JPH0444829Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a throttle opening switch, and in particular uses a throttle valve operation mechanism to easily and reliably accelerate or decelerate a vehicle internal combustion engine with a simple configuration. This invention relates to a detectable throttle opening switch.

[Prior Art] In a vehicle internal combustion engine, when the carburetor throttle valve is opened and closed by depressing the accelerator pedal during engine operation, the opening position and opening degree of the carburetor throttle valve are It is necessary to control the operation of auxiliary devices of the internal combustion engine (for example, fuel injection control mechanism, etc.) in accordance with the acceleration/deceleration state such as the speed at which the engine reaches the position, that is, in accordance with the engine operating state. Therefore, a device such as a throttle opening switch is provided to detect the opening/closing state of the carburetor throttle valve.

A device for detecting the opening/closing operating state of such a carburetor throttle valve is disclosed in, for example, Japanese Utility Model Application Publication No. 133132/1983. The system described in this publication improves the responsiveness of the internal combustion engine by opening a bypass valve provided in a bypass passage for a desired period of time during sudden acceleration/deceleration operation of the internal combustion engine.

[Problems to be solved by the invention] Conventionally, in order to detect the acceleration and deceleration of an internal combustion engine, for example, a device for detecting the level of the engine speed, a device for detecting the level of the intake air pressure, an accelerator pedal, etc. There is a device that detects the depression state or the throttle valve angle.

However, in the case of a device that detects high and low engine speeds, even if the throttle valve is fully closed, if the vehicle speed increases when driving downhill, the engine speed will increase and the internal combustion engine will not be able to accelerate or decelerate. There was an inconvenience that it could not be detected.

Furthermore, devices that detect the high and low levels of intake air pressure require electronic control components such as a pressure sensor that detects the intake air pressure and a computer that analyzes signals from this pressure sensor, making the configuration complex and expensive. There was an inconvenience.

Furthermore, in the case of a device that detects the depression state of the accelerator pedal or the throttle valve angle, it only detects the fully open or fully closed state of the throttle valve, and it is not possible to detect acceleration or deceleration between the fully open and fully closed states. There was a drawback that I couldn't do it. In order to eliminate this drawback, for example, in order to precisely detect the angle of the throttle valve,
When a large number of electrical contacts are provided, the structure is complicated and expensive.

[Purpose of the invention] Therefore, in order to eliminate the above-mentioned inconvenience, the purpose of the invention is to provide a holding member for the end of the extended shaft of the support shaft that swingably supports the operating arm of the throttle valve operating mechanism of a vehicle internal combustion engine. one end of the connecting shaft oriented coaxially with the extension shaft is fixed to the other side of the member base, A friction mechanism is connected to the other end of the connecting shaft, the center part of the holding member is arranged approximately parallel to the operating arm, and the distal end of the holding member is in contact with one surface in the swinging direction of the operating arm. An acceleration-side contact body located at a predetermined gap from one surface in order to move away from the other surface and a deceleration-side contact body located at a predetermined gap from the other surface in order to approach and separate from the other surface in the swinging direction of the operating arm are connected. between one side of the operating arm and the acceleration side contact body and/or
Alternatively, an elastic member may be interposed between the other surface of the operating arm and the deceleration side contact body in order to detect acceleration/deceleration for a predetermined time when the acceleration/deceleration movement of the operating arm is at a predetermined speed or higher. To provide a throttle opening switch which can easily and reliably detect acceleration/deceleration, has a simple configuration by eliminating the need for electronic control parts, is easy to install, and is inexpensive.

[Means for Solving the Problems] In order to achieve this objective, this invention provides an operating arm that opens and closes the throttle valve according to the depression state of the accelerator pedal, and a support shaft that is oriented at right angles to the operating arm. In a throttle valve operation mechanism for a vehicle internal combustion engine, which is swingably supported by the support member, an engagement member is provided in which an end of an extension shaft extending coaxially with the support shaft is formed on one side of a member base of the holding member. One end of a connecting shaft oriented coaxially with the extension shaft is fixed to the other side of the base of the member, and the other end of the connecting shaft has a friction member. A central part of the holding member is disposed substantially parallel to the operating arm, and a distal end of the holding member has a surface so as to come into contact with and separate from one surface in the swinging direction of the operating arm. an acceleration-side contact body located at a predetermined gap from the operating arm, and a deceleration-side contact body located at a predetermined gap from the other surface in a swinging direction of the operating arm so as to contact and separate from the other surface; Between one surface of the operating arm and the acceleration-side contact body and/or between the other surface of the operating arm and the deceleration-side contact body, there is an acceleration for a predetermined time when the acceleration/deceleration movement of the operating arm is at a predetermined speed or higher. It is characterized by interposing an elastic member to detect deceleration.

