CN220229042U

CN220229042U - Electric connecting device and two-wire track lamp assembly

Info

Publication number: CN220229042U
Application number: CN202321706328.6U
Authority: CN
Inventors: 张望
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-12-22
Anticipated expiration: 2033-06-30

Abstract

The utility model relates to the technical field of lamps and lanterns, and provides an electric connection device and a two-wire track lamp assembly, wherein the electric connection device comprises: a flexible connection portion, a first mounting portion, a second mounting portion, a first electrical contact portion, and a second electrical contact portion; the flexible connecting part is connected between the first mounting part and the second mounting part, the first mounting part is provided with a first mounting surface, the second mounting part is provided with a second mounting surface, the first electric contact part is arranged on the first mounting surface, the second electric contact part is arranged on the second mounting surface, and the first electric contact part and the second electric contact part are electrically connected; the first mounting surface is also provided with a first connecting part used for being connected with the track, and the second mounting surface is also provided with a second connecting part used for being connected with the track. The two mounting parts can independently adjust the self-posture, so that the environment where the two rails are positioned is adapted; the first electric contact part is electrically connected with the second electric contact part, so that electric connection between the two tracks is realized; the mechanical connection between the two rails is achieved by the first connection and the second connection.

Description

Electric connecting device and two-wire track lamp assembly

Technical Field

The utility model relates to the technical field of lamps, in particular to an electric connection device and a two-wire track lamp assembly.

Background

The track lamp generally comprises a track and a light-emitting component, wherein a conductive strip is arranged on the track, so that the light-emitting component can acquire power supply after being clamped with the track, and the use is convenient. In some use scenarios, it is desirable to interface adjacent sections of track directly in a planar corner or in a spatial corner.

The heights of the two rails after being installed are possibly inconsistent, and at the moment, the two rails are difficult to be fully conducted; in addition, when two tracks are spliced, straightness or perpendicularity between the two tracks is difficult to ensure, and at the moment, the problem that the two tracks cannot be fully conducted is also solved.

Disclosure of Invention

The utility model provides an electric connection device and a two-wire track lamp assembly, which are used for solving the problem that in the prior art, two tracks are difficult to fully conduct.

The utility model provides an electrical connection device for connecting rails, comprising: a flexible connection portion, a first mounting portion, a second mounting portion, a first electrical contact portion, and a second electrical contact portion;

the flexible connecting part is connected between the first mounting part and the second mounting part, the first mounting part is provided with a first mounting surface, the second mounting part is provided with a second mounting surface, the first electric contact part is arranged on the first mounting surface, the second electric contact part is arranged on the second mounting surface, and the first electric contact part and the second electric contact part are electrically connected;

the first mounting surface is also provided with a first connecting part used for being connected with the track, and the second mounting surface is also provided with a second connecting part used for being connected with the track.

Optionally, each of the first electrical contact and the second electrical contact includes a printed circuit board, a positive contact, and a negative contact, the positive contact and the negative contact being disposed on the printed circuit board.

Optionally, the electrical connection device further includes a first electrical connector and a second electrical connector, the printed circuit board of the first electrical contact portion is connected with the printed circuit board of the second electrical contact portion through the first electrical connector, so as to realize electrical connection between the positive electrode contact of the first electrical contact portion and the positive electrode contact of the second electrical contact portion;

the printed circuit board of the first electrical contact is connected with the printed circuit board of the second electrical contact through the second electrical connector to realize the electrical connection of the negative contact of the first electrical contact with the negative contact of the second electrical contact.

Optionally, at least one of the positive electrode contact and the negative electrode contact is an elastic contact, and the elastic contact is a metal elastic sheet or an elastic thimble.

Optionally, each of the first mounting surface and the second mounting surface is provided with a mounting location for mating with the printed circuit board.

Optionally, each mounting position includes a buckle assembly, the buckle assembly includes at least one first buckle, each first buckle includes a stop portion and a buckling portion, and the printed circuit board is clamped between the buckling portion and the corresponding mounting surface.

