CN212776156U - Secondary confirmation quick connector - Google Patents

Abstract

The utility model discloses a quick connector is confirmed to secondary. This quick connector is confirmed to secondary includes male joint and female joint, the male joint includes first body, the female joint includes the second body that is used for cup jointing first body, be provided with seal assembly between first body and the second body, first body is provided with the flange of shutoff at second body tip, the tip of second body is provided with the lock cover with flange complex, the both sides of lock cover are provided with the spout that is used for pegging graft locking spring, the bilateral symmetry of locking spring is provided with the external locking arm, the inboard symmetry of external locking arm is provided with the internal locking arm, the internal locking arm cooperates with the spout, the directional locking spring inboard of the hook point of return hook, the free end of external locking is provided with the return hook, the return hook staggers with the internal locking arm and arranges, the middle part symmetry of lock cover is provided with the recess that the return hook was locked for the first time, the tail end of spout is provided with the arch of return hook locking. The utility model provides a whether the unable discernment is installed in place during quick connector assembly to and quick connector dismantles the problem of difficulty during the maintenance.

Description

Secondary confirmation quick connector

Technical Field

The utility model belongs to the technical field of the pipe connection technique and specifically relates to a quick connector is confirmed to secondary.

Background

The traditional quick connector adopts auditory sense to judge whether the quick connector is locked or not in the assembling process, and whether the quick connector is in the locking state or not can not be directly judged after the assembling is finished, so that the leakage fault caused by the fact that the quick connector is not assembled in place can occur. The requirement that whether the assembly is in place can be accurately judged is provided in the quick-plug connecting pipeline.

In the existing joint, most of the joints are simultaneously clamped and disassembled at two sides or pulled out from one side for disassembly. And because of the space reason when the vehicle maintenance, dismantle the face and often sheltered from by other parts, can't dismantle, need take apart the part that blocks and just can open the quick connector, perhaps violently disassemble. Therefore, the quick connector which can be disassembled from the front surface and the back surface can be opened, so that the disassembly in the vehicle maintenance process is more convenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can discern when assembling that the installation targets in place, easily dismantles when maintaining to the not enough of prior art existence once more confirm quick connector.

In order to achieve the above object, the utility model discloses the technical scheme that the quick connector of secondary confirmation adopted is:

a secondary confirmation quick connector comprises a male connector and a female connector, wherein the male connector comprises a first pipe body, the female connector comprises a second pipe body for sleeving the first pipe body, a sealing assembly is arranged between the first pipe body and the second pipe body, the first pipe body is provided with a flange for plugging the end part of the second pipe body, the end part of the second pipe body is provided with a lock sleeve matched with the flange, two sides of the lock sleeve are provided with chutes for inserting lock springs, the inlets of the chutes are provided with first arc bulges, the lock springs lock the flanges in the lock sleeve, two sides of the lock springs are symmetrically provided with outer lock arms, the inner sides of the outer lock arms are symmetrically provided with inner lock arms, the middle parts of the inner lock arms are provided with second arc bulges, the second arc bulges are matched with the first arcs to expand the inner lock arms, the free ends of the inner lock arms are provided with first recesses convenient for inserting the male connector, the free ends of the outer lock arms are provided with return hooks, and the hook, the side face of the back hook is provided with a second recess convenient for inserting the male connector, the back hook and the inner lock arm are arranged in a staggered mode, grooves for locking the back hook for the first time are symmetrically formed in the middle of the lock sleeve, protrusions for locking the back hook for the second time are arranged at the tail end of the sliding groove, and the protrusions are symmetrically arranged on two sides of the lock sleeve. During assembly, firstly inserting the lock spring into the sliding groove, expanding the return hook and the outer lock arm, sliding the return hook to the groove along the sliding groove and locking the groove, blocking the second arc protrusion on the outer side by the first arc protrusion so that the lock spring does not fall down any more to form a first locking state, inserting the male connector, pushing the flange against the first recess and the second recess and expanding the inner lock arm and the outer lock arm to squeeze into the lock sleeve, expanding the return hook by the flange and still locking the groove, returning the inner lock arm to the original position, locking the flange at the end of the second pipe body for the first time, pushing the lock spring to continue to move towards the axis direction of the lock sleeve, keeping the male connector still, sliding the second arc protrusion from the outer side of the first arc protrusion to the inner side, sliding the return hook from the upper side of the protrusion to the lower side of the protrusion and locking the protrusion to form a second locking state, and easily identifying the flange to be; when the male connector is disassembled, the outward-turning back hook bypasses the protrusion to push the back hook, the second arc protrusion and the first arc are matched with each other to prop open the inner locking arm, the male connector can be pulled out, and the operation is convenient and fast.

