阅读说明：本技术 一种低压真空管 (Low-pressure vacuum tube ) 是由 董敏 白永洁 陈敏 李昌川 于 2020-06-22 设计创作，主要内容包括：本发明公开了一种低压真空管,涉及真空管技术领域,其技术方案要点包括真空管体,所述真空管体的两端分别转动连接有端部连接接头和端部泄压接头；所述真空管体的两端均设置有套管端,所述套管端设置有内凹环；所述端部连接接头的一端插接在所述套管端内,并设置有与相应的所述内凹环匹配的连接固定环槽；所述端部泄压接头的一端插接在所述套管端内,并设置有与相应的所述内凹环匹配的泄压固定环槽。本发明通过采用真空管体作为管路,在真空管体的两端分别转动连接端部连接接头和端部泄压接头,且分别采用内凹环与连接固定环槽连接匹配和内凹环与泄压固定环槽连接匹配,进而达到减轻该低压真空管管体重量以及成本的目的。(The invention discloses a low-pressure vacuum tube, which relates to the technical field of vacuum tubes and adopts the technical scheme that the low-pressure vacuum tube comprises a vacuum tube body, wherein two ends of the vacuum tube body are respectively and rotatably connected with an end part connecting joint and an end part pressure relief joint; the two ends of the vacuum tube body are provided with sleeve ends, and the sleeve ends are provided with concave rings; one end of the end part connecting joint is inserted into the sleeve end and is provided with a connecting and fixing ring groove matched with the corresponding concave ring; one end of the end part pressure relief joint is inserted into the sleeve end and is provided with a pressure relief fixing ring groove matched with the corresponding concave ring. According to the invention, the vacuum tube body is used as a pipeline, the end part connecting joint and the end part pressure relief joint are respectively rotatably connected at two ends of the vacuum tube body, and the inner concave ring is respectively connected and matched with the connecting and fixing ring groove and the inner concave ring is connected and matched with the pressure relief fixing ring groove, so that the aims of reducing the weight and the cost of the low-pressure vacuum tube body are achieved.)

1. A low-pressure vacuum tube comprises a vacuum tube body (1), and is characterized in that: two ends of the vacuum tube body (1) are respectively and rotatably connected with an end part connecting joint (3) and an end part pressure relief joint (4);

sleeve ends (11) are arranged at two ends of the vacuum pipe body (1), and the sleeve ends (11) are provided with concave rings (111);

one end of the end part connecting joint (3) is inserted into the corresponding sleeve end (11) and is provided with a connecting and fixing ring groove (32) matched with the corresponding concave ring (111);

one end of the end part pressure relief joint (4) is inserted into the corresponding sleeve end (11) and is provided with a pressure relief fixing ring groove (42) matched with the corresponding concave ring (111).

2. A low-pressure vacuum tube as claimed in claim 1, characterized in that: one end of the end part connecting joint (3) inserted in the sleeve end (11) is provided with a connecting sealing ring groove (33); one end of the end part pressure relief joint (4) inserted in the sleeve end (11) is provided with a pressure relief sealing ring groove (43); connect sealed annular groove (33) with all be provided with sealing washer (5) in pressure release sealed annular groove (43), sealing washer (5) and corresponding the inside wall butt of cover pipe end (11) is in with respectively end connection connects (3) with between cover pipe end (11) and end pressure release connects (4) with form sealedly between cover pipe end (11).

3. A low-pressure vacuum tube as claimed in claim 1, characterized in that: a fixed lantern ring (2) which is detachably connected is arranged on the vacuum pipe body (1), and the fixed lantern ring (2) is connected with a fixed support (21) which is used for installing and fixing the vacuum pipe body (1); the end connecting joint (3) is provided with a connecting bracket (31) for installing and fixing the end connecting joint (3); the end part pressure relief joint (4) is provided with a pressure relief bracket (41) for installing and fixing the end part pressure relief joint (4).

4. A low-pressure vacuum tube as claimed in claim 1, characterized in that: the end connecting joint (3) is L-shaped.

5. A low-pressure vacuum tube as claimed in claim 1, characterized in that: and a pressure relief valve body (44) is arranged on the inner side of one end, far away from the vacuum tube, of the end pressure relief joint (4).

6. A low-pressure vacuum tube as claimed in claim 5, characterized in that: the pressure relief valve body (44) comprises a valve body with one end inserted in the end pressure relief joint (4), a valve body pressure relief plate is arranged on the inner side wall of the valve body, a pressure relief column is inserted in the valve body pressure relief plate, a pressure relief spring plate is arranged at one end, facing the end pressure relief joint (4), of the pressure relief column, the pressure relief column is sleeved with a spring positioned between the pressure relief spring plate and the valve body pressure relief plate, the end of the end pressure relief joint (4) is provided with the joint pressure relief plate, and the pressure relief column is provided with an insertion column head inserted in the joint pressure relief plate; and the valve body pressure relief plate and the joint pressure relief plate are both provided with a plurality of through holes.

