A semi-automatic air door fuel supply system

Abstract

A semi-automatic choke fuel supply system, comprising a body and a choke mechanism, a cable mechanism and a cable fixing mechanism mounted thereon. The cable mechanism is connected to the choke mechanism, and the cable fixing mechanism is connected to the cable mechanism through a cable. The cable mechanism includes: a cable seat, which is a hollow structure seat body. The choke shaft of the choke mechanism is installed in the cable seat, and a choke plate is installed on the choke shaft; full-open and full-closed gear arms are arranged on the outer surface of the cable seat, and corresponding limit arms are arranged on the body; an axial full-open boss and an axial full-closed boss are arranged on the inner wall of the cable seat, and corresponding limit bosses are arranged on the choke shaft. The choke mechanism is also provided with a choke return member, which is respectively connected to the choke shaft and the cable seat; a cable joint, which is installed on the cable seat and connected to the cable fixing mechanism; and a cable return member, which is sleeved on the outer surface of the cable seat and respectively connected to the cable seat and the body.

Description

Technical Field

[0001] The present invention relates to a fuel supply system, in particular to a semi-automatic choke fuel supply system. Background Art

[0002] When starting the engine, it is necessary to close the choke plate to enrich the fuel to meet the starting requirements. Refer to Figure 1 , Figure 1 which is a schematic structural diagram of a prior art fuel supply system. As Figure 1 shown, the choke plate 200 controlled by the cable mechanism 100 of the prior art fuel supply system has only two states: fully open or fully closed. Due to factors such as the working environment of the engine, the engine is often difficult to start whether the choke is in the fully open state or the fully closed state. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a semi-automatic choke fuel supply system in view of the above-mentioned defects of the prior art.

[0004] To achieve the above object, the present invention provides a semi-automatic choke fuel supply system, including a body and a choke mechanism, a cable mechanism and a cable fixing mechanism mounted on the body. The cable mechanism is connected to the choke mechanism, and the cable fixing mechanism is connected to the cable mechanism through a cable. Wherein, the cable mechanism includes:

[0005] A cable seat, which is a hollow structure seat body. The choke shaft of the choke mechanism is installed in the cable seat, and a choke plate is installed on the choke shaft. An all-open gear arm and an all-closed gear arm are provided on the outer surface of the cable seat, and a limit arm is correspondingly provided on the body. An axial all-open boss and an axial all-closed boss are provided on the inner wall of the cable seat, and a limit boss is correspondingly provided on the choke shaft. The choke mechanism is further provided with a choke reset member, which is respectively connected to the choke shaft and the cable seat;

[0006] A cable joint, which is installed on the cable seat and connected to the cable fixing mechanism; and

[0007] A cable reset member, which is sleeved on the outer surface of the cable seat and respectively connected to the cable seat and the body.

[0008] In the above semi-automatic choke fuel supply system, the limit boss is arranged on one side of the top end of the choke shaft.

[0009] In the above semi-automatic choke fuel supply system, the cable seat is of a hollow cylindrical structure.

[0010] The above semi-automatic choke fuel supply system, wherein the cable reset member is a cable torsion spring, the cable torsion spring is sleeved on the outer cylindrical surface of the cable seat, one end of the cable torsion spring is clamped on the cable seat, and the other end of the cable torsion spring is clamped on the body.

[0011] The above semi-automatic choke fuel supply system, wherein the choke reset member is a choke torsion spring, the choke torsion spring is sleeved on the choke shaft, one end of the choke torsion spring abuts against the choke shaft, and the other end of the choke torsion spring is clamped on the cable seat.

[0012] The above semi-automatic choke fuel supply system, wherein a joint mounting portion is provided on the cable seat, and the cable joint is fixed on the joint mounting portion through a joint mounting hole.

[0013] The above semi-automatic choke fuel supply system, wherein the joint mounting portion is provided on one side of the cable seat, and the axis of the joint mounting hole is parallel to the axis of the cable seat.

[0014] The above semi-automatic choke fuel supply system, wherein the cable joint is fixed in the joint mounting hole through a snap ring.

[0015] The above semi-automatic choke fuel supply system, wherein a cable screw is provided on the cable joint.

[0016] The above semi-automatic choke fuel supply system, wherein one end of the cable is fixed on the cable joint through the cable screw, and the other end of the cable passes through the cable fixing mechanism and is connected to an external control mechanism.

[0017] The technical effect of the present invention is as follows:

[0018] The present invention can realize that when the engine is started with the choke plate closed, the choke plate can automatically open a certain angle, which is greater than the fully closed angle and less than the fully open angle, so as to adjust the fuel concentration to meet the engine starting requirements.

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not a limitation to the present invention. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a fuel supply system in the prior art;

[0021] Figure 2 It is a schematic structural diagram of a fuel supply system according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic structural diagram of a fuel supply system according to an embodiment of the present invention in another direction;

[0023] Figure 4 Schematic diagram of the cable seat structure according to an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the choke valve torsion spring structure according to an embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the cable torsion spring structure according to an embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the choke valve plate opened by an angle according to an embodiment of the present invention;

[0027] Figure 8 is Figure 7 Partial sectional view of the top view.

