Lamp tube connector convenient to maintain

Abstract

The utility model belongs to the technical field of lamp tube connection, and particularly relates to a lamp tube connector convenient to maintain, which comprises a connector body, and the connector body comprises a bottom cover and a top cover connected with the bottom cover in a covering manner. The top cover comprises a top cover base body, an end cover piece and an end cover connecting structure, a top cover groove is concavely formed in the upper end face of the top cover base body, the end cover connecting structure is used for detachably installing the end cover piece in the top cover groove, during assembling, the lamp tubes are pressed and fixed to the bottom cover through the top cover, and when a certain lamp tube needs to be maintained and replaced, only the end cover piece needs to be detached through the end cover connecting structure, so that the lamp tube can be maintained and replaced. When the lamp tube to be replaced is replaced, the lamp tube to be replaced can extend into the top cover groove to independently warp the clamping portion between the lamp tube to be replaced and the top cover, the lamp tube to be replaced is separated from the bottom cover, meanwhile, the top cover base body is matched with the bottom cover to fix other lamp tubes, and maintenance and replacement are very convenient.

Description

[Technical Field]

[0001] This utility model belongs to the field of lamp tube connection technology, and in particular relates to a lamp tube connector that is easy to maintain. [Background Technology]

[0002] When performing car detailing, workstation lights are needed to illuminate the detailing environment and provide good visibility during the process. During installation, multiple light tubes are usually joined together using connectors to form different shapes.

[0003] Existing lamp connectors generally include a bottom cover, a top cover that fits with the bottom cover, and a conductive component located between the bottom cover and the top cover. During assembly, each lamp is first inserted into the conductive component of the bottom cover, and then the top cover is installed on the bottom cover. The top cover presses each lamp onto the bottom cover to prevent the lamp from detaching from the bottom cover in the vertical direction. During use, when a single lamp malfunctions and needs to be repaired or replaced, the entire top cover must be removed. After the entire top cover is removed, all lamps will detach from the bottom cover without the fixation of the top cover, making repair and replacement very inconvenient. [Utility Model Content]

[0004] The purpose of this invention is to provide a lamp connector that facilitates the maintenance and replacement of lamp tubes.

[0005] This utility model is achieved by the following technical solution:

[0006] A lamp tube connector that is easy to maintain includes a connector body, the connector body including a bottom cover and a top cover that fits and connects with the bottom cover, the top cover including:

[0007] The top cover base has a top cover groove on its upper end face, and the top cover base is used to cooperate with the bottom cover to fix the lamp tube;

[0008] End cap component, which can be detachably installed in the top cover groove;

[0009] An end cap connection structure is located between the top cover base and the end cap component, and is used for the detachable installation of the end cap component.

[0010] As described above, for a lamp tube connector that is easy to maintain, the end cap connection structure includes:

[0011] Insertion protrusions, a plurality of said insertion protrusions are provided at one end of the end cap member near the top cover groove;

[0012] An insertion groove is provided on the top cover groove and corresponds to the insertion protrusion. When the end cover is installed in the top cover groove, the insertion protrusion and the corresponding insertion groove cooperate to lock and fix it, so as to prevent the end cover from leaving the top cover groove.

[0013] As described above, a lamp tube connector that is easy to maintain has a top cover limiting protrusion on the side wall of the top cover groove. When the end cover is installed in the top cover groove, the end cover abuts against the top cover limiting protrusion, and a disassembly notch is formed between the end cover and the top cover base.

[0014] As described above, in a lamp tube connector that is easy to maintain, the insertion protrusion is a cylindrical protrusion and the insertion groove is an arc-shaped groove provided on the groove wall of the top cover groove. When the end cover is installed in the top cover groove, the outer wall of the cylindrical protrusion is tightly fitted with the groove wall of the arc-shaped groove.

[0015] As described above, a lamp tube connector that is easy to maintain also includes a lamp tube. The bottom cover has a bottom cover cavity on the side near the top cover for installing the lamp tube and communicating with the top cover groove. The top cover base has a first lamp tube fixing protrusion on the side near the bottom cover, and the end of the lamp tube has a second lamp tube fixing protrusion. When the lamp tube is installed between the bottom cover and the top cover, the first lamp tube fixing protrusion extends into the bottom cover cavity and abuts against the second lamp tube fixing protrusion vertically to prevent the lamp tube from detaching from the bottom cover in the vertical direction.

