and right) as needed.

The metal spring 2 has a curved arc portion 21 in the middle, and a coupling portion 22 and a butting portion 23 at both ends of the metal spring 2. The coupling portion 22 can be directly assembled on the coupled portion 11, so that the metal spring 2 can be coupled to the conductive support 1 to form a non-loose assembly structure; and the butting portion 23 has a curved secondary conductive arc surface 231 at the end thereof, which can elastically butt against an externally extending wire (not shown) to form contact conduction.

In a feasible embodiment, the coupled portion 11 may be a hollowed-out plug hole, and the edges of the coupled portion 11 (plug hole) located in the longitudinal direction (corresponding to the extension direction of the two ends of the metal spring sheet 2) may be respectively defined as end edges 111, and the edges of the two lateral (lateral) positions between the two end edges 111 may be respectively defined as side edges 112. The end edge 111 of the (connection hole) near the extension portion of the secondary guide arc surface 231 can be connected to a vertically extending folded edge 12 via a guide arc surface 121; the connecting portion 22 has a plug-in piece 221 that can penetrate and connect to the connected portion 11 (connection hole), and a shoulder 223 that is horizontally arranged on at least one side of the connecting portion between the curved arc portion 21 of the metal spring sheet 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 extends outward (or toward the bottom in the figure) from the end of the curved arc portion 21 of the metal spring piece 2, and the plug-in piece 221 is provided with a stopper 222 protruding from the middle section of at least one surface side.

During assembly, the plug-in sheet 221 is directly passed through the coupled portion 11 (plug-in hole), so that the shoulder 223 can be stopped at the upper edge of the side edge 112 of the coupled portion 11 (plug-in hole), and the blocking portion 222 is stopped at the lower edge of the end edge 111 of the coupled portion 11 (plug-in hole), so that the metal spring sheet 2 can be stably assembled on the conductive bracket 1; at the same time, the secondary guide arc surface 231 can form two opposite guide arc surfaces with the guide arc surface 121, so as to facilitate the wire (not shown) to extend from the outside and be clamped between the secondary guide arc surface 231 and the guide arc surface 121 to form contact and conduction.

Referring to FIGS. 4 to 6 , it can be seen that the structure of the second embodiment of the present invention includes: a conductive support 1, a metal spring 2, etc.; wherein the conductive support 1 has the same structure as the first embodiment; and the middle section and one end of the metal spring 2 are respectively provided with a curved arc portion 21 and a butting portion 23 which are the same as those of the first embodiment, the difference being that: the metal spring 2 is provided with a coupling portion 22 which can be directly assembled on the coupled portion 11 at one end away from the butting portion 23, the coupling portion 22 has a plug-in piece 221 which can penetrate and be coupled to the coupled portion 11 (plug-in hole), and a shoulder 223 which is transversely arranged at least on one side of the coupling portion between the curved arc portion 21 of the metal spring 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 extends outward (or toward the bottom in the figure) from the end of the curved arc portion 21 of the metal spring piece 2, and a stopper 222 is provided on at least one side edge of the plug-in piece 221.

During assembly, the plug-in sheet 221 is directly passed through the coupled portion 11 (plug-in hole), so that the shoulder 223 can be stopped at the upper edge of the side edge 112 of the coupled portion 11 (plug-in hole), and the stopping portion 222 can be stopped at the lower edge of the side edge 112 of the coupled portion 11 (plug-in hole), so that the metal spring sheet 2 can be stably assembled on the conductive bracket 1.

In actual application, the plug-in piece 221 is provided with a guide bevel 225 whose width gradually decreases from the stopper 222 toward the outer end (or the lower part in the figure). The guide bevel 225 has a straight beveled edge shape to guide the end of the plug-in piece 221 to extend into the coupled part 11 (plug-in hole); and the plug-in piece 221 is away from the middle section (or the curved section) of the metal spring sheet 2. The curved portion 21) is provided with a central channel 224 which is open and extends longitudinally (or toward the bottom in the figure). The two sides of the central channel 224 are in the shape of straight edges, so that when the two sides of the plug-in piece 221 are squeezed, it has the elasticity to shrink inward (toward the central channel 224), so that the plug-in piece 221 can be more easily penetrated and assembled in the combined portion 11 (plug hole).