Preferably, the root of the inner locking arm is provided with a rib plate, the rib plate is symmetrically arranged on the inner side of the inner locking arm, a clamping groove is formed between the two rib plates, and the lock sleeve is provided with a limiting block matched with the clamping groove. The clamping groove is matched with the limiting block to further limit the rotation or the left and right movement of the lock spring, so that the stability of the lock spring is improved, and meanwhile, the rib plate can improve the strength of the inner lock arm, so that the lock spring is not easy to break.

Preferably, the upper side of the hook tip of the back hook is provided with a boss, and the lower side of the hook tip is provided with an arc surface. The boss ensures that the flange is not extruded out of the groove by the flange when the return hook is locked for the first time, and the cambered surface enables the return hook to be in line contact with the contacted surface, so that the return hook can slide on the contacted surface conveniently.

Preferably, the protrusion is provided with an inclined surface facilitating sliding of the back hook.

Preferably, the lock spring is made of metal or hard plastic. The service life of the lock spring is ensured.

Compared with the prior art, the utility model, have following advantage:

during assembly, the lock spring is inserted, the return hook slides to the groove along the sliding groove and locks the groove, the first arc protrusion blocks the second arc protrusion on the outer side to form a first locking state, the male connector is inserted to complete first locking, the lock spring is pushed to continuously move towards the axis direction of the lock sleeve to keep the male connector still, the second arc protrusion slides to the inner side from the outer side of the first arc protrusion, the return hook slides to the lower side of the protrusion from the upper side of the protrusion and locks the protrusion, secondary locking is completed, and the lock is few in assembly parts, compact in structure and convenient and fast to operate; when the male connector is disassembled, the outward-turning back hook bypasses the protrusion to push the back hook, the first arc protrusion and the second arc are matched with each other to prop open the inner locking arm, the male connector can be pulled out, and the operation is convenient and fast.

Drawings

FIG. 1 is an exploded view of a double-confirming quick connector;

FIG. 2 is an assembled cross-sectional view of a double-action quick connect coupling;

FIG. 3 is a schematic structural view of a female connector;

FIG. 4 is a schematic view of the construction of the bolts;

FIG. 5 is a view of a locked state;

fig. 6 is a diagram of the secondary locking state.

The locking device comprises a male connector 1, a first pipe body 11, a flange 12, a female connector 2, a second pipe body 21, a locking sleeve 22, a sliding groove 221, a first arc protrusion 222, a limiting block 223, a groove 224, a protrusion 225, a slope 226, a sealing device 3, a spacer ring 31, a retainer ring 32, a sealing ring 33, a locking spring 4, an outer locking arm 41, a back hook 411, a second recess 412, a boss 413, an arc surface 414, an inner locking arm 42, a second arc protrusion 421, a first recess 422, a rib plate 43 and a clamping groove 44.

Detailed Description

The present invention will be further clarified by the following description in conjunction with the accompanying drawings, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the invention by those skilled in the art after reading the present invention are within the scope defined by the appended claims.

As shown in fig. 1-6, a double-confirmation quick connector comprises a male connector 1 and a female connector 2, the male connector comprises a first pipe 11, the female connector comprises a second pipe 21 for sleeving the first pipe, a sealing assembly 3 is arranged inside the second pipe, the sealing assembly comprises a spacer ring 31 and a retainer ring 32, sealing rings 33 are arranged on two sides of the spacer ring, the retainer ring blocks the spacer ring and the sealing rings inside the second pipe, a flange 12 is arranged in the middle of the first pipe and seals the end of the second pipe, a lock sleeve 22 matched with the flange is arranged at the end of the second pipe, sliding grooves 221 for inserting lock springs 4 are formed on two sides of the lock sleeve, a first arc bulge 222 is arranged at the inlet of the sliding grooves, the lock springs lock the flange in the lock sleeve, the lock springs are U-shaped and made of hard plastic, outer locking arms 41 are symmetrically arranged on two sides of the lock springs, inner locking arms 42 are symmetrically arranged on the inner sides of the outer locking arms, the inner locking arms and the outer locking arms are coplanar with one side, the other side is staggered, the width of the inner locking arm is smaller than that of the outer locking arm, space is reasonably utilized, the structure of the component is compact, the root part of the inner locking arm is provided with a rib plate 43, the rib plate is coplanar with the inner locking arm and the outer locking arm simultaneously, the width of the rib plate is smaller than that of the inner locking arm, the rib plate is symmetrically arranged on the inner side of the inner locking arm, the strength of the inner locking arm is improved, the rib plate is not easy to break, a clamping groove 44 is formed between the two rib plates, a limiting block 223 matched with the clamping groove is arranged on a lock sleeve, the clamping groove is matched with the limiting block to further limit the rotation or the left and right movement of a locking spring, the stability of the locking spring is improved, the inner locking arm is matched with the sliding groove, the middle part of the inner locking arm is provided with a second arc bulge 421, the first arc bulge and the second arc are matched with each other to open the inner locking arm, the free end of the inner locking, the boss 413 is arranged on the upper side of the hook point of the back hook, the groove is not extruded by the flange when the flange is locked by the back hook for the first time, the arc surface 414 is arranged on the lower side of the hook point, the back hook is in line contact with the contact surface, the back hook is convenient to slide on the contact surface, the back hook and the inner lock arm are arranged in a staggered mode, the groove 224 for locking the back hook for the first time is symmetrically arranged in the middle of the lock sleeve, the protrusion 225 for locking the back hook for the second time is arranged at the tail end of the sliding groove, the protrusion is symmetrically arranged on the two sides of the lock sleeve, and the inclined plane 226 for.