Optionally, the buckle assembly includes a plurality of first buckles, and a plurality of stop parts enclose to form a mounting space, and the mounting space is matched with the printed circuit board;

each buckling part is provided with a guide surface and an abutting surface, and the printed circuit board is led between the abutting surface and the corresponding mounting surface through the guide surface.

Optionally, each mounting position further comprises a limiting part, and the limiting part is formed with a limiting space matched with the printed circuit board; and/or the number of the groups of groups,

and the printed circuit board is clamped between the buckling part and the corresponding supporting part, so that a gap is reserved between the printed circuit board and the corresponding mounting surface.

Optionally, each of the first connection portion and the second connection portion includes a second clip adapted to a clip groove of the track.

The present utility model also provides a two-wire track lamp assembly comprising: at least two tracks and an electrical connection device according to any one of the preceding claims;

the first electric contact part and the second electric contact part are respectively and electrically connected with the conductive parts of the corresponding tracks, and the first connecting part and the second connecting part are respectively connected with the corresponding tracks.

According to the electric connection device and the two-wire track lamp assembly, the first installation part and the second installation part are connected through the flexible connection part, and the first installation part and the second installation part can adjust the self-posture relatively and independently, so that the environment where the two tracks are located is adapted; the first electric contact part is electrically connected with the second electric contact part, so that the electric connection between the two tracks can be realized; the mechanical connection between the two rails can be achieved by the first connection and the second connection.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electrical connection device according to the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1;

FIG. 3 is one of the assembled schematic views of the electrical connection device provided by the present utility model;

FIG. 4 is a second schematic diagram of the assembly of the electrical connection device according to the present utility model;

FIG. 5 is a schematic diagram of a printed circuit board according to the present utility model;

FIG. 6 is a second schematic diagram of a printed circuit board according to the present utility model;

FIG. 7 is a schematic view of a mounting location provided by the present utility model;

fig. 8 is a schematic structural view of a first buckle provided by the present utility model;

FIG. 9 is a schematic diagram of a two-wire track light assembly provided by the present utility model;

fig. 10 is a B-B cross-sectional view of fig. 9.

Reference numerals:

100. a flexible connection portion;

200. a first mounting portion; 210. a first mounting surface; 220. a first connection portion;

300. a second mounting portion; 310. a second mounting surface; 320. a second connecting portion;

400. a first electrical contact;

500. a second electrical contact;

600. a printed circuit board; 610. a positive electrode contact; 620. a negative electrode contact; 630. a bonding pad;

701. a first electrical connection; 702. a second electrical connection;

800. a mounting position; 810. a clasp assembly; 811. a first buckle; 8111. a stop portion; 8112. a buckling part; 8112a, guide surface; 8112b, abutment surface; 8113. an installation space; 812. a limit part; 813. a limit space; 814. a support part;

900. a second buckle;

1101. a first track; 1102. and a second track.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, the term "and/or" in the description and claims means at least one of the connected objects.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "bottom side", "up and down", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "assembled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, an electrical connection device according to an embodiment of the present utility model is used for connecting two-wire tracks, and includes: a flexible connection part 100, a first mounting part 200, a second mounting part 300, a first electrical contact part 400, and a second electrical contact part 500.

The flexible connection part 100 is connected between the first installation part 200 and the second installation part 300, the first installation part 200 is provided with a first installation surface 210, the second installation part 300 is provided with a second installation surface 310, the first electrical contact part 400 is arranged on the first installation surface 210, the second electrical contact part 500 is arranged on the second installation surface 310, the first electrical contact part 400 and the second electrical contact part 500 can be respectively and electrically connected with the conductive parts of the corresponding tracks, and the first electrical contact part 400 and the second electrical contact part 500 are electrically connected, so that the circuit communication between the two tracks is realized.

The first mounting surface 210 refers to a surface of the first mounting portion 200 facing the corresponding rail when the electrical connection device is mounted in the rail. Similarly, the second mounting surface 310 refers to a surface of the second mounting portion 300 facing the corresponding rail.

