Circular connector
By incorporating a circular connector with sockets and stop structures within its inner housing, the problems of cumbersome installation and high cost in existing technologies are solved, achieving simple terminal fixation and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FORMAN PRECISION IND CO LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-14
AI Technical Summary
Existing circular connectors are cumbersome to install and have high production costs, requiring additional fasteners to secure the terminals.
The inner shell is provided with a first socket and multiple second sockets, and a stop structure is provided on its inner wall. The first harpoon terminal and multiple second harpoon terminals are used. The terminals are fixed by inserting and pulling out the locking part, thus eliminating the use of fixing parts.
It enables simple terminal installation, reduces production costs, and prevents terminals from falling off through a retaining structure.
Smart Images
Figure CN224123559U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a circular connector. Background Technology
[0002] Circular connectors are a type of connector with a basic cylindrical structure and a circular mating surface.
[0003] Existing circular connectors consist of an inner shell and cylindrical terminals. To fix the cylindrical terminals into the inner shell, an additional fixing component is often required. This component is used to install multiple cylindrical terminals into the inner shell in a concentrated manner, which is cumbersome and requires the production of an additional fixing component, resulting in high production costs. Utility Model Content
[0004] The main purpose of this invention is to propose a circular connector that addresses the problems of cumbersome installation and high production costs associated with existing circular connectors.
[0005] To achieve the above objectives, the circular connector proposed in this utility model includes:
[0006] The inner shell has a first socket and multiple second sockets inside.
[0007] The inner shell has a first insertion hole and multiple second insertion holes inside, and the inner walls of the first insertion hole and the second insertion holes are provided with a stop structure.
[0008] A first harpoon terminal is mounted at the center of the inner housing. The first harpoon terminal includes a first pin and a first locking portion. The side of the first pin protrudes outward relative to the side of the first locking portion. The first pin is received in a first socket. The first locking portion protrudes outside the inner housing. The stop structure abuts against the bottom of the first pin.
[0009] A plurality of second harpoon terminals are mounted in a ring array on the inner housing. Each second harpoon terminal includes a second pin and a second locking portion. The side of the second pin protrudes outward relative to the side of the second locking portion. The second pin is received in a second socket. The stop structure abuts against the bottom of the second pin. The second locking portion faces outward relative to the second pin from the inner housing.
[0010] In some embodiments, both the first pin and the second pin include two spring arms and a connecting portion. The connecting portion connects the two spring arms, and the two spring arms are separated. Both spring arms and the connecting portion are received in the first socket or the second socket. The first locking portion or the second locking portion is located on the side of the connecting portion away from the two spring arms, and the first locking portion or the second locking portion is exposed outside the inner shell.
[0011] In some embodiments, each of the spring arms has a contact spring foot on its inner side.
[0012] In some embodiments, both the first and second locking portions include a bending rod structure and a locking plate. One end of the bending rod structure is connected to the connecting portion and is bent outward relative to the connecting portion toward the outer side of the inner shell. The other end of the bending rod structure is connected to the locking plate.
[0013] The connecting part includes a limiting plate and a connecting rod structure. The limiting plate is connected to the two elastic arms. One end of the connecting rod structure is connected to the limiting plate, and the other end is connected to the bending rod structure.
[0014] In some embodiments, the bending rod structure is set at an angle to the bottom of the inner shell, the angle being greater than or equal to 50 degrees and less than or equal to 70 degrees.
[0015] In some embodiments, the card plate is provided with through holes for soldering to the core wire.
[0016] In some embodiments, the diameter of the connecting rod structure is smaller than the diameter of the limiting plate; the two spring arms are of the same length.
[0017] In some embodiments, both the first socket and the second socket include a slot and a stop groove, the two spring arms are received in the slot, and the limiting plate and the connecting rod structure are received in the stop groove; the inner wall of the stop groove is formed with a stop structure, and the stop structure abuts against the bottom of the two spring arms.