[0016] As described above, a lamp tube connector that is easy to maintain has a bottom cover with bottom cover limiting side plates located opposite each other on both sides of the bottom cover. The bottom cover cavity is formed between the bottom cover and the bottom cover limiting side plates. The upper end of the bottom cover limiting side plates is provided with a side plate slope.

[0017] As described above, a lamp tube connector that is easy to maintain has a lamp tube installation limiting groove on one side of the bottom cover limiting side plate, and lamp tube installation limiting protrusions on both sides of the lamp tube near the second lamp tube fixing protrusion that correspond to and match the lamp tube installation limiting groove.

[0018] As described above, a lamp tube connector that is easy to maintain has a top cover connecting post at one end of the top cover base near the bottom cover. The connector body also includes a cover connecting structure for connecting the bottom cover and the top cover. The cover connecting structure includes a top cover connecting hole that passes through the top cover connecting post axially and communicates with the top cover groove, and a bottom cover connecting hole on the bottom cover that corresponds to the top cover connecting hole.

[0019] As described above, a lamp tube connector that is easy to maintain has a modular conductive component on the bottom cover. The modular conductive component has vertically arranged upper and lower plug-in parts at the ends. The modular conductive component includes, from top to bottom, an insulating sleeve, a first conductive sheet, a first fixing member for fixing the first conductive sheet to the insulating sleeve, a second conductive sheet, a second fixing member for fixing the second conductive sheet to the insulating sleeve, and a third conductive sheet located below the second fixing member.

[0020] As described above, a lamp tube connector that is easy to maintain has a connector body composed of several arms in the form of a straight line, cross, V, L, Y, T, K, or star shape.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This utility model provides a lamp connector that is easy to maintain, including a connector body, a bottom cover, and a top cover that fits and connects with the bottom cover. The top cover includes a top cover base with a top cover groove recessed on its upper surface, an end cover piece, and an end cover connecting structure for detachably installing the end cover piece in the top cover groove. During assembly, multiple lamps are pressed and secured to the bottom cover by the top cover. When a lamp needs to be repaired or replaced, the end cover piece can be removed by using the end cover connecting structure. The end cover piece can then be inserted into the top cover groove to pry open the locking part between the lamp to be replaced and the top cover, allowing the lamp to be replaced to detach from the bottom cover. At the same time, the top cover base remains in contact with the bottom cover to fix the other lamps, making repair and replacement very convenient.

[0023] Meanwhile, a top cover connecting post is provided at one end of the top cover base near the bottom cover. The cover connection structure includes a top cover connecting hole that passes through the top cover connecting post axially and is connected to the top cover groove, and a bottom cover connecting hole on the bottom cover that corresponds to the top cover connecting hole. During assembly, bolts are passed through the top cover groove, the top cover connecting hole and the bottom cover connecting hole in sequence to fix the top cover and the bottom cover. The assembly and disassembly are convenient. The end cap is installed in the top cover groove to cover the connecting hole and bolts, making the overall appearance more beautiful. [Attached Image Description]

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0025] Figure 1 This is a perspective view of the Y-shaped connector body in a specific embodiment of this utility model;

[0026] Figure 2 This is an exploded structural diagram of the Y-shaped connector body in a specific embodiment of the present invention;

[0027] Figure 3 This is an exploded structural diagram of the Y-shaped connector body and the lamp tube in a specific embodiment of this utility model;

[0028] Figure 4 This is an exploded structural diagram of the modular conductive component in a specific embodiment of this utility model;

[0029] Figure 5 This is an exploded structural diagram of the modular conductive component in a specific embodiment of this utility model;

[0030] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0031] Figure 7 This is a perspective view of the body of the one-line connector in a specific embodiment of the present utility model;

[0032] Figure 8 This is a perspective view of the cross-shaped connector body in a specific embodiment of the present utility model;

[0033] Figure 9 This is a perspective view of the V-shaped connector body in a specific embodiment of this utility model;

[0034] Figure 10 This is a perspective view of the L-shaped connector body in a specific embodiment of the present utility model;

[0035] Figure 11 This is a perspective view of the T-shaped connector body in a specific embodiment of this utility model;

[0036] Figure 12 This is a perspective view of the K-shaped connector body in a specific embodiment of this utility model;

[0037] Figure 13 This is a perspective view of the cross-shaped connector body in a specific embodiment of this utility model.

