CN213018176U - Prevent tearing open connecting piece and prevent tearing open connecting piece subassembly - Google Patents

Abstract

The utility model provides a prevent tearing open connecting piece and prevent tearing open connecting piece subassembly. The periphery wall of the anti-dismantling connecting piece protrudes outwards and forms an anti-dismantling lug, the anti-dismantling lug is provided with a stop surface and a sliding surface, the stop surface is used for installing the anti-dismantling connecting piece for an external tool, and when the sliding surface enables the external tool to dismantle the anti-dismantling connecting piece, the anti-dismantling connecting piece is pushed away from the external tool along the axial direction of the anti-dismantling connecting piece. Therefore, the anti-disassembly connecting piece provided by the utility model has the anti-disassembly function, and can be matched and connected with the fixing piece for use; in addition, the anti-disassembly bump is arranged on the outer peripheral wall of the anti-disassembly connecting piece, so that an operator can conveniently and quickly sleeve the joint wrench on the outer peripheral wall of the anti-disassembly connecting piece, and the operation convenience is improved; in addition, the anti-disassembly convex block is arranged on the peripheral wall of the anti-disassembly connecting piece, the force arm or the length of the force couple arm of the joint wrench to the screwing torque of the anti-disassembly connecting piece is increased, and the operator can complete the screwing of the fixing piece and the anti-disassembly connecting piece more labor-saving.

Description

Prevent tearing open connecting piece and prevent tearing open connecting piece subassembly

Technical Field

The utility model relates to a coupling technical field especially relates to a prevent tearing open connecting piece and prevent tearing open connecting piece subassembly.

Background

The anti-dismantling connecting piece is arranged on an indoor unit of the split air-conditioning equipment and is used for connecting the evaporator and the connecting pipe. The existing indoor unit of split air-conditioning equipment requires the use of a non-detachable joint so as to ensure the sealing property inside the indoor unit and prevent the leakage of a refrigerant caused by the mistaken disassembly. Usually, the evaporator and the connecting pipe are connected in a way of matching a single joint and a hexagon nut, or a way of welding a pipeline and the single joint is adopted, so that the anti-dismantling function is realized. However, the single joint and the hexagonal nut are easy to loosen, and the connection of the single joint and the hexagonal nut does not have the anti-disassembly function; and the disassembly prevention is realized by welding the single joint and the pipeline, the cost is higher, and the operation process is complex.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for an improved tamper-evident connector and a tamper-evident connector assembly.

The utility model provides a prevent tearing open connecting piece, the periphery wall of preventing tearing open connecting piece is outside outstanding and form and prevent tearing open the lug, prevents tearing open the lug and is equipped with backstop face and glide plane, and the backstop face is used for supplying the installation of external tool to prevent tearing open the connecting piece, and when the glide plane made the external tool dismantlement prevent tearing open the connecting piece, prevent tearing open the connecting piece and push away from external tool along the axial of preventing tearing open the connecting piece.

The utility model provides a prevent tearing open connecting piece has the anti-disassembly function, can use with mounting fixed connection and supporting. In the process of installing the anti-disassembly connecting piece and the fixing piece by using the joint wrench and the nut wrench, the joint wrench can only generate a screwing torque on the anti-disassembly connecting piece through the stop surface along the fastening direction, so that the fixing piece and the anti-disassembly connecting piece are screwed; the anti-dismantling connecting piece can not be unscrewed in the opposite direction, so that the fixing piece and the anti-dismantling connecting piece can not be dismantled; in addition, the anti-disassembly bump is arranged on the outer peripheral wall of the anti-disassembly connecting piece, so that an operator can conveniently and quickly sleeve the joint wrench on the outer peripheral wall of the anti-disassembly connecting piece, the operation convenience is improved, and the anti-disassembly connecting piece with a smaller size is particularly convenient to sleeve; in addition, the anti-disassembly convex block is arranged on the peripheral wall of the anti-disassembly connecting piece, the force arm or the length of the force couple arm of the joint wrench to the screwing moment of the anti-disassembly connecting piece is increased, so that the operator can complete the screwing of the fixing piece and the anti-disassembly connecting piece more labor-saving.

In one embodiment, the sliding surface is a curved surface and the sliding surface is a concave surface.

So set up, the shape of glide plane is more level and smooth, can further reduce the glide plane and connect the coefficient of friction between the spanner to avoid connecting the spanner and the relative movement jam or jamming between the glide plane, realize better preventing dismantling the anti-disassembly function of connecting piece.