[0018] In some embodiments, the circular connector further includes a housing mounted outside the inner housing; the inner housing is cylindrical in shape, and the outer housing is cylindrical in shape.
[0019] In some embodiments, the inner shell is recessed with a slot, and the outer shell is protruding with a block. The block engages with the slot, and the outer shell engages with the inner shell.
[0020] The technical solution of this utility model involves providing a first socket and multiple second sockets inside the inner shell, with a stop structure on the inner wall of both the first socket and the inner wall of the multiple second sockets; it also includes a first harpoon terminal and multiple second harpoon terminals, wherein the side of the first pin of the first harpoon terminal protrudes outward relative to the side of the first locking part, the first pin is received in the first socket, the first locking part is exposed outside the inner shell, and the stop structure abuts against the bottom of the first pin; multiple second harpoon terminals are mounted in a circular array on the inner shell, the side of the second pin of the second harpoon terminal protrudes outward relative to the side of the second locking part, the second pin is received in the second socket, the stop structure abuts against the bottom of the second pin, and the second locking part faces outward relative to the second pin. When assembling the first and second harpoon terminals into the inner housing, the first harpoon terminal and multiple second harpoon terminals are directly inserted into the first and second sockets. Then, the first and second locking parts are pulled out of the first and second sockets. The retaining structures of the first and second sockets respectively limit the movement of the first and second pins, thus fixing the first harpoon terminal and multiple second harpoon terminals to the inner housing. Installation is simple and requires no fasteners, reducing production costs. Afterward, the second locking part can be bent at a certain angle to further prevent the second pins from falling out of the second socket. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0022] Figure 1 A schematic diagram of a circular connector embodiment provided by this utility model;
[0023] Figure 2 A schematic diagram of the structure of an embodiment of the circular connector provided by this utility model from another perspective;
[0024] Figure 3 An exploded structural diagram of an embodiment of the circular connector provided by this utility model;
[0025] Figure 4 A cross-sectional view of an embodiment of the circular connector provided by this utility model;
[0026] Figure 5 A schematic diagram of an embodiment of the second harpoon terminal provided by this utility model.
[0027] Explanation of icon numbers:
[0028] 100. Circular connector; 10. Outer shell; 11. Locking block; 20. Inner shell; 21. First socket; 211. Resistor groove; 212. Slot; 213. Stopping structure; 22. Second socket; 23. Locking groove;
[0029] 30. First harpoon terminal; 31. First pin; 311. Spring arm; 312. Contact spring; 313. Connecting part; 314. Limiting part; 315. Connecting rod structure; 32. First locking part;
[0030] 40. Second harpoon terminal; 41. Second pin; 42. Second locking part; 421. Bending rod structure; 422. Locking plate; 423. Through hole.
[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0035] The existing circular connector 100 includes an inner shell 20 and cylindrical terminals. To fix the cylindrical terminals into the inner shell 20, it is often necessary to add a fixing component to install multiple cylindrical terminals into the inner shell 20. The installation is cumbersome and requires the production of an additional fixing component, resulting in high production costs.
[0036] This utility model discloses a circular connector 100. Please refer to [link / reference needed]. Figure 1 , Figure 2 and Figure 4 In one embodiment of this utility model,
[0037] The circular connector 100 proposed in this utility model includes:
[0038] The inner shell 20 has a first socket 21 and a plurality of second sockets 22 inside;
[0039] The inner shell 20 has a first insertion hole 21 and a plurality of second insertion holes 22 inside. The inner wall of the first insertion hole 21 and the inner wall of the second insertion hole 22 are both provided with a stop structure 213.
[0040] A first harpoon terminal 30 is mounted at the center of the inner housing 20. The first harpoon terminal 30 includes a first pin 31 and a first locking portion 32. The side of the first pin 31 protrudes outward relative to the side of the first locking portion 32. The first pin 31 is received in a first socket 21, and the first locking portion 32 protrudes outside the inner housing 20. A stop structure 213 abuts against the bottom of the first pin 31.
