CN214743571U

CN214743571U - Three-way one-way valve for vacuum braking of automobile

Info

Publication number: CN214743571U
Application number: CN202120902200.1U
Authority: CN
Inventors: 夏雷鸣; 马宝玲; 王玮丰; 李立涛; 李雅茹
Original assignee: Hebei Chinaust Automotive Plastics Co Ltd
Current assignee: Hebei Chinaust Automotive Plastics Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-16
Anticipated expiration: 2031-04-28

Abstract

The utility model relates to a technical field of automobile parts, more specifically relates to a tee bend check valve for car vacuum braking. A three-way one-way valve for vacuum braking of an automobile comprises a middle shell, side shells and rubber diaphragms, wherein the side shells are arranged on two sides of the middle shell, the insides of the side shells are communicated with the insides of the middle shell, and the rubber diaphragms are respectively arranged at the connecting positions between the side shells and the middle shell. The utility model integrates two one-way valves (side shell) and a three-way structure (middle shell), thereby greatly reducing the complexity of the pipeline; the design of seal structure can guarantee the accurate location and the accurate action of diaphragm to guarantee sufficient airflow and sealed effect in the pipeline, effectively improve driver's the experience of driving.

Description

Three-way one-way valve for vacuum braking of automobile

Technical Field

The utility model relates to a technical field of automobile parts, more specifically relates to a tee bend check valve for car vacuum braking.

Background

The check valve applied to the vacuum brake system of the automobile at present is generally a straight-through check valve or a right-angle check valve. The vacuum booster has the effects that the gas in the vacuum booster can be ensured to flow into the engine through the one-way valve, so that the vacuum degree in the booster is improved, and meanwhile, when the engine stops working or the vacuum degree in the engine is smaller, the vacuum degree in the booster is maintained.

With the increasing importance of the country on environmental protection, the small-displacement automobile is popular with host factories and passengers. Because the discharge capacity is lower, some motorcycle types only rely on the engine to provide the vacuum source for vacuum booster with the auxiliary brake often seem the ability not enough, at this moment can be equipped with a vacuum pump again usually, and the brake pipe can be more complicated this moment, becomes three or more by a pipe, and the quantity of check valve also can rise simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least, provide a tee bend check valve for car vacuum braking, it can arrange in the braking system who needs two check valves, greatly reduced the quantity of part in the pipeline and the complexity of manufacturing.

The technical scheme of the utility model is that: a three-way one-way valve for vacuum braking of an automobile comprises a middle shell, side shells and rubber diaphragms, wherein the side shells are arranged on two sides of the middle shell, the insides of the side shells are communicated with the insides of the middle shell, and the rubber diaphragms are respectively arranged at the connecting positions between the side shells and the middle shell.

Furthermore, well casing include the air inlet neck, locate the well casing main part of air inlet neck one end, the air inlet neck in be equipped with the air vent, well casing main part length extending direction's both sides be equipped with the cavity respectively, cavity and air vent intercommunication.

Furthermore, the axis of the length extension direction of the air inlet neck is perpendicular to the axis of the length extension direction of the middle shell body.

Furthermore, the number of the chambers is two, the chambers are symmetrically arranged on two sides of the main body of the middle shell, and the middle shell is connected with the side shell through the chambers.

Furthermore, a supporting surface for supporting the rubber diaphragm is arranged in the cavity, and the supporting surface is connected with the inner wall of the cavity.

Further, the supporting surface upper surface be equipped with sealed arch, supporting surface air vent, location cylinder respectively from the extroversion inwards, sealed arch for annular structure and airtight with the laminating of rubber diaphragm, the supporting surface air vent for being 6 holes of circular array equipartition and with the air vent intercommunication, the location cylinder is located the supporting surface center, it can laminate with the rubber diaphragm hole.

Furthermore, the side shell comprises a side shell neck, side shell vent holes are formed in the side shell neck, the side shell neck is connected with an automobile pipeline, and the side shell vent holes are communicated with the two chambers of the middle shell.

Furthermore, a disc structure coaxial with the side shell is arranged at the root of the neck of the side shell, a stepped annular convex structure is arranged on the other side face of the disc structure, a chamber stepped structure is arranged in the chamber, and the chamber stepped structure is connected with the annular convex structure in a matched mode.

Furthermore, the inner side surface of the annular protrusion structure is provided with three uniformly distributed ribs which are connected with the annular protrusion structure and extend to the axis, and the center of each rib is provided with a positioning hole positioned with the positioning column.

