A bellows joint

Abstract

The present invention discloses a bellows joint, comprising a main body and a buckle; the main body is tubular and has an opening on the circumference; the buckle is connected to the main body by sliding or rotation; a locking piece is provided between the buckle and the main body to fix the two when the buckle is embedded in the opening; the inner wall of the buckle is provided with a positioning part for being inserted into the fold of the bellows. Compared with the prior art, the bellows joint allows the main body and the buckle to be connected by sliding or rotation, and based on the sliding or rotating connection relationship between the buckle and the main body, the buckle can only be embedded in the opening at a specific angle. Therefore, when positioning and installing the bellows, the main body and the buckle connected to each other will not accidentally fall off and separate due to the negligence of the operator, which can improve the operation speed; it can also ensure that the operator realizes the positioning connection of the buckle and the opening in the correct orientation relationship, improve the accuracy and efficiency of the operation, and realize the rapid and accurate positioning and installation of the bellows.

Description

Technical Field

[0001] The invention relates to the field of corrugated pipes, and in particular to a corrugated pipe joint. Background Art

[0002] The bellows joint is a tooling used for positioning and connecting bellows.

[0003] The bellows joint may include three main structures: a main body, a buckle and a waterproof ring. The main body and the buckle are assembled into a tubular structure for inserting and positioning the bellows. The waterproof ring is arranged between the outer wall of the bellows and the inner wall of the aforementioned tubular structure to provide waterproofing for the bellows. The bellows joints currently on the market usually have the following problems during use:

[0004] (1) Because it is inconvenient to assemble the buckle with the main body and the buckle is small in size, it is very easy to cause the buckle to fall off when assembling the corrugated pipe joint, affecting the assembly efficiency.

[0005] (ii) Since the buckle has a positive and a negative position during assembly, the operator may easily install the buckle into the main body in reverse, causing assembly errors, which also affects assembly efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a bellows joint, which can improve the use of the bellows joint and enhance the operating efficiency and accuracy.

[0007] To achieve the above-mentioned purpose, the present invention provides a bellows joint, comprising a main body and a buckle; the main body is tubular and has an opening on the circumferential side; the buckle is slidably or rotatably connected to the main body; a locking member is provided between the buckle and the main body for fixing the two when the buckle is embedded in the opening; the inner wall of the buckle is provided with a positioning portion for clamping into the fold of the bellows.

[0008] Preferably, the buckle is in the shape of a fan ring; one end of the buckle along the arc length direction is rotatably connected to the main body through a pin; and the pin is parallel to the central axis of the main body.

[0009] Preferably, the locking member includes a first locking member and a second locking member for interlocking with each other; the first locking member is an insertion port provided on the main body and adjacent to the opening; the second locking member is a fastener provided at the other end of the buckle along the arc length direction and used for being inserted into the insertion port.

[0010] Preferably, a first side wall of the plug port is provided with a release groove; an outer wall of the fastener is provided with a release rib protruding radially outwardly toward the main body, for locking when the buckle is embedded in the opening and partially blocking the release groove.

[0011] Preferably, a locking surface is provided on the second side wall of the plug port; and a locking strip is provided at the end of the fastener for pressing the locking surface when the release rib is locked in the release groove.

[0012] Preferably, the locking strip comprises a first locking strip and a second locking strip which are spaced apart and respectively pressed on two edges of the locking surface.

[0013] Preferably, the locking surface is specifically an inclined surface inclined toward the radial outer side of the main body; the first locking strip and the second locking strip protrude from the inner side and the middle part of the end surface of the fastener respectively; the top end of the first locking strip and the top end of the second locking strip are distributed at an angle inclined toward the radial inner side of the main body.

[0014] Preferably, it also includes a waterproof ring sleeved inside the main body; a positioning connector is provided between the waterproof ring and the main body to achieve a positioning connection between the two.

