Anti-skid edge type anti-loosening pipe joint

Abstract

The invention relates to the technical field of post-treatment of plastic pipe joints, and particularly discloses an anti-skid ridge type anti-loosening pipe joint which comprises a joint main body, and a plurality of first anti-skid ridges distributed in an array mode are arranged on the joint main body in the circumferential direction of the maximum outer diameter; a plurality of second anti-skid ridges which are distributed in an array mode are arranged on the outer diameter of the sleeve in the circumferential direction; the limiting structure is used for preventing the sleeve from rotating relative to the joint main body; and entering a bead joint. After the sleeve and the connector body are screwed down, the proper fastening degree of the sleeve is directly judged by observing whether the first anti-skid edges and the second anti-skid edges are aligned or not and whether the sleeve is attached to the end face of the connector body or not, the abrasion or corrosion condition of the pipe connector is found in time, replacement is conducted, and loss is reduced; the limiting structure penetrates into the trapezoidal grooves of the connector body and the sleeve at the same time, the sleeve is prevented from loosening from the connector body, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of post-processing of plastic pipe joints, in particular to an anti-slip rib-type anti-loosening pipe joint. Background Art

[0002] Pipe fittings are accessories used to connect pipes or pipelines and are widely used in various industries and daily life. Their main function is to connect pipes together while providing reliable sealing and easy disassembly for maintenance and repair. Most pipe fittings use a threaded connection structure.

[0003] Existing threaded pipe joints have the following common problems:

[0004] 1. Nuts are generally assembled to the assembly object only through the thread structure, and lack a structure to prevent the nut from loosening. Therefore, the nut will loosen due to external forces such as vibration, and the connection strength between the nut and the assembly object will be significantly reduced. Although some pipe joints use double nuts or washers to prevent loosening, the anti-vibration and anti-loosening effect is not good enough;

[0005] 2. During the assembly process of the nut and the assembly object, the operator cannot intuitively predict the appropriate tightening degree of the nut, and the tightening degree mainly depends on the operator's personal experience; if the nut is not tightened enough, there is a risk of insufficient connection force and fluid leakage; if the nut is overtightened, there is a risk of component damage. Summary of the Invention

[0006] In order to solve the above problems existing in the prior art, the present invention provides an anti-slip rib type anti-loosening pipe joint, which can solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An anti-slip rib-type anti-loosening pipe joint, comprising:

[0009] A joint body, wherein both outer circumferential surfaces of the joint body along the axial direction form connecting surfaces, the joint body is provided with a plurality of first anti-slip ridges distributed in an array along the circumference of the maximum outer diameter, and both axial ends of the joint body are provided with access grooves, and the joint body can be a multi-way joint;

[0010] A sleeve, the sleeve being threadedly connected to the connecting surface of the joint body, and the outer diameter of the sleeve being circumferentially provided with a plurality of second anti-slip ridges distributed in an array;

[0011] A limiting structure, wherein the limiting structure is connected between the outer circumferential surfaces of the adjacent joint body and the sleeve through a first anti-slip ridge and a second anti-slip ridge, and the limiting structure is used to prevent the sleeve from rotating relative to the joint body;

[0012] The bead insertion joint has a bulging portion at one end, which is formed by bulging outward from the outside of the bead insertion joint. The end of the bead insertion joint with the bulging portion is pressed into the pipe body, and its bulging portion makes the pipe body in a state of expanded diameter. The bead insertion joint is connected to the joint body through an access groove to form a communication pipeline;

[0013] As the sleeve is screwed tightly with the joint body in a spiral manner, the pressing portion of the sleeve presses the other side of the bulging portion of the bead insertion joint and the outer layer pipe body on that side. The sleeve and the joint body apply a reverse pushing force to the bulging portion and the pipe body outside the bulging portion, so that the joint body, the sleeve and the pipe body are fixedly connected.

[0014] Preferably, the limiting structure includes a limiting pin and a pushing block. The cross-section of the limiting pin is trapezoidal, or the bottom of its cross-section is larger than the top. A trapezoidal groove with a large bottom and a small opening is formed between adjacent first anti-slip edges or second anti-slip edges. The shape and size of the groove match the limiting pin.

[0015] Preferably, the cross-section of the joint body is arranged in a "plus-minus" shape. The cross-section of the joint body from the center point along the radial direction is successively a spiral access portion and an abutting portion. The access groove is located between the fastening portion and the spiral access portion. The first anti-slip edge is located on the side of the abutting portion away from the fastening portion, and the shaft end of the sleeve abuts against the abutting portion.

