Low flow resistance fluid connector

Abstract

The application provides a low-flow-resistance fluid connector, comprising a plug and a socket. The plug comprises a plug shell, a sealing block and a plug spring, the plug shell has a plug channel, the sealing block and the plug spring are sequentially arranged in the plug channel, the plug spring always has a tendency to drive the sealing block to slide to a blocking position, and the sealing block is in sealing cooperation with the channel wall of the plug channel when in the blocking position; the sealing block comprises a sealing main body and a ring-shaped cylinder connected with each other, the sealing main body has a flow divider extending into the internal space of the ring-shaped cylinder, the side surface of the flow divider has a first flow diversion inclined surface, and a plurality of side flow channels are arranged on the side wall of the ring-shaped cylinder and are arranged around the flow divider and are spaced from each other, and the side flow channels are in communication with the internal space of the ring-shaped cylinder; wherein, in the process of inserting the plug into the socket, the socket pushes the sealing block to slide, so that the sealing block is switched from the blocking position to a position for opening the plug channel, so as to reduce the fluid resistance of the sealing block.

Description

Technical Field

[0001] This invention relates to the field of fluid connection fittings, and more particularly to a low-flow-resistance fluid connector. Background Technology

[0002] In a fluid connector device disclosed in Chinese patent application No. 202121853611.2, the sealing block in its plug has a circular channel and an opening connected to the circular channel. The circular channel only penetrates the side of the sealing block opposite to the sealing rod, and the blind end of the circular channel is a flush structure. This makes the sealing block more obstructive to the fluid, thereby increasing the flow resistance.

[0003] Meanwhile, in a fluid connector device disclosed in Chinese patent application number 202121853611.2, the sealing ring in its socket also has the defect of significantly hindering fluid flow.

[0004] Therefore, there is an urgent need for a low-flow-resistance fluid connector to overcome one or more of the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a low-flow-resistance fluid connector that reduces the fluid resistance of the sealing block.

[0006] To achieve the above objectives, the low-flow-resistance fluid connector of the present invention includes a pluggable plug and a receptacle. The plug includes a plug housing, a sealing block, and a plug spring. The plug housing has a plug channel. The sealing block and the plug spring are sequentially disposed within the plug channel along the plug's pull-out direction. The plug spring has a constant tendency to drive the sealing block to slide to a blocking position along the plug's insertion direction. In the blocking position, the sealing block abuts against and seals against the channel wall of the plug channel to correspondingly close the plug channel. The sealing block sequentially includes a connected sealing body and an annular cylinder along the plug's pull-out direction. The sealing body has a portion extending into the receptacle along the plug's pull-out direction. The fluid distribution in the internal space of the annular cylinder has a first diversion slope extending obliquely away from the side wall of the annular cylinder along the pull-out direction of the plug. The side wall of the annular cylinder is also provided with a plurality of side flow channels that are spaced apart from each other and arranged together around the fluid distribution. The side flow channels are in communication with the internal space of the annular cylinder. During the process of the plug being inserted into the socket, the socket pushes the sealing block to slide against the elastic force of the plug spring along the pull-out direction of the plug, thereby switching the sealing block from the blocking position to the position of opening the plug channel.

[0007] Preferably, the flow divider is a platform or a cone, and the side of the platform or cone forms the first flow divider slope, with each side flow channel arranged opposite to the first flow divider slope.

[0008] Preferably, a partition is defined on the side wall of the annular cylinder at a position between two adjacent side flow channels. A reinforcing rib is provided in the internal space of the annular cylinder opposite to the partition. The reinforcing rib is fixed to the side of the flow divider and the partition. The side of the reinforcing rib facing away from the partition has a second flow divider slope extending inclined toward the partition along the pull-out direction of the plug.

[0009] Preferably, there are two second diversion ramps arranged at an acute angle to each other, and the intersection of the two second diversion ramps faces away from the partition.

[0010] Preferably, the plug further includes a plug retainer spring, and a fixing groove is provided on the channel wall of the plug channel away from the sealing block. The plug retainer spring is engaged in the fixing groove. One end of the plug spring abuts against the end face of the annular cylinder away from the sealing body, and the other end of the plug spring abuts against the plug retainer spring.

[0011] Preferably, the annular cylinder protrudes radially from the sealing body, and the outer side of the annular cylinder has a first abutting slope extending obliquely towards the channel wall of the plug channel along the pull-out direction of the plug. The channel wall of the plug channel has a corresponding second abutting slope, and the second abutting slope cooperates with the first abutting slope when in the abutting position.

[0012] Preferably, the socket includes a socket housing, a sealing rod assembly, a sealing ring, and a socket spring. The socket housing has a socket channel. The sealing rod assembly, socket spring, and sealing ring are sequentially disposed in the socket channel along the insertion direction of the socket. The sealing rod assembly is sequentially inserted into the socket spring and the sealing ring along the insertion direction of the socket. The end of the sealing rod assembly away from the plug is kept in contact with the socket housing under the action of the socket spring. The sealing ring can slide and engage with the socket channel in the socket channel. The socket spring always has a tendency to drive the sealing ring to slide to a blocking position. When in the blocking position, the sealing rod assembly simultaneously seals with the channel wall of the socket channel and the sealing block to correspondingly close the socket channel. During the insertion of the plug into the socket, the sealing rod assembly pushes the sealing block along the plug's pull-out direction to overcome the spring force of the plug spring, and the plug housing pushes the sealing ring along the plug's insertion direction to overcome the spring force of the socket spring. This causes the sealing block to switch from the blocking position to the position where the plug channel is open, and the sealing ring to switch from the blocking position to the position where the socket channel is open, thereby achieving communication between the plug channel and the socket channel.

