Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of automatic resetting device for carburetor throttle is provided, this device has been simplified the operation to air door, and is convenient to assembling, and can prevent effectively that the engine power that causes because of operate miss from descending, oil consumption is risen and problem such as discharging rising.
To achieve these goals, a kind of automatic resetting device for carburetor throttle of the present invention comprises the Carburetor body, fixedly installs the sliding sleeve with through hole on the described Carburetor body; The draw runner of a cylindricality is arranged in the described through hole, is slidingly matched with described sliding sleeve; One end of described draw runner is connected with the rotating disc of throttle mechanism by a link that can stretch along its length, and an end of this draw runner also is connected with described sliding sleeve by first extension spring; Described rotating disc is provided with first reset spring that makes this rotating disc rotary reset; An air door control panel is installed in its surface by one and penetrates described Carburetor body interior and also can be sticked on described Carburetor body by rotating the axle that drives the choke plate closure or openness; Be arranged with on the described axle and make second reset spring that described air door control panel can return after rotation; Described air door control panel is lobed crooked working face towards the side of described sliding sleeve; The other end of described draw runner contacts on described crooked working face and with this crooked working face and is slidingly matched, and is under the closed condition one section parallel side that abuts in described draw runner on the described crooked working face at described choke plate; Described air door control panel is provided with the control lever that is used to make this air door control panel rotation.
In technique scheme, link can be second extension spring of elasticity coefficient greater than first extension spring, also can be an end and the pivot joint of described draw runner, the connecting plate that offers slotted hole on the other end and be connected with the rotating disc of throttle mechanism by the driving lever that passes slotted hole, link can also be for having the pull bar of certain extending amount.
As shown from the above technical solution, the present invention is simple in structure, and is easy for installation, realized when manual rotary air valve behind several angle, required closed condition when air door mechanism integral body is fixed on and starts; Behind smooth ato unit, when refueling to a certain degree, the air door self-return, thereby, simplified operation, and can prevent effectively that the engine power that causes because of operation error from descending, oil consumption is risen and problem such as discharging rising air door.
Below by the drawings and specific embodiments technological scheme of the present invention is described in detail.
Description of drawings
Fig. 1 is the structural representation of existing a kind of carburetor throttle;
Fig. 2 is the structural representation of existing another kind of carburetor throttle;
Fig. 3 is the Facad structure view of the not starting state of first embodiment of the invention;
Fig. 4 is that the A of structure embodiment illustrated in fig. 3 is to view;
Fig. 5 is the front view of middle draw runner embodiment illustrated in fig. 3;
Fig. 6 is the plan view of draw runner shown in Figure 5;
Fig. 7 is the left view of draw runner shown in Figure 5;
Fig. 8 is the front view of startup lockup state embodiment illustrated in fig. 3;
Fig. 9 is the front view in first threshold state embodiment illustrated in fig. 3;
Figure 10 is the front view in second threshold state embodiment illustrated in fig. 3;
Figure 11 is the front view behind the self-return embodiment illustrated in fig. 3;
Figure 12 is the front view of second embodiment of the invention;
Figure 13 is the front view of not starting state embodiment illustrated in fig. 12;
Figure 14 is that A embodiment illustrated in fig. 13 is to view;
Figure 15 is the first threshold state partial structurtes figure embodiment illustrated in fig. 12;
Figure 16 is another kind of air door control panel of the present invention and draw runner matching relationship schematic representation;
Figure 17 is the plan view of the telescopic lever of third embodiment of the invention;
Figure 18 is a B-B cross section view embodiment illustrated in fig. 17;
Figure 19 is the rotation plan view of not starting state embodiment illustrated in fig. 17;
Figure 20 is the partial front view of first threshold state embodiment illustrated in fig. 17.
Embodiment
Embodiment 1
As shown in Figure 3, Figure 4, the automatic resetting device for carburetor throttle of present embodiment is under starting state not, and throttle mechanism 3 and air door control panel 4 adopt the mounting type of register type Carburetors; Sliding sleeve 51 with square through hole is cast as one with Carburetor body 5; The draw runner 6 of a cylindricality is arranged in the described through hole, is slidingly matched with sliding sleeve 51; One end of draw runner 6 is connected with the rotating disc 33 of throttle mechanism 3 by second extension spring 62, and this end also the elasticity coefficient by being mounted on convex portion on it be connected with sliding sleeve 51 less than first extension spring 61 of second extension spring 62; Rotating disc 33 is provided with first torque spring 32 that makes its rotary reset; Air door control panel 4 also can be sticked on Carburetor body 5 by rotating the axle 43 that drives choke plate 41 closure or openness by being installed in its surface and penetrating Carburetor body 5 inside; Axle is arranged with on 43 and makes second torque spring 42 that air door control panel 4 can return after rotation; Air door control panel 4 is lobed crooked working face towards the side of sliding sleeve 51; Air door control panel 4 is provided with the control lever 44 that is used to make its rotation.
