Hot plug connector and plugging and unplugging method therefor

Abstract

A hot plug connector and a plugging and unplugging method therefor. The hot plug connector comprises a plug (1), a plugging housing (2), and a mating housing (3). The plug (1) is internally provided with a plurality of long pins (11) and a plurality of short pins (12), the mating housing (3) is provided with mating sleeves (4), and the mating housing (3) is provided with a limiting portion, wherein the plugging housing (2) has a first movement state and a second movement state; in the first movement state, the plugging housing (2) drives the plug (1) to be partially inserted into the mating housing (3) at a first speed, such that the long pins (11) are in mating engagement with the mating sleeves (4); and in the second movement state, the plugging housing (2) cooperates with the limiting portion to drive the plug (1) to be completely inserted into the mating housing (3) at a second speed, such that the short pins (12) are in mating engagement with the mating sleeves (4), the second speed being less than the first speed.

Description

Hot plug connector and hot plug connector plugging method

[0001] The present application claims priority to the Chinese patent application No. 202411237390.4, filed on September 04, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electrical connectors, for example to a hot plug connector and a hot plug connector plugging method. BACKGROUND

[0003] In the use of connectors, the plugging operation in the live state is easy to cause problems, of which the most notable is the generation of electric arc. Due to the instantaneous separation or contact between the plug and the socket in the live state, a small gap between the electrodes will generate a strong electric field, causing air ionization and thus triggering an electric arc. The electric arc has high temperature characteristics, which not only easily burns out electrical components, but also can cause electrical fires. Therefore, when designing and using connectors, the generation and protection of electric arcs must be fully considered.

[0004] In the related art, the pins of the connector are provided as long pins and short pins, and the long pins and the short pins are sequentially contacted or separated from the socket during plugging to reduce the possibility of generating electric arc during the plugging process.

[0005] However, the design of long pins and short pins can only separate the electrodes in a limited space, and when the plugging speed is fast, the time interval of the long pins and the short pins contacting or separating from the socket is short, and electric arc is still easy to generate during the plugging process. SUMMARY

[0006] The present application provides a hot plug connector and a hot plug connector plugging method, which solves the problem that electric arc is easy to generate during the plugging process of the connector.

[0007] The present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a hot plug connector, comprising:

[0009] a plug, the plug having a plurality of long pins and a plurality of short pins inside;

[0010] a plugging shell arranged outside the plug and forming a plugging cavity between the outer wall of the plug and the plugging shell;

[0011] a plugging shell inserted into the plugging cavity and having a plugging sleeve for plugging and cooperating with the long pins and the short pins, the plugging shell being provided with a limiting portion for sliding connection of the plugging shell;

[0012] The plug shell has a first moving state and a second moving state. In the first moving state, the plug shell drives the plug to partially insert into the plug shell at a first speed and enables the long needle to be plugged with the plug sleeve. In the second moving state, the plug shell cooperates with the limiting part to drive the plug to fully insert into the plug shell at a second speed and enables the short needle to be plugged with the plug sleeve. The second speed is less than the first speed.

[0013] In some embodiments, the plug shell is rotationally connected with the plug, the limiting part is a plug pin protruding outside the plug shell, and the plug shell is provided with a sliding groove in sliding cooperation with the plug pin. The sliding groove extends spirally along the axial direction of the plug shell, so that the second moving state is a rotating state.

[0014] In some embodiments, the plug shell is rotationally connected with the plug, the limiting part is a sliding groove provided outside the plug shell, and the plug shell is provided with a plug pin in sliding cooperation with the sliding groove. The sliding groove extends spirally along the axial direction of the plug shell, so that the second moving state is a rotating state.

[0015] In some embodiments, the sliding groove has a first end for the plug pin to slide into and a second end that is curved to form a clamping hole for clamping the plug pin.

[0016] In some embodiments, the end of the plug shell away from the plug shell is provided with a screw ring, and the outer wall of the screw ring is provided with friction lines.

[0017] In some embodiments, the plug sleeve comprises:

[0018] a first sleeve;

[0019] and a second sleeve provided in the first sleeve and plugged with the long needle or the short needle.

[0020] In some embodiments, the first sleeve is made of an arc-resistant material, and the second sleeve is made of an electrically conductive elastic material.

