CN107819226B

CN107819226B - Combined structure of track terminal

Info

Publication number: CN107819226B
Application number: CN201610819517.2A
Authority: CN
Inventors: 吴智远; 陈玮奇; 戴明杉
Original assignee: JINLIAN ELECTRONIC TECHNOLOGY (SHANGHAI) Co Ltd
Current assignee: JINLIAN ELECTRONIC TECHNOLOGY (SHANGHAI) Co Ltd
Priority date: 2016-09-13
Filing date: 2016-09-13
Publication date: 2020-01-14
Anticipated expiration: 2036-09-13
Also published as: CN107819226A

Abstract

The invention discloses a combined structure of a track terminal.A through assembly channel is arranged in a protective part, the assembly channel is provided with an incoming line end, the incoming line end is arranged at two sides close to a combined side part and is respectively provided with a first positioning part, the other end far away from the first positioning part is provided with a second positioning part, and a conducting strip extends into the assembly channel by one end part; the two ends of a metal elastic sheet with a bent elastic part in the middle section are provided with a first section and a second section, two sides of the first section close to the middle section are respectively provided with a first positioned part, when the first section corresponding to the combined side part extends into the assembly channel, the first positioned part is fixedly connected with the first positioned part, and then the second positioned part is matched with the second positioned part to fix a second fixed part, so that the metal elastic sheet has the function of positioning in the protection part, the end part of the combination of the conducting sheet and the protection sheet is free from the limitation of the combination of the first section of the metal elastic sheet, and the manufacture of different folding angles is carried out according to the requirement of the angle of the plug wire.

Description

Combined structure of track terminal

Technical Field

The present invention relates to a track terminal assembly structure, and more particularly, to a track terminal assembly structure with easy assembly, stable positioning, and improved insertion angle of external wires.

Background

It is a conventional technique to apply a metal component or a metal spring plate coated in an insulating housing to press a wire entering a terminal to form an electrically connected terminal structure, and to make the terminal array buckle on a grounding rail (or a conductive rail) to establish a shared grounding device of an electrical appliance or mechanical equipment to derive the residual voltage or static electricity of those machines; exemplary embodiments are provided in German patents such as DE202008015306U1, US2013/0143433A1 "CONNECTION TERMINAL", US2014/0127932A1 "ELECTRICAL CONNECTION TERMINAL", DE102012009286A1, US5362259 "GROUND CONDUCTOR TERMINAL".

As shown in fig. 24, 25 and 26, a terminal assembly structure widely used in the grounding rail at present mainly includes a conductive plate 7, a protection member 8 and a metal spring 9 to form a conductive bracket a structure; two ends of the conducting strip 7 are respectively vertically connected with a cantilever 72 for combining the protecting member 8, so that the conducting strip 7 forms an ㄩ -shaped section structure, one side near the middle section of the two cantilevers 72 is respectively provided with a notch 71, and the side of the top end of the cantilever 72 is provided with a shoulder 73; the protection member 8 is sleeved on the outer periphery of the cantilever 72, and comprises a secondary side 85, a first side 81, a second side 82, a third side 83 and a fourth side 84 which are vertically connected in sequence, an opening 86 is reserved between the fourth side 84 and the secondary side 85, so that the protection member 8 forms a C-shaped section outline for accommodating the metal elastic sheet 9, at least the secondary side 85 guides the motion path of the metal elastic sheet 9, and a concave part 821 and a concave part 841 are respectively recessed on one side of the joint part of the third side 83 and the second, fourth and

fifth sides

82 and 84; the metal elastic sheet 9 includes a first section 91 and a second section 92 bending and connecting the first section 91, the first section 91 has a tail end 94, the second section 92 has a head end 93, and the two sides of the first section 91 are respectively formed with side protrusions 941, 942 protruding outward, and the tail end 94 is provided with a finger 95 protruding outward.

In assembly, when the protection member 8 is fitted to the outer peripheral side of the cantilever 72 of the conductive plate 7, the second side 82 and the sub-side 85 are respectively fitted to two sides of the cantilever 72, and the metal spring 9 is engaged with the finger 95 inserted into the slot 71 of the conductive plate 7, so that the first section 91 is fitted to the inner side of the third side 83, and then the first section 91 is coupled to the third side 83 via the solder joint 80 (as shown in fig. 25), the fixing member 800 (as shown in fig. 26) or other methods, at this time, the second section 92 extends toward the cantilever 72, and the shoulder 73 restricts outward movement of the head end 93, so that the head end 93 has an effect of easily providing wire insertion and having a reverse stop.

However, the above-mentioned structure has the following disadvantages in practical applications:

1. since the metal elastic sheet 9 is inserted into the slot 71 by the finger portion 95 and can be combined and positioned on the conductive sheet 7, the cantilever 72 at the end of the conductive sheet 7 must have an extending direction approximately parallel to the first section 91 (in practice, the bending of the cantilever 72 is approximately perpendicular), so as to reasonably limit the second section 92 (the head end 93) of the metal elastic sheet 9 to have the characteristic of unidirectional elastic movement toward the conductive sheet 7 by using the simple structure of the shoulder portion 73; therefore, the design of the conductive sheet 7 is indirectly affected, so that the two ends of the conductive sheet 7 must have the bent cantilever 72 structure, and therefore, the wire insertion angle and direction of the external wire are also affected, the wire must be inserted into the protection member 8 from the direction perpendicular to the conductive sheet 7, and the wire beside the conductive support a must be bent upward first and then bent downward to be inserted into the protection member 8 to form the connection, which not only causes inconvenience in construction (especially, the wire with a larger wire diameter is not easy to bend) but also occupies a larger space.

2. The protection member 8 is connected to the conductive plate 7 by contacting the first edge 81 with the outer side of the cantilever 72 and inserting the third edge 83 into the slot 71 through the finger 95 of the metal spring 9; such a linking structure does not enable the protection member 8 and the conductive plate 7 to be firmly combined and positioned, as shown in fig. 26, when the metal elastic sheet 9 is subjected to an outward pulling force of the conductive wire, the first section 91 of the metal elastic sheet 9 will bear a counterclockwise moment with the finger portion 95 as the center, and when the counterclockwise moment exceeds the friction force between the finger portion 95 and the slot 71, the protection member 8, the metal elastic sheet 9 and the conductive plate 7 are easily loosened, which affects the reliability of the conductive wire and the related terminal combination.