In one embodiment, the stop surface is planar and is parallel to the axial plane of the tamper-evident connector.

So set up, the backstop face can with connect the fitting surface in close contact with that the spanner corresponds, connect the spanner moreover and act on the axial of the power perpendicular to through-hole of backstop face. When the nut wrench and the joint wrench are used for connecting the anti-disassembly connecting piece and the fixing piece, the joint wrench provides a circumferential abutting moment for the anti-disassembly connecting piece, and does not generate a component force along the axial direction of the anti-disassembly connecting piece, so that the anti-disassembly connecting piece and the fixing piece are screwed fast and labor-saving.

In one embodiment, the anti-disassembly connecting piece further comprises a limiting part, the limiting part is located at one end or the outer peripheral wall of the anti-disassembly connecting piece, and the limiting part can stop an external tool and is used for limiting the depth of the anti-disassembly connecting piece sleeved with the external tool.

With the arrangement, the limiting part can limit the joint wrench from being further sleeved with the anti-dismounting connecting piece, so that the joint wrench is prevented from colliding and interfering with the fixing piece or other important external elements to cause unnecessary damage; in addition, the limiting part can ensure that the part of the joint wrench matched with the anti-dismantling lug keeps the maximum matching area with the anti-dismantling connecting piece, so that the screwing process of the anti-dismantling connecting piece and the fixing piece is more reliable, and the anti-dismantling connecting piece and the fixing piece are prevented from slipping.

In one embodiment, the limiting portion includes a first end surface relatively close to the anti-detachment lug, and the first end surface is in smooth transition with the sliding surface.

So set up, the anti-disassembly effect of preventing tearing open the connecting piece is more outstanding, and the smooth surface that first terminal surface and glide plane formed can show reduce with connect the coefficient of friction between the spanner, prevent that obvious turn or arch from appearing in the glide plane, can avoid preventing to tear open producing between connecting piece and the glide plane and support holding power or static friction power to the effect is prevented tearing open in the influence.

In one embodiment, the maximum outer diameter of the tamper-evident projection is the maximum of the diameter of the tamper-evident connector.

So set up, the technical staff can use the outer peripheral face of the lug is prevented tearing open in the centre gripping of outside instrument to force to dismantle and prevent tearing open connecting piece and mounting, and can not damage the glide plane or the backstop face of preventing tearing open the lug, therefore can not influence the repetitious usage who prevents tearing open the connecting piece.

In one embodiment, the number of the anti-dismantling lugs is at least two, and the at least two anti-dismantling lugs are uniformly distributed on the peripheral wall of the anti-dismantling connecting piece along the circumferential direction of the anti-dismantling connecting piece.

So set up, when singly prevent tearing open the lug and damage because of reasons such as joint spanner skids, connect the spanner can prevent tearing open the lug cooperation with another, do not influence the mounting and prevent tearing open the fastening installation of connecting piece.

The utility model also provides a disassembly-prevention connecting piece component, which comprises a fixing piece, a first pipe body, a second pipe body and the disassembly-prevention connecting piece; the anti-dismantling connecting piece is connected with the fixing piece in a matching mode, and the first pipe body and the second pipe body are connected with the anti-dismantling connecting piece and the fixing piece respectively.

The utility model provides a prevent tearing open connecting piece subassembly has the function that prevents to dismantle. The operator can only screw the nut wrench matched with the fixing piece and the joint wrench matched with the anti-disassembly connecting piece, but cannot unscrew the nut wrench and the fixing piece; in addition, the anti-disassembly bump is arranged on the outer peripheral wall of the anti-disassembly connecting piece, so that an operator can conveniently and quickly sleeve the joint wrench on the outer peripheral wall of the anti-disassembly connecting piece, the operation convenience is improved, and the anti-disassembly connecting piece with a smaller size is particularly convenient to sleeve; in addition, the anti-disassembly convex block is arranged on the peripheral wall of the anti-disassembly connecting piece, the force arm or the length of the force couple arm of the screwing moment of the joint wrench to the anti-disassembly connecting piece is increased, so that the operator can complete the connection of the fixing piece and the anti-disassembly connecting piece more laborsavingly.

In one embodiment, one of the anti-detachment connecting piece and the fixing piece comprises a through hole with a threaded section and a positioning section communicated with the threaded section, the other of the anti-detachment connecting piece and the fixing piece comprises a first fixing part provided with external threads, the first fixing part is connected with the threaded section in a matched mode, and the positioning section is abutted against one of the first pipe body or the second pipe body and positions the first pipe body or the second pipe body.

