CN201396217Y

CN201396217Y - Precisely-positioned non-contact car electronic-throttle angle sensor

Info

Publication number: CN201396217Y
Application number: CN2008202063147U
Authority: CN
Inventors: 黄荟; 伍国伟
Original assignee: Zhaoqing Sinkon Electronics Co Ltd
Current assignee: Zhaoqing Sinkon Electronics Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2010-02-03
Anticipated expiration: 2018-12-29

Abstract

The utility model relates to a precisely-positioned non-contact car electronic-throttle angle sensor, and in particular to a car electronic-throttle angle sensor which is provided with a positioning chuck ring and a transverse bolt inside a traditional magnetic-sensing non-contact angle sensor, which comprises a sensor main body, a rotating shaft, a positioning chuck ring, a magnet, a transverse bolt, an epoxide resin, a spring, a circuit board and a sensitive unit which is adhered on the surface of the circuit board, and adopts the basic principle that: when a car accelerator pedal drives themagnet to make a non-contact rotation above the sensitive unit, the lines of magnetic force are cut by magnetic-sensing elements inside the sensitive unit, so that the varied voltage signal can be sensed, and the varied voltage signal is processed by a microprocessor and a digital signal processing circuit, which are previously integrated inside the sensitive unit to output a linear voltage signal. The linear voltage signal is used for changing the work situation of a car engine. The interior arrangement of the angle sensor greatly improves the precision and the reliability of the magnetic-sensing non-contact angle sensor and prolongs the service life.

Description

A kind of pinpoint non-contact electronic throttle angle sensor for automobile

(1) technical field

The present invention relates to a kind of pinpoint non-contact electronic throttle angle sensor for automobile, specifically relate to be provided with the automobile electric gasoline throttle angle sensor that location pressure ring, horizontal latch have been installed in traditional magnetosensitive non-contact angle sensor inside.

(2) background technique

As everyone knows, during automobile was advanced, traditional engine control was by drag-line (stone dead wire) or pull bar, and an end connects throttle and quickens foot treadle, the other end joint valve interlock plate and working.But this traditional throttle application category is restricted and lacks accuracy, and under the automotive electronic technology development situation that makes rapid progress, E-Gas arises at the historic moment.After having used its motor of automobile of E-Gas to start, originally accelerator pedal is in full relaxation state, when the driver begins a little firmly to trample efp, drive the rotating shaft rotation of E-Gas angle transducer and make angle transducer rotate slight angle stroke forward, according to the output characteristics of angle transducer, it can change output voltage.This altered voltage then also can change the working condition of motor car engine.Along with the continuous change of accelerator pedal angle stroke, output voltage also constantly changed during automobile was advanced, thereby the result is the continuous requirement that changes adaptation driving and driving of working condition of motor car engine.

The E-Gas control system mainly is made up of gas pedal, potentiometer, ECU (electronic control unit), data/address bus, servomotor and throttle execution mechanism.In early days, the potentiometer here is to adopt the swept resistance formula, it has many shortcomings, because it has point of contact, the electrical spark that have (rotational life: about 3,000,000 times) easy to wear, poor reliability, produces once in a while can disturb working state many shortcomings such as (thereby burying potential safety hazard) of ECU.Therefore, external in recent years numerous and confused research and development and popularization

The magnetosensitive non-contact angle sensor.The magnetosensitive non-contact angle sensor is that magneto sensitive element is put

In the magnetic field, it exports voltages having different magnitude because of the difference along with rotation angle, and it is contactless, and can not wear and tear does not have noise yet, is fit to the application of automotive electronicsization with the industrial control of various requirement strictness.

