Cylinder Connector

Abstract

The present invention discloses a through-cylinder connector, which solves the technical problem of low sealing performance of existing through-cylinder connectors. The present invention includes a plug-sheath assembly, a terminal assembly and a plug-rod assembly, wherein the plug-sheath assembly includes a sheath assembly and a clip assembly connected to the sheath assembly, a first-level seal is formed between the plug sheath of the sheath assembly and the clip assembly, between the terminal assembly and the clip of the clip assembly, and between the plug-rod assembly and the clip, and a second-level seal is formed between the plug sheath assembly and the terminal assembly. The present invention provides a through-cylinder connector with two relatively independent and complementary sealing systems inside, which reduces the pressure borne by a single sealing system, reduces the risk of oil leakage due to the seal, and ensures the sealing performance of the through-cylinder connector.

Description

Technical Field

[0001] The invention relates to the technical field of automobile connectors, in particular to a cylinder-penetrating connector. Background Art

[0002] The engine or reducer is one of the most important parts of a car. As the power source of the car, it has a vital impact on the performance of the whole vehicle. The engine or reducer of the car, especially the temperature of the engine and its vicinity, is very high, and there is a large amount of oil medium inside. Because the engine or reducer generates severe vibration when it is working, and the occasional vibration caused by the road surface during driving can also be very serious. There are many oil stains, dust and sewage in the engine compartment. If these pollutants penetrate into the cylinder connector, they will cause pollution and damage to the cylinder connector and the engine. The high temperature, oily and violent vibration environment has almost harsh requirements on the sealing performance of the cylinder connector. Therefore, the sealing performance of the cylinder connector will be one of the comprehensive performance indicators for evaluating the engine or reducer. The sealing of the cylinder connector includes the sealing between the connectors, the sealing between the connector and the cylinder body, and the sealing of the terminal. Among them, the sealing of the terminal is the most important link, and various factors must be fully considered to design a terminal sealing structure with excellent performance.

[0003] After searching, the existing utility model patent with authorization announcement date of 2017.10.20 and authorization announcement number CN206574973U discloses a diesel engine cylinder connector, including a male pin assembly, a connector housing, a female head assembly, a rotating lock ring and a fixed retaining spring. The male pin assembly is inserted into the input end of the connector housing, and the female head assembly is inserted into the output end of the connector housing. The male pin assembly and the female head assembly are butt-jointed in the connector housing; a spiral groove is provided on the outer wall surface of the output end of the connector housing, a screw-connected boss is provided on the inner wall of the rotating lock ring, and the rotating lock ring is screwed with the connector housing; a retaining spring slot is provided on the connector housing, and the fixed retaining spring is clamped with the connector housing. The connector housing of the diesel engine cylinder connector is provided with a retaining spring slot, and a fixed retaining spring is clamped on the connector housing. The fixed retaining spring is installed on the engine isolation cover and is used to fix the connector housing to prevent the connector housing from loosening or falling off when it is vibrated, which is beneficial to driving safety. This patent discloses the basic structural components of the through-rigid connector, and its purpose is to provide a technical solution for connecting the male pin assembly and the female head assembly and the connector housing and the engine, but it does not solve its sealing problem. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a through-cylinder connector, which solves the technical problem of low sealing performance of the existing through-cylinder connector.

[0005] The technical solution of the present invention is implemented as follows: a through-cylinder connector includes a plug sleeve assembly, a terminal assembly and a blocking rod assembly, the plug sleeve assembly includes a sleeve assembly and a clip assembly connected to the sleeve assembly, a first-level seal is formed between the plug sleeve of the sleeve assembly and the clip assembly, between the terminal assembly and the clip of the clip assembly, and between the blocking rod assembly and the clip, and a second-level seal is formed between the plug sleeve assembly and the terminal assembly.

[0006] Furthermore, the sheath assembly includes a plug sheath and a sealing gasket arranged in the plug sheath, and the plug sheath is sealed and connected to the terminal assembly and the plug rod assembly through the sealing gasket.

[0007] Furthermore, the sealing gasket includes a stepped outer edge portion and a columnar portion, a through hole is opened in the columnar portion, a mounting hole with an interference fit with the columnar portion is provided in the plug sheath, the hole edge plane of the mounting hole is in contact with the stepped outer edge portion, and the terminal assembly and the blocking rod assembly are interference fit with the through hole.