7. A low-pressure vacuum tube as claimed in claim 6, characterized in that: the plug post is sleeved with a pressure relief diaphragm which is abutted to the pressure relief spring plate.

8. A low-pressure vacuum tube as claimed in claim 6, characterized in that: an outlet inner cavity and an inlet inner cavity are formed in the valve body inner body, the inner diameter of the inlet inner cavity is larger than that of the outlet inner cavity, and a plurality of limiting blocks which are distributed in an equal radian mode and abut against the inner diameter of the inlet inner cavity are arranged on the peripheral side wall of the pressure relief spring plate; the diameter of the spring is matched with the inner diameter of the outlet inner cavity, and the valve body pressure relief plate is fixed on the inner side wall of the outlet inner cavity.

Technical Field

The invention relates to the technical field of vacuum tubes, in particular to a low-pressure vacuum tube.

Background

The general vehicle has two kinds of vacuum tubes, one is the vacuum tube for brake booster pump, the other is the vacuum tube for distributor ignition advance device. The vacuum tubes are used for providing vacuum degree for one side of the working pump membrane and are communicated with the atmosphere on the other side, so that the pump membrane drives the push rod to move forwards under the pressure of the atmosphere, and the function of assisting power is achieved.

At present, most of vacuum tubes are made of a material from a pipe fitting to a quick insertion end in application, so that the difficulty of the limitation of a pipeline is high in the design, the bending degree of a tube end is too complex, the risk coefficient of breakage caused by aggravation of stress concentration of the tube body in automobile vibration is influenced, and the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a low-pressure vacuum tube which has the effects of small pipeline limitation and remarkably reducing the use risk coefficient.

In order to achieve the purpose, the invention provides the following technical scheme:

a low-pressure vacuum tube comprises a vacuum tube body, wherein two ends of the vacuum tube body are respectively and rotatably connected with an end part connecting joint and an end part pressure relief joint;

the two ends of the vacuum tube body are provided with sleeve ends, and the sleeve ends are provided with concave rings;

one end of the end part connecting joint is inserted into the sleeve end and is provided with a connecting and fixing ring groove matched with the corresponding concave ring;

one end of the end part pressure relief joint is inserted into the sleeve end and is provided with a pressure relief fixing ring groove matched with the corresponding concave ring.

By adopting the technical scheme, the vacuum tube body is used as a pipeline, the connecting end part connecting joint and the end part pressure relief joint are respectively rotated at the two ends of the vacuum tube body, the inner concave ring and the connecting fixed ring groove are respectively adopted for connection and matching, and the inner concave ring and the pressure relief fixed ring groove are respectively adopted for connection and matching, so that the purposes of reducing the weight and the cost of the low-pressure vacuum tube body are achieved, and the vacuum tube has the effects of simple structure, convenience in steering and capability of solving the problem of complex end part structure.

The invention is further configured to: one end of the end part connecting joint inserted in the sleeve end is provided with a connecting sealing ring groove; one end of the end part pressure relief joint inserted in the sleeve end is provided with a pressure relief sealing ring groove; connect the seal ring groove with all be provided with the sealing washer in the pressure release seal ring groove, the sealing washer with corresponding the inside wall butt of cover pipe end is in with respectively the end connection connects with between the cover pipe end and the tip pressure release connect with form sealedly between the cover pipe end.

By adopting the technical scheme, the sealing ring positioned in the connecting sealing ring groove plays a role in obviously improving the connecting sealing performance between the end part connecting joint and the corresponding end of the vacuum pipe body; the sealing ring positioned in the pressure relief sealing ring groove plays a role in obviously improving the connection sealing performance between the end pressure relief joint and the corresponding end of the vacuum pipe body.

The invention is further configured to: the vacuum tube body is provided with a detachably connected fixed lantern ring, and the fixed lantern ring is connected with a fixed support for installing and fixing the vacuum tube; the end part connecting joint is provided with a connecting bracket for installing and fixing the end part connecting joint; the end part pressure relief joint is provided with a pressure relief bracket for installing and fixing the end part pressure relief joint.

By adopting the technical scheme, the fixing ring sleeve is fixedly connected with the vacuum tube body, and the vacuum tube body can be conveniently installed by fixing through the fixing bracket; the connecting support and the pressure relief support are respectively used for convenient installation of the end connecting joint and the end pressure relief joint, and the installation fixing stability of the low-pressure vacuum tube is remarkably improved while the installation fixing difficulty of the low-pressure vacuum tube is remarkably reduced.

The invention is further configured to: the end connecting joint is L-shaped.