It is understood that the structural types of the coupling portion 22 and the coupled portion 11 can be modified to correspond to each other; for example, the coupling portion 22 forms a plug hole structure, and the coupled portion 11 correspondingly forms a plug sheet structure.

Referring to FIGS. 7 to 9, it can be seen that the structure of the third embodiment of the present invention includes: a conductive support 1, a metal spring 2, etc.; wherein the conductive support 1 has the same structure as the first embodiment; and the middle section and one end of the metal spring 2 are respectively provided with a curved arc portion 21 and a butt portion 23 which are the same as those of the first embodiment, and the metal spring 2 is provided with a coupling portion 22 which can be directly assembled on the coupled portion 11 at one end away from the butt portion 23, and the coupling portion 22 has a plug-in piece 221 which can penetrate and be coupled to the coupled portion 11 (plug-in hole), and a shoulder 223 which is transversely arranged at least on one side of the coupling portion between the curved arc portion 21 of the metal spring 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 extends outward (or toward the lower side in the figure) from the end of the curved arc portion 21 of the metal spring piece 2, and a stopper 222 is provided on at least one side edge of the plug-in piece 221; the difference is that: the plug-in piece 221 is provided with a guide bevel 225 with a width gradually reduced from the stopper 222 toward the outer end (or the lower side in the figure), and the guide bevel 225 is an edge shape with an arc bend, so as to guide the end of the plug-in piece 221 to extend into the The plug-in piece 221 is provided with a central groove 224 which is open and extends longitudinally (or toward the bottom in the figure) in a direction away from the middle section (or the curved arc portion 21) of the metal spring sheet 2. The central groove 224 has arc-shaped edges on both sides, so that when the two sides of the plug-in piece 221 are squeezed, it has the elasticity to shrink inward (toward the central groove 224), so that the plug-in piece 221 can be more easily penetrated and assembled in the combined portion 11 (plug-in hole).

Referring to FIGS. 10 to 12, the structure of the fourth embodiment of the present invention includes: a conductive support 1, a metal spring 2, etc.; wherein the conductive support 1 is provided with at least one coupled portion 11, the coupled portion 11 can be a hollowed-out plug hole, and the edges of the coupled portion 11 (plug hole) at the longitudinal position are respectively defined as end edges 111, and the two lateral positions between the two end edges 111 are respectively defined as The edges are respectively defined as side edges 112, and one end edge 111 of the coupled portion 11 (connection hole) is connected to a vertically extending folded edge 12 via an arc guide surface 121; a transverse partition 13 is disposed between the middle sections of the two side edges 112 of the coupled portion 11 (connection hole), and the transverse partition 13 can separate the side of the coupled portion 11 (connection hole) close to the arc guide surface 121 to form a receiving hole 120.

The metal spring piece 2 is provided with a curved arc portion 21 and a butting portion 23 which are the same as those in the first embodiment at the middle section and one end thereof, respectively. The metal spring piece 2 is provided with a coupling portion 22 which can be directly assembled on the coupled portion 11 at one end away from the butting portion 23. The coupling portion 22 has a plug-in piece 221 which can penetrate and be coupled to the coupled portion 11 (plug-in hole), and a shoulder 223 which is transversely arranged at least on one side of the coupling portion between the curved arc portion 21 of the metal spring piece 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 has the same structures as the second embodiment, such as the stopper 222, the guiding bevel 225 and the central channel 224; the difference is that the plug-in piece 221 has a bifurcated spring piece 226, and the spring piece 226 extends from one end close to the middle section (or the curved arc section 21) of the metal spring piece 2 along the central channel 224 (or toward the lower side in the figure), and the middle section of the spring piece 226 is bent to form a secondary stopper 227, and a guiding bevel 228 is formed from the secondary stopper 227 toward the curved arc section 21 away from the metal spring piece 2.

