A bellows joint

Abstract

The utility model relates to the technical field of connector, more specifically, it relates to a corrugated pipe joint, including joint body, sliding sheet and having elastic button, the both ends of joint body are equipped with the socket for installing corrugated pipe, be equipped with the mounting groove on the lateral wall of socket, sliding sheet and the outer wall of socket are along the axial direction of socket sliding connection, button and the lateral wall of mounting groove are rotatively connected, the axis of button rotation is perpendicular with the axis of socket, the one end of button is inwards and is bent and forms the button position for with the corrugated pipe outer surface wave trough interlocking, the other end of button is outward and is bent and forms the second limit portion, the inside of sliding sheet is equipped with the first limit portion, the first limit portion is used for when sliding sheet slides in the direction of being away from joint body, pushes the second limit portion and moves to the inside, through the sliding sliding sheet, drives the button position of button and enters or separates the wave trough of corrugated pipe outer surface, realizes the locking and unlocking of corrugated pipe, makes the operation simple, convenient of dismounting corrugated pipe.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and more specifically, to a corrugated pipe connector. Background Technology

[0002] With the continuous development of modern construction technology, the types and installation requirements of conduits have also increased. Corrugated pipes are flexible conduits used on construction sites to protect electrical wires and cables, and are widely used as cable protection sleeves. With the continuous optimization and improvement of construction techniques, the demand for corrugated pipe connections and secondary maintenance is also constantly increasing.

[0003] Patent CN103278895B discloses a bellows connector and a bellows connection assembly and connector accessories using the connector. The bellows connector includes a connecting sleeve, with a locking sleeve inserted or fitted at the rear end of the connecting sleeve. An axial gap is provided between the locking sleeve and the connecting sleeve, allowing the locking sleeve to move back and forth along the axial direction of the connecting sleeve. The connecting sleeve is provided with a limiting structure that cooperates with the locking sleeve to limit the axial movement range of the locking sleeve. At least two radially elastically deformable spring claws are evenly distributed around the locking sleeve and are used to engage with the outer circumferential groove of the bellows. The rear end of the spring claw is provided with a guide surface for guiding the bellows from back to front into the locking sleeve. The front end of the spring claw... The device has a stop surface facing forward, designed to engage with the groove wall of the bellows' outer circumference to prevent the bellows from dislodging from the rear of the locking sleeve. The spring pawl has a force-applying part for the operator to apply force, causing it to expand radially outward. During installation, the bellows is inserted into the bellows connecting sleeve from back to front. During insertion, guided by the guide surface on the spring pawl, it expands radially outward. After insertion, the spring pawl resets and engages in the bellows groove. For disassembly, the locking sleeve is pushed forward relative to the connecting sleeve. Once the spring pawl is loosened relative to the bellows, external force is applied to it to expand radially outward, ensuring the bellows can be easily dislodged from the locking sleeve. However, in this design, disassembling the bellows requires manually applying external force to the force-applying part of the spring pawl to expand it radially, and maintaining the spring pawl's shape while pulling out the bellows, making the operation quite difficult. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology in that the disassembly of corrugated pipes is difficult, and to provide a corrugated pipe connector that can easily and conveniently complete the disassembly and assembly of corrugated pipes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A corrugated pipe connector is provided, comprising a connector body, a sliding plate, and an elastic retaining plate. The connector body has sockets at both ends for mounting corrugated pipes. The sidewalls of the sockets have mounting grooves. The sliding plate is slidably connected to the outer wall of the socket along its axial direction. The retaining plate is rotatably connected to the sidewall of the mounting groove, with the axis of rotation of the retaining plate perpendicular to the axis of the socket. One end of the retaining plate is bent inward to form a snap-fit ​​for engaging with a trough on the outer surface of the corrugated pipe. The other end of the retaining plate is bent outward to form a second limiting portion. A first limiting portion is provided on the inner side of the sliding plate. The first limiting portion is used to push the second limiting portion inward when the sliding plate slides away from the connector body.

