CN212378848U

CN212378848U - Back pressure pipe connection structure of filler opening type fuel quantity sensor

Info

Publication number: CN212378848U
Application number: CN202021285738.4U
Authority: CN
Inventors: 魏玉龙; 杨昆峰; 于健; 李福健; 尹君; 周政
Original assignee: Anhui Jiangtian Cloud Control Technology Co ltd; China Tiesiju Civil Engineering Group Co Ltd CTCE Group
Current assignee: Anhui Jiangtian Cloud Control Technology Co ltd; China Tiesiju Civil Engineering Group Co Ltd CTCE Group
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-01-19
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a back pressure pipe connection structure of an oil filler type oil mass sensor, which comprises an oil filler, wherein a wire harness pipe is connected on the oil filler, a first joint is connected on the side wall of the oil filler, and the wire harness pipe is electrically connected with a sensor arranged at the bottom of an oil tank; set up the first through-hole that link up the first joint in the first joint, set up the second through-hole with outside intercommunication on the lateral wall of first through-hole, the second through-hole has the elbow fitting through threaded connection, the one end fixedly connected with backpressure trachea of keeping away from the second through-hole of elbow fitting, the tracheal inner chamber of backpressure is linked together with the first through-hole of first joint. The utility model discloses the backpressure trachea is linked together with outside atmosphere to avoid the gas pressure change in the oil tank to cause the influence to the pressure sensor's in the oil tank forced induction, thereby make pressure sensor's the accurate oil level that reacts the oil tank of change value change.

Description

Back pressure pipe connection structure of filler opening type fuel quantity sensor

The technical field is as follows:

the utility model relates to an oil mass sensor technical field especially relates to a back pressure union coupling structure of filler opening formula oil mass sensor.

Background art:

the oil quantity sensor is a detection device for detecting the oil quantity in an automobile oil tank, and changes the liquid level to be measured into an electric signal, so that the height of the oil level is linearly measured, and the oil level in the oil tank is conveniently monitored.

The oil mass sensor structure of current generally adopts a rigid metal pole to stretch into to the oil tank in, installs the response part in the metal pole, and the overall length of its sensor is the fixed value, and the oil mass sensor needs customize according to every different oil tank degree of depth, brings great inconvenience for the use. Therefore, a flexible fuel quantity sensor needs to be designed, in the flexible fuel quantity sensor, a wiring harness pipe for transmitting signals needs to be connected between a sensing component of the sensor and a fuel filling opening, and an existing joint for connecting the wiring harness pipe and the fuel filling opening cannot communicate gas in a fuel tank with external atmosphere, so that an improved joint needs to be provided.

The utility model has the following contents:

the utility model discloses the purpose is solved current fuel mass sensor flexonics in-process, and the connector that the pencil pipe of transmission signal and oil filler hole are connected can not provide an oil filler hole type fuel mass sensor's back pressure union coupling structure with the gaseous technical problem with outside atmosphere intercommunication in the oil tank.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a back pressure pipe connecting structure of an oil filler type oil mass sensor comprises an oil filler, wherein the bottom of the oil filler is fixedly connected with an oil filter screen through a screw, a wire harness pipe is connected to the oil filler, a signal wire for transmitting a signal is arranged in the wire harness pipe, a first mounting hole is formed in the bottom of the oil filler, a second mounting hole is formed in the side wall of the oil filler, a first connector is connected to the second mounting hole, and the other end of the wire harness pipe penetrates through the first mounting hole and is electrically connected with a sensor arranged at the bottom of an oil tank; the signal monitored by the sensor is transmitted through a signal wire in the beam tube;

set up the first through-hole that link up the first joint in the first joint, the one end outer wall of first joint is equipped with the external screw thread and passes through threaded connection on the oil filler hole, be equipped with the internal thread in the hole of the other end of first joint and have the second joint through threaded connection, set up the second through-hole with outside intercommunication on the lateral wall of first through-hole, the second through-hole has the elbow fitting through threaded connection, the one end fixedly connected with backpressure trachea of keeping away from the second through-hole of elbow fitting, the tracheal inner chamber of backpressure is linked together with the first through-hole of first joint.

