Patent Description:
The present invention relates to the field of anti-disassembly connector of air conditioner, and in particular, to an anti-disassembly connector, an anti-disassembly connection assembly, and an air conditioner.

At present, an indoor unit of a split air conditioner requires a non-detachable connector, so as to ensure inner sealing of the indoor unit and prevent refrigerant leakage caused by a mistaken disassembly. Usually, a single connector with a hexagonal nut is used to connect an evaporator with a connecting pipe, or a pipeline is welded to the single connector, so as to achieve an anti-disassembly function. However, the single connector and the hexagonal nut are easy to loosen, and the connection therebetween does not have the anti-disassembly function. When the anti-disassembly function is realized by welding the single connector to the pipeline, the cost is high and the operation process is complicated.

<CIT> discloses a kind of anti-dismantling union nut, anti-dismantling pipe connection device and air conditioner. The anti-dismantling union nut includes a nut body and a twisting portion, and a twisting portion and the nut body are two individual parts, and the nut body includes a first end for being connected with pipe fitting and a second end for coordinating with the twisting portion. A lateral surface of first end is cylindrical surface, and a lateral surface of second end is generally cylindrical surface. A skewed slot extends along an unscrewing direction and gradually towards an end surface. And an abutting step is formed by an end of the skewed slot along a screwing direction.

<CIT> discloses a disassembly prevention joint include an adapter body and a connector nut, wherein, the adapter body includes a main pipe and a limiting tooth being arranged outside the main pipe. The connector nut is fit with screw-thread of the adapter body, a limiting slot coordinated with limiting tooth is provided on the connector nut, and the limiting tooth has a normal thrust surface"; "a periphery of the adapter body is provided with an annular convex platform <NUM>, and the limiting tooth is arranged on a surface, towards the connector nut, of the annular convex platform. By providing the limiting tooth on the annular convex platform, the processing of the limiting tooth is more convenient.

An anti-disassembly connector is provided in the present invention. An anti-disassembly protrusion is provided on a peripheral wall of the anti-disassembly connector, the anti-disassembly protrusion includes a force receiving surface and a force releasing surface, and the force receiving surface and the force releasing surface are arranged on both sides of the anti-disassembly protrusion along a circumference of the anti-disassembly connector.

The force receiving surface is configured to allow an external tool to assemble the anti-disassembly connector. The force releasing surface is configured to make the external tool to be pushed away by the anti-disassembly connector along an axis of the anti-disassembly connector when the anti-disassembly connector is disassembled by the external tool.

In this way, the anti-disassembly connector provided in the present invention has an anti-disassembly function, and can be fixed to and used in conjunction with a fastener. The external tool may be a wrench (such as a joint wrench or a nut wrench). In a process of mounting the anti-disassembly connector and the fastener with the wrench, the wrench may only generate a screwing torque to the anti-disassembly connector via a force receiving surface along a tightening direction, so as to tighten the fastener and the anti-disassembly connector; but cannot generate a loosening torque to the anti-disassembly connector along an opposite direction to disassemble the fastener and the anti-disassembly connector. In addition, the anti-disassembly protrusion is disposed on the peripheral wall of the anti-disassembly connector, which is more convenient for an operator to quickly sleeve the wrench on the peripheral wall of the anti-disassembly connector, and improve convenience of operation, especially for the anti-disassembly connector with small size. Furthermore, the anti-disassembly protrusion is disposed on the peripheral wall of the anti-disassembly connector, which increases a length of a force arm or a force couple arm of the screwing torque of the wrench to the anti-disassembly connector, so that the operator may finish the tightening between the fastener and the anti-disassembly connector more effortlessly.

In an embodiment, a force receiving edge is defined between an outer circumference surface of the anti-disassembly protrusion and force receiving surface, and the external tool is capable of clamping the force receiving edge and applying torque on the force receiving edge.

In this way, since the external tool is capable of clamping the force receiving edge and applying torque on the force receiving edge, the external tool may also be an ordinary wrench, such as an adjustable wrench or a flat wrench. When the ordinary wrench screws the anti-disassembly connector along a direction from the force receiving surface toward the outer circumference surface of the anti-disassembly protrusion, the ordinary wrench may be clamped at a side of the force receiving edge near the force receiving surface. At this moment, the ordinary wrench may screw the anti-disassembly connector and thus tighten the anti-disassembly connector. When the ordinary wrench screws the anti-disassembly connector along a direction from the outer circumference surface of the anti-disassembly protrusion toward the force receiving surface, a direction of force applied by the ordinary wrench is parallel to a tangent plane of the outer circumference surface of the anti-disassembly protrusion at the force receiving edge. Therefore, the ordinary wrench cannot apply force on the anti-disassembly protrusion, i.e., the ordinary wrench cannot loosen the anti-disassembly connector, thus achieving an anti-disassembly effect.

In an embodiment, the force receiving edge is parallel to the axis of the anti-disassembly connector.

In this way, when the ordinary wrench is clamped at the force receiving edge and the ordinary wrench screws the anti-disassembly connector along a direction from the force receiving surface toward the outer circumference surface of the anti-disassembly protrusion, the direction of force applied by the ordinary wrench may be perpendicular to the axis of the anti-disassembly connector. At this moment, a distance between the force applied by the ordinary wrench on the force receiving edge and the axis of the anti-disassembly connector may be maximum. It is known from common knowledge of physics that at this moment, a torque defined between the force applied by the ordinary wrench on the force receiving edge and the axis of the anti-disassembly connector can be maximum, and tightening effect of the anti-disassembly connector may be the best.

In an embodiment, the force receiving surface is a plane, and the force receiving surface is parallel to a plane of the axis of the anti-disassembly connector.

In this way, the force receiving surface may be in close contact with a corresponding mating surface of the joint wrench, and the force of the joint wrench applied on the force receiving surface may be perpendicular to an axis of a through hole. When the nut wrench and the joint wrench are used to connect the anti-disassembly connector to the fastener, the joint wrench may provide an abutting torque to the anti-disassembly connector along a circumference of the anti-disassembly connector without generating a component of force along the axis of the anti-disassembly connector, so that the anti-disassembly connector and the fastener may be screwed together quickly and effortlessly.

In an embodiment, an intersection line is defined between the force receiving surface and an outer circumference surface of the anti-disassembly connector, and the force receiving surface is perpendicular to a tangent plane of the outer circumference surface of the anti-disassembly connector at the intersection line.

In this way, the force receiving surface may be perpendicular to the tangent plane of a column body at the intersection line, which facilitates tightening of the anti-disassembly connector.

In an embodiment, the force releasing surface is selected from an inclined surface, a curved surface, or a concave surface.