[0006] In this utility model of a corrugated pipe joint, when installing the corrugated pipe, the direction closer to the socket axis is defined as inward, and the direction farther from the socket axis as outward. The sliding plate is slid away from the joint body. After the first limiting part contacts the second limiting part, it pushes the second limiting part inward, causing the buckle to rotate and the buckle to move outward, leaving space for inserting the corrugated pipe. The two sections of corrugated pipe are respectively inserted into the sockets at both ends of the joint body. The sliding plate is then slid closer to the joint body. The portion of the buckle located between the buckle and the second limiting part is named the buckle body. The first limiting part pushes the buckle body, causing the buckle to rotate and the buckle to engage in the trough of the corrugated pipe's outer surface. When the corrugated pipe is pulled away from the joint body, due to… The buckle engages within the corrugation trough. The force exerted on the buckle by the corrugations is primarily axial, with a relatively small torque, making it difficult to rotate the buckle. Simultaneously, when the buckle rotates, the second limiting part is blocked by the sliding piece, thus securing the corrugated pipe. When disassembling the corrugated pipe, the sliding piece is slid away from the joint body. After the first limiting part contacts the second limiting part, it pushes the second limiting part inward, causing the buckle to rotate and the buckle to move outward until the buckle disengages from the corrugation trough on the outer surface of the corrugated pipe. The buckle is elastic and can deform slightly, preventing damage to the corrugated pipe or the corrugated pipe itself when it disengages from the corrugation trough. Locking and unlocking of the corrugated pipe can be achieved by sliding the sliding piece. Disassembly and assembly of the corrugated pipe will not cause damage to the joint, allowing for repeated disassembly and assembly.

[0007] Furthermore, the bending angle of the second limiting part is smaller than the bending angle of the latch. The larger bending angle of the latch reduces the torque and increases the maximum resistance that the latch can provide to the bellows, making the fixation of the bellows more secure; the smaller bending angle of the second limiting part allows the first limiting part of the slider to push the second limiting part to generate a larger torque, reducing the pushing resistance.

[0008] Furthermore, the first limiting part includes a first limiting rib, which is disposed on the inner side of the slide piece. A guide surface for pushing the second limiting part is provided on the side of the first limiting rib away from the connector body. The guide surface is inclined outwards in a direction away from the connector body. When the slide piece slides in a direction away from the connector body, the guide surface pushes the outer surface of the second limiting part. The inclination direction of the outer surface of the second limiting part is the same as that of the guide surface. When the slide piece slides in a direction away from the connector body, the guide surface contacts the outer surface of the second limiting part, converting the axial sliding of the slide piece into the rotation of the fastener. The inclined design of the guide surface increases the contact area between the first limiting rib and the second limiting part, reduces wear caused by the collision of the first limiting rib and the second limiting part, and extends the service life of the component.

[0009] Furthermore, the first limiting part also includes a second limiting rib for preventing the second limiting part from moving towards the socket axis. The second limiting rib is disposed on the inner side of the sliding piece, and the side of the second limiting rib near the connector body has a limiting surface that mates with the inner surface of the second limiting part. When the bellows is pushed towards the connector body, the second limiting rib limits the second limiting part, preventing the fastener from rotating and making the bellows more securely fixed.

[0010] Furthermore, the inner wall of the slide is an arc-shaped surface that mates with the outer wall of the socket. A limiting groove is provided on the inner wall of the slide, and the first limiting rib is located at the bottom of the limiting groove. While providing movement space for the second limiting part, the limiting groove also allows the arc-shaped surface of the inner wall of the slide without the limiting groove to better fit the socket, making the movement of the slide more stable.

[0011] Furthermore, the side wall of the sliding piece is provided with a clearance opening to provide rotation space for the fastening piece. When the fastening piece rotates, the clearance opening can provide sufficient rotation space to prevent interference between the sliding piece and the fastening piece, which would prevent the fastening piece from rotating fully. This ensures that the locking and unlocking functions of the bellows can be performed normally, and reduces wear on the fastening piece and the sliding piece, thus extending their service life.

[0012] Furthermore, the outer wall of the socket is provided with a sliding groove, and the inner side wall of the slide is provided with a sliding buckle, which is slidably installed in the sliding groove. When the slide is pushed axially, the sliding buckle slides along the sliding groove, causing the slide to slide along the sliding groove.

