TWM472348U - RF connector - Google Patents

Description

Coaxial connector

The present invention relates to a coaxial connector, and more particularly to a coaxial connector with a switch.

The existing coaxial connector includes an insulative housing having a cavity for inserting a pair of plugs from top to bottom. A fixed terminal and a movable terminal are respectively fixed in the insulating housing to enter the cavity, and the mating plug is not inserted. The free end of the movable terminal is located below the contact portion of the fixed terminal, and the free end of the movable terminal has an elastic pressing force on the contact portion of the fixed terminal such that the two are in close contact with each other when the docking plug is inserted downward into the cavity and is movable At the time of the terminal, the free end of the movable terminal is separated from the contact portion of the fixed terminal to realize the switching function. For this type of coaxial connector, if it is to be mounted and fixed to the circuit board, the coaxial connector is first placed in a tin furnace, and then heated and fixed on the circuit board. Since the general insulating case is made of a plastic material, the insulating case is easily softened by heat at a high temperature. At this time, in a case where a part of the insulating case under the movable terminal is softened, the corresponding partial movable terminal is also easily inclined downward. On the other hand, the elastic pressing force of the free end of the movable terminal to the contact portion of the upper fixed terminal becomes small, and even the pressing abutment relationship is released. Then, after the coaxial connector is soldered to the circuit board, the insulating case is cooled and solidified, and the movable terminal is in contact with or completely out of contact with the fixed terminal with a small elastic pressing force, that is, the free end of the movable terminal The positive force applied to the contact portion of the fixed terminal is insufficient, from As a result, the contact between the movable terminal and the fixed terminal is poor, which further affects the function of electrical conduction.

Therefore, it is necessary to design a new coaxial connector to overcome the above problems.

In view of the problems faced by the background art, the purpose of the present invention is to provide a coaxial connector to ensure sufficient positive pressing force between the two terminals to achieve a stable guiding relationship.

In order to achieve the above object, the present invention adopts the following technical solution: a coaxial connector for soldering to a circuit board and for plugging an external device, comprising: a receiving slot, and a plug-in interface for the external device; The first terminal is mounted and fixed to the receiving slot, the first terminal is provided with a first soldering portion and at least one first contact portion, the first soldering portion is for soldering to the circuit board; The second terminal is mounted and fixed to the receiving slot, the second terminal is provided with a second soldering portion and at least one second connecting portion, the second soldering portion is for soldering to the circuit board; Before the external device is inserted into the coaxial connector for the first time, the first contact portion and the second contact portion form a first relative positional relationship; whenever the external device is inserted into the coaxial connector, The external device presses down against the second contact portion to disengage the second contact portion from the first contact portion, and the first contact portion and the second contact portion form a second relative position Relationship The coaxial connector is configured to be soldered to a circuit board and connected to the external device, and includes: a receiving slot, and a plug-in interface for inserting the external device; and a first terminal is fixedly mounted to the receiving device a slot, the first terminal is provided with a first soldering portion soldered to the circuit board and at least one first contact portion; a second terminal is mounted and fixed to the receiving slot, and the second terminal is provided with a second soldering portion Soldering on the circuit board and at least one second contact portion, the second contact portion abuts the first connection when the coaxial connector works normally and when the external device is not plugged a contact portion, forming a relative positional relationship between the first contact portion and the second contact portion; wherein the first contact portion and the coaxial connector are not soldered to the circuit board The second contact portions are not in contact with each other in the relative positional relationship. When the external device is separated from the coaxial connector, the second contact portion abuts the first contact portion to form a third relative positional relationship; the third relative positional relationship is different from the first Relative positional relationship.

Further, the first relative positional relationship is that the second contact portion clamps the first contact portion.

Further, the front end of the second contact portion is provided with two branches, and the first relative positional relationship is that the two branches sandwich the first contact portion.

Further, the first relative positional relationship is that the second contact portion overlaps an upper surface of the first contact portion.

Further, the first relative positional relationship is that the second contact portion laterally abuts the first contact portion.

Further, the first relative positional relationship is that the second contact portion is suspended above the first contact portion.

