CN108571631B - Quick connector - Google Patents
Quick connector Download PDFInfo
- Publication number
- CN108571631B CN108571631B CN201810620694.7A CN201810620694A CN108571631B CN 108571631 B CN108571631 B CN 108571631B CN 201810620694 A CN201810620694 A CN 201810620694A CN 108571631 B CN108571631 B CN 108571631B
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- Prior art keywords
- lock catch
- positioning
- connector
- male connector
- main body
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- 210000000078 claw Anatomy 0.000 claims abstract description 65
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a quick connector, and relates to the technical field of automobile manufacturing. According to the invention, the positioning table is arranged on the female joint main body, the guide protrusion is arranged on the outer side surface of the positioning table, the distance from the upper supporting surface to the lower end surface of the guide protrusion is gradually increased and then gradually decreased, so that the outer edge of the upper supporting surface is favorably deflected inwards, the contact area between the positioning claw and the upper supporting surface is favorably reduced, and even if the amplitude of the outer supporting leg of the male joint is smaller, the positioning claw on the supporting leg can smoothly slide to the guide protrusion from the upper supporting surface, so that a worker can smoothly push the connecting lock catch downwards, and the positioning claw of the connecting lock catch smoothly moves to the locking position along the guide protrusion, thereby reducing the assembly difficulty of the quick connector and the male joint.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a quick connector.
Background
Automobiles, such as fuel systems, include a number of pipes which are typically connected to a male connector by a connector. One of the pipelines is fixedly connected with the connecting joint, the other pipeline is fixedly connected with the male joint, the male joint is inserted into the connecting joint, and a boss arranged on the male joint is buckled with the inside of the connecting joint.
In the prior art, the connector includes: a female connector body and a connecting shackle; the female connector body is provided with a receiving channel for inserting the male connector, and is provided with two openings which are oppositely arranged, the two openings are communicated with the receiving channel, and a thrust platform is formed on the female connector body and between the two openings; the connecting lock catch is provided with two supporting legs, and when the connecting lock catch is in an initial position, the two supporting legs are supported on the inner side wall of the thrust platform, which is communicated with the channel; when the connector is used, the male connector is inserted into the female connector main body, the male connector boss stretches out the two supporting legs of the connecting lock catch, the connecting lock catch is pushed downwards by a worker, and the connecting lock catch supporting legs move downwards along the opening until the part of the connecting lock catch supporting legs stretches out of the opening in the female connector main body, so that the male connector is connected with the connector.
However, in the prior art, production errors exist in the production process of the connector and the male connector, for example, when the outer diameter error of the male connector boss is larger, after the male connector is inserted into the female connector main body, the male connector boss outwards expands the supporting legs to a smaller extent, so that the supporting legs are difficult to separate from the thrust platform, a worker cannot downwards push the connecting lock catch, and the assembly difficulty of the connector and the male connector is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the quick connector, which can facilitate a worker to push down the connecting lock catch smoothly, and reduce the assembly difficulty of the quick connector and the male connector.
The invention provides a quick connector, comprising: a female connector body and a connecting lock catch; the female connector main body is provided with a receiving channel for receiving the male connector, the female connector main body is also provided with two first openings which are oppositely arranged, and the lower part of each first opening is provided with a positioning table; the positioning table includes: the positioning table is outwards protruded along the radial direction of the female joint main body and the outer side surface away from the receiving channel to form a guide protrusion, and the outwards protruded distance of the guide protrusion is gradually increased and then gradually decreased from the upper supporting surface to the lower end surface; the connecting lock catch is provided with two supporting legs, the upper ends of the two supporting legs are connected through a connecting part, and the lower ends of the two supporting legs are respectively provided with a positioning claw extending inwards along the radial direction of the female joint main body.
