A cable connection device with strong current carrying capacity

Abstract

This invention provides a cable connection device with strong current carrying capacity, relating to the field of cable connector technology. It includes a male connector and a female connector. The male connector has a locking pin, and the female connector has a locking element. The locking element includes a base plate, a guide wheel, and a transmission belt. The transmission belt includes a contact section and a tensioning section. When the locking element locks with the locking pin, the outer side of the contact section contacts the locking pin and applies a locking force to it. The base plate also has a tensioning wheel and an elastic element. When the locking force decreases, the tension of the transmission belt is smaller, and the elastic element causes the tensioning wheel to move closer to and compress the tensioning section along a first direction, thereby increasing the tension of the transmission belt and thus increasing the locking force. When the locking force increases, the tension of the transmission belt is larger, overcoming the elastic force of the elastic element and causing the tensioning wheel to move away from the tensioning section along the first direction, thereby reducing the tension of the transmission belt and thus reducing the locking force. This adaptively adjusts the magnitude of the locking force, ensuring the compression effect of the locking element on the sealing element to a certain extent and guaranteeing sealing performance.

Description

Technical Field

[0001] This invention relates to the field of cable connector technology, and in particular to a cable connection device with strong current carrying capacity. Background Technology

[0002] Cable connectors are key components in industrial equipment for achieving electrical connections, with their core function being the reliable transmission of current and signals. Heavy-duty connectors, also known as HDC heavy-duty connectors or aviation connectors, are widely used in applications with high reliability requirements due to their robust mechanical structure, high protection rating, and strong current-carrying capacity, such as rail transportation, construction machinery, robotics, and automation equipment. To adapt to different field installation needs, cable connectors have evolved into various installation methods, including perforated mounting, surface mounting, and cable mating.

[0003] Existing cable connectors generally have a mechanical locking mechanism, relying on an internal spring to provide locking force. Locking and disengagement after insertion are achieved manually to meet the needs of frequent insertion and removal. However, this locking mechanism inherently relies on rigid compression between the locking element and the locking pin. With increasing insertion and removal cycles, the contact area is prone to wear, which may cause the locking force to gradually decrease, thus affecting its compression effect on the sealing structure and posing a risk of reduced sealing performance.

[0004] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] Therefore, it is necessary to provide a cable connection device with strong current carrying capacity to address the problems existing in current cable connectors.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A cable connection device with strong current carrying capacity includes a male connector and a female connector, which can be plugged into each other and are provided with a sealing element between them. The male connector has multiple locking pins, and the female connector has multiple locking elements. The multiple locking pins correspond one-to-one with the multiple locking elements. Each locking element includes a base plate rotatably connected to the female connector and multiple guide wheels rotatably disposed on the base plate with their axes parallel to each other. All guide wheels have a common annular and flexible transmission belt on their outer sides. The transmission belt has a constant dimension in its trajectory direction and includes a contact section. When the locking element locks with the locking pins, the outer side of the contact section contacts the locking pins and applies a locking force toward the female connector to the locking pins. The transmission belt also includes a tensioning section. The base plate is also provided with a tensioning wheel and an elastic element. The tensioning wheel is slidably connected to the base plate in a first direction. The elastic element is used to make the tensioning wheel tend to approach and squeeze the tensioning section along the first direction. The first direction is set at an angle to the tensioning section before it is squeezed.

[0008] Furthermore, a sliding plate is provided on the substrate along the first direction, and an elastic element is disposed between the sliding plate and the tensioning wheel; a driving element is also provided on the substrate, which is used to make the sliding plate slide along the first direction to change the elastic force of the elastic element.

[0009] Furthermore, the base plate is provided with a movable wheel, the axis of which is parallel to the axis of the guide wheel, and the contact section is located between the movable wheel and one of the guide wheels; the base plate is rotatably connected to the female head and has a rotating shaft, the rotation range of the base plate is between a first position and a second position, the rotation from the first position to the second position is called the first rotation direction, and the rotation from the second position to the first position is called the second rotation direction; the base plate is also provided with an adjustment part, which is used to move the movable wheel along a preset trajectory, the preset trajectory is arc-shaped and the center of the circle coincides with the axis of the rotating shaft, and the preset trajectory has a third position and a fourth position arranged sequentially along the first rotation direction; when locking the locking member and the locking pin, the base plate first rotates along the first rotation direction and the movable wheel is in the third position, and when the base plate is in the second position, the adjustment part moves the movable wheel from the third position to the fourth position; when separating the locking member and the locking pin, the adjustment part first moves the movable wheel from the fourth position to the third position, and the base plate then rotates along the second rotation direction.

