Four-layer connector

Abstract

The utility model discloses a four-layer connector. The four-layer connector comprises a first-layer shell, a second-layer shell, a third-layer shell and a fourth-layer shell, a first wiring hole and a second wiring hole are formed in the first-layer shell, and a first tension spring, a second tension spring and a first conducting strip are arranged in the first-layer shell; a third wiring hole and a fourth wiring hole are formed in the second-layer shell; a third tension spring, a fourth tension spring and a second conducting strip are arranged in the second-layer shell; a fifth wiring hole and a sixth wiring hole are formed in the third-layer shell; a fifth tension spring, a sixth tension spring and a third conducting strip are arranged in the third-layer shell; the first connecting conductor is connected with the first conducting strip and the second conducting strip; and the second connecting conductor is connected with the second conducting strip and the third conducting strip. According to the utility model, the intercommunication function is realized through the four layers of shells respectively, and the first conducting strip, the second conducting strip and the third conducting strip are interconnected up and down through the first connecting conductor and the second connecting conductor, so that different wiring requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to an electrical appliance connector, in particular to a four-layer connector. Background Art

[0002] Electrical connectors are widely used for connecting power supply circuits. In the prior art, the electrical connector includes two wire holes for internal conductive connection, and two wires are respectively inserted into the two wire holes for connection.

[0003] However, during the use of current electrical connectors, the structural strength of the conductor is not enough, which easily causes its structural deformation, and the fixing method of the conductor is not stable enough, resulting in insufficient contact surface of the wire connected to it, affecting the conductive current carrying capacity of the product. In addition, the electrical connectors in the current prior art are usually single-layer one-input and two-output connectors, which require more assembly space, have low wiring efficiency, and have fewer wiring ports, and cannot meet the different wiring needs of users. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a four-layer connector, which overcomes the deficiencies of the prior art, realizes the intercommunication function through the first layer shell, the second layer shell, the third layer shell and the fourth layer shell respectively, and realizes the upper and lower interconnection function between the first conductive sheet, the second conductive sheet and the third conductive sheet through the first connecting conductor and the second connecting conductor, thereby realizing the functions of single-input and multiple-output and multiple-input and multiple-output, thereby realizing the interconnection between multi-position connectors and meeting the different wiring requirements of users.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A four-layer connector, comprising an insulating housing, wherein the insulating housing comprises a first-layer housing, a second-layer housing, a third-layer housing and a fourth-layer housing which are arranged in an integrated manner, wherein the first-layer housing, the second-layer housing, the third-layer housing and the fourth-layer housing are stacked in sequence from top to bottom;

[0007] A first wiring hole and a second wiring hole are provided on the top of the first shell, a first spring installation cavity and a second spring installation cavity are provided on the side of the first shell, a first spring and a second spring are installed in the first spring installation cavity and the second spring installation cavity respectively, the first wiring hole is connected to the first spring installation cavity, the second wiring hole is connected to the second spring installation cavity, a first conductive sheet is installed inside the first shell, and two ends of the first conductive sheet are connected to the first spring and the second spring respectively;

[0008] A third wiring hole and a fourth wiring hole are provided on the upper side of the second shell, a third spring installation cavity and a fourth spring installation cavity are provided on the side of the second shell, a third spring and a fourth spring are installed in the third spring installation cavity and the fourth spring installation cavity respectively, the third wiring hole is connected to the third spring installation cavity, the fourth wiring hole is connected to the fourth spring installation cavity, a second conductive sheet is installed inside the second shell, and two ends of the second conductive sheet are connected to the third spring and the fourth spring respectively;

[0009] A fifth wiring hole and a sixth wiring hole are provided on the top of the third shell, a fifth spring installation cavity and a sixth spring installation cavity are provided on the side of the third shell, a fifth spring and a sixth spring are installed in the fifth spring installation cavity and the sixth spring installation cavity respectively, the fifth wiring hole is connected to the fifth spring installation cavity, the sixth wiring hole is connected to the sixth spring installation cavity, a third conductive sheet is installed inside the third shell, and two ends of the third conductive sheet are connected to the fifth spring and the sixth spring respectively;

[0010] A first connecting conductor is detachably mounted on the side of the second shell body, and two ends of the first connecting conductor are respectively connected to the first conductive sheet and the second conductive sheet; a second connecting conductor is detachably mounted on the side of the third shell body, and two ends of the second connecting conductor are respectively connected to the second conductive sheet and the third conductive sheet.

