CN100523459C - Throttle control device for internal combustion engine - Google Patents
Throttle control device for internal combustion engine Download PDFInfo
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- CN100523459C CN100523459C CNB2004100058899A CN200410005889A CN100523459C CN 100523459 C CN100523459 C CN 100523459C CN B2004100058899 A CNB2004100058899 A CN B2004100058899A CN 200410005889 A CN200410005889 A CN 200410005889A CN 100523459 C CN100523459 C CN 100523459C
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- plate pin
- closure
- valve fixing
- throttle plate
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Abstract
Throttle valve device for internal combustion engine. A metal member for reinforcing a resin mold part 6 of a throttle shaft 4 is divided into two of a metal shaft part 7 and a metal pipe part 8, and set in the same resin mold for manufacturing the throttle shaft 4, and integrally molded by the resin. Molten resin is poured from a cylindrical clearance formed between the outer peripheral surface of a small-diameter part 54 of the metal shaft part 7 and the inner peripheral surface of the metal pipe part 8. Namely, since the cylindrical clearance can be used as a cylindrical film gate, the generation of weld in the resin valve fixing part 31 can be restricted to prevent deterioration of appearance performance and deterioration of strength in the resin valve fixing part 31.
Description
Technical field
The present invention relates to a kind of throttle control device (throttle valveapparatus) that is used for internal-combustion engine, so that control motor torque or engine speed by the air inlet quantity that changes internal-combustion engine according to accelerator pedal angle, specifically, relate to a kind of throttle control device that is used for internal-combustion engine, it adopts whole resin moulding form, comprises throttle plate pin (throttleshaft), the valve fixing resin part that is used for fixing closure, be used for the accelerator pedal angle that the driver is provided with is sent to the resin lever segment of valve fixing resin part, and the resin shaft part that is used to connect valve fixing resin part and resin lever segment.The present invention also relates to a kind of throttle control device that is used for internal-combustion engine, wherein, the resin column part of the resin shaft of throttle plate pin part and closure is fixed by thermal weld.
Background technique
A kind of common throttle control device that is used for internal-combustion engine has been proposed, shown in Fig. 7 and 8A-8C, it comprises the metal tube 107 that is used to reinforce valve fixing resin part 104, so that under the prerequisite of the external diameter that does not change the integrated axle of accelerator link (throttle plate pin) 106, guarantee enough intensity, throttle plate pin 106 has the acceleration resin lever position 105 that closure 103 can be contained in the valve fixing resin position 104 in the cylindrical hole wall section 102 of throttle body 101 with being used for fixing with opening and be used for driving rotationally closure 103.
Shown in Fig. 7 and 8A～8C, adopt following manner that metal tube 107 is set, thereby be supported on rotationally along perpendicular to the supporting sliding position 113,114 on the cylindrical sliding support respect to one another position 111,112 on the direction of inlet stream directions in the cylindrical hole wall section 102 in axial exposed at both sides on the outer circumferential face of throttle plate pin 106, except valve fixing resin position 104.Be used to connect the interior week that resin shaft part 108 that valve fixing resin part 104 and resin quicken lever segment 105 is set at metal tube 107.The axle head at resin shaft position 108 is set in the opening on two axle heads that are formed on metal tube 107, thereby is exposed to the outside.Metal tube 107 is formed has a plurality of circular holes 115～117, thereby causes fusion thermoplastic resin (thawing resin) to quicken lever segment 105 from the inner space that is formed in the resin shaft position 108 around valve fixing resin position 104 and resin.
In the throttle control device of described ordinary internal combustion engine, the metal tube 107 that will have shape shown in Fig. 8 C inserts in the resin die, will melt resin along direction shown in the arrow A among Fig. 8 A and inject in the inner space of metal tube 107.Adopt this mode, melt resin and after being full of described inner space, flow to periphery from described inner space by the described a plurality of circular holes 115～117 that are formed on the metal tube 107.Adopt this mode, melt resin and be full of valve fixing resin position 104 and resin acceleration lever segment 105 formed spaces.
After this, moulded resin products is taken out from resin die, cooling at normal temperatures becomes solid state.Adopt this mode, valve fixing resin position 104, resin quicken lever segment 105 and resin shaft position 108 forms by resin is whole.At this moment, valve fixing resin position 104 and resin quicken lever segment 105 and adopt following manner to be formed, just melt resin and cover (recovered) again, yet quicken to produce weld seam (weld) on the lever segment 105 at valve fixing resin position 104 and resin from the circular hole 115～117 that is formed on the metal tube 107.Thereby quickening lever segment 105 when standing cold cycling when valve fixing resin position 104 and resin, weld seam is easy to cracking, thereby the dimensional accuracy of throttle plate pin 106 is degenerated.
Also proposed another kind of common internal combustion engine throttle control device, it comprises having resin throttle body, the throttle plate pin that has first and second metals carrying sliding position on the first and second bearing support positions that are slidably supported at throttle body at two ends and the valve fixing resin position between first and second metals carrying sliding position of cylindrical hole wall section that formation is transported to air inlet in the air inlet path of motor.Closure has the cylindrical resin position on the valve fixing resin position periphery that is fixed on throttle plate pin.In this throttle control device, the resin cylinder position of closure is fixed on the valve fixing resin position periphery of throttle plate pin, after this, utilizes laser bonding that the assembling position between valve fixing resin position and the cylindrical resin position is fixed.
Usually, when using laser bonding to carry out hot weld, the welding space between valve fixing resin position and the cylindrical resin position is narrow more, and the weld strength at the assembling position between valve fixing resin position and the cylindrical resin position is high more.For weld strength, when the welding assembled portion is whole when axially being press-fitted, valve fixing resin position and cylindrical resin position are assembled each other, preferably weld the space less than predetermined value.Yet consider the assembling of closure on throttle plate pin, require the cylindrical resin position of closure to be fixed on the valve fixing resin position, make the axial alignment of axis and the axle of through hole by throttle body cylinder hole wall position of the pilot hole at cylindrical resin position simultaneously.Thereby wish a kind of like this structure, closure can be assembled regularly, allows simultaneously to have level of freedom in the direction perpendicular to the axially bored line (radially) of throttle plate pin.
Summary of the invention
An object of the present invention is to provide a kind of engine air control shutter equipment, wherein weld seam can not develop easily at valve fixing resin position, can resin be ftractureed easily owing to the cold cycling at valve fixing resin position and rotating drive resin position, the dimensional accuracy of throttle plate pin be guaranteed easily.
Another object of the present invention provides a kind of engine air control shutter equipment, and wherein the weld strength when the axial region of thermal weld throttle plate pin and closure cylinder position is guaranteed, has improved the installation capability of cylinder position on throttle plate pin of closure simultaneously.
Another object of the present invention provides a kind of engine air control shutter equipment, and it is optimised that wherein the structure at the assembling position between the axial region of throttle plate pin and the closure cylinder position is just welded the structure of assembling the position.
