Round electric connector

Abstract

The utility model relates to the field of electric connectors, and provides a circular electric connector. Comprising a plug, a socket and a locking piece, the plug comprises a head shell, a head insulation assembly and a jack assembly, the jack assembly comprises a spring sleeve, a contact head, a hole-type front sleeve and a hole-type rear sleeve, a spring is extruded between the inner step surface of the hole-type front sleeve and the outer step surface of the spring sleeve, a pin assembly comprises a spring pin, a pin sleeve and a pin plate, the pin sleeve sleeves the rear section of the spring pin, and the pin plate sleeves the rear section of the spring pin. The hole-type front sleeve and the hole-type rear sleeve are installed in the insulation assembly, the spring is utilized to enable the reed pipe of the pin assembly to axially move in the hole-type front sleeve, the spring provides a certain pre-compression force, so that the pressure between the pin assembly and the contact piece of the jack assembly is maintained to be released, and when vibration and impact occur, the pin assembly and the jack assembly are separated from each other. Or after multiple plugging, good contact can be ensured, and signal loss is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electrical connectors, and particularly relates to a circular electrical connector. Background Art

[0002] Circular electrical connectors are widely used in the fields of aviation, aerospace, and military industry for signal transmission, and have the advantages of small size, light weight, and high contact density. During application, they are required to have good sealing performance, meet strict vibration requirements, and contact stability requirements.

[0003] Multiple signal cables are respectively connected to the plug and socket of the connector, and electrical signal transmission is formed through the contact of the conductive parts between the plug and the socket. The traditional conductive method between conductive parts is contact conduction. In the case of high-intensity impact or vibration, or after multiple pluggings and unplugging, the contact between the conductive parts is likely to become loose or detached, resulting in signal transmission failure or signal loss, seriously affecting the reliability of the connector. Summary of the Invention

[0004] In order to ensure the stable connection of the electrical connector and the stable signal transmission, the utility model provides a circular electrical connector.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A circular electrical connector includes a plug, a socket and a locking member. The plug includes a head housing, a head insulation assembly and a jack assembly. An installation hole for installing the jack assembly and a cable hole are provided in the head insulation assembly. The socket includes a socket housing, a socket insulator and a pin assembly. An installation hole for installing the pin assembly and a cable hole are provided in the socket insulator. The pin assembly and the jack assembly are respectively installed in the corresponding installation holes, and each cable hole communicates with the corresponding installation hole. A signal cable passes through the corresponding cable hole and is connected to the corresponding pin assembly and jack assembly. The jack assembly includes a spring sleeve, a contact head, a hole-type front sleeve and a hole-type rear sleeve. The contact head is inserted and installed in the installation cavity at the front end of the spring sleeve. The hole-type front sleeve is sleeved on the outer side of the front section of the spring sleeve. The hole-type front sleeve is respectively provided with an inner step surface and an outer step surface. The two sides of the outer step surface of the hole-type front sleeve are respectively in limit fit with the step surface of the head insulation assembly and the positioning claw installed in the head insulation assembly. A spring is squeezed between the inner step surface of the hole-type front sleeve and the outer step surface of the spring sleeve. The hole-type rear sleeve is sleeved on the rear section of the spring sleeve. The corresponding end faces of the hole-type front sleeve and the hole-type rear sleeve are attached. A limit ring is installed on the outer cylindrical surface of the hole-type rear sleeve. The limit ring is in limit fit with the inner bottom surface of the installation hole. The pin assembly includes a reed pin, a pin sleeve and a pin board. The pin sleeve is sleeved on the rear section of the reed pin. The pin sleeve is provided with an outer step surface. The two sides of the outer step surface of the pin sleeve are respectively in limit fit with the step surface of the socket insulator and the positioning claw installed in the socket insulator. The reed pin is fixedly installed in the inner hole of the pin sleeve and is limited by the step surface in the inner hole. A limit ring is installed at the tail end of the pin sleeve. The limit ring is in limit with the inner bottom surface of the corresponding installation hole. The pin board is installed on the end face of the socket insulator facing the plug. A plurality of pin holes are provided on the pin board. The contact section of the reed pin passes through the pin holes on the pin board. When the plug and the socket are connected and matched, the reed pin is in extrusion contact fit with the contact head on the spring sleeve.

[0007] Further, three circumferentially evenly distributed pins are provided on the outer wall of the head housing near the socket end, and a plurality of slots parallel to the axis are provided on the inner wall of the head housing near the socket end; guiding ridges corresponding to the slots are provided on the outer wall of the socket housing near the plug end.

