CN201162574Y

CN201162574Y - Plastic air throttle of motor vehicle electric spraying fuel oil system

Info

Publication number: CN201162574Y
Application number: CNU200820097790XU
Authority: CN
Inventors: 杨大明; 张建和
Original assignee: CHONGQING YUHUI MACHINERY CO LTD
Current assignee: CHONGQING YUHUI MACHINERY CO LTD
Priority date: 2008-03-11
Filing date: 2008-03-11
Publication date: 2008-12-10
Anticipated expiration: 2018-03-11

Abstract

The utility model discloses a plastic air throttle of a motor vehicle electric fuel system. The plastic air throttle comprises an air throttle body made from plastic, an air throttle shaft, a rotating frame, a tension spring, a position sensor, a travel cable bracket and a step motor. A metal bush fitting is embedded in the main passage of the air throttle body. The air throttle shaft passes through two through holes at the diameter of the metal bush fitting and is matched with the through holes in a slide way. The air throttle shaft is connected with an air throttle disk which is arranged in the middle hole of the main passage formed by the metal bush fitting. The plastic air throttle of the motor vehicle electric fuel system of the utility model has the beneficial effects that under the state that the whole vehicle works, after the air throttle body heats, key components have less heat expansion, small size change and high reliability; the air throttle shaft and the metal bush fitting at the plastic air throttle body are matched in a slide way, so the wearable performance is good, and the service life of the air throttle is long.

Description

A kind of plastics closure of Motor Vehicle EFI oil-fired system

Technical field

The utility model relates to a kind of closure of Motor Vehicle EFI oil-fired system, particularly a kind of plastics closure of Motor Vehicle EFI oil-fired system.

Background technique

Closure is the critical component of control engine air air inflow in the Motor Vehicle EFI fuel oil, the throttle body of existing Motor Vehicle EFI oil-fired system generally all be to make of metallic material, but metallic material proportion is bigger, closure weight is heavier, closure fabricating cost height.Therefore, occurred the plastics closure at present, plastics closure proportion is less, price is lower, but the plastics closure is under the car load working state, and throttle body heating back is because thermal expansion, cause the throttle body dimensional changes bigger, precision reduces, thereby influences the car load service behaviour.

Summary of the invention

The purpose of this utility model is exactly at the deficiencies in the prior art, provides a kind of and makes with the mode of place, stepper motor hole engaged column edge cover on the main passage of throttle body.Described closure throttle body key position main passage and stepper motor hole size variation under the car load working state is little, the reliability height, and its service behaviour is identical with ready-made metal closure ripe, traditional type, meets the requirement of EFI oil-fired system fully.Described closure has solved in the work of traditional type plastics closure because of thermal expansion causes dimensional changes bigger, and precision reduces, and influences the problem of vehicle performance, is that a kind of cost is low, reliability is high, the plastics closure of the Motor Vehicle EFI oil-fired system of long service life.

For achieving the above object, the utility model adopts following technological scheme:

A kind of plastics closure of Motor Vehicle EFI oil-fired system, comprise the tb, throttle plate pin, closure video disc, swing frame, torsion spring, drag-line support, pipe joint, position transducer, the stepper motor that are made of plastics, be embedded with the main passage edge cover of being made by metallic material on the main passage of described tb, two through holes that throttle plate pin passes on the edge cover diameter of main passage cooperate with via clearance; Be connected with the closure video disc on the throttle plate pin, the closure video disc is arranged in the mesopore that main passage edge cover forms the main passage.

After adopting technique scheme, because the main passage of the tb that is made of plastics and place, stepper motor hole are embedded with metal edge cover, closure is under the car load working state, throttle body heating back key position thermal expansion is little, the reliability height, its service behaviour matches in excellence or beauty the closure long service life with metal closure ripe, existing traditional type.The plastics closure all adopts engineering plastics generally speaking.

Preferably, described main passage is inlayed to overlap and is made by aluminium.Aluminium is light, easily processing.

Preferably, described main passage is inlayed the outer rim of overlapping and is provided with stop ledge.Stop ledge can prevent that the metal edge is enclosed within the rotation of skidding on the tb.

Further preferred, described stop ledge 92 is a tetragonous cone table shape, and the small end of tetragonous cone table combines with the outer rim of main passage edge cover 9.

Preferably, the stepper motor mounting hole place of described tb is embedded with the assembly head edge cover of being made by metallic material, forms the gap between the assembly head of stepper motor and the assembly head edge cover during closure idling work.

Further preferred, described assemblys head edge overlaps 11 and is made by aluminium.

Further preferred, described outer rim of piecing together head edge cover is provided with the stop breach.

Preferably, described drag-line support and pipe joint and body are even for to be made by plastic materials, and drag-line support and pipe joint and body form an integral body.Drag-line support and pipe joint and body are even to be made by plastic materials, and the processing economical with materials reduces cost, and reduces assembly process, and does not influence the quality of plastics plastics closure.

Preferably, the connection part of described body and other component is provided with thread Pilot hole, is used for connecting with being connected with tapping screw of other component.Extract the screw bottom outlet out when molding and forming, adopt tapping screw to connect, guaranteed the product space precision with mould, body adopts engineering plastics to make and has not only guaranteed join strength but also reduced processing cost.

