阅读说明：本技术 自配对板对板连接器、接触件组以及绝缘壳体 (Self-aligned board-to-board connector, contact group and insulating housing ) 是由 张磊 李心宁 鲍小会 于 2020-11-30 设计创作，主要内容包括：本发明关于一种自配对板对板连接器接触件组以及绝缘壳体,该连接器包括公排端子和母排端子,所述公排端子和母排端子中的一个为弹性接触件,另一个为与之适配的刚性接触件。本发明连接器将弹性接触件和刚性接触件集为一体,通过弹性接触件和刚性接触件的配合大大减小了现有弹性接触件与弹性接触件配合的装配空间和插合空间,由此减小了连接器的体积,满足小型化需求。(The invention relates to a contact piece group of a self-matching plate-to-plate connector and an insulating shell. The connector integrates the elastic contact element and the rigid contact element, and the matching of the elastic contact element and the rigid contact element greatly reduces the assembling space and the inserting space of the existing elastic contact element and the elastic contact element, thereby reducing the volume of the connector and meeting the miniaturization requirement.)

1. The utility model provides a from pairing with each other board to board connector, includes public row terminal and female terminal of arranging, its characterized in that: one of the male busbar terminal and the female busbar terminal is an elastic contact element, and the other one of the male busbar terminal and the female busbar terminal is a rigid contact element matched with the elastic contact element.

2. The self-mating board-to-board connector of claim 1, wherein: the rigid contact piece and the elastic contact piece are respectively provided with a horizontal fixed end used for mounting and welding with a corresponding bonding pad on the printed board; a vertical cantilever with the width direction changing extends upwards from the head of the horizontal fixed end of the rigid contact element; the head of the horizontal fixed end of the elastic contact element extends upwards to form an elastic cantilever; when the connector is plugged, the contact part at the front end of the elastic cantilever of the elastic contact element is in elastic contact with the vertical cantilever of the rigid contact element.

3. The self-mating board-to-board connector of claim 2, wherein: the elastic contact piece and the rigid contact piece are manufactured and molded by the same die, and the manufactured and molded elastic contact piece and the rigid contact piece are connected through a material belt for realizing the simultaneous assembly of the elastic contact piece and the rigid contact piece.

4. The self-mating board-to-board connector of claim 2, wherein: the vertical cantilever of the rigid contact piece comprises a forced mounting section which is in forced mounting fit with the insulating shell, an adjusting section for adjusting the insertion force, the separation force and the characteristic impedance of the connector and a guiding section for guiding the insertion of the rigid contact piece and the elastic contact piece from bottom to top; the width of the rigid contact piece guiding section is larger than that of the adjusting section.

5. The self-mating board-to-board connector of claim 4, wherein: wherein the top of the elastic contact section of the elastic contact piece is inclined inwards to form a thick head part used for contacting with the rigid contact piece.

6. The self-mating board-to-board connector of claim 1, wherein: the periphery of the insulating shell of the connector is further sleeved with a shielding frame, and at least two elastic cantilevers which are in elastic contact with the rigid base body of the shielding frame of the adaptive connector are arranged on the periphery of the shielding frame.

7. The self-mating board-to-board connector of claim 7, wherein: the front end face of the shielding frame and the front end face of the insulating shell are in height difference, so that the inserting face of the shielding frame and the inserting face of the insulating shell are not on the same plane when the connector is inserted.

8. The self-mating board-to-board connector of claim 2, wherein: the tail part of the horizontal fixed end of the elastic contact piece extends upwards to form a clamping cantilever which can be embedded in a groove on the insulating shell in a forced mode to strengthen the fixation of the elastic contact piece and the insulating shell.

9. A self-mating contact set, comprising: the circuit board comprises an elastic contact element and a rigid contact element which are prepared by the same die, wherein the rigid contact element and the elastic contact element are respectively provided with a horizontal fixed end used for mounting and welding with a corresponding pad on a printed board and a cantilever formed by upwards extending the head part of the horizontal fixed end and used for inserting and contacting; a material belt for ensuring the two to be assembled simultaneously is also connected between the elastic contact piece and the rigid contact piece.

10. A self-mating insulating housing, comprising: a row of elastic contact element accommodating grooves and a row of rigid contact element accommodating grooves are formed in the insulating shell, and the lower ends of the rigid contact elements and the elastic contact elements are in forced fit with the insulating shell; the inner wall of the elastic contact containing groove is provided with three steps from top to bottom, wherein the upper two steps gradually reduce the gap between the elastic contact and the insulating shell so as to meet the elastic deformation of the elastic contact and the reinforcement of the insulating shell; the air gap between the elastic contact element forced mounting section and the rear wall of the insulating shell is enlarged by the lowest step, and the impedance of the elastic contact element is improved.