Detailed Implementation Methods

[0038] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] When ordinal numbers such as "first" and "second" are mentioned in the embodiments of this utility model, unless they actually express the meaning of order according to the context, they should be understood as being used only for differentiation.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Specific embodiments, such as Figure 1-13The lamp connector shown includes a connector body 1, which includes a bottom cover 11 and a top cover 12 that fits and connects to the bottom cover 11. The top cover 12 includes: a top cover base 61 with a top cover groove 611 on its upper surface, which is used to fix the lamp tube in conjunction with the bottom cover 11; an end cover 62, which is detachably installed in the top cover groove 611; and an end cover connecting structure 63, which is located between the top cover base 61 and the end cover 62, for detachably installing the end cover 62. During assembly, multiple lamp tubes are pressed and secured to the bottom cover by the top cover. When a lamp tube needs to be repaired or replaced, the end cover is removed by using the end cover connecting structure, and the locking part between the lamp tube to be replaced and the top cover can be pried open individually in the top cover groove, allowing the lamp tube to be replaced to detach from the bottom cover. At the same time, the top cover base remains in conjunction with the bottom cover to fix the other lamp tubes, making repair and replacement very convenient.

[0042] Specifically, the end cap connection structure 63 includes: an insertion protrusion 631, a plurality of insertion protrusions 631 being disposed at one end of the end cap 62 near the top cover groove 611; and an insertion groove 632, which is disposed on the top cover groove 611 and corresponds to the insertion protrusion 631. When the end cap 62 is installed in the top cover groove 611, the insertion protrusion 631 and the corresponding insertion groove 632 cooperate to lock and fix it, so as to prevent the end cap 62 from disengaging from the top cover groove 611.

[0043] More specifically, the insertion protrusion 631 is a cylindrical protrusion, and the insertion groove 632 is an arc-shaped groove provided on the groove wall of the top cover groove 611. When the end cap 62 is installed in the top cover groove 611, the outer wall of the cylindrical protrusion and the groove wall of the arc-shaped groove are tightly engaged and fitted together. Assembly and disassembly are convenient.

[0044] Additionally, a top cover limiting protrusion 64 is provided on the side wall of the top cover groove 611. When the end cover 62 is installed in the top cover groove 611, the end cover 62 abuts against the top cover limiting protrusion 64, and a disassembly notch 65 is formed between the end cover 62 and the top cover base 61. During assembly, the end cover 62 is directly installed into the top cover groove 611 and limited by the top cover limiting protrusion 64. During disassembly, the end cover 62 is pried open through the disassembly notch 65, making disassembly more convenient.

[0045] Furthermore, it also includes a lamp tube 47. The bottom cover 11 has a bottom cover cavity 111 on the side near the top cover 12 for installing the lamp tube 47 and communicating with the top cover groove 611. The top cover base 61 has a first lamp tube fixing protrusion 42 on the side near the bottom cover 11. The end of the lamp tube 47 has a second lamp tube fixing protrusion 48. When the lamp tube 47 is installed between the bottom cover 11 and the top cover 12, the first lamp tube fixing protrusion 42 extends into the bottom cover cavity 111 and abuts against the second lamp tube fixing protrusion 48 vertically to prevent the lamp tube 47 from detaching from the bottom cover 11 in the vertical direction. During assembly, each lamp tube is first installed in its corresponding bottom cover cavity. Then, the top cover is installed on the bottom cover through the cover connection structure, which connects and fixes each lamp tube. The assembly and disassembly are convenient. When the top cover is connected to the bottom cover, the first lamp tube fixing clip protrudes into the bottom cover cavity and abuts against the second lamp tube fixing clip protruding at the end of the lamp tube, thus pressing the lamp tube onto the bottom cover. This prevents the lamp tube from detaching from the bottom cover in the vertical direction. This design allows the area covered by the top cover on the lamp tube to be smaller, or even the top cover to be unnecessary, reducing the obstruction of the lamp tube light by the top cover and making the overall workstation light dark area small or even non-dark area, which is more aesthetically pleasing.