[0008] Further, the locking member is a snap cap. The snap cap is sleeved on the outer side of the socket housing. Three circumferentially evenly distributed screw grooves are provided on the inner wall of the snap cap. One end of the screw groove opens from the end face of the snap cap, and a through pin hole is provided at the other end of the spiral groove. The pin hole is matched with the pin.

[0009] Further, the positioning claw includes a thin-walled sleeve-shaped body and a circle of claw parts bent inward from the sleeve-shaped body. One end face of the positioning claw is in limit fit with the inner step surface of the corresponding insulator, and the claw parts of the positioning claw are in limit with the outer step surface of the corresponding pin sleeve or hole-type front sleeve.

[0010] Further, a tapered guiding hole recessed towards the inside is provided at one end of the mounting hole of the head insulation assembly close to the contact head, and a tapered guiding portion corresponding to the tapered guiding hole is provided outside the needle hole on the needle plate, and the guiding hole and the guiding portion are in cooperation with each other.

[0011] Further, the head insulation assembly and the seat insulator are an integral insulation part or are composed of a cable insulator, a cover plate insulator, and a component insulator connected in sequence.

[0012] Still further, the connection surfaces of the cable insulator, the cover plate insulator, and the component insulator are limited in cooperation by a connection structure of multiple groups of protrusions and grooves.

[0013] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] The pin assembly is installed in the insulation assembly through the hole-type front sleeve and the hole-type rear sleeve, and the spring tube of the pin assembly can axially move in the hole-type front sleeve by using the spring. The spring provides a certain pre-pressure, so that the contact pieces between the pin assembly and the jack assembly keep releasing pressure, and good contact can be ensured during vibration and impact, or after multiple pluggings and unpluggings, avoiding signal loss.

[0015] The head housing and the seat housing of the connector can achieve precise positioning during connection and ensure the connection stability through the connection structure of the guiding rib and the card slot, and the cooperation of the pin and the pin hole on the cap. Description of the Drawings

[0016] Figure 1 It is a cross-sectional view of the plug.

[0017] Figure 2 It is a cross-sectional view of the socket.

[0018] Figure 3 It is a side view of the plug.

[0019] Figure 4 It is a side view of the socket.

[0020] In the figure: head housing 1, head insulation assembly 2, mounting hole 3, cable hole 4, spring sleeve 5, contact head 6, hole-type front sleeve 7, hole-type rear sleeve 8, positioning claw 9, limiting ring 10, spring 11, seat housing 12, seat insulator 13, reed pin 14, needle sleeve 15, needle plate 16, limiting ring 17, pin 18, slot 19, guiding rib 20, cap 21, thread groove 22, pin hole 23, cable insulator 24, cover plate insulator 25, component insulator 26. Detailed Embodiment

[0021] The following further details the specific embodiments of the present utility model in conjunction with the drawings:

[0022] A circular electrical connector is composed of three parts: a plug, a socket, and a locking member.

[0023] As Figure 1 shown, the plug is composed of a head housing 1, a head insulation assembly 2, and a jack assembly. The head insulation assembly 2 is fixedly installed inside the head housing 1. An installation hole 3 and a cable hole 4 are provided inside the head insulation assembly 2. The jack assembly is installed in the installation hole 3. One end of the installation hole 3 corresponds to the socket, and the other end is connected to the cable hole 4. The signal cable passes through the cable hole 4 and is connected to the jack assembly.

[0024] The jack assembly is composed of a spring sleeve 5, a contact head 6, a hole-type front sleeve 7, and a hole-type rear sleeve 8. The contact head 6 is inserted and installed in the installation cavity at the front end of the spring sleeve 5. A gasket is provided between the contact head 6 and the bottom of the installation cavity. The hole-type front sleeve 7 is sleeved on the outer side of the front section of the spring sleeve 5. The hole-type front sleeve 7 is respectively provided with an inner step surface and an outer step surface. The two sides of the outer step surface of the hole-type front sleeve 7 are respectively in limit fit with the inner step surface of the head insulation assembly 2 and the positioning claw 9 installed inside the head insulation assembly 2 to fix the hole-type front sleeve 7. The hole-type rear sleeve 8 is sleeved on the rear section of the spring sleeve 5. The hole-type rear sleeve 8 is in contact with the corresponding end surface of the hole-type front sleeve 7. A limit ring 10 is installed on the outer circular surface of the hole-type rear sleeve 8. The limit ring 10 is in limit fit with the inner bottom surface of the installation hole 3. A spring 11 is sleeved on the spring sleeve 5. The spring 11 is squeezed between the inner step surface of the hole-type front sleeve 7 and the outer step surface of the spring sleeve 5. When the contact head 6 is connected and conducted with the connector inside the socket, the spring 11 is squeezed and provides a resilience force, making the contact of the contact head more stable and reliable.

