CN106684603A - A compact receptacle connector with torsion spring contacts - Google Patents

Abstract

The invention discloses a compact jack connector with a rotary spring contact element, which comprises a jack hole sleeve, a rotary spring contact element and a metal contact pin, wherein the rotary spring contact element is embedded and clamped in an insertion hole of the jack hole sleeve; the rotary spring contact piece comprises a front end fixing circular ring and a rear end fixing circular ring, a plurality of grid bars are continuously arranged between the front end fixing circular ring and the rear end fixing circular ring of the rotary spring contact piece, each grid bar is twisted into a spiral shape around a central axis by the cylindrical rotary spring contact piece, two adjacent grid bars form a grid bar group, the extending starting points of the two grid bars of the same grid bar group are consistent, and the extending starting points of the grid bars of the two adjacent grid bar groups are arranged in a staggered mode. Through the structural design, the plug jack has the advantages that the contact area is high, the axial contact range is longer, the plug jack is compact and reliable, the plug jacks with different pore sizes can be manufactured in a larger application range, higher current and signals can be conducted, the plugging force and the holding force are stable, the production process is simple, the cost is low, and the plug jack is beneficial to batch production.

Description

A compact receptacle connector with torsion spring contacts

technical field

The invention relates to the technical field of receptacle connectors, in particular to a compact receptacle connector with a rotary spring contact.

Background technique

The jacks of the existing electrical connector contacts mainly use spring or reed structures, and the following two structures are typical: the first type: a crown spring socket with a reed waist; the second type: a stamped spring The piece is twisted, and the two ends are press-fitted into the jack.

For the above-mentioned first type of crown spring socket, the elastic metal sheet is punched and divided into a fence shape composed of several metal strips connected at both ends and perpendicular to the end face, and then coiled and the middle part is waisted so that each A metal strip bends in the middle and shrinks toward the axis, forming a structure with two large ends and a small middle. The crown spring socket of this structure is in contact with the surface of the contact pin at the waist of the elastic metal strip. Because of the structural limitation, it cannot contact the contact pin evenly and stably, resulting in a large insertion force, a small contact area, and poor contact performance. low-level disadvantages.

For the above-mentioned second type of socket structure, although it has high contact performance, its socket connection method has high contact resistance and poor tensile strength, and the front and rear sockets are easily separated from the pressure point by tension, resulting in connection failures and accidents; structure Complicated and combined parts, the volume cannot be further reduced, which is not conducive to the development of miniaturization and densification; the processing technology is complicated and the precision requirements are high, resulting in low product qualification rate and high cost; the shrapnel cannot be very thick in a limited space, It makes it difficult for each shrapnel to withstand a large current impact, and the phenomenon of "broken wire" during use cannot be solved.

Contents of the invention

The object of the present invention is to provide a compact receptacle connector with a revolving spring contact against the deficiencies of the prior art. The compact receptacle connector with a revolving spring contact not only has a high contact area when in use, The axial contact range is longer, and it is compact and reliable. Jacks with different aperture sizes can be made in a larger application range, and can carry higher current and signals. The insertion force and retention force are stable. The production process is simple and the cost is low. Inexpensive, conducive to mass production.

In order to achieve the above object, the present invention is achieved through the following technical solutions.

A compact receptacle connector with a revolving spring contact, including a receptacle socket, a revolving spring contact, and a metal pin matching the receptacle socket. The pin is inserted into the insertion hole of the side opening, and the swivel spring contact is embedded in the insertion hole of the socket hole sleeve;

The rotary spring contact piece is rolled into a cylindrical shape by a rectangular metal sheet. The rotary spring contact piece includes a front-end holding ring and a rear-end holding ring respectively in the shape of a ring. The front-end holding ring is located at the front end of the rear-end holding ring. side and the front-end holding ring and the rear-end holding ring are coaxially arranged at intervals, and the torsion spring contact piece is connected with grid bars that are evenly spaced between the front-end holding ring and the rear-end holding ring. The front-end fixing ring, The fixed ring at the rear end and each grid bar are integrated. Each grid bar is twisted into a spiral shape by a cylindrical torsion spring contact piece around the central axis. Two adjacent grid bars form a grid bar group. The same grid bar group The extension starting points of the two grid bars are the same, and the grid bar extension starting points of two adjacent grid bar groups are staggered. point, the contact point of each bar whose extension starting point is on the same side is on the same side;

The metal pin is embedded in the center hole of the rotary spring contact piece.