When the positioning claw is supported on the upper supporting surface of the positioning table, the connecting lock catch is positioned at the initial position for receiving the male connector; when the positioning claw moves downwards to extend out of the first opening and abuts against the lower end face, the connecting lock catch is positioned at a locking position for locking the male connector in the female connector main body; the guide projection is used for guiding the positioning claw to move from the initial position to the locking position when the connecting part is acted by external force.
Optionally, the guide protrusion includes: the female connector comprises an upper inclined section and a lower inclined section, wherein the upper inclined section is from top to bottom and extends outwards along the radial direction of the female connector body, and the lower inclined section is connected with the bottom end of the upper inclined section, extends inwards along the radial direction of the female connector body from top to bottom.
Optionally, the inclination of the upper inclined section is smaller than the inclination of the lower inclined section.
Optionally, a transition section is connected between the upper inclined section and the lower inclined section.
Optionally, a surface of the guide protrusion for contacting with the positioning claw is an arc surface.
Optionally, a reinforcing part is arranged between the two positioning tables, and a space is reserved between the reinforcing part and the positioning tables.
Optionally, the lower end surface of the positioning table is a plane.
Optionally, the lower end surface is disposed parallel to the upper support surface.
Optionally, the lower end face and the upper support face are flush along the inner side of the radial direction of the female joint body, and the length of the projection of the lower end face on the plane of the upper support face is greater than the length of the upper support face.
Optionally, the positioning claw is disposed at an inner side of the lower end of the supporting leg, and a dismounting claw is disposed at an outer side of the lower end of the supporting leg, and is disposed obliquely outwards from top to bottom along a radial direction of the female joint main body.
Optionally, the connecting portion of the connecting lock catch is further provided with a first protrusion, the female connector main body is provided with a slide, the slide extends along a direction perpendicular to the receiving channel, and the first protrusion is slidably arranged in the slide.
Optionally, the connection lock catch is further provided with a male connector clamping groove, and the male connector clamping groove is used for being matched with a male connector boss on the male connector so as to clamp the male connector between the connection lock catch and the female connector main body.
According to the quick connector provided by the invention, the positioning table is arranged on the female connector main body, the guide protrusion is arranged on the outer side surface of the positioning table, the distance from the guide protrusion to the outer side surface of the guide protrusion increases gradually and then decreases gradually from the upper supporting surface to the lower end surface, so that the outer edge of the upper supporting surface is beneficial to inward deflection, the contact area between the positioning claw and the upper supporting surface is beneficial to reduction, and even if the amplitude of the supporting leg of the male connector outwards-opening is smaller, the positioning claw on the supporting leg can smoothly slide to the guide protrusion from the upper supporting surface, so that a worker can smoothly push the connecting lock catch downwards, and the positioning claw of the connecting lock catch smoothly moves to the locking position along the guide protrusion, and the assembly difficulty of the quick connector and the male connector is further reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a quick connector according to the present embodiment;
fig. 2 is a schematic structural view of a male connector connected to the quick connector according to the present embodiment;
fig. 3 is a schematic view illustrating a state of the quick connector provided in the present embodiment when the connecting lock catch is located at the initial position;
fig. 4 is a schematic view of a state of the quick connector provided in the present embodiment when the connecting lock catch is located at the locking position;
fig. 5 is a schematic partial view of the quick connector provided in the present embodiment when the female connector body and the male connector are locked by the connecting lock catch;
fig. 6 is a schematic diagram of a connection lock catch in the quick connector according to the first embodiment;
fig. 7 is a schematic diagram II of a connection lock catch in the quick connector provided in this embodiment;
fig. 8 is a schematic structural diagram of a positioning table in the quick connector according to the present embodiment;
fig. 9 is a schematic diagram showing a state of the quick connector provided in the present embodiment when the connecting lock catch is pushed downward;
fig. 10 is a second schematic diagram of a state of the quick connector provided in the present embodiment when the connecting lock catch is pushed downward.
