A sliding multi-core direct-plug power connector assembly

Abstract

This invention relates to a sliding multi-core direct-plug power connector assembly, comprising a wall socket, a first plug for mating with one end of the wall socket, and a second plug for mating with the other end of the wall socket. The wall socket has an extra-long socket, the first plug has a short pin, and the second plug has an extra-long pin. The wall socket and the second plug slide and engage axially. The wall socket switches between an engaged and disengaged state with the first plug as it moves axially. In the disengaged state, the extra-long socket engages and conducts with the extra-long pin; in the engaged state, both the short pin and the extra-long pin engage and conduct with the extra-long socket. This invention, through the mutually sliding contact and conduction of the extra-long socket and extra-long pin, ensures that the wall socket can engage with the second plug before mating, and that the wall socket can simultaneously connect and conduct with both the first and second plugs after mating, thus increasing the mating length of the connector.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and specifically relates to a sliding multi-core direct-plug power connector assembly. Background Technology

[0002] Typically, the mating distance between the plug and socket of a circular connector assembly is less than 30mm when they are inserted and removed. This is insufficient to meet situations where the plug and socket need to move a greater distance to achieve proper insertion or removal. If wires are used for direct connection, the internal arrangement of the wires will be messy when there are many cores, making it difficult to avoid tangling. Furthermore, there is insufficient space for the wires within the connector, and the wires are easily bent and worn during insertion and removal. It is evident that this connection method is unstable and prone to causing connector performance degradation or failure, which is detrimental to the miniaturization design of connectors. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention proposes a sliding multi-core direct-plug power connector assembly.

[0004] The objective of this invention and the technical problem it solves are achieved by the following technical solution. A sliding multi-core direct-plug power connector assembly according to this invention includes a wall socket, a first plug for engaging with one end of the wall socket, and a second plug for engaging with the other end of the wall socket. The wall socket has an extra-long socket, the first plug has a short pin, and the second plug has an extra-long pin. The wall socket and the second plug are slidably engaged along the axial direction. When the wall socket moves axially, it switches between an engaged state and a disengaged state with the first plug. In the disengaged state, the extra-long socket engages and conducts with the extra-long pin; in the engaged state, both the short pin and the extra-long pin engage and conduct with the corresponding ends of the extra-long socket.

[0005] Furthermore, the extra-long socket includes a middle rod, a first socket component located at one end of the middle rod, and a second socket component located at the other end of the middle rod. The middle rod is hollow. The first socket component includes a first socket body for engaging with a short pin, and the second socket component includes a second socket body for engaging with an extra-long pin. When the first plug is separated from the wall socket, the extra-long pin engages with the middle rod and makes contact.

[0006] Furthermore, the front end of the first socket body has a first elastic socket that mates with a short pin; the front end of the second socket body has a second elastic socket that mates with an extra-long pin.

[0007] Furthermore, the first socket component also includes a first sheath sleeved on the outer side of the front end of the first socket body, and the second socket component includes a second sheath sleeved on the outer side of the front end of the second socket body. The first sheath circumferentially covers the first elastic socket, and the second sheath circumferentially covers the second elastic socket.

[0008] Furthermore, both the first and second sheaths are fixed to the corresponding socket body by point crimping.

[0009] Furthermore, the rear end of the first socket body is divided by an axial slot into at least two circumferentially distributed first strong-fitting spring pieces, which form a first mounting hole that is strongly fitted to the corresponding end of the intermediate rod; the rear end of the second socket body is divided by an axial slot into at least two circumferentially distributed second strong-fitting spring pieces, which form a second mounting hole that is strongly fitted to the corresponding end of the intermediate rod.

[0010] Furthermore, the rear ends of both the first and second reinforcing springs are provided with a first guide angle that mates with the corresponding ends of the intermediate rod, and the outer edges of both ends of the intermediate rod are provided with a second guide angle.