[0015] Preferably, the positioning connector comprises a first undercut and a first undercut groove respectively provided on the main body and the waterproof ring, and / or a positioning column and a positioning hole respectively provided on the main body and the waterproof ring;

[0016] The first undercut groove is an annular groove provided at the outer periphery of the end of the main body and the notch faces radially outward; the first undercut is an annular flange provided at the end of the waterproof ring and rolled toward the radially outward; the curling angle of the annular flange is greater than 180°;

[0017] The positioning column and the positioning hole extend along the axial direction of the main body and the axial direction of the waterproof ring respectively.

[0018] Preferably, the annular flange is wrapped around the outer periphery of the end of the main body; and the outer wall of the waterproof ring is provided with radially outwardly protruding lines.

[0019] Compared with the above background technology, the bellows joint provided by the present invention includes a main body and a buckle; the buckle is connected to the main body in a sliding or rotational manner.

[0020] The main body is tubular and has an opening on the circumference, so the buckle can be embedded in and out of the opening when sliding or rotating relative to the main body. In the bellows joint, a locking piece is provided between the buckle and the main body to fix the buckle when the buckle is embedded in the opening.

[0021] Therefore, when the buckle is embedded in the opening, the buckle uses the positioning part of its inner wall to clamp the folds of the bellows in the main body, thereby positioning the aforementioned bellows; when the buckle is disengaged from the opening, the positioning part is separated from the bellows, and the bellows can be detached from the bellows joint.

[0022] It can be seen that the bellows joint provided by the present invention utilizes the sliding or rotating connection relationship between the main body and the buckle, so that the main body and the buckle are always connected, and the buckle is inserted into the opening at a specific angle and fixed in the opening. When the operator uses the bellows joint to position and install the bellows, the buckle connected to the main body can slide or flip into the opening quickly and accurately, and will not accidentally fall due to the negligence of the operator, which is conducive to improving the operating efficiency and realizing the rapid and accurate positioning and installation of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a bellows joint provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a waterproof ring provided in an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of a waterproof ring provided by an embodiment of the present invention in a first direction;

[0027] Figure 4 A cross-sectional view of the waterproof ring provided by an embodiment of the present invention in a second direction;

[0028] Figure 5 for Figure 4 A top view of

[0029] Figure 6 A schematic diagram of the structure of a buckle provided by an embodiment of the present invention in a first direction;

[0030] Figure 7 A schematic diagram of the structure of the buckle provided by an embodiment of the present invention in the second direction;

[0031] Figure 8 A schematic diagram of the structure of the main body provided by an embodiment of the present invention in a first direction;

[0032] Fig. 9 A schematic diagram of the structure of the main body provided by an embodiment of the present invention in a second direction;

[0033] Fig.10 A cross-sectional view of a main body provided by an embodiment of the present invention;

[0034] Fig.11This is a schematic diagram of assembling the main body and buckle provided in an embodiment of the present invention.

[0035] Among them, 01- bellows, 1- main body, 11- open mouth, 12- threaded part, 2- buckle, 4- plug interface, 41- release groove, 42- locking surface, 5- fastener, 51- release rib, 52- locking strip, 521- first locking strip, 522- second locking strip, 53- bellows positioning rib, 54- pin shaft mounting hole, 55- anti-slip pattern, 6- first inverted buckle, 7- first inverted buckle groove, 8- positioning column, 9- positioning hole, 10- waterproof ring, 101- pattern, 102- buckle mounting hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Please refer to Figures 1 to 11 , Figure 1 A schematic diagram of the structure of a bellows joint provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a waterproof ring provided in an embodiment of the present invention; Figure 3 A cross-sectional view of a waterproof ring provided by an embodiment of the present invention in a first direction; Figure 4 A cross-sectional view of the waterproof ring provided by an embodiment of the present invention in a second direction; Figure 5 for Figure 4 A top view of Figure 6 A schematic diagram of the structure of a buckle provided by an embodiment of the present invention in a first direction; Figure 7 A schematic diagram of the structure of the buckle provided by an embodiment of the present invention in the second direction; Figure 8 A schematic diagram of the structure of the main body provided by an embodiment of the present invention in a first direction; Fig. 9 A schematic diagram of the structure of the main body provided by an embodiment of the present invention in a second direction; Fig.10 A cross-sectional view of a main body provided by an embodiment of the present invention; Fig.11 This is a schematic diagram of assembling the main body and buckle provided in an embodiment of the present invention.