Furthermore, the second connector comprises a first fixing sleeve, the first fixing sleeve is connected to the end of the first connector through threads, the first fixing sleeve is of a hollow structure, a stepped hole enlarged with an inner hole of an adjacent section is formed in one end, away from the first connector, of the first fixing sleeve, a rubber sealing sleeve is inserted in the stepped hole, an external thread is formed in the outer wall of one end, away from the first connector, of the first fixing sleeve, an extrusion sleeve is connected to the external thread through threads, a third through hole is formed in the end of the extrusion sleeve, an extrusion inclined plane is formed between the third through hole and the inner wall of the extrusion sleeve and faces the outer end of the rubber sealing sleeve, and the wire harness pipe penetrates through the first connector, the first fixing sleeve, the rubber sealing sleeve and the extrusion sleeve and is electrically connected with an external display end controller; the extrusion inclined plane is used for extruding the end part of the rubber sealing sleeve to enable the rubber sealing sleeve to be in sealing fit with the wiring harness pipe, and the outer diameter of the wiring harness pipe is smaller than the inner diameter of the first through hole in the first joint. The back pressure air pipe is used for communicating the air inside the oil filling opening with the atmosphere, so that the air pressure inside the oil tank is stable. The sensor adopts a voltage force type sensor.

Furthermore, the outer wall of the first fixing sleeve is provided with a limiting ring protruding outwards, and a first sealing ring is clamped between the side wall of the limiting ring and the end part of the first joint.

Furthermore, a guide chamfer is arranged at an orifice of one end of the first through hole, which is close to the oil filling port. The guide chamfer is used for guiding the bundle pipe when the bundle pipe is threaded, so that the bundle pipe is conveniently threaded.

Further, the elbow joint is a right-angle elbow joint, and the axis of the back pressure air pipe is parallel to the axis of the first through hole of the first joint. The back pressure air pipe and the wiring direction of the wiring harness pipe are consistent, and the installation is convenient.

Furthermore, one end of the outer side of the wire harness tube is electrically connected with a data wire joint.

The utility model provides a pair of refuel port formula fuel mass sensor's back pressure union coupling structure has following beneficial effect: the back pressure air pipe is communicated with the inner side of the oil filling port through the first through hole of the first connector, and is communicated with the external atmosphere, so that the gas in the oil tank is kept at an atmospheric pressure, the influence of the pressure change of the gas in the oil tank on the pressure induction of a pressure sensor in the oil tank is avoided, the change value of the pressure sensor accurately reflects the oil level change of the oil tank, and the accuracy of measuring the oil quantity is improved; keep sealed through rubber seal cover and pencil pipe in the second connects for thereby prevent that oil gas from overflowing from the pencil pipe end.

Description of the drawings:

the following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic perspective view of a back pressure pipe connection structure of a filler neck type fuel sensor according to the present invention;

fig. 2 is the utility model provides a pair of back pressure union coupling structure of filler type fuel quantity sensor overlooks the structure sketch map

Fig. 3 is a schematic cross-sectional structure view of a first joint in a back pressure pipe connection structure of a filler neck type fuel sensor provided by the present invention;

FIG. 4 is a partial structural view of a portion F in FIG. 3;

fig. 5 is the utility model provides a pair of structure schematic diagram of first joint in filler type fuel quantity sensor's back pressure union coupling structure.

The reference numbers in the figures illustrate: 1. an oil filler; 11. a first mounting hole; 12. a second mounting hole; 2. an oil filter screen; 3. a harness tube; 4. a first joint; 41. a first through hole; 42. a second through hole; 5. a sensor; 6. a second joint; 61. a first fixing sleeve; 611. a stepped bore; 612. a limiting ring; 62. a rubber sealing sleeve; 63. extruding a sleeve; 631. a third through hole; 632. extruding the inclined plane; 64. a first seal ring; 7. a pipe bending joint; 8. a back pressure air pipe; 9. and a data line connector.

The specific implementation mode is as follows:

it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up-down-left-right-front-back … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings) -motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.

