CN114566824A - Floating millimeter wave radio frequency coaxial adapter - Google Patents

Abstract

The invention relates to a floating millimeter wave radio frequency coaxial adapter, which comprises an inner elastic contact element mechanism, wherein when the inner elastic contact element mechanism is in an axial floating state, a conductive contact of the inner elastic contact element mechanism axially slides; an outer resilient contact means adapted to be compressed by the axial spring to cause axial sliding movement of the conductive contact when in an axially floating condition; the left insulator is respectively connected with the left ends of the inner elastic contact element mechanism and the outer elastic contact element mechanism; and the right insulator is respectively connected with the right ends of the inner elastic contact element mechanism and the outer elastic contact element mechanism. When the connector is in an axial floating state, the spring provides effective elastic force to keep the connector normally connected with an external interface, and meanwhile, proper clearance fit is adopted to guarantee the coaxiality requirement, so that the phenomenon of locking is avoided, and high performance transmission can be achieved within a floating size range.

Description

Floating mmWave RF Coaxial Adapter

technical field

The invention relates to a floating millimeter wave radio frequency coaxial adapter.

Background technique

The adapter is a mechanical element with electrical connection characteristics. Its main function is to play the role of electrical connection and signal transmission between various interfaces. It is one of the essential basic components that constitute the electrical connection of the entire circuit system.

Nowadays, more and more board-to-board connections are made of blind-mate connections. Ordinary millimeter-wave blind-mate adapters can meet most modular, integrated, and intensive use occasions. However, ordinary millimeter-wave adapters will cause board deformation due to hard contact between boards, or install gaps due to the accumulation of dimensional errors in board spacing. With the increase in use frequency and performance, it is no longer possible to Meet the transmission requirements of high-quality RF signals. Therefore, there is a need for a floating millimeter-wave coaxial adapter to solve this problem.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a floating millimeter wave radio frequency coaxial adapter, which solves the problem that when the conventional millimeter wave radio frequency coaxial adapter is connected between boards, the Hard contact or installation gap occurs between the boards, so that the corresponding interface between the two boards is always in an unreliable connection state, which affects the transmission of radio frequency signals.

The technical scheme adopted by the present invention to solve its technical problems is:

A floating millimeter-wave RF coaxial adapter is provided, including

In the inner elastic contact mechanism, when it is in an axial floating state, its conductive contacts slide axially;

The outer elastic contact mechanism is suitable for axial spring compression, and when it is in an axial floating state, its conductive contacts slide axially;

a left insulator, which is respectively connected with the left ends of the inner elastic contact piece mechanism and the outer elastic contact piece mechanism, so that the left end of the inner elastic contact piece mechanism and the left end of the outer elastic contact piece mechanism are in an insulated state;

The right insulator is connected with the right ends of the inner elastic contact piece mechanism and the outer elastic contact piece mechanism respectively, so that the right end of the inner elastic contact piece mechanism and the right end of the outer elastic contact piece mechanism are in an insulated state.

Further, the inner elastic contact member mechanism includes

an insertion hole, one end of which is inserted into the left insulator and is fixedly connected with the left insulator, and an insertion hole is provided at the other end, and the insertion hole is suitable for the insertion and matching of the opposite insertion part;

One end of the pin insert is inserted into the right insulator and is fixedly connected with the right insulator, and the other end is provided with a plug-in part, the plug-in part is inserted into the jack and is suitable for sliding conductive contacts in the jack.

Further, at least one split groove is set on the side wall of the socket.

Further, the outer elastic contact member mechanism includes

The left contact head, one end of which is sleeved outside the left insulator, and is fixedly connected with the left insulator, and the other end is connected to the sleeve;

The right contact head, one end of which is sleeved outside the right insulator and fixedly connected with the right insulator, the other end of which is suitable for being inserted into the sleeve and sliding with the conductive contact in the sleeve, and the right contact head is fixed to the casing connect;

The casing, one end of which is sleeved outside the right contact head and is fixedly connected with the right contact head, and the other end is provided with an inner stop ring, the inner stop ring is sleeved outside the sleeve and is suitable for forming a sliding fit with the sleeve, The inner baffle ring abuts against the outer baffle ring on the sleeve to restrict the outer casing from sliding out of the sleeve, and an axial floating distance is set between the outer casing and the left contact head;

A sleeve, one end of which is inserted into the left contact head, and is fixedly connected with the left contact head, the cylinder hole at the other end is suitable for conducting contact sliding with the right contact head, the end of the sleeve is provided with an outer stop ring, the The outer baffle ring is located in the casing and is suitable for abutting with the inner baffle ring of the casing to restrict the sleeve from sliding out of the casing, and an axial floating distance is set between the end of the sleeve and the right contact head;

One end of the spring is in contact with the left contact head, and the other end is in contact with the casing, so that the inner stop ring and the outer stop ring are axially abutted.