[0011] Preferably, a seventh wiring hole is opened on the top of the fourth shell layer, a seventh spring installation cavity is opened on the side of the fourth shell layer, a seventh spring is installed in the seventh spring installation cavity, a grounding piece is installed inside the fourth shell layer, and one end of the grounding piece is connected to the seventh spring.

[0012] Preferably, a cover plate is installed on the outer side of the first spring clip installation cavity, the second spring clip installation cavity, the third spring clip installation cavity, the fourth spring clip installation cavity, the fifth spring clip installation cavity, the sixth spring clip installation cavity and the seventh spring clip installation cavity, and the cover plate is fixedly assembled with the insulating shell.

[0013] Preferably, test jacks are provided above the first shell layer, above the second shell layer and on the third shell layer, and the test jacks are respectively connected with the first spring clip installation cavity, the third spring clip installation cavity and the fifth spring clip installation cavity.

[0014] Preferably, a plug-in hole is provided above the first shell body, and a fixed marking bracket is fixedly plugged into the plug-in hole.

[0015] Preferably, a rotation groove is provided on the upper surface of the first shell body, and a rotating marking bracket is rotatably connected in the rotation groove.

[0016] Preferably, a first button mounting hole and a second button mounting hole are formed on the upper surface of the first shell, a first button and a second button are mounted in the first button mounting hole and the second button mounting hole respectively, the lower end of the first button contacts the first spring, and the lower end of the second button contacts the second spring;

[0017] A third button mounting hole and a fourth button mounting hole are provided on the upper surface of the second shell, a third button and a fourth button are respectively mounted in the third button mounting hole and the fourth button mounting hole, the lower end of the third button is in contact with the third spring, and the lower end of the fourth button is in contact with the fourth spring;

[0018] A fifth button mounting hole and a sixth button mounting hole are provided on the upper surface of the third shell, a fifth button and a sixth button are mounted in the fifth button mounting hole and the sixth button mounting hole respectively, the lower end of the fifth button contacts with the fifth spring, and the lower end of the sixth button contacts with the sixth spring;

[0019] A seventh button mounting hole is provided on the upper surface of the fourth shell body, a seventh button is mounted in the seventh button mounting hole, and a lower end of the seventh button is in contact with a seventh spring.

[0020] Preferably, the left and right side surfaces of the first shell, the second shell, the third shell and the fourth shell are all provided with marking strip slots.

[0021] The utility model provides a four-layer connector. It has the following beneficial effects: the first spring, the second spring, the third spring, the fourth spring, the fifth spring, and the sixth spring are squeezed by the end of the wire respectively, so that they are elastically deformed, so that an opening is opened between the first spring and the second spring and the first conductive sheet, between the third spring and the fourth spring and the second conductive sheet, and between the fifth spring and the sixth spring and the third conductive sheet. After the wire is inserted into the opening, the wire is pressed by the elastic restoring force of the first spring, the second spring, the third spring, the fourth spring, the fifth spring, and the sixth spring respectively, so that the first wiring hole and the second wiring hole, the third wiring hole and the fourth wiring hole, and the fifth wiring hole and the sixth wiring hole are mutually connected in pairs to achieve the function of communication. In addition, the first wiring hole, the second wiring hole, the third wiring hole, the fourth wiring hole, the fifth wiring hole, and the sixth wiring hole can all be connected to single-strand hard wires, multi-strand wires, and can also be crimped with ends, making it more versatile. In addition, by installing the first connecting conductor between the first conductive sheet and the second conductive sheet, and installing the second connecting conductor between the second conductive sheet and the third conductive sheet, the upper and lower interconnection functions are realized between the first conductive sheet, the second conductive sheet and the third conductive sheet, thereby realizing the functions of single-input and multiple-output and multiple-input and multiple-output, thereby realizing the interconnection between multi-position connectors and meeting the different wiring requirements of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0023] Figure 1 A schematic diagram of the structure of the utility model;

