CN212154956U

CN212154956U - Single-motor driven multi-cylinder electronic throttle valve assembly

Info

Publication number: CN212154956U
Application number: CN202020803105.1U
Authority: CN
Inventors: 杨大明
Original assignee: CHONGQING YUHUI MACHINERY CO LTD
Current assignee: CHONGQING YUHUI MACHINERY CO LTD
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-15
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a single motor drive's multi-cylinder electronic throttle valve assembly, including the throttle valve casing, this throttle valve casing has the throat that 2N syntropy run through, all be provided with the valve block in the throat, be provided with N pivot on the throttle valve casing, each pivot is equallyd divide and is connected with two valve blocks that correspond respectively, and can rotate in step under same pivot actuating mechanism's the drive, pivot actuating mechanism includes the motor, middle gear train and respectively solid cover are at the same pivot drive gear of each pivot with the one end, intermeshing between the adjacent pivot drive gear, the motor can drive one of them pivot drive gear through middle gear train. By adopting the technical scheme, the wheel base between each rotating shaft is greatly reduced, the overall size of the throttle valve is reduced, the occupation of installation space is reduced, the throttle valve can be suitable for more application scenes, the structure is simplified, the cost is reduced, and the assembly efficiency is improved.

Description

Single-motor driven multi-cylinder electronic throttle valve assembly

Technical Field

The utility model relates to a throttle technical field, concretely relates to single motor drive's multi-cylinder electronic throttle assembly.

Background

The air throttle is a controllable valve for controlling air to enter the engine, and the air can be mixed with gasoline to become combustible mixed gas after entering the air inlet pipe, so that the combustible mixed gas is combusted to form work. It is connected with air filter and engine cylinder, and is called the throat of automobile engine. Compared with a purely mechanical throttle valve, the electronic throttle valve can enable the opening of the throttle valve to be controlled more accurately, achieve a more reasonable air-fuel ratio, enable mixed gas to be combusted more fully, reduce emission and improve the dynamic property, the economical efficiency and the comfort of an engine.

An existing multi-cylinder electronic throttle valve (for example, a four-cylinder electronic throttle valve) generally adopts a mode that a motor drives each rotating shaft to synchronously rotate, the motor is located in the middle of each rotating shaft, and a rotating shaft driving gear on each rotating shaft is simultaneously driven by a rotating shaft driving mechanism to synchronously rotate, so that the axle distance between each rotating shaft is large, the whole size of the throttle valve is large, not only is the installation space occupied much, but also special requirements are difficult to meet, the structure is relatively complex, and the cost is high.

It is urgent to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a single motor drive's multi-cylinder electronic throttle assembly.

The technical scheme is as follows:

the utility model provides a single motor drive's multi-cylinder electronic throttle valve assembly, includes the throttle valve casing, and this throttle valve casing has a plurality of throat that run through in the syntropy, all be provided with the valve block in the throat, its main points lie in: be provided with two at least pivots that are parallel to each other, each on the throttle casing the pivot is equallyd divide do not be connected with two valve blocks that correspond at least to can rotate in step under same pivot actuating mechanism's drive, pivot actuating mechanism includes motor, intermediate gear group and respectively overlaps the pivot drive gear at the same end of each pivot admittedly, intermeshing between the adjacent pivot drive gear, and all is provided with the return torsional spring between each pivot drive gear and the throttle casing, the motor can drive one of them pivot drive gear through intermediate gear group, so that each pivot synchronous rotation.

Structure more than adopting, because the pivot drive gear intermeshing of each pivot, the motor only needs to drive one of them pivot drive gear through middle gear train, just can realize that each pivot is synchronous to be rotated, make each pivot need not to set up around the motor again, the motor sets up in the outside can, thereby the wheel base between each pivot has been reduced by a wide margin, the whole size of air throttle has been reduced simultaneously, not only reduced occupation of installation space, can be applicable to more application scenes, and the structure is more simplified moreover, not only the cost is reduced, and the assembly efficiency has been promoted again.

Preferably, the method comprises the following steps: the intermediate gear set comprises a first-stage driving gear fixedly sleeved on a motor shaft of the motor and a duplicate gear rotatably arranged on the throttle valve shell, and the duplicate gear comprises a first-stage driven gear meshed with the first-stage driving gear and a second-stage driving gear meshed with one of the rotating shaft driving gears. By adopting the structure, the number of the gears is reduced through the arrangement of the duplicate gears, the cost is reduced, the structure is more compact, the overall size is further reduced, and the matching is more stable and reliable.

