CN217404428U - Test connector and test system - Google Patents

Abstract

The utility model discloses a test connector and test system, wherein the set casing among the test connector includes column main part, spacing ring, gomphosis portion and spacing portion, still includes two axial through set casing's mounting hole, and spacing portion includes a pair of crossing long diagonal and short diagonal, and its nodical central symmetry that is about long diagonal and short diagonal, and the mounting hole is located long diagonal's both ends. The cylindrical main body sleeve is arranged on the lower side of the shell, the first spring is located between the limiting ring and the shell, the movable shell sleeve is arranged on the lower side of the cylindrical main body, the second spring is located between the limiting ring and the movable shell, the center needle is fixed in the mounting hole, the upper end of the center needle is electrically connected with the inner conductor of the cable, and the center needle is in insulation connection with the fixed shell through the first insulation piece and the second insulation piece. Compared with the prior art, the test connector claimed by the application can test two high-frequency transmission channels simultaneously, prevents signal interference, and is simple and efficient in test process and high in test stability.

Description

Test connector and test system

Technical Field

The utility model relates to an electric connector technical field especially relates to a test connector and test system.

Background

Along with the rapid development of communication information technology, mobile communication equipment is more and more miniaturized, the integration of host internal hardware and signal channels is more and more high, and the requirement on the signal transmission speed of electronic products is more and more high. For the connector, the structure of the connector is required to satisfy the requirements of compact structure layout and product miniaturization of the current electronic product, and simultaneously, the connector has a high-frequency transmission channel, and signal terminals do not interfere with each other. For connectors which need to test two high-frequency transmission channels or a plurality of high-frequency transmission channels, in order to prevent signal interference, a single-channel test method is generally adopted, the connector test can be completed only by disassembling and assembling the test connector or moving a test station in the test process, the test process is complicated, the efficiency is low, and the production requirement cannot be met.

Therefore, a need exists for a test connector and a test system capable of simultaneously testing two high frequency transmission channels of the connector and effectively preventing signal interference.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a test connector, two high frequency transmission channels of test connector simultaneously prevent to take place signal interference, and the simple high efficiency of test process and test stability are high.

In order to realize the purpose, the utility model discloses the technical scheme who takes is:

a test connector comprising a housing, a first spring, a stationary housing, a second spring, a movable housing, a center pin, a first insulator, and a second insulator, wherein:

the fixing shell comprises a columnar main body, a limiting ring arranged on the columnar main body, an embedding part positioned on the lower side of the columnar main body and a limiting part positioned on the lower side of the embedding part, and further comprises two mounting holes axially penetrating through the columnar main body, the embedding part and the limiting part, wherein the limiting part comprises a pair of crossed long diagonal lines and short diagonal lines, the limiting part is in central symmetry with respect to the intersection point of the long diagonal lines and the short diagonal lines, and the mounting holes are positioned at two ends of the long diagonal lines;

the columnar main body is sleeved on the lower side of the shell, and the first spring is sleeved on the outer side of the shell and positioned between the upper side surface of the limiting ring and the shell;

the movable shell comprises a main body part and an inserting part, the main body part is sleeved on the lower side of the columnar main body, the second spring is sleeved on the outer side of the columnar main body and is positioned between the lower side surface of the limiting ring and the main body part, and under the action of external force, the movable shell exerts upward pressure on the second spring to enable the movable shell to move upwards relative to the fixed shell;

the central needle is fixed in the mounting hole, the upper end of the central needle is electrically connected with the inner conductor of the cable, the needle head of the central needle protrudes out of the lower surface of the limiting part, the inner conductor is in insulation connection with the fixed shell through the first insulation part, and the central needle is fixed through the second insulation part and is in insulation connection with the fixed shell.

Preferably, a groove structure is arranged on the lower surface of the limiting part.