In view of the above-mentioned shortcomings of the conventional track terminal assembly structure, the inventor has developed the present invention by studying and improving the shortcomings.

Disclosure of Invention

The present invention provides a combination structure of a track terminal, wherein a metal spring plate is directly and firmly combined on a protection member, and the protection member is simply combined on one end of a conductive plate, so that the conductive plate and the metal spring plate do not have the requirement of mutual combination, and the protection member has the characteristic of being capable of being bent towards various different inclination angles relative to the design of the conductive plate, and can just meet the connection requirement of external wires at various insertion angles, thereby simplifying the overall wiring and reducing the requirement of peripheral space.

Another objective of the present invention is to provide a combined structure of a track terminal, wherein one side of a U-shaped metal spring is attached to an inner surface of a preset combining side of a protection member, and is fixed to the front and rear sides of a contact portion between the metal spring and the combining side, and the other side of the metal spring has a movable end abutting against the conductive plate, so that the protection member, the metal spring and the conductive plate form a combination which is not easily loosened.

Another objective of the present invention is to provide a combination structure of a rail terminal, which is convenient for assembly and processing and can effectively reduce the production cost because the metal spring and the combined side of the protection member do not need to be combined and fixed by welding points or other fixing components.

To achieve the above objects and effects, the present invention comprises the following technical means: the protective piece is provided with two corresponding contact side parts and a combination side part, two side parts are arranged between the combination side part and the contact side part to define an assembly channel penetrating through the protective piece, the assembly channel is provided with an incoming line end, the incoming line end is respectively provided with a first positioning part at the joint part of the combination side part and the two side parts, and one end far away from the first positioning part is provided with a second positioning part; one end of the conducting strip extends into the assembling channel of the protecting piece and is attached and fixed on the inner surface of the contact side part; a metal spring piece, which has a first section and a second section, and a bending spring part is arranged between the first section and the second section to make the metal spring piece bend approximately in a U shape, two sides of the first section of the metal spring piece near the middle section are respectively provided with a first positioned part, so that the metal spring piece extends into the assembly channel along the way of attaching to the combining side part, the two first positioned parts can be exactly positioned and combined on the first positioning part, and the second positioned part is matched with the second positioning part to be fixed near or positioned at the second positioned part at the tail end of the first section, so that the metal spring piece can be exactly firmly combined on the protecting part, and the second section of the metal spring piece extends towards the contacting side part and is pressed and contacted on the conducting strip.

According to the above structure, at least one protruding elastic positioning portion is disposed on the combined side portion of the protection member, and a corresponding positioning hole is disposed on the first section of the metal elastic piece, so that the elastic positioning portion extends into the positioning hole to form a stable positioning between the first section of the metal elastic piece and the combined side portion of the protection member.

According to the above structure, the tail end of the second section of the metal elastic sheet is provided with an elastic end portion curved toward the contact side portion.

According to the above structure, the second positioning portion is a stopping piece bent from the edge of the combining side portion toward the assembling passage, and the stopping piece is stopped at the tail end of the first section of the metal elastic piece.

According to the structure, one side of the stop piece close to the combining side part is provided with a hollow slot hole, the tail end of the first section of the metal elastic piece is provided with a corresponding end convex part, and the end convex part is embedded into the hollow slot hole to form positioning.

According to the structure, the middle section of the stopping piece is provided with the upwards-protruding elastic piece which is inclined and protruded towards the combining side part, a gap is reserved between the upwards-protruding elastic piece and the combining side part, and the tail end of the first section of the metal elastic piece is directly embedded into the gap to form positioning.

According to the above structure, the edge of one side of the two lateral portions of the protection member near the second positioning portion is respectively provided with a side blocking portion bending towards the assembling passage, and the two side blocking portions respectively abut against the outer sides of the two sides of the blocking piece.

According to the above structure, the second positioning portion is a bending piece extending into the assembly channel and bending toward the inlet end, and the bending piece clamps the tail end of the first section of the metal elastic sheet to form positioning.

According to the above structure, one side edge of the two side portions of the protection member near the second positioning portion is respectively provided with a side blocking portion bending towards the assembling passage, and the two side blocking portions respectively abut against the bottom sides of the bending pieces.

According to the above structure, the positioning portion is a side blocking portion disposed on two side portions of the protection member and respectively bent toward the assembling passage, a gap is left between the two side blocking portions and the combining side portion, and the tail end of the first section of the metal elastic sheet directly penetrates through the gap to form positioning.

According to the above structure, the side blocking portion is disposed on two lateral sides of the protection member near one side edge of the second positioning portion.

According to the above structure, the second positioning portion is a side bottom portion connected by two side portion edges, the side bottom portion is disposed at the same side as the combining side portion and lower than the combining side portion, so that a lower gap with a height difference is formed between the side bottom portion and the combining side portion, at least one protruding elastic positioning portion is disposed on the side bottom portion, a corresponding positioning hole is disposed on the first section of the metal elastic sheet, and after the first section passes through the lower gap, the elastic positioning portion can be embedded into the positioning hole, so that the first section of the metal elastic sheet is combined and fixed on the combining side portion and the side bottom portion.

According to the structure, the conductive sheet is respectively provided with side concave parts at least one side near the two end parts, and the side concave parts can be sleeved on the part of at least one side part of the protection piece near the contact side part and form tight combination, so that the protection piece can form positioning which cannot move along the axial direction of the conductive sheet.

Drawings

Fig. 1 is a perspective combination external view of a first embodiment of the present invention.

Fig. 2 is a perspective exploded structural view of the first embodiment of the present invention.

Fig. 3 is a schematic diagram illustrating an action of the metal elastic sheet pushed by an external lead according to the first embodiment of the present invention.

Fig. 4 is a schematic view illustrating a state of the metal dome after an external lead is inserted according to the first embodiment of the present invention.

Fig. 5 is a perspective exploded structural view of a second embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating an action of the metal elastic piece pushed by the insertion of an external lead according to the second embodiment of the present invention.

Fig. 7 is a schematic view illustrating a state of a metal dome after an external lead is inserted according to a second embodiment of the invention.

