CN221857888U - Pipe joint locking structure - Google Patents

Abstract

The utility model provides a pipe joint locking structure, which comprises a male joint and a female joint which are in butt joint, wherein the male joint is provided with a male joint body, a spring and a sleeve, the male joint body is provided with at least one groove at the outer side, the spring is sleeved on the male joint body, one end of the spring is hooked on the outer peripheral side of the male joint body, the sleeve is covered outside the male joint body and the spring and is connected with the other end of the spring, the sleeve is provided with a buckling piece, the buckling piece can be movably buckled and combined with or separated from the groove of the male joint body, the female joint is provided with a female joint body, the outer peripheral side of the female joint body is provided with at least one inclined guide channel, and when the male joint and the female joint are in butt joint, the spring is pulled forwards along with the rotation of the sleeve, so that the buckling piece of the sleeve moves along the closed end in the guide channel of the female joint body and is locked, thereby achieving the self-locking and anti-loosening effects.

Description

Pipe joint locking structure

Technical Field

The utility model relates to a pipe joint, in particular to a pipe joint locking structure capable of achieving self-locking and anti-loosening.

Background

Quick connectors are often used in the delivery of liquids or gases. The conventional quick connector is designed by matching a male connector and a female connector of a connecting pipeline for quick disassembly or quick connection, and the basic structure of the male connector and the female connector usually maintains the fixed state between the male connector and the female connector by using a steel ball clamping manner.

However, the existing quick connector has potential safety hazards of loose connection, easy loosening and the like in a clamping manner of steel balls, because the connection is mainly realized by pressing the steel balls arranged in the sleeve ring of the female connector to clamp and fix the arc concave surface of the male connector, the sleeve ring of the female connector is easy to be subjected to strong vibration or external impact to be loosened and loosened, so that the sleeve ring of the female connector can not be pressed and fixed on the arc concave surface of the male connector, further the male connector is separated from the female connector, and the problem of easy loosening after the male connector and the female connector are connected is caused.

Thus, how to solve the problem and the lack of easy loosening of the quick connector after connection is the direction of the present inventors and related industries in the industry to study and improve.

Disclosure of utility model

In order to effectively solve the above-mentioned problems, an objective of the present utility model is to provide a locking structure of a pipe joint, in which a spring disposed in a male joint is pulled forward along with rotation of a sleeve, so that a protrusion on a fastening member of the sleeve can move along an inclined guiding channel of a female joint body and be locked, and a self-locking and anti-loosening locking structure of the pipe joint is achieved by a reaction force of the spring.

In order to achieve the above object, the present utility model provides a pipe joint locking structure, comprising:

The male connector is provided with a male connector body, two ends of the male connector body are respectively provided with a first opening and a first pipe joint, a first channel is arranged in the male connector body in a penetrating way, the first channel is positioned between the first opening and the first pipe joint and communicated with each other, at least one groove is formed in the peripheral side of the male connector body, the groove extends from the peripheral side of the male connector body adjacent to the first opening towards the first pipe joint, a spring is sleeved outside the male connector body, one end of the spring is connected with the peripheral side of the male connector body, a sleeve is sleeved outside the male connector body and the spring, the other end of the spring is fixed on the sleeve, a through hole corresponding to the groove is formed in the sleeve, a buckling piece is arranged outside the sleeve, one end of the buckling piece is fixed on the sleeve, a convex body is arranged at the position of the other end of the buckling piece opposite to the through hole, the convex body penetrates through the through hole and protrudes inwards the groove, and the convex body can be movably combined with or separated from the groove of the male connector body;

The female connector is provided with a female connector body, two ends of the female connector body are respectively provided with a second opening and a second pipe joint, a second channel is penetrated in the female connector body, the second channel is positioned between the second opening and the second pipe joint and communicated with the second opening and the second pipe joint, at least one guide channel is arranged on the peripheral side of the female connector body, and the guide channel extends obliquely from the peripheral side adjacent to the second opening of the female connector body towards the direction of the second pipe joint; and

When the male connector and the female connector are connected, the spring is pulled forwards along with the rotation of the sleeve, so that the convex body of the sleeve moves along the guide channel of the female connector body and is locked.

