Rolled jack and connector using same

Abstract

The invention relates to the technical field of electric connectors, in particular to a rolled jack and a connector using the same. The rolled jack comprises a contact piece, the front end of the contact piece is used for being inserted into an adaptive pin, at least two convex spring claws are distributed at the rear end of the contact piece in the circumferential direction, each spring claw is of an elastic cantilever structure extending in the front-back direction, and each spring claw is provided with a contact part used for being in contact connection with a circuit board. Each spring claw is of an elastic cantilever structure extending in the front-back direction, so that the spring claws can generate elastic deformation when being extruded in the radial direction, and when the rear end of the contact element is inserted into a circuit board, each spring claw is extruded by the hole wall of a connecting hole in the circuit board to generate elastic deformation, so that softer insertion force can be provided; and the contact holding force between each spring claw and the connecting hole is improved, so that the contact is more stable, and the connection between the jack and the circuit board is more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and in particular to a rolled socket and a connector using the socket. Background Art

[0002] At present, new energy vehicles need to use a charging socket structure in conjunction with a charging gun for charging. During the charging process, stable communication between the charging gun and the vehicle is an important guarantee for charging safety. At present, new energy vehicle charging sockets mainly use Φ3 jacks as an indispensable part of signal connection. The existing jacks are mainly formed by machining, which takes a long time to process, consumes a lot of raw materials, and has high costs. In addition, the jack body and the seal are independent of each other, and the assembly process is complicated.

[0003] A Chinese utility model patent with authorization announcement number CN218415071U discloses a solderless socket for use in a circuit board, including a first contact piece and a second contact piece, both of which are formed by curling a conductive strip, the first contact piece including a first contact piece body and a sheath sleeved on the outer periphery of the first contact piece body, the first contact piece body and the second contact piece are integrally formed, the front end of the first contact piece is engaged with the adapter pin through a thin waist-shaped elastic structure, the front end of the second contact piece is interference fit with the connecting hole on the circuit board through an elastic part, the elastic part includes a middle convex elastic surface and a guide structure at the front end, the elastic surface is composed of a plurality of middle convex spring pieces distributed at intervals along the circumferential direction. When the socket is plugged into the circuit board, the spring pieces at the front end of the second contact piece are squeezed by the hole wall of the connecting hole on the circuit board and form an interference fit with the connecting hole on the circuit board to achieve connection. Since the two ends of the spring piece are fixed and the middle is convex, it is very unlikely that the spring piece can actually undergo elastic deformation when squeezed. Basically, plastic deformation occurs. The spring piece is forcibly squeezed and deformed and cannot recover after deformation. The socket is rigidly inserted into the circuit board, and the contact retention force after insertion is poor, resulting in unreliable connection between the socket and the circuit board. Summary of the invention

[0004] The purpose of the present invention is to provide a rolled jack to solve the problem of unreliable connection between the existing jack and the circuit board; the purpose of the present invention is also to provide a connector using the jack to solve the problem of unreliable connection between the existing connector and the circuit board.

[0005] The rolled jack of the present invention adopts the following technical solution: A rolled socket comprises a contact piece, the front end of which is used to engage with an adapting pin, and the rear end of which is circumferentially provided with at least two outwardly protruding spring claws, the spring claws being elastic cantilever structures extending in the front-to-back direction, and having contact points for contacting and connecting with a circuit board.

[0006] Furthermore, the rear end of the spring claw is fixed, and the front end is a cantilevered free end.

[0007] Further, the spring claw is wave-shaped, and the peak portion of the spring claw constitutes the contact portion.

[0008] Further, the peak portion of the spring claw is close to the overhanging free end.

[0009] Further, the spring claw is formed by bending a suspension piece cut from the contact member body.

[0010] Further, the rolled jack further includes a sheath sleeved on the outside of the front end of the contact member. The front end of the contact member includes an elastic contact portion and a support portion from front to back. At least two contact elastic pieces are circumferentially distributed on the elastic contact portion. The front end portion of each contact elastic piece is bent inward to form a necking structure. All the contact elastic pieces jointly enclose an insertion cavity for the mating pin to be inserted. The front end of the sheath is provided with an auxiliary pressing structure, and the auxiliary pressing structure radially presses inward on the contact elastic pieces.

