CN216788564U

CN216788564U - Carburetor

Info

Publication number: CN216788564U
Application number: CN202220385715.3U
Authority: CN
Inventors: 万青源
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-06-21
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to a carburetor, which comprises a carburetor body and a choke valve, wherein the choke valve is rotationally connected with the carburetor body through a rotating shaft, the carburetor body is connected with a driving motor for driving the rotating shaft to rotate, the rotating shaft is provided with a first limiting part and a second limiting part in a linkage manner, the carburetor body is slidably connected with a first driving part which is matched with the first limiting part and drives the rotating shaft to drive the choke valve to close, the carburetor body is also slidably connected with a second driving part which is matched with the second limiting part and drives the rotating shaft to drive the choke valve to open, and the carburetor body is provided with an operating mechanism for manually controlling the first driving part and the second driving part to slide. The problem that the carburetor can not automatically control the choke valve to be used in the prior art is solved.

Description

Carburetor

Technical Field

The present invention relates to a carburetor.

Background

The carburetor is a common part on a gasoline engine, a choke valve for controlling air inflow is arranged on the carburetor, when the engine is started, the concentration of mixed gas entering an engine cylinder is adjusted by controlling the opening angle of the choke valve so as to improve the starting performance of the engine, and after the engine is started successfully, the concentration of the mixed gas is reduced to the concentration in a running state by completely opening the choke valve, so that the engine runs normally. With the popularization of the existing electric control technology, the opening and closing of the choke valve are gradually controlled automatically by adopting an electric driving mechanism. Under some special conditions, when the electric driving mechanism for controlling the opening and closing of the choke valve cannot normally control the choke valve due to power shortage or electronic equipment failure, the carburetor cannot normally work, and the normal use of the engine is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a carburetor to solve the problem that a carburetor in the prior art cannot be used when a choke valve cannot be automatically controlled.

In order to achieve the above object, a basic solution of the present invention provides a carburetor, which includes a carburetor body and a choke valve, wherein the choke valve is rotatably connected to the carburetor body through a rotating shaft, the carburetor body is connected to a driving motor for driving the rotating shaft to rotate, the rotating shaft is provided with a first limiting member and a second limiting member in a linkage manner, the carburetor body is slidably connected to a first driving member which is engaged with the first limiting member to drive the rotating shaft to drive the choke valve to close, the carburetor body is further slidably connected to a second driving member which is engaged with the second limiting member to drive the rotating shaft to drive the choke valve to open, and the carburetor body is provided with an operating mechanism for manually controlling the first driving member and the second driving member to slide.

The beneficial effect of this basic scheme lies in: when the driving motor can drive the rotating shaft to drive the choke valve to open and close, the driving motor is adopted for operation; when the driving motor can not drive the choke valve to act, the manual control operating mechanism is adopted to drive the first driving piece and the second driving piece to slide, the choke valve is closed through the cooperation of the first driving piece and the first limiting piece, the choke valve is opened through the cooperation of the second driving piece and the second limiting piece, the manual control of the choke valve is realized, the choke valve of the carburetor can be automatically controlled and manually controlled, and the condition that the carburetor cannot be normally used due to the fact that the carburetor cannot be automatically controlled is avoided.

Further, the carburetor body includes a support bracket, and the first driving member and/or the second driving member are slidably connected to the support bracket. By adopting the arrangement, the processing and the manufacturing are convenient.

Further, the first limiting part and the second limiting part are distributed along the axial direction of the rotating shaft in a staggered mode. By adopting the arrangement, the movement spaces required by the first limiting part and the second limiting part are staggered, so that the occurrence of mutual interference is reduced, and the improvement of the reliability of operation is facilitated.

Further, the first limiting part and the second limiting part are both fixedly connected with the rotating shaft. By adopting the arrangement, the structure is simpler, and the manufacturing cost is reduced.

Further, the second driving piece comprises a connecting portion in sliding fit with the carburetor body and a driving portion used for being matched with the second limiting piece, the driving portion and the connecting portion are connected to form a pawl structure matched with the second limiting piece, and the second limiting piece is provided with a combining portion in clutch fit with the driving portion. With the arrangement, when the driving part is combined with the combining part of the second limiting part through the movement of the second driving part, the second driving part can drive the second limiting part to move, so that manual control is realized; when the combination part of the second limiting part is separated from the driving part, the second limiting part can move relative to the second driving part, so that the interference of the second driving part on the second limiting part when the driving motor drives the rotating shaft to rotate is reduced.

Furthermore, the driving part is elastically connected with the connecting part, so that one end of the driving part, which is in contact with the second limiting part, can generate displacement along the sliding direction perpendicular to the connecting part. By adopting the arrangement, the driving part is matched with the second limiting part under the action of the elastic force, so that the structure is simplified.