[0013] Furthermore, a damping structure is provided between the sliding buckle and the sliding groove to increase the sliding resistance of the sliding piece. The damping structure increases the amount of external force required for the sliding piece to slide, preventing accidental sliding of the sliding piece from causing the buckle to unlock, ensuring that the buckle is always in the locked state when no disassembly or assembly work is performed, and improving the reliability of the bellows installation.

[0014] Furthermore, both the slide groove and the sliding buckle are provided in two sets, and the two sets of slide grooves are symmetrically distributed along the circumferential direction of the socket. The damping structure includes a plurality of first guide teeth and a plurality of second guide teeth that cooperate with the first guide teeth. The first guide teeth are disposed on the sliding buckle, and the second guide teeth are disposed on the side wall of the slide groove. The first guide teeth are engaged between two adjacent second guide teeth. The distance between the side wall of the sliding buckle away from the first guide teeth and the side wall of the slide groove away from the second guide teeth is greater than or equal to the tooth height of the first guide teeth. The first guide tooth of the sliding buckle engages with the second guide tooth of the sliding groove. The elasticity of the sliding piece itself causes the two sets of sliding buckles to contract inward, increasing the pressure between the sliding buckle and the sliding groove, and increasing the friction between the first guide tooth and the second guide tooth. When the sliding piece is slidable, an external force is applied to the sliding piece to overcome the friction between the first guide tooth and the second guide tooth, causing the first guide tooth to gradually pass over the second guide tooth, disengage, and allow the sliding buckle to continue sliding. The engagement of the first guide tooth and the second guide tooth increases the amount of external force required for the sliding piece to slide, preventing accidental sliding. When the sliding buckle passes over the second guide tooth, the sliding piece expands outward, and the sliding buckle moves towards the side of the sliding groove away from the second guide tooth. The maximum distance of movement is the tooth height of the first guide tooth. The distance between the sliding buckle and the side wall of the sliding groove is greater than or equal to the tooth height of the first guide tooth, which ensures that the first guide tooth and the second guide tooth have enough space to be staggered and disengaged, ensuring that the sliding piece slides normally.

[0015] Furthermore, both the sliding plate and the fastening plate are made of plastic. Plastic has good elasticity, preventing damage to the sliding plate and fastening plate during operation; the corrosion resistance of plastic can extend the service life of the connector.

[0016] Compared with the prior art, the beneficial effects of this utility model are: The bellows connector of this utility model: 1. The bellows can be locked and unlocked by the simple operation of the sliding plate, making the disassembly and assembly of the bellows simple and convenient; 2. The friction between the first guide tooth and the second guide tooth provides damping, increasing the amount of external force required for the sliding plate, so that the plate will not slide due to accidental contact or other unexpected factors when the bellows does not need to be disassembled and assembled, thus preventing accidental unlocking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the bellows joint of this utility model when the bellows is not locked. Figure 2 This is a schematic diagram of the structure of the bellows joint of this utility model after locking the bellows; Figure 3 This is a schematic diagram of the corrugated pipe joint of this utility model without the corrugated pipe installed; Figure 4This is a schematic diagram of the joint body and socket of the corrugated pipe joint of this utility model; Figure 5 This is a schematic diagram of the structure of the sliding plate of the bellows joint of this utility model; Figure 6 This is a schematic diagram of the structure of the buckle of the corrugated pipe connector of this utility model; Figure 7 This is a schematic diagram of the structure of the corrugated pipe joint of this utility model, showing the fit between the sliding buckle and the sliding groove.

[0018] In the attached diagram: 1. Connector body; 2. Socket; 21. Mounting groove; 22. Fixed shaft; 23. Sliding groove; 231. Second guide tooth; 3. Sliding piece; 31. First limiting part; 311. First limiting rib; 312. Second limiting rib; 32. Limiting groove; 33. Clearance opening; 34. Sliding buckle; 341. First guide tooth; 4. Buckle piece; 41. Buckle position; 42. Second limiting part; 43. Buckle piece body; 431. Rotating hole; 5. Corrugated pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 like Figures 1 to 6The first embodiment of the corrugated pipe connector of this utility model is shown, including a connector body 1, a sliding plate 3, and an elastic fastener 4. The connector body 1 has sockets 2 for installing corrugated pipes 5 at both ends. The side wall of the socket 2 is provided with an installation groove 21. The sliding plate 3 is slidably connected to the outer wall of the socket 2 along the axial direction of the socket 2. The fastener 4 is rotatably connected to the side wall of the installation groove 21. The axis of rotation of the fastener 4 is perpendicular to the axis of the socket 2. One end of the fastener 4 is bent inward to form a fastening position 41 for engaging with the trough of the outer surface of the corrugated pipe 5. The other end of the fastener 4 is bent outward to form a second limiting part 42. The inner side of the sliding plate 3 is provided with a first limiting part 31. The first limiting part 31 is used to push the second limiting part 42 to move inward when the sliding plate 3 slides away from the connector body 1.