[0011] Further, the auxiliary pressing structure includes at least two inwardly protruding pressing elastic pieces circumferentially distributed on the sheath. The pressing elastic pieces are elastic cantilever structures extending in the front-rear direction, and each pressing elastic piece radially presses inward on the contact elastic pieces.

[0012] Further, the rear end of the pressing elastic piece is fixed, and the front end overhangs inwardly obliquely.

[0013] Beneficial effects: The rolled jack of the present invention is an improved invention. The front end of the contact member of the jack is used for mating with the mating pin. At least two outwardly protruding spring claws are circumferentially distributed at the rear end of the contact member. The spring claws are elastic cantilever structures extending in the front-rear direction, so that the spring claws can elastically deform when subjected to radial extrusion. When the rear end of the contact member is inserted into the circuit board, each spring claw is elastically deformed by the extrusion of the hole wall of the connection hole on the circuit board, which can provide a softer insertion force and improve the contact retention force between each spring claw and the connection hole, making the contact more stable and the connection between the jack and the circuit board more reliable.

[0014] The connector of the present invention adopts the following technical solution: A connector, including a socket housing and a rolled jack installed in the socket housing. The rolled jack includes a contact member. The front end of the contact member is used for mating with the mating pin. At least two outwardly protruding spring claws are circumferentially distributed at the rear end of the contact member. The spring claws are elastic cantilever structures extending in the front-rear direction, and the spring claws have contact portions for contacting and connecting with the circuit board.

[0015] Further, the rear end of the spring claw is fixed, and the front end is an overhanging free end.

[0016] Further, the spring claw is wave-shaped, and the peak portion of the spring claw constitutes the contact portion.

[0017] Further, the peak portion of the spring claw is close to the overhanging free end.

[0018] Further, the spring claw is formed by bending a cantilever piece cut from the contact body.

[0019] Further, the rolled jack further includes a sheath sleeved on the outside of the front end of the contact. The front end of the contact includes an elastic contact portion and a support portion from front to back. At least two contact elastic pieces are circumferentially distributed on the elastic contact portion. The front-end portions of the contact elastic pieces are bent inward to form a necking structure. All the contact elastic pieces together enclose an insertion cavity for the mating pin to be inserted. The front end of the sheath is provided with an auxiliary pressing structure that radially presses inward on the contact elastic pieces.

[0020] Further, the auxiliary pressing structure includes at least two inwardly protruding pressing elastic pieces circumferentially distributed on the sheath. The pressing elastic pieces are elastic cantilever structures extending in the front-rear direction, and each pressing elastic piece radially presses inward on the contact elastic pieces.

[0021] Further, the rear end of the pressing elastic piece is fixed, and the front end is inclined and overhanging inward.

[0022] Beneficial effects: The connector of the present invention is an improved invention. The front end of the contact is used for mating with the mating pin. At least two outwardly protruding spring claws are circumferentially distributed at the rear end of the contact. The spring claws are elastic cantilever structures extending in the front-rear direction, so that the spring claws can undergo elastic deformation when subjected to radial extrusion. When the connector is inserted into the circuit board, each spring claw at the rear end of the contact is elastically deformed by the hole wall of the connection hole on the circuit board, which can provide a softer insertion force, and improve the contact retention force between each spring claw and the connection hole, making the contact more stable and the connection between the connector and the circuit board more reliable. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the rolled jack of the present invention; Figure 2 is a schematic structural diagram of the contact; Figure 3 is a schematic structural diagram of the sheath; Figure 4 is a schematic structural diagram of the sheath from another perspective; In the figure: 1, contact; 101, spring claw; 102, notch; 103, fixing hole; 104, contact elastic piece; 2, sheath; 201, pressing elastic piece; 202, barb; 203, barb groove; 204, positioning claw; 205, fixing piece; 206, anti-misalignment key; 3, seal. Detailed Embodiments

