KR102586682B1 - Quick connector - Google Patents

Abstract

The quick connector of the present invention includes a housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; A locking portion is formed, and an insertion guide protruding from the locking portion toward the inlet side of the insertion groove is formed. The locking portion is inserted into the communication hole, so that the lower end of the locking portion is disposed in the insertion groove, and a first first coupled to the housing. fixing part; and a second fixing part extending from the communication hole of the housing toward the fixing member and having a free end disposed above the insertion guide. It relates to a quick connector that can be applied to a low-pressure line in a vehicle's fuel supply line, has a simple structure, is easy to manufacture, and is easy to connect and disconnect.

Description

Quick connector {Quick connector}

The present invention relates to a quick connector that can easily connect fuel lines that allow the parts constituting the fuel supply system of a vehicle to communicate with each other.

In general, devices such as vehicles that are driven by liquid fuel, such as gasoline engines or diesel engines, are equipped with a fuel tank in which fuel is stored. A fuel pump module is installed in the fuel tank, and the fuel pump module is connected to the engine through a fuel supply line. It is connected and configured to supply the fuel stored inside the fuel tank to the engine. In addition, the vehicle's fuel supply system consists of various parts such as filters and valves, and each part is connected using hoses and quick connectors.

Here, the fuel supply line can be divided into a high-pressure side line where the pressure of the fuel flowing is relatively high and a low-pressure side line where the pressure of the fuel is relatively low.

However, conventionally, quick connectors with a complex structure are used to prevent fuel leakage not only in the high-pressure line but also in the low-pressure line. Accordingly, more design than necessary is applied to the low-pressure line, increasing manufacturing costs and quick connectors. The size is relatively large, making compact configuration difficult.

KR 2018-0043975 A (2018.05.02)

The present invention was created to solve the problems described above, and the object of the present invention is that it can be applied to the low-pressure side line in the fuel supply line of a vehicle, is formed in a simple structure, is easy to manufacture, and can be combined and separated. The goal is to provide an easy-to-use quick connector.

The quick connector of the present invention for achieving the above-described object includes: a housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; and a locking portion is formed, and an insertion guide protruding from the locking portion toward the inlet side of the insertion groove is formed, wherein the locking portion is inserted into the communication hole and the lower end of the locking portion is disposed at a position corresponding to the insertion groove, and the housing A first fixing part coupled to; It can be done including.

Additionally, the first fixing part may be rotatably coupled to the housing or may be formed to be elastically deformable.

In addition, the first fixing part has one side connected to a lever extending from the top of the locking part in the opposite direction from which the insertion guide protrudes, and a part where the locking part and the lever are connected, and the other side is arranged to be spaced apart from the lever. It may further include a coupling part coupled to the housing.

In addition, a pair of coupling holes are formed to be spaced apart from each other in the housing, and a pair of engaging protrusions corresponding to the pair of engaging holes are formed in the engaging portion of the first fixing part, and the engaging protrusions are inserted into the engaging holes. can be combined.

Additionally, the quick connector of the present invention may further include an elastic member interposed between the housing and the lever.

Additionally, a fixing protrusion is formed in the housing, and one end of the elastic member may be inserted into the fixing protrusion to be coupled.

Additionally, the height of the portion corresponding to the free end of the lever may be formed to be lower than that of the remaining portion of the fixing protrusion.

Additionally, the insertion guide of the first fixing part may include a main guide and a pair of auxiliary guides spaced apart from each other in the circumferential direction of the main guide.

Additionally, the locking portion of the first fixing part may be formed so that the locking height becomes gradually smaller as it moves from the main guide side to the auxiliary guide side.

In addition, the quick connector of the present invention may have a resting groove with a larger diameter than the insertion groove formed on the inlet side of the insertion groove of the housing, and may further include an O-ring and a spacer inserted into the resting groove.

In addition, in the opposite direction in which the male connector is inserted, an expansion portion is formed with an inner diameter gradually increasing from the seating groove toward the entrance, and a support rib corresponding to the inner diameter of the seating groove is formed on the lower side of the expansion portion to protrude radially inward. It can be.

In addition, the quick connector of the present invention may further include a male connector that has a step protruding from the outer peripheral surface, is inserted into the insertion groove of the housing, and is engaged with the locking portion of the first fixing part.

In addition, it may further include a second fixing part extending from the communication hole of the housing toward the first fixing part, and the free end of which is disposed on an upper side of the insertion guide.

Additionally, the housing may be formed in a form in which both side walls of a portion corresponding to the free end of the lever are partially removed.

