CN101662115B - Floating signal contact element and electric connector using the same - Google Patents

Abstract

The invention discloses a floating signal contact piece and an electrical connector using the contact piece. The contact piece includes an inner conductor and an outer conductor, and a spring is set on the outer wall of the outer conductor between the first and second axial limit structures. and a sliding sleeve slidingly matched with the outer wall of the outer conductor. The axial limit of the sliding sleeve is assembled between the spring and the second axial limit structure. The radially retractable structure and the third axially limiting structure, the elastic radially retractable structure and the third axially restricting structure are disposed opposite to each other and form a storage limiting space between the two for accommodating the entry of the convex part of the housing. The outer conductor of the signal contact piece of the present invention can be detachably assembled with the connector housing through the sliding sleeve fitted on it and matched with the axial limit of the spring, and the elastic radial retractable structure on the sliding sleeve can be connected with the connector The corresponding structures in the shell are snap-fitted to limit fit or be fixed together, and can be tightened by a removal tool to achieve separation.

Description

Floating signal contact and electrical connector using same

technical field

The invention relates to the technical field of electrical connectors.

Background technique

Existing electrical connectors for radio frequency signal transmission generally include a housing and signal contacts installed therein, and the signal contacts include an outer conductor and an inner conductor fixed in the outer conductor through an insulator. The outer conductor of the existing signal contact It is generally fixedly assembled with the housing of the electrical connector. In order to make the signal contact have a certain impact resistance, a spring is installed between the outer conductor and the housing of some signal contacts to achieve relative movement. Due to various Due to the difference in the size of the shell structure of the connector, the matching structure between the existing signal contact and the shell is relatively complicated, it is difficult to assemble and disassemble, and the volume is large, which makes it difficult to manufacture such signal contacts as standard parts and cannot adapt to connection. The need for standardization and miniaturization of device design.

Contents of the invention

The object of the present invention is to provide a floating signal contact piece with relatively movable inner and outer conductors and the connector housing, a simple and reliable matching structure with the connector housing, and a small space occupation, as well as an electrical connector using the contact piece.

The technical solution of the floating signal contact of the present invention is: a floating signal contact, including an inner conductor and an outer conductor, the outer conductor has a plug-in end that is plugged into the matching contact, and the outer wall of the outer conductor is located near the plug The first and second axial limit structures are respectively provided at the connection end and the place far away from the plug-in end. The outer wall of the outer conductor is provided with a spring between the first and second axial limit structures and is slidingly fitted with the outer wall of the outer conductor. The sliding sleeve, the axial limit of the sliding sleeve is assembled between the spring and the second axial limit structure, and the outer wall of the sliding sleeve is provided with an elastic radial retractable structure and a second axially retractable structure that are snap-fitted with the housing of the adapter connector. The three-axis limiting structure, the elastic radial retractable structure is arranged opposite to the third axial limiting structure, and a storage limiting space for accommodating the convex part of the connector housing to enter is formed between the two.

The first axial limiting structure is a first annular stepped surface provided on the outer wall of the outer conductor near the plug-in end.

The outer conductor includes a floating outer conductor and a back sleeve for connecting with a radio frequency circuit, one end of the floating outer conductor is mated and fixed in the back sleeve, and the front end of the back sleeve forms a second The annular step surface forms the second axial limit structure; the inner hole wall of the sliding sleeve is provided with an annular step to cooperate with the axial limit of the front end surface of the rear sleeve.

A radial gap is provided between the outer conductor and the sliding sleeve.

The elastic radial retracting structure on the sliding sleeve is an elastic snap ring snapped on the outer wall of the sliding sleeve, the third axial limiting structure is a third annular stepped surface protruding from the sliding sleeve, and the elastic snap A thin neck structure is formed on the outer wall of the sheath between the ring and the third annular step surface to constitute the storage limit space.