Reference numerals illustrate:
1-a female connector body; 1 a-male connector connection end; 1 b-a pipeline connecting end; 1 c-a receive channel; 11-a second opening; 12-a support table; 13-a first opening; 14-positioning table; 15-a third opening; 16-reinforcements; 17-fourth boss; 18-a slideway;
141-an upper support surface; 142-guide protrusions; 143-lower end face;
1421-upper inclined section; 1422-lower inclined section; 1423-transition section;
2-connecting a lock catch; 21-a connection; 22-supporting legs; 23-positioning claws; 24-removing the claw;
211-first protrusions; 212-a male connector clamping groove;
221-a second boss; 222-a third boss;
3-male linker; 31-male connector boss.
Specific embodiments of the present invention have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The following embodiments and features of the embodiments may be combined with each other without conflict.
The terms "upper" and "lower" are used to describe the relative positional relationship of the respective structures in the drawings, and are merely for convenience of description, not to limit the scope of the invention, and the change or adjustment of the relative relationship is considered to be within the scope of the invention without substantial change of technical content.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are merely used for convenience in describing the various elements and are not to be construed as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In addition, in the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Fig. 1 is a schematic structural diagram of a quick connector according to the present embodiment; fig. 2 is a schematic structural view of a male connector connected to the quick connector according to the present embodiment.
Fig. 3 is a schematic view illustrating a state of the quick connector provided in the present embodiment when the connecting lock catch is located at the initial position; fig. 4 is a schematic view of a state of the quick connector provided in the present embodiment when the connecting lock catch is located at the locking position; fig. 5 is a schematic partial view of the quick connector provided in the present embodiment when the connection lock locks the female connector body and the male connector.
Fig. 6 is a schematic diagram of a connection lock catch in the quick connector according to the first embodiment; fig. 7 is a schematic diagram II of a connection lock catch in the quick connector provided in this embodiment;
referring to fig. 1-7, the present embodiment provides a quick connector, which includes: the female connector body 1 and the connecting lock catch 2.
Wherein the direction pointed by arrow a in fig. 3-4 is upward; the direction pointed by arrow B is downward.
The female joint body 1 is a hollow connecting pipe. The connecting pipe has a male joint connection end 1a for connection with the male joint 3, the male joint connection end 1a being formed with a receiving channel 1c for receiving the male joint 3; the connecting line also has a line connection 1b for connection to a line in a motor vehicle line, such as a fuel system or a ventilation system, the line connection 1b being arranged in communication with the male connection end 1a, and the line connection 1b forming a flow-through channel. The male connector 3 also has a flow-through channel; after the male connector 3 is inserted into the male connector connecting end 1a, the flow passage of the male connector 3 is communicated with the flow passage formed by the pipeline connecting end 1 b.
The connecting pipe may have one or more pipe connection ends 1b, and/or the connecting pipe may have one or more male joint connection ends 1a, and the number of the pipe connection ends 1b and the male joint connection ends 1a in the connecting pipe is not particularly limited herein, and may be specifically set according to actual needs.
The connection lock 2 is mainly used for locking the male connector 3 to the female connector body 1. The connection shackle 2 has an initial position for releasing the male connector 3, at which time the male connector 3 can be entered into the receiving channel 1c of the female connector body 1 or removed from the receiving channel 1c of the female connector body 1; the connection shackle 2 also has a locking position for locking the male connector 3, in which the male connector 3 is fixed to the female connector body 1, and fluid can pass through a flow passage formed by the male connector 3 and the female connector body 1.
The connecting lock catch 2 is provided with two supporting legs 22, the upper ends of the two supporting legs 22 are connected through a connecting part 21, the lower ends of the two supporting legs 22 are respectively provided with a positioning claw 23, and the two positioning claws 23 extend oppositely.