In this way, the force releasing surface may be an inclined surface, a curved surface, or a concave surface. Therefore, a shape of the force releasing surface may be smoother, which may further reduce a friction coefficient between the force releasing surface and the joint wrench, thus avoiding a relative movement between the joint wrench and the force releasing surface from jamming or stalling. In addition, the smoother force releasing surface can facilitate moving of the external tool, so that the external tool will not apply a force on the anti-disassembly connector to loosen the anti-disassembly connector along an opposite direction, thereby achieving an anti-disassembly function of the anti-disassembly connector.

In an embodiment, the force releasing surface is smoothly engaged with the outer circumference surface of the anti-disassembly connector.

In this way, the external tool cannot be clamped between the force releasing surface and the outer circumference surface of the anti-disassembly connector to loosen the anti-disassembly connector, which further improves force releasing efficiency of the force releasing surface of the anti-disassembly connector, and make it more difficult to disassemble the anti-disassembly connector.

In an embodiment, the anti-disassembly connector includes a base. The base is located at an end of the anti-disassembly connector or on the peripheral wall of the anti-disassembly connector. The base includes a first end surface relatively near the anti-disassembly protrusion, and the first end surface is smoothly engaged with the force releasing surface.

In this way, the base may improve firmness of the connection between the anti-disassembly protrusion and the anti-disassembly connector. A smooth surface defined by the first end surface and the force releasing surface may significantly reduce the friction coefficient between the smooth surface and the joint wrench, avoid obviously crease or protrusion on the force releasing surface, and can prevent an abutting force or a static friction from generation between the anti-disassembly connector and the force releasing surface. Thus, the anti-disassembly effect of the anti-disassembly connector can be improved.

In an embodiment, an end of the anti-disassembly connector is provided with a male thread portion, the anti-disassembly connector further includes a column body, the male thread portion is located at an end of the column body, the anti-disassembly protrusion is located at the other end of the column body away from the male thread portion, and the base is connected to a side of the anti-disassembly protrusion away from the male thread portion. Optionally, a through hole is disposed in the anti-disassembly connector, and a female thread portion is located in the through hole.

In this way, the anti-disassembly connector can be threadedly connected to the fastener.

In an embodiment, a plurality of anti-disassembly protrusions are distributed along a circumference of the anti-disassembly connector, and the force receiving surface and the force releasing surface are alternately distributed along the circumference of the anti-disassembly connector.

In this way, the number of the force receiving surface of the anti-disassembly connector on which the external tool acts is increased, so that the external tool can apply force on more points of force when the external tool tightens the anti-disassembly connector, which improves stability of the external tool. In addition, the number of the force releasing surface is increased accordingly, improving releasing efficiency of the anti-disassembly connector for the external tool.

In an embodiment, the anti-disassembly protrusion includes a first protrusion and a second protrusion, which are rotationally and symmetrically disposed around the axis of the anti-disassembly connector as a center.

In this way, the force receiving surface of the first protrusion and the force receiving surface of the second protrusion are located on the same plane, which facilitates the external tool acting on the first protrusion and the second protrusion at the same time to tighten the anti-disassembly connector.

In an embodiment, a maximum outer diameter of the anti-disassembly protrusion is a maximum diameter of the anti-disassembly connector.

In this way, one skilled in the art may use the external tool to grip the outer circumference surface of the anti-disassembly protrusion, so as to forcibly disassemble the anti-disassembly connector and the fastener without damaging the force receiving surface or the force releasing surface of the anti-disassembly protrusion. Thus, the anti-disassembly connector can be repeatedly used.

In an embodiment, a distance between the force receiving edge of the first protrusion and the force receiving edge of the second protrusion is a maximum outer diameter of the anti-disassembly connector.

In this way, when the distance between the force receiving edge of the first protrusion and the force receiving edge of the second protrusion is a maximum outer diameter of the anti-disassembly connector, the ordinary wrench may be in contact with and clamp the force receiving edge, and the operator may use the ordinary wrench to mount the anti-disassembly connector more conveniently.

An anti-disassembly connection assembly is further provided in the present invention. The anti-disassembly connection assembly includes a fastener and the anti-disassembly connector. Either of the anti-disassembly connector and the fastener includes a female thread portion, the other one includes a male thread portion, and the male thread portion is threadedly connected to the female thread portion.

The anti-disassembly connection assembly provided in the present invention has an anti-disassembly function. The operator may only tighten the fastener and the anti-disassembly connector with a nut wrench matched with the fastener and a joint wrench matched with the anti-disassembly connector, but cannot loosen the fastener and the anti-disassembly connector.

In an embodiment, the anti-disassembly protrusion is located at an end of the anti-disassembly connector, and the other end of the anti-disassembly connector provided with the male thread portion, and the force releasing surface faces the male thread portion. An assembly hole is disposed in the fastener, the female thread portion is disposed in the assembly hole, and the female thread portion matches with the male thread portion of the anti-disassembly connector.

In an embodiment, the anti-disassembly connector is provided with a through hole, and the through hole is provided with the female thread portion. An end of the fastener protruding outwards along an axis thereof is provided with the male thread portion, and the male thread portion of the fastener extends into the through hole, and is threadedly connected to the anti-disassembly connector.

In this way, a more stable and reliable threaded connection may be formed between the anti-disassembly connector and the fastener.

An air conditioner provided in the present invention includes a first pipe, a second pipe, and the anti-disassembly connection assembly. The first pipe and the second pipe are connected to the anti-disassembly connector and the fastener, respectively.

In this way, assembly complexity of the air conditioner may be greatly reduced and assembly efficiency of the air conditioner may be improved.

In an embodiment, the first pipe is fixed to the anti-disassembly connector, and an end of the second pipe is clamped between the anti-disassembly connector and the fastener.

In this way, the assembly complexity of the air conditioner may be greatly reduced and the assembly efficiency of the air conditioner may be improved.

In an embodiment, a peripheral wall of an end of the anti-disassembly connector is provided with a first taper-shaped surface, an assembly hole of the fastener is provided with a second taper-shaped surface, correspondingly, and the end of the second pipe is provided with a taper-shaped clamping portion. The taper-shaped clamping portion is clamped between the first taper-shaped surface and the second taper-shaped surface.

In this way, a contact area between the taper-shaped clamping portion and the anti-disassembly connector and a contact area between the taper-shaped clamping portion and the fastener are increased, which facilitates improving assembly stability of the air conditioner.

In an embodiment, the anti-disassembly connector or the fastener is provided with a positioning section. The positioning section abuts against the first pipe and is configured to locate the first pipe; or, the positioning section abuts against the second pipe and is configured to locate the second pipe.