[0039] The present invention provides a corrugated pipe joint, comprising a main body 1 and a buckle 2 connected to the main body 1; the main body 1 is tubular and has an opening 11 on the circumferential side, the buckle 2 is slidably connected or rotatably connected to the main body 1, and when the buckle 2 is embedded in the opening 11 of the main body 1, the buckle 2 and the main body 1 are fixedly connected by a locking piece arranged between the two.

[0040] Take the sliding connection between the buckle 2 and the main body 1 as an example. When the bellows 01 has not yet been inserted into the main body 1 of the bellows joint, the buckle 2 is slid radially outward along the main body 1 until the distance between the inner wall of the buckle 2 and the central axis of the main body 1 is greater than the radius of the main body 1, so that the bellows 01 can be smoothly inserted into the main body 1. After the bellows 01 is inserted into the main body 1, the buckle 2 is slid radially inward along the main body 1 until the distance between the inner wall of the buckle 2 and the central axis of the main body 1 is less than the radius of the main body 1, and the positioning part of the inner wall of the buckle 2 is stuck in the fold of the bellows 01; at this time, the buckle 2 and the main body 1 are fixedly connected by a locking member to achieve the fixation of the two to the bellows 01.

[0041] It can be seen that when the bellows joint is used to realize the positioning and clamping of the bellows 01, the bellows 01 is inserted into the main body 1 before the buckle 2 is embedded in the opening 11 of the main body 1. Once the buckle 2 is embedded in the opening 11 of the main body 1 by sliding or rotating, the inner wall of the buckle 2 is closely attached to the bellows 01 in the main body 1, and the positioning part of the buckle 2 is clamped in the fold of the bellows 01, so that the bellows 01 is fixed in the main body 1.

[0042] The positioning part can be specifically set as a bellows positioning rib 53. Based on the shape structure of the buckle 2 and the main body 1, the bellows positioning rib 53 can be set as a semi-annular shape for embedding into the folds of the bellows 01. As for the number of positioning parts, it includes but is not limited to a single or multiple. For example, the inner wall of the buckle 2 is provided with a plurality of bellows positioning ribs 53 distributed side by side along the axial direction of the main body 1, which are used to be respectively inserted into the multiple folds of the bellows 01 to achieve simultaneous locking of the bellows 01.

[0043] As for the main body 1 and the buckle 2, one main body 1 can be connected to one buckle 2, or one main body 1 can be connected to multiple buckles 2 according to the positioning requirements of the corrugated tube 01. Different buckles 2 connected to the main body 1 can be pre-assembled to the main body 1 using the same connection relationship, or they can be pre-assembled to the main body 1 using different connection relationships.

[0044] Regarding the main body 1 used in the present invention, in addition to the opening 11, the main body 1 may also include a threaded portion 12 with a threaded outer wall. Figure 1 and Figure 8As shown, the threaded portion 12 and the opening 11 are respectively arranged at the axial ends of the main body 1, for example, the opening 11 is located at the axial upper end of the main body 1, and the threaded portion 12 is located at the axial lower end of the main body. The external thread of the threaded portion 12 can be processed by an inlaid metal injection molding process. For the threaded portion 12, an O-ring or a gasket can also be sleeved on the outer periphery of the threaded portion 12.