The pipe joint locking structure comprises: the male connector body is provided with at least one accommodating part, the accommodating part is arranged on the outer peripheral side of the male connector body, one end of the spring is inserted into the accommodating part, and the other end of the spring is inserted into the inner side wall surface of the sleeve.

The pipe joint locking structure comprises: the convex body of the buckling piece is provided with a base part and a guide cone part, the base part is connected with the other end of the buckling piece, and the guide cone part is formed by gradually increasing the outer diameter from the base part towards the groove direction.

The pipe joint locking structure comprises: the female connector body is provided with at least one guide pillar, and the guide pillar is convexly arranged on the outer peripheral side of the female connector body and adjacent to the guide channel of the female connector body.

The pipe joint locking structure comprises: the sleeve is provided with a first end and a second end at two ends respectively, the outside of the sleeve is provided with at least one guide post channel, the initial end of the guide post channel is positioned at the second end, the guide post channel extends obliquely along the axial direction of the sleeve to form an inclined groove shape, and the guide post channel of the sleeve is used for guiding the guide post outside the female joint body to move to the inner phase of the guide post channel.

The pipe joint locking structure comprises: the buckling piece is a sheet body or a strip body.

The pipe joint locking structure comprises: the guide channel is provided with an initial opening end and a closed end, the initial opening end is used for guiding the convex body of the buckling piece to enter the guide channel, and the closed end is used for positioning and locking the convex body.

By means of the spring arranged in the male connector, the spring can be pulled forwards along with the rotation of the sleeve, so that the convex body of the sleeve moves along the closed end in the guide channel of the female connector body and is locked, the male connector and the female connector can be quickly connected with each other, and the effects of quick connection, labor saving, self locking and looseness prevention can be achieved.

Drawings

Fig. 1A is a schematic perspective view of the present utility model.

Fig. 1B is another perspective view of the present utility model.

Fig. 2A is a schematic cross-sectional operation of the male connector and the female connector of the present utility model.

Fig. 2B is another cross-sectional operation schematic diagram of the male connector and the female connector of the present utility model.

Fig. 2C is another cross-sectional operation schematic diagram of the male connector and the female connector of the present utility model.

FIG. 3 is a schematic view illustrating the engagement of the sleeve and the protrusion of the male connector with the guide channel of the female connector.

Reference numerals illustrate: a pipe joint locking structure-1; a male connector-2; a male connector body-21; a plug-in part-211; a first opening-2111; trench-2112; a male head seat portion-213; a first tubular segment-2130; a housing portion-2131; a first pipe joint-214; a first pipe interface-2141; a first channel-215; female joint-3; a female connector body-31; a female socket part-310; second tubular segment-3101; a joint-311; a second opening-3111; guide channel-3112; initial open end-3112 a; closed end-3112 b; guide post-3113; a second pipe joint-312; a second pipe interface-3121; a second channel-313; a sleeve-41; a first end-41 a; a second end-41 b; guide post channel-411; through-hole-412; an inner ring portion-413; a connection hole-414; a spring-42; first and second connection terminals 421 and 422; a catch-43; a convex body-44; a base-441; guide taper-442; an inclined conical surface-442 a; cone convex end-442 b; the accommodating space is 45; rotate counterclockwise-F.

Detailed Description

The above objects of the present utility model, as well as the structural and functional characteristics thereof, will be described in terms of the preferred embodiments of the present utility model as illustrated in the accompanying drawings.