[0041] Multiple second harpoon terminals 40 are mounted in a ring array on the inner housing 20. Each second harpoon terminal 40 includes a second pin 41 and a second locking portion 42. The side of the second pin 41 protrudes outward relative to the side of the second locking portion 42. The second pin 41 is received in a second socket 22. A stop structure 213 abuts against the bottom of the second pin 41. The second locking portion 42 faces outward relative to the second pin 41 from the inner housing 20.
[0042] When assembling the first harpoon terminal 30 and multiple second harpoon terminals 40 into the inner housing 20, the first harpoon terminal 30 and multiple second harpoon terminals 40 are directly inserted into the first socket 21 and the second socket 22. Then, the first locking part 32 and the second locking part 42 are pulled out from the first socket 21 and the second socket 22. The blocking structure 213 of the first socket 21 and the blocking structure 213 of the second socket 22 respectively limit the first pin 31 and the second pin 41, thus fixing the first harpoon terminal 30 and multiple second harpoon terminals 40 to the inner housing 20. The installation is simple and requires no fasteners, reducing production costs. Afterward, the second locking part 42 can be bent at a certain angle to further prevent the second pin 41 from falling out of the second socket 22.
[0043] The circular connector 100 of this invention is used to connect with a mating connector. The first harpoon terminal 30 and the second harpoon terminal 40 of this invention are used to make contact with the conductive terminals of the mating connector for electrical connection. A plurality of second harpoon terminals 40 in the circular connector 100 are arranged in a ring array within the inner shell 20 to be fixed in an orderly manner. The plurality of second harpoon terminals 40 are bent away from the first terminal, and are spaced apart and avoid contact with each other.
[0044] Furthermore, an outer shell 10 can be installed on the outside of the inner shell 20 via a threaded connection. The outer shell 10 can be used to protect the inner shell 20, the first harpoon terminal 30, and the second harpoon terminal 40. After the outer shell 10 is installed on the outside of the inner shell 20, the circular connector 100 can be plugged and unplugged from the mating connector by holding the outer shell 10.
[0045] Please see Figure 3 , Figure 4 and Figure 5 The first pin 31 and the second pin 41 each include two spring arms 311 and a connecting part 313. The connecting part 313 connects the two spring arms 311, and the two spring arms 311 are separated. The two spring arms 311 and the connecting part 313 are both received in the first socket 21 or the second socket 22. The first locking part 32 or the second locking part 42 is located on the side of the connecting part 313 away from the two spring arms 311, and the first locking part 32 or the second locking part 42 is exposed outside the inner shell 20.
[0046] In one embodiment, two spring arms 311 are used to make contact with the conductive terminals of a mating connector. A connecting portion 313 is used to connect the two spring arms 311. A first locking portion 32 or a second locking portion 42 is connected to the connecting portion 313 and extends in a direction away from the two spring arms 311.
[0047] When the first harpoon terminal 30 is inserted into the first socket 21, the blocking structure of the first socket 21 prevents the two spring arms 311 from disengaging from the first socket 21, thereby limiting the two spring arms 311 and the connecting part 313 within the first socket 21; the first locking part 32 can be pulled out from the first socket 21.
[0048] Similarly, when the second harpoon terminal 40 is inserted into the second socket 22, the blocking structure of the second socket 22 prevents the two spring arms 311 from disengaging from the second socket 22, thereby limiting the two spring arms 311 and the connecting part 313 within the second socket 22; the second locking part 42 can be pulled out from the second socket 22, and then the second locking part 42 can be bent to further prevent the second pin 41 from falling out of the second socket 22.
[0049] The circular connector 100 of this invention is used for connection with a mating connector. Furthermore, the first harpoon terminal 30 and the second harpoon terminal 40 of this invention are used for electrical contact with the conductive terminals of the mating connector. Please refer to [link / reference]. Figure 4 and Figure 5 Each spring arm 311 has a contact spring foot 312 on its inner side. The first harpoon terminal 30 and the second harpoon terminal 40 of this invention are provided with protruding contact spring feet 312 on the inner side of the two spring arms 311 for forming effective contact with the conductive terminals of the mating connector.