According to first aspect present invention, a kind of engine air control shutter equipment is provided, it comprises: can be contained in the closure in the throttle body with opening, be used for changing according to the closure rotation angle air inlet quantity of flow direction engine; The throttle plate pin that the accelerator pedal angle that is provided with according to the driver is driven and rotates with described closure; Wherein said throttle plate pin comprises the valve fixing resin position that is used for fixing described closure, accelerator pedal angle is sent to the rotating drive resin position of described closure by described valve fixing resin position, with the divided type metal parts that is used to strengthen described valve fixing resin position and described rotating drive resin position, described metal parts comprises that one is set near the center element and and is set at element on the outer peripheral portion, and wherein said divided type metal parts is divided into along the axially extended axostylus axostyle shape metal shaft position of described throttle plate pin and partly is assemblied in tubular metal pipe position on the periphery at described metal shaft position by the space, cylndrical surface, and wherein said metal tube position only is set on the surperficial position of the described throttle plate pin between described valve fixing resin position and the described rotating drive resin position, and the cylindrical resin axial region position that wherein is used to connect described valve fixing resin position and described rotating drive resin position is set in the space, described cylndrical surface, and wherein by melting resin from the supply of space, described cylndrical surface and being cured by cooling off described thawing resin, described valve fixing resin position and described resin shaft position and described rotating drive resin position are molded into one.Valve fixing resin position produces weld seam hardly, and the resin at valve fixing resin position and rotating drive resin position does not ftracture easily, even stand cold cycling, thereby guarantees the dimensional accuracy of throttle plate pin easily.And melt resin from being formed between axostylus axostyle shape metal shaft position and the tubular metal pipe position supply of gap, cylndrical surface, thereby valve fixing resin position can be formed on the periphery at metal shaft position, contains the generation and the resin cracks of weld seam simultaneously.Rotating drive resin position can be formed on the periphery at metal shaft position, contains the generation and the resin cracks of weld seam simultaneously.
According to second aspect present invention, a kind of engine air control shutter equipment is provided, wherein also comprise the divided type metallic member, just from the axially extended axostylus axostyle metal shaft of closure position, determine the position even be assembled the cylinder assembling position on the periphery of valve fixing resin position and on valve fixing resin position, an axial position be set in the setting of closure center of rotation, the diameter dimension of closure does not increase yet, and described axial position determines that the position is used to stop the circumferential rotation of described assembling position along throttle plate pin.
According to third aspect present invention, a kind of engine air control shutter equipment is provided, wherein, the expose portion at metal shaft position constitutes the first supporting sliding position on interior week at the first bearing support position that is supported on throttle body rotationally, the expose portion at metal tube position constitutes the second supporting sliding position on interior week at the second bearing support position that is supported on throttle body rotationally, thereby form a kind of wear-resistingly and do not require the structure of bearing part, thereby can reduce number of elements and installation step and reduce cost.
According to fourth aspect present invention, a kind of engine air control shutter equipment is provided, wherein, coating is applied on the inner wall surface of described closure periphery position or described throttle body selectively, thereby be full of the gap between the inner wall surface of described closure periphery position and described throttle body, the air leakage when reducing idle running.The intercepting and capturing gap that is used to intercept and capture described coating is formed between the periphery of the periphery at the first bearing support position or the second bearing support position and the first supporting sliding position or the second supporting sliding position, thereby stops coating to immerse between the interior week at the first bearing support position and the first supporting sliding position periphery or in week and second gap of supporting between the sliding position periphery at second the bearing support position in.
According to fifth aspect present invention, a kind of engine air control shutter equipment is provided, the position of being press-fitted that has that this mode is formed is adopted at assembling position between the axial region position of throttle plate pin and the cylindrical body position of closure, the overall dimensions of just described axial region position is substantially equal to be formed on the minimum dimension of the pilot hole in the cylinder position, welding space between described axial region position and the described cylindrical body position is less than predetermined value, be press-fitted the position except described, the position is assembled in the gap that has that assembling position between the axial region position of throttle plate pin and the cylindrical body position of closure adopts this mode to be formed, the overall dimensions of just described axial region position is less than the minimum dimension of described pilot hole, and the welding space between described axial region position and the described cylindrical body position is greater than predetermined value.
Between the cylindrical body position of the axial region position of throttle plate pin and closure, be provided with in the part at assembling position and be press-fitted the position, make described axial region position and shown in the welded gaps that is press-fitted between the column part at position be reduced to less than predetermined value, thereby, can guarantee weld strength by the axial region position of thermal weld throttle plate pin and the cylindrical body position of closure.Between the cylindrical body position of the axial region position of throttle plate pin and closure, be provided with in the remainder at assembling position assembling position, gap make described axial region position and shown in be press-fitted that welded gaps between the column part at position increases greater than predetermined value, thereby improved the assembly working at the cylindrical body position of the closure on the axial region position of throttle plate pin.
According to sixth aspect present invention, a kind of engine air control shutter equipment is provided, described assembling position be press-fitted the position and described be press-fitted near the position and have the assembling position, gap in the interior week that is assemblied in the described cylinder position on the periphery of described axial region position constitute the erection welding position, be used for by the periphery of the fixing described axial region position of thermal weld and the interior week at described cylinder position, thereby the welded gaps at erection welding position is reduced so that improve weld strength.
According to seventh aspect present invention, a kind of engine air control shutter equipment is provided, wherein, described thermal weld is a laser bonding, from the radial outside at closure cylinder position outer wall surface projecting laser to described cylinder position, for example, make the periphery of described axial region position and the thermal weld each other of interior week at described cylinder position.Thereby the erection welding position at the assembling position between resin shaft position and the cylindrical resin position is firmly fixed.
According to eighth aspect present invention, a kind of engine air control shutter equipment is provided, and wherein, what described welded gaps overall dimensions was set is not more than 75 microns, thereby the permission laser bonding, thereby firmly fix the erection welding position at the assembling position between resin shaft position and the cylindrical resin position.
According to ninth aspect present invention, a kind of engine air control shutter equipment is provided, wherein, the cylinder position of closure is formed has taper tilted cylindrical envelope wall basically, the external diameter of described cylindrical wall or internal diameter size are determined like this, just increase to the end at described cylinder position from the described position that is press-fitted, can be thereby be press-fitted position and assembling position, gap by resin molded continuously, thus guarantee the dimensional accuracy at the cylinder position of closure easily.
According to tenth aspect present invention, a kind of engine air control shutter equipment is provided, wherein, describedly be press-fitted the axle head that the position is set at described assembling position, another kind of situation is, is press-fitted the position and is set up axle center around described assembling position.At this moment, be press-fitted the center between the cylinder position that the position can roughly be formed on the axial region position of throttle plate pin and closure, thereby stand because of tempering and suction pressure bigger stress roughly.Thereby on the erection welding position at the assembling position between resin shaft position and the cylindrical resin position, the maximum strength at erection welding position can be guaranteed.
The tenth on the one hand according to the present invention, a kind of engine air control shutter equipment is provided, wherein, non-circular shape is adopted in the inboard of the outside of the described axial region position of throttle plate pin and the through hole at closure cylinder position, thereby can prevent the circumferential rotation of the cylinder position of closure along the described axial region of throttle plate pin.
The 12 aspect according to the present invention, a kind of engine air control shutter equipment is provided, wherein, non-circular shape is adopted in the inboard of the through hole at the outside of the axial region position of throttle plate pin and closure cylinder position, the outer wall surface of described axial region is formed has two lateral surfaces of a side, the wall of pilot hole is formed has two valve side lateral surfaces corresponding to two lateral surfaces of described axle side, thereby described cylinder position can be along being substantially perpendicular to the axial radial motion of described axial region.
By the detailed introduction of hereinafter in conjunction with the figure that bows the preferred embodiment of the present invention being carried out, it is clearer that the present invention can become.
