Strain-proof connector

Abstract

A retaining connector including: a connecting portion (10) on which a screw connection section (11) is installed; and a protruding portion (20) protruding and installed at an end portion or a peripheral wall of the connecting portion (10), the protruding portion (20) extending along a peripheral edge or a peripheral wall of the connecting portion (10), the protruding portion (20) having a force-receiving surface (21) and a stress relief surface (22) which are oppositely installed, there being at least two protruding portions (20), the two protruding portions (20) being spaced apart and installed along the peripheral edge or the peripheral wall of the connecting portion (10), a clamping section being formed in a gap between two adjacent protruding portions (20). A force-receiving side line (211) is formed on a side of the force-receiving surface (21) away from an inner wall of the connecting portion (10). When the length of the force-receiving side line (211) is L, 5 mm < L < 20 mm. The retaining connector can solve the technical problem that a pipe joint in the prior art easily falls off due to misoperation.

Description

[Technical field]

[0001] This application claims priority to a patent application filed with the State Intellectual Property Office of China on June 11, 2021, bearing application number 202121318736.5 and entitled “Anti-pullout Connector.”

[0002] FIELD OF THE DISCLOSURE This application relates to the field of check valve technology, and more particularly to anti-disconnect connectors. [Background technology]

[0003] Currently, in the current technology, when welding the evaporator and the connecting pipe of an air conditioner, in order to quickly install it, the pipe joint and the joint nut must be engaged and connected. However, if an incorrect operation occurs during use, cleaning, or maintenance, the joint nut can easily fall off the pipe joint, causing leakage from the pipe. Summary of the Invention [Problem to be solved by the invention]

[0004] The main object of the present application is to provide a pull-out prevention connector, and to solve the technical problem that the pipe joints in the current technology are easily pulled out due to incorrect operation. [Means for solving the problem]

[0005] In order to achieve the above object, according to one aspect of the present application, there is provided a slip-out prevention connector including: a connection part, on which a screw connection section is provided; and a protrusion, the protrusion being provided to protrude from an end or peripheral wall of the connection part, the protrusion extending along the peripheral edge or peripheral wall of the connection part, the protrusion having a force-receiving surface and a stress relief surface opposite to each other, the number of protrusions being at least two, the two protrusions being provided spaced apart along the peripheral edge or peripheral wall of the connection part, and a clamping section being formed in a gap between two adjacent protrusions, the force-receiving side line being formed on the side of the force-receiving surface away from the inner wall of the connection part, and the length of the force-receiving side line being L, the force-receiving side line being 5 mm or more. <L<20mmである。

[0006] Furthermore, the force-receiving side line is arranged parallel to the axis of the connection part.

[0007] Furthermore, the force receiving surface is a flat surface, the force receiving surface is disposed parallel to the axis of the connection portion, and / or the stress relief surface is a curved surface.

[0008] Furthermore, the stress relief surface is a curved surface, and the stress relief surface is disposed so as to recess toward the inside of the protrusion.

[0009] Furthermore, if the included angle between the stress relief surface and the radial cross section of the connection portion is α, then 20°≦α≦50°.

[0010] Furthermore, the connection portion between the force receiving surface and the connection portion is a circular arc transition portion, and / or the connection portion between the stress relief surface and the connection portion is a circular arc transition portion.

[0011] The protrusion further includes an outer arcuate surface, the outer arcuate surface being located between the force receiving surface and the stress relief surface, and the connection between the outer arcuate surface and the stress relief surface being an arcuate transition portion.

[0012] Furthermore, the protrusion has a reinforcing portion, and the reinforcing portion has a reinforcing end face formed at one end remote from the screw connection section, the reinforcing end face is parallel to the end face of the connection portion, and a machining plane is provided toward the reinforcing end face adjacent to the screw connection section at the clamping section, and the machining plane is parallel to the reinforcing end face.

[0013] Furthermore, there are two protrusions, and the two protrusions are symmetrically disposed on the end or periphery of the connecting portion.