[0011] Furthermore, the first plug includes a first plug housing, a first plug insulator disposed within the first plug housing, and the short pin disposed within the first plug insulator; the wall socket includes a socket housing, a socket insulator disposed within the socket housing, and the extra-long socket disposed within the socket insulator; the second plug includes a second plug housing, a second plug insulator disposed within the second plug housing, and the extra-long pin disposed within the second plug insulator; the socket housing and the second plug housing are axially sealed and slidingly fitted.

[0012] Furthermore, a sealing ring is provided between the socket housing and the second plug housing. The sealing ring is used to maintain the seal between the socket housing and the second plug housing when the socket housing moves axially.

[0013] Furthermore, the second plug housing is provided with a limiting end face that axially stops the socket housing.

[0014] By employing the above technical solution, this invention designs an extra-long socket assembled in the wall socket and an extra-long pin installed in the second plug, ensuring that the wall socket can be inserted with the second plug before insertion, and that the wall socket can be connected and conductive with both the first and second plugs simultaneously after insertion. Since ordinary processing technology cannot meet the production requirements of extra-long contact components, this invention adopts a three-segment connection method to ensure the length of the extra-long socket. Through the design of the three-segment extra-long socket, the insertion length of the connector head is greatly increased, while maintaining good sealing performance and miniaturization of the connector assembly.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external shape of the first plug in this invention.

[0017] Figure 2 This is a side view of the first plug in this invention.

[0018] Figure 3 This is a schematic diagram of the through-wall socket in this invention.

[0019] Figure 4 This is a side view of the through-wall socket in this invention.

[0020] Figure 5 This is a schematic diagram of the shape of the second plug in this invention.

[0021] Figure 6 This is a side view of the second plug in this invention.

[0022] Figure 7 This is a schematic diagram showing the appearance of the first plug, the wall socket, and the second plug in their initial state in this invention.

[0023] Figure 8 This is a schematic diagram showing the appearance of the first plug, the wall socket, and the second plug in the working state of this invention.

[0024] Figure 9 This is a cross-sectional structural diagram of the first plug, the wall socket, and the second plug in the initial state of the present invention.

[0025] Figure 10 This is a cross-sectional structural diagram of the first plug, the wall socket, and the second plug in the present invention when they are in working condition.

[0026] Figure 11 This is a schematic diagram of the extra-long socket in this invention.

[0027] Figure 12 This is a schematic diagram of the structure of the extra-long insert in this invention.

[0028] Figure 13 This is a schematic diagram of the short pin structure in this invention.

[0029] Figure 14 This is a schematic diagram of the forced fit between the first insertion hole component and the intermediate rod in this invention. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0031] like Figures 1 to 14 An embodiment of a sliding multi-core pluggable power connector assembly includes a first plug 1, a wall socket 2, and a second plug 3. The first plug 1 is used to plug into one end of the wall socket 2, and the second plug 3 is used to plug into the other end of the wall socket 2. The wall socket enables electrical connection between the first plug and the second plug. In this embodiment, the ends of the first plug / second plug that are plugged into the corresponding ends of the wall socket are considered their respective front ends. The first plug 1 includes a first plug housing 11, a first plug insulator 12 disposed within the first plug housing, and short pins 13 disposed within the first plug insulator. The wall socket 2 includes a socket housing 21, a socket insulator 22 disposed within the socket housing, and an extra-long socket 23 disposed within the socket insulator. The second plug 3 includes a second plug housing 31, a second plug insulator 32 disposed within the second plug housing, and extra-long pins 33 disposed within the second plug insulator. The short pin 13 is used to engage with one end of the extra-long socket 23, and the other end of the extra-long socket 23 is used to engage with the extra-long pin 33. The socket housing and the second plug housing are in a guide sliding fit.