[0045] The bellows joint provided by the present invention allows the main body 1 and the buckle 2 to form an assembled integrated structure. Regardless of whether the bellows 01 is installed on the bellows joint, the main body 1 and the buckle 2 always remain connected, and based on the sliding or rotating connection relationship between the buckle 2 and the main body 1, the buckle 2 enters and is fixed in the opening 11 at a specific angle when embedded in the opening 11. Therefore, compared with the prior art, when the bellows joint is used to position and install the bellows 01, the main body 1 and the buckle 2 connected to each other will not accidentally fall off due to the negligence of the operator, which facilitates the operator to quickly embed the buckle 2 into the opening 11 of the main body 1, thereby improving the operating speed; the buckle 2 is embedded in the opening 11 of the main body 1 with a specific movement relationship and a specific movement direction, ensuring that the operator can achieve the connection between the buckle 2 and the main body 1 with the correct orientation relationship, thereby improving the accuracy and efficiency of the operation.

[0046] In summary, the bellows joint provided by the present invention is provided with an opening 11 on the side of the main body 1, and the buckle 2 connected to the main body 1 is slid into or flipped into the opening 11, so that the positioning part of the inner wall of the buckle 2 is used to clamp the bellows 01 inserted into the main body 1, thereby realizing fast and accurate positioning and installation of the bellows 01.

[0047] The bellows joint provided by the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0048] With respect to the specific connection between the buckle 2 and the main body 1 , a specific implementation method is provided below.

[0049] In the bellows joint, the buckle 2 is in the shape of a fan ring; one end of the buckle 2 along the arc length direction is provided with a pin shaft mounting hole 54, and the buckle 2 is rotatably connected to the main body 1 by means of a pin shaft inserted into the aforementioned pin shaft mounting hole 54, so as to realize the connection between the buckle 2 and the main body 1, so that the buckle 2 is not easy to fall off during the assembly and disassembly of the bellows joint, and the on-site operation is convenient. Figure 1 and Fig.11 Since the pin is parallel to the central axis of the main body 1, the buckle 2 is Figure 1 The main body 1 is separated from and inserted into the opening 11 of the main body 1 in a manner of being turned inside out toward the paper surface.

[0050] The buckle 2 can be of a size comparable to the opening 11 of the main body 1 , and is used to close the main body 1 when inserted into the opening 11 , so that the main body 1 becomes a tube body with closed circumferential sides.

[0051] The other end of the buckle 2 along the arc length direction, that is, the end away from the pin shaft, can achieve relative fixation between the buckle 2 and the opening 11 by means of interference fit, fixed connection with a locking piece, etc.

[0052] In order to improve the fixed connection strength between the buckle 2 and the opening 11, the locking member may include a first locking member and a second locking member for interlocking, that is, when the buckle 2 is embedded in the opening 11, the main body 1 and the buckle 2 are fixedly connected by the mutual engagement of the first locking member and the second locking member.

[0053] Among them, the first locking member is an insertion port 4 provided on the main body 1, and the insertion port 4 is adjacent to the opening 11; the second locking member is a fastener 5 provided on the buckle 2, and the fastener 5 is provided at the other end of the buckle 2 along the arc length direction, and is used to be inserted into the insertion port 4 adjacent to the opening 11 when the buckle 2 is flipped into the opening 11.

[0054] For the above-mentioned plug interface 4 and fastener 5, in order to take into account both the fixed connection strength and the convenience of disassembly, reference can be made to Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.11 The first side wall of the plug port 4 is provided with a release groove 41, which is recessed inward from the surface of the first side wall to form a groove-shaped structure; the outer wall of the fastener 5 is provided with a release rib 51 protruding toward the radial outer side of the main body 1, and the release rib 51 is clamped on the first side wall where the release groove 41 is located when the buckle 2 is embedded in the opening 11, and partially covers the release groove 41.

[0055] For reference Fig.11 When the release rib 51 is locked and partially blocks the release groove 41, on the one hand, the release rib 51 and the contact surface of the first side wall where the release groove 41 is located are pressed against each other, playing the role of locking the fastener 5 and the plug-in interface 4; on the other hand, the release rib 51 and the release groove 41 form a semi-open groove structure for tools such as screwdrivers to be inserted and pried. During operation, the screwdriver can be automatically Fig.11 Insert from the lower left corner to the upper right corner Fig.11 41 in the middle release slot, and turn the screwdriver counterclockwise to make the screwdriver head Fig.11 The left side of the fastener 5 is used to pull the release rib 51, thereby separating the fastener 5 and the plug interface 4.