[0014] According to another aspect of the present application, there is provided a slip-out prevention connector including: a connection part, the connection part having a screw connection section; and a protrusion, the protrusion being installed so as to protrude from a peripheral wall of the connection part, the protrusion extending along the peripheral edge or the peripheral wall of the connection part, the protrusion having a force-receiving surface and a stress relief surface opposite to the force-receiving surface and the protrusion being at least one protrusion, a clamping section being formed in a gap between the protrusion and the peripheral wall of the connection part, the force-receiving side line being formed on the side of the force-receiving surface away from the inner wall of the connection part, and the length of the force-receiving side line being L, the force-receiving side line being 5 mm <L<20mmである。

[0015] When the technical means of the present application are applied, in a specific operation, an operating tool acts on the force-receiving surface to screw-connect the screw connection section of the connection part and the first connection part. After the anti-slip connector is attached to the first connection part, even if the operating tool acts on the force-receiving surface, it can only fasten the anti-slip sleeve to the first connection part, and if the operating tool acts on the stress relief surface, the stress acting on the stress relief surface cannot act on the connection part, so the connection part cannot be quickly removed using the operating tool, and an effective anti-slip effect is achieved. Therefore, the anti-slip sleeve provided by the present application can solve the technical problem of the existing technology that pipe joints are easily pulled out due to incorrect operation.

[0016] The accompanying drawings, which form a part of the present application, are provided for a better understanding of the present application, but the schematic examples and the description thereof are for the purpose of interpreting the present application and do not constitute an undue limitation to the present application. [Brief description of the drawings]

[0017] [Figure 1] 1 is a structural schematic diagram showing a slip-out prevention connector provided according to Example 1 of the present application. [Diagram 2] 1 is a structural schematic diagram showing another angle of the anti-slip connector provided according to Example 1 of the present application. FIG. [Diagram 3] 1 is a structural schematic diagram showing a slip-out prevention connector provided based on Example 1 of the present application, in which the connection portion between the force-receiving surface and the connection portion is a circular arc transition portion. FIG. [Figure 4] 13 is a structural schematic diagram showing another angle of a slip-out prevention connector provided based on Example 1 of the present application, in which the connection point between the force-receiving surface and the connection portion is a circular arc transition portion. FIG. [Diagram 5] 1 is a front view showing a disconnection prevention connector provided based on a first embodiment of the present application, in which the connection portion between the force-receiving surface and the connection portion is a circular arc transition portion. FIG. [Figure 6] FIG. 2 is a top view showing a slip-out prevention connector provided based on a first embodiment of the present application, in which the connection portion between the force-receiving surface and the connection portion is an arc transition portion. [Figure 7] 1 is a half-sectional view showing a disconnection prevention connector provided according to a first embodiment of the present application. [Figure 8] 1 is a right side view showing a disconnection prevention connector provided according to a first embodiment of the present application. [Figure 9] 1 is a schematic diagram of an attachment structure showing a disconnection prevention connector provided according to a first embodiment of the present application. [Figure 10] 1 is a front view showing a mounting structure for a disconnection prevention connector provided according to a first embodiment of the present application. [Figure 11] 1 is a cross-sectional view showing a mounting structure for a disconnection-prevention connector provided based on a first embodiment of the present application.

[0018] The above attached drawings include the following reference numbers: 10 connection part, 11 screw connection section, 12 chamfer, 13 machining plane, 20 protrusion, 21 force receiving surface, 211 force receiving side line, 22 stress relief surface, 23 outer arc surface, 24 reinforcing end surface, 30 first connection member, 40 second connection member, 50 arc transition portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In addition, the embodiments and features of the embodiments in the present application may be combined with each other as long as no inconsistency occurs. Hereinafter, the present application will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0020] As shown in FIGS. 1 to 11, in Example 1 of the present application, an anti-disconnection connector is provided. The anti-disconnection connector includes a connection portion 10 and a protrusion 20, and a screw connection section 11 is installed in the connection portion 10. The protrusion 20 is installed protruding from an end portion or a peripheral wall of the connection portion 10. The protrusion 20 extends along a periphery or a peripheral wall of the connection portion 10. The protrusion 20 has a force-receiving surface 21 and a stress-relieving surface 22 that are oppositely installed. There are at least two protrusions 20. The two protrusions 20 are installed at intervals along the periphery or the peripheral wall of the connection portion 10. A clamping section is formed in a gap between two adjacent protrusions 20. A force-receiving side line 211 is formed on a side of the force-receiving surface 21 away from an inner wall of the connection portion 10. If the length of the force-receiving side line 211 is L, then 5 mm < L < 20 mm. Specifically, the protrusion 20 of the anti-disconnection connector shown in the accompanying drawings of the specification is installed on the peripheral wall of the connection portion 10.

