Socket

Abstract

According to the socket, a connecting section of a front shell comprises a first inclined ring face located in a fluid channel, a compensation shell comprises a second inclined ring face located in the fluid channel, the second inclined ring face is located behind the first inclined ring face, and the diameter of the front portion of the first inclined ring face is smaller than that of the rear portion of the first inclined ring face. The diameter of the rear portion of the first inclined ring face and the diameter of the front portion of the second inclined ring face are both smaller than the diameter of the rear portion of the second inclined ring face, and at least part of the spring is located in the space jointly defined by the first inclined ring face and the second inclined ring face, so that the spring is conveniently arranged to be in a conical spiral shape, the outer diameter of the spring is increased, and then the compression force of the spring is increased. The spring is prevented from being easily fatigued; the outer diameter of the end, abutting against the fixed valve element, of the spring is larger than that of the connecting section, the outer diameter of the end, abutting against the fixed valve element, of the spring can be further increased conveniently, and then the compression force of the spring is increased.

Description

Technical field

[0001] The invention relates to a socket, in particular to a socket with a quickly detachable and quickly connected plug. [Background Technology]

[0002] An existing socket, with Chinese patent application number CN202410429357.5, includes a socket valve core 6, a socket valve body 7 sleeved on the socket valve core 6, and a socket spring 8 abutting the socket valve body 7. The multiple spring coils of the socket spring 8 have the same diameter, and the socket spring 8 has a relatively large number of spring coils. With the development of AI servers, servers are becoming more dense and miniaturized, which often requires the axial size of liquid-cooled quick-connect connectors to be reduced. When the axial size of the socket of the liquid-cooled quick-connect connector is reduced, the number of spring coils of the spring located in the internal space has to be reduced accordingly due to the smaller internal space. As a result, insufficient spring compression force often occurs, and the spring easily fatigues, resulting in the socket being unable to reset and close.

[0003] Therefore, it is necessary to design a new socket to overcome the problems mentioned above. [Summary of the invention]

[0004] In response to the problems faced by the background technology, the purpose of the present invention is to provide a connection section of the front shell body including a first beveled annular surface located in the fluid channel, and the compensation shell including a second beveled annular surface located in the fluid channel, the second beveled annular surface is located behind the first beveled annular surface, and the diameter of the front part of the first beveled annular surface is smaller than the diameter of the rear part of the first beveled annular surface, the diameter of the rear part of the first beveled annular surface and the diameter of the front part of the second beveled annular surface are both smaller than the diameter of the rear part of the second beveled annular surface, the spring is at least partially located in the space jointly defined by the first beveled annular surface and the second beveled annular surface, one end of the spring abuts the movable valve sleeve, and the other end abuts the fixed valve core, the first beveled annular surface and the second beveled annular surface can provide a space for the spring, facilitate the spring to be set into a conical spiral shape, and increase the spring diameter, thereby increasing the compression force of the spring and avoiding easy fatigue of the spring; the outer diameter of the end of the spring abutting the fixed valve core is larger than the outer diameter of the connection section, and the outer diameter of the end of the spring abutting the fixed valve core can be further increased, which is conducive to increasing the compression force of the spring socket.

[0005] To achieve the above objectives, the present invention adopts the following technical means:

[0006] A socket, characterized in that it comprises: a front shell, which extends in the front-to-back direction and includes a plug-in section, a connecting section located behind the plug-in section and a stopper protruding circumferentially from the outer wall of the plug-in section, the outer diameter of the connecting section is less than or equal to the outer diameter of the plug-in section; a sliding shell, which is assembled forward from one end of the connecting section and slidably sleeved on the outside of the plug-in section, the stopper is located in front of the sliding shell to stop the sliding shell from moving forward, a compensation shell, which is assembled from one end of the connecting section and sleeved on the outside of the connecting section, a rear shell, which sleeves on the outside of the compensation shell, the front shell, the compensation shell and the rear shell jointly define a fluid channel, a fixed valve core, a movable valve sleeve and a spring are provided in the fluid channel, and the fixed valve core is connected to the rear shell. The movable valve sleeve can be movably mounted on the outside of the fixed valve core, and the spring is conical and spiral; the connecting section includes a first oblique annular surface located in the fluid channel, and the compensation shell includes a second oblique annular surface located in the fluid channel, the second oblique annular surface is located behind the first oblique annular surface, and the diameter of the front part of the first oblique annular surface is smaller than the diameter of the rear part of the first oblique annular surface, the diameter of the rear part of the first oblique annular surface and the diameter of the front part of the second oblique annular surface are both smaller than the diameter of the rear part of the second oblique annular surface, and the spring is at least partially located in the space jointly defined by the first oblique annular surface and the second oblique annular surface, one end of the spring abuts the movable valve sleeve, and the other end abuts the fixed valve core, and the outer diameter of the end of the spring abutting the fixed valve core is larger than the outer diameter of the connecting section.

