CN110594048B

CN110594048B - Tee pipe assembly

Info

Publication number: CN110594048B
Application number: CN201810600911.6A
Authority: CN
Inventors: 张莹莹; 周星达; 王宝珠; 韩彦宇; 郑冠宇
Original assignee: Vitesco Automotive Changchun Co Ltd
Current assignee: Synerject Automobile Electronic Changchun Co Ltd
Priority date: 2018-06-12
Filing date: 2018-06-12
Publication date: 2021-09-28
Anticipated expiration: 2038-06-12
Also published as: CN110594048A

Abstract

The invention provides a three-way pipe assembly, which comprises: a three-way pipe and a pressure sensor. The three-way pipe comprises at least one fixing column, and the fixing column is provided with a concave hole which extends along the axial direction of the fixing column and is provided with an opening at the end part. The pressure sensor includes at least one fixing hole. The fixed column stretches into the fixed orifices and the top of fixed column stretches out the fixed orifices, the fixed column is including the deformation region that is located the top of fixed column and outwards warp and the main part that is located deformation region below. The deformation region deforms outwardly along the perimeter of the recessed hole to secure the pressure sensor to the tee. According to the invention, the pressure sensor is fixed on the three-way pipe by arranging the fixing column on the three-way pipe, so that the pressure sensor is convenient to install and is durable and stable.

Description

Tee pipe assembly

Technical Field

The invention relates to a three-way pipe assembly, in particular to a three-way pipe assembly with a pressure sensor.

Background

In order to meet the Emission requirements of nation 6, OBD (On Board Diagnostics) detection needs to be performed in an EVAP (Evaporative Emission Control System) System. Installing a pressure sensor is one way to address OBD diagnostics.

The traditional method is that an installation platform is reserved in an EVAP pipeline of a whole vehicle to realize the installation of a sensor. But the tolerance degree of original product to fuel steam is general, has the risk of revealing after long-term the use. Meanwhile, the traditional layout realizes the connection of the pressure sensor and the three-way pipeline in a clamping mode. But the risk that the joint type probably breaks away from under long-term vibrations condition, the buckle vibrations for a long time and the danger that can appear breaking after using simultaneously make pressure sensor normally work. Meanwhile, the fuel vapor is leaked, and the environmental emission is influenced.

Disclosure of Invention

The invention aims to provide a tee pipe assembly which is convenient to install and is durable and stable.

According to one aspect of the present invention, there is provided a tee assembly comprising:

the three-way pipe comprises at least one fixing column, and the fixing column is provided with a concave hole which extends along the axial direction of the fixing column and is provided with an opening at the end part;

the pressure sensor comprises at least one fixing hole, the fixing column stretches into the fixing hole, the top end of the fixing column stretches out of the fixing hole, the fixing column comprises a deformation area and a main body, the deformation area is located at the top end of the fixing column and deforms outwards, the main body is located below the deformation area, and the deformation area deforms outwards along the periphery of the concave hole to fix the pressure sensor to the three-way pipe.

Preferably, the upper edge of the fixing hole is provided with a chamfer, and the deformation area of the fixing column is in surface contact with the chamfer at the upper edge of the fixing hole.

Preferably, the main body of the fixing column is in clearance fit with the fixing hole, and the upper surface of the deformation area is arc-shaped.

Preferably, the top ends of the fixing posts are deformed outwardly by means of heat staking.

Preferably, the fixing column is provided with a fixing rib plate matched with the fixing hole, and the fixing rib plate is matched with the fixing hole to fix the pressure sensor on the three-way pipe.

Preferably, the three-way pipe comprises a first fixing column and a second fixing column, the pressure sensor comprises a first fixing hole for the first fixing column to pass through and a second fixing hole for the second fixing column to pass through, and a fixing rib plate is arranged on the first fixing column and/or the second fixing column.

Preferably, the first rib plate is arranged on the first fixing column, the second rib plate and the third rib plate are arranged on the second fixing column, the first rib plate, the second rib plate and the third rib plate are connected to form an isosceles triangle, the first rib plate is located at the vertex of the isosceles triangle, the first rib plate is in contact with the first fixing hole, and the second rib plate and the third rib plate are in contact with the second fixing hole.

Preferably, the three-way pipe comprises an inflow end, an outflow end and a connecting end located between the first fixing column and the second fixing column, the pressure sensor comprises an extending end extending into the connecting end, a connecting hole located on the extending end, an accommodating space communicated with the connecting hole and a pressure chip arranged in the accommodating space, an annular groove is formed in the outer side of the extending end, and the three-way pipe comprises a sealing ring arranged in the annular groove and located between the extending end and the three-way pipe.