[0021] When the anti-disconnection connector provided in this embodiment is adopted, during specific operation, an operating tool acts on the force-receiving surface 21 to screw-connect the screw connection section 11 of the connection portion 10 and the first connection member 30. After the anti-disconnection connector is attached to the first connection member 30, even if the operating tool acts on the force-receiving surface 21, the anti-disconnection sleeve can only be fastened to the first connection member 30. When the operating tool acts on the stress-relieving surface 22, the stress acting on the stress-relieving surface 22 cannot act on the connection portion 10. Therefore, the connection portion 10 cannot be quickly removed through the operating tool, and the anti-disconnection effect is effectively exerted. Specifically, when the operating tool is a dedicated tool, the operating tool adheres to the force-receiving surface 21 and applies stress to the force-receiving surface 21 to fasten the anti-disconnection connector. When the operating tool is operated in the reverse direction and acts on the stress-relieving surface 22, the operating tool detaches from the anti-disconnection connector along the stress-relieving surface 22, and the anti-disconnection connector cannot be removed.

[0022] Specifically, when the operating tool is a monkey wrench, when the operating tool performs a fastening operation, the operating tool (mainly the operating tool in this embodiment is a monkey wrench) acts on the two force receiving side lines 211 arranged to clamp, and by setting the length of the force receiving side lines 211 within the above range, the contact position between the operating tool and the force receiving side lines 211 can be guaranteed, the stable biasing of the operating tool can be guaranteed, and the stability of the operation can be improved. If the operating tool is operated in the opposite direction to the force receiving side lines 211, it will detach from the two force receiving side lines 211 and cannot be removed. Therefore, the slip-out prevention sleeve provided by this embodiment can solve the technical problem that the pipe joint in the existing technology is easily slipped out due to erroneous operation. As can be understood, if the force receiving side lines 211 are too short, it is not possible to operate using a monkey wrench, and if the force receiving side lines 211 are too long, it is not possible to realize the slip-out prevention function.

[0023] Specifically, in this embodiment, the force-receiving side line 211 is installed parallel to the axis of the connection part 10. When such a structure is adopted and a fastening operation is performed on the connection part 10, the occurrence of a fastening failure or a pinching and detachment during the fastening operation process is avoided, and the convenience of the operation is improved.

[0024] Specifically, the force receiving surface 21 can be a flat surface, and the force receiving surface 21 is arranged parallel to the axis of the connection part 10 for the convenience of the fastening operation. Alternatively, the stress relief surface 22 is a curved surface, so that the operating tool is released along the stress relief surface 22 to ensure effective stress relief. Alternatively, the force receiving surface 21 is a flat surface, the force receiving surface 21 is arranged parallel to the axis of the connection part 10, and the stress relief surface 22 is a curved surface.

[0025] Preferably, the force receiving surface 21 in this embodiment is flat, and is installed parallel to the axis of the connection part 10, so that only the force receiving side line 211 of the force receiving surface 21 can come into contact with the operating tool and act on it, and other parts of the force receiving surface 21 are prevented from coming into contact with the operating tool, thereby improving the convenience of operation.

[0026] In this embodiment, the stress relief surface 22 is a curved surface, and is disposed so as to recess toward the inside of the protrusion 20. By adopting such a structural installation, the stress relief surface and the operating tool can be more effectively detached, and the slip-out prevention function can be more effectively realized.