Furthermore, the bottom of the middle shell is also provided with a cross rib.

Compared with the prior art, the beneficial effects are: the utility model integrates two one-way valves (side shell) and a three-way structure (middle shell), thereby greatly reducing the complexity of the pipeline; the design of seal structure can guarantee the accurate location and the accurate action of diaphragm to guarantee sufficient airflow and sealed effect in the pipeline, effectively improve driver's the experience of driving.

Drawings

Fig. 1 is an overall perspective view of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 2 is a schematic overall explosion diagram of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 3 is a schematic perspective view of the middle housing 10 of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 4 is a front view schematically illustrating the middle housing 10 of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 5 is a schematic sectional view of the middle case 10 of fig. 4 along the line B-B according to the present invention.

Fig. 6 is a schematic side view of the middle housing 10 of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 7 is a schematic perspective view of the left housing 20 of the three-way check valve for vacuum braking of an automobile according to the present invention.

Fig. 8 is a front view of the left housing 20 of the three-way check valve for vacuum braking of a vehicle according to the present invention.

Fig. 9 is a schematic sectional view taken along line a-a of fig. 8 according to the present invention.

Fig. 10 is a schematic view of the working principle of the three-way check valve for vacuum braking of an automobile according to the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

As shown in fig. 1 and 2, a three-way check valve for vacuum braking of an automobile according to the present invention is shown in a schematic perspective view and an explosion diagram.

In this embodiment, a tee bend check valve for car vacuum braking, whole tee bend check valve is T style of calligraphy structure, divides into 5 parts altogether: 1 middle case 10, two side cases 20 and two rubber diaphragms 30. The rubber diaphragm comprises a middle shell 10, two side shells 20 and two rubber diaphragms 30. Wherein, two side casings 20 are arranged at two side parts of the middle casing 10, and the insides of the two side casings 20 are communicated with the inside of the middle casing 10, and 1 circular rubber diaphragm 30 is respectively arranged between the two side casings 20 and the middle casing 10, that is, the two rubber diaphragms 30 are respectively arranged at the connecting positions between the two side casings 20 and the middle casing 10.

As shown in fig. 10, when the present invention is applied, the T-shaped middle end is connected to a vacuum booster, and the two side casings 20 at the left and right ends are respectively connected to a vacuum pump and an engine; under the normal working condition, the one-way valve at the engine side is conducted, the other side is closed, and the airflow flows to the engine from the booster; when the engine is in idling, the vacuum degree of the engine side is insufficient, the one-way valve of the vacuum pump side is opened at the moment, and the air flow flows to the vacuum pump from the booster. When the vehicle is powered off, the check valves on both sides of the two side cases 20 are closed to maintain the vacuum degree in the booster.

Optionally, two side casings 20 and well casing 10 link together through the plastic welding technique, the utility model discloses a tee bend check valve has integrated two check valves of side casing 20 and the tee bend structure of well casing 10, greatly reduced the complexity of pipeline.

The plastic welding technique may be friction welding, ultrasonic welding, thermoplastic welding, stick welding, etc. For example, the circular welding connection port can be connected by rotary type friction welding, and the plastic at the contact part is melted and softened by using friction heat generated by two parts under pressure in the friction process and is aligned and fixed until the plastic is firmly coagulated.

The design of seal structure can guarantee the accurate location and the accurate action of two rubber diaphragms 30 between two lateral shells 20 and well casing 10 to guarantee sufficient airflow and sealed effect in the pipeline, effectively improve driver's the experience of driving.

Fig. 3-6 respectively show the structural schematic diagrams of the middle shell 10 of the three-way check valve for vacuum braking of the automobile according to the present invention at different angles.

In one embodiment, the middle shell 10 includes an air inlet neck 12 and a middle shell body 18 disposed at one end of the air inlet neck 12, a vent hole 11 is disposed in the air inlet neck 12, two sides of the middle shell body 18 in the length extending direction are respectively provided with a chamber 17, and the chambers 17 are communicated with the vent hole 11. The air inlet neck 12 can be reliably connected with an automobile nylon pipeline or a rubber pipeline.