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a self-matching board-to-board connector.

Background

The self-mating board to board connector is a hermaphroditic connector, the front row being a male portion and the rear row being a female portion, which mates with another identical connector. Existing self-mating connectors mainly face two problems. The first is that the male end contact of row before the connector and the female end contact of back row are elastic contact, and the contact still need bend the welding pin end after the assembly targets in place, and the assembly process is complicated. Secondly, with the continuous development of communication technology, the requirement for data transmission rate is higher and higher, and in order to ensure the fixation of the insulating housing and the contact element, the gap between the rear wall of the insulating housing and the contact element needs to be reduced in the existing self-mating connector, so that the impedance of the contact element can be influenced by the design, and the transmission rate of the connector is further limited.

Disclosure of Invention

The present invention is directed to solving the above-mentioned problems and to providing a self-mating board-to-board connector of a novel structure that achieves reliable contact and quick assembly of contacts by providing both elastic contacts and rigid contacts.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the invention, the self-matching plate-to-plate connector comprises a male bar terminal and a female bar terminal, wherein one of the male bar terminal and the female bar terminal is an elastic contact element, and the other one is a rigid contact element matched with the elastic contact element.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

In the self-matching board-to-board connector, the rigid contact and the elastic contact are respectively provided with a horizontal fixed end for mounting and welding with a corresponding pad on a printed board; a vertical cantilever with the width direction changing extends upwards from the head of the horizontal fixed end of the rigid contact element; the head of the horizontal fixed end of the elastic contact element extends upwards to form an elastic cantilever; when the connector is plugged, the contact part at the front end of the elastic cantilever of the elastic contact element is in elastic contact with the vertical cantilever of the rigid contact element.

In the self-mating board-to-board connector, the elastic contact piece and the rigid contact piece are molded by the same mold, and the molded elastic contact piece and the molded rigid contact piece are connected by a material belt for realizing the simultaneous assembly of the elastic contact piece and the rigid contact piece.

The self-mating board-to-board connector described above, wherein the elastic cantilever of the elastic contact is used for the strong mounting section for mating with the insulating housing and the elastic contact section for mating contact with the rigid contact to realize reliable signal transmission.

In the self-mating board-to-board connector, the vertical cantilever of the rigid contact comprises, from bottom to top, a forced fitting section which is in forced fitting engagement with the insulating housing, an adjusting section for adjusting the insertion force, the separation force and the characteristic impedance of the connector, and a guiding section for guiding the rigid contact when the rigid contact is inserted into the insulating housing; the width of the rigid contact piece guiding section is larger than that of the adjusting section.

In the self-mating board-to-board connector, the top of the elastic contact section of the elastic contact piece is inclined inward to form a thick head part for contacting the rigid contact piece.

In the self-mating board-to-board connector, the inner side of the top of the rigid contact guiding section is in an inverted cone shape which is in guiding fit with the front end face of the head of the elastic contact.

In an embodiment of the invention, the tail portion of the horizontal fixed end of the elastic contact extends upwards to form a clamping cantilever which can be forcibly inserted into the groove on the insulating housing to strengthen the fixation with the insulating housing.

The purpose of the invention and the technical problem to be solved can also be realized by adopting the following technical scheme. The invention provides a self-matching pair contact unit, which comprises an elastic contact element and a rigid contact element, wherein the elastic contact element and the rigid contact element are prepared by the same mould, and the rigid contact element and the elastic contact element are respectively provided with a horizontal fixed end used for mounting and welding with a corresponding pad on a printed board and a cantilever formed by upwards extending the head part of the horizontal fixed end and used for inserting and contacting; a material belt for ensuring the two to be assembled simultaneously is also connected between the elastic contact piece and the rigid contact piece.

The purpose of the invention and the technical problem to be solved can be realized by adopting the following technical scheme. According to the self-pairing insulating shell provided by the invention, a row of elastic contact element accommodating grooves and a row of rigid contact element accommodating grooves are arranged in the insulating shell, and the lower ends of the rigid contact elements and the elastic contact elements are in forced fit with the insulating shell; the inner wall of the elastic contact containing groove is provided with three steps from top to bottom, wherein the upper two steps gradually reduce the gap between the elastic contact and the insulating shell so as to meet the elastic deformation of the elastic contact and the reinforcement of the insulating shell; the air gap between the elastic contact element forced mounting section and the rear wall of the insulating shell is enlarged by the lowest step, and the impedance of the elastic contact element is improved.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the self-matching board-to-board connector can achieve considerable technical progress and practicability, has wide industrial utilization value and at least has the following advantages: the connector integrates the elastic contact element and the rigid contact element, and the matching of the elastic contact element and the rigid contact element greatly reduces the assembling space and the inserting space of the existing elastic contact element and the elastic contact element, thereby reducing the volume of the connector and meeting the miniaturization requirement. And the contact of the contact piece is more reliable due to the matching of the elastic contact piece and the rigid contact piece. Finally, the elastic contact element and the rigid contact element can be prepared by the same set of die and can be assembled simultaneously, and the elastic contact element and the rigid contact element have the advantages of quick and simple assembly.