[0013] Preferably, the inner wall of the sealing ring is provided with a plurality of raised ribs that are spaced apart from each other and arranged together around the sealing rod assembly, and the raised ribs extend obliquely toward the inner wall of the sealing ring along the pull-out direction of the socket.

[0014] Preferably, the socket housing includes a socket outer shell, a socket housing sleeve, and a locking device. The socket housing sleeve is fitted into the end of the socket outer shell near the plug in a sealing fit. An insertion channel is formed on the side wall of the socket outer shell, and a locking groove communicating with the insertion channel is formed on the side wall of the socket housing sleeve. The locking device is inserted into the locking groove through the insertion channel. The locking device and the socket outer shell together prevent the socket housing sleeve from sliding on the socket outer shell. The socket channel is formed at both the socket outer shell and the socket housing sleeve. The end of the sealing rod assembly away from the plug is kept in abutting state with the socket outer shell under the action of the socket spring. The end of the sealing rod assembly near the plug extends into the socket housing sleeve. The sealing ring abuts and seals with the socket housing sleeve in the blocking position. During the process of inserting the plug into the socket, the plug housing also slides into the socket housing sleeve.

[0015] Preferably, the sealing rod assembly includes a rod seat, a sealing rod, and a sealing ring. The sealing rod includes a rod body and a rod head that protrudes radially from the rod body. The end of the rod body away from the rod head is detachably or non-detachably assembled with the rod seat. An embedded annular groove is formed on the rod head, and the sealing ring is fitted into the embedded annular groove. The sealing ring also protrudes radially from the rod head.

[0016] Preferably, the socket further includes a retaining spring, and a retaining ring groove is formed on the channel wall of the socket channel located at the socket housing. The retaining spring is engaged in the retaining ring groove, and the retaining spring and the socket housing together clamp the rod seat.

[0017] Preferably, the sealing rod assembly further includes a first retaining spring and a second retaining spring. A through hole is provided in the middle of the rod seat. The end of the rod body away from the rod head is inserted into the through hole. A first retaining groove and a second retaining groove are provided in the end of the rod body away from the rod head. The first retaining spring is engaged in the first retaining groove and abuts against the side of the rod seat facing the rod head. The second retaining spring is engaged in the second retaining groove and abuts against the side of the rod seat away from the rod head, so that the first retaining spring and the second retaining spring together prevent the sealing rod from sliding axially relative to the rod seat.

[0018] Preferably, the rod holder has one or more notches, which are arranged in a spaced manner around the center line of the rod holder. The side of the rod holder opposite to the rod head has a recessed hole for enlarging the through hole and surrounding the rod body, and the first retaining spring is located in the recessed hole.

[0019] Preferably, the socket further includes a button mounted on the socket housing and switchable between a locked position and an unlocked position, and a button spring that constantly drives the button to switch to the locked position. The outer surface of the plug housing has a pushing slope and a locking surface arranged sequentially along the plug's pull-out direction. The pushing slope extends outwardly along the plug's pull-out direction, and the button is correspondingly provided with a receiving slope. During the process of the plug being inserted into the socket, the locking surface passes over the button by the pushing slope against the receiving slope, and the button locks into the locking surface under the action of the button spring.

[0020] Preferably, the side wall of the socket housing is provided with an inner ring groove and an outer ring groove, and a sealing ring is embedded in each of the inner ring groove and the outer ring groove; or, a socket washer and a socket sealing ring are provided between the end face of the socket housing away from the plug and the socket outer shell, the socket washer and the socket sealing ring are arranged sequentially along the insertion direction of the socket, and the socket washer and the socket sealing ring are sandwiched between the end face of the socket housing away from the plug and the socket outer shell, and the sealing ring passes through the socket washer, the socket sealing ring and the socket housing when the blocking position is reached, and the sealing ring also abuts against the socket washer when the blocking position is reached.

[0021] Compared with existing technologies, the sealing body has a fluid divider extending into the internal space of the annular cylinder along the plug-out direction. The side of the fluid divider has a first diversion slope extending obliquely away from the side wall of the annular cylinder along the plug-out direction. The side wall of the annular cylinder also has multiple side flow channels that are spaced apart from each other and arranged around the fluid divider. The side flow channels are connected to the internal space of the annular cylinder. This design allows the fluid flowing into the internal space of the annular cylinder to be diverted to the side flow channels under the action of the fluid divider, and then flow out of the internal space of the annular cylinder through the side flow channels, effectively reducing the resistance of the sealing block to the fluid. Attached Figure Description

[0022] Figure 1 This is an internal structural diagram of the low-flow-resistance fluid connector of the present invention after the plug and socket are properly connected.

[0023] Figure 2 This is a plan view of the plug in the fluid connector of the present invention.

[0024] Figure 3 yes Figure 2 The plug shown Figure 2 An internal view cut along the center line and viewed along the arrow pointing to that center line.

[0025] Figure 4 yes Figure 2 The diagram shows a 3D view of the plug in its exploded state.

[0026] Figure 5 yes Figure 4 A three-dimensional view of the sealing block in the plug shown.

[0027] Figure 6 yes Figure 5 The diagram shows the internal structure of the sealing block cut axially.

[0028] Figure 7 yes Figure 5 The diagram shows the internal structure of the sealing block cut at the middle of the reinforcing rib.

[0029] Figure 8 Is Figure 6 The diagram shows the state of the fluid.

[0030] Figure 9 Is Figure 7 The diagram shows the state of the fluid.

[0031] Figure 10 This is a plan view of the socket with a button in the fluid connector of the present invention.

[0032] Figure 11 yes Figure 10 The socket shown is along Figure 10 An internal view cut along the center line and viewed along the arrow pointing to that center line.

[0033] Figure 12 yes Figure 10 The diagram shows the internal view of the socket cut along its axial direction.

[0034] Figure 13 Yes Figure 12 The socket shown is a modified internal diagram.

[0035] Figure 14 yes Figure 10 The socket shown is a 3D view in its exploded state.