[0025] As Figure 2 shown, the socket is composed of a socket housing 12, a socket insulator 13, and a pin assembly. The socket insulator 13 is fixedly installed inside the socket housing 12. An installation hole and a cable hole are provided inside the socket insulator 13. The cable hole is connected to the corresponding installation hole. The pin assembly is installed in the installation hole. The signal cable passes through the cable hole and is connected to the pin assembly.

[0026] The pin assembly consists of a spring pin 14, a pin sleeve 15, and a pin board 16. The pin sleeve 15 is sleeved on the rear section of the spring pin 14. The pin sleeve 15 is provided with an outer stepped surface. The two sides of the outer stepped surface of the pin sleeve 15 are respectively in limit fit with the inner stepped surface of the socket insulator 13 and the positioning claws installed in the socket insulator 13. The spring pin 14 is fixedly installed in the inner hole of the pin sleeve 15 and is limited by the stepped surface in the inner hole. A limit ring 17 is installed at the tail end of the pin sleeve 15, and the limit ring 17 is in limit with the inner bottom surface of the corresponding installation hole. The pin board 16 is installed on the end face of the socket insulator 13 facing the plug. The pin board is provided with a plurality of pin holes. The contact section of the spring pin 14 passes through the pin holes on the pin board 16, and the contact of the spring pin 14 is located inside the socket housing 12. At one end of the installation hole 3 of the head insulation assembly 2 close to the contact head 6, there is an inward concave conical guiding hole. On the outside of the pin holes on the pin board 16, there is a conical guiding portion corresponding to the conical guiding hole. The guiding hole and the guiding portion cooperate to be able to guide during the insertion process and form a seal on the contact surface.

[0027] When the plug and the socket are connected and matched, the spring pin 14 is in contact and cooperation with the contact head 6 on the spring sleeve 5. The spring pin 14 axially presses the contact head 6, and the spring 11 on the spring sleeve 5 provides a positive elastic force to maintain the stability of the contact.

[0028] In order to ensure the stability after the connection of the plug and the socket, three circumferentially evenly distributed retaining pins 18 are provided on the outer wall of the head housing 1 close to the socket end. On the inner wall of the head housing 1 close to the socket end, there are more than three slots 19 parallel to the axis. One end of the slot 19 is open, and the interval angles between adjacent slots are different. On the outer wall of the socket housing 12 close to the plug end, there are guiding ridges 20 corresponding to the slots. When the plug and the socket are matched, the end of the socket housing 12 is inserted into the head housing 1, and the guiding ridges 20 are in corresponding fit with the slots 19 to ensure the correct insertion position, thereby ensuring the correct cooperation between the corresponding spring pins 14 and the contact heads 6.

[0029] In this technical solution, the locking member is a retaining cap 21. The retaining cap 21 is rotatably installed on the outside of the socket housing 12 and can axially move through limit settings. On the inner wall of the retaining cap 21, there are three circumferentially evenly distributed thread grooves 22. One end of the thread groove 22 opens from the end face of the retaining cap facing the plug. The other end of the spiral groove 22 is provided with a pin hole 23 penetrating the retaining cap. After the plug and the socket are matched in place, the openings of the three thread grooves 22 of the retaining cap 21 are aligned with the positions of the three retaining pins 18 of the head housing. Rotate the retaining cap 21. Under the guiding action of the thread grooves 22, the retaining cap 21 rotates and axially moves on the socket housing 12 until the pin hole 23 at the end of the thread groove 22 cooperates with the retaining pin 18, and the retaining cap 21 is locked, and at the same time, the plug and the socket are locked.

[0030] The positioning claw 9 in this technical solution is composed of a thin-walled sleeve-shaped body and a circle of claw parts bent inward from the sleeve-shaped body. One end face of the positioning claw 9 is in limit fit with the inner stepped surface of the corresponding insulator, and the claw parts of the positioning claw are in limit with the outer stepped surface of the corresponding needle sleeve 15 or the hole-type front sleeve 7.