[0010] Furthermore, the substrate is also provided with a limiting part, which allows the movable wheel to rotate in the second direction of rotation, while limiting the movable wheel to rotate in the first direction of rotation; when the locking member and the locking pin are locked, the substrate rotates in the first direction of rotation, and the transmission belt and the locking pin move relative to each other.

[0011] Furthermore, the substrate is also provided with a cleaning component that contacts the outside of the transmission belt. When the locking component is separated from the locking post, the substrate rotates along the second rotation direction, and the transmission belt and the cleaning component move relative to each other.

[0012] Furthermore, the drive component is a bolt and is rotatably connected to the substrate, and the drive component is threadedly connected to the slide plate.

[0013] Furthermore, the first direction is perpendicular to the tensioned section before it is compressed.

[0014] Furthermore, the tensioner is located on the outside of the drive belt and squeezes the drive belt from the outside to the inside.

[0015] Furthermore, a cover is provided on the substrate, and the guide wheel and transmission belt are located inside the cover. The cover has an opening, and the contact section extends out of the cover through the opening.

[0016] Furthermore, there are four locking pins and four locking components, with the four locking components located on two opposite surfaces of the female head, and a wrench is provided between two adjacent base plates located on opposite surfaces.

[0017] The present invention has at least the following beneficial effects:

[0018] When the locking force decreases, the tension of the transmission belt is smaller, and the elastic element causes the tensioning wheel to move closer to and squeeze the tensioning section along the first direction, thereby increasing the tension of the transmission belt and thus increasing the locking force. When the locking force increases, the tension of the transmission belt is larger, overcoming the elastic force of the elastic element and causing the tensioning wheel to move away from the tensioning section along the first direction, thereby reducing the tension of the transmission belt and thus reducing the locking force. This adaptively adjusts the magnitude of the locking force, ensuring the pressing effect of the locking element on the sealing element to a certain extent and ensuring the sealing performance. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a cable connection device with strong current carrying capacity provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Diagram showing the state of the male and female connectors when they are plugged in;

[0021] Figure 3 for Figure 2 Side view;

[0022] Figure 4 for Figure 3 Sectional view along axis AA;

[0023] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0024] Figure 6 This is a schematic diagram of the base plate and the wrench.

[0025] Figure 7 This is a schematic diagram of the transmission belt structure;

[0026] Figure 8 for Figure 7 Exploded view of the parts;

[0027] Figure 9This is a schematic diagram of the tensioner wheel.

[0028] Figure 10 for Figure 8 Another view;

[0029] Figure 11 This is a schematic diagram of the movable wheel structure;

[0030] Figure 12 for Figure 11 Exploded view of the parts;

[0031] Figure 13 for Figure 2 A magnified view of a section at point C;

[0032] Figure 14 for Figure 5 A magnified view of a section at point D.

[0033] in:

[0034] 101. Male connector; 102. Female connector; 103. Locking pin; 104. Inlet terminal; 105. Terminal; 106. Wiring terminal;

[0035] 200. Locking component; 201. Base plate; 202. Guide roller; 203. Transmission belt; 204. Tensioner; 205. Elastic component; 206. Cover; 207. Slide plate; 208. Driving component; 209. Slide groove; 210. Wheel frame; 211. Wrench;

[0036] 301. Sliding wheel; 302. Rotating shaft; 303. Guide hole; 304. Sliding shaft; 305. Side bracket; 306. Knob; 307. Arc block;

[0037] 400, Restriction part; 401, Card slot; 402, Card tooth; 403, Spring piece; 404, Cleaning part. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] like Figures 1 to 14 As shown, this embodiment of the invention provides a cable connection device with strong current carrying capacity, including a male connector 101 and a female connector 102. The male connector 101 and the female connector 102 can be plugged into each other and a sealing element is provided between them. The male connector 101 is provided with a plurality of locking pins 103, and the female connector 102 is provided with a plurality of locking elements 200. The plurality of locking pins 103 correspond one-to-one with the plurality of locking elements 200. The locking element 200 includes a base plate 201 rotatably connected to the female connector 102 and a component rotatably disposed on the base plate 201 and having an axial... Multiple guide rollers 202 are parallel to each other. A flexible, annular transmission belt 203 is provided on the outer side of all guide rollers 202. The transmission belt 203 has a constant dimension along its trajectory. The transmission belt 203 includes a contact section. When the locking member 200 is locked with the locking pin 103, the outer side of the contact section contacts the locking pin 103 and applies a locking force towards the female head 102. The transmission belt 203 also includes a tensioning section. A tensioning roller 204 and an elastic member 205 are also provided on the base plate 201. (See [reference needed]). Figure 5 The tensioning wheel 204 is slidably connected to the base plate 201 in a first direction, and the elastic member 205 is used to make the tensioning wheel 204 tend to approach and squeeze the tensioning section along the first direction, which is set at an angle to the tensioning section before being squeezed.