The female connector main body 1 is provided with two second openings 11 which are oppositely arranged, a supporting table 12 is arranged between the two second openings 11, the second openings 11 are used for accommodating a connecting part 21 of the connecting lock catch 2 when the connecting lock catch 2 is in a locking position, and the connecting part 21 can be further erected on the supporting table 12 so as to limit the connecting lock catch 2 to continuously move downwards; meanwhile, the supporting table 12 is also used for improving the strength of the female joint main body 1, and is beneficial to prolonging the service life of the female joint main body 1. Wherein the two legs 22 of the connecting shackle 2 are also inserted in the two second openings 11, respectively.
The female connector main body 1 is also provided with two first openings 13 which are oppositely arranged, and the first openings 13 are positioned below the second openings 11; a positioning table 14 is arranged below both first openings 13. The positioning table 14 forms an upper support surface 141 toward the upper end of the receiving channel 1c; the upper supporting surface 141 may be a plane or an inclined surface or an arc surface, etc., as long as it can perform its function of supporting the positioning pawl 23 located at the initial device; the positioning table also has a lower end surface and a side surface connected between the upper support surface and the lower end surface.
Wherein, a third opening 15 is formed between the two positioning tables 14 to facilitate injection molding of the female connector body 1, and at the same time, interference of the male connector 3 in and out of the receiving channel 1c can be better avoided. At this time, a reinforcing part 16 may be disposed between the two positioning tables 14 to improve the strength of the female joint main body 1, which is beneficial to prolonging the service life of the female joint main body 1; wherein, a third opening 15 is formed between the two positioning tables 14 and the reinforcing part 16.
In this embodiment, when the positioning claw 23 is supported on the upper supporting surface 141 of the positioning table 14, the connecting shackle 2 is located at the initial position for releasing the male connector 3, as shown in fig. 3; when the positioning pawl 23 moves downward to protrude from the second opening 11 and abuts against the lower end face 143 of the positioning table 14, the connection lock catch 2 is located at a locking position for locking the male connector 3 to the female connector body 1, as shown in fig. 4.
The positioning tables 14 are provided with guide protrusions 142 along the radial direction of the female joint main body 1 and away from the outer side surface of the receiving channel 1c, that is, the side surfaces of the two positioning tables 14 facing away from each other are provided with guide protrusions 142; the guide projection 142 is provided to protrude outward from the upper support surface 141. The guide projection 142 is used to guide the positioning pawl 23 to move between the initial position and the lock position. Wherein the distance the guide protrusion 142 protrudes outward is in a trend of increasing and decreasing from the upper supporting surface 141 to the lower end surface 143.
In the present embodiment and the following embodiments, the direction toward the receiving channel 1c is the inner direction, and the direction away from the receiving channel 1c is the outer direction.
In this embodiment, by forming the guide protrusion 142 on the outer side surface of the positioning table 14, the area of the upper supporting surface 141 is advantageously reduced, and the contact area between the positioning claw 23 and the upper supporting surface 141 is reduced, that is, the outer edge of the upper supporting surface is advantageously deflected inward, so that even when the outer diameter of the male joint boss 31 is small, that is, the width of the outward-opening leg 22 is small, the positioning claw 23 on the leg 22 can smoothly slide from the upper supporting surface 141 to the guide protrusion 142, and thus the worker can smoothly push the connection shackle 2 downward. Wherein a worker can apply a downward pushing force through the connection portion 21 of the connection locker 2.
Also, since the guide projection 142 is provided to protrude toward the first opening 13 toward the upper support surface 141, the positioning pawl 23 of the connection locker 2 can be supported on the guide projection 142 after the male joint boss 31 spreads the leg 22 of the connection locker 2. When the male connector 3 is inserted in place, the male connector 3 gradually moves down to the locking position along the guide projection 142 by an external downward pushing force applied by, for example, a worker.
In this embodiment, the surface of the guide protrusion 142 contacting the positioning claw 23 is a guide surface, and the guide surface and the upper support surface 141 can be smoothly transited to reduce the abrasion to the positioning claw 23.