[0024] Figure 2 A schematic diagram of the structure of the utility model;

[0025] Figure 3 A schematic diagram of the structure of the insulating housing in the utility model;

[0026] Figure 4 A schematic diagram of the structure of the test jack in the fourth embodiment of the present utility model;

[0027] Figure 5 A schematic diagram of the installation structure of the fixed marking bracket in the fifth embodiment of the present utility model;

[0028] Figure 6 A schematic diagram of the installation structure of the rotary marking bracket in the fifth embodiment of the present utility model;

[0029] Description of the numbers in the figure:

[0030] 1. First shell; 2. Second shell; 3. Third shell; 4. Fourth shell; 5. First wiring hole; 6. Second wiring hole; 7. First spring installation cavity; 8. Second spring installation cavity; 9. First spring; 10. Second spring; 11. First conductive sheet; 12. Third wiring hole; 13. Fourth wiring hole; 14. Third spring installation cavity; 15. Fourth spring installation cavity; 16. Third spring; 17. Fourth spring; 18. Second conductive sheet; 19. Fifth wiring hole; 20. Sixth wiring hole; 21. Fifth spring installation cavity; 22. Sixth spring installation cavity; 23. Fifth spring; 24. Sixth spring; 25. Third conductive sheet; 26. First connecting conductor; 27 , the second connecting conductor; 28, the seventh wiring hole; 29, the seventh spring installation cavity; 30, the seventh spring; 31, the grounding piece; 32, the cover plate; 33, the test socket; 34, the plug hole; 35, the fixed marking bracket; 36, the rotating slot; 37, the first button installation hole; 38, the second button installation hole; 39, the first button; 40, the second button; 41, the third button installation hole; 42, the fourth button installation hole; 43, the third button; 44, the fourth button; 45, the fifth button installation hole; 46, the sixth button installation hole; 47, the fifth button; 48, the sixth button; 49, the seventh button installation hole; 50, the seventh button; 51, the marking strip slot; 52, the rotating marking bracket. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0032] Embodiment 1, as Figures 1 to 6 As shown, a four-layer connector includes an insulating housing, the insulating housing includes a first-layer housing 1, a second-layer housing 2, a third-layer housing 3 and a fourth-layer housing 4 which are arranged in an integrated manner, and the first-layer housing 1, the second-layer housing 2, the third-layer housing 3 and the fourth-layer housing 4 are stacked in sequence from top to bottom;

[0033] A first wiring hole 5 and a second wiring hole 6 are provided on the top of the first shell 1, a first spring installation cavity 7 and a second spring installation cavity 8 are provided on the side of the first shell 1, a first spring 9 and a second spring 10 are installed in the first spring installation cavity 7 and the second spring installation cavity 8 respectively, the first wiring hole 5 is connected to the first spring installation cavity 7, the second wiring hole 6 is connected to the second spring installation cavity 8, a first conductive sheet 11 is installed inside the first shell 1, and both ends of the first conductive sheet 11 are connected to the first spring 9 and the second spring 10 respectively;

[0034] A third wiring hole 12 and a fourth wiring hole 13 are provided on the upper side of the second shell 2, a third spring installation cavity 14 and a fourth spring installation cavity 15 are provided on the side of the second shell 2, a third spring 16 and a fourth spring 17 are installed in the third spring installation cavity 14 and the fourth spring installation cavity 15 respectively, the third wiring hole 12 is connected to the third spring installation cavity 14, the fourth wiring hole 13 is connected to the fourth spring installation cavity 15, a second conductive sheet 18 is installed inside the second shell 2, and two ends of the second conductive sheet 18 are connected to the third spring 16 and the fourth spring 17 respectively;