In this way, an inner wall surface of the positioning section may abut against an peripheral wall surface of either of the first pipe and the second pipe, thereby limiting a movement of either of the first pipe and the second pipe in the through hole and preventing either of the first pipe and the second pipe from sliding out from the through hole.

In an embodiment, the positioning section is provided with a taper-shaped positioning surface, the first pipe or the second pipe is provided with a flared portion at an end, and the taper-shaped positioning surface abuts against a peripheral wall of the flared portion.

In this way, it can ensure that the first pipe or the second pipe relative to the anti-disassembly connector or the fastener may be coaxially disposed, and positioning effect of the first pipe or the second pipe may be more reliable, and the first pipe or the second pipe may be hardly shake. In addition, the positioning section may abuts against the peripheral wall of the flared portion, so that the anti-disassembly connection assembly may have a better sealing effect and prevent refrigerant from leaking out of the through hole.

In the figures, <NUM> represents an anti-disassembly connector; <NUM> represents a column body; <NUM> represents a through hole; <NUM> represents a positioning section; <NUM> represents an anti-disassembly protrusion; <NUM> represents a force receiving surface; <NUM> represents a force receiving edge; <NUM> represents an intersection line; <NUM> represents a force releasing surface; <NUM> represents a first protrusion; <NUM> represents a second protrusion; <NUM> represents a male thread portion; <NUM> represents a base; <NUM> represents a first taper-shaped surface; <NUM> represents an anti-disassembly connection assembly; <NUM> represents a fastener; <NUM> represents an assembly hole; <NUM> represents a female thread portion; <NUM> represents a second taper-shaped surface; <NUM> represents a first pipe; <NUM> represents a second pipe; <NUM> represents a taper-shaped clamping portion; <NUM> represents a sealing ring.

In order to make technical solutions in the present invention clearly and completely described, the present invention is described in further detail hereinafter with reference to the accompanying drawings. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by one skilled in the art without making creative labor fall within the scope of protection of the present invention.

It should be noted that when a component is considered to be "arranged" on another component, it may be directly arranged on the other component or an intervening component may be presented. When a component is considered to be "disposed" on another component, it may be directly disposed on the other component or an intervening component may be presented at the same time. When a component is considered to be "fixed" to another component, it may be directly fixed to the other component or an intervening component may be presented at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which the present invention pertains. The terminology used in the description of the present invention is only for the purpose of describing specific embodiments and is not intended to limit the invention. As used herein, the term "and/or" includes any and all combinations of one or more associated listed items.

An anti-disassembly connector <NUM> is provided in the present invention. The anti-disassembly connector <NUM> is disposed in an indoor unit of a split air conditioner, and the anti-disassembly connector <NUM> is configured to be connected with an evaporator and a connecting pipe. It may be understood that in other embodiments, the anti-disassembly connector <NUM> may also be applied in other types of connection situations.

Referring to <FIG>, in the present invention, an anti-disassembly protrusion <NUM> is provided on a peripheral wall of the anti-disassembly connector <NUM>. The anti-disassembly protrusion <NUM> includes a force receiving surface <NUM> and a force releasing surface <NUM>. The force receiving surface <NUM> and the force releasing surface <NUM> are arranged on both sides of the anti-disassembly protrusion <NUM> along a circumference of the anti-disassembly connector <NUM>. The force receiving surface <NUM> is configured to allow an external tool to mount the anti-disassembly connector <NUM>. The force releasing surface <NUM> is configured to make the external tool to be pushed away by the anti-disassembly connector <NUM> along an axis of the anti-disassembly connector <NUM> when the anti-disassembly connector <NUM> is disassembled by the external tool.

Referring to <FIG>, in an embodiment, the anti-disassembly connector <NUM> includes an anti-disassembly joint. The anti-disassembly joint is substantially in a shape of pipe, and provided with a through hole <NUM> configured for a first pipe <NUM> to extend into. The anti-disassembly joint is used in conjunction with a fastener, a through hole <NUM> is disposed in the fastener for a second pipe <NUM> to extend into. The anti-disassembly joint is threadedly connected with the fastener. It may be understood that in other embodiments, the anti-disassembly connector <NUM> may also be an anti-disassembly nut, even the fastener and a pipe joint are provided with an anti-disassembly structure.

Specifically, the anti-disassembly connector <NUM> includes a column body <NUM>. The peripheral wall of the column body <NUM> of the anti-disassembly connector <NUM> extending and protruding in a direction away from the axis of the anti-disassembly connector <NUM> is defined as the anti-disassembly protrusion <NUM>. In this way, the anti-disassembly protrusion <NUM> may be firmer on the anti-disassembly connector <NUM>.

In an embodiment, a force receiving edge <NUM> is defined between outer circumference surface of the anti-disassembly protrusion <NUM> and the force receiving surface <NUM>. The external tool capable of clamping the force receiving edge <NUM> and applying torque on the force receiving edge.

In practical applications, the anti-disassembly connector <NUM> is threadedly connected to a fastener <NUM>. The external tool may be a joint wrench or a nut wrench, or an ordinary wrench, such as an adjustable wrench or a flat wrench.

For example, the external tool includes the joint wrench that matches with the anti-disassembly protrusion <NUM> and the peripheral wall of the anti-disassembly connector <NUM>, and further includes the nut wrench that is configured to clamp the fastener <NUM>. The peripheral wall of the anti-disassembly connector <NUM> extending into the joint wrench is a surface of revolution, which facilitates rotation of joint wrench by the operator to apply a screwing torque to the anti-disassembly connector <NUM>. When the joint wrench is sleeved on the anti-disassembly connector <NUM>, the joint wrench is rotated to contact with the force receiving surface <NUM> or the force releasing surface <NUM>. The joint wrench may generate a force or a component of force perpendicular to a radial direction of a cross section of the anti-disassembly connector <NUM>, i.e., an abutting force applied on the force receiving surface <NUM>, and thus the joint wrench and the force receiving surface <NUM> may abut against each other. The force releasing surface <NUM> may generate a component of force to the joint wrench along the axis of the anti-disassembly connector <NUM> to further rotate the joint wrench. Since it is hard to generate an abutting force or static friction force great enough between the joint wrench and the force releasing surface <NUM>, the joint wrench may move relative to the force releasing surface <NUM>, the joint wrench may be pushed away by the force releasing surface from the anti-disassembly connector <NUM> along the axis of the anti-disassembly connector <NUM>.

