CN112729101B

CN112729101B - Position sensor mounting structure and vehicle

Info

Publication number: CN112729101B
Application number: CN202011552786.XA
Authority: CN
Inventors: 潘畅; 吴丽芳; 邢政
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-12-28
Anticipated expiration: 2040-12-24
Also published as: CN112729101A

Abstract

The application relates to the technical field of automobiles, and discloses a mounting structure of a position sensor and a vehicle, wherein the position sensor in the mounting structure is mounted on an engine cylinder cover or a valve chamber cover; the engine cylinder cover or the valve chamber cover is provided with a mounting sleeve, and the lower end of the mounting sleeve faces to a signal wheel of the engine; a supporting part in the position sensor is hermetically connected with the upper end of the mounting sleeve, and a first end of the supporting part extends into the mounting sleeve; the plug part is connected with the second end of the supporting part, the plug part is positioned outside the mounting sleeve, and the first end is opposite to the second end; the printed circuit board and the Hall chip are connected with the supporting part and are positioned inside the mounting sleeve. The application provides a position sensor's mounting structure and vehicle can reduce the required space of position sensor installation to reduce the clearance overproof risk between position sensor and the signal wheel and position sensor mounted position department and take place the risk of leaking.

Description

Position sensor mounting structure and vehicle

Technical Field

The application relates to the technical field of automobiles, in particular to a mounting structure of a position sensor and a vehicle.

Background

The position sensor of the engine camshaft collects the position signal of the distribution camshaft and outputs the position signal to an Electronic Control Unit (ECU) of the engine, so that the ECU identifies the compression top dead center of the engine 1 cylinder to perform sequential oil injection Control, ignition timing Control and detonation Control.

In the related art, the position sensor is mounted as a separate part on the engine valve chamber cover or the cylinder head by bolts after the position sensor is assembled, so as to monitor the position signal of the camshaft of the engine in real time. A seal ring is assembled in the camshaft position sensor to effect a seal between the position sensor and a mounting hole in the cover or cylinder head.

In the course of implementing the present application, the inventors found that the related art has at least the following problems:

more assembly space needs to be reserved in the mounting structure of the existing position sensor, the size tolerance of more related parts needs to be considered in the gap between the position sensor and the signal wheel, the out-of-tolerance risk is large, and the leakage risk also exists in the sealing mode.

Disclosure of Invention

In view of the above, the present application provides a mounting structure of a position sensor and a vehicle, which can reduce the space required for mounting the position sensor, and reduce the risk of gap tolerance between the position sensor and a signal wheel and the risk of leakage at the mounting position of the position sensor. Specifically, the method comprises the following technical scheme:

the embodiment of the application provides a mounting structure of a position sensor, which comprises the position sensor and at least one of an engine cylinder cover and a valve chamber cover;

the position sensor is mounted on the engine cylinder cover or the valve chamber cover;

the engine cylinder cover or the valve chamber cover is provided with a mounting sleeve, and the lower end of the mounting sleeve faces to a signal wheel of the engine;

the position sensor comprises a supporting part, a plug part, a printed circuit board and a Hall chip; wherein the content of the first and second substances,

the supporting part is connected with the upper end of the mounting sleeve in a sealing mode, and the first end of the supporting part extends into the mounting sleeve;

the connecting part is connected with the second end of the supporting part, the connecting part is positioned outside the mounting sleeve, and the first end is opposite to the second end;

the printed circuit board and the Hall chip are connected with the supporting part, and the printed circuit board and the Hall chip are located inside the mounting sleeve.

In an implementation manner of the embodiment of the application, an upper end of the mounting sleeve is open, and a first end of the supporting portion extends into the mounting sleeve from the opening;

the lower end of the mounting sleeve is closed, and the lower end of the mounting sleeve is connected with the Hall chip.

In an implementation manner of the embodiment of the application, the lower end in the installation sleeve is provided with the positioning portion, and the positioning portion is matched with the Hall chip in shape and is limited to the Hall chip.