Further, a radial gap is provided between the inner retaining ring and the outer wall of the sleeve;

A radial gap is provided between the outer baffle ring and the inner wall of the casing.

Further, outer barbs are provided on the socket parts and the pin parts, and the outer barbs are embedded in the insulator to restrict the socket parts and the pin parts from moving in the insulator.

Further, the left contact head and the right contact head are provided with inner barbs, and the inner barbs are embedded in the insulator to limit the movement of the insulator in the contact head.

The beneficial effects of the present invention are:

When the connector is in the axial floating state, the spring provides an effective elastic force to maintain its normal connection with the external interface, and at the same time, the appropriate clearance fit is used to ensure the coaxiality requirements without jamming, and it can be used within the floating size range. Get high performance transmission within.

Through the design of constant dislocation compensation size, when the adapter floats, it can keep the adapter and the corresponding interface on the mounting plate in good contact, ensure performance stability, and ensure normal connection; the internal and external elastic contact structure is always in meshing state, During the floating process of the adapter, the electrical continuity of the inner and outer elastic contact mechanism is ensured.

The elastic force generated by the external force of the spring can ensure that the adapter can always be inserted in place normally when it is matched with the external interface, avoid hard contact and installation gap during installation between boards, and ensure high-quality signal transmission.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings.

1 is a half-section view of a floating millimeter-wave radio frequency coaxial adapter of the present invention;

Figure 2 is the inner elastic contact mechanism

Fig. 3 is the connection structure diagram of the sleeve and the right contact head;

in,

2. Internal elastic contact piece mechanism, 21, socket piece, 211, split groove; 22, pin piece, 221, plug-in part;

3. Outer elastic contact mechanism, 31, left contact head, 32, right contact head, 33, shell, 331, inner retaining ring, 34, sleeve, 341, outer retaining ring, 35, spring;

41, left insulator, 42, right insulator;

51, outer barb, 52, inner barb.

Detailed ways

The present invention will now be further described with reference to the accompanying drawings. These drawings are all simplified schematic diagrams and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

As shown in Fig. 1 to Fig. 3, a floating millimeter wave radio frequency coaxial adapter, including

In the inner elastic contact mechanism 2, when it is in an axial floating state, its conductive contacts slide axially;

The outer elastic contact piece mechanism 3 is suitable for axial spring compression, and when it is in an axial floating state, its conductive contacts slide axially;

The left insulator 41 is connected to the left ends of the inner elastic contact piece mechanism 2 and the outer elastic contact piece mechanism 3 respectively, so that the left end of the inner elastic contact piece mechanism 2 and the left end of the outer elastic contact piece mechanism 3 are in an insulated state;

The right insulator 42 is connected to the right ends of the inner elastic contact piece mechanism 2 and the outer elastic contact piece mechanism 3 respectively, so that the right end of the inner elastic contact piece mechanism 2 and the right end of the outer elastic contact piece mechanism 3 are in an insulated state.

In this embodiment, the insulator is made of polytetrafluoroethylene ethylene material.

Specifically, as an optional implementation manner in this embodiment, as shown in FIG. 2 , the inner elastic contact member mechanism 2 includes

The socket member 21 has one end inserted into the left insulator 41 and is fixedly connected with the left insulator 41, and the other end is provided with a socket, which is suitable for the insertion and cooperation of the opposite plug portion 221;

One end of the pin member 22 is inserted into the right insulator 42 and fixedly connected to the right insulator 42, and the other end is provided with a plug portion 221, which is inserted into the jack and is suitable for conducting electricity in the jack Contact slip.

In this embodiment, the socket member 21 and the pin member 22 are both made of beryllium bronze material.

In this embodiment, the socket member 21 and the pin member 22 are always in an engaged state, so that the electrical continuity of the inner conductor can be ensured, and a stable and continuous electrical signal can be obtained.