The technical solution of the electrical connector of the present invention is: an electrical connector, comprising a connector housing and a floating signal contact assembled in a contact mounting hole therein, the floating signal contact including an inner conductor and an outer conductor, The outer conductor has a plug-in end that is mated with the matching contact, and it is characterized in that: the outer wall of the outer conductor is provided with a first and a second axial limit structure at a place close to the plug-in end and a place far away from the plug-in end, The outer wall of the outer conductor is fitted with a spring and a sliding sleeve slidingly fitted with the outer wall of the outer conductor between the first and second axial limiting structures. Between the structures, the outer wall of the sliding sleeve is provided with an elastic radial retractable structure and a third axial limit structure that are engaged with the housing of the adapter connector, and the elastic radial retractable structure is opposite to the third axial limit structure An accommodating and limiting space for the entry of the protrusion provided on the accommodating shell is provided and formed between the two.

The first axial limiting structure is a first annular stepped surface provided on the outer wall of the outer conductor near the plug-in end.

The outer conductor includes a floating outer conductor and a back sleeve for connecting with a radio frequency circuit, one end of the floating outer conductor is mated and fixed in the back sleeve, and the front end of the back sleeve forms a second The annular step surface forms the second axial limit structure; the inner hole wall of the sliding sleeve is provided with an annular step to cooperate with the axial limit of the front end surface of the rear sleeve.

A radial gap is provided between the outer conductor and the sliding sleeve.

The elastic radial retracting structure on the sliding sleeve is an elastic snap ring snapped on the outer wall of the sliding sleeve, the third axial limiting structure is a third annular stepped surface protruding from the sliding sleeve, and the elastic snap A thin neck structure is formed on the outer wall of the sheath between the ring and the third annular step surface to constitute the storage limit space.

The outer conductor of the floating signal contact of the present invention can be detachably assembled with the connector housing through the sliding sleeve fitted on it and matched with the axial limit of the spring, and the elastic radial retractable structure on the sliding sleeve can be connected with the The corresponding structure in the housing of the device is clamped and limited fit or fixed together, and can be pressed and tightened by the removal tool to achieve separation. The elastic radial retractable structure can be selected from elastic snap rings, shrapnel connected to the sliding sleeve, Tongue holes and similar structures that can be elastically retracted in the radial direction; because the elastic radially retractable structure occupies a small space in the connector, it can achieve high-density arrangement of the contacts in the connector body, thereby realizing the connector's miniaturization. When a pair of connectors equipped with the contact piece are mated, the high-frequency socket contact piece and the high-frequency pin contact piece are in close contact under the action of the spring force, and the electrical length of the connector will not change, thereby realizing the connector The phase stabilization function improves the anti-vibration and shock performance of the connector at the same time. The connection or disconnection of the radio frequency circuit can be realized by the connector driving the high-frequency pin contact and the high-frequency jack contact to be mated or separated.

In addition, the outer conductor of the present invention is composed of a floating outer conductor at the front end and a rear sleeve fixedly sleeved on the rear end of the floating outer conductor. The limit step surface matched with the sleeve, the split structure facilitates the assembly and positioning of the sliding sleeve, and the rear sleeve can also protect the cables or pins of the connected radio frequency circuit.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a high-frequency jack contact of the present invention;

Fig. 2 is a schematic diagram of the mating structure of the contact in Fig. 1 and the adapted high-frequency pin contact;

Fig. 3 is a three-dimensional schematic diagram of a snap ring on the contact in Fig. 1;

4 is a schematic structural view of the electrical connector of the present invention;

