TWM624263U - Test fitting of coaxial connector - Google Patents

Abstract

A test connector of a coaxial connector, which is fixed on a machine and plugged with a female connector, or plugged in a hand-held way for testing, the test connector includes: an outer shell, an inner shell, a male head shell, a Elastic element, an insulating component and a center conductor. The inner casing, the male casing, the elastic element, the insulating component and the central conductor are assembled in the casing in sequence, and the male casing has an extension section passing through the outer casing, and the front end of the extension section has a male connector body. The main body of the male connector has at least one slot, the slot enables the main body of the male connector to form a plurality of elastic pieces, and the outer surfaces of the elastic pieces have a fixing portion and a bevel, and the bevel is used for testing the insertion. When pressed by the female connector, the elastic pieces are retracted, and the elastic pieces are inserted into the female connector.

Description

Test Heads for Coaxial Connectors

The present invention relates to a connector, especially a test connector for connecting coaxial cables for testing.

Coaxial cable is a kind of coaxial signal transmission line, the innermost is a conductive metal wire, there is a layer of insulator surrounded by plastic on the outside of the wire, and there is one or more layers of mesh or copper foil or aluminum foil on the outside of the insulator. Shielded and grounded conductors, and then the outermost layer of the conductors is covered with an insulating material for protection, or it can be a Semi-Rigid metal wire without an outermost insulating jacket.

In the past, the circuit module of the PCB circuit board will be tested after the production is completed to verify whether the circuit board function is normal? During the test, the coaxial cable will be fixed on the test connector of the test instrument and the test machine. The outer C ring on the connector is snapped into the fixing groove of the female connector, and at the same time, the needle body of the center conductor of the male connector is inserted into the female needle of the female connector, and the signal is transmitted to the female needle through the needle body. The signal is transmitted from the female needle to the test circuit board, or the test circuit board transmits the signal to the female needle, and then the reciprocating signal transmission from the female needle to the needle body is used to detect whether the function of the circuit module of the PCB circuit board is good or bad.

After the test is completed, the machine action pulls the male connector of the test connector away from the female connector. Since this MMCX type male connector and the female connector body are in contact and fixed in a ring-shaped C-ring design, (the international standard standard indicates a single The standard value of the insertion force of the male-female pair is ≦15N/3.4lbs, and the pull-out force is 6N~15N/1.4lbs~3.4lbs). The male connector of the original standard design test connector is not easy to be separated from the female connector. circuit board circuit module The more the number of MMCX female connectors, the greater the pull-out force, which is a multiple of 6N~15N/1.4lbs~3.4lbs and the number of female connectors. Therefore, it is necessary to adjust the force applied by the machine to pull out the test connector, so that the male connector can be separated from the female connector. However, this applied force can easily damage the male connector and the female connector, and even damage the circuit module of the PCB circuit board.

The main purpose of this creation is to solve the above-mentioned defects, avoid the existence of defects and obtain the best performance of electrical characteristics. In this creation, a slot design is provided on the male connector of the test connector, and the slot design enables the male connector of the test connector to have a slot design. A plurality of shrapnels are formed, and when the shrapnel is tested, the male connector of the test connector is easily inserted into or pulled out from the female connector of the test circuit board.

Another object of the present invention is that the main body of the male connector of the test connector has beveled or rounded corners, and the beveled or rounded corners make it easy for the male connector to be inserted into the female connector.

Another object of this creation is to have an inclined surface or arc surface on the main body of the male joint of the test joint, and the inclined surface or arc surface can have automatic alignment when the male joint is assembled with the female joint, and maintain the minimum gap and offset. Shift amount to maintain optimum coaxiality for best electrical performance.

In order to achieve the above purpose, the present invention provides a test connector of a coaxial connector, which is fixed on a machine and plugged into a female connector, or can be held by hand. The test connector includes: an outer shell and an inner shell , a male shell, an elastic element, an insulating component and a central conductor. The shell is provided with two symmetrical lugs, and the two lugs lock the test connector on the test machine. The inner shell system is arranged inside the outer shell. The male shell system is arranged inside the shell. The elastic element is disposed between the male housing and the outer surface of the inner housing between. The insulating component is disposed in the outer shell, the inner shell and the male shell. The central conductor is disposed inside the outer shell and passes through the insulating component, the inner shell and the male shell. Wherein, the male housing has an extension section passing through the outer casing, the front end of the extension section has a male joint main body, the male joint main body has at least one slot, the slot makes the male joint main body form a plurality of Elastic shrapnel has a fixing portion on the outer surface of the shrapnel. When the plug is tested, it is squeezed by the female connector to shrink the shrapnel, so that the shrapnel is inserted into the cavity of the female connector In the process, a certain degree of contact force and holding force are formed.

