Pressure relief connector

Abstract

The application discloses a pressure-proof connector and belongs to the technical field of connectors. The pressure-proof connector comprises a hole seat, a needle seat, a lock piece, a fixing mechanism, an elastic arm, a lock buckle matching part, copper needles and a terminal. The needle seat is provided with the copper needles at one end. The hole seat is arranged at the other end of the needle seat and is connected with the needle seat through the fixing mechanism. The terminal is arranged in the hole seat and abuts against the inner wall of the hole seat at one end. The lock piece is arranged in the hole seat and abuts against the other end of the terminal. The terminal is fixed in the hole seat through the lock piece. The fixing mechanism comprises the elastic arm and the lock buckle matching part. The elastic arm is arranged in the inner cavity of the hole seat or the needle seat. The lock buckle matching part is arranged on the hole seat or the needle seat without the elastic arm. The problem that the elastic arm is exposed and damaged to cause the lock buckle to fail is solved. The elastic arm is protected by adopting a full-cavity design or introducing a slidable lock piece. The design significantly improves the reliability, service life and use convenience of the connector.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to a pressure-resistant connector. Background Technology

[0002] In widely used internal locking connectors, the core of the locking mechanism (elastic arm) is typically designed and placed directly at the end of the socket body. This layout leaves the elastic arm structure completely exposed to the external environment, lacking physical barriers or protection. In compact, multi-device, or dynamically changing application scenarios, such as inside server racks, mobile device interfaces, and industrial production lines, this exposed state makes the elastic arm highly susceptible to accidental stress points.

[0003] When the flexible arm is subjected to lateral compression or direct impact from adjacent cables, other equipment components, or operating tools without protection, its precision-designed structure is prone to irreversible plastic deformation or displacement. This physical damage directly leads to the failure of the locking mechanism between the flexible arm and the needle seat, causing the locking force to decrease instantly or be completely lost. The direct consequence is the unexpected loosening of the connection between the hole seat and the needle seat, forcing the interruption of signal transmission or power supply, resulting in equipment malfunction, system downtime, and even potential safety hazards.

[0004] Therefore, how to provide a connector that ensures a stable connection between its elastic arm and the locking structure, preventing the connection between the socket and the pin socket from becoming loose and thus causing signal transmission interruption, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the present invention provides a pressure-resistant connector to solve the problem in the prior art where, due to the elastic arm being in an unprotected state, the structure undergoes irreversible deformation after an accidental collision, resulting in the failure of the locking structure between the elastic arm and the pin seat.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention discloses a pressure-resistant connector, comprising:

[0008] The needle holder has several copper needles inserted at one end;

[0009] A hole seat is inserted at the other end of the needle seat, and the hole seat and the needle seat are connected by a fixing mechanism;

[0010] A terminal is inserted into the socket, with one end of the terminal abutting against the inner wall of the socket;

[0011] A locking piece is inserted into the hole seat and abuts against the other end of the terminal, and the terminal is fixed in the hole seat by the locking piece;

[0012] The fixing mechanism includes an elastic arm and a locking engagement part. The elastic arm is disposed in the cavity of the hole seat or the needle seat, and the locking engagement part is disposed on the hole seat or the needle seat where the elastic arm is not installed.

[0013] In one possible implementation, the fixing mechanism includes at least a first use state, and in the first use state, the needle holder is a fully enclosed structure with a needle holder cavity;

[0014] The elastic arm is integrally formed in the inner cavity of the needle seat;

[0015] The locking mating part is integrally formed on the outer wall of the hole seat;

[0016] When the hole seat is inserted into the needle seat, the locking engagement part enters the inner cavity of the needle seat and engages with the elastic arm to form a lock. The full-enclosure structure of the needle seat forms a needle seat covering wall, which surrounds the outside of the elastic arm.

[0017] In one possible implementation, the free end of the elastic arm extends toward the insertion port of the needle seat, and the free end of the elastic arm is a hook-shaped block.

[0018] In one possible implementation, the locking engagement part is an arched limiting frame, which engages with the hook-shaped block locking mechanism.

