Operating mechanism of gasoline engine accelerator

Abstract

The utility model belongs to the technical field of gasoline engines, and relates to a control mechanism of a gasoline engine accelerator, which comprises a handgrip for holding and an accelerator cable for controlling the opening degree of the accelerator, and is characterized in that a main handle and an auxiliary handle which are distributed up and down are hinged below the handgrip and are connected into a whole through a distance adjusting mechanism; the front end of the auxiliary handle is connected with the accelerator cable fixing end, and when the rear end of the main handle or the auxiliary handle rotates towards the handlebar, the front end of the auxiliary handle generates displacement and pulls the accelerator to generate opening degree change. According to the control mechanism of the gasoline engine accelerator, the local opening degree and the full opening state of the accelerator can be conveniently switched.

Description

Technical Field

[0001] The utility model belongs to the technical field of gasoline engines and relates to a throttle operating mechanism of a gasoline engine. Background Art

[0002] At present, most of the handheld single-cylinder gasoline engines in the domestic and foreign markets work in the state of full throttle opening. In order to save fuel when the load is not large, a control handle for controlling the throttle opening of the gasoline engine is designed. The control handle includes a handle for holding, and a rocker arm for adjusting the throttle opening is arranged in the front end of the handle. The rocker arm can rotate in a vertical plane around the upper end of the rocker arm, and the lower end of the rocker arm is connected to the throttle cable, which is connected to the throttle of the gasoline engine. The front end of the handle is hinged with a throttle handle, and the throttle handle can push the lower end of the rocker arm to move forward around the upper end of the rocker arm. This control handle can only partially loosen the throttle handle by human touch, and the throttle opening is controlled by the operator's touch, so as to achieve fuel-saving operation. However, this method has high requirements on the operator's touch. Holding in the air will make the palm very tired, and it is difficult to keep the throttle handle at the same opening for a long time in the palm holding state. Such control means easily cause the engine speed to fluctuate up and down, which is difficult to control.

[0003] The Chinese invention patent application with publication number CN 107387244 A (publication date: 2017-11-24) discloses a technical solution of "a control handle for a gasoline engine". This solution can effectively control the throttle opening of the gasoline engine and avoid operator fatigue. It is very unique. However, when the throttle opening is fixed by a sliding shaft, the fixation is unreliable and the shaft slides due to the large vibration of the machine during operation, which causes fluctuations in the engine speed. Moreover, without adjusting the throttle opening, the two states of fixed throttle opening and full opening cannot be switched arbitrarily. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a gasoline engine throttle operating mechanism, which can conveniently switch the throttle partial opening and full opening states.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0006] A gasoline engine throttle operating mechanism comprises a handle for holding and a throttle cable for controlling the throttle opening, characterized in that a main handle and a sub-handle are hingedly connected below the handle and are distributed up and down, the main handle and the sub-handle are connected as a whole through a spacing adjustment mechanism, the front end of the sub-handle is connected to the fixed end of the throttle cable, and when the rear end of the main handle or the sub-handle is rotated toward the handle, the front end of the sub-handle is displaced and pulls the throttle to change the opening.

[0007] In the above-mentioned gasoline engine throttle operating mechanism, the spacing adjustment mechanism includes an adjusting rod and an opening spring. The adjusting rod passes through a through slot on the auxiliary handle and is screwed and fixed to the main handle. The opening spring is sleeved on the adjusting rod, and its two ends respectively contact the main handle and the auxiliary handle.

[0008] In the above-mentioned gasoline engine throttle operating mechanism, the adjusting rod passes through the auxiliary handle from bottom to top, the rod cap of the adjusting rod is connected to the bottom of the auxiliary handle, and a limiting step that contacts the opening spring is provided in the through groove of the auxiliary handle.

[0009] Alternatively, in the above-mentioned gasoline engine throttle operating mechanism, the distance adjustment mechanism includes: slots are provided on the auxiliary handle and the main handle, a rod connecting the auxiliary handle and the main handle is inserted in the slot, the rod is fixedly connected to the auxiliary handle and slidably connected to the main handle, a number of corresponding sockets are provided on the rod and the main handle, pins can be selectively inserted into the sockets, and when the pins are inserted into different sockets, different distances are provided between the auxiliary handle and the main handle.