Fig. 8 is a perspective exploded structural view of a third embodiment of the present invention.

Fig. 9 is a schematic diagram illustrating an action of the metal elastic piece pushed by the insertion of the external lead according to the third embodiment of the invention.

Fig. 10 is a schematic view illustrating a state of a metal dome after an external lead is inserted according to a third embodiment of the invention.

Fig. 11 is a perspective exploded structural view of a fourth embodiment of the present invention.

Fig. 12 is a schematic diagram illustrating an action of the metal dome of the fourth embodiment of the invention being pushed by an external lead.

Fig. 13 is a schematic view illustrating a state of a metal dome after an external lead is inserted according to a fourth embodiment of the invention.

Fig. 14 is a perspective exploded structural view of a fifth embodiment of the present invention.

Fig. 15 is a schematic diagram illustrating an action of the metal elastic piece pushed by an external lead according to the fifth embodiment of the present invention.

Fig. 16 is a schematic view illustrating a state of the metal dome after an external lead is inserted according to a fifth embodiment of the present invention.

Fig. 17 is a perspective exploded structural view of a sixth embodiment of the present invention.

Fig. 18 is a schematic diagram illustrating an action of the metal elastic piece pushed by an external lead according to the sixth embodiment of the present invention.

Fig. 19 is a schematic view illustrating a state of a metal dome after an external lead is inserted according to a sixth embodiment of the invention.

Fig. 20 is a perspective combination external view of the seventh embodiment of the present invention.

Fig. 21 is a perspective exploded structural view of a seventh embodiment of the present invention.

Fig. 22 is a schematic diagram illustrating an action of the metal elastic sheet of the seventh embodiment of the invention pushed by the insertion of the external lead.

Fig. 23 is a schematic view illustrating a state of a metal dome after an external lead is inserted according to a seventh embodiment of the invention.

Fig. 24 is a three-dimensional exploded structural view of a conventional track terminal.

Fig. 25 is a perspective assembled external view of the structure of fig. 24 joined by welding.

FIG. 26 is a side cross-sectional view of the FIG. 24 structure engaged via a securing assembly.

Description of the symbols in the drawings:

1. 1a, 1b, 1c, 1d, 1e and 4 are protective pieces;

11. 11a, 11b, 11c, 11d, 11e, 41 are contact side portions;

12. 12a, 12b, 12c, 12d, 12e, 42 are combined side parts;

121. 121a, 121b, 121c, 121d, 121e, 4211 are elastic positioning parts;

13. 13a, 13b, 13c, 13d, 13e, 43 are lateral parts;

131. 131a, 131b, 131c, 131d, 131e, 431 are first positioning portions;

132a, 132b are side stops;

14. 14a, 14b, 14c, 14d, 14e, 44 are assembly channels;

141. 141a, 141b, 141c, 141d, 141e, 441 are incoming line ends;

132c, 132d, 132e, 15a, 15b, 421 are second positioning parts;

15c, 15d, 15e are gaps;

151 is a hollow slot;

151a is a convex shrapnel;

2. 7 is a conducting strip;

21 is an arc edge;

22 is a lateral concavity;

23 is the inner side;

3. 3a is a metal elastic sheet;

31. 31a is a first segment;

311 is a second positioned part;

312. 312a is a positioning hole;

313. 313a is a first positioned part;

32. 32a is a second segment;

321. 321a is an elastic end;

33. 33a is a bending elastic part;

423 is a lower gap;

71 is a notch;

72 is a cantilever;

73 is a shoulder;

81 is a first side;

82 is a second edge;

821. 841 is a concave part;

83 is a third side;

84 is the fourth side;

85 is a secondary side;

86 is an opening;

80 is a welding spot;

800 is a fixed component;

9 is a metal elastic sheet;

91 is the first stage;

92 is a second segment;

93 is a head end;

94 is the tail end;

941. 942 is a side projection;

95 is a finger;

a is a conducting wire.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 4, it can be seen that the main structure of the first embodiment of the present invention includes: a protection member 1, a conductive sheet 2 and a metal spring 3; the protector 1 has two corresponding contact side portions 11 and a combination side portion 12, two side portions 13 are respectively disposed beside the combination side portion 12 and extend to and are connected to two sides of the contact side portion 11 to define an assembly channel 14 penetrating through the protector 1, one end of the assembly channel 14 is set as an inlet end 141, the inlet end 141 is respectively provided with a first positioning portion (such as a side groove) 131 at a portion where the combination side portion 12 and the two side portions 13 are joined, and one end of the protector 1 away from the first positioning portion 131 is provided with a second positioning portion 15, and the combination side portion 12 is provided with at least one elastic positioning portion 121 protruding toward the assembly channel 14.

In one possible embodiment, the second positioning portion 15 is a stopping piece bent downward from the edge of the combining side portion 12 toward the assembling passage 14, and a hollow slot 151 is formed in one side of the stopping piece close to the combining side portion 12; the elastic positioning portion 121 is a protruding positioning elastic sheet formed by press molding.

One end of the conducting strip 2 extends into the assembling channel 14 of the protecting piece 1 and is attached and fixed on the inner surface of the contact side part 11; in one possible embodiment, the two sides of the conducting strip 2 near the two end portions are respectively provided with a side concave portion 22, the two side concave portions 22 can be sleeved on the two side portions 13 of the protecting member 1 near the contact side portion 11, and the conducting strip 2 is attached to the inner side of the contact side portion 11, so that the protecting member 1 is positioned in a manner that the conducting strip 2 cannot move axially, an inner side surface 23 is formed on a side surface of the conducting strip 2 far from the contact side portion 11, and the two end portions of the conducting strip 2 are respectively provided with an arc-shaped edge 21 which is bent and extended towards a direction far from the assembling channel 14.

In practical application, the conductive plate 2 can be fixed by engaging the side recess 22 with the protection member 1, and can also be linked and fixed by other structures and methods, so that it has better multi-directional positioning effect.

The metal elastic sheet 3 has a first section 31 and a second section 32, and a bending elastic part 33 is disposed between the first section 31 and the second section 32 to make the metal elastic sheet 3 approximately bent in a U-shape, a first positioned part (e.g. a side convex part expanding outwards) 313 is disposed on two sides of the first section 31 of the metal elastic sheet 3 near the middle section, and a positioning hole 312 corresponding to the elastic positioning part 121 is disposed on the first section 31.