[0024] When inserting an existing jack for a circuit board into the circuit board, it is a hard insertion, and the contact holding force after insertion is poor, resulting in unreliable connection between the jack and the circuit board. To solve the problems existing in the existing jacks, the present invention provides a rolled jack and a connector using the jack, which can provide a softer insertion force and make the connection between the jack and the circuit board more reliable. The basic inventive concept of the present invention is: an outwardly protruding spring claw is provided at the rear end of the contact member of the rolled jack, and the spring claw is an elastic cantilever structure. Since one end of the spring claw is a free end, the spring claw has the freedom to elastically deform. When inserting the rear end of the contact member into the circuit board, each spring claw is elastically deformed by the extrusion of the hole wall of the connection hole on the circuit board, so that a softer insertion force can be provided, and the contact holding force between each spring claw and the connection hole can be improved, making the connection between the jack and the circuit board more reliable.

[0025] Based on the above inventive concept, the embodiments of the present invention are introduced in detail below.

[0026] Embodiment of the rolled jack of the present invention: As Figure 1 shown, the rolled jack includes a contact member 1, a sheath 2 and a seal 3. The sheath 2 is sleeved on the outer side of the front end of the contact member 1, and the seal 3 is vulcanized and formed on the contact member 1. The seal 3 is used for sealing cooperation with the socket housing. Both the contact member 1 and the sheath 2 are formed by curling conductive strips. Compared with the machining method, the processing time of the jack is shortened, the manufacturing cost is reduced, and the assembly process is simplified.

[0027] The structure of the contact member 1 is as Figure 2 shown. The front end of the contact member 1 is used for mating with a mating pin. Two or more outwardly protruding spring claws 101 are circumferentially distributed at the rear end of the contact member 1. The spring claws 101 are elastic cantilever structures extending in the front-rear direction. The rear ends of the spring claws 101 are fixed, and the front ends are overhanging free ends. The spring claws 101 have contact portions for contacting and connecting with the circuit board. Since the spring claws 101 are elastic cantilever structures extending in the front-rear direction and one end is a free end, the spring claws 101 can elastically deform when subjected to radial extrusion, generating an elastic extrusion force. When inserting the rear end of the contact member 1 into the circuit board, each spring claw 101 is elastically deformed by the extrusion of the hole wall of the connection hole on the circuit board, so that a softer insertion force can be provided, the fatigue resistance is better, and the contact holding force between each spring claw 101 and the connection hole can be improved, increasing the contact stability and making the connection between the jack and the circuit board more reliable.

[0028] Considering that when the rear end of the contact 1 is inserted into the circuit board, the rear end of the spring claw 101 enters the connection hole on the circuit board first. As the insertion continues, the spring claw 101 is gradually compressed and deformed. In this embodiment, the rear end of the spring claw 101 is fixed, and the front end is set as a cantilever free end, which can make the insertion of the rear end of the contact 1 into the circuit board more smooth, and completely avoid the interference between the cantilever free end of the spring claw 101 and the circuit board, thus affecting the insertion. Of course, in other embodiments, the front end of the spring claw 101 can also be fixed, and the rear end is set as a cantilever free end. The rear end needs to be designed with a bent insertion guiding portion to guide the rear end of the spring claw 101 to insert into the connection hole on the circuit board.

[0029] Preferably, the spring claw 101 is designed in a waveform, and the peak portion of the spring claw 101 constitutes a contact portion for contacting and connecting with the circuit board. After the contact 1 is inserted into the circuit board in place, the hole wall of the connection hole on the circuit board generates a radially inward squeezing force on the peak portion of the spring claw 101, which can further improve the contact retention force between each spring claw 101 and the connection hole, fully ensure the point contact between each spring claw 101 and the connection hole, make it difficult for the contact 1 to withdraw, and make the contact connection more reliable. The peak portion of the spring claw 101 is close to the front end, that is, the cantilever free end, which is more conducive to the elastic deformation of the spring claw 101 after being compressed and provides a large elastic force to improve the contact stability. Of course, in other embodiments, the peak portion of the spring claw 101 can also be located in the middle or a more rearward position of the spring claw 101. In addition, in other embodiments, the spring claw 101 can also be of other shapes, such as a straight claw that extends obliquely outward from the rear to the front. The rear end of the straight claw is fixed, and the front end extends obliquely outward. The structure of the straight claw is simpler and more convenient to form.