During assembly, the guide bevel 225 can be used to guide the plug-in piece 221 to pass through the coupled portion 11 (plug-in hole), and the guide bevel 228 can guide the elastic piece 226 to pass through the coupled portion 11 (plug-in hole). When the plug-in piece 221 and the elastic piece 226 simultaneously penetrate the coupled portion 11 (plug-in hole), the shoulder 223 can be stopped at the upper edge portion of the coupled portion 11 (plug-in hole) corresponding to the side edge 112, and the stop portion 222 can be stopped at the upper edge portion of the coupled portion 11 (plug-in hole) corresponding to the side edge 112. The auxiliary stop portion 227 can stop at the lower edge of the coupled portion 11 (plug hole) corresponding to the end edge 111, so that the metal spring 2 can be stably assembled on the conductive bracket 1; at the same time, the auxiliary guide arc surface 231 of the top-butting portion 23 can extend to the side of the receiving hole 120 close to the guide arc surface 121, so that when the external wire (not shown) extends into the receiving hole 120, a guiding and clamping mechanism can be formed between the auxiliary guide arc surface 231 and the guide arc surface 121.

Referring to FIGS. 13 to 16 , it can be seen that the structure of the fifth embodiment of the present invention includes: a conductive support 1, a metal spring 2, etc.; wherein the conductive support 1 has the same structure as the fourth embodiment; and the middle section and one end of the metal spring 2 are respectively provided with a curved arc portion 21 and a butt portion 23, etc., which are the same as the second embodiment, and the metal spring 2 is provided with a coupling portion 22 that can be directly assembled on the coupled portion 11 at one end away from the butt portion 23, and the coupling portion 22 has a plug-in piece 221 that can penetrate and couple to the coupled portion 11 (plug-in hole), and a shoulder 223 that is transversely disposed at least on one side of the coupling portion between the curved arc portion 21 of the metal spring 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 has the same structures as the second embodiment, such as the stopper 222, the guiding bevel 225 and the central groove 224; the difference is that the plug-in piece 221 is provided with an embedding groove 229 at one end of the central groove 224 close to the middle section (or the curved arc portion 21) of the metal spring 2, for embedding and clamping a positioning piece 22a, and the positioning piece 22a has at least one plug-in portion 221a, and at least one side of the plug-in portion 221a is provided with a secondary stopper 222a, and at least one secondary stopper is connected to the secondary stopper. The secondary shoulder 223a corresponding to the metal spring 222a, the plug-in portion 221a is provided with an open secondary central groove 224a in the direction away from the middle section (or the curved arc portion 21) of the metal spring 2 (or toward the lower part in the figure), and the plug-in portion 221a is provided with a secondary guide bevel 225a with a width gradually reduced from the secondary stop portion 222a toward the outer end (or the lower part in the figure); when the positioning piece 22a is fixed in the central groove 224 through the embedding groove 229, the plug-in portion 221a can extend parallel to the plug-in piece 221.

During assembly, when the positioning piece 22a and the plug-in piece 221 simultaneously penetrate the coupled portion 11 (plug-in hole), the shoulder 223 can be stopped at the upper edge portion of the coupled portion 11 (plug-in hole) corresponding to the side edge 112, and the stopping portion 222 can be stopped at the lower edge portion of the coupled portion 11 (plug-in hole) corresponding to the side edge 112. and the positioning piece 22a is stopped by the secondary shoulder 223a at the upper edge portion of the coupled portion 11 (plug hole) corresponding to the end edge 111, and the secondary blocking portion 222a is stopped at the lower edge portion of the coupled portion 11 (plug hole) corresponding to the end edge 111, so that the metal spring sheet 2 can be more stably assembled on the conductive bracket 1.