The utility model provides a pipe joint locking structure 1, which is shown in fig. 1A, 1B and 2A. The pipe joint locking structure 1 can be suitable for water-cooling, gas-cooling or hydraulic pipe joints, and the pipe joint locking structure 1 comprises a male joint 2 and a female joint 3. The male connector 2 comprises a male connector body 21, a first channel 215 is penetrating through the male connector body 21, and the male connector body 21 has a plug portion 211, a male header portion 213 and a first pipe joint portion 214, the male header portion 213 has a hollow first pipe body 2130 and a receiving portion 2131, and the first pipe body 2130 extends outwards from the front side of the male header portion 213. The first channel 215 is located in the first pipe section 2130 and communicates with the first pipe joint 214 and the flow channel in the plug 211.

The first pipe section 2130 of the male connector body is provided with at least one groove 2112, the groove 2112 extends from the outer peripheral side of the first pipe section 2130 towards the first pipe joint 2141, and in this embodiment, the groove 2112 is two straight grooves 2112 respectively provided on opposite sides of the first pipe section 2130 and are arranged in parallel with the corresponding first channel 215. The receiving portion 2131 may be a groove (or a hole or a cave or a hole) formed at the middle section of the outer circumference side of the first pipe section 2130 of the male base 213, and the receiving portion 2131 is used to provide a connection with a spring 42, in this embodiment, a plurality of receiving portions 2131 are selected and spaced apart from each other at the outer circumference side of the first pipe section 2130 of the male base 213. The plug portion 211 is disposed in the first pipe shaft segment 2130, the first pipe joint 214 is disposed at the rear side of the male base portion 213 and protrudes outwards, the plug portion 211 and the first pipe joint 214 are respectively provided with a first opening 2111 and a first pipe joint 2141 communicating with the first opening 2111, the first channel 215 is disposed between the first opening 2111 and the first pipe joint 2141 and is communicated with each other, and the first pipe joint 214 is used for providing connection of a pipe member.

Referring to fig. 1A, 1B, 2A, 2B, and 2C, a sleeve 41 and a spring 42 are disposed on the outer peripheral side of the male connector body 21, the sleeve 41 is a hollow shell with two open ends, and is sleeved outside the male connector body 21, and the two ends of the sleeve 41 are respectively provided with a first end 41A and a second end 41B and a connecting hole 414, the first end 41A is disposed at the end of the sleeve 41 opposite to the male connector 2, the second end 41B is disposed at the end of the sleeve 41B opposite to the female connector 3, an inner ring 413 is disposed inside the first end 41A of the sleeve, the connecting hole 414 is disposed on the inner surface between the first end 41A and the second end 41B of the sleeve 41, and the connecting hole 414 penetrates through the barrel body of the sleeve 41, and the sleeve 41 is movably sleeved on the first pipe segment 2130 of the male connector seat 213 of the male connector body 21 through the inner ring 413, so that the sleeve 41 is covered on the first pipe segment 2130 of the male connector body 21 and the first pipe seat 213 of the male connector body 213, and the outer surface 45 is rotatably sleeved in the outer surface of the sleeve 45 opposite to the first pipe seat 213 of the male connector body 213, and the outer surface 45 is rotatably disposed in the outer surface of the sleeve 2. In addition, at least one guide post channel 411, a through hole 412 corresponding to the groove 2112 of the male connector body 21, and a locking member 43 are further disposed on the sleeve 41, the through hole 412 is disposed near the surface of the second end 41b of the sleeve 41 and penetrates through the barrel of the sleeve 41, the through hole 412 is disposed adjacent to the guide post channel 2112, the initial end of the guide post channel 411 is disposed at the second end 41b, and the guide post channel 411 extends in an inclined (oblique) manner along the axial direction of the sleeve 41.

The torsion spring 42 is fitted around the outer peripheral side of the first pipe section 2130 of the male seat 213 of the male connector body 21, is disposed around the groove 2112, and is covered by the sleeve 41 together with the male connector body 21. The spring 42 has a first connecting end 421 and a second connecting end 422, the first connecting end 421 is selectively fixed (inserted, hooked) in any one of the accommodating portions 2131, the second connecting end 422 of the spring 42 is fixed (inserted, hooked) in the connecting hole 414 of the sleeve 41, and the spring 42 is twisted to generate accumulated torque when both ends of the spring 42 are respectively connected with the sleeve 41 and the male connector body 21. In practice, the user can adjust the first connecting end 421 of the spring 42 to be inserted and fixed in any one of the accommodating portions 2131 according to the requirement of the tightness and speed of the male and female connectors 2 and 3, and further adjust the magnitude of the accumulated torque (torsion moment) of the spring 42, and correspondingly adjust the magnitude of the tensile force of the spring 42.