[0007] Furthermore, the compensation shell includes a protrusion, a locking portion located behind the protrusion, and a compensation portion located behind the locking portion. The protrusion is located behind the sliding shell to prevent the sliding shell from moving backward. The protrusion is located in front of the rear shell to prevent the rear shell from moving forward. The inner surface and outer surface of the locking portion are respectively threadedly locked with the connecting section and the rear shell. The compensation portion includes a second oblique annular surface.

[0008] Furthermore, the compensation shell includes a flat annular surface located in the fluid channel, and the flat annular surface is located between the first oblique annular surface and the second oblique annular surface.

[0009] Furthermore, the absolute value of the slope of the first oblique annular surface is greater than the absolute value of the slope of the second oblique annular surface.

[0010] Furthermore, the fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The other end of the spring abuts the core seat. The socket is used for a plug to be inserted backward. Before the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core rod. All spring coils are stacked together in the front-to-back direction. The distance from the movable valve sleeve to the core seat in the front-to-back direction is less than the wire diameter of the spring.

[0011] Furthermore, the fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The other end of the spring abuts the core seat. The socket is used for a plug to be inserted backward. Before the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core rod. All spring coils of the spring are stacked together along the front-to-back direction, and the length of the spring along the front-to-back direction is equal to 2-3 times the diameter of the spring wire.

[0012] Furthermore, the front shell includes a third oblique annular surface located in the fluid channel, the third oblique annular surface is connected to the first oblique annular surface rearwardly, the absolute value of the slope of the third oblique annular surface is smaller than the absolute value of the slope of the first oblique annular surface, the movable valve sleeve includes a stop portion and a limiting portion connected to the stop portion, the stop portion abuts against the spring rearwardly, the limiting portion is located radially inside the spring, the socket is used for a plug to be inserted backwardly, before the socket and the plug are docked, the third oblique annular surface abuts against the stop portion rearwardly, and the third oblique annular surface is at least partially located radially outside the spring.

[0013] Furthermore, the rear shell body includes a large diameter section, a small diameter section located behind the large diameter section, and a step surface connecting the large diameter section and the small diameter section. The inner wall of the large diameter section is circular. The fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The socket is used for a plug to be inserted backward. Before the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core rod. The core seat includes an abutment portion. The abutment portion is located between the compensation shell and the step surface in the front-to-back direction. The abutment portion abuts the spring forward and abuts the step surface backward. The outer contour of the abutment portion is square, and radial gaps are formed between the four sides of the abutment portion and the inner wall of the large diameter section.

[0014] Furthermore, the fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The socket is used for a plug to be inserted backward. Before the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core rod. The core seat includes an abutment portion, a clamping portion connected to the abutment portion backward, and a through hole passing through the clamping portion and the abutment portion. The abutment portion abuts the spring forward, and the clamping portion is located on the radial inner side of the spring. The abutment portion is recessed into a blind groove from the end away from the clamping portion toward the end close to the clamping portion, and the blind groove is connected to the through hole.

[0015] Furthermore, the compensation shell is provided with a locking portion and a compensation portion located behind the locking portion, the connecting section includes a first sealing groove and a first locking portion located behind the first sealing groove, and when viewed radially, the projection of the first locking portion in the front-to-back direction overlaps with the projection of the first oblique annular surface, a first sealing ring is provided in the first sealing groove, the first sealing ring abuts the compensation shell, the inner surface of the locking portion is threadedly locked with the first locking portion, and the compensation portion includes a second oblique annular surface.