[0027] Specifically, in this embodiment, if the included angle between the stress relief surface 22 and the radial cross section of the connection part 10 is α, then α is less than 60°, and preferably 20°≦α≦50°. In other words, if the included angle between the projection plane of the axial cross section of the stress relief surface 22 and the radial cross section is α, then α is less than 60°, and preferably 20°≦α≦50°, or the included angle between the tangent line of the stress relief surface 22 and the axis line of the connection part 10 is α. By adopting such a structural installation, it is possible to effectively achieve the slip-out prevention function.

[0028] Specifically, the connection point between the force receiving surface 21 and the connection portion 10 can be an arc transition portion 50. Alternatively, the connection point between the stress relief surface 22 and the connection portion 10 can be an arc transition portion 50. Alternatively, the connection point between the force receiving surface 21 and the connection portion 10 can be an arc transition portion 50, and the connection point between the stress relief surface 22 and the connection portion 10 can also be an arc transition portion 50.

[0029] Preferably, in this embodiment, the connection portion between the force receiving surface 21 and the connection portion 10 is a circular arc transition portion 50, and the connection portion between the stress relief surface 22 and the connection portion 10 is also a circular arc transition portion 50. By adopting such a structural installation, stress concentration occurs at the connection portion between the force receiving surface 21 and the connection portion 10, and stress concentration is prevented from occurring at the connection portion between the stress relief surface 22 and the connection portion 10, thereby improving the internal performance of the structure.

[0030] Specifically, the protrusion 20 in this embodiment further includes an outer arc surface 23, which is located between the force receiving surface 21 and the stress relief surface 22, and the connecting portion between the outer arc surface 23 and the stress relief surface 22 is an arc transition portion 50. This makes it possible to prevent stress concentration from occurring at the connecting portion between the outer arc surface 23 and the stress relief surface 22. In addition, the pull-out prevention function can be further improved.

[0031] In this embodiment, the protrusion 20 has a reinforcing portion, and the reinforcing portion has a reinforcing end face 24 formed at one end of the protrusion 20 remote from the screw connection section 11, and the reinforcing end face 24 is parallel to the end face of the connection part 10. A clamping section is formed between two adjacent protrusions 20, and a processing plane 13 is provided in the clamping section close to the screw connection section 11 and facing the reinforcing end face 24, and the processing plane 13 is parallel to the reinforcing end face 24 for the convenience of processing operations.

[0032] In this embodiment, the connection part 10 is a connection pipe, and the screw connection section 11 is installed on the peripheral wall of the connection pipe, and the screw connection section 11 is installed apart from the protrusion 20. The slip-out prevention connector further includes a chamfer 12, which is installed on the inner wall surface of the connection pipe, and the chamfer 12 is located at one end of the connection pipe close to the protrusion 20, and is used for pre-installing the annular filler metal when welding to the second connection member 40. By adopting such a structural installation, the flow passage in the first connection member 30 and the flow passage in the second connection member 40 are communicated by connecting the screw connection section 11 and the first connection member 30 and welding the slip-out prevention connector to the second connection member 40. Specifically, the first connecting material 30 includes a transition and a nut, the nut is fitted outside the transition and is screw-connected to the anti-slip connector, and an expansion section is provided at one end of the transition close to the anti-slip connector, the expansion section is located between the nut and the anti-slip connector, and abuts against the nut and the anti-slip connector respectively to achieve sealing.

[0033] Specifically, the thickness of the protrusion 20 in this embodiment is greater than the thickness of the connecting pipe, so that the strength of the convex block and the connecting pipe are guaranteed. Specifically, the portion where the thickness of the protrusion 20 is greater than the thickness of the connecting pipe can be used to form the reinforcing portion. The outer arc surfaces 23 of the two convex blocks are both arc surfaces. The anti-slip connector in this embodiment can be an integrally molded structure, and for convenience of processing, the space between the two adjacent convex blocks is a processing plane. The threaded connection section 11 in this embodiment is an external thread section, and the external thread section is connected to the first connecting member 30, and the length of the external thread section is greater than the length of the internal thread section of the first connecting member 30, so as to facilitate stable connection. The anti-slip connector provided in this embodiment is used to achieve sealing when fastened in a clockwise direction, and cannot be loosened or removed in a counterclockwise direction.