[0010] Alternatively, in the above-mentioned gasoline engine throttle operating mechanism, the distance adjustment mechanism includes a screw rod and an opening spring, the screw rod passes through the main handle and the auxiliary handle from top to bottom, the opening spring is sleeved on the screw rod, and its two ends respectively contact the main handle and the auxiliary handle, the main handle is provided with a countersunk hole that cooperates with the screw rod head, and a nut threaded on the screw rod is provided below the auxiliary handle, and the distance between the main handle and the auxiliary handle changes when the nut is turned.

[0011] In the above-mentioned gasoline engine throttle operating mechanism, the dimension of the auxiliary handle along the length direction of the handle is smaller than that of the main handle.

[0012] In the above-mentioned gasoline engine throttle operating mechanism, a T-shaped shoulder shaft is arranged in the handle, the main handle and the auxiliary handle are hinged on the T-shaped shoulder shaft, and the hinge point of the auxiliary handle is located in the middle thereof.

[0013] In the above-mentioned gasoline engine throttle operating mechanism, a limiting mechanism for preventing the main handle from returning to the initial state is arranged on the handle, and the limiting mechanism can selectively act on the main handle.

[0014] In the above-mentioned gasoline engine throttle operating mechanism, the limiting mechanism includes a throttle lock block, one end of the throttle lock block is hinged on one side of the handle, the throttle lock block is clearance-matched with the T-shoulder shaft and is provided with a reset spring, the other end of the throttle lock block is a movable end and is provided with a hook, the hook is selectively connected to the main handle, and when the hook is connected to the main handle, it prevents it from resetting to the initial state.

[0015] Alternatively, in the above-mentioned gasoline engine throttle operating mechanism, the limit mechanism includes a limit pin slidably set on the handle, and when the limit pin slides out, the main handle is reset until it conflicts with the limit pin, and when the limit pin slides in, the main handle can be reset to its initial state.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model provides a gasoline engine throttle operating mechanism, which is provided with a main handle and a sub-handle associated therewith. When the distance between the main handle and the sub-handle is different, the displacement of the sub-handle driven by the main handle is the same, so the displacement of the fixed end of the throttle cable and the resulting throttle opening are also different. Therefore, by adjusting the distance between the main handle and the sub-handle, the partial throttle opening and the full opening state can be conveniently switched, and the size of the partial throttle opening can also be adjusted.

[0018] 2. The utility model forms a spacing adjustment mechanism through an adjustment rod and an opening spring, and a dynamic connection structure is formed between the main handle and the auxiliary handle. When it is necessary to switch to a full throttle state, it is no longer necessary to adjust the spacing adjustment mechanism. The auxiliary handle can be tightly gripped to form a full throttle state.

[0019] 3. The utility model further provides a limit mechanism that prevents the main handle from resetting to the initial state, realizing the function of setting the pre-fueling opening with one button. This solves the technical problem that the engine is difficult to start in a cold and low temperature environment, and often requires a small pre-opening of the throttle to start the engine quickly and smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model in the initial state (throttle fully open mode);

[0021] Figure 2 It is a schematic diagram of the structure of the utility model in the initial state (partial throttle opening mode);

[0022] Figure 3 This is a schematic diagram of the structure of the utility model in a fully open throttle state;

[0023] Figure 4 It is a structural schematic diagram of the partial opening state of the throttle of the utility model;

[0024] Figure 5 It is a side structural schematic diagram of the utility model;

[0025] Figure numerals: 1. Handlebar; 2. Throttle cable; 3. Main handle; 4. Auxiliary handle; 5. Throttle cable fixed end; 6. Adjustment rod; 7. Opening spring; 8. T-shoulder shaft; 9. Throttle lock block; 10. Reset spring; 11. Hook. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings. Figure 1-5 :

[0027] A gasoline engine throttle operating mechanism comprises a handle 1 for holding and a throttle cable 2 for controlling the throttle opening, characterized in that a main handle 3 and a sub-handle 4 are hingedly connected below the handle 1 and are distributed up and down, the main handle 3 and the sub-handle 4 are connected as a whole through a spacing adjustment mechanism, the front end of the sub-handle 4 is connected to a fixed end 5 of the throttle cable, and when the rear end of the main handle 3 or the sub-handle 4 is rotated toward the handle 1, the front end of the sub-handle 4 is displaced and pulls the throttle to change the opening.