[0028] Among them, the reference numerals

[0029] Prior art

[0030] 100 Cable mechanism

[0031] 200 Choke valve plate

[0032] The present invention

[0033] 1 Body

[0034] 11 Limiting arm

[0035] 2 Cable mechanism

[0036] 21 Cable seat

[0037] 211 Full-open gear arm

[0038] 212 Full-closed gear arm

[0039] 213 Axial full-open boss

[0040] 214 Axial full-closed boss

[0041] 215 Connector mounting part

[0042] 216 Connector mounting hole

[0043] 22 Cable connector

[0044] 23 Cable screw

[0045] 24 Snap ring

[0046] 25 Cable torsion spring

[0047] 3 Cable fixing mechanism

[0048] 4 Choke valve mechanism

[0049] 41 Choke shaft

[0050] 411 Limit boss

[0051] 42 Choke plate

[0052] 43 Choke return spring Detailed implementation manners

[0053] The structural principle and working principle of the present invention will be specifically described below with reference to the accompanying drawings:

[0054] See Figures 2 - 4 , Figure 2 , which is a schematic structural diagram of a fuel supply system according to an embodiment of the present invention, Figure 3 , which is a schematic structural diagram of the fuel supply system in another direction according to an embodiment of the present invention, Figure 4 , which is a schematic structural diagram of the cable seat 21 according to an embodiment of the present invention. The semi-automatic choke fuel supply system of the present invention includes a body 1 and a choke mechanism 4, a cable mechanism 2 and a cable fixing mechanism 3 installed on the body 1. The cable mechanism 2 is connected to the choke mechanism 4, and the cable fixing mechanism 3 is connected to the cable mechanism 2 through a cable. Among them, the cable mechanism 2 includes: a cable seat 21, which is a hollow structure seat body, and the cable seat 21 is preferably a hollow cylindrical structure. The choke shaft 41 of the choke mechanism 4 is installed in the cable seat 21, and a choke plate 42 is installed on the choke shaft 41; a fully open gear arm 211 and a fully closed gear arm 212 are provided on the outer surface of the cable seat 21, and a limit arm 11 is correspondingly provided on the body 1; an axis fully open boss 213 and an axis fully closed boss 214 are provided on the inner wall of the cable seat 21, and a limit boss 411 is correspondingly provided on the choke shaft 41. The limit boss 411 is preferably provided on one side of the top end of the choke shaft 41. The choke mechanism 4 is also provided with a choke return member, which is respectively connected to the choke shaft 41 and the cable seat 21; a cable joint 22, which is installed on the cable seat 21 and connected to the cable fixing mechanism 3; and a cable return member, which is sleeved on the outer surface of the cable seat 21 and respectively connected to the cable seat 21 and the body 1.

[0055] See Figure 5 , Figure 5 , which is a schematic structural diagram of the choke return spring 43 according to an embodiment of the present invention. In this embodiment, the choke return member is preferably a choke return spring 43. The choke return spring 43 is sleeved on the choke shaft 41. One end of the choke return spring 43 abuts against the choke shaft 41, and the other end of the choke return spring 43 is clamped on the cable seat 21.

[0056] See Figure 6, Figure 6 It is a schematic structural diagram of the wire-pulling torsion spring 25 according to an embodiment of the present invention. In this embodiment, the wire-pulling reset member is preferably the wire-pulling torsion spring 25. The wire-pulling torsion spring 25 is sleeved on the outer cylindrical surface of the wire-pulling seat 21. One end of the wire-pulling torsion spring 25 is clamped on the wire-pulling seat 21, and the other end of the wire-pulling torsion spring 25 is clamped on the body 1.

[0057] In this embodiment, a joint mounting portion 215 is provided on the wire-pulling seat 21. The wire-pulling joint 22 is fixed on the joint mounting portion 215 through a joint mounting hole 216. The joint mounting portion 215 is preferably provided on one side of the wire-pulling seat 21. The axis of the joint mounting hole 216 is parallel to the axis of the wire-pulling seat 21. The wire-pulling joint 22 is fixed in the joint mounting hole 216 through a snap ring 24. A wire-pulling screw 23 is further provided on the wire-pulling joint 22. One end of the external wire is fixed on the wire-pulling joint 22 through the wire-pulling screw 23, and the other end of the wire passes through the wire-pulling fixing mechanism 3 and is connected to an external control mechanism.

[0058] In an embodiment of the present invention, a wire-pulling torsion spring 25 is sleeved on the outer cylindrical surface of the wire-pulling seat 21. One end of the wire-pulling torsion spring 25 is stuck on the wire-pulling seat 21, and the other end of the wire-pulling torsion spring 25 is stuck on the body 1. Under the action of the wire-pulling torsion spring 25, the fully open gear arm 211 of the wire-pulling seat 21 abuts against the limit arm 11 on the body 1, and the choke flap 42 is in the fully open position (as Figure 3 shown, the wire-pulling seat 21 is located in the fully open position), so as to ensure that the choke flap 42 is always in the open state; a joint mounting portion 215 is provided on the wire-pulling seat 21. A joint mounting hole 216 is provided on the joint mounting portion 215. The wire-pulling joint 22 is installed in the joint mounting hole 216 and fixed through a snap ring 24. A wire-pulling screw 23 is installed on the wire-pulling joint 22. The wire-pulling joint 22 is connected to the wire-pulling fixing mechanism 3 by an external wire. By pulling the wire through an external control mechanism, the wire-pulling mechanism 2 can be controlled to close the choke mechanism 4.