[0056] Furthermore, a locking surface 42 is provided on the second side wall of the plug port 4, and a locking strip 52 is provided at the end of the fastener 5 for pressing the locking surface 42. After the fastener 5 is inserted into the plug port 4, the locking and fixing is achieved by the mutual pressing of the release groove 41 and the release rib 51, and the locking and fixing is achieved by the mutual pressing of the locking strip 52 and the locking surface 42.

[0057] Based on the relative position of the fastener 5 and the plug-in port 4, the locking surface 42 is located on the opposite side of the release groove 41, that is, the first side wall and the second side wall of the plug-in port 4 are relatively distributed. Therefore, the mutual engagement of the plug-in port 4 and the fastener 5 can be understood as that after the fastener 5 is inserted into the plug-in port 4, the two ends of the fastener 5 are respectively squeezed between the two opposite side walls of the plug-in port 4. When the plug-in port 4 and the fastener 5 are separated, the fastener 5 is deflected in the plug-in port 4 by using a tool inserted between the release groove 41 and the release rib 51, so that the fastener 5 is separated from the plug-in port 4 at an inclined angle.

[0058] The locking strip 52 used in this embodiment may specifically include a first locking strip 521 and a second locking strip 522 that are spaced apart. When the fastener 5 is fixed in the plug port 4, the first locking strip 521 and the second locking strip 522 are respectively pressed against the two edges of the locking surface 42. In short, the locking surface 42 is in the shape of a plane, and the top ends of the first locking strip 521 and the second locking strip 522 are in the shape of narrow strips; the locking surface 42 and the locking strip 52 both increase the contact stress between the two by reducing the contact surface area, thereby preventing vibration from loosening.

[0059] like Fig.11 As shown, the top of the first locking strip 521 and the top of the second locking strip 522 can be set as an arc surface. On the one hand, the locking surface 42 is respectively in surface-line contact with the first locking strip 521 and the second locking strip 522, thereby increasing the contact stress and thereby increasing the fixed connection strength between the fastener 5 and the plug interface 4; on the other hand, when the fastener 5 is detached from the plug interface 4, the arc surface can rotate relative to the locking surface 42, thereby simplifying the disassembly and assembly of the fastener 5 and the plug interface 4.

[0060] Furthermore, the locking surface 42 is specifically an inclined surface inclined toward the radial outer side of the main body 1; the first locking strip 521 and the second locking strip 522 respectively protrude from the inner side and the middle part of the end surface of the fastener 5, and in accordance with the aforementioned locking surface 42, the top end of the first locking strip 521 and the top end of the second locking strip 522 are distributed at an angle inclined toward the radial inner side of the main body 1.

[0061] Still Fig.11 For example, the locking surface 42 is provided on the main body 1 and is an inclined surface, so the thickness of the part of the main body 1 where the locking surface 42 is located changes gradually, for example, Fig.11 In the embodiment, the thickness of the part of the main body 1 where the locking surface 42 is located is Fig.11 Based on this structure, when the fastener 5 inserted into the plug-in port 4 rotates counterclockwise and exits the plug-in port 4, the portion of the main body 1 where the locking surface 42 is located rebounds radially inwardly of the main body 1, so that the size of the plug-in port 4 is temporarily expanded, making it easier for the fastener 5 to exit from the plug-in port 4.