[0030] The spring claw 101 is formed by bending a suspension piece cut from the contact body. The contact body is formed by curling a conductive strip. Cutting holes and suspension pieces are cut on the conductive strip, and the suspension pieces are bent to form the spring claw 101. The spring claw 101 and the contact body are of an integrally formed structure, which not only reduces the manufacturing cost, but also makes it difficult for the spring claw 101 to fall off. Of course, in other embodiments, the spring claw 101 can also be formed by bending a conductive sheet alone and then welded to the contact body.

[0031] The front end of the contact 1 includes an elastic contact portion and a support portion from front to back. The elastic contact portion is separated into two or more contact elastic pieces 104 by an axial split groove. All the contact elastic pieces 104 are evenly distributed in the circumferential direction and jointly enclose an insertion cavity for the mating pin to insert. An opening hole is formed at the front end of all the contact elastic pieces 104 for the mating pin to insert. The front end portion of each contact elastic piece 104 is bent inward to form a necking structure, and a flared opening is formed at the front end of each contact elastic piece 104. Two radially symmetric fixing holes 103 are provided on the support portion for realizing the relative fixation between the contact 1 and the sheath 2. A notch 102 is opened on the side wall of the contact 1 behind the support portion, and the seal 3 is vulcanized and formed at the notch 102.

[0032] As shown Figures 3-4 in the figure, the sheath 2 is a cylindrical structure formed by winding a conductive strip. The sheath 2 is fixed and formed after winding through a barb structure at its winding joint. The barb structure includes mutually engaged barbs 202 and barb grooves 203. The barbs 202 and the barb grooves 203 are oppositely distributed on both sides of the winding joint. The barbs 202 and the barb grooves 203 are mutually engaged, enabling the sheath 2 to maintain a round shape and achieve fixed forming. The sheath 2 is sleeved on the outer side of the front end of the contact member 1, which can not only enhance the strength of the wound socket, but also enable the front end of the contact member 1, i.e., the plug-in end, to maintain a round shape, cancel the fixing structure at the winding joint of the plug-in end, and reduce the forming difficulty of the contact member 1.

[0033] The front end of the sheath 2 is provided with an auxiliary pressing structure. The auxiliary pressing structure includes at least two inwardly protruding pressing elastic pieces 201 distributed circumferentially along the sheath 2. The pressing elastic pieces 201 are elastic cantilever structures extending in the front-rear direction. Each pressing elastic piece 201 radially presses inward on the contact elastic piece 104 at the front end of the contact member 1, providing an auxiliary pressing force for the contact elastic piece 104, thereby making the connection between the socket and the mating pin more reliable. The pressing elastic piece 201 is a straight piece that is inclined inward from the rear to the front and extends. The rear end of the pressing elastic piece 201 is fixed, and the front end is inclined inward and extends to press on the contact elastic piece 104. The pressing elastic piece 201 adopts a straight piece, which has a simple structure and is convenient for processing and forming. The pressing elastic piece 201 is formed by cutting and bending from the side wall of the sheath 2, with a simple structure and low manufacturing cost. Of course, in other embodiments, the pressing elastic piece 201 can also be other structures, such as a structure similar to the spring claw at the rear end of the contact member 1. The pressing elastic piece 201 is integrally wavy. The rear end of the pressing elastic piece 201 is fixed, and the front end is a suspended free end. The wave crest part is close to the suspended free end, and the wave crest part protrudes inward, for radially pressing inward on the contact elastic piece 104 at the front end of the contact member 1 to provide an auxiliary pressing force for the contact elastic piece 104. In addition, in other embodiments, the auxiliary pressing structure can also adopt other structures, such as a waist-reducing crown belt structure. The waist-reducing crown belt structure includes a plurality of spring pieces distributed at intervals circumferentially. The spring pieces extend in the front-rear direction. The middle part of the spring piece is waist-reduced to form an inwardly protruding part, and the inwardly protruding part is used for radially pressing inward on the contact elastic piece 104 at the front end of the contact member 1.