The external tool configured to apply force to the anti-disassembly connector <NUM> may include the ordinary wrench or the nut wrench. When the ordinary wrench or the nut wrench screws the anti-disassembly connector <NUM> along a direction from the force receiving surface <NUM> toward the outer circumference surface of the anti-disassembly protrusion <NUM>, the ordinary wrench or the nut wrench may be clamped at a side of the force receiving edge <NUM> near the force receiving surface <NUM>. At this moment, the ordinary wrench or the nut wrench may be able to screw the anti-disassembly connector <NUM>, so as to tighten the anti-disassembly connector <NUM>. When the ordinary wrench or the nut wrench screws the anti-disassembly connector <NUM> along a direction from the outer circumference surface of the anti-disassembly protrusion <NUM> toward the force receiving surface <NUM>, a direction of force applied by the ordinary wrench or the nut wrench may be parallel to a tangent plane of the outer circumference surface of the anti-disassembly protrusion <NUM> at the force receiving edge <NUM>, so the ordinary wrench or the nut wrench cannot apply force to the anti-disassembly protrusion <NUM>, i.e., the ordinary wrench or the nut wrench cannot loosen the anti-disassembly connector <NUM>, thus achieving an anti-disassembly effect.

When the joint wrench is chosen to mount the anti-disassembly connector <NUM>, a mounting process of the anti-disassembly connector <NUM> and the fastener <NUM> is as follows. Firstly, the anti-disassembly connector <NUM> is threadedly connected with the fastener <NUM> by the operator, and the fastener <NUM> is clamped by the nut wrench. Then the anti-disassembly connector <NUM> is matched with the joint wrench, and either of the joint wrench and the nut wrench is rotated along a tightening direction, i.e., a direction along which the joint wrench is attached to and abuts against the force receiving surface <NUM>. At this moment, the nut wrench may apply a tightening torque to the fastener <NUM>, the joint wrench may apply an abutting force to the force receiving surface <NUM>, and the joint wrench may apply the screwing torque to the anti-disassembly connector <NUM>. A direction of the screwing torque may be opposite to that of the tightening torque. With an interaction of the tightening torque and the screwing torque, the fastener <NUM> can be threadedly connected with the anti-disassembly connector <NUM>. At the same time, the nut wrench and the fastener <NUM> are kept in a tightening state, and the joint wrench is rotated along an opposite direction to allow the joint wrench to be in contact with the force releasing surface <NUM>. At this moment, the joint wrench cannot abut against the force releasing surface <NUM> and may slide along the force releasing surface <NUM>, resulting in that the joint wrench cannot generate a loosening torque on the anti-disassembly connector <NUM> opposite to the screwing torque. Eventually, the joint wrench is released by the anti-disassembly protrusion <NUM>, i.e., the joint wrench may only rotate along the tightening direction and generate the screwing torque to the anti-disassembly connector <NUM> by abutting against the force receiving surface <NUM>, so that the anti-disassembly connector <NUM> is threadedly connected to the fastener <NUM>, but the loosening torque cannot be applied to the anti-disassembly connector <NUM> along the opposite direction to loosen and separate the anti-disassembly connector <NUM> and the fastener <NUM>. Therefore, it is not possible to disassemble the anti-disassembly connector <NUM> and the fastener <NUM>.

When the anti-disassembly connector <NUM> is mounted with the ordinary wrench or the nut wrench, a mounting process of the anti-disassembly connector <NUM> and the fastener <NUM> is substantially the same as that described above, except that the ordinary wrench or the nut wrench may be clamped on the force receiving edge <NUM> to apply the screwing torque, but cannot apply the loosening torque via the force receiving edge <NUM>.

The anti-disassembly connector <NUM> provided in the present invention has an anti-disassembly function, and is capable of being fixedly connected to and used in conjunction with a fastener <NUM>. In a process of mounting the anti-disassembly connector <NUM> and the fastener <NUM> with the joint wrench, the nut wrench, or the ordinary wrench, the wrench may only generate the screwing torque to the anti-disassembly connector <NUM> via a force receiving surface <NUM> along the tightening direction, so as to tighten the fastener <NUM> and the anti-disassembly connector <NUM>, but cannot generate the loosening torque to the anti-disassembly connector <NUM> along the opposite direction to disassemble the fastener <NUM> and the anti-disassembly connector <NUM>. In addition, the anti-disassembly protrusion <NUM> may be disposed on the peripheral wall of the anti-disassembly connector <NUM>, which is more convenient for the operator to quickly sleeve the wrench on the peripheral wall of the anti-disassembly connector <NUM>, especially for the anti-disassembly connector <NUM> with small size. Besides, it is convenient for the operator to clamp the ordinary wrench or the nut wrench on the force receiving edge <NUM>, thereby improving convenience of operation. Furthermore, the anti-disassembly protrusion <NUM> is disposed on the peripheral wall of the anti-disassembly connector <NUM>, which may increase a length of a force arm or a force couple arm of the screwing torque of the wrench to the anti-disassembly connector <NUM>, so that the operator may finish the tightening between the fastener <NUM> and the anti-disassembly connector <NUM> more effortlessly.

Alternatively, in an embodiment, the peripheral wall of the anti-disassembly connector <NUM> may be in a shape of furstum of cone. An outer diameter of the anti-disassembly connector <NUM> may increase along a direction along which the joint wrench approaches and sleeves on the anti-disassembly connector <NUM>. It may be understood that in other embodiments, the peripheral wall of the anti-disassembly connector <NUM> may be surface of revolution in other shapes, such as a cylindrical surface, or a combination of a cylindrical surface and a furstum of cone.

In the present invention, the tightening direction may be clockwise, and a rotational direction of the force releasing surface <NUM> may be anticlockwise. In other embodiments, the tightening direction may be anticlockwise, and the rotational direction of the force releasing surface <NUM> may be clockwise.

In an embodiment, the force receiving edge <NUM> may be parallel to an axis of the anti-disassembly connector <NUM>.

In this way, when the ordinary wrench is clamped at the force receiving edge <NUM> an screws the anti-disassembly connector <NUM> along the direction from the force receiving surface <NUM> toward the outer circumference surface of the anti-disassembly protrusion <NUM>, the direction of force applied by the ordinary wrench may be perpendicular to the axis of the anti-disassembly connector <NUM>. At this moment, a distance between the force applied by the ordinary wrench on the force receiving edge <NUM> and the axis of the anti-disassembly connector <NUM> may be maximum. It is known from common knowledge of physics that at this moment, a maximum torque defined between the force applied by the ordinary wrench on the force receiving edge <NUM> and the axis of the anti-disassembly connector <NUM> can be maximum, and tightening effect of the anti-disassembly connector may be the best.