An electrical connector includes: a receiving slot; a first terminal and a second terminal are respectively mounted on the receiving slot, the first terminal has at least one first contact portion, and the second terminal Having at least one second contact portion; wherein, after the electrical connector is soldered and fixed to a circuit board, changing a relative positional relationship between the first contact portion and the second contact portion before soldering, in the first contact Pre-stressing is formed between the portion and the second contact portion to provide a positive force at which the first contact portion abuts the second contact portion, and the positive force acts on the electrical connector An electrical connection between the first contact portion and the second contact portion is maintained.

Further, after changing the relative positional relationship between the first contact portion and the second contact portion before soldering, the second contact portion abuts the first contact portion upward.

Further, the electrical connector is configured to be plugged into an external device, and when the external device is inserted into the electrical connector, the second contact portion is separated from the first contact portion to form an open circuit; After the device leaves the electrical connector, the second contact portion abuts the first contact portion upward.

Further, the second contact portion clamps the first contact portion before the electrical connector is not soldered to the circuit board.

Further, the second contact portion is overlapped on the first contact portion before the electrical connector is not soldered to the circuit board.

Further, the second contact portion is suspended above the first contact portion before the electrical connector is soldered to the circuit board.

Further, the second contact portion laterally abuts the first contact portion before the electrical connector is not soldered to the circuit board.

100‧‧‧ coaxial connector

1‧‧‧Insulating body

11‧‧‧ upper surface

110‧‧‧Strengthened ribs

12‧‧‧ Lower surface

13‧‧‧left side

14‧‧‧ right side

15‧‧‧ Containing trough

150‧‧‧plug interface

151‧‧‧ sloping wall

152‧‧‧Bevel

16‧‧‧ accommodating holes

17‧‧‧through hole

18‧‧‧ gap

2‧‧‧First terminal

21‧‧‧ First main body

22‧‧‧First Welding Department

23‧‧‧First contact

231‧‧‧Recipient Department

232‧‧‧ Guide surface

233‧‧‧ lap joint

234‧‧‧First Abutment

3‧‧‧second terminal

31‧‧‧Second Main Body

32‧‧‧Second welding department

33‧‧‧Fixed Department

34‧‧‧Second contact

341‧‧‧ Third Abutment

35‧‧‧ branch

351‧‧‧second abutment

352‧‧‧Clamping Department

4‧‧‧Upper cover

41‧‧‧Cylinder

42‧‧‧floor

420‧‧‧ bottom

421‧‧‧ positioning bumps

422‧‧‧ Groove

423‧‧ ‧ retaining wall

43‧‧‧ docking holes

430‧‧‧ Surface

5‧‧‧Shell

51‧‧‧Sleeve Department

510‧‧‧Deduction Department

52‧‧‧ Board

520‧‧‧ incision

521‧‧‧Covering Department

6‧‧‧External devices

61‧‧‧ pins

610‧‧‧Resistance Department

62‧‧‧Snap Department

The first figure is an exploded perspective view of the creative coaxial connector; the second figure is a perspective view of the creative coaxial connector when the external device is not plugged; the third figure is a cross-sectional view of the second figure; A perspective view of the coaxial connector when the external device is inserted; the fifth figure is a cross-sectional view of the fourth figure; the sixth figure is a schematic perspective view of the creative coaxial connector when the external device is pulled out; The seventh picture is a cross-sectional view of the sixth figure

In order to better understand the purpose, structure, features and functions of the present invention, the present coaxial connector will be further described in conjunction with the drawings and specific embodiments.

Referring to the first and second figures, the present coaxial connector 100 includes an insulative housing 1, a first terminal 2, a second terminal 3, an upper cover 4 and a housing 5, which are soldered and fixed to the circuit board. The figure is for accessing the external device 6.

