Sealing structure of miniature non-contact throttle position sensor

Abstract

The utility model discloses a sealing structure of a miniature non-contact throttle position sensor, which comprises a shell and a sealing cover, an opening is arranged above the shell, a gear ring is convexly arranged on the inner side of the shell below the opening, the sealing cover is hermetically mounted in the opening of the shell, a movable gear is rotatably mounted on the inner side of the sealing cover through a movable bearing, and the movable gear is meshed with the movable bearing. A mounting base is arranged below the movable gear, the movable gear and the mounting base coaxially rotate, a plurality of sets of rectangular movable grooves are formed in the bottom of the mounting base in an annular array mode, a movable ejector block is movably arranged in each set of rectangular movable grooves in the radius direction, and a limiting base is fixedly arranged at the position, below the mounting base, of the inner side of the sealing cover; limiting grooves are formed in the limiting base and correspond to the movable ejector blocks in an annular array mode, the inner ends of the movable ejector blocks move in the limiting grooves in a limited mode, and the gear ring is in meshing transmission with the movable gear. The utility model has the advantages that the miniature non-contact throttle position sensor can be tightly connected and sealed, the service life is long, and the installation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to throttle sensor device technical field, especially a kind of sealing structure of micro non-contact throttle position sensor. BACKGROUND

[0002] Throttle is a controllable valve for controlling air into engine, gas enters intake pipe and mixes with gasoline into combustible mixture, thereby burning and doing work.Throttle is connected with air cleaner and intake pipe, and engine cylinder, and is also commonly called as the throat of automobile engine.Throttle works mainly by throttle position sensor and ETC communication, feeds back the working state of throttle to ETC, i.e.the intention of driver, throttle position sensor inputs electric signal to ETC, so that ECU calculates the amount of fuel injection, reaches the best emission requirement, vehicle performance.Throttle position sensor is a component in engine management system, which is installed on throttle body to detect throttle opening information and feed back to ECU, and throttle position sensor provides analog voltage signal output proportional to input angle and voltage.

[0003] The existing throttle position sensor generally adopts contact sensor, uses sliding rheostat to generate output signal by sliding on resistance strip on ceramic substrate by brush, and due to the friction between brush and ceramic substrate, brush and resistance strip can be worn out after long-term friction, so that the sensor is invalid.Therefore, non-contact throttle position sensor using Hall chip gradually appears in the market, which eliminates mechanical wear and tear.The traditional non-contact throttle position sensor using Hall chip leaves gap between rotor and sensor housing, and sealing ring needs to be arranged between rotor and sensor housing to seal the gap, however, engine is always in vibration state, and throttle position sensor sealing element can be misaligned for years, which causes sealing failure, and once disengaged, it can seriously affect the operation of sensor. UTILITARY MODEL CONTENT

[0004] The utility model aims at providing a kind of sealing structure of micro non-contact throttle position sensor, which can realize the close connection and sealing of micro non-contact throttle position sensor, has long service life and is more convenient to install.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A sealing structure of a miniature non-contact throttle position sensor, characterized by comprising a shell and a sealing cover, an opening is arranged above the shell, a gear ring is arranged in a protruding manner inside the shell below the opening, the sealing cover is sealingly arranged in the opening of the shell, a movable gear is rotatably arranged inside the sealing cover through a movable bearing, an installation seat is arranged below the movable gear, the movable gear and the installation seat are coaxially rotatable, a plurality of groups of rectangular movable grooves are arranged in an annular array at the bottom of the installation seat, a movable top block is movably arranged in the radial direction in each group of rectangular movable grooves, a limiting seat is fixedly arranged below the installation seat inside the sealing cover, a limiting groove is arranged in an annular array in the limiting seat corresponding to each group of movable top blocks, the inner end of the movable top block is limitedly movable in the limiting groove, the gear ring and the movable gear are in meshing transmission, and the movable top block extends outward to abut against the gear ring in a limiting manner.

[0007] Preferably, a containing groove is arranged in the outer circle of the movable gear inside the sealing cover, a sealing ring is sleeved in the containing groove, and the sealing cover is sealed with the inner opening of the shell and the step of the gear ring through the sealing ring.