As Fig. 5, Fig. 6 and shown in Figure 7, be respectively the front view of draw runner 6, plan view and left view.From Fig. 5, Fig. 6 and Fig. 7 as can be known, draw runner 6 is rectangular for the column with rectangular cross-section, the cambered surface of its two ends for protruding; One end of draw runner 6 has a through hole 63, and this end also has one to have the projection of through hole 64.
From Fig. 3 and Fig. 4 as can be known, an end of first extension spring 61 is articulated on the through hole 64 of draw runner 6, and the other end is fixed on the sliding sleeve 51 by rivet 52; Elasticity coefficient is mounted on the through hole 63 of draw runner 6 greater than an end of second extension spring 62 of first extension spring 61; Air door control panel 4 is lobed crooked working face towards the side of described sliding sleeve.At starting state not, under the active force of second torque spring 42, the spacing plane P 2 of air door control panel 4 contacts with the spacing plane P 6 of sliding sleeve 51, choke plate 41 is in opens (return) state; Under the tension of first extension spring 61, the spacing plane P 8 of the cambered surface P5 of draw runner 6 and air door control panel 4 contacts; Second extension spring 62 is in free state, and draw runner 6 is not had active force.
As shown in Figure 3, the H direction is manual rotation direction, in manual mode air door control panel 4 is rotated according to manual rotation direction, and the cambered surface P5 of draw runner 6 and the cambered surface P7 of air door control panel 4 are contacted; In the ascent stage of cambered surface P7, draw runner 6 overcomes the pulling force of first extension spring 61 to diagram L direction, and promptly left-hand moves; In the descending branch of cambered surface P7, to diagram R direction, promptly dextrad moves draw runner 6 under the tension of first extension spring 61; As shown in Figure 8, after the spacing plane P 1 of the spacing plane P 3 of draw runner 6 and air door control panel 4 contacted, the reaction force of 6 pairs of air door control panels 4 of draw runner can't rotate air door control panel 4 to clockwise direction, thereby is in the startup lockup state; At this moment, air door 41 is in closed condition so that start.
As shown in Figure 9, the J direction is for refueling rotation direction, and when beginning to refuel, the rotating disc 33 of throttle mechanism 3 rotates according to the oiling rotation direction; When rotating disc 33 turns to critical angle α
1The time be in first threshold state, this moment, the pulling force of second extension spring 62 equaled the pulling force of first extension spring 61; The elasticity coefficient of cause second extension spring 62 is greater than first extension spring 61, so second extension spring 62 just can overcome the pulling force of first extension spring 61 under the minimum situation of extended length; Rotating disc 33 is rotated further, and makes the pulling force of second extension spring 62 greater than the pulling force of first extension spring 61, thereby drives draw runner 6 to diagram L direction, and promptly left-hand moves.As shown in figure 10, when rotating disc 33 according to the J direction, the rotation direction of promptly refueling turns to α
2Be in second threshold state during angle, the spacing plane P 3 of draw runner 6 and the spacing plane P 1 of air door control panel 4 no longer contact at this moment, 6 pairs of air door control panels 4 of draw runner no longer have the locking effect, to F direction shown in Figure 10, rotate by promptly free rotation direction under the active force of second torque spring 42 for air door control panel 4.
As shown in figure 11, after the spacing plane P 6 of the spacing plane P 2 of air door control panel 4 and sliding sleeve 51 contacted, the 4 no longer rotations of sliding sleeve 51 restriction air door control panels were opened (return) state thereby air door control panel 4 is in fully.
In the present embodiment, rotating disc 33 rotates critical angle α
1The deformation length of the second corresponding extension spring 62 is limit of the free travel of this spring; In the free travel scope of this limit correspondence, the pulling force that second extension spring 62 produces is equal to or less than the pulling force that first extension spring 61 produces, thereby draw runner 6 can be to L direction shown in Figure 3, and promptly left-hand moves; When the rotation angle of rotating disc 33 at α
1And α
2Between the time, draw runner 6 has begun to move to left-hand, but the spacing plane P 3 of draw runner 6 is not also left the spacing plane P 1 of air door control panel 4 fully, so air door control panel 4 still is in the startup lockup state; When the angle of rotation of rotating disc 33 greater than α
2The time, the spacing plane P 3 of draw runner 6 is left the spacing plane P 1 of air door control panel 4, thereby air door control panel 4 to F direction shown in Figure 10, the rotation of promptly free rotation direction.Therefore, this device allows to rotate throttle mechanism under the startup lockup state and refuels, as long as the angle of swing of rotating disc 33 is not more than α
2, air door control panel 4 just can self-return, has made things convenient for startup like this.
The automatic resetting device for carburetor throttle of present embodiment is simple in structure, and is easy for installation, realized when manual rotary air valve behind several angle, required closed condition when air door mechanism integral body is fixed on and starts; Behind smooth ato unit, when refueling to a certain degree, the air door self-return, thereby, simplified operation, and can prevent effectively that the engine power that causes because of operation error from descending, oil consumption is risen and problem such as discharging rising air door.