[0062] In addition, since the first locking strip 521 and the second locking strip 522 protrude from the inner side and the middle of the end face of the fastener 5 respectively, and the top of the first locking strip 521 and the top of the second locking strip 522 are used to squeeze the two edges of the locking surface 42 respectively, when the second locking strip 522 protruding from the inner side of the end face of the fastener 5 squeezes the inner edge of the locking surface 42, the first locking strip 521 protruding from the middle of the end face of the fastener 5 squeezes the outer edge of the locking surface 42. Based on the above structure, a gap is left between the outer side of the end face of the fastener 5 and the plug-in port 4. This gap can leave enough rotation space for the first locking strip 521 when the fastener 5 deflects and exits the plug-in port 4, so that the first locking strip 521 can be conveniently rotated according to the Fig.11 The plug-in port 4 is withdrawn after counterclockwise rotation as shown. The inside and outside mentioned above are all based on the radial inside and outside of the main body 1 as the orientation reference.

[0063] In addition, anti-slip grooves 55 are provided on the outer side of the buckle 2. The anti-slip grooves 55 are arranged adjacent to the fastener 5. When the operator uses a screwdriver to turn the fastener 5 in the plug-in port 4, it is convenient for the operator's fingers to apply force to the buckle 2 at the anti-slip grooves 55, thereby quickly separating the buckle 2 and the main body 1.

[0064] The bellows joint provided by the present invention may further include a waterproof ring 10 located in the main body 1 and sleeved with the main body 1. In the bellows joint, a positioning connector is provided between the waterproof ring 10 and the main body 1 to achieve positioning connection between the two.

[0065] The waterproof ring 10 and the bellows 01 are designed and assembled according to the waterproof standards of IP67 and IP68.

[0066] In order to meet the connection between the main body 1 and the buckle 2, the waterproof ring 10 is provided with a buckle installation hole 102 on the circumference thereof to align with the opening 11. When the main body 1 and the buckle 2 are installed, the buckle installation hole 102 is aligned with the opening 11, and the buckle 2 is embedded in the opening 11 and the buckle installation hole 102 at the same time, so that the bellows positioning rib 53 is in contact with the bellows 01.

[0067] Among them, the positioning connecting part may include a first undercut 6 and a first undercut groove 7 respectively provided on the main body 1 and the waterproof ring 10, or include a positioning column 8 and a positioning hole 9 respectively provided on the main body 1 and the waterproof ring 10, or include both the above-mentioned first undercut 6 and the first undercut groove 7, and also include the above-mentioned positioning column 8 and positioning hole 9.

[0068] When the first undercut 6 and the first undercut groove 7 are provided between the main body 1 and the waterproof ring 10, the first undercut 6 can be provided on the waterproof ring 10 and the first undercut groove 7 is provided on the main body 1. The first undercut groove 7 is specifically an annular groove provided on the outer periphery of the end of the main body 1, and the notch of the annular groove faces the radial outer side of the main body 1, such as Figure 8 , Fig. 9 and Fig.10The first undercut 6 is specifically an annular flange provided at the end of the waterproof ring 10, and the annular flange is rolled toward the radial outside of the waterproof ring 10, and the curling angle is greater than 180, as shown in FIG. Figure 2 , Figure 3 and Figure 4 As shown, the curling angle of the annular flange can be set to 270°.

[0069] When the first inverted buckle 6 is connected to the first inverted buckle groove 7, the main body 1 and the waterproof ring 10 are axially positioned, and because the first inverted buckle 6 is rolled up and tightly fixed to the first inverted buckle groove 7, when the bellows 01 installed in the bellows joint is pulled or disassembled, the waterproof ring 10 will not be separated from the main body 1 due to the axial tensile stress applied by the bellows 01, and will not affect the positioning effect of the bellows joint on the bellows 01 or the disassembly operation of the bellows 01.

[0070] When the positioning column 8 and the positioning hole 9 are provided between the main body 1 and the waterproof ring 10, the positioning column 8 can be provided on the main body 1 or the waterproof ring 10; similarly, the positioning hole 9 can be provided on the main body 1 or the waterproof ring 10. Of course, considering the materials and processing methods of the main body 1 and the waterproof ring 10, it is preferred that the positioning column 8 is provided on the main body 1 and the positioning hole 9 is provided on the waterproof ring 10.