[0034] Specifically, in this embodiment, two protrusions 20 can be installed, and the two protrusions 20 are symmetrically installed on the end or periphery of the connecting part 10. By adopting such a structural installation, the structural layout is optimized, the compactness of the structural installation is improved, and the operation is convenient.

[0035] A second embodiment of the present application provides a slip-out prevention connector, which includes a connection part 10 and a protrusion 20, and a screw connection section 11 is provided in the connection part 10. The protrusion 20 is provided to protrude from the peripheral wall of the connection part 10, and extends along the periphery or peripheral wall of the connection part 10, and has a force-receiving surface 21 and a stress relief surface 22 that are provided opposite to each other, there is at least one protrusion 20, and a clamping section is formed in the gap between the protrusion 20 and the peripheral wall of the connection part 10. A force-receiving side line 211 is formed on the side of the force-receiving surface 21 away from the inner wall of the connection part 10, and when the length of the force-receiving side line is L, it is 5 mm <L<20mmである。

[0036] The main difference between the anti-slip connector of this embodiment and the anti-slip connector of the first embodiment is the difference in the clamping section. Specifically, when the operating tool is fastened during operation, one working end of the operating tool acts on the force-receiving side line 211, and the other working end of the operating tool acts on the peripheral wall. By setting the force-receiving side line 211 within the above range, the contact position between the operating tool and the force-receiving side line 211 is guaranteed, the stable biasing of the operating tool is guaranteed, and the stability of operation can be improved. If operated in the opposite direction, the operating tool moves along the stress relief side line and detaches from the anti-slip connector, making it impossible to remove. Therefore, the anti-slip sleeve provided by this embodiment can solve the technical problem of the existing technology that the pipe joint easily falls off due to incorrect operation.

[0037] Specifically, the anti-disconnection connectors in the above two embodiments can both be used in check valves of air conditioners.

[0038] As can be seen from the above description, the above-described embodiments of the present application achieve the technical effects of a simple structure, prevention of falling off, and stable operation.

[0039] It should be noted that the terminology used herein is merely for the purpose of describing specific embodiments and is not intended to be limiting of the exemplary embodiments according to the present application. As used herein, the singular form intends to include the plural form unless the context clearly indicates otherwise, and it should be further understood that when used herein, the terms "comprise" and / or "include" specify that features, steps, operations, devices, components, and / or combinations thereof are present.

[0040] Unless otherwise specifically described, the relative arrangement of the components and steps described in these embodiments, numerical designations and values ​​are not intended to limit the scope of the present application. At the same time, as is clear, for the sake of simplicity, the dimensions of the parts shown in the accompanying drawings are not drawn based on actual proportions. Those skilled in the art may not have given detailed consideration to known techniques, methods and equipment, but under appropriate circumstances, such techniques, methods and equipment should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific numerical values ​​should be construed as illustrative only and not limiting. Thus, other examples of the schematic embodiments may have different numerical values. It should be noted that similar numbers and letters indicate similar items in the following accompanying drawings, so that once an item is defined in one accompanying drawing, it is not necessary to further discuss it in subsequent accompanying drawings.

[0041] In the depiction of the present application, it should be understood that the orientations or positional relationships indicated by directional words, such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" are generally based on the orientations or positional relationships shown in the accompanying drawings, but unless a contrary description is made for the purpose of easily depicting and simplifying the depiction of the present application, such directional words do not indicate or imply that the indicated devices or elements must have a structure and operation in a specific orientation or in a specific direction, and therefore should not be understood as limitations on the scope of protection of the present application, and the directional words "inside, outside" refer to the inside and outside of the outline of each member body.

[0042] For convenience of depiction, spatially relative terms used herein, such as "above," "upper," "upper surface of," "on top of," and the like, depict the spatial location of one device or feature depicted in a figure relative to other devices or features. It should be understood that the spatially relative terms are meant to encompass different orientations during use or operation other than the orientation depicted in the figure of the device. For example, if a device in the accompanying drawings is inverted, it would be depicted "above other devices or structures" or "on top of other devices or structures" and then positioned "below other devices or structures" or "below other devices or structures." Thus, the exemplary term "above" can include two orientations, "above" and "below." The device can be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative depictions used herein can be interpreted accordingly.