[0008] Furthermore, the clip assembly includes a clip connected to the plug sleeve through a spring tongue structure, the clip is provided with an anti-error rib that matches the anti-error groove on the plug sleeve, the outer wall of the clip is provided with a clip sealing ring, the clip is interference fit with the inner wall of the plug sleeve through the clip sealing ring, a socket corresponding to the through hole is opened in the clip, the outer wall of the terminal assembly is provided with a terminal sealing ring, the outer wall of the blocking rod assembly is provided with a blocking rod sealing ring, and both the terminal sealing ring and the blocking rod sealing ring are interference fit with the corresponding socket.

[0009] Furthermore, an annular protrusion is provided on the top of the clamp, and the annular protrusion forms an end face seal with the outer edge of the step and the plane of the hole edge.

[0010] Furthermore, a truncated cone-shaped spring wing is provided at the end of the socket, and the diameter of the spring wing gradually decreases along the insertion direction of the clip. The spring wing includes two symmetrically arranged spring pieces, and the cross-section of the spring piece is a circular ring segment. The terminal assembly and the blocking rod assembly both include a hanging portion that cooperates with the spring wing.

[0011] Furthermore, a terminal hole is provided in the plug sheath and is located in front of the through hole and corresponds to the through hole. The diameter of the terminal hole is larger than the diameter of the through hole. A terminal hole opening is provided at the top of the terminal hole. The terminal assembly includes a plug-in portion and a limiting portion connected in sequence. The plug-in portion is inserted in the terminal hole opening. The diameter of the limiting portion is larger than the diameter of the through hole and is inserted in the terminal hole. A chamfer is provided at a position of the limiting portion close to the plug-in portion and / or at the top of the plug-in portion.

[0012] Furthermore, the limiting portion is sequentially connected to a secondary sealing portion of the terminal, a terminal hanging portion, a primary sealing portion of the terminal and a terminal crimping portion, the secondary sealing portion of the terminal includes at least one protruding structure with a circular cross section and a symmetrical curved longitudinal section, the terminal assembly is interference fit with the through hole through the protruding structure, the terminal hanging portion includes a front boss, a rear boss and a connecting column between the two bosses, the diameter of the front boss is larger than the diameter of the front end surface of the spring wing and smaller than the diameter of the socket, the spring wing is clamped between the front boss and the rear boss, the primary sealing portion of the terminal includes an outer groove, and the terminal sealing ring is arranged in the outer groove.

[0013] Furthermore, the blocking rod assembly includes a blocking rod secondary sealing part, a blocking rod hanging part, a blocking rod primary sealing part and a rod handle. The blocking rod secondary sealing part includes at least one section of a protruding structure with a circular cross section and a symmetrical curved longitudinal section. The blocking rod assembly is interference fit with the through hole through the protruding structure. The blocking rod hanging part includes a front boss, a rear boss and a connecting column between the two bosses. The diameter of the front boss is larger than the diameter of the front end surface of the spring wing and smaller than the diameter of the insertion hole. The spring wing is clamped between the front boss and the rear boss. The blocking rod primary sealing part includes an outer groove, and the blocking rod sealing ring is arranged in the outer groove.

[0014] Furthermore, in the terminal assembly and the plugging rod assembly, the diameter of the front boss is smaller than the diameter of the rear boss, and the front end surface of the front boss is provided with a chamfer.

[0015] The present invention provides a cylinder-penetrating connector with two relatively independent and complementary sealing systems inside, which reduces the pressure on a single sealing system, reduces the risk of oil leakage due to the seal, and ensures the sealing performance of the cylinder-penetrating connector. The specific beneficial effects are:

[0016] (1) After the through-cylinder connector is assembled, the terminal assembly and the plug assembly can be inserted into the plug sheath and the clip assembly. Compared with the glue sealing method, the assembly method is flexible, simple and quick to operate.

[0017] (2) After the terminal assembly is inserted into the plug sheath, the plug-in area, sealing area, hanging area and wire crimping area are all subject to circumferential restrictions to prevent circumferential movement of the terminal. The sealing area and hanging area of ​​the terminal are subject to axial restrictions of the electrical connector to prevent axial movement of the terminal.