[0036] Figure 15 yes Figure 14 A further decomposed 3D view.

[0037] Figure 16 yes Figure 14 The diagram shows a plan view of the socket housing in the socket.

[0038] Figure 17 yes Figure 16 The socket housing shown is along Figure 16 An internal view cut along the center line and viewed along the arrow pointing to that center line.

[0039] Figure 18 yes Figure 14 A perspective view of the sealing rod assembly in the socket shown.

[0040] Figure 19 yes Figure 18 The sealing rod assembly shown is along Figure 10 An internal view cut along the center line and viewed along the arrow pointing to that center line.

[0041] Figure 20 yes Figure 18 The diagram shows a three-dimensional view of the sealing rod assembly in its exploded state.

[0042] Figure 21 yes Figure 20The diagram shows the structure of the rod seat in the sealing rod assembly undergoing deformation.

[0043] Figure 22 yes Figure 14 A plan view of the sealing ring in the socket shown.

[0044] Figure 23 yes Figure 22 The sealing ring shown is along Figure 22 An internal view cut along the center line and viewed along the arrow pointing to that center line.

[0045] Figure 24 This is a diagram showing the state of the fluid connector of the present invention when the plug is not inserted into the socket.

[0046] Figure 25 This is a diagram showing the state of the fluid connector of the present invention when the plug is inserted into the socket but not in the correct position. Detailed Implementation

[0047] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0048] Please see Figures 1 to 6 The low-flow-resistance fluid connector 100 of the present invention includes a pluggable plug 10 and a receptacle 30. The plug 10 includes a plug housing 11, a sealing block 12, and a plug spring 13. The plug housing 11 has a plug channel 111, optionally... Figure 3 and Figure 4 In the example shown, the plug channel 111 is a circular channel. A circular channel means that the cross-sectional outline of the channel wall 11 of the plug channel 111 is circular, which facilitates the manufacturing and processing of the plug channel 111. Of course, depending on actual needs, the plug channel 111 can also be a polygonal channel or an elliptical channel, etc., therefore, it is not considered a specific example. Figure 4 The above is the limit.

[0049] Simultaneously, the sealing block 12 and the plug spring 13 are sequentially arranged in the plug channel 111 along the pull-out direction of the plug 10 (see the direction indicated by arrow B). The plug spring 13 always has a tendency to drive the sealing block 12 to slide to the blocking position along the insertion direction of the plug 10 (see the direction indicated by arrow A). When the sealing block 12 is in the blocking position, it abuts against and seals against the channel wall 1111 of the plug channel 111, thereby correspondingly closing the plug channel 111. (See the state below.) Figure 3 As shown.

[0050] Furthermore, the sealing block 12 sequentially comprises a sealing body 121 and an annular cylinder 122 along the pull-out direction of the plug 10. The sealing body 121 has a flow divider 123 extending into the internal space 1221 of the annular cylinder 122 along the pull-out direction of the plug 10. The side of the flow divider 123 has a first flow divider slope 1231 extending obliquely away from the side wall 1222 of the annular cylinder 122 along the pull-out direction of the plug 10. The side wall 1222 of the annular cylinder 122 also has four side flow channels 1223 that are spaced apart from each other and arranged around the flow divider 123. The side flow channels 1223 communicate with the internal space 1221 of the annular cylinder 122. Optionally, in Figure 4 In this example, four side flow channels 1223 are arranged in a circle at equal angles, such that the central angle occupied by each side flow channel 1223 is 90 degrees, so that the side flow channels 1223 are evenly distributed on the side wall 1222 of the annular cylinder 122. Of course, depending on actual needs, the number of side flow channels 1223 can also be two, three, or five. Alternatively, the side flow channels 1223 can also be arranged in a circle without equal angles, so this is not strictly necessary. Figure 4 The above is the limit.

[0051] Therefore, combining Figure 24 and Figure 25 During the insertion of plug 10 into socket 30 in the direction indicated by arrow A, socket 30 pushes sealing block 12 to slide against the elastic force of plug spring 13 in the direction of plug 10's withdrawal, thereby causing sealing block 12 to move from... Figure 24 The shown position switches from the blocking position to the position where the plug channel 111 is opened, and the socket 30 pushes the sealing block 12 to its final position. Figure 1 As shown. More specifically, as follows:

[0052] like Figures 3 to 4 ,as well as Figures 6 to 7 As shown, the sealing block 12 achieves a sealing fit with the channel wall 1111 of the plug channel 111 when in the blocking position as follows: a main body annular groove 1211 is provided on the sealing body 121, and a main body sealing ring 16 is nested in the main body annular groove 1211. The main body sealing ring 16 protrudes radially from the main body annular groove 1211, so that the main body sealing ring 16 maintains abutment with the channel wall 1111 of the plug channel 111 when in the blocking position, thereby achieving a lateral (i.e.,) seal between the sealing block 12 and the channel wall 1111 of the plug channel 111 when in the blocking position. Figure 3 The purpose of sealing is to achieve a seal in the vertical direction; of course, depending on actual needs, the sealing block 12 can be designed to be aligned with the end of the channel wall 1111 of the plug channel 111 when in the blocking position (i.e., ...). Figure 3 (Seal in the left and right directions) therefore not by Figure 3 The above is the limit.