Wherein, the socket hole sleeve is equipped with an anti-off retaining ring, and the anti-off retaining ring includes an inner fixed ring and an outer fixed ring respectively in the shape of a ring, and the inner fixed ring and the outer fixed ring are coaxially arranged at intervals and fixed on the inner side. The ring is located at the inner end side of the outer fixed ring, and a stop ring connecting part is connected between the front end edge of the inner fixed ring and the front end edge of the outer fixed ring. The connecting part of the retaining ring is jointly surrounded by a retaining ring slot which is open to the rear. The front end of the rotating spring contact piece holds the inner side of the ring, the outer peripheral surface of the socket hole sleeve is provided with a ring-shaped hole sleeve limit groove, and the rear end edge of the outer fixed ring is provided with radially inwardly protruding The fixed ring limiting flange is embedded in the hole sleeve limiting groove.

Wherein, the torsion spring contact piece is formed by crimping a rectangular copper sheet.

The beneficial effects of the present invention are: a compact socket connector with a rotary spring contact according to the present invention, which includes a socket hole sleeve, a rotary spring contact, and a metal pin, and the rotary spring contact is embedded in the In the insertion hole of the jack socket; the swivel spring contact is rolled into a cylindrical shape by a rectangular metal sheet. The swivel spring contact includes a front holding ring and a rear holding ring. A number of grid bars are connected between the holding rings. Each grid bar is twisted into a spiral shape by a cylindrical torsion spring contact piece around the central axis. Two adjacent grid bars form a grid bar group. Two grid bar groups of the same grid bar group The extension starting points of each grid bar are consistent, the grid bar extension starting points of two adjacent grid bar groups are staggered, and the front end side and the rear end side of the center of the central axis of the rotary spring contact piece are respectively formed with ring-shaped contact points distributed at intervals. The contact points of the grid bars whose extension starting points are located on the same side are located on the same side; the metal pin is embedded in the central hole of the rotary spring contact piece. Through the above-mentioned structural design, the present invention not only has a high contact area, but also has a longer axial contact range, and is compact and reliable. It can make jacks with different apertures in a larger application range, and can carry higher currents. And signal, plugging force and holding force are stable, the production process is simple, the cost is low, and it is beneficial to mass production.

Description of drawings

The present invention will be further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention.

Fig. 4 is a schematic structural view of the rotary spring contact of the present invention.

Fig. 5 is a schematic structural view of a metal plate used to prepare a torsion spring contact.

In Figures 1 to 5 include:

1——Jack hole sleeve 11——Insertion hole

12——Sleeve limit groove 2——Revolving spring contact piece

21——Front end holding ring 22——Back end holding ring

23——bar 3——metal pin

4——Anti-off retaining ring 41——Inner fixed ring

42——outer fixed ring 43——connecting part of retaining ring

44——retaining ring slot 45——limiting flange of the fixed ring.

detailed description

The present invention will be described below in conjunction with specific embodiments.

As shown in Figures 1 to 4, a compact receptacle connector with a revolving spring contact includes a receptacle sleeve 1, a revolving spring contact 2, and a metal pin that matches the receptacle sleeve 1 3. The core of the socket socket 1 is provided with an insertion hole 11 that opens toward the insertion side of the metal pin 3 , and the torsion spring contact 2 is embedded in the insertion hole 11 of the socket socket 1 .