Description of drawings
Figure 1A is a front elevation that is used for the throttle control device of internal-combustion engine, and Figure 1B is a sectional view of being done along A-A line among Figure 1A;
Fig. 2 is the sectional view of the throttle control device of an internal-combustion engine;
Fig. 3 A is the front elevation of throttle plate pin, and Fig. 3 B is the side view of throttle plate pin;
Fig. 4 A is the sectional view of being done along B-B line among Fig. 3 A, and Fig. 4 B is the sectional view of being done along C-C line among Fig. 3 A;
Fig. 5 is the sectional view of an amplification of first annular space between the first bearing support position and the first supporting sliding parts;
Fig. 6 is the sectional view of an amplification of second annular gap between the second bearing support position and the second supporting sliding parts;
Fig. 7 is the sectional view of an ordinary internal combustion engine throttle control device;
Fig. 8 A is the sectional view of an ordinary internal combustion engine throttle control device, and Fig. 8 B is the side view of a throttle plate pin, and Fig. 8 C is the perspective view of a metal tube;
Fig. 9 A is the plane view of the assembled portion between a throttle plate pin and the closure, Fig. 9 B is the side view of the assembled portion between a throttle plate pin and the closure, Fig. 9 C is the sectional view of being done along B-B line among Fig. 9 A, and Fig. 9 D is the sectional view of being done along C-C line among Fig. 9 C;
Figure 10 A is the plane view of the assembled portion between a throttle plate pin and the closure, and Figure 10 B is the side view of the assembled portion between a throttle plate pin and the closure, and Figure 10 C is a sectional view of being done along D-D line among Figure 10 A.
Embodiment
Hereinafter introduce first embodiment of the invention.Figure 1A-6 shows the present invention, and wherein Figure 1A, 1B and 2 are the views that show the throttle control device of internal-combustion engine.
The throttle control device of internal-combustion engine that meets this embodiment according to the accelerator pedal angle of driver operation by changing the air inlet quantity that flows into internal-combustion engine (for example sulky vehicle motor, hereinafter referred motor), control engine speed or motor torque.The throttle control device of this internal-combustion engine is a kind of throttle gate cell, and it comprises the throttle body 2 with cylindrical hole wall section 1, within it, and the air inlet flow direction engine; Can be contained in the closure 3 in the cylindrical hole wall section 1 of throttle body 2 with opening; The throttle plate pin 4 that the accelerator pedal operation amount of setting according to the driver (for example accelerator pedal angle) is driven and rotates with closure 3; Be used to make the pivotal position of closure 3 and throttle plate pin 4 to return to the Returnning spring 5 of the initial position of in-engine idling pattern.
On the left end surface of cylindrical hole wall section 1, be used for the cylindrical first bearing support position, 11 employings of supporting section air valve shaft 4 axle heads rotationally and made by integral body from the outstanding left mode of the inner wall surface of hole wall part 1 in the drawings in the drawings.The left end at the first bearing support position 11 seals in the drawings.In the drawings on the right-hand member surface of hole wall part 1, be used for the cylindrical second bearing support position, 12 employings of another axle head of supporting section air valve shaft 4 rotationally and made by integral body from the outstanding to the right mode of the inner wall surface of hole wall part 1 in the drawings.The right-hand member at the second bearing support position 12 seals in the drawings.
The first bearing support position 11 and the second bearing support position 12 are formed has first and second sliding eyes 13,14 respectively, and described sliding eye has circular cross section, and throttle plate pin 4 is suitable for sliding within it.Be equipped with the interior all fairleads 15 of helical spring of Returnning spring 5 to be arranged on the periphery at the second bearing support position 12 by whole.Oil sealing 16 is installed between the periphery of the front end (right-hand member among the figure) at the second bearing support position 12 and throttle plate pin 4.On the right-hand member surface of hole wall part 1, an integrally formed side hook 17 is used for combining with the spring side hook of Returnning spring 5 in the drawings.
Closure 3 is the Unitarily molded products that formed by heat stable resin (polyphenylene sulfide (PPS) comprises the polybutylene terephthalate (PBTG30 etc.) of 30% glass fibre), constitutes one and is used to control the butterfly rotating valve that is inhaled into air inlet quantity in the motor.Closure 3 is formed has substantial cylindrical assembling position 21 and two semicircle tabular parts 22,23 of extending from assembling position 21 etc., this assembling position has a through hole (not shown), be suitable for being assembled in the periphery position (surperficial position) of throttle plate pin 4, the tabular part 22,23 of described semicircle is used to seal air inlet path 10.Assembling position 21 roughly is arranged on the center of rotation of two tabular parts 22,23 of semicircle and is utilized laser or similar hot welding is fixed on the outer peripheral portion (surface portion) of throttle plate pin 4. Reference character 24,25 expressions are used to strengthen the enhancing rib of closure 3.
Hereinafter briefly introduce the structure of this embodiment's throttle plate pin 4 in conjunction with Figure 1A～6.Fig. 3 A, 3B, 4A and 4B show throttle plate pin 4.Throttle plate pin 4 comprises by heat stable resin (polyphenylene sulfide (PPS), the polybutylene terephthalate (PBTG30 etc.) that comprises 30% glass fibre) integrally formed resin molded part 6 and the metallic member (for example SUS304 stainless steel metal axle etc.) that is inserted into molded divided type, described metallic member is used to strengthen resin molded part 6.
The resin molded part 6 of throttle plate pin 4 forms by heat stable resin is Unitarily molded, it comprise the assembling position 21 that is used for fixing closure 3 valve fixing resin position 31, be used for the accelerator pedal operation amount is sent to the resin lever position (rotating drive resin position) 32 of closure 3 and the resin shaft position 33 that links to each other with resin lever position 32 with valve fixing resin position 31 by valve fixing resin position 31.Resin shaft position 33 is formed cylindrical body, connects the interior week at valve fixing resin position 31 and the interior week at resin lever position 32.
In the drawings, valve fixing resin position 31 is formed the cylindrical body on 33 left sides, resin shaft position.Shown in Fig. 3 A and 4B, the outer surface at valve fixing resin position 31 is formed has two flat surfaces (two transverse section surface or circumferentially determine the position), so that stop the circumferential rotation of the assembling position 21 of closure 3 along throttle plate pin 4.The interior perimeter surface at the assembling position 21 of closure 3 is formed has two flat surfaces (two transverse section do not show), corresponding to two flat surfaces 34.
In the drawings, resin lever position 32 is formed the annular slab on 33 right sides, resin shaft position.Resin lever position 32 is formed has cylindrical portion 35 and in the drawings from annular position 36 that cylindrical portion 35 peripheries are radially extended on metallic member right-hand member periphery.The periphery at annular position 36 is formed has V-arrangement week groove 37, opening of valves/close the wire rope (not shown) to be wrapped on this groove 37 so that operatively with the gas pedal interlocking of driver control.The periphery at annular position 36 is formed has opening of valves/close wire rope mounting groove 38,39, is respectively applied for installation opening of valves/close every end of wire rope.