[0053] like Figure 5 and Figure 6 As shown, the fluid divider 123 is a cone, so that the side of the fluid divider 123 forms a first diversion slope 1231. That is to say, the entire side of the fluid divider 123 forms the first diversion slope 1231, so the fluid diversion into the internal space 1221 of the annular cylinder 122 is more uniform and the flow resistance is smaller. The state of fluid diversion is shown in the figure. Figure 8 As indicated by the dashed arrow; of course, depending on actual needs, the fluid separators 123 can also be pyramids, frustums, or truncated cones, therefore, they are not considered... Figure 5 and Figure 6 As shown, each side flow channel 1223 is arranged opposite to the first diversion slope 1231, so that the fluid flowing into the internal space 1221 of the annular cylinder 122 is more smoothly diverted along the first diversion slope 1231 to the side flow channel 1223, and then flows out from the side flow channel 1223, further reducing the flow resistance of the sealing block 12 to the fluid. Specifically, in Figure 6 and Figure 7 As an example, the top of the fluid separator 123 is rounded 1232, which makes the sealing block 12 have less resistance to fluid flow.

[0054] like Figures 5 to 7 As shown, a partition 1224 is defined at the position of the side wall 1222 of the annular cylinder 122 between adjacent flow channels 1223. A reinforcing rib 124 is provided in the internal space 1221 of the annular cylinder 122, opposite to the partition 1224. The reinforcing rib 124 is fixed to the side of the distributor 123 (e.g., the first diversion slope 1231) and the partition 1224. The side of the reinforcing rib 124 facing away from the partition 1224 has a second diversion slope 1241 extending obliquely towards the partition 1224 along the pull-out direction of the plug 10. With the help of the reinforcing rib 124, on the one hand, the strength between the partition 1224 and the distributor 123 can be increased; on the other hand, with the help of the second diversion slope 1241 of the reinforcing rib 124, the fluid flowing into the internal space 1221 of the annular cylinder 122 is diverted, resulting in less flow resistance. The fluid diversion state is shown in [the diagram]. Figure 9 The dashed arrow points to... Specifically, at... Figure 5 and Figure 7 In this example, two second diversion ramps 1241 are arranged at an acute angle to each other, and the intersection 1242 of the two second diversion ramps 1241 faces away from the partition 1224. This design further reduces the resistance of the reinforcing ribs 124 to the fluid. More specifically, the intersection 1242 of the two second diversion ramps 1241 has a rounded corner smooth transition structure, as shown in the figure. Figure 7 As shown. It should be noted that... Figure 5 In the example, each partition 1224 corresponds to a reinforcing rib 124.

[0055] like Figure 3 , Figure 6 and Figure 7 As shown, the annular cylinder 122 radially (i.e. Figure 3 , Figure 6 and Figure 7 The sealing body 121 protrudes from the top and bottom of the annular cylinder 122. The outer side of the annular cylinder 122 has a first abutting slope 1226 that extends obliquely towards the channel wall 1111 of the plug channel 111 in the direction of pulling out the plug 10. The channel wall 1111 of the plug channel 111 has a corresponding second abutting slope 113. When the second abutting slope 113 is in the abutting position, it abuts against the first abutting slope 1226. With the cooperation of the first abutting slope 1226 and the second abutting slope 113, the sliding position of the sealing block 12 in the plug channel 1111 along the insertion direction of the plug 10 is restricted. In addition, the first abutting slope 1226 and the second abutting slope 113 are inclined to cooperate, so that the sealing block 12 can slide more smoothly to or away from the abutting position. It should be noted that, since the annular cylinder 122 protrudes radially from the sealing body 121, the plug channel 111 correspondingly has at least a large channel section matching the annular cylinder 122 and a small channel section matching the sealing body 1221. The small channel section is used for clearance fit with the sealing body 121, and the large channel section is used for clearance fit with the annular cylinder 122, as shown in the diagram. Figure 3 As shown.

[0056] like Figure 1 , Figure 3 , Figure 4 , Figure 24 and Figure 25 As shown, the plug 10 also includes a plug retainer 14. A fixing groove 112, located away from the sealing block 12, is provided on the channel wall 1111 of the plug channel 111. The plug retainer 14 is engaged in the fixing groove 112. One end of the plug spring 13 (e.g., Figure 3 The left end shown abuts against the end face 1225 of the annular cylinder 122 away from the sealing body 121, and the other end of the plug spring 13 (e.g. Figure 3 The right end of the sealing block 12 and the plug spring 13 abuts against the plug retaining spring 14. This design makes the assembly and disassembly of the sealing block 12 and the plug spring 13 onto the plug housing 11 more convenient, and also facilitates the removal of the sealing block 12 and the plug spring 13 from the plug housing 11. Specifically, at... Figure 3 In this example, an annular plug washer 15 is provided between the plug spring 13 and the plug retaining ring 14, so that the plug spring 13 indirectly abuts against the plug retaining ring 14 through the plug washer 15. It is understood that when the plug washer 15 is removed, the plug spring 13 directly abuts against the plug retaining ring 14, therefore... Figure 3 The above is for reference only. More specifically, at [date / time]... Figure 4In this example, the plug retainer 14 is an open-ended annular (e.g., circular) elastic strip. The cross-section of this elastic strip can be circular, elliptical, or polygonal, etc., therefore... Figure 4 The details shown are for reference only. In order to avoid the formation of steps and reduce the resistance to the fluid, the inner diameter of the plug gasket 15 is designed to be similar to the inner diameter of the plug spring 13, and the inner and outer diameters of the end face 1225 of the annular cylinder 122 away from the sealing body 121 are designed to be similar to the inner and outer diameters of the plug spring 13. Here, "similar" means approximately equal.