Fig. 5 is a schematic structural diagram of the mated state of the electrical connector of the present invention.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, the embodiment of the floating signal contact of the present invention is a high-frequency socket contact, including a floating outer conductor 1 with a through hole inside, and a floating outer conductor 1 inside the floating outer conductor 1. A sleeve-shaped insulator 3 is installed in the through hole, an inner conductor 6 is installed in the inner sleeve hole of the insulator 3, and one end of the floating outer conductor 1 is a plug-in end for plugging in with an adapted high-frequency pin contact. The other end is mated and fixed in a rear sleeve 7 used for connecting other radio frequency circuits, and the front end surface of the rear sleeve 7 forms a second annular stepped surface on the periphery of the joint of the outer wall of the floating outer conductor 1 . The outer wall of the floating outer conductor 1 close to the plug-in end is provided with a ring platform to form a first annular step surface, and the outer wall of the floating outer conductor 1 behind the first annular step surface is sequentially fitted with springs 2 and slidingly matched with the outer wall of the floating outer conductor 1 The sliding sleeve 4 is provided with a ring groove 41 on the outer wall of the sliding sleeve 4, and a snap ring 5 is installed through the ring groove 41. The structure of the snap ring 5 is shown in Figure 3. The snap ring 5 is an open elastic sleeve. The outer circumference of the ring 5 is a tapered surface with the small end facing the spring 2, and the end surface of the large end of the snap ring 5 protrudes outside the ring groove 41 to form an annular step surface. The sliding sleeve 4 is placed on the side of the ring groove 41 away from the spring. A third annular stepped surface 42 opposite to the large end surface of the snap ring 5 is provided protrudingly on the outer wall. A narrow neck structure is formed between the third annular step surface 42 and the end surface of the large end of the snap ring 5 , and the narrow neck structure forms a limiting storage space for the convex part of the adapted connector housing to snap into the limiting position. The snap ring 5 is used for installation between the high-frequency jack contact and the connector housing.

The two ends of the spring 2 are installed between the first annular step surface and the front end surface of the sliding sleeve 4, and the inner hole wall of the sliding sleeve 4 is provided with an annular step to match with the second annular step surface where the front end surface of the rear sleeve 7 is located. and is axially limited. The floating outer conductor 1, the back cover 2, the insulator 3 and the inner conductor 6 together form a radio frequency transmission channel. There is a radial gap between the floating outer conductor 1, the rear sleeve 2 and the sliding sleeve 4, plus the deformation of the spring 2, the floating outer conductor 1, the rear sleeve 2 and the outer shell can move relative to the radial or axial direction, thereby achieving high The floating contact between the high-frequency jack contact and the adapted high-frequency pin contact during insertion. As shown in Figure 2, the high-frequency socket contact 20 in Figure 1 is mated with the matching pin contact 30, and the outer conductor of the high-frequency socket contact moves backward under pressure. This floating can ensure high The high-frequency pin contact 30 and the high-frequency socket contact 20 are in contact under a certain pressure, so they can always be in close and reliable contact.

As shown in Figure 4, in the embodiment of the electrical connector of the present invention, the housing 22 of the electrical connector 21 is provided with a plurality of contact mounting holes, and each contact mounting hole is equipped with a high-frequency jack as shown in Figure 1 For the contact piece, a ring platform 23 protrudes from the wall of the contact piece installation hole, and the ring platform 23 is axially limited and fitted between the snap ring 5 of the high frequency contact piece and the third annular step surface 42 of the sliding sleeve 4 . The snap ring 5 is an elastic part, which can realize the removal function of the contact piece in the electrical connector through its elastic change. When removing, press the snap ring 5 with the removal tool to shrink, and the axial limit between the snap ring 5 and the ring platform 23 of the housing 22 is released, so that the contact is pulled out from the corresponding contact mounting hole .

As shown in Figure 5, the electrical connector 21 of the present invention is mated with the matching electrical connector 31, and the matching electrical connector 31 is equipped with a pin contact, and the high-frequency pin contact and the high-frequency pin contact are driven by the corresponding connector. The insertion or separation of the radio frequency jack contacts can realize the connection or disconnection of the radio frequency circuit.

The first, second, and third annular step surfaces in the above embodiments respectively form the first, second, and third axial limiting structures, and each axial limiting structure is formed integrally or through the end surface of the casing. ,, according to design and application requirements, as well as common knowledge in the art, the above-mentioned axial limit structures can also be in other forms not listed in the above-mentioned embodiments, such as correspondingly sleeved on the shaft section The ring, the front sleeve, the rear sleeve, the step surface is processed on the shaft section, etc., these changes and differences should belong to the technical characteristics of the equivalent replacement of the specific axial limit structure in the embodiment, and only the above-mentioned differences The technical solution should fall within the scope of protection claimed by the present invention.