In an embodiment, the force receiving surface <NUM> may be a plane, and the force receiving surface <NUM> may be parallel to a plane of the axis of the anti-disassembly connector <NUM>.

In this way, the force receiving surface <NUM> may be in close contact with a corresponding mating surface of the joint wrench, and the force of the joint wrench applied on the force receiving surface <NUM> may be perpendicular to an axis of the through hole <NUM>. When the nut wrench and the joint wrench are used to connect the anti-disassembly connector <NUM> to the fastener <NUM>, the joint wrench may provide an abutting torque to the anti-disassembly connector <NUM> along the circumference of the anti-disassembly connector <NUM> without generating a component of force along the axis of the anti-disassembly connector <NUM>, so that the anti-disassembly connector <NUM> and the fastener <NUM> may be screwed together quickly and effortlessly.

It may be understood that the force receiving surface <NUM> may also be a curved surface, and the force receiving surface <NUM> may be perpendicular to a radial direction of the through hole <NUM>, as long as the joint wrench may match with the anti-disassembly connector <NUM>, and the joint wrench may generate an abutting force or a component of abutting force to the force receiving surface <NUM> perpendicular to the radial direction of the anti-disassembly connector <NUM>, so as to generate the screwing torque to the anti-disassembly connector <NUM>.

In an embodiment, an intersection line is defined between the force receiving surface <NUM> and an outer circumference surface of the column body <NUM>, and the force receiving surface <NUM> may be perpendicular to a tangent plane of the column body <NUM> at the intersection line <NUM>. The force releasing surface <NUM> may be selected from an inclined surface, a curved surface, or a concave surface. The direction of the force applied by the external tool may be perpendicular to the force receiving surface <NUM>, and the force receiving surface <NUM> may be perpendicular to the tangent plane of the column body <NUM> at the intersection line <NUM>, so that the direction of the force applied by the external tool may be parallel to the tangent plane. It is known from common sense that the tangent plane at the intersection line <NUM> may be perpendicular to a curvature radius of the column body <NUM> at the intersection line <NUM>, so that the direction of the force applied by the external tool may be perpendicular to the curvature radius of the column body <NUM> at the intersection line <NUM>. It is known from the physics formula that a relationship among a torque (denoted as M), a length of a force arm (denoted as L), a magnitude of the force (denoted as F) and an angle between the force and the force arm (denoted as A) may be shown as the formula herein: M=L*F*sin A. When the force is perpendicular to the force arm, the torque is the maximum. That is, when the direction of the force applied by the external tool is perpendicular to the curvature radius of the column body <NUM> at the intersection line <NUM>, the torque applied by the external tool may to the anti-disassembly connector <NUM> may be maximum, which facilitates a tightening of the anti-disassembly connector <NUM>. The force releasing surface <NUM> may be an inclined surface, or a curved surface. A shape of the force releasing surface <NUM> may be smoother, which may further reduce a friction coefficient between the force releasing surface <NUM> and the joint wrench, thus avoiding a relative movement between the joint wrench and the force releasing surface <NUM> from jamming or stalling. In addition, the smoother force releasing surface <NUM> can facilitate moving of the external tool, so that the external tool will not apply a force on the anti-disassembly connector <NUM> to loosen the anti-disassembly connector <NUM> along the opposite direction, thereby achieving the anti-disassembly function of the anti-disassembly connector <NUM>.

Optionally, in an embodiment, the force releasing surface <NUM> may be a helical surface centered on the axis of the anti-disassembly connector <NUM>. The force releasing surface <NUM> may be concave along a direction along which the joint wrench is set on the anti-disassembly connector <NUM>, as viewed from a side of the anti-disassembly connector <NUM>.

In this way, the shape of the force releasing surface <NUM> may be smoother, which may further reduce the friction coefficient between the force releasing surface <NUM> and the joint wrench, thus avoiding the movement of joint wrench relative to the force releasing surface <NUM> from jamming or stalling, and achieving the anti-disassembly function of the anti-disassembly connector <NUM> better.

It may be understood that the force releasing surface <NUM> may protrude along the axis of the anti-disassembly connector <NUM>, which is not repeated herein.

In an embodiment, the force releasing surface <NUM> may be smoothly engaged with the outer circumference surface of the anti-disassembly connector <NUM>. In this way, the external tool cannot loosen the anti-disassembly connector <NUM> by clamping between the force releasing surface <NUM> and the outer circumference surface of the anti-disassembly connector <NUM>. The force releasing efficiency of the force releasing surface <NUM> of the anti-disassembly connector <NUM> can be further improved, so that the anti-disassembly connector <NUM> is more difficult to disassemble.

In an embodiment, the anti-disassembly connector <NUM> may further include a base <NUM>. The base <NUM> may be located at an end of the anti-disassembly connector <NUM> or the peripheral wall of the anti-disassembly connector <NUM>. The base <NUM> may include a first end surface relatively near the anti-disassembly protrusion <NUM>, and the first end surface may be smoothly engaged with the force releasing surface <NUM>.

In this way, the base <NUM> may improve firmness of the connection between the anti-disassembly protrusion <NUM> and the anti-disassembly connector <NUM>. A smooth surface defined by the first end surface and the force releasing surface <NUM> may significantly reduce the friction coefficient between the smooth surface and the joint wrench, avoid obviously crease or protrusion on the force releasing surface <NUM>, and can prevent an abutting force or a static friction from generation between the anti-disassembly connector <NUM> and the force releasing surface <NUM>. Thus, the anti-disassembly effect of the anti-disassembly connector <NUM> can be improved.

In an embodiment, the base <NUM> may be located at the end of the anti-disassembly connector <NUM> or the peripheral wall of the anti-disassembly connector <NUM>. The base <NUM> is capable of stopping the external tool and is configured to limit a depth to which the external tool may be sleeved on the anti-disassembly connector <NUM>.

Specifically, in the embodiment, the base <NUM> is capable of stopping the joint wrench and limiting the depth to which the joint wrench may be sleeved on the anti-disassembly connector <NUM>.

In this way, the base <NUM> may limit the joint wrench to further set on the anti-disassembly connector <NUM>, and prevent the joint wrench from colliding and interfering with the fastener <NUM> or other important external components and causing unnecessary damage. In addition, the base <NUM> may enable a part of the joint wrench which matches with the anti-disassembly protrusion <NUM> to keep a maximum mating area with the anti-disassembly connector <NUM>. Therefore, matching between the joint wrench and the anti-disassembly protrusion <NUM> is more reliable in the process of tightening the anti-disassembly connector <NUM> with the fastener <NUM>, thereby preventing the joint wrench from slipping out from the anti-disassembly connector <NUM> and the fastener <NUM>.