[0057] like Figure 1 , Figure 10 , Figure 12 , Figure 14 and Figure 15 As shown, the socket 30 includes a socket housing 31, a sealing rod assembly 32, a sealing ring 33, and a socket spring 34. The socket housing 31 has a socket channel 311. Optionally, as an example, the socket channel 311 is a circular channel to facilitate the manufacturing and processing of the socket channel 311. Of course, it can be an elliptical channel or a polygonal channel depending on actual needs. The sealing rod assembly 32, the socket spring 34, and the sealing ring 33 are sequentially arranged in the socket channel 311 along the insertion direction of the socket 10 (i.e., indicated by arrow B). The sealing rod assembly 32 is sequentially inserted into the socket spring 34 and the sealing ring 33 along the insertion direction of the socket 30. The end of the sealing rod assembly 32 away from the plug 10 is in contact with the socket spring. Under the action of the spring 34, the spring 34 keeps the spring in contact with the socket housing 31, preventing the sealing rod assembly 32 from sliding arbitrarily along the insertion or removal direction of the socket 30. The sealing ring 33 can slide in the socket channel 311 and engage with it to ensure a clearance fit between the sealing ring 33 and the socket channel 311. The socket spring 33 always has a tendency to drive the sealing ring 33 to slide to the blocking position. When the sealing ring 33 is in the blocking position, it simultaneously seals with the channel wall 3111 of the socket channel 311 and the sealing rod assembly 32 to correspondingly close the socket channel 311. See the state below. Figure 12 As shown; therefore, during the process of inserting the plug 10 into the socket 30, the sealing rod assembly 32 pushes the sealing block 12 to slide against the elastic force of the plug spring 13 in the direction of plug 30 being pulled out, and the plug housing 11 pushes the sealing ring 33 to slide against the elastic force of the socket spring 34 in the direction of plug 10 being inserted, thereby causing the sealing block 12 to switch from the blocking position to the position of opening the plug channel 111 and the sealing ring 33 to switch from the blocking position to the position of opening the socket channel 311, thereby realizing the connection between the plug channel 111 and the socket channel 311, as shown in the state. Figure 25 and Figure 1 As shown; where, in Figure 25 In the middle, the sealing block 12 has not yet been pushed into place by the sealing rod assembly 32, and the sealing ring 33 has not yet been pushed into place by the plug housing 11; while Figure 1In the middle, the sealing block 12 has been pushed into place by the sealing rod assembly 32, and the sealing ring 33 has been pushed into place by the plug housing 11. For the specific structure of the socket 10, please see the description below.

[0058] like Figure 12 , Figure 13 , Figure 22 and Figure 23 As shown, the inner wall 331 of the sealing ring 33 is provided with a plurality of spaced-apart ribs 332 arranged around the sealing rod assembly 32. The ribs 332 extend obliquely toward the inner wall 331 of the sealing ring 33 along the pull-out direction of the socket 30. This design increases the strength of the sealing ring 33 and guides the fluid, thus reducing flow resistance. Specifically, the ribs 332 are arranged in a circle at equal angles, so that the central angle occupied by each rib 332 is the same, which is 360 degrees divided by the number of ribs 332, thereby ensuring that the ribs 332 are evenly distributed on the inner wall 331 of the sealing ring 33.

[0059] like Figure 1 , Figure 12 , Figure 13 , Figure 16 , Figure 17 , Figure 24 and Figure 25 As shown, the socket housing 31 includes a socket outer shell 31a, a socket housing sleeve 31b, and a fastener 31c. The socket housing sleeve 31b is fitted into the socket outer shell 31a at the end near the plug 10 in a sealing fit, so that the mating area between the socket housing sleeve 31b and the socket outer shell 31a is sealed, reducing the risk of leakage; the side wall 31a1 of the socket outer shell 31a (see...) Figure 24 The socket housing 31b has an insertion channel 31a2, and the side wall 31b1 of the socket housing 31b has a corresponding locking groove 31b2 communicating with the insertion channel 31a2. The locking member 31c is inserted into the locking groove 31b2 through the insertion channel 31a2. The locking member 31c and the socket housing 31a together prevent the socket housing 31b from sliding on the socket housing 31a. This design facilitates the assembly of the sealing rod assembly 32, the socket spring 33 and the socket housing 31b at the socket housing 31a. Channel 311 is formed at both the socket housing 31a and the socket sleeve 31b; the end of the sealing rod assembly 32 away from the plug is kept in contact with the socket housing 31a under the action of the socket spring 33, and the end of the sealing rod assembly 32 near the plug 10 extends into the socket sleeve 31b. When the sealing ring 33 is in the blocking position, it abuts and seals against the socket sleeve 31b; therefore, during the process of the plug 10 being inserted into the socket 30, the plug housing 11 also slides into the socket sleeve 31b, as shown in the figure. Figure 1 and Figure 25 As shown. Specifically, at Figure 16 and Figure 17As an example, the side wall 31b1 of the socket housing 31b is provided with an inner ring groove 31b3 and an outer ring groove 31b4. Each of the inner ring groove 31b3 and the outer ring groove 31b4 is fitted with a sealing ring 31d. Preferably, the inner ring groove 31b3 and the outer ring groove 31b4 are arranged in two spaced-apart configurations, resulting in a total of four sealing rings 31d. This design provides double sealing and double protection on both the inner and outer sides of the socket housing 31b, effectively reducing the risk of leakage and making the fluid connector 100 of this invention suitable for bidirectional sealing applications. Of course, depending on actual needs, the number of inner ring grooves 31b3 and outer ring grooves 31b4 can be other than specified. Figure 17 The above is for reference only. Additionally, the sealing method between the socket housing 31b and the socket outer housing 31a can also be other, for example, in... Figure 12 In the socket 30, a socket washer 31e and a socket sealing ring 31f are provided between the end face 31b6 of the socket housing 31b' away from the plug 10 and the socket outer shell 31a. The socket washer 31e and the socket sealing ring 31f are arranged sequentially along the insertion direction of the socket 30. Preferably, the socket washer 31e and the socket sealing ring 31f are arranged sequentially and regularly, and the socket washer 31e and the socket sealing ring 31f are sandwiched between the end face 31b6 of the socket housing 31b' away from the plug 10 and the socket outer shell 31a. Therefore, in the blocking position, the sealing ring 33 passes through the socket washer 31e, the socket sealing ring 31f and the socket housing 31b, and the sealing ring 33 also abuts against the socket washer 31e. See the state. Figure 13 As shown; in this example, the socket washer 31e and the socket sealing ring 31f can achieve the same purpose of sealing the inner and outer sides of the socket housing 31b'. It should be noted that the fastener 31c can be a steel ball or a soft steel wire, which enters the locking groove 31b2 of the socket housing 31b through the insertion channel 31a2 on the socket housing 31a; when the fastener 31c is a steel ball, one or more can be selected, with multiple steel balls arranged in a circle, as shown in the diagram. Figure 14 and Figure 15 As shown; when the fastener 31c is a soft steel wire, it can be one or more; in addition, in Figure 17 In the socket housing 31b, a guide slope 31b5 is provided to guide the insertion of the plug housing 11.