Preferably, the method comprises the following steps: have actuating mechanism mounting groove and detachably lid on the throttle casing and close the mounting groove capping on the actuating mechanism mounting groove, be provided with the sealing washer between actuating mechanism mounting groove and the mounting groove capping to close and enclose and form actuating mechanism installation cavity, motor, intermediate gear group, pivot drive gear and return torsional spring all are arranged in actuating mechanism installation cavity. By adopting the structure, the structure is simple and reliable, easy to assemble and good in sealing performance, and the stable operation of the rotating shaft driving mechanism is ensured.

Preferably, the method comprises the following steps: and a permanent magnet is arranged at the central position of one of the rotating shaft driving gears far away from the end surface of one side of the corresponding rotating shaft, and a Hall sensor which is adaptive to the permanent magnet is arranged on the mounting groove cover. By adopting the structure, the rotating angle of the rotating shaft can be accurately monitored, so that the opening degree of the valve plate can be accurately controlled, and the valve plate is high in anti-interference capability, stable and reliable.

Preferably, the method comprises the following steps: each return torsion spring is respectively sleeved at one end of the corresponding rotating shaft insertion driving mechanism mounting cavity, one lap joint arm is lapped on the corresponding rotating shaft driving gear, and the other lap joint arm is lapped on the corresponding lap joint seat in the driving mechanism mounting cavity. Compared with the existing mode of installing the torsion spring at the middle part of the rotating shaft (between two valve plates), the structure has the advantages that the distance between the two valve plates (throat) can be reduced, the overall structure is more compact, the overall size is further reduced, the assembly difficulty of the torsion spring and related parts is greatly reduced, and the assembly efficiency is improved.

Preferably, the method comprises the following steps: both ends of each rotating shaft are rotatably mounted on the throttle casing through a bearing. By adopting the structure, each rotating shaft is only provided with two bearings, so that the reliability of assembly can be ensured, and the structure is simple and reliable.

Preferably, the method comprises the following steps: the air inlet end of the throat is embedded with a copper sleeve, a plurality of oil inlet micropores are formed in the copper sleeve, an annular oil supply channel is formed between the outer wall of each copper sleeve and the hole wall of the corresponding throat, a plurality of oil injector mounting holes are formed in the throttle shell, and oil injectors mounted in the oil injector mounting holes can supply oil to the annular oil supply channels on the two corresponding copper sleeves respectively. By adopting the structure, each oil sprayer can respectively supply oil to the two corresponding annular oil supply channels, so that finally gasoline enters the throats through the oil inlet micropores, one oil sprayer can supply oil to the two throats, the performance of the oil sprayer can be fully utilized, the using quantity of the oil sprayer is reduced, the production cost is reduced, the integral structure is more compact, the occupied mounting space is reduced, and the applicability is better.

Preferably, the method comprises the following steps: and the annular oil supply channels of every two copper sleeves are respectively communicated through corresponding oil conveying channels on the throttle valve shell, and each oil injector mounting hole is respectively communicated with one annular oil supply channel corresponding to the copper sleeve. By adopting the structure, the oil injector arranged in the oil injector mounting hole can supply oil to one annular oil supply channel firstly and then supply oil to the other annular oil supply channel through the oil delivery channel, so that oil can be supplied to two annular oil supply channels simultaneously.

Preferably, the method comprises the following steps: and the annular oil supply channels of every two copper sleeves are respectively communicated through corresponding oil delivery channels on the throttle shell, and the oil injector mounting holes are respectively communicated with the corresponding oil delivery channels. By adopting the structure, the oil injector arranged in the oil injector mounting hole can supply oil to the oil delivery channel, and then the oil delivery channel can supply oil to the two annular oil supply channels simultaneously, so that the oil supply is more balanced, the proportion of air and fuel oil can be controlled more accurately, and the combustion efficiency is improved.

Preferably, the method comprises the following steps: the copper bush is provided with at least one circle of annular groove at the position close to the gas outlet end, the hole wall of the throat and the corresponding annular groove are encircled to form the annular oil supply channel, each oil inlet micropore is respectively arranged at the bottom of the corresponding annular groove, adjacent annular grooves are separated by an annular convex rib, and the outer diameter of the annular convex rib is smaller than that of the corresponding copper bush. By adopting the structure, the fuel is limited to flow in the annular groove, so that oil leakage can be avoided, and the flow is smoother; and the outer diameter of the annular convex rib is smaller than that of the corresponding copper sleeve, so that fuel can flow between the adjacent annular grooves, and mutual supplement is realized.