By the arrangement, more stable and reliable threaded connection is formed between the anti-dismounting connecting piece and the fixing piece; the inner wall face of the positioning section can be abutted against the outer wall face of one of the first pipe body or the second pipe body, so that the first pipe body or the second pipe body is limited to move in the through hole, and the first pipe body or the second pipe body is prevented from sliding out of the through hole.

In one embodiment, the positioning section is provided with a conical positioning surface, the end of the first pipe body or the second pipe body is provided with a flared part, and the conical positioning surface abuts against the outer wall of the flared part.

By the arrangement, the coaxiality of the first pipe body or the second pipe body relative to the anti-dismounting connecting piece or the fixing piece can be further ensured, the positioning effect of the first pipe body or the second pipe body is more reliable, and the first pipe body or the second pipe body is not easy to shake; in addition, the positioning section can be attached to the outer wall of the flaring portion, so that the anti-dismantling connecting piece assembly has a better sealing effect, and the leakage of the refrigerant leaked from the through hole is prevented.

Drawings

Fig. 1 is a schematic perspective view of a tamper-evident connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of the tamper evident connector of FIG. 1 from a first perspective;

FIG. 3 is an illustration of the tamper evident connector of FIG. 1 in a second perspective;

fig. 4 is a schematic perspective view of a tamper-evident connector assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of the tamper evident connector assembly of FIG. 4 from a first perspective;

FIG. 6 is a schematic view of the tamper evident connector assembly of FIG. 4 from a second perspective;

FIG. 7 is a schematic view of the tamper evident connector assembly of FIG. 4 from a third perspective.

100. A tamper-evident connector; 10. a through hole; 11. a threaded segment; 12. a positioning section; 20. a tamper-evident projection; 21. a stop surface; 22. a sliding surface; 200. a tamper-evident connector assembly; 210. a fixing member; 211. a first fixed part; 220. a first pipe body; 230. a second tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

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

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of an anti-detachment connection member 100 according to an embodiment of the present invention; FIG. 2 is a schematic view of the tamper evident connector 100 of FIG. 1 from a first perspective; fig. 3 is a schematic view of the tamper evident connector 100 of fig. 1 from a second perspective.

The utility model provides a prevent tearing open connecting piece 100 sets up in split air conditioning equipment's indoor set for connect evaporimeter and connecting pipe. It will be appreciated that in other embodiments, the tamper-evident connector 100 may be used in connection with other types of tamper-evident tubes.

In this embodiment, the tamper-evident connector 100 is a tamper-evident connector and the fastener is a nipple nut. In other embodiments, the anti-detachment connection member 100 may also be an anti-detachment nut, the fixing member may be a pipe joint, and even the pipe joint nut and the pipe joint are provided with anti-detachment structures.

The anti-dismantling connector 100 provided by the utility model is roughly tubular, the outer peripheral wall is a cylindrical surface or a conical table surface, and a through hole 10 is arranged inside the anti-dismantling connector for the first pipe body to extend into; the through hole 10 has a threaded section 11 therein for threaded connection with a fastener, which may be a separate nut fitted in the through hole 10 of the tamper-evident connector 100 or a pipe joint with a nut head.

The existing indoor unit of split air-conditioning equipment requires the use of a non-detachable joint so as to ensure the sealing property inside the indoor unit and prevent the leakage of a refrigerant caused by the mistaken disassembly. Usually, the evaporator and the connecting pipe are connected in a way of matching a single joint and a hexagon nut, or a way of welding a pipeline and the single joint is adopted, so that the anti-dismantling function is realized. However, the single joint and the hexagonal nut are easy to loosen, and the connection of the single joint and the hexagonal nut does not have the anti-disassembly function; and the disassembly prevention is realized by welding the single joint and the pipeline, the cost is higher, and the operation process is complex.

In view of this, the anti-disassembly connecting piece 100 provided by the present invention further includes an anti-disassembly bump 20 formed by protruding outward from the outer circumferential wall of the anti-disassembly connecting piece 100, the anti-disassembly bump 20 is provided with a stop surface 21 and a sliding surface 22, and the stop surface 21 and the sliding surface 22 are respectively located at two sides of the anti-disassembly bump 20 which are deviated from each other; the stop surface 21 is used for an external tool to mount the tamper-proof connector 100, and the sliding surface 22 enables the tamper-proof connector 100 to be pushed away from the external tool along the axial direction of the tamper-proof connector 100 when the external tool is used to remove the tamper-proof connector 100. Specifically, the tamper evidence 20 is formed by an outer peripheral wall of the tamper evidence connector 100 extending, protruding in a direction away from the axis.