Further, the driving part is a torsion spring. With such an arrangement, further simplification of the structure is facilitated.

Furthermore, the first driving piece is fixedly connected with the second driving piece. With such an arrangement, further simplification of the structure is facilitated.

Furthermore, a return spring is arranged between the first driving piece and/or the second driving piece and the carburetor body. By adopting the arrangement, the first driving piece and the second driving piece can be reset through the reset spring after changing positions under the action of the operating mechanism, so that the structure is simplified, and the operation is convenient.

Further, fixedly connected with guide rail on the support frame, the equal sliding sleeve of first driving piece and second driving piece is on the guide rail, reset spring suit is on the guide rail. By adopting the arrangement, the sliding arrangement of the first driving piece and the second driving piece on the carburetor body is convenient, and the manufacture is convenient.

Drawings

FIG. 1 is a schematic view of an embodiment 1 of a carburetor of the present invention;

FIG. 2 is a cross-sectional view of the first and second driving members of the present invention in an initial position;

FIG. 3 is a cross-sectional view of the first drive member of the present invention with the choke valve in a closed position;

FIG. 4 is a schematic view of the second driving member of FIG. 2 in an initial position;

FIG. 5 is a schematic view illustrating the first driving member driving the first position limiter in FIG. 3;

FIG. 6 is a schematic view illustrating the second driving element driving the second position limiting element;

FIG. 7 is a schematic view of the carburetor of embodiment 2 of the present invention with the second driver in the initial position;

fig. 8 is a schematic view illustrating a first driving element driving a first position limiter according to embodiment 2 of the present invention;

fig. 9 is a schematic view illustrating the second driving element driving the second position limiter according to embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the carburetor comprises a carburetor body 1, a choke valve 2, a drive motor 3, a rotating shaft 4, a second limiting part 5, a combining part 51, a first limiting part 6, a support frame 7, a first driving part 8, a shifting block part 81, a second driving part 9, a driving part 91, a connecting part 92, an operating mechanism 11, a guide rail 12 and a return spring 13.

Example 1: substantially as shown in figures 1 to 6 of the accompanying drawings: the utility model provides a carburetor, includes carburetor body 1 and choke valve 2, and choke valve 2 rotates through pivot 4 and carburetor body 1 to be connected, is connected with on the carburetor body 1 to be used for driving 4 pivoted driving motor 3 of pivot, specifically, for manufacturing's convenience, carburetor body 1 includes detachable support frame 7, and driving motor 3 installs on support frame 7, drives opening and closing that the pivot 4 realized choke valve 2 through driving motor 3 to realize carburetor choke valve 2's automatic control. The rotating shaft 4 is provided with a first limiting member 6 and a second limiting member 5 in a linkage manner, in this embodiment, the first limiting member 6 and the second limiting member 5 are preferably fixedly connected to the rotating shaft 4, so that the first limiting member 6 and the second limiting member 5 form an overhanging structure extending along the radial direction of the rotating shaft 4, and the first limiting member 6 and the second limiting member 5 are distributed along the axial direction of the rotating shaft 4 in a staggered manner. For convenience of manufacturing, the first limiting member 6 and the second limiting member 5 in this embodiment are preferably integrally formed.

The carburetor body 1 is slidably connected with a first driving member 8 which is matched with the first limiting member 6 to drive the rotating shaft 4 to drive the choke valve 2 to be closed, in this embodiment, preferably, the first driving member 8 is provided with a shifting block portion 81 extending in a direction perpendicular to the sliding direction, and the shifting block portion 81 is made to contact with the first limiting member 6 through the movement of the first driving member 8 to shift the first limiting member 6 to rotate, so that the rotating shaft 4 drives the choke valve 2 to rotate, and the closing operation of the choke valve 2 is realized. In this embodiment, the first driving member 8 is preferably slidably fitted to the carburetor body 1 in the following manner: a guide rail 12 is fixedly connected to the support frame 7, and the first driving piece 8 is slidably sleeved on the guide rail 12 to realize sliding fit with the carburetor body 1.