In one implementation manner of the embodiment of the present application, the position sensor further includes a fitting portion;

the matching part is connected with the supporting part;

an upper end of the mounting sleeve is at least partially inserted into a lower end of the fitting portion.

In an implementation manner of the embodiment of the application, a buckle is arranged on the outer side of the upper end of the mounting sleeve, a clamping groove is formed in the matching portion, and the buckle is matched with the clamping groove.

In one implementation manner of the embodiment of the present application, the patch panel includes a pin and a patch housing;

the contact pin is connected with the supporting part and the printed circuit board;

the plug housing is connected with the upper end of the matching part, and one part of the plug housing is positioned on the outer side of the contact pin.

In one implementation of the embodiment of the present application, the socket housing includes a first housing and a second housing;

the first shell is connected with the matching part, and the second shell is positioned on the outer side of the contact pin.

In one implementation of the embodiment of the present application, the mating portion and the plug portion are injection molded.

In one implementation of the embodiment of the present application, the position sensor is welded to the engine cylinder head or the valve chamber cover.

The embodiment of the application also provides a vehicle, and the vehicle is provided with the installation structure of the position sensor.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

compared with the traditional mounting structure of the position sensor, the mounting structure of the position sensor provided by the embodiment of the application cancels a shell, a packaging sleeve and a sealing ring in the traditional position sensor, packages a printed circuit board and a Hall chip in the position sensor in the mounting sleeve on an engine cylinder cover or a valve chamber cover cap, and reduces the risk of gap tolerance between the position sensor and a signal wheel; and the supporting part in the position sensor is directly connected with the upper end of the mounting sleeve in a sealing manner, so that the risk of gap tolerance between the position sensor and the signal wheel is reduced, and the risk of leakage is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram illustrating a mounting structure of a position sensor according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a conventional position sensor;

fig. 3 is a schematic structural view showing a conventional mounting structure of a position sensor;

FIG. 4 is a schematic structural diagram illustrating another position sensor mounting structure provided in an embodiment of the present application;

fig. 5 shows a schematic structural diagram of a card slot provided in an embodiment of the present application.

The reference numerals in the drawings denote:

1. a position sensor; 11. a support portion; 12. a plug-in part; 121. a plug-in housing; 1211. a first housing; 1212. a second housing; 13. a printed circuit board; 14. a Hall chip; 15. a fitting portion; 16. a card slot; 161. a first straight section; 162. a second straight section; 163. an inclined section; 164. a chute; 17. a fixed part; 2. an engine cylinder head; 3. a valve chamber cover; 4. installing a sleeve; 41. a positioning part; 42. buckling; 5. a signal wheel; 6. a conventional position sensor; 61. a housing; 611. a housing sleeve; 612. mounting a bracket; 613. an installation part; 614. a bushing; 62. a core body; 63. a wiring terminal; 64. an integrated circuit board; 65. a Hall element; 66. packaging the sleeve; 67. a seal ring; 7. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to make the technical solutions and advantages of the present application more clear, the following will describe the mounting structure, functions, advantages, etc. of the position sensor in detail with reference to the accompanying drawings.

The embodiment of the present application provides a mounting structure of a position sensor, as shown in fig. 1, including a position sensor 1 and a valve chamber cover 3. The position sensor 1 is mounted on a valve chamber cover 3. The valve chamber cover 3 has a mounting sleeve 4 thereon, and the lower end of the mounting sleeve 4 faces a signal wheel 5 of the engine. The position sensor 1 includes a support portion 11, a patch portion 12, a Printed Circuit Board 13 (hereinafter, PCB), and a hall chip 14. Wherein, the supporting portion 11 is connected with the upper end of the mounting sleeve 4 in a sealing manner, and the first end of the supporting portion 11 extends into the mounting sleeve 4.