[0043] It should also be noted that when terms such as "first" and "second" are used to limit parts or components, this is done merely to conveniently distinguish corresponding parts or components, and unless otherwise expressly stated, the above terms do not have any special connotation, and therefore should not be understood as a limitation on the scope of protection of the present application.

[0044] The above description is only for the preferred embodiments of the present application, and does not limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A connection (10), on which a screw connection section (11) is installed; a protrusion (20) that is installed to protrude from an end or peripheral wall of the connection part (10), that extends along the peripheral edge or peripheral wall of the connection part (10), that has a force receiving surface (21) and a stress relief surface (22) that are installed opposite each other in the circumferential direction, that there are two protrusions (20), that the two protrusions (20) are installed apart from each other along the peripheral edge or peripheral wall of the connection part (10), and a clamping section is formed in the gap between two adjacent protrusions (20); A force-receiving side line (211) is formed on the side of the force-receiving surface (21) away from the inner wall of the connection portion (10), and the length of the force-receiving side line (211) is L, and 5 mm<L<20 mm is satisfied; The connection between the force receiving surface (21) and the connection portion (10) is a circular arc transition portion, and / or The connection between the stress relief surface (22) and the connection portion (10) is a circular arc transition portion; The protrusion (20) further includes an outer arc surface (23), the outer arc surface (23) is located between the force-receiving surface (21) and the stress relief surface (22), and the connection point between the outer arc surface (23) and the stress relief surface (22) is an arc transition portion.

2. The connector according to claim 1, wherein the force-receiving side line (211) is arranged parallel to the axis of the connecting portion (10).

3. The force receiving surface (21) is a plane, and the force receiving surface (21) is arranged parallel to the axis of the connection part (10), and / or 2. The connector of claim 1, wherein the stress relief surface (22) is a curved surface.

4. 2. The connector according to claim 1, wherein the stress relief surface (22) is a curved surface, and the stress relief surface (22) is disposed so as to recess toward the inside of the protrusion (20).

5. The connector according to claim 1, characterized in that, when the included angle between the tangent to the stress relief surface (22) and the axis of the connection portion (10) is α, 20°≦α≦50°.

6. The protrusion (20) has a reinforcing portion, the reinforcing portion having a reinforcing end surface (24) formed at one end remote from the screw connection section (11), the reinforcing end surface (24) being parallel to the end face of the connection portion (10), and a machining plane (13) is provided toward the reinforcing end surface (24) adjacent to the screw connection section (11) in the clamping section, the machining plane (13) being parallel to the reinforcing end surface (24).

7. The connector according to claim 1, characterized in that there are two protrusions (20), and the two protrusions (20) are symmetrically installed on the end or periphery of the connection portion (10).

8. A connection (10), on which a screw connection section (11) is installed; a protrusion (20) that is installed so as to protrude from a peripheral wall of the connection portion (10), that extends along the peripheral edge or peripheral wall of the connection portion (10), that has a force-receiving surface (21) and a stress relief surface (22) that are installed opposite each other in the circumferential direction, that there is at least one protrusion (20), and that a clamping section is formed in a gap between the force-receiving surface (21) and the stress relief surface (22) of the protrusion (20); A force-receiving side line (211) is formed on the side of the force-receiving surface (21) away from the inner wall of the connection portion (10), and the length of the force-receiving side line (211) is L, and 5 mm<L<20 mm is satisfied; The connection between the force receiving surface (21) and the connection portion (10) is a circular arc transition portion, and / or The connection between the stress relief surface (22) and the connection portion (10) is a circular arc transition portion; The protrusion (20) further includes an outer arc surface (23), the outer arc surface (23) is located between the force-receiving surface (21) and the stress relief surface (22), and the connection point between the outer arc surface (23) and the stress relief surface (22) is an arc transition portion.

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