All fairleads 41 are integrally formed in the left end at resin lever position 32 among the figure in cylindrical, cylindrical in the external diameter of external diameter and the interior all fairleads 15 of spring of throttle body 2 of all fairleads 41 identical and be equipped with a Returnning spring.On the other hand in the drawings, a lever side hook 42 is integrally formed on the left end surface at annular position 36, and hook 42 is used for combining with Returnning spring 5 spring side hooks.Resin lever position 32 has a plurality of grooves 43 that are used for balanced thickness.Stiffening rib 44 is set between per two abutting grooves 43.The divided type metallic member is divided into vertically a end surfaces from throttle plate pin 4 to the other end axially extended axostylus axostyle metal shaft position 7, surface and cylindrical metal tube position 8, and cylindrical metal tube position 8 partly is assemblied on 7 peripheries of metal shaft position by gap, a cylndrical surface.One is formed by the axostylus axostyle that forms such as stainless metallic material and by the insert molding (insert molding) and the resin molded position 6 of throttle plate pin 4 in metal shaft position 7.In the drawings, metal shaft position 7 is extending axially from the left end surface to the whole of right-hand member surface.
The end axial surface at metal shaft position 7 partly is projected into outside the valve fixing resin position 31, expose as the outer surface of throttle plate pin 4, this projection is formed the first supporting sliding position 51 on the inner peripheral surface of first sliding eye 13 at the first bearing support position 11 that is supported on throttle body 2 with being rotated.The right-hand member at metal shaft position 7 outstanding (giving prominence to) is outside 32 right-hand member surfaces, resin lever position in the drawings.Left end portion in the drawings, metal shaft position 7 has solid cylinder major diameter part 53, major diameter part 53 right end portion in the drawings, metal shaft position 7 has solid cylinder small diameter portion 54.The diameter of small diameter portion 54 is littler than the diameter of major diameter part 53.
Corresponding to valve fixing resin position 31, be set on the outer circumferential face in the small diameter portion 54 part center portions in the air inlet path 10 of hole wall part 1 of throttle body 2 and be formed with recess 55, so that improve and being connected of the interior perimeter surface at valve fixing resin position 31.Also form recess 56 on the outer circumferential face of outstanding small diameter portion 54 to the right from the right-hand member of resin shaft part 33 in the drawings, in order to improve and being connected of the inner peripheral surface at resin lever position 32.
According to this embodiment, on the internal face of the hole wall part 1 of the outer peripheral portion of closure 3 and throttle body 2, coating (for example semisolid or liquid coatings such as tetrafluoroethylene resin, fluororesin, molybdenum disulfide) adopts this mode to be applied in, thereby the gap between the internal face of the outer peripheral portion of filling closure 3 and the hole wall part 1 of throttle body 2, this coating is solidified into powder type then.As shown in Figure 5, between the periphery of the first supporting sliding position 51 of interior week at the first bearing support position 11 of throttle body 2 and throttle plate pin 4, be formed for intercepting and capturing first annular space (intercepting and capturing gap (trap gap)) 61 of immersing coating.According to this embodiment, first annular space 61 is formed along the circumferential annular portion of the outer circumferential face of the major diameter part 53 at metal shaft position 7.As shown in Figure 6, between the interior week of the second supporting sliding position 52 of interior week at the second bearing support position 12 of throttle body 2 and throttle plate pin 4, be formed for intercepting and capturing second annular space (intercepting and capturing gap) 62 of immersing coating.
Hereinafter briefly introduce the method for making the engine air control shutter equipment that meets this embodiment in conjunction with Figure 1A～6.
The heat stable resin that at first is heated and melts (hereinafter be called and melt resin) is injected in the die cavity that is formed by resin die by one or more cast gates, described mould comprises the blanking die that is used to form air inlet path 10 and is used to form the blanking die of first and second sliding eyes 13,14, thereby will melt the die cavity that resin is full of described resin die.In resin die, remove the thawing resin that is filled in the described die cavity, cool off and harden (curing).Another kind method is, such as the cooling medium of cooling water around the circulation of resin die die cavity, thereby make cooling of thawing resin and the sclerosis (curing) that is filled in the described die cavity.Thereby make throttle body 2 by heat stable resin integral body with hole wall part 1 and first and second bearing support positions 11,12.
On the other hand, the metal shaft position 7 of making the axostylus axostyle shape by cutting such as stainless metallic material.In manufacturing process, the periphery at metal shaft position 7 can be by annular knurl (for example as shown in Figure 2, having recess 55,56) partly, so that improve the reliability that metal shaft position 7 is clamped at valve fixing resin position and resin lever position 32.Make cylindrical metal tube position 8 by cutting such as stainless metallic material equally.
Then, the heat stable resin that is heated and melts (hereinafter be called and melt resin) is injected in the die cavity that is formed by resin die by one or more cast gates, described resin die for example comprises the blanking die that is used to form the through hole in the assembling position 21, thereby will melt the die cavity that resin is full of described resin die.In resin die, remove the thawing resin that is filled in the described die cavity, cool off and harden (curing).Another kind method is, such as the cooling medium of cooling water around the circulation of resin die die cavity, thereby make cooling of thawing resin and the sclerosis (curing) that is filled in the described die cavity.Thereby, make closure 3 with assembling position 21 and two tabular parts 22,23 of semicircle by heat stable resin integral body.
Then with the periphery assembling at the major diameter position 53 at metal shaft position 7 with remain on regularly on the inner peripheral surface of the first bearing support position (not shown) of resin die.The outer circumferential face at metal tube position 8 adopts following manner to be assembled and remains on regularly on the inner peripheral surface of the second bearing support position (not shown) of resin die, thereby by gap, a cylndrical surface, metal tube position 8 is assembled in the precalculated position on the small diameter portion 54 at metal shaft position 7.Thereby, be inserted into and remain in the formed cavity of resin die regularly by the metal shaft position 7 of making and by the metal tube position 8 of making such as stainless metallic material such as stainless metallic material.
The heat stable resin (hereinafter be called melt resin) of heating and fusing injects left from the right-hand member position in the gap, cylndrical surface between the inner peripheral surface at the outer circumferential face of the small diameter portion 54 that is formed on metal shaft position 7 and metal tube position 8 in the drawings by one or more cast gates, also can be in the drawings inject to periphery, be full of the thawing resin thereby make in the die cavity of resin die from the right-hand member of the small diameter portion 54 at metal shaft position 7.In above-mentioned operation, preferably the resin cast gate is set on the resin lever position 32, thereby the gap, narrow cylndrical surface of melting between the inner peripheral surface at the outer circumferential face of the small diameter portion 54 of resin by being formed on metal shaft position 7 and metal tube position 8 is injected into (membrane gate method).
The thawing resin that is introduced into the gap, cylndrical surface that is used to form resin shaft position 33 directly flows into valve fixing resin position 31 from the gap, cylndrical surface.On the other hand, the thawing resin that is injected in the cavity between the inner peripheral surface of the right-hand member outer circumferential face that forms the small diameter portion 54 at metal shaft position 7 in the drawings and resin die flows directly into resin lever position 32.The thawing resin that is full of described cavity is removed in resin die, cools off then and harden (curing).Another kind method is, such as the cooling medium of cooling water around the circulation of resin die die cavity, thereby the thawing resin that is filled in the described die cavity is cooled off and harden (curing), rather than resin die is cooled off.7 small diameter portion, 54 clipped objects in metal shaft position are embossed in valve fixing resin position 31 and the resin shaft position 33 then, on the other hand, with the resin molded position 6 of metal tube position 8 integrally formed throttle plate pins 4 by heat stable resin by on the resin molded periphery that is integrally formed in resin shaft position 33.