Referring to the first figure, the insulative housing 1 has a square shape with an upper surface 11, a lower surface 12, a left side surface 13 and a right side surface 14. A receiving slot 15 is defined in the center of the upper surface 11 , and a receiving slot 150 is defined in the top of the receiving slot 15 . An inclined wall 151 is disposed at the bottom of the receiving groove 15, and the inclined wall 151 is a plane that gradually slopes downward from left to right. Two inclined surfaces 152 are oppositely disposed on the front and rear walls of the receiving groove 15 adjacent to the upper surface 11 , and the two inclined surfaces 152 are connected to the left and right walls of the receiving groove 15 . An elongated rib 110 is formed on the upper surface 11 adjacent to the left side surface 13 , and a receiving hole 16 is recessed from the left side surface 13 below the reinforcing rib 110 . The slots 15 are connected to each other. A through hole 17 is recessed upwardly from the lower surface 12 of the right side surface 14 to communicate with the receiving groove 15 . In addition, the front and rear sides of the insulative housing 1 are further recessed with a notch 18, and the notch 18 is substantially trapezoidal and has an upper width and a lower width.

Referring to the first figure, the first terminal 2 is stamped into a zigzag shape, and has a first main body portion 21 bent downward from one end of the first main body portion 21 and horizontally extended to form a first welding. Part 22. A first contact portion 23 is formed from the other end of the first body portion 21, and the first contact portion 23 is forwardly reduced. Two opposite portions of the first contact portion 23 are provided with two receiving portions 231. Two guiding surfaces 232 are provided at the front end of the receiving portion 231. In the A lap portion 233 is disposed on the upper surface of the first contact portion 23, and two first abutting portions 234 are disposed on the lower surface of the first contact portion 23.

Referring to the first figure and the second figure, the second terminal 3 is also stamped into a zigzag shape by a metal plate, and has a second body portion 31, and the second body portion 31 has a flat shape. a second soldering portion 32 is formed by bending from one end of the second main body portion 31 to the second soldering portion 32. The second main body portion 31 is horizontally extended to form two fixing portions 33 on the two sides of the second soldering portion 32. The fixing portion 33 is a portion that connects the tape. In this embodiment, a second contact portion 34 is formed from the other end of the second body portion 31, and a C-shaped opening is formed at the front end of the second contact portion 34, that is, a two branch 35 is formed. The upper surface of the two branches 35 has two second abutting portions 351 , and two clamping portions 352 are disposed on the inner side surfaces of the two branches 35 . In addition, the upper surface of the second contact portion 34 further has a third abutting portion 341 for pressing the external device 6. In other embodiments, the second contact portion 34 may also be L-shaped or other shapes, and the number may also be two or more.

Referring to the first figure and the second figure, the upper cover 4 is injection molded of an insulating material. The upper cover 4 includes a cylinder 41 and a bottom plate 42. The cylinder 41 and the bottom plate 42 smoothly transition to connect up and down. A circular abutting hole 43 is defined in the center of the cylinder 41. The hole wall of the butt hole 43 is a curved surface 430 of an inverted cone shape. Further, the curved surface 430 gradually increases the aperture of the butt hole 43 from top to bottom. Become smaller. The bottom plate 42 has a bottom surface 420. The bottom surface 420 is oppositely disposed with two positioning protrusions 421, and the outer sides of the two positioning protrusions 421 are inclined. A groove 422 is formed between the two positioning protrusions 421, the groove 422 and the butting hole 43 are vertically penetrated, and the groove 422 has a width larger than the first terminal 2 and the second The width of the terminal 3. A retaining wall 423 is disposed on the right side of the recess 422, and the retaining wall 423 connects the two positioning protrusions 421.

Referring to the first and third figures, the outer casing 5 is formed by stamping a metal material. A sleeve portion 51 and a plate portion 52 are provided which are arranged one above the other, and the sleeve portion 51 is connected to the plate portion 52 in a smooth transition manner. The sleeve portion 51 is provided with a fastening portion 510 for snap-fitting the external device 6 , and the fastening portion 510 is an annular groove located around the sleeve portion 51 . Each of the left and right sides of the plate portion 52 is recessed into a recess 520, and the length of the slit 520 is greater than the length of the reinforcing rib 110. A covering portion 521 is formed to be bent downwardly on the front and rear sides of the plate portion 52, and the side of the covering portion 521 is regarded as a C-shape, and the bottom surface of the covering portion 521 and the plate shape The sections 52 are parallel.