[0032] The extra-long socket 23 includes a central rod 231, a first socket component located at one end of the central rod, and a second socket component located at the other end of the central rod. The central rod has a hollow rod-like structure and communicates with the second socket component to facilitate the insertion of an extra-long pin. The first socket component includes a first socket body 232 and a first sheath 233. The front end of the first socket body 232 has a first elastic socket 2321 that engages with the short pin 13. The first sheath 233 is fitted onto the front end of the first socket body 232 and circumferentially surrounds the first elastic socket, providing a contact holding force between the first elastic socket and the short pin in the engaged state and protecting the first elastic socket. The rear end of the first socket body 232 is divided by an axial slot 234 into at least two circumferentially distributed first force-fitting spring pieces 2322. These at least two spring pieces 2322 form a first mounting hole 235 for force-fitting with the corresponding end of the intermediate rod. The first mounting hole enables force-fitting positioning of the first socket component. The axial slot 234 makes the force-fitting more secure and reliable, avoiding stress concentration. The second socket component includes a second socket body 236 and a second sheath 237. The front end of the second socket body has a second elastic socket 2361 for insertion into the extra-long pin. The second sheath 237 is fitted onto the front end of the second socket body and circumferentially wraps around the second elastic socket. The rear end of the second socket body is also divided by an axial slot 234 into at least two circumferentially distributed second force-fitting spring pieces 2362. These spring pieces form a second mounting hole 238 for force-fitting with the intermediate rod. Since the first and second mounting holes are elastic positioning holes, rapid assembly of the corresponding socket components can be achieved. Special tooling should be used when assembling the extra-long sockets. Damage to the front mating holes of the first and second socket components, and damage to the plating of any parts, are strictly prohibited to avoid affecting socket performance. After assembly, ensure that each socket component cannot move along the central axis of the intermediate rod. After assembly, use the matching long pin to test the connection from the second socket component to the bottom of the extra-long socket; it should move smoothly without any resistance. Both the first and second elastic sockets are socket structures formed by multiple contact springs distributed circumferentially by axially extending slots, ensuring stable contact and conductivity. This invention, through the design of a three-section extra-long socket, significantly increases the mating length between the head and the base.

[0033] Combination Figure 14Preferably, to facilitate the forced installation of the first and second socket components, a first guide angle 239 is provided at the rear end of both the first and second forced installation springs to cooperate with the end of the intermediate rod, and a second guide angle 2310 is provided at the outer edges of both ends of the intermediate rod. Furthermore, a limiting step 2311 is provided on the outer circumferential surface of each end of the intermediate rod 231. The limiting step cooperates with the axial stop of the rear end of the corresponding socket component, limiting the axial installation position of the corresponding socket component. Simultaneously, the height of the limiting step is approximately equal to the thickness of the corresponding sheath, preventing an increase in the radial dimension of the extra-long socket and ensuring the axial consistency of the outer circumferential surface of the extra-long socket, which is beneficial for the positioning of the extra-long socket with the socket insulator. In this embodiment, both the first and second sheaths are fixed to the corresponding socket body by point-pressing. At this time, a point-pressing groove is provided on the outer circumferential surface of the front end of each socket body. After pressing, the point-pressing portion formed on the first / second sheath will be recessed into the corresponding point-pressing groove to achieve the pressing and fixing of each sheath.

[0034] Combination Figure 12 The front end of the extra-long pin 33 is a pin portion 331, which has a mating contact relationship with both the second elastic socket and the intermediate rod. Preferably, to improve the contact stability between the pin holes, the front end of the pin portion is enlarged to form a large-diameter section 3311, the outer diameter of which is larger than the rear end of the pin portion 331. The rear end of the pin portion 331 is connected to an extra-long pin fixing portion 332, which is positioned relative to the second plug insulator via a step. The fixing portion of the short pin also cooperates with the step of the first plug insulator to achieve contact positioning. The rear ends of both the short pin and the extra-long pin are connection portions for connecting the corresponding wires. In addition, the extra-long socket has a positioning step 2312 on the outer circumferential surface at both ends. The positioning steps are specifically set on the socket body, and the positioning steps 2312 cooperate with the corresponding steps on the socket insulator to achieve positioning of the extra-long socket.

