CN217056733U

CN217056733U - Quick connector for oil pipe

Info

Publication number: CN217056733U
Application number: CN202220537262.1U
Authority: CN
Inventors: 王光明; 贾小丽; 谢凤; 赵建洲; 杨文钊
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-26
Anticipated expiration: 2032-03-10

Abstract

The application discloses oil pipe quick connector includes: a fitting body including an inlet section and an outlet section, the interiors of the inlet and outlet sections communicating; the limiting sleeve is sleeved on the outer side of the inlet section, the outer side wall of the limiting sleeve is provided with an elastic locking block, the outer side wall of the inlet section is provided with an avoiding groove, so that the elastic locking block can face to the avoiding groove to shrink when the quick connector is installed on the oil sprayer, and the elastic locking block is restored to deform and matched with the clamping groove of the oil sprayer in a locking mode. The utility model provides an oil pipe quick connector only utilizes and to dodge the groove in the joint main part and the cooperation of the elastic locking piece on the sleeve thereby can realize installing quick connector to the sprayer in realizing that quick connector is spacing, relates to spare part figure few, assembly and processing are simple, and can improve quick connector's installation effectiveness.

Description

Quick connector for oil pipe

Technical Field

The application relates to the technical field of oil pipe joints, in particular to an oil pipe quick-plugging joint.

Background

Traditional oil pipe connects is equipped with on the joint main part and presses structure and slider structure, when connecting the installation, need press and press the structure and make the slider promote the relevant limit structure realization locking of the relevant limit structure who just can with the sprayer after the limit structure jack-up on the sleeve to it is spacing to realize connecting. The spare part quantity that above-mentioned scheme relates is many, causes processing complicacy, and connects spacing complex operation's problem.

SUMMERY OF THE UTILITY MODEL

The application provides an oil pipe quick connector to at least, solve present quick connector spare part quantity many, the assembly is complicated, perhaps the last draw-in groove of sub-spare part is many, spacing many, processing is complicated, connects spacing complex operation's problem.

The technical scheme adopted by the application is as follows:

an oil pipe quick connector comprising: a fitting body comprising an inlet section and an outlet section, the interiors of the inlet and outlet sections communicating; the limiting sleeve is sleeved on the outer side of the inlet section, the outer side wall of the limiting sleeve is provided with an elastic locking block, the outer side wall of the inlet section is provided with an avoiding groove, so that the elastic locking block can face to the avoiding groove to shrink when the quick connector is installed on the oil sprayer, and the elastic locking block is restored to deform and matched with the clamping groove of the oil sprayer in a locking mode.

The oil pipe quick connector further has the following additional technical characteristics:

one of the joint main body and the limiting sleeve is provided with a clamping portion, the other of the joint main body and the limiting sleeve is provided with a matching portion matched with the clamping portion, and the clamping portion is matched with the matching portion in a locking mode under the condition that the elastic locking block is matched with the clamping groove of the oil sprayer in a locking mode.

The lower end of the inlet section extends out of the limiting sleeve, and an elastic sealing element in sealing fit with the fuel injector is arranged.

The lower extreme of entry section is equipped with the annular groove, elastic sealing member inlays to be located the annular groove.

The limiting sleeve comprises an upper sleeve and a lower sleeve which are connected and communicated, the lower sleeve is sleeved on the outer side of the inlet section, the joint main body is provided with a mounting seat, and the upper sleeve is sleeved on the outer side of the mounting seat and can be matched with the mounting seat in a buckling mode.

The quick connector comprises an upper sleeve, a lower sleeve, a mounting seat, a quick connector, a lower sleeve, a mounting seat, a mounting groove, a quick connector and a quick connector, wherein a transition step is arranged between the upper sleeve and the lower sleeve, the mounting seat is provided with a bulge extending towards the lower sleeve, the quick connector is provided with the mounting groove, the lower sleeve and the inlet section stretch into the mounting groove when the quick connector is mounted on the oil injector, the outer surface of the transition step is matched with a notch of the mounting groove in a stopping way, and the inner surface of the transition step is matched with the bulge in the stopping way.