Referring to the third figure, the external device 6 includes a pin 61 and a snap portion 62. The pin 61 is provided with a pressing portion 610 at the end.

Please refer to the first figure, the second figure and the third figure. When assembling, the first terminal 2 is integrally formed with the insulative housing 1 , that is, the first terminal 2 is formed by insert molding (Insert Molding). In the insulative housing 1 , the first contact portion 23 enters the receiving groove 15 , the first soldering portion 22 exposes the right side surface of the insulative housing 1 , and the bottom surface of the first soldering portion 22 is The lower surface 12 is in the same horizontal plane. Then, the second terminal 3 is inserted into the insulative housing 1 from the left side, and the second contact portion 34 passes through the receiving hole 16 into the receiving slot 15, and the fixing portion 33 is retained in the receiving portion. In the hole 16, the second soldering portion 32 exposes the left side surface of the insulative housing 1, and the bottom surface of the second soldering portion 32 is also in the same horizontal plane as the lower surface 12. Thus, the operation of attaching and fixing the first terminal 1 and the second terminal 2 to the receiving groove 15 is substantially completed.

Referring to the first, second and third figures, in particular, in the embodiment, the second terminal 3 is loaded by the two branches 35 sliding over the two guiding surfaces 232. The two branches 35 are slightly opened by the pressing of the first contact portion 23 until the two branches 35 The two clamping portions 351 are clamped to the two receiving portions 231 such that the two second contact portions 34 clamp the first contact portion 23, and at this time, the first contact portion 23 and the second portion The contact portions 34 are maintained at the same level. In other embodiments, after the second terminal 3 is installed, the second contact portion 34 can also overlap the lap portion 233, that is, the second contact portion 34 is overlapped with the first portion The upper surface of a contact portion 23. At this time, the second contact portion 34 is overlapped on the first contact portion 23 with a slight upward inclination. Of course, the second contact portion 34 may not be in contact with the overlapping portion 233 and may be suspended in the first portion. Above a contact portion 23. In addition, in other embodiments, the second terminal 3 may also have an L shape or other shape, and the second terminal 3 may also have only one second contact portion 34, and the second contact portion 34 also The first contact portion 23 can be laterally abutted. Before the external device 6 is inserted into the coaxial connector 100 for the first time, the first contact portion 23 and the second contact portion 34 are in the above-mentioned position state, which may be defined as a first Relative positional relationship.

Referring to the first, second and third figures, the upper cover 4 is integrally formed with the outer casing 5, that is, the cylinder 41 is insert molded into the sleeve portion 51. The two positioning ribs 421 are inserted into the receiving groove 15 corresponding to the two inclined surfaces 152. The slits 520 are placed at the periphery of the reinforcing ribs 110, and the covering portion 521 is wrapped in the notch 18. The upper cover 4 and the outer casing 5 are integrally mounted on the insulating body 1 . The outer casing 5 has a function of generally grounding, and plating is applied to the outer surface of the outer casing 5 as needed.

Referring to the first, second and third figures, the assembled coaxial connector 100 is then placed in a high temperature tin furnace to weld the first welded portion 22 and the second welded portion 32. The coaxial connector 100 is soldered to the circuit board (not shown) on the circuit board (not shown). In this process, the insulative housing 1 is susceptible to thermal softening due to the high temperature in the soldering furnace. In this embodiment, the coaxial connector 100 is not soldered to the circuit board (not shown). Further, before the external device 6 is inserted into the coaxial connector 100 for the first time, the second contact portion 34 clamps the first contact portion 23, thereby avoiding the second terminal 3 The downward tilting or squatting caused by the softening of the plastic causes the second terminal 3 to finally abut against the first terminal 2, and the positive force is insufficient and the contact is poor.

In other embodiments, the coaxial connector 100 is not soldered before the circuit board (not shown), and further, before the external device 6 is plugged into the coaxial connector 100 for the first time, The second contact portion 34 is overlapped with the upper surface of the first contact portion 23, or the second contact portion 34 is suspended above the first contact portion 23, and the second contact portion 34 is laterally Abutting against the first contact portion 23, the downward conduction or sag of the second terminal 3 due to plastic softening can be avoided to affect the electrical conduction function of the coaxial connector 100. In another aspect, before the external device 6 is inserted into the coaxial connector 100 for the first time, when the first contact portion 23 and the second contact portion 34 are in the first relative position relationship, The downward conduction or sag of the second terminal 3 due to softening of the plastic is prevented from affecting the electrical conduction function of the coaxial connector 100.