Preferably, one side of the insertion part close to the main body part is provided with a fitting groove for accommodating the fitting part, one side of the insertion part far away from the main body part is provided with a limiting groove for accommodating the limiting part, and the bottom of the limiting groove is provided with a guiding surface.

Preferably, be equipped with first through-hole structure in the downside of column main part week, be equipped with on the main part with the second through-hole structure that first through-hole structure matches, second through-hole structure is greater than along axial length first through-hole structure along axial length, the test connector still includes the pin, the pin runs through first through-hole structure with second through-hole structure.

Preferably, the spring support further comprises a fixing flange, wherein the fixing flange is sleeved on the outer side of the shell and is located on the upper side of the first spring.

Preferably, fan-shaped arc structures are arranged at two ends of the long diagonal line.

Preferably, the upper side of the columnar main body is provided with a boss structure, and the boss structure is electrically contacted with the shielding layer of the cable.

A test system comprises any one of the test connectors, a cable, a coaxial connector and a connector to be tested, wherein: the test connector and the coaxial connector are electrically connected through the cable, and when the test system is in a test state, the central pin is electrically contacted with a signal terminal to be tested of the connector to be tested.

Preferably, a heat-shrinkable sleeve is arranged on the upper side of the shell and used for fixing the cable.

Preferably, when the test system is in a test state, the central pin is plugged with the signal terminal to be tested to realize electrical contact.

The beneficial effects of the utility model reside in that: by arranging the two center pins, two signal transmission channels can be tested at the same time, which is beneficial to improving the testing efficiency; the two mounting holes are arranged at the two ends of the long diagonal line of the limiting part, so that the signal blocking rate is increased, the interference between the central pins is effectively prevented, and meanwhile, the short circuit or mutual collision of the central pins due to contact can be effectively avoided when the deformation of the test connector is overlarge, thereby being beneficial to improving the test stability of the test connector; through the setting of first spring and second spring for the test connector possesses the effect of elasticity compression stroke and butt joint direction, helps improving test connector's test accuracy.

Drawings

Fig. 1 is a schematic structural diagram of a test connector according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle of the test connector in the embodiment of the present invention;

FIG. 3 is an exploded view of the test connector according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a test connector according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a fixing shell in an embodiment of the present invention;

fig. 6 is a schematic structural view of a movable housing according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a test system according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a test system (without a to-be-tested connector) according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a tested connector according to an embodiment of the present invention.

Reference numerals: 10. testing the connector; 11. a housing; 12. a first spring; 13. a stationary case; 131. a columnar body; 1311. a first via structure; 132. a limiting ring; 133. a fitting portion; 134. a limiting part; 1341. a groove structure; 1342. a circular arc structure; 135. mounting holes; 136. a boss structure; 14. a second spring; 15. a movable housing; 151. a main body portion; 1511. a second via structure; 152. an insertion part; 1521. a fitting groove; 1522. a limiting groove; 1523. a guide surface; 16. a central needle; 161. a needle head; 17. a first insulating member; 18. a second insulating member; 19. a pin; 20. a coaxial joint; 30. a connector to be tested; 31. a signal terminal to be tested; 40. a cable; 41. an inner conductor; 42. an insulating layer; 43. a shielding layer; 50. a fixed flange; 60. and (4) heat-shrinkable tubing.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

The embodiment of the application provides a test connector and a test system, and solves the technical problems that in the prior art, a single-channel test method is adopted for testing a connector with two high-frequency test channels, the test process is complicated, and the efficiency is low. In the present application, when the test system is in the test state, the direction of the test connector with respect to the connector to be tested is upper, or top, and the opposite direction is lower, or bottom, bottom.