As shown in fig. 1-5, a back pressure pipe connection structure of a filler neck type fuel sensor includes a filler neck 1, an oil filter screen 2 is fixedly connected to the bottom of the filler neck 1 through a screw, a wiring harness pipe 3 is connected to the filler neck 1, a signal line for transmitting a signal is arranged in the wiring harness pipe 3, a first mounting hole 11 is formed in the bottom of the filler neck 1, a second mounting hole 12 is formed in a side wall of the filler neck 1, a first joint 4 is connected to the second mounting hole 12, and the other end of the wiring harness pipe 3 passes through the first mounting hole 11 and is electrically connected to a sensor 5 placed at the bottom of an oil tank; the signal monitored by the sensor 5 is transmitted through a signal wire in the beam tube 3;

set up first through-hole 41 that link up first joint 4 in the first joint 4, the one end outer wall of first joint 4 is equipped with the external screw thread and passes through threaded connection on oil filler 1, be equipped with the internal thread in the hole of the other end of first joint 4 and have second joint 6 through threaded connection, set up the second through-hole 42 with outside intercommunication on the lateral wall of first through-hole 41, second through-hole 42 has elbow fitting 7 through threaded connection, the one end fixedly connected with back pressure trachea 8 of keeping away from second through-hole 42 of elbow fitting 7, the inner chamber of back pressure trachea 8 is linked together with first through-hole 41 of first joint 4.

Specifically, the second connector 6 comprises a first fixing sleeve 61, the first fixing sleeve 61 is connected to the end of the first connector 4 through a thread, the first fixing sleeve 61 is of a hollow structure, one end of the first fixing sleeve 61, which is far away from the first joint 4, is provided with a stepped hole 611 which is enlarged with an inner hole of an adjacent section, a rubber sealing sleeve 62 is inserted into the stepped hole 611, an external thread is arranged on the outer wall of one end of the first fixing sleeve 61 far away from the first joint 4, an extrusion sleeve 63 is connected on the external thread through a thread, a third through hole 631 is formed at the end of the extrusion sleeve 63, an extrusion inclined plane 632 is formed between the third through hole 631 and the inner wall of the extrusion sleeve 63, the extrusion inclined plane 632 faces the outer end of the rubber sealing sleeve 62, and the wire harness tube 3 passes through the first joint 4, the first fixing sleeve 61, the rubber sealing sleeve 62 and the extrusion sleeve 63 to be electrically connected with an external display end controller; the pressing inclined plane 632 is used for pressing the end of the rubber sealing sleeve 62 so as to form a sealing fit between the rubber sealing sleeve 62 and the wiring harness pipe 3, and the outer diameter of the wiring harness pipe 3 is smaller than the inner diameter of the first through hole 41 in the first joint 4. The back pressure air pipe 8 is used for communicating the air inside the oil filling port 1 with the atmosphere so as to stabilize the air pressure inside the oil tank. The sensor 5 is a voltage force type sensor 5.

Specifically, the outer wall of the first fixing sleeve 61 is provided with a limiting ring 612 protruding outwards, and a first sealing ring 64 is clamped between the side wall of the limiting ring 612 and the end of the first joint 4.

Specifically, a guide chamfer is arranged at one end of the first through hole 41 close to the oil filling port 1. The guide chamfer is used for guiding the beam tube 3 when the beam tube 3 is threaded, so that tube threading is facilitated.

Specifically, the elbow joint 7 is a right-angle elbow joint 7, and the axis of the back pressure air pipe 8 is parallel to the axis of the first through hole 41 of the first joint 4. The back pressure air pipe 8 and the wiring direction of the wire harness pipe 3 are consistent, and the installation is convenient.

Specifically, one end of the outer side of the cable harness tube 3 is electrically connected with a data cable joint 9.

Adopt above-mentioned technical scheme: the backpressure air pipe 8 is communicated with the inner side of the oil filling port 1 through the first through hole 41 of the first connector 4, so that the backpressure air pipe 8 is communicated with the outer atmosphere, the air in the oil tank is kept at the atmospheric pressure, the influence of the pressure change of the air in the oil tank on the pressure induction of the pressure sensor 5 in the oil tank is avoided, the change value of the pressure sensor 5 accurately reflects the oil level change of the oil tank, and the accuracy of measuring the oil amount is improved; the second joint 6 is kept sealed with the harness pipe 3 by the rubber sealing sleeve 62, so that the oil gas is prevented from overflowing from the end of the harness pipe 3.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is to be protected by the following claims and their equivalents.