[0050] Furthermore, when the conductive terminals of the mating connector are pulled out from the first harpoon terminal 30 or the second harpoon terminal 40, the arc-shaped contact spring 312 can guide the conductive terminals of the mating connector to smoothly disengage, reducing resistance and facilitating high-frequency insertion and removal of the circular connector 100 and the mating connector.
[0051] For easier bending of the first locking part 32 and the second locking part 42, please refer to Figure 3 , Figure 4 and Figure 5 The first locking part 32 and the second locking part 42 both include a bending rod structure 421 and a locking plate 422. One end of the bending rod structure 421 is connected to the connecting part 313 and is bent outward relative to the connecting part 313 towards the inner shell 20. The other end of the bending rod structure 421 is connected to the locking plate 422. The connecting part 313 includes a limiting plate and a connecting rod structure 315. The limiting plate is connected to two spring arms 311. One end of the connecting rod structure 315 is connected to the limiting plate and the other end is connected to the bending rod structure 421.
[0052] When the second harpoon terminal 40 is not inserted into the second socket 22, the bending rod structure 421 is not bent, so that the second harpoon terminal 40 can be inserted into the second socket 22. Afterwards, the second locking part 42 is pulled out of the second socket 22, and then the bending rod structure 421 can be bent, causing the second locking part 42 to bend outwards towards the inner shell 20 to prevent the second pin 41 from falling out of the second socket 22. The bending rod structure 421 has a small diameter for easy bending.
[0053] In one embodiment, the bending rod structure 421 of the first locking part 32 may not need to be bent, and the first harpoon terminal 30 installed in the first socket 21 may be a straight plate structure to reduce the occurrence of the first harpoon terminal 30 contacting one or more of the second harpoon terminals 40.
[0054] Please see Figure 2 and Figure 5 The bent rod structure 421 is set at an angle to the bottom of the inner shell 20, with the angle being greater than or equal to 50 degrees and less than or equal to 70 degrees.
[0055] In one embodiment, the angle between the bent rod structure 421 and the bottom of the inner shell 20 can be 60 degrees to reduce the possibility of the second harpoon terminal 40 being bent too much and coming into contact with the inner wall of the outer shell 10.
[0056] Please see Figure 4 and Figure 5 The card plate 422 is provided with a through hole 423 for soldering to the core wire. Both the first carding part 32 and the second carding part 42 are soldered to the core wire so that the first harpoon terminal 30 and the second harpoon terminal 40 can conduct electricity through the core wire.
[0057] In one embodiment, the diameter of the connecting rod structure 315 is smaller than the diameter of the limiting plate; the two spring arms 311 are of the same length.
[0058] The first harpoon terminal 30 is a one-piece molded structure. The second harpoon terminal 40 is also a one-piece molded structure, so as to facilitate the one-time processing of the first harpoon terminal 30 or the second harpoon terminal 40.
[0059] Please see Figure 4 The first socket 21 and the second socket 22 both include a slot 212 and a stop groove 211. Two spring arms 311 are received in the slot 212, and a limiting plate and a connecting rod structure 315 are received in the stop groove 211. A stop structure 213 is formed on the inner wall of the stop groove 211, and the stop structure 213 abuts against the bottom of the two spring arms 311.
[0060] In one embodiment, a stop structure 213 protrudes from the stop groove 211. Since the two spring arms 311 in the first harpoon terminal 30 protrude relative to the first locking portion 32, the stop structure 213 abuts against the bottom of the two spring arms 311, preventing them from falling out of the first socket 21. Similarly, since the two spring arms 311 in the second harpoon terminal 40 protrude relative to the second locking portion 42, the stop structure 213 abuts against the bottom of the two spring arms 311, preventing them from falling out of the second socket 22.