The specific working process and principle of the secondary confirmation quick connector are as follows: when the male connector is assembled, the lock spring is inserted into the sliding groove, the outer locking arm props against the sliding groove along with the return hook and is propped open, the return hook slides to the groove along the sliding groove and locks the groove, the first arc protrusion of the sliding groove keeps the second arc protrusion of the inner locking arm outside so that the lock spring does not fall down any more to form a first locking state, the male connector is inserted, the flange props against the first recess and the second recess and props open the inner locking arm and the outer locking arm and is squeezed into the lock sleeve, the male connector sequentially penetrates through the check ring, the sealing ring, the spacer ring and the sealing ring and extends into the female connector, the return hook is propped open by the flange and still locks the groove, the inner locking arm returns to the original position to lock the flange at the end of the second pipe body for the first time, the lock spring is continuously pushed to move towards the axis of the lock sleeve to keep the male connector still, the second arc protrusion slides to the lower side from the upper side, locking the flange to the end of the second pipe body for the second time; when the male connector is disassembled, the outward-turning back hook bypasses the protrusion to push the back hook, the first arc protrusion and the second arc are matched with each other to prop open the inner locking arm, and then the male connector can be pulled out. The utility model provides a can discern that the male joint assembly targets in place and firmly reliably during the assembly of secondary quick connector, the assembly part is few, compact structure, the simple operation, the male joint dismantlement is also very convenient during the maintenance.

Claims (5)

1. The utility model provides a two-shot confirmation quick connector which characterized in that: the male connector comprises a first pipe body, the female connector comprises a second pipe body for sleeving the first pipe body, a sealing assembly is arranged between the first pipe body and the second pipe body, the first pipe body is provided with a flange for plugging the end part of the second pipe body, the end part of the second pipe body is provided with a lock sleeve matched with the flange, two sides of the lock sleeve are provided with chutes for inserting lock springs, a first arc bulge is arranged at the inlet of each chute, the lock springs lock the flanges in the lock sleeve, outer lock arms are symmetrically arranged at two sides of each lock spring, inner lock arms are symmetrically arranged at the inner sides of the outer lock arms, a second arc bulge is arranged in the middle of each inner lock arm, the second arc bulge is matched with the first arc to expand the inner lock arms, the free ends of the inner lock arms are provided with first recesses facilitating insertion of the male connector, the free ends of the outer lock are provided with return hooks, hook tips of the return hooks point to the inner sides of the lock springs, and second recesses facilitating insertion of the, the back hook and the inner lock arm are arranged in a staggered mode, grooves for locking the back hook for the first time are symmetrically formed in the middle of the lock sleeve, bulges for locking the back hook for the second time are arranged at the tail end of the sliding groove, and the bulges are symmetrically arranged on two sides of the lock sleeve.

2. The double-confirming quick connector as claimed in claim 1, wherein: the root of the inner locking arm is provided with a rib plate, the rib plates are symmetrically arranged on the inner side of the inner locking arm, a clamping groove is formed between the two rib plates, and the lock sleeve is provided with a limiting block matched with the clamping groove.

3. The double-confirming quick connector as claimed in claim 1, wherein: the upper side of the hook point of the back hook is provided with a boss, and the lower side of the hook point is provided with a cambered surface.

4. The double-confirming quick connector as claimed in claim 1, wherein: the protrusion is provided with an inclined plane which is convenient for the return hook to slide.

5. The double-confirming quick connector as claimed in claim 1, wherein: the lock spring is made of metal materials or hard plastics.

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