Referring to the first figure and the fourth to seventh figures, after the coaxial connector 100 is soldered and fixed to a circuit board (not shown), the external device 6 is inserted downward into the coaxial connector 100 for the first time. The latching portion 62 is engaged with the latching portion 510, and the pin 61 enters the receiving slot 15 through the mating hole 43 and the plug connector 150. The pressing portion 610 is pressed against the third abutting portion 341 (ie, the external device 6 presses the second contact portion 34), and pushes the second contact portion 34 downward to move. The second contact portion 34 is elastically deformed downward, and after the first contact portion 23 is scraped, traverses the first contact portion 23 such that the second contact portion 34 is located below the first contact portion 23, Until the second terminal 3 is separated from the first terminal 2 An open circuit is formed, and the first contact portion 23 and the second contact portion 34 are defined to be in a second relative positional relationship. In addition, at this time, the two second contact portions 34 at the front end of the second contact portion 34 are elastically restored to a natural state before being pressed by the first contact portion 23. The external device 6 herein is a test probe or other conductive or non-conductive element similar to the probe, and the first contact portion 23 and the second portion can be made when the first insertion operation is completed. The contact portion 34 changes from being in the first relative positional relationship to being in the second relative positional relationship.

Referring to the first figure and the fourth to seventh figures, the pin 61 is pulled out of the coaxial connector 100 (ie, after the external device 6 leaves the coaxial connector 100), The second contact portion 34 elastically recovers upward due to the pressing of the external force, and then the second abutting portion 351 abuts against the first abutting portion 234, that is, the second contact portion 34 abuts upward. The first contact portion 23 forms a third relative positional relationship, thereby changing the abutting relationship between the first contact portion 23 and the second contact portion 34 before welding, that is, changing the first before welding The relative positional relationship between the contact portion 23 and the second contact portion 34. Referring to the second, third, sixth and seventh figures, it is apparent that the first relative positional relationship and the third positional relationship are different positional relationships, in other words, the third The relative positional relationship is different from the first relative positional relationship.

Referring to the first figure and the fourth to seventh figures, thereafter, each time the external device 6 is inserted into the coaxial connector 100, the second contact portion 34 is separated from the first contact portion 23 to form Disconnecting (ie, forming the second relative positional relationship); each time the external device 6 leaves the coaxial connector 100, the second contact portion 34 abuts against the first contact portion 23 (ie, forms The third relative positional relationship). In other words, the second contact portion 34 abuts against the first contact portion 23 such that a pre-form is formed between the first terminal 2 and the second terminal 3. The force provides a positive force that the first contact portion 23 abuts against the second contact portion 34, and further provides a positive direction in which the second contact portion 34 abuts the first contact portion 23 upward. a force to maintain an electrical connection between the first contact portion 23 and the second contact portion 34 by the positive force when the coaxial connector 100 is operated, thereby causing the first terminal 2 Maintaining electrical conduction with the second terminal 3.

In the above embodiment, the switch-equipped coaxial connector for the high-frequency circuit has been described, but the present invention is not limited thereto, and can be applied to other general electrical connectors, especially for the case where the terminal is tilted downward due to softening of the plastic or Under the armpit, the electrical connector that causes the contact between the terminals to have insufficient positive force causes the battery to be unable to conduct normally.

In summary, the created coaxial connector has the following beneficial effects:

1. Since the coaxial connector 100 is not soldered to the circuit board (not shown), further, before the external device 6 first plugs the coaxial connector 100, the first a contact portion 23 and the second contact portion 34 are in the first relative positional relationship, that is, the second contact portion 34 clamps the first contact portion 23, or the second contact portion 34 overlaps The upper surface of the first contact portion 23 or the second contact portion 34 is suspended above the first contact portion 23, and the second contact portion 34 is laterally abutted to the first contact portion The second portion 3 can be prevented from being tilted or collapsed downward due to thermal softening of the insulative housing 1 during soldering, thereby ensuring that the first terminal 2 and the second terminal 3 are sufficient. Contact positive force to achieve good electrical continuity when operating normally.