The quick connector of the present invention has a simple yet reliable coupling structure, and has the advantage of being applied to a low-pressure line where the pressure of the fuel flowing in the fuel supply line of a vehicle is relatively low, thereby preventing fuel leakage.

And because it has a simple structure, it is easy to manufacture and can reduce manufacturing costs.

In addition, since the quick connector is easy to attach and detach, it has the advantage of being easy to use even in places where the space where the fuel line is placed is narrow.

1 to 3 are an assembled perspective view, an exploded perspective view, and a front cross-sectional view showing the quick connector according to the first embodiment of the present invention.
Figure 4 is a front cross-sectional view showing the quick connector in a state in which the male connector is inserted and coupled according to the first embodiment of the present invention.
Figure 5 is a perspective view showing a state in which the male connector according to the first embodiment of the present invention is hung on the first fixing part.
Figure 6 is a left side view showing the quick connector according to the first embodiment of the present invention.
Figure 7 is a left cross-sectional view showing a state in which the male connector according to the first embodiment of the present invention is inserted and coupled.
Figures 8 and 9 are an assembled perspective view and an exploded perspective view showing the quick connector according to the second embodiment of the present invention, and a front cross-sectional view showing the quick connector in a state in which the male connector is inserted and coupled.

Hereinafter, the quick connector of the present invention will be described in detail with reference to the attached drawings.

<Example 1>

1 to 3 are an assembled perspective view, an exploded perspective view, and a front cross-sectional view showing the quick connector according to the first embodiment of the present invention, and Figure 4 shows the male connector according to the first embodiment of the present invention in an inserted and coupled state. This is a front cross-sectional view showing the quick connector.

As shown, the quick connector according to the first embodiment of the present invention may be largely composed of a housing 100 and a first fixing part 200, and an elastic member 400, an O-ring 500, and a spacer ( 600), and may further include a male connector 700.

The housing 100 has a concave insertion groove 110 formed on one side in the longitudinal direction into which the male connector 700 is inserted, and a connection port 160 is extended on the other side to form an insertion groove 110 and a connection port ( The internal flow path of 160) may be communicated. In addition, a seating groove 130 larger than the diameter of the insertion groove 110 is formed in some areas in the longitudinal direction from the entrance side of the insertion groove 110, and an O-ring 500 and a spacer 600 are formed in the seating groove 130. can be inserted in order. In addition, the housing 100 is formed with a communication hole 120 concave downward from the upper side in the height direction, so that the communication hole 120 and the insertion groove 110 communicate with each other. In addition, a coupling hole 140 penetrating both sides in the width direction may be formed on both sides of the housing 100 on the upper side of the housing 100, and on the opposite side of the communication hole 120 in the longitudinal direction based on the coupling hole 140. A fixing protrusion 150 may be formed to protrude upward from the upper surface.

The first fixing part 200 may include a locking part 210 and an insertion guide 220, and may further include a lever 230 and a coupling part 240. The locking portion 210 may be inserted into the communication hole 120 from the top of the housing 100 to the bottom so that the locking portion 210 may be disposed within the communication hole 120 . And the lower end of the catching portion 210 may be located at a height corresponding to the upper end of the insertion groove 110 in the height direction. Additionally, the insertion guide 220 may extend from the lower end of the catching portion 210 toward the entrance of the insertion groove 110. Accordingly, the insertion guide 220 may protrude from one side of the locking portion 210. At this time, the lower end of the insertion guide 220 is formed in an upwardly inclined or round shape toward the entrance of the insertion groove 110, so that the male connector 700 can be easily inserted into the insertion groove 110. The lever 230 may extend from the upper end of the locking portion 210 in a direction opposite to the entrance side of the insertion groove 110. The coupling portion 240 is formed in such a way that one side is connected to the portion where the locking portion 210 and the lever 230 are connected and the other side is spaced apart from the lever 230, so that the coupling portion 240 is attached to the housing 100. can be combined And the coupling portion 240 may be formed in various shapes and coupled to the housing 100. As shown as an example, the coupling portion 240 is located on both sides of the horizontal portion spaced apart from the lever 230 in the width direction. The vertical portions may each extend upward, and the vertical portions may be spaced apart from the lever 230 in the width direction. And, the vertical portions of the coupling portion 240 have locking protrusions 241 protruding from the outer side in the width direction, so that the locking protrusions 241 can be inserted into and coupled to the coupling hole 140 of the housing 100. In addition, a partition wall is formed in the housing 100 so that the coupling portions 240 can be inserted at the portion where the coupling hole 140 is formed, and the coupling portion 240 is inserted into the inside surrounded by the partition wall to form the coupling portion 240. ) may not deviate in the longitudinal direction. Additionally, the lower surface of the horizontal portion of the coupling portion 240 may be supported by contacting the upper surface of the housing 100.