[0018] (3) The terminal sealing ring and the plug sealing ring are both interference fit with the corresponding jacks. The clip is interference fit with the inner wall of the plug sheath through the clip sealing ring. The part with a diameter larger than the inner diameter of the rubber terminal channel will completely fit with the rubber body. The annular protrusion forms an end face seal with the outer edge of the step and the plane of the hole edge. Compared with the traditional plugging sealing method, the rubber material can better accommodate the terminal, the sealing contact area is large, and the sealing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

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

[0021] Figure 2 for Figure 1 Exploded diagram of

[0022] Figure 3 for Figure 1 A cross-sectional view of

[0023] Figure 4 for Figure 1 Bottom view of

[0024] Figure 5 for Figure 4 Side view of

[0025] Figure 6 is a cross-sectional view of the sheath assembly;

[0026] Figure 7 This is the axonometric view of the terminal;

[0027] Figure 8 for Figure 7 A cross-sectional view of

[0028] Fig. 9 It is a cross-sectional view of the plugging rod assembly. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] A through-cylinder connector, such as Figure 1-Figure 3 As shown, it includes a plug shield assembly, a terminal assembly 2-1 and a plug rod assembly 3-1, wherein the plug shield assembly includes a shield assembly 1-1 and a clip assembly 1-2 connected to the shield assembly 1-1. A first-level seal is formed between the plug shield 1-1-1 of the shield assembly 1-1 and the clip assembly 1-2, between the terminal assembly 2-1 and the clip 1-2-1 of the clip assembly 1-2, and between the plug rod assembly 3-1 and the clip 1-2-1, and a second-level seal is formed between the plug shield assembly and the terminal assembly 2-1.

[0031] like Figure 2 As shown, the sheath assembly 1-1 includes a plug sheath 1-1-1 and a sealing gasket 1-1-2 disposed in the plug sheath 1-1-1, and the clip 1-2-1 is inserted into the insertion sheath 1-1-1 and the end portion presses the sealing gasket 1-1-2 into the plug sheath 1-1-1. Figure 3 As shown, the plug sheath 1-1-1 is sealed and connected to the terminal assembly 2-1 and the blocking rod assembly 3-1 through the sealing gasket 1-1-2, and the terminal assembly 2-1 and the blocking rod assembly 3-1 are both sealed and connected to the clip 1-2-1.

[0032] Specifically, Figure 1 and Figure 5 As shown, the outer side of the upper end of the plug sheath 1-1-1 is provided with three slideways 108 distributed at 120 degrees, and the matching socket sheath is provided with bosses corresponding to the three slideways 108. When the socket sheath is rotated, the bosses move along the slideways 108 until they are locked. On the lower side of the slideway 108, a fixing groove 109 is provided on each side of the plug sheath 1-1-1, and a steel clip is provided in the fixing groove 109. The plug sheath 1-1-1 is fixed to the cylinder body of the engine or reducer with the steel clip. A sealing groove 104 is provided at the lower part of the fixing groove 109, and a sheath sealing ring 1-1-3 is provided in the sealing groove 104. The plug sheath 1-1-1 is sealed with the cylinder body of the engine or reducer through the sheath sealing ring 1-1-3.

[0033] like Figure 1 As shown, the outer wall of the plug sheath 1-1-1 is provided with an anti-mistake platform 110, and the corresponding engine cylinder block or reducer is provided with an anti-mistake groove adapted to the anti-mistake platform 110. Figure 3 and Figure 5 As shown, a terminal holder is provided inside the plug sheath 1-1-1, and a plurality of terminal holes 107 are provided on the terminal holder. A terminal hole opening 101 is provided at the top of the terminal hole 107, and the bottoms of all the terminal holes 107 are connected to the same mounting hole 102, and the sealing gasket 1-1-2 is installed in the mounting hole 102. The sealing gasket 1-1-2 includes a step outer edge portion 113 and a columnar portion 112, and the columnar portion 112 is interference-fitted with the mounting hole 102, and the hole edge plane 103 of the mounting hole 102 is in contact with the step outer edge portion 113. A through hole 111 is provided in the columnar portion 112, and the through hole 111 is opposite to the terminal hole 107 in upper and lower directions, and the terminal assembly 2-1 and the plug assembly 3-1 are interference-fitted with the through hole 111.

