CN2413036Y

CN2413036Y - Carburettor for motorycle

Info

Publication number: CN2413036Y
Application number: CN 00222369
Authority: CN
Inventors: 刘成栋
Original assignee: HONGGUANG VEHICLE ELECTROMECHANICAL FITTING CO Ltd SICHUAN
Current assignee: HONGGUANG VEHICLE ELECTROMECHANICAL FITTING CO Ltd SICHUAN
Priority date: 2000-02-25
Filing date: 2000-02-25
Publication date: 2001-01-03
Anticipated expiration: 2010-02-25

Abstract

The utility model relates to a motorcycle carburetor. An accelerating pump device is arranged on a floater cover 14, and a transmission device of the accelerating pump is arranged on a main body 13. The accelerating pump comprises a base body 9 and a pump cover 10, the base body 9 and the pump cover 10 are connected to form a cavity body 37, and a diaphragm 17 is arranged in the cavity body; a top rod 2 passes through a hole channel of the base body to be fixedly connected with the diaphragm 17, and the upper end of the top rod 2 is corresponding to a pressing plate 36 of a rotary arm 3. The cavity body 37 is connected with a floater chamber through an oil hole 34 and a unidirectional valve 16, and the cavity body 37 is communicated with a nozzle 20 through a unidirectional valve 18 and an accelerating oil channel 19. A cam 5 is sheathed on a supporting column 6, and a torsion spring 28 is sheathed on the cam 5; a bracket 4 is fixedly connected with the main body 13, the rotary arm 3 is sheathed on a supporting column 7 to carry out transmission connection with the cam 5, a pull rope 24 of a gasoline throttle is connected with a pin 27 of the cam 5. The pull rope of the gasoline throttle is pulled, and then, additional accelerating fuel oil can be provided by the accelerating pump for a motorcycle engine to enable the motorcycle to obtain better accelerating ability.

Description

Motorcycle carburetor

The utility model is relevant with motorcycle carburetor, and is especially relevant with the Carburetor of band accelerating pump device.

Existing motorcycle plunger type carburetor does not have the accelerating pump device, can not provide extra acceleration fuel oil to motor when motorcycle raises speed.

The purpose of this utility model provides a kind of simple in structure, and is easy to operate, can provide extra acceleration fuel motorcycle Carburetor to motorcycle engine.

The utility model is achieved in that

The utility model motorcycle carburetor, comprise Carburetor body 13 and float cover 14, be connected with the accelerating pump device on the float cover 14, the accelerating pump transmission device is arranged on the body 13, the accelerating pump device comprises matrix 9 and pump cover 10, matrix 9 is connected with float cover 14, pump cover 10 is connected to form cavity 37 with matrix 9, diaphragm 17 is arranged in the cavity, duct 15 is arranged on the matrix 9, push rod 2 passes the duct 15 of matrix, its lower end and diaphragm 17 are connected, its upper end is corresponding with the pressing plate 36 of spiral arm 3 by sheath, and cavity 37 is connected float chamber by oilhole 34 with one-way valve 16, by one-way valve 18 and the acceleration oil duct 19 logical nozzles 20 that quicken.The accelerating pump transmission device has cam 5 to be enclosed within on the pillar 6 of body 13, and torsion spring 28 is enclosed within on the cam 5, and support 4 is connected on the body 13, and spiral arm 3 is enclosed within on the pillar 7 on the body, is in transmission connection with cam 5, and throttle drag-line 24 is connected with the pin 27 of cam 5.

Positioning pillars 8 is arranged on the utility model body 13, and the end of support 4 is near the outer end of pillar 7, and the hole that throttle drag-line 24 passes on the support 4 is connected with pin 27.

Fine-tuning nut 30 is arranged on the utility model spiral arm 3.

The utility model structure tube list, easy to manufacture, only need mounting bracket on the Carburetor body, spiral arm and accelerating pump cam, the matrix and the pump cover of connection accelerating pump device on float cover, and the oil circuit of connection float cover and accelerating pump, the accelerating pump driving mechanism is linked to each other with autobicycle gasoline throttle, and when strengthening autobicycle gasoline throttle, accelerating pump will be worked thereupon, provide extra acceleration fuel oil to motorcycle engine, make motorcycle obtain better acceleration performance.

Following is accompanying drawing of the present utility model:

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is the A-A sectional view of Fig. 3.

Fig. 5 is the corbeling figure on the body.

Fig. 6 is the right elevation of Fig. 5.

Fig. 7 is the B-B sectional view of Fig. 3.

Fig. 8 is the partial sectional view of Fig. 5.

Fig. 9 is the plan view of Fig. 5.

Figure 10 is the plan view of Fig. 2.

Following is embodiment of the present utility model:

1 is the accelerating pump device among Fig. 1, and 2 is acceleration term bar and sheath, and 3 is the spiral arm assembly, the 4th, and support, the 5th, accelerating pump cam.These parts constitute the main difference of plunger Carburetor general on the utility model and the market in outward appearance and function.The utility model increases by three pillars as shown in Figure 5 on general Carburetor body basis.

