CN209163957U - The mechanism of carburetter choke and air throttle linkage is realized using heat of engine - Google Patents

Abstract

The utility model discloses a kind of mechanisms that carburetter choke and air throttle linkage are realized using heat of engine, comprising: the first rocker arm and the second rocker arm of the shaft end of the overhanging carbureter body of Air strangler spindle is arranged in；The third rocker arm of the shaft end of the overhanging carbureter body of throttle plate pin is set；Draw back plate, draw back plate one end are hinged on carbureter body, and the other end is stirred with the first rocker arm and connect；Driving portion, driving portion are arranged on carbureter body, and the driving end of driving portion is fixedly connected at its articulated position with draw back plate；And connecting rod is stirred, it stirs and is rotatably connected on carbureter body in the middle part of connecting rod, and positioned at the second rocker arm and third rocker arm between, stir connecting rod both ends and connect respectively with the second rocker arm and third rocker arm one-to-one correspondence and stirring.The linkage mechanism can be realized the linkage that choke and air throttle open and close, to ensure the requirement of the carburetor more intelligent hot and cold machine starting of realization under various circumstances.

Description

The mechanism of carburetter choke and air throttle linkage is realized using heat of engine

Technical field

The utility model relates to Manufacturing Technology for Carburetors fields, more particularly to a kind of to utilize heat of engine realizationization The mechanism of oily device choke and air throttle linkage.

Background technique

Carburetor is the machinery that mixes with air a certain proportion of gasoline under the vacuum action that engine operation generates Device.Specifically, carburetor can go out corresponding concentration, output phase according to the different working condition demand of engine, automatic mixing The gaseous mixture for the amount answered, relatively uniform in order to mix the gaseous mixture allotted, carburetor is also equipped with the effect for making fuel-oil atmozation, For machine normal operation.It can be referred to as " heart " of engine to the important function of engine.Its complete device is answered Including starting device, idling device, moderate duty device, full load device, accelerator.

Currently, just having started startup stage all in engine needs with manual simultaneous with the carburetor of choke and air throttle Handle rotates Air strangler spindle rocker arm and closes choke reduction air capacity, plays enriching mixer convenient for the purpose of starting；Engine Also need manual handle rotation choke rocker arm that choke is opened to and is in fully open position, air throttle after engine start after starting Ensure that engine operation is normal in fully open position.

Generally there are two types of modes for the opening and closing of choke and air throttle: one kind is that choke passes through manual operation, section Valve is governor system control operation, and choke and air throttle individually control, wherein governor system control air throttle is By the throttle combination control with handle and governor system control while Operation switch, high low speed control is realized, it is cold in engine When machine starts, choke is closed, full throttle is conducive to engine start, but user need to operate choke door handle and oil respectively Door combination handle, operation are extremely inconvenient；Another way installation stepper motor on Air strangler spindle and throttle plate pin hinders to control The open and close of air door and air throttle.But should structure is complicated, need stepper motor mounting bracket and upper cover, start simultaneously It needs that more complicated circuit control system is arranged in machine structure, so that the monomer higher cost of whole engine and carburetor.

Therefore, it is simple and be easily achieved the closing of carburetter choke and air throttle and open how to provide a kind of structure Linkage mechanism, to ensure the requirement of the carburetor hot and cold machine starting of more intelligent realization under various circumstances；The linkage mechanism It realizes, can make it possible that operator is actuated for remote intelligent control to engine.Therefore, which is this field The problem of technical staff's urgent need to resolve.

Utility model content

In view of this, the present invention provides a kind of using temperature on cylinder head when engine start, is conducted by heat Paraffin dilating principle, the simple pushing mechanism of design structure, to realize the closing and unlatching of carburetter choke and air throttle Linkage, to ensure the requirement of the carburetor hot and cold machine starting of more intelligent realization under various circumstances.

To achieve the goals above, the utility model adopts the following technical solution:

It is a kind of using heat of engine realize carburetter choke and air throttle linkage mechanism, wherein carburetor with it is general Miniature gasoline engine engine connection, choke be arranged on Air strangler spindle, air throttle be arranged on throttle plate pin, Air strangler spindle and Throttle plate pin is rotated and is located on carbureter body, comprising:

First rocker arm, the second rocker arm, first rocker arm and second rocker arm with the overhanging carburetion of the Air strangler spindle The shaft end of device shell is vertically fixedly connected, and second rocker arm and first rocker arm are arranged up and down；

Third rocker arm, the third rocker arm is vertical with the shaft end of the overhanging carbureter body of the throttle plate pin to be fixedly connected；

Draw back plate, described draw back plate one end are hinged on carbureter body, and the other end is stirred with first rocker arm and connect；

It is fixedly connected with the engine cylinder head and the driving portion to drive the draw back plate to swing, the driving portion is set It sets on carbureter body, the driving end of the driving portion is fixedly connected at its articulated position with draw back plate；And

Stir connecting rod, described stir is rotatably connected on carbureter body in the middle part of connecting rod, and is located at described the Between two rocker arms and the third rocker arm, it is described stir connecting rod both ends respectively with second rocker arm and the third rocker arm one One corresponds to and stirs connection.