[0016] Furthermore, the compensation shell is provided with a locking portion and a compensation portion located behind the locking portion, the rear shell includes a second sealing groove and a second locking portion located in front of the second sealing groove, a second sealing ring is provided in the second sealing groove, the second sealing ring abuts the compensation portion, the outer surface of the locking portion is threadedly locked with the second locking portion, and the compensation portion includes a second oblique annular surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First, in the present application, when the axial dimension of the socket is reduced, the connecting section of the front housing is provided with a first oblique annular surface located in the fluid passage, and the diameter of the front portion of the first oblique annular surface is smaller than the diameter of the rear portion of the first oblique annular surface. The spring is at least partially located in the space defined by the first oblique annular surface. The first oblique annular surface can provide space for the spring, facilitating the spring to be configured into a tapered spiral shape, thereby increasing the outer diameter of the spring, increasing the compression force of the spring, and preventing the spring from easily fatigued.

[0019] Second, the front shell includes a plug-in section, a connecting section located behind the plug-in section, and a stopper protruding from the outer wall of the plug-in section. By setting the outer diameter of the connecting section to be less than or equal to the outer diameter of the plug-in section, it is convenient for the sliding shell to be assembled from one end of the connecting section forward and slidably mounted on the outside of the plug-in section. The stopper is located in front of the sliding shell and stops the sliding shell backward. If the outer diameter of the connecting section of the front shell is increased, thereby increasing the diameter of the first oblique annular surface of the connecting section and providing more space for the increase in the outer diameter of the spring, two situations will arise. The first situation is that the sliding shell cannot be assembled from one end of the connecting section to the plug-in section of the front shell. The second situation is that in order to allow the sliding shell to be assembled from one end of the connecting section to the plug-in section of the front shell, the outer diameter of the sliding shell has to be increased, which ultimately increases the overall outer diameter of the entire socket, which is not conducive to the overall size design of the socket. In this solution, without increasing the outer diameter of the connecting section of the front shell, a compensation shell is provided, which includes a second beveled annular surface located in the fluid channel. The second beveled annular surface is located behind the first beveled annular surface. The diameter of the rear part of the first beveled annular surface and the diameter of the front part of the second beveled annular surface are both smaller than the diameter of the rear part of the second beveled annular surface. The spring is at least partially located in the space defined by the second beveled annular surface. The second beveled annular surface can provide space for the spring. The outer diameter of the end of the spring abutting the fixed valve core is larger than the outer diameter of the connecting section, which can facilitate further increasing the outer diameter of the end of the spring abutting the fixed valve core, which is beneficial to increasing the compression force of the spring.

Brief Description of the Drawings

[0020] Figure 1 is an exploded view of the socket of the present invention;

[0021] Figure 2 A perspective view of the socket of the present invention;

[0022] Figure 3 for Figure 2 Cross-sectional view along AA;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 for Figure 2 Cross-sectional view along CC;

[0025] Figure 6 This is a three-dimensional diagram of the male and female parts of the present invention after docking;

[0026] Figure 7 for Figure 6 Cross-sectional view along DD;

[0027] Figure 8 This is a cross-sectional view of the male and female connectors at position DD before they are connected;

[0028] Figure 9 A three-dimensional diagram of the fixed valve core of the present invention from another perspective;

[0029] Description of the accompanying drawings for the specific embodiments:

[0030] Socket 100 Front housing 1 Plug-in section 11 Connecting section 12 First oblique annular surface 121 First cross section S1 The third oblique annular surface 122 The third cross section S3 First sealing groove 123 First locking portion 124 Stopper 13 Sliding Shell 2 Elastic part 3 Compensation shell 4 protrusion 41 Locking portion 42 Compensation unit 43 Second oblique annular surface 431 Second cross section S2 Flat ring 432 rear housing 5 Large diameter section 51 Second sealing groove 511 Second locking portion 512 Small path section 52 Step surface 53 Fluid channel 6 Fixed valve core 7 Core head 71 Core seat 72 Contact portion 721 Blind slot 7211 Positioning portion 722 Through hole 723 Core rod 73 Movable valve sleeve 8 Stopper 81 Limiting portion 82 Spring 9 First sealing ring P1 Second sealing ring P2 Central axis O Plug 200 [Specific implementation method]

