pipe joint

Abstract

The utility model belongs to the technical field of pipe fittings, and specifically provides a pipe joint. The utility model aims at solving the problem that the claw of the existing pipe joint needs a relatively complex mould and is high in cost. For this purpose, the pipe joint of the utility model comprises a joint body, m claws and a fixing ring, the joint body is limited to have a pipe cavity, and the outer circumferential surface of one end of the pipe cavity is an inner taper surface. The radial cross section of the claw is a 1 / m circular arc, m is a positive integer greater than or equal to 2; one end of the claw in the axial direction is provided with an outer taper surface, the outer taper surface is matched with the inner taper surface, so that the claw is embedded in the pipe cavity. The m claws are respectively installed on the fixing ring and can be gathered to each other. The utility model overcomes the above technical problems.

Description

Technical Field

[0001] This utility model belongs to the field of pipe fittings technology, and specifically provides a pipe connector. Background Technology

[0002] In pipeline transportation systems, pipe fittings are the core components for achieving pipe connection and sealing. Their connection reliability and ease of installation directly affect the system's operating efficiency and maintenance costs. Currently, claw-type pipe fittings are widely used in various fields such as water supply and drainage, and automobiles due to their advantages of strong connection and high adaptability.

[0003] A typical structure of existing clamp-type pipe fittings usually includes a fitting body and clamps. The clamps are generally cylindrical in shape, with multiple through-holes on the peripheral wall of the cylindrical structure to allow the clamps to retract and grip the pipe fitting. The fitting body has an inner conical surface, and the clamps have outer conical surfaces. The outer conical surface of the clamps fits into the inner conical surface of the fitting body, so that the inner conical surface of the fitting body and the outer conical surface of the clamps compress the ends of the clamps, forcing the clamps to retract and thus grip the pipe fitting.

[0004] However, the clamps in existing pipe fittings are one-piece structures, which require relatively complex molds and are therefore costly. Utility Model Content

[0005] One objective of this invention is to solve the problem that existing pipe fitting clamps require complex molds, resulting in high costs.

[0006] To achieve the above objectives, this utility model provides a pipe fitting, comprising: The connector body defines a cavity, and the outer peripheral surface of one end of the cavity is an inner conical surface; There are m jaws, and the radial cross section of each jaw is a circular arc of 1 / m, where m is a positive integer greater than or equal to 2; one end of each jaw in the axial direction is provided with an outer conical surface, which is adapted to the inner conical surface to embed the jaw into the cavity; A fixing ring, on which m of the aforementioned claws are respectively mounted and can be brought together.

[0007] Optionally, the m claws are distributed circumferentially around the fixing ring; and / or, at least one locking tooth is provided on the inner side of the claw, the locking tooth being inclined toward the fixing ring to clamp the pipe fitting inserted into the pipe connector and prevent the pipe fitting from being pulled out of the pipe connector in a direction away from the fixing ring.

[0008] Optionally, the claw includes a main body and a protruding part, and the fixing ring is provided with a locking hole, and the protruding part is engaged in the locking hole.

[0009] Optionally, the locking protrusion includes a root and a head, the cross-section of the head being larger than the cross-section of the root, so that the head passes through the locking hole and clamps the retaining ring in the middle with the body portion.

[0010] Optionally, the head protrudes outward at both ends in the circumferential direction of the fixing ring and includes a distal root bevel and a proximal root bevel, respectively, so that the head passes through the card hole through the distal root bevel and the proximal root bevel.

[0011] Optionally, the two ends of the head further include a vertical surface or an arcuate surface located between the distal root inclined surface and the proximal root inclined surface; and / or, the two ends of the head further include a radial surface located away from the distal root inclined surface on the proximal root inclined surface, so that the radial surface and the main body clamp the fixing ring in the middle.

[0012] Optionally, the card hole is generally H-shaped so that the retaining ring includes two cards extending into the card hole, the cards being fitted between the main body and the card protrusion.

[0013] Optionally, a plurality of spring pieces are provided on the side of the retaining ring away from the jaws to provide preload to the jaws when the pipe fitting is installed on the target object, thereby preventing the jaws from sliding or rotating.

[0014] Optionally, the spring is inclined away from the clasp along the circumference of the fixing ring; and / or, the end of the connector body near the clasp is provided with an external thread so that the pipe connector is fixed to the target object by the external thread.