Specifically, the axis of the intake neck 12 in the longitudinal direction is perpendicular to the axis of the middle housing body 18 in the longitudinal direction. The air inlet neck 12 is reliably connected with an automobile nylon pipeline or a rubber pipeline. The intake neck 12 is connected with a chamber 17, the chamber 17 is divided into a left chamber and a right chamber, and is symmetrically arranged at two sides of a middle shell body 18, and the middle shell 10 is connected with a side shell 20 through the chamber 17. In this embodiment, the air inlet neck 12 and the middle housing main body 18 are perpendicular to each other, and the cross section of the middle housing 10 has an inverted T-shaped structure (as shown in fig. 5). As shown in fig. 2-6, a represents the longitudinal extension direction of the middle housing body 18, b represents the longitudinal extension direction of the intake neck 12, and a and b are perpendicular to each other. In addition, the vent hole 11 is connected with the left and right chambers 17 of the middle shell; the middle shell is divided into two chambers 17 at the left and the right, and is of a symmetrical structure.

In one embodiment, as shown in fig. 5, a supporting surface for supporting the rubber diaphragm 30 is provided in the chamber 17, and the supporting surface is connected to the inner wall of the chamber 17. Be equipped with the holding surface in the cavity 17, the holding surface links to each other with the cavity 17 inner wall, can support rubber diaphragm 30 for rubber diaphragm 30 can not drop.

Specifically, the upper surface of the supporting surface is provided with a sealing bulge 13, a supporting surface vent hole 14 and a positioning column 15 from outside to inside respectively. Specifically, the sealing bulge 13 is of a circular ring structure and is attached to the rubber membrane 30 in a sealed mode, the support surface vent holes 14 are 6 holes which are uniformly distributed in a circular array mode and are communicated with the vent holes 11, and the positioning column body 15 is located in the center of the support surface and can be attached to the inner hole of the rubber membrane 30. In this embodiment, the sealing protrusion 13 is a circular ring structure and is attached to the rubber diaphragm 30 to form a sealing effect. The support surface vent holes 14 are 6 holes uniformly distributed in a circular array and are connected with the vent holes 11 in the thin neck at the upper end of the middle shell. The positioning column 15 is located at the center of the supporting surface and can be attached to the inner hole of the rubber diaphragm 30, so that the diaphragm can be accurately positioned.

Preferably, as shown in fig. 6, the bottom of the middle shell 10 is further provided with a cross rib 16. Well casing downside is equipped with cross muscle column structure, and it can avoid the casing to produce too big deformation when moulding plastics, and this cross muscle 16 can be located and can be used to simultaneously the three-way valve its atress position on rigging equipment when assembling nylon tube prevents deformation.

Fig. 7-9 are schematic diagrams illustrating the side housing 20 of the three-way check valve for vacuum braking of a vehicle according to the present invention with different angles.

Since the left and right housings 20 have a symmetrical structure, the following description will be made by taking the left housing as an example, and the skilled person will naturally understand the complete structure of the left and right housings 20 without creative efforts based on the description.

In one embodiment, as shown in fig. 7-9, the left housing 20 includes a side housing neck 21, side housing vents 26 are provided in the side housing neck 21, the side housing neck 21 is connected to the vehicle plumbing, and the side housing vents 26 communicate with the two chambers 17 of the center housing 10. In this embodiment, the side casing 20 may cover the left and right chambers 17 of the middle casing 10.

Specifically, as shown in fig. 5, 7 and 9, a disc structure 22 coaxial with the side shell neck 21 is arranged at the root of the side shell neck 21, a stepped annular convex structure 23 is arranged on the other side surface of the disc structure 22, a chamber stepped structure 19 is arranged in the chamber 17, and the chamber stepped structure 19 is connected with the annular convex structure 23 in a matching manner.

In this implementation, through cavity stair structure 19 and annular protruding structure 23 assorted connection for side casing 20 can the zonulae occludens can not loosen with well casing 10, and the rethread plastic welding technique links together the back, and the structure of whole tee bend check valve is more reliable and more stable firmly.

In one embodiment, as shown in fig. 3-9, the inner surface of the annular protrusion 23 is provided with three uniformly distributed ribs 25 extending toward the axis, and the center of the rib 25 is provided with a positioning hole 24 for positioning with the positioning column 15. On the inner side surface of the annular projection 23, three ribs 25 are provided, which extend axially and are arranged in a uniform manner and limit the maximum deformation angle of the membrane. The positioning column 15 can be precisely positioned with the positioning hole 24.

As shown in fig. 1-9, the working principle of the present invention is that the hole in the rubber diaphragm 30 is disposed on the side housing positioning post 27, when the rubber diaphragm 30 is closed, one side surface can be attached to the supporting surface of the middle housing 10, and attached to the sealing protrusion 13 thereon to form a sealing effect; when the rubber diaphragm 30 is opened, it can be attached to the three radiating ribs 25 of the side casing 20, and the air flow passes through the gap between the rubber diaphragm 30 and the casing. The shell of the utility model is made of high-strength nylon plastic, and can meet the use temperature of-40 ℃ to 150 ℃.