The flexible connection unit 100 is used to connect the first mounting unit 200 and the second mounting unit 300, and the first mounting unit 200 is movable relative to the second mounting unit 300. The flexible connection part 100 may be made of flexible material, such as silica gel, and the good elasticity of the silica gel can be utilized to counteract mutual interference of the rails caused by uneven wall surfaces or insufficient mounting straightness and perpendicularity.

In addition, as shown in fig. 3 and 4, the flexible connection part 100 not only can vertically connect the first installation part 200 and the second installation part 300 in the same plane, but also can vertically connect the first installation part 200 and the second installation part 300 in different planes, so that the multi-angle connection of the electrical connection device can be realized, and different installation requirements can be adapted.

For example, when the first and second mounting parts 200 and 300 are connected in a straight line in the same plane, the first and second mounting parts 200 and 300 may be integrally provided with a mounting groove of a "convex" shape, and accordingly, the flexible connection part 100 is provided in a "concave" shape and is disposed in the mounting groove.

The first mounting surface 210 is further provided with a first connection portion 220 for connection with a rail, and the second mounting surface 310 is further provided with a second connection portion 320 for connection with a rail. Illustratively, each of the first and second connection portions 220, 320 includes first and second magnetically coupled connectors, one of which is provided to a corresponding mounting surface and the other of which is provided to a rail.

In the embodiment of the utility model, the first installation part 200 and the second installation part 300 are connected through the flexible connection part 100, and the first installation part 200 and the second installation part 300 can relatively and independently adjust the self-posture so as to adapt to the environment where the two rails are located; the first electrical contact 400 and the second electrical contact 500 are electrically connected, enabling an electrical connection between the two tracks; the mechanical connection between the two rails can be achieved by the first connection 220 and the second connection 320.

In an alternative embodiment, as shown in fig. 1-6, each of the first electrical contact 400 and the second electrical contact 500 includes a printed circuit board 600, a positive contact 610, and a negative contact 620, the positive contact 610 and the negative contact 620 being provided to the printed circuit board 600.

In the following description, the structure of the first electrical contact 400 is taken as an example, the printed circuit board 600 is disposed on the first mounting surface 210, the positive electrode contact 610 and the negative electrode contact 620 are disposed on one side of the printed circuit board 600 away from the first mounting surface 210, the positive electrode contact 610 and the negative electrode contact 620 are disposed on opposite sides of the printed circuit board 600, the positive electrode contact 610 corresponds to the positive electrode conductive portion of the track, and the negative electrode contact 620 corresponds to the negative electrode conductive portion of the track.

The positive contact 610 of the first electrical contact 400 is electrically connected to the positive contact 610 of the second electrical contact 500, and the negative contact 620 of the first electrical contact 400 is electrically connected to the negative contact 620 of the second electrical contact 500, so that the electrical circuit between the two rails is completed.

In an alternative embodiment, as shown in fig. 1, the electrical connection device further comprises a first electrical connector 701 and a second electrical connector 702, the printed circuit board 600 of the first electrical contact 400 is connected to the printed circuit board 600 of the second electrical contact 500 by the first electrical connector 701, so as to achieve an electrical connection of the positive contact 610 of the first electrical contact 400 with the positive contact 610 of the second electrical contact 500.

Similarly, the printed circuit board 600 of the first electrical contact 400 is connected to the printed circuit board 600 of the second electrical contact 500 by means of the second electrical connection 702, so as to achieve an electrical connection of the negative contact 620 of the first electrical contact 400 to the negative contact 620 of the second electrical contact 500.

It will be appreciated that the printed circuit board 600 of the first electrical contact 400 is provided with a first conductive layer connected to the positive contact 610 of the first electrical contact 400, and the printed circuit board 600 of the second electrical contact 500 is provided with a second conductive layer connected to the positive contact 610 of the second electrical contact 500, and the first conductive layer is connected to the second conductive layer by the first electrical connector 701. A third conductive layer connected to the negative contact 620 of the first electrical contact 400 is provided in the printed circuit board 600 of the first electrical contact 400, a fourth conductive layer connected to the negative contact 620 of the second electrical contact 500 is provided in the printed circuit board 600 of the second electrical contact 500, and the third conductive layer is connected to the fourth conductive layer via the second electrical connection 702.