2. When the external device 6 is inserted into the coaxial connector 100, the pressing portion 610 pushes against the third abutting portion 341 such that the second terminal 3 is displaced downward, and the first After the terminal 2 is scraped, it spans the first terminal 2, and during the scraping process, the first The flux of the contact portion 34 and the edge of the first contact portion 23 adhered to the edge of the first contact portion 23 can be scraped off, so that the first terminal 2 and the second terminal 3 can be made The conductivity is better.

3. Since the first terminal 2 is integrally formed with the insulative housing 1 and then the second terminal 3 is inserted, the upper cover 4 is also integrally formed with the outer casing 5, and then mounted and fixed. On the insulating body 1, the assembly is completed, and thus it can be seen that the entire assembly process is simple, thereby improving assembly efficiency.

The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention, and all changes or modifications made by the technical spirit disclosed in the present invention should belong to The scope of patents covered by this creation.

100‧‧‧ coaxial connector

1‧‧‧Insulating body

11‧‧‧ upper surface

110‧‧‧Strengthened ribs

12‧‧‧ Lower surface

13‧‧‧left side

14‧‧‧ right side

15‧‧‧ Containing trough

150‧‧‧plug interface

151‧‧‧ sloping wall

152‧‧‧Bevel

16‧‧‧ accommodating holes

17‧‧‧through hole

18‧‧‧ gap

2‧‧‧First terminal

21‧‧‧ First main body

22‧‧‧First Welding Department

23‧‧‧First contact

231‧‧‧Recipient Department

232‧‧‧ Guide surface

233‧‧‧ lap joint

234‧‧‧First Abutment

3‧‧‧second terminal

31‧‧‧Second Main Body

32‧‧‧Second welding department

33‧‧‧Fixed Department

34‧‧‧Second contact

341‧‧‧ Third Abutment

35‧‧‧ branch

351‧‧‧second abutment

352‧‧‧Clamping Department

4‧‧‧Upper cover

41‧‧‧Cylinder

42‧‧‧floor

420‧‧‧ bottom

421‧‧‧ positioning bumps

422‧‧‧ Groove

423‧‧ ‧ retaining wall

5‧‧‧Shell

51‧‧‧Sleeve Department

510‧‧‧Deduction Department

52‧‧‧ Board

520‧‧‧ incision

521‧‧‧Covering Department

Claims (6)

A coaxial connector for soldering to a circuit board and for plugging in an external device, comprising: a receiving slot, a plug-in interface for inserting the external device; and a first terminal mounted and fixed to the The first terminal is provided with a first soldering portion and at least one first contact portion, wherein the first soldering portion is for soldering to the circuit board; and a second terminal is mounted and fixed to the receiving slot. The second terminal is provided with a second soldering portion and at least one second contact portion for soldering to the circuit board; wherein the external connector is inserted into the coaxial connector for the first time The first contact portion and the second contact portion form a first relative positional relationship; when the external device is inserted into the coaxial connector, the external device presses down against the second contact Disconnecting the second contact portion from the first contact portion, the first contact portion and the second contact portion forming a second relative positional relationship; when the external device leaves the coaxial connector After the second connection Upwardly into abutment with the first contact portion is formed a third relative positional relationship, a third relative positional relationship different from the first relative positional relationship. The coaxial connector of claim 1, wherein the first relative positional relationship is that the second contact portion clamps the first contact portion. The coaxial connector according to claim 2, wherein the front end of the second contact portion is provided with two branches, and the first relative positional relationship is that the two branches sandwich the first contact portion. The coaxial connector according to claim 1, wherein the first relative positional relationship is that the second contact portion overlaps an upper surface of the first contact portion. The coaxial connector according to claim 1, wherein the first relative positional relationship is that the second contact portion laterally abuts the first contact portion. The coaxial connector of claim 1, wherein the first relative positional relationship is that the second contact portion is suspended above the first contact portion.