[0019] The needle hub covering wall includes a wall that covers the top and sides of the needle hub of the elastic arm.

[0020] In one possible implementation, the fixing mechanism further includes a second use state, and in the second use state, the hole seat is a fully enclosed structure with a hole seat cavity, and a slot is provided on one outer wall of the hole seat cavity in the insertion direction.

[0021] The elastic arm is integrally formed in the inner cavity of the hole seat;

[0022] The locking engagement part is integrally formed on the inner wall of the needle seat;

[0023] When the hole seat is inserted into the needle seat, the locking engagement part passes through the slot into the inner cavity of the hole seat and engages with the elastic arm to form a lock. The full-enclosure structure of the hole seat forms a hole seat covering wall, which surrounds the outside of the elastic arm.

[0024] In one possible implementation, the locking engagement part is a needle seat rib, which includes an extension plate and a limiting groove. One end of the extension plate is integrally formed on the inner wall of the needle seat, and the other end of the extension plate is provided with the limiting groove.

[0025] In one possible implementation, the free end of the elastic arm is provided with a first limiting block, which cooperates with the limiting groove to form a latch.

[0026] The hole seat covering wall includes a wall that covers the top and sides of the hole seat of the elastic arm.

[0027] In one possible implementation, the hole seat is provided with protrusions, which are arranged in pairs and integrally formed on the outer walls of both sides of the hole seat.

[0028] The locking plate includes a locking plate body and a limiting member. The locking plate body is inserted into the hole seat. Pairs of the limiting members are integrally formed on the outer walls of both sides of the locking plate body. The limiting members and the protrusions are engaged and connected.

[0029] In one possible implementation, the fixing mechanism further includes a third use state, and in the third use state, the locking engagement part is a limiting hole opened on the outer wall of the needle seat, and a protruding rib is provided below the limiting hole, with both ends of the protruding rib integrally formed on the inner wall of the needle seat.

[0030] The elastic arm is mounted on the outer wall of the hole seat, and a gap is provided between the free end of the elastic arm and the outer wall of the hole seat;

[0031] A pair of sliding grooves are provided on both sides of the gap, and the sliding grooves are formed on the hole seat;

[0032] The outer wall of the elastic arm is provided with a groove, and the elastic arm is also integrally formed with a second limiting block.

[0033] In one possible implementation, the locking piece further includes:

[0034] A connecting arm is installed at one end on the top of the locking plate body and at the other end on an anti-pressure arm. The anti-pressure arm is slidably connected in the slide groove and abuts against the underside of the elastic arm.

[0035] The baffle is integrally formed on the outer wall of the anti-pressure arm at the front end.

[0036] The present invention has the following advantages: by adopting different structural designs, regardless of whether the elastic arm is set at the pin seat end or the hole seat end, the core locking element elastic arm is completely protected and a physical barrier is formed by the rigid covering wall, thereby avoiding direct squeezing or impact of external objects on the elastic arm. This fundamentally eliminates the risk of lock loosening and connector failure caused by the collapse of the elastic arm under force, and significantly improves the mechanical stability, lock reliability and overall service life of the connector in complex operating environments (such as industrial or automotive scenarios with mechanical stress, vibration and accidental collisions). Attached Figure Description

[0037] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0038] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0039] Figure 1 A perspective view of the normal insertion of the pressure-resistant connector provided in Embodiment 3 of the present invention;

[0040] Figure 2 This is a perspective view of the normal insertion of the fully enclosed pin socket and hole socket provided in Embodiment 1 of the present invention;

[0041] Figure 3 This is a three-dimensional view of the fully enclosed needle seat and hole seat provided in Embodiment 1 of the present invention;

[0042] Figure 4 This is a cross-sectional view of the fully enclosed pin seat and hole seat in normal insertion according to Embodiment 1 of the present invention;

[0043] Figure 5 A perspective view of the normal insertion of the pin seat and the full-coverage hole seat provided in Embodiment 2 of the present invention;

[0044] Figure 6 This is a split perspective view of the needle holder and the fully enclosed hole holder provided in Embodiment 2 of the present invention;