[0015] Optionally, the pipe fitting further includes an insert that is removably inserted through the fitting body, the claw, and the retaining ring to temporarily secure the fitting body, the claw, and the retaining ring together; the insert includes an abutment portion and a radially contracting portion, the abutment portion abutting against the end of the fitting body away from the retaining ring, and a portion of the radially contracting portion penetrating the retaining ring and capable of contracting radially.

[0016] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this utility model, by installing m clamping claws respectively on the fixing ring and allowing them to converge with each other, the pipe fitting can be tightened while reducing the complexity of the clamping claw mold, thereby lowering the production cost of the clamping claws. Specifically, compared to the overall structure, setting the clamping claws as m components greatly reduces the complexity and design difficulty of the clamping claw mold. Furthermore, when the structure of the clamping claw mold is relatively complex, the yield of the clamping claws is also relatively low. Conversely, this utility model can improve the yield of the clamping claws, and when a particular clamping claw is damaged, it can be replaced, resulting in lower costs.

[0017] Furthermore, by setting multiple spring pieces on the side of the fixing ring away from the jaws, pre-pressure can be provided to the jaws when the pipe fitting is installed on the target object to prevent the jaws from sliding or rotating; at the same time, the alignment of the m jaws can be ensured, so that the jaws can be pressed into the pipe cavity evenly, avoiding misalignment between the jaws.

[0018] Furthermore, by configuring an insert for the pipe fitting and making the insert removable through the fitting body, claws, and retaining ring, the fitting body, claws, and retaining ring are temporarily fixed together, thus preventing the pipe fitting from being lost during transportation and installation.

[0019] Other beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purpose, features and advantages of this utility model. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, some embodiments of this utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar components or parts in different drawings; the drawings of this utility model are not necessarily drawn to scale. In the drawings: Figure 1 This is an exploded view (first axonometric view) of the pipe connector in some embodiments of this utility model. Figure 2 This is an exploded view (second isometric view) of the pipe connector in some embodiments of this utility model. Figure 3 This is a perspective view (first axonometric view) of the pipe connector in some embodiments of this utility model. Figure 4 This is a perspective view (second axonometric view) of the pipe connector in some embodiments of this utility model. Figure 5 This is a radial plan view of the pipe joint in some embodiments of this utility model; Figure 6It is along Figure 5 A cross-sectional view along the AA direction; Figure 7 yes Figures 1 to 6 Radial plan view of the middle jaw; Figure 8 yes Figures 1 to 6 Top view of the fixed ring; Figure 9 These are schematic diagrams illustrating the usage effects of the pipe connector in some embodiments of this utility model; Figure 10 This is a perspective view of the embedded component in some embodiments of this utility model; Figure 11 yes Figure 10 A schematic diagram illustrating the application effect of embedded components.

[0021] Explanation of reference numerals in the attached figures: 001. Pipe fitting; 002. Pipe fitting; 003. Target object; 100. Connector body; 110. Lumen; 111. Inner conical surface; 120. External thread; 200. Claw; 201. Outer conical surface; 202. Claw tooth; 210. Main body; 220. Claw protrusion; 221. Root; 222. Head; 2221. Distal root inclined surface; 2222. Proximal root inclined surface; 2223. Vertical surface; 2224. Radial surface; 300. Retaining ring; 301. Clip; 310. Clip; 320. Spring piece; 400. Sealing ring; 500, Insert; 510, Abutment; 520, Radial contraction. Detailed Implementation

[0022] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0023] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the corresponding device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For example, unless otherwise specified, the terms "installation," "connection," "joining," and "fixing" can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, insertion, riveting, fusion welding, or snap-fit.

[0025] like Figures 1 to 6 As shown, in some embodiments of this utility model, the pipe connector 001 includes a connector body 100, a claw 200, a retaining ring 300, and a sealing ring 400.

[0026] The connector body 100 defines a cavity 110, and the outer peripheral surface of one end of the cavity 110 is an inner conical surface 111.

[0027] The number of jaws 200 is m, where m is a positive integer greater than or equal to 2. The radial cross section of the jaw 200 is an arc of 1 / m or an arc slightly smaller than 1 / m. One end of the jaw 200 in the axial direction is provided with an outer conical surface 201, which is adapted to the inner conical surface 111 to fit the jaw 200 into the cavity 110.