[0016] Preferably, a thread structure is circumferentially arranged on the maximum inner diameter of the sleeve, and the thread structure is in threaded connection with the spiral access portion.

[0017] Preferably, the distance between adjacent two second anti-slip edges is the same as the distance between adjacent two first anti-slip edges, and the axial end faces of the second anti-slip edge and the first anti-slip edge are the same. A sealing block for stopping the limiting structure is arranged between two adjacent second anti-slip edges.

[0018] Preferably, the outer diameter of the first anti-slip edge is the same as the outer diameter of the limiting pin, and a plurality of convex strips are arranged on the side of the pushing block away from the limiting pin.

[0019] Preferably, align the anti-slip edges of the sleeve and the joint body axially and start tightening. When the sleeve is screwed tightly with the joint body in a spiral manner to the set position, the first anti-slip edge and the second anti-slip edge are axially aligned, and the groove of the first anti-slip edge is aligned with the groove of the second anti-slip edge.

[0020] Preferably, the limiting structure further includes a limiting band. The inner wall protrusion of the limiting band matches the trapezoidal groove, and the outer arc of the limiting band is less than or equal to 360 degrees.

[0021] The beneficial effects of the present invention are:

[0022] 1. By arranging a joint body and a sleeve, the two outer peripheral surfaces of the joint body along the axial direction form connecting surfaces. The joint body is provided with a plurality of first anti-slip ridges distributed in an array along the circumference of the maximum outer diameter. The outer sides of the two sleeves are respectively connected to the two connecting surfaces of the joint body, and a plurality of second anti-slip ridges distributed in an array along the circumference of the outer diameter of the sleeve are provided;

[0023] The beneficial effect that can be obtained is that after rotating and tightening the sleeve and the joint body, by observing whether the first anti-slip ridge and the second anti-slip ridge are aligned and whether the sleeve fits the end face of the joint body, the appropriate tightening degree of the sleeve can be directly judged, and the wear or corrosion of the pipe joint can be discovered in time, and it can be replaced to reduce losses.

[0024] 2. A limiting structure is provided, which is connected between the outer circumference of the adjacent joint body and the sleeve through a first anti-slip rib and a second anti-slip rib. The limiting structure is used to prevent the sleeve from rotating relative to the joint body. A trapezoidal groove with a large bottom and a small mouth is formed between the two first anti-slip ribs or the second anti-slip ribs. The limiting structure is slidably installed in the trapezoidal groove;

[0025] The beneficial effect that can be obtained is that by simultaneously inserting the limiting structure into the trapezoidal grooves of the joint body and the sleeve, the sleeve is prevented from rotating relative to the joint body and the sleeve is prevented from loosening from the joint body. The structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a cross-sectional view of the connector body of the present invention;

[0029] Figure 3 It is an exploded view of the present invention;

[0030] Figure 4 This is a side view of the installation structure diagram of the present invention;

[0031] Figure 5 FIG1 is a diagram showing the installation structure of the sleeve in the present invention;

[0032] Figure 6 This is a diagram of the installation structure of the limit pin and the push block in the present invention;

[0033] Figure 7 It is a side view of the limiting needle and the push block in the present invention;

[0034] Figure 8 This is a schematic diagram of the assembly of the connector body of the present invention;

[0035] Figure 9 This is the installation structure diagram of the limit belt in the present invention.

[0036] Explanation of the reference numerals in the drawings:

[0037] In the figure: 1. Joint body; 11. First anti-slip rib; 12. Spiral access part; 13. Contact part; 14. Access groove; 2. Sleeve; 21. Thread structure; 22. Second anti-slip rib; 23. Sealing block; 3. Limit structure; 31. Limit pin; 32. Push block; 33. Rib; 34. Limit belt; 4. Bead joint. Detailed implementation manners

[0038] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the drawings and preferred embodiments to clearly and completely describe the specific implementation manners, structures, features and their effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or position shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and thus should not be construed as a limitation to the present application.