[0060] like Figure 1 , Figures 12 to 15 ,as well as Figures 18 to 20 As shown, the sealing rod assembly 32 includes a rod seat 321, a sealing rod 322, and a sealing ring 323. The sealing rod 322 includes a rod body 3221 and a radial (see...) Figure 18 and Figure 19The rod head 3222 protrudes from the rod body 3221 (vertically). The end of the rod body 3221 away from the rod head 3222 is detachably connected to the rod seat 321, so that the sealing rod 322 and the rod seat 321 are detachable. This facilitates the separate processing of the sealing rod 322 and the rod seat 321 without mutual constraint, thus making it convenient. Figure 21 The notch 3212 of the rod holder 321' shown is fabricated. Of course, depending on actual needs, the rod holder 321 and the rod body 3221 can also be made into a non-detachable assembly connection. At the same time, the rod head 3222 has an embedded annular groove 3225, and the sealing ring 323 is fitted into the embedded annular groove 3225. The sealing ring 323 also protrudes radially from the rod head 3222, so that when in the blocking position, the rod head 3222 can reliably seal with the inner side of the sealing ring 33 by means of the sealing ring 322. Specifically, in Figures 18 to 20 As an example, the sealing rod assembly 32 further includes a first retaining spring 324 and a second retaining spring 325. A through hole 3211 is provided in the middle of the rod seat 321. The end of the rod body 3221 away from the rod head 3222 is inserted into the through hole 3211. A first retaining groove 3223 and a second retaining groove 3224 are provided at the end of the rod body 3221 away from the rod head 3221. The first retaining spring 324 is engaged in the first retaining groove 3223 and is located on the side of the rod seat 321 facing the rod head 3222 (e.g., ...). Figure 19 The left side of the middle) abuts, the second retaining spring 325 is engaged in the second retaining groove 3224 and is on the side of the rod seat 321 opposite to the rod head 3222 (such as the left side of the middle) Figure 19 The right side of the sealing rod 322 abuts against the seat 321, so that the first retaining ring 324 and the second retaining ring 325 together prevent the sealing rod 322 from sliding axially relative to the seat 321; this design makes the installation and removal of the sealing rod 322 and the seat 321 more convenient. More specifically, in Figure 19 In this example, the shaft seat 321 has a recessed hole 3213 on the side opposite to the shaft head 3222 for enlarging the through hole 3211 and surrounding the shaft body 3221. The first retaining spring 324 is located in the recessed hole 3213. This design recesses the first retaining spring 324 into the shaft seat 321, preventing the shaft body 3221 from protruding from the shaft seat 321 along the axial direction away from the shaft head 3222 and causing a protrusion obstruction. For example, in Figure 20 In this configuration, the first retaining ring 324 and the second retaining ring 325 are each annular springs open at both ends, but this is not a limitation. Among them, in... Figure 21 In the process, according to actual needs, three notches 3212 are provided on the rod holder 321'. The three notches 3212 are arranged in a spaced-apart manner around the center line 3213 of the rod holder 321'. Preferably, all the notches 3212 are arranged in a centrally symmetrical manner with the center line 3213 as the center. This can increase the fluid flow area and effectively improve the flow capacity of the socket 30. Of course, according to actual needs, the number of notches 3212 can also be one, two, or four, so it is not limited to one. Figure 21As shown, the sealing rod 322 can be disassembled into a component or made into a single part.

[0061] like Figure 12 , Figure 13 and Figure 24 As shown, the socket 10 also includes a retaining spring 35. The socket channel 311 is located on the channel wall 3111 of the socket housing 31a, and a retaining ring groove 3112 is provided. The retaining spring 35 is engaged in the retaining ring groove 3112. The retaining spring 35 and the socket housing 31a together clamp the rod seat 321 so that the sealing rod assembly 32 can be detachably fixed to the socket housing 31a. It should be noted that when the socket 30 needs a self-releasing pressure function, the retaining spring 35 and the retaining ring groove 3112 can be removed. That is, the end of the sealing rod assembly 32 away from the plug 10 (specifically the rod seat 321) is protected by the socket spring 34 and is in contact with the socket housing 31 (specifically the socket housing 31a), thus realizing the self-releasing pressure function of the socket 30.

[0062] like Figure 1 , Figures 11 to 15 ,as well as Figures 24 to 25 As shown, the socket 30 also includes a button 36 mounted on the socket housing 31 and switchable between a locked position and an unlocked position, and a button spring 37 that constantly drives the button 36 to the locked position. The outer surface of the plug housing 11 has a push-in inclined surface 114 and a locking surface 115 arranged sequentially along the pull-out direction of the plug 10. The push-in inclined surface 114 extends outwardly along the pull-out direction of the plug 10, and the button 36 is correspondingly provided with a receiving inclined surface 361. Therefore, during the process of inserting the plug 10 into the socket 30, the locking surface 115 passes over the button 36 by the push-in inclined surface 114 against the receiving inclined surface 361. Then, under the action of the button spring 37, the button 36 locks with the locking surface 115 to prevent the plug 10 from separating, thus making the locking of the plug 10 and the socket 30 more convenient because the operator does not need to operate the button 36. Specifically, in Figure 11 , Figure 14 and Figure 15 As an example, button 36 is mounted on socket housing 31a in a first direction intersecting with the insertion direction of socket 30, and button 36 is provided with barb 362, so that button 36 is hooked on socket housing 31a by means of barb 362, preventing button 36 from falling off socket housing 31a under the action of button spring 37. In addition, button 36 is provided with a channel 363 that passes through plug housing 11, and the channel 363 is opposite to the socket channel 311 at socket housing 31b.