[0031] The head insulation assembly and the base insulator in this technical solution are integral insulation parts or are composed of a cable insulator 24, a cover plate insulator 25, and a component insulator 26 connected in sequence. The mounting hole 3 is located in the component insulator 26, and the cable hole 4 is located in the cable insulator 24. The connection surfaces between the cable insulator 24, the cover plate insulator 25, and the component insulator 26 are cooperatively limited by a connection structure of multiple groups of protrusions and grooves.

Claims

1. A circular electrical connector, comprising a plug, a socket and a locking member. The plug includes a head housing, a head insulation assembly and a jack assembly. An installation hole for installing the jack assembly and a cable hole are provided in the head insulation assembly. The socket includes a socket housing, a socket insulator and a pin assembly. An installation hole for installing the pin assembly and a cable hole are provided in the socket insulator. The pin assembly and the jack assembly are respectively installed in the corresponding installation holes, and each cable hole communicates with the corresponding installation hole. A signal cable passes through the corresponding cable hole and is connected to the corresponding pin assembly and jack assembly; characterized in that, The jack assembly includes a spring sleeve, a contact head, a hole-type front sleeve and a hole-type rear sleeve. The contact head is inserted and installed in the installation cavity at the front end of the spring sleeve. The hole-type front sleeve is sleeved on the outer side of the front section of the spring sleeve. The hole-type front sleeve is respectively provided with an inner step surface and an outer step surface. The two sides of the outer step surface of the hole-type front sleeve are respectively in limit fit with the step surface of the head insulation assembly and the positioning claws installed in the head insulation assembly. A spring is squeezed between the inner step surface of the hole-type front sleeve and the outer step surface of the spring sleeve. The hole-type rear sleeve is sleeved on the rear section of the spring sleeve. The corresponding end faces of the hole-type front sleeve and the hole-type rear sleeve are in contact. A limit ring is installed on the outer circular surface of the hole-type rear sleeve. The limit ring is in limit fit with the inner bottom surface of the installation hole. The pin assembly includes a spring pin, a pin sleeve and a pin board. The pin sleeve is sleeved on the rear section of the spring pin. The pin sleeve is provided with an outer step surface. The two sides of the outer step surface of the pin sleeve are respectively in limit fit with the step surface of the socket insulator and the positioning claws installed in the socket insulator. The spring pin is fixedly installed in the inner hole of the pin sleeve and is limited by the step surface in the inner hole. A limit ring is installed at the tail end of the pin sleeve. The limit ring is in limit with the inner bottom surface of the corresponding installation hole. The pin board is installed on the end face of the socket insulator facing the plug. A plurality of pin holes are provided on the pin board. The contact section of the spring pin passes through the pin holes on the pin board. When the plug and the socket are connected and matched, the spring pin is in pressing contact and cooperation with the contact head on the spring sleeve.

2. The circular electrical connector according to claim 1, characterized in that, Three circumferentially evenly distributed pins are provided on the outer wall of the head shell near the socket end. A plurality of slots parallel to the axis are provided on the inner wall of the head shell near the socket end. Guide ridges corresponding to the slots are provided on the outer wall of the socket shell near the plug end.

3. The circular electrical connector according to claim 2, characterized in that, The locking member is a snap cap. The snap cap is sleeved on the outer side of the socket shell. Three circumferentially evenly distributed screw grooves are provided on the inner wall of the snap cap. One end of the screw groove opens from the end face of the snap cap. The other end of the spiral groove is provided with a through pin hole. The pin hole is in fit with the pin.

4. A circular electrical connector according to claim 1, characterized in that, The positioning claw includes a thin-walled sleeve-shaped body and a circle of claw parts bent inward from the sleeve-shaped body. One side end face of the positioning claw is in limit fit with the inner step surface of the corresponding insulator. The claw parts of the positioning claw are in limit with the outer step surface of the corresponding pin sleeve or hole-type front sleeve.

5. A circular electrical connector according to claim 1, characterized in that, A concave conical guide hole is provided at one end of the installation hole of the head insulation assembly close to the contact head. A conical guide part corresponding to the conical guide hole is provided outside the pin hole on the pin board. The guide hole and the guide part are in cooperation.

6. A circular electrical connector according to claim 1, characterized in that, The head insulation assembly and the socket insulator are an integral insulation part or are composed of a cable insulator, a cover plate insulator and a component insulator connected in sequence.

7. A circular electrical connector according to claim 6, characterized in that, The connection surfaces of the cable insulator, the cover plate insulator and the component insulator are in limit fit through a connection structure of multiple groups of protrusions and grooves.

Images