[0008] Preferably, the width of the gear slot inside the gear ring is greater than the thickness of the corresponding meshing movable gear.

[0009] Preferably, the limiting groove is in an arc structure, and the distances from the two ends of the limiting groove to the center of the annular array are different.

[0010] Preferably, a cylindrical slider is arranged inside each group of movable top blocks, and the cylindrical slider of each group of movable top blocks is limitingly and slidingly arranged in the corresponding limiting groove.

[0011] Preferably, the bottom of the sealing cover is fixedly connected to the upper side of the limiting seat through a connecting column, and a lightened slot is arranged between the limiting groove and the connecting column on the limiting seat.

[0012] Preferably, two groups of positioning slots are symmetrically arranged at the upper and lower ends of the shell.

[0013] Preferably, a first threaded hole is horizontally arranged above the gear ring inside the shell, a second threaded hole is arranged on the outer edge of the sealing cover corresponding to the first threaded hole, and the shell and the sealing cover are fixedly arranged through the bolt connection of the first threaded hole and the second threaded hole.

[0014] In conclusion, the utility model has the following beneficial effects: the utility model discloses a sealing cover is inserted into the opening of the shell, and the sealing cover is rotated, and the movable gear is driven to move by the gear ring, so that the movable top block in the mounting seat is radially unfolded under the limiting of the limiting seat, thereby abutting and clamping the lower part of the gear ring, realizing the axial self-limiting structure, and the sealing ring structure can isolate water, oil stains or impurities such as mud, and is convenient to install and simple in structure, and the sealing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the shell structure schematic diagram of the utility model;

[0016] Fig. 2 It is the upper structure schematic diagram of the sealing cover of the utility model;

[0017] Fig. 3 It is the connecting structure schematic diagram of the shell and the sealing cover of the utility model;

[0018] Fig. 4 It is the lower structure schematic diagram of the sealing cover of the utility model. DETAILED DESCRIPTION

[0019] The specific embodiment of the utility model is further explained in combination with the drawings, and the embodiment does not constitute the limitation of the utility model.

[0020] As Figs. 1 to 4 The utility model discloses a sealing structure of a micro non-contact throttle position sensor, which comprises a shell 1 and a sealing cover 2, the shell 1 is provided with an opening at the top, a gear ring 3 is protrudedly arranged on the inner side of the shell 1 below the opening, the sealing cover 2 is sealingly arranged in the opening of the shell 1, an movable gear 5 is rotatably arranged on the inner side of the sealing cover 2 through a movable bearing 4, an mounting seat 6 is arranged below the movable gear 5, the movable gear 5 and the mounting seat 6 are coaxially rotatable, a plurality of groups of rectangular movable grooves 7 are annularly and arrayed on the bottom of the mounting seat 6, movable top blocks 8 are movably arranged in the radial direction in each group of the rectangular movable grooves 7, a limiting seat 9 is fixedly arranged on the inner side of the sealing cover 2 below the mounting seat 6, a limiting groove 10 is annularly and arrayed in the limiting seat 9 corresponding to each group of the movable top blocks 8, the inner end of the movable top block 8 is movably arranged in the limiting groove 10, the gear ring 3 and the movable gear 5 are in meshing transmission, and the movable top block 8 extends outward and abuts against the lower part of the gear ring 3.

[0021] A containing groove 11 is formed in the outer ring of the movable gear 5 on the inner side of the sealing cover 2, a sealing ring 12 is sleeved in the containing groove 11, and the sealing cover 2 is sealed with the inner opening of the shell 1 and the step of the gear ring 3 through the sealing ring 12.

[0022] The width of the gear slot on the inner side of the gear ring 3 is greater than the thickness of the gear tooth of the corresponding meshing movable gear 5, so that the corresponding installation of the gear ring 3 and the movable gear 5 is facilitated.

[0023] The limiting groove 10 is arc-shaped, and the distance from the two ends of the limiting groove 10 to the center of the annular array is different.

