TWI803908B - Cable test fixture - Google Patents

Abstract

A cable testing fixture is used for testing a cable having a first branch line and a second branch line. The cable test fixture includes a metal body, a first connector and a second connector. The metal body includes a first receiving groove and a second receiving groove. The first conne ctor is received in the first receiving groove. The first connector includes a first conductive hole into which the first branch line is partially inserted. The second connector is received in the second receiving groove. The second connector includes a second conductive hole into which the sec ond branch line is partially inserted. The cable test fixture further includes an isolation cover ass embly. The isolation cover assembly includes an isolation portion for separating the first branch line from the second branch line. This arrangement simplifies the structure of the cable test fixtu re, improves the convenience of cable test installation, and is easy to control.

Description

Cable test fixture

The invention relates to a cable testing fixture, which belongs to the technical field of cable testing equipment.

With the continuous development of connector technology, high-speed cable connectors are being widely used in related fields. High-speed cable connectors include cables, and how to test the cables to determine whether they meet the technical requirements is very important. The structure of the cable test fixture in the related art is relatively complicated, and it needs to be used with a circuit board, and its characteristics are not easy to control accurately, and the cost is high.

The object of the present invention is to provide a cable testing fixture with simple structure and easy control.

In order to achieve the aforementioned purpose, the present invention adopts the following technical solution: a cable testing fixture for testing a cable having a first branch line and a second branch line, the aforementioned cable testing fixture includes: a metal body, the aforementioned metal body It includes a first storage slot and a second storage slot; a first connector, the first connector is stored in the first storage slot, and the first connector is provided with a first conductive plug for the first branch line to be partially inserted. hole; and a second connector, the aforementioned second connector is accommodated in the aforementioned second receiving groove, the aforementioned second connector is provided with a second conductive jack for partially inserting the aforementioned second branch line; the aforementioned cable testing jig An isolation cover assembly is also included, and the isolation cover assembly includes an isolation portion for separating the first branch line from the second branch line.

As a further improved technical solution of the present invention, the isolation cover assembly includes a first isolation cover and a second isolation cover matched with the first isolation cover, and the first branch line and the second branch line are clamped on the first isolation cover. Between an isolation cover and the aforementioned second isolation cover.

As a further improved technical solution of the present invention, the aforementioned first isolation cover and/or the aforementioned second isolation cover include a first cable positioning slot for matching with the aforementioned first branch line and a first cable positioning groove for matching with the aforementioned second branch line. The matching second cable positioning groove, the isolation part is located between the aforementioned first cable positioning groove and the aforementioned second cable positioning groove.

As a further improved technical solution of the present invention, both the aforementioned first isolation cover and the aforementioned second isolation cover include the aforementioned first cable positioning groove and the aforementioned second cable positioning slot, and the aforementioned first cable positioning groove of the aforementioned first isolation cover The slot and the aforementioned first cable positioning groove of the aforementioned second isolation cover are used to jointly locate the aforementioned first branch line; the aforementioned second cable positioning slot of the aforementioned first isolation cover and the aforementioned second cable of the aforementioned second isolation cover The positioning groove is used for co-locating the second branch line; the isolation part includes a first cable positioning groove arranged between the first cable positioning groove of the first isolation cover and the second cable positioning groove of the first isolation cover. The isolation part and the second isolation part are arranged between the first cable positioning slot of the second isolation cover and the second cable positioning slot of the second isolation cover.

As a further improved technical solution of the present invention, the aforementioned first isolation part is integrally formed with the aforementioned first isolation cover, the aforementioned second isolation part is integrally formed with the aforementioned second isolation cover, the aforementioned first isolation part includes a first through hole, and the aforementioned second isolation The isolation portion includes a second through hole, and the aforementioned isolation cover assembly includes a fastener at least partially passing through the aforementioned first through hole and the aforementioned second through hole.

As a further improved technical solution of the present invention, the aforementioned isolation cover assembly includes an isolation block located between the aforementioned first isolation cover and the aforementioned second isolation cover, and the aforementioned isolation block includes the aforementioned isolation portion to cooperate with the aforementioned first branch line The first cable positioning groove and the second cable positioning groove for matching with the second branch line, the first cable positioning groove and the second cable positioning groove are respectively located on both sides of the isolation block.

As a further improved technical solution of the present invention, the aforementioned isolation block is made of metal material, and the aforementioned isolation block is set separately from the aforementioned first isolation cover and the aforementioned second isolation cover.

As a further improved technical solution of the present invention, the aforementioned first isolation cover includes a first through hole, the aforementioned second isolation cover includes a second through hole, the aforementioned isolation block includes a third through hole, and the aforementioned isolation cover assembly includes a , the fasteners of the aforementioned third through-hole and the aforementioned second through-hole.

As a further improved technical solution of the present invention, the aforementioned metal body includes a positioning hole, and the aforementioned spacer includes a positioning boss matched with the aforementioned positioning hole.

As a further improved technical solution of the present invention, the cable testing fixture further includes a back cover, the back cover is detachably connected to the metal body, and the back cover is provided with a storage space for at least partially accommodating the isolation cover assembly.

As a further improved technical solution of the present invention, the aforementioned first connector and the aforementioned second connector are both coaxial connectors and parallel to each other.

Compared with the prior art, the isolation cover assembly of the present invention includes an isolation portion for separating the aforementioned first branch line from the aforementioned second branch line, and the aforementioned first branch line of the aforementioned cable can be separated by setting the aforementioned isolation portion. The distance between the line and the aforementioned second branch line is reasonable, and on the basis of not affecting the signal transmission quality, it is convenient to connect the aforementioned first branch line and the aforementioned second branch line of the aforementioned cable to the aforementioned first connector and the aforementioned second branch line respectively. Connecting the connectors simplifies the structure of the aforementioned cable test fixture, improves the convenience of cable test installation, and is easy to control.

100: cable

11: The first cable

110: The first branch line

111: The first core

1111: The first bare wire

112: the first insulating layer

12: Second cable

120: Second branch line

121: the second core

1211: the second bare wire

122: Second insulating layer

13: The first ground wire

131: The first reflexion part

14: Second ground wire

141: second reflexion part

15: Insulation skin

2: metal body

200, 200', 200", 200''': cable test fixture

21: Body Department

211: external thread

22: Raised part

221: The first storage tank

222: The second storage tank

23: positioning hole

31: First connector

311: the first conductive jack

32: Second connector

321: the second conductive jack

4: Isolation cover assembly

40: Isolation Department

401: the first cable positioning slot

402: The second cable positioning slot

403: First Isolation Department

4031: First piercing

404:Second Isolation Department

4041: second perforation

41: The first isolation cover

42: Second isolation cover

43: Fasteners

44: Isolation block

441: The third piercing

45:Positioning boss

5:Back cover

51: internal thread

52: Containment Space

Fig. 1 is a schematic perspective view of a cable test fixture assembled with a cable to be tested in the first embodiment of the present invention.

Fig. 2 is a front view of Fig. 1 .

FIG. 3 is a partially exploded perspective view of FIG. 1 .

Fig. 4 is a partially exploded perspective view of Fig. 3 from another angle.

FIG. 5 is a further three-dimensional exploded view of FIG. 3 .

Fig. 6 is a three-dimensional exploded view of Fig. 5 from another angle.

FIG. 7 is a three-dimensional exploded view of the isolation cover assembly in FIG. 5 and the aforementioned cables to be tested.

Fig. 8 is a three-dimensional exploded view of Fig. 7 from another angle.

Fig. 9 is a bottom view of the first isolation cover in Fig. 7 .

Fig. 10 is a top view of the second isolation cover in Fig. 7 .

Fig. 11 is a schematic cross-sectional view along line A-A in Fig. 1 .

Fig. 12 is a schematic cross-sectional view along line B-B in Fig. 2 .

Fig. 13 is a schematic perspective view of the assembly of the cable testing fixture and the cable to be tested in the second embodiment of the present invention.

FIG. 14 is a perspective schematic view of the assembly of the cable testing fixture and the cable to be tested in the third embodiment of the present invention.

FIG. 15 is a partially exploded perspective view of FIG. 14 .

Fig. 16 is a partially exploded perspective view of Fig. 15 from another angle.

FIG. 17 is a partially exploded perspective view of the isolation cover assembly in FIG. 15 and the aforementioned cables to be tested.

Fig. 18 is a partially exploded perspective view of Fig. 17 from another angle.

FIG. 19 is a further perspective exploded view of FIG. 18 .

Fig. 20 is a schematic cross-sectional view along line C-C in Fig. 14 .

Fig. 21 is a schematic perspective view of the assembly of the cable testing fixture and the cable to be tested in the fourth embodiment of the present invention.

Exemplary embodiments of the present invention will be described in detail below with reference to the drawings. If there are multiple specific implementations, the features in these implementations can be combined with each other under the condition of no conflict. When the description refers to drawings, unless otherwise stated, the same numerals in different drawings indicate the same or similar elements. The content described in the following exemplary embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are only consistent with some aspects of the present invention described in the claims of the present invention Examples of devices, products and/or methods.

The terminology used in the present invention is only for the purpose of describing specific implementations, but not intended to limit the protection scope of the present invention. The singular forms "a", "aforementioned" or "the" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

It should be understood that the description of the present invention and the claims, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish features name. Similarly, words like "a" or "a" are not Denotes a limited number, while 系 means there is at least one. Unless otherwise indicated, words such as "front", "rear", "upper", "lower" and the like appearing in the present invention are for convenience of description only, and are not limited to a specific position or a spatial orientation. "Includes" or "comprising" and other similar words are an open-ended expression, which means that the elements appearing before "comprising" or "comprising" cover the elements appearing after "comprising" or "comprising" and their equivalents, This does not exclude that elements appearing before "comprises" or "comprises" also contain other elements. If "plural" appears in the present invention, it means two or more.

Referring to FIG. 1 to FIG. 12 , the illustrated first embodiment of the present invention discloses a cable testing fixture 200 for testing the cable 100 to be tested.

Please refer to FIG. 7 and FIG. 8. In the illustrated embodiment of the present invention, the aforementioned cable 100 is a high-speed cable, including a first cable 11, a second cable 12, and a cable located on the aforementioned first cable 11. The first grounding wire 13 on the side, the second grounding wire 14 on one side of the second cable 12, and the first grounding wire 11, the second cable 12, and the first grounding wire 13 wrapped in the circumferential direction And the insulating skin 15 on the aforementioned second ground wire 14 . In the illustrated embodiment of the present invention, the first cable 11 includes a first core 111 and a first insulating layer 112 wrapping the first core 111 in the circumferential direction; the second cable 12 includes a second core The body 121 and the second insulating layer 122 wrapping the second core 121 in the circumferential direction. The first cable 11 includes a first branch line 110 extending in the longitudinal direction and protruding from the insulating skin 15, and the second cable 12 includes a second branch line 120 extending in the longitudinal direction protruding from the insulating skin 15. . The first core 111 includes a first bare wire 1111 extending along the longitudinal direction protruding from the first insulating layer 112, and the second core 121 includes a wire extending along the longitudinal direction protruding from the second insulating layer 122. The second bare wire 1211. The first branch line 110 and the second branch line 120 are far away from each other to form a Y-shaped bifurcation. The first bare wire 1111 and the second bare wire 1211 are parallel to each other. The aforementioned first ground wire 13 and the aforementioned second ground wire 14 are respectively located on opposite sides of the aforementioned first insulating layer 112 and the aforementioned second insulating layer 122 . The first ground wire 13 includes a first reflex portion 131 that is bent and located outside the insulation 15 ; the second ground wire 14 includes a second reflex portion 141 that is bent and located outside the insulation 15 . The first folded portion 131 and the second folded portion 141 are respectively adjacent to two opposite sides of the insulating skin 15 .

Please refer to FIG. 1 to FIG. 12 , in the illustrated first embodiment of the present invention, the aforementioned cable test fixture 200 includes a metal body 2 , a first connector 31 , a second connector 32 , and an isolation cover assembly 4 and the back cover 5 .

Referring to FIG. 3 and FIG. 4 , the metal body 2 includes a body portion 21 and a protruding portion 22 extending integrally with the body portion 21 . The aforementioned protruding portion 22 includes a first receiving groove 221 and a second receiving groove 222 . The first receiving groove 221 and the second receiving groove 222 pass through the protruding portion 22 and the main body portion 21 along the longitudinal direction. In the illustrated embodiment of the present invention, the first receiving groove 221 and the second receiving groove 222 are cylindrical and parallel to each other.

Referring to FIGS. 1 to 6 , the first connector 31 and the second connector 32 are respectively received and fixed in the first receiving groove 221 and the second receiving groove 222 . In the illustrated embodiment of the present invention, the aforementioned first connector 31 and the aforementioned second connector 32 are both coaxial connectors (such as SMPM connectors, etc.), and are parallel to each other. The aforementioned first connector 31 is provided with a first conductive socket 311 (as shown in FIG. 6 ) for inserting the first bare wire 1111 of the aforementioned first branch line 110 ; The second bare wire 1211 of the wire 120 is inserted into the second conductive hole 321 (as shown in FIG. 6 ). With such arrangement, the aforementioned cable 100 can be electrically connected to the aforementioned cable testing fixture 200 , and then converted into a required standard connector, which is convenient for users to connect testing equipment to test the aforementioned cable 100 .

7 to 11, the aforementioned isolation cover assembly 4 includes a first isolation cover 41, a second isolation cover 42 that matches the aforementioned first isolation cover 41, and connects the aforementioned first isolation cover 41 and the aforementioned second isolation cover. The cover 42 is joined together by fasteners 43 . The first branch wire 110 and the second branch wire 120 are clamped between the first isolation cover 41 and the second isolation cover 42 . The isolation cover assembly 4 includes an isolation portion 40 for separating the first branch line 110 from the second branch line 120 . The first isolation cover 41 and/or the second isolation cover 42 include a first cable positioning groove 401 for matching with the first branch line 110 and a second cable positioning groove for matching with the second branch line 120 . The cable positioning slot 402 , the isolation portion 40 is located between the first cable positioning slot 401 and the second cable positioning slot 402 .

Specifically, as shown in FIG. 9 , in the illustrated embodiment of the present invention, the aforementioned first isolation cover 41 includes a first cable positioning groove 401 , a second cable positioning groove 402 and a The first isolation portion 403 between the aforementioned first cable positioning slot 401 and the aforementioned second cable positioning slot 402 . The combination of the first cable positioning groove 401 and the second cable positioning groove 402 on the first isolation cover 41 is generally Y-shaped, corresponding to the first branch line 110 and the second branch line 120 . The aforementioned first isolation portion 403 is provided with a first through hole 4031 penetrating up and down.

Similarly, as shown in FIG. 10, the aforementioned second isolation cover 42 also includes a first cable positioning groove 401, a second cable positioning groove 402, and Second isolation portion 404 between grooves 402 . The combination of the first cable positioning groove 401 and the second cable positioning groove 402 on the second isolation cover 42 is generally Y-shaped, corresponding to the first branch line 110 and the second branch line 120 . The aforementioned second isolation portion 404 is provided with a second through hole 4041 penetrating up and down.

Please refer to FIG. 7 to FIG. 11, the aforementioned first cable positioning groove 401 of the aforementioned first isolation cover 41 and the aforementioned first cable positioning slot 401 of the aforementioned second isolation cover 42 are used to jointly locate the aforementioned first branch line 110 : the aforementioned second cable positioning slot 402 of the aforementioned first isolation cover 41 and the aforementioned second cable positioning slot 402 of the aforementioned second isolation cover 42 are used for co-locating the aforementioned second branch line 120 . The aforementioned isolation portion 40 includes the aforementioned first isolation portion 403 and the aforementioned second isolation portion 404 .

Of course, those skilled in the art can understand that the first cable positioning groove 401 for positioning the first branch line 110 must also be provided only on the first isolation cover 41 or only on the second isolation cover 42; The second cable positioning slot 402 for positioning the second branch line 120 is also only provided on the first isolation cover 41 or only on the second isolation cover 42 . The aforementioned isolating portion 40 also has to be only one, and is disposed on the aforementioned first isolating cover 41 or the aforementioned second isolating cover 42 . The foregoing changes and combinations are understandable to those skilled in the art, and will not be repeated in the present invention.

In the illustrated embodiment of the present invention, the aforementioned fastener 43 is a bolt, at least partly passing through the aforementioned first through hole 4031 and the aforementioned second through hole 4041, so as to be screwed and fixed on the aforementioned first isolation cover 41 or the aforementioned second isolation cover 42 in the internally threaded hole. Of course, those skilled in the art can understand that the aforementioned fastener 43 can also be in other forms, such as bolts and nuts that cooperate with each other. The present invention will not repeat this.

In one embodiment of the present invention, the aforementioned first isolation cover 41 and the aforementioned second The isolation covers 42 are all made of insulating materials.

The aforementioned back cover 5 is detachably connected with the aforementioned metal body 2 (such as connecting by threads, please refer to FIG. 21), to improve the integral stability when testing the aforementioned cable 100. The back cover 5 is provided with a receiving space 52 for at least partially receiving the isolation cover assembly 4 .

When in use, the first branch line 110 and the second branch line 120 of the cable 100 are fixed to the isolation cover assembly 4, so that the first insulating layer 112 of the first branch line 110 is accommodated in the first isolation cover 41. In the first cable positioning groove 401 and the first cable positioning groove 401 of the second isolation cover 42, the second insulating layer 122 of the second branch line 120 is accommodated in the second line of the first isolation cover 41. The cable positioning groove 402 and the second cable positioning groove 402 of the aforementioned second isolation cover 42 . At this time, the first branch line 110 and the second branch line 120 of the cable 100 are sandwiched between the first isolation cover 41 and the second isolation cover 42 . Then, the aforementioned first isolation cover 41 and the aforementioned second isolation cover 42 are fixed by the aforementioned fasteners 43 . At this time, the first insulating layer 112 of the first branch line 110 and the second insulating layer 122 of the second branch line 120 are completely isolated from the outside. The first bare wire 1111 of the first branch wire 110 and the second bare wire 1211 of the second branch wire 120 protrude from the isolation cover assembly 4 along the longitudinal direction. Then, correspondingly insert the first bare wire 1111 and the second bare wire 1211 into the first conductive hole 311 of the first connector 31 and the second conductive hole 321 of the second connector 32 to realize electrical sexual connection. Finally, the back cover 5 sleeved on the cable 100 is connected and fixed to the metal body 2 to protect the electrical connection between the first bare wire 1111 and the first connector 31 from being affected by external force, It also protects the electrical connection between the second bare wire 1211 and the second connector 32 from being affected by external force.

Referring to FIG. 13 , the illustrated second embodiment of the present invention discloses a cable testing fixture 200 ′, which is used for testing the cable 100 to be tested. The difference between the aforementioned cable testing fixture 200 ′ and the aforementioned cable testing fixture 200 is that the aforementioned back cover 5 is not provided.

Please refer to Fig. 14 to Fig. 20, the third embodiment illustrated in the present invention discloses a cable test fixture 200", which is used to detect the cable 100 to be tested. The aforementioned cable test fixture 200" is the same as the aforementioned The difference between the cable test fixture 200 mainly lies in the isolation cover assembly 4 and the metal body 2, the same parts of the cable test fixture 200" and the cable test fixture 200 will not be repeated. Please refer to Fig. 15 and Fig. 16, the aforementioned metal body of the cable test fixture 200" 2 includes a positioning hole 23, and the aforementioned isolation cover assembly 4 of the aforementioned cable test fixture 200" includes a positioning boss 45 that matches the aforementioned positioning hole 23. The shapes of the aforementioned positioning hole 23 and the aforementioned positioning boss 45 are set flexibly. The isolation cover assembly 4 of the aforementioned cable test fixture 200" includes a first isolation cover 41, a second isolation cover 42 matched with the aforementioned first isolation cover 41, and a second isolation cover 42 located between the aforementioned first isolation cover 41 and the aforementioned second isolation cover 42. The isolation block 44 between them, and the fastener 43 that combines the aforementioned first isolation cover 41 and the aforementioned second isolation cover 42 together. The isolation block 44 includes the isolation portion 40 , the first cable positioning slot 401 for matching with the first branch line 110 and the second cable positioning slot 402 for matching with the second branch line 120 , The aforementioned first cable positioning slot 401 and the aforementioned second cable positioning slot 402 are respectively located on two sides of the aforementioned isolation block 44 . The positioning protrusion 45 is disposed on the isolation block 44 and located between the first bare wire 1111 and the second bare wire 1211 . The aforementioned first isolation cover 41 includes a first through hole 4031 , the aforementioned second isolation cover 42 includes a second through hole 4041 , and the aforementioned isolation block 44 includes a third through hole 441 . The aforementioned fastener 43 at least partially passes through the aforementioned first through hole 4031 , the aforementioned third through hole 441 and the aforementioned second through hole 4041 to be screwed and fixed in the inner threaded hole of the aforementioned first isolation cover 41 or the aforementioned second isolation cover 42 .

Preferably, the isolation block 44 is made of a metal material, so as to improve the anti-interference ability of the first branch line 110 and the second branch line 120 , thereby improving signal transmission quality. In the illustrated embodiment of the present invention, the isolation block 44 is provided separately from the first isolation cover 41 and the second isolation cover 42 , that is, the isolation block 44 is an independently processed part. The isolation block 44 is fixedly connected to the first isolation cover 41 and the second isolation cover 42 by means of assembly.

Please refer to FIG. 21 , the illustrated fourth embodiment of the present invention discloses a cable testing jig 200 ″, which is used for testing the cable 100 to be tested. The only difference between the aforementioned cable testing fixture 200 ″ and the aforementioned cable testing fixture 200 ″ is that the aforementioned back cover 5 is not provided.

Compared with the prior art, the isolation cover assembly 4 of the present invention includes an isolation part 40 for separating the aforementioned first branch line 110 from the aforementioned second branch line 120, and the aforementioned cable can be separated by setting the aforementioned isolation part 40. The aforementioned first branch line 110 of 100 and the aforementioned second branch line 120 are separated by a reasonable distance, on the basis of not affecting the signal transmission quality, it is convenient to connect the aforementioned cable 100 The aforementioned first branch line 110 and the aforementioned second branch line 120 are respectively connected to the aforementioned first connector 31 and the aforementioned second connector 32, which simplifies the aforementioned cable test fixtures 200, 200', 200", 200''' The structure improves the convenience of cable test installation and is easy to control.

The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art, although this specification has described the present invention in detail with reference to the foregoing embodiments. Note, however, those of ordinary skill in the art should understand that those skilled in the art still have to make modifications or equivalent replacements to the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by Within the patent scope of the present invention.