A patch 12 is connected to the second end of the support 11, the patch 12 being located outside the mounting sleeve 4. The first end and the second end of the support portion 11 are opposed.

A PCB circuit board 13 and a hall chip 14 are connected to the support portion 11, the PCB circuit board 13 and the hall chip 14 being located inside the mounting sleeve 4.

In the embodiment of the present application, only the position sensor 1 is shown as being mounted on the valve chamber cover 3 as an example. It will be appreciated by those skilled in the art that the mounting structure may also include an engine head 2, with the position sensor 1 being mounted on the engine head 2 (in which case the valve chamber cover 3 may not be included in the mounting structure).

In this case, the mounting sleeve 4 may be provided on the engine head 2, and the lower end of the mounting sleeve 4 may be directed toward the signal wheel 5 of the engine. The structure of the position sensor 1 and the manner of connection between the position sensor 1 and the mounting sleeve 4 may be the same as when the position sensor 1 is mounted on the valve chamber cover 3.

It should be noted that "upper end" and "lower end" in the embodiment of the present application are described based on the positional relationship shown in fig. 1. In practice, the lower end may refer to the end of the signal wheel 5 close to the engine, and the upper end may refer to the end of the signal wheel 5 remote from the engine.

The embodiment of the application takes a Hall position sensor 1 as an example, and the position sensor 1 is arranged around a signal wheel 5 of an engine camshaft. The signal wheel 5 can rotate along with the camshaft, and the circumference of the signal wheel 5 is provided with a concave part with teeth towards the direction close to the axis and a convex part with teeth towards the direction far away from the axis.

A hall element which can provide a magnetic field is integrated in a hall chip 14 in the position sensor 1, and the hall chip 14 is connected with the PCB circuit board 13. The hall chip 14 may have associated processing circuitry integrated thereon, and the PCB circuit board 13 may also have processing circuitry integrated thereon. In some embodiments of the present application, the PCB circuit board 13 has no processing circuit and is only used to fix the hall chip 14 and the pins in the patch panel 12.

When the missing teeth and the convex teeth on the signal wheel 5 move, the magnetic field can be cut, so that different voltage values are transmitted based on the Hall effect, the voltage values are converted into high and low level signals with constant amplitude through a relevant processing circuit and are output to the plug-in unit 12, and finally the high and low level signals are transmitted to the ECU through the plug-in unit 12. The ECU, in combination with the cam signal provided by the position sensor 1 and the crank signal provided by the crank position sensor 1, can determine the compression top dead center of the cylinder 1 (when the piston makes a linear reciprocating motion in the cylinder, the top of the piston moves upward to the highest position, i.e., the extreme position at which the top of the piston is farthest from the center of rotation of the crankshaft, which is called the top dead center).

In order to fully show the improvement of the mounting structure of the position sensor provided by the embodiment of the present application and the advantages thereof, the present application also shows a conventional position sensor and the mounting structure of the position sensor. As shown in fig. 2, a conventional position sensor 1 may generally include a housing, a core 62, terminals 63, an integrated circuit board 64, a hall element 65, and an encapsulation sleeve 66.

Wherein the housing may be connected to a valve chamber cover of the engine. The housing includes a housing sleeve 611 and a mounting bracket 612, one end of the mounting bracket 612 extending away from the outside of the housing forming a mounting portion 613. The mounting portion 613 has a positioning hole, and a bushing 614 is disposed in the positioning hole. As shown in fig. 3, the bolt may be connected to the valve chamber cover through the positioning hole.

The core 62 is inserted into the housing sleeve 611 and a first end of the core 62 is connected to the terminal 63 and a second end of the core 62 protrudes to an end of the housing sleeve 611 remote from the mounting bracket 612. The wire terminals 63 protrude to the outside of the mounting bracket 612 and extend toward an end opposite to the mounting portion 613.