In practical application, the anti-tamper connector 100 is partially sleeved with a fixing member, and the part of the fixing member extending into the anti-tamper connector 100 is provided with an external thread section matched with the thread section 11; the external tool includes a joint wrench engaged with the anti-detach projection 20 and the outer circumferential wall of the anti-detach connector 100, and a nut wrench for clamping and fixing the fixing member; the outer peripheral wall of the anti-disassembly connecting piece 100 sleeved on the joint wrench is a revolution surface, so that an operator can rotate the joint wrench to apply a screwing torque to the anti-disassembly connecting piece 100; when the anti-detach connector 100 is coupled to the joint wrench, the joint wrench may be rotated to contact the stop surface 21 or the sliding surface 22. The joint wrench can generate a force or component force perpendicular to the radial direction of the anti-disassembly connecting piece 100, namely an abutting force acting on the stop surface 21, so that the anti-disassembly connecting piece and the stop surface abut against each other; the sliding surface 22 can generate a component force to the joint wrench along the axial direction of the anti-tamper connector 100, and further rotate the joint wrench, because a large abutting force or static friction force is not generated between the joint wrench and the sliding surface 22 enough, the joint wrench will move relative to the sliding surface 22, and the anti-tamper protrusion 20 pushes the joint wrench away from the anti-tamper connector 100 along the axial direction of the anti-tamper connector 100 through the sliding surface 22.

The installation process of the tamper-evident connector 100 with the fastener is as follows: the operating personnel at first stretch into the screw thread section 11 in the through-hole 10 of preventing tearing open connecting piece 100 with the external screw thread section of mounting to use nut spanner to press from both sides tight mounting, then will prevent tearing open connecting piece 100 and joint spanner cooperation, along the fastening direction, the direction that joint spanner and backstop face 21 laminating and support were held promptly, rotate one of joint spanner and nut spanner, nut spanner exerts fastening moment to the mounting this moment, joint spanner has produced the support power to backstop face 21, and then joint spanner has exerted the moment of screwing opposite with above-mentioned fastening moment direction to preventing tearing open connecting piece 100. Under the combined action of the fastening torque and the screwing torque, the fixing piece and the anti-disassembly connecting piece 100 are screwed through the thread section 11; the clamping state between the nut runner and the fixing member is maintained unchanged, the joint runner is rotated in the opposite direction to contact the sliding surface 22, and the joint runner cannot abut against the sliding surface 22 and will slide along the sliding surface 22, so that the joint runner cannot generate a loosening torque opposite to the tightening torque on the anti-removal connecting member 100. Finally, the anti-disassembly wrench is rotated by the anti-disassembly protrusion 20, that is, the anti-disassembly wrench can only rotate in the fastening direction, and the anti-disassembly connection member 100 is screwed by abutting against the stop surface 21, so that the anti-disassembly connection member 100 is fastened to the fixing member by the screw, and the anti-disassembly connection member 100 cannot be unscrewed and separated from the fixing member by applying the unscrewing torque to the anti-disassembly connection member 100 in the opposite direction, so that the anti-disassembly connection member 100 cannot be disassembled from the fixing member.

In this way, the utility model provides a prevent tearing open connecting piece 100 has the anti-disassembly function, can use with mounting fixed connection and supporting. In the process of installing the tamper-evident connection member 100 and the fixing member using the joint wrench and the nut wrench, the joint wrench can generate a tightening torque to the tamper-evident connection member 100 only through the stopper surface 21 in the fastening direction, thereby tightening the fixing member and the tamper-evident connection member 100; the anti-disassembly connecting piece 100 cannot be unscrewed in the opposite direction, so that the fixing piece and the anti-disassembly connecting piece 100 can be disassembled; in addition, the anti-disassembly bump 20 is arranged on the outer peripheral wall of the anti-disassembly connecting piece 100, so that an operator can conveniently and quickly sleeve the connector wrench on the outer peripheral wall of the anti-disassembly connecting piece 100, the operation convenience is improved, and the anti-disassembly connecting piece 100 with a smaller size is particularly convenient to sleeve; in addition, the anti-disassembly bump 20 is disposed on the outer peripheral wall of the anti-disassembly connector 100, so that the force arm or the length of the couple arm of the tightening torque of the joint wrench to the anti-disassembly connector 100 is increased, and thus, the operator can more easily complete the tightening of the fixing member and the anti-disassembly connector 100.