Referring to FIGS. 17 to 20, it can be seen that the structure of the sixth embodiment of the present invention includes: a conductive support 1, a metal spring 2, etc.; wherein the conductive support 1 has the same structure as the fourth embodiment; and the middle section and one end of the metal spring 2 are respectively provided with a curved arc portion 21 and abutting portion 23, etc., which are the same as the second embodiment, and the metal spring 2 is provided with a coupling portion 22 that can be directly assembled on the coupled portion 11 at one end away from the butting portion 23, and the coupling portion 22 has a plug-in piece 221 that can extend into the coupled portion 11 (plug-in hole), and a shoulder 223 that is transversely arranged on at least one side of the coupling portion between the curved arc portion 21 of the metal spring 2 and the plug-in piece 221.

In this embodiment, the plug-in piece 221 has a shorter extension from the end of the curved arc portion 21 of the metal spring piece 2 outward (or toward the bottom in the figure), and an open central groove 224 is provided on the plug-in piece 221 away from the middle section (or curved arc portion 21) of the metal spring piece 2. An embedding groove 229 is provided at one end of the central groove 224 close to the middle section (or curved arc portion 21) of the metal spring piece 2 for embedding a positioning piece 22a.

The positioning piece 22a has at least one plug-in portion 221a, and a corresponding secondary shoulder portion 223a and a secondary stop portion 222a are provided on at least one side of the plug-in portion 221a. A secondary guide bevel 225a with a width gradually reduced from the secondary stop portion 222a toward the outer end portion (or the lower portion in the figure) is provided on the side of the plug-in portion 221a. The plug-in portion 221a is away from the middle section (or the curved arc portion 2 1) direction (or toward the lower side in the figure), a secondary central groove 224a with an opening is provided, and a hook portion 22b is provided on at least one side between the embedding groove 229 and the central groove 224, and the hook portion 22b can be hooked to an end portion of the secondary central groove 224a close to the middle section (or the curved arc portion 21) of the metal spring sheet 2, so that the positioning piece 22a is combined and positioned in the central groove 224 of the metal spring sheet 2.

During assembly, when the plug-in piece 221 extends into the coupled portion 11 (plug-in hole) and stops at the upper edge portion of the coupled portion 11 (plug-in hole) corresponding to the side edge 112 with the shoulder portion 223, the positioning piece 22a can simultaneously penetrate the coupled portion 11 (plug-in hole) and stop at the upper edge portion of the coupled portion 11 (plug-in hole) corresponding to the end edge 111 with the secondary shoulder portion 223a, and stop at the lower edge portion of the coupled portion 11 (plug-in hole) corresponding to the end edge 111 with the secondary stop portion 222a, so that the metal spring sheet 2 can be assembled on the conductive bracket 1.

The structure disclosed in the above-mentioned embodiment, the structural matching type of the coupling part 22 and the coupled part 11, provides a method for the personnel to directly complete the insertion and coupling operation during the assembly process without the need for the conventional technique of compressing and/or rotating the metal spring, thereby achieving the effects of simplifying the manufacturing process and improving the assembly speed.

In summary, the terminal device of the present invention can achieve the effect of convenient assembly and stable combination, which is a novel and progressive invention. Therefore, an invention patent application is filed in accordance with the law. However, the above description is only for the better embodiment of the present invention. 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: Conductive bracket

11: Combined part

111: End edge

112: Side edge

12: Folding

120: Receiving Hole

121: Arc guide surface

13: Horizontal septum

2: Metal Shrapnel

21: Curved arc

２２: Joint

221: Connector

221a: Plug-in section

222: Stopper

222a, 227: auxiliary stopper

223: Shoulder

223a: Secondary shoulder

224: Central channel

224a: Sub-central channel

225: Guide bevel

225a: Auxiliary guide bevel

226: Shrapnel

228: Guide slope

229: groove

22a: Positioning piece

２２ｂ:Hook

23: Reach the top

231: Auxiliary guide arc surface

FIG. 1 is a three-dimensional exploded structural diagram of the first embodiment of the present invention.