Claims (10)

1. A floating signal contact, comprising an inner conductor and an outer conductor, and the outer conductor has a plug-in end that is mated with an adapter contact, and it is characterized in that: the outer wall of the outer conductor is near the plug-in end and away from the plug-in end. The first and second axial limiting structures are respectively provided at the connection ends, and the outer wall of the outer conductor is provided with a spring and a sliding sleeve slidingly fitted with the outer wall of the outer conductor between the first and second axial limiting structures. The axial limit of the sliding sleeve is assembled between the spring and the second axial limit structure, and the outer wall of the sliding sleeve is provided with an elastic radial retractable structure and a third axial limit structure that are snap-fitted with the housing of the adapter connector , the elastic radial retractable structure is arranged opposite to the third axial limiting structure, and a storage limiting space for accommodating the protrusion of the adapted connector housing to enter is formed between them. 2 . The floating signal contact according to claim 1 , wherein the first axial limiting structure is a first annular stepped surface provided on the outer wall of the outer conductor close to the plug-in end. 3 . 3. The floating signal contact according to claim 1, characterized in that: the outer conductor includes a floating outer conductor and a rear sleeve for connecting with a radio frequency circuit, one end of the floating outer conductor is mated and fixed in the rear sleeve, The front end surface of the rear sleeve forms a second annular step surface on the periphery of the connection of the outer wall of the floating outer conductor to become the second axial limiting structure; the inner hole wall of the sliding sleeve is provided with an annular step and the rear sleeve The axial limit fit of the front face. 4. The floating signal contact according to claim 1, wherein a radial gap is provided between the outer conductor and the sliding sleeve. 5. The floating signal contact according to claim 1 or 2 or 3 or 4, characterized in that: the elastic radial retractable structure on the sliding sleeve is an elastic snap ring snapped on the outer wall of the sliding sleeve, so The third axial limiting structure is a third annular stepped surface protruding from the sliding sleeve, and a thin neck structure is formed on the outer wall of the sheath between the elastic snap ring and the third annular stepped surface to form the storage limiting space . 6. An electrical connector, comprising a connector housing and a floating signal contact piece assembled in a contact mounting hole therein, the floating signal contact piece comprising an inner conductor and an outer conductor, the outer conductor having It is characterized in that: the outer wall of the outer conductor is respectively provided with first and second axial limit structures at the places close to the insertion end and at the places far away from the insertion end, and the outer wall of the outer conductor is located at the first and second The limit sleeve between the axial limit structures is equipped with a spring and a sliding sleeve that slides with the outer wall of the outer conductor. The axial limit of the sliding sleeve is assembled between the spring and the second axial limit structure. There is an elastic radial retractable structure and a third axial limiting structure which are engaged with the housing of the adapter connector. The elastic radial retractable structure is set opposite to the third axial limiting structure and forms an accommodation between them. The storage limit space that the protrusion provided on the casing enters. 7. The electrical connector according to claim 6, wherein the first axial limiting structure is a first annular stepped surface provided on the outer wall of the outer conductor close to the plug-in end. 8. The electrical connector according to claim 6, wherein the outer conductor includes a floating outer conductor and a rear sleeve for connecting with a radio frequency circuit, one end of the floating outer conductor is mated and fixed in the rear sleeve, and the rear sleeve The front end surface of the sleeve forms a second annular step surface on the periphery of the connection of the outer wall of the floating outer conductor to become the second axial limiting structure; the inner hole wall of the sliding sleeve is provided with an annular step and the front end of the rear sleeve. Face axial limit fit. 9. The electrical connector according to claim 6, wherein a radial gap is provided between the outer conductor and the sliding sleeve. 10. The electrical connector according to claim 6 or 7 or 8 or 9, characterized in that: the elastic radial retractable structure on the sliding sleeve is an elastic snap ring snapped on the outer wall of the sliding sleeve, and the The third axial limiting structure is a third annular stepped surface protruding from the sliding sleeve, and a thin neck structure is formed on the outer wall of the sheath between the elastic snap ring and the third annular stepped surface to form the storage limiting space.

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