[Function] According to the configuration of this invention, when the operating arm of the throttle valve operating mechanism swings by depressing the accelerator pedal when accelerating the internal combustion engine, the swinging of the operating arm causes this operation to be performed. One surface of the arm comes into contact with the acceleration side contact body, an acceleration state is detected, and the acceleration side contact body moves to follow the operation of the operating arm, and then the acceleration side contact body is moved by the urging force of the elastic member. The body separates from one side of the operating arm.
On the other hand, when depressing the internal combustion engine, when the accelerator pedal is released, the operating arm swings, and as the operating arm swings, the other surface of the operating arm comes into contact with the deceleration side contact body, causing the engine to decelerate. is detected, and the deceleration side contact body moves following the operation of the throttle valve operating mechanism, and then the deceleration side contact body is separated from the other surface of the operating arm by the biasing force of the elastic member. Further, when the acceleration/deceleration of the operating arm is at a predetermined speed or higher, the presence of the elastic member allows the acceleration/deceleration to be detected for a predetermined period of time. Thereby, acceleration and deceleration of the internal combustion engine can be easily and reliably detected by small movements of the operating arm of the throttle valve operating mechanism, regardless of the position of the operating arm. Further, since electronic control parts and the like are not required, the configuration is simplified and installation can be facilitated.

[Example] Hereinafter, an example of this invention will be described in detail and specifically based on the drawings.

1 to 4 show examples of this invention. In the figure, 2 is a throttle valve operating mechanism of a vehicle internal combustion engine (not shown). This throttle valve operating mechanism 2 includes a first operating arm 6 whose one end side is fixed to an accelerator pedal 4, and a second operating arm 6 connected to the first operating arm 6 via a connecting rod 8 and to which an accelerator wire 10 is connected. It has an arm 12.

That is, the accelerator pedal 4 is fixed to the free end that is one end side of the first operating arm 6, and
A first support shaft 1 with the other end of the first operating arm 6 oriented in a direction perpendicular to the first operating arm 6.
4, that is, swingable (in the _X1 direction in FIG. 1).

A first engaging body 18 is formed projecting from the center of the first operating arm 6 to rotatably engage a first socket 16 at one end of the connecting rod 8.
A second socket 20 at the other end of the connecting rod 8 is rotatably engaged with a second engaging body 22 of the second operating arm 12.

Third engaging body 24 on the other end side of second operating arm 12
A wire-side socket 26 to which one end of the accelerator wire 10 is fixed is rotatably engaged. A throttle valve (not shown) is connected to the other end of the accelerator wire 10.

An arm base 12a located approximately at the center of the second operating arm 12 is rotatable by a second support shaft 28 that is oriented perpendicular to the second operating arm 12.
In other words, it is supported in a swingable manner. Therefore, the second
The operating arm 12 is divided into a second operating arm 12-1 on the accelerator wire 10 side and a second operating arm 12-2 on the accelerator pedal side about the second support shaft 28. The second operating arm 12-1 has a second support shaft 2
8 ( _X2 direction in Figure 1).
The second operating arm 12-2 is swung around the second support shaft 28 (in the _X3 direction in FIG. 1). In addition, the accelerator wire 10 is connected in the vertical direction (X ₄ direction in Fig. 1)
It moves back and forth. In other words, this throttle valve operating mechanism 2
is the first one depending on the depression state of the accelerator pedal 4.
The operating arm 6 and the second operating arm 12 are swung to open and close the throttle valve using the accelerator wire 10.