In an embodiment, the base <NUM> may be a circular table-shaped structure provided at the end of the anti-disassembly connector <NUM>, and an outer diameter of the base <NUM> may be greater than that of the peripheral wall of the anti-disassembly connector <NUM>. The external tool may be set on the peripheral wall of the anti-disassembly connector <NUM> from an end of the anti-disassembly connector <NUM> that is away from the base <NUM>, and the first end surface may stop an end of the external tool. The force releasing surface <NUM> may be concave along the axis of the anti-disassembly connector <NUM>, so that both the force releasing surface <NUM> and the first end surface can define a smooth surface without crease or protrusion.

In this way, the anti-disassembly effect of the anti-disassembly connector <NUM> may be more outstanding. The smooth surface defined by the first end surface and the force releasing surface <NUM> may significantly reduce the friction coefficient between the smooth surface and the joint wrench, prevent the force releasing surface <NUM> from creasing or protruding significantly, avoid generating abutting force or static friction between the anti-disassembly connector <NUM> and the force releasing surface <NUM>, so as to improve the anti-disassembly effect of the anti-disassembly connector <NUM>.

In an embodiment, a maximum outer diameter of the anti-disassembly protrusion <NUM> may be a maximum diameter of the anti-disassembly connector <NUM>.

In this way, the one skilled in the art may use the external tool to grip the outer circumference surface of the anti-disassembly protrusion <NUM>, so as to forcibly disassemble the anti-disassembly connector <NUM> and the fastener <NUM> without damaging the force receiving surface <NUM> or the force releasing surface <NUM> of the anti-disassembly protrusion <NUM>. Thus, the anti-disassembly connector <NUM> can be repeatedly used.

Furthermore, a distance between the force receiving edge <NUM> of a first protrusion <NUM> and the force receiving edge <NUM> of a second protrusion <NUM> is defined as a maximum outer diameter of the anti-disassembly connector <NUM>.

In this way, when the distance between the force receiving edge <NUM> of the first protrusion <NUM> and the force receiving edge <NUM> of the second protrusion <NUM> is a maximum outer diameter of the anti-disassembly connector <NUM>, the ordinary wrench may be in contact with and clamp the force receiving edge <NUM>, and the operator may use the ordinary wrench to mount the anti-disassembly connector <NUM> more conveniently.

In an embodiment, a plurality of anti-disassembly protrusions <NUM> may be distributed along the circumference of the anti-disassembly connector <NUM>, and the force receiving surface <NUM> and the force releasing surface <NUM> may be alternately distributed along the circumference of the anti-disassembly connector <NUM>.

In this way, the number of the force receiving surface <NUM> of the anti-disassembly connector <NUM> on which the external tool acts may be increased, so that the external tool can apply force on more points of force when the external tool tightens the anti-disassembly connector <NUM>, which improves stability of the external tool. In addition, the number of the force releasing surface <NUM> may be increased accordingly, improving releasing efficiency of the anti-disassembly connector <NUM> for the external tool.

In an embodiment, the anti-disassembly protrusion <NUM> includes the first protrusion <NUM> and the second protrusion <NUM>, which are rotationally and symmetrically disposed around the axis of the anti-disassembly connector <NUM> as a center.

In this way, the force receiving surface <NUM> of the first protrusion <NUM> and the force receiving surface <NUM> of the second protrusion <NUM> may be located on the same plane, which facilitates the external tool acting on the first protrusion <NUM> and the second protrusion <NUM> at the same time to tighten the anti-disassembly connector <NUM>.

In an embodiment, at least two anti-disassembly protrusions <NUM> may be evenly distributed on the peripheral wall of the anti-disassembly connector <NUM> along the circumference of the anti-disassembly connector <NUM>.

In this way, when one anti-disassembly protrusion <NUM> is damaged due to slippage of the joint wrench, etc., the joint wrench may match with the other anti-disassembly protrusion <NUM> without affecting a tightening and mounting of the fastener <NUM> and the anti-disassembly connector <NUM>.

In another aspect, the plurality of anti-disassembly protrusions <NUM> has a plurality of force receiving surfaces <NUM>, which may increase a contact area between the joint wrench and the force receiving surface <NUM>. The joint wrench may abut against the force receiving surface <NUM> more firmly, reducing a risk of the joint wrench slipping off from the anti-disassembly connector <NUM>, and further reducing stress applied on a root of each anti-disassembly protrusion <NUM> near the peripheral wall of the anti-disassembly connector <NUM>. Eventually, a risk of the anti-disassembly protrusion <NUM> breaking or being crushed may be reduced when a great screwing torque is applied to the anti-disassembly connector <NUM> and a greater tightening torque is applied to the fastener <NUM>.

In an embodiment, referring to <FIG>, the through hole <NUM> may be disposed in the anti-disassembly connector <NUM>, and the through hole <NUM> may include a female thread portion <NUM>.

In an embodiment, referring to <FIG>, an end of the anti-disassembly connector <NUM> includes a male thread portion <NUM>. The male thread portion <NUM> may be located at an end of the column body <NUM>, the anti-disassembly protrusion <NUM> may be located at the other end of the column body <NUM> away from the male thread portion <NUM>, and the base <NUM> may be connected to a side of the anti-disassembly protrusion <NUM> away from the male thread portion <NUM>. In this way, the anti-disassembly protrusion <NUM> may be more firmly disposed on the anti-disassembly connector <NUM>.

An anti-disassembly connection assembly <NUM> is further provided in the present invention. The anti-disassembly connection assembly <NUM> includes a fastener <NUM> and the anti-disassembly connector <NUM>. Either of the anti-disassembly connector <NUM> and the fastener <NUM> includes the female thread portion <NUM> provided with a female threaded hole, i.e., the through hole <NUM>, the other one includes a male thread portion <NUM>, and the male thread portion <NUM> is threadedly connected to the female thread portion <NUM>.

The anti-disassembly connection assembly <NUM> provided in the present invention has an anti-disassembly function. The operator may only tighten the fastener <NUM> and the anti-disassembly connector <NUM> with a nut wrench matched with the fastener <NUM> and a joint wrench matched with the anti-disassembly connector <NUM>, but cannot loosen the fastener <NUM> and the anti-disassembly connector <NUM>.

In the embodiments referring to <FIG>, the through hole <NUM> may be disposed in the anti-disassembly connector <NUM>, the female thread in the through hole <NUM> may be defined as the female thread portion <NUM>, an end of the fastener <NUM> protruding outwards along an axis thereof is define as the male thread portion <NUM>, and the fastener <NUM> may extend into the through hole <NUM> and be threadedly connected to the anti-disassembly connector <NUM> via the male thread portion <NUM>.