Preferably, the pressure sensor further comprises an outer cover, wherein the outer cover is fixed on the pressure sensor in a clamping mode and covers the accommodating space.

Preferably, the first fixing column, the second fixing column, the first fixing hole and the second fixing hole are all cylindrical, the first fixing column and the first fixing hole are concentric, and the second fixing column and the second fixing hole are concentric.

The tee pipe assembly provided by the invention has the advantages that the pressure sensor is fixed on the tee pipe by arranging the fixing column on the tee pipe, and the tee pipe assembly is convenient to install and is durable and stable.

Drawings

Figure 1 is a perspective view of a three-way tube assembly of the present invention.

Figure 2 is an exploded perspective view of the tee tube assembly of the present invention.

Figure 3 is an exploded cross-sectional view of the tee tube assembly of the present invention.

Figure 4 is an assembled cross-sectional view of the tee tube assembly of the present invention.

Fig. 5 is an enlarged view at "a" in fig. 4.

Figure 6 is a partial cross-sectional view of a tee tube assembly of the present invention.

Fig. 7 is an enlarged view of "B" in fig. 6.

Detailed Description

Referring to FIG. 1, the present invention provides a tee assembly 100 comprising a tee 1, a pressure sensor 2 secured to tee 1, and an outer cap 3 secured to pressure sensor 2.

Referring further to fig. 2, the tee 1 includes a first stationary post 12 and a second stationary post 13. The pressure sensor 2 includes a first fixing hole 23 through which the first fixing post 12 passes and a second fixing hole 24 through which the second fixing post 13 passes. Although the pressure sensor 2 is fixed to the tee 1 by providing two fixing posts in the present embodiment, it should be understood that the pressure sensor 2 may be fixed to the tee 1 by providing other numbers of fixing posts.

Referring further to fig. 3, the tee 1 further includes an inflow end 111, an outflow end 112, and a connection end 113 between the first stationary leg 12 and the second stationary leg 13. The connection ends 113 are connected to the inflow end 111 and the outflow end 112, respectively. The first fixing column 12 is provided with a first concave hole 123 which extends along the axial direction and is opened at the end part. The second fixing column 13 is provided with a second concave hole 133 which extends along the axial direction and is open at the end.

The pressure sensor 2 includes an extension end 22 extending into the connection end 113, a connection hole 25 located on the extension end 22, an accommodation space 21 communicating with the connection hole 25, and a pressure chip 26 disposed in the accommodation space 21. The outside of the extension end 22 is provided with an annular groove 27. Tee 2 includes a sealing ring 4 disposed within annular groove 27 and between extension end 22 and tee 1. The pressure chip 26 may be used to measure the pressure inside the tee 1.

The outer cover 3 is fixed to the pressure sensor 2 in a snap-fit manner and covers the accommodating space 21. Through setting up enclosing cover 3, can avoid outside object to touch the fixed glue that is used for fixed pressure chip 26 in the accommodation space 21 to play the effect of protection fixed glue. The four clamping pins 31 are arranged, and the clamping pins 31 are fixed on the pressure sensor 2 in a clamping manner.

As further shown in fig. 4 and 5, the first fixing post 12 and the second fixing post 13 respectively extend into the first fixing hole 23 and the second fixing hole 24, and top ends of the first fixing post 12 and the second fixing post 13 respectively extend out of the first fixing hole 23 and the second fixing hole 24. The first fixing column 12 includes a first deformation region 121 located at the top end and deformed outward, and a first main body 122 located below the first deformation region 121. The second fixing post 13 includes a second deformation region 131 located at the top end and deformed outward, and a second body 132 located below the second deformation region 131. The first and

second deformation regions

121, 131 are deformed outwardly along the peripheries of the first and second recessed

holes

123, 133, respectively, to fix the pressure sensor 2 to the three-way pipe 1. In a preferred embodiment, the first and second

deformed regions

121, 131 are deformed by heat staking.

Preferably, the upper surface 123 of the first deformed region 121 is arcuate, and the upper surface of the second deformed region 131 is also arcuate. The first body 122 and the second body 132 are in clearance fit with the first fixing hole 23 and the second fixing hole 24, respectively.

The upper edge of the first fixing hole 23 is provided with a first chamfer 231, and the upper edge of the second fixing hole 24 is provided with a second chamfer 241. The first deformation area 121 of the first fixing pillar 12 is in surface contact with the first chamfer 231. The second deformation region 131 of the second fixing column 13 is in surface contact with the second chamfer 241. With this arrangement, the probability of the first and

second deformation regions

121 and 131 being damaged by a force when in use can be reduced.