Therefore, in this throttle valve operation mechanism 2, for example, a detection mechanism 30 is attached to the second operation arm 12 as a throttle opening switch that detects acceleration and deceleration of the internal combustion engine. That is, for example, the second operating arm 12-1 on the accelerator wire 10 side of the second operating arm 12 has this second
When the operation arm 12-1 is not operating, the swing direction (X ₂
The acceleration side contact body 32 is disposed at a predetermined gap C from the top surface 12b so as to come into contact with and separate from the top surface 12b, which is one surface of the swing direction (X ₂ direction).
A deceleration side contact body 34 is disposed at a distance of a predetermined gap C from the lower surface 12c so as to come into contact with and separate from the lower surface 12c, which is the other surface (direction). This adjustment side contact body 3
2 and the deceleration side contact body 34 are the second operating arm 12
It is integrally constituted by a detection body 36 having a C-shaped cross section so as to sandwich the detection body 36 .

In this detection body 36, as shown in FIG. 3, an acceleration side contact 32a is provided on the inner surface of the acceleration side contact body 32.
is fixed to the inner surface of the deceleration side contact body 34, and a deceleration side contact 34a is fixed to the inner surface of the deceleration side contact body 34. The acceleration side contact 32a and the deceleration side contact 34a are connected to auxiliary equipment (not shown) of the internal combustion engine. This detection body 36 is located at a member tip 38 of a holding member 38.
It is connected to the c side.

The member central portion 38b of this holding member 38 is located at the second
As shown in the figure, it is arranged substantially parallel to the second operating arm 12-1.

Further, the member base 38a of this holding member 38 is
It is arranged in parallel with the arm base 12a of the second operating arm 12. On the other side of the member base 38a of the holding member 38, which is the side away from the second operating arm 12,
One end side of a connecting shaft 42 to which a friction mechanism 40 is connected to the other end side is fixed. As shown in FIG. 4, this connecting shaft 42 is located on the same axis (indicated by G) as the second support shaft 28.

An engagement hole 44 that rotatably engages the end 28e of the extension shaft 28a of the second support shaft 28 is formed on one side of the member base 38a, that is, the second operation arm 12 side. Therefore, the holding member 38 is supported by the end 28e of the extension shaft 28a of the second support shaft 28, and is independent of the rotation of the second support shaft 28.
It is provided so as to be rotatable in the vertical direction ( _X5 direction in Figure 2).

As shown in FIG. 4, the friction mechanism 40 includes a gear 50 fixed to the other end of the connecting shaft 42 and a highly viscous liquid 52, such as silicone oil, in a liquid chamber 48 formed in a housing 46. The holding member 38 is moved to follow the swinging motion of the second operating arm 12. Further, this friction mechanism 40 is fixed to the vehicle body by fixing a housing 46 to a part of the vehicle body (not shown).

Further, as shown in FIG. 3, as an example, there is a gap between the inner surface of the acceleration side contact body 32 and the upper surface 12b of the second operation arm 12-1. While maintaining a predetermined gap C between the upper surfaces 12b, the second operating arm 12-1
A spring 62, which is an elastic member, is interposed to detect the acceleration/deceleration for a predetermined period of time when the acceleration/deceleration operation is at a predetermined speed or higher.

Next, the operation of this embodiment will be explained.

When accelerating the internal combustion engine, press the accelerator pedal 4.
When you step on the first operating arm 6 in FIG.
is swung clockwise around the first support shaft 14, and the second operating arm 1 is rotated via the connecting rod 8.
2 is swung about the second support shaft 28 so as to pull the accelerator wire 10 and open the throttle valve. At this time, when the second operating arm 12 swings, the upper surface 12b of the second operating arm 12-1 resists the urging force of the spring 62, and the acceleration side contact 3 of the acceleration side contact body 32
2a, and thereby an acceleration state is immediately detected. Further, at this time, the holding member 38 rotates around the connecting shaft 42 following the clockwise rocking of the second operating arm 12-1. As a result, the acceleration side contact body 32 moves to the second operating arm 12-
1, the acceleration detection state can be maintained. This rotation of the holding member 38 causes the gear 50 to rotate against the resistance of the viscosity of the liquid 52. Then, when the second operating arm 12 becomes inactive and the engine reaches a constant speed state, the acceleration side contact body 32 is separated from the upper surface 12b of the second operating arm 12 by the biasing force of the spring 62, and the next acceleration/deceleration is performed. Wait to detect.