In an embodiment of the present invention, the casing includes a front casing and a rear casing, the inner and outer surfaces of the front casing are stepped, the front casing has a front opening at the front end and an outer joint at the end , the outer joint part is assembled with an inner joint part of the rear shell; the two lugs are arranged at the front end of the rear shell, and have a rear opening and an external thread part at the end of the rear shell.

In an embodiment of the present invention, the inner casing is disposed inside the front casing, and an outer surface of the inner casing has a first blocking portion and a second blocking portion, the first blocking portion and the second blocking portion The first blocking portion of the inner casing is provided with a protruding section.

In an embodiment of the present invention, the male casing is disposed inside the front casing and is located in front of the inner casing, and there is a distance between the end of the male casing and the protruding section of the inner casing ; The outer surface of the male housing has a projection, the projection is against the first blocking wall of the front housing, so that the extension section of the front end of the male housing is opened from the front opening of the front housing extends outside.

In an embodiment of the present invention, the elastic element is arranged between the protruding block of the male housing and the protruding section of the inner housing.

In an embodiment of the present invention, the insulating component includes a first insulating member and a second insulating member, one end of the first insulating member is disposed inside the inner casing, and the other end of the first insulating member extends through the protruding section. Inside the male casing, the second insulating member is disposed in the rear casing and the end of the inner casing, and each of the first insulating member and the second insulating member has a hole for the center conductor to pass through. through holes.

In an embodiment of the present invention, the front end of the center conductor has a center pin, the center pin is arranged through the through hole of the second insulating member and the through hole of the first insulating member, and extends to the male In the main body of the joint; in addition, the end of the central conductor has at least one notch, and the notch enables the end of the central conductor to form a plurality of elastic sheet bodies.

In an embodiment of the present invention, the central conductor system includes a sleeve, an elastic element and a center pin; the sleeve is disposed in the through hole of the second insulating member and the through hole of the first insulating member In the hole, the end of the sleeve has at least one slit, and the slit enables the end of the sleeve to form a plurality of elastic sheet bodies, the elastic element and the center needle are sequentially arranged inside the sleeve, and the end of the center needle A latching portion of the central needle is clamped in the sleeve, and a needle body of the central needle passes through the sleeve and the through hole of the first insulating member, and extends into the main body of the male connector.

In an embodiment of the present invention, the outer surface of the male connector body has an inclined surface or an arc surface, and the inclined surface or the arc surface maintains a minimum gap when the male connector body is assembled with the female connector.

In an embodiment of the present invention, the outer surfaces of the elastic pieces further include a beveled corner or a rounded corner.

10: Test Connector

1: Shell

11: Front housing

111: Front opening

112: External joint

113: The first barrier

114: Second barrier

115: The third barrier

12: Rear shell

121: Internal joint

122: lugs

123: rear opening

124: External thread part

2: Inner shell

21: First gear

22: Second gear

23: Protruding segment

3: Male housing

31: bump

32: Extension

33: Male connector body

331: Inclined surface

332: Slotted

333: Shrapnel

334: Fixed part

335: Bevel

4: Elastic element

5: Insulation components

51: The first insulating part

52: Second insulation

511, 521: Through hole

6: Center conductor

61: center pin

62: Slotting

63: Shrapnel body

71: Casing

611: Slotting

712: Shrapnel body

72: Elastic element

73: Center Pin

731: Latch Department

732: Needle

20: Test machine

30: Female connector

301: Opening

302: Positioning slot

303: Female needle

40: Test the circuit board

Figure 1 is a schematic side sectional view of the test connector according to the first embodiment of the present invention; Figure 2 is a three-dimensional schematic diagram of the external appearance of the male housing of the test connector according to the first embodiment of the present invention; The schematic diagram of the test connector of the first embodiment being installed on the test machine; FIG. 4 is a schematic diagram of the first embodiment of the test connector of FIG. 3 for testing; FIG. 5 is the test connector of the first embodiment of FIG. Schematic diagram 2 of the test action; FIG. 6 is a schematic diagram of the action 3 of the test connector of the first embodiment of FIG. 3 for testing; FIG. 7 is a schematic side cross-sectional view of the test connector of the second embodiment of the present invention.