Therefore, when the first fixing part 200 presses the lever 230, the coupling part 240 is elastically deformed and the first fixing part 200 is rotated based on the coupling part 240, so that the locking part 210 moves upward. It can be moved, and at this time, the insertion guide 220 pushes up the second fixing part 300 and the second fixing part 300 can be elastically deformed. And when the lever 230 is released, the locking portion 210 moves downward due to elasticity and can be returned to its original position.

The elastic member 400 may be, for example, a compression coil spring. The lower end of the elastic member 400 is inserted into the fixing protrusion 150 of the housing 100, and the upper end may be in contact with the lower surface of the lever 230. . Thus, the lever 230 of the first fixing part 200 can be elastically supported by the elastic member 400. In addition, the fixing protrusion 150 may be formed so that the height of the portion corresponding to the free end side of the lever 230 of the first fixing portion 200 is lower than the height of the remaining portion. As shown as an example, the right side of the fixing protrusion 150 may be formed in a stepped shape with a relatively low height. Therefore, when the lever 230 of the first fixing part 200 is pressed and rotated, the lever 230 can be pressed more deeply and the locking part 210 can be lifted higher. Accordingly, when the lever 230 is pressed, the locking part 210 can be lifted higher. In this state, it may be easy to remove the male connector 700 in the opposite direction in which it was inserted.

The O-ring 500 may be inserted into the seating groove 130 to maintain fluid tightness when the male connector 700 is inserted into the insertion groove 110.

The spacer 600 serves to fix the O-ring 500 so that it does not deviate or move in the longitudinal direction. The spacer 600 is disposed adjacent to the O-ring 500, and the spacer 600 may be disposed rearward of the O-ring 500 in the direction in which the male connector 700 is inserted. In addition, the spacer 600 has locking protrusions 610 protruding from both the upper and lower sides, and a fixing hole 190 corresponding to the locking protrusion 610 is formed in the housing 100, so that the spacer 600 is placed in the seating groove 130. ), the locking protrusion 610 is inserted into the fixing hole 190 so that the spacer 600 can be fixed within the seating groove 130 of the housing 100.

The male connector 700 is formed in a tube shape, and a step 710 may protrude from the outer peripheral surface in a ring shape. Therefore, as shown in FIG. 4, when the male connector 700 is inserted to the end of the insertion groove 110 of the housing 100, the step 710 of the male connector 700 is caught on the catching portion 210 and is easily moved in the opposite direction to which it was inserted. It may not escape. And when inserting the male connector 700 into the insertion groove 110 of the housing 100, the male connector 700 is further inserted while the step 710 of the male connector 700 is in contact with the insertion guide 220. When inserted by pushing inward, the step 710 pushes the locking portion 210 upward, allowing the male connector 700 to be easily inserted. In addition, when separating the male connector 700 while the male connector 700 is inserted into the insertion groove 110 and hung on the locking portion 210, press the lever 230 downward to lock the locking portion 210. The male connector (700) can be easily separated by moving it upward and pulling the male connector (700).

In this way, the quick connector of the present invention is formed with a simple yet reliable coupling structure, and can be applied to the low pressure side line where the pressure of the fuel flowing in the fuel supply line of the vehicle is relatively low, thereby preventing fuel leakage. In addition, because it has a simple structure, it is easy to manufacture and reduces manufacturing costs, and since the quick connector is easy to connect and disconnect, it can be easily used even in places where the space where the fuel line is located is narrow.

Figure 5 is a perspective view showing a state in which a male connector according to an embodiment of the present invention is hung on the first fixing part, Figure 6 is a left side view showing a quick connector according to an embodiment of the present invention, and Figure 7 is a This is a left cross-sectional view showing a state in which a male connector according to an embodiment of the invention is inserted and coupled.

In addition, the insertion guide 220 of the first fixing part 200 may include a main guide 221 and a pair of auxiliary guides 222 spaced apart from each other in the circumferential direction of the main guide 221. That is, the main guide 221 may be formed in the center of the engaging portion 210 in the width direction, and the auxiliary guide 222 may be formed in a position spaced outward from the main guide 221 in the width direction. Additionally, the auxiliary guides 222 may be arranged lower than the main guide 221 in the height direction. Therefore, when the male connector 700 is inserted into the insertion groove 110, the locking portion 210 can be lifted in a more balanced manner, making insertion of the male connector 700 easier.