[0035] Furthermore, the second plug housing 31 is provided with a limiting end face 311. When the wall socket and the second plug are fully engaged, the socket housing presses against the limiting end face, at which point the extra-long pin is inserted to the deepest point of the extra-long socket (e.g., Figure 9 ).

[0036] In this embodiment, the first plug is mounted on device A via eight floating bushings, allowing for a floating range of ±1mm in the radial X and Y directions. A wall socket is mounted on device B, and the second plug is mounted on device C. When not in operation, devices A and B are separated by a cover plate; when in operation, the cover plate is opened. The wall socket can be radially fixed to the mounting panel of device B using mounting nuts fitted on its outer side. After the wall socket and the second plug are fully engaged, the second plug is also radially fixed to the mounting panel of device C using corresponding mounting nuts.

[0037] like Figure 7 and Figure 10 As shown, in the initial state, the system is not powered on, the wall socket and the second plug are inserted together, the front end of the socket housing is pressed against the limiting end face, and the socket housing and the second plug housing are sealed by the sealing ring 34. The wall socket and the first plug are separated. Taking the wall socket as an example that it can slide 100mm±2mm axially relative to the second plug, the distance between the wall socket and the first plug is 75±2mm, that is, H1=75±2mm.

[0038] When the system starts working, the wall socket moves towards the side where the first plug is located under the hydraulic power of device B. After sliding 100±2mm, the wall socket is fully engaged with the first plug, and the two are in the engaged state. At this time, if... Figure 8 and Figure 10 As shown, the wall socket is recessed into the first plug housing by 25±2mm, i.e., the insertion depth H2=25±2mm, and the short pin engages with the first socket component at one end of the extra-long socket. Simultaneously, the wall socket remains connected to the second plug, meaning the second socket component and the extra-long pin remain in contact and conductive. The socket housing and the second plug housing are still sealed by the sealing ring 34. Then, the system begins supplying power from the side where the second plug is located to the side where the first plug is located, thus establishing the electrical connection of the entire system.

[0039] When the machine stops, the power supply system is cut off, and the wall socket moves towards the second plug under the hydraulic power of device B, that is, it retracts 100±2mm to return to the initial position. The stroke ends and the system resets.

[0040] In this embodiment, as Figure 2 , Figure 4 and Figure 6 The first plug has 32 short pins, the wall socket has 32 extra-long sockets, and the second plug has 32 extra-long pins, together forming a 32-pin direct-plug power connector assembly. However, in other embodiments, the number of contacts inside each connector is not limited. Furthermore, the first plug, wall socket, and second plug all use mutually compatible circular connectors; in other embodiments, rectangular connectors or other types of connectors capable of axial direct plugging can also be used.

[0041] In this embodiment, the axial sliding stroke between the wall socket and the second plug is 100mm (with an error of ±2mm) as an example for illustration; however, in other embodiments, the relative axial sliding stroke of the two can be adaptively changed and designed, and the present invention does not limit this.

[0042] In this embodiment, the inner hole of the second socket body is provided through along the axial direction; the corresponding holes at the front and rear ends of the first socket body are arranged separately to maintain the sealing of the through-wall socket and the second plug.

[0043] In this embodiment, the first sheath and the second sheath are connected to the corresponding socket body by point pressing. In other embodiments, welding, threaded connection, snap-fit ​​connection, etc. can also be used.

[0044] It is worth noting that the short pin is shorter than the extra-long socket; the extra-long socket and the extra-long pin are longer than the corresponding contacts in connectors of the same or similar size in the prior art, so as to ensure that the wall socket and the second plug can slide a long distance relative to each other axially and still maintain contact with the second plug when plugging and unplugging the first plug; the present invention does not limit the specific length of each contact.