Compared with the prior art, the beneficial effects of the utility model are that:

the single-motor-driven multi-cylinder electronic throttle valve assembly adopting the technical scheme is novel in structure and ingenious in design, the wheel base between each rotating shaft is greatly reduced, the overall size of the throttle valve is reduced, the occupation of the installation space is reduced, the throttle valve assembly can be suitable for more application scenes, the structure is simplified, the cost is reduced, and the assembly efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 5 is a schematic structural view of a copper sleeve;

FIG. 6 is a rear view of FIG. 1;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;

fig. 8 is a schematic structural diagram of the rotating shaft driving mechanism.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1 and 7, a single-motor driven multi-cylinder electronic throttle valve assembly mainly includes a throttle valve housing 1, the throttle valve housing 1 has a plurality of throats 1a penetrating in the same direction, valve plates 4 are disposed in the throats 1a, at least two mutually parallel rotating shafts 5 are disposed on the throttle valve housing 1, that is: when each rotating shaft 5 rotates, each corresponding valve plate 4 (at least two valve plates 4) can be driven to rotate synchronously with the rotating shaft.

Referring to fig. 7 and 8, the shafts 5 can be driven by the same shaft driving mechanism to rotate synchronously. Specifically, the rotating shaft driving mechanism comprises a motor 7, a middle gear set and rotating shaft driving gears 6 fixedly sleeved at the same end of each rotating shaft 5 respectively, the adjacent rotating shaft driving gears 6 are meshed with each other, return torsion springs 10 are arranged between each rotating shaft driving gear 6 and the throttle valve shell 1, and the motor 7 can drive one of the rotating shaft driving gears 6 through the middle gear set so as to enable each rotating shaft 5 to rotate synchronously.

The intermediate gear set comprises a first-stage driving gear 8 fixedly sleeved on a motor shaft of the motor 7 and a duplicate gear 9 rotatably arranged on the throttle valve shell 1, and the duplicate gear 9 comprises a first-stage driven tooth 9a meshed with the first-stage driving gear 8 and a second-stage driving tooth 9b meshed with one of the rotating shaft driving gears 6.

A motor shaft of the motor 7 drives a first-stage driving gear 8 to rotate, the first-stage driving gear 8 drives a duplicate gear 9 to rotate, the duplicate gear 9 drives one of the rotating shaft driving gears 6 to rotate, and meanwhile, other rotating shaft driving gears 6 and the rotating shaft driving gears 6 rotate synchronously.

Referring to fig. 6 and 7, the throttle casing 1 has a driving mechanism mounting groove 1d and a mounting groove cover 1e detachably covering the driving mechanism mounting groove 1d, a sealing ring 1g is disposed between the driving mechanism mounting groove 1d and the mounting groove cover 1e (the sealing ring 1g is mounted on the mounting groove cover 1e), and encloses to form a driving mechanism mounting chamber, and the motor 7, the intermediate gear set, the rotating shaft driving gear 6 and the return torsion spring 10 are all located in the driving mechanism mounting chamber.

Referring to fig. 7 and 8, a permanent magnet 11 is disposed at a central position of one side end face of one of the rotation shaft driving gears 6 away from the corresponding rotation shaft 5, and a hall sensor 12 adapted to the permanent magnet 11 is disposed on the mounting groove cover 1 e. The rotation angle of the permanent magnet 11 is detected through the Hall sensor 12, the rotation angle of the rotating shaft driving gear 6 can be determined, and correspondingly, the rotation angle of the rotating shaft 5 and the rotation angle of the valve plate 4 can be accurately known, so that the opening degree of the valve plate 4 can be accurately controlled.

Referring to fig. 7 and 8, each return torsion spring 10 is respectively sleeved at one end of the corresponding rotating shaft 5 inserted into the driving mechanism mounting chamber, one of the lap joint arms is lapped on the corresponding rotating shaft driving gear 6, and the other lap joint arm is lapped on the corresponding lap joint seat 1f in the driving mechanism mounting chamber. Through the setting of return torsional spring 10, can make pivot 5 have the trend of self return, when motor 7 no longer the application of force, valve block 4 can automatic gyration to closed position.