The technical content and detailed description of the present creation are described as follows with the drawings: Please refer to Figures 1 and 2, which are the cross-sectional views of the test connector and the three-dimensional schematic diagram of the appearance of the male housing according to the first embodiment of the present creation. As shown in the figure: the coaxial connector test connector of the present invention, the test connector 10 includes: an outer shell 1, an inner shell 2, a male shell 3, an elastic element 4, an insulating component 5 and a center conductor 6. Wherein, when the test connector 10 is fixed on the test machine (not shown in the figure), and the test connector 10 is electrically fixed to the coaxial cable (not shown in the figure) for testing, the male housing 3 The PCB circuit board module can be tested by plugging it into the female connector of the test circuit board (not shown in the figure).

The casing 1 includes a front casing 11 and a rear casing 12 . The inner and outer surfaces of the front case 11 are stepped. The front case 11 has a front opening 111 at the front end and a threaded outer joint 112 on the outer surface of the end. The outer joint 112 is connected to the rear case 12 . The inner joint portion 121 whose inner wall is in the shape of a thread is assembled. The front end of the rear case 12 has two symmetrical lugs 122 , the two lugs 122 enable the test connector 10 to be locked on the test bench, and a rear end of the rear case 12 has a rear The opening 123 and an external thread portion 124 are used for screwing the coaxial cable test line and connecting the pre-tested PCB circuit board module.

The inner casing 2 is disposed inside the front casing 11 , and has a first blocking portion 21 and a second blocking portion 22 on the outer surface of the inner casing 2 . The first blocking portion 21 and the second blocking portion 22 is disposed on a second blocking wall 114 and a third blocking wall 115 on the inner surface of the front casing 11 . A protruding section 23 is provided on the first blocking portion 21 of the inner casing 2 , and the protruding section 23 is used to sleeve the elastic element 4 .

The male casing 3 is disposed inside the front casing 11 and is located in front of the inner casing 2 . There is a distance between the end of the male casing 3 and the protruding section 23 of the inner casing 2 . The outer surface of the male housing 3 has a projection 31, the projection 31 is pressed against the first blocking wall 113 of the front housing 11, so that the extension 32 of the front end of the male housing 3 is supported by the The front opening 111 of the front case 11 extends to the outside. The front end of the extension section 32 has a male joint body 33 , and the outer surface of the male joint main body 33 has an inclined surface (or arc surface) 331 . The inclined surface (or arcuate surface) 331 maintains a minimum gap when the male connector body 33 is assembled with the female connector (not shown in the figure), so as to maintain the best coaxiality and obtain the best electrical characteristic performance. The male connector main body 33 has at least one slot 332 . The slot 332 enables a plurality of elastic elastic pieces 333 to be formed on the male joint main body 33 . The outer surfaces of the elastic pieces 333 have a fixing portion 334 and an oblique portion 334 . Corner (or rounded corner) 335, this beveled corner (or rounded corner) 335 is squeezed by the inner wall of the opening of the female connector during the test insertion, so that the inner diameter of the elastic pieces 333 shrinks, so that the elastic pieces 333 can be easily introduced After being inserted into the female connector, after the elastic pieces 333 are inserted into the female connector, the elastic pieces 333 themselves spring open, so that the fixing portion 334 is fixedly positioned in the female connector. The elastic element 4 is disposed between the protrusion 31 of the male housing 3 and the protruding section 23 of the inner housing 2. When the male housing 3 is inserted into the female connector, the elastic The element 4 causes the male housing 3 to produce a buffering action of retracting backwards, so that the main body 33 of the male connector can be smoothly inserted into the female connector.