[0028] The working method of this embodiment is: the auxiliary handle 4 is hinged to the hinge axis, the engine throttle has tension, the throttle fixed end on the throttle cable 2 is connected to the auxiliary handle 4, and when the throttle is in the initial state, that is, when the operator does not hold the handle 1, the throttle tension acts on the auxiliary handle 4 through the throttle cable 2, and the front end of the auxiliary handle 4 is close to the handle 1. When the handle 1 and the auxiliary handle 4 are held tightly, the auxiliary handle 4 rotates around the hinge axis. When the handle 1 and the main handle 3 are held tightly, the main handle 3 rotates around the hinge axis.

[0029] The working principle of this embodiment is: when the gasoline engine throttle control handle is working, by tightening and releasing the handle 1, the main handle 3 and the auxiliary handle 4, the throttle fixed end installed on the auxiliary handle 4 is respectively located at point A, point B and point C, and the throttle fixed end is displaced through the throttle cable 2, and the throttle is pulled to produce different openings. Point A is the initial position of the throttle, and the throttle is not opened. Point B is between point A and point C, and the throttle is partially opened. Point C is the maximum displacement point of the throttle fixed end, and the throttle is fully opened. If the fuel saving mode is required and the throttle is not fully opened, a distance is generated between the main handle 3 and the auxiliary handle 4 through the distance adjustment mechanism (as shown in the attached figure). Figure 2 (as shown in the figure), hold the handle 1 tightly, hold the main handle 3 until it is in close contact with the handle 1, the auxiliary handle 4 rotates with the main handle 3, the throttle fixed end moves to point B, and the throttle is partially opened (as shown in the figure). Figure 4 If the throttle needs to be fully opened, the main handle 3 and the auxiliary handle 4 should be placed close together through the spacing adjustment mechanism (see the attached Figure 1 (as shown in the figure), hold the handle 1 and the main handle 3 tightly, the main handle 3 is close to the handle 1, the throttle fixed end reaches point C, and the throttle is fully opened (as shown in the figure). Figure 3 ), release the main handle 3, the throttle fixed end returns to point A, and the throttle is closed to the initial position.

[0030] In this embodiment, the spacing adjustment mechanism includes an adjusting rod 6 and an opening spring 7. The adjusting rod 6 passes through a through slot on the auxiliary handle 4 and is screwed and fixed to the main handle 3. The opening spring 7 is sleeved on the adjusting rod 6, and its two ends respectively contact the main handle 3 and the auxiliary handle 4.

[0031] Furthermore, the adjusting rod 6 passes through the auxiliary handle 4 from bottom to top, the rod cap of the adjusting rod 6 is connected to the bottom of the auxiliary handle 4 in abutment with each other, and a limiting step that abuts against the opening spring 7 is provided in the through groove of the auxiliary handle 4 .

[0032] In this embodiment, the working mode of the spacing adjustment mechanism is: rotate the adjustment rod 6 clockwise, the auxiliary handle 4 and the main handle 3 are pressed tightly, and the opening spring 7 is compressed; rotate the adjustment rod 6 counterclockwise, the auxiliary handle 4 and the main handle 3 are separated, a spacing is generated, and the opening spring 7 is stretched. In this embodiment, the rotation range of the main handle 3 is between the handle 1 and the auxiliary handle 4, and the rotation range of the auxiliary handle 4 is between the front end to the handle 1 and the rear end to the main handle 3. Through the spacing adjustment mechanism of this embodiment, the operation of fully opening the throttle in the partial throttle opening mode can also be realized: directly hold the handle 1 and the auxiliary handle 4, during which the main handle 3 first presses against the handle 1, and the fixed end of the throttle reaches point B, and then the auxiliary handle 4 continues to move and presses against the main handle 3, and the fixed end of the throttle reaches point C, and the throttle is fully opened.

[0033] In order to facilitate holding the main handle 3 or the auxiliary handle 4 tightly, the auxiliary handle 4 is smaller than the main handle 3 along the length direction of the handle 1 .

[0034] In this embodiment, the hinge axis of the main handle 3 and the auxiliary handle 4 is a T-shaped shoulder axis 8: a T-shaped shoulder axis 8 is arranged inside the handle 1, the main handle 3 and the auxiliary handle 4 are hinged on the T-shaped shoulder axis 8, and the hinge point of the auxiliary handle 4 is located in the middle thereof.

[0035] This embodiment also provides a one-key setting function for the pre-fueling opening:

[0036] The handle 1 is provided with a limiting mechanism for preventing the main handle 3 from returning to the initial state, and the limiting mechanism can selectively act on the main handle 3 .