Further, referring to fig. 7, both ends of each rotary shaft 5 are rotatably mounted on the throttle housing 1 through a bearing 13. And each rotating shaft 5 can ensure the reliability of assembly by only being provided with two bearings 13, and is simple and reliable.

Referring to fig. 1-4, a copper sleeve 2 is embedded at an air inlet end of each throat 1a, a plurality of oil inlet micro-holes 2a are formed in the copper sleeve 2, an annular oil supply channel 3 is formed between an outer wall of each copper sleeve 2 and a hole wall of the corresponding throat 1a, a plurality of oil injector mounting holes 1b are formed in the throttle casing 1, and oil injectors mounted in the oil injector mounting holes 1b can supply oil to the annular oil supply channels 3 on the two corresponding copper sleeves 2.

Specifically, there are two ways:

the first method is as follows: referring to fig. 3 and 4, the annular oil supply channels 3 of every two copper sleeves 2 are respectively communicated through the corresponding oil delivery channel 1c on the throttle casing 1, and each oil injector mounting hole 1b is respectively communicated with one annular oil supply channel 3 of the corresponding copper sleeve 2, so that an oil injector mounted in the oil injector mounting hole 1b can supply oil to one annular oil supply channel 3 firstly and then supply oil to the other annular oil supply channel 3 through the oil delivery channel 1c, and the two annular oil supply channels 3 can be supplied with oil simultaneously. In this way, the injector mounting holes 1b are all opened on the same side wall of the throttle housing 1, that is: the fuel injectors are all arranged on the same side wall of the throttle valve shell 1, so that the installation structure is more compact, and the space occupation is further reduced.

The second method comprises the following steps: the annular oil supply channels 3 of every two copper sleeves 2 are respectively communicated through corresponding oil delivery channels 1c on the throttle valve shell 1, and the oil injector mounting holes 1b are respectively communicated with the corresponding oil delivery channels 1 c. By adopting the mode, the oil injector arranged in the oil injector mounting hole 1b can supply oil to the oil delivery channel 1c, and then the oil delivery channel 1c simultaneously supplies oil to the two annular oil supply channels 3, so that the oil supply is more balanced, the proportion of air and fuel oil can be more accurately controlled, and the combustion efficiency is improved.

Referring to fig. 2 and 3, each oil delivery channel 1c is close to the air outlet end of the corresponding copper sleeve 2, and can communicate with two corresponding annular oil supply channels 3. Specifically, when the oil delivery passage 1c is machined in the throttle casing 1, a long and thin deep hole is milled from the outer wall of the throttle casing 1, the deep hole can be communicated with the two annular oil supply passages 3, and then the inlet end of the deep hole is blocked by the plug 1c1, so that the oil delivery passage 1c is formed. The processing mode is simple and reliable, and the processing precision can be ensured.

Referring to fig. 4 and 5, the copper bush 2 has a cylindrical structure as a whole, and at least one ring of annular groove 2b is formed at a position of the copper bush 2 near the gas outlet end, and in this embodiment, two rings of annular grooves 2b are formed on each copper bush 2. The hole wall of each throat 1a and two annular grooves 2b of the corresponding copper bush 2 surround to form an annular oil supply channel 3, and it should be noted that adjacent annular grooves 2b are separated by annular convex ribs 2c, and the outer diameter of the annular convex ribs 2c is smaller than the outer diameter of the corresponding copper bush 2 (see the enlarged part in fig. 4), so that fuel oil can flow between the adjacent annular grooves 2b to realize mutual supplement. The outer walls of other parts of the copper sleeve 2 are tightly attached to the hole wall corresponding to the throat 1a, so that oil leakage can be effectively avoided.

Correspondingly, each oil inlet micropore 2a is respectively arranged at the bottom of the corresponding annular groove 2b, and in order to enable fuel to more dispersedly and uniformly flow into the throat 1a, each oil inlet micropore 2a is annularly and uniformly distributed in the corresponding annular groove 2 b. And, the oil-feed micropores 2a in the adjacent annular grooves 2b are distributed in a staggered manner to further disperse the spatial distribution of each oil-feed micropore 2 a.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a single motor drive's multi-cylinder electronic throttle valve assembly, includes throttle valve casing (1), and this throttle valve casing (1) has a plurality of throat (1a) that run through in the syntropy, all be provided with valve block (4) in throat (1a), its characterized in that: be provided with two at least pivot (5) that are parallel to each other on throttle valve casing (1), each pivot (5) are equallyd divide do not at least to be connected with two valve block (4) that correspond to can be in synchronous rotation under same pivot actuating mechanism's the drive, pivot actuating mechanism includes motor (7), intermediate gear group and respectively solid cover at pivot drive gear (6) of same one end of each pivot (5), intermeshing between adjacent pivot drive gear (6), and all be provided with return torsional spring (10) between each pivot drive gear (6) and throttle valve casing (1), motor (7) can drive one of them pivot drive gear (6) through intermediate gear group to make each pivot (5) synchronous rotation.