(3) summary of the invention

The invention provides a kind of automobile electric gasoline throttle angle sensor that rotating shaft, location pressure ring, circuit board have been installed that is provided with in common magnetosensitive non-contact angle sensor inside, comprise magneto sensitive element eight parts that mount on sensor body, rotating shaft, location pressure ring, magnet, horizontal latch, epoxy resin, spring, circuit board and the PCB surface thereof; Described sensor body adopts plastics, metal, composite material to manufacture, and sensor body is used to hold the installation of rotating shaft, location pressure ring, circuit board; Described rotating shaft is whole to be to adopt plastics, metal, composite material to manufacture by disunity standard (or claiming irregular) cylindrical body, is made up of main body, vertical slot, spacing protruding section, hole, the groove of turn rotating shaft, inner spindle, external surrounding frame; Described main body comprises main body and following main body; The described inner chamber of going up main body has inner spindle, and inner spindle is used to hold the assembling and the cast of magnet, horizontal latch, epoxy resin; Hold the installation of spring between described upward main body and the inner core; Described going up on main body and the inner spindle has onesize hole, and the hole is used to insert horizontal latch; Magnet is installed at the bottom of the described inner spindle inner chamber, and horizontal latch penetrates and magnet is pressed in the below behind the hole on the inner spindle magnet is fixed, and casting epoxy resin makes magnet obtain double fixed again on magnet and horizontal latch; The ectosome of last main body bears being inserted in of location pressure ring; Have 1 vertical slot on the last main body and be used for an end of retaining spring; There are spacing protruding section of one section semicircle convex, the spacing protruding section the other end that is used for retaining spring in the jointing place of last main body and following main body; The inner chamber of following main body is the groove of turn rotating shaft, and the groove of turn rotating shaft is in-line groove or cross bath, and the ectosome of following main body bears being inserted in of cushion rubber; Described main body and spacing protruding section and rotating shaft and inner spindle and external surrounding frame are as a whole; Described rotating shaft is made with mould injection moulding or cast, perhaps adopt mill after the welding, machined into makes; Described location pressure ring adopts plastics, metal, composite material to manufacture, form by circle main frame, cylindrical body pin, earrings, groove, described round main frame, cylindrical body pin, earrings are as a whole, and described groove is opened an end that is used for retaining spring in the middle and lower part of main frame; Described magnet is permanent magnet; Described horizontal latch adopts plastics, metal, composite material to manufacture; Described epoxy resin is prior art products; Described spring is a metal spring; Described cushion rubber is that rubber or composite are manufactured; The magneto sensitive element that mounts on described circuit board and the surface thereof is prior art products.

Basic functional principle: application of the present invention is the magnetosensitive non-contact angle sensor.Its basic principle is: when gas foot treadle driven rotary magnet non-contact type above sensing unit rotates, the magnetic line of force is sensed the voltage signal of variation by the magneto sensitive element in sensing unit cutting, through just exporting linear voltage after the processing that is integrated in microprocessor in the sensing unit and digital signal processing circuit in advance.This linear voltage is used to change the working condition of motor car engine.

The object of the present invention is achieved like this

The first, horizontal latch of the present invention is penetrated hole on the inner spindle, it is pressed in the below with magnet fixes magnet, again on magnet and horizontal latch casting epoxy resin that magnet is obtained is fixing; Its effect is that the location accurately even two aspects are avoided aging and the jolting of automobile running of permanent epoxy resin of time and caused coming off of magnet, has been improved the reliability of magnetosensitive non-contact angle sensor widely and prolonged its working life on the one hand.Three aspects are that the existence of horizontal latch makes the thickness that is easy to check institute's casting epoxy resin in the production process.Second, location of the present invention pressure ring is embedded on the last main body of rotating shaft, make an end that is assemblied in the spring in the rotating shaft be fixed in the groove of pressure ring bottom, location and stretch out outside the pressure ring of location, the rotating shaft sensor body inner chamber of the present invention of packing into, two earrings on the pressure ring of location are fixed on the relevant position of sensor body inner chamber of the present invention, crucial part is: locate cylindrical top on the pressure ring this moment and be the external surrounding frame on spacing protruding section of semicircle convex of the jointing place that just in time is pressed in main body and following main body, because the relevant position that circuit board is installed in sensor body inner chamber of the present invention is in pressure ring top, location and is close to mutually, thereby the location pressure ring plays to make between rotating shaft and the circuit board and forms accurate distance, thereby the mutual edge distance mutually that makes the magneto sensitive element surface on magnet surface and the circuit board in the rotating shaft is just by accurate localization, when the angle of E-Gas foot treadle changes when rotating shaft is changed, distance between above-mentioned two surfaces also can remain unchanged, it only is the output voltage variation that changes and just can make sensor by angle, thereby cause that oil supplies to change, thereby reach the purpose that Control of Automobile is travelled when oil makes the motor car engine work efficiency change for changing.

(4) description of drawings

Fig. 1 is the floor map of sensor body of the present invention;

Fig. 2 is the schematic perspective view of rotating shaft of the present invention;

Fig. 3 is location pressure ring embodiment's 1 an of the present invention schematic perspective view;

Fig. 4 is the schematic perspective view of spring of the present invention;

Fig. 5 is the schematic perspective view after location pressure ring embodiment 1 of the present invention makes up with rotating shaft;

Fig. 6 locatees pressure ring embodiment 2 schematic perspective view for the present invention;

Fig. 7 locatees pressure ring embodiment 3 schematic perspective view for the present invention;

Fig. 8 locatees pressure ring embodiment 4 schematic perspective view for the present invention.

(5) embodiment

In conjunction with Fig. 1, Fig. 1 is the floor map of the shared sensor body of all embodiments of the present invention, and 1 is sensor body among the figure, 1 ' and 1 " be used for fixing location pressure ring and circuit board for screw; 1a is the recess of main body in the device rotating shaft, 1b allows the circular hole that main body is stretched out under the rotating shaft.

In conjunction with Fig. 2, Fig. 2 is the schematic perspective view of the shared rotating shaft of all embodiments of the present invention, among the figure: the A indication is rotating shaft, 3 for the last main body of rotating shaft A, 3a is the vertical slot on the last main body 3 of rotating shaft A, vertical slot 3a is used for an end 7b of retaining spring 7,3b is spacing protruding section on the last main body 3 of rotating shaft A, the other end 7a that is used for retaining spring 7,3c is the inner spindle of rotating shaft A, 3d is the last main body 3 of rotating shaft A and the space between the inner spindle 3c, be used to settle spring 7,3e is the external surrounding frame of rotating shaft A, external surrounding frame 3 is used to bear the pin 2a of

location pressure ring

2,3f is the hole on the last main body 3 of rotating shaft A, 3f ' and 3f " be the hole on the inner spindle of rotating shaft A; 3f and 3f ' and 3f " for the hole of identical size and all be on the same medial axis, 3f and 3f ' and 3f " be used to allow horizontal latch 5 penetrate; and 3h is the following main body of rotating shaft A; 4 is magnet; 5 is horizontal latch; be used for compression set magnet 4; 6 is epoxy resin, is cast on magnet 4 and the horizontal latch 5.

Embodiment 1, in conjunction with Fig. 3, among the figure: 2 are the location pressure ring, 2 ' and 2 " be earrings; earrings 2 ' and 2 " with the location pressure ring 2 be one, earrings 2 ' and 2 " be in and locate leaning to one side of pressure ring 2; earrings 2 ' and 2 " be used for fixing and locate

pressure ring

2,2a is a pin, pin 2a is an one with location pressure ring 2, pin 2a is in the bottom surface of location pressure ring 2, pin 2a is used for precisely location, location pressure ring 2, and pin 2a is cylindrical or the column of square column type or triangle cylindricality, and pin 2a bottom surface pin is plane or sphere or conical surface, B is a groove, groove B is in pressure ring 2 bottom surfaces, location, and groove B is used to limit an end 7a of spring 7.

In conjunction with Fig. 4, among the figure: 7 is the two ends that spring, 7a and 7b are respectively spring 7.

Embodiment 1, in conjunction with Fig. 5, Fig. 5 mainly shows the stereoscopic-state when location pressure ring 2 retaining rings are on rotating shaft A, among the figure: 2 for location pressure ring, 3 for the last main body of rotating shaft A, 3a are that vertical slot, 3b on the last main body 3 of rotating shaft A is that inner spindle, 3e on the rotating shaft A is that the external surrounding frame of rotating shaft A, the following main body, 7 that 3h is rotating shaft A are that spring, 7a are that an end of spring 7, the other end, the B that 7b is spring 7 are in the groove of locating pressure ring 2 bottom surfaces, remaining and Fig. 2 are identical among Fig. 5.

Embodiment 2, in conjunction with Fig. 6, among the figure: 2 for location pressure ring, 2a are pin, and embodiment 1 is with 2 differences of embodiment: the pin 2a among the embodiment 1 on the pressure ring 2 of location is cylindrical or the column of square column type or triangle cylindricality and pin 2a on the location pressure ring 2 among the embodiment 2 is a chain of formula flat shape of a wave pin.

Embodiment 3, in conjunction with Fig. 7, among the figure: 2 is that location pressure ring, 2a are pin, embodiment 1 and embodiment 2 is with 3 differences of embodiment: the pin 2a among the embodiment 1 on the pressure ring 2 of location is cylindrical or the column of square column type or triangle cylindricality, the pin 2a on the location pressure ring 2 among the embodiment 2 are a chain of formula flat shape of wave pin, and the pin 2a on the location pressure ring 2 among the embodiment 3 is a chain of formula arc bottom of a wave pin.