In this way, a more stable and reliable threaded connection may be formed between the anti-disassembly connector <NUM> and the fastener <NUM>.

Specifically, in the embodiment, the anti-disassembly connector <NUM> may be an anti-disassembly joint, the fastener <NUM> may be a fixing member. The anti-disassembly joint may be threadedly connected to the fixing member. In some embodiments, the anti-disassembly connector <NUM> may also be an anti-disassembly nut, the fastener <NUM> may be a pipe joint. In some embodiments, both the fastener <NUM> and the pipe joint can be provided with an anti-disassembly structure, i.e., both the peripheral wall of the anti-disassembly connector <NUM> and the peripheral wall of the fastener <NUM> can be provided with the anti-disassembly protrusion <NUM>.

Furthermore, after the fastener <NUM> is mounted and fixed with the anti-disassembly connector <NUM>, a diameter of the anti-disassembly connector <NUM> is a maximum diameter of the anti-disassembly connection assembly <NUM>.

It should be noted that in the embodiment, the diameter of the anti-disassembly connector <NUM> may refer to a maximum diameter of each parts of the anti-disassembly connector <NUM>. For example, the diameter of the anti-disassembly connector <NUM> refers to the maximum outer diameter of the anti-disassembly protrusion <NUM>, but not the diameter of the peripheral wall of the anti-disassembly connector <NUM>. When the anti-disassembly connector <NUM> further includes the base <NUM>, the diameter of the anti-disassembly connector <NUM> may refer to the outer diameter of the base <NUM>.

In this way, one skilled in the art may use the external tool to grip the outer portion of the anti-disassembly connector <NUM>, so as to forcibly disassemble the anti-disassembly connector <NUM> and the fastener <NUM>. The one skilled in the art may use the external tool to grip a position of the anti-disassembly connector <NUM> having a maximum diameter, preventing the external tool from crushing other elements of the anti-disassembly connection assembly <NUM>.

In the embodiments referring to <FIG>, the anti-disassembly protrusion <NUM> may be located at an end of the anti-disassembly connector <NUM>, and the other end of the anti-disassembly connector <NUM> may be provided with a male thread portion <NUM>, and the force releasing surface <NUM> may face the male thread portion <NUM>. An assembly hole <NUM> may be disposed in the fastener <NUM>, a female thread portion <NUM> may be disposed in the assembly hole <NUM>, and the female thread portion <NUM> may match with the male thread portion <NUM> of the anti-disassembly connector <NUM>.

In a process of mounting the anti-disassembly connection assembly <NUM>, an end of the anti-disassembly connector <NUM> provided with the male thread portion <NUM> may extend into the assembly hole <NUM> of the fastener <NUM>, and the fastener <NUM> may be threadedly connected to the anti-disassembly connector <NUM> by matching the female thread portion <NUM> with the male thread portion <NUM>. The female thread portion <NUM> and the male thread portion <NUM> may be processed in a mature and simple way, thus reducing difficulty of processing the anti-disassembly connection assembly <NUM> and increasing productivity of the anti-disassembly connection assembly <NUM>.

In the embodiment, the force releasing surface <NUM> may face the male thread portion <NUM>, and the force receiving surface <NUM> and the force releasing surface <NUM> may be disposed at two sides of the anti-disassembly protrusion <NUM> along the circumference of the anti-disassembly connector <NUM>. In the process of mounting the anti-disassembly connector <NUM>, the external tool may act on the force receiving surface <NUM> of the anti-disassembly protrusion <NUM>, enabling the anti-disassembly connector <NUM> to match with the external tool and rotate along a direction (anticlockwise or clockwise), and finally mount the anti-disassembly connector <NUM> with the fastener <NUM>. When the anti-disassembly connector <NUM> needs to be disassembled, the anti-disassembly connector <NUM> may be rotated along an opposite direction to that in the mounting process. At this moment, due to effect of the force releasing surface <NUM>, when the anti-disassembly connector <NUM> is loosened in the opposite direction with the external tool, external tool may be raised by the force releasing surface <NUM>, making the external tool cannot be stressed, and the anti-disassembly connector <NUM> cannot be loosened in the opposite direction. Therefore, the anti-disassembly function of the anti-disassembly connector <NUM> can be achieved merely by disposing the anti-disassembly protrusion <NUM>, and the force receiving surface <NUM> and the force releasing surface <NUM> disposed on the anti-disassembly protrusion <NUM>. The structure of the above anti-disassembly connector <NUM> is simple and easy to assemble, which greatly reduces the cost of using the air conditioner. Because the force releasing surface <NUM> faces the male thread portion <NUM>, it further increases difficulty of disassembling the anti-disassembly connector <NUM>.

The anti-disassembly connection assembly <NUM> provided in the present invention has an anti-disassembly function. The anti-disassembly connector <NUM> can be non-removably connected to the fastener <NUM>. The operator may merely tighten the fastener <NUM> with the anti-disassembly connector <NUM> by the nut wrench and the joint wrench, but cannot loosen the fastener <NUM> and the anti-disassembly connector <NUM>. In addition, the anti-disassembly protrusion <NUM> may be disposed on the peripheral wall of the anti-disassembly connector <NUM>, which is more convenient for the operator to quickly put the joint wrench on the peripheral wall of the anti-disassembly connector <NUM>, improving convenience of operation, especially for the anti-disassembly connector <NUM> with small size. Furthermore, the anti-disassembly protrusion <NUM> is disposed on the peripheral wall of the anti-disassembly connector <NUM>, which may increase the length of the force arm or the force couple arm of the screwing torque of the joint wrench to the anti-disassembly connector <NUM>, so that the operator may finish the connection between the fastener <NUM> and the anti-disassembly connector <NUM> more effortlessly.

An air conditioner provided in the present invention includes a first pipe <NUM>, a second pipe <NUM>, and the anti-disassembly connection assembly <NUM>. The first pipe <NUM> and the second pipe <NUM> are connected to the anti-disassembly connector <NUM> and the fastener <NUM> respectively. In this way, assembly complexity of the air conditioner may be greatly reduced and assembly efficiency of the air conditioner may be improved.

When the air conditioner is mounted, the first pipe <NUM> may be fixed to the anti-disassembly connector <NUM>, and an end of the second pipe <NUM> may be clamped between the anti-disassembly connector <NUM> and the fastener <NUM>. Therefore, the end of the second pipe <NUM> may be mounted in an assembly chamber of the fastener <NUM>, then the anti-disassembly connector <NUM> may be mounted with the fastener <NUM>, so as to assemble the first pipe <NUM> with the second pipe <NUM>. In this way, the assembly complexity of the air conditioner may be greatly reduced and the assembly efficiency of the air conditioner may be improved.