[0021] In some embodiments, the length of the first sleeve is greater than the length of the second sleeve.

[0022] In some embodiments, the cross-sectional area of the second sleeve decreases in the direction of insertion of the long needle.

[0023] In a second aspect, the application further provides a plug method for a hot plug connector, which is applied to plug the hot plug connector in any one of the first aspect. The plug method comprises:

[0024] In the plugging, the plug-in shell is controlled to pass through the first moving state and the second moving state in sequence, so that the long needle in the plug is plugged with the plug-in sleeve at the first speed, and the short needle in the plug is plugged with the plug-in sleeve at the second speed.

[0025] In the unplugging, the plug-in shell is controlled to pass through the second moving state and the first moving state in sequence, so that the short needle in the plug is plugged with the plug-in sleeve at the second speed, and the long needle in the plug is plugged with the plug-in sleeve at the first speed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is an exploded structural schematic diagram of the hot plug connector in the embodiment of the present application;

[0027] Fig. 2 is a structural schematic diagram of the plug-in shell of the hot plug connector in the embodiment of the present application.

[0028] In the figure: 1, plug; 11, long needle; 12, short needle; 2, plug-in shell; 3, plug-in shell; 4, plug-in sleeve; 41, first sleeve; 42, second sleeve; 5, plug-in pin; 6, slide; 61, card hole; 8, screw ring. DETAILED DESCRIPTION

[0029] The present application will be described in detail below with reference to the drawings and embodiments, and the specific embodiments described herein are used to explain the present application. For ease of description, only the parts related to the present application are shown in the drawings, not all structures.

[0030] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first feature and the second feature are in direct contact, or that the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0033] The present application discloses a hot plug connector and a plugging method for the hot plug connector.

[0034] Referring to FIGS. 1 and 2, the hot plug connector includes a plug 1, a plug shell 2, and a plug-in shell 3. The plug 1 has a plurality of long pins 11 and a plurality of short pins 12 inside; the plug shell 2 is arranged outside the plug 1 and forms a plug-in cavity between the outer wall of the plug 1 and the plug shell 2; the plug-in shell 3 is inserted into the plug-in cavity and has a plug-in sleeve 4 that is plugged and matched with the long pins 11 and the short pins 12, and the plug-in shell 3 is provided with a limiting portion that is slidingly connected with the plug shell 2; wherein the plug shell 2 has a first moving state and a second moving state, in the first moving state, the plug shell 2 drives the plug 1 to be partially inserted into the plug-in shell 3 at a first speed and makes the long pins 11 plugged and matched with the plug-in sleeve 4, in the second moving state, the plug shell 2 cooperates with the limiting portion to drive the plug 1 to be fully inserted into the plug-in shell 3 at a second speed and makes the short pins 12 plugged with the plug-in sleeve 4, and the second speed is less than the first speed.

[0035] Exemplarily, one end of the plug 1 is open, the other end is closed, the long pins 11 and the short pins 12 are arranged at the closed end, and the number of the long pins 11 and the short pins 12 can be designed according to the actual required connected circuit. The long pins 11 and the short pins 12 both extend towards the open side, and the length of the short pins 12 can be less than or equal to half of the length of the long pins 11, so that the head end of the long pins 11 and the head end of the short pins 12 maintain sufficient spacing.

[0036] The plug shell 2 is sleeved outside the plug 1, and the plug shell 2 is connected with the closed end of the plug 1, which can be fixed connection or rotary connection. The inner wall of the plug shell 2 and the outer wall of the plug 1 form the above-mentioned plug-in cavity, the width of the plug-in cavity is greater than the thickness of the plug-in shell 3, the inner diameter of the plug-in shell 3 is greater than the outer diameter of the plug 1, and the outer diameter of the plug-in shell 3 is less than or equal to the inner diameter of the plug shell 2, so as to facilitate the plug-in shell 3 to be smoothly inserted into the plug-in cavity.