Figure 2 is a three-dimensional assembly structure diagram of the first embodiment of the present invention.

Figure 3 is a front view combined cross-sectional view of the first embodiment of the present invention.

Figure 4 is a three-dimensional exploded structural diagram of the second embodiment of the present invention.

Figure 5 is a three-dimensional assembly structure diagram of the second embodiment of the present invention.

FIG6 is a side cross-sectional view of the metal spring and conductive support assembly of the second embodiment of the present invention.

Figure 7 is a three-dimensional exploded structural diagram of the third embodiment of the present invention.

Figure 8 is a three-dimensional assembly structure diagram of the third embodiment of the present invention.

FIG. 9 is a side cross-sectional view of the metal spring and conductive bracket assembly of the third embodiment of the present invention.

Figure 10 is a three-dimensional exploded structural diagram of the fourth embodiment of the present invention.

Figure 11 is a three-dimensional assembly structure diagram of the fourth embodiment of the present invention.

Figure 12 is a front view combined cross-sectional view of the fourth embodiment of the present invention.

Figure 13 is a three-dimensional exploded structural diagram of the fifth embodiment of the present invention.

Figure 14 is a three-dimensional assembly structure diagram of the fifth embodiment of the present invention.

Figure 15 is a front view combined cross-sectional view of the fifth embodiment of the present invention.

FIG. 16 is a side cross-sectional view of the metal spring and conductive bracket assembly of the fifth embodiment of the present invention.

Figure 17 is a three-dimensional exploded structural diagram of the sixth embodiment of the present invention.

Figure 18 is a three-dimensional assembly structure diagram of the sixth embodiment of the present invention.

Figure 19 is a front view combined cross-sectional view of the sixth embodiment of the present invention.

FIG. 20 is a side cross-sectional view of the metal spring and conductive bracket assembly of the sixth embodiment of the present invention.

1: Conductive bracket

11: Combined part

111: End edge

112: Side edge

12: Folding

121: Arc guide surface

2:Metal Shrapnel

21: Curved arc

22: Junction

221: Plug-in piece

222: Stopper

223: Shoulder

224: Central channel

225: Guide bevel edge

23: Reach the top

231: Secondary guide arc surface

Claims (29)