[0035] A fifth wiring hole 19 and a sixth wiring hole 20 are provided on the top of the third shell 3, a fifth spring installation cavity 21 and a sixth spring installation cavity 22 are provided on the side of the third shell 3, a fifth spring 23 and a sixth spring 24 are installed in the fifth spring installation cavity 21 and the sixth spring installation cavity 22 respectively, the fifth wiring hole 19 is connected to the fifth spring installation cavity 21, the sixth wiring hole 20 is connected to the sixth spring installation cavity 22, a third conductive sheet 25 is installed inside the third shell 3, and two ends of the third conductive sheet 25 are connected to the fifth spring 23 and the sixth spring 24 respectively;

[0036] A first connecting conductor 26 is detachably mounted on the side of the second shell 2, and the two ends of the first connecting conductor 26 are respectively connected to the first conductive sheet 11 and the second conductive sheet 18; a second connecting conductor 27 is detachably mounted on the side of the third shell 3, and the two ends of the second connecting conductor 27 are respectively connected to the second conductive sheet 18 and the third conductive sheet 25.

[0037] Working principle:

[0038] In the initial state, the right end of the first spring 9 abuts against the side wall of the first spring mounting cavity 7, and the left end abuts against the first conductive sheet 11; the left end of the second spring 10 abuts against the side wall of the second spring mounting cavity 8, and the right end abuts against the first conductive sheet 11; the right end of the third spring 16 abuts against the side wall of the third spring mounting cavity 14, and the left end abuts against one end of the second conductive sheet 18; the left end of the fourth spring 17 abuts against the side wall of the fourth spring mounting cavity 15, and the right end abuts against the other end of the second conductive sheet 18; the right end of the fifth spring 23 abuts against the side wall of the fifth spring mounting cavity 21, and the left end abuts against one end of the third conductive sheet 25; the left end of the sixth spring 24 abuts against the side wall of the sixth spring mounting cavity 22, and the right end abuts against the other end of the third conductive sheet 25.

[0039] During wiring, the wires are inserted into the first wiring hole 5, the second wiring hole 6, the third wiring hole 12, the fourth wiring hole 13, the fifth wiring hole 19 and the sixth wiring hole 20 respectively, and the ends of the wires squeeze the left end of the first tension spring 9, the right end of the second tension spring 10, the left end of the third tension spring 16, the right end of the fourth tension spring 17, the left end of the fifth tension spring 23 and the right end of the sixth tension spring 24 respectively, so that they are elastically deformed, so that the first tension spring 9 and the second tension spring 10 and the first conductive sheet 11, the third tension spring 16 and the fourth tension spring 17 and the second conductive sheet 18, the fifth tension spring 23 and the right end of the sixth tension spring 24 are elastically deformed. The spring 23 and the sixth spring 24 open an opening with the third conductive sheet 25. After the wire is inserted into the opening, the elastic restoring force of the first spring 9, the second spring 10, the third spring 16, the fourth spring 17, the fifth spring 23 and the sixth spring 24 respectively presses the wire against the left and right ends of the first conductive sheet 11, the left and right ends of the second conductive sheet 18 and the left and right ends of the third conductive sheet 25, so that the first wiring hole 5 and the second wiring hole 6, the third wiring hole 12 and the fourth wiring hole 13, the fifth wiring hole 19 and the sixth wiring hole 20 cooperate with each other to achieve the intercommunication function. In addition, the first wiring hole 5, the second wiring hole 6, the third wiring hole 12, the fourth wiring hole 13, the fifth wiring hole 19 and the sixth wiring hole 20 can all be connected with single-strand hard wires, multi-strand wires, and can also be crimped with terminals, making them more versatile.