Alternatively, the guide mask body may be an arcuate face; at this time, the maximum distance between the two guiding surfaces is located between the upper supporting surface 141 and the lower end surface 143 of the positioning table 14 and is close to the lower end surface, so as to facilitate the connection lock catch 2 to be pushed downward by a worker, and the positioning claws 23 on the supporting legs 22 of the connection lock catch 2 are gradually and outwardly opened, so that the stress distribution of the connection lock catch 2 can be improved, the supporting legs 22 are protected from being damaged, and the service life of the connection lock catch 2 is prolonged.
In addition, two first protrusions 211 are further disposed on the connection lock catch 2 in the present embodiment, and the first protrusions 211 may be disposed on the connection portion 21 of the connection lock catch 2; accordingly, the female connector body 1 is provided with two slide ways 18, the slide ways 18 extending in a direction perpendicular to the direction in which the male connector 3 enters and exits the receiving passage 1c, and two first protrusions 211 are slidably provided in the two slide ways 18, respectively, to reliably define the sliding direction of the connecting shackle 2.
The side of the connection latch 2 facing away from the first protrusion 211 may be further provided with a male connector catch 212, when the male connector 3 enters the receiving channel 1c of the female connector body 1 and the male connector boss 31 is aligned with the male connector catch 212, the male connector 3 is inserted in place, and at this time, when the connection latch 2 is pushed down to the locking position, the male connector boss 31 is sandwiched between the connection latch 2 and the female connector body 1, thereby locking the male connector 3 on the female connector body 1.
When the first protrusion 211 is located on the side of the connection lock catch 2 away from the pipe connection end 1b of the female connector body 1, the Yang Jietou clamping groove 212 is located on the side facing the pipe connection end 1b of the female connector body 1.
The opposite side of the leg 22 of the connecting shackle 2 may be further provided with a second boss 221, and when the male connector 3 enters the receiving channel 1c, the male connector boss 31 abuts against the second boss 221 on the leg 22 and pushes outward against the second boss 221 to outwardly open the leg 22. The distance between the two second bosses 221 may be gradually reduced from top to bottom, that is, the opposite second boss sidewalls of the two second bosses 221 are inclined surfaces or curved surfaces, so that after the male connector 3 is inserted in place, the two second bosses 221 are smoothly spread, that is, the two legs 22 are spread; and, the minimum distance between the two second bosses 221 is smaller than the outer diameter of the male coupling boss 31.
A third boss 222 is further arranged on the side, facing away from the supporting leg 22; the female joint main body 1 is provided with a fourth boss 17, the upper end of the fourth boss 17 is used for enclosing a second opening 11, and the lower end of the fourth boss 17 is used for enclosing a first opening 13; when the connecting lock catch 2 moves back from the locking position under the action of external force, the third boss 222 on the supporting leg 22 is used for propping against the fourth boss 17 so as to prevent the connecting lock catch 2 from being separated from the female connector main body 1; when the external force is removed, the connecting shackle 2 moves downward by its own weight until the positioning claw 23 of the connecting shackle 2 is supported on the upper support surface 141 of the positioning table 14.
The upper end surface of the third boss 222 is used to abut against the lower end surface of the fourth boss 17, and the upper end surface of the third boss 222 and the lower end surface of the fourth boss 17 may be both planar; the third boss side wall facing away from the third boss 222 may be inclined from top to bottom and may be an inclined plane or an arc plane, so as to facilitate the connection lock catch 2 to smoothly enter the female connector main body 1 and be in an initial position.
According to the quick connector provided by the embodiment, the positioning table 14 is arranged on the female connector main body 1, the guide protrusion 142 is arranged on the outer side surface of the positioning table, the outwards protruding distance of the guide protrusion 142 is gradually increased and then gradually decreased from the upper supporting surface 141 to the lower end surface 143, so that the outer edge of the upper supporting surface 141 is favorably deflected inwards, the contact area between the positioning claw 23 and the upper supporting surface 141 is favorably reduced, and therefore, even if the amplitude of the supporting leg 22 is smaller when the male connector 3 is outwards spread out, the positioning claw 23 on the supporting leg 22 can smoothly slide to the guide protrusion 142 from the upper supporting surface 141, so that a worker can smoothly downwards push the connecting lock catch 2, and the positioning claw 23 of the connecting lock catch 2 smoothly moves to the locking position along the guide protrusion 142, and the assembly difficulty of the quick connector and the male connector 3 is reduced.