The fastening member 43 is a piece (strip) of fastening member 43, in this embodiment, the fastening member 43 is provided with a plurality of fastening members 43, for example, two fastening members 43, and are respectively disposed on the outer side surface of the sleeve 41, one end of the fastening member 43 is fixed (by screwing) on the outer side surface near the first end 41a of the sleeve 41, the other end of the fastening member 43 is a free end, and a protrusion 44 is provided, the protrusion 44 relatively passes through the through hole 412 of the sleeve 41 and protrudes toward the inside of the groove 2112 and is clamped in the groove 2112. Specifically, the protruding body 44 has a base portion 441 and a guiding cone portion 442, the base portion 441 is disposed at the other end of the retaining member 43 opposite to the sleeve 41, the guiding cone portion 442 is formed by gradually reducing the outer diameter from the base portion 441 toward the inside of the sleeve 41, the guiding cone portion 442 has an inclined cone 442a and a cone protruding end 442b, the inclined cone 442a extends from the top surface of the base portion 441 to the cone protruding end 442b in an inclined manner, and since the protruding body 44 is disposed at the free end of the retaining member 43, the protruding body 44 is lifted by pushing the inclined cone 442a, otherwise falls back to the original position when not pushed, and the cone protruding end 442b is movably hooked to or separated from the groove 2112 of the male connector body 21. For example, referring to fig. 2A, 2B and 2C, the tapered end 442B of the guide tapered portion 442 of the protruding body 44 is pushed by the female connector 3 to lift upwards in the through hole 412 of the sleeve 41, and the retaining member 43 is also displaced upwards as the protruding body 44 is pushed upwards, and then the tapered end 442B of the protruding body 44 is pushed by the female connector 3 to separate from the groove 2112 (as shown in fig. 2B and 2C).

If the tapered convex end 442b of the guide tapered portion 442 of the convex body 44 is not pushed by the female connector 3, the convex body 44 is pushed back downward by the restoring elastic force of the locking member 43, so that the tapered convex end 442b of the guide tapered portion 442 of the convex body 44 is locked (hooked) and combined in the groove 2112 (as shown in fig. 2A). So configured, by engaging the protrusions 44 of the retainer 43 within the grooves 2112 of the male connector body 21 (to retain the accumulated torque generated by the torsion of the spring 42, or by disengaging the protrusions 44 of the retainer 43 from the grooves 2112 of the male connector body 21), the spring 42 is pulled forward and generates an axial tensile force as the sleeve 41 rotates counterclockwise F as viewed in fig. 3).

Referring to fig. 1A, 1B and 2A, the female connector 3 includes a female connector body 31, a second channel 313 is formed in the female connector body 31 and penetrates through two ends of the female connector body 31, one end of the female connector body 31 has a female connector seat 310, one end of the female connector seat 310 extends to form a second pipe joint 312, the second pipe joint 312 has a second pipe joint 3121, the other end is abutted to a joint 311, and a hollow second pipe section 3101 is sleeved outside the joint 311. The second channel 313 is located in the joint 311 and communicates with the flow channel in the second pipe joint 312.