Drawings

FIG. 1 is a cross-sectional view of a self-mating board-to-board connector of the present invention;

FIG. 2 is a schematic diagram of a self-mating board-to-board connector of the present invention;

fig. 3 is a schematic diagram of a contact set structure prepared from the same template for a self-aligned board-to-board connector according to the present invention;

FIG. 4 is a schematic view of the mating of contacts with the self-mating board-to-board connector of the present invention mated;

FIG. 5 is a schematic view of the shield fit of the present invention with the self-mating board-to-board connector inserted;

fig. 6 is a side view of a self-mating board-to-board connector of the present invention.

[ description of main element symbols ]

1: elastic contact

2: rigid contact

3: elastic contact forced mounting section

4: elastic contact section

5: rigid contact forced mounting section

6: adjusting section

7: guide section

8: clamping cantilever

9: fixed section step

10: rear wall adjusting section of insulating shell

11: insulating shell

12 material belt

13: shielding frame

14: elastic cantilever

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the self-aligned board-to-board connector according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1-6, which are schematic diagrams illustrating structures of parts of a self-mating board-to-board connector according to the present invention, the connector includes a male row terminal and a female row terminal, wherein one of the male row terminal and the female row terminal is an elastic contact 1, and the other is a rigid contact 2 adapted thereto. In the embodiment of the invention, the busbar terminal is an elastic contact element 1, the male busbar terminal is a rigid contact element 2, when the connector is plugged, the male busbar rigid contact element 2 of one connector is contacted with the busbar elastic contact element 1 of the other connector, and the busbar elastic contact element 1 of one connector is contacted with the male busbar rigid contact element 2 of the other connector.

The elastic contact element 1 is of a cantilever beam structure, and reliable signal transmission is realized by elastic deformation. The male busbar rigid contact element 2 and the female busbar elastic contact element 1 can share one set of die, so that the cost is saved, the assembly process of the contact elements is simple and convenient to operate, the production process of the product is convenient, the efficiency is high, and the high yield is ensured.

In the embodiment of the invention, the rigid contact 2 and the elastic contact 1 are respectively provided with a horizontal fixing end used for mounting and welding with a corresponding pad on a printed board. The head of the horizontal fixed end of the rigid contact element 2 extends upwards to form a rigid vertical cantilever with the width direction changing. The vertical cantilever comprises three sections from bottom to top, wherein the first section is a rigid contact element forced-assembling section 5 which is in forced-assembling fit with the insulating shell 11, and the forced-assembling section is in interference fit with the insulating shell 11 through one or more protruding points on the periphery of the forced-assembling section. The length of the rigid contact piece forced installation section 5 is changed along with the height of the insulating shell, and the forced installation section 5 is integrally embedded into the insulating shell 11. The second section is an adjusting section 6 for adjusting the insertion force, the separation force and the characteristic impedance of the connector, the third section is a guiding section 7 for inserting and guiding the elastic contact piece, preferably, the top of the guiding section 7 is in a single-side inverted cone shape, and guiding when the elastic contact piece is contacted can be realized. The guide section 7 can be adjusted in width according to the actual transmission rate of the connector. In the embodiment of the invention, the width of the adjusting section 6 is smaller than that of the guiding section 7, when the contact element is inserted in place, the elastic contact element is elastically contacted with the adjusting section, and the increased width from the adjusting section to the guiding section can provide larger separating force for separating the contact element, so that the contact of the contact element is more stable, and the connector is more suitable for a strong vibration environment.

The head of the horizontal fixed end of the elastic contact element 1 extends upwards to form an elastic cantilever. The elastic cantilever comprises two sections, wherein the first section is an elastic contact element forced installation section 3 matched with the insulating shell 11, and one or more protruding points are designed on the inner side surface of the elastic contact element forced installation section 3 to realize interference assembly with the insulating shell 11. In order to meet the space requirement of elastic deformation of the elastic contact piece during insertion, a space for the elastic contact piece to deform backwards is arranged between the outer side surface of the elastic contact piece forced mounting section 3 and the insulating shell 11. The length of the elastic contact element forced installation section 3 is changed along with the height of the insulating shell 11, and the forced installation section 3 is integrally embedded into the insulating shell.