The insulating assembly 5 includes a first insulating member 51 and a second insulating member 52 . One end of the first insulating member 51 is disposed inside the inner casing 2 , and the other end is protruded from the protruding section 23 and extends inside the male casing 3 . The second insulating member 52 is disposed in the rear casing 12 . and the end of the inner shell 2 The first insulating member 51 and the second insulating member 52 each have a through hole 511 and 521 for the central conductor 6 to pass through.

The center conductor 6 has a center pin 61 at its front end. The center pin 61 is disposed through the through hole 521 of the second insulating member 52 and the through hole 511 of the first insulating member 51, and extends into the male connector body 33, where the male connector body 33 and the female connector are inserted When connected, the center pin 61 can be smoothly inserted into the female pin of the female connector. In addition, the end of the center conductor 6 has at least one slit 62, and the slit 62 makes the end of the center conductor 6 form a plurality of elastic pieces 63 for clamping the coaxial adapter (not shown in the figure) the center needle.

Please refer to FIG. 3 , which is a schematic diagram of the test connector installed on the test machine according to the first embodiment of the present invention. As shown in the figure: when the present invention is in use, the two lugs 122 of the rear casing 12 of the plurality of test connectors 10 are locked on the test machine 20, and each test connector 10 corresponds to a test circuit The female connector 30 electrically fixed on the board 40 .

During the test, after the coaxial cable (not shown in the figure) is electrically fixed with the rear casing 12 of the test connector 10, the male head casing 3 is inserted into the female socket of the test circuit board (not shown in the figure). The PCB circuit board module can be tested on the connector.

Please refer to FIGS. 4-6 , which are schematic diagrams 1-3 of actions performed by the test connector of the first embodiment of the present invention for testing. As shown in the figure: after the test connector 10 is electrically fixed to the coaxial cable (not shown in the figure), the machine 20 will drive all the test connectors 10 to be inserted into the female connector 30. The bevels 335 of the elastic pieces 333 are pressed by the inner wall of the opening 301 of the female connector 30 , so that the inner diameters of the elastic pieces 333 are retracted, and the elastic pieces 333 are inserted into the female connector 30 . After the female connector 30 is inserted, the elastic pieces 333 are elastically opened, so that the fixing portion 334 is fixed and positioned in the positioning groove 302 of the female connector 30 . At the same time, the center pin 61 on the center conductor 6 is also inserted into the female pin 303 of the female connector 30 .

When the male housing 3 is plugged into the female connector 30 , the elastic element 4 causes the male housing 3 to produce a buffering action of retracting backwards, so that the male connector body 33 can be smoothly inserted into the female connector 30 middle. A plurality of elastic springs are formed by the slot 332 of the male joint body 33 The bevels (or rounded corners) 335 of the outer surfaces of the sheet 333 and the elastic pieces 333 are designed so that the test connector 10 can be easily separated from the female connector 30 after the test is completed, and the test connector 10 can be easily separated from the female connector 30 when the test connector 10 is separated from the female connector 30. The test connector 10 will not be damaged or difficult to pull out.

Please refer to FIG. 7 , which is a schematic side cross-sectional view of the test connector of the second embodiment of the present invention. As shown in the figure, the present embodiment is substantially the same as the first embodiment, the difference lies in the central conductor 7 , which includes a sleeve 71 , an elastic element 72 and a central needle 73 . The sleeve 71 is disposed in the through hole 521 of the second insulating member 52 and the through hole 511 of the first insulating member 51 . A plurality of elastic sheet bodies 712 are formed at the end of the tube 71 for clamping the central needle of the coaxial cable (not shown in the figure). When the elastic element 72 and the central needle 73 are arranged in the sleeve 71 in sequence, the locking portion 731 at the end of the central needle 73 is clamped in the sleeve 71, and the needle body 732 of the central needle 73 passes through the sleeve. The tube 71 extends into the male connector body 33 through the through hole 511 of the first insulating member 51 . When the male connector body 33 is inserted into the female connector, the elastic element 72 makes the needle body 732 of the central needle 73 A buffering action of retracting backwards is generated, so that the needle body 732 can be smoothly inserted into the female needle of the female connector.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the scope of the patent application for this creation are covered by the scope of the patent application for this creation.