[0028] The fixed ring 300 is connected to each of the m claws 200. That is, the m claws 200 are respectively installed on the fixed ring 300 and can be brought together.

[0029] The sealing ring 400 is provided on the connector body 100 to seal the connector body 100 and the pipe fitting 002 (e.g., Figure 9 As shown), and for sealing the joint body 100 and the target object 003 (as shown). Figure 9(As shown). The target object 003 can be a regular pipe fitting or a component with a threaded hole (such as a metal block).

[0030] Furthermore, those skilled in the art may omit the sealing ring 400 if necessary. However, in this case, the user would need to select the appropriate sealing ring 400 independently.

[0031] Those skilled in the art will understand that by mounting m claws 200 onto the fixing ring 300 and allowing them to converge, the complexity of the claw 200 mold can be reduced, thereby lowering the production cost of the claws 200, while enabling the pipe connector 001 to grip the pipe fitting 002. Specifically, compared to the overall structure, setting the claws 200 as m components significantly reduces the complexity and design difficulty of the claw 200 mold. Furthermore, when the structure of the claw 200 mold is complex, the yield rate of the claws 200 is relatively low. Conversely, this invention can improve the yield rate of the claws 200, and if a particular claw 200 is damaged, it can be replaced, resulting in lower costs.

[0032] like Figures 1 to 6 and Figure 9 As shown, in some embodiments of this utility model, the end of the connector body 100 near the claw 200 is provided with an external thread 120 so that the pipe connector 001 is fixed to the target object 003 through the external thread 120.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the number of claws 200 is 4. Of course, those skilled in the art can also set the number of claws 200 to any feasible number such as 2, 3, 5, 6, 8, etc., as needed.

[0034] Continue reading Figure 1 and Figure 2 In some embodiments of this utility model, m claws 200 are evenly spaced along the circumference of the fixing ring 300 so that the clamping force of the m claws 200 on the pipe fitting 002 is basically the same.

[0035] like Figure 2 and Figure 6 As shown, in some embodiments of this utility model, at least one locking tooth 202 is provided on the inner side of the claw 200. The locking tooth 202 is inclined toward the fixing ring 300 to clamp the pipe fitting 002 inserted into the pipe connector 001 and prevent the pipe fitting 002 from being pulled out of the pipe connector 001 in a direction away from the fixing ring 300.

[0036] from Figure 6 It can be seen from this that Figure 6The upper side of the middle locking tooth 202 is an inclined surface, and the lower side can be a flat surface, which can be parallel to the radial direction of the connector body 100.

[0037] like Figure 1 , Figure 2 and Figure 7 As shown, in some embodiments of this utility model, the pawl 200 includes a main body 210 and a pawl protrusion 220. The outer conical surface 201 and the pawl teeth 202 are both formed on the main body 210, and the pawl protrusion 220 is used to connect the retaining ring 300.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 8 As shown, in some embodiments of this utility model, the fixing ring 300 is provided with a locking hole 301 so that the locking protrusion 220 can be engaged in the locking hole 301.

[0039] like Figure 7 As shown, in some embodiments of the present invention, the card protrusion 220 includes a root 221 and a head 222. The cross-section of the head 222 is larger than the cross-section of the root 221, so that the head 222 passes through the card hole 301 and clamps the fixing ring 300 in the middle with the main body 210.

[0040] Continue reading Figure 7 The head 222 protrudes outward at both ends in the circumferential direction of the retaining ring 300 and includes a distal root bevel 2221 and a proximal root bevel 2222, respectively, so that the head 222 passes through the retaining hole 301 through the distal root bevel 2221 and the proximal root bevel 2222. Simultaneously, the proximal root bevel 2222 also allows the retaining claw 200 to be detached from the retaining ring 300 after it has been installed. In this way, when one retaining claw 200 is damaged, only the retaining claw 200 can be replaced, without replacing the entire pipe fitting 001, resulting in lower maintenance costs.

[0041] Continue reading Figure 7 The two ends of the head 222 also include a vertical surface 2223 or an arc-shaped surface located between the distal root inclined surface 2221 and the proximal root inclined surface 2222, so that the junction of the distal root inclined surface 2221 and the proximal root inclined surface 2222 can smoothly pass through the locating hole 301.

