CN110416791A - pogo pin connector - Google Patents

Abstract

The invention discloses a pogo pin connector, which comprises a bushing, a contact terminal mounted on one end of the bushing, a central terminal mounted on the other end of the bushing, and a contact terminal connected to the bushing inside the bushing. The center terminal spring. The head of the contact terminal is exposed outside the sleeve, and the rest enters the sleeve, and the first inner protrusion of the sleeve snaps into the neck of the contact terminal, and the tooth-shaped protrusion of the contact terminal It then forms an interference fit with the bushing. The second inner protrusion of the sleeve can slide between the first isolation part and the second isolation part along the first slide bar of the center terminal; the cantilever of the sleeve is obliquely clamped on the second on the slide bar, while the tail end is exposed outside the entire casing.

Description

pogo pin connector

technical field

The invention relates to the technical field of connectors, in particular to a pogo pin connector with stable electrical transmission performance.

Background technique

Pogo pin connectors are used in electronic products such as mobile phones for connection. The pogo pin connector (POGO Pin) is a very fine probe, which can be made very small, so it can reduce the weight of the connector, save space, and beautify the appearance of the product when used in precision connectors.

Generally, the pogo pin connector is a spring-type probe formed by riveting the three basic parts of the needle, the needle tube and the spring through precision instruments. Since the pogo pin connector adopts a spring design, the pogo pin connector has space to slide up and down, but at the same time it will also affect the left and right positions of the connection point, thereby affecting the mechanical performance and radio frequency performance of the pogo pin connector.

Therefore, it is necessary to provide a new pogo pin connector, which can overcome the defects of the prior art.

Contents of the invention

The main purpose of the present invention is to provide a pogo pin connector, which has a precise and stable connection point, and will not shift left and right, so that the pogo pin connector can obtain more stable mechanical properties and radio frequency performance, and will not produce frequency deviation. shift.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve the above purpose, the present invention adopts the following technical solutions: a pogo pin connector, including a sleeve, a contact terminal, a central terminal, and a spring. The sleeve has a straight cylindrical body on which a circle of first inner convexity and a circle of second inner convexity are formed; wherein the first inner convexity is close to one end of the main body, and the second inner convexity is close to one end of the main body. The inner protrusion is close to the other end of the main body; a plurality of cantilevers are formed at the other end of the main body, and the diameter of the opening formed by the cantilevers is smaller than that of the main body. The contact terminal is mounted on one end of the sleeve, the contact terminal has an arc-shaped head formed at one end of the contact terminal, and a first positioning post formed at the other end of the contact terminal, between the head and the A neck is also formed between the first positioning posts, and a ring of tooth-like protrusions are respectively formed on the cylindrical surfaces on both sides of the neck; wherein the head is exposed outside the casing, the first positioning post, the neck Both the portion and the tooth-shaped protrusion enter into the sleeve, and the first inner protrusion snaps into the neck, and the tooth-shaped protrusion forms an interference fit with the sleeve. The center terminal is mounted on the other end of the bushing, the center terminal has a second positioning column formed at one end of the center terminal, a first isolation portion adjacent to the second positioning column, and a first isolation portion adjacent to the first isolation portion. a slide bar, a second isolation portion adjacent to the first slide bar, a second slide bar adjacent to the second isolation portion, and a tail end adjacent to the second slide bar and formed at the other end of the central terminal; Wherein the diameter of the first isolation part and the second isolation part are the same, and both form a clearance fit with the sleeve; the diameters of the positioning post, the first sliding rod and the second sliding rod are all smaller than the inner diameter of the sleeve ; when assembled, the second positioning post, the first isolation part, the first sliding rod, and the second isolation part all enter the casing from the opening defined by the cantilever in sequence, and the second inner convex shell Able to slide along the first slide bar between the first spacer and the second spacer; the cantilever of the bushing is clamped obliquely on the second slide bar of the center terminal, while the tail end is exposed outside the entire casing. The spring is installed in the casing, and connects the contact terminal and the center terminal in the casing.