Then, the spring side hook of Returnning spring 5 is assembled on the side hook 17 on the outer wall surface (right-hand member surface among the figure) at the hole wall position 1 that is formed on throttle body 2, in the drawings, the left-hand portion of Returnning spring 5 is assembled on the periphery of all fairleads 15 in the helical spring on the outer wall surface (right-hand member surface among the figure) at the hole wall position 1 that is formed on throttle body 2.Adopt this mode, Returnning spring 5 is assembled on the outer wall surface (right-hand member surface among the figure) at the hole wall position 1 of throttle body 2.
In the air inlet path 10 in the hole wall position 1 that closure 3 is adopted following manners to insert to be formed on throttle body 2, so that align with the axial centre, the axial centre that is respectively formed at first and second sliding eyes 13,14 on the first and second bearing support positions 11,12 of through hole on being formed on closure 3 assembling positions 21.Insert in first sliding eye 13 of second sliding eye 14, this through hole and throttle plate pin 4 from the right-hand member at the second bearing support position 12 of throttle body 2 preface successively in the drawings then.Adopt this mode, throttle plate pin 4 is assembled on the throttle body 2.
Then, the spring side hook of Returnning spring 5 is assembled on the side hook 42 on the outer wall surface (left end surface among the figure) at the resin lever position 32 that is formed on throttle plate pin 4, and the right-hand member position of Returnning spring 5 is assembled on the periphery of all fairleads 41 in the helical spring on the outer wall surface (left end surface among the figure) that is formed on resin lever position 32 among the figure.Then, Returnning spring 5 is installed between the outer wall surface (left end surface among the figure) at resin lever position 32 of the outer wall surface (right-hand member surface among the figure) at the hole wall position 1 of throttle body 2 and throttle plate pin 4.
Use the hot weld method such as laser bonding on the hole wall position 1 of throttle body 2, the assembling position 21 of closure 3 is fixed on the periphery that remains on the valve fixing resin position 31 of the throttle plate pin 4 in precalculated position in the air inlet path 10.Thereby, comprise that the engine air control shutter equipment of throttle body 2, closure 3, throttle plate pin 4 and Returnning spring 5 is manufactured.Use above-mentioned manufacture method and manufacturing step can reduce number of elements and manufacturing process effectively.
Hereinafter briefly introduce the manipulation of the throttle control device that meets this embodiment in conjunction with Figure 1A～6.
The pedal in case the driver steps on the throttle, the angle of quantity is stepped at the resin lever position 32 that is mechanically connected to gas pedal by wire rope corresponding to gas pedal against the elastic force rotation one of Returnning spring 5.The rotation at resin lever position 32 is sent to valve fixing resin position 31 by resin shaft position 33, and along with the rotation at valve fixing resin position 31, closure 3 rotates the angle identical with resin lever position 32, just identical with throttle plate pin 4 angle.Thereby the air inlet path 10 of motor is turned on to predetermined closure opening degree, thereby engine speed is changed to a value corresponding to accelerator pedal angle.
In case the driver unclamps his/her pin from gas pedal, opposite under the elastic force effect of Returnning spring 5, closure 3 and throttle plate pin 4 return initial position (idle position), thereby the air inlet path 10 of motor is closed (buttoned-up status), and motor enters the idling pattern.
By the agency of meet the effect of this embodiment's engine air control shutter equipment.In this embodiment's engine air control shutter equipment, the resin molded position 6 of throttle plate pin 4 comprises the metal shaft position 7 be made up of rod member and the metal-cored metal at cylindrical metal tube position.Need not the diameter dimension of throttle plate pin 4 is increased to unwanted degree, thereby the intensity of throttle plate pin 4 is increased.Specifically, in this embodiment's throttle plate pin 4, all compare with all resin throttle plate pins by the heat stable resin manufacturing, utilize the small diameter portion 54 at metal shaft position 7 to strengthen valve fixing resin position 31, valve fixing resin position 31 has enough resistances for the over load of intake pipe negative pressure, and described negative pressure is sent on the closure 3 that is contained in the air inlet path 10.
Even the intake pipe negative pressure that is produced in the motor is sent to closure 3, the valve fixing resin position 31 that is used for fixing closure 3 is not distorted or distortion, need not the undue external diameter that changes resin molded valve fixing resin position 31, just can guarantee enough intensity.Otherwise the size in the suction tude air inlet path that will increase along with the external diameter at valve fixing resin position 31 and increase is not increased, thereby can reduce the size that suction tude took up space around motor.
The first and second supporting sliding positions 51,52 of throttle plate pin 4 both sides adopt following manner to slide, thereby the first supporting sliding position 51 (for example SUS304) at metal shaft position 7 slides with the first bearing support position 11 (for example PBTG30) of throttle body 2, and the second supporting sliding position 52 (for example SUS304) at metal tube position 8 slides with the second bearing support position 12 (for example PBTG30) of throttle body 2.Need not to be provided with such as ball bearing or thrust-bearing, form supporting sliding position with high wear resistance.Specifically, by the first and second supporting sliding positions, 51,52 whole formation the on the major diameter part 53 at the metal shaft position 7 of making and metal tube position 8 and the first and second bearing support positions 11,12 that are supported on throttle body 2 respectively rotationally such as stainless metallic material.This is very excellent with respect to wear resistance.According to this embodiment, need not bearing element, thereby number of elements and installation step be reduced such as ball bearing or thrust-bearing, reduced cost.
" weld seam " is when fill melting the polymerization again that separates the position in the resin and solidify in mould, is formed on the discontinuous part of the resinous polymer in the resin boundary surface of being integral, and compares with the polymer position of continuous formation, and its intensity is low.Specifically, when adopting axial mode molded, when direction perpendicular to axial direction generates described weld seam, the reduction in strength in the bending shaft direction.According to the present invention, on the other hand,, use the divided type metallic member as strengthening element according to this embodiment, constitute near the element of the setting in center vertically and be arranged on an element at periphery position.Thereby forming the resin material at periphery position and the resin material at organization center position can be molded, and is not separated on square with the axis direction.Thereby, may not be lowered because of the intensity that weld seam is reduced.Particularly in cast gate (gate) is set at Fig. 4 A for example in the position shown in arrow A and the B during at least one position, in molding process, resin can flow to the end, and laterally is not diverted to axle, thereby, do not reduce intensity not perpendicular to the weld seam of axle.Structure of the present invention is not limited in position shown in the arrow in Fig. 4 A.
In meeting this embodiment's engine air control shutter equipment, the metallic member that is used to strengthen the resin molded position 6 of throttle plate pin 4 is divided into two elements that comprise metal shaft position 7 and metal tube position 8, by at same resin die with resin molded, they can be combined into one, make throttle plate pin 4.In this manufacturing process, melt resin and be introduced into from the gap, cylndrical surface between the inner peripheral surface at the outer circumferential face of the small diameter portion 54 that is formed on metal shaft position 7 and metal tube position 8.Specifically, because the gap, cylndrical surface can be used as the cylinder membrane gate (according to this situation, be known as the membrane gate method), be contained in the generation of valve fixing resin position 31 inside welds, thereby can stop the degeneration of outward appearance and the decline of concrete component strength.
In addition, by being contained in the generation of valve fixing resin position 31 inside welds, because the resin crackle that the circulation of the hot and cold of the resin molded part 6 of throttle plate pin 4 causes can be contained that after the annealing, the dimensional accuracy of the resin molded part 6 of throttle plate pin 4 is enhanced.Annealing is defined as heat treatment, just keeps proper temperature after the scheduled time at product, and cooling lentamente is used to eliminate heat or the mechanical residual stress that produces in the resin molded part 6.