The inlet section and the outlet section are arranged in an L-shape.

The mounting seat protrudes out of the inlet section along the axial direction of the inlet section, and the top of the mounting seat is provided with a pressing part.

The upper sleeve, the lower sleeve and the elastic locking block are of an integrated elastic structure; the hardness of the joint main body is greater than that of the limiting sleeve.

The outlet section is provided with a conical guide surface with the outer diameter gradually reduced along the outlet direction; the outlet section is provided with at least one annular inverted tooth arranged along the axial direction of the outlet section so as to increase the clamping force of the outlet section and an external pipeline.

Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:

1. the utility model provides an oil pipe quick connector only utilizes and to dodge groove and the cooperation of the elastic locking piece on the sleeve in the joint main part and thereby can realize installing quick connector to the sprayer in realizing that quick connector is spacing, relates to spare part figure few, assembly and processing are simple, and can improve quick connector's installation effectiveness. Specifically, utilize in the characteristic that the elastic locking piece can be out of shape conveniently gets into the installation pipeline of sprayer, resume deformation through the elastic locking piece afterwards and the draw-in groove locking of sprayer can realize the installation of quick connector.

2. As a preferred embodiment of the present application, one of the joint main body and the limiting sleeve is provided with a clamping portion, the other of the joint main body and the limiting sleeve is provided with a matching portion adapted to the clamping portion, and the clamping portion is in locking matching with the matching portion when the elastic locking block is in locking matching with the clamping groove of the fuel injector; therefore, the limiting sleeve is locked with the oil sprayer and the joint main body at the same time, installation firmness of the joint main body and the oil sprayer is guaranteed, and the joint main body can be prevented from loosening to influence oil flow.

3. As a preferred embodiment of the present application, the lower end of the inlet section extends out of the limiting sleeve, and is provided with an elastic sealing element in sealing fit with the fuel injector; the sealing performance of the installation of the quick connector is ensured by arranging the sealing piece.

Preferably, the lower end of the inlet section is provided with an annular groove, and the elastic sealing element is embedded in the annular groove; the fixing of the sealing element can be enhanced by using the annular groove, and the sealing element can be prevented from falling off and losing to influence the sealing between the joint and the fuel injector.

4. As a preferred embodiment of the present application, the limiting sleeve includes an upper sleeve and a lower sleeve which are connected and communicated, the lower sleeve is sleeved outside the inlet section, the joint main body is provided with an installation seat, and the upper sleeve is sleeved outside the installation seat and can be in snap fit with the installation seat; therefore, different areas of the limiting sleeve can be used for limiting the oil sprayer and the joint main body respectively, so that the limiting is realized more accurately, and the fixing effect between the joint main body and the oil sprayer is improved.

As a next preferred embodiment of the present embodiment, a transition step is disposed between the upper sleeve and the lower sleeve, the mounting seat is provided with a protrusion extending toward the lower sleeve, the fuel injector is provided with a mounting groove, the lower sleeve and the inlet section extend into the mounting groove when the quick connector is mounted to the fuel injector, an outer surface of the transition step is in stop fit with a notch of the mounting groove, and an inner surface of the transition step is in stop fit with the protrusion; the multiple stops through the transition steps define where the quick connector is inserted into the fuel injector and provide an indication to the operator that it is in place.

As a next preferred embodiment of the present embodiment, the inlet section and the outlet section are arranged in an L shape, and the extending direction of the outlet section can be optimized by using the configuration, so that the extension direction is adapted to the arrangement of the external pipeline, and the space occupation along the axial direction of the inlet section can be reduced, thereby rationalizing the space distribution.

Furthermore, the mounting seat protrudes out of the inlet section along the axial direction of the inlet section, and the top of the mounting seat is provided with a pressing part; from this, entry section and export section are L shape configuration, provide abundant space for arranging the mount pad, and this mount pad can be higher than and connect the main part to thereby can prevent that the outside from assaulting the influence to the joint main part and playing the guard action, and set up in the position of the operator operation of being convenient for and press the splenium then to improve operator's convenience of use and experience.