[0042] When the locking force decreases, the tension of the transmission belt 203 is relatively small. The elastic element 205 causes the tensioning wheel 204 to move closer to and squeeze the tensioning section along the first direction, thereby increasing the tension of the transmission belt 203 and thus increasing the locking force. When the locking force increases, the tension of the transmission belt 203 is relatively large, overcoming the elastic force of the elastic element 205 and causing the tensioning wheel 204 to move away from the tensioning section along the first direction, thereby reducing the tension of the transmission belt 203 and thus reducing the locking force. This adaptively adjusts the magnitude of the locking force, ensuring the pressing effect of the locking element 200 on the sealing element to a certain extent and ensuring the sealing performance.

[0043] Understandably, when the locking member 200 is locked with the locking pin 103, the contact section of the transmission belt 203 contacts the locking pin 103 and deforms. The dimension of the transmission belt 203 is constant in its trajectory direction. At this time, the transmission belt 203 applies a locking force to the locking pin 103 toward the female head 102. This locking force makes the male head 101 and the female head 102 fit tightly together and produces a pressing effect on the seal between them, thereby ensuring the sealing performance.

[0044] Among them, see Figure 1 The male connector 101 has an inlet terminal 104 and multiple terminals 105, while the female connector 102 has a terminal 106 and a socket. The inlet terminal 104 and the terminal 106 are respectively connected to two cables. When the male connector 101 and the female connector 102 are plugged into each other, the terminals 105 are inserted into the sockets to achieve electrical connection between the two cables. The male connector 101 and the female connector 102 can be made of high-strength engineering plastics or metal alloys and are equipped with protective elements such as seals and electromagnetic shielding layers to improve mechanical stability and environmental resistance. The specific structure and working principle of the male connector 101 and the female connector 102 described above are existing technologies and will not be elaborated here.

[0045] Additionally, four locking pins 103 and four locking members 200 can be provided. The four locking members 200 are respectively located on two opposite surfaces of the female head 102. A wrench 211 is provided between two adjacent base plates 201 located on opposite surfaces. Turning one wrench 211 can simultaneously control the locking and unlocking of two sets of locking members 203 and locking pins 103, facilitating operation. Figure 1 and Figure 2 In the middle, the male head 101 has two locking pins 103 on its front and rear surfaces respectively, and the female head 102 has two locking parts 200 on its front and rear surfaces respectively. The locking parts 200 and the locking pins 103 are in one-to-one correspondence. A wrench 211 is provided between the two locking parts 200 on the right side. By turning the wrench 211 on the right side, the two locking parts 200 on the right side can be locked and separated from the corresponding locking pins 103. A wrench 211 is also provided between the two locking parts 200 on the left side. By turning the wrench 211 on the right side, the two locking parts 200 on the right side can be locked and separated from the corresponding locking pins 103.

[0046] The substrate 201 is provided with a cover 206, the guide wheel 202 and the transmission belt 203 are located inside the cover 206, the cover 206 has an opening, the contact section extends out of the cover 206 through the opening, the cover 206 protects its internal structure and reduces the adhesion of impurities.

[0047] In this embodiment, the tensioning pulley 204 is located on the outer side of the transmission belt 203 and compresses the transmission belt 203 from the outside to the inside. In other embodiments not shown, the tensioning pulley 204 may also be located on the inner side of the transmission belt 203 and compress the transmission belt 203 from the inside to the outside, but it must be ensured that the guide pulleys 202 located on both sides of the tensioning pulley 204 are always in contact with the inner side of the transmission belt 203.

[0048] In this embodiment, the first direction is perpendicular to the tensioned section before compression. In other embodiments not shown, the first direction may also be set at other angles to the tensioned section before compression, and the specific angle is not limited.

[0049] In one embodiment, see [link to relevant documentation]. Figure 9 A slide plate 207 is slidably provided on the substrate 201 along the first direction, and an elastic member 205 is disposed between the slide plate 207 and the tensioning wheel 204; a driving member 208 is also provided on the substrate 201, which is used to make the slide plate 207 slide along the first direction to change the elastic force of the elastic member 205.

[0050] When the ambient temperature changes, the locking force required for the seal to achieve the required sealing effect also changes, leading to variations in the sealing performance. Existing locking mechanisms typically provide a constant locking force. Increasing the required locking force may reduce the sealing effect, while decreasing it may improve or even damage the seal. This invention adjusts the initial locking force of the locking element 200 on the seal by controlling the sliding plate 207 along a first direction via the drive element 208, based on the ambient temperature. This changes the elasticity of the elastic element 205 and the tension of the transmission belt 203, allowing for adjustment and setting of the locking force of the locking element 200 on the seal. The locking force can also be adjusted after a period of use, ensuring that the locking force provided by the locking element 200 matches the required force for the seal to achieve the required sealing effect. This guarantees the sealing performance to a certain extent, prevents damage, and provides flexible and convenient adjustment of the locking force.