[0034] like Figure 1 and Figure 5As shown, at least two hanging holes 105 are provided at the lower end of the plug sheath 1-1-1. The hanging holes 105 penetrate the side wall of the plug sheath 1-1-1 and are arranged in the circumferential direction of the plug sheath 1-1-1. An anti-error groove 106 is provided on the inner wall of the plug sheath 1-1-1. Figure 6 As shown, the clamp assembly 1-2 includes a clamp 1-2-1 which is cylindrical in shape as a whole, and a chamfer is provided on the top periphery of the clamp 1-2-1 to facilitate the insertion of the clamp 1-2-1 into the plug sheath 1-1-1. Figure 3 and Figure 4 As shown, the outer wall of the clip 1-2-1 is provided with a spring tongue 123 adapted to the hanging hole 105 and an anti-error rib 125 engaged with the anti-error groove 106. Figure 3 and Figure 6 As shown, the outer wall of the clip 1-2-1 is provided with a circumferential groove 122 near the top of the spring tongue 123, and the clip sealing ring 1-2-2 is provided in the circumferential groove 122. The clip 1-2-1 is interference-fitted with the inner wall of the plug sheath 1-1-1 through the clip sealing ring 1-2-2. A plug hole corresponding to the through hole 111 is provided in the clip 1-2-1, a terminal sealing ring 2-2 is provided on the outer wall of the terminal assembly 2-1, and a plug sealing ring 3-2 is provided on the outer wall of the plug assembly 3-1. Both the terminal sealing ring 2-2 and the plug sealing ring 3-2 are interference-fitted with the corresponding plug holes.

[0035] Furthermore, if Figure 3 and Figure 6 As shown, an annular protrusion 121 is provided on the top of the clip 1-2-1. When the spring tongue 123 is installed in the hanging hole 105 and the anti-error rib 125 is installed in the anti-error groove 106, the annular protrusion 121 presses the stepped outer edge portion 113 of the sealing gasket 1-1-2 onto the hole edge plane 103 to form an end face seal.

[0036] like Figure 3 and Figure 6 As shown, the end of the insertion hole of the clip 1-2-1 is provided with a truncated cone-shaped elastic wing 124, and the diameter of the elastic wing 124 gradually decreases along the direction in which the clip 1-2-1 is inserted into the plug sheath 1-1-1. The elastic wing 124 includes two symmetrically arranged elastic pieces, and the cross section of the elastic piece is a circular ring segment. The terminal assembly 2-1 and the blocking rod assembly 3-1 both include a hanging part that is hung and matched with the elastic wing 124. When the terminal assembly 2-1 and the blocking rod assembly 3-1 are inserted into the clip 1-2-1 and are in place, the elastic wing 124 is hung and matched with the hanging part.

[0037] like Figure 7 and Figure 8 As shown, the terminal assembly 2-1 includes a plug-in portion 201 and a stop portion 202 connected in sequence. Figure 3 and Figure 5As shown, the top of the terminal hole 107 of the plug sheath 1-1-1 is provided with a terminal hole opening 101. Figure 3 As shown, after the terminal assembly 2-1, the clip 1-2-1 and the plug sheath 1-1-1 are assembled, the plug-in portion 201 is inserted into the terminal hole opening 101, and the limiting portion 202 is inserted into the terminal hole 107. The limiting portion 202 is provided with chamfers at the position close to the plug-in portion 201 and at the top of the plug-in portion 201. The chamfers provided at the position close to the plug-in portion 201 of the limiting portion 202 can form a seal with the terminal hole opening 101, preventing the terminal assembly 2-1 from continuing to move inward along the axial direction. The chamfers provided at the top of the plug-in portion 201 are convenient for the terminal assembly 2-1 to be inserted into the clip 1-2-1 and the plug sheath 1-1-1, and are also convenient for the plug-in portion 201 to penetrate into the female terminal.

[0038] Furthermore, if Figure 3 and Figure 5 As shown, the diameter of the terminal hole 107 in the plug sheath 1-1-1 is larger than the diameter of the through hole 111 in the sealing gasket 1-1-2, the diameter of the limiting portion 202 is larger than the diameter of the through hole 111, the limiting portion 202 is truncated, and the diameter of the limiting portion 202 gradually decreases along the insertion direction. When the limiting portion 202 of the terminal assembly 2-1 passes through the through hole 111, the limiting portion 202 entering the terminal hole 107 forms a hanging structure with the front end surface of the through hole 111 to prevent the terminal assembly 2-1 from retreating.