It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, a kind of utilizes engine thermal Amount realizes the mechanism of carburetter choke and air throttle linkage, drives the first rocker arm, the second rocker arm, third rocker arm by driving portion And linkage between connecting rod is stirred, realize the closing and unlatching of choke and air throttle, the linkage mechanism is simple, at low cost It is honest and clean, and be easily achieved.

Further, first rocker arm includes:

Connecting plate, the one end of the connection board is vertical with the shaft end of the overhanging carbureter body of the Air strangler spindle to be fixedly connected, And it is located at the lower section of second rocker arm；

Straight pin, the straight pin are arranged vertically with the connecting plate and are fixedly connected with its other end, the straight pin Upper end stir and connect with the draw back plate other end.

Further, the driving portion includes: the first driving portion and the second driving portion being arranged on carbureter body, The driving end of first driving portion is abutted with one end of the actuator on second driving portion, the other end of actuator and institute Draw back plate is stated to be fixedly connected at its articulated position.

Further, first driving portion includes: to be arranged on carbureter body and fix with the engine cylinder head The connector of connection, the connector are cavity structure, are filled in the hollow cavity close to the side of the engine cylinder head Have paraffin, and the paraffin and engine cylinder head heat transfer connect, the other side is provided with mandril, described mandril one end with it is described Paraffin abuts, and the other end is abutted with one end of the actuator on second driving portion.Paraffin is thermal expansion part, when starting When the heat transfer of machine is to paraffin, paraffin expanded by heating pushes mandril to move in hollow cavity, then pushes the second driving portion dynamic Make.

Further, second driving portion includes: the limit sleeve being arranged on the carbureter body, the limit sleeve With an accommodating chamber, retaining ring and spring are provided in the accommodating chamber；

Push rod, described push rod one end are threaded through in the accommodating chamber, and are fixedly connected through the retaining ring with the retaining ring, And the end is abutted with the mandril other end, the push rod other end stretches out the accommodating chamber and with the draw back plate close to it It is fixedly connected at articulated position；

Wherein, the spring pocket is provided on the push rod in the accommodating chamber, and the spring one end and the receiving The inner sidewall of chamber abuts, and the other end is abutted with a side end face of the retaining ring.

In the technical solution, mandril pushes push rod that the elastic force of spring is overcome to move, and then pushes draw back plate rotation.

Further, the push rod includes:

Straight-bar, described straight-bar one end are threaded through in the accommodating chamber, and are fixedly connected through the retaining ring with the retaining ring, And the end is abutted with the mandril other end, and the spring is arranged on the straight-bar, described in the straight-bar other end exposing Accommodating chamber；

Bent rod, described bent rod one end and the straight-bar other end integrally connected, the bent rod other end with it is described Draw back plate is fixedly connected at its articulated position.

Further, the draw back plate offers limit hole at its articulated position, and the bent rod is far from described straight One end of bar is hook-shaped, described to be articulated in the limit hole, by the bent rod and the fixed company of the draw back plate It connects.

Further, the spring is tower-shaped spring.Tower-shaped spring has that small in size, load is big, variation rigidity, is widely used in The occasion that space is small, load is big, and its good damping effect.

It further, further include the column being arranged on carbureter body, it is described to stir connecting rod middle part and the column Upper end rotation connection；

Torsional spring, the torsional spring are set on the column, and the one end of torsional spring is fixed on the column, and the other end is fixed In the lower surface for stirring connecting rod.

Further, the third rocker arm and the contact surface for stirring connecting rod are arcwall face so that third rocker arm with Stir between connecting rod stirring connection it is more stable.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 attached drawing is that a kind of utilization heat of engine provided by the utility model realizes carburetter choke and the solar term couplet on the door The partial sectional view of dynamic mechanism.

Fig. 2 attached drawing is the overlooking structure diagram of Fig. 1 attached drawing.

Fig. 3 attached drawing is the axis side structure schematic diagram of Fig. 1 attached drawing.