As shown in fig. 1 to 6, the embodiment of the present application:

a test connector 10 includes a housing 11, a first spring 12, a fixed housing 13, a second spring 14, a movable housing 15, a center pin 16, a first insulator 17, and a second insulator 18. As shown in fig. 5, the fixing case 13 includes a columnar body 131, a stopper ring 132 provided on the columnar body 131, an engaging portion 133 located below the columnar body 131, and a stopper portion 134 located below the engaging portion 133. The fixing case 13 further includes two mounting holes 135 axially penetrating the columnar body 131, the fitting portion 133, and the stopper portion 134. The stopper portion 134 includes a pair of long diagonal lines and short diagonal lines that intersect, the stopper portion 134 is centrosymmetric about the intersection point of the long diagonal lines and the short diagonal lines, and the mounting holes 135 are located at both ends of the long diagonal lines. It should be noted that the long diagonal line and the short diagonal line refer to two diagonal lines of a cross section of the stopper portion 134 perpendicular to the axial direction of the fixed shell 13, wherein the length of the long diagonal line is greater than the length of the short diagonal line. The column-shaped main body 131 is sleeved on the lower side of the housing 11, and the first spring 12 is sleeved on the outer side of the housing 11 and located between the upper side surface of the limiting ring 132 and the housing 11.

As shown in fig. 6, the movable housing 15 includes a main body 151 and an insertion portion 152, the main body 151 is disposed on the lower side of the columnar main body 131, and the second spring 14 is disposed on the outer side of the columnar main body 131 and between the lower side of the limiting ring 132 and the main body 151. Under the action of the external force, the movable housing 15 exerts an upward pressure on the second spring 14 so that the movable housing 15 moves upward relative to the fixed housing 13.

The center pin 16 is fixed in the mounting hole 135, the cable 40 passes through the housing 11 and extends along the axial direction thereof, the upper end of the center pin 16 is electrically connected with the inner conductor 41 of the cable 40, the needle head 161 of the center pin 16 protrudes from the lower surface of the limiting portion 134, the inner conductor 41 is connected with the fixed shell 13 through the first insulating member 17 in an insulating manner, and the center pin 16 fixes the needle head 161 through the second insulating member 18 and is connected with the fixed shell 13 in an insulating manner. Generally, the upper end of the center pin 16 and the inner conductor 41 are fixed together by welding. The first insulating member 17 and the second insulating member 18 serve to protect and fix the center pin 16 while insulating the center pin 16 from the fixed case 13.

In order to solve the technical problems that in the prior art, a single-channel test method is adopted for testing a connector with two high-frequency test channels, the test process is complicated, and the efficiency is low, two signal transmission channels can be tested simultaneously by arranging two center pins, so that the test efficiency is improved; the two mounting holes are arranged at the two ends of the long diagonal line of the limiting part, so that the signal blocking rate is increased, the interference between the central pins is effectively prevented, and meanwhile, the short circuit or mutual collision of the central pins due to contact can be effectively avoided when the deformation of the test connector is overlarge, thereby being beneficial to improving the test stability of the test connector; through the setting of first spring and second spring for the test connector possesses the effect of elasticity compression stroke and butt joint direction, helps improving test connector's test accuracy.

Preferably, the lower surface of the limiting portion 13 is provided with a groove structure 1341, which can further improve the blocking rate of signals and avoid signal interference between the two center pins 16.

Preferably, a fitting groove 1521 for accommodating the fitting portion 133 is disposed on one side of the insertion portion 152 close to the main body portion 151, a limiting groove 1522 for accommodating the limiting portion 134 is disposed on one side far from the main body portion 151, and a guiding surface 1523 is disposed at the bottom of the limiting groove 1522. The guiding surface 1523 guides the test connector 10 to be initially mated with the connector 30 to be tested (shown later), and the second spring 14 assists the test connector 10 and the connector 30 to be guided to be matched with each other.

Preferably, a first through hole structure 1311 is circumferentially arranged on the lower side of the columnar body 131, a second through hole structure 1511 matched with the first through hole structure 1311 is arranged on the body part 151, and the length of the second through hole structure 1511 in the axial direction is greater than that of the first through hole structure 1311 in the axial direction. The test connector 10 further includes a pin 19, the pin 19 extending through the first and second via structures 1311, 1511. The fixed case 13 and the movable case 15 are connected together by the pin 19, and the second through-hole structure 1511 is longer than the first through-hole structure 1311 in the axial direction to ensure that the movable case 15 can move upward with respect to the fixed case 13.