[0046] More specifically, the bottom cover 11 is provided with bottom cover limiting side plates 43 opposite to both sides of the bottom cover 11, forming a bottom cover cavity 111 between the bottom cover 11 and the bottom cover limiting side plates 43. The upper end of the bottom cover limiting side plates 43 is provided with a side plate slope 44. The side plate slope 44 creates a notch at the upper end of the bottom cover limiting side plates 43, which facilitates the installation and removal of the lamp tube, while reducing the coverage of the lamp tube by the bottom cover, making the overall workstation light dark area smaller and more aesthetically pleasing.

[0047] Furthermore, the bottom cover limiting side plate 43 has a lamp tube installation limiting groove 451 on one side opposite to it, and the lamp tube 47 has lamp tube installation limiting protrusions 452 on both sides of the end near the second lamp tube fixing protrusion 48, which correspond to and match the lamp tube installation limiting groove 451. The lamp tube installation limiting protrusions 452 correspond to and match the lamp tube installation limiting groove 451, making it easier to install the lamp tube 47.

[0048] Furthermore, the top cover base 61 is provided with a top cover connecting post 46 at one end near the bottom cover 11. The connector body 1 also includes a cover connecting structure 41 for connecting the bottom cover 11 and the top cover 12. The cover connecting structure 41 includes a top cover connecting hole 312 that passes through the top cover connecting post 46 axially and communicates with the top cover groove 611, and a bottom cover connecting hole 317 on the bottom cover 11 corresponding to the top cover connecting hole 312. During assembly, bolts are passed through the top cover groove, the top cover connecting hole, and the bottom cover connecting hole in sequence to fix the top cover and the bottom cover. Disassembly and assembly are convenient. The end cap is installed in the top cover groove to cover the connecting holes and bolts, making the overall appearance more aesthetically pleasing. The top cover 12 and the bottom cover 11 are fixedly connected by connecting bolts in conjunction with the top cover connecting hole 312 and the bottom cover connecting hole 317. The top cover 12 and the bottom cover 11 can be connected with a single connecting bolt to fix multiple lights, making assembly more convenient.

[0049] Furthermore, the bottom cover 11 is provided with a modular conductive component 2, and the modular conductive component 2 has vertically arranged upper and lower plug-in parts at the ends. The modular conductive component 2 includes an insulating sleeve 21, a first conductive sheet 22, a first fixing member 23 for fixing the first conductive sheet 22 to the insulating sleeve 21, a second conductive sheet 24, a second fixing member 25 for fixing the second conductive sheet 24 to the insulating sleeve 21, and a third conductive sheet 26 disposed below the second fixing member 25. When the lamp tube is inserted and connected to the modular conductive component 2 in a vertical direction, the first lamp tube fixing protrusion 42 is used to press the lamp tube onto the bottom cover 11 to prevent the lamp tube from detaching from the bottom cover 11. During installation, the conductive end of the first conductive piece is first vertically inserted into the sleeve of the insulating sleeve, and then fixed to the insulating sleeve by the first fixing member. Next, the conductive end of the second conductive piece is vertically inserted into the sleeve of the insulating sleeve, and then fixed to the insulating sleeve by the second fixing member. Finally, the conductive end of the third conductive piece 26 is vertically inserted into the sleeve of the insulating sleeve. This assembly of the insulating sleeve, the first conductive piece, the first fixing member, the second conductive piece, the second fixing member, and the third conductive piece forms a modular conductive assembly. Finally, this modular conductive assembly is installed between the bottom cover and the top cover to prevent loosening or misalignment of the conductive pieces during installation, making installation more convenient. Specifically, both the first and second fixing members are insulating components.