Fig. 8 is a schematic structural diagram of a positioning table in the quick connector according to the present embodiment; fig. 9 is a schematic diagram showing a state of the quick connector provided in the present embodiment when the connecting lock catch is pushed downward; fig. 10 is a second schematic diagram of a state of the quick connector provided in the present embodiment when the connecting lock catch is pushed downward. Wherein the direction pointed by arrow a in fig. 8-10 is upward; the direction pointed by arrow B is downward.
Referring to fig. 8-10 with continued reference to fig. 1-7, the guide projection 142 optionally includes: an upper sloped section 1421 extending from top to bottom and outwardly, and a lower sloped section 1422 extending from top to bottom and inwardly, the upper sloped section 1421 being located above the lower sloped section 1422. That is, the guide surface of the guide projection 142 has an upper inclined surface and a lower inclined surface.
After the male connector boss 31 is inserted into place and the leg 22 of the connection lock catch 2 is spread out, the positioning pawl 23 is disengaged from the upper supporting surface 141 of the positioning table 14, as shown in fig. 9, at which time, a worker may apply a downward pushing force to the connection lock catch 2 to push the connection lock catch 2 downward, the positioning pawl 23 on the leg 22 of the connection lock catch 2 gradually moving downward along the upper inclined surface of the upper inclined surface section 1421; after the positioning pawl 23 on the leg 22 of the connecting shackle 2 passes over the upper ramp section 1421, it will continue to gradually transition along the lower inclined surface of the lower ramp section 1422 to the lower end of the positioning stage 14, as shown in fig. 10.
In this way, the guide protrusion 142 can guide the connection lock catch 2 to smoothly move from the initial position to the locking position, so that the middle zone between the initial position and the locking position is effectively avoided, and reliable locking of the connection lock catch 2 to the male connector 3 is realized; and meanwhile, the stress distribution of the connecting lock catch 2 can be improved, and the service life of the connecting lock catch 2 can be prolonged.
And, when the connecting lock catch 2 is retracted from the locking position, an outward force is applied to the positioning claw 23, the positioning claw 23 can also be rapidly separated from the lower end of the positioning table 14 and slide to the lower inclined surface, at this time, an upward lifting force is applied to the connecting lock catch 2, and the positioning claw 23 can gradually move up along the lower inclined surface and transition to the upper supporting surface 141 of the positioning table 14 along the upper inclined surface, so that the function of avoiding the clamping stagnation of the positioning claw 23 in the middle zone between the initial position and the locking position, and the function of improving the stress distribution of the connecting lock catch 2 and prolonging the service life of the connecting lock catch 2 can be realized.
Optionally, a transition section 1423 may be connected between the upper inclined section 1421 and the lower inclined section 1422, and the transition section 1423 may have a smooth curved surface, so that the positioning claw 23 can smoothly move from the upper inclined surface to the lower inclined surface, and wear on the positioning claw 23 is reduced, and meanwhile, the transition section 1423 is also beneficial to injection molding of the positioning boss.
Optionally, the inclination of the upper sloped section 1421 is less than the inclination of the lower sloped section 1422. The inclination of the upper inclined section 1421 is the included angle α between the upper inclined surface of the upper inclined section 1421 and the ground plane, wherein the direction of pushing the connecting lock catch 2 is taken as the vertical direction; the inclination of the lower inclined section 1422 refers to an angle β between the lower inclined surface of the lower inclined section 1422 and the ground plane. Wherein, the included angles all refer to positive angles.