Wherein:

1- Air strangler spindle, the first rocker arm of 11-, 111- connecting plate, 112 straight pins, the second rocker arm of 12-, 2- throttle plate pin, 21- third rocker arm, 3- draw back plate, 4- driving portion, the first driving portion of 41-, 411- connector, 412- paraffin, 413- mandril, 42- Second driving portion, 421- limit sleeve, 422- retaining ring, 423- spring, 424- push rod, 4241- straight-bar, 4242- bent rod, 5- are stirred Connecting rod, 6- column.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1-3, the utility model embodiment disclose it is a kind of using heat of engine realize carburetter choke with The mechanism of air throttle linkage, wherein carburetor is connect with general small-size gasoline engine engine, and choke is arranged in Air strangler spindle 1 On, air throttle is arranged on throttle plate pin 2, and Air strangler spindle 1 and throttle plate pin 2 are rotated and be located on carbureter body, feature It is, comprising:

First rocker arm 11, the second rocker arm 12, the first rocker arm 11 and the second rocker arm 12 with the overhanging carburetor shell of Air strangler spindle 1 The shaft end of body is vertically fixedly connected, and the second rocker arm 12 and the first about 11 rocker arm arrangement；

Third rocker arm 21, third rocker arm 21 is vertical with the shaft end of the overhanging carbureter body of throttle plate pin 2 to be fixedly connected；

Draw back plate 3,3 one end of draw back plate are hinged on carbureter body, and the other end is stirred with the first rocker arm 11 and connect；

It is fixedly connected with engine cylinder head and the driving portion 4 to drive draw back plate 3 to swing, driving portion 4 is arranged in carburetion On device shell, the driving end of driving portion 4 is fixedly connected at its articulated position with draw back plate 3；And

Connecting rod 5 is stirred, stirs and is rotatably connected on carbureter body in the middle part of connecting rod 5, and is located at the second rocker arm Between 12 and third rocker arm 21, stirs 5 both ends of connecting rod and correspond and stir with the second rocker arm 12 and third rocker arm 21 respectively Connection.

It should be noted that in order to make third rocker arm 21 and stir between connecting rod 5 stirring connection it is more stable, therefore, Third rocker arm 21 and the contact surface for stirring connecting rod 5 are preferably arcwall face.

Wherein, the first rocker arm 11 includes:

Connecting plate 111, described 111 one end of connecting plate fixed company vertical with the shaft end of the overhanging carbureter body of Air strangler spindle 1 It connects, and is located at the lower section of the second rocker arm 12；

Straight pin 112, straight pin 112 are arranged vertically with connecting plate 111 and are fixedly connected with its other end, straight pin 112 Upper end stir and connect with 3 other end of draw back plate.

The structure of driving portion in the utility model is as follows:

Driving portion 4 includes: the first driving portion 41 and the second driving portion 42 being arranged on carbureter body, the first driving The driving end in portion 41 is abutted with one end of the actuator on the second driving portion 42, and the other end and draw back plate 3 of actuator are close to it It is fixedly connected at articulated position.

Specifically, the first driving portion 41 includes: the company for being arranged on carbureter body and being fixedly connected with engine cylinder head Fitting 411, connector 411 are cavity structure, and the side of close engine cylinder head is filled with paraffin 412, and stone in hollow cavity Wax 412 and engine cylinder head heat transfer connect, and the other side is provided with mandril 413, and 413 one end of mandril is abutted with paraffin 412, the other end It is abutted with one end of the actuator on the second driving portion 42.

Second driving portion 42 includes: the limit sleeve 421 being arranged on carbureter body, and limit sleeve 421 has an accommodating chamber, Retaining ring 422 and spring 423 are provided in accommodating chamber；

Push rod 424,424 one end of push rod are threaded through in accommodating chamber, and are fixedly connected through retaining ring 422 with retaining ring 422, and should End is abutted with 413 other end of mandril, and 424 other end of push rod stretches out accommodating chamber and consolidates at its articulated position with draw back plate 3 Fixed connection；

Wherein, spring 423 is set on the push rod 424 in accommodating chamber, and the inside of spring 424 one end and accommodating chamber Wall abuts, and the other end is abutted with a side end face of retaining ring 422.Preferably, spring 423 is tower-shaped spring.

In order to optimize above-mentioned technical proposal, push rod 424 includes:

Straight-bar 4241,4241 one end of straight-bar are threaded through in accommodating chamber, and are fixedly connected through retaining ring 422 with retaining ring 422, and The end is abutted with 413 other end of mandril, and sheathed spring 423 on straight-bar 4241, and 4241 other end of straight-bar exposes the receiving Chamber；

Bent rod 4242,4242 one end of bent rod and 4241 other end integrally connected of straight-bar, 4242 other end of bent rod with Draw back plate 3 is fixedly connected at its articulated position.