Preferably, the test connector 10 further includes a fixing flange 50, and the fixing flange 50 is disposed on the outer side of the housing 11 and located on the upper side of the first spring 12. When the test connector 10 is in a use state, the fixing flange 50 is mounted on the test fixture, and the first spring 17 is in a compressed state. Under the action of external force, the second spring 13 is compressed, the movable shell 15 moves upwards relative to the fixed shell 13, when the movable shell 15 does not move upwards any more, the pressure is transmitted to the first spring 12, the first spring 12 is compressed by the increase of the pressure, and the outer shell 11 and the fixed shell 13 move upwards relative to the fixed flange 50 integrally, so that the compression stroke of the test connector 10 is controlled.

Preferably, fan-shaped circular arc structures 1342 are provided at both ends of the long diagonal. Set up circular arc structure 1342 when improving the length of long diagonal, be convenient for fix a position the position of mounting hole 135, and have limiting displacement, be convenient for test connector's assembly and equipment to and the butt joint is carried out fast with the connector 30 that awaits measuring in the test procedure.

Preferably, the upper side of the cylindrical body 131 is provided with a boss structure 136, and the boss structure 136 is electrically contacted with the shielding layer 43 of the cable 40. More specifically, the mounting hole 135 extends on the boss structure 136, and the cross section is semicircular, so that the cable 40 is not only convenient to mount, but also the shielding layer 43 is tightly attached to the boss structure 136 and electrically contacted with the fixing shell 13, so as to form good electromagnetic shielding, and prevent the test signal from leaking or generating interference.

A test system, as shown in fig. 7 to 9, includes any one of the test connectors 10, a cable 40, a coaxial connector 20, and a connector under test 30. The cable 40 includes an inner conductor 41, an insulating layer 42, and a shielding layer 43 sequentially arranged from inside to outside. The test connector 10 and the coaxial connector 20 are electrically connected through the inner conductor 41 of the cable 40, that is, one end of the inner conductor 41 is electrically connected to the center pin 16 of the test connector 10, and the other end is electrically connected to the signal terminal or the signal pin of the coaxial connector 20. When the test system is in a test state, the center pin 16 is electrically contacted with the signal terminal 31 of the connector 30 to be tested. That is, in the test state, the signal terminal 31 to be tested transmits the radio frequency signal to the inner conductor 41 of the cable 40 via the center pin 16, and further to the coaxial connector connected to the test equipment via the inner conductor 41, whereby the radio frequency performance of the connector 30 to be tested can be obtained.

Preferably, the housing 11 is provided with a heat shrink 60 on the upper side, and the heat shrink 60 is used for fixing and protecting the cable 40.

Preferably, when the test system is in a test state, the central pin 16 is plugged into the signal terminal 31 to be tested to achieve electrical contact, and meanwhile, if dirt exists on the surface of the signal terminal 31 to be tested, the central pin 16 can take away the dirt when being separated from the signal terminal 31 to be tested after the test is completed, so that the self-cleaning function is achieved.