On the other hand, when decelerating the internal combustion engine, when the accelerator pedal 4 is released, the first operating arm 6 swings counterclockwise around the first support shaft 14 and returns to its original position in FIG. The second operating arm 12 swings counterclockwise around the second support shaft 28, and moves the throttle valve in the direction of closing via the accelerator wire 10. At this time, the second operating arm 1
2 swings, the lower surface 12 of the second operating arm 12
c comes into contact with the deceleration side contact 34a of the deceleration side contact body 34 against the biasing force of the stretched spring 62,
As a result, it is immediately detected that the vehicle is in a deceleration state. Further, at this time, the holding member 38 rotates around the connecting shaft 42 following the counterclockwise rocking of the second operating arm 12-1. Thereby, even after the deceleration side contact body 34 contacts the operation arm 12-1, the deceleration detection state can be maintained. This rotation of the holding member 38 causes the gear 50 to rotate in the liquid 52 in the same manner as described above. Further, when the second operating arm 12 becomes inactive and the internal combustion engine enters a constant speed state, the biasing force of the spring 62 causes the deceleration side contact body 34 to move toward the lower surface 12 of the second operating arm 12-1.
The vehicle moves away from c and waits to detect the next acceleration/deceleration.

Further, when the second operating arm 12-1 rotates at a predetermined speed during acceleration or deceleration of the internal combustion engine, the acceleration side contact body 32 or the deceleration side contact body 34 is attached to the second operation arm 12-1 with a spring. 62, and after a predetermined period of time, the acceleration-side contact body 32 or the deceleration-side contact body 34 is separated from the upper and lower surfaces of the second operating arm 12-1 by the urging force of the spring 62, and after a predetermined time has elapsed, Acceleration/deceleration states can be detected.

As a result, it becomes possible to detect acceleration and deceleration of the internal combustion engine by small movements of the second operating arm 12 of the throttle valve operating mechanism 2, and the acceleration and deceleration of the internal combustion engine can be detected reliably even when traveling downhill. Can be detected. Further, it is possible to easily detect acceleration and deceleration of the internal combustion engine regardless of the position of the second operating arm 12 (throttle valve opening degree).

Furthermore, according to the configuration of this embodiment, electronic control parts and the like are not required, so the configuration is simple, the detection mechanism 30 can be easily installed, and the cost can be reduced.

Note that this invention is not limited to the above-mentioned embodiments,
Of course, various applications and modifications are possible.

For example, as shown in FIG. 5, in the detection mechanism 30, the deceleration side contact body 34 and the second operating arm 12
A spring 62 may be interposed between the lower surface 12c of -1, or alternatively, as shown in FIG. It is also possible to interpose springs 62, 62 on both sides between 12-1. According to the configuration shown in FIG. 6, the acceleration side contact body 32 and the deceleration side contact body 34 can be quickly and reliably separated from the operating arm 12 by the urging force of the two springs 62, 62.

In addition, as shown in FIG. 1, the detection mechanism 30 (indicated by a two-dot chain line) is connected to the second operating arm 12-2 of the throttle valve operating mechanism 2, or alternatively, to the first operating arm 6.
It is also possible to attach it above, similar to the embodiments described above.

Furthermore, when the operation arm is in a non-operating state, the detection mechanism is located away from or in contact with the acceleration-side contact body or the deceleration-side contact body operation arm, and detects and applies pressure due to the next operation of the operation arm. It is also possible to provide a pressure sensitive switch to detect deceleration. That is,
For example, if the acceleration side contact body or the deceleration side contact body is separated from the operation arm, the pressure-sensitive switch senses the air pressure caused by the next operation of the operation arm, detects acceleration/deceleration, and also detects the acceleration or deceleration of the operation arm. When the acceleration side contact body or the deceleration side contact body is in contact with the acceleration side contact body or the deceleration side contact body, the pressing force due to the next operation of the operating arm is sensed, and acceleration/deceleration is detected.

Furthermore, it is also possible to configure the detection mechanism so that its electrical resistance changes depending on the pressing force caused by the operation of the operating arm. That is, when the acceleration-side contact body or the deceleration-side contact body contacts and presses the operation arm due to the operation of the operation arm, the electrical resistance changes in accordance with this pressing force, and acceleration/deceleration is detected. As a result, the operating arm accelerates, and acceleration is detected when the acceleration-side contact body is in pressure contact with the operating arm. Next, when the operating arm stops in an inactive state, the acceleration side contact body simply contacts the operating arm and does not detect acceleration. Then, when the acceleration is further accelerated, the operation arm accelerates, and the acceleration side contact body is strongly pressed by the operation of this operation arm, and the electrical resistance changes due to this strong pressing force, and the acceleration state is detected. It is possible to do so. On the other hand, during deceleration, the deceleration state is detected by a similar effect, so a description thereof will be omitted here.