The outer peripheral side of the second pipe section 3101 of the female joint body 31 is provided with at least one inclined guide channel 3112 and at least one guide post 3113, and the guide channel 3112 is inclined (inclined) from the outer peripheral side edge of the second pipe section 3101 toward the second pipe joint 3121 to form an inclined groove (slot). In this embodiment, the guide channel 3112 is a plurality of guide channels 3112, for example, two guide channels 3112 are disposed on the outer side surface of the second pipe body section 3101, each guide channel 3112 has an initial open end 3112a and a closed end 3112b, the initial open end 3112a is disposed at the end of the second pipe body section 3101 opposite to the end that is abutted with the male connector 2, the initial open end 3112a is an initial entry position for guiding the boss 44 of the fastener 43 of the male connector body 21 into the guide channel 3112, the closed end 3112b is an end position where the boss 44 of the fastener 43 moves into the guide channel 3112, and a recess (mouth) recessed inwards is optionally disposed at the closed end 3112b for positioning and locking the boss 44 to prevent unlocking. The guide posts 3113 are protruding on the outer peripheral side of the female connector body 31, and adjacent to the guide channel 3112 of the female connector body 31, in this embodiment, the guide posts 3113 are three guide posts 3113 disposed on the outer surface of the second pipe section 3101 at intervals, and the guide posts 3113 of the female connector body 31 are respectively relatively guided by the guide post channels 411 of the male connector body 21 to move to the position of the closed end 3112b in the guide post channel 411 for locking and combining, thereby achieving the effect of assisting the male connector 2 and the female connector 3 to be quickly aligned, connected and locked with each other.

The second pipe section 3101 is sleeved outside the connecting portion 311, the connecting portion 311 is provided with a second opening 3111, and the second opening 3111 is used for inserting and connecting the plug portion 211 of the male connector body 21. The second pipe joint 312 is disposed at the front end of the female seat 310 and protrudes outwards, the second pipe joint 312 is used for connecting with another pipe fitting, the second pipe joint 312 is provided with a second pipe joint 3121, and the second pipe joint 3121 is communicated with the second opening 3111.

Referring to fig. 1A, 2A, 3, when the male and female connectors 2, 3 are mated, the boss 44 and the guide post channel 411 of the male connector body 21 are respectively inserted into the guide channel 3112 and the guide post 3113 of the female connector body 31 (as shown in fig. 2A), so that the guide cone 442 of the boss 44 of the male connector body 21 is pushed and pushed by the initial opening end 3112A of the guide channel 3112 of the female connector body 31 to lift up (as shown in fig. 2B), and then the inclined cone 442A of the guide cone 442 of the boss 44 is abutted against and contacted with the guide channel 3112 of the female connector body 31, and meanwhile, during the rotation F of the sleeve 41 in the counterclockwise direction, the spring 42 is axially moved and rotated along with the sleeve 41 to be pulled forward, when the guide cone 442 of the boss 44 of the locking member 43 is also guided to move toward the closed end 3112B of the guide channel 3112 (as shown in fig. 3) along with the rotation of the sleeve 41, the guide post channel 411 of the sleeve 41 rotates along with the sleeve 41 and guides the guide post 3113 of the female connector body 31 to move to the closed end 3112B of the guide post channel 411 of the male connector body 21, the guide post 3113 of the female connector body 31 is driven by the rotation force of the sleeve 41 to rotate the female connector body 31 toward the male connector body 21 for locking and combining, and the axial stretching force of the spring 42 to the boss 44 of the locking member 43 is continued, so that the guide cone 442 of the boss 44 abuts against the closed end 3112B of the guide channel 3112 to reach locking (as shown in fig. 2C and 3), at this time the plug portion 211 of the male connector body 21 is inserted into the second opening 3111 of the combining portion 311 of the female connector body 31, the first passage 215 of the male connector body 21 is communicated with the second passage 313 of the female connector body 31 through the first opening 2111.

The guide channels 3112 and the guide posts 3113 are two in this embodiment, but not limited thereto. In practice, the number of the guide channels 3112 and the guide posts 3113 of the female connector body 31 is matched with the number of the locking members 43 and the guide post channels 411 of the male connector body 21.

The grooves 2112 and the receiving portions 2131 are provided in plural numbers on the outer peripheral side of the male connector body 21 in the present embodiment, but not limited thereto. In another embodiment, the grooves 2112 and the receiving portions 2131 are each provided singly on the outer peripheral side of the male connector body 21.