[0022] In this utility model of a corrugated pipe joint, when installing the corrugated pipe 5, the direction closer to the axis of the socket 2 is defined as inward, and the direction farther from the axis of the socket 2 is defined as outward. The sliding plate 3 is slid away from the joint body 1. After the first limiting part 31 contacts the second limiting part 42, the second limiting part 42 is pushed inward, causing the fastening piece 4 to rotate and the fastening position 41 to move outward, leaving space for the insertion of the corrugated pipe 5. Figure 1 As shown; insert the two corrugated pipe sections 5 into the sockets 2 located at both ends of the connector body 1, slide the sliding piece 3 towards the connector body 1, and name the part of the fastening piece 4 located between the fastening position 41 and the second limiting part 42 as the fastening piece body 43. The first limiting part 31 pushes the fastening piece body 43, causing the fastening piece 4 to rotate, so that the fastening position 41 is engaged in the trough of the outer surface of the corrugated pipe 5, as shown. Figure 2 As shown; when the bellows 5 is pulled away from the joint body 1, since the buckle 41 is engaged in the trough, the force exerted by the bellows on the buckle 41 is mainly axial force, with a small torque, making it difficult to push the buckle 4 to rotate. At the same time, when the buckle 4 rotates, the second limiting part 42 is blocked by the sliding piece 3, thus fixing the bellows 5. When disassembling the bellows 5, the sliding piece 3 is slid away from the joint body 1. After the first limiting part 31 contacts the second limiting part 42, it pushes the second limiting part 42 to move inward, causing the buckle 4 to rotate and the buckle 41 to move outward until the buckle 41 disengages from the trough on the outer surface of the bellows 5. The buckle 41 is elastic and can deform slightly, allowing the buckle 41 to smoothly disengage from the trough on the outer surface of the bellows 5 without damage or damage to the bellows 5. Figure 1 As shown, the bellows 5 can be locked and unlocked by simply sliding the slider 3, making the disassembly and assembly of the bellows 5 simple and convenient.

[0023] In this embodiment, as Figure 4 and Figure 6As shown, the mounting groove 21 has a fixed shaft 22 on two opposite side walls, and the fastener body 43 has a rotating hole 431 on both sides that is rotatably connected to the fixed shaft 22. The fixed shaft 22 is rotatably connected to the rotating hole 431. Both the fastener 4 and the sliding piece 3 are arc-shaped structures.

[0024] like Figure 1 , Figure 2 and Figure 6 As shown, the bending angle of the second limiting part 42 is smaller than that of the buckle 41. The buckle 41 has a larger bending angle, which reduces the torque and increases the maximum resistance that the buckle 41 can provide to the bellows 5, making the fixation of the bellows 5 more stable; the second limiting part 42 has a smaller bending angle, which makes the torque when the first limiting part 31 of the slider 3 pushes the second limiting part 42 greater, reducing the pushing resistance.

[0025] like Figure 5 As shown, the first limiting part 31 includes a first limiting rib 311, which is disposed on the inner side of the slide 3. The side of the first limiting rib 311 away from the connector body 1 has a guide surface for pushing the second limiting part 42. The guide surface is inclined outwards in the direction away from the connector body 1. When the slide 3 slides away from the connector body 1, the guide surface pushes the outer surface of the second limiting part 42. The inclination direction of the outer surface of the second limiting part 42 is the same as that of the guide surface. When the slide 3 slides away from the connector body 1, the guide surface contacts the outer surface of the second limiting part 42, converting the axial sliding of the slide 3 into the rotation of the fastener 4 around the fixed axis 22. The guide surface and the outer surface of the second limiting part 42 are inclined surfaces with the same inclination direction, which can reduce wear caused by the collision of the first limiting rib 311 and the second limiting part 42, and extend the service life of the component.