Preferably, in one embodiment, the outer circumferential wall of the tamper-evident fastener 100 has a truncated cone shape, and the outer diameter of the tamper-evident fastener 100 increases in a direction in which the joint wrench approaches and sleeves the tamper-evident fastener 100; it will be appreciated that in other embodiments, the peripheral wall of the tamper evident connector 100 may be shaped as other types of surfaces of revolution, such as cylindrical surfaces or a combination of cylindrical and conical surfaces.

In the present embodiment, the fastening direction is clockwise, and the rotation direction of the sliding surface 22 is counterclockwise. In other embodiments, the tightening direction may be counterclockwise, and the rotation direction of the sliding surface 22 may be clockwise.

In one embodiment of the present invention, the sliding surface 22 is a curved surface, and the sliding surface 22 is an inner concave surface.

Preferably, in one embodiment, the sliding surface 22 is a spiral surface centered on the axis of the tamper-evident connector 100. The sliding surface 22 is recessed in the direction in which the tamper-proof connector 100 is fitted to the joint wrench, as viewed from the side of the tamper-proof connector 100.

So set up, the shape of glide plane 22 is more level and smooth, can further reduce the coefficient of friction between glide plane 22 and the joint spanner to avoid connecting the relative movement bite or the jamming between spanner and glide plane 22, realize better preventing dismantling the function of connecting piece 100.

It is understood that the sliding surface 22 may also be disposed to protrude along the axial direction of the tamper-proof connector 100, and the description of the sliding surface 22 disposed to protrude along the axial direction of the tamper-proof connector 100 is omitted.

In one embodiment, the stop surface 21 is a plane, and the stop surface 21 is parallel to the axial plane of the tamper-evident connector 100.

So configured, the stop surface 21 can be in close contact with a corresponding mating surface of the joint wrench, and the force of the joint wrench acting on the stop surface 21 is perpendicular to the axial direction of the through hole 10. When the anti-disassembly connecting piece 100 and the fixing piece are connected by using the nut wrench and the joint wrench, the joint wrench provides a circumferential abutting moment for the anti-disassembly connecting piece 100 without generating a component force along the axial direction of the anti-disassembly connecting piece 100, so that the anti-disassembly connecting piece 100 and the fixing piece are screwed fast and laborsavingly.

It is understood that the stop surface 21 may be a curved surface, and the stop surface 21 is perpendicular to the radial direction of the through hole 10, as long as the joint wrench can be engaged with the anti-detach connecting member 100 and can generate a holding force or a holding component force perpendicular to the radial direction of the anti-detach connecting member 100 on the stop surface 21, thereby generating a screwing moment on the anti-detach connecting member 100.

In one embodiment, the tamper-proof connector 100 further includes a limiting portion (not shown) located at one end or the outer peripheral wall of the tamper-proof connector 100, and the limiting portion can stop an external tool for limiting the depth of the tamper-proof connector 100 sleeved by the external tool.

Specifically, in the present embodiment, the limit portion can stop the depth of the anti-detach connector 100 to which the joint wrench is fitted.

With the arrangement, the limiting part can limit the joint wrench from being further sleeved with the anti-dismounting connecting piece 100, so that the joint wrench is prevented from colliding and interfering with the fixing piece or other important external elements to cause unnecessary damage; in addition, the limiting part can ensure that the part of the joint wrench matched with the anti-dismantling lug keeps the maximum matching area with the anti-dismantling connecting piece 100, so that the process of screwing the anti-dismantling connecting piece 100 and the fixing piece is more reliable, and the anti-dismantling connecting piece 100 and the fixing piece are prevented from slipping.

Further, the limiting portion includes a first end surface relatively close to the tamper proof protrusion 20, and the first end surface is smoothly transited to the sliding surface 22.

Specifically, in the present embodiment, the stopper portion is a circular truncated cone structure provided at an end portion of the tamper resistant connector 100, and an outer diameter of the stopper portion is larger than an outer diameter of the outer circumferential wall of the tamper resistant connector 100. The external tool is sleeved on the outer peripheral wall of the anti-disassembly connecting piece 100 from one end, relatively far away from the limiting part, of the anti-disassembly connecting piece 100, and the first end face is stopped at the end part of the external tool; the sliding surface 22 is concave in the axial direction of the tamper-evident coupling 100, so that the sliding surface 22 and the first end surface together form a smooth surface without turns or protrusions.