In addition, the locking portion 210 of the first fixing part 200 may be formed so that the locking height becomes gradually smaller as it moves from the main guide 221 side to the auxiliary guide 222 side. That is, looking at the area where the step 710 of the male connector 700 is caught by the locking portion 210 as shown in FIG. 7, the locking height (h2) on the auxiliary guide 221 side is higher than the locking height (h1) on the main guide 221 side. ) can be seen to be smaller. Therefore, when inserting the male connector 700 into the insertion groove 110 to couple it or removing it to separate it, the maximum height at which the engaging portion 210 must be lifted upward may be as high as h1. Accordingly, the height at which the locking part 210 must be lifted can be reduced compared to when the diameter of the lower inner peripheral surface of the locking part 210 is formed to correspond to the outer diameter of the male connector 700.

In addition, the housing 100 has an expansion portion formed in such a way that the inner diameter gradually increases as it moves from the seating groove 130 toward the entrance in the opposite direction to which the male connector 700 is inserted, so that the male connector 700 is inserted into the insertion groove of the housing 100. It may be easy to insert into (110) and the seating groove (130). At this time, a support rib 180 corresponding to the inner diameter of the seating groove 130 may be formed to protrude inward in the radial direction on the lower side of the expanded portion of the housing 100. Therefore, even if the male connector 700 is slightly pushed out in the opposite direction to which it was inserted due to external force or internal pressure, the male connector 700 is prevented from sagging downward by the support rib 180, so the male connector 700 will not be easily separated. You can. That is, in a structure in which one first fixing part 200 holds and fixes the step 710 of the male connector 700 in the radial direction only on one side, the support rib 180 holds the first fixing part 200 in the radial direction. ) can play a role in supplementing the prevention of separation of the male connector (700) by supporting the other side.

In addition, the housing 100 may be formed in a form in which both side walls of the portion corresponding to the free end of the lever 230 are partially removed, making it easier to press the lever 230. Accordingly, the rigidity of the elastic member 400 can be increased to prevent the male connector 700 from easily falling out while inserted, and even if the rigidity of the elastic member is relatively large, the male connector can be separated more easily by pressing the lever. there is.

Additionally, a disc-shaped flange 170 may be formed in the housing 100, and the flange 170 may be formed in a position adjacent to the connection port 160 and corresponding to the lever 230. Therefore, when separating the male connector 700 by pulling it in the opposite direction to which it was inserted, the worker can easily pull the flange 170 with his hand and thus easily separate the male connector 700.

<Example 2>

Figures 8 and 9 are an assembled perspective view and an exploded perspective view showing the quick connector according to the second embodiment of the present invention, and a front cross-sectional view showing the quick connector in a state in which the male connector is inserted and coupled.

As shown, the quick connector according to the second embodiment of the present invention may be configured to further include a second fixing part 300 in the first embodiment described above.

The second fixing part 300 may extend from the communication hole 120 of the housing 100 toward the engaging part 210 of the first fixing part 200, and the second fixing part 300 is free. The stage may be placed on the upper side of the insertion guide 220. Therefore, when the locking portion 210 of the first fixing part 200 is inserted into the communication hole 120, the insertion guide 220 is caught in the second fixing part 300 and may not be easily separated in the upward direction.

Accordingly, when the male connector 700 is pushed out in the opposite direction to which it is inserted due to external force or internal pressure, the engaging portion 210 of the first fixing part 200 is deformed or rotated by the second fixing part 300. This prevents the male connector 700 from easily coming off. In addition, when separating the male connector 700 while the male connector 700 is inserted into the insertion groove 110 and caught on the locking portion 210, pressing the lever 230 downward causes the locking portion 210 to be disconnected. Push the second fixing part 300 upward so that the second fixing part 300 is deformed and the locking part 210 moves upward, and then pull the male connector 700 to easily connect the male connector 700. It can be separated.

The present invention is not limited to the above-described embodiments, and its scope of application is diverse, and anyone skilled in the art can understand it without departing from the gist of the invention as claimed in the claims. Of course, various modifications are possible.