[0026] The sliding plate 3, the fastening plate 4, the connector body 1, and the socket 2 are all made of plastic. Plastic has good elasticity, preventing damage to the sliding plate 3 and fastening plate 4 during operation; the corrosion resistance of plastic can extend the service life of the connector.

[0027] The working principle of the corrugated pipe joint in this embodiment is as follows: When installing the corrugated pipe 5, the sliding plate 3 is axially slid away from the joint body 1, causing the first limiting rib 311 to move. After the guide surface of the first limiting rib 311 contacts the outer surface of the second limiting part 42, the axial sliding of the sliding plate 3 is converted into the inward movement of the second limiting part 42, causing the fastener 4 to rotate around the fixed shaft 22, and causing the fastener 41 to move outward, leaving space for inserting the corrugated pipe 5. The two sections of corrugated pipe 5 are respectively inserted into the sockets 2 at both ends of the joint body 1. The sliding plate 3 is slid towards the joint body 1, and the first limiting part 31 pushes the fastener body 43, causing the fastener 4 to rotate around the fixed shaft 22, so that the fastener 41 is engaged in the trough of the outer surface of the corrugated pipe 5. When the corrugated pipe 5 is pulled away from the joint body 1, since the fastener 41 is engaged in the trough, the force exerted by the corrugations of the corrugated pipe 5 on the fastener 41 is mainly axial force. The force and torque that can drive the buckle 4 to rotate are small, making it difficult to push the buckle 4 to rotate. At the same time, when the buckle 4 rotates, the second limiting part 42 will be blocked by the guide surface of the slide 3. Since the bending angle of the second limiting part 42 is small and the guide surface is an inclined surface with the same inclination direction as the second limiting part 42, the axial force generated by the second limiting part 42 on the slide 3 is small, making it difficult to push the slide 3 to slide. This ensures that the buckle 41 will not detach from the bellows 5 without external force to slide the slide 3, thus fixing the bellows 5. When disassembling the bellows 5, slide the slide 3 away from the joint body 1. After the first limiting part 31 contacts the second limiting part 42, push the second limiting part 42 to move inward, causing the buckle 4 to rotate around the fixed shaft 22 and causing the buckle 41 to move outward until the buckle 41 detaches from the trough of the outer surface of the bellows 5, pulling the bellows 5 out of the socket 2, thus completing the disassembly of the bellows 5.

[0028] Example 2 This embodiment is the second embodiment of the corrugated pipe joint of this utility model. This embodiment is similar to the first embodiment, except that, as follows: Figure 5 As shown, the first limiting part 31 also includes a second limiting rib 312 for preventing the second limiting part 42 from moving towards the axis of the socket 2. The second limiting rib 312 is disposed on the inner side of the sliding piece 3, and the side of the second limiting rib 312 near the connector body 1 has a limiting surface that mates with the inner surface of the second limiting part 42. When the corrugated pipe 5 is pushed towards the connector body 1, the second limiting rib 312 limits the second limiting part 42, preventing the fastener 4 from rotating, thus making the corrugated pipe 5 more securely fixed.

[0029] The inner wall of the slide plate 3 is an arc-shaped surface that mates with the outer wall of the socket 2. A limiting groove 32 is provided on the inner wall of the slide plate 3, and a first limiting rib 311 is provided at the bottom of the limiting groove 32. While providing movement space for the second limiting part 42, the limiting groove 32 also allows the arc-shaped surface of the inner wall of the slide plate 3 without the limiting groove 32 to fit the socket 2 more closely, making the movement of the slide plate 3 more stable.

[0030] like Figure 3 and Figure 5 As shown, the side wall of the slider 3 is provided with a clearance opening 33 to provide rotation space for the fastener 4. When the fastener 4 rotates around the fixed shaft 22, the clearance opening 33 can provide sufficient rotation space to prevent interference between the slider 3 and the fastener 4, which would prevent the fastener 4 from rotating fully. This ensures that the locking and unlocking functions of the bellows 5 can be performed normally, and reduces wear on the fastener 4 and the slider 3, extending their service life. In this embodiment, the limiting groove 32 is connected to the clearance opening 33.