According to prior art, shown in Fig. 7 and 8A～8C, the diameter of axle of throttle plate pin 106 is constant, and the length of inserting in the resin die is very big, thereby metal tube 107 can not be assembled in the cavity in the resin die easily.On the contrary according to this embodiment, the metallic member that is used to strengthen the resin molded position 6 of throttle plate pin 4 is divided into two elements, thereby metal shaft position 7 and metal tube position 8 can be arranged in the resin die easily, thereby reduces product cost.
In addition, in meeting this embodiment's engine air control shutter equipment, (two vertical plane position or circumferential position determine the position) 34 are formed on the outer circumferential face at valve fixing resin position along two planes that throttle plate pin 4 circumferentially rotates at the assembling position 21 that is used to stop closure 3.In the prior art, shown in Fig. 7 and 8A～8C, structure with two lateral surfaces positions on the outer circumferential face that is formed on valve fixing resin position 104 is necessary, so that guarantee the space in the metal tube 107, melt resin so that inject, this requires the corresponding increase of the diameter of axle of throttle plate pin 106 conversely.Yet, according to this embodiment, melt the small diameter portion 54 that resin need not to be introduced into metal shaft position 7, compare with existing structure, the diameter of throttle plate pin 4 can be reduced, can be manufactured unheavy.
Hereinafter introduce other embodiments of the invention.In the above-described embodiments, being used for sending accelerator pedal angle the resin lever position 32 of closure 3 to by valve fixing resin position 31 and resin shaft position 33 can be by an end at the Unitarily molded minor diameter position 54 at metal shaft position 7 of resin, the resin molded position 6 that is used to strengthen throttle plate pin 4.Another kind of scheme is, being used for sending accelerator pedal angle the resin valve side gear position of closure 3 to by valve fixing resin position 31 and resin shaft position 33 can be by an end at the Unitarily molded minor diameter position 54 at metal shaft position 7 of resin, the resin molded position 6 that is used to strengthen throttle plate pin 4.In the case, closure 3 rotates with described resin valve side gear position under motoring by reduction gear.
In the above-described embodiments, metal tube position 8 is formed cylinder.Another kind of scheme is that general cylindrical shape can be formed by a plurality of arc metal pipe element that is provided with vertically in metal tube position 8.Another kind of scheme is that a plurality of metal rings can be arranged to metal tube vertically.In the above-described embodiments, the assembling position 21 of closure 3 is fixed on by thermal weld on the periphery at valve fixing resin position 31 of throttle plate pin 4.Another kind of situation is, utilizes fastened tools, and the assembling position 21 of closure 3 is fixed on the periphery at valve fixing resin position 31 of throttle plate pin 4.
Hereinafter introduce second embodiment of the invention.Fig. 9 A～9D shows second embodiment of the invention, and Fig. 9 A～9D shows the assembling position between throttle plate pin and the closure.
Valve fixing resin position 31 is formed the non-cylindrical element and is set at the left side at resin shaft position 33 in the drawings.Valve fixing resin position 31 comprises assembling position 121, and wherein closure 3 is assembled under pressure on the assembling position 121.Be formed with on the outer circumferential face at valve fixing resin position 31 be used to stop closure 3 along two planes that throttle plate pin 4 circumferentially rotates (two vertical plane position or circumferential position determine the position) 34.Specifically, two Transverse plane positions 34 are non-round positions, stop throttle plate pin 4 and closure 3 to relatively rotate.
The outer circumferential face position (surperficial position) that assembling position 21 is configured to center on the center of rotation of two tabular parts 22 of semicircle and is fixed on throttle plate pin 4 by laser bonding.Shown in Fig. 9 A～9D, assembling position 21 has to be fixedly fitted in the center portion at the valve fixing resin position 31 of throttle plate pin 4 and dwindles unit 141 on the assembling position 121 at valve fixing resin position 31 of throttle plate pin 4.Dwindling two axle sides of unit 141, the external diameter of the cylindrical wall 142,143 of taper inclination or internal diameter little by little increase from dwindling two axle heads (two open ends) of unit 141 to assembling position 21 basically.
Ellipse hole (pilot hole 144) is formed and axially passes assembling position 21.Just be formed on two lateral surfaces positions 34 on the outer circumferential face at valve fixing resin position 31 corresponding to the profile of throttle plate pin 4, assembling inner peripheral surface at position 21 and outer circumferential face are formed has position, two planes (two lateral surfaces positions) 145, is used to stop the circumferential rotation of throttle plate pin 4 along closure 3.The axis that zone on the inner peripheral surface at assembling position 21 and the outer circumferential face except described two Transverse planes 145 has with assembling position 21 is the radius of curvature arc at center.
Hereinafter introduce the structure at the assembling position 21 of the valve fixing resin position 31 of the throttle plate pin 4 that meets this embodiment and closure 3 in conjunction with Fig. 9 A～9D.The part at assembling position and the core that specifically assembles the position are formed has the position of being press-fitted 151, in the assembling position 121 at valve fixing resin position 31 and dwindling between the unit 141 of assembling position 21, this is press-fitted the welded gaps that position 151 has the preliminary dimension of being not more than.The minimum dimension of the overall dimensions at valve fixing resin position 31 and through hole 144 (pilot hole) is equal to each other basically.
Erection welding positions 153 are formed in being press-fitted position 151 and being press-fitted near 151 assembling positions, gap 152, position of assembling position, be used for making the periphery at resin position 31 fixed to one another, on the periphery at the valve fixing resin position 31 that is assembled in throttle plate pin 4 interior week at the assembling position 21 of closure 3 with the interior week at assembling position 21 by the laser bonding standing valve.The overall dimensions of the welded gaps at erection welding position 153 (welding space) is configured to be not more than the predetermined value (75 microns) that allows to carry out laser bonding.Consider the intensity at erection welding position 153, the overall dimensions of the welded gaps at erection welding position 153 (welding space) is hoped to set is not more than predetermined value S (25 microns).
As mentioned above, the part at the assembling position between the valve fixing resin position 31 of the assembling position 21 of closure 3 and throttle plate pin 4 is formed and to be press-fitted 151, two lateral surfaces positions 34, position and two lateral surfaces positions 145 by along the cross setting among Fig. 9 D.Adopt this mode, the position at the assembling position 21 of closure 3 can just be limited on the direction perpendicular to the axial direction at the valve fixing resin position 31 of throttle plate pin 4 in the Vertical direction among Fig. 9 D.
Hereinafter briefly introduce the method for making the engine air control shutter equipment that meets this embodiment in conjunction with Fig. 9 A～9D.
At first, the spring side hook of Returnning spring 5 is assembled on the side hook 17 on the outer wall surface (right-hand member surface among the figure) of the hole wall part 1 that is formed on throttle body 2, the left-hand portion of Returnning spring 5 is assembled on the periphery of fairlead 15 in the helical spring on the outer wall surface (right-hand member surface among the figure) of the hole wall part 1 that is formed on throttle body 2 among the figure.Adopt this mode, Returnning spring 5 is assembled on the outer wall surface (right-hand member surface among the figure) of the hole wall part 1 of throttle body 2.