Illustratively, the first electrical connector 701 and the second electrical connector 702 may employ power cords that may accommodate connections at a variety of angles. For example, when the first and second connection parts 220 and 320 are vertically disposed, the power line may be bent without affecting the electrical connection of the positive contact 610 of the first electrical contact part 400 with the positive contact 610 of the second electrical contact part 500 and the electrical connection of the negative contact 620 of the first electrical contact part 400 with the negative contact 620 of the second electrical contact part 500.

In an alternative embodiment, as shown in fig. 5 and 6, at least one of the positive contact 610 and the negative contact 620 is a resilient contact, which is a metal spring or a resilient thimble.

It will be appreciated that the conductive contact between the connector and the track is typically a hard contact, which is prone to poor contact. When the heights of the two tracks are inconsistent, the connecting piece is difficult to ensure sufficient conduction between the tracks. The positive contact 610 and the negative contact 620 are key structures for realizing conduction between tracks, and the positive contact 610 and the negative contact 620 are elastic contacts, so that the positive contact 610 and the negative contact 620 can be always in contact with corresponding conductive parts of the tracks when the electric connection device is mounted on the tracks.

Illustratively, the positive electrode contact 610 and the negative electrode contact 620 both adopt elastic ejector pin structures, and the ejector pins can stretch under the action of springs, so that under the condition that the heights of the two tracks are inconsistent, the circuit conduction between the two tracks can be realized.

In an alternative embodiment, as shown in fig. 1 and 7, each of the first mounting surface 210 and the second mounting surface 310 is provided with a mounting location 800 that mates with the printed circuit board 600.

Specifically, the printed circuit board 600 located on the first mounting surface 210 is fixed by the corresponding mounting position 800, that is, the printed circuit board 600 located on the first mounting surface 210 cannot move relative to the first mounting surface 210; the printed circuit board 600 located on the second mounting surface 310 is fixed by the corresponding mounting position 800, that is, the printed circuit board 600 located on the second mounting surface 310 cannot move relative to the second mounting surface 310.

In an alternative embodiment, as shown in fig. 1, 7 and 8, each mounting location 800 includes a clip assembly 810, the clip assembly 810 includes at least one first clip 811, each first clip 811 includes a stop portion 8111 and a clip portion 8112, the stop portion 8111 and the clip portion 8112 may be integrally formed, and the printed circuit board 600 is sandwiched between the clip portion 8112 and the corresponding mounting surface.

The following description will take the mounting position 800 on the first mounting surface 210 as an example, and the printed circuit board 600 located on the first mounting surface 210 cannot move relative to the first mounting surface 210 under the clamping of the first fastener 811.

It should be noted that, the printed circuit board 600 is fixed on the corresponding mounting surface by using the first buckle 811, which is simple in structure, convenient and quick.

In an alternative embodiment, as shown in fig. 2 and 7, the buckle assembly 810 includes a plurality of first buckles 811, and a plurality of stoppers 8111 enclose a mounting space 8113, where the mounting space 8113 is adapted to the printed circuit board 600.

For example, when the clip assembly 810 is provided with four first clips 811 in total, the four first clips 811 correspond to the four corners of the printed circuit board 600 one by one, the number of the corresponding stoppers 8111 is four, and the space formed by surrounding the four stoppers 8111 is rectangular, in other words, the space formed by surrounding the four stoppers 8111 is consistent with the shape of the printed circuit board 600, thereby improving the connection stability of the printed circuit board 600.

In order to facilitate the assembly of the printed circuit board 600 into the mounting space 8113, each engaging portion 8112 is provided with a guide surface 8112a and an abutment surface 8112b, and the printed circuit board 600 is guided between the abutment surface 8112b and the corresponding mounting surface via the guide surface 8112 a.

In an alternative embodiment, as shown in fig. 2 and 7, each mounting location 800 further includes a limiting portion 812, and the limiting portion 812 is formed with a limiting space 813 adapted to the printed circuit board 600.