[0031] Example 3 This embodiment is the third embodiment of the corrugated pipe joint of this utility model. This embodiment is similar to embodiment two, except that, as Figures 3 to 5 As shown, the outer wall of the socket 2 is provided with a sliding groove 23, and the inner side wall of the slide piece 3 is provided with a sliding buckle 34, which is slidably installed in the sliding groove 23. When the slide piece 3 is pushed axially, the sliding buckle 34 slides along the sliding groove 23, causing the slide piece 3 to slide along the sliding groove 23.

[0032] like Figure 4 , Figure 5 and Figure 7 As shown, a damping structure is provided between the sliding buckle 34 and the sliding groove 23 to increase the sliding resistance of the sliding piece 3. The damping structure increases the amount of external force required for the sliding piece 3 to slide, preventing the sliding piece 3 from accidentally sliding and causing the buckle 41 of the buckle 4 to unlock, ensuring that the buckle 41 is always in the buckled state when no disassembly or assembly work is performed, and improving the reliability of the bellows 5 installation.

[0033] like Figure 4 and Figure 5 As shown, both the sliding groove 23 and the sliding buckle 34 are provided in two sets, and the two sets of sliding grooves 23 are symmetrically distributed along the circumferential direction of the socket 2; as Figure 7As shown, the damping structure includes a plurality of first guide teeth 341 and a plurality of second guide teeth 231 that cooperate with the first guide teeth 341. The first guide teeth 341 are disposed on the slide buckle 34, and the second guide teeth 231 are disposed on the side wall of the slide groove 23. The first guide teeth 341 are engaged between two adjacent second guide teeth 231. The distance between the side wall of the slide buckle 34 away from the first guide teeth 341 and the side wall of the slide groove 23 away from the second guide teeth 231 is greater than or equal to the tooth height of the first guide teeth 341. The first guide tooth 341 of the sliding buckle 34 engages with the second guide tooth 231 of the sliding groove 23. The elasticity of the sliding piece 3 causes the two sets of sliding buckles 34 to contract inward, increasing the pressure between the sliding buckle 34 and the sliding groove 23, and increasing the friction between the first guide tooth 341 and the second guide tooth 231. When the sliding piece 3 is slidable, an external force is applied to the sliding piece 3 to overcome the friction between the first guide tooth 341 and the second guide tooth 231, causing the first guide tooth 341 to gradually pass over the second guide tooth 231, disengage, and allow the sliding buckle 34 to continue sliding. The engaging engagement of the guide tooth 231 increases the external force required for the slide plate 3 to slide, preventing accidental sliding. When the sliding buckle 34 passes the second guide tooth 231, the slide plate 3 expands outward, and the sliding buckle 34 moves towards the side of the slide groove 23 away from the second guide tooth 231. The maximum distance of movement is the tooth height of the first guide tooth 341. The distance between the sliding buckle 34 and the side wall of the slide groove 23 is greater than or equal to the tooth height of the first guide tooth 341, ensuring that the first guide tooth 341 and the second guide tooth 231 have sufficient space to offset each other, disengage, and ensure normal sliding of the slide plate 3. In this embodiment, there are two sliding buckles 34 and two slide grooves 23.

[0034] The working principle of the corrugated pipe joint in this embodiment is as follows: When installing the slide plate 3, the sliding buckle 34 located on one side of the slide plate 3 is inserted into the sliding groove 23 located on one side of the socket 2. An external force is applied to the slide plate 3 to cause the slide plate 3 to expand and deform outward. The sliding buckle 34 located on the other side of the slide plate 3 is inserted into the sliding groove 23 located on the other side of the socket 2. The external force applied to the slide plate 3 is removed. The elastic force of the slide plate 3 contracting inward drives the two sliding buckles 34 to respectively lock the two sliding grooves 23, thus completing the installation of the slide plate 3.