[0040] In addition, by installing the first connecting conductor 26 between the first conductive sheet 11 and the second conductive sheet 18, and installing the second connecting conductor 27 between the second conductive sheet 18 and the third conductive sheet 25, the upper and lower interconnection functions are realized between the first conductive sheet 11, the second conductive sheet 18 and the third conductive sheet 25, so that the functions of single-input and multiple-output and multiple-input and multiple-output can be realized, thereby realizing the interconnection between multi-position connectors and meeting the different wiring requirements of users.

[0041] Embodiment 2, as a further preferred solution of embodiment 1, a seventh wiring hole 28 is provided on the top of the fourth housing 4, a seventh spring installation cavity 29 is provided on the side of the fourth housing 4, a seventh spring 30 is installed in the seventh spring installation cavity 29, a grounding piece 31 is installed inside the fourth housing 4, and one end of the grounding piece 31 is connected to the seventh spring 30. When in use, the wire is inserted into the seventh wiring hole 28 to squeeze the right end of the seventh spring 30 to produce elastic deformation, thereby opening an opening between the seventh spring 30 and the grounding piece 31. After the wire is inserted into the opening, the elastic restoring force of the seventh spring 30 presses the wire against the grounding piece 31, so that the wire can be interconnected with the incoming wire in the seventh wiring hole 28 through the grounding piece 31 to achieve the grounding protection function.

[0042] Embodiment three, as a further preferred solution of embodiment two, the outer sides of the first spring clip installation cavity 7, the second spring clip installation cavity 8, the third spring clip installation cavity 14, the fourth spring clip installation cavity 15, the fifth spring clip installation cavity 21, the sixth spring clip installation cavity 22 and the seventh spring clip installation cavity 29 are all installed with a cover plate 32, and the cover plate 32 is fixedly assembled with the insulating shell.

[0043] The cover plate 32 is respectively fixedly assembled with the first shell 1, the second shell 2, the third shell 3 and the fourth shell 4, so that the first conductive sheet 11, the second conductive sheet 18, the third conductive sheet 25 and the grounding member 31 can be fixed in position, so as to effectively prevent the first conductive sheet 11, the second conductive sheet 18, the third conductive sheet 25 and the grounding member 31 from loosening or falling off. In addition, the cover plate 32 can also ensure smoothness when the wire is inserted.

[0044] Embodiment 4, as Figure 4 As shown, as a further preferred solution of the first embodiment, a test jack 33 is provided on the top of the first shell 1, the top of the second shell 2 and the third shell 3, and the test jack 33 is respectively connected with the first spring clip installation cavity 7, the third spring clip installation cavity 14 and the fifth spring clip installation cavity 21. Through the test jack 33, the test plug can be quickly inserted into the corresponding first spring clip installation cavity 7, the third spring clip installation cavity 14 and the fifth spring clip installation cavity 21 for testing and maintenance.

[0045] Embodiment 5, as Figure 5-6As shown, as a further preferred solution of the first embodiment, a plug-in hole 34 is provided above the first shell 1, and a fixed marking bracket 35 is fixedly plugged into the plug-in hole 34. In addition, a rotating groove 36 is provided on the upper surface of the first shell 1, and a rotating marking bracket 52 is rotatably connected in the rotating groove 36. In this embodiment, a rotating block is provided at the lower end of the rotating marking bracket 52, so that the rotating marking bracket 52 can be rotated in the rotating groove 36 on the upper surface of the first shell 1 through the rotating block, so that the user can adjust the angle of the rotating marking bracket 52 according to the wiring requirements to solve the obstruction problem existing in the existing marking method; thus, the utility model can use both a fixed marking bracket for marking and a rotating marking bracket for marking to meet different marking requirements.