[0031] To facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 9 As shown, the socket 100 of the present invention is used for rearward insertion of a plug 200. The socket 100 includes a front housing 1, a sliding housing 2, an elastic member 3, and a compensation housing 4, which are respectively sleeved on the outside of the front housing 1, and a rear housing 5 sleeved on the outside of the compensation housing 4. The socket 100 also includes a fluid channel 6, and a fixed valve core 7, a movable valve sleeve 8, and a spring 9 are arranged in the fluid channel 6. The fluid channel 6 is defined by the front housing 1, the compensation housing 4, and the rear housing 5. The fixed valve core 7 is connected to the rear housing 5. The movable valve sleeve 8 can be movably sleeved on the outside of the fixed valve core 7. The spring 9 has a conical spiral shape. The front housing 1 defines the central axis O of the docking plug 200, and the diameter direction of the front housing 1 passing through the central axis O is defined as the radial direction.

[0033] like Figures 3 and 4As shown, the front housing 1 extends in the front-to-back direction and includes an insertion section 11, a connecting section 12 located behind the insertion section 11, and a stopper 13 protruding circumferentially from the outer wall of the insertion section 11. In this embodiment, the outer diameter of the connecting section 12 is equal to the outer diameter of the insertion section 11. In other embodiments, the outer diameter of the connecting section 12 is smaller than the outer diameter of the insertion section 11. The connecting section 12 includes a first beveled annular surface 121 and a third beveled annular surface 122 located within the fluid channel 6. The third beveled annular surface 122 is rearwardly connected to the first beveled annular surface 121. The diameter of the front portion of the first beveled annular surface 121 is smaller than the diameter of the rear portion of the first beveled annular surface 121. The absolute value of the slope of the first beveled annular surface 121 |k1| is greater than the absolute value of the slope of the third beveled annular surface 122 |k3|. The comparison of the absolute values ​​of the slopes of the first oblique annular surface 121 and the third oblique annular surface 122 is specifically embodied as follows: a first cross section S1 is defined that is perpendicular to the central axis O and intersects the first oblique annular surface 121, and a third cross section S3 is defined that is perpendicular to the central axis O and intersects the third oblique annular surface 122. The angle θ1 between the first oblique annular surface 121 and the first cross section S1 is compared with the angle θ3 between the third oblique annular surface 122 and the third cross section S3, i.e., θ1>θ3. Thus, the absolute values ​​of the slopes of the first oblique annular surface 121 and the third oblique annular surface 122 are compared. The slope of the first oblique annular surface 121 is defined as a first slope k1, where k1=tanθ1, and the slope of the third oblique annular surface 122 is defined as a third slope k3, where k2=tanθ2. The absolute value of the first slope k1 is greater than the absolute value of the third slope k3, i.e., |k1|>|k3|.

[0034] like Figure 3 As shown, the connecting section 12 also includes a first sealing groove 123 and a first locking portion 124 located outside the fluid channel 6. The first locking portion 124 is located behind the first sealing groove 123. When viewed radially, the projection of the first locking portion 124 in the front-to-back direction overlaps with the projection of the first oblique annular surface 121. A first sealing ring P1 is located within the first sealing groove 123 and abuts against the compensation housing 4.

[0035] like Figure 3 As shown, the sliding housing 2 is assembled forward from one end of the connecting section 12 and is slidably sleeved on the outside of the plug-in section 11 . The stopper 13 is located in front of the sliding housing 2 to prevent the sliding housing 2 from moving forward.

[0036] like Figure 3 As shown, the compensating housing 4 is assembled from one end of the connecting section 12 and sleeved onto the exterior of the connecting section 12. The compensating housing 4 includes a protrusion 41, a locking portion 42 located behind the protrusion 41, and a compensating portion 43 located behind the locking portion 42. The protrusion 41 is located behind the sliding housing 2 to prevent the sliding housing 2 from retracting, while the protrusion 41 is located in front of the rear housing 5 to prevent the rear housing 5 from moving forward. The inner and outer surfaces of the locking portion 42 are threadedly locked to the first locking portion 124 and the rear housing 5, respectively.