[0037] Compare with Figure 5 Furthermore, the limiting mechanism includes a throttle lock block 9, one end of the throttle lock block 9 is hinged on one side of the handle 1, the throttle lock block 9 is clearance-matched with the T-shoulder shaft 8 and is provided with a reset spring 10, the other end of the throttle lock block 9 is a movable end and is provided with a hook 11, the hook 11 is selectively connected to the main handle 3, and when the hook 11 is connected to the main handle 3, it prevents it from resetting to the initial state.

[0038] The working process is: hold the main handle 3 tightly, press the movable end of the throttle lock block 9, the hook 11 of the movable end of the throttle lock block 9 hooks the main handle 3, so that the main handle 3 cannot return to the initial position, and at the same time the movable end of the throttle lock block 9 moves inward, the return spring 10 is compressed, and an elastic force is generated. Hold the main handle 3 tightly again, the hook 11 of the movable end of the throttle lock block 9 disengages from the main handle 3, and the movable end of the throttle lock block 9 moves outward under the action of the elastic force of the return spring 10, and the throttle lock block 9 returns to the initial position.

[0039] When the gasoline engine is started from a cold state, a higher idle speed is required, that is, a slightly pre-opened throttle is required. Hold the handle 1 and the main handle 3, and the fixed end of the throttle moves from point A to point C. Press the movable end of the throttle lock block 9, release the handle 1 and the main handle 3, and the hook 11 on the throttle lock block 9 hooks the main handle 3. The fixed end of the throttle moves toward point A, but cannot return to point A. There is a slight displacement from point A and the distance is fixed. In this way, the throttle has a slight opening, the idle speed is increased, and the engine is easier to start.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gasoline engine throttle operating mechanism, comprising a handle (1) for holding and a throttle cable (2) for controlling the throttle opening, characterized in that: A main handle (3) and a sub-handle (4) are hingedly connected to the lower part of the handle (1), and the main handle (3) and the sub-handle (4) are connected to each other through a spacing adjustment mechanism. The front end of the sub-handle (4) is connected to a throttle cable fixed end (5). When the rear end of the main handle (3) or the sub-handle (4) is rotated toward the handle (1), the front end of the sub-handle (4) is displaced and pulls the throttle to change the opening.

2. A gasoline engine throttle operating mechanism according to claim 1, characterized in that: The spacing adjustment mechanism comprises an adjustment rod (6) and an opening spring (7); the adjustment rod (6) passes through a through slot on the auxiliary handle (4) and is screwed and fixed to the main handle (3); the opening spring (7) is sleeved on the adjustment rod (6), and its two ends are respectively in contact with the main handle (3) and the auxiliary handle (4).

3. A gasoline engine throttle operating mechanism according to claim 2, characterized in that: The adjusting rod (6) passes through the auxiliary handle (4) from bottom to top, the rod cap of the adjusting rod (6) is connected to the bottom of the auxiliary handle (4) in abutment with each other, and a limiting step is arranged in the through groove of the auxiliary handle (4) to abut against the opening spring (7).

4. A gasoline engine throttle operating mechanism according to claim 1, characterized in that: The dimension of the auxiliary handle (4) along the length direction of the handle is smaller than that of the main handle (3).

5. A gasoline engine throttle operating mechanism according to claim 1, characterized in that: A T-shaped shoulder shaft (8) is arranged inside the handle (1), the main handle (3) and the auxiliary handle (4) are hinged on the T-shaped shoulder shaft (8), and the hinge point of the auxiliary handle (4) is located in the middle thereof.

6. A gasoline engine throttle operating mechanism according to claim 5, characterized in that: The handle (1) is provided with a limiting mechanism for preventing the main handle (3) from returning to an initial state, and the limiting mechanism can selectively act on the main handle (3).

7. A gasoline engine throttle operating mechanism according to claim 6, characterized in that: The limiting mechanism comprises a throttle lock block (9), one end of the throttle lock block (9) is hinged to one side of the handle (1), the throttle lock block (9) is clearance-matched with the T-shaped shoulder shaft (8) and is provided with a reset spring (10), the other end of the throttle lock block (9) is a movable end and is provided with a hook (11), the hook (11) is selectively connected to the main handle (3), and when the hook (11) is connected to the main handle (3), it prevents the main handle (3) from being reset to an initial state.

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