In one embodiment, the spring is a cylindrical spring, the first positioning post of the contact terminal extends into one end of the spring, and the second positioning post of the center terminal extends into the other end of the spring.

In one embodiment, the first inner protrusion and the second inner protrusion are riveting points formed by a riveting process.

In one of the embodiments, the cantilever is formed into a tapered cone shape.

In one of the embodiments, the contact terminal includes a first section with the largest diameter located at one end of the contact terminal, a second section located in the middle of the contact terminal, and a first section with the smallest diameter located at the other end of the contact terminal. Three sections; wherein the head is located in the first section, the first positioning post is located in the third section, and the neck and the tooth-like protrusions are located in the second section.

In one embodiment, a shoulder is further formed between the first section and the second section of the contact terminal.

In one embodiment, the diameter of the tail end of the central terminal is larger than the diameter of the second sliding rod, forming a shoulder between the second sliding rod and the tail end.

Compared with the prior art, the pogo pin connector of the present invention makes the first inner protrusion engage with the neck through the structural change between the sleeve and the contact terminal, while the tooth-shaped protrusion and the sleeve form an interference fit, This double insurance structure can ensure a tight fit between the contact terminal and the bushing, so as to ensure that the contact terminal can be electrically contacted with the outside more reliably, and no left-right deviation will occur. At the same time, the pogo pin connector of the present invention also changes the structure of the central terminal so that a larger angle is formed between the cantilever of the sleeve and the second slide bar of the central terminal, thereby ensuring that the central terminal and the sleeve have a The reliable electrical connection relationship further ensures that the pogo pin connector has a stable electrical transmission function. In addition, the first positioning post and the second positioning post can ensure the controllability of the spring and reduce the free space of the spring, thereby improving the stability of the mechanical connection and the electrical connection between the contact terminal, the spring and the central terminal. Therefore, the pogo pin connector of the present invention has a precise and stable connection point (that is, the head of the contact terminal), which will not shift left and right, so that the pogo pin connector can obtain more stable mechanical properties and radio frequency performance, and will not generate frequency offset.

Description of drawings

Fig. 1 is a plan view of the combined structure of the pogo pin connector of the present invention.

FIG. 2 is a disassembled structural plan view of the pogo pin connector shown in FIG. 1 .

FIG. 3 is a disassembled three-dimensional structural diagram of the pogo pin connector of the present invention.

FIG. 4 is a schematic perspective view of the three-dimensional structure of the pogo pin connector of the present invention disassembled along another direction.

Fig. 5 is a schematic perspective view of the three-dimensional structure of the sleeve of the present invention.

Fig. 6 is a schematic perspective view of the three-dimensional structure of the sleeve of the present invention along another direction.

Fig. 7 is a schematic perspective view of the three-dimensional structure of the contact terminal of the present invention.

FIG. 8 is a schematic perspective view of the three-dimensional structure of the contact terminal of the present invention along another direction.

Fig. 9 is a schematic cross-sectional structure diagram of the contact terminal and the bushing combined according to the present invention.

FIG. 10 is a schematic perspective view of the three-dimensional structure of the central terminal of the present invention.

Fig. 11 is a schematic cross-sectional structure diagram of the combination of the central terminal and the sleeve of the present invention.

FIG. 12 is a schematic cross-sectional structure diagram of the pogo pin connector of the present invention.

The main reference signs in the accompanying drawings of the description of the present invention are explained as follows:

Pogo Pin Connector 1 Sleeve 10

Main body 11 First inner convex hull 12

Second inner convex hull 13 Cantilever 14

Opening 140 Contact terminal 20

Head 21 First Positioning Post 22

Neck 23 Dents 24

Shoulder 25 First Section 201

Second Paragraph 202 Third Paragraph 203

Center Terminal 30 Second Locating Post 31

End 32 First slider 33

Second slider 34 First partition 35

Second isolation part 36 spring 40.