The core 62 and the integrated circuit board 64 may be connected with the hall element 65, and the encapsulation sleeve 66 may be connected with the lower end of the housing sleeve 611 to encapsulate the core 62 protruding to the outside of the housing sleeve 611, the hall element 65 connected with the core 62, and the integrated circuit board 64 within the encapsulation sleeve 66.

In addition, the conventional position sensor 1 is provided with a sealing ring 67, and the sealing ring 67 is sleeved outside the housing sleeve 611 and positioned below the mounting bracket 612 so as to seal the mounting structure of the position sensor 1. Specifically, as shown in fig. 3, when the conventional position sensor 1 is mounted on a valve chamber cover of an engine, the valve chamber cover may be provided with mounting holes 7, and the mounting holes 7 may penetrate both the inside and the outside of the valve chamber cover. The mounting bracket 612 in the position sensor 1 can abut against the upper end of the mounting hole 7, so that the part below the mounting bracket 612 passes through the mounting hole 7 and extends into a cavity formed by a valve chamber cover, and the packaging sleeve 66 is matched with a signal wheel 5 on an engine camshaft.

The outer diameter of the packing 67 is larger than the inner diameter of the mounting hole 7 so that the packing 67 is in close contact with the inner surface of the mounting hole 7 to form a seal.

According to the traditional mounting structure of the position sensor 1, the position sensor 1 is fastened and positioned through bolts, so that enough assembly space needs to be reserved to meet the assembly of the bolts, and the arrangement of other parts in an engine is influenced; and traditional position sensor 1 and mounting hole 7 are sealed through sealing washer 67 between, have the leakage risk to lead to the inside oil gas of engine to leak, cause the gasoline smell of automobile engine to be heavy scheduling problem. In addition, the conventional position sensor 1 is assembled as a single component to the valve chamber cover 3 after the assembly is completed, which increases the assembly process and man-hours of the engine. When the position sensor 1 is assembled, the position distance deviation from the mounting surface of the position sensor 1 to the center of the camshaft needs to be considered more, and then the gap between the head of the position sensor 1 and the signal wheel 5 on the camshaft is determined, at the moment, the gap has the risk that the requirement of the sensor gap is not met, so that the problems of sensor signal abnormity, sensor damage and the like are caused, and the oil injection and ignition control of an engine are influenced.

Compared with the traditional mounting structure of the position sensor, the mounting structure of the position sensor provided by the embodiment of the application cancels the shell 61, the packaging sleeve 66 and the sealing ring 67 in the traditional position sensor, packages the PCB 13 and the Hall chip 14 in the position sensor 1 in the mounting sleeve 4 on the engine cylinder cover 2 or the valve chamber cover 3, and reduces the risk of gap tolerance between the position sensor 1 and the signal wheel 5; and the supporting part 11 in the position sensor 1 is directly connected with the upper end of the mounting sleeve 4 in a sealing manner, so that the risk of gap tolerance between the position sensor 1 and the signal wheel 5 is reduced, and the risk of leakage is effectively reduced. In addition, the position sensor 1 is not assembled as a unit part any more, but is integrated with the valve chamber cover 3 or the engine cylinder head 2 capable of achieving the same purpose for supply, and is not required to be fixed by bolts, so that the material use is reduced, the types and the number of parts of the engine are reduced, the assembly process and the working hour of the engine are reduced, and the cost and the labor are saved.

In the mounting structure of the position sensor 1 provided in the embodiment of the present application, the patch section 12 may optionally include a plug pin (not shown) and a patch housing 121, as shown in fig. 1. Wherein the pin can be connected with the supporting portion 11 and the PCB circuit board 13. The connector housing 121 may be connected to the upper end of the mating part 15, and a portion of the connector housing 121 may be located outside the pins.

Specifically, the plug portion 12 and the support portion 11 may be integrally injection molded. In this manner, the pins can be encapsulated in the support portion 11 and the connector housing 121 by injection molding. An injection-molded filling layer is arranged between the pin and the support part 11 and the contact housing.