In one possible embodiment, the tail end of the first section 31 of the metal elastic sheet 3 is provided with a second positioned portion (e.g. end convex portion) 311, and the tail end of the second section 32 is provided with an elastic end portion 321 curved toward the contact side portion 11.

During assembly, after the conductive plate 2 is combined with the protection member 1, the metal dome 3 can be inserted into the assembly channel 14 in a manner that the first section 31 is attached to the combining side portion 12, the second positioning portion 15 (blocking piece) is used to block the tail end of the first section 31 of the metal dome 3, at this time, the second positioned portion 311 is embedded into the hollow slot 151, the elastic positioning portion 121 (positioning dome) is inserted into the positioning hole 312, and the two first positioned portions 313 are respectively and exactly fixed to the two first positioning portions 131, so that the metal dome 3 can be effectively positioned with the combining side portion 12 of the protection member 1 through the first section 31, and stable connection and combination are formed; meanwhile, the second section 32 of the metal dome 3 abuts against the inner side 23 of the conducting strip 2 with the elastic end 321.

When the external conducting wire a is inserted into the assembly channel 14 from a side close to the first positioning portion 131, the second section 32 of the metal elastic sheet 3 is pushed to compress the bent elastic portion 33 to generate elastic deformation, and after the conducting wire a passes through the elastic end portion 321, the elastic end portion 321 of the second section 32 cooperates with the inner side surface 23 of the conducting sheet 2 under the elastic restoring action of the bent elastic portion 33 to clamp the conducting wire a together to form conduction; if the wire a is pulled by an external force, the second section 32 is gradually forced toward the wire a in the process that the wire a drives the second section 32 to move in the opposite direction, so as to effectively prevent the wire a from loosening outwards.

In the above structure of the present embodiment, the combination of the first positioning portion 131, the elastic positioning portion 121 (positioning spring piece), the hollow slot 151 of the second positioning portion 15, the first to-be-positioned portion 313, the positioning hole 312, and the second to-be-positioned portion 311 can form a multi-position positioning between the first section 31 of the metal spring piece 3 and the combining side portion 12 of the protection member 1; as shown in fig. 4, when the conductive wire a is pulled by an external force, the first section 31 of the metal elastic sheet 3 bears a clockwise moment, and at this time, the design that the second positioning portion 15 (e.g., the hollow slot 151) is sleeved with the second positioned portion 311 can effectively reduce the force of the positioning hole 312 acting on the elastic positioning portion 121, so as to reduce the probability of the elastic positioning portion 121 deforming under the force, thereby achieving the combined effect of being more stable and not easy to loosen.

As shown in fig. 5 to 7, it can be seen that the structure of the second embodiment of the present invention includes: a protection member 1a, a metal dome 3a, and the same conductive sheet 2 as the first embodiment; the protector 1a has a contacting side portion 11a and a combining side portion 12a opposite to each other, two side portions 13a are respectively disposed beside the combining side portion 12a and extend to and are connected to two sides of the contacting side portion 11a to define an assembling passage 14a penetrating through the protector 1a, one end of the assembling passage 14a is set as a wire inlet end 141a, a first positioning portion (side groove) 131a is recessed at a portion where the combining side portion 12a and the two side portions 13a are joined, a second positioning portion 15a is disposed at a side of the protector 1a away from the first positioning portion 131a, and an elastic positioning portion 121a protruding toward the assembling passage 14a is disposed on the combining side portion 12 a.

In one possible embodiment, the second positioning portion 15a is a stop piece bent downward from the edge of the combining side portion 12a toward the assembling passage 14a, an upper convex elastic sheet 151a protruding obliquely toward the combining side portion 12a is formed by punching at the middle section of the stop piece, and a gap is left between the upper convex elastic sheet 151a and the combining side portion 12 a; the elastic positioning portion 121a is a protruding positioning elastic sheet formed by press molding, and side blocking portions 132a bent toward the assembly passage 14a are respectively disposed at one side edge of the two lateral portions 13a close to the second positioning portion 15a (blocking piece), and the two side blocking portions 132a respectively abut against the two lateral outer sides of the second positioning portion 15a (blocking piece).

The conductive plate 2 is assembled and fixed to the inner surface of the contact side 11a of the protector 1a in the same manner as the first embodiment described above.

The metal elastic sheet 3a has a first section 31a and a second section 32a, and a bending elastic part 33a is arranged between the first section 31a and the second section 32a, so that the metal elastic sheet 3a is approximately bent in a U shape, two sides of the first section 31a of the metal elastic sheet 3a near the middle section are respectively provided with a first positioned part (such as a side convex part) 313a which is expanded outwards, and the first section 31a is provided with a positioning hole 312a corresponding to the elastic positioning part 121 a; at the rear end of the second segment 32a, an elastic end portion 321a curved toward the contact side portion 11a is provided.

During assembly, after the conductive plate 2 is combined with the protection member 1a, the metal elastic sheet 3a can be inserted into the assembly channel 14a in a manner that the first section 31a is attached to the combining side portion 12a, the second positioning portion 15a (stopping piece) is used to block the tail end of the first section 31a of the metal elastic sheet 3a, the tail end of the first section 31a is directly embedded into the gap between the upper convex elastic sheet 151a and the combining side portion 12a, and the elastic positioning portion 121a (positioning elastic sheet) is used to extend into the positioning hole 312a, and the two first positioned portions (side protrusions) 313a can be respectively positioned in the two first positioning portions (side grooves) 131a, so that the metal elastic sheet 3a can form stable connection and combination with the combining side portion 12a of the protection member 1a through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a is abutted against the inner side 23 of the conducting strip 2 by the elastic end 321 a.