Then, closure 3 inserted in the air inlet path 10 in the hole wall part 1 that is formed on throttle body 2, thereby the axis of the through hole (pilot hole) 144 at the assembling position 21 of closure 3 and the axis that is formed on first and second sliding eyes on the first and second bearing support positions 11,12 of throttle body 2 overlap each other.Then, by throttle plate pin 4 is inserted second sliding eye, through hole (pilot hole) 144 and first sliding eye successively from the right-hand member (Figure 12) at the second bearing support position 12 of throttle body 2, throttle plate pin 4 is assembled on the throttle body 2.
The spring side hook of Returnning spring 5 is assembled on the lever side hook 42 on the outer wall surface (left end surface among the figure) at the resin lever position 32 that is formed on throttle plate pin 4, and the position, right side of Returnning spring 5 is assembled on the periphery of fairlead 41 in the helical spring on the outer wall surface (left end surface among the figure) that is formed on resin lever position 32 among the figure.Adopt this mode, Returnning spring 5 is assembled between the outer wall surface at resin lever position 32 of the outer wall surface (right-hand member surface among the figure) of the hole wall part 1 of throttle body 2 and throttle plate pin 4.
On the outer wall surface of the hole wall part 1 of throttle body 2, when the assembling position 21 with closure 3 is assemblied on the periphery at valve fixing resin position 3 of throttle plate pin 4, the throttle body assembly is assembled on the anchor clamps of laser welding apparatus (not shown), described anchor clamps can to-and-fro motion in prespecified range, the Laser Equipment side of being provided thereon.Laser Equipment focuses on by the laser beam that prism etc. sends lasing light emitter, and laser beam is projected on the outer wall surface at the assembling position 21 in the hole wall position 1.Semiconductor laser light source with about 20～30W laser output is used as Laser Equipment.
Another kind of scheme is that pulsed YAG (yttrium aluminum garnet) laser, CO2 laser etc. can be used as lasing light emitter.Anchor clamps speed is set to about 10 mm/second.
When the lasing light emitter of Laser Equipment projected on the outer wall surface at assembling position 21 of closure 3, anchor clamps moved axially along throttle plate pin 4 with laser beam, simultaneously along the direction swing perpendicular to the axial direction of throttle plate pin 4.In this operation, laser beam enters the assembling position 21 of closure 3, arrives and is absorbed on the valve fixing resin position 31 of throttle plate pin 4 by it.Shown in Fig. 9 A, the laser that is throwed makes the outer circumferential face fusing at valve fixing resin position 31 then, heats and make the inner wall surface fusing at assembling position 21 equally, thereby makes the outer circumferential face of valve resin fixed position 31 and the inner wall surface thermal weld each other at assembling position 21.
According to this embodiment.Shown in Fig. 9 A and 9B, along throttle plate pin 4 axially carry out laser bonding, be press-fitted position 151 as the center on two lateral surfaces positions 145 at two lateral surfaces positions 34 at valve fixing resin position 31 and assembling position 21.Specifically, laser bonding is divided into two steps carries out, respectively at the observation side and the opposite side surface at two lateral surfaces positions 145 at the assembling position 21 of closure 3.Thereby the erection welding position 153 shown in the 152 pie graph 9C of position is assembled in being press-fitted position 151 and being press-fitted near 151 gaps, position of the assembling position between the valve fixing resin position 31 of throttle plate pin 4 and the assembling position 21 of closure 3.
As mentioned above, comprise that the engine air control shutter equipment of throttle body 2, closure 3, throttle plate pin 4 and Returnning spring 5 is manufactured.The manufacture method of this throttle control device and manufacturing process help to reduce number of elements and process.
Hereinafter introduce the effect of the engine air control shutter equipment that meets this embodiment.As mentioned above, in meeting this embodiment's engine air control shutter equipment, be press-fitted position 151 and be set up as the part at the assembling position between the assembling position 21 of the valve fixing resin position 31 of throttle plate pin 4 and closure 3.Specifically, be press-fitted that the valve fixing resin position 131 at position 151 and the welding space of assembling between the position 21 can be reduced less than predetermined value, thereby when being welded to one another the assembling position 21 of the valve fixing resin position 31 of throttle plate pin 4 and closure 3 together, can guarantee enough weld strengths with laser.
Specifically, engine air control shutter equipment is installed on the vehicle and launched machine is handled, be press-fitted on the core at assembling position between the assembling position 21 that position 151 is set at the valve fixing resin position 31 of throttle plate pin 4 and closure 3, stand when engine running by bearing the bigger stress that suction press (suction pressure) or tempering cause.Adopt this mode, have the core that the erection welding position 153 that allows the laser bonding gap width roughly is formed on the assembling position.Thereby the maximum strength at erection welding position 153 can be guaranteed between valve fixing resin position 31 peripheries of throttle plate pin 4 and the assembling position 21 of closure 3, thereby has improved the welding quality at erection welding position 153.
When even intake pipe negative pressure or tempering are applied on the closure 3, the valve fixing resin position 31 that is used for the throttle plate pin 4 by laser bonding fixed knot valve 3 is not distorted yet or is out of shape, need not to change the external diameter at valve fixing resin position 31, can guarantee enough intensity.Prevention causes the diameter of suction tude air flue to increase because of the increase of valve fixing resin position 31 external diameters, thereby can reduce around the occupied space of the suction tude of motor.
In addition, because assembling position 152 in gap is set on the residue assembling position between the assembling position 21 of valve fixing resin position 31 peripheries of throttle plate pin 4 and closure 3, just be press-fitted on the assembling position outside the position 151, gap assembling position 152 valve fixing resin position 31 and the welding space between the assembling position 21 can be increased to greater than predetermined value.Thereby the assembling position 21 of closure 3 can be assembled on the valve fixing resin position 31 of throttle plate pin 4 more easily.
Hereinafter introduce the 3rd embodiment.Figure 10 A～10C demonstration meets the closure of third embodiment of the invention and the assembling position between the throttle plate pin.
In the drawings, the left end at the assembling position 21 of this embodiment's closure 3 is formed and has by the film 141 of press fit on the periphery at the assembling position 121 at the valve fixing resin position 31 of throttle plate pin 4.Right side in the drawings on the other hand, along film 141 axially, be formed with taper tilted cylindrical envelope wall 143 basically, its external diameter or internal diameter are along direction (open end on right side among the figure) axially the increasing gradually along assembling position 21 from film 141 right-hand member to figure.
According to this embodiment, the part at the assembling position between the valve fixing resin position 31 of the assembling position 21 of closure 3 and throttle plate pin 4, or the right-hand member that specifically assembles the position in the drawings is formed and has the position of being press-fitted 151, this welding space that is press-fitted position 151 adopts following manner less than the predetermined value between the film 141 at the assembling position 121 at valve fixing resin position 31 and assembling position 21, thereby the overall dimensions at valve fixing resin position 31 is substantially equal to the minimum dimension of through hole (pilot hole) 144.What be press-fitted that assembling position outside the position 151 is formed has an assembling position 152, gap, the welding space at assembling position 152, gap adopts following manner greater than the tilted cylindrical envelope wall 143 at assembling position 21 and the predetermined value between the valve fixing resin position 31, and just the overall dimensions at valve fixing resin position 31 is less than the minimum dimension of through hole (pilot hole) 144.