Further, the rotary spring contact 2 is rolled into a cylindrical shape by a rectangular metal sheet, and the rotary spring contact 2 includes a front holding ring 21, a rear holding ring 22, and a front holding ring 21 respectively in the shape of a ring. Located on the front side of the rear holding ring 22, the front holding ring 21 and the rear holding ring 22 are coaxially arranged at intervals, and the rotating spring contact 2 is connected between the front holding ring 21 and the rear holding ring 22 There are grid bars 23 distributed at even intervals, the front fixed ring, the rear fixed ring and each grid bar 23 are integrally structured, and each grid bar 23 is twisted into a spiral shape by a cylindrical torsion spring contact piece 2 around the central axis , two adjacent grid bars form a grid bar group, the extension starting points of the two grid bars 23 of the same grid bar group are consistent, the extension starting points of the grid bars 23 of two adjacent grid bar groups are arranged in a staggered manner, and the rotary spring contacts 2 On the front end side and the rear end side of the center of the central axis, contact points are formed at intervals in a ring shape, and the contact points of the grid bars 23 whose extension starting points are on the same side are located on the same side.

In addition, the metal pin 3 is inserted into the central hole of the rotary spring contact 2 .

To further explain, the rotary spring contact 2 of the present invention can be made of copper sheet, that is, the rotary spring contact 2 of the present invention is formed by curling a rectangular copper sheet.

It should be further pointed out that, as shown in Figure 5, the torsion spring contact piece 2 of the present invention can be prepared by the following method, specifically: first, after the metal sheet is formed by stamping and blanking, the overall shape is rectangular, including the holding rings at both ends and A plurality of grid bars 23 connected to both ends are uniformly staggered, and then the rectangular metal sheet is rolled into a cylinder along the direction parallel to the corresponding grid bar 23 of the holding ring. Since the metal sheet is rectangular, the diameter of the cylinder is different. Consistent, and then one end of the cylinder is twisted into a spiral shape relative to the other end around the central axis. At this time, the cylinder is in a spiral shape as a whole, and due to the limitation of the length of the grid bars 23 connected to both ends, the diameter of the cylinder is generally determined by the two ends. It decreases toward the midpoint of the axis, and finally the spiral cylinder is fixed and shaped by heat treatment so that it does not spring back. The rotary spring contact 2 prepared by the above method can ensure that it has an excellent structure, stable and reliable contact retention force and good electrical conductivity, and the rotary spring contact 2 will not recover during the process of inserting and pulling out the metal pin 3 Deformation, simple and practical structure.

As shown in Figure 4, for the rotary spring contact 2, the grid bar 23 is not on the same plane as the cylindrical central axis, and is obliquely connected to the front end holding ring 21 of the cylindrical body, the rear end holding ring 22, and the grid bar 23 Evenly staggered distribution around the central axis of the cylindrical body; the overall diameter distribution of the rotary spring contact piece 2 decreases symmetrically from the holding rings at both ends to the center. There are through holes, so strictly speaking, its axial section is not a continuous line, but several line segments.

In the process of inserting the metal pin 3 into the insertion hole 11 of the jack socket 1, the metal insert contacts with the contact points on both sides of the center axis of the torsion spring contact 2, and when the metal pin 3 is inserted Afterwards, each grid bar 23 will be deformed, so that the point contact is transformed into a surface contact. For the socket connector, the axial contact range between the rotary spring contact 2 and the metal pin 3 is longer, the contact area is larger, the insertion force and holding force are stable, the mechanical life is long, and it is not easy to shake in the vibration environment , Separation and other poor contact phenomena.

Based on the above situation, it can be seen that through the above structural design, the present invention not only has a high contact area, but also has a longer axial contact range, and is compact and reliable, and can be made in a larger application range. Higher current and signal are carried, the insertion force and retention force are stable, the production process is simple, the cost is low, and it is conducive to mass production.