When the external lead a is inserted into the assembly channel 14a from a side close to the first positioning portion (side groove) 131a, the second section 32a of the metal spring piece 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the lead a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a cooperates with the inner side surface 23 of the conductive sheet 2 to clamp the lead a together to form conduction under the elastic restoring elastic action of the bent elastic portion 33 a; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

As shown in fig. 8 to 10, it can be seen that the structure of the third embodiment of the present invention includes: a protection member 1b, and the same conductive sheet 2 and metal dome 3a as those of the second embodiment; the protector 1b has a contacting side portion 11b and a combining side portion 12b opposite to each other, two side portions 13b are respectively disposed beside the combining side portion 12b and extend to and are connected to two sides of the contacting side portion 11b to define an assembling passage 14b penetrating through the protector 1b, one end of the assembling passage 14b is set as a wire inlet end 141b, a first positioning portion (side groove) 131b is respectively disposed at a portion where the combining side portion 12b and the two side portions 13b are joined, a second positioning portion 15b is disposed at a side of the protector 1b far from the first positioning portion (side groove) 131b, and an elastic positioning portion 121b protruding toward the assembling passage 14b is disposed on the combining side portion 12 b.

In one possible embodiment, the second positioning portion 15b is a bent plate extending into the assembly passage 14b and bending toward the first positioning portion (side groove) 131b, and side stopping portions 132b bending toward the assembly passage 14b are respectively disposed at one side edges of the two lateral portions 13b close to the second positioning portion 15b (bent plate), and the side stopping portions 132b respectively abut against the bottom sides of the second positioning portion 15b (bent plate).

The conductive plate 2 is assembled and fixed to the inner surface of the contact side portion 11b of the protector 1b in the same manner as the first embodiment described above.

When assembling, after the conductive sheet 2 is combined with the protection member 1b, the metal elastic sheet 3a can be inserted into the assembly channel 14b in a manner that the first section 31a is attached to the combining side portion 12b, the second positioning portion 15b (bending sheet) is clamped at the tail end of the first section 31a of the metal elastic sheet 3a, and then the elastic positioning portion 121b (positioning elastic sheet) is inserted into the positioning hole 312a, and the two first positioned portions (side protrusions) 313a can be respectively inserted into the two first positioning portions (side grooves) 131b, so that the metal elastic sheet 3a can form a stable connection combination with the combining side portion 12b of the protection member 1b through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a abuts against the inner side 23 of the conducting strip 2 with the elastic end 321 a.

When the external conducting wire a is inserted into the assembly channel 14b from a side close to the first positioning portion (side groove) 131b, the second section 32a of the metal elastic piece 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the conducting wire a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a cooperates with the inner side surface 23 of the conducting strip 2 to clamp the conducting wire a together to form conduction under the elastic restoring elastic action of the bent elastic portion 33 a; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

As shown in fig. 11 to 13, it can be seen that the structure of the fourth embodiment of the present invention includes: a protection member 1c, and the same conductive sheet 2 and metal dome 3a as those of the second embodiment; the protector 1c has a contacting side portion 11c and a combining side portion 12c opposite to each other, two side portions 13c are respectively disposed beside the combining side portion 12c and extend to and are connected to two sides of the contacting side portion 11c to define an assembling passage 14c penetrating through the protector 1c, one end of the assembling passage 14c is set as a wire inlet end 141c, a first positioning portion (side groove) 131c is respectively disposed at a portion where the combining side portion 12c and the two side portions 13c are joined, a second positioning portion 132c is disposed at an end of the protector 1c away from the first positioning portion (side groove) 131c, and an elastic positioning portion 121c protruding toward the assembling passage 14c is disposed on the combining side portion 12 c.

In one possible embodiment, the second positioning portion 132c is a side blocking portion bent toward the group of the passages 14c from the two lateral side portions 13c to a side edge away from the first positioning portion (side groove) 131c, and a gap 15c is left between the second positioning portion 132c (two side blocking portions) and the combining side portion 12 c.

The conductive plate 2 is fixedly attached to the inner surface of the contact side portion 11c of the protector 1c in the same manner as the first embodiment described above.

During assembly, after the conductive sheet 2 is combined with the protection member 1c, the metal elastic sheet 3a can be inserted into the assembly channel 14c in a manner that the first section 31a is attached to the combining side portion 12c, the tail end of the first section 31a directly penetrates through the gap 15c, and then the elastic positioning portion 121c (positioning elastic sheet) is inserted into the positioning hole 312a in cooperation with the elastic positioning portion, and the two first positioned portions (side protrusions) 313a can be respectively combined into the two first positioning portions (side grooves) 131c, so that the metal elastic sheet 3a can form stable connection and combination with the combining side portion 12c of the protection member 1c through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a abuts against the inner side 23 of the conducting strip 2 with the elastic end 321 a.

When the external lead a is inserted into the assembly channel 14c from a side close to the first positioning portion (side groove) 131c, the second section 32a of the metal spring piece 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the lead a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a cooperates with the inner side surface 23 of the conductive sheet 2 to clamp the lead a together to form conduction under the elastic restoring elastic action of the bent elastic portion 33 a; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

As shown in fig. 14 to 16, it can be seen that the structure of the fifth embodiment of the present invention includes: a protection member 1d, and the same conductive sheet 2 and metal dome 3a as those of the second embodiment; the protection member 1d has a contacting side portion 11d and a combining side portion 12d opposite to each other, two side portions 13d are respectively disposed beside the combining side portion 12d and extend to and are connected to two sides of the contacting side portion 11d to define an assembling passage 14d penetrating through the protection member 1d, one end of the assembling passage 14d is a wire inlet end 141d, a first positioning portion (side groove) 131d is respectively disposed at a portion where the combining side portion 12d and the two side portions 13d are joined, a second positioning portion 132d is disposed at a side of the combining side portion 1d away from the first positioning portion (side groove) 131d, and an elastic positioning portion 121d protruding toward the assembling passage 14d is disposed on the combining side portion 12 d.

In one possible embodiment, the second positioning portion 132d is a side blocking portion that is disposed from the middle section of the two side portions 13d and is bent toward the assembling passage 14d, and a gap 15d is left between the second positioning portion 132d (the two side blocking portions) and the combining side portion 12 d.

The conductive plate 2 is assembled and fixed to the inner surface of the contact side portion 11d of the protector 1d in the same manner as the first embodiment described above.