[0035] When sliding the slide plate 3, an external force is applied to the slide plate 3 to overcome the friction between the first guide tooth 341 and the second guide tooth 231, so that the first guide tooth 341 gradually passes over the second guide tooth 231 that is in contact with it and disengages. The slide plate 3 continues to slide, so that the distance between the first guide tooth 341 and the side wall of the slide groove 23 where the second guide tooth 231 is located increases and then decreases. The slide plate 3 first expands outward and then contracts inward. The second guide tooth 231 is engaged between two other adjacent second guide teeth 231 or completely disengages from the second guide tooth 231 and directly abuts against the side wall of the slide groove 23. The friction between the first guide tooth 341 and the second guide tooth 231 provides sufficient damping so that the slide plate 3 will not slide due to accidental contact or other unexpected factors when the bellows 5 does not need to be disassembled, thus preventing accidental unlocking.

[0036] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bellows joint, characterized in that, The connector includes a main body (1), a sliding plate (3), and a flexible fastener (4). The main body (1) has sockets (2) at both ends for installing a corrugated pipe (5). The sidewall of the socket (2) has a mounting groove (21). The sliding plate (3) is slidably connected to the outer wall of the socket (2) along the axial direction of the socket (2). The fastener (4) is rotatably connected to the sidewall of the mounting groove (21). The axis of rotation of the fastener (4) is parallel to the sidewall of the socket (5). The axis of the opening (2) is perpendicular. One end of the fastener (4) is bent inward to form a fastening position (41) for engaging with the trough of the outer surface of the corrugated pipe (5). The other end of the fastener (4) is bent outward to form a second limiting part (42). The inner side of the sliding piece (3) is provided with a first limiting part (31). The first limiting part (31) is used to push the second limiting part (42) to move inward when the sliding piece (3) slides away from the connector body (1).

2. The corrugated pipe joint according to claim 1, characterized in that, The bending angle of the second limiting part (42) is smaller than the bending angle of the buckle (41).

3. The corrugated pipe joint according to claim 1, characterized in that, The first limiting part (31) includes a first limiting rib (311), which is disposed on the inner side of the slide (3). The first limiting rib (311) has a guide surface for pushing the second limiting part (42) on the side away from the connector body (1). The guide surface is inclined outward in a direction away from the connector body (1). When the slide (3) slides in a direction away from the connector body (1), the guide surface pushes the outer side of the second limiting part (42). The inclination direction of the outer side of the second limiting part (42) is the same as that of the guide surface.

4. The bellows joint according to claim 3, characterized in that, The first limiting part (31) further includes a second limiting rib (312) for blocking the second limiting part (42) from moving in the direction of the axis of the socket (2). The second limiting rib (312) is disposed on the inner side of the slide (3). The side of the second limiting rib (312) near the joint body (1) is provided with a limiting surface that cooperates with the inner side of the second limiting part (42).

5. The corrugated pipe joint according to claim 3, characterized in that, The inner wall of the slide (3) is an arc-shaped surface that matches the outer wall of the socket (2). The inner wall of the slide (3) is provided with a limiting groove (32), and the first limiting rib (311) is located at the bottom of the limiting groove (32).

6. The corrugated pipe joint according to claim 1, characterized in that, The side wall of the slide (3) is provided with a clearance opening (33) for providing rotation space for the fastener (4).

7. The corrugated pipe joint according to claim 1, characterized in that, The outer wall of the socket (2) is provided with a sliding groove (23), and the inner side wall of the slide piece (3) is provided with a sliding buckle (34), which is slidably installed in the sliding groove (23).

8. The corrugated pipe joint according to claim 7, characterized in that, A damping structure is provided between the sliding buckle (34) and the sliding groove (23) to increase the sliding resistance of the sliding piece (3).

9. The corrugated pipe joint according to claim 8, characterized in that, Both the slide groove (23) and the sliding buckle (34) are provided in two sets. The two sets of slide grooves (23) are symmetrically distributed along the circumferential direction of the socket (2). The damping structure includes a number of first guide teeth (341) and a number of second guide teeth (231) that cooperate with the first guide teeth (341). The first guide teeth (341) are disposed on the sliding buckle (34), and the second guide teeth (231) are disposed on the side wall of the slide groove (23). The first guide teeth (341) are engaged between two adjacent second guide teeth (231). The distance between the side wall of the sliding buckle (34) away from the first guide teeth (341) and the side wall of the slide groove (23) away from the second guide teeth (231) is greater than or equal to the tooth height of the first guide teeth (341).

10. The bellows joint according to any one of claims 1 to 9, characterized in that, Both the sliding piece (3) and the fastener (4) are made of plastic.

Images