A terminal device power connection component structure at least comprises: a conductive support (1) provided with at least one coupled portion (11); a metal spring sheet (2) having a coupling portion (22) at one end thereof which can be coupled to the coupled portion (11) so that the metal spring sheet (2) can be connected to the conductive support (1); and a supporting portion (23) with active elasticity is formed at the other end of the metal spring sheet (2) so as to be elastically coupled to a conductor and form contact conduction. The terminal device power connection component structure as described in claim 1, wherein the coupled portion (11) is a hollow plug hole, and the coupling portion (22) has at least one stopping portion (222), so that the coupling portion (22) passes through the plug hole, and the stopping portion (222) can cooperate and stop at the lower edge of the plug hole, so that the metal spring (2) and the conductive bracket (1) form a combination that is not easy to separate. The terminal device power connection assembly structure as described in claim 2, wherein the coupling portion (22) is provided with at least one shoulder (223) near the middle portion of the metal spring sheet (2), and the shoulder (223) can cooperate with the stopping portion (222) to stop at the upper edge of the plug hole, so that the metal spring sheet (2) and the conductive bracket (1) form a more stable combination. The electrical connection component structure of the terminal device as described in claim 2 or 3, wherein the coupling portion (22) has a plug-in piece (221), and the stopping portion (222) is arranged on at least one surface side of the plug-in piece (221). The electrical connection component structure of the terminal device as described in claim 2 or 3, wherein the coupling portion (22) has a plug-in piece (221), and the stopping portion (222) is arranged on at least one side edge of the plug-in piece (221). The electrical connection assembly structure of the terminal device as described in claim 5, wherein the plug-in piece (221) is provided with an open central groove (224) extending longitudinally in the direction away from the middle section of the metal spring sheet (2). The terminal device power connection assembly structure as described in claim 6, wherein the shape of the two side edges of the central groove (224) is selected from one of straight, arc, etc. As described in claim 5, the terminal device power connection assembly structure, wherein the plug-in piece (221) is provided with a guide bevel (225) whose width gradually decreases from the stop portion (222) toward one end away from the middle section of the metal spring (2). The terminal device power connection assembly structure as described in claim 6, wherein the plug-in piece (221) is provided with a guide bevel (225) whose width gradually decreases from the stop portion (222) toward one end away from the middle section of the metal spring (2). As described in claim 7, the terminal device power connection assembly structure, wherein the plug-in piece (221) is provided with a guide bevel (225) whose width gradually decreases from the stop portion (222) toward one end away from the middle section of the metal spring (2). A terminal device power connection assembly structure as described in claim 8, wherein the shape of the guide bevel (225) is selected from one of a straight bevel and an arc bend. A terminal device power connection assembly structure as described in claim 9, wherein the shape of the guide bevel (225) is selected from one of a straight bevel and an arc bend. A terminal device power connection assembly structure as described in claim 10, wherein the shape of the guide bevel (225) is selected from one of a straight bevel and an arc bend. The electrical connection assembly structure of the terminal device as described in claim 6, wherein the plug-in piece (221) is provided with a spring (226), and the spring (226) is forked and extended from the edge of one end of the central groove (224) close to the middle section of the metal spring (2), and the middle section of the spring (226) is bent to form a secondary stop portion (227), and a guide slope (228) is formed from the secondary stop portion (227) toward one end away from the middle section of the metal spring (2). The electrical connection assembly structure of the terminal device as described in claim 9, wherein the plug-in piece (221) is provided with a spring (226), and the spring (226) is forked and extended from the edge of one end of the central groove (224) close to the middle section of the metal spring (2), and the middle section of the spring (226) is bent to form a secondary stop portion (227), and a guide slope (228) is formed from the secondary stop portion (227) toward one end away from the middle section of the metal spring (2). The terminal device power connection assembly structure as described in claim 6, wherein the central groove (224) is provided with an embedding groove (229) at one end close to the middle section of the metal spring (2) for embedding a positioning plate (22a), the positioning plate (22a) has at least one plug-in portion (221a) extending parallel to the plug-in plate (221), and a secondary stop portion (222a) is provided on at least one side of the plug-in portion (221a), and at least one secondary shoulder (223a) corresponding to the secondary stop portion (222a), when the plug-in portion (221a) passes through the plug-in hole along with the plug-in plate (221), the secondary shoulder (223a) and the secondary stop portion (222a) can cooperate to stop at the upper and lower edge portions of the plug-in hole. The terminal device power connection assembly structure as described in claim 9, wherein the central groove (224) is provided with an embedding groove (229) at one end close to the middle section of the metal spring (2) for embedding a positioning plate (22a), the positioning plate (22a) has at least one plug-in portion (221a) extending parallel to the plug-in plate (221), and a secondary stop portion (222a) and a secondary shoulder (223a) corresponding