[0051] The elastic element 205 is a compression spring, and the driving element 208 is a bolt or screw rotatably connected to the base plate 201. The driving element 208 is threadedly connected to the slide plate 207. Both the base plate 201 and the cover 206 have grooves 209 along a first direction on their inner sides. The slide plate 207 is slidably connected to the grooves 209, and a wheel frame 210 is slidably mounted within the grooves 209. A tensioning wheel 204 is rotatably mounted on the wheel frame 210, and the elastic element 205 is positioned between the slide plate 207 and the wheel frame 210. When the driving element 208 rotates relative to the base plate 201, the slide plate 207 slides along the grooves 209 to change the compression degree of the elastic element 205, thereby changing the elastic force of the elastic element 205. Specifically, when the drive member 208 moves the slide plate 207 closer to the tension wheel 204, the compression degree of the elastic member 205 increases and the elastic force increases; when the drive member 208 moves the slide plate 207 away from the tension wheel 204, the compression degree of the elastic member 205 decreases and the elastic force decreases.

[0052] In one embodiment, the substrate 201 is provided with a movable wheel 301, the axis of which is parallel to the axis of the guide wheel 202, and a contact section is located between the movable wheel 301 and one of the guide wheels 202; the substrate 201 is rotatably connected to the female head 102 and has a rotating shaft 302, the rotation range of the substrate 201 is between a first position and a second position, the rotation direction from the first position to the second position is referred to as the first rotation direction, and the rotation direction from the second position to the first position is referred to as the second rotation direction; the substrate 201 is also provided with an adjustment part, which is used to move the movable wheel 301 along a preset trajectory. The trajectory is arc-shaped with its center coinciding with the axis of the rotating shaft 302. The preset trajectory has a third position and a fourth position arranged sequentially along the first rotation direction. When locking the locking member 200 and the locking pin 103, the base plate 201 first rotates along the first rotation direction, and the movable wheel 301 is in the third position. After the base plate 201 is in the second position, the adjusting part moves the movable wheel 301 from the third position to the fourth position. When separating the locking member 200 and the locking pin 103, the adjusting part first moves the movable wheel 301 from the fourth position to the third position, and the base plate 201 then rotates along the second rotation direction.

[0053] Existing locking mechanisms typically require a hard compression between the locking member 200 and the locking pin 103. This can lead to asynchronous locking on both sides during operation, causing bending stress on the male connector 101 and female connector 102 during locking and unlocking, affecting the stability of current and signal transmission. In this invention, when locking the locking member 200 and locking pin 103, the base plate 201 first rotates along a first direction, with the movable wheel 301 in a third position. After the base plate 201 is in a second position, the adjusting unit moves the movable wheel 301 from the third position to a fourth position. When separating the locking member 200 and locking pin 103, the adjusting unit first moves the movable wheel 301 from the fourth position to the third position, and then the base plate 201 rotates along a second direction. This two-step method achieves the locking or disengaging process between the locking element 200 and the locking pin 103. During locking and disengaging, it reduces the height difference between the movable wheel 301 and the locking pin 103 in the insertion direction of the male head 101 and female head 102. Combined with the transmission belt 203, this avoids hard compression between the locking element 200 and the locking pin 103. It also, to a certain extent, prevents bending stress between the male head 101 and female head 102 during locking and disengaging due to asynchronous locking on both sides, ensuring the stability of current and signal transmission. Furthermore, the locking and disengaging process is more labor-saving and convenient to operate.

[0054] Understandably, during the locking and unlocking process of the locking element 200 and the locking pin 103, the movable wheel 301 and the locking pin 103 need to have a certain height difference in the direction of insertion of the male end 101 and the female end 102, so that the contact section of the transmission belt 203 can apply a locking force towards the female end 102 to the locking pin 103. The larger this height difference, the greater the locking force, but a larger external force is also required during locking and unlocking, and the wear on the contact section of the transmission belt 203 and the locking pin 103 is also greater; in order to balance the magnitude of the locking force, the external force used, and the wear, this height difference needs to be set within a suitable range.

[0055] When it is necessary to lock the locking member 200 and the locking post 103, the first step is to rotate the base plate 201 from the first position to the second position along the first rotation direction, and the second step is to move the movable wheel 301 from the third position to the fourth position; when it is necessary to separate the locking member 200 and the locking post 103, the first step is to move the movable wheel 301 from the fourth position to the third position, and the second step is to rotate the base plate 201 from the second position to the first position along the second rotation direction.