[0046] Embodiment 6, as a further preferred embodiment of embodiment 2, a first button mounting hole 37 and a second button mounting hole 38 are provided on the upper surface of the first layer housing 1, a first button 39 and a second button 40 are installed in the first button mounting hole 37 and the second button mounting hole 38 respectively, the lower end of the first button 39 contacts the first tension spring 9, and the lower end of the second button 40 contacts the second tension spring 10;

[0047] A third button mounting hole 41 and a fourth button mounting hole 42 are formed on the upper surface of the second shell 2. A third button 43 and a fourth button 44 are mounted in the third button mounting hole 41 and the fourth button mounting hole 42, respectively. The lower end of the third button 43 contacts the third spring 16, and the lower end of the fourth button 44 contacts the fourth spring 17.

[0048] A fifth button mounting hole 45 and a sixth button mounting hole 46 are provided on the upper surface of the third shell 3. A fifth button 47 and a sixth button 48 are installed in the fifth button mounting hole 45 and the sixth button mounting hole 46 respectively. The lower end of the fifth button 47 contacts the fifth tension spring 23, and the lower end of the sixth button 48 contacts the sixth tension spring 24.

[0049] A seventh button mounting hole 49 is formed on the upper surface of the fourth shell 4 . A seventh button 50 is mounted in the seventh button mounting hole 49 . The lower end of the seventh button 50 is in contact with the seventh tension spring 30 .

[0050] Therefore, when it is necessary to pull the wires out, the first button 39, the second button 40, the third button 43, the fourth button 44, the fifth button 47 and / or the sixth button 48 can be pressed to respectively squeeze the left end of the first spring 9, the right end of the second spring 10, the left end of the third spring 16, the right end of the fourth spring 17, the left end of the fifth spring 23, the right end of the sixth spring 24 and / or the right end of the seventh spring 30, so that the first spring 9, the second spring 10, the third spring 16, the fourth spring 17, the fifth spring 23, the sixth spring 24 and / or the seventh spring 30 are elastically deformed to release the wires, thereby achieving the effect of quickly pulling the wires out.

[0051] Embodiment 7, as a further preferred solution of embodiment 1, the left and right sides of the first shell 1, the second shell 2, the third shell 3 and the fourth shell 4 are all provided with a marking strip slot 51. The marking strip slot 51 can be used to quickly place a marking strip.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A four-layer connector, characterized in that: The insulating housing comprises a first shell (1), a second shell (2), a third shell (3) and a fourth shell (4) which are arranged in an integrated manner, wherein the first shell (1), the second shell (2), the third shell (3) and the fourth shell (4) are stacked in sequence from top to bottom; A first wiring hole (5) and a second wiring hole (6) are provided on the top of the first shell (1); a first spring installation cavity (7) and a second spring installation cavity (8) are provided on the side of the first shell (1); a first spring (9) and a second spring (10) are installed in the first spring installation cavity (7) and the second spring installation cavity (8), respectively; the first wiring hole (5) is connected to the first spring installation cavity (7); the second wiring hole (6) is connected to the second spring installation cavity (8); a first conductive sheet (11) is installed inside the first shell (1); two ends of the first conductive sheet (11) are connected to the first spring (9) and the second spring (10), respectively; A third wiring hole (12) and a fourth wiring hole (13) are provided on the upper side of the second shell (2); a third spring installation cavity (14) and a fourth spring installation cavity (15) are provided on the side of the second shell (2); a third spring (16) and a fourth spring (17) are installed in the third spring installation cavity (14) and the fourth spring installation cavity (15), respectively; the third wiring hole (12) is connected to the third spring installation cavity (14), and the fourth wiring hole (13) is connected to the fourth spring installation cavity (15); a second conductive sheet (18) is installed inside the second shell (2), and two ends of the second conductive sheet (18) are connected to the third spring (16) and the fourth spring (17), respectively; A fifth wiring hole (19) and a sixth wiring hole (20) are provided on the top of the third shell (3); a fifth spring installation cavity (21) and a sixth spring installation cavity (22) are provided on the side of the third shell (3); a fifth spring (23) and a sixth spring (24) are installed in the fifth spring installation cavity (21) and the sixth spring installation cavity (22), respectively; the fifth wiring hole (19) is connected to the fifth spring installation cavity (21); the sixth wiring hole (20) is connected to the sixth spring installation cavity (22); a third conductive sheet (25) is installed inside the third shell (3); two ends of the third conductive sheet (25) are connected to the fifth spring (23) and the sixth spring (24), respectively; A first connecting conductor (26) is detachably mounted on the side of the second shell (2), and two ends of the first connecting conductor (26) are respectively connected to the first conductive sheet (11) and the second conductive sheet (18); and a second connecting conductor (27) is detachably mounted on the side of the third shell (3), and two ends of the second connecting conductor (27) are respectively connected to the second conductive sheet (18) and the third conductive sheet (25).