[0071] The positioning column 8 and the positioning hole 9 extend along the axial direction of the main body 1 and the axial direction of the waterproof ring 10 respectively. After the positioning column 8 and the positioning hole 9 cooperate with each other, the main body 1 and the waterproof ring 10 are radially limited to prevent the waterproof ring 10 from radially rotating and shifting in the main body 1. It should be noted that, because the main body 1 and the waterproof ring 10 are sleeved with each other, the axial direction of the main body 1 is also the axial direction of the waterproof ring 10, and the radial direction of the main body 1 is also the radial direction of the waterproof ring 10.

[0072] like Figure 2 , Figure 8 , Fig. 9 and Fig.10 As shown, two positioning posts 8 can be provided at the top of the main body 1, and the two positioning posts 8 are respectively located on both sides of the top surface of the main body 1; accordingly, two positioning holes 9 are provided at the end of the waterproof ring 10, which are used to respectively sleeve the two positioning posts 8. When the bellows 01 installed in the bellows joint is subjected to radial twisting by external force, the mutual cooperation of the positioning posts 8 and the positioning holes 9 can prevent the waterproof ring 10 from shifting, thereby avoiding affecting the positioning effect of the bellows joint on the bellows 01.

[0073] In order to further enhance the function of the waterproof ring 10 in the bellows joint, when the waterproof ring 10 is assembled on the main body 1, the annular flange of the waterproof ring 10 is wrapped around the outer periphery of the end of the main body 1. Compared with the waterproof ring in the prior art that only has a waterproof function, the waterproof ring 10 used in the present invention not only realizes a fixed connection with the main body 1 through the annular flange and the positioning hole 9 provided on the annular flange, but also based on the setting of the annular flange, when the bellows 01 is inserted into the bellows joint, the bellows 01 will not drive the end of the waterproof ring 10 to roll and wrinkle into the main body 1, simplifying the installation of the bellows 01. At the same time, the end of the main body 1 and the annular flange wrapped around the end of the main body 1 can also fully contact and effectively fix the bellows 01.

[0074] In addition, the outer wall of the waterproof ring 10 is also provided with radially outwardly protruding lines 101. The lines 101 can increase the friction between the outer wall of the waterproof ring 10 and the inner wall of the main body 1, improve the positioning and connection strength of the waterproof ring 10 in the main body 1, and ensure that the waterproof ring 10 and the main body 1 are tightly matched and not loose.

[0075] In summary, the bellows joint provided by the present invention allows the buckle 2 and the main body 1 to be connected by sliding or rotating, which is convenient for the buckle 2 and the main body 1 to be fixedly connected at a specific relative angle when positioning the bellows 01, and also convenient for the buckle 2 and the main body 1 to be separated and kept connected when the bellows 01 is detached, thereby avoiding the storage or reuse of the bellows joint due to the accidental separation of the buckle 2 from the main body 1, thereby simplifying the use of the bellows joint. The bellows joint also uses the positioning connector between the waterproof ring 10 and the main body 1 to improve the connection effect of the waterproof ring 10 and the main body 1, avoiding the phenomenon of wrinkling, displacement or separation of the waterproof ring 10 due to the installation or use of the bellows 01, and improving the waterproof effect and positioning effect of the waterproof ring 10 on the bellows 01.