Illustratively, two limiting portions 812 are disposed along the width direction of the printed circuit board 600, the two limiting portions 812 are disposed on opposite sides of the printed circuit board 600, respectively, the distance between the two limiting portions 812 is adapted to the width of the printed circuit board 600, that is, two first buckles 811 are located on one short side of the printed circuit board 600, two other first buckles 811 are located on the other short side of the printed circuit board 600, one limiting portion 812 is located on one long side of the printed circuit board 600, and the other limiting portion 812 is located on the other long side of the printed circuit board 600.

In an alternative embodiment, as shown in fig. 2, each mounting location 800 further includes a supporting portion 814, where the supporting portion 814 is disposed on the corresponding mounting surface, and the printed circuit board 600 is sandwiched between the buckling portion 8112 and the corresponding supporting portion 814, so that a gap is left between the printed circuit board 600 and the corresponding mounting surface.

The supporting portion 814 may be provided in a cylindrical shape or a rectangular parallelepiped shape to support the printed circuit board 600.

In the case where the first and second electrical connectors 701 and 702 are provided, as shown in fig. 6, the printed circuit board 600 further includes two pads 630, and the two pads 630 correspond to the two conductive layers of the printed circuit board 600, respectively. Wherein the pads 630 may be disposed on the lower surface of the printed circuit board 600. The lower surface of the printed circuit board 600 refers to a side of the printed circuit board 600 near the corresponding mounting surface. In other words, the clearance between the printed circuit board 600 and the corresponding mounting surface facilitates the wiring of the first and second electrical connectors 701 and 702 and the connection of the first and second electrical connectors 701 and 702 to the corresponding pads 630.

In an alternative embodiment, as shown in fig. 1 and 2, each of the first and second connection parts 220 and 320 includes a second snap 900 adapted to a snap groove of a rail for convenience of installation and removal.

In the following description, taking the first connection portion 220 as an example, the first connection portion 220 includes at least two second fasteners 900, where the two second fasteners 900 respectively correspond to two fastening slots of the rail, and the structure of the second fasteners 900 may be the same as that of the first fastener 811, and at this time, the orientation of the fastening portion 8112 of the second fasteners 900 is opposite to that of the fastening portion 8112 of the first fastener 811.

The first connection portion 220 includes four second hooks 900, each two second hooks 900 corresponds to one slot of the track, two first hooks 811 located at one short side of the printed circuit board 600 are located between two second hooks 900, two first hooks 811 located at the other short side of the printed circuit board 600 are located between two other second hooks 900, and the stop portions 8111 of the first hooks 811 located at the same side and the stop portions 8111 of the second hooks 900 are located on the same plane.

In addition, as shown in fig. 9 and 10, the embodiment of the present utility model further provides a two-wire track lamp assembly, including: at least two rails and the electrical connection device;

the first and second electrical contact portions 400 and 500 are electrically connected with the conductive portions of the corresponding tracks, respectively, and the first and second connection portions 220 and 320 are connected with the corresponding tracks, respectively.

The two-wire track lamp assembly comprises a first track 1101 and a second track 1102, each of the first track 1101 and the second track 1102 comprises a track body, a positive electrode conductive part and a negative electrode conductive part are arranged in the track body, the positive electrode conductive part and the negative electrode conductive part are arranged side by side, the positive electrode conductive part extends along the length direction of the track body, the negative electrode conductive part extends along the length direction of the track body, and two clamping grooves are formed in the track body.

Specifically, the second buckle 900 of the first connection portion 220 is engaged with the slot of the first track 1101, the second buckle 900 of the second connection portion 320 is engaged with the slot of the second track 1102, and the first track 1101 and the second track 1102 are mechanically connected.