[0042] Continue reading Figure 7 The head 222 also includes radial surfaces 2224 located on the near root slope 2222 away from the far root slope 2221, so that the radial surfaces 2224 and the main body 210 clamp the fixing ring 300 in the middle, preventing the head 222 from being accidentally pulled out of the locking hole 301.

[0043] like Figure 1 , Figure 2 and Figure 8As shown, in some embodiments of this utility model, the card hole 301 is generally H-shaped, so that the fixing ring 300 includes two cards 310 extending into the card hole 301. In the assembled state, the cards 310 are embedded between the main body 210 and the card protrusion 220.

[0044] As the head 222 of the protrusion 220 passes through the hole 301 on the retaining ring 300, the card 310 is forced to deform, increasing the diameter of the hole 301 and ensuring that the head 222 can pass through the hole 301 on the retaining ring 300. After the head 222 of the protrusion 220 passes through the hole 301 on the retaining ring 300, the card 310 returns to its original shape under its own elastic force.

[0045] like Figures 1 to 6 As shown, in some embodiments of this utility model, a plurality of spring pieces 320 are provided on the side of the fixing ring 300 away from the claw 200, so that when the pipe fitting 001 is installed on the target object 003, the spring pieces 320 ensure the centering of the m claws 200, evenly grip the pipe fitting 002, and evenly press the m claws 200 into the pipe cavity 110.

[0046] Those skilled in the art will understand that by providing multiple spring pieces 320 on the side of the fixing ring 300 away from the claw 200, pre-pressure can be provided to the claw 200 when the pipe joint 001 is installed on the target object 003, preventing the claw 200 from sliding or rotating; at the same time, it can also ensure the alignment of the m claws 200, so that the claws 200 can be pressed evenly into the tube cavity 110, avoiding misalignment between the claws 200.

[0047] like Figure 2 As shown, the spring piece 320 is tilted away from the pawl 200 along the circumference of the fixing ring 300 to ensure that the spring piece 320 can deform smoothly and has a certain elasticity.

[0048] Furthermore, the tilting direction of the spring piece 320 is the same as the direction in which the connector body 100 is screwed into the target object 003, so that the end of the spring piece 320 away from the connector body 100 abuts against the target object 003 and generates a force that resists the rotation of the spring piece 320 with the connector body 100, so as to prevent the pawl 200 from rotating with the connector body 100.

[0049] In some embodiments of this utility model, the connector body 100, the claw 200, and the fixing ring 300 can each be made of any feasible material, such as metal, plastic, nylon, ceramic, etc.

[0050] The following reference Figure 1 , Figure 2 , Figure 6 and Figure 9The following is a brief explanation of the usage of the pipe connector 001 in some embodiments of this utility model.

[0051] When using pipe fitting 001, first install each of the m clamps 200 onto the retaining ring 300, and pre-install the sealing ring 400 onto the fitting body 100. Then, insert the pipe fitting 002, moving it towards the retaining ring 300, through the fitting body 100, clamps 200, and retaining ring 300 in sequence. Next, insert pipe fitting 001 into the target object 003. Finally, tighten pipe fitting 001.

[0052] like Figure 9 As shown, the hole (not marked in the figure) on the target object 003 that is adapted to the pipe fitting 001 is a stepped hole to ensure that the pipe fitting 001 can hold the pipe fitting 002 tightly, as detailed below.

[0053] During the tightening of pipe fitting 001, when the fitting body 100 extends into the stepped hole of the target object 003, the spring piece 320 of the retaining ring 300 first abuts against the stepped surface of the stepped hole to ensure the concentricity of the m claws 200 and prevent the m claws 200 from deviating. As the fitting body 100 continues to extend, the locking protrusions 220 of the claws 200 begin to abut against the stepped surface and begin to force the heads 222 of the claws 200 to increase their insertion depth into the fitting body 100. Thus, under the action of the inner conical surface 111 and the outer conical surface 201, the m claws 200 converge towards the center and tighten around the pipe fitting 002.