Further, one end of the pin may be located inside the socket housing 121, and the other end of the pin may be soldered to a pin on the PCB circuit board 13, so as to transmit the sensor signal to the ECU. In other embodiments of the present application, the other end of the pin may be soldered to the PCB 13 through a wire, thereby reducing the length requirement for the pin. Alternatively, the PCB 13 itself may have a length of wire wound up on the support portion 11, and the pins may be connected to the wire on the PCB 13 to reduce the length requirement for the pins and meet more layout application requirements.

In other embodiments of the present application, the patch part 12 and the support part 11 may be formed separately and assembled together. In this manner, the outer surface of the supporting portion 11 may be provided with a fixing member by which the pin is fixed to the supporting portion 11 and connected to the PCB circuit board 13.

For example, the fixing member may be a U-shaped member, and a threading hole may be formed between the U-shaped member and the outer surface of the supporting portion 11 to pass the pin therethrough. One end of the pin can be coated in the plug-in housing 121 by injection molding, and the other end can penetrate through the threading hole on the supporting part 11 to be welded with the pin on the PCB 13.

Similarly, in other embodiments of the present application, the other end of the pin may be connected to a wire, and the wire is passed through the fixing member on the supporting portion 11 to be soldered to the PCB 13, so as to reduce the length requirement of the pin and the design requirement for the position of the fixing member. Or, the PCB 13 itself may have a section of conducting wire, the conducting wire is wound up on the supporting portion 11 through a fixing member, and the pin may be connected to the conducting wire on the PCB 13, so as to reduce the length requirement for the pin, and simultaneously, meet more layout application requirements.

Alternatively, as shown in fig. 1, the position sensor 1 may further include a fitting portion 15, the fitting portion 15 may be connected to the support portion 11, and an upper end of the fitting portion 15 may be connected to the patch portion 12. The upper end of the mounting sleeve 4 may be at least partially inserted into the lower end of the mating portion 15.

In some embodiments of the present application, the supporting portion 11, the connecting portion 12 and the mating portion 15 may be integrally injection molded. Alternatively, the engagement portion 15 and the support portion 11 are injection molded, and the connection portion 12 is separately molded and then assembled with the support portion 11 and the engagement portion 15. Alternatively, the fitting portion 15 and the insertion portion 12 may be injection molded and then assembled with the support portion 11. When the patch part 12 and the support part 11 are formed separately, the patch part 12 can be fixed to the mating part 15.

Alternatively, as shown in fig. 1 or 4, the socket housing 121 may include a first housing 1211 and a second housing 1212. The first housing 1211 can be connected to the mating portion 15, and the second housing 1212 can be located outside the pin. Specifically, when the patch section 12 is formed separately, as shown in fig. 4, the upper end of the fitting section 15 may be further connected with a fixing section 17, and the outer surface of the fixing section 17 may be connected with the inner surface of the second housing 1212. The fixing portion 17 may be screwed to the second housing 1212. Or a snap and groove structure with interference fit can be adopted between the fixing portion 17 and the second housing 1212 to limit the second housing 1212 from moving relative to the fixing portion 17. The fixing portion 17 may be integrally formed with the mating portion 15 as a part of the mating portion 15.

In some embodiments of the present application, the connector housing 121 may be a sleeve having a corner. For example, the first casing 1211 and the second casing 1212 may be perpendicular to each other, and the interiors of the first casing 1211 and the second casing 1212 are communicated with each other. Fig. 4 shows a section of the inside and outside of the corners of the connector housing, respectively, to show the internal structure of the connector housing 121.

Alternatively, as shown in fig. 1, the mounting sleeve 4 may have a snap 42 on the outer side of the upper end thereof, and the engaging portion 15 may have a catch 16 thereon, the snap 42 and the catch 16 being engaged with each other.

In the embodiment of the present application, a plurality of buckles 42 may be arranged at intervals in the circumferential direction of the mounting sleeve 4, and correspondingly, a plurality of slots 16 may also be arranged at intervals on the matching portion 15.