to the secondary stop portion (222a) are provided on at least one side of the plug-in portion (221a). When the plug-in portion (221a) passes through the plug-in hole along with the plug-in plate (221), the secondary shoulder (223a) and the secondary stop portion (222a) can cooperate to stop at the upper and lower edge portions of the plug-in hole. The electrical connection assembly structure of the terminal device as described in claim 16, wherein the plug-in portion (221a) of the positioning plate (22a) is provided with an open and longitudinally extending secondary central groove (224a) in the direction away from the middle section of the metal spring (2); and the plug-in portion (221a) is provided with a secondary guide bevel (225a) with a width gradually reduced formed by the secondary stop portion (222a) at one end away from the middle section of the metal spring (2). The terminal device power connection assembly structure as described in claim 17, wherein the plug-in portion (221a) of the positioning plate (22a) is provided with an open and longitudinally extending secondary central groove (224a) in the direction away from the middle section of the metal spring (2); and the plug-in portion (221a) is provided with a secondary guide bevel (225a) with a width gradually reduced formed by the secondary stop portion (222a) at one end away from the middle section of the metal spring (2). The terminal device power connection assembly structure as described in claim 6, wherein the central groove (224) is provided with an embedding groove (229) at one end close to the middle section of the metal spring (2) for embedding a positioning piece (22a), the positioning piece (22a) having at least one plug-in portion (221a), and a secondary stop portion (222a) is provided on at least one side of the plug-in portion (221a), the plug-in portion (221a) is far away from the metal spring ( 2) A secondary central groove (224a) having an opening and extending longitudinally is provided at one end of the middle section; a hook portion (22b) is provided at at least one side between the embedding groove (229) and the central groove (224), and the hook portion (22b) can be hooked to an end of the secondary central groove (224a) close to the metal spring sheet (2) so that the positioning sheet (22a) is combined and positioned in the central groove (224) of the metal spring sheet (2). The terminal device power connection assembly structure as described in claim 9, wherein the central channel (224) is provided with an embedding groove (229) at one end close to the middle section of the metal spring (2) for embedding a positioning piece (22a), the positioning piece (22a) having at least one plug-in portion (221a), and a secondary stop portion (222a) is provided on at least one side of the plug-in portion (221a), the plug-in portion (221a) is far away from the metal spring ( 2) A secondary central groove (224a) having an opening and extending longitudinally is provided at one end of the middle section; a hook portion (22b) is provided at at least one side between the embedding groove (229) and the central groove (224), and the hook portion (22b) can be hooked to an end of the secondary central groove (224a) close to the metal spring sheet (2) so that the positioning sheet (22a) is combined and positioned in the central groove (224) of the metal spring sheet (2). The electrical connection assembly structure of the terminal device as described in claim 20, wherein the plug-in portion (221a) is provided with at least one secondary shoulder (223a) corresponding to the secondary stop portion (222a); and the plug-in portion (221a) is provided with a secondary guide bevel (225a) with a width gradually decreasing from the secondary stop portion (222a) toward one end away from the middle section of the metal spring (2). The electrical connection assembly structure of the terminal device as described in claim 21, wherein the plug-in portion (221a) is provided with at least one secondary shoulder (223a) corresponding to the secondary stop portion (222a); and the plug-in portion (221a) is provided with a secondary guide bevel (225a) with a width gradually decreasing from the secondary stop portion (222a) toward one end away from the middle section of the metal spring (2). The electrical connection component structure of the terminal device as described in claim 2 or 3, wherein the plug hole is provided with a folded edge (12) connected by a curved guide arc surface (121) at an end edge of the extension portion of the top portion (23) close to the metal spring (2). The electrical connection assembly structure of the terminal device as described in claim 4, wherein the plug hole is provided with a folded edge (12) connected by a curved guide arc surface (121) at an end edge of the extension portion of the top portion (23) close to the metal spring (2). The electrical connection assembly structure of the terminal device as described in claim 5, wherein the plug hole is provided with a folded edge (12) connected by a curved guide arc surface (121) at an end edge of the extension portion of the top portion (23) close to the metal spring (2). As described in claim 24, the electrical connection assembly structure of the terminal device, wherein a transverse partition (13) is provided in the plug hole, and the transverse partition (13) separates an end area of the plug hole close to the arc guide surface (121) to form a receiving hole (120). As described in claim 25, the electrical connection assembly structure of the terminal device, wherein a transverse partition (13) is provided in the plug hole, and the transverse partition (13) separates an end area of the plug hole close to the arc guide surface (121) to form a receiving hole (120). The electrical connection assembly structure of the terminal device as described in claim 26, wherein a transverse partition (13) is provided in the plug hole, and the transverse partition (13) separates an end area of the plug hole close to the arc guide surface (121) to form a receiving hole (120).

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