As a next preferred embodiment of the present embodiment, the upper sleeve, the lower sleeve and the elastic locking piece are an integrated elastic structure; therefore, when the quick connector is installed on the oil sprayer and the connector needs to be disassembled, the sleeve can be directly and outwards propped open, and then the connector main body can be taken down.

The hardness of the joint main body is greater than that of the limiting sleeve, so that the mechanical strength of the joint main body can be ensured, and an operator can directly apply pressure to the joint main body during installation.

5. As a preferable embodiment of the present application, the outlet section is provided with a tapered guide surface having an outer diameter gradually decreasing along the outlet direction, so as to ensure the smoothness of the connection between the external connection pipeline and the outlet section.

The export section is equipped with at least one annular pawl of arranging along its axial to increase export section and external pipeline's power of cramping, directly be connected with external pipeline through this annular pawl from this, can omit to set up the clamp and just can satisfy the requirement that product high temperature high pressure gas tightness, burst pressure and joint pull out the power of taking off, help reducing material and manufacturing cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a quick connector for an oil pipe according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a joint body of the quick-connect coupling of FIG. 1;

FIG. 3 is a schematic view of a stop sleeve of the quick connector of FIG. 1;

FIG. 4 is a schematic view of the quick connector of the fuel line of FIG. 1 after installation with a fuel injector.

Reference numerals are as follows:

10-a joint main body, 11-an inlet section, 12-an outlet section, 13-an avoidance groove, 110-an annular groove, 14-a mounting seat, 141-a limiting boss, 142-a protrusion, 143-a pressing part, 121-a conical guide surface and 122-an annular inverted tooth; 20-a limiting sleeve, 21-an elastic locking block, 22-an upper sleeve, 23-a lower sleeve, 221-a rib and 24-a transition step; 30-an elastomeric seal; 100-quick connector and 200-oil sprayer.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 4, the oil pipe quick connector 100 of the present application includes: a connector body 10, said connector body 10 comprising an inlet section 11 and an outlet section 12, the interiors of said inlet section 11 and said outlet section 12 communicating; limiting sleeve 20, the cover is located the outside of entrance section 11, limiting sleeve 20's lateral wall is equipped with elastic locking piece 21, entrance section 11's lateral wall is equipped with and dodges groove 13, with when quick connector 100 is installed to sprayer 200 elastic locking piece 21 can face dodge the shrink of groove 13, and be in elastic locking piece 21 resumes under the deformation elastic locking piece 21 with the draw-in groove locking cooperation of sprayer 200.

As shown in fig. 4, the quick connector 100 of the present application can achieve oil return of the fuel injector when being mounted to the fuel injector 200. Oil can enter from the inlet section 11 and flow out from the outlet section 12, and the outlet section 12 can be connected with other required pipelines. Based on the actual distribution of the oil circulation, the configuration of the joint main body 10 can be flexibly set, for example, the joint main body 10 is in a three-way configuration or a two-way configuration.

When the quick connector is directly mounted on the fuel injector, the problem that the connector is loosened and the fuel injector is not sealed tightly easily occurs in the using process. In order to solve the above problem, the present application may use the limiting sleeve 20 as an intermediate connecting member and a limiting member, that is, the limiting sleeve 20 is fixed to the joint main body 10 on one hand and to the fuel injector on the other hand, so as to fix the quick connector 100 and the fuel injector 200. Furthermore, the connector has a simplified structure, the design and processing difficulty and cost are reduced, and the installation of the connector can be simplified. Specifically, when the quick connector 100 is mounted on the fuel injector 200, the inlet section 11 and the limiting sleeve 20 outside the inlet section can enter the mounting pipeline of the fuel injector 200 together by pressing the connector main body 10, and the elastic locking block 21 can deform, so that the smoothness of entering the mounting pipeline is ensured, and when the elastic locking block 21 is squeezed, the elastic locking block can approach the avoidance groove 13; when the joint body 10 is pressed further, the limiting sleeve 20 may move upward relative to the joint body 10, so that the elastic locking piece 21 can move toward the clamping groove of the fuel injector 200 and finally lock with the clamping groove, and at this time, the elastic locking piece 21 recovers deformation and can be locked with the clamping groove in a matching manner.