As a preferred embodiment, as shown in Figure 3, in order to prevent the conversion contact from protruding from the insertion hole 11 of the socket socket 1, the present invention adopts the following structural design, specifically: the socket socket 1 is equipped with The anti-off stop ring 4, the anti-off stop ring 4 includes an inner fixed ring 41 and an outer fixed ring 42 respectively in the shape of a ring, and the inner fixed ring 41 and the outer fixed ring 42 are coaxially arranged at intervals and the inner fixed ring 41 is fixed on the outer side. The inner end side of ring 42, between the front end edge portion of inner fixed ring 41 and the front end edge portion of outer fixed ring 42, be connected with retaining ring connecting portion 43, anti-off retaining ring 4 is formed with inner fixed ring 41, outer fixed The ring 42 and the retaining ring connecting part 43 jointly enclose the retaining ring slot 44 that is open to the rear. The inner fixed ring 41 of the stop ring 4 is located at the inner side of the front end holding ring 21 of the torsion spring contact piece 2, and the outer peripheral surface of the jack hole sleeve 1 is provided with a ring-shaped hole sleeve limiting groove 12, and the outer fixed ring 42 The rear edge of the rear end is provided with a radially inwardly protruding fixed ring limiting flange 45 , and the fixed ring limiting flange 45 is embedded in the hole sleeve limiting groove 12 .

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (3)

1. A compact socket connector with a rotary spring contact, characterized in that it includes a socket socket (1), a rotary spring contact (2), and a socket that matches the socket socket (1). The metal pin (3), the core of the jack socket (1) is provided with an insertion hole (11) that opens toward the insertion side of the metal pin (3), and the torsion spring contact (2) is embedded in the jack hole into the insertion hole (11) of the sleeve (1); The rotary spring contact (2) is rolled into a cylindrical shape by a rectangular metal sheet, and the rotary spring contact (2) includes a front holding ring (21) and a rear holding ring (22) respectively in the shape of a ring. The front-end holding ring (21) is located on the front-end side of the rear-end holding ring (22), and the front-end holding ring (21) and the rear-end holding ring (22) are coaxially arranged at intervals, and the rotary spring contact (2) is at the front end. Between the holding ring (21) and the rear holding ring (22) there are evenly spaced grid bars (23), the front fixing ring, the rear fixing ring and each grid bar (23) are integrated. structure, each grid bar (23) is twisted into a spiral shape by a cylindrical rotating spring contact (2) around the central axis, two adjacent grid bars form a grid bar group, and two grid bar bars in the same grid bar group The extension starting points of (23) are consistent, the extension starting points of the grid bars (23) of two adjacent grid bar groups are staggered, and the torsion spring contact piece (2) is respectively formed with ring-shaped The contact points distributed at intervals, the contact points of the grid bars (23) whose extension starting points are located on the same side are located on the same side; The metal pin (3) is embedded in the central hole of the rotary spring contact piece (2). 2. A compact jack connector with torsion spring contacts according to claim 1, characterized in that: said jack socket (1) is equipped with an anti-off ring (4), anti-off The retaining ring (4) includes an inner fixed ring (41) and an outer fixed ring (42) respectively in the shape of a ring, the inner fixed ring (41) and the outer fixed ring (42) are coaxially arranged at intervals and the inner fixed ring (41 ) is located at the inner end side of the outer fixed ring (42), and a retaining ring connecting part (43) is connected between the front end edge of the inner fixed ring (41) and the front end edge of the outer fixed ring (42) to prevent disengagement The ring (4) is formed with a retaining ring slot (44) which is enclosed by the inner retaining ring (41), the outer retaining ring (42), and the retaining ring connecting part (43) and is open to the rear. The front end of (1) is inserted into the retaining ring slot (44) of the anti-disengagement ring (4), and the inner fixed ring (41) of the anti-disengagement ring (4) is located on the rotating spring contact piece (2) The inner side of the front end of the retaining ring (21), the outer peripheral surface of the jack hole sleeve (1) is provided with a ring-shaped hole sleeve limiting groove (12), and the rear end edge of the outer fixed ring (42) is set There is a fixed ring limit flange (45) protruding radially inward, and the fixed ring limit flange (45) is embedded in the hole sleeve limit groove (12). 3. A compact receptacle connector with a swivel spring contact according to claim 1, characterized in that: the swivel spring contact (2) is formed by curling a rectangular copper sheet.