[0039] Furthermore, if Figure 7 and Figure 8 As shown, the limiting part 202 is sequentially connected with the terminal secondary sealing part 203, the terminal hanging part 204, the terminal primary sealing part 205 and the terminal crimping part 206. The terminal secondary sealing part 203 includes two sections of raised structures with circular cross sections and symmetrical curved longitudinal sections. The terminal assembly 2-1 is interference-fitted with the through hole 111 in the sealing gasket 1-1-2 through the raised structures. The terminal primary sealing part 205 includes an outer groove, and the terminal sealing ring 2-2 is arranged in the outer groove.

[0040] The terminal hanging part 204 includes a front boss, a rear boss and a connecting column between the two bosses. The diameter of the front boss is larger than the diameter of the front end face of the elastic wing 124 and smaller than the diameter of the jack. After assembly, the elastic wing 124 is clamped between the front boss and the rear boss. When the terminal assembly 2-1 is inserted into the sheath assembly 1-1, the terminal hanging part 204 gradually opens the elastic wing 124 of the clip 1-2-1. After the front boss of the terminal hanging part 204 completely passes through the elastic wing 124, the elastic wing 124 returns to its original state, and the terminal limiting part 202 is blocked by the terminal hole opening 101 of the plug sheath 1-1-1, preventing the terminal assembly 2-1 from continuing to move inward in the axial direction. When the rear end face of the front boss contacts the front end face of the elastic wing 124, the terminal assembly 2-1 will not be able to continue to move outward in the axial direction.

[0041] like Figure 3 and Fig. 9 As shown, the blocking rod assembly 3-1 includes a blocking rod secondary sealing part 301, a blocking rod hanging part 302, a blocking rod primary sealing part 303 and a rod handle 304. The blocking rod secondary sealing part 301 includes at least one section of a protruding structure with a circular cross section and a symmetrical curved longitudinal section. The blocking rod assembly 3-1 is interference-fitted with the through hole 111 through the protruding structure. The blocking rod hanging part 302 includes a front boss, a rear boss and a connecting column between the two bosses. The diameter of the front boss is larger than the diameter of the front end surface of the elastic wing 124 and smaller than the diameter of the jack. The elastic wing 124 is clamped between the front boss and the rear boss. The blocking rod primary sealing part 303 includes an outer groove, and the blocking rod sealing ring 3-2 is arranged in the outer groove. The assembly effect of the blocking rod assembly 3-1 is the same as the assembly effect of the corresponding structure of the terminal assembly 2-1.

[0042] Furthermore, in the terminal assembly 2-1 and the blocking rod assembly 3-1, the diameter of the front boss is smaller than the diameter of the rear boss, and the front end surface of the front boss is provided with a chamfer to facilitate the front boss of the terminal assembly 2-1 and the blocking rod assembly 3-1 to pass through the elastic wing 124.