Fig. 5 B-C post 6 will put the accelerating pump cam, and pillar 7 will put the spiral arm assembly, and pillar 8 is that accelerating pump cam stop bit is used.Increased accelerating pump on the general plunger type carburetor float cover basis, the accelerating pump device is by accelerating pump matrix 9 and quicken pump cover 10 and form, and is fixed on the accelerating pump matrix by screw 11, the 12 fast pump cover that accompanies each other.2 is accelerating pump push rod and sheath, the 22nd, and positioning screwn, 3 is the spiral arm assembly, the 24th, throttle drag-line, the 4th, support, the 5th, be 27 and torsion spring 28 as the terminal pin of fast pump cam, drag-line, these parts have constituted the accelerating pump driving mechanism of Carburetor.

Torsion spring 28 is placed on the pillar 6 more in the lump after on the accelerating pump cam 5 and support 4 is fixed by screw 22, and its lower end is by pillar 8 location; Spiral arm assembly 3 is enclosed within on the pillar 7, and by the end of support 4 location, make it not can be on axle play, the pressing plate of spiral arm is on the accelerating pump push rod simultaneously; Throttle drag-line pin 27 is stuck on the accelerating pump cam, so that can drive the accelerating pump camming movement.

When the user spurs throttle drag-line 24, the acceleration oil mass in the accelerating pump is by drawing in the float cover.Among Fig. 3 34 is the oilhole that leads to accelerating pump, there is an one-way valve (among Fig. 4 A-A 16) to guarantee that fuel oil only flows to accelerating pump and can not flow backwards from float chamber at this, 15 ducts that move up and down for the accelerating pump push rod, have just like fast pump diaphragm 17 in the lower end of accelerating pump push rod and to be attached thereto, moving up and down of push rod also just drives moving up and down of accelerating pump diaphragm, thereby will flow to the fuel oil of accelerating pump through quickening oil by float chamber by road one-way valve 18, quicken oil duct 19 and be pressed into acceleration nozzle 20 ejections, to obtain the required acceleration oil mass of motor, but only this can't make accelerating pump work, and must increase the accelerating pump driving mechanism on this basis so that the throttle mechanism of accelerating pump and motorcycle links to each other, right when strengthening autobicycle gasoline throttle like this, when strengthening autobicycle gasoline throttle, will work like this as fast pump thereupon.

The complete Carburetor of loading onto accelerating pump driving mechanism and accelerating pump is shown in Figure 2, the throttle drag-line drives the accelerating pump cam by pin and rotates round pillar 6, the accelerating pump cam also just drives the spiral arm assembly around pillar 7 rotations simultaneously, the rotation meeting of spiral arm 3 itself is owing to the spiral arm pressing plate is depressed the motion of staying of straight line that the accelerating pump push rod changes the accelerating pump push rod into, therefore accelerating pump will work like this, finish whole accelerating process, the function of the support 4 in the accelerating pump driving mechanism is mainly accelerating pump cam 5 and spiral arm assembly 3 is located and spur the accelerating pump cam with the 29 guiding throttle drag-lines 24 of the guide hole on it in correct vertical position; Acceleration oil mass during accelerating pump work can be finely tuned by the nut on the spiral arm assembly 30.

Claims

1, a kind of motorcycle carburetor, comprise Carburetor body (13) and float cover (14), it is characterized in that being connected with the accelerating pump device on the float cover (14), body has the accelerating pump transmission device on (13), comprise matrix (9) and pump benefit (10) as fast pump-unit, matrix (9) is connected with float cover (14), pump cover (10) is connected to form cavity (37) with matrix (9), diaphragm (17) is arranged in the cavity, duct (15) is arranged on the matrix (9), push rod (2) passes the duct (15) of matrix, its lower end and diaphragm (17) are connected, its upper end is corresponding with the pressing plate (36) of spiral arm (3) by sheath, cavity (37) is connected float chamber by oilhole (34) with one-way valve (16), by one-way valve (18) and the logical nozzle (20) that quickens of acceleration oil duct (19), the accelerating pump transmission device has cam (5) to be enclosed within on the pillar (6) of body (13), torsion spring (28) is enclosed within on the cam (5), support (4) is connected on the body (13), spiral arm (3) is enclosed within on the pillar (7) on the body, be in transmission connection with cam (5), throttle drag-line (24) is connected with the pin (27) of cam (5).

2, Carburetor according to claim 1 is characterized in that positioning pillars (8) is arranged on the body (13), and the end of support (4) is near the outer end of pillar (7), and the hole that throttle drag-line (24) passes on the support (4) is connected with pin (27).

3, Carburetor according to claim 1 and 2 is characterized in that fine-tuning nut (30) is arranged on the spiral arm (3).