When assembling, after the conductive sheet 2 is combined with the protection member 1d, the metal elastic sheet 3a can be inserted into the assembly channel 14d in a manner that the first section 31a is attached to the combining side portion 12d, the end surface of the first section 31a is utilized to directly penetrate through the gap 15d, and then the elastic positioning portion 121d (positioning elastic sheet) is matched to be inserted into the positioning hole 312a, and the two first positioned portions (side protrusions) 313a can be respectively combined into the two first positioning portions (side grooves) 131d, so that the metal elastic sheet 3a can form stable connection combination with the combining side portion 12d of the protection member 1d through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a is abutted against the inner side 23 of the conducting strip 2 by the elastic end 321 a.

When the external conducting wire a is inserted into the assembly channel 14d from a side close to the first positioning portion (side groove) 131d, the second section 32a of the metal elastic piece 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the conducting wire a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a cooperates with the inner side surface 23 of the conducting strip 2 to clamp the conducting wire a together to form conduction under the elastic restoring elastic action of the bent elastic portion 33 a; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

As shown in fig. 17 to 19, it can be seen that the structure of the sixth embodiment of the present invention includes: a protection member 1e, and the same conductive sheet 2 and metal dome 3a as those of the second embodiment; the protection member 1e has a contacting side portion 11e and a combining side portion 12e opposite to each other, two side portions 13e are respectively disposed beside the combining side portion 12e and extend to and are connected to two sides of the contacting side portion 11e to define an assembling passage 14e penetrating through the protection member 1e, one end of the assembling passage 14e is set as a wire inlet end 141e, a first positioning portion (side groove) 131e is respectively recessed at a portion where the combining side portion 12e and the two side portions 13e are joined, a second positioning portion 132e is disposed at an end of the protection member 1e away from the first positioning portion (side groove) 131e, and an elastic positioning portion 121e protruding toward the assembling passage 14e is disposed on the combining side portion 12 e.

In one possible embodiment, the second positioning portion 132e is a side blocking portion bent from the middle of the two side portions 13e toward the combining side portion 12e, and a gap 15e is left between the second positioning portion 132e (the two side blocking portions) and the combining side portion 12 e.

The conductive plate 2 is assembled and fixed to the inner surface of the contact side portion 11e of the protector 1e in the same manner as the first embodiment described above.

When assembling, after the conducting strip 2 is combined with the protecting member 1e, the metal elastic sheet 3a can be inserted into the assembly passage 14e in a manner that the first section 31a is attached to the combining side portion 12e, the end surface of the first section 31a is utilized to directly penetrate through the gap 15e, and then the elastic positioning portion 121e (positioning elastic sheet) is matched to be inserted into the positioning hole 312a, and the two first positioned portions (side protrusions) 313a can be respectively combined with the two first positioning portions (side grooves) 131e, so that the metal elastic sheet 3a can form stable connection combination with the combining side portion 12e of the protecting member 1e through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a abuts against the inner side 23 of the conducting strip 2 with the elastic end 321 a.

When the external lead a is inserted into the assembly channel 14e from a side close to the first positioning portion (side groove) 131e, the second section 32a of the metal spring piece 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the lead a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a cooperates with the inner side surface 23 of the conductive sheet 2 to clamp the lead a together to form conduction under the elastic restoring elastic action of the bent elastic portion 33 a; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

As shown in fig. 20 to 23, it can be seen that the structure of the seventh embodiment of the present invention includes: a protection member 4, and the same conductive sheet 2 and metal dome 3a as those of the second embodiment; the protection member 4 has a contact side portion 41 and a combination side portion 42 opposite to each other, two side portions 43 are respectively disposed beside the combination side portion 42 and extend to and are connected to two sides of the contact side portion 41, so as to define an assembly channel 44 penetrating through the protection member 4, one end of the assembly channel 44 is set as a wire inlet end 441, a first positioning portion (side groove) 431 is respectively disposed at a portion where the combination side portion 42 and the two side portions 43 are joined, and a second positioning portion 421 is disposed at an end of the protection member 4 away from the first positioning portion (side groove) 431.

In one possible embodiment, the second positioning portion 421 is a side bottom portion connected by the edges of the two side portions 43, the side bottom portion is disposed on the same side as the combining side portion 42 and lower than the combining side portion 42, so that a lower gap 423 with a height difference is formed between the side bottom portion and the combining side portion 42, and at least one protruding elastic positioning portion 4211 is disposed on the second positioning portion 421 (side bottom portion).

The conductive plate 2 is assembled and fixed to the inner surface of the contact side 41 of the protector 4 in the same manner as the first embodiment described above.

When assembling, after the conductive sheet 2 and the protection member 4 are combined, the metal elastic sheet 3a can be inserted into the assembly channel 44 in a manner that the first section 31a is attached to the combining side portion 42, the end surface of the first section 31a directly penetrates through the lower gap 423, and the elastic positioning portion 4211 is embedded into the positioning hole 312a, and the two first positioned portions (side protrusions) 313a can be respectively combined with the two first positioning portions (side grooves) 431, so that the metal elastic sheet 3a can form a stable connection combination with the combining side portion 42 and the second positioning portion 421 (side bottoms) of the protection member 4 through the first section 31 a; meanwhile, the second section 32a of the metal spring 3a is abutted against the inner side 23 of the conducting strip 2 by the elastic end 321 a.

When the external conducting wire a is inserted into the assembly channel 44 from a side close to the first positioning portion (side groove) 431, the second section 32a of the metal elastic sheet 3a is pushed to compress the bent elastic portion 33a to generate elastic deformation, and after the conducting wire a passes through the elastic end portion 321a, the elastic end portion 321a of the second section 32a is matched with the inner side surface 23 of the conducting sheet 2 under the elastic restoring action of the bent elastic portion 33a to clamp the conducting wire a together to form conduction; if the wire a is pulled by an external force, the second section 32a is gradually forced toward the wire a in the process that the wire a drives the second section 32a to move in the reverse direction, so as to effectively prevent the wire a from loosening outwards.

The combined structure of the track terminal of the invention can achieve simple and convenient combination of the protection piece and the metal elastic sheet, improve the positioning effect between the protection piece and the metal elastic sheet, effectively improve the limitation that the assembly of the metal elastic sheet still depends on the assistance of the conducting sheet, further just provide the wire inlet direction formed by the combination of the protection piece and the conducting sheet, and carry out different angle adjustment (such as the angle change shown by the imaginary line in figure 1) according to the requirement so as to adapt to the requirement of different insertion angles of external wires, thus being a novel and creative creation.