[0063] Referring to the attached diagram, the insertion or disengagement of the plug 10 and the socket 30 is explained as follows: Figure 24As shown, during the insertion of the plug 10 into the socket 30 in the direction indicated by arrow A, the plug housing 11 smoothly slides into the socket housing 31b on the guide slope 31b5. During this process, the plug housing 11 also pushes against the sealing ring 33 to overcome the elastic force of the socket spring 34, and the rod head 3222 of the sealing rod 32 pushes against the sealing block 12 to overcome the elastic force of the plug spring 13. When the plug 10 continues to be inserted in the direction indicated by arrow A until the pushing slope 114 on the plug housing 11 and the pushing slope 361 of the button 36 are in contact... Figure 25 When the push position is shown, the state of the sealing block 12 and the sealing ring 33 is as follows: Figure 24 As shown, at this time, the plug 10 continues to slide in its original direction, causing the locking surface 115 on the plug housing 11 to pass over the button 36 and lock into place with the button 36, thus locking the plug 10 and the socket 30 together. During locking, the final position of the sealing block 12 pushed and slid by the rod head 3222 and the final position of the sealing ring 33 pushed and slid by the plug housing 11 are shown in the figure. Figure 1 As shown. When releasing the lock, press button 36. The plug 10 is unobstructed and automatically separates under the action of socket spring 34 and plug spring 13. That is, plug spring 13 pushes socket 30 away from plug 10 through sealing block 12, and socket spring 34 pushes plug 10 away from socket 30 through sealing ring 33.

[0064] Compared with the prior art, the sealing body 121 has a flow divider 123 extending into the internal space 1221 of the annular cylinder 122 along the pull-out direction of the plug 10. The side of the flow divider 123 has a first flow divider slope 1231 extending obliquely away from the side wall 1222 of the annular cylinder 122 along the pull-out direction of the plug 10. The side wall 1222 of the annular cylinder 122 is also provided with a plurality of side flow channels 12 that are spaced apart from each other and arranged together around the flow divider 123. 23. The side flow channel 1223 is connected to the internal space 1221 of the annular cylinder 122. This design allows the fluid flowing into the internal space 1221 of the annular cylinder 122 to be diverted to the side flow channel 1223 under the action of the diverting fluid 123, and then flow out of the internal space 1221 of the annular cylinder 122 through the side flow channel 1223, effectively reducing the resistance of the sealing block 12 to the fluid. In addition, under the same orifice diameter, the structure of the sealing block 12 will greatly reduce the flow resistance.

[0065] It should be noted that since the plug 10 and the socket 30 can be plugged in and unplugged, the insertion direction of the plug 10 is exactly the same as the unplugging direction of the socket 30, that is, the direction indicated by arrow A in the attached figure, and the insertion direction of the plug 10 is exactly the same as the insertion direction of the socket 30, that is, the direction indicated by arrow B in the attached figure.

[0066] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A low-flow-resistance fluid connector comprising a pluggable plug and a receptacle, the plug including a plug housing, a sealing block, and a plug spring, the plug housing having a plug channel, the sealing block and the plug spring being sequentially disposed within the plug channel along the plug-out direction, the plug spring having a constant tendency to drive the sealing block to slide to a blocking position along the plug-in direction, the sealing block, in the blocking position, abutting and sealingly engaging with the channel wall of the plug channel to correspondingly close the plug channel, characterized in that... The sealing block comprises a sealing body and an annular cylinder connected in sequence along the plug-out direction. The sealing body has a flow divider extending into the internal space of the annular cylinder along the plug-out direction. The side of the flow divider has a first flow divider inclined surface extending obliquely away from the side wall of the annular cylinder along the plug-out direction. The side wall of the annular cylinder is also provided with a plurality of side flow channels that are spaced apart from each other and arranged around the flow divider. The side flow channels communicate with the internal space of the annular cylinder. During the process of the plug being inserted into the socket, the socket pushes the sealing block to slide against the elastic force of the plug spring along the plug-out direction, thereby switching the sealing block from the blocking position to the position of opening the plug channel. The annular cylinder has a partition defined by the position of its side wall between two adjacent side flow channels. The annular cylinder has a reinforcing rib opposite to the partition in its internal space. The reinforcing rib is fixed to the side of the flow divider and the partition. The side of the reinforcing rib facing away from the partition has a second flow divider inclined surface that extends inclined toward the partition along the pull-out direction of the plug. There are two second diversion ramps, and the intersection of the two second diversion ramps faces away from the partition.

2. The low-flow-resistance fluid connector according to claim 1, characterized in that, The flow divider is a platform or a cone, and the side of the platform or cone forms the first flow divider slope. Each of the side flow channels is arranged opposite to the first flow divider slope.

3. The low-flow-resistance fluid connector according to claim 1, characterized in that, The two second diversion ramps are arranged at an acute angle.

4. The low-flow-resistance fluid connector according to claim 1, characterized in that, The plug also includes a plug retainer spring. A fixing groove is provided on the channel wall of the plug channel away from the sealing block. The plug retainer spring is engaged in the fixing groove. One end of the plug spring abuts against the end face of the annular cylinder away from the sealing body, and the other end of the plug spring abuts against the plug retainer spring.