By setting the inclination of the upper inclined section 1421 relatively smaller, the positioning claw 23 of the connection lock catch 2 can gradually move downwards along the upper inclined surface, and the supporting leg 22 of the connection lock catch 2 can be gradually and relatively slowly spread, so that the stress distribution of the connection lock catch 2 can be better improved, and the connection lock catch 2 is prevented from being broken due to the stress concentration phenomenon at the connection position of the supporting leg 22 and the connection part 21. By setting the inclination of the upper inclined section 1421 relatively large, the guide function of the upper inclined section 1421 is realized, and the distance that the positioning claw 23 moves along the lower inclined surface is also facilitated to be shortened, so that the positioning claw 23 can rapidly move to the lower end of the positioning table 14 and abut against the lower end surface of the positioning table 14, and the rapid return of the connecting lock catch 2 is also facilitated when the connecting lock catch 2 returns.
Alternatively, the lower end face 143 of the positioning table 14 is a plane; the positioning claw 23 may be cubic, and the upper end surface of the positioning claw 23 may be planar, and at this time, the positioning claw 23 may be in surface contact with the positioning table 14, so that a larger contact area between the positioning claw 23 and the positioning table 14 may be provided, thereby positioning the connection shackle 2 in its locking position more reliably.
The upper supporting surface 141 may be planar, that is, parallel to the ground plane, that is, the upper supporting surface 141 may be parallel to the lower end surface 143 of the positioning table 14; at this time, the lower end surface of the positioning claw 23 may be planar, and when the connecting shackle 2 is in the initial state, the positioning claw 23 may be in contact with the upper supporting surface 141 through surface contact, which is beneficial to improving the wear of the positioning claw 23.
Optionally, the lower end surface 143 of the positioning table 14 extends outwards to form an upper supporting surface 141, that is, the lower end surface 143 of the positioning table 14 and the upper supporting surface 141 are flush with each other along the inner side of the radial direction of the female joint main body 1, and the projected length of the lower end surface 143 on the plane on which the upper supporting surface 141 is located is greater than the length of the upper supporting surface 141, so that the guiding function of the upper inclined section 1421 is achieved, and the distance that the positioning claw 23 moves along the lower inclined surface is shortened, so that the positioning claw 23 can quickly move to the lower end of the positioning table 14 and abut against the lower end surface of the positioning table 14, and the quick return of the connecting lock catch 2 is facilitated when the connecting lock catch 2 returns. In addition, the contact area between the upper end face of the positioning claw 23 and the positioning table 14 is increased, so that the positioning claw 23 is not easy to fall off under the non-dismantling effect during locking, and the reliability of the positioning claw is increased.
Alternatively, the positioning claw 23 is provided inside the lower end of the leg 22; the outer sides of the lower ends of the two legs 22 are also provided with dismounting claws 24, and the dismounting claws 24 are arranged obliquely from top to bottom so as to facilitate the return operation of the connecting lock catch 2.
At this time, when the connecting shackle 2 returns, an outward force may be applied to the dismounting claw 24 so that the positioning claw 23 can be quickly moved from the lower end face 143 to the lower inclined face; an upward force is then applied to the positioning pawl 23 to transition the positioning pawl 23 along the lower inclined surface to the upper inclined surface for final movement to the upper support surface 141.