Through adopting above-mentioned technical scheme, the end connection who is the L form connects the effect that realizes convenient the turning to at the rotation in-process, solves the problem of end connection structure difficulty.

The invention is further configured to: the end part pressure relief joint is far away from the inner side of one end of the vacuum tube body and is provided with a pressure relief valve body.

Through adopting above-mentioned technical scheme, the pressure release valve body plays the effect of stabilizing the pressure release, promotes the practicality and the effective increase of service life of this low pressure vacuum tube.

The invention is further configured to: the pressure relief valve body comprises a valve body, one end of the valve body is inserted into the end pressure relief joint, a valve body pressure relief plate is arranged on the inner side wall of the valve body, a pressure relief column is inserted into the valve body pressure relief plate, one end, facing the end pressure relief joint, of the pressure relief column is provided with a pressure relief spring plate, the pressure relief column is sleeved with a spring located between the pressure relief spring plate and the valve body pressure relief plate, the end of the end pressure relief joint is provided with a joint pressure relief plate, and the pressure relief column is provided with an insertion column head inserted into the joint pressure relief plate; and the valve body pressure relief plate and the joint pressure relief plate are both provided with a plurality of through holes.

Through adopting above-mentioned technical scheme, atmospheric pressure exerts pressure to the pressure release spring board, and then makes the pressure release spring board remove after making the spring atress compression, and then realizes gaseous mobile effect after pressure release spring board and joint pressure release board separation, simple structure and reach the purpose of effective control cost.

The invention is further configured to: the plug post is sleeved with a pressure relief diaphragm which is abutted to the pressure relief spring plate.

Through adopting above-mentioned technical scheme, atmospheric pressure exerts pressure to the pressure release diaphragm, and then makes the pressure release diaphragm remove after making the spring atress compression, and then realizes gaseous mobile effect after pressure release diaphragm and joint pressure relief board separation, simple structure and reach the purpose of effective control cost.

The invention is further configured to: an outlet inner cavity and an inlet inner cavity are formed in the valve body inner body, the inner diameter of the inlet inner cavity is larger than that of the outlet inner cavity, and a plurality of limiting blocks which are distributed in an equal radian mode and abut against the inner diameter of the inlet inner cavity are arranged on the peripheral side wall of the pressure relief spring plate; the diameter of the spring is matched with the inner diameter of the outlet inner cavity, and the valve body pressure relief plate is fixed on the inner side wall of the outlet inner cavity.

Through adopting above-mentioned technical scheme, showing the pressure release stability that promotes this pressure release valve body.

In conclusion, the invention has the following beneficial effects: by adopting the vacuum tube body as a pipeline, the connecting end part connecting joint and the end part pressure relief joint are respectively rotated at two ends of the vacuum tube body, and the inner concave ring and the connecting fixed ring groove are respectively adopted for connection and matching, and the inner concave ring and the pressure relief fixed ring groove are respectively adopted for connection and matching, so that the purposes of reducing the weight and the cost of the low-pressure vacuum tube body are achieved, and the low-pressure vacuum tube has the effects of simple structure, convenience in steering and capability of solving the problem of complex end part structure.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a partial sectional view schematically showing the structure of the present embodiment;

fig. 3 is a schematic sectional structure view of another part of the present embodiment.

Description of reference numerals: 1. a vacuum tube body; 11. sleeving the pipe end; 111. an inner concave ring; 2. a fixed collar; 21. fixing a bracket; 3. the end part is connected with a joint; 31. connecting a bracket; 32. connecting the fixed ring groove; 33. connecting the sealing ring grooves; 4. an end relief fitting; 41. a pressure relief bracket; 42. a pressure relief fixing ring groove; 43. a pressure relief seal ring groove; 44. a pressure relief valve body; 5. and (5) sealing rings.

Detailed Description

In order to make the technical solution and advantages of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a low-pressure vacuum tube comprises a vacuum tube body 1. The two ends of the vacuum tube body 1 are respectively and rotatably connected with an end part connecting joint 3 and an end part pressure relief joint 4. It should be mentioned that a detachably connected fixing collar 2 is provided on the vacuum tube body 1. The fixed lantern ring 2 is connected with a fixed bracket 21 for installing and fixing a vacuum tube; the end connection fitting 3 is provided with a connection bracket 31 for mounting and fixing the end connection fitting 3; and a pressure relief bracket 41 for attaching and fixing the end pressure relief joint 4 is provided on the end pressure relief joint 4. Therefore, the vacuum tube body 1 is fixedly connected with the vacuum tube body 1 through the fixing ring sleeve and is fixed through the fixing bracket 21, and the vacuum tube body 1 can be conveniently installed; correspondingly, connecting support 31 and pressure release support 41 are used for the convenient installation of tip attach fitting 3 and tip pressure release fitting 4 respectively, are showing the installation fixed stability that promotes this low-pressure vacuum tube when showing the installation fixed degree of difficulty that reduces this low-pressure vacuum tube.