100: Housing 110: Insertion groove
120: flue hole 130: anchor groove
140: coupling hole 150: fixing protrusion
160: connection port 170: flange
180: support rib 190: fixing hole
200: first fixing part 210: catching part
220: Insertion guide 221: Main guide
222: Auxiliary guide 230: Lever
240: Coupling portion 241: Locking protrusion
300: second fixing unit
400: Elastic member
500: O-ring
600: Spacer 610: Locking protrusion
700: Male connector 710: Stepped

Claims (17)

A housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; and
A locking portion is formed and an insertion guide protrudes from the locking portion toward the inlet side of the insertion groove. The locking portion is inserted into the communication hole so that the lower end of the locking portion is disposed at a position corresponding to the insertion groove, and is attached to the housing. Combined first fixing part; It is made including,
The first fixing part is rotatably coupled to the housing or formed to be elastically deformable,
The first fixing part is,
a lever extending from the top of the locking portion in the opposite direction in which the insertion guide protrudes, and
A quick connector further comprising a coupling portion connected to the housing on one side connected to the locking portion and the lever, and on the other side disposed to be spaced apart from the lever.
delete delete According to paragraph 1,
A pair of coupling holes are formed to be spaced apart from each other in the housing, and a pair of locking protrusions corresponding to the pair of coupling holes are formed on the coupling part of the first fixing part,
A quick connector, characterized in that the locking protrusion is inserted into the coupling hole and coupled.
According to paragraph 1,
A quick connector further comprising an elastic member interposed between the housing and the lever.
According to clause 5,
A quick connector, characterized in that a fixing protrusion is formed in the housing, and one end of the elastic member is inserted and coupled to the fixing protrusion.
According to clause 6,
The quick connector is characterized in that the height of the part corresponding to the free end of the lever is lower than the height of the remaining part of the fixing protrusion.
According to paragraph 1,
The insertion guide of the first fixing part is a quick connector including a main guide and a pair of auxiliary guides spaced apart from each other in the circumferential direction of the main guide.
According to clause 8,
The quick connector is characterized in that the locking portion of the first fixing part is formed so that the locking height becomes gradually smaller as it moves from the main guide side to the auxiliary guide side.
According to paragraph 1,
A quick connector in which a resting groove having a larger diameter than the insertion groove is formed on the inlet side of the insertion groove of the housing, and further includes an O-ring and a spacer inserted into the resting groove.
According to clause 10,
In the opposite direction in which the male connector is inserted, an expansion portion is formed with an inner diameter gradually increasing from the seating groove toward the entrance,
A quick connector, characterized in that a support rib corresponding to the inner diameter of the seating groove is formed to protrude radially inward on the lower side of the expansion portion.
According to clause 10,
A quick connector has a step protruding from the outer peripheral surface and further includes a male connector that is inserted into the insertion groove of the housing and engages with the locking portion of the first fixing part.
According to paragraph 1,
A quick connector extending from a communication hole of the housing toward the first fixing part, and further comprising a second fixing part whose free end is disposed on an upper side of the insertion guide.
According to paragraph 1,
The quick connector is characterized in that the housing is formed in a shape in which both side walls of the portion corresponding to the free end of the lever are partially deleted.
A housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; and
A locking portion is formed and an insertion guide protrudes from the locking portion toward the inlet side of the insertion groove. The locking portion is inserted into the communication hole so that the lower end of the locking portion is disposed at a position corresponding to the insertion groove, and is attached to the housing. Combined first fixing part; It is made including,
The insertion guide of the first fixing part is a quick connector including a main guide and a pair of auxiliary guides spaced apart from each other in the circumferential direction of the main guide.
A housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; and
A locking portion is formed and an insertion guide protrudes from the locking portion toward the inlet side of the insertion groove. The locking portion is inserted into the communication hole so that the lower end of the locking portion is disposed at a position corresponding to the insertion groove, and is attached to the housing. Combined first fixing part; It is made including,
A resting groove having a larger diameter than the insertion groove is formed on the entrance side of the insertion groove of the housing, and further includes an O-ring and a spacer inserted into the resting groove,
In the opposite direction in which the male connector is inserted, an expansion portion is formed with an inner diameter gradually increasing from the seating groove toward the entrance,
A quick connector, characterized in that a support rib corresponding to the inner diameter of the seating groove is formed to protrude radially inward on the lower side of the expansion portion.
A housing having an insertion groove formed on one side into which a male connector is inserted, communicating with the insertion groove, and having a communication hole formed in a direction crossing the insertion groove; and
A locking portion is formed and an insertion guide protrudes from the locking portion toward the inlet side of the insertion groove. The locking portion is inserted into the communication hole so that the lower end of the locking portion is disposed at a position corresponding to the insertion groove, and is attached to the housing. Combined first fixing part; It is made including,
A quick connector extending from a communication hole of the housing toward the first fixing part, and further comprising a second fixing part whose free end is disposed on an upper side of the insertion guide.

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