[0050] In addition, a first fixing groove 31 and a first fixing protrusion 32 corresponding to and matching the first fixing groove 31 are provided between the insulating sleeve 21 and the first fixing member 23. As an optional embodiment of this application, the first fixing groove 31 is provided on the insulating sleeve 21, and correspondingly, the first fixing protrusion 32 is provided on the first fixing member 23. Specifically, the first fixing protrusion 32 is externally splined, and the corresponding first fixing groove 31 is internally splined, resulting in a more stable fixation.

[0051] Furthermore, a second fixing groove 33 and a second fixing protrusion 34 corresponding to and matching the second fixing groove 33 are provided between the insulating sleeve 21 and the second fixing member 25. As an optional embodiment of this application, the second fixing groove 33 is provided on the insulating sleeve 21, and correspondingly, the second fixing protrusion 34 is provided on the second fixing member 25. Specifically, the second fixing protrusion 34 is externally splined, and the corresponding second fixing groove 33 is internally splined, resulting in a more stable fixation.

[0052] More specifically, the first fixing member 23 is provided with a first mounting post 35 on the side near the insulating sleeve 21, and a first fixing member limiting protrusion 36 is provided around the first mounting post 35. The first conductive sheet 22 is sleeved on the first mounting post 35. The first fixing member limiting protrusion 36 is used to limit the depth of the first fixing protrusion 32 inserted into the first fixing groove 31, making installation more convenient.

[0053] Furthermore, a second mounting post 37 is provided on the side of the first fixing member 23 away from the insulating sleeve 21, and the second conductive sheet 24 is sleeved on the second mounting post 37. The insulating sleeve 21 has a first conductive sheet fixing protrusion 38 corresponding to the first conductive sheet 22 and a second conductive sheet fixing protrusion 39 corresponding to the second conductive sheet 24 on the side near the first conductive sheet 22. When the first fixing protrusion 32 is inserted into the first fixing groove 31, the first conductive sheet fixing protrusion 38 abuts against the first conductive sheet 22, and the second conductive sheet fixing protrusion 39 abuts against the second conductive sheet 24. This makes the structure more compact and the connection and fixation more stable.

[0054] Furthermore, the second fixing member 25 is provided with a second fixing member limiting protrusion 310 on the side near the insulating sleeve 21. The second fixing member limiting protrusion 310 is used to limit the depth of the second fixing protrusion 34 inserted into the second fixing groove 33, making installation more convenient.

[0055] Specifically, the second fixing member 25 has a third conductive sheet limiting mounting groove 311 on the side away from the insulating sleeve 21. This makes it easier to install the third conductive sheet 26.

[0056] More specifically, the insulating sleeve 21 is provided with an insulating sleeve connecting hole 313 corresponding to the top cover connecting hole 312; the first fixing member 23 is provided with a first fixing member connecting hole 314 corresponding to the insulating sleeve connecting hole 313 and a nut mounting groove 315 communicating with the first fixing member connecting hole 314; and the second fixing member 25 is provided with a second fixing member connecting hole 316 corresponding to the first fixing member connecting hole 314. During installation, the nut is placed in the nut mounting groove 315, and then the modular conductive assembly 2 is placed between the bottom cover 11 and the top cover 12 and fixed with bolts.

[0057] Optionally, such as Figure 7-13 As shown, the connector body 1 is composed of several arms in the form of a straight line, cross, V, L, Y, T, K, or star.

[0058] The above description is one embodiment provided in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Furthermore, due to different industry naming conventions, it is not limited to the above names or English names. Any methods or structures similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A lamp connector facilitating maintenance, characterized in that The connector body (1) comprises a bottom cover (11) and a top cover (12) connected with the bottom cover (11), wherein the top cover (12) comprises: a top cover base (61) with a top cover groove (611) opened on the upper end face, the top cover base (61) being used for cooperating with the bottom cover (11) to fix the lamp tube; an end cover piece (62) detachably installed in the top cover groove (611); an end cover connecting structure (63) arranged between the top cover base (61) and the end cover piece (62) and used for detachably installing the end cover piece (62).