In order to optimize above-mentioned technical proposal, draw back plate 3 offers limit hole at articulated position, and bent rod 4242 is separate One end of straight-bar 4241 is hook-shaped, is articulated in limit hole, bent rod 4242 is fixedly connected with draw back plate 3.

The utility model additionally provides a little embodiments, further includes the column 6 being arranged on carbureter body, stirs connecting rod 5 middle parts are rotatablely connected with 6 upper end of column；

Torsional spring (not shown), torsional spring are set on column 6, and one end of torsional spring is fixed on column 6, and the other end, which is fixed on, to be stirred The lower surface of connecting rod 5.

The working principle of the utility model linkage mechanism:

State 1, the non-working condition of engine:

When the engine is not in operation, the choke being mounted on the Air strangler spindle on carburetor, in Air strangler spindle torsional spring Under elastic force effect, it is in close state, stirs connecting rod and do not contacted under the action of torsional spring with the second rocker arm, meanwhile, because starting Machine does not work, and engine cylinder head empty calory generates, and heat transfer would not be generated between paraffin and engine cylinder head, paraffin is not in Swelling state, linkage mechanism are failure to actuate.

State 2, engine behavior:

When drawing engine rope starting engine manually, it is mounted on throttle plate pin component inner hole speed regulation pull rod and speed regulation is drawn Spring (existing structure) pulls throttle plate pin component rotation air throttle to be under 60%-65% aperture working condition, and third is shaken at this time Arm is rotationally clockwise and connecting rod rotation is stirred in promotion, stirs the connecting rod other end and rotates counterclockwise the second rocker arm of contact i.e. Air strangler spindle is rotated, choke is made to be in the aperture of 65%-75%；At this moment engine is in running order, engine spark plug Cylinder head spot temperature higher heat will be transmitted to the paraffin in connector, at this point, paraffin expanded by heating, pushes mandril elongation, And then the elastic force for pushing push rod to overcome tower spring acts on movement, push rod pushes draw back plate to rotate again, and stirs on the first rocker arm Straight pin rotation, complete that choke is made to be in the position of standard-sized sheet in 30 seconds.It should be noted that engine is in work shape State, paraffin are constantly in swelling state, and draw back plate with the cylinder pin contacts on the first rocker arm, is constantly in choke entirely always Open state.

State 3 closes engine condition:

When closing engine, under the action of the speed regulation pull rod and speed governing tension spring push-and-pull on throttle plate pin, air throttle is pushed Air throttle on axis is in the state of standard-sized sheet, and the third rocker arm on throttle plate pin is disengaged with connecting rod is stirred at this time, makes to dial Dynamic connecting rod rotates clockwise an angle under the action of itself torsional spring, makes to stir connecting rod and does not contact with the second rocker arm.But because The temperature that engine has just shut down cylinder head is hotter, and paraffin is still in swelling state, Air strangler spindle under the residual temperature effect of engine On choke be also constantly in fully open position, when until engine cylinder head without temperature, paraffin does not expand, in interior tower spring Under reseting elasticity effect, retaining ring pushes mandril to return to original initial position.

The utility model it is a kind of using engine start when cylinder head on temperature, by heat conduction paraffin dilating principle, The simple pushing mechanism of design structure, the closing to realize carburetter choke and air throttle and the linkage mechanism opened, with true Protect the requirement of the carburetor hot and cold machine starting of more intelligent realization under various circumstances；The structure is simple, reliable, easy, can be real Existing intelligence demand.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part It is bright.

The foregoing description of the disclosed embodiments, the utility model are not intended to be limited to these implementations shown in this article Example, and it is to fit to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. it is a kind of using heat of engine realize carburetter choke and air throttle linkage mechanism, wherein carburetor with it is general small The connection of type gasoline engine engine, choke are arranged on Air strangler spindle (1), and air throttle is arranged on throttle plate pin (2), choke Axis (1) and throttle plate pin (2), which rotate, to be located on carbureter body characterized by comprising

First rocker arm (11), the second rocker arm (12), first rocker arm (11) and second rocker arm (12) with the choke The shaft end of door-hinge (1) overhanging carbureter body is vertically fixedly connected, and second rocker arm (12) and first rocker arm (11) Arrangement up and down；

Third rocker arm (21), the third rocker arm (21) are vertical with the shaft end of the throttle plate pin (2) overhanging carbureter body solid Fixed connection；

Draw back plate (3), described draw back plate (3) one end are hinged on carbureter body, and the other end and first rocker arm (11) are dialled Dynamic connection；

Be fixedly connected with engine cylinder head and to drive the draw back plate (3) swing driving portion (4), the driving portion (4) It is arranged on carbureter body, the driving end of the driving portion (4) is fixedly connected at its articulated position with draw back plate (3)； And

It stirs connecting rod (5), described stir is rotatably connected on carbureter body in the middle part of connecting rod (5), and is located at described Between second rocker arm (12) and the third rocker arm (21), it is described stir connecting rod (5) both ends respectively with second rocker arm (12) it corresponds with the third rocker arm (21) and stirs connection.