Wherein, the shape and the size of the elastic locking block 21 are matched with the shape and the size of the avoiding groove 13.

As a preferred embodiment of the present application, one of the joint main body 10 and the limiting sleeve 20 is provided with a clamping portion, the other one of the joint main body and the limiting sleeve is provided with a matching portion adapted to the clamping portion, and the clamping portion is in locking matching with the matching portion when the elastic locking block 21 is in locking matching with the clamping groove of the fuel injector.

Preferably, the structure and the matching form of the clamping part and the matching part are not limited to the following way:

(1) one of the clamping portion and the matching portion is a protrusion structure, the other of the clamping portion and the matching portion is a slot, and the clamping portion is inserted into or clamped with the matching portion.

(2) The clamping portion and the matching portion are both of protruding structures, and the clamping portion is matched with the matching portion in a buckling mode or a stopping mode.

(3) The clamping portion and the matching portion are hook-shaped structures and are hooked with each other.

(4) One of the clamping part and the matching part is a hook-shaped structure, the other one of the clamping part and the matching part is a hook groove or a hook sleeve structure, and the clamping part and the matching part are hooked with each other.

In a preferred embodiment of the present application, the lower end of the inlet section 11 extends beyond the stop sleeve 20 and is provided with a resilient sealing element 30 in sealing engagement with the fuel injector.

Preferably, as shown in fig. 2, the lower end of the inlet section 11 is provided with an annular groove 110, and the elastic sealing member 30 is embedded in the annular groove 110. The elastic seal 30 is, for example, an O-ring seal. Therefore, the quick connector can ensure the sealing performance while meeting the requirement of quick insertion installation.

In other embodiments, seals may also be provided in the associated structure of the fuel injector. Or the inlet section and the fuel injector are both provided with sealing elements to enhance the sealing effect.

As a preferred embodiment of the present application, as shown in fig. 3, the limiting sleeve 20 includes an upper sleeve 22 and a lower sleeve 23 connected and penetrating through each other, the lower sleeve 23 is sleeved outside the inlet section 11, the joint main body 10 is provided with a mounting seat 14, and the upper sleeve 22 is sleeved outside the mounting seat 14 and can be in snap fit with the mounting seat 14.

Specifically, the lower sleeve 23 is, for example, cylindrical. And when the fitting body 10 has, for example, the configuration shown in fig. 2, the upper sleeve 22 may be designed in a semi-surrounding configuration as shown in fig. 3, for example, the upper sleeve 22 includes two oppositely disposed sidewalls to avoid interference with the outlet section 12.

Further, one of the mounting seat 14 and the upper sleeve 22 is provided with a clamping portion, and the other is provided with a matching portion adapted to the clamping portion, so as to perform locking mounting. The form of the clamping portion and the matching portion can refer to the above mentioned manner, and the application does not limit this. For example, the inner sidewall of the upper sleeve 22 is provided with a rib 221, and the mounting seat 14 is provided with a limit projection 141, the rib 221 is located on the upper side of the limit projection 141 and achieves the fixed limit of the limit sleeve 20 and the joint body 10 when stopping and cooperating with the limit projection 141. The number of the ribs 221 and the limit bosses 141 can be set according to actual requirements.

Further, as shown in fig. 3 and 4, a transition step 24 is disposed between the upper sleeve 22 and the lower sleeve 23, the mounting seat 14 is provided with a protrusion 142 extending toward the lower sleeve, the fuel injector is provided with a mounting groove, when the quick connector is mounted on the fuel injector, the lower sleeve 23 and the inlet section 11 extend into the mounting groove, an outer surface of the transition step 24 is in stop fit with a notch of the mounting groove, and an inner surface of the transition step 24 is in stop fit with the protrusion 142.

As shown in fig. 4, when the joint main body 10 is pressed to the bottom, the protrusion 142 and the mounting groove notch of the fuel injector clamp the transition step 24 so as to ensure the installation firmness of the limiting sleeve 20, and the limiting sleeve 20 limits the joint main body 10, so that the installation firmness of the joint main body 10 and the fuel injector is ensured.