[0037] The plug-in sleeve 4 is arranged in the plug-in shell 3, and each long pin 11 and each short pin 12 corresponds to one plug-in sleeve 4, and the depths of the plurality of plug-in sleeves 4 in the plug-in shell 3 are the same, that is, the interval between the long pins 11 inserted into the plug-in sleeve 4 and the short pins 12 inserted into the plug-in sleeve 4 only depends on the length difference between the long pins 11 and the short pins 12 and the speed of the plug 1 inserted into the plug-in shell 3.

[0038] When the long pins 11 are inserted into the plug-in sleeves 4, the plug shell 2 is directly pushed to approach the plug-in shell 3, and when the plug-in shell 3 is inserted into the plug-in cavity, the plug 1 is also inserted into the plug-in shell 3 synchronously. At this time, the plug shell 2 drives the plug 1 to be quickly inserted into the plug-in shell 3 in the first moving state, so that the long pins 11 are quickly inserted into the corresponding plug-in sleeves 4. Meanwhile, the limiting part provided on the outer sidewall of the plug-in shell 3 cooperates with the plug shell 2, and a resistance is formed between the limiting part and the plug shell 2 to slow down the insertion speed of the plug 1 and the plug-in shell 3, so that the plug shell 2 enters the second moving state, and the plug shell 2 pushes the plug 1 to be completely inserted into the plug-in shell 3 at a second speed lower than the first speed, so as to complete the insertion of the short pins 12 into the plug-in sleeves 4.

[0039] The limiting part can be a sliding block and cooperate with a curved and extended sliding groove 6 to achieve the first moving state of axial movement along the plug-in shell 3 and the second moving state of rotary movement. The limiting part can also be an elastic pad, which can generate a resistance to the movement of the plug shell 2 when cooperating with the plug shell 2. At this time, the first moving state and the second moving state are both axial movements along the plug-in shell 3, but the moving speeds are different.

[0040] During the insertion of the long pins 11 into the plug-in sleeves 4, the plug shell 2 approaches the plug-in shell 3 in the first moving state, and the plug 1 is inserted into the plug-in shell 3 at a first speed. The plug-in shell 3 is also inserted into the plug-in cavity synchronously. Since the first speed is fast, the multiple long pins 11 in the plug 1 can be quickly inserted into the plug-in sleeves 4. When the long pins 11 are inserted to a specified depth, the limiting part can cooperate with the plug shell 2 to switch the plug shell 2 from the first moving state to the second moving state, so as to drive the plug 1 to continue to be inserted into the plug-in shell 3 at a second speed slower than the first speed, until the plug 1 is completely inserted into the plug-in shell 3, and the short pins 12 are also completely inserted into the corresponding plug-in sleeves 4. When the plug 1 is pulled out of the plug-in shell 3, the plug shell 2 first enters the second moving state and then enters the first moving state, so that the plug 1 can be smoothly pulled out. Therefore, when the hot plug connector is used, the long pins 11 and the short pins 12 can be inserted into the plug-in sleeves 4 at different speeds during the insertion and pulling out of the plug 1 and the plug-in shell 3, and the insertion speed of the short pins 12 is slower, so that, in addition to the interval formed by the long pins 11 and the short pins 12 in space, the time interval of the insertion and pulling out of the long pins 11 and the short pins 12 and the plug-in sleeves 4 is also long, which effectively reduces the possibility of arc generated during the insertion and pulling out.

[0041] In an embodiment, the plug shell 2 is rotationally connected with the plug 1, the limiting part is a plug-in pin 5 protruding on the outer side of the plug-in shell 3, and the plug shell 2 is provided with a sliding groove 6 slidably cooperating with the plug-in pin 5. The sliding groove 6 extends spirally along the axial direction of the plug shell 2, so that the second moving state is a rotary state.

[0042] In another embodiment, the plug shell 2 is rotationally connected with the plug 1, and the limiting part is a slide 6 formed on the outer side of the plug shell 3, which extends helically along the axial direction of the plug shell 3, and the plug shell 2 is provided with a plug pin 5 which is in sliding fit with the slide 6, so that the second movement state of the plug shell 2 is a rotating state.

[0043] Exemplarily, the plug shell 2 and the plug shell 3 are both cylindrical, and the slide 6 is formed on either one of them and extends helically along the plug direction of the two, while the plug pin 5 is formed on the other one, which can be cylindrical and can slide along the helically extending slide 6, so that the second movement state of the plug shell 2 is a rotating state.