[0045] Examples of extra-long contact elements:

[0046] Combination Figures 9 to 14 As shown, the extra-long contact includes a short pin, an extra-long socket, and an extra-long pin. The extra-long socket is installed inside a wall socket. The short pin is installed inside a first plug that engages with one end of the wall socket. The extra-long pin is installed inside a second plug that engages with one end of the wall socket. The second plug and the wall socket have an axial sliding contact. When the wall socket is separated from the first plug, the extra-long socket and the extra-long pin are engaged and conductive. When the wall socket and the first plug are engaged, the extra-long socket and the short pin are engaged and conductive. Furthermore, the extra-long socket inside the wall socket is still engaged and conductive with the extra-long pin inside the second plug; that is, the front end of the extra-long pin is elastically engaged and conductive with the second socket component. The structure and working principle of the short pin, extra-long socket, and extra-long pin are the same as those in the above-described sliding multi-core direct-plug power connector assembly embodiment, and will not be repeated here.

[0047] The above description is merely a preferred embodiment of the present invention, and all aspects not detailed herein are existing technologies. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A sliding multi-core direct-plug power connector assembly, comprising a wall socket, a first plug for mating with one end of the wall socket, and a second plug for mating with the other end of the wall socket, characterized in that: The wall socket has an extra-long socket, a first plug has a short pin, and a second plug has an extra-long pin. The wall socket and the second plug are slidably connected along the axial direction. The wall socket switches between an engaged state and a disengaged state with the first plug when it moves axially. In the disengaged state, the extra-long socket and the extra-long pin are engaged and conductive. In the engaged state, both the short pin and the extra-long pin are engaged and conductive with the extra-long socket. The extra-long socket includes a central rod, a first socket component at one end of the central rod, and a second socket component at the other end of the central rod. The central rod is hollow. The first socket component includes... The first socket body is used for mating with short pins, and the second socket component includes a second socket body for mating with extra-long pins. When the first plug and the wall socket are separated, the extra-long pins are engaged and connected with the intermediate rod. The rear end of the first socket body is divided by an axial slot into at least two circumferentially distributed first strong-fitting springs, which form a first mounting hole that is strongly fitted with the corresponding end of the intermediate rod. The rear end of the second socket body is divided by an axial slot into at least two circumferentially distributed second strong-fitting springs, which form a second mounting hole that is strongly fitted with the corresponding end of the intermediate rod.

2. The sliding multi-core direct-plug power connector assembly according to claim 1, characterized in that: The front end of the first socket body has a first elastic socket that mates with a short pin; the front end of the second socket body has a second elastic socket that mates with an extra-long pin.

3. The sliding multi-core direct-plug power connector assembly according to claim 2, characterized in that: The first socket component also includes a first sheath sleeved on the outer side of the front end of the first socket body, and the second socket component includes a second sheath sleeved on the outer side of the front end of the second socket body. The first sheath circumferentially covers the first elastic socket, and the second sheath circumferentially covers the second elastic socket.

4. The sliding multi-core direct-plug power connector assembly according to claim 3, characterized in that: Both the first and second sheaths are fixed to the corresponding socket body by point crimping.

5. The sliding multi-core direct-plug power connector assembly according to claim 1, characterized in that: The rear ends of both the first and second reinforcing springs are provided with a first guide angle that mates with the corresponding end of the intermediate rod, and the outer edges of both ends of the intermediate rod are provided with a second guide angle.

6. The sliding multi-core direct-plug power connector assembly according to claim 1, characterized in that: The first plug includes a first plug housing, a first plug insulator disposed within the first plug housing, and the short pin disposed within the first plug insulator; the through-wall socket includes a socket housing, a socket insulator disposed within the socket housing, and the extra-long socket disposed within the socket insulator. The second plug includes a second plug housing, a second plug insulator disposed within the second plug housing, and the extra-long pin disposed within the second plug insulator; the socket housing and the second plug housing are axially sealed and slidingly fitted.

7. The sliding multi-core direct-plug power connector assembly according to claim 6, characterized in that: A sealing ring is provided between the socket housing and the second plug housing. The sealing ring is used to maintain the seal between the socket housing and the second plug housing when the socket housing moves axially.

8. The sliding multi-core direct-plug power connector assembly according to claim 5, characterized in that: The second plug housing has a limiting end face that axially stops the socket housing.

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