[0034] There are two positioning claws 204 circumferentially distributed on the sheath 2. The positioning claws 204 extend axially along the sheath 2 and the rear ends are tilted outwards, which are used to achieve the axial positioning and anti-retreat of the rolled jack in the socket housing. There is a stop surface in the socket housing for cooperating with the positioning claws 204. There are two groups of fixing pieces 205 at the rear end of the sheath 2, which are respectively inserted into two fixing holes 103 on the contact member 1. Each group of fixing pieces 205 has two, and the two fixing pieces 205 in the same group are inserted into the same fixing hole 103 to realize the relative fixation of the sheath 2 and the contact member 1. In addition, an anti-misalignment key 206 is also provided on the sheath 2 to achieve the radial positioning of the rolled jack in the socket housing. The rolled jack is integrally fixed to the socket housing through the sheath 2, and the sheath 2 is made of a material with relatively high strength.

[0035] When the rolled jack of the present invention is inserted into the circuit board, a softer insertion force can be provided, the contact retention force between the rolled jack and the connection hole on the circuit board can be improved, the contact is more stable, and the connection between the jack and the circuit board is more reliable.

[0036] The present invention also provides an embodiment of a connector. The connector includes a socket housing and a rolled jack installed in the socket housing. The specific structure of the rolled jack has been introduced in the above embodiment of the rolled jack and will not be repeated here.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present invention should be equally included in the protection scope of the present invention.

Claims

1. A rolled socket, comprising a contact piece (1), the front end of the contact piece (1) being used for mating with a matching pin, characterized in that: At least two outwardly protruding spring claws (101) are distributed along the circumferential direction at the rear end of the contact piece (1); the spring claw (101) is an elastic cantilever structure extending along the front-rear direction; the spring claw (101) has a contact portion for contacting and connecting with a circuit board.

2. The rolled jack according to claim 1, characterized in that: The rear end of the spring claw (101) is fixed, and the front end is a cantilevered free end.

3. The rolled jack according to claim 1, characterized in that: The spring claw (101) is in the shape of a wave, and the wave crest of the spring claw (101) constitutes the contact portion.

4. The rolled jack according to claim 3, characterized in that: The crest of the spring claw (101) is close to the overhanging free end.

5. The rolled socket according to any one of claims 1 to 4, characterized in that: The spring claw (101) is formed by bending a suspended piece formed by cutting a contact member body.

6. The rolled jack according to any one of claims 1 to 4, characterized in that: The rolled socket further comprises a sheath (2), the sheath (2) being sleeved on the outside of the front end of the contact piece (1), the front end of the contact piece (1) comprising an elastic contact portion and a support portion from front to back, the elastic contact portion having at least two contact springs (104) distributed along the circumferential direction, the portion of each contact spring (104) close to the front end being bent inwardly to form a necking structure, all the contact springs (104) together forming an insertion cavity for the adapter pin to be inserted, an auxiliary clamping structure being provided at the front end of the sheath (2), the auxiliary clamping structure being radially inwardly clamped on the contact springs (104).

7. The rolled socket according to claim 6, characterized in that: The auxiliary pressing structure comprises at least two inwardly protruding pressing springs (201) distributed along the circumference of the sheath (2), the pressing springs (201) being elastic cantilever structures extending along the front-rear direction, and each pressing spring (201) is radially inwardly pressed on the contact spring (104).

8. The rolled socket according to claim 7, characterized in that: The rear end of the compression spring (201) is fixed, and the front end is tilted and cantilevered inwards.

9. A connector comprising a socket housing and a rolled jack mounted in the socket housing, characterized in that: The rolled socket is the rolled socket as described in any one of claims 1-8.

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