[0040] Embodiment 1:

[0041] Refer to Figures 1-8 , a non-slip rib type anti-loosening pipe joint disclosed in the present invention, includes a joint body 1. Both outer peripheral surfaces of two axial segments of the joint body 1 form connection surfaces. A plurality of first anti-slip ribs 11 distributed in an array are circumferentially arranged on the joint body 1 along the maximum outer diameter. Access grooves 14 are provided at both axial ends of the joint body 1. The cross-section of the joint body 1 is arranged in a "plus" shape. The cross-section of the joint body 1 from the center point along the radial direction is successively a spiral access part 12 and a contact part 13. The access groove 14 is located between the bead joint 4 and the spiral access part 12. The first anti-slip ribs 11 are located on the side of the contact part 13 away from the bead joint 4. The axial end of the sleeve 2 abuts against the contact part 13. The joint body 1 can be a multi-way joint;

[0042] The sleeve 2 is threadedly connected to the connecting surface of the joint body 1, and the sleeve 2 is arranged in a manner that can be axially separated from the joint body 1. A threaded structure 21 is circumferentially provided with the maximum inner diameter of the sleeve 2, and the threaded structure 21 is threadedly connected to the spiral access portion 12. A plurality of second anti-slip ribs 22 distributed in an array are circumferentially provided on the outer diameter of the sleeve 2, and the spacing between two adjacent second anti-slip ribs 22 is the same as the spacing between two adjacent first anti-slip ribs 11. The second anti-slip ribs 22 and the axial end faces of the first anti-slip ribs 11 are the same. The axial end of the sleeve 2 abuts against the abutment 13, wherein a sealing block 23 for the stop limiting structure 3 is provided between two adjacent second anti-slip ribs 22. The lead of the threaded structure 21 is determined according to the starting state of screwing the joint body 1 and the sleeve 2, n is the degree of the central angle of the arc between the midpoints of the two adjacent first anti-slip ribs 11, and the number of lines of the threaded structure 21 is an integer multiple of n;

[0043] The limiting structure 3 is connected between the outer peripheral surfaces of the adjacent joint body 1 and sleeve 2 through the first anti-slip ridge 11 and the second anti-slip ridge 22. The limiting structure 3 is used to prevent the sleeve 2 from rotating relative to the joint body 1. The limiting structure 3 includes a limiting pin 31 and a push block 32. The cross-section of the limiting pin 31 is trapezoidal, or the bottom of its cross-section is larger than the top. A trapezoidal groove with a large bottom and a small mouth is formed between the adjacent first anti-slip ridges 11 or the second anti-slip ridges 22. The shape and size of the groove match the limiting pin 31. The outer diameter of the first anti-slip ridge 11 is the same as the outer diameter of the limiting pin 31. A plurality of ridges 33 are provided on the side of the push block 32 away from the limiting pin 31. The arc length L1 of the bottom side of the limiting pin 31 is greater than the arc length L2 of the top side. The limiting structure 3 matches the trapezoidal groove. The limiting structure 3 remains relatively stationary with the joint body 1 or sleeve 2 without the action of thrust;

[0044] The bead-in connector 4 has one end with a bulging portion pressed into the tube body, and the bulging portion causes the tube body to be in an expanded diameter state. The bead-in connector 4 is connected to the tube body through the access groove 14 to form a connecting pipe;

[0045] As the sleeve 2 and the joint body 1 are screwed together, the pressing portion of the sleeve 2 pushes the other side of the bulge and the outer tube body on that side, and the sleeve 2 and the joint body 1 apply reverse pushing force to the bulge and the outer tube body of the bulge, so that the joint body 1, the sleeve 2 and the tube body are connected and fixed.

[0046] Example 2:

[0047] Reference Figure 9 A non-slip rib-type anti-loosening pipe joint is different from the first embodiment in that the limiting structure 3 also includes a limiting belt 34, the inner wall protrusion of the limiting belt 34 matches the trapezoidal groove, and the outer curvature of the limiting belt 34 is less than or equal to 360 degrees.