So set up, the anti-disassembly effect of preventing tearing connecting piece 100 open is more outstanding, and the smooth surface that first terminal surface and glide plane 22 formed can show reduce with the joint spanner between coefficient of friction, prevent that obvious turn or arch from appearing in glide plane 22, can avoid preventing to tear connecting piece 100 open and produce between glide plane 22 and support holding power or static friction power to the anti-disassembly effect of preventing tearing connecting piece 100 open is influenced.

Alternatively, in another embodiment, the maximum outer diameter of the tamper-evident projection 20 is the maximum of the diameter of the tamper-evident connector 100.

With this arrangement, a technician can use an external tool to clamp the outer circumferential surface of the tamper-proof projection 20, thereby forcibly detaching the tamper-proof connector 100 from the fixing member without damaging the sliding surface 22 or the stopper surface 21 of the tamper-proof projection 20, and thus without affecting the repeated use of the tamper-proof connector 100.

The utility model discloses an in one embodiment, the quantity of preventing tearing open lug 20 is two at least, and at least two prevent tearing open lug 20 along preventing tearing open connecting piece 100 circumference evenly distributed in preventing tearing open connecting piece 100's periphery wall.

So set up, when single anti-disassembly lug 20 damaged because of reasons such as the joint spanner skids, connect the spanner can with another anti-disassembly lug 20 cooperation, do not influence the mounting and prevent the fastening installation of dismantling connecting piece 100.

On the other hand, the plurality of detachment prevention projections 20 have a plurality of stop surfaces 21, which increases the contact area of the joint wrench with the stop surfaces 21. The joint wrench can be more firmly supported on the stop surface 21, so that the risk of slipping of the joint wrench and the anti-dismounting connecting piece 100 is reduced; and the abutting force of each anti-disassembly bump 20 is further reduced, so that the stress of the root part of each anti-disassembly bump 20 close to the outer peripheral wall of the anti-disassembly connector 100 is reduced, and finally, the risk that the anti-disassembly bump 20 is broken or crushed when a large screwing torque and a fastening torque are respectively applied to the anti-disassembly connector 100 and the fixing piece is reduced.

The utility model provides a prevent tearing open connecting piece 100 has the anti-disassembly function, can use with mounting fixed connection and supporting. In the process of installing the tamper-evident connection member 100 and the fixing member using the joint wrench and the nut wrench, the joint wrench can generate a tightening torque to the tamper-evident connection member 100 only through the stopper surface 21 in the fastening direction, thereby tightening the fixing member and the tamper-evident connection member 100; the anti-disassembly connecting piece 100 cannot be unscrewed in the opposite direction, so that the fixing piece and the anti-disassembly connecting piece 100 can be disassembled; in addition, the anti-disassembly bump 20 is arranged on the outer peripheral wall of the anti-disassembly connecting piece 100, so that an operator can conveniently and quickly sleeve the connector wrench on the outer peripheral wall of the anti-disassembly connecting piece 100, the operation convenience is improved, and the anti-disassembly connecting piece 100 with a smaller size is particularly convenient to sleeve; in addition, the anti-disassembly bump 20 is disposed on the outer peripheral wall of the anti-disassembly connector 100, so that the force arm or the length of the couple arm of the tightening torque of the joint wrench to the anti-disassembly connector 100 is increased, and thus, the operator can more easily complete the tightening of the fixing member and the anti-disassembly connector 100.

Referring to fig. 4 to 7, fig. 4 is a schematic perspective view of an anti-detachment connector assembly 200 according to an embodiment of the present invention; FIG. 5 is a schematic view of the tamper evident connector assembly 200 of FIG. 4 from a first perspective; FIG. 6 is a schematic view of the tamper evident connector assembly 200 of FIG. 4 from a second perspective; fig. 7 is a schematic view of the tamper evident connector assembly 200 of fig. 4 from a third perspective.

The utility model also provides a disassembly-proof connector assembly 200, which comprises a fixing piece 210, a first pipe body 220, a second pipe body 230 and any one of the disassembly-proof connectors 100; the tamper-evident connector 100 is connected to the fixing member 210 in a fitting manner, and the first tube 220 and the second tube 230 are connected to the tamper-evident connector 100 and the fixing member 210, respectively.