Specifically, as an optional implementation manner in this embodiment, as shown in FIG. 2 , at least one split groove 211 is defined on the side wall of the insertion hole. There are four split grooves 211, which are evenly distributed in the circumferential direction.

Specifically, as an optional implementation manner in this embodiment, as shown in FIG. 1 and FIG. 3 , the outer elastic contact member mechanism 3 includes

One end of the left contact head 31 is sleeved outside the left insulator 41 and is fixedly connected with the left insulator 41, and the other end is connected to the sleeve 34;

The right contact head 32 has one end sleeved outside the right insulator 42 and is fixedly connected with the right insulator 42, and the other end of the right contact head 32 is suitable for being inserted into the sleeve 34 and sliding with the conductive contact in the sleeve 34. The contact head 32 is fixedly connected with the housing 33;

The outer casing 33 has one end sleeved outside the right contact head 32 and is fixedly connected with the right contact head 32, and the other end is provided with an inner stop ring 331, the inner stop ring 331 is sleeved outside the sleeve 34 and is suitable for connecting with the right contact head 32. The sleeve 34 forms a sliding fit, and the inner baffle ring 331 abuts against the outer baffle ring 341 on the sleeve 34 to restrict the casing 33 from sliding out of the sleeve 34 . There is an axial floating spacing;

The sleeve 34 has one end inserted into the left contact head 31 and is fixedly connected with the left contact head 31, and the cylinder hole at the other end is suitable for sliding the conductive contact with the right contact head 32, and the end of the sleeve 34 is provided with an external A blocking ring 341, the outer blocking ring 341 is located in the outer casing 33 and is suitable for abutting with the inner blocking ring 331 of the outer casing 33, so as to restrict the sleeve 34 from sliding out of the outer casing 33, and the end of the sleeve 34 is connected to the right An axial floating distance is set between the contact heads 32;

One end of the spring 35 is in contact with the left contact head 31, and the other end is in contact with the housing 33, so that the inner baffle ring 331 and the outer baffle ring 341 are axially abutted.

In this embodiment, the left contact head 31, the right contact head 32, the casing 33, the sleeve 34 and the spring 35 are all conductors;

In this embodiment, a plurality of split grooves 211 are provided at both ends of the right contact head 32 .

In this embodiment, an interference fit is adopted between the left contact head 31 and the sleeve 34 , and an interference fit is also adopted between the housing 33 and the right contact head 32 . It is ensured that separation will not occur under the action of the spring 35 to ensure the reliability of the structure.

In this embodiment, the floating distance can be controlled according to actual requirements, and the floating amount can be adjusted to a certain extent by changing the design dimensions of the sleeve 34 and the casing 33 .

Specifically, as an optional implementation in this embodiment, as shown in FIG. 1 , a radial gap is provided between the inner retaining ring 331 and the outer wall of the sleeve 34;

A radial gap is provided between the outer baffle ring 341 and the inner wall of the housing 33 .

In this embodiment, the setting of the radial gap can ensure the stable axial movement of the casing 33 relative to the sleeve 34, and ensure the floating effect without the occurrence of jamming.

Specifically, as an optional implementation in this embodiment, as shown in FIG. 1 and FIG. 2 , outer barbs 51 are provided on the socket parts 21 and the pin insertion parts 22 , and the outer barbs 51 are embedded in inside the insulator to limit the movement of the socket part 21 and the pin part 22 in the insulator. In this way, the positional fixity of the insulator on the socket part 21 and the pin part 22 can be ensured, and the performance stability can be ensured.

Specifically, as an optional implementation in this embodiment, as shown in FIG. 1 , the left contact head 31 and the right contact head 32 are provided with inner barbs 52, and the inner barbs 52 are embedded in the insulator , to limit the movement of the insulator within the contact head. In this way, the positional fixity of the insulator on the left contact head 31 and the right contact head 32 can be ensured, and the performance stability can be ensured.

In the floating millimeter-wave radio frequency coaxial adapter of the present invention, the inner elastic contact piece mechanism 2 and the outer elastic contact piece mechanism 3 are isolated by an insulator to prevent mutual influence and ensure independent conduction of electricity;

When the adapter floats, a constant impedance can be maintained to ensure performance stability; both the inner elastic contact mechanism 2 and the outer elastic contact mechanism 3 are always in the engaged state. During the floating process of the adapter, the respective inner and outer conductors are guaranteed Electrical continuity; the elastic force generated by the external force of the spring 35 can ensure that the adapter can always be inserted in place normally when it is matched with the external interface, avoid hard contact and installation gap during installation between boards, and ensure high-quality signal transmission.