[0037] like Figure 3 As shown, the compensating portion 43 includes a second beveled annular surface 431 and a flat annular surface 432 located within the fluid channel 6. The second beveled annular surface 431 is located behind the first beveled annular surface 121, and the flat annular surface 432 is located between the first beveled annular surface 121 and the second beveled annular surface 431. The flat annular surface 432 can prevent the spring 9 from being scratched during elastic displacement. The diameter of the rear portion of the first beveled annular surface 121 and the diameter of the front portion of the second beveled annular surface 431 are both smaller than the diameter of the rear portion of the second beveled annular surface 431.

[0038] like Figure 4 As shown, the absolute value of the slope of the first oblique annular surface 121, |k1|, is greater than the absolute value of the slope of the second oblique annular surface 431, |k2|. The comparison of the absolute values ​​of the slopes of the first oblique annular surface 121 and the second oblique annular surface 431 is specifically embodied in the following manner: a first cross-section S1 is defined that is perpendicular to the central axis O and intersects the first oblique annular surface 121, and a second cross-section S2 is defined that is perpendicular to the central axis O and intersects the second oblique annular surface 431. The angle θ1 between the first oblique annular surface 121 and the first cross-section S1 is compared with the angle θ2 between the second oblique annular surface 431 and the second cross-section S2, i.e., θ1>θ2, thereby comparing the absolute values ​​of the slopes of the first oblique annular surface 121 and the second oblique annular surface 431. The slope of the first oblique annular surface 121 is defined as a first slope k1, and k1=tanθ1. The slope of the second oblique annular surface 431 is defined as a second slope k2, and k2=tanθ2. The absolute value of the first slope k1 is greater than the absolute value of the second slope k2, that is, |k1|>|k2|.

[0039] like Figure 3 As shown, the rear housing 5 includes a large diameter section 51, a small diameter section 52 located behind the large diameter section 51, and a stepped surface 53 connecting the large diameter section 51 and the small diameter section 52. The large diameter section 51 includes a second sealing groove 511 and a second locking portion 512 located in front of the second sealing groove 511. A second sealing ring P2 is disposed in the second sealing groove 511, and the second sealing ring P2 abuts the compensating portion 43. The second locking portion 512 is threadedly locked with the outer surface of the locking portion 42.

[0040] like Figures 7 and 8 As shown, the fixed valve core 7 includes a core head 71, a core seat 72, and a core rod 73 connecting the core head 71 and the core seat 72. Before the socket 100 and the plug 200 are connected, the movable valve sleeve 8 is mounted on the outside of the core head 71. After the socket 100 and the plug 200 are connected, the movable valve sleeve 8 is mounted on the outside of the core rod 73. All spring coils of the spring 9 are stacked together in the front-to-back direction. The distance between the movable valve sleeve 8 and the core seat 72 in the front-to-back direction is less than the wire diameter of the spring 9, and the length of the spring 9 in the front-to-back direction is equal to 2-3 times the wire diameter of the spring 9. The wire diameter of the spring 9 refers to the diameter of the metal wire used for the spring 9.

[0041] like Figure 9 As shown, the core seat 72 includes an abutment portion 721, a locking portion 722 connected to the abutment portion 721 rearwardly, and a through hole 723 that passes through the locking portion 722 and the abutment portion 721. The inner wall of the large diameter section 51 is circular, and the outer contour of the abutment portion 721 is square. The four sides of the abutment portion 721 form a radial gap with the inner wall of the large diameter section 51, which helps to reduce fluid resistance. In the front-to-back direction, the abutment portion 721 is located between the compensation shell 4 and the step surface 53. The compensation shell 4 blocks the abutment portion 721 from moving forward. The abutment portion 721 abuts the spring 9 forwardly and the step surface 53 rearwardly. The locking portion 722 is located radially inward of the spring 9. The abutment portion 721 is recessed with a blind groove 7211 from the end away from the locking portion 722 toward the end close to the locking portion 722. The blind groove 7211 is connected to the through hole 723.

[0042] like Figure 8 As shown, the movable valve sleeve 8 includes a stop portion 81 and a limiting portion 82 connected to the stop portion 81. The stop portion 81 abuts rearwardly against the spring 9, and the limiting portion 82 is located radially inwardly of the spring 9. Before the socket 100 and the plug 200 are mated, the third beveled annular surface 122 abuts rearwardly against the stop portion 81, and a portion of the third beveled annular surface 122 is located radially outwardly of the spring 9. In other embodiments, the entire third beveled annular surface 122 is located radially outwardly of the spring 9.