When the height of the insulating bottom base body is small, the tail part of the horizontal fixed end of the elastic contact element 1 extends upwards to form a section of clamping cantilever 8, and the clamping cantilever 8 is embedded in a groove in the insulating shell 11 by force to strengthen the fixation with the insulating shell 11. Preferably, the clamping cantilever 8 is provided with a protruding point at its outer periphery for interference fit with the insulating housing 11 to enhance its fixation with the insulating housing, but is not limited thereto. And the convex point interference magnitude of the elastic contact element forced mounting section 3 is greater than that of the clamping cantilever 8, so that the elastic contact element 1 is prevented from being stressed unevenly to cause inconsistent assembly positions of the contact elements.

The second section of the elastic cantilever is an elastic contact section 4 which is used for being in fit contact with the rigid contact piece to realize reliable signal transmission. The top of the elastic contact section is inclined inwards to form a thick head part for contacting with the rigid contact piece. In an embodiment of the invention, the front end of the head of the elastic contact section is provided with a bevel surface for guiding and matching with the conical surface of the rigid contact piece guide section in a single-sided inverted conical shape. The invention realizes smooth insertion by the guide fit of the head inclined plane of the elastic contact element and the top conical surface of the rigid contact element, so that when the connector is inserted in place, the rigid contact element is always pressed by the extrusion force of the elastic contact element to ensure that the rigid contact element and the elastic contact element are stably and reliably contacted.

The inner wall of the containing groove of the rear row terminal (elastic contact element 1) in the insulating shell 11 is provided with three steps from top to bottom, so that the clearance between the elastic contact element and the insulating shell is gradually reduced, the first step and the second step are fixed section steps 9, the volume of the insulating shell is increased, the rear row contact element is fixed, and the insulating shell is prevented from being punctured by the rear row contact element. Meanwhile, the back row of contacts can be elastically deformed in the opposite insertion process, and a certain elastic movement space needs to be reserved for the contacts. Therefore, the clearance between the step 9 of the fixed section and the contact in the back row needs to be considered comprehensively for the fixing action of the contact and the deformation of the contact. The third step is an adjustment section step 10, which is used for increasing the air gap between the rear row contact and the rear wall of the insulating shell, and improving the impedance of the rear row terminal, so that the impedance continuity of the terminal is better, and the reflection of signal transmission is reduced.

One side of the upper end of a front row terminal (rigid contact element) accommodating groove in an insulating shell 11 is open and is used for being matched and inserted with the outer side wall body of a rear row terminal accommodating groove, and the lower end of the front row terminal (rigid contact element) accommodating groove is of a hole-shaped structure which is used for being in interference fit with a rigid contact element strong mounting section.

In the embodiment of the invention, the rigid contact element 2 and the elastic contact element 1 use a set of die, so that the manufacturing cost of the die can be reduced, and the utilization rate of the die is improved. The elastic contact element 1 and the rigid contact element 2 which are manufactured by the same die are connected through the material belt 12, so that the two contact elements can be assembled at the same time during assembly, the process is simple, the operation is convenient, the coplanarity of the connector can be ensured, and the subsequent welding process of the product is convenient.

The elastic contact 1 and the rigid contact 2 are assembled from bottom to top during assembly, namely, the cantilever of the elastic contact is assembled from the tail part of the insulating shell to top. Because the width of the strong installation section of the rigid contact piece is larger than the widths of the other two sections, the rear two sections of the cantilever of the rigid contact piece can be easily assembled through the hole for assembling the first section in the insulating shell. And the head part of the elastic contact part 1 with the top part inclined inwards can also pass through a hole which is used for assembling the elastic contact part forced installation section 3 in the insulating shell and has a distance with the rear side surface of the forced installation section 3 to realize the assembly of the elastic contact part.

The periphery of the insulating shell 11 is further coated with a shielding frame 13, at least two elastic cantilevers 14 are arranged on the outer side of the shielding frame 13, and when the connector is inserted, the elastic cantilevers 14 are in elastic contact with the outer wall of the shielding frame of the adaptive connector. The arrangement of the elastic cantilever 14 increases the insertion force when the connector is inserted and the separation force when the connector is separated, and realizes the reliable transmission of the inserted connector. Preferably, the elastic cantilevers 14 are symmetrically arranged two by two outside the shielding frame, but not limited thereto. In the embodiment of the present invention, the front end surface of the shielding frame 13 and the front end surface of the insulating housing have a height difference, so that when the connector is plugged, the plugging surface of the shielding frame and the plugging surface of the insulating housing are not on the same plane, thereby enhancing the shielding effect.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.