100: cable

11: The first cable

110: The first branch line

111: The first core

1111: The first bare wire

112: the first insulating layer

12: Second cable

120: Second branch line

121: the second core

1211: the second bare wire

122: Second insulating layer

14: Second ground wire

141: second reflexion part

15: insulation skin

40: Isolation Department

401: the first cable positioning slot

402: The second cable positioning slot

41: The first isolation cover

42: Second isolation cover

43: Fasteners

Claims (11)

A cable testing fixture, used for testing a cable with a first branch line and a second branch line, the cable testing fixture includes: a metal body, the metal body includes a first receiving groove and a second receiving groove; A connector, the aforementioned first connector is accommodated in the aforementioned first receiving groove, the aforementioned first connector is provided with a first conductive jack for allowing the aforementioned first branch line to be partially inserted; and a second connector, the aforementioned second connection The device is accommodated in the aforementioned second receiving groove, and the aforementioned second connector is provided with a second conductive jack through which the aforementioned second branch line is partially inserted; wherein: the aforementioned cable test fixture also includes an isolation cover assembly, and the aforementioned isolation cover assembly An isolation part for separating the first branch line from the second branch line is included. The cable test fixture according to claim 1, wherein: the isolation cover assembly includes a first isolation cover and a second isolation cover matched with the first isolation cover, the first branch line and the second branch line clamped between the aforementioned first isolation cover and the aforementioned second isolation cover. The cable test fixture according to claim 2, wherein: the first isolation cover and/or the second isolation cover include a first cable positioning slot for matching with the first branch line and a first cable positioning slot for matching with the first branch line The second cable positioning groove matched with the second branch line, the isolation part is located between the first cable positioning groove and the second cable positioning groove. The cable test fixture as claimed in item 3, wherein: the aforementioned first isolation cover and the aforementioned second isolation cover both include the aforementioned first cable positioning groove and the aforementioned second cable positioning groove, and the aforementioned first isolation cover The aforementioned first cable positioning slot and the aforementioned first cable positioning slot of the aforementioned second isolation cover are used to jointly locate the aforementioned first branch line; the aforementioned second cable positioning slot of the aforementioned first isolation cover and the aforementioned second isolation cover The aforementioned second cable positioning slot is used to jointly locate the aforementioned second branch line; the aforementioned isolation part includes the aforementioned first cable positioning slot provided on the aforementioned first isolation cover and the aforementioned second cable positioning slot of the aforementioned first isolation cover The first isolation part between the slots and the second isolation part provided between the first cable positioning slot of the second isolation cover and the second cable positioning slot of the second isolation cover. The cable test fixture according to claim 4, wherein: the first isolation part is integrally formed with the first isolation cover, the second isolation part is integrally formed with the second isolation cover, and the first isolation part includes a first A through hole, the second isolation portion includes a second through hole, and the isolation cover assembly includes a fastener at least partially passing through the first through hole and the second through hole. The cable test fixture as claimed in claim 2, wherein: the isolation cover assembly includes an isolation block located between the first isolation cover and the second isolation cover, and the isolation block includes the isolation part for connecting with the aforementioned The first cable positioning groove for matching with the first branch line and the second cable positioning groove for matching with the aforementioned second branch line, the aforementioned first cable positioning slot and the aforementioned second cable positioning slot are respectively located in the aforementioned Insulate the sides of the block. The cable testing fixture according to Claim 6, wherein: the isolation block is made of metal material, and the isolation block is set separately from the first isolation cover and the second isolation cover. The cable test fixture as claimed in item 7, wherein: the aforementioned first isolation cover includes a first through hole, the aforementioned second isolation cover includes a second through hole, the aforementioned isolation block includes a third through hole, and the aforementioned isolation cover assembly includes at least part of A fastener passing through the aforementioned first through-hole, the aforementioned third through-hole and the aforementioned second through-hole. The cable testing fixture as claimed in item 6, wherein: the aforementioned metal body includes a positioning hole, and the aforementioned isolation block includes a positioning boss that matches the aforementioned positioning hole. The cable test fixture as described in Claim 1, wherein: the cable test fixture further includes a back cover, the back cover is detachably connected to the metal body, and the back cover is provided with at least partly housing the isolation cover assembly of containment space. The cable testing fixture according to claim 1, wherein: the first connector and the second connector are both coaxial connectors and parallel to each other.

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