2. a kind of machine of linkage for realizing carburetter choke and air throttle using heat of engine according to claim 1 Structure, which is characterized in that first rocker arm (11) includes:

Connecting plate (111), described connecting plate (111) one end are vertical with the shaft end of the Air strangler spindle (1) overhanging carbureter body It is fixedly connected, and is located at the lower section of second rocker arm (12)；

Straight pin (112), the straight pin (112) are arranged vertically with the connecting plate (111) and are fixedly connected with its other end, It stirs and connect with the draw back plate (3) other end in the upper end of the straight pin (112).

3. according to claim 1 or 2 a kind of carburetter choke and air throttle linkage are realized using heat of engine Mechanism, which is characterized in that the driving portion (4) includes: the first driving portion (41) and second being arranged on carbureter body Driving portion (42), the driving end of first driving portion (41) and one end of the actuator on second driving portion (42) are supported It connects, the other end of actuator is fixedly connected at its articulated position with the draw back plate (3).

4. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 3 Structure, which is characterized in that first driving portion (41) includes: to be arranged on carbureter body and fix with the engine cylinder head The connector (411) of connection, the connector (411) are cavity structure, the close engine cylinder head in the hollow cavity Side be filled with paraffin (412), and the paraffin (412) and the engine cylinder head heat transfer connect, the other side is provided with top Bar (413), described mandril (413) one end are abutted with the paraffin (412), the institute on the other end and second driving portion (42) The one end for stating actuator abuts.

5. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 4 Structure, which is characterized in that second driving portion (42) includes: the limit sleeve (421) being arranged on the carbureter body, described Limit sleeve (421) has an accommodating chamber, is provided with retaining ring (422) and spring (423) in the accommodating chamber；

Push rod (424), described push rod (424) one end are threaded through in the accommodating chamber, and through the retaining ring (422) and the gear Circle (422) is fixedly connected, and the end is abutted with the mandril (413) other end, described in push rod (424) other end stretching Accommodating chamber is simultaneously fixedly connected at its articulated position with the draw back plate (3)；

Wherein, the spring (423) is set on the push rod in the accommodating chamber (424), and the spring (423) one end It is abutted with the inner sidewall of the accommodating chamber, the other end is abutted with a side end face of the retaining ring (422).

6. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 5 Structure, which is characterized in that the push rod (424) includes:

Straight-bar (4241), described straight-bar (4241) one end are threaded through in the accommodating chamber, and through the retaining ring (422) with it is described Retaining ring (422) is fixedly connected, and the end is abutted with the mandril (413) other end, and is arranged institute on the straight-bar (4241) It states spring (423), straight-bar (4241) other end exposes the accommodating chamber；

Bent rod (4242), described bent rod (4242) one end and the straight-bar (4241) other end integrally connected, the bending Bar (4242) other end is fixedly connected at its articulated position with the draw back plate (3).

7. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 6 Structure, which is characterized in that the draw back plate (3) offers limit hole at its articulated position, and the bent rod (4242) is separate One end of the straight-bar (4241) is hook, described to be articulated in the limit hole, by the bent rod (4242) and The draw back plate (3) is fixedly connected.

8. a kind of realizing carburetter choke and the solar term couplet on the door using heat of engine according to claim 5-7 is described in any item Dynamic mechanism, which is characterized in that the spring (423) is tower-shaped spring.

9. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 1 Structure, which is characterized in that

It further include the column (6) being arranged on carbureter body, it is described to stir connecting rod (5) middle part and the column (6) upper end Rotation connection；

Torsional spring, the torsional spring are set on the column (6), and the one end of torsional spring is fixed on the column (6), and the other end is solid It is scheduled on the lower surface for stirring connecting rod (5).

10. a kind of machine for realizing carburetter choke and air throttle linkage using heat of engine according to claim 9 Structure, which is characterized in that the third rocker arm (21) is arcwall face with the contact surface for stirring connecting rod (5).