Detailed ways

The following description of the embodiments refers to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only for reference to the attached drawings. direction. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

1 to 4, the pogo pin connector 1 of the present invention includes a sleeve 10, a contact terminal 20 mounted on one end of the sleeve 10, a central terminal 30 mounted on the other end of the sleeve 10, And a spring 40 located in the bushing 10 and connecting the contact terminal 20 and the center terminal 30 .

As shown in FIGS. 5 and 6 , the sleeve 10 has a substantially straight cylindrical body 11 . Formed on the main body 11 are a plurality of first inner convex hulls 12 located on the same circumference and a plurality of second inner convex hulls 13 located on the same circumference, wherein the first inner convex hulls 12 are close to the sides of the main body 11 One end forms a circle around it; the second inner protrusion 13 is close to the other end of the main body 11 and forms a circle around it. In this embodiment, the first inner protrusion 12 and the second inner protrusion 13 may be riveting points formed by a riveting process.

A plurality of elongated cantilevers 14 are formed at the other end of the main body 11, and these cantilevers 14 form a tapered shape with a tapered diameter. Specifically, the diameter of the opening 140 formed by the free ends of the cantilevers 14 is obviously smaller than the diameter of the main body 11 . Compared with the first inner convex hull 12 , the second inner convex hull 13 is closer to the cantilever 14 .

As shown in Figures 7 and 8, the contact terminal 20 is roughly in the shape of a short cylinder, one end of which is an arc-shaped head 21, and the other end is a first positioning post 22 with the smallest diameter, between the head 21 and the A neck 23 is also formed between the first positioning posts 22 , and a ring of tooth-shaped protrusions 24 are respectively formed on the cylindrical surfaces on both sides of the neck 23 .

More specifically, the contact terminal 20 is roughly divided into three sections with different diameters, including a first section 201 located at one end of the contact terminal 20 with the largest diameter, and a second section 201 located in the middle of the contact terminal 20 with a slightly smaller diameter. segment 202 , and a third segment 203 located at the other end of the contact terminal 20 and having the smallest diameter. The head 21 is located in the first section 201 , the first positioning column 22 is located in the third section 203 , and the neck 23 and the tooth-like protrusion 24 are located in the second section 202 .

In addition, a shoulder 25 (refer to FIG. 7 ) is formed between the first section 201 and the second section 202 of the contact terminal 20 , and its function will be described in detail later.

As shown in FIG. 9, the contact terminal 20 is mounted on one end of the sleeve 10, wherein the second segment 202 and the third segment 203 of the contact terminal 20 extend into the sleeve 10, and the first segment 201 is exposed outside the casing 10 . Specifically, the head portion 21 of the contact terminal 20 is exposed outside the sleeve 10 to prepare for electrical contact with an external device (not shown). Specifically, the first positioning post 22, the neck portion 23, and the tooth-shaped protrusion 24 of the contact terminal 20 all enter the sleeve 10, and the first inner protrusion 12 snaps into the neck portion. 23, and the tooth-like protrusions 24 form an interference fit with the inner wall of the sleeve 10, this double safety structure can ensure that the contact terminal 20 and the sleeve 10 are closely matched to ensure that the contact terminal 20 can The electrical contact with the outside world is more reliable, and there will be no left-right deviation. In addition, the shoulder 25 can limit the length of the contact terminal 20 protruding into the sleeve 10 , preventing the contact terminal 20 from being over-inserted into the sleeve 10 and ensuring that the head 21 of the contact terminal 20 is exposed to the outside.