As shown in fig. 1 and 5, the outer side of the catch 42 may include a tapered surface. Specifically, the clasp 42 may include a ramped clasp and a snap ring. Wherein the thickness of the inclined buckle along the horizontal direction is gradually reduced from bottom to top. The lower extreme that the snap ring and this slope were buckled links to each other, and the thickness of this snap ring along the horizontal direction is greater than the biggest thickness of slope knot along the horizontal direction. That is, the outer side surface of the snap ring is away from the inner wall of the mounting sleeve 4 with respect to the outer side surface of the inclined buckle. The shape of the card slot 16 may be similar to the shape of the catch 42 and there may be an interference fit between the card slot 16 and the catch 42. Specifically, as shown in fig. 5, the slot 16 may be divided into three sections from bottom to top, which are a first straight section 161, a second straight section 162 and an inclined section 163 sequentially. The first straight section 161 is adapted to receive the side wall of the mounting sleeve 4 between the lower end surface of the retainer ring and the upper surface of the valve chamber cover 3 adjacent thereto. The second straight section 162 is adapted to receive a snap ring, and the second straight section 162 penetrates through the outer surface of the mating portion 15. The angled section 163 is adapted to receive an angled buckle in the buckle 42.

When the position sensor 1 is installed, the positions of the catch 42 and the catch groove 16 may not be aligned, so that the position sensor 1 needs to be rotated so that the snap ring can protrude through the second straight section 162 when the position sensor 1 is installed. As shown in fig. 5, a sliding groove 164 may be provided on the inner wall of the first straight section 161, and when the position sensor 1 is rotated until the latch 42 is placed in the sliding groove 164, the position sensor 1 is directly pressed downward to be installed in position, so as to avoid the problem of misalignment between the latch 42 and the card slot 16.

Alternatively, the position sensor 1 may be welded to the engine head 2 or the valve chamber cover 3 when the need for disassembly and maintenance of the position sensor 1 is not a concern. For example, the inner surface of the fitting portion 15 and the outer surface of the upper end of the mounting sleeve 4 may be welded together, so that a closed cavity structure is formed in the mounting sleeve 4. Alternatively, a part of the side wall of the support portion 11 may be directly welded to the inside of the mounting sleeve 4. In this case, the support portion 11 may be made of a metal material. When the material of the engine cylinder cover 2 or the valve chamber cover 3 cannot meet the welding requirement, the assembling structure of the buckle 42 and the clamping groove 16 can be adopted.

Alternatively, the upper end of the mounting sleeve 4 may be open, from which the first end of the support portion 11 protrudes into the interior of the mounting sleeve 4. The lower end of the mounting sleeve 4 is closed and the lower end of the mounting sleeve 4 can be connected to the hall chip 14.

In the embodiment of the present application, the degree of depth of installation sleeve 4 can preset along the length of vertical direction promptly, and is corresponding, and the second end of supporting part 11 stretches into also can preset to the inside length of this installation sleeve 4 to avoid owing to stretch into length undersize, lead to hall chip 14 installation unstable, or owing to stretch into length too big, lead to hall chip 14 atress too big to be damaged and sealed not tight scheduling problem between installation sleeve 4 and the cooperation portion 15. In addition, the depth of the mounting sleeve 4 and the length of the second end of the supporting portion 11 extending into the mounting sleeve 4 are matched to meet the requirement of the gap between the hall chip 14 and the signal wheel, and the gap requirement can be determined according to the performance of the hall chip 14. After the position sensor 1 and the mounting sleeve 4 are assembled, the distance between the hall chip 14 and the outer surface of the bottom end of the mounting sleeve 4 is fixed, for example, the hall chip 14 can be limited at the bottom end of the mounting sleeve 4, so that the requirement of the gap between the hall chip 14 and the signal wheel can be equivalent to the requirement of the gap between the outer surface of the bottom end of the mounting sleeve 4 and the signal wheel.