Embodiment 2
Present embodiment and embodiment's 1 difference only is to replace second extension spring 62 with connecting plate, and corresponding rotating disc in throttle mechanism has designed driving lever; And changed the shape of projection of the crooked working face of air door control panel 4.
As shown in figure 12, an end of connecting plate 7 has a through hole 71, and the other end has a slotted hole 72.
As Figure 13, shown in 14, the through hole 71 of connecting plate 7 is connected with the through hole 63 of draw runner 6 by rivet 73; Connecting plate 7 can be around rivet 73 rotations; Being equipped with one in the slotted hole 72 can be along the driving lever 34 of slotted hole 72 slips, and an end of driving lever 34 is fixed on the rotating disc 33.Aborning, rotating disc 33 projections can be bent vertically downward, form driving lever 34.
As shown in figure 15, when refueling, when rotating disc 33 according to diagram J direction, the rotation direction of promptly refueling rotates to critical angle α
3After, the working surface P9 of driving lever 34 contacts (working surface P9 and P10 are marked among Figure 13) with the working surface P10 of slip slotted hole 72, carries out plane motion thereby driving lever 34 can drive connecting plate 7; α in the present embodiment
3Corresponding to the α among the embodiment 1
1The length of the free travel of connecting plate 7 is by the decision of the length of slotted hole 72, thereby therefore can adjust the critical angle α of rotating discs 33 by adjusting slotted hole 72
3
The working procedure of the automatic resetting device of the carburetor throttle of present embodiment is identical with embodiment 1, does not repeat them here.
The connecting plate structure of present embodiment is convenient to make and is installed, and is especially starting under the lockup state, can rotate throttle mechanism and refuel so that starts, and the angle that needs only its rotation is less than or equal to the critical corner α that starts locking
3, can not impact the lockup state of air door control panel, therefore work is more reliable.The critical corner can regulate of present embodiment, but its deficiency is to make and installs relatively complexity.
In the foregoing description, the shape of the through hole of sliding sleeve 51 can be rectangle, circle or triangle; Correspondingly, the sectional shape of draw runner 6 should with the form fit of the through hole of described sliding sleeve.The crooked working face of air door control panel 4 and draw runner 6 near the end face of air door control panels 4 except being the shape in embodiment 1 and 2, it can also be other shape, as shown in figure 16, as long as guarantee that draw runner 6 can smoothly slip over, projection has the height H 1 of vertical working surface and vertical working surface greater than the height H 2 of draw runner 6 near the end face of an end of air door control panel 4 near a side of control lever 44 on projection.Second extension spring 62 among the embodiment 1 and the connecting plate 7 among the embodiment 2 also can be replaced by other links that can stretch along its length, as long as this link has certain free travel to guarantee that rotating disc is when rotating to an angle, air door control panel 4 still is in the startup lockup state, thereby convenience was refueled when starting.
Embodiment 3
Present embodiment and embodiment's 1 difference only is with second extension spring 62 among telescopic lever replacement Fig. 3.
As Figure 17 and shown in Figure 180, telescopic lever 8 comprises; A tubulose outside link 81, the both sides of an end of outside link 81 have sliding-groove 812; A draw-in bar 82, an end of draw-in bar 82 is fixed with a rivet 822, and sliding-groove 812 is passed at the two ends of rivet 822 respectively, and can slide in sliding-groove 812, thereby draw-in bar 82 can be moved in outside link 81; The end that draw-in bar 82 is positioned at outside link 81 outsides has a through hole 821; Outside link 81 has a through hole 811, and this through hole lays respectively at the two ends of telescopic lever 8 in through hole 821.
As shown in figure 19, the through hole 811 of outside link 81 and the through hole 63 of draw runner 6 are passed in cotter pin 831 successively; The through hole on the rotating disc 33 and the through hole 821 of draw-in bar 82 are passed in cotter pin 832 successively; The two ends of telescopic lever 8 respectively can be around cotter pin 831 and 832 rotations.
As shown in figure 20, when refueling, when rotating disc 33 according to diagram J direction, the rotation direction of promptly refueling rotates to critical angle α
4After, the working surface P11 of outside link 81 as shown in figure 18 and the working surface P12 of rivet 822 contact, thus rotating disc 33 can drive draw runner 6 to diagram L direction by driving telescopic lever 8 motions, and promptly left-hand moves.The length of the free travel of telescopic lever 8 is by the decision of the length of sliding-groove 812, therefore can adjust the critical angle α of rotating disc 33 by the length of adjusting sliding-groove 812
4
The working procedure of the automatic resetting device for carburetor throttle of present embodiment is identical with embodiment 1, does not repeat them here.
The telescopic lever mechanism structure of present embodiment is more reliable, has guaranteed the reliability and the accuracy of work.Under starting state, can rotate throttle mechanism and refuel so that start, as long as the angle of its rotation is less than the critical corner α that starts locking
4, can not impact the lockup state of air door mechanism.The critical corner α of the locking of present embodiment
4Can regulate, but its deficiency is to make and installs relatively complexity.
Should be noted that at last: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field should be appreciated that still and can make amendment or the part technical characteristics is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope that the present invention asks for protection.