JPH072990Y2 - Actuator - Google Patents

Description

[Detailed description of the device] [The purpose of the device]

(Field of Industrial Application) The present invention relates to an actuator used as a drive source for a vehicle speed automatic control device. (Prior Art) As an actuator as described above, there are actuators having various structures conventionally, and among them, for example, Japanese Patent Laid-Open No.
There was an actuator having the structure described in Japanese Patent Laid-Open No. 62-233528. This actuator has a structure including a speed reduction mechanism that reduces the rotation of the motor, and an output mechanism that is driven by the final deceleration rotation of the speed reduction mechanism when the electromagnetic clutch operates. The deceleration mechanism includes an electromagnetic coil that forms a part of an electromagnetic clutch inside a worm wheel that serves as a final deceleration member. In the output mechanism, an armature plate that constitutes a part of an electromagnetic clutch attracted by the electromagnetic coil, and an output pulley that drives a throttle valve in conjunction with the armature plate via a spring plate, Is equipped with. Then, when the control circuit instructs the electromagnetic coil to be excited during vehicle speed control, the armature plate is attracted and the throttle valve is driven by the rotation of the motor so that the stored vehicle speed stored in the control circuit matches the actual vehicle speed. Do. (Problems to be solved by the invention) When the vehicle speed control of a two-wheeled vehicle is performed using the above-mentioned actuator, the two-wheeled vehicle performs a driving operation in a unique riding posture in which the accelerator grip is gripped. At
Returning the accelerator grip to the throttle closing direction is extremely effective as a method unique to motorcycles. However, in the above-described conventional actuator, when the accelerator grip is returned to the throttle closing direction during vehicle speed control, it is necessary to return with a force that overcomes the driving force of the actuator, so the vehicle speed control cannot be released by a quick operation. There was a problem. (Object of the Invention) Therefore, an object of the present invention is to provide an actuator capable of canceling the vehicle speed control by returning the accelerator grip with a slight force during vehicle speed control.

[Constitution of device]

(Means for Solving Problems) The actuator according to the present invention is connected to the throttle valve (5) and the throttle valve shaft (5a) of the throttle valve (5), and the throttle valve (5) can be manually opened and closed. First manual accelerator operating member (18),
It is used in a vehicle equipped with a second manual accelerator operating member (17) which is coupled to the manual accelerator operating member (18) of the above and operates the first manual accelerator operating member (18), and is used for the throttle valve shaft (5a). An actuator for automatically opening and closing the throttle valve (5) and automatically controlling the speed of the vehicle by being coupled to the actuator case (1a),
A motor (2) housed in the actuator case (1a), a shaft (20) supported by the actuator case (1a), a reduction mechanism (3) for reducing and transmitting the rotation of the motor (2), A first drive member (11) that is axially supported by the shaft (20) and rotates on the shaft (20) together with the reduction mechanism (3), and is also axially supported by the shaft (20) and faces the first drive member (11). Drive member (13) arranged in parallel
Is fixed on the first drive member (11), the second drive member (13) can be attached to and detached from the first drive member (11), and rotation of the first drive member (11) can be performed by the second drive member (13). ), And an electromagnetic clutch (4) for transmitting to the second drive member (13), and an actuator for controlling the rotation of the throttle valve (5) by the rotation of the second drive member (13). ) And a first driven member (14) that rotates integrally with
A second driven member (16) axially supported by the shaft (20), arranged to face the first driving member (14), and coupled to the throttle valve shaft (5a) of the throttle valve (5).
A clutch spring (15) elastically wound around the first driven member (14) and the second driven member (16);
A clutch that is fitted to the driven member (16) with a gap in the rotational direction, is coupled to the second manual accelerator operating member (18), and is wound around the first driven member (14). The third driven member (19) engaged with the end of the spring (15), the second driven member (16) and the third driven member (19), and the third driven member. An elastic member (33) for applying a biasing force to the (19), and the first manual accelerator operating member (18) is rotatably held on the throttle shaft (5a). I am trying. (Action of the Invention) In the actuator according to the present invention, when the second manual accelerator operating member (17) is returned when releasing the vehicle speed control, the second driven member (16) has a gap. Since the third driven member (19) engaged with is allowed to rotate in the returning direction by this clearance, the clutch spring (15) is loosely wound, and the first driven member (14) and the first driven member (14) 2 Disengage the interlocking with the driven member (16). Therefore, the second driven member (16) becomes free and the throttle valve (5) is returned to the closed state. (Example) Hereinafter, this invention is demonstrated based on drawing. 1 to 6 are views showing an embodiment of an actuator according to the present invention. FIG. 1 is a sectional view of an actuator, and in FIG. 1, 1 is an actuator. The actuator 1 has a structure including a speed reduction mechanism 3 that reduces the rotation of the motor 2 with a plurality of gears, and an output mechanism 6 that drives a throttle valve 5 when the electromagnetic clutch 4 operates. The output mechanism 6 includes a first drive member 11 with which a worm wheel 10 as a final drive member of the speed reduction mechanism 3 engages, and a second drive member 11 that interlocks with the first drive member 11 depending on the state of winding of the first clutch spring 12. Member 13 and this second drive member
A first driven member 14 which is driven in engagement with 13, and a second driven member 16 which is interlocked with the first driven member 14 and drives the throttle valve 5 depending on the winding state of the second clutch spring 15. And an output wire 18 serving as a first manual accelerator operating member that synchronizes with the rotation of an accelerator grip 17 serving as a second manual accelerator operating member by an accelerator wire 17a and a gap is formed in the second driven member 16. A third formed by insert molding in a state in which the second driven member 16 is rotