Knife switch type split plugging male pin and processing method thereof

Abstract

The invention discloses a knife switch type split plug-in male pin and a processing method thereof, the knife switch type split plug-in male pin comprises a male pin body, the end part of the male pin body is provided with a plurality of profiling end sheets, the profiling end sheets have an opening state and a profiling state, the male pin body is internally provided with a movable cavity, the movable cavity is internally and slidably connected with a jacking unit, and the jacking unit is connected with the male pin body. The profiling end pieces in the profiling state are formed by bending the profiling end pieces in the opening state, the profiling end pieces form contact slopes abutting against the jacking unit in the profiling state, and profiling gaps exist between the profiling end pieces in the opening state. The connection tightness between the male pin and the female pin can be improved, the pull-out force of the male pin in a connection state is improved, and the connection reliability and the use safety are ensured.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a switch-type split plug male pin and its processing method. Background Technology

[0002] For example, publication number "CN116794368A" discloses "a switch-type split copper needle device for an electricity meter," comprising: a base; a split copper needle assembly for connecting to an electricity meter; the split copper needle assembly includes a wiring assembly disposed on the base and a switch-type copper needle movably connected to the wiring assembly; wherein, the wiring assembly includes a conductive spring, and the switch-type copper needle includes a cross-sectional area adjustment assembly; when the switch-type copper needle swings, the conductive spring can abut against the cross-sectional area adjustment assembly to adjust the cross-sectional area of ​​the switch-type copper needle. However, in practical applications, due to drilling limitations, the area where this type of copper needle abuts against the actuating unit can only form a relatively large included angle, making it impossible to achieve the optimal tangent angle with the actuating unit. This results in a low decomposition of force transmission, and coupled with the large tolerance of the female needle, leads to poor connection tightness and large fluctuations in fit between the male and female needles. Summary of the Invention

[0003] In view of the problem mentioned in the background art that the connection between the male and female pins is not tight, the present invention provides a gate-type split plug-in male pin, which can improve the connection tightness between the male and female pins, increase the pull-out force of the male pin in the connected state, and ensure connection reliability and safety of use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A guillotine-type split-type male connector includes a male connector body. The end of the male connector body is provided with a plurality of molded end pieces. The molded end pieces include an open state and a molded state. The male connector body has a movable cavity inside. An actuating unit is slidably connected in the movable cavity. The molded end pieces in the molded state are formed by bending the molded end pieces in the open state. In the molded state, the molded end pieces form a contact slope that abuts against the actuating unit. In the open state, there is a molded gap between each of the molded end pieces.

[0006] In the prior art, when the male and female needles are connected, the action of the actuating unit inside the male needle opens the separate needle body of the male needle, thereby squeezing the inner wall of the female needle and producing a stable connection effect. The male needle in the prior art has a similar movable cavity to that in this application. The actuating unit moves inside the movable cavity and forms a radial expansion effect of the separate needle body by squeezing the top inclined surface of the inner movable cavity. However, in the prior art, the male needle needs to be drilled from the bottom of the male needle body to make the movable cavity, and the top inclined surface is formed by the tilt angle of the drill bit end. In order to ensure working stability, the tilt angle of the drill bit end cannot be set too small. Generally, the included angle of the top inclined surface processed by the drill bit is 70°. This results in a low thrust transmission efficiency in converting the axial movement of the actuating unit into the radial movement of the separate needle body, which in turn lowers the upper limit of the effective force between the separate needle body and the inner wall of the female needle.

[0007] Compared to the structure formed by the integrated machining of the male needle body in the prior art, this application adopts a segmented machining method, processing the ends of the male needle body independently. This allows the ends (formed end pieces) of the male needle body to form independent tilt angles, not limited by the tip tilt angle of the drill bit. The formed end pieces include an open state and a pressed state. In the pressed state, the formed end pieces are close to each other, while in the open state, the formed end pieces are flush with the rest of the male needle body. The pressed state is formed by bending and extruding the open state, with the bending point located at the connection between the formed end piece and the male needle body. The bending process begins at the root of the pressed end piece, resulting in an inclined shape during the pressing process. In the pressing state, the contact slope of the pressed end piece corresponds to the top slope of the active cavity in the prior art. Since each pressed end piece bends from a parallel opening toward the center, the included angle between the pressed end pieces gradually increases from 0°, allowing for more flexible implementation of various small-angle top angles. This ensures that a suitable included angle can be selected to maximize the transmission efficiency of the jacking unit during operation, without being limited by the drill bit's processing technology.

[0008] Furthermore, since the forming state is formed by bending from an open state, the inner wall of the forming end piece is parallel to the inner wall of the movable cavity in the open state. Although the inner wall of the forming end piece is bent relative to the inner wall of the movable cavity in the forming state, a rounded corner can be formed at the bend. In contrast, the existing technology can only form a bend by drilling, which will result in a large stress concentration phenomenon, which is prone to stress concentration at the bend, thus affecting the service life. The structure of this application can improve the structural strength and service life, and at the same time improve the smoothness of the movement of the jacking unit inside the movable cavity.

[0009] In existing technologies, the male pin structure is also a split, expandable structure that can adaptively expand according to the machining deviation of the female pin's hole diameter, thereby ensuring a mechanical fit with the female pin. However, since the inclined surface of the male pin's top abutting unit is machined through drilling, the tilt angle is significantly limited, resulting in a low efficiency in converting the axial output force of the actuating unit into lateral clamping force. This may lead to electrical mismatch issues between the male and female pins. For example, taking a female hole (i.e., female pin) standard of 7.5mm as an example: when the female hole's negative tolerance of 7.5mm is large (less than 7.4mm), the mechanical fit between the male pin and the female hole is relatively tight; however, when the positive tolerance of 7.5mm is large (greater than 7.6mm), the male pin... The mechanical fit between the male and female holes is relatively loose. Although the male and female holes can achieve mechanical fit under both machining error conditions, the lateral clamping force is different. The top bevel angle in the prior art is relatively large, which makes the efficiency of the lateral clamping force converted by the jacking unit relatively low. Therefore, when the negative tolerance is tight, the electrical fit is maintained in a better state and the temperature rise index is good. However, when the positive tolerance is loose, the electrical fit is poor and the risk of temperature rise exceeding the standard is high. In this application, due to the setting of the pressed end piece, the contact bevel can be adjusted to a smaller included angle. Therefore, the efficiency of the axial output force of the jacking unit to be converted into lateral clamping force is greatly improved. Thus, even when the positive tolerance is large, the lateral clamping force can be guaranteed, ensuring that the electrical fit (temperature rise index) does not exceed the standard.

[0010] Furthermore, in this application, by setting the forming state of the forming end piece through bending in an open state, an inclined end area can be naturally formed during the bending process, thereby improving the guiding effect during the connection with the female pin. In contrast, the prior art requires additional processing of the end face to form a bevel or a round surface to ensure the guiding effect. The forming gap is set between each adjacent forming end piece, thereby ensuring that the forming end piece has deformation space during the compression deformation process. The forming gap allows for more flexible adjustment of the bending state of the forming end piece. The shape of the forming gap can be changed according to processing requirements, and the structural shape of the forming gap includes, but is not limited to, rectangular groove structure, V-groove structure, and U-groove structure.

[0011] Preferably, the forming end piece includes a contact outer wall surface. When the actuating unit is pushed and pressed against the inclined surface, the contact outer wall surface is in contact with the inner wall of the female needle. When the actuating unit is pressed, it will cause the forming end piece to expand, and the contact outer wall surface will be in contact with the inner wall of the female needle, thereby ensuring the connection area between the male and female needles, improving connection reliability, and ensuring the stability of current transmission.

[0012] Preferably, the forming end piece includes a shrinking outer wall surface. When the actuating unit is pushed and pressed against the inclined surface, a gap exists between the shrinking outer wall surface and the inner wall of the master needle. The shrinking outer wall surface on the forming end piece provides a guiding effect, and the gap between the shrinking outer wall surface and the inner wall of the master needle, allowing the outer wall surface to adhere to the inner wall of the master needle, ensures production costs are controlled. The shrinking outer wall surface is located on the side of the outer wall surface away from the root of the forming end piece.

[0013] Preferably, in the open state of the molded end piece, an outwardly expanding protrusion is formed on the molded end piece. In the open state, the outwardly expanding protrusion is present on the molded end piece, located in the middle position. The two sides of the outwardly expanding protrusion are inclined surfaces, so that after transitioning from the open state to the molded state, the inclined surfaces on both sides respectively form a conforming outer wall surface and a contracted outer wall surface, saving processing steps.

[0014] Preferably, the actuating unit includes a contact portion near the contact slope, and the contact portion is provided with an arc surface capable of abutting against the contact slope. Providing an arc surface near the contact portion near the contact slope ensures the stability of force transmission between the contact portion and the contact slope. The contact portion includes, but is not limited to, a ball bearing, a spherical object, or a hemispherical-cylindrical composite, as long as it can form a tangent arc surface with the contact slope.

[0015] Preferably, the actuating unit includes a pushing part disposed on the side of the contact portion away from the contact slope. The pushing part includes a bottom ball and an elastic element, with the elastic element disposed between the bottom ball and the contact portion. The pushing part pushes the contact portion against the contact slope. The bottom ball and elastic element of the pushing part better transmit the pushing force, while the elastic element ensures the adaptability of the force, preventing excessive compression by the pushing part from causing excessive deformation of the male needle body, thus improving the stability of the structure.

[0016] Preferably, the male needle body is provided with a push port, which communicates with the movable cavity. A push unit is detachably connected to the push port, and when the push unit is inside the push port, it can compress the actuating unit. Because the push port on the male needle body communicates with the movable cavity, after assembly, since the forming end piece in the male needle body faces upwards, the actuating unit will be located at the bottom of the movable cavity under gravity. Through the detachably connected push unit, the push unit can compress the actuating unit, thereby realizing the action of the actuating unit. In this application, since the external tangent angle between the contact slope and the actuating unit has been adjusted to the optimal value, most of its force component does work on the actuating unit in the 90° direction, thus greatly reducing the reaction force of the actuating unit in the axial direction. Therefore, the reverse thrust on the push unit can be greatly reduced, thereby achieving the effect of reducing the opening and closing force.

[0017] Preferably, the male needle body has a mating portion at the end away from the molded end piece. The mating portion is gate-shaped, and the pushing unit is knife-shaped. The mating portion connects with the pushing unit, and when the pushing unit is connected to the pushing port, it can push the actuating unit. To ensure the reliability and stability of the connection, it can be configured as a knife-shaped and gate-shaped part. Since the actuating unit can be placed into the movable cavity from one end of the molded end piece through the molded end piece, the step of drilling another hole in the mating portion is avoided. The mating portion only needs to ensure the connection with the pushing unit, which increases the contact area between the mating portion and the pushing unit. This optimizes the problems of insufficient contact pressure, insufficient effective contact area, and local overheating caused by current concentration effect at the interface between the mating portion and the pushing unit. It achieves uniform distribution of double-sided contact pressure and expansion of effective conductive area, significantly reduces contact resistance and heat accumulation effect, and effectively solves the problem of unstable temperature rise index.

[0018] Preferably, the male needle body has a mating portion at the end away from the forming end piece. The mating portion is in the shape of a knife gate, and the pushing unit is in the shape of a gate opening. Since no hole needs to be made on the mating portion, the shape design of the mating portion can be more flexible. The mating portion can be set as a knife gate shape, while the pushing unit can be set as a gate opening shape, thereby further increasing the effective contact area.

[0019] Preferably, in the open state, an installation opening is formed between each of the forming end pieces, and the actuating unit can pass through the installation opening. In the open state, an installation opening is formed between the forming end pieces, allowing the actuating unit to pass through. This allows the actuating unit to be placed into the movable cavity through the installation opening, eliminating the need for drilling a hole in the bottom of the male needle body to install the actuating unit, as in the prior art. In the prior art, when a pin is connected to the bottom of the male needle body, the actuating unit needs to be installed into the movable cavity first, followed by the pin installation. During pin installation, the actuating unit may detach. In this application, since the actuating unit can be installed through the installation opening, the pin installation process is more flexible. It can be done before or after installing the actuating unit. Since forming can be performed directly after installing the actuating unit, converting the forming end pieces to a forming state, the actuating unit will not detach. There is no need to limit the actuating unit using a pin, improving assembly flexibility. Furthermore, the male needle body can be kept vertically upright during installation, ensuring stability and avoiding the inverted installation step required in the prior art.

[0020] Preferably, the male needle body includes several separate needle bodies, each of which has a compression end piece at its end, and a long, thin groove is provided between each of the separate needle bodies. By providing the long, thin groove, each separate needle body can also deform and expand, avoiding stress concentration caused by expansion solely through the compression end piece, thus improving service life.

[0021] This invention also provides a processing method, comprising the following steps: S1. Process the shape of the male needle body, process the movable cavity and the forming gap on the male needle body, and form several forming end pieces on both sides of the formed forming gap on the male needle body. S2. Place the jacking unit inside the movable cavity; S3. Press and bend each of the forming end pieces toward the center of the male needle body to form a forming state.

[0022] In this application, the end of the male needle body is contracted by applying pressure and deformation to the end piece. Taking the jacking unit with a spherical surface as an example, during the sealing and pressing process, the inner wall of the end piece adaptively becomes tangent to the spherical surface of the jacking unit, thereby achieving an optimal tangent angle that cannot be achieved by a drill bit. Therefore, when the maximum force transmission decomposition of 90° cannot be achieved using traditional drill bit processes, this application can multiply the force transmission effect through structural design and sealing process. Through this processing method, the end piece can obtain a smaller top angle after sealing. For example, forming a 30° angle on the inner wall of the formed end piece can convert 86.6% of the thrust of the jacking unit into an effective vertical force (the traditional 70° angle scheme can only convert 34.2%), improving the thrust transmission efficiency by 153%. Compared with the existing tail feeding + drilling process (limited by the drill bit geometry, the minimum inner wall angle can only be 70°), this application solves the energy loss problem in the thrust transmission process to the greatest extent.

[0023] Preferably, a push port is machined at the end of the male needle body away from the forming end piece. The push port is connected to the movable cavity. When the male needle body is connected to the push unit, the push unit will squeeze the actuating unit in the movable cavity.

[0024] Preferably, in step S1, a forming gap is first machined along the axial direction of the male needle body, and then a long, thin groove is machined on the basis of the forming gap. Machining the forming gap first and then the long, thin groove can ensure the stability of the machining process and avoid abnormal phenomena such as tool avoidance and breakage caused by the high degree of freedom due to the split needle body already formed when machining the forming gap due to the reversed order.

[0025] Preferably, in step S2, each molded end piece is in an open state. The actuating unit is inserted into the movable cavity through the mounting opening formed between the molded end pieces, and the actuating unit abuts against the bottom of the movable cavity on the side away from the molded end pieces. This installation method ensures the stability of the actuating unit installation and improves assembly efficiency.

[0026] Preferably, in step S1, the movable cavity is machined starting from the end of the male needle body where the pressed end piece needs to be formed. The machining of the movable cavity from one end of the pressed end piece can be achieved through methods including, but not limited to, drilling, thereby avoiding drilling at the other end of the male needle body, ensuring the effective connection area between the mating part and the pushing unit, and simultaneously enabling the direct formation of the pressed end piece in conjunction with the machining of the pressing gap. Furthermore, the overall shape of the male needle body in step S1 can be directly formed by turning, and the outwardly expanding protrusion and the beveled surfaces on both sides of the outwardly expanding protrusion can be directly machined during the turning process, thereby improving subsequent machining efficiency.

[0027] The beneficial effects of this invention are as follows: (1) It can increase the contact pressure between the male and female needles, better adapt to the problem of large tolerance of the female needle, increase the pull-out force of the male and female needles, ensure the stability of the connection, and increase the connection area between the male and female needles. (2) It can increase the effective contact area between the docking part and the pushing unit, reduce the contact resistance and heat accumulation effect, and effectively solve the problem of unstable temperature rise index. (3) Reduced opening and closing force, optimized the user experience, and improved the smoothness of closing the circuit breaker; (4) It allows for greater flexibility in the assembly process, reduces the risk of the push unit easily detaching from the movable cavity during assembly, and improves assembly efficiency. Attached Figure Description

[0028] Figure 1 This is a first structural schematic diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the second structure of the present invention.

[0030] Figure 3 This is a cross-sectional view of the molding state in Example 2.

[0031] Figure 4 This is a cross-sectional view of the open state in Embodiment 2.

[0032] Figure 5 This is a schematic diagram of the existing technology.

[0033] Figure 6 This is a cross-sectional view of the prior art.

[0034] In the picture: 1. Male needle body, 11. Push port, 12. Connecting part, 121. Pin, 13. Separate needle body, 14. Long fine groove; 2. Formed end piece, 21. Contact bevel, 22. Fits the outer wall surface, 23. Shrinks the outer wall surface, 24. Expands outward protrusion, 25. Mounting opening, 26. Forming gap; 3 movable cavities; 4. Pushing unit, 41. Contact part, 411. Arc surface, 42. Pushing part, 421. Bottom ball, 422. Elastic element; 5 push units, 51 checkpoints. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1: like Figure 1 , 2 As shown in Figure 3, a gate-type split plug-in male pin includes a male pin body 1. The end of the male pin body 1 is provided with a plurality of pressed end pieces 2. The pressed end pieces 2 include an open state and a pressed state. The male pin body 1 is provided with a movable cavity 3. A pushing unit 4 is slidably connected in the movable cavity 3. The pressed end piece 2 in the pressed state is formed by bending the pressed end piece 2 in the open state. In the pressed state, the pressed end piece 2 forms a contact slope 21 that abuts against the pushing unit 4.

[0037] like Figure 5 , 6 As shown, in the prior art, when the male and female needles are connected, the action of the actuating unit 4 inside the male needle opens the split needle body 13 of the male needle, thereby squeezing the inner wall of the female needle and producing a stable connection effect. In the prior art, the male needle has a similar movable cavity 3 to that in this application. The actuating unit 4 moves inside the movable cavity 3 and forms a radial expansion effect of the split needle body 13 by squeezing the top inclined surface of the inner movable cavity 3. However, in the prior art, the male needle needs to be drilled from the bottom of the male needle body 1 to make the movable cavity 3, and the top inclined surface is formed by the tilt angle of the drill bit end. In order to ensure working stability, the tilt angle of the drill bit end cannot be set too small. Generally, the included angle of the top inclined surface processed by the drill bit is 70°. This results in a low thrust transmission efficiency in converting the axial movement of the actuating unit 4 into the radial movement of the split needle body 13, which will result in a lower upper limit of the effective force between the split needle body 13 and the inner wall of the female needle.

[0038] Compared to the structure formed by the integral processing of the male needle body 1 in the prior art, this application adopts a segmented processing method, processing the ends of the male needle body 1 independently. This allows the ends (formed end pieces 2) of the male needle body 1 to form independent tilt angles, not limited by the tip tilt angle of the drill bit. The formed end pieces 2 include an open state and a formed state. In the formed state, the formed end pieces 2 are close to each other, while in the open state, the formed end pieces 2 are flush with the rest of the male needle body 1. The formed state is formed by bending and extruding the open state, with the bending point located at the connection between the formed end pieces 2 and the male needle body 1. The bending begins at the root of the pressed end piece 2, resulting in an inclined shape for the pressed end piece 2 in the pressed state. In the pressed state, the contact slope 21 of the pressed end piece 2 corresponds to the top slope of the movable cavity 3 in the prior art. Since each pressed end piece 2 bends from a parallel opening toward the middle, the included angle between the pressed end pieces 2 gradually increases from 0°, which can more flexibly realize various small-angle top included angles, thereby ensuring that a suitable included angle can be selected to maximize the transmission efficiency of the jacking unit 4 during the operation process, without being limited by the processing technology of the drill bit.

[0039] Furthermore, since the forming state is formed by bending from an open state, in the open state, the inner wall of the forming end piece 2 is parallel to the inner wall of the movable cavity 3. In the forming state, although the inner wall of the forming end piece 2 is bent relative to the inner wall of the movable cavity 3, a rounded corner can be formed at the bend. In contrast, in the prior art, drilling can only form a bend, which will result in a large stress concentration phenomenon, which is prone to stress concentration at the bend, thus affecting the service life. The structure of this application can improve the structural strength and service life, and at the same time improve the smoothness of the movement of the jacking unit 4 inside the movable cavity 3.

[0040] Furthermore, in this application, by setting the forming state of the forming end piece 2 to be formed by bending in an open state, an inclined end area can be naturally formed during the bending process, thereby improving the guiding effect during the connection with the female needle. In contrast, the prior art requires additional processing of the end face to form a bevel or a round surface to ensure the guiding effect. The forming gap 26 is set between each adjacent forming end piece 2, thereby ensuring that the forming end piece 2 has deformation space during the compression deformation process. The forming gap 26 allows for more flexible adjustment of the bending state of the forming end piece. The shape of the forming gap 26 can be changed according to processing requirements. The structural shape of the forming gap includes, but is not limited to, a rectangular groove structure, a V-groove structure, and a U-groove structure.

[0041] The structure in this embodiment can be... Figure 2 The structure shown can also be Figure 1 The structures shown both transition from an open state to a pressed state through the pressing of the pressing end pieces. Figure 1 and Figure 2 The left side of the image shows the open state of the design, and the right side shows the forming state of the design.

[0042] Example 2: like Figure 1 , 3 As shown, the molding end piece 2 includes a contact outer wall surface 22. When the actuating unit 4 is pushed and pressed against the inclined surface 21, the contact outer wall surface 22 is in contact with the inner wall of the female needle. When the actuating unit 4 is pressed, it will cause the molding end piece 2 to expand, and the contact outer wall surface 22 will be in contact with the inner wall of the female needle, thereby ensuring the connection area between the male and female needles, improving the connection reliability, and ensuring the stability of current transmission.

[0043] like Figure 1 , 3 As shown, the forming end piece 2 includes a shrinking outer wall surface 23. When the actuating unit 4 is pushed and pressed against the inclined surface 21, a gap exists between the shrinking outer wall surface 23 and the inner wall of the master needle. The shrinking outer wall surface 23 on the forming end piece 2 provides a guiding effect, and the gap between the shrinking outer wall surface 23 and the inner wall of the master needle, combined with the outer wall surface 22, ensures production cost control. The shrinking outer wall surface 23 is located on the side of the outer wall surface 22 away from the root of the forming end piece 2.

[0044] like Figure 4 As shown, in the open state of the molded end piece 2, an outwardly expanding protrusion 24 is formed on the molded end piece 2. In the open state, the outwardly expanding protrusion 24 is present on the molded end piece 2. In this embodiment, the outwardly expanding protrusion 24 is located in the middle position of the molded end piece 2. The two sides of the outwardly expanding protrusion 24 are inclined surfaces, so that after changing from the open state to the molded state, the inclined surfaces on both sides can respectively form the outer wall surface 22 and the outer wall surface 23, saving processing steps.

[0045] like Figure 3 As shown, the actuating unit 4 includes a contact portion 41 near the contact slope 21, and the contact portion is provided with an arc surface 411 that can abut against the contact slope 21. By providing the arc surface 411 near the contact portion 41, the stability of force transmission between the contact portion 41 and the contact slope 21 can be ensured. The contact portion 41 includes, but is not limited to, a ball, a spherical or hemispherical-cylindrical combination, etc., which can form a tangent arc surface 411 with the contact slope 21. In this embodiment, the contact portion 41 is a ball, and the arc surface 411 is a spherical surface.

[0046] like Figure 1 , 3As shown, the actuating unit 4 includes a pushing part 42 disposed on the side of the contact portion 41 away from the contact slope 21. The pushing part 42 includes a bottom ball 421 and an elastic element 422, with the elastic element disposed between the bottom ball 421 and the contact portion 41. The pushing part 42 pushes the contact portion 41 to abut against the contact slope 21. The pushing part 42 includes the bottom ball 421 and the elastic element 422. The bottom ball 421 better transmits the pushing force, and the elastic element 422 ensures the adaptability of the force, preventing the pushing part 42 from excessively squeezing and causing the male needle body 1 to undergo excessive deformation, thereby improving the stability of the structure. In this embodiment, the elastic element 422 is a spring.

[0047] like Figure 1 , 3 As shown in Figure 4, the male needle body 1 is provided with a push port 11, which is connected to the movable cavity 3. The push port 11 is detachably connected to a push unit 5. When the push unit 5 is inside the push port, it can squeeze the actuating unit 4. Since the push port 11 on the male needle body 1 is connected to the movable cavity 3, after assembly, because the forming end piece 2 in the male needle body 1 is set upward, the actuating unit 4 will be located at the bottom of the movable cavity 3 under the action of gravity. Through the detachably connected push unit 5, the push unit 5 can squeeze the actuating unit 4, thereby realizing the action of the actuating unit 4. In this application, since the external tangent angle between the contact inclined surface 21 and the actuating unit 4 has been adjusted to the optimal value, most of its force component does work on the actuating unit 4 in the 90° direction, thereby greatly reducing the reaction force of the actuating unit 4 in the axial direction. Therefore, the reverse thrust on the push unit 5 can be greatly reduced, thereby realizing the effect of reducing the opening and closing force.

[0048] like Figure 1As shown, the male needle body 1 has a docking part 12 at the end away from the forming end piece 2. The docking part 12 is in the shape of a gate, and the pushing unit 5 is in the shape of a knife gate. The pushing port 11 is located in the docking part 12. The pushing port 11 is a groove structure. The groove width of the pushing port 11 is adapted to the thickness of the knife gate of the pushing unit 5. A pin 121 is connected to the docking part 12. A bayonet 51 is provided on the pushing unit 5. When the pushing unit 5 is connected to the docking part 12, the bayonet 51 engages with the pin 121. The docking part 12 docks with the pushing unit 5. When the pushing unit 5 is connected in the pushing port 11, it can push the actuating unit 4. In order to ensure the reliability and stability of the connection, it can be set into the shape of a knife gate and a gate. Since the actuating unit 4 can be placed into the movable cavity 3 from one end of the pressed end piece 2, the step of drilling a hole in the docking part 12 is avoided. The docking part 12 only needs to ensure the connection with the pushing unit 5. This increases the contact area between the docking part 12 and the pushing unit 5, optimizes the problem of insufficient contact pressure, insufficient effective contact area, and local overheating caused by current concentration effect at the interface between the docking part 12 and the pushing unit 5. It realizes the uniform distribution of double-sided contact pressure and the expansion of effective conductive area, significantly reduces contact resistance and heat accumulation effect, and effectively solves the problem of unstable temperature rise index.

[0049] like Figure 1 , 4 As shown, in the open state, mounting openings 25 are formed between each forming end piece 2, through which the actuating unit 4 can pass. In the open state, mounting openings 25 are formed between the forming end pieces 2, allowing the actuating unit 4 to pass through. Therefore, the actuating unit 4 can be placed into the movable cavity 3 through the mounting openings 25, unlike in the prior art where a hole needs to be drilled at the bottom of the male needle body 1 to install the actuating unit 4. Therefore, in the case of a pin connected to the bottom of the male needle body 1, the prior art requires first installing the actuating unit 4 into the movable cavity 3 before installing the pin, and during pin installation, the actuating unit 4 may detach. However, in this application, since the mounting opening 25 allows the actuating unit 4 to pass through... The installation of the top-moving unit 4 in step 5 makes the installation of the pin more flexible. It can be done before or after the installation of the top-moving unit 4. Since the pressing can be performed directly after the installation of the top-moving unit 4, the state of the pressing end piece 2 is changed to the pressing state, thus ensuring that the top-moving unit 4 will not come out. There is no need to limit the top-moving unit 4 with the pin, which improves the assembly flexibility. In addition, the male needle body 1 can be kept in a vertical position during the installation process, ensuring the stability of the position and avoiding the step of installing the top-moving unit 4 upside down in the prior art.

[0050] like Figure 1As shown, the male needle body 1 includes several separate needle bodies 13, each of which has a compression end piece 2 at its end, and a long, thin groove 14 between each separate needle body 13. By providing the long, thin groove 14, each separate needle body 13 can also deform and expand, avoiding stress concentration caused by expansion solely through the compression end piece 2, thus improving service life.

[0051] In this embodiment, the male needle structure described above can increase the contact pressure between the male and female needles, increase the pull-out force of the male and female needles, ensure the stability of the connection, and increase the connection area between the male and female needles; it can increase the effective contact area between the docking part 12 and the pushing unit 5, reduce the contact resistance and heat accumulation effect, and effectively solve the problem of unstable temperature rise index; it reduces the opening and closing force, optimizes the operation experience, and improves the smoothness of locking and closing; it can make the assembly process more flexible, reduce the risk that the pushing unit 4 may easily fall out of the moving cavity 3 during the assembly process, and improve the assembly efficiency.

[0052] Example 3: Unlike Embodiment 2, in this embodiment, the male needle body 1 has a docking portion 12 at the end away from the forming end piece 2. The docking portion 12 is in the shape of a knife gate, and the pushing unit 5 is in the shape of a gate opening. Since no hole needs to be made on the docking portion 12, the shape design of the docking portion 12 can be more flexible. The docking portion 12 can be set as a knife gate shape, while the pushing unit 5 can be set as a gate opening shape, thereby further increasing the effective contact area.

[0053] Example 4: A processing method includes the following steps: S1. The shape of the male needle body 1 is processed, and the movable cavity 3 and the forming gap are processed on the male needle body 1. Several forming end pieces 2 are formed on both sides of the formed forming gap. S2. Place the jacking unit 4 inside the movable cavity 3; S3. Press and bend each of the pressed end pieces 2 toward the center of the male needle body 1 to form a pressed state.

[0054] The specific processing method in this embodiment is as follows: First, the outer shape of the male needle body 1 is machined by turning. An outwardly expanding protrusion 24 is formed in the area of ​​the male needle body 1 where the forming end piece 2 needs to be formed, and bevels are machined on both sides of the outwardly expanding protrusion 24. Then, rivet holes are drilled in the tail area of ​​the male needle body 1, and then a tail slit is opened, wherein the tail slit can be connected to the push unit 5 in the shape of a guillotine. A hole is drilled in the head of the male needle body 1, and a forming gap is opened at the position corresponding to the forming end piece 2. Then, a long and thin groove 14 is opened in the male needle body 1. Then, electroplating is performed. After the electroplating is completed, the push unit 4 is installed into the movable cavity 3 to compress and deform the forming end piece 2, changing it from an open state to a forming state. The push unit 4 cannot be dislodged from the gap between the forming end pieces 2, and the relative angle between the forming end piece 2 and the push unit 4 is appropriate, thus completing the assembly.

[0055] In this application, the end of the male needle body 1 is contracted by applying pressure to the end piece 2. Taking the jacking unit 4 as an example, when sealing and pressing, the inner wall of the end piece 2 is adaptively tangent to the spherical surface of the jacking unit 4, thereby achieving the optimal tangency angle that a drill bit cannot achieve. Therefore, when the process of using a traditional drill bit cannot achieve the maximum force transmission decomposition of 90°, this application can multiply the force transmission effect through structural design and sealing process. Through this processing method, the end piece 2 can obtain a smaller top angle after sealing. For example, forming a 30° angle on the inner wall of the formed end piece 2 can convert 86.6% of the thrust of the jacking unit 4 into an effective vertical force (the traditional 70° angle scheme can only convert 34.2%), improving the thrust transmission efficiency by 153%. Compared to the existing tail-feeding + drilling process (which is limited by the drill bit geometry and can only achieve a minimum inner wall angle of 70°), this application solves the problem of energy loss in the thrust transmission process to the greatest extent.

[0056] A push port 11 is machined at the end of the male needle body 1 away from the forming end piece 2. The push port 11 is connected to the movable cavity 3. When the male needle body 1 is connected to the push unit 5, the push unit 5 will squeeze the push unit 4 in the movable cavity 3.

[0057] In step S1, a forming gap is first machined along the axial direction of the male needle body 1, and then a long, thin groove 14 is machined on the basis of the forming gap. Machining the forming gap first and then machining the long, thin groove 14 can ensure the stability of the machining process and avoid abnormal phenomena such as tool avoidance and breakage caused by the reversed order, which would result in a high degree of freedom due to the already generated split needle body 13 when machining the forming gap.

[0058] In step S2, each molded end piece 2 is in an open state. The actuating unit 4 is inserted into the movable cavity 3 through the mounting opening 25 formed between the molded end pieces 2. The actuating unit 4 abuts against the bottom of the movable cavity 3 on the side away from the molded end pieces 2. This installation method ensures the stability of the actuating unit 4 installation and improves assembly efficiency.

[0059] In step S1, the movable cavity 3 is machined starting from the end of the male needle body 1 where the pressed end piece 2 needs to be formed. The machining of the movable cavity 3 starting from the end of the pressed end piece 2 includes, but is not limited to, drilling, thereby avoiding drilling at the other end of the male needle body 1, ensuring the effective connection area between the mating part 12 and the pushing unit 5, and simultaneously forming the pressed end piece 2 directly by processing the pressing gap; wherein the overall shape of the male needle body 1 in step S1 can be directly formed by turning, and the outwardly expanding protrusion 24 and the bevels on both sides of the outwardly expanding protrusion 24 can be directly machined during the turning of the male needle body 1, thereby improving the subsequent processing efficiency.

[0060] Through the above processing method, the gate-type split-type male connector produced in this embodiment includes a male connector body 1. The end of the male connector body 1 is provided with several pressed end pieces 2. The pressed end pieces 2 include an open state and a pressed state. A movable cavity 3 is provided inside the male connector body 1. A pushing unit 4 is slidably connected within the movable cavity 3. The pressed end piece 2 in the pressed state is formed by bending the pressed end piece 2 in the open state. In the pressed state, the pressed end piece 2 forms a contact slope 21 that abuts against the pushing unit 4. The pressed end piece 2 includes a conforming outer wall surface 22. When the pushing unit 4 is pushed and squeezed against the contact slope 21, the conforming outer wall surface 22 conforms to the inner wall of the female connector. The pressed end piece 2 includes a contracting outer wall surface 23. When the pushing unit 4 is pushed and squeezed against the contact slope 21, a gap exists between the contracting outer wall surface 23 and the inner wall of the female connector. In the open state of the pressed end piece, an outwardly expanding protrusion 24 is formed on the pressed end piece 2. The actuating unit 4 includes a contact portion 41 near the contact slope 21, and an arc surface 411 on the contact portion that can abut against the contact slope 21. The actuating unit 4 includes a pushing portion 42 on the side of the contact portion 41 away from the contact slope 21. The pushing portion 42 includes a bottom ball 421 and an elastic element 422, with the elastic element disposed between the bottom ball 421 and the contact portion 41. The male needle body 1 is provided with a pushing port 11, which communicates with the movable cavity 3. The pushing port 11 is detachably connected to a pushing unit 5, which can compress the actuating unit 4 when it is inside the pushing port. The male needle body 1 is provided with a docking portion 12 at the end away from the forming end piece 2. The docking portion 12 is in the shape of a gate, and the pushing unit 5 is in the shape of a knife gate. In the open state, an installation opening 25 is formed between each forming end piece 2, through which the actuating unit 4 can pass. The male needle body 1 includes several separate needle bodies 13, each of which has a pressed end piece 2 at its end, and a long, thin groove between each of the separate needle bodies 13.

Claims

1. A gate-type split-type male connector, characterized in that, The device includes a male needle body, the ends of which are provided with a plurality of forming end pieces. The forming end pieces include an open state and a forming state. The male needle body has a movable cavity inside, and an actuating unit is slidably connected in the movable cavity. The forming end piece in the forming state is formed by bending the forming end piece in the open state. In the forming state, the forming end piece forms a contact slope that abuts against the actuating unit. In the open state, there is a forming gap between each of the forming end pieces.

2. The gate-type split-type male connector according to claim 1, characterized in that, The forming end piece includes an outer wall surface that fits together. When the actuating unit is pushed and pressed against the inclined surface, the outer wall surface fits together with the inner wall of the mother needle.

3. A gate-type split-type male connector according to claim 1, characterized in that, The forming end piece includes a shrinking outer wall surface. When the actuating unit is pushed and squeezed to contact the inclined surface, there is a gap between the shrinking outer wall surface and the inner wall of the mother needle.

4. A gate-type split-type male connector according to claim 1, characterized in that, When the molded end piece is in the open state, an outwardly expanding protrusion is formed on the molded end piece.

5. A gate-type split-type male connector according to claim 1, characterized in that, The male needle body is provided with a push port, which is connected to the movable cavity. The push port is detachably connected to a push unit, which can squeeze and push the push unit when it is inside the push port.

6. A gate-type split-type male connector according to claim 5, characterized in that, The male needle body has a docking part at the end away from the forming end piece. The docking part is in the shape of a knife gate, and the pushing unit is in the shape of a gate opening.

7. A gate-type split-type male connector according to claim 1, characterized in that, In the open state, an installation opening is formed between each of the forming end pieces, and the actuating unit can pass through the installation opening.

8. A processing method, applied to a gate-type split-type male connector as described in any one of claims 1-7, characterized in that, It includes the following steps: S1. Process the shape of the male needle body, process the movable cavity and the forming gap on the male needle body, and form several forming end pieces on both sides of the formed forming gap on the male needle body. S2. Place the jacking unit inside the movable cavity; S3. Press and bend each of the forming end pieces toward the center of the male needle body to form a forming state.

9. The processing method according to claim 8, characterized in that, In step S2, each molded end piece is in an open state. The jacking unit is inserted into the movable cavity through the mounting opening formed between each molded end piece. The jacking unit abuts against the bottom of the movable cavity on the side away from the molded end piece.

10. A processing method according to claim 8, characterized in that, In step S1, the movable cavity is machined starting from the end of the male needle body where the pressed end piece needs to be formed.

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