As a preferred embodiment of the present application, the inlet section 11 and the outlet section 12 are arranged in an L-shape. For example, the inlet section 11 may extend vertically and the outlet section 12 may extend horizontally. The L-shaped configuration can reduce the space occupation of the joint in the vertical direction and optimize the space utilization. Wherein one or two outlet sections 12 can be provided.

In the solution with the mounting seat 14, the mounting seat 14 protrudes from the inlet section 11 along the axial direction of the inlet section 11, and the top of the mounting seat 14 is provided with a pressing portion 143. As shown in fig. 2, the mounting seat 14 is provided above the inlet section 11 and is higher than the joint main body 10, so that the mounting seat 14 can withstand an impact from the outside, thereby protecting the joint main body 10. The pressing portion 143 is, for example, a flat plate structure, and has a large coverage area, so as to facilitate the contact operation of an operator and protect the structure below.

As a preferred embodiment of the present application, the upper sleeve 22, the lower sleeve 23 and the elastic locking piece 21 are an integral elastic structure; the hardness of the joint body 10 is greater than that of the spacing sleeve 20.

The quick connector 100 of the present application is not only easily mountable to the fuel injector 200, but is also easily removable. For example, when the quick connector 100 is mounted on the fuel injector 200 and the connector body 10 needs to be disassembled for inspection or replacement, the stopper of the stopper sleeve 20 can be directly spread open to remove the connector body 10. On the other hand, since the joint body 10 is to be handled and a certain strength is to be secured, the joint body 10 can be processed using, for example, a metal material.

In a preferred embodiment of the present application, the outlet section 12 is provided with a tapered guide surface 121 with a gradually decreasing outer diameter in the outlet direction; the outlet section 12 is provided with at least one annular inverted tooth 122 arranged axially along the outlet section to increase the gripping force of the outlet section with the external pipeline. As shown in fig. 2, the tapered guide surface 121 facilitates the sleeving of the external pipeline, and when the external pipeline passes through the annular inverted tooth 122 along the tapered guide surface 121, the external pipeline can be connected. The annular inverted tooth 122 may be a terminal structure of the conical guiding surface 121, or may be an additional structure.

Where not mentioned in this application, this may be achieved using or taking advantage of existing technology.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An oil pipe quick connector is characterized by comprising:

a fitting body comprising an inlet section and an outlet section, the interiors of the inlet and outlet sections communicating;

the limiting sleeve is sleeved on the outer side of the inlet section, the outer side wall of the limiting sleeve is provided with an elastic locking block, the outer side wall of the inlet section is provided with an avoiding groove, so that the elastic locking block can face to the avoiding groove to contract when the quick connector is installed on the oil sprayer, and the elastic locking block recovers to deform and is matched with the clamping groove of the oil sprayer in a locking mode.

2. The oil pipe quick-connect coupling of claim 1,

3. The quick-connect coupling for oil pipe of claim 1,

the lower end of the inlet section extends out of the limiting sleeve, and an elastic sealing element in sealing fit with the oil sprayer is arranged.

4. The quick-connect coupling for oil pipe of claim 3,

5. The quick-connect coupling for oil pipe of claim 1,

6. The oil pipe quick-connect coupling of claim 5,

7. The oil pipe quick-connect coupling of claim 5,

the inlet section and the outlet section are arranged in an L-shape.

8. The oil pipe quick-connect coupling of claim 7,

the mounting seat along the axial protrusion in entry section, just the top of mounting seat is equipped with presses the splenium.

9. The quick-connect coupling for oil pipe of claim 5,

the upper sleeve, the lower sleeve and the elastic locking block are of an integrated elastic structure;

the hardness of the joint main body is greater than that of the limiting sleeve.

10. The quick-connect coupling for oil pipes of any one of claims 1 to 9,

the outlet section is provided with a conical guide surface of which the outer diameter gradually reduces along the outlet direction;

the outlet section is provided with at least one annular inverted tooth arranged along the axial direction of the outlet section so as to increase the clamping force of the outlet section and an external pipeline.