[0043] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A through-cylinder connector, comprising a plug sheath assembly, a terminal assembly (2-1) and a plug assembly (3-1), characterized in that: The plug shield assembly comprises a shield assembly (1-1) and a clip assembly (1-2) connected to the shield assembly (1-1); a first-level seal is formed between the plug shield (1-1-1) and the clip assembly (1-2) of the shield assembly (1-1), between the terminal assembly (2-1) and the clip (1-2-1) of the clip assembly (1-2), and between the plug rod assembly (3-1) and the clip (1-2-1); and a second-level seal is formed between the plug shield (1-1-1) and the terminal assembly (2-1); The sheath assembly (1-1) comprises a plug sheath (1-1-1) and a sealing gasket (1-1-2) arranged in the plug sheath (1-1-1); the plug sheath (1-1-1) is sealedly connected to the terminal assembly (2-1) and the plug rod assembly (3-1) via the sealing gasket (1-1-2); The sealing gasket (1-1-2) comprises a stepped outer edge portion (113) and a columnar portion (112); a through hole (111) is provided in the columnar portion (112); a mounting hole (102) which is interference-fitted with the columnar portion (112) is provided in the plug sheath (1-1-1); a hole edge plane (103) of the mounting hole (102) is in contact with the stepped outer edge portion (113); and the terminal assembly (2-1) and the plug assembly (3-1) are interference-fitted with the through hole (111); The clip assembly (1-2) comprises a clip (1-2-1) connected to a plug sleeve (1-1-1) via a spring tongue structure; the clip (1-2-1) is provided with an anti-error rib (125) adapted to an anti-error groove (106) on the plug sleeve (1-1-1); the outer wall of the clip (1-2-1) is provided with a clip sealing ring (1-2-2); the clip (1-2-1) is interference-fitted with the inner wall of the plug sleeve (1-1-1) via the clip sealing ring (1-2-2); a plug hole corresponding to the through hole (111) is provided in the clip (1-2-1); the outer wall of the terminal assembly (2-1) is provided with a terminal sealing ring (2-2); the outer wall of the plug rod assembly (3-1) is provided with a plug rod sealing ring (3-2); and both the terminal sealing ring (2-2) and the plug rod sealing ring (3-2) are interference-fitted with the corresponding plug holes; The top of the clip (1-2-1) is provided with an annular protrusion (121), and the annular protrusion (121) forms an end face seal with the outer edge of the step (113) and the hole edge plane (103); The plug sheath (1-1-1) is provided with a terminal hole (107) located in front of the through hole (111) and corresponding to the through hole (111); the diameter of the terminal hole (107) is larger than the diameter of the through hole (111); a terminal hole opening (101) is provided at the top of the terminal hole (107); the terminal assembly (2-1) comprises a plug-in portion (201) and a limiting portion (202) connected in sequence; the plug-in portion (201) is inserted into the terminal hole opening (101); the limiting portion (202) has a diameter larger than the diameter of the through hole (111) and is inserted into the terminal hole (107); a chamfer is provided at a position of the limiting portion (202) close to the plug-in portion (201) and / or at a top of the plug-in portion (201); The limiting portion (202) is sequentially connected to a secondary sealing portion (203) of the terminal, a terminal hanging portion (204), a primary sealing portion (205) of the terminal and a terminal crimping portion (206); the secondary sealing portion (203) of the terminal includes at least one protruding structure having a circular cross section and a symmetrical curved longitudinal section; the terminal assembly (2-1) is interference-fitted with the through hole (111) via the protruding structure; the terminal hanging portion (204) includes a front boss, a rear boss and a connecting column between the two bosses; the diameter of the front boss is larger than the diameter of the front end surface of the elastic wing (124) and smaller than the diameter of the insertion hole; the elastic wing (124) is clamped between the front boss and the rear boss; the primary sealing portion (205) of the terminal includes an outer groove; the terminal sealing ring (2-2) is arranged in the outer groove.

2. The cylinder connector according to claim 1, characterized in that: A truncated cone-shaped elastic wing (124) is provided at the end of the insertion hole, the diameter of the elastic wing (124) gradually decreases along the insertion direction of the clip (1-2-1), the elastic wing (124) comprises two symmetrically arranged elastic sheets, the cross section of the elastic sheet is a circular ring segment, and the terminal assembly (2-1) and the blocking rod assembly (3-1) both comprise a hanging portion that is hung and matched with the elastic wing (124).

3. The cylinder connector according to claim 1 or 2, characterized in that: The blocking rod assembly (3-1) comprises a blocking rod secondary sealing portion (301), a blocking rod hanging portion (302), a blocking rod primary sealing portion (303) and a rod handle (304); the blocking rod secondary sealing portion (301) comprises at least one protruding structure having a circular cross section and a symmetrical curved longitudinal section; the blocking rod assembly (3-1) is interference-fitted with the through hole (111) via the protruding structure; the blocking rod hanging portion (302) comprises a front boss, a rear boss and a connecting column between the two bosses; the diameter of the front boss is greater than the diameter of the front end surface of the elastic wing (124) and smaller than the diameter of the insertion hole; the elastic wing (124) is clamped between the front boss and the rear boss; the blocking rod primary sealing portion (303) comprises an outer groove, and the blocking rod sealing ring (3-2) is arranged in the outer groove.

4. The cylinder connector according to claim 3, characterized in that: In the terminal assembly (2-1) and the plugging rod assembly (3-1), the diameter of the front boss is smaller than the diameter of the rear boss, and the front end surface of the front boss is provided with a chamfer.

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