In some embodiments of the present application, the hall chip 14 may be fixed on the supporting portion 11, so that the position of the hall chip 14 may be fixed without abutting or contacting the mounting sleeve 4. Or the hall chip 14 and the supporting portion 11 can be separated from each other, when the position sensor 1 is installed in place, the lower end of the supporting portion 11 is abutted or contacted with the upper end face of the hall chip 14, and the installation sleeve 4 limits the lower end face of the hall chip 14, so that the position of the installation sleeve 4 is fixed.

Alternatively, as shown in fig. 1, the lower end inside the mounting sleeve 4 may have a positioning portion 41, and the positioning portion 41 is adapted to the shape of the hall chip 14 to limit the hall chip 14. For example, the positioning portion 41 may have an arc shape or a rectangular parallelepiped shape. When the position sensor 1 is mounted in place, the positioning portion 41 is engaged with the lower end surface of the hall chip 14.

Compared with the traditional mounting structure of the position sensor, the mounting structure of the position sensor 1 provided by the embodiment of the application cancels the shell 61, the packaging sleeve 66 and the sealing ring 67 in the traditional position sensor, packages the printed circuit board 13 and the Hall chip 14 in the position sensor 1 in the mounting sleeve 4 on the engine cylinder cover 2 or the valve chamber cover 3, and reduces the risk of gap tolerance between the position sensor 1 and the signal wheel 5; and the supporting part 11 in the position sensor 1 is directly connected with the upper end of the mounting sleeve 4 in a sealing way, so that the risk of gap tolerance between the position sensor and the signal wheel is reduced, and the risk of leakage is effectively reduced.

In addition, the position sensor 1 is not assembled as a unit part any more, but is integrated with the valve chamber cover 3 or the engine cylinder head 2 capable of achieving the same purpose for supply, and is not required to be fixed by bolts, so that the material use is reduced, the types and the number of parts of the engine are reduced, the assembly process and the working hour of the engine are reduced, and the cost and the labor are saved.

The embodiment of the present application also provides a vehicle having the above mounting structure of the position sensor 1.

In particular, the vehicle has therein a position sensor 1 and an engine cylinder head 2 and/or a valve chamber cover 3; the position sensor 1 is arranged on an engine cylinder cover 2 or a valve chamber cover 3;

the engine cylinder cover 2 or the valve chamber cover 3 is provided with a mounting sleeve 4, and the lower end of the mounting sleeve 4 faces to a signal wheel 5 of the engine;

the position sensor 1 includes a support portion 11, a patch portion 12, a printed circuit board 13, and a hall chip 14; wherein the content of the first and second substances,

the supporting part 11 is connected with the upper end of the mounting sleeve 4 in a sealing way, and the first end of the supporting part 11 extends into the mounting sleeve 4;

a patch part 12 is connected with a second end of the supporting part 11, the patch part 12 is positioned outside the mounting sleeve 4, and the first end is opposite to the second end;

a printed circuit board 13 and a hall chip 14 are connected to the support 11, the printed circuit board 13 and the hall chip 14 being located inside the mounting sleeve 4.

Optionally, the upper end of the mounting sleeve 4 is open, and the first end of the supporting part 11 extends into the mounting sleeve 4 from the opening;

the lower end of the mounting sleeve 4 is closed and the lower end of the mounting sleeve 4 is connected to the hall chip 14.

Optionally, the lower end in the mounting sleeve 4 has a positioning portion 41, and the positioning portion 41 is adapted to the shape of the hall chip 14 to limit the hall chip 14.

Optionally, the position sensor 1 further comprises a fitting portion 15;

the fitting portion 15 is connected to the support portion 11;

the upper end of the mounting sleeve 4 is at least partially inserted into the lower end of the fitting 15.

Optionally, the mounting sleeve 4 has a snap 42 on the outer side of the upper end thereof, the mating portion 15 has a snap groove 16 thereon, and the snap 42 and the snap groove 16 are mated.