[0061] Please see Figure 1 and Figure 2 The circular connector 100 also includes a housing 10, which is mounted outside the inner housing 20; the inner housing 20 is cylindrical in shape, and the housing 10 is cylindrical in shape.
[0062] In one embodiment, the outer shell 10 is installed on the outside of the inner shell 20 via a threaded connection. The outer shell 10 can be used to protect the inner shell 20, the first harpoon terminal 30, and the second harpoon terminal 40. After the outer shell 10 is installed on the outside of the inner shell 20, the circular connector 100 can be plugged and unplugged from the mating connector by holding the outer shell 10.
[0063] To prevent the outer casing 10 from rotating while mounted outside the inner casing 20, please refer to... Figure 2 and Figure 3 The inner shell 20 is recessed with a slot 23, and the outer shell 10 is protruding with a block 11. The block 11 is engaged with the slot 23, and the outer shell 10 is engaged with the inner shell 20, thereby preventing the outer shell 10 from rotating outside the inner shell 20.
[0064] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A circular connector characterized by comprising: include: The inner shell has a first insertion hole and multiple second insertion holes inside, and the inner walls of the first insertion hole and the second insertion holes are provided with a stop structure. The first harpoon terminal is installed at the center of the inner shell. The first harpoon terminal includes a first pin and a first locking part. The side of the first pin protrudes outward relative to the side of the first locking part. The first pin is received in the first socket. The first locking part is exposed outside the inner shell. The stop structure abuts against the bottom of the first pin. and A plurality of second harpoon terminals are mounted in a ring array on the inner housing. Each second harpoon terminal includes a second pin and a second locking portion. The side of the second pin protrudes outward relative to the side of the second locking portion. The second pin is received in a second socket. The stop structure abuts against the bottom of the second pin. The second locking portion faces outward relative to the second pin from the inner housing.
2. The circular connector as described in claim 1, characterized in that, Both the first pin and the second pin include two spring arms and a connecting portion. The connecting portion connects the two spring arms, and the two spring arms are separated. Both spring arms and the connecting portion are received in the first socket or the second socket. The first locking portion or the second locking portion is located on the side of the connecting portion away from the two spring arms, and the first locking portion or the second locking portion is exposed outside the inner shell.
3. The circular connector as described in claim 2, characterized in that, Each of the aforementioned spring arms has a contact spring foot on its inner side.
4. The circular connector as described in claim 2, characterized in that, Both the first and second locking parts include a bending rod structure and a locking plate. One end of the bending rod structure is connected to the connecting part and is bent towards the outside of the inner shell relative to the connecting part. The other end of the bending rod structure is connected to the locking plate. The connecting part includes a limiting plate and a connecting rod structure. The limiting plate is connected to the two elastic arms. One end of the connecting rod structure is connected to the limiting plate, and the other end is connected to the bending rod structure.
5. The circular connector as described in claim 4, characterized in that, The bent rod structure is set at an angle to the bottom of the inner shell, the angle being greater than or equal to 50 degrees and less than or equal to 70 degrees.
6. The circular connector as described in claim 4, characterized in that, The card plate has through holes for soldering with the core wire.
7. The circular connector as described in claim 4, characterized in that, The diameter of the connecting rod structure is smaller than the diameter of the limiting plate; the two spring arms are of the same length.
8. The circular connector as described in any one of claims 4 to 7, characterized in that, Both the first and second sockets include a slot and a stop groove. The two spring arms are received in the slot, and the limiting plate and the connecting rod structure are received in the stop groove. The inner wall of the stop groove is formed with a stop structure, which abuts against the bottom of the two spring arms.
9. The circular connector as described in any one of claims 1 to 7, characterized in that, The circular connector also includes a housing, which is mounted outside the inner housing; the inner housing is cylindrical in shape, and the outer housing is cylindrical in shape.
10. The circular connector as claimed in claim 9, characterized in that, The inner shell is recessed with a slot, and the outer shell is protruding with a block. The block engages with the slot, and the outer shell engages with the inner shell.