In summary, the above embodiments and drawings are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A track terminal assembly, comprising:

the protective piece is composed of two opposite contact side parts, a combination side part and two side parts arranged between the combination side parts and the contact side parts, and an assembling channel penetrating through the protective piece is defined, the assembling channel is provided with an incoming line end, the incoming line end is provided with a first positioning part, one end far away from the first positioning part is provided with a second positioning part, the second positioning part is a stop piece bent from the edge of the combination side part towards the assembling channel, and one side of the stop piece close to the combination side part is provided with a hollow slot hole;

a conductive sheet, which has one end extending into the assembling channel of the protection member and is fixed on the inner surface of the contact side portion in an attaching manner;

a metal spring plate having a first section and a second section, the stopping piece is blocked at the tail end of the first section of the metal spring plate, the tail end of the first section of the metal spring plate is provided with a corresponding end convex part, the end convex part is embedded into the hollow slot hole to form positioning, a bent elastic part is arranged between the first section and the second section to make the metal spring plate bend approximately in a U shape, a first positioned part is arranged at the position of the first section of the metal spring plate close to the bent elastic part, and a second positioned part which is matched and fixedly connected is arranged at the position of the first section corresponding to the second positioned part to make the first section of the metal spring plate extend into the assembly channel in a mode of attaching to the combining side part and is combined at the first positioned part by the first positioned part positioned and combined at the second positioned part, so that the metal spring plate and the second positioned part have the capability of mutual fixed combination, and the second section of the metal elastic sheet extends towards the contact side part and is pressed and contacted with the end part of the conducting sheet extending into the assembly channel.

2. The combination structure of track terminal as claimed in claim 1, wherein the first positioning portion is formed by providing side grooves at the connecting portion of the connecting side portion and the two side portions, and the first positioned portion is formed by providing corresponding side protrusions at the metal spring.

3. The combination structure of track terminal as claimed in claim 1 or 2, wherein the conductive plate has side recesses respectively formed on at least one side of the conductive plate near the two ends, and the side recesses can be fitted on at least one side of the protection member near the contact side to form a tight joint, so that the protection member can be positioned in a position where it cannot move axially along the conductive plate.

4. The combination structure of track terminal as claimed in claim 1 or 2, wherein the second end face of the metal spring plate is provided with an elastic end portion curved toward the contact side portion.

5. The combination structure of track terminal as claimed in claim 1 or 2, wherein the conductive sheet has at least two ends, and the two ends are folded and extended in different directions respectively, so that the line inlet ends of the protection members at the two ends face in different directions.

6. A track terminal assembly, comprising:

a protection piece, which is composed of a contact side part and a combination side part which are opposite to each other, and two lateral side parts which are arranged between the combination side part and the contact side part, and is used for defining an assembly channel which penetrates through the protection piece, wherein the assembly channel is provided with an incoming line end, the incoming line end is provided with a first positioning part, one end far away from the first positioning part is provided with a second positioning part, the second positioning part is a stop piece bent from the edge of the combination side part towards the assembly channel, the middle section of the stop piece is provided with an upper convex elastic sheet which is inclined and protruded towards the combination side part, and a gap is reserved between the upper convex elastic sheet and the combination side part;

the metal elastic sheet is provided with a first section and a second section, the stopping piece blocks the tail end of the first section of the metal elastic sheet, the tail end of the first section of the metal elastic sheet is directly embedded into the gap to form positioning, a bent elastic part is arranged between the first section and the second section to enable the metal elastic sheet to be bent approximately in a U shape, a first positioned part is arranged at the position, close to the bent elastic part, of the first section of the metal elastic sheet, a second positioned part matched and fixedly connected is arranged at the position, corresponding to the second positioned part, of the first section of the metal elastic sheet, the first section of the metal elastic sheet can extend into the assembling channel in a mode of being attached to the combining side part, the first positioned part is fixedly combined at the first positioning part, the second positioned part is fixedly combined at the second positioning part, the metal elastic sheet and the protecting piece have the capability of mutually fixing and combining, and the second section of the metal elastic sheet extends towards the contacting side part and is pressed at the end part extending into the assembling channel.

7. The combination structure of claim 6, wherein the edge of one side of the two side portions of the protection member close to the second positioning portion is respectively provided with a side blocking portion bending towards the assembling passage, and the two side blocking portions respectively abut against the two side outer sides of the blocking piece.

8. The structure of claim 6 or 7, wherein the first positioning portion is formed with side grooves at the connecting portion of the connecting side portion and the two side portions, and the first positioned portion is formed with corresponding side protrusions at the metal spring piece.

9. The combination structure of claim 6 or 7, wherein the conductive plate has side recesses respectively formed on at least one side of the conductive plate near the two ends, and the side recesses can be fitted on at least one side of the protection member near the contact side to form a tight joint, so that the protection member can be positioned in a position where the protection member cannot move axially along the conductive plate.

10. The combination structure of track terminal as claimed in claim 6 or 7, wherein the second end face of the metal spring plate is provided with an elastic end portion curved toward the contact side portion.

11. The combination structure of track terminal as claimed in claim 6 or 7, wherein the conductive sheet has at least two ends, and the two ends are folded and extended in different directions respectively, so that the line inlet ends of the protection members at the two ends face in different directions.

12. A track terminal assembly, comprising:

a protection piece, which is composed of two opposite contact side parts and a combination side part, and two side parts arranged between the combination side parts and the contact side parts, and defines an assembly channel penetrating through the protection piece, wherein the assembly channel is provided with an incoming line end, the incoming line end is provided with a first positioning part, one end far away from the first positioning part is provided with a second positioning part, the second positioning part is a bending piece extending into the assembly channel and bending towards the incoming line end, the two side parts of the protection piece are close to one side edge of the second positioning part, and are respectively provided with side blocking parts bending towards the assembly channel, and the two side blocking parts are respectively abutted against the bottom sides of the bending piece;

a metal spring plate having a first section and a second section, the bent plate clamping the end of the first section of the metal spring plate to form a location, a bending elastic part is arranged between the first section and the second section to make the metal elastic sheet approximately bent in a U shape, a first positioned part is arranged at the first section of the metal elastic sheet close to the bending elastic part, and a second positioned part which is matched and fixedly connected is arranged at the position of the first section corresponding to the second positioned part, so that the first section of the metal elastic sheet can extend into the assembly channel in a mode of attaching to the combined side part and is fixedly combined at the first positioned part by the first positioned part, the second positioning part is positioned and combined with the second positioning part, so that the metal elastic sheet and the protection piece have the capability of mutually fixing and combining, and the second section of the metal elastic sheet extends towards the contact side part and is pressed and contacted with the end part of the conducting sheet extending into the assembly channel.