[0048] The working principle and usage process of the present invention are as follows: first, the sleeve 2 is put on the tube body, and then the end of the bead joint 4 with the bulging part is pressed into the tube body, and the bulging part makes the tube body in an expanded diameter state, and the bead joint 4 is connected to the tube body to form a connecting pipe, and then the other end of the bead joint 4 is inserted into the annular access groove 14 of the joint body 1, and the port of the joint body 1 pushes one side of the bulging part and the outer layer of the tube body on that side, and the bead joint 4 is connected to the joint body 1 to form a connecting pipe, and then the sleeve 2 and the joint body 1 are screwed together, and the pressing part of the sleeve 2 pushes the other side of the bulging part of the bead joint 4 and the outer layer of the tube body on that side, and the sleeve 2 and the joint body 1 apply reverse pushing force to the bulging part and the outer layer of the tube body of the bulging part, so that the connection between the joint body 1, the sleeve 2 and the tube body is fixed.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An anti-slip rib-type anti-loosening pipe joint, characterized in that: Comprising: A joint body (1), both outer peripheral surfaces of two axial segments of the joint body (1) form connecting surfaces, the joint body (1) is provided with a plurality of first anti-slip ridges (11) arranged in an array along the circumferential direction of the maximum outer diameter, both axial ends of the joint body (1) are provided with access grooves (14), and the joint body (1) can be a multi-way joint; A sleeve (2), the sleeve (2) is threadedly connected to the connecting surface of the joint body (1), and a plurality of second anti-slip ridges (22) are arranged in an array along the circumferential direction of the outer diameter of the sleeve (2); A limiting structure (3), the limiting structure (3) is connected between the outer peripheral surfaces of the adjacent joint body (1) and the sleeve (2) through the first anti-slip ridges (11) and the second anti-slip ridges (22), and the limiting structure (3) is used to prevent the sleeve (2) from rotating relative to the joint body (1); A bead-in joint (4), one end of the bead-in joint (4) has a bulging part formed by bulging outwards from the outside, the end of the bead-in joint (4) with the bulging part is pressed into the pipe body, and its bulging part makes the pipe body in a diameter-expanded state, and the bead-in joint (4) is connected to the joint body (1) through the access groove (14) to form a communication pipeline; As the sleeve (2) is screwed tightly with the joint body (1), the pressing part of the sleeve (2) pushes the other side of the bulging part of the bead-in joint (4) and the outer layer pipe body on this side, and the sleeve (2) and the joint body (1) apply a reverse pushing force to the bulging part and the pipe body outside the bulging part, so that the joint body (1), the sleeve (2) and the pipe body are fixedly connected.

2. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: The limiting structure (3) includes a limiting pin (31) and a pushing block (32), the cross-section of the limiting pin (31) is trapezoidal, or the bottom of its cross-section is larger than the top, and a trapezoidal groove with a large bottom and a small mouth is formed between adjacent first anti-slip ridges (11) or second anti-slip ridges (12), and the shape and size of the groove match the limiting pin (31).

3. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: The cross-section of the joint body (1) is arranged in a "plus" shape, the cross-section of the joint body (1) from the center point along the radial direction is successively a spiral access part (12) and an abutting part (13), the access groove (14) is located between the fastening part (4) and the spiral access part (12), the first anti-slip ridges (11) are located on the side of the abutting part (13) away from the fastening part (4), and the axial end of the sleeve (2) abuts against the abutting part (13).

4. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: A thread structure (21) is arranged in the circumferential direction of the maximum inner diameter of the sleeve (2), and the thread structure (21) is threadedly connected with the spiral access part (12).

5. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: The distance between adjacent two of the second anti-slip ridges (22) is set to be the same as the distance between adjacent two first anti-slip ridges (11), and the axial end faces of the second anti-slip ridges (22) and the first anti-slip ridges (11) are set to be the same, and a sealing block (23) for stopping the limiting structure (3) is arranged between two adjacent second anti-slip ridges (22).

6. The anti-slip rib anti-loosening pipe joint according to claim 2, characterized in that: The outer diameter of the first anti-slip ridge (11) is set to be the same as the outer diameter of the limiting pin (31), and a plurality of convex strips (33) are arranged on the side of the pushing block (32) away from the limiting pin (31).

7. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: The anti-skid ridges of the sleeve (2) and the anti-skid ridges of the joint body (1) are aligned axially and tightening is started. When the sleeve (2) and the joint body (1) are screwed to a set position, the first anti-skid ridge (11) and the second anti-skid ridge (22) are aligned axially, and the grooves of the first anti-skid ridge (11) and the grooves of the second anti-skid ridge (22) are aligned.

8. The anti-slip rib anti-loosening pipe joint according to claim 1, characterized in that: The limiting structure (3) further comprises a limiting belt (34), the inner wall protrusion of the limiting belt (34) matches the trapezoidal groove, and the outer curvature of the limiting belt (34) is less than or equal to 360 degrees.

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