As shown in fig. 2 and 3, sleeve ends 11 are provided at both ends of the vacuum tube 1. The sleeve end 11 is provided with an inwardly concave ring 111. One end of the end connecting joint 3 is inserted into the corresponding sleeve end 11 and is provided with a connecting and fixing ring groove 32 matched with the corresponding concave ring 111; one end of the end pressure relief fitting 4 is inserted into the corresponding sleeve end 11 and is provided with a pressure relief fixing ring groove 42 matching with the corresponding recessed ring 111. Therefore, by adopting the vacuum tube body 1 as a pipeline, the connecting end part connecting joint 3 and the end part pressure relief joint 4 are respectively rotated at the two ends of the vacuum tube body 1, and the inner concave ring 111 and the connecting fixing ring groove 32 are respectively adopted for connecting and matching, and the inner concave ring 111 and the pressure relief fixing ring groove 42 are respectively adopted for connecting and matching, so that the purposes of reducing the weight and the cost of the low-pressure vacuum tube body are achieved, and the low-pressure vacuum tube has the effects of simple structure, convenience in steering and capability of solving the problem of complex end part structure. At the same time, a connection sealing ring groove 33 is provided at the end of the end connection fitting 3 which is inserted into the sleeve end 11. And a sealing ring 5 which is abutted with the inner side wall of the corresponding sleeve pipe end 11 is arranged in the connecting sealing ring groove 33. A pressure relief sealing ring groove 43 is arranged at one end of the end pressure relief joint 4 inserted in the sleeve end 11. The pressure relief sealing ring groove 43 is internally provided with a sealing ring 5 which is abutted against the inner side wall of the corresponding sleeve end 11, so that the sealing ring 5 positioned in the connecting sealing ring groove 33 plays a role in obviously improving the connecting sealing performance between the end part connecting joint 3 and the corresponding end of the vacuum pipe body 1; the sealing ring 5 located in the pressure relief sealing ring groove 43 plays a role of remarkably improving the connection sealing performance between the end pressure relief joint 4 and the corresponding end of the vacuum pipe body 1.

As shown in fig. 2 and 3, the end connection joint 3 is L-shaped, so that the L-shaped end connection joint 3 can achieve the effect of convenient steering in the rotating process, and the problem of difficulty in the end connection structure is solved.

It should be mentioned that a pressure relief valve body 44 is arranged inside the end of the end pressure relief fitting 4 remote from the vacuum tube body 1. The pressure relief valve body 44 plays a role in stabilizing pressure relief, improving the practicability of the low-pressure vacuum tube and effectively prolonging the service life. In this application, the pressure relief valve body includes the valve body of one end grafting in tip pressure relief connects. And a valve body pressure relief plate is arranged on the inner side wall of the valve body. The pressure relief plate of the valve body is inserted with a pressure relief column. One end of the pressure relief column, which faces the end pressure relief joint, is provided with a pressure relief spring plate, and the pressure relief column is sleeved with a spring positioned between the pressure relief spring plate and the pressure relief plate of the valve body. A joint pressure relief plate is arranged at the end part of the end pressure relief joint, and a plug-in column head inserted into the joint pressure relief plate is arranged on the pressure relief column; and the valve body pressure relief plate and the joint pressure relief plate are both provided with a plurality of through holes. Therefore, when the air pressure is applied to the pressure relief spring plate, the spring is enabled to drive the pressure relief spring plate to move after being stressed and compressed, and then the flowing effect of air is achieved after the pressure relief spring plate is separated from the joint pressure relief plate, so that the structure is simple, and the purpose of effectively controlling the cost is achieved. Further, the plug bush cup joints the pressure release diaphragm with pressure release spring plate butt, and then will make atmospheric pressure to the pressure release diaphragm applys pressure, and then makes the pressure release diaphragm remove after making the spring atress compression, and then realizes gaseous mobile effect after pressure release diaphragm and joint pressure release plate separation, simple structure just reaches the purpose of effective control cost, and will show the closed sealing performance who promotes tip pressure release joint 4 and pressure release valve body 44 through setting up of pressure release diaphragm.

Meanwhile, an outlet inner cavity and an inlet inner cavity are formed in the valve body inner body. The internal diameter of import inner chamber is greater than the internal diameter of export inner chamber to be provided with the stopper that a plurality of radians distribute and with import inner chamber internal diameter butt on the periphery lateral wall of pressure release spring board. The diameter of spring matches with the internal diameter of export inner chamber, and valve body pressure release board is fixed on the inside wall of export inner chamber, and then reaches to show the purpose that promotes this pressure release valve body's pressure release stability.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present invention may occur to those skilled in the art without departing from the principle of the present invention, and such modifications and embellishments should also be considered as within the scope of the present invention.