[0056] At least two guide rollers 202 are provided, and together with the movable roller 301, the transmission belt 203 forms a triangular structure, where two sides of the transmission belt 203 are the contact section and the tension section, respectively. Preferably, four guide rollers 202 are provided, such as... Figure 5 As shown, the transmission belt 203 between the movable wheel 301 and the uppermost guide wheel 202 is the contact section, and the transmission belt 203 between the two rightmost guide wheels 202 is the tensioning section.

[0057] The cover 206 has a guide hole 303 along a preset trajectory, and a movable shaft 304 is slidably mounted inside the guide hole 303. The movable wheel 301 is coaxial with and rotatably connected to the movable shaft 304. (See also...) Figure 12 and Figure 13 The adjustment unit includes a side frame 305, a knob 306, and arc-shaped blocks 307. The side frame 305 is integrally formed with the movable shaft 304 and slidably connected to the guide hole 303. The knob 306 is rotatably connected to the side frame 305, and its axis is parallel to the axis of the movable wheel 301. The knob 306 is elongated. Two arc-shaped blocks 307 are provided and are located on both sides of the guide hole 303. When the locking member 200 needs to be locked with the locking pin 103, the base plate 201 first rotates along the first rotation direction. During this process, the movable wheel 301 is in the third position. When the base plate 201 is in the second position, the knob 306 is manually rotated to make it tangential to the guide hole 303. Then, the knob 306 is manually turned to move the movable wheel 301 along the guide hole 303 to the fourth position. At this time, the knob 306 is located between the two arc-shaped blocks 307. Then, the knob 306 is manually rotated to make it radially along the guide hole 303. Figure 13 As shown, the position of the movable wheel 301 within the guide hole 303 is locked. When it is necessary to separate the locking member 200 from the locking pin 103, first manually rotate the knob 306 to make it tangential to the guide hole 303 to release the locking of the movable wheel 301 within the guide hole 303, then manually turn the knob 306 to move the movable wheel 301 to the third position, and the base plate 201 then rotates along the second rotation direction.

[0058] For example, see Figure 4 and Figure 5 For the right-side locking member 200, the first rotation direction is clockwise, the second rotation direction is counterclockwise, and the third position is located to the right of the fourth position. The highest point of the transmission belt 203 above the movable wheel 301 is called the apex, and the lowest point of the locking pin 103 is called the bottom point. To generate a locking force on the male head 101 and the female head 102, when the locking member 200 and the locking pin 103 are locked, in the insertion direction of the male head 101 and the female head 102 (… Figure 5In the vertical direction, the vertex must be higher than the bottom point. In the prior art, the vertical distance between the vertex and the bottom point is constant. When locking the locking member 200 and the locking pin 103, the above-mentioned problem of asynchronous locking on both sides may occur. When locking the locking member 200 and the locking pin 103, the base plate 201 first rotates clockwise, and the movable wheel 301 is in the third position. When the base plate 201 is in the second position, the vertical distance between the vertex and the bottom point is the first value. Then, manually rotate the knob 306 to make it tangential to the guide hole 303. Manually turn the knob 306 to move the movable wheel 301 to the fourth position. At this time, the knob 306 is located between the two arc blocks 307. Then, manually rotate the knob 306 to make it radial to the guide hole 303 to lock the position of the movable wheel 301 in the guide hole 303. See [reference needed]. Figure 13 At this point, the vertical distance between the apex and the bottom point is the second value, which is greater than the first value. When it is necessary to separate the locking member 200 from the locking pin 103, first manually rotate the knob 306 to make it tangential to the guide hole 303 to cancel the locking of the position of the movable wheel 301 in the guide hole 303. Then manually turn the knob 306 to move the movable wheel 301 to the third position. Then manually rotate the knob 306 to make it radial to the guide hole 303. At this point, the vertical distance between the apex and the bottom point decreases from the second value to the first value. After that, the base plate 201 rotates counterclockwise.

[0059] In one embodiment, the substrate 201 is further provided with a limiting part 400, which allows the movable wheel 301 to rotate in a second direction of rotation, while limiting the movable wheel 301 to rotate in a first direction of rotation. When the locking member 200 is locked with the locking pin 103, the substrate 201 rotates in the first direction of rotation, and the transmission belt 203 and the locking pin 103 move relative to each other.

[0060] When existing cable connectors operate in harsh environments, the surface of the locking post 103 is prone to accumulating a lot of impurities, which increases the wear between the locking post 103 and the locking element 200 and affects the locking force. When the locking member 200 needs to be locked with the locking post 103, the base plate 201 rotates along the first rotation direction. When the outer side of the transmission belt 203 contacts the locking post 103, the base plate 201 continues to rotate along the first rotation direction. The movable wheel 301 drives the transmission belt 203 to move relative to the locking post 103 along the first rotation direction. The transmission belt 203 is subjected to the reverse friction force of the locking post 103, which causes the movable wheel 301 to have a tendency to rotate along the first rotation direction, but it is restricted by the limiting part 400. Therefore, the movable wheel 301 cannot rotate along the first rotation direction. The transmission belt 203 and the locking post 103 move relative to each other to scrape off the impurities attached to the bottom of the locking post 103, reduce the wear between the locking post 103 and the locking member 200, and to a certain extent ensure the locking force and the pressing effect of the locking member 200 on the sealing member, thus ensuring the sealing performance.