[0044] By rotationally connecting the plug shell 2 with the plug 1, after the long needle 11 is inserted into the designated position, the plug pin 5 will abut against the side wall of the slide 6, thereby preventing the movement of the plug shell 2, at this time, rotating the plug shell 2, the plug pin 5 slides and extrudes the side wall of the slide 6, which can continue to drive the plug 1 to approach the plug shell 3, so that the plug 1 can be inserted into the plug shell 3 at the second speed. The shape of the specific limiting part can be designed according to the actual plug-in stroke.

[0045] In some embodiments, a screw ring 8 is arranged at the end of the plug shell 2 away from the plug shell 3, and the screw ring 8 is fixedly connected with the plug shell 2, and the fixing mode can be adhesion or one-piece forming, and friction lines can also be arranged on the outer side wall of the screw ring 8 to facilitate the gripping and screwing of the screw ring 8.

[0046] In some embodiments, the slide 6 has a first end for the plug pin 5 to slide into and a second end which is bent to form a clamping hole 61 for clamping the plug pin 5.

[0047] In some embodiments, the first end of the slide 6 is in the form of an opening to facilitate the smooth insertion of the plug pin 5 into the slide 6, and the second end can extend along the plug direction of the plug shell 2 and the plug shell 3 to form the clamping hole 61, and the connection between the clamping hole 61 and the slide 6 can be a clamping side wall which can abut against the plug pin 5 to limit the movement of the plug shell 2.

[0048] In this way, when the plug pin 5 slides from the first end to the second end, the plug pin 5 will fall into the clamping hole 61 to form a clamping, thereby automatically locking the plug shell 2 to reduce the possibility of accidental contact of the plug shell 2.

[0049] In some embodiments, the plug pin 5 and the slide 6 can be arranged in one group or multiple groups at intervals. In this embodiment, the plug pin 5 and the slide 6 are arranged in two groups respectively on the opposite sides of the plug shell 2.

[0050] In some embodiments, the plug sleeve 4 comprises a first sleeve 41 and a second sleeve 42. The second sleeve 42 is arranged in the first sleeve 41 and is plugged with the long pin 11 or the short pin 12.

[0051] In some embodiments, the first sleeve 41 and the second sleeve 42 are arranged such that the plug sleeve 4 forms a double-layer sleeve structure. Different materials can be selected according to actual application scenarios, and the sizes of the first sleeve 41 and the second sleeve 42 can also be different, so that the performance of the plug sleeve 4 as a whole is improved. In this embodiment, the first sleeve 41 is made of arc-resistant material, such as tungsten-copper alloy, and the second sleeve 42 is made of conductive elastic material, such as beryllium-copper alloy. The length of the first sleeve 41 is greater than the length of the second sleeve 42. The cross-sectional area of the second sleeve 42 decreases along the insertion direction of the long pin 11.

[0052] In this way, the plug sleeve 4 of the double-layer sleeve structure can not only combine the advantages of the two materials, but also ensure that sufficient contact pressure is formed when the long pin 11 or the short pin 12 is plugged. The first sleeve 41 and the second sleeve 42 are arranged to have different lengths, so that the long pin 11 or the short pin 12 can be first plugged into the first sleeve 41 to guide the subsequent plugging. The cross-sectional area of the second sleeve 42 decreases, so that the cross-sectional area of the insertion end of the second sleeve 42 is larger. When the long pin 11 and the short pin 12 are inserted from the insertion end, they will form sufficient contact with the other end. When they are pulled out, they can be separated from the second sleeve 42 in advance, thereby effectively reducing the possibility of arc at the insertion end of the second sleeve 42.

[0053] The hot plug connector plugging method is applied to the plugging of the hot plug connector in the above embodiments, and comprises:

[0054] When plugging, the plug-in shell 2 is controlled to pass through the first moving state and the second moving state in sequence, so that the long pin 11 in the plug 1 is plugged and matched with the plug sleeve 4 at a first speed, and the short pin 12 in the plug 1 is plugged and matched with the plug sleeve 4 at a second speed.