[0054] like Figure 10 and Figure 11 As shown, in some embodiments of this utility model, the pipe connector 001 may further include an insert 500, which is removably inserted through the connector body 100, the claw 200 and the fixing ring 300 to temporarily fix the connector body 100, the claw 200 and the fixing ring 300 together.

[0055] Those skilled in the art will understand that by configuring an insert 500 for the pipe fitting 001 and making the insert 500 removably pass through the fitting body 100, the claw 200 and the retaining ring 300, the fitting body 100, the claw 200 and the retaining ring 300 are temporarily fixed together, thus preventing the pipe fitting 001 from being lost during transportation and installation.

[0056] like Figure 10 As shown, the insert 500 includes an abutment portion 510 and a radially contracting portion 520. The abutment portion 510 abuts against the end of the connector body 100 away from the retaining ring 300, and a portion of the radially contracting portion 520 passes through the retaining ring 300 and is capable of contracting radially.

[0057] Those skilled in the art will understand that this structure of the insert 500 allows it to pass smoothly through the connector body 100, the claw 200, and the retaining ring 300, and to be easily pulled out of the connector body 100, the claw 200, and the retaining ring 300, making it convenient and efficient to use.

[0058] The technical solution of this utility model has been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is not limited to these specific embodiments. Without departing from the technical principles of this utility model, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this utility model will fall within the protection scope of this utility model.

Claims

1. A pipe fitting, characterized in that, include: The connector body defines a cavity, and the outer peripheral surface of one end of the cavity is an inner conical surface; There are m jaws, and the radial cross section of each jaw is a circular arc of 1 / m, where m is a positive integer greater than or equal to 2; one end of each jaw in the axial direction is provided with an outer conical surface, which is adapted to the inner conical surface to embed the jaw into the cavity; A fixing ring, on which m of the aforementioned claws are respectively mounted and can be brought together.

2. The pipe fitting according to claim 1, characterized in that, The m jaws are distributed at circumferential intervals along the fixing ring; and / or, The inner side of the claw is provided with at least one locking tooth, which is inclined toward the fixing ring to clamp the pipe fitting inserted into the pipe connector and prevent the pipe fitting from being pulled out of the pipe connector in a direction away from the fixing ring.

3. The pipe fitting according to claim 1, characterized in that, The claw includes a main body and a protruding part. The fixing ring is provided with a locking hole, and the protruding part is engaged in the locking hole.

4. The pipe fitting according to claim 3, characterized in that, The card protrusion includes a root and a head, the cross-section of which is larger than the cross-section of the root, so that the head passes through the card hole and clamps the retaining ring in the middle with the body.

5. The pipe fitting according to claim 4, characterized in that, The head protrudes outward at both ends in the circumferential direction of the fixing ring and includes a distal root inclined surface and a proximal root inclined surface, respectively, so that the head passes through the card hole through the distal root inclined surface and the proximal root inclined surface.

6. The pipe fitting according to claim 5, characterized in that, The two ends of the head also respectively include a vertical surface or an arcuate surface located between the distal root inclined surface and the proximal root inclined surface; and / or, The two ends of the head also include radial surfaces located on the proximal root slope away from the distal root slope, so that the radial surfaces and the main body clamp the fixing ring in the middle.

7. The pipe fitting according to any one of claims 3 to 6, characterized in that, The card hole is generally H-shaped, so that the fixing ring includes two cards extending into the card hole, the cards being embedded between the main body and the card protrusion.

8. The pipe fitting according to claim 7, characterized in that, Multiple spring pieces are provided on the side of the retaining ring away from the jaws to provide pre-pressure to the jaws when the pipe fitting is installed on the target object, preventing the jaws from sliding or rotating.

9. The pipe fitting according to claim 8, characterized in that, The spring clip is inclined circumferentially away from the chuck along the retaining ring; and / or, The connector body has an external thread at one end near the claw, so that the pipe connector can be fixed to the target object through the external thread.

10. The pipe fitting according to any one of claims 1 to 6, characterized in that, The pipe fitting also includes an insert that is removably inserted through the fitting body, the claw, and the retaining ring to temporarily fix the fitting body, the claw, and the retaining ring together; The insert includes an abutting portion and a radially contracting portion. The abutting portion abuts against the end of the connector body away from the retaining ring, and a portion of the radially contracting portion passes through the retaining ring and is capable of contracting radially.

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