The patent innovation points of the utility model include simultaneously not limited to the following contents:

(1) the utility model integrates a T-shaped structure with a left check valve, a right check valve and a three-way structure, and the two check valves are respectively arranged with two T-shaped structures, and the left side and the right side of the T-shaped structure are air outlet ends;

(2) the rubber diaphragm at the joint between the two side shells and the middle shell has unique positioning structure and positioning form;

(3) the utility model discloses the cross muscle type structure of well casing bottom when avoiding the casing to produce too big deformation when moulding plastics, can be used to the three-way valve its atress position on rigging equipment when assembling nylon tube.

Therefore, the utility model integrates two one-way valves (side shell) and a three-way structure (middle shell), thereby greatly reducing the complexity of the pipeline; the design of seal structure can guarantee the accurate location and the accurate action of diaphragm to guarantee sufficient airflow and sealed effect in the pipeline, effectively improve driver's the experience of driving.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The three-way one-way valve for vacuum braking of the automobile is characterized by comprising a middle shell (10), side shells (20) and rubber diaphragms (30), wherein the side shells (20) are arranged on two side parts of the middle shell (10), the interiors of the side shells (20) are communicated with the interior of the middle shell (10), and the rubber diaphragms (30) are respectively arranged at connecting positions between the side shells (20) and the middle shell (10).

2. The three-way check valve for vacuum brake of the automobile as claimed in claim 1, wherein: well casing (10) including air inlet neck (12), locate middle casing main part (18) of air inlet neck (12) one end, air inlet neck (12) in be equipped with air vent (11), the both sides of middle casing main part (18) length extending direction be equipped with cavity (17) respectively, cavity (17) and air vent (11) intercommunication.

3. The three-way check valve for vacuum brake of the automobile as claimed in claim 2, wherein: the axial line of the length extension direction of the air inlet neck (12) is vertical to the axial line of the length extension direction of the middle shell body (18).

4. The three-way check valve for vacuum brake of the automobile as claimed in claim 3, wherein: the number of the chambers (17) is two, the chambers are symmetrically arranged on two sides of the middle shell body (18), and the middle shell body (10) is connected with the side shell body (20) through the chambers (17).

5. The three-way check valve for vacuum brake of the automobile as claimed in claim 4, wherein: the rubber diaphragm support structure is characterized in that a supporting surface for supporting the rubber diaphragm (30) is arranged in the cavity (17), and the supporting surface is connected with the inner wall of the cavity (17).

6. The three-way check valve for vacuum brake of the automobile as claimed in claim 5, wherein: the supporting surface upper surface be equipped with sealed arch (13), supporting surface air vent (14), location cylinder (15) respectively from the extroversion inwards, sealed arch (13) be ring shape structure and with rubber diaphragm (30) laminating airtight, supporting surface air vent (14) for being 6 holes of circular array equipartition and with air vent (11) intercommunication, location cylinder (15) are located the supporting surface center, it can laminate with rubber diaphragm (30) hole.

7. The three-way check valve for vacuum brake of the automobile as claimed in claim 6, wherein: the side shell (20) comprises a side shell neck (21), side shell vent holes (26) are formed in the side shell neck (21), the side shell neck (21) is connected with an automobile pipeline, and the side shell vent holes (26) are communicated with the two chambers (17) of the middle shell (10).

8. The three-way check valve for vacuum brake of automobile according to claim 7, wherein: the root of the side shell neck (21) is provided with a disc structure (22) coaxial with the side shell neck, the other side surface of the disc structure (22) is provided with a stepped annular convex structure (23), a chamber stepped structure (19) is arranged in the chamber (17), and the chamber stepped structure (19) is connected with the annular convex structure (23) in a matching manner.

9. The three-way check valve for vacuum brake of automobile according to claim 8, wherein: the inner side surface of the annular protruding structure (23) is provided with three uniformly distributed ribs (25) which are connected with the annular protruding structure and extend to the axis, and the center of each rib (25) is provided with a positioning hole (24) which is positioned with the positioning column body (15).

10. The three-way check valve for vacuum brake of automobile according to any one of claims 1 to 9, wherein: the bottom of the middle shell (10) is also provided with a cross rib (16).