[Effects of the invention] As is clear from the above detailed description, according to this invention, the end of the extended shaft of the support shaft that swingably supports the operating arm of the throttle valve operating mechanism of a vehicle internal combustion engine is attached to the holding member. one end of the connecting shaft oriented coaxially with the extension shaft is fixed to the other side of the member base, A friction mechanism is connected to the connecting shaft and the other end, the center part of the holding member is arranged approximately parallel to the operating arm, and the distal end of the holding member is in contact with one surface in the swinging direction of the operating arm. An acceleration-side contact body located at a predetermined gap from one surface in order to move away from the other surface and a deceleration-side contact body located at a predetermined gap from the other surface in order to approach and separate from the other surface in the swinging direction of the operating arm are connected. between one side of the operating arm and the acceleration side contact body and/or
Alternatively, an elastic member is interposed between the other surface of the operating arm and the deceleration side contact body in order to detect the acceleration/deceleration for a predetermined time when the acceleration/deceleration movement of the operating arm exceeds a predetermined speed, so that the throttle valve can be operated. To easily and reliably detect the acceleration and deceleration of an internal combustion engine even in small movements of an operating arm of a mechanism, regardless of the position of the operating arm.

Further, since electronic control parts and the like are not required, the structure is simple, the installation is easy, and the cost is low.

[Brief explanation of the drawing]

Figures 1 to 4 show examples of this invention; Figure 1 is a schematic diagram of the throttle valve operating mechanism with the detection mechanism attached; Figure 2 is a partial perspective view of the throttle valve operation mechanism with the detection mechanism attached. , FIG. 3 is an enlarged configuration diagram of the main part of the detection mechanism in which the acceleration side contact body and the deceleration side contact body are arranged, and FIG. 4 is a sectional view taken along the - line in FIG. 2. Figures 5 and 6 show other embodiments of this invention,
Fig. 5 is an enlarged configuration diagram of the main part in which a spring is interposed between the deceleration side contact body and the operating arm, and Fig. 6 is a spring between the acceleration side contact body and the operating arm, and between the deceleration side contact body and the operating arm. FIG. In the figure, 2 is a throttle valve operating mechanism, 4 is an accelerator pedal, 6 is a first operating arm, 10 is an accelerator wire, 12 is a second operating arm, 30 is a detection mechanism, 32 is an acceleration side contact body, and 34 is a deceleration side contact body,
36 is a detection body, 38 is a holding member, and 40 is a friction mechanism.

Claims (1)

[Scope of utility model registration request] In a throttle valve operating mechanism for a vehicle internal combustion engine, in which an operating arm for opening and closing a throttle valve in accordance with the depression state of an accelerator pedal is swingably supported on a supporting shaft oriented at right angles to the operating arm, the supporting shaft An end of an extension shaft extending coaxially with the holding member is rotatably engaged with an engagement hole formed on one side of the member base of the holding member, and the extension shaft is provided on the other side of the member base of the holding member. One end side of a connecting shaft oriented on the same axis as the shaft is fixedly provided, a friction mechanism is connected and provided on the other end side of the connecting shaft, and the central part of the holding member is arranged substantially parallel to the operating arm. The holding member has an acceleration-side contact body positioned at a predetermined gap from one surface of the operating arm in the swinging direction, and an acceleration-side contact body positioned at a predetermined gap from one surface of the operating arm in the swinging direction so as to be in contact with and separating from one surface of the operating arm in the swinging direction. A deceleration side contact body positioned at a predetermined gap from the other surface so as to come into contact with and separate from the other surface is connected, and between one surface of the operation arm and the acceleration side contact body and/or between the other surface of the operation arm. A throttle opening switch characterized in that an elastic member is interposed between the deceleration side contact bodies so as to detect acceleration/deceleration for a predetermined time when the acceleration/deceleration movement of the operating arm is at a predetermined speed or higher.