Specifically, in the present embodiment, the tamper-proof connector 100 is a tamper-proof connector, and the fixing member is a nipple nut, which are connected to each other by a screw. In other embodiments, the anti-detachment connection member 100 may also be an anti-detachment nut, the fixing member is a pipe joint, and even the pipe joint nut and the pipe joint are both provided with anti-detachment structures, that is, the outer peripheral walls of the anti-detachment connection member 100 and the fixing member 210 are both provided with anti-detachment protrusions 20.

Further, in one embodiment, after the fixing member 210 is installed and fixed with the tamper connector, the diameter of the tamper connector 100 is the maximum of the diameter of the tamper connector assembly 200.

In the present embodiment, the diameter of the tamper-proof connector 100 refers to the maximum value of the diameters of the various portions of the tamper-proof connector 100, for example, the maximum outer diameter of the tamper-proof protrusion 20, rather than the diameter of the outer circumferential wall of the tamper-proof connector 100; when the tamper-evident connector 100 further includes a stopper, the diameter of the tamper-evident connector 100 refers to the outer diameter of the stopper.

So set up, the technical staff can use outside instrument centre gripping to prevent tearing open the outside of connecting piece 100, realizes dismantling the forcing of connecting piece 100 and mounting in preventing tearing open. The technician uses the external tool to grip the largest diameter location in the tamper evident connector 100 and avoids the external tool from squeezing the other components in the tamper evident connector assembly 200.

In one embodiment, one of the tamper-evident connector 100 and the fixing member 210 includes a through hole 10 having a threaded section 11 and a positioning section 12 communicating with the threaded section 11, the other of the tamper-evident connector 100 and the fixing member includes a first fixing portion 211 having an external thread, the first fixing portion 211 is connected to the threaded section 11 in a fitting manner, and the positioning section 12 abuts against one of the first tube 220 or the second tube 230 to position the first tube 220 or the second tube 230.

Specifically, in the present embodiment, a through hole 10 is formed in the anti-tamper connector 100, the through hole 10 has a threaded section 11 and a positioning section 12 that are communicated with each other, an end of the fixing member 210 protrudes outward in the axial direction to form a first fixing portion 211 having an external thread, and the fixing member 210 extends into the through hole 10 through the first fixing portion 211 and is screwed to the anti-tamper connector 100; the maximum outer diameter of the first tube 220 or the second tube 230 extending into the through hole 10 is larger than the minimum inner diameter of the positioning section 12, and the first tube 220 or the second tube 230 can move in the through hole 10 until the positioning section 12 abuts against the outer wall of either of the two, so that the positioning section 12 can limit the first tube 220 or the second tube 230 from moving in the direction of extending into the through hole 10 and leaving the through hole 10.

With the arrangement, a more stable and reliable threaded connection is formed between the anti-disassembly connecting piece 100 and the fixing piece 210; the inner wall surface of the positioning section 12 can abut against the outer wall surface of one of the first tube 220 or the second tube 230, so as to limit the movement of the first tube 220 or the second tube 230 in the through hole 10 and prevent the first tube 220 or the second tube 230 from sliding out of the through hole 10.

Further, preferably, the positioning section 12 is provided with a conical positioning surface, the end of the first tube 220 or the second tube 230 is provided with a flared portion (not shown), and the first tube 220 or the second tube 230 extends into the through hole 10, and the conical positioning surface abuts against the outer wall of the flared portion.

Specifically, in the present embodiment, the side of the positioning section 12 with the smaller inner diameter is close to the end of the tamper-evident connector 100; correspondingly, the end of the first tube 220 or the second tube 230 extending into the through hole 10 is provided with a flared portion, and the outer wall of the flared portion is a conical surface and abuts against the inner wall of the positioning section 12. After the fixing member 210 and the anti-detach connection member 100 are mounted, the first fixing portion 211 of the fixing member 210 extends into the through hole 10 and presses the flared portion, so that the flared portion is limited between the first fixing portion 211 and the inner wall surface of the positioning section 12, and the positioning section 12 positions the first tube 220 or the second tube 230.

By such arrangement, the coaxiality of the first pipe body 220 or the second pipe body 230 relative to the anti-dismounting connector 100 or the fixing piece 210 can be further ensured, the positioning effect of the first pipe body 220 or the second pipe body 230 is more reliable, and the first pipe body 220 or the second pipe body 230 is not easy to shake; in addition, the positioning section 12 can be attached to the outer wall of the flared portion, so that the anti-dismantling connector assembly 200 has a better sealing effect, and the leakage of the refrigerant leaking from the through hole 10 is prevented.