[0059] The choke torsion spring 43 is sleeved on the choke shaft 41. One end of the choke torsion spring 43 abuts against the choke shaft 41, and the other end of the choke torsion spring 43 is stuck on the wire-pulling seat 21. Under the torque action of the choke torsion spring 43, the limit boss 411 of the choke shaft 41 always fits with the shaft fully open boss 213 of the wire-pulling seat 21. At this time, the choke shaft 41 is in the fully open position and is in a relatively static state with the wire-pulling seat 21, and rotates with the rotation of the wire-pulling seat 21. The choke shaft 41 and the wire-pulling seat 21 are of a split structure and can rotate independently with the choke torsion spring 43. The choke flap 42 is installed on the choke shaft 41 and rotates synchronously with the choke shaft 41.

[0060] See Figure 7 and Figure 8 ,Figure 7 Schematic diagram showing the throttle plate opening at an angle according to an embodiment of the present invention Figure 8 is Figure 7 Partial sectional view of the top view. During operation, before the engine starts, pulling the external cable controls the cable mechanism 2 to drive the throttle mechanism 4 to be in the closed state; when the engine starts, a certain suction force is generated. At this time, the cable seat 21 is located at the fully closed position under the action of the external cable tension, that is, the fully closed gear arm 212 abuts against the limit arm 11. The throttle plate 42 is affected by the engine suction force, and the throttle shaft 41 rotates with the throttle plate 42 in the cable seat 21. The limit boss 411 of the throttle shaft 41 is located between the shaft fully open boss 213 and the shaft fully closed boss 214, and does not fit the shaft fully open boss 213 and the shaft fully closed boss 214 of the cable seat 21, so that the throttle plate 42 can open a certain angle A (0° < A < 90°, that is, greater than the fully closed angle and less than the fully open angle) by itself, thereby adjusting the fuel concentration to meet the engine starting requirements.

[0061] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A semi-automatic choke fuel supply system, comprising a body and a choke mechanism, a cable mechanism and a cable fixing mechanism mounted on the body, the cable mechanism being connected to the choke mechanism, and the cable fixing mechanism being connected to the cable mechanism through a cable, characterized in that, The cable pulling mechanism includes: A cable pulling seat, which is a hollow structural seat. The choke valve shaft of the choke valve mechanism is installed in the cable pulling seat, and a choke valve plate is installed on the choke valve shaft. An all-open gear arm and an all-closed gear arm are arranged on the outer surface of the cable pulling seat, and a limiting arm is correspondingly arranged on the body. An axial all-open boss and an axial all-closed boss are arranged on the inner wall of the cable pulling seat, and a limiting boss is correspondingly arranged on the choke valve shaft. The choke valve mechanism is also provided with a choke valve return member, which is respectively connected to the choke valve shaft and the cable pulling seat; A cable joint, which is installed on the cable pulling seat and connected to the cable fixing mechanism; and A cable return member, which is sleeved on the outer surface of the cable pulling seat and respectively connected to the cable pulling seat and the body; Wherein, the cable return member is a cable torsion spring. The cable torsion spring is sleeved on the outer cylindrical surface of the cable pulling seat. One end of the cable torsion spring is clamped on the cable pulling seat, and the other end of the cable torsion spring is clamped on the body; The choke valve return member is a choke valve torsion spring. The choke valve torsion spring is sleeved on the choke valve shaft. One end of the choke valve torsion spring abuts against the choke valve shaft, and the other end of the choke valve torsion spring is clamped on the cable pulling seat.

2. The semi-automatic damper fuel supply system according to claim 1, characterized in that, The limiting boss is arranged on one side of the top end of the choke valve shaft.

3. The semi-automatic damper fuel supply system according to claim 1 or 2, characterized in that, The cable pulling seat is of a hollow cylindrical structure.

4. The semi-automatic air door fuel supply system according to claim 1 or 2, characterized in that, A joint installation part is arranged on the cable pulling seat, and the cable joint is fixed on the joint installation part through a joint installation hole.

5. The semi-automatic air door fuel supply system according to claim 4, wherein, The joint installation part is arranged on one side of the cable pulling seat, and the axis of the joint installation hole is parallel to the axis of the cable pulling seat.

6. The semi-automatic damper fuel supply system according to claim 4, characterized in that, The cable joint is fixed in the joint installation hole through a snap ring.

7. The semi-automatic damper fuel supply system according to claim 4, wherein A cable screw is arranged on the cable joint.

8. The semi-automatic air door fuel supply system according to claim 7, characterized in that, One end of the cable is fixed on the cable joint through the cable screw, and the other end of the cable passes through the cable fixing mechanism and is connected to an external control mechanism.

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