The carburetor body 1 is further slidably connected with a second driving member 9 which is matched with the second limiting member 5 to drive the rotating shaft 4 to drive the choke valve 2 to open, in this embodiment, the second driving member 9 includes a connecting portion 92 which is in sliding fit with the carburetor body 1 and a driving portion 91 which is used for being in contact with the second limiting member 5, the driving portion 91 is connected with the connecting portion 92 to form a pawl structure matched with the second limiting member 5, the second limiting member 5 has a combining portion 51 which is in clutch fit with the driving portion 91, when the driving portion 91 and the combining portion 51 are in a separated state, the driving portion 91 cannot drive the second limiting member 5 to rotate through the combining portion 51, so that the second limiting member 5 and the second driving member 9 can move relatively; when the driving portion 91 and the combining portion 51 are in a combining state, the driving portion 91 can drive the second limiting member 5 to rotate through the combining portion 51, so that the operation of opening the choke valve 2 by the rotation shaft 4 is realized. In this embodiment, the driving portion 91 and the connecting portion 92 are elastically connected to achieve the reset of the driving portion 91 after moving along the direction perpendicular to the sliding direction of the connecting portion 92, and preferably, the displacement direction of the driving portion 91 under the elastic action is parallel to the axial direction of the rotating shaft 4, when the first driving member 8 drives the rotating shaft 4 to rotate through the first limiting member 6, the second limiting member 5 also rotates along with the rotating shaft 4, at this time, the driving portion 91 contacts with the second limiting member 5 and performs yielding deformation under the elastic action, for example, an inclined guide surface is disposed at the top of the second limiting member 5, the driving portion 91 first contacts with the guide surface of the second limiting member 5, so that the driving portion 91 performs yielding deformation under the action of the guide surface, thereby avoiding the mutual interference between the second limiting member 5 and the second driving member 9 when the driving portion 91 and the connecting portion 51 are in the separation state, and thus enabling the driving portion 91 to achieve the cut from the separation state to the connection state with the connecting portion 51 in a smaller stroke range Changing; for example, a torsion spring is used as the driving portion 91.

In this embodiment, the connecting portion 92 includes a pin and a pin mounting seat, the pin mounting seat is integrally formed with the first driving member 8, the driving portion 91 is mounted by the pin, and the pin mounting seat slides along the guide rail 12 along the first driving member 8, so that the first driving member 8 and the second driving member 9 are synchronously moved, and the structure is simplified. Of course, the pin shaft mounting seat of the connecting portion 92 may also be separately connected to the guide rail 12 in a sliding manner, so that the connecting portion 92 is connected to the support frame 7 in a sliding manner through the guide rail 12, and the second driving member 9 is connected to the support frame 7 in a sliding manner. The carburetor body 1 is provided with an operating mechanism 11 for manually controlling the sliding of the first driving member 8 and the second driving member 9, the operating mechanism 11 is similar to a clutch wire structure in the prior art, and one end of the operating mechanism 11 is fixedly connected with the first driving member 8, so that the sliding of the first driving member 8 and the second driving member 9 can be realized by manually pulling the operating mechanism 11. A return spring 13 is provided between the carburetor body 1 and the first driver 8, and the direction of the spring force of the return spring 13 is opposite to the direction of the biasing force of the operating mechanism 11, but in this embodiment, the return spring 13 is preferably fitted around the guide rail 12.

The specific implementation process is as follows: under the condition that need not manual control operating device 11, first driving piece 8 and second driving piece 9 are in initial position under reset spring 13's effect, at this moment, between first driving piece and the first locating part, all be in the separation state between second driving piece and the second locating part, thereby make pivot 4 can not receive the restriction of first driving piece and second driving piece and be driven rotatoryly by driving motor 3, thereby make pivot 4 drive choke valve 2 carry out the operation opened and closed, and then realize choke valve 2's automatic control.

When the driving motor 3 cannot work normally, the choke valve 2 may be at any position, and the combining portion 51 of the second limiting member 5 and the driving portion 91 of the second driving member 9 are separated. When the choke valve 2 needs to be closed to start the engine, the manual control operating mechanism 11 drives the first driving part 8 and the second driving part 9 to move (the direction indicated by the arrow in the figure is the moving direction of the first driving part and the second driving part), so that the first driving part 8 drives the rotating shaft 4 to rotate by pushing the first locating part 6 in the moving process, and the rotating shaft 4 drives the choke valve 2 to be closed, thereby facilitating the starting operation of the engine.

When the choke valve 2 needs to be partially opened (relative to the fully opened state of the choke valve, the opening angle of the choke valve is smaller) for starting, the choke valve 2 is in a closed state by manually controlling the operating mechanism 11, the return spring 13 is compressed and deformed, meanwhile, as the second driving member 9 and the second limiting member 5 move relatively, the driving part 91 of the second driving member 9 and the combining part 51 of the second limiting member 5 are changed from a separated state to a combined state, then the force application effect of the operating mechanism 11 on the first driving member 8 and the second driving member 9 is reduced, the return spring 13 pushes the first driving member 8 and the second driving member 9 to move towards the initial position, the displacement of the first driving member 8 and the second driving member 9 can timely reflect to the control stroke of the operating mechanism 11 (such as the moving distance of the pulling end of the pulling wire in the prior art), in the process that the second driving member 9 moves toward the initial position, the driving portion 91 of the second driving member 9 drives the second limiting member 5 to rotate the rotating shaft 4 through the combining portion 51, so that the rotating shaft 4 drives the choke valve 2 to open and rotate, and the opening angle of the choke valve 2 can be controlled by controlling the control stroke of the operating mechanism 11, so that the engine is started by partially opening the choke valve 2.