[0061] Among them, see Figure 11 , Figure 12 and Figure 14 The limiting part 400 includes a slot 401 and a tooth 402. Multiple slots 401 are evenly distributed circumferentially on the outer surface of the movable wheel 301. Each slot 401 has a unidirectional structure and is located at the center of the axial direction of the movable wheel 301. A shaft is coaxially mounted on the knob 306, and the tooth 402 is mounted on the shaft. Rotating the knob 306 causes the tooth 402 to rotate, extending into or disengaging from the slot 401, thus creating or canceling the unidirectional limiting effect on the movable wheel 301. When the movable wheel 301 is in the third and fourth positions, the knob 306 is radially positioned along the guide hole 303. At this time, the tooth 402 extends into the slot 401, creating a unidirectional limiting effect on the movable wheel 301. When the movable wheel 301 moves between the third and fourth positions, the knob 306 is tangentially positioned along the guide hole 303 and can slide along the guide hole 303. At this time, the end of the locking tooth 402 disengages from the slot 401, thus removing the unidirectional restriction effect on the movable wheel 301. In addition, a spring piece 403 is provided between the locking tooth 402 and the side frame 305. The spring piece 403 is used to make the end of the locking tooth 402 tend to extend into the slot 401.

[0062] It is worth noting that during the sliding of the knob 306 along the guide hole 303, the knob 306 moves tangentially along the guide hole 303, and the limiting part 400 cancels the unidirectional limiting effect on the movable wheel 301. Figure 5 When the locking member 200 needs to be locked with the locking post 103, the base plate 201 rotates clockwise, the movable wheel 301 is in the third position, the knob 306 is arranged radially along the guide hole 303, the limiting part 400 generates a one-way limiting effect, the movable wheel 301 cannot rotate clockwise, causing the transmission belt 203 above it to be unable to move to the right, so that the transmission belt 203 and the locking post 103 can move relative to each other, so as to scrape off the impurities attached to the bottom of the locking post 103. When the substrate 201 is in the second position, manually rotate the knob 306 to make it tangential to the guide hole 303. At the same time, the limiting part 400 cancels the one-way limiting function. Manually rotate the knob 306 to move the movable wheel 301 along the guide hole 303 to the fourth position. This will drive the transmission belt 203 above and below the movable wheel 301 to move to the left. However, since the upper transmission belt 203 is difficult to move to the left under the squeezing action of the locking pin 103, only the lower transmission belt 203 can move to the left. Therefore, during this process, the limiting part 400 needs to cancel the one-way limiting function, and the movable wheel 301 can rotate clockwise, allowing the lower transmission belt 203 to move to the left. When the movable wheel 301 moves to the fourth position, the knob 306 is located between the two arc-shaped blocks 307. Manually rotate the knob 306 again to make it radial along the guide hole 303 to lock the position of the movable wheel 301 within the guide hole 303. At the same time, the limiting part 400 resumes the one-way limiting function.

[0063] In one embodiment, see [link to relevant documentation]. Figure 5 and Figure 6 The substrate 201 is also provided with a cleaning member 404 that contacts the outside of the transmission belt 203. When the locking member 200 is separated from the locking post 103, the substrate 201 rotates in the second direction, and the transmission belt 203 and the cleaning member 404 move relative to each other.

[0064] When it is necessary to separate the locking member 200 from the locking post 103, initially the outer side of the transmission belt 203 contacts the locking post 103, the base plate 201 rotates in the second direction of rotation, and the transmission belt 203 moves relative to the locking post 103 in the second direction of rotation. The transmission belt 203 is subjected to the reverse friction force of the locking post 103, which causes the transmission belt 203 to have a tendency to run in the second direction of rotation and is allowed by the limiting part 400. Therefore, the transmission belt 203 and the cleaning member 404 move relative to each other. The cleaning member 404 scrapes off the impurities attached to the outer side of the transmission belt 203, further reducing the wear between the locking post 103 and the locking member 200, ensuring the locking force and the pressing effect of the locking member 200 on the seal, and ensuring the sealing performance. Furthermore, when the locking member 200 is separated from the locking pin 103, the transmission belt 203 simultaneously runs in the second direction of rotation relative to the base plate 201 to change the contact position between the transmission belt 203 and the locking pin 103, so that the wear and use of the transmission belt 203 are more uniform and its service life is extended.