In an embodiment, referring to <FIG>, a sealing ring <NUM> may be disposed between the anti-disassembly connector <NUM> and the fastener <NUM>. The sealing ring <NUM> may be sleeved on an end of the anti-disassembly connector <NUM> near the second pipe <NUM>. In this way, the sealing ring <NUM> may prevent fluid medium from leaking from the second pipe <NUM>.

Furthermore, the air conditioner may further include an indoor unit of air conditioner and an outdoor unit of air conditioner. The first pipe <NUM> may be connected to the indoor unit of air conditioner, and the second pipe <NUM> may be connected to the outdoor unit of air conditioner.

In an embodiment, the anti-disassembly connector <NUM> or the fastener <NUM> may be provided with a positioning section <NUM>, and the positioning section <NUM> may abut against either of the first pipe <NUM> and the second pipe <NUM> and is configured to locate the first pipe <NUM> or the second pipe <NUM>.

Specifically, in the embodiments referring to <FIG>, the through hole <NUM> may be disposed in the anti-disassembly connector <NUM>, and the female thread portion <NUM> and the positioning section <NUM> connected with each other may be disposed in the through hole <NUM>. An end of the fastener <NUM> protruding outwards along an axis thereof is define as a male thread portion <NUM>, and the fastener <NUM> may extend into the through hole <NUM> via the male thread portion <NUM> and be threadedly connected to the anti-disassembly connector <NUM>. A maximum outer diameter of the first pipe <NUM> or the second pipe <NUM> extending into the through hole <NUM> may be greater than a minimum inner diameter of the positioning section <NUM>, and the first pipe <NUM> or the second pipe <NUM> may move in the through hole <NUM> until the positioning section <NUM> abuts against an peripheral wall of either of the first pipe <NUM> and the second pipe <NUM>. Therefore, the positioning section <NUM> may limit the movement of the first pipe <NUM> or the second pipe <NUM> along a direction of extending into the through hole <NUM> and the first pipe <NUM> or the second pipe <NUM> leaving the through hole <NUM>. In the embodiments referring to <FIG>, the positioning section <NUM> may be disposed on the fastener <NUM>, and a positioning principle may be substantially the same as that described above and not be repeated herein.

In this way, the more stable and reliable threaded connection may be formed between the anti-disassembly connector <NUM> and the fastener <NUM>. An inner wall surface of the positioning section <NUM> may abut against an peripheral wall surface of either of the first pipe <NUM> and the second pipe <NUM>, thereby limiting the movement of either of the first pipe <NUM> and the second pipe <NUM> in the through hole <NUM> and preventing either of the first pipe <NUM> and the second pipe <NUM> from sliding out from the through hole <NUM>.

Furthermore, referring to <FIG>, the positioning section <NUM> may be provided with a taper-shaped positioning surface, the first pipe <NUM> or the second pipe <NUM> may be provided with a flared portion at an end, and the taper-shaped positioning surface may abut against an peripheral wall of the flared portion when the first pipe <NUM> or the second pipe <NUM> extends into the through hole <NUM>.

Specifically, in the embodiment, a side of the positioning section <NUM> with a smaller inner diameter may be near an end of the anti-disassembly connector <NUM>. Accordingly, the flared portion may be disposed at the end of the first pipe <NUM> or the second pipe <NUM> extending into the through hole <NUM>. An peripheral wall of the flared portion may be tapered-shaped and abut against the inner wall of the positioning section <NUM>. When the fastener <NUM> is mounted with the anti-disassembly connector <NUM>, the male thread portion <NUM> of the fastener <NUM> may extend into the through hole <NUM> and press the flared portion, so that the flared portion may be limited between the male thread portion <NUM> and the inner wall surface of the positioning section <NUM>, thereby achieving the positioning of the first pipe <NUM> or the second pipe <NUM> with the positioning section <NUM>.

In this way, it can ensure that the first pipe <NUM> or the second pipe <NUM> relative to the anti-disassembly connector <NUM> or the fastener <NUM> may be coaxially disposed , and positioning effect of the first pipe <NUM> or the second pipe <NUM> may be more reliable, and the first pipe <NUM> or the second pipe <NUM> may be hardly shake. In addition, the positioning section <NUM> may abuts against the peripheral wall of the flared portion, so that the anti-disassembly connection assembly <NUM> may have a better sealing effect and prevent refrigerant from leaking out of the through hole <NUM>.

It may be understood that in other embodiments, the positioning section <NUM> may be a hole in a shape of step or other shapes. Accordingly, the flared portion may also be a surface of revolution in other shapes. For example, such as the flared portion may also be a reducer section defined by the end of the first pipe <NUM> or the second pipe <NUM> protruding along a radial direction thereof. When the fastener <NUM> is mounted with the anti-disassembly connector <NUM>, the flared portion may still be limited between the male thread portion <NUM> and the inner wall surface of the positioning section <NUM>, thereby positioning the first pipe <NUM> or the second pipe <NUM>.

Claim 1:
An anti-disassembly connection assembly, comprising a fastener and the anti-disassembly connector (<NUM>),
wherein either of the anti-disassembly connector (<NUM>) and the fastener comprises a female thread portion (<NUM>), the other one comprises a male thread portion (<NUM>), and the female thread portion (<NUM>) is threadedly connected to the male thread portion (<NUM>),
wherein the anti-disassembly connector (<NUM>) comprises an anti-disassembly protrusion (<NUM>) disposed on a peripheral wall of the anti-disassembly connector (<NUM>), wherein the anti-disassembly protrusion (<NUM>) comprises a force receiving surface (<NUM>) and a force releasing surface, and the force receiving surface (<NUM>) and the force releasing surface are arranged on both sides of anti-disassembly protrusion (<NUM>) along a circumference of the anti-disassembly connector (<NUM>); and
the force receiving surface (<NUM>) is configured to allow an external tool to assemble the anti-disassembly connector (<NUM>), and
the force releasing surface is configured to make the external tool to be pushed away by the anti-disassembly connector (<NUM>) along an axis of the anti-disassembly connector (<NUM>) when the anti-disassembly connector (<NUM>) is disassembled by the external tool,
characterized in that
a maximum outer diameter of the anti-disassembly protrusion (<NUM>) is a maximum diameter of the anti-disassembly connector (<NUM>), and
the maximum diameter of the anti-disassembly connector (<NUM>) is a maximum diameter of the anti-disassembly connection assembly (<NUM>).