Claims

1. The utility model provides a filler opening formula fuel quantity sensor's back pressure union coupling structure which characterized in that: the oil filter is characterized by comprising an oil filling port (1), wherein the bottom of the oil filling port (1) is fixedly connected with an oil filter screen (2) through a screw, the oil filling port (1) is connected with a wire harness pipe (3), a signal wire for transmitting a signal is arranged in the wire harness pipe (3), the bottom of the oil filling port (1) is provided with a first mounting hole (11), the side wall of the oil filling port (1) is provided with a second mounting hole (12), a first connector (4) is connected in the second mounting hole (12), and the other end of the wire harness pipe (3) penetrates through the first mounting hole (11) and is electrically connected with a sensor (5) placed at the bottom of an oil tank; the signals monitored by the sensor (5) are transmitted through signal wires in the beam tube (3);

offer first through-hole (41) that link up first joint (4) in first joint (4), the one end outer wall of first joint (4) is equipped with the external screw thread and connects on oil filler (1) through the external screw thread, be equipped with the internal thread in the hole of the other end of first joint (4) and have second joint (6) through female connection, set up second through-hole (42) with outside intercommunication on the lateral wall of first through-hole (41), second through-hole (42) have elbow fitting (7) through threaded connection, the one end fixedly connected with back pressure trachea (8) of keeping away from second through-hole (42) of elbow fitting (7), the inner chamber of back pressure trachea (8) is linked together with first through-hole (41) of first joint (4).

2. The back pressure pipe connection structure of a filler neck type fuel quantity sensor according to claim 1, characterized in that: second joint (6) are including first fixed cover (61), first fixed cover (61) are through the tip of threaded connection at first joint (4), first fixed cover (61) are hollow structure, the one end that first joint (4) were kept away from in first fixed cover (61) is equipped with step hole (611) with the increase of adjacent section hole, it has rubber seal cover (62) to alternate in step hole (611), there is extrusion cover (63) through threaded connection on seting up external screw thread and the external screw thread on the one end outer wall of keeping away from first joint (4) of first fixed cover (61), third through-hole (631) have been seted up to the tip of extrusion cover (63), be equipped with extrusion inclined plane (631) between third through-hole (631) and extrusion cover (63) inner wall, extrusion inclined plane (632) are towards the outer end of rubber seal cover (62), first joint (4) are passed in pencil pipe (3), The first fixing sleeve (61), the rubber sealing sleeve (62) and the extrusion sleeve (63) are electrically connected with the external display end controller; the extrusion inclined plane (632) is used for extruding the end part of the rubber sealing sleeve (62) to enable the rubber sealing sleeve (62) to be in sealing fit with the wiring harness pipe (3), and the outer diameter of the wiring harness pipe (3) is smaller than the inner diameter of the first through hole (41) in the first joint (4).

3. The back pressure pipe connection structure of a filler neck type fuel quantity sensor according to claim 2, characterized in that: the outer wall of the first fixing sleeve (61) is provided with a limiting ring (612) protruding outwards, and a first sealing ring (64) is clamped between the side wall of the limiting ring (612) and the end part of the first joint (4).

4. The back pressure pipe connection structure of a filler neck type fuel quantity sensor according to claim 1, characterized in that: a guide chamfer is arranged at an orifice at one end of the first through hole (41) close to the oil filling port (1); the guide chamfer is used for guiding the bundle pipe (3) when the bundle pipe (3) is threaded, so that the bundle pipe is convenient to thread.

5. The back pressure pipe connection structure of a filler neck type fuel quantity sensor according to claim 1, characterized in that: the elbow joint (7) is a right-angle elbow joint (7), and the axis of the backpressure air pipe (8) is parallel to the axis of the first through hole (41) of the first joint (4).