With on the periphery at the valve fixing resin position 31 that is assemblied in throttle plate pin 4 interior week at the assembling position 21 of closure 3 time, being press-fitted position 151 and being press-fitted near the position 151 assembling positions 152, gaps of described assembling position is formed and has erection welding position 153, is used for making the interior week at the periphery at valve fixing resin position 31 and assembling position 21 fixed to one another by laser bonding.The described welded gaps at erection welding position 153 (welding space) overall dimensions is set to and is not more than the predetermined value S (75 microns) that allows laser bonding.
As mentioned above in the drawings, be press-fitted position 151 and be set at left end, be not set on the center portion at assembling position between the assembling position 21 of valve fixing resin position 31 peripheries of throttle plate pin 4 and closure 3.Although this structure, erection welding position 153 can roughly be arranged on the center portion at assembling position between the assembling position 21 of valve fixing resin position 31 peripheries of throttle plate pin 4 and closure 3, thereby stand the maximum stress that causes by suction pressure or tempering, thereby, can obtain the advantage identical with second embodiment.Specifically, this structure can be resisted the excessive intake pipe negative pressure load of the closure 3 that is sent in the air inlet path 10.
Introduce other embodiment at last.In the above-described embodiments, the outer circumferential side and the resin lever position 32 of end that is used to strengthen the metal shaft position 7 at throttle plate pin 4 resin molded positions is integrally molded as, and resin lever position 31 is used for giving closure 3 with accelerator pedal angle by valve fixing resin position 31 and 33 transmissions of resin shaft position.Yet resin lever position 32 need not certain and valve fixing resin position 31 is integrally formed.At the outer circumferential side of the end at the metal shaft position 7 that is used to strengthen throttle plate pin 4 resin molded positions, resin lever position 32 can be formed the resin valve side gear part that is used for accelerator pedal angle is given by valve fixing resin position 31 and 33 transmissions of resin shaft position closure 3.Utilize the reduction gear of motor this moment, drive closure 3 by partly being made into integration with resin valve side gear.
In the above-described embodiments, valve fixing resin position 31, resin lever position 32 and the resin shaft position 33 with throttle plate pin 4 can be integrally molded as by heat stable resin.In addition, also only the axial region of throttle plate pin 4 be molded as by heat stable resin.In the above-described embodiments, the tabular part of the assembling position of closure 3 (cylindrical resin position) 21 and two semicircles 22 is integrally molded as by heat stable resin.Another kind of scheme is that only the cylinder position of closure 3 is molded as by heat stable resin.Also can use the hot weld method outside the method for laser welding.
According to the foregoing description, utilize the divided type metallic member resin molded position (particularly valve fixing resin position 31) that strengthens throttle plate pins 4, metal shaft position 7 and metal tube position 8 just.Another kind of scheme is that the resin molded position of throttle plate pin 4 (particularly valve fixing resin position 31) also can be strengthened by axostylus axostyle shape metallic material or cylindric metallic material.Metal tube position 8 can constitute so that form a plurality of arc metal tube of a generally cylindrical body by being provided with vertically.A plurality of in addition annular metal components can be provided with vertically.
Below the present invention has been done very detailed description, thus after reading and having understood this specification, for a person skilled in the art, various changes of the present invention and revise and will become obvious.So all are so changed and correction is also included within this invention, so they are in protection scope of the present invention.
Claims (4)
1. engine air control shutter equipment comprises:
Can be contained in the closure in the throttle body with opening, be used for changing the air inlet quantity of flow direction engine according to the closure rotation angle; With
The throttle plate pin that the accelerator pedal angle that is provided with according to the driver is driven and rotates with described closure;
Wherein said throttle plate pin comprises the valve fixing resin position that is used for fixing described closure, sends accelerator pedal angle the rotating drive resin position of described closure to and be used to strengthen described valve fixing resin position and the divided type metal parts at described rotating drive resin position by described valve fixing resin position, described metal parts comprise one be set near the center element and be set on the outer peripheral portion element and
Wherein said divided type metal parts be divided into along the axially extended axostylus axostyle shape metal shaft position of described throttle plate pin and partly be assemblied in by the space, cylndrical surface on the periphery at described metal shaft position tubular metal pipe position and
Wherein said metal tube position only be set on the surperficial position of the described throttle plate pin between described valve fixing resin position and the described rotating drive resin position and
The cylindrical resin axial region position that wherein is used to connect described valve fixing resin position and described rotating drive resin position is set in the space, described cylndrical surface, and wherein by melting resin from the supply of space, described cylndrical surface and being cured by cooling off described thawing resin, described valve fixing resin position and described resin shaft position and described rotating drive resin position are molded into one.
2. engine air control shutter equipment as claimed in claim 1 is characterized in that: described closure comprises the cylindrical assembling position that is suitable for being assembled at the center of rotation position on the periphery at described valve fixing resin position; And wherein said valve fixing resin position has circumferential position and determines the position, is used to make described assembling position to stop along the circumferential rotation of described throttle plate pin.
3. engine air control shutter equipment as claimed in claim 1 or 2 is characterized in that: described throttle body comprises the cylindrical first bearing support position that is used for supporting rotationally described throttle plate pin axle head, the cylindrical second bearing support position that is used for supporting rotationally described another axle head of throttle plate pin; The surface portion of wherein said metal shaft position axle head is exposed on the outer circumferential face of the described throttle plate pin outside the described valve fixing resin position, and described expose portion constitute on the interior week that is supported on the described first bearing support position rotationally the first supporting sliding position and
Another end axial surface at wherein said metal tube position partly is exposed on the outer circumferential face of the described throttle plate pin outside the described valve fixing resin position, and described expose portion constitutes the second supporting sliding position on the interior week that is supported on the described second bearing support position rotationally.
4. engine air control shutter equipment as claimed in claim 3, it is characterized in that: the coating of air leakage is applied in the inner wall surface of described closure periphery position or described throttle body when being used to reduce idle running, thereby be full of between the inner wall surface of described closure periphery position and described throttle body the gap and
Wherein be used to intercept and capture between the periphery that gap that described coating immerses part is formed on interior week at described first bearing support position or the described second bearing support position and described first supporting sliding position or the described second supporting sliding position.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003043997A JP2004251235A (en) | 2003-02-21 | 2003-02-21 | Throttle valve device for internal combustion engine |
| JP043997/2003 | 2003-02-21 | ||
| JP2003043945A JP4302408B2 (en) | 2003-02-21 | 2003-02-21 | Method for manufacturing throttle valve for internal combustion engine |
| JP043945/2003 | 2003-02-21 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101774095A Division CN101413443A (en) | 2003-02-21 | 2004-02-20 | Throttle valve device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523213A CN1523213A (en) | 2004-08-25 |
| CN100523459C true CN100523459C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100058899A Expired - Fee Related CN100523459C (en) | 2003-02-21 | 2004-02-20 | Throttle control device for internal combustion engine |
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| CN (1) | CN100523459C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007092667A (en) * | 2005-09-29 | 2007-04-12 | Aisan Ind Co Ltd | Molded article and throttle device provided with molded article |
| CN102251861A (en) * | 2011-06-10 | 2011-11-23 | 天津大学 | Controlled exhaust backpressure valve for engine |
| DE102012111948B4 (en) | 2012-12-07 | 2015-05-28 | Pierburg Gmbh | Valve device for an internal combustion engine |
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2004
- 2004-02-20 CN CNB2004100058899A patent/CN100523459C/en not_active Expired - Fee Related
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