In addition, the outer surface of the dismounting claw 24 can be flush with the outer surface of the female connector body 1, which is close to the dismounting claw 24, so that the attractiveness of the quick connector is improved, and the accidental impact of external force on the positioning claw is prevented; at this time, an outward force may be applied to the dismounting claw 24 through the third opening 15.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A quick connector, comprising: a female connector body and a connecting lock catch;
the female connector main body is provided with a receiving channel for receiving the male connector, the female connector main body is also provided with two first openings which are oppositely arranged, and the lower part of each first opening is provided with a positioning table;
the positioning table includes: the positioning table is outwards protruded along the radial direction of the female joint main body and the outer side surface away from the receiving channel to form a guide protrusion, and the outwards protruded distance of the guide protrusion is gradually increased and then gradually decreased from the upper supporting surface to the lower end surface;
the connecting lock catch is provided with two supporting legs, the upper ends of the two supporting legs are connected through a connecting part, and the lower ends of the two supporting legs are respectively provided with a positioning claw extending inwards along the radial direction of the female joint main body;
when the positioning claw is supported on the upper supporting surface of the positioning table, the connecting lock catch is positioned at the initial position for receiving the male connector; when the positioning claw moves downwards to extend out of the first opening and abuts against the lower end face, the connecting lock catch is positioned at a locking position for locking the male connector in the female connector main body;
the guide protrusion is used for guiding the positioning claw to move from the initial position to the locking position when the connecting part is acted by external force;
the guide projection includes: an upper inclined section extending from top to bottom and outward in the radial direction of the female joint body, and a lower inclined section connected to the bottom end of the upper inclined section and extending from top to bottom and inward in the radial direction of the female joint body;
the inclination of the upper inclined section is smaller than the inclination of the lower inclined section;
a transition section is connected between the upper inclined section and the lower inclined section;
the surface of the guide bulge, which is used for being contacted with the positioning claw, is an arc-shaped surface;
the connecting lock catch is further provided with a male connector clamping groove, and the male connector clamping groove is used for being matched with a male connector boss on the male connector so as to clamp the male connector between the connecting lock catch and the female connector main body.
2. The quick connector of claim 1, wherein a reinforcing portion is disposed between two of the positioning tables, and a space is provided between the reinforcing portion and the positioning tables.
3. The quick connector of claim 2, wherein the lower end surface of the positioning table is planar.
4. A quick connector according to claim 3, wherein the lower end face is disposed parallel to the upper support face.
5. The quick connector of claim 4, wherein the lower end face and the upper support face are flush along the inner side of the radial direction of the female connector body, and the length of the projection of the lower end face on the plane of the upper support face is greater than the length of the upper support face.
6. The quick connector according to claim 1, wherein the positioning claw is provided on an inner side of a lower end of the leg, and a dismounting claw is further provided on an outer side of the lower end of the leg, and the dismounting claw is provided obliquely outward from top to bottom along a radial direction of the female connector main body;
and/or, the connecting part of the connecting lock catch is also provided with a first bulge, the female connector main body is provided with a slide way, the slide way extends along the direction vertical to the receiving channel, and the first bulge is arranged in the slide way in a sliding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810620694.7A CN108571631B (en) | 2018-06-15 | 2018-06-15 | Quick connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810620694.7A CN108571631B (en) | 2018-06-15 | 2018-06-15 | Quick connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108571631A CN108571631A (en) | 2018-09-25 |
| CN108571631B true CN108571631B (en) | 2024-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810620694.7A Active CN108571631B (en) | 2018-06-15 | 2018-06-15 | Quick connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108571631B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483179B (en) * | 2021-07-05 | 2022-06-17 | 重庆溯联塑胶股份有限公司 | Mistake-proof double-locking quick connector |
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| CN208503735U (en) * | 2018-06-15 | 2019-02-15 | 廊坊舒畅汽车零部件有限公司 | Fast connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050236833A1 (en) * | 2004-04-23 | 2005-10-27 | Poirier David M | Tube lock quick connector |
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| WO2003004922A1 (en) * | 2001-07-06 | 2003-01-16 | Sanoh Kogyo Kabushiki Kaisha | Joint for piping |
| CN1676982A (en) * | 2004-03-31 | 2005-10-05 | Ti集团车辆***有限责任公司 | Secondary latch/verifier for a quick connector |
| CN102818087A (en) * | 2005-06-15 | 2012-12-12 | Ti集团车辆***有限责任公司 | Pull tab verifier assembly for quick connectors |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108571631A (en) | 2018-09-25 |
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