When the choke valve 2 needs to be opened and closed repeatedly for starting, make the choke valve 2 close the back through control operating device 11, then reduce operating device 11 to the application of force effect of first driving piece 8 and second driving piece 9, make reset spring 13 promote first driving piece 8 and second driving piece 9 and get back to initial position, thereby make the drive division 91 of second driving piece 9 make second locating part 5 drive pivot 4 through joint portion 51 and rotate, make pivot 4 drive choke valve 2 open, then repeat above-mentioned operation, thereby realize opening repeatedly and closing of choke valve and start the engine. By adopting the scheme, the carburetor has two control modes of automatic control and manual control, so that the condition that the carburetor cannot be normally used under some special conditions is avoided.

Example 2: the only difference from example 1 is that: as shown in fig. 7 to 9, the driving portion 91a of the second driving member 9 is a claw-like structure elastically connected to the connecting portion, and is engaged with and disengaged from the coupling portion 51 of the second limiting member 5 by the elasticity of the claw-like structure itself.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a carburetor, includes carburetor body and choke valve, the choke valve rotates with the carburetor body through the pivot to be connected, be connected with on the carburetor body and be used for driving pivot pivoted driving motor, its characterized in that: the carburetor comprises a carburetor body, a choke valve and a rotating shaft, and is characterized in that the rotating shaft is provided with a first limiting part and a second limiting part in a linkage manner, the carburetor body is connected with a first driving part which is matched with the first limiting part and drives the rotating shaft to drive the choke valve to close, the carburetor body is further connected with a second driving part which is matched with the second limiting part and drives the rotating shaft to drive the choke valve to open, and the carburetor body is provided with an operating mechanism for manually controlling the first driving part and the second driving part to slide.

2. A carburetor according to claim 1, wherein: the carburetor body comprises a support frame, and the first driving piece and/or the second driving piece are/is connected with the support frame in a sliding mode.

3. A carburetor according to claim 2, wherein: the first limiting piece and the second limiting piece are distributed along the axial direction of the rotating shaft in a staggered mode.

4. A carburetor according to claim 3, wherein: the first limiting piece and the second limiting piece are both fixedly connected with the rotating shaft.

5. A carburettor according to claim 4 wherein: the first limiting part and the second limiting part are integrally formed.

6. A carburettor according to any one of claims 2 to 5 wherein: the second driving piece comprises a connecting portion and a driving portion matched with the second limiting piece, the connecting portion is connected with the supporting frame in a sliding mode, the driving portion is connected with the connecting portion to form a pawl structure matched with the second limiting piece, and the second limiting piece is provided with a combining portion matched with the driving portion in a clutch mode.

7. A carburettor according to any one of claims 2 to 5 wherein: the second driving piece comprises a connecting portion and a driving portion used for being matched with the second limiting piece, the connecting portion is fixedly connected with the first driving piece, the driving portion is connected with the connecting portion to form a pawl structure matched with the second limiting piece, and the second limiting piece is provided with a combining portion matched with the driving portion in a clutch mode.

8. A carburettor according to claim 6 wherein: the driving part is elastically connected with the connecting part, so that one end of the driving part, which is in contact with the second limiting part, can generate displacement along the sliding direction perpendicular to the connecting part.

9. A carburetor according to claim 7, wherein: the driving part is elastically connected with the connecting part, so that one end of the driving part, which is in contact with the second limiting part, can generate displacement along the sliding direction perpendicular to the connecting part.

10. A carburettor according to claim 8 or 9 wherein: the driving part is a torsion spring.

11. A carburettor according to claim 8 or 9 wherein: and a return spring is arranged between the first driving piece and/or the second driving piece and the carburetor body.

12. A carburetor according to claim 10, wherein: and a return spring is arranged between the first driving piece and/or the second driving piece and the carburetor body.

13. A carburetor according to claim 11, wherein: the support frame is fixedly connected with a guide rail, the first driving piece and the second driving piece are sleeved on the guide rail in a sliding mode, and the reset spring is sleeved on the guide rail.

14. A carburetor according to claim 12, wherein: the support frame is fixedly connected with a guide rail, the first driving piece and the second driving piece are sleeved on the guide rail in a sliding mode, and the reset spring is sleeved on the guide rail.