As shown in FIG. 10 , the central terminal 30 is roughly in the shape of a long cylinder, one end of which is the second positioning post 31 with the smallest diameter, and the other end is the tail end 32 with the largest diameter. Between the second positioning post 31 and the tail end 32 A first slide bar 33 and a second slide bar 34 are formed therebetween. Wherein, a first isolation portion 35 with a larger diameter is formed between the first sliding rod 33 and the second positioning post 31 to separate the first sliding rod 33 and the second positioning post 31 . A second isolation portion 36 with an enlarged diameter is also formed between the first sliding rod 33 and the second sliding rod 34 to separate the first sliding rod 33 and the second sliding rod 34 . A shoulder 37 is formed between the second slide bar 34 and the rear end 32 . That is, the diameter of the tail end 32 is larger than the diameter of the second sliding rod 34 . In this embodiment, the diameter of the first isolation portion 35 is approximately the same as that of the second isolation portion 36 , and both are approximately the same as the inner diameter of the sleeve 10 , and can form a clearance fit. In addition, the diameter of the first sliding rod 33 and the diameter of the second sliding rod 34 can be the same or different, but they must be smaller than the diameters of the first isolation part 35 and the second isolation part 36, that is, the diameter of the first isolation part 35 and the second isolation part 36. The diameters of the first sliding rod 33 and the second sliding rod 34 are smaller than the inner diameter of the sleeve 10 .

As shown in FIG. 11, the central terminal 30 is mounted on the other end of the sleeve 10, wherein the second positioning post 31, the first isolation portion 35, the first sliding rod 33, and the second isolation portion 36 are all Enter the sleeve 10 sequentially from the opening 140 defined by the cantilever 14 . Of course, during the sliding process, the second sliding rod 34 can also enter into the sleeve 10 , but the tail end 32 of the central terminal 30 cannot enter into the sleeve 10 . In addition, the cantilever 14 of the sleeve 10 clamps the second sliding rod 34 of the central terminal 30 , while the tail end 32 is exposed outside the entire sleeve 10 and cannot enter into the sleeve 10 .

In detail, the second positioning column 31 of the central terminal 30 enters the sleeve 10 first, and the second inner convex 13 of the sleeve 10 is snapped into the first isolation part 35 and the second isolation part. 36 , and the second inner protrusion 13 can basically slide relatively along the first sliding rod 33 , but is limited to slide between the first isolation portion 35 and the second isolation portion 36 . That is to say, the relative sliding distance between the sleeve 10 and the central terminal 30 is the length of the first sliding bar 33 .

Furthermore, both the first isolation portion 35 and the second isolation portion 36 are columnar, and both can form a clearance fit with the sleeve 10 .

More importantly, since the diameter of the second sliding rod 34 is smaller than the diameter of the second isolation portion 36 , that is, the diameter of the second sliding rod 34 is smaller than the inner diameter of the main body 11 of the sleeve 10 , the cantilever 14 It will not be stretched horizontally by the second sliding bar 34 , that is, there will be no parallel contact between the cantilever 14 and the second sliding bar 34 , and such parallel contact is unreliable. In this embodiment, the cantilever 14 can still ride on the second sliding bar 34 in an oblique manner, and can slide along the second sliding rod 34. This oblique contact mode is very reliable, thereby ensuring the The central terminal 30 and the bushing 10 can be reliably connected, which further ensures that the pogo pin connector 1 has a stable electrical transmission function.

As shown in FIG. 12 , the spring 40 is located in the sleeve 10 , especially in the main body 11 of the sleeve 10 . In this embodiment, the spring 40 is a cylindrical spring 40, the first positioning column 22 of the contact terminal 20 extends into one end of the spring 40, and the second positioning column 31 of the center terminal 30 extends into the spring 40 In this way, the spring 40 can be positioned to limit the free movement space of the spring 40 . When the contact terminal 20 is subjected to external contact pressure, the contact terminal 20 and the sleeve 10 slide together along the central terminal 30 and compress the spring 40, and the resilience of the spring 40 can provide the contact terminal 20 with a External stable contact force.