Optionally, the patch section 12 comprises pins and a patch housing 121;

the contact pin is connected with the supporting part 11 and the printed circuit board 13;

the connector housing 121 is connected to the upper end of the mating part 15, and a part of the connector housing 121 is located outside the pin.

Optionally, the socket housing 121 includes a first housing 1211 and a second housing 1212;

the first housing 1211 is connected to the mating portion 15 and the second housing 1212 is located outside the pin.

Optionally, the mating portion 15 and the patch portion 12 are injection molded.

Alternatively, the position sensor 1 and the engine head 2 or the valve chamber cover 3 are welded together.

In the present application, the terms "section", "end", and the like are used for descriptive purposes only and are not to be directly construed as having individual specific objects but merely as indicating relative positional descriptions.

The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A mounting structure of a position sensor, characterized by comprising a position sensor (1), and at least one of an engine head (2) and a valve chamber cover (3);

the position sensor (1) is mounted on the engine cylinder head (2) or the valve chamber cover (3);

the engine cylinder cover (2) or the valve chamber cover (3) is provided with a mounting sleeve (4), the lower end of the mounting sleeve (4) faces a signal wheel (5) of the engine, and the mounting sleeve (4) is formed by the engine cylinder cover (2) or the valve chamber cover (3);

the position sensor (1) comprises a supporting part (11), a plug part (12), a printed circuit board (13) and a Hall chip (14); wherein the content of the first and second substances,

the supporting part (11) is connected with the upper end of the mounting sleeve (4) in a sealing manner, and the first end of the supporting part (11) extends into the mounting sleeve (4);

the patch part (12) is connected with a second end of the supporting part (11), the patch part (12) is positioned outside the mounting sleeve (4), and the first end is opposite to the second end;

the printed circuit board (13) and the Hall chip (14) are connected with the supporting part (11), and the printed circuit board (13) and the Hall chip (14) are located inside the mounting sleeve (4).

2. The mounting arrangement, as set forth in claim 1, characterized in that the upper end of the mounting sleeve (4) is open, from which opening the first end of the support portion (11) protrudes into the interior of the mounting sleeve (4);

the lower end of the mounting sleeve (4) is sealed, and the lower end of the mounting sleeve (4) is connected with the Hall chip (14).

3. The mounting structure according to claim 1, wherein the lower end in the mounting sleeve (4) is provided with a positioning part (41), and the positioning part (41) is matched with the shape of the Hall chip (14) to limit the Hall chip (14).

4. The mounting structure according to claim 1, wherein the position sensor (1) further comprises an engaging portion (15);

the matching part (15) is connected with the supporting part (11);

the upper end of the mounting sleeve (4) is at least partially inserted into the lower end of the fitting portion (15).

5. The mounting structure according to claim 4, wherein the mounting sleeve (4) has a snap (42) on the outer side of the upper end thereof, the engaging portion (15) has a snap groove (16), and the snap (42) and the snap groove (16) are engaged.

6. The mounting structure according to claim 4, wherein the patch part (12) comprises a pin and a patch housing (121);

the contact pin is connected with the supporting part (11) and the printed circuit board (13);

the plug-in housing (121) is connected with the upper end of the matching part (15), and a part of the plug-in housing (121) is positioned outside the plug pin.

7. The mounting structure according to claim 6, wherein the plug-in housing (121) includes a first housing (1211) and a second housing (1212);

the first housing (1211) is connected to the mating portion (15), and the second housing (1212) is located outside the pin.

8. The mounting structure according to claim 4, wherein the mating portion (15) and the patch portion (12) are injection molded.

9. The mounting structure according to claim 1, characterized in that a welded connection is provided between the position sensor (1) and the engine head (2) or the valve chamber cover (3).

10. A vehicle characterized by having a mounting structure of a position sensor according to any one of claims 1 to 9.