Referring to fig. 6 and 7, the first rib 124 is disposed on the first fixing column 12, and the second rib 134 and the third rib 135 are disposed on the second fixing column 13. The first rib 124, the second rib 134, and the third rib 135 are connected to form an isosceles triangle and the first rib 124 is located at the apex of the isosceles triangle. The first rib 124 contacts the first fixing hole 23, and the second and

third ribs

134, 135 contact the second fixing hole 24. With this arrangement, the first rib 124, the second rib 134, and the third rib 125 can play a role of positioning when the pressure sensor 2 is assembled to the tee 1.

The first fixing column 12, the second fixing column 13, the first fixing hole 23 and the second fixing hole 24 are all cylindrical. The first fixing post 12 is concentric with the first fixing hole 23, and the second fixing post 13 is concentric with the second fixing hole 24. The first ribs 124, the second ribs 134, and the third ribs 135 are identical in structure.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A tee assembly, comprising:

the tee joint pipe (1) comprises at least one fixed column (12, 13), and the fixed column (12, 13) is provided with a concave hole (123, 133) which extends along the axial direction of the fixed column and is opened at the end part;

a pressure sensor (2), wherein the pressure sensor (2) comprises at least one fixing hole (23, 24), the fixing column (12, 13) extends into the fixing hole (23, 24) and the top end of the fixing column (12, 13) extends out of the fixing hole (23, 24), the fixing column (12, 13) comprises a deformation area (121, 131) which is positioned at the top end of the fixing column (12, 13) and deforms outwards, and a main body (122, 132) which is positioned below the deformation area (121, 131), and the deformation area (121, 131) deforms outwards along the periphery of the concave hole (123, 133) to fix the pressure sensor (2) on the three-way pipe (1);

the fixed columns (12, 13) are provided with fixed ribs (124, 134, 135) matched with the fixed holes (23, 24), and the fixed ribs (124, 134, 135) are matched with the fixed holes (23, 24) to fix the pressure sensor (2) on the three-way pipe (1);

the three-way pipe (1) comprises a first fixing column (12) and a second fixing column (13), the pressure sensor (2) comprises a first fixing hole (23) for the first fixing column (12) to pass through and a second fixing hole (24) for the second fixing column (13) to pass through, and fixing rib plates (124, 134, 135) are arranged on the first fixing column (12) and/or the second fixing column (13);

the first rib plate (124) is arranged on the first fixing column (12), the second rib plate (134) and the third rib plate (135) are arranged on the second fixing column (13), the first rib plate (124), the second rib plate (134) and the third rib plate (135) are connected to form an isosceles triangle, the first rib plate (124) is located at the vertex of the isosceles triangle, the first rib plate (124) is in contact with the first fixing hole (23), and the second rib plate (134) and the third rib plate (135) are in contact with the second fixing hole (24).

2. The tee assembly of claim 1, wherein the upper edge of the fixing bore (23, 24) is provided with a chamfer (231, 241), and the deformed region (121, 131) of the fixing post (12, 13) is in surface contact with the chamfer (231, 241) at the upper edge of the fixing bore (23, 24).

3. The tee assembly of claim 1, wherein the body (122, 132) of the fixation post (12, 13) is a clearance fit with the fixation bore (23, 24), and the upper surface (123) of the deformation region (121, 131) is arcuate.

4. The tee assembly of claim 1, wherein the top ends of the fixing posts (12, 13) are deformed outwardly by heat staking.

5. The tee assembly of claim 1, wherein the tee (1) comprises an inflow end (111), an outflow end (112) and a connection end (113) between the first and second fixing columns (12, 13), the pressure sensor (2) comprises an extension end (22) extending into the connection end (113), a connection hole (25) located on the extension end (22), a housing space (21) communicating with the connection hole (25), and a pressure chip (26) disposed in the housing space (21), an annular groove (27) is disposed on an outer side of the extension end (22), and the pressure sensor (2) comprises a sealing ring (4) disposed in the annular groove (27) and between the extension end (22) and the tee (1).

6. The tee pipe assembly according to claim 5, characterized in that it further comprises an outer cover (3), said outer cover (3) being fixed to the pressure sensor (2) by means of a snap fit and covering the housing space (21).

7. The tee assembly of claim 1, wherein the first stationary post (12), the second stationary post (13), the first stationary bore (23), and the second stationary bore (24) are all cylindrical, the first stationary post (12) and the first stationary bore (23) being concentric, the second stationary post (13) and the second stationary bore (24) being concentric.