To sum up, the pogo pin connector 1 of the present invention makes the first inner protrusion 12 engage with the neck 23 through the structural change between the sleeve 10 and the contact terminal 20 , while the tooth-like protrusion 24 and the sleeve 10 are Forming an interference fit, this double insurance structure can ensure a tight fit between the contact terminal 20 and the sleeve 10, so as to ensure that the contact terminal 20 can be electrically contacted with the outside world more reliably, and no left-right deviation will occur . At the same time, the pogo pin connector 1 of the present invention also changes the structure of the center terminal 30 so that a larger angle is formed between the cantilever 14 of the sleeve 10 and the second slide bar 34 of the center terminal 30, thereby ensuring the center The terminal 30 has a reliable electrical connection with the bushing 10 , which further ensures that the pogo pin connector 1 has a stable electrical transmission function. In addition, the controllability of the spring 40 can be ensured by the first positioning post 22 and the second positioning post 31, and the free movement space of the spring 40 can be reduced, thereby improving the mechanical connection and electrical connection between the contact terminal 20, the spring 40 and the central terminal 30. The stability of the connection. Therefore, the pogo pin connector 1 of the present invention has a precise and stable connection point (that is, the head 21 of the contact terminal 20), which does not shift left and right, so that the pogo pin connector 1 can obtain more stable mechanical performance and radio frequency performance. No frequency offset will occur.

Claims (7)

1. A pogo pin connector, characterized in that: the pogo pin connector includes a sleeve, a contact terminal, a central terminal, and a spring; The sleeve has a straight cylindrical body on which a circle of first inner convexity and a circle of second inner convexity are formed; wherein the first inner convexity is close to one end of the main body, and the second inner convexity is close to one end of the main body. The inner convex hull is close to the other end of the main body; a plurality of cantilevers are formed at the other end of the main body, and the diameter of the opening formed by the cantilever is smaller than that of the main body; The contact terminal is mounted on one end of the sleeve, the contact terminal has an arc-shaped head formed at one end of the contact terminal, and a first positioning post formed at the other end of the contact terminal, between the head and the A neck is also formed between the first positioning posts, and a ring of tooth-like protrusions are respectively formed on the cylindrical surfaces on both sides of the neck; wherein the head is exposed outside the casing, the first positioning post, the neck part, and the tooth-shaped protrusions all enter the sleeve, and the first inner protrusion is snapped into the neck, and the tooth-shaped protrusions form an interference fit with the sleeve; The center terminal is mounted on the other end of the bushing, the center terminal has a second positioning column formed at one end of the center terminal, a first isolation portion adjacent to the second positioning column, and a first isolation portion adjacent to the first isolation portion. a slide bar, a second isolation portion adjacent to the first slide bar, a second slide bar adjacent to the second isolation portion, and a tail end adjacent to the second slide bar and formed at the other end of the central terminal; Wherein the diameter of the first isolation part and the second isolation part are the same, and both form a clearance fit with the sleeve; the diameters of the positioning post, the first sliding rod and the second sliding rod are all smaller than the inner diameter of the sleeve ; when assembled, the second positioning post, the first isolation part, the first sliding rod, and the second isolation part all enter the casing from the opening defined by the cantilever in sequence, and the second inner convex shell Able to slide along the first slide bar between the first spacer and the second spacer; the cantilever of the bushing is clamped obliquely on the second slide bar of the center terminal, while the tail end is exposed outside the entire casing; and The spring is installed in the casing, and connects the contact terminal and the center terminal in the casing. 2. The pogo pin connector according to claim 1, wherein the spring is a cylindrical spring, the first positioning post of the contact terminal extends into one end of the spring, and the second positioning post of the center terminal is into the other end of the spring. 3 . The pogo pin connector according to claim 1 , wherein the first inner protrusion and the second inner protrusion are riveting points formed by a riveting process. 4 . 4. The pogo pin connector according to claim 1, wherein the cantilever is formed into a tapered shape with a tapered diameter. 5. The pogo pin connector as claimed in claim 1, wherein the contact terminal comprises a first segment at one end of the contact terminal with the largest diameter, a second segment at the middle of the contact terminal, and a The third segment with the smallest diameter located at the other end of the contact terminal; wherein the head is located at the first segment, the first positioning post is located at the third segment, and the neck and the serrated protrusion are located at the second segment . 6. The pogo pin connector as claimed in claim 5, wherein a shoulder is further formed between the first section and the second section of the contact terminal. 7. The pogo pin connector as claimed in claim 1, wherein the diameter of the tail end of the central terminal is larger than the diameter of the second slide bar, and a platform is formed between the second slide bar and the tail end. shoulder.