The floating effect of the floating millimeter wave radio frequency coaxial adapter of the present invention is that the length of the adapter changes in the same direction with the change of the installation spacing of the boards, specifically: 1. When the spacing between the boards decreases, the length of the adapter changes in the same direction. 2. When the plate spacing increases, the spring tends to return to a free state when the external pressure decreases, and the structure The use of appropriate clearance fit in the spring is conducive to the recovery trend of the spring without jamming. When the spring elongates and changes, the matching length of the inner and outer elastic initial mechanism changes synchronously, so that the length of the adapter increases with the increase of the plate inspection tool, which can ensure that the adapter and the installation plate are always in the same position. Normal connection status, thus ensuring transmission performance.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (7)

1. a floating millimeter wave radio frequency coaxial adapter, is characterized in that, comprises In the inner elastic contact mechanism, when it is in an axial floating state, its conductive contacts slide axially; The outer elastic contact mechanism is suitable for axial spring compression, and when it is in an axial floating state, its conductive contacts slide axially; a left insulator, which is respectively connected with the left ends of the inner elastic contact piece mechanism and the outer elastic contact piece mechanism, so that the left end of the inner elastic contact piece mechanism and the left end of the outer elastic contact piece mechanism are in an insulated state; The right insulator is connected with the right ends of the inner elastic contact piece mechanism and the outer elastic contact piece mechanism respectively, so that the right end of the inner elastic contact piece mechanism and the right end of the outer elastic contact piece mechanism are in an insulated state. 2. The floating millimeter-wave radio frequency coaxial adapter according to claim 1, wherein The inner elastic contact mechanism includes an insertion hole, one end of which is inserted into the left insulator and is fixedly connected with the left insulator, and an insertion hole is provided at the other end, and the insertion hole is suitable for the insertion and matching of the opposite insertion part; One end of the pin insert is inserted into the right insulator and is fixedly connected with the right insulator, and the other end is provided with a plug-in part, the plug-in part is inserted into the jack and is suitable for sliding conductive contacts in the jack. 3. The floating millimeter-wave radio frequency coaxial adapter according to claim 2, wherein At least one split groove is set on the side wall of the socket. 4. The floating millimeter-wave radio frequency coaxial adapter according to claim 1, wherein The outer elastic contact mechanism includes The left contact head, one end of which is sleeved outside the left insulator, and is fixedly connected with the left insulator, and the other end is connected to the sleeve; The right contact head, one end of which is sleeved outside the right insulator and fixedly connected with the right insulator, the other end of which is suitable for being inserted into the sleeve and sliding with the conductive contact in the sleeve, and the right contact head is fixed to the casing connect; The casing, one end of which is sleeved outside the right contact head and is fixedly connected with the right contact head, and the other end is provided with an inner stop ring, the inner stop ring is sleeved outside the sleeve and is suitable for forming a sliding fit with the sleeve, The inner baffle ring abuts against the outer baffle ring on the sleeve to restrict the outer casing from sliding out of the sleeve, and an axial floating distance is set between the outer casing and the left contact head; A sleeve, one end of which is inserted into the left contact head, and is fixedly connected with the left contact head, the cylinder hole at the other end is suitable for conducting contact sliding with the right contact head, the end of the sleeve is provided with an outer stop ring, the The outer baffle ring is located in the casing and is suitable for abutting with the inner baffle ring of the casing to restrict the sleeve from sliding out of the casing, and an axial floating distance is set between the end of the sleeve and the right contact head; One end of the spring is in contact with the left contact head, and the other end is in contact with the casing, so that the inner stop ring and the outer stop ring are axially abutted. 5. The floating millimeter-wave radio frequency coaxial adapter according to claim 4, wherein A radial gap is provided between the inner retaining ring and the outer wall of the sleeve; A radial gap is provided between the outer baffle ring and the inner wall of the casing. 6. The floating millimeter-wave radio frequency coaxial adapter according to claim 2, wherein External barbs are arranged on the socket parts and the pin parts, and the outer barbs are embedded in the insulator to limit the movement of the socket parts and the pin parts in the insulator. 7. The floating millimeter-wave radio frequency coaxial adapter according to claim 4, wherein The left contact head and the right contact head are provided with inner barbs, and the inner barbs are embedded in the insulator to restrict the movement of the insulator in the contact head.

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