[0045] Figure 7 This is a perspective view of the fully enclosed hole seat provided in Embodiment 2 of the present invention;

[0046] Figure 8 This is a cross-sectional view of the normal insertion of the pin seat and the full-coverage hole seat provided in Embodiment 2 of the present invention;

[0047] Figure 9 This is a cross-sectional view of the locking engagement between the elastic arm and the locking part provided in Embodiment 2 of the present invention;

[0048] Figure 10 This is a perspective view of the normal insertion of the pin seat, the full-coverage hole seat, and the locking piece provided in Embodiment 3 of the present invention;

[0049] Figure 11 This is a three-dimensional view of the pin holder, the fully enclosed hole holder, and the locking piece provided in Embodiment 3 of the present invention;

[0050] Figure 12 This is a perspective view of the locking plate provided in Embodiment 3 of the present invention;

[0051] Figure 13 A perspective view of the elastic arm and gap provided in Embodiment 3 of the present invention;

[0052] Figure 14 This is a cross-sectional view of the pin holder, the full-coverage hole holder, and the locking piece being normally inserted according to Embodiment 3 of the present invention.

[0053] Figure 15 This is a perspective view of the pin holder, the fully enclosed hole holder, and the locking piece being normally inserted according to Embodiment 3 of the present invention;

[0054] Figure 16 Provided for Embodiment 3 of the present invention Figure 15 Enlarged view of a portion of point A in the middle;

[0055] In the diagram: 1. Hole seat; 11. Hole seat inner cavity; 12. Slot; 13. Hole seat covering wall; 14. Slide groove; 15. Protrusion; 16. Gap; 2. Pin seat; 21. Pin seat inner cavity; 22. Pin seat covering wall; 23. Rib; 3. Locking plate; 31. Locking plate body; 32. Connecting arm; 33. Anti-pressure arm; 34. Limiting component; 35. Baffle; 4. Fixing mechanism; 41. Elastic arm; 411. Hook-shaped block; 412. First limiting block; 413. Groove; 414. Second limiting block; 42. Locking engagement part; 421. Limiting frame; 422. Pin seat rib; 4221. Extension plate; 4222. Limiting groove; 424. Limiting hole; 5. Copper pin; 6. Terminal. Detailed Implementation

[0056] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Please refer to Figures 1-16 The present invention will now describe a pressure-resistant connector, as follows: Figure 1It includes a hole seat 1, a needle seat 2, a locking plate 3, a fixing mechanism 4, an elastic arm 41, a locking engagement part 42, copper needles 5, and a terminal 6. A plurality of copper needles 5 are inserted into one end of the needle seat 2. The hole seat 1 is inserted into the other end of the needle seat 2, and the hole seat 1 and the needle seat 2 are connected by the fixing mechanism 4. The terminal 6 is inserted into the hole seat 1, and one end of the terminal 6 abuts against the inner wall of the hole seat 1. The locking plate 3 is inserted into the hole seat 1 and abuts against the other end of the terminal 6. The terminal 6 is fixed in the hole seat 1 by the locking plate 3. The fixing mechanism 4 includes an elastic arm 41 and a locking engagement part 42. The elastic arm 41 is disposed in the inner cavity of the hole seat 1 or the needle seat 2, and the locking engagement part 42 is disposed on the hole seat 1 or the needle seat 2 on which the elastic arm 41 is not installed.

[0058] In use, this invention provides three protection solutions to address the problem in existing technologies where the elastic arm is susceptible to external pressure, leading to latch failure:

[0059] Example 1

[0060] In this embodiment, such as Figures 2-4 The needle holder 2 is a fully enclosed structure with a needle holder cavity 21. The elastic arm 41 is integrally formed within the needle holder cavity 21, and the locking engagement part 42 is integrally formed on the outer wall of the hole seat 1. When the hole seat 1 is inserted into the needle holder 2, the locking engagement part 42 enters the needle holder cavity 21 and engages with the elastic arm 41 to form a lock. The fully enclosed structure of the needle holder 2 has a needle holder covering wall 22, which surrounds the outer side of the elastic arm 41. The needle holder 2 is designed as a fully enclosed structure, with a needle holder cavity 21 formed inside. The elastic arm 41 is integrally formed within this cavity, and the hook-shaped block 411 at its free end faces the insertion port. The needle holder covering wall 22, as an extension of the wall of the needle holder 2, completely surrounds the elastic arm 41 from the top and sides, forming a rigid protective cover to isolate external pressure. The hole seat 1 serves as the insertion end, and its outer wall is provided with a locking engagement part 42. When the socket 1 is inserted into the needle holder 2, the limiting frame 421 enters the inner cavity 21 of the needle holder, pushing the hook block 411 of the elastic arm 41 to elastically deform until it is fully inserted and then the hook block 411 springs back and locks into the limiting frame 421 to form a lock. The needle holder covering wall 22 always seals and wraps the elastic arm 41, completely preventing it from collapsing or failing due to external impact or pressure.

[0061] In this embodiment, such as Figure 4The free end of the elastic arm 41 extends toward the insertion port of the needle seat 2, and the free end of the elastic arm 41 is a hook-shaped block 411. This design ensures that when the seat 1 is inserted, its locking engagement part 42 can smoothly contact the guide slope of the hook-shaped block 411, pushing the elastic arm 41 to elastically bend and deform in a controllable manner. When the seat 1 is inserted into place, the elastic arm 41 returns to its original position due to the material's rebound force, causing the hook-shaped block 411 to snap into the limiting frame 421 to form a lock. This extension direction not only achieves low-resistance insertion and reliable self-locking, but also eliminates the risk of deformation failure caused by external object impact from the structural root. The hook-shaped block 411, as the locking structure of the free end of the elastic arm 41, achieves smooth contact and low-resistance elastic deformation of the limiting frame 421 inside the needle seat 2 when the seat 1 is inserted through its inclined guide surface, and forms a mechanical interlock by snapping into the arched space of the limiting frame 421 after insertion due to its hook-shaped contour.

[0062] In this embodiment, such as Figure 4 The locking engagement part 42 is an arched limiting frame 421, which engages with the hook block 411. The needle seat covering wall 22 includes a wall covering the top and sides of the elastic arm 41 of the needle seat 2. The limiting frame 421 serves as the locking engagement part 42 of the outer wall of the hole seat 1. When the hole seat 1 is inserted into the needle seat 2, the guide surface of the inner wall of the limiting frame 421 contacts the inclined surface of the hook block 411, guiding the elastic arm 41 to deform controllably. After insertion, the hook block 411 springs back and engages with the limiting frame 421, achieving mechanical locking through angle engagement. The needle seat covering wall 22 includes a wall covering the top and sides of the elastic arm 41 of the needle seat 2. The needle holder enclosure wall 22, as a protective structure, extends from the wall of the needle holder 2. Its design strictly covers the top and both sides of the elastic arm 41, forming a U-shaped rigid protective shield: the top wall isolates vertical compression, and the side walls block lateral impacts, placing the elastic arm 41 in a fully enclosed pressure-resistant environment. This structure ensures that external objects cannot easily and directly contact the vulnerable parts of the elastic arm 41, completely blocking the path of elastic arm collapse and failure due to external forces in physical space.

[0063] Example 2

[0064] In this embodiment, such as Figures 5-9The fixing mechanism 4 also includes a second usage state. In the second usage state, the hole seat 1 is a fully enclosed structure with a hole seat cavity 11. A slot 12 is provided on one outer wall of the hole seat cavity 11 in the insertion direction. The elastic arm 41 is integrally formed in the hole seat cavity 11, and the locking engagement part 42 is integrally formed on the inner wall of the needle seat 2. When the hole seat 1 is inserted into the needle seat 2, the locking engagement part 42 passes through the slot 12 and enters the hole seat cavity 11, and cooperates with the elastic arm 41 to form a lock. The fully enclosed structure of the hole seat 1 forms a hole seat covering wall 13, which surrounds the outside of the elastic arm 41. The hole seat 1 is designed as a fully enclosed structure, with a hole seat cavity 11 formed inside. The elastic arm 41 is integrally formed in this cavity. The hole seat covering wall 13 extends as the wall of the hole seat 1, strictly covering the top and two sides of the elastic arm 41, forming a closed protective chamber to isolate external pressure. The slot 12 is provided on the side wall of the hole seat 1 as a channel for the locking engagement part 42 inside the needle seat 2. During insertion, the pin seat rib 422 of the pin seat 2 passes through the slot 12 and enters the inner cavity 11 of the connector, pushing the first limiting block 412 of the elastic arm 41 to deform controllably until it is fully inserted. The first limiting block 412 then springs back and locks into the limiting groove 4222 of the rib to form a lock. During this process, the connector cover wall 13 always wraps around the elastic arm 41, and the slot 12 only allows the pin seat rib 422 to pass through in a specific direction. External objects cannot contact the elastic arm 41, protecting the elastic arm 41 from damage, thus making the connector more stable.

[0065] In this embodiment, such as Figures 8-9 The locking engagement part 42 is a needle seat protrusion 422, which includes an extension plate 4221 and a limiting groove 4222. One end of the extension plate 4221 is integrally formed on the inner wall of the needle seat 2, and the other end of the extension plate 4221 has a limiting groove 4222. As a locking engagement part 42 provided in the needle seat 2, the needle seat protrusion 422 extends from the inner wall of the needle seat through the extension plate 4221 to form a rigid guide channel, accurately passing through the slot 12 of the hole seat 1 and entering the inner cavity 11 of the hole seat to contact the elastic arm 41. When inserted into place, the limiting groove 4222 at its end forms a locking interlock with the first limiting block 412 of the elastic arm 41 to achieve mechanical fixation.

[0066] In this embodiment, such as Figures 6-9The free end of the elastic arm 41 is provided with a first limiting block 412. The first limiting block 412 cooperates with the limiting groove 4222 to form a lock. The hole seat covering wall 13 includes the wall of the hole seat 1 covering the top and sides of the elastic arm 41. The first limiting block 412 serves as the locking unit of the free end of the elastic arm 41. Its inclined locking surface forms a contact interlock with the limiting groove 4222 of the needle seat protrusion 422 to ensure mechanical stability. At the same time, the elastic arm 41 is embedded in the inner cavity 11 of the hole seat and is tightly covered from the top and sides by the hole seat covering wall 13. The interface with the needle seat protrusion 422 is only exposed through the slot 12. While ensuring a high-strength locking function, it reduces the direct squeezing or impact of external objects on the limiting area and prevents the risk of elastic arm failure. The hole seat covering wall 13 serves as the full-coverage protective structure of the hole seat 1. Its wall extends and strictly covers the top and two sides of the elastic arm 41, forming a rigid isolation shield. The top wall resists vertical compression, and the two side walls block lateral impact. At the same time, together with the bottom plate of the hole seat cavity 11, it forms a closed safety chamber, so that the elastic arm 41 is completely embedded in the system of the hole seat 1. It is locked only by the linkage between the directional slot 12 and the pin seat rib 422, ensuring that external objects cannot directly contact the easily deformable area of ​​the elastic arm 41, thus physically reducing the risk of lock failure due to external force.

[0067] Example 3

[0068] In this embodiment, such as Figures 14-15 The mounting base 1 is provided with protrusions 15, which are arranged in pairs and integrally formed on the outer walls of both sides of the mounting base 1. The locking piece 3 includes a locking piece body 31 and a limiting member 34. The locking piece body 31 is inserted into the mounting base 1. Pairs of limiting members 34 are integrally formed on the outer walls of both sides of the locking piece body 31. The limiting members 34 and the protrusions 15 are engaged and connected. The protrusions 15 and the limiting members 34 on the locking piece 3 form an engaging connection, which firmly fixes the initial installation position of the locking piece 3 on the mounting base 1, provides stable support for the elastic arm 41, and locks the position of the locking piece 3 to ensure accurate positioning of the anti-pressure arm.

[0069] In this embodiment, such as Figures 13-14The fixing mechanism 4 also includes a third use state. In the third use state, the locking engagement part 42 is a limiting hole 424 opened on the outer wall of the needle seat 2. A rib 23 is provided below the limiting hole 424. The two ends of the rib 23 are integrally formed on the inner wall of the needle seat 2. The elastic arm 41 is installed on the outer wall of the hole seat 1. A gap 16 is provided between the free end of the elastic arm 41 and the outer wall of the hole seat 1. A pair of sliding grooves 14 are provided on both sides of the gap 16. The sliding grooves 14 are opened on the hole seat 1. A groove 413 is opened on the outer wall of the elastic arm 41. The elastic arm 41 is also integrally formed with a second limiting block 414. The sliding groove 14 provides a sliding track for the anti-pressure arm 33 of the locking plate 3, ensuring that it can slide stably in a predetermined direction when it is pushed by the rib 23 of the needle seat 2 to the baffle 35, thereby realizing the movement from the protected position (abutting against the elastic arm 41) to the released position. When not inserted, the anti-pressure arm 33 occupies the gap 16 and abuts against the elastic arm 41, thereby protecting the elastic arm 41. When inserted, the protruding rib 23 pushes the anti-pressure arm 33 to slide out of the gap 16, thereby releasing the restriction and protection on the elastic arm 41. The guide surface of the limiting hole 424 contacts the second limiting block 414, guiding the elastic arm 41 to deform controllably. After being inserted into place, the second limiting block 414 springs back and engages with the limiting hole 424, achieving mechanical locking through angle engagement. The anti-pressure arm 33 has been removed, allowing direct pressing of the elastic arm to deform using the gap 16, thereby disengaging from the limiting hole 424 and unlocking. There is no need to disassemble the lock plate beforehand, achieving the dual functions of anti-pressure and convenient unlocking.

[0070] In this embodiment, such as Figures 10-16 The locking plate 3 also includes a connecting arm 32, an anti-pressure arm 33, a limiting member 34, and a baffle 35. One end of the connecting arm 32 is installed on the top of the locking plate body 31, and the other end is installed with the anti-pressure arm 33. The anti-pressure arm 33 is slidably connected in the slide groove 14 and rests against the elastic arm 41. The front end of the baffle 35 is integrally formed on the outer wall of the anti-pressure arm 33. The locking plate body 31 is inserted into the hole seat 1 and the terminal 6 is fixed. The connecting arm 32 connects the locking plate body 31 and the anti-pressure arm 33. The anti-pressure arm 33 is the actuator. In the initial state, it occupies the gap 16 area and abuts against the lower end of the elastic arm 41, forming a physical barrier to protect the elastic arm 41. The baffle 35 is provided on the outer wall of the anti-pressure arm 33. When inserted, it is pushed by the protruding rib 23 of the pin seat 2, driving the anti-pressure arm 33 to slide outward along the slide groove 14 and disengage from the gap. After being inserted into place, the anti-pressure arm 33 is completely removed, allowing the elastic arm 41 to be directly pressed to unlock without disassembling the locking plate, thus achieving the unity of anti-pressure protection and convenient unlocking.

[0071] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A pressure-resistant connector, characterized in that, include: The needle holder (2) has several copper needles (5) inserted at one end; A hole seat (1) is inserted at the other end of the needle seat (2), and the hole seat (1) and the needle seat (2) are connected by a fixing mechanism (4); Terminal (6) is inserted into the hole seat (1), and one end of the terminal (6) abuts against the inner wall of the hole seat (1); A locking piece (3) is inserted into the hole seat (1) and abuts against the other end of the terminal (6). The terminal (6) is fixed in the hole seat (1) by the locking piece (3). The fixing mechanism (4) includes an elastic arm (41) and a locking engagement part (42). The elastic arm (41) is disposed in the cavity of the hole seat (1) or the needle seat (2), and the locking engagement part (42) is disposed on the hole seat (1) or the needle seat (2) where the elastic arm (41) is not installed. The hole seat (1) is provided with protrusions (15), the protrusions (15) are arranged in pairs and are integrally formed on the outer walls of both sides of the hole seat (1); The locking piece (3) includes a locking piece body (31) and a limiting member (34). The locking piece body (31) is inserted into the hole seat (1). The limiting members (34) are integrally formed on both outer walls of the locking piece body (31). The limiting members (34) and the protrusion (15) are engaged. The fixing mechanism (4) also includes a third use state, and in the third use state, the locking engagement part (42) is a limiting hole (424) opened on the outer wall of the needle seat (2), and a rib (23) is provided below the limiting hole (424), and the two ends of the rib (23) are integrally formed on the inner wall of the needle seat (2); The elastic arm (41) is installed on the outer wall of the hole seat (1), and a gap (16) is provided between the free end of the elastic arm (41) and the outer wall of the hole seat (1). A pair of sliding grooves (14) are provided on both sides of the gap (16), and the sliding grooves (14) are formed on the hole seat (1); The outer wall of the elastic arm (41) is provided with a groove (413), and the elastic arm (41) is also integrally formed with a second limiting block (414).

2. The pressure-resistant connector as described in claim 1, characterized in that, The fixing mechanism (4) includes at least a first use state, and in the first use state, the needle seat (2) is a fully enclosed structure with a needle seat cavity (21); The elastic arm (41) is integrally formed in the inner cavity (21) of the needle seat; The locking part (42) is integrally formed on the outer wall of the hole seat (1); When the hole seat (1) is inserted into the needle seat (2), the locking engagement part (42) enters the inner cavity (21) of the needle seat and engages with the elastic arm (41) to form a lock. The full-enclosure structure of the needle seat (2) has a needle seat covering wall (22) which surrounds the outside of the elastic arm (41).

3. The pressure-resistant connector as described in claim 2, characterized in that, The free end of the elastic arm (41) extends toward the insertion port of the needle seat (2), and the free end of the elastic arm (41) is a hook-shaped block (411).

4. The pressure-resistant connector as described in claim 3, characterized in that, The locking engagement part (42) is an arched limiting frame (421), which engages with the hook block (411). The needle seat covering wall (22) includes a wall covering the top and sides of the needle seat (2) of the elastic arm (41).

5. The pressure-resistant connector as described in claim 1, characterized in that, The fixing mechanism (4) also includes a second use state, and in the second use state, the hole seat (1) is a fully enclosed structure with a hole seat cavity (11), and a slot (12) is provided on one side of the outer wall of the hole seat cavity (11) in the insertion direction. The elastic arm (41) is integrally formed in the inner cavity (11) of the hole seat; The locking engagement part (42) is integrally formed on the inner wall of the pin seat (2); When the hole seat (1) is inserted into the needle seat (2), the locking engagement part (42) passes through the slot (12) and enters the inner cavity (11) of the hole seat and engages with the elastic arm (41) to form a lock. The full-enclosure structure of the hole seat (1) forms a hole seat covering wall (13), which surrounds the outside of the elastic arm (41).

6. The pressure-resistant connector as described in claim 5, characterized in that, The locking engagement part (42) is a needle seat rib (422). The needle seat rib (422) includes an extension plate (4221) and a limiting groove (4222). One end of the extension plate (4221) is integrally formed on the inner wall of the needle seat (2), and the other end of the extension plate (4221) is provided with the limiting groove (4222).

7. The pressure-resistant connector as described in claim 6, characterized in that, The free end of the elastic arm (41) is provided with a first limiting block (412), and the first limiting block (412) cooperates with the limiting groove (4222) to form a lock; The hole seat covering wall (13) includes a wall covering the top and sides of the hole seat (1) of the elastic arm (41).

8. The pressure-resistant connector as described in claim 1, characterized in that, The locking plate (3) also includes: The connecting arm (32) is installed at one end on the top of the locking plate body (31) and at the other end is an anti-pressure arm (33). The anti-pressure arm (33) is slidably connected in the slide groove (14) and the anti-pressure arm (33) abuts against the elastic arm (41). The baffle (35) is integrally formed on the outer wall of the anti-pressure arm (33) at the front end.

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