2. The single-motor driven multi-cylinder electronic throttle assembly of claim 1, wherein: the intermediate gear set comprises a primary driving gear (8) fixedly sleeved on a motor shaft of the motor (7) and a duplicate gear (9) rotatably installed on the throttle valve shell (1), wherein the duplicate gear (9) comprises a primary driven gear (9a) meshed with the primary driving gear (8) and a secondary driving gear (9b) meshed with one of the rotating shaft driving gears (6).

3. The single-motor driven multi-cylinder electronic throttle assembly of claim 1, wherein: have actuating mechanism mounting groove (1d) and detachably lid on throttle valve casing (1) and close mounting groove capping (1e) on actuating mechanism mounting groove (1d), be provided with between actuating mechanism mounting groove (1d) and mounting groove capping (1e) sealing washer (1g) to close and enclose and form actuating mechanism installation cavity, motor (7), intermediate gear group, pivot drive gear (6) and return torsional spring (10) all are located actuating mechanism installation cavity.

4. The single-motor driven multi-cylinder electronic throttle assembly of claim 3, wherein: one of them pivot drive gear (6) are kept away from the central point who corresponds pivot (5) one side terminal surface and are provided with permanent magnet (11), be provided with hall sensor (12) that suit with permanent magnet (11) on mounting groove capping (1 e).

5. The single-motor driven multi-cylinder electronic throttle assembly of claim 3, wherein: each return torsion spring (10) is respectively sleeved at one end of a corresponding rotating shaft (5) inserted into the driving mechanism mounting cavity, one lap joint arm is lapped on the corresponding rotating shaft driving gear (6), and the other lap joint arm is lapped on a corresponding lap joint seat (1f) in the driving mechanism mounting cavity.

6. The single-motor driven multi-cylinder electronic throttle assembly of claim 1, wherein: both ends of each rotating shaft (5) are rotatably arranged on the throttle valve shell (1) through a bearing (13).

7. The single-motor driven multi-cylinder electronic throttle assembly of claim 1, wherein: the air inlet end of the throat (1a) is embedded with a copper sleeve (2), a plurality of oil inlet micropores (2a) are formed in the copper sleeve (2), an annular oil supply channel (3) is formed between the outer wall of each copper sleeve (2) and the hole wall of the corresponding throat (1a), a plurality of oil injector mounting holes (1b) are formed in the throttle valve shell (1), and oil injectors installed in the oil injector mounting holes (1b) can supply oil to the annular oil supply channels (3) on the two corresponding copper sleeves (2) respectively.

8. The single-motor driven multi-cylinder electronic throttle assembly of claim 7, wherein: the annular oil supply channels (3) of every two copper sleeves (2) are communicated through corresponding oil conveying channels (1c) on the throttle valve shell (1), and each oil sprayer mounting hole (1b) is communicated with one annular oil supply channel (3) corresponding to one copper sleeve (2).

9. The single-motor driven multi-cylinder electronic throttle assembly of claim 7, wherein: the annular oil supply channels (3) of every two copper sleeves (2) are respectively communicated through corresponding oil delivery channels (1c) on the throttle valve shell (1), and the oil injector mounting holes (1b) are respectively communicated with the corresponding oil delivery channels (1 c).

10. The single-motor driven multi-cylinder electronic throttle assembly of claim 7, wherein: the position that copper sheathing (2) are close to the end of giving vent to anger has at least round annular groove (2b), the pore wall of larynx (1a) surrounds with annular groove (2b) that correspond and forms annular fuel feeding passageway (3), and each oil feed micropore (2a) is seted up respectively at the tank bottom that corresponds annular groove (2b), separates through annular protruding muscle (2c) between adjacent annular groove (2b), the external diameter of annular protruding muscle (2c) is less than the external diameter that corresponds copper sheathing (2).