[0065] The cleaning component 404 may be part of the cover 206, and may have a scraper structure and contact the outer side of the drive belt 203.

[0066] The working principle of this invention is as follows:

[0067] When connecting the male connector 101 and the female connector 102, first insert the male connector 101 and the female connector 102 so that the terminal 105 is inserted into the corresponding socket. Then, lock the locking member 200 and the locking pin 103. Specifically, turn the wrench 211 to make the base plate 201 rotate from the first position to the second position along the first rotation direction. During this process, the movable wheel 301 is in the third position. After the base plate 201 is in the second position, manually turn the knob 306 to make it move along the tangential direction of the guide hole 303. Manually turn the knob 306 to move the movable wheel 301 along the guide hole 303 to the fourth position. At this time, the knob 306 is located between the two arc blocks 307. Then manually turn the knob 306 to make it move along the radial direction of the guide hole 303 to lock the position of the movable wheel 301 in the guide hole 303. When it is necessary to separate the male connector 101 from the female connector 102, first separate the locking member 200 from the locking pin 103. Specifically, first manually rotate the knob 306 so that it is tangential to the guide hole 303 to release the locking of the position of the movable wheel 301 in the guide hole 303. Then manually turn the knob 306 to move the movable wheel 301 to the third position. Then reverse the lever 211 to make the base plate 201 rotate from the second position to the first position along the second rotation direction. When the base plate 201 is in the first position, pull the male connector 101 and the female connector 102 apart so that the terminal 105 is disengaged from the corresponding socket. This two-step method achieves the locking or disengaging process between the locking element 200 and the locking pin 103. During locking and disengaging, it reduces the height difference between the movable wheel 301 and the locking pin 103 in the insertion direction of the male head 101 and female head 102. Combined with the transmission belt 203, this avoids hard compression between the locking element 200 and the locking pin 103. It also, to a certain extent, prevents bending stress between the male head 101 and female head 102 during locking and disengaging due to asynchronous locking on both sides, ensuring the stability of current and signal transmission. Furthermore, the locking and disengaging process is more labor-saving and convenient to operate.

[0068] When the locking member 200 needs to be locked to the locking post 103, the base plate 201 rotates in the first direction of rotation. When the outer side of the transmission belt 203 contacts the locking post 103, the base plate 201 continues to rotate in the first direction of rotation. The movable wheel 301 drives the transmission belt 203 to move relative to the locking post 103 in the first direction of rotation. The transmission belt 203 is subjected to the reverse friction force of the locking post 103, which causes the movable wheel 301 to have a tendency to rotate in the first direction of rotation, but it is restricted by the limiting part 400. Therefore, the movable wheel 301 cannot rotate in the first direction of rotation. The transmission belt 203 and the locking post 103 move relative to each other to scrape off the impurities attached to the bottom of the locking post 103, reduce the wear between the locking post 103 and the locking member 200, and to a certain extent ensure the locking force and the pressing effect of the locking member 200 on the sealing member, thus ensuring the sealing performance.

[0069] When it is necessary to separate the locking member 200 from the locking post 103, initially the outer side of the transmission belt 203 contacts the locking post 103, the base plate 201 rotates in the second direction of rotation, and the transmission belt 203 moves relative to the locking post 103 in the second direction of rotation. The transmission belt 203 is subjected to the reverse friction force of the locking post 103, which causes the transmission belt 203 to have a tendency to run in the second direction of rotation and is allowed by the limiting part 400. Therefore, the transmission belt 203 and the cleaning member 404 move relative to each other. The cleaning member 404 scrapes off the impurities attached to the outer side of the transmission belt 203, further reducing the wear between the locking post 103 and the locking member 200, ensuring the locking force and the pressing effect of the locking member 200 on the seal, and ensuring the sealing performance. Furthermore, when the locking member 200 is separated from the locking pin 103, the transmission belt 203 simultaneously runs in the second direction of rotation relative to the base plate 201 to change the contact position between the transmission belt 203 and the locking pin 103, so that the wear and use of the transmission belt 203 are more uniform and its service life is extended.