As shown in fig. 7 and 8, in one embodiment, the specific assembly process of the test connector 10, the coaxial connector 20 and the cable 40 in the test system is as follows: the inner conductor 41 of one end of the cable 40 is first connected to the coaxial connector 20, and the inner conductor 41 of the other end is soldered to the center pin 16 through the first insulator 17. Then, after the housing 11 is passed through the fixing flange 50, the first spring 12 is installed at the lower end of the housing 11 opposite to the fixing flange 50. The top of the outer shell 11 is sleeved with a heat-shrinkable sleeve 60 in advance, the cable 40 and the center pin 16 are passed through the outer shell 11 with the fixed flange 50 and the first spring 12 assembled, then the end of the center pin 16 not welded with the inner conductor 41 is passed through the second insulating piece 18, inserted into the two mounting holes 135 of the fixed shell 13, and the fixed shell 13 and the outer shell 11 are assembled together and fixed to a desired position by a corresponding fixture. Then, the second spring 14 is sleeved on the lower end of the upper limit ring 132 of the fixed shell 13, the movable shell 15 is assembled with the fixed shell 13, the two pins are respectively fixed and installed through the second through hole structure 1511 and the first through hole structure 1311, and then the heat shrinkable tubing 60 which is sleeved in advance is heated and shrunk to obtain the finished product.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A test connector, comprising a housing, a first spring, a stationary housing, a second spring, a movable housing, a center pin, a first insulator and a second insulator, wherein:

the fixing shell comprises a columnar main body, a limiting ring arranged on the columnar main body, an embedding part positioned on the lower side of the columnar main body and a limiting part positioned on the lower side of the embedding part, and further comprises two mounting holes axially penetrating through the columnar main body, the embedding part and the limiting part, wherein the limiting part comprises a pair of crossed long diagonal lines and short diagonal lines, the limiting part is in central symmetry with respect to the intersection point of the long diagonal lines and the short diagonal lines, and the mounting holes are positioned at two ends of the long diagonal lines;

the columnar main body is sleeved on the lower side of the shell, and the first spring is sleeved on the outer side of the shell and positioned between the upper side surface of the limiting ring and the shell;

the movable shell comprises a main body part and an inserting part, the main body part is sleeved on the lower side of the columnar main body, the second spring is sleeved on the outer side of the columnar main body and is positioned between the lower side surface of the limiting ring and the main body part, and under the action of external force, the movable shell exerts upward pressure on the second spring to enable the movable shell to move upwards relative to the fixed shell;

the central needle is fixed in the mounting hole, the upper end of the central needle is electrically connected with the inner conductor of the cable, the needle head of the central needle protrudes out of the lower surface of the limiting part, the inner conductor is in insulation connection with the fixed shell through the first insulation part, and the central needle is fixed through the second insulation part and is in insulation connection with the fixed shell.

2. The test connector of claim 1, wherein: and the lower surface of the limiting part is provided with a groove structure.

3. The test connector of claim 1, wherein: one side of the inserting part, which is close to the main body part, is provided with an embedding groove for accommodating the embedding part, one side of the inserting part, which is far away from the main body part, is provided with a limiting groove for accommodating the limiting part, and the bottom of the limiting groove is provided with a guide surface.

4. The test connector of claim 1, wherein: the lower side of the columnar main body is circumferentially provided with a first through hole structure, the main body is provided with a second through hole structure matched with the first through hole structure, the second through hole structure is longer than the first through hole structure along the axial length, the test connector further comprises a pin, and the pin penetrates through the first through hole structure and the second through hole structure.

5. The test connector of claim 1, wherein: still include mounting flange, mounting flange cover is established the shell outside, and is located the first spring upside.

6. The test connector of claim 1, wherein: and fan-shaped arc structures are arranged at two ends of the long diagonal line.

7. The test connector of claim 1, wherein: the upper side of the columnar main body is provided with a boss structure, and the boss structure is in electrical contact with the shielding layer of the cable.

8. A test system comprising the test connector of any one of claims 1 to 7, and further comprising a cable, a coaxial connector, and a connector under test, wherein: the test connector and the coaxial connector are electrically connected through the cable, and when the test system is in a test state, the central needle is electrically contacted with a signal terminal to be tested of the connector to be tested.

9. The test system of claim 8, wherein: the upper side of the shell is provided with a heat-shrinkable sleeve, and the heat-shrinkable sleeve is used for fixing the cable.

10. The test system of claim 8, wherein: when the test system is in a test state, the central pin is plugged with the signal terminal to be tested so as to realize electrical contact.

Images