The beneficial effect of the plastics closure of a kind of Motor Vehicle EFI of the utility model oil-fired system is, closure is under the car load working state, throttle body heating back key position thermal expansion is little, dimensional changes is little, the reliability height, its stable work in work, identical with the metal closure of traditional type maturation, existing, cost of material and processing cost are low, the closure long service life.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is an A-A sectional view among Fig. 1

Fig. 3 is a B-B sectional view among Fig. 1

Fig. 4 is the perspective view of the utility model main passage edge cover

Fig. 5 is the plan structure schematic representation of the utility model main passage edge cover

Fig. 6 is the structural representation that the utility model is pieced together head edge cover

Fig. 7 is the perspective view that the utility model is pieced together head edge cover

Fig. 8 is a perspective view of the present utility model

Fig. 9 is the perspective view after being linked and packed with tapping screw of the present utility model

Embodiment

Below in conjunction with accompanying drawing the utility model is further described, as Fig. 1, Fig. 2, shown in Figure 3:

A kind of plastics closure of Motor Vehicle EFI oil-fired system, comprise the tb 1, throttle plate pin 2, closure video disc 3, swing frame 4, torsion spring 5, drag-line support 6, pipe joint 7, position transducer 8, the stepper motor 10 that are made of plastics, be embedded with the main passage edge cover of being made by metallic material 9 on the main passage of described tb 1, throttle plate pin 2 passes two through holes 91 and through hole 91 Spielpassung on edge cover 9 diameters of main passage; Be connected with closure video disc 3 on the throttle plate pin 2, closure video disc 3 is arranged in the mesopore that main passage edge cover 9 forms the main passage.

Described main passage edge cover 9 is made by aluminium.

The outer rim of described main passage edge cover 9 is provided with stop ledge 92.

Described stop ledge 92 is a tetragonous cone table shape, and the small end of tetragonous cone table combines with the outer rim of main passage edge cover 9.

The stepper motor 10 mounting hole places of described tb 1 are embedded with the assembly head edge cover of being made by metallic material 11, during the closure idling work assembly of stepper motor 10 101 with piece together the head edge and form the gap between overlapping 11.

Described assembly head edge cover 11 is made by aluminium.

Described outer rim of piecing together head edge cover 11 is provided with stop breach 111.

Described drag-line support 6 and pipe joint 7 are even for to be made by plastic materials with body 1, and drag-line support 6 and pipe joint 7 form an integral body with body 1.

Described body 1 is provided with thread Pilot hole 12 with the connection part of other component, is used for connecting with being connected with tapping screw 13 of other component.

Claims

1, a kind of plastics closure of Motor Vehicle EFI oil-fired system, comprise the tb (1), throttle plate pin (2), closure video disc (3), swing frame (4), torsion spring (5), drag-line support (6), pipe joint (7), position transducer (8), the stepper motor (10) that are made of plastics, it is characterized in that: be embedded with the main passage edge cover of being made by metallic material (9) on the main passage of described tb (1), throttle plate pin (2) passes two through holes (91) and through hole (91) Spielpassung on edge cover (9) diameter of main passage; Be connected with closure video disc (3) on the throttle plate pin (2), closure video disc (3) is arranged in the mesopore that main passage edge cover (9) forms the main passage.

2, according to the plastics closure of the described Motor Vehicle EFI of claim 1 oil-fired system, it is characterized in that: described main passage edge cover (9) is made by aluminium.

3, according to the plastics closure of the described Motor Vehicle EFI of claim 1 oil-fired system, it is characterized in that: the outer rim of described main passage edge cover (9) is provided with stop ledge (92).

4, according to the plastics closure of the described Motor Vehicle EFI of claim 3 oil-fired system, it is characterized in that: described stop ledge (92) is tetragonous cone table shape, and the small end of tetragonous cone table combines with the outer rim of main passage edge cover (9).

5, according to the plastics closure of the described Motor Vehicle EFI of claim 1 oil-fired system, it is characterized in that: stepper motor (10) the mounting hole place of described tb (1) is embedded with the assembly head edge cover of being made by metallic material (11), forms the gap between the assembly head (101) of stepper motor during the closure idling work (10) and the assembly head edge cover (11).

6, according to the plastics closure of the described Motor Vehicle EFI of claim 5 oil-fired system, it is characterized in that: described assembly head edge cover (11) is made by aluminium.

7, according to the plastics closure of the described Motor Vehicle EFI of claim 5 oil-fired system, it is characterized in that: described outer rim of piecing together head edge cover (11) is provided with stop breach (111).

8, according to the plastics closure of the described Motor Vehicle EFI of claim 1 oil-fired system, it is characterized in that: described drag-line support (6) and pipe joint (7) are even for to be made by plastic materials with body (1), and drag-line support (6) and pipe joint (7) form an integral body with body (1).

9, according to the plastics closure of the described Motor Vehicle EFI of claim 1 oil-fired system, it is characterized in that: described body (1) is provided with thread Pilot hole (12) with the connection part of other component, is used for connecting with being connected with tapping screw (13) of other component.