[0070] After connecting the male head 101 and the female head 102 and locking the locking member 200 and the locking pin 103, the locking member 200 applies a locking force towards the female head 102 to the locking pin 103. When the locking force decreases, the tension of the transmission belt 203 is smaller, and the elastic member 205 causes the tensioning wheel 204 to move closer to and squeeze the tensioning section along the first direction, thereby increasing the tension of the transmission belt 203 and increasing the locking force. When the locking force increases, the tension of the transmission belt 203 is larger, overcoming the elastic force of the elastic member 205 and causing the tensioning wheel 204 to move away from the tensioning section along the first direction, thereby reducing the tension of the transmission belt 203 and reducing the locking force. This adaptively adjusts the magnitude of the locking force, ensuring the pressing effect of the locking member 200 on the sealing member to a certain extent and ensuring the sealing performance. In addition, the sliding plate 207 can be controlled to slide along the first direction by the drive component 208 according to the ambient temperature, so that the elastic force of the elastic component 205 and the tension of the transmission belt 203 change, thereby adjusting and setting the initial locking force of the locking component 200 on the seal. The locking force of the locking component 200 on the seal can also be adjusted a second time after a period of use, so that the locking force provided by the locking component 200 is adapted to the locking force required for the seal to achieve the standard sealing effect, thus ensuring the sealing effect of the seal to a certain extent and avoiding damage. At the same time, the adjustment of the locking force provided by the locking component 200 is more flexible and convenient.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A cable connection device with strong current-carrying capacity, characterized in that, The device includes a male and a female connector, which can be inserted into each other and are sealed together. The male connector has multiple locking pins, and the female connector has multiple locking elements. Each locking pin corresponds to a locking element. Each locking element includes a base plate rotatably connected to the female connector and multiple guide wheels rotatably mounted on the base plate with parallel axes. All guide wheels have a common annular and flexible transmission belt on their outer sides. The transmission belt has a constant dimension in its trajectory direction and includes a contact section. When the locking element locks with the locking pins, the outer side of the contact section contacts the locking pins and applies a locking force toward the female connector. The transmission belt also includes a tensioning section. The base plate is also provided with a tensioning wheel and an elastic element. The tensioning wheel is slidably connected to the base plate in a first direction. The elastic element is used to make the tensioning wheel tend to move toward and squeeze the tensioning section in the first direction. The first direction is set at an angle to the tensioning section before it is squeezed.

2. The cable connection device with strong current-carrying capacity according to claim 1, characterized in that, A sliding plate is provided on the substrate along a first direction, and an elastic element is disposed between the sliding plate and the tensioning wheel; a driving element is also provided on the substrate, which is used to make the sliding plate slide along the first direction to change the elastic force of the elastic element.

3. The cable connection device with strong current-carrying capacity according to claim 2, characterized in that, The substrate is provided with a movable wheel, the axis of which is parallel to the axis of the guide wheel, and the contact section is located between the movable wheel and one of the guide wheels; the substrate is rotatably connected to the female head and has a rotating shaft, and the rotation range of the substrate is between a first position and a second position. The rotation direction from the first position to the second position is called the first rotation direction, and the rotation direction from the second position to the first position is called the second rotation direction. The base plate is also provided with an adjustment part, which is used to move the movable wheel along a preset trajectory. The preset trajectory is arc-shaped and the center of the circle coincides with the axis of the rotating shaft. The preset trajectory has a third position and a fourth position arranged sequentially along the first rotation direction. When locking the locking member and the locking pin, the base plate first rotates along the first rotation direction and the movable wheel is in the third position. After the base plate is in the second position, the adjustment part moves the movable wheel from the third position to the fourth position. When separating the locking member and the locking pin, the adjustment part first moves the movable wheel from the fourth position to the third position, and the base plate then rotates along the second rotation direction.

4. The cable connection device with strong current carrying capacity according to claim 3, characterized in that, The base plate is also provided with a limiting part, which allows the movable wheel to rotate in the second direction of rotation, while limiting the movable wheel to rotate in the first direction of rotation; when the locking member is locked with the locking pin, the base plate rotates in the first direction of rotation, and the transmission belt and the locking pin move relative to each other.

5. The cable connection device with strong current carrying capacity according to claim 4, characterized in that, The substrate is also provided with a cleaning component that contacts the outside of the transmission belt. When the locking component is separated from the locking post, the substrate rotates in the second direction of rotation, and the transmission belt and the cleaning component move relative to each other.

6. The cable connection device with strong current carrying capacity according to claim 2, characterized in that, The drive component is a bolt that is rotatably connected to the base plate, and the drive component is threadedly connected to the slide plate.

7. The cable connection device with strong current-carrying capacity according to claim 1, characterized in that, The first direction is perpendicular to the tensioned section before it is compressed.

8. The cable connection device with strong current carrying capacity according to claim 1, characterized in that, The tensioner pulley is located on the outside of the drive belt and squeezes the drive belt from the outside to the inside.

9. The cable connection device with strong current carrying capacity according to claim 1, characterized in that, The base plate is provided with a cover, the guide wheel and the transmission belt are located inside the cover, the cover has an opening, and the contact section extends out of the cover through the opening.

10. The cable connection device with strong current-carrying capacity according to claim 1, characterized in that, There are four locking pins and four locking parts. The four locking parts are located on two opposite surfaces of the female head, and a wrench is provided between two adjacent base plates located on opposite surfaces.

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