[0076] The bellows joint provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A corrugated pipe joint, characterized in that: The invention comprises a main body (1) and a buckle (2); the main body (1) is tubular and has an opening (11) on the circumference; the buckle (2) is connected to the main body (1) by sliding or rotating; a locking piece is provided between the buckle (2) and the main body (1) for fixing the two when the buckle (2) is embedded in the opening (11); the inner wall of the buckle (2) is provided with a positioning part for locking into the fold of the corrugated tube (01); The buckle (2) is in the shape of a fan ring; one end of the buckle (2) along the arc length direction is rotatably connected to the main body (1) via a pin; the pin is parallel to the central axis of the main body (1); The locking member comprises a first locking member and a second locking member for interlocking; the first locking member is an insertion port (4) provided on the main body (1) and adjacent to the opening (11); the second locking member is a buckle (5) provided at the other end of the buckle (2) along the arc length direction and for being inserted into the insertion port (4); The first side wall of the plug interface (4) is provided with a release groove (41); the outer wall of the fastener (5) is provided with a release rib (51) protruding toward the radial outer side of the main body (1) and used for locking and partially covering the release groove (41) when the buckle (2) is embedded in the opening (11); the release rib (51) and the contact surface of the first side wall where the release groove (41) is located are pressed against each other to lock the fastener (5) and the plug interface (4); and the release rib (51) and the release groove (41) form a semi-open groove structure that can be inserted and pried by a tool. When the plug interface (4) and the fastener (5) are separated, the fastener (5) is deflected in the plug interface (4) by using a tool inserted between the release groove (41) and the release rib (51), so that the fastener (5) is separated from the plug interface (4) at an inclined angle; A locking surface (42) is provided on the second side wall of the plug port (4); a locking strip (52) is provided at the end of the buckle (5) for pressing the locking surface (42) when the release rib (51) is locked in the release groove (41); The locking strip (52) comprises a first locking strip (521) and a second locking strip (522) which are spaced apart and respectively pressed on two edges of the locking surface (42); the locking surface (42) is planar; the top ends of the first locking strip (521) and the second locking strip (522) are narrow strips; and the top ends of the first locking strip (521) and the second locking strip (522) are arranged as arc surfaces, so that the locking surface (42) is in surface-line contact with the first locking strip (521) and the second locking strip (522) respectively. The locking surface (42) is specifically an inclined surface inclined toward the radial outer side of the main body (1); the first locking strip (521) and the second locking strip (522) protrude from the inner side and the middle part of the end surface of the buckle (5) respectively; the top end of the first locking strip (521) and the top end of the second locking strip (522) are distributed at an angle inclined toward the radial inner side of the main body (1); The thickness of the portion of the main body (1) where the locking surface (42) is located gradually decreases, and when the fastener (5) inserted into the plug interface (4) rotates counterclockwise and exits the plug interface (4), the portion of the main body (1) where the locking surface (42) is located rebounds radially inwardly of the main body (1), thereby expanding the size of the plug interface (4) and facilitating the fastener (5) to exit from the plug interface (4); A gap is left between the outer side of the end surface of the fastener (5) and the plug-in interface (4), and the gap is used to leave a rotation space for the first locking strip (521) when the fastener (5) is deflected and exits the plug-in interface (4), so as to facilitate the first locking strip (521) to exit the plug-in interface (4) after rotation.

2. The corrugated pipe joint according to claim 1, characterized in that: It also comprises a waterproof ring (10) sleeved inside the main body (1); a positioning connector is provided between the waterproof ring (10) and the main body (1) to achieve positioning connection between the two.

3. The corrugated pipe joint according to claim 2, characterized in that: The positioning connector comprises a first undercut (6) and a first undercut groove (7) respectively arranged on the main body (1) and the waterproof ring (10), and / or a positioning column (8) and a positioning hole (9) respectively arranged on the main body (1) and the waterproof ring (10); The first undercut groove (7) is an annular groove provided at the outer periphery of the end of the main body (1) and with the notch facing radially outward; the first undercut (6) is an annular flange provided at the end of the waterproof ring (10) and rolled up radially outward; the curling angle of the annular flange is greater than 180°; The positioning column (8) and the positioning hole (9) extend along the axial direction of the main body (1) and the axial direction of the waterproof ring (10) respectively.

4. The corrugated pipe joint according to claim 3, characterized in that: The annular flange is wrapped around the outer periphery of the end of the main body (1); and the outer wall of the waterproof ring (10) is provided with radially outwardly protruding lines (101).

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