10: Test Connector

1: Shell

11: Front housing

111: Front opening

112: External joint

113: The first barrier

114: Second barrier

115: The third barrier

12: Rear shell

121: Internal joint

123: rear opening

124: External thread part

2: Inner shell

21: First gear

22: Second gear

23: Protruding segment

3: Male housing

31: bump

32: Extension

33: Male connector body

331: Inclined surface

332: Slotted

333: Shrapnel

334: Fixed part

335: Bevel

4: Elastic element

5: Insulation components

51: The first insulating part

52: Second insulation

511, 521: Through hole

6: Center conductor

61: center pin

62: Slotting

63: Shrapnel body

Claims (10)

A test joint of a coaxial connector is fixed on a machine table and plugged with a female joint, the test joint comprises: a shell with two symmetrical lugs on it, the two lugs lock the test joint on the testing machine; an inner shell is arranged inside the outer shell; a male head shell is arranged inside the outer shell; an elastic element is arranged between the male head shell and the outer surface of the inner shell between; an insulating component, which is arranged in the outer casing, the inner casing and the male header; a center conductor is arranged inside the outer casing and passes through the insulating component, the inner casing and the male header a housing; wherein, the male housing has an extension section passing through the outer casing, the front end of the extension section has a male joint main body, the male joint main body has at least one slot, the slot makes the male joint main body A plurality of elastic shrapnels are formed, and there is a fixing part on the outer surface of these shrapnel. When the test plug is pressed, the inner diameter of the shrapnel is compressed by the female connector, so that the shrapnel is inserted into the In the cavity of the female connector, a certain degree of contact force and retention force are formed. The test connector of claim 1, wherein the housing comprises a front housing and a rear housing, the inner and outer surfaces of the front housing are stepped, and the front housing has a front opening at the front end and a front end at the end. an outer joint part assembled with an inner joint part of the rear shell; the two lugs are arranged at the front end of the rear shell, and have a rear opening and an external thread part at the end of the rear shell . The test connector according to claim 2, wherein the inner casing is disposed inside the front casing, an outer surface of the inner casing has a first blocking portion and a second blocking portion, the first blocking portion and the The second blocking portion is disposed on a second blocking wall and a third blocking wall on the inner surface of the front casing; a protruding section is provided on the first blocking portion of the inner casing. The test connector of claim 3, wherein the male housing is disposed inside the front housing and is located in front of the inner housing, the end of the male housing and the protruding section of the inner housing are There is a distance between them; the outer surface of the male shell has a bump, the bump is against the first blocking wall of the front shell, so that the extension section of the front end of the male shell can pass from the front The front opening of the housing extends to the outside. The test connector of claim 4, wherein the elastic element is fitted between the protruding block of the male housing and the protruding section of the inner housing. The test connector according to claim 5, wherein the insulating component comprises a first insulating member and a second insulating member, one end of the first insulating member is disposed inside the inner casing, and the other end is penetrated by the protruding section The extension extends inside the male housing, the second insulating member is arranged in the end of the rear housing and the inner housing, and each of the first insulating member and the second insulating member has a center for the center A through hole through which the conductor passes. The test connector of claim 6, wherein the front end of the center conductor has a center pin, and the center pin extends through the through hole of the second insulator and the through hole of the first insulator In the main body of the male connector; in addition, the end of the central conductor has at least one slot, and the slot enables the end of the central conductor to form a plurality of elastic pieces. The test connector as claimed in claim 6, wherein the central conductor comprises a sleeve, an elastic element and a center pin; the sleeve is disposed in the through hole of the second insulating member and the first insulating member In the through hole, the end of the sleeve has at least one slit, and the slit enables the end of the sleeve to form a plurality of elastic sheet bodies, the elastic element and the central needle are sequentially arranged inside the sleeve, A latching portion at the end of the center needle is clamped in the sleeve, and a needle body of the center needle passes through the sleeve and the through hole of the first insulating member, and extends to the main body of the male connector middle. The test connector of claim 1, wherein the outer surface of the male connector body has an inclined surface or an arc surface, and the inclined surface or the arc surface maintains a minimum gap when the male connector body is assembled with the female connector. The test connector of claim 1, wherein the outer surfaces of the elastic pieces further include a bevel or a rounded corner.

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