It is understood that in other embodiments, the positioning section 12 may also be a stepped hole or a hole with other shapes, and correspondingly, the flared portion may also be a revolution surface structure with other shapes, for example, the flared portion may also be a tapered portion formed by protruding the end of the first tube 220 or the second tube 230 in the radial direction, and when the fixing member is installed with the detachment prevention connector 100, the flared portion may still be limited between the first fixing portion 211 and the inner wall surface of the positioning section 12, so as to position the first tube 220 or the second tube 230.

The utility model provides a prevent tearing open connecting piece subassembly 200 has the function of preventing dismantling, has wherein prevented tearing open between connecting piece 100 and mounting 210 and has realized non-detachable fixed connection. The operator can only screw the fixing member 210 and the anti-detach connector 100 by using the nut wrench and the joint wrench, but cannot screw them loose; in addition, the anti-disassembly bump 20 is arranged on the outer peripheral wall of the anti-disassembly connecting piece 100, so that an operator can conveniently and quickly sleeve the connector wrench on the outer peripheral wall of the anti-disassembly connecting piece 100, the operation convenience is improved, and the anti-disassembly connecting piece 100 with a smaller size is particularly convenient to sleeve; in addition, the anti-disassembly bump 20 is disposed on the outer peripheral wall of the anti-disassembly connector 100, so that the force arm or the length of the couple arm of the tightening torque of the joint wrench to the anti-disassembly connector 100 is increased, and thus, the operator can complete the connection of the fixing member and the anti-disassembly connector 100 more laborsavingly.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. The utility model provides a prevent tearing open connecting piece (100), its characterized in that, the periphery wall of preventing tearing open connecting piece (100) outwards protrudes and forms prevents tearing open lug (20), prevent tearing open lug (20) and be equipped with backstop face (21) and glide plane (22), backstop face (21) are used for supplying the installation of external instrument prevent tearing open connecting piece (100), the glide plane makes external instrument dismantle when preventing tearing open connecting piece (100), prevent tearing open connecting piece (100) and follow the axial of preventing tearing open connecting piece (100) is pushed away from external instrument.

2. The tamper-evident connection (100) of claim 1 wherein the sliding surface (22) is curved and the sliding surface (22) is concave.

3. Tamper-evident connection (100) as claimed in claim 1, characterized in that the stop face (21) is planar and the stop face (21) is parallel to an axial plane of the tamper-evident connection (100).

4. The tamper-evident connector (100) according to claim 1, wherein the tamper-evident connector (100) further comprises a limiting portion, the limiting portion is located at one end or the outer circumferential wall of the tamper-evident connector (100), and the limiting portion can stop an external tool for limiting the depth of the tamper-evident connector (100) sleeved by the external tool.

5. The tamper-evident connection (100) as claimed in claim 4, wherein the retention portion comprises a first end surface relatively close to the tamper-evident projection (20), the first end surface being in smooth transition with the sliding surface (22).

6. The tamper-evident connection (100) according to claim 4, wherein the maximum outer diameter of the tamper-evident projection (20) is the maximum of the diameter of the tamper-evident connection (100).

7. The tamper-evident connector (100) according to claim 1, wherein the number of the tamper-evident protrusions (20) is at least two, and at least two of the tamper-evident protrusions (20) are uniformly distributed on the outer circumferential wall of the tamper-evident connector (100) along the circumferential direction of the tamper-evident connector (100).

8. A tamper-evident connector assembly (200) comprising a fixing member (210), a first tubular body (220) and a second tubular body (230), wherein the tamper-evident connector assembly (200) further comprises a tamper-evident connector (100) according to any one of claims 1 to 7, wherein the tamper-evident connector (100) is cooperatively connected with the fixing member (210); the first pipe body (220) and the second pipe body (230) are respectively connected with the anti-dismantling connector (100) and the fixing piece (210).

9. The tamper-evident connection assembly (200) of claim 8, wherein one of the tamper-evident connection (100) and the fixing member (210) comprises a through hole (10) having a threaded section (11) and a positioning section (12) communicating with the threaded section (11), and the other of the tamper-evident connection (100) and the fixing member comprises a first fixing portion (211) having an external thread, the first fixing portion (211) is cooperatively connected with the threaded section (11), and the positioning section (12) abuts against one of the first tube (220) or the second tube (230) and positions the first tube (220) or the second tube (230).

10. The tamper-evident connector assembly (200) of claim 9 wherein the locating section (12) is provided with a tapered locating surface and the end of the first or second body (220, 230) is provided with a flared portion, the tapered locating surface abutting an outer wall of the flared portion.

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