2. A lamp connector for facilitating maintenance according to claim 1, characterized in that The end cover connecting structure (63) comprises: a plurality of plug-in protrusions (631) arranged on one end of the end cover piece (62) close to the top cover groove (611); plug-in grooves (632) arranged on the top cover groove (611) and corresponding to the plug-in protrusions (631), when the end cover piece (62) is installed in the top cover groove (611), the plug-in protrusions (631) are clamped and fixed with the corresponding plug-in grooves (632) to limit the end cover piece (62) from being separated from the top cover groove (611).

3. The lamp connector of claim 1, wherein, The top cover groove (611) is provided with a top cover limiting protrusion (64) on the side wall, when the end cover piece (62) is installed in the top cover groove (611), the end cover piece (62) abuts against the top cover limiting protrusion (64), and a dismounting gap (65) is formed between the end cover piece (62) and the top cover base (61).

4. The lamp connector of claim 2, wherein: The plug-in protrusions (631) are cylindrical protrusions, and the plug-in grooves (632) are arc grooves arranged on the groove wall of the top cover groove (611), when the end cover piece (62) is installed in the top cover groove (611), the outer wall of the cylindrical protrusion is clamped and tightly fitted with the groove wall of the arc groove.

5. The lamp connector of claim 1, wherein, Further comprising a lamp tube (47), the bottom cover (11) is provided with a bottom cover cavity (111) for installing the lamp tube (47) and communicating with the top cover groove (611) on one side close to the top cover (12), the top cover base (61) is provided with a first lamp tube fixing clamping protrusion (42) on one side close to the bottom cover (11), and the lamp tube (47) is provided with a second lamp tube fixing clamping protrusion (48) on the end portion, when the lamp tube (47) is installed between the bottom cover (11) and the top cover (12), the first lamp tube fixing clamping protrusion (42) extends into the bottom cover cavity (111) and abuts against the second lamp tube fixing clamping protrusion (48) up and down to limit the lamp tube (47) from being separated from the bottom cover (11) in the vertical direction.

6. A lamp connector for facilitating maintenance according to claim 5, wherein The bottom cover (11) is provided with a bottom cover limiting side plate (43) arranged on both sides of the bottom cover (11), and the bottom cover cavity (111) is formed between the bottom cover (11) and the bottom cover limiting side plate (43), and the bottom cover limiting side plate (43) is provided with a side plate inclined surface (44) on the upper end.

7. A lamp connector for facilitating maintenance according to claim 6, wherein The bottom cover limiting side plate (43) is provided with a lamp tube installation limiting groove (451) on the opposite side, and the lamp tube (47) is provided with lamp tube installation limiting protrusions (452) corresponding to and matching the lamp tube installation limiting groove (451) on both sides of one end close to the second lamp tube fixing clamping protrusion (48).

8. The lamp connector of claim 1, wherein, The top cover base (61) is provided with a top cover connecting column (46) near one end of the bottom cover (11), the connector body (1) further comprises a cover connecting structure (41) for connecting the bottom cover (11) and the top cover (12), the cover connecting structure (41) comprises a top cover connecting hole (312) penetrating through the top cover connecting column (46) along the axial direction and communicating with the top cover groove (611), and the bottom cover (11) is provided with a bottom cover connecting hole (317) corresponding to the top cover connecting hole (312).

9. A lamp connector for facilitating maintenance according to claim 8, wherein The bottom cover (11) is provided with a modular conductive assembly (2), and the modular conductive assembly (2) is vertically provided with upper and lower plug-in connectors at the tail end, the modular conductive assembly (2) comprises, from top to bottom, an insulating sleeve (21), a first conductive sheet (22), a first fixing member (23) for fixing the first conductive sheet (22) on the insulating sleeve (21), a second conductive sheet (24), a second fixing member (25) for fixing the second conductive sheet (24) on the insulating sleeve (21), and a third conductive sheet (26) arranged below the second fixing member (25).

10. The lamp connector of claim 1, wherein, The connector body (1) is a one-letter type, a cross type, a V type, an L type, a Y type, a T type, a K type or a rice type formed by a plurality of branch arms.

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