At this time, the positive electrode contact 610 of the first electrical contact 400 is electrically connected to the positive electrode conductive portion of the first track 1101, the negative electrode contact 620 of the first electrical contact 400 is electrically connected to the negative electrode conductive portion of the first track 1101, the positive electrode contact 610 of the second electrical contact 500 is electrically connected to the positive electrode conductive portion of the second track 1102, the negative electrode contact 620 of the second electrical contact 500 is electrically connected to the negative electrode conductive portion of the second track 1102, and the first electrical connector 701 is connected to the positive electrode contact 610 of the first electrical contact 400 and the positive electrode contact 610 of the second electrical contact 500, respectively, and the second electrical connector 702 is connected to the negative electrode contact 620 of the first electrical contact 400 and the negative electrode contact 620 of the second electrical contact 500, respectively, so that the first track 1101 and the second track 1102 are electrically connected.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An electrical connection device for a two-wire track, comprising: a flexible connection part (100), a first mounting part (200), a second mounting part (300), a first electrical contact part (400) and a second electrical contact part (500);

the flexible connection part (100) is connected between the first installation part (200) and the second installation part (300), the first installation part (200) is provided with a first installation surface (210), the second installation part (300) is provided with a second installation surface (310), the first electric contact part (400) is arranged on the first installation surface (210), the second electric contact part (500) is arranged on the second installation surface (310), and the first electric contact part (400) and the second electric contact part (500) are electrically connected;

the first mounting surface (210) is further provided with a first connecting portion (220) for connecting with the rail, and the second mounting surface (310) is further provided with a second connecting portion (320) for connecting with the rail.

2. The electrical connection device according to claim 1, wherein each of the first electrical contact (400) and the second electrical contact (500) comprises a printed circuit board (600), a positive contact (610) and a negative contact (620), the positive contact (610) and the negative contact (620) being provided to the printed circuit board (600).

3. The electrical connection device according to claim 2, further comprising a first electrical connector (701) and a second electrical connector (702), the printed circuit board (600) of the first electrical contact (400) being connected with the printed circuit board (600) of the second electrical contact (500) by the first electrical connector (701) to effect an electrical connection of the positive contact (610) of the first electrical contact (400) with the positive contact (610) of the second electrical contact (500);

the printed circuit board (600) of the first electrical contact (400) is connected with the printed circuit board (600) of the second electrical contact (500) by means of the second electrical connection (702) to achieve an electrical connection of the negative contact (620) of the first electrical contact (400) with the negative contact (620) of the second electrical contact (500).

4. The electrical connection device according to claim 2, wherein at least one of the positive contact (610) and the negative contact (620) is a resilient contact, which is a metal spring or a resilient thimble.

5. The electrical connection device according to any of claims 2 to 4, wherein each of the first mounting surface (210) and the second mounting surface (310) is provided with a mounting location (800) for mating with the printed circuit board (600).

6. The electrical connection device of claim 5, wherein each mounting location (800) comprises a snap assembly (810), the snap assembly (810) comprising at least one first snap (811), each first snap (811) comprising a stop portion (8111) and a snap portion (8112), the printed circuit board (600) being sandwiched between the snap portion (8112) and a corresponding mounting surface.

7. The electrical connection device according to claim 6, wherein the snap assembly (810) comprises a plurality of the first snaps (811), a plurality of the stops enclosing a mounting space (8113), the mounting space (8113) being adapted to the printed circuit board (600);

wherein each buckling part (8112) is provided with a guide surface (8112 a) and an abutting surface (8112 b), and the printed circuit board (600) is led between the abutting surface (8112 b) and the corresponding mounting surface through the guide surface (8112 a).

8. The electrical connection device according to claim 6, wherein each mounting location (800) further comprises a limit portion (812), the limit portion (812) being formed with a limit space (813) adapted to the printed circuit board (600); and/or the number of the groups of groups,

and the support part (814) is arranged between the buckling part (8112) and the corresponding support part (814) in a clamping way, so that a gap is reserved between the printed circuit board (600) and the corresponding mounting surface.

9. The electrical connection device according to any one of claims 1 to 4, wherein each of the first connection portion (220) and the second connection portion (320) comprises a second catch (900) adapted to a catch groove of a track.

10. A two-wire track lamp assembly, comprising: at least two rails and an electrical connection device according to any one of claims 1 to 9;

the first electrical contact portion (400) and the second electrical contact portion (500) are respectively electrically connected with the conductive portions of the corresponding tracks, and the first connection portion (220) and the second connection portion (320) are respectively connected with the corresponding tracks.