[0055] When pulling out, the plug-in shell 2 is controlled to pass through the second moving state and the first moving state in sequence, so that the short pin 12 in the plug 1 is plugged and matched with the plug sleeve 4 at a second speed, and the long pin 11 in the plug 1 is plugged and matched with the plug sleeve 4 at a first speed.

[0056] The hot plug connector uses a plug method to complete the plug of the plug 1 and the plug shell 3 through the plug shell 2 in turn through the first moving state and the second moving state, and completes the disengagement of the plug 1 and the plug shell 3 through the plug shell 2 in turn through the second moving state and the first moving state, so that the long needle 11 and the short needle 12 complete the plug at different speeds, thereby effectively ensuring that the plug interval of the two meets the demand, thereby effectively reducing the possibility of arc generated in the plug process.

Claims

1. A hot plug connector, comprising: a plug (1) having a plurality of long pins (11) and a plurality of short pins (12) inside; a plug shell (2) arranged outside the plug (1) and forming a plug cavity between the plug (1) and the outer wall of the plug shell (2); a plug-in shell (3) inserted into the plug cavity and having a plug sleeve (4) for plug-in cooperation with the long pins (11) and the short pins (12), the plug-in shell (3) being provided with a limiting portion for sliding connection of the plug shell (2); wherein the plug shell (2) has a first moving state and a second moving state, in the first moving state, the plug shell (2) drives the plug (1) to partially insert into the plug-in shell (3) at a first speed and makes the long pins (11) plug-in cooperate with the plug sleeve (4), in the second moving state, the plug shell (2) cooperates with the limiting portion to drive the plug (1) to fully insert into the plug-in shell (3) at a second speed and makes the short pins (12) plug-in with the plug sleeve (4), the second speed is less than the first speed.

2. The hot plug connector of claim 1, wherein, The plug shell (2) is rotationally connected with the plug (1), the limiting portion is a plug-in pin (5) protruding outside the plug-in shell (3), the plug shell (2) is provided with a slide way (6) for sliding cooperation with the plug-in pin (5), the slide way (6) extends helically along the axial direction of the plug shell (2) to make the second moving state be a rotating state.

3. The hot plug connector of claim 1, wherein, The plug shell (2) is rotationally connected with the plug (1), the limiting portion is a slide way (6) formed outside the plug-in shell (3), the slide way (6) extends helically along the axial direction of the plug-in shell (3), the plug shell (2) is provided with a plug-in pin (5) for sliding cooperation with the slide way (6) to make the second moving state be a rotating state.

4. The hot plug connector of claim 2 or 3, wherein, The slide way (6) has a first end and a second end, the first end is for sliding of the plug-in pin (5), the second end is bent to form a clamping hole (61) for clamping of the plug-in pin (5).

5. The hot plug connector of claim 2 or 3, wherein, The end of the plug shell (2) away from the plug-in shell (3) is provided with a screw ring (8), the outer wall of the screw ring (8) is provided with friction lines.

6. The hot plug connector of any of claims 1 to 3, wherein, The plug sleeve (4) comprises: a first sleeve (41); and a second sleeve (42) arranged inside the first sleeve (41) and plug-in with the long pins (11) or the short pins (12).

7. The hot plug connector of claim 6, wherein, The first sleeve (41) is made of arc-resistant material, and the second sleeve (42) is made of conductive elastic material.

8. The hot plug connector of claim 6, wherein, The length of the first sleeve (41) is greater than the length of the second sleeve (42).

9. The hot plug connector of claim 6, wherein, The cross-sectional area of the second sleeve (42) decreases along the direction of insertion of the long pins (11).

10. A plug-in method for a hot plug connector, applied to the plug-in of the hot plug connector according to any one of claims 1 to 9, comprising: In the process of plugging, the plug-in shell (2) is controlled to pass through the first moving state and the second moving state in sequence, so that the long needle (11) in the plug (1) is plugged with the plug sleeve (4) at the first speed, and the short needle (12) in the plug (1) is plugged with the plug sleeve (4) at the second speed. In the process of pulling out, the plug-in shell (2) is controlled to pass through the second moving state and the first moving state in sequence, so that the short needle (12) in the plug (1) is plugged with the plug sleeve (4) at the second speed, and the long needle (11) in the plug (1) is plugged with the plug sleeve (4) at the first speed.

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