13. The combination structure of claim 12, wherein the first positioning portion is formed with side grooves at the connecting portion of the connecting side portion and the two side portions, and the first positioned portion is formed with corresponding side protrusions at the metal spring.

14. The combination structure of claim 12 or 13, wherein the conductive plate has side recesses on at least one side near the two ends, and the side recesses can be fit over the protection member at least one side near the contacting side to form a tight joint, so that the protection member can be positioned in a position that is not movable along the axial direction of the conductive plate.

15. The combination structure of track terminal as claimed in claim 12 or 13, wherein the second end face of the metal spring plate is provided with an elastic end portion curved toward the contact side portion.

16. The combination structure of track terminal as claimed in claim 12 or 13, wherein the conductive sheet has at least two ends, and the two ends are folded and extended in different directions respectively, so that the line inlet ends of the protection members at the two ends face in different directions.

17. A track terminal assembly, comprising:

the protective piece is composed of two opposite contact side parts, a combination side part and two side parts arranged between the combination side part and the contact side part, and an assembling channel penetrating through the protective piece is defined, the assembling channel is provided with an incoming line end, the incoming line end is provided with a first positioning part, one end far away from the first positioning part is provided with a second positioning part, the second positioning part is a side blocking part which is arranged on the two side parts of the protective piece and respectively bends towards the assembling channel, and a gap is reserved between the two side blocking parts and the combination side part;

a metal elastic sheet having a first section and a second section, the tail end of the first section of the metal elastic sheet directly penetrates through the gap to form a positioning, a bending elastic part is arranged between the first section and the second section to make the metal elastic sheet approximately bent in a U shape, a first positioned part is arranged at the first section of the metal elastic sheet close to the bending elastic part, and a second positioned part which is matched and fixedly connected is arranged at the position of the first section corresponding to the second positioned part, so that the first section of the metal elastic sheet can extend into the assembly channel in a mode of attaching to the combined side part and is fixedly combined at the first positioned part by the first positioned part, the second positioning part is positioned and combined with the second positioning part, so that the metal elastic sheet and the protection piece have the capability of mutually fixing and combining, and the second section of the metal elastic sheet extends towards the contact side part and is pressed and contacted with the end part of the conducting sheet extending into the assembly channel.

18. The track terminal assembly as claimed in claim 17, wherein the side blocking portion is disposed on two side portions of the protecting member near a side edge of the second positioning portion.

19. The combination structure of track terminal as claimed in claim 17 or 18, wherein the first positioning portion is formed by providing side grooves at the connecting portion of the connecting side portion and the two side portions, and the first positioned portion is formed by providing corresponding side protrusions at the metal elastic sheet.

20. The combination structure of claim 17 or 18, wherein the conductive plate has side recesses on at least one side near the two ends, and the side recesses can be fit over the protection member at least one side near the contacting side to form a tight joint, so that the protection member can be positioned in a position that is not movable along the axial direction of the conductive plate.

21. The combination structure of track terminal as claimed in claim 17 or 18, wherein the second end face of the metal spring plate is provided with an elastic end portion curved toward the contact side portion.

22. The combination structure of track terminal as claimed in claim 17 or 18, wherein the conductive sheet has at least two ends, and the two ends are folded and extended in different directions respectively, so that the line inlet ends of the protection members at the two ends face in different directions.

23. A track terminal assembly, comprising:

a protection piece, which is composed of two opposite contact side parts and a combination side part, and two side parts arranged between the combination side part and the contact side part, and defines an assembly channel penetrating through the protection piece, wherein the assembly channel is provided with an incoming line end, the incoming line end is provided with a first positioning part, one end far away from the first positioning part is provided with a second positioning part, the second positioning part is a side bottom connected by the edges of the two side parts, the side bottom is arranged at the same side with the combination side part and is lower than the combination side part, so that a lower gap with a height difference is formed between the side bottom and the combination side part, and the side bottom is provided with at least one convex elastic positioning part;

a metal spring plate having a first section and a second section, the first section of the metal spring plate is provided with a corresponding positioning hole, after the first section passes through the lower gap, the elastic positioning part can be embedded into the positioning hole, so that the first section of the metal spring plate is combined and fixed on the combining side part and the side bottom, a bent spring part is arranged between the first section and the second section, so that the metal spring plate is approximately bent in a U shape, a first positioned part is arranged at the first section of the metal spring plate close to the bent spring part, a second positioned part which is matched and fixedly connected is arranged at the first section corresponding to the second positioning part, so that the first section of the metal spring plate can extend into the assembling channel in a mode of being attached to the combining side part, and is combined at the first positioning part in a positioning mode by the first positioned part, and is combined at the second positioning part in a positioning mode, so that the metal spring plate and the protecting part are combined, the second section of the metal elastic sheet extends towards the contact side part and is in press contact with the end part of the conducting sheet extending into the assembly channel.

24. The combination structure of claim 23, wherein the first positioning portion is formed with side grooves at the connecting portion of the connecting side portion and the two side portions, and the first positioned portion is formed with corresponding side protrusions at the metal spring.

25. The combination structure of claim 23 or 24, wherein the conductive plate has side recesses on at least one side near the two ends, and the side recesses can be fit over the protection member at least one side near the contacting side to form a tight joint, so that the protection member can be positioned in a position that is not movable along the axial direction of the conductive plate.

26. The combination structure of track terminal as claimed in claim 23 or 24, wherein the second end face of the metal spring plate is provided with an elastic end portion curved toward the contact side portion.

27. The combination structure of track terminal as claimed in claim 23 or 24, wherein the conductive sheet has at least two ends, and the two ends are folded and extended in different directions respectively, so that the line inlet ends of the protection members at the two ends face in different directions.