Embodiment 4, in conjunction with Fig. 8, among the figure: 2 is that location pressure ring, 2a are the bottom surfaces of location pressure ring 2, embodiment 1 and embodiment 2 and embodiment 3 is with 4 differences of embodiment: the pin 2a among the embodiment 1 on the pressure ring 2 of location is cylindrical or the column of square column type or triangle cylindricality, the pin 2a on the location pressure ring 2 among the embodiment 2 are a chain of formula flat shape of wave pin, pin 2a on the location pressure ring 2 among the embodiment 3 is a chain of formula arc bottom of a wave pin, and the pin 2a on the location pressure ring 2 among the embodiment 4 forms the planar base surface cylindrical integral with location pressure ring 2.

Claims

1, a kind of pinpoint non-contact electronic throttle angle sensor for automobile specifically relates to inner setting of traditional magnetosensitive non-contact angle sensor the location pressure ring that is enclosed within the rotating shaft, the automobile electric gasoline throttle angle sensor that is inserted in the horizontal latch in the rotating shaft are installed; Comprise magneto sensitive element eight parts that mount on sensor body, rotating shaft, location pressure ring, magnet, horizontal latch, epoxy resin, spring, circuit board and the PCB surface thereof; It is characterized in that: described sensor body adopts plastics or metal to manufacture, and sensor body is used to hold the installation of rotating shaft, location pressure ring, circuit board; Described rotating shaft integral body is for the disunity standard or claim irregular cylindrical body, adopt plastics or metal to manufacture, form by main body, vertical slot, spacing protruding section, hole, the groove of turn rotating shaft, inner spindle, external surrounding frame, the inner chamber of rotating shaft has inner spindle, onesize hole is arranged on the inner spindle, and the hole is used to insert horizontal latch; Described main body comprises main body and following main body; The described inner chamber of going up main body has inner spindle, and inner spindle is used to hold the assembling and the cast of magnet, horizontal latch, epoxy resin, holds the installation of spring between last main body and the inner spindle, and onesize hole is arranged on last main body and the inner spindle, and the hole is used to insert horizontal latch; Magnet is installed at the bottom of the described inner spindle inner chamber, and horizontal latch penetrates and magnet is pressed in the below behind the hole on the inner spindle magnet is fixed, and casting epoxy resin makes magnet obtain double fixed again on magnet and horizontal latch; The ectosome of last main body bears being inserted in of location pressure ring; Have 1 vertical slot on the last main body and be used for an end of retaining spring; There are spacing protruding section of one section semicircle convex, the spacing protruding section the other end that is used for retaining spring in the jointing place of last main body and following main body; The inner chamber of following main body is the groove of turn rotating shaft, and the groove of turn rotating shaft is in-line groove or cross bath, and the ectosome of following main body bears being inserted in of cushion rubber; Described main body and spacing protruding section and rotating shaft and inner spindle and external surrounding frame are as a whole; Described rotating shaft is made with mould injection moulding or cast, perhaps adopt mill after the welding, machined into makes; Described location pressure ring adopts plastics or metal to manufacture, and is made up of circle main frame, cylindrical body pin, earrings, groove, and described groove is opened an end that is used for retaining spring in the middle and lower part of main frame; Described magnet is permanent magnet; Described horizontal latch adopts plastics or metal to manufacture; Described spring is a metal spring; Described cushion rubber is that rubber or composite are manufactured; Mount magneto sensitive element on the described PCB surface.

2, sensor according to claim 1 is it is characterized in that: described round main frame, cylindrical body pin, earrings are as a whole; Two earrings by screw on the relevant position of sensor body inner chamber.

3, sensor according to claim 2 is characterized in that: a chain of formula flat shape of described cylindrical body pin or wave pin, or a chain of formula arc bottom of wave pin, or form the planar base surface cylindrical integral with the location pressure ring.

4, sensor according to claim 1, it is characterized in that: when described location pressure ring is inserted in the rotating shaft in the sensor body, a chain of formula flat shape pin of its cylindrical body pin or wave or a chain of formula arc bottom pin of wave or to form the columniform top of planar base surface with the location pressure ring be just in time to be pressed on the external surrounding frame of jointing place of the last main body of rotating shaft and following main body.

5, sensor according to claim 1 is characterized in that: a surface of described location pressure ring is provided with groove; The effect of groove be to make the spring that is contained in the rotating shaft wherein an end ensconce in the described groove and stretch out outside the pressure ring of location, ensconce in the described groove this end and produce and freely swing thereby play the effect of guide rail and restraining spring.