5. The low-flow-resistance fluid connector according to claim 1, characterized in that, The annular cylinder protrudes radially from the sealing body. The outer side of the annular cylinder has a first abutting slope extending obliquely towards the channel wall of the plug channel along the pull-out direction of the plug. The channel wall of the plug channel has a corresponding second abutting slope. The second abutting slope cooperates with the first abutting slope when in the abutting position.

6. The low-flow-resistance fluid connector according to claim 1, characterized in that, The socket includes a socket shell, a sealing rod assembly, a sealing ring, and a socket spring. The socket shell has a socket channel. The sealing rod assembly, socket spring, and sealing ring are sequentially arranged in the socket channel along the insertion direction of the socket. The sealing rod assembly is sequentially inserted into the socket spring and the sealing ring along the insertion direction of the socket. The end of the sealing rod assembly away from the plug is kept in contact with the socket shell under the action of the socket spring. The sealing ring can slide and engage with the socket channel in the socket channel. The socket spring always has a tendency to drive the sealing ring to slide to a blocking position. The sealing ring is in the blocking position. Simultaneously, the plug engages with the channel wall of the socket channel and the sealing rod assembly to seal and close the socket channel. During the insertion of the plug into the socket, the sealing rod assembly pushes the sealing block along the plug's pull-out direction to overcome the spring force of the plug spring, and the plug housing pushes the sealing ring along the plug's insertion direction to overcome the spring force of the socket spring. This causes the sealing block to switch from the blocking position to the position of opening the plug channel, and the sealing ring to switch from the blocking position to the position of opening the socket channel, thereby achieving communication between the plug channel and the socket channel.

7. The low-flow-resistance fluid connector according to claim 6, characterized in that, The inner wall of the sealing ring is provided with a plurality of raised ribs that are spaced apart from each other and arranged together around the sealing rod assembly. The raised ribs extend obliquely toward the inner wall of the sealing ring along the pull-out direction of the socket.

8. The low-flow-resistance fluid connector according to claim 6, characterized in that, The socket housing includes a socket outer shell, a socket housing sleeve, and a locking device. The socket housing sleeve is fitted into the socket outer shell at the end near the plug in a sealing fit. An insertion channel is formed on the side wall of the socket outer shell, and a locking groove corresponding to the insertion channel is formed on the side wall of the socket housing sleeve. The locking device is inserted into the locking groove through the insertion channel. The locking device, together with the socket outer shell, prevents the socket housing sleeve from sliding on the socket outer shell. The socket channel is formed at both the socket outer shell and the socket housing sleeve. The end of the sealing rod assembly away from the plug remains in contact with the socket outer shell under the action of the socket spring. The end of the sealing rod assembly near the plug extends into the socket housing sleeve. The sealing ring, in the blocking position, abuts and seals against the socket housing sleeve. During the insertion of the plug into the socket, the plug housing also slides into the socket housing sleeve.

9. The low-flow-resistance fluid connector according to claim 8, characterized in that, The sealing rod assembly includes a rod seat, a sealing rod, and a sealing ring. The sealing rod includes a rod body and a rod head that protrudes radially from the rod body. The end of the rod body away from the rod head is detachably or non-detachably assembled with the rod seat. An embedded annular groove is formed on the rod head, and the sealing ring is fitted into the embedded annular groove. The sealing ring also protrudes radially from the rod head.

10. The low-flow-resistance fluid connector according to claim 9, characterized in that, The socket also includes a retaining spring. A retaining ring groove is provided on the channel wall of the socket channel located at the socket housing. The retaining spring is engaged in the retaining ring groove. The retaining spring and the socket housing together clamp the rod seat.

11. The low-flow-resistance fluid connector according to claim 9, characterized in that, The sealing rod assembly also includes a first retaining spring and a second retaining spring. A through hole is provided in the middle of the rod seat. The end of the rod body away from the rod head is inserted into the through hole. A first retaining groove and a second retaining groove are provided in the end of the rod body away from the rod head. The first retaining spring is engaged in the first retaining groove and abuts against the side of the rod seat facing the rod head. The second retaining spring is engaged in the second retaining groove and abuts against the side of the rod seat away from the rod head, so that the first retaining spring and the second retaining spring together prevent the sealing rod from sliding axially relative to the rod seat.

12. The low-flow-resistance fluid connector according to claim 11, characterized in that, The rod holder has one or more notches; when there are multiple notches, the multiple notches are arranged in a spaced manner around the center line of the rod holder, and a recessed hole is provided on the side of the rod holder opposite to the rod head for enlarging the through hole and surrounding the rod body, and the first retaining spring is located in the recessed hole.

13. The low-flow-resistance fluid connector according to claim 6, characterized in that, The socket further includes a button mounted on the socket housing and switchable between a locked position and an unlocked position, and a button spring that constantly drives the button to switch to the locked position. The outer surface of the plug housing has a push-up slope and a locking surface arranged sequentially along the plug's pull-out direction. The push-up slope extends outwardly along the plug's pull-out direction, and the button is correspondingly provided with a receiving slope. During the process of the plug being inserted into the socket, the locking surface passes over the button by the push-up slope against the receiving slope, and the button locks into the locking surface under the action of the button spring.

14. The low-flow-resistance fluid connector according to claim 8, characterized in that, The socket housing has an inner ring groove and an outer ring groove on its side wall, and each of the inner ring groove and the outer ring groove is fitted with a sealing ring; or, a socket washer and a socket sealing ring are provided between the end face of the socket housing away from the plug and the socket outer shell, the socket washer and the socket sealing ring are arranged sequentially along the insertion direction of the socket, and the socket washer and the socket sealing ring are sandwiched between the end face of the socket housing away from the plug and the socket outer shell, and the sealing ring passes through the socket washer, the socket sealing ring and the socket housing when the blocking position is reached, and the sealing ring also abuts against the socket washer when the blocking position is reached.

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