2. A four-layer connector according to claim 1, characterized in that: A seventh wiring hole (28) is provided on the top of the fourth shell (4), a seventh spring installation cavity (29) is provided on the side of the fourth shell (4), a seventh spring (30) is installed in the seventh spring installation cavity (29), and a grounding member (31) is installed inside the fourth shell (4), one end of the grounding member (31) is connected to the seventh spring (30).

3. A four-layer connector according to claim 2, characterized in that: Cover plates (32) are installed on the outer sides of the first spring clip installation cavity (7), the second spring clip installation cavity (8), the third spring clip installation cavity (14), the fourth spring clip installation cavity (15), the fifth spring clip installation cavity (21), the sixth spring clip installation cavity (22) and the seventh spring clip installation cavity (29), and the cover plates (32) are fixedly assembled with the insulating housing.

4. A four-layer connector according to claim 1, characterized in that: A test jack (33) is provided above the first shell (1), above the second shell (2) and on the third shell (3); the test jack (33) is respectively connected to the first spring clip installation cavity (7), the third spring clip installation cavity (14) and the fifth spring clip installation cavity (21).

5. A four-layer connector according to claim 1, characterized in that: A plug-in hole (34) is provided above the first shell body (1), and a fixed marking bracket (35) is fixedly plugged into the plug-in hole (34).

6. A four-layer connector according to claim 1, characterized in that: The upper surface of the first shell (1) is provided with a rotation groove (36), and a rotation-type marking bracket (52) is rotatably connected in the rotation groove (36).

7. A four-layer connector according to claim 2, characterized in that: A first button mounting hole (37) and a second button mounting hole (38) are formed on the upper surface of the first shell (1), a first button (39) and a second button (40) are mounted in the first button mounting hole (37) and the second button mounting hole (38), respectively, the lower end of the first button (39) is in contact with the first spring (9), and the lower end of the second button (40) is in contact with the second spring (10); A third button mounting hole (41) and a fourth button mounting hole (42) are provided on the upper surface of the second shell (2), a third button (43) and a fourth button (44) are respectively mounted in the third button mounting hole (41) and the fourth button mounting hole (42), the lower end of the third button (43) is in contact with a third spring (16), and the lower end of the fourth button (44) is in contact with a fourth spring (17); The upper surface of the third shell (3) is provided with a fifth button mounting hole (45) and a sixth button mounting hole (46), a fifth button (47) and a sixth button (48) are mounted in the fifth button mounting hole (45) and the sixth button mounting hole (46), respectively, the lower end of the fifth button (47) is in contact with the fifth spring (23), and the lower end of the sixth button (48) is in contact with the sixth spring (24); A seventh key installation hole (49) is provided on the upper surface of the fourth shell (4), a seventh key (50) is installed in the seventh key installation hole (49), and the lower end of the seventh key (50) is in contact with the seventh spring (30).

8. A four-layer connector according to claim 1, characterized in that: The left and right side surfaces of the first shell (1), the second shell (2), the third shell (3) and the fourth shell (4) are all provided with marking strip slots (51).

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