The connecting hole 414 of the present embodiment is formed through the sleeve 41, but is not limited thereto. In other embodiments, the connecting hole 414 may instead be provided in the form of a hole or slot or hole on the inner peripheral side of the sleeve 41 to interface with the second connecting end 422 of the corresponding spring 42.

Therefore, the spring 42 of the male connector 2 is pulled forward along with the rotation of the sleeve 41, so that the convex body 44 of the sleeve 41 moves along the closed end in the guide channel 3112 of the female connector body 31 to lock, and the male connector 2 and the female connector 3 are mutually jointed and communicated, and the self-locking and anti-loosening pipe joint locking structure is achieved by the reaction force of the spring. In addition, the male connector 2 and the female connector 3 can be connected more labor-saving, convenient and quick in use, and the operation is easier.

Claims (7)

1. A pipe joint locking structure, characterized by comprising:

The male connector is provided with a male connector body, two ends of the male connector body are respectively provided with a first opening and a first pipe joint, a first channel is arranged in the male connector body in a penetrating way, the first channel is positioned between the first opening and the first pipe joint and communicated with each other, at least one groove is formed in the peripheral side of the male connector body, the groove extends from the peripheral side of the male connector body adjacent to the first opening towards the first pipe joint, a spring is sleeved outside the male connector body, one end of the spring is connected with the peripheral side of the male connector body, a sleeve is sleeved outside the male connector body and the spring, the other end of the spring is fixed on the sleeve, a through hole corresponding to the groove is formed in the sleeve, a buckling piece is arranged outside the sleeve, one end of the buckling piece is fixed on the sleeve, a convex body is arranged at the position of the other end of the buckling piece opposite to the through hole, the convex body penetrates through the through hole and protrudes inwards the groove, and the convex body can be movably combined with or separated from the groove of the male connector body;

The female connector is provided with a female connector body, two ends of the female connector body are respectively provided with a second opening and a second pipe joint, a second channel is penetrated in the female connector body, the second channel is positioned between the second opening and the second pipe joint and communicated with the second opening and the second pipe joint, at least one guide channel is arranged on the peripheral side of the female connector body, and the guide channel extends obliquely from the peripheral side adjacent to the second opening of the female connector body towards the direction of the second pipe joint; and

When the male connector and the female connector are connected, the spring can be pulled forwards along with the rotation of the sleeve, so that the convex body of the sleeve moves along the guide channel of the female connector body and is locked.

2. A pipe joint locking structure as defined in claim 1, wherein: the male connector body is provided with at least one accommodating part, the accommodating part is arranged on the outer peripheral side of the male connector body, one end of the spring is inserted into the accommodating part, and the other end of the spring is inserted into the inner side wall surface of the sleeve.

3. A pipe joint locking structure as defined in claim 1, wherein: the convex body of the buckling piece is provided with a base part and a guide cone part, the base part is connected with the other end of the buckling piece, and the guide cone part is formed by gradually increasing the outer diameter from the base part towards the groove direction.

4. A pipe joint locking structure as defined in claim 1, wherein: the female connector body is provided with at least one guide pillar, and the guide pillar is convexly arranged on the outer peripheral side of the female connector body and adjacent to the guide channel of the female connector body.

5. A pipe joint locking structure as defined in claim 4, wherein: the sleeve is provided with a first end and a second end at two ends respectively, the outside of the sleeve is provided with at least one guide post channel, the initial end of the guide post channel is positioned at the second end, the guide post channel extends obliquely along the axial direction of the sleeve to form an inclined groove shape, and the guide post channel of the sleeve is used for guiding the guide post outside the female joint body to move to the inner phase of the guide post channel.

6. A pipe joint locking structure as defined in claim 1, wherein: the buckling piece is a sheet body or a strip body.

7. A pipe joint locking structure as defined in claim 1, wherein: the guide channel is provided with an initial opening end and a closed end, the initial opening end is used for guiding the convex body of the buckling piece to enter the guide channel, and the closed end is used for positioning and locking the convex body.