[0024] The inside of each set of movable top blocks 8 is provided with a cylindrical slider 13, and the cylindrical slider 13 of each set of movable top blocks 8 is limited to slide in the corresponding limiting groove 10.

[0025] The bottom center of the sealing cover 2 is fixedly connected with the upper part of the limiting seat 9 through a connecting column 14, and the limiting seat 9 is provided with a lightened groove 15 between the limiting groove 10 and the connecting column 14, so that the lightening is realized without affecting the overall structural strength.

[0026] The upper and lower ends of the shell 1 are symmetrically provided with two sets of positioning grooves 16, so that the shell 1 can be fixedly installed with the outside.

[0027] The first screw hole 17 is horizontally arranged in the shell 1 and is located above the gear ring 3, the second screw hole 18 is arranged on the outer edge of the sealing cover 2 and corresponds to the first screw hole 17, and the shell 1 and the sealing cover 2 are fixedly installed through the bolt connection of the first screw hole 17 and the second screw hole 18, so that the shell 1 and the sealing cover 2 can be positioned and fixed through the bolt, and relative displacement between the two is avoided, so that the sealing structure loses the function.

[0028] The sealing cover is aligned and inserted into the opening of the shell, the sealing cover is rotated, the movable gear is driven to move by the gear ring, so that the movable top block in the mounting seat is radially expanded under the limitation of the limiting seat, and is abutted and clamped on the lower part of the gear ring, so that the axial self-limiting structure is realized, the sealing ring structure can isolate water, oil stains or mud and other impurities, and subsequent bolt limiting and fixing are convenient to install, and the structure is simple, and the sealing effect is better.

[0029] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and those skilled in the art can make various modifications or equivalent replacements to the utility model within the utility model's essence and protection scope, and the modification or equivalent replacement should also be regarded as falling within the protection scope of the utility model technical scheme.

Claims

1. A sealed structure of a micro non-contact throttle position sensor, characterized by, Including the shell and the sealing cover, the shell is provided with an opening on the top, a gear ring is provided on the inside of the shell below the opening, the sealing cover is sealingly installed in the opening of the shell, a movable gear is rotatably installed in the inside of the sealing cover through a movable bearing, an installation seat is provided below the movable gear, the movable gear and the installation seat rotate coaxially, the bottom of the installation seat is annularly arranged with a plurality of groups of rectangular movable grooves, a movable top block is movably arranged in each group of rectangular movable grooves along the radial direction, a limiting seat is fixedly arranged below the installation seat in the inside of the sealing cover, a limiting groove is arranged in the limiting seat corresponding to each group of movable top blocks in an annular array, the inner end of the movable top block is limitedly movable in the limiting groove, the gear ring and the movable gear are in meshing transmission, and the movable top block extends outward to abut against the gear ring.

2. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: A containing groove is arranged in the outside of the movable gear in the inside of the sealing cover, a sealing ring is sleeved in the containing groove, and the sealing cover is sealed with the inner opening of the shell and the step of the gear ring through the sealing ring.

3. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: The width of the gear groove in the inside of the gear ring is greater than the thickness of the gear tooth of the corresponding meshing movable gear.

4. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: The limiting groove is in an arc structure, and the distance from the two ends of the limiting groove to the center of the annular array is different.

5. The sealed structure of a micro non-contact throttle position sensor according to claim 4, wherein: A cylindrical slider is arranged in the inside of each group of movable top blocks, and the cylindrical slider of each group of movable top blocks is limitingly and slidingly arranged in the corresponding limiting groove.

6. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: The bottom of the sealing cover is fixedly connected with the top of the limiting seat through a connecting column, and a lightened slot is arranged between the limiting groove and the connecting column on the limiting seat.

7. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: Two groups of positioning slots are symmetrically arranged on the top and bottom of the shell.

8. The sealed structure of a micro non-contact throttle position sensor according to claim 1, wherein: A first threaded hole is horizontally arranged on the inside of the shell above the gear ring, a second threaded hole is arranged on the outer edge of the sealing cover corresponding to the first threaded hole, and the shell and the sealing cover are fixedly installed through the bolt connection of the first threaded hole and the second threaded hole.

Images