[0043] like Figure 3 As shown, the spring 9 is partially located within the space defined by the first beveled annular surface 121 and the second beveled annular surface 431, which is part of the fluid channel 6. In other embodiments, the spring 9 is entirely located within the space defined by the first beveled annular surface 121 and the second beveled annular surface 431. The outer diameter of the end of the spring 9 that abuts the abutment portion 721 is greater than the outer diameter of the connecting section 12.

[0044] In summary, the socket of the present invention has the following beneficial effects:

[0045] (1) In the present application, when the axial dimension of the socket 100 is reduced, the connection section 12 of the front housing 1 is provided with a first oblique annular surface 121 located in the fluid channel 6, and the diameter of the front portion of the first oblique annular surface 121 is smaller than the diameter of the rear portion of the first oblique annular surface 121. The spring 9 is at least partially located in the space defined by the first oblique annular surface 121. The first oblique annular surface 121 can provide space for the spring 9, facilitate the spring 9 to be set into a conical spiral shape, and increase the outer diameter of the spring 9, thereby increasing the compression force of the spring 9 and preventing the spring 9 from being easily fatigued. The front housing 1 includes a plug-in section 11, a connection section 12 located behind the plug-in section 11, and a stopper 13 protruding from the outer wall of the plug-in section 11. By setting the outer diameter of the connection section 12 to be smaller than or equal to the outer diameter of the plug-in section 11, it is convenient for the sliding housing 2 to be assembled forward from one end of the connection section 12 and slidably sleeved on the outside of the plug-in section 11. The stopper 13 is located in front of the sliding housing 2 and stops the sliding housing 2 backward. If the outer diameter of the connecting section 12 of the front housing 1 is increased, thereby increasing the diameter of the first oblique annular surface 121 of the connecting section 12, thereby providing greater space for the increase in the diameter of the spring 9, then two situations will arise. In the first situation, the sliding shell 2 cannot be assembled from one end of the connecting section 12 to the plug-in section 11 of the front housing 1. In the second situation, in order to allow the sliding shell 2 to be assembled from one end of the connecting section 12 to the plug-in section 11 of the front housing 1, the outer diameter of the sliding shell 2 has to be increased, which ultimately leads to an increase in the overall outer diameter of the entire socket 100, which is not conducive to the overall size design of the socket 100. In this solution, without increasing the outer diameter of the connecting section 12 of the front shell 1, a compensation shell 4 is provided, which includes a second beveled annular surface 431 located in the fluid channel 6. The second beveled annular surface 431 is located behind the first beveled annular surface 121. The diameter of the rear part of the first beveled annular surface 121 and the diameter of the front part of the second beveled annular surface 431 are both smaller than the diameter of the rear part of the second beveled annular surface 431. The spring 9 is at least partially located in the space defined by the second beveled annular surface 431. The second beveled annular surface 431 can provide a space for the spring 9. The outer diameter of the end of the spring 9 abutting the fixed valve core 7 is larger than the outer diameter of the connecting section 12. The outer diameter of the end of the spring 9 abutting the fixed valve core 7 can be further increased, which is beneficial to increase the compression force of the spring 9.

[0046] (2) Since the absolute value of the slope of the first oblique annular surface 121 is greater than the absolute value of the slope of the second oblique annular surface 431, along the same length in the front-to-back direction, the wall thickness of the connecting section 12 at the position of the first oblique annular surface 121 is less in the radial direction than the wall thickness of the compensating shell 4 at the position of the second oblique annular surface 431. This is beneficial to ensuring the structural strength of the connecting section 12 while increasing the accommodation space provided by the second oblique annular surface 431 for the spring 9.

[0047] (3) After the socket 100 is docked with the plug 200, the movable valve sleeve 8 is sleeved on the outside of the core rod 73, and all the spring coils of the spring 9 are stacked together in the front-to-back direction. The distance from the movable valve sleeve 8 to the core seat 72 in the front-to-back direction is smaller than the wire diameter of the spring 9, which effectively reduces the size of the socket 100 in the front-to-back direction and is conducive to the miniaturization design of the socket 100.

[0048] (4) After the socket 100 is docked with the plug 200, the movable valve sleeve 8 is sleeved on the outside of the core rod 73, and all the spring coils of the spring 9 along the front-to-back direction are stacked together. The length of the spring 9 along the front-to-back direction is equal to 2-3 times the wire diameter of the spring 9, which effectively reduces the size of the socket 100 along the front-to-back direction and is conducive to the miniaturization design of the socket 100.

[0049] (5) The movable valve sleeve 8 includes a stop portion 81 and a limiting portion 82 connected to the stop portion 81. The stop portion 81 abuts against the spring 9 backward, and the limiting portion 82 is located radially inside the spring 9. The stop portion 81 and the limiting portion 82 jointly limit the spring 9. Compared with the limiting portion 82 being located radially outside the spring 9, the limiting portion 82 is located radially inside the spring 9. The inner diameter of the end of the spring 9 abutting against the stop portion 81 is larger, which is beneficial to increasing the compression force of the spring 9. Before the socket 100 and the plug 200 are connected, the third oblique annular surface 122 is at least partially located radially outside the spring 9. The absolute value of the slope of the third oblique annular surface 122 is smaller than the absolute value of the slope of the first oblique annular surface 121. The wall thickness of the connecting section 12 at the position of the first oblique annular surface 121 is reduced in the radial direction less than the wall thickness of the front shell 1 at the position of the third oblique annular surface 122. This is beneficial to ensuring the structural strength of the connecting section 12 and ensuring that the third oblique annular surface 122 does not touch the spring 9.

[0050] (6) The retaining portion 722 is located radially inward of the spring 9 and limits the spring 9 in the radial direction. The abutting portion 721 is provided with a blind groove 7211 extending from the end away from the retaining portion 722 toward the end close to the retaining portion 722. The blind groove 7211 is connected to the through hole 723, thereby reducing fluid resistance and facilitating an increase in the speed at which the fluid flows through the through hole 723.

[0051] (7) Since the diameter of the front portion of the first oblique annular surface 121 is smaller than the diameter of the rear portion of the first oblique annular surface 121, and when viewed radially, the projection of the first locking portion 124 in the front-to-back direction overlaps with the projection of the first oblique annular surface 121, the wall thickness of the connecting section 12 at the position of the first sealing groove 123 is greater than the wall thickness of the connecting section 12 at the position of the first locking portion 124. Arranging the first locking portion 124 behind the first sealing groove 123 is beneficial to ensuring the structural strength of the connecting section 12.

[0052] The above detailed description is only an illustration of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this invention are included in the patent scope of this invention.

Claims

1. A socket, characterized in that: include: The front housing extends in the front-to-back direction and includes a plug-in section, a connecting section located behind the plug-in section, and a stopper protruding from the outer wall of the plug-in section. The outer diameter of the connecting section is less than or equal to the outer diameter of the plug-in section. The sliding shell is assembled from one end of the connecting section forward and can be slidably sleeved on the outside of the plug-in section. The stopper is located in front of the sliding shell to prevent the sliding shell from moving forward. The compensation shell is assembled from one end of the connecting section and is sleeved on the outside of the connecting section. The rear shell is sleeved on the outside of the compensation shell. The front housing, the compensation housing, and the rear housing jointly define a fluid passage, in which a fixed valve core, a movable valve sleeve, and a spring are disposed. The fixed valve core is connected to the rear housing, and the movable valve sleeve can be movably sleeved on the outside of the fixed valve core. The spring is in a conical spiral shape. The connecting section includes a first oblique annular surface located in the fluid channel, and the compensation shell includes a second oblique annular surface located in the fluid channel. The second oblique annular surface is located behind the first oblique annular surface, and the diameter of the front part of the first oblique annular surface is smaller than the diameter of the rear part of the first oblique annular surface. The diameter of the rear part of the first oblique annular surface and the diameter of the front part of the second oblique annular surface are both smaller than the diameter of the rear part of the second oblique annular surface. The spring is at least partially located in the space jointly defined by the first oblique annular surface and the second oblique annular surface. One end of the spring abuts the movable valve sleeve, and the other end abuts the fixed valve core. The outer diameter of the end of the spring abutting the fixed valve core is larger than the outer diameter of the connecting section.

2. The socket according to claim 1, wherein: The compensation shell includes a protrusion, a locking portion located behind the protrusion, and a compensation portion located behind the locking portion. The protrusion is located behind the sliding shell to prevent the sliding shell from moving backward. The protrusion is located in front of the rear shell to prevent the rear shell from moving forward. The inner surface and outer surface of the locking portion are respectively threadedly locked with the connecting section and the rear shell. The compensation portion includes a second oblique annular surface.

3. The socket according to claim 1, wherein: The compensation shell includes a flat annular surface located in the fluid channel, and the flat annular surface is located between the first oblique annular surface and the second oblique annular surface.

4. The socket according to claim 1, wherein: The absolute value of the slope of the first oblique annular surface is greater than the absolute value of the slope of the second oblique annular surface.

5. The socket according to claim 1, wherein: The fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The other end of the spring abuts the core seat. The socket is used for a plug to be inserted backward. Before the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core rod. All spring coils are stacked together in the front-to-back direction. The distance from the movable valve sleeve to the core seat in the front-to-back direction is less than the wire diameter of the spring.

6. The socket according to claim 1, wherein: The fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The other end of the spring abuts the core seat. The socket is used for a plug to be inserted backward. Before the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is docked with the plug, the movable valve sleeve is sleeved on the outside of the core rod. All spring coils of the spring are stacked together along the front and back directions, and the length of the spring along the front and back directions is equal to 2-3 times the diameter of the spring wire.

7. The socket according to claim 1, wherein: The front shell includes a third oblique annular surface located in the fluid channel, the third oblique annular surface is connected to the first oblique annular surface backward, the absolute value of the slope of the third oblique annular surface is smaller than the absolute value of the slope of the first oblique annular surface, the movable valve sleeve includes a stop portion and a limiting portion connected to the stop portion, the stop portion abuts against the spring backward, the limiting portion is located on the radial inside of the spring, the socket is used for a plug to be inserted backward, before the socket is docked with the plug, the third oblique annular surface abuts against the stop portion backward, and the third oblique annular surface is at least partially located on the radial outside of the spring.

8. The socket according to claim 1, wherein: The rear shell includes a large diameter section, a small diameter section located behind the large diameter section, and a step surface connecting the large diameter section and the small diameter section. The inner wall of the large diameter section is circular. The fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The socket is used for a plug to be inserted backward. Before the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core rod. The core seat includes an abutment portion. The abutment portion is located between the compensation shell and the step surface along the front-to-back direction. The abutment portion abuts the spring forward and abuts the step surface backward. The outer contour of the abutment portion is square, and radial gaps are formed between the four sides of the abutment portion and the inner wall of the large diameter section.

9. The socket according to claim 1, wherein: The fixed valve core includes a core head, a core seat, and a core rod connecting the core head and the core seat. The socket is used for a plug to be inserted backward. Before the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core head. After the socket is connected to the plug, the movable valve sleeve is sleeved on the outside of the core rod. The core seat includes an abutment portion, a clamping portion connected to the abutment portion backward, and a through hole passing through the clamping portion and the abutment portion. The abutment portion abuts the spring forward, and the clamping portion is located on the radial inner side of the spring. The abutment portion is recessed with a blind groove from the end away from the clamping portion toward the end close to the clamping portion, and the blind groove is connected to the through hole.

10. The socket according to claim 1, wherein: The compensation shell is provided with a locking portion and a compensation portion located behind the locking portion. The connecting section includes a first sealing groove and a first locking portion located behind the first sealing groove. When viewed radially, the projection of the first locking portion in the front-to-back direction overlaps with the projection of the first oblique annular surface. A first sealing ring is provided in the first sealing groove. The first sealing ring abuts the compensation shell. The inner surface of the locking portion is threadedly locked with the first locking portion. The compensation portion includes a second oblique annular surface.

11. The socket according to claim 1, wherein: The compensation shell is provided with a locking portion and a compensation portion located behind the locking portion. The rear shell includes a second sealing groove and a second locking portion located in front of the second sealing groove. A second sealing ring is provided in the second sealing groove. The second sealing ring abuts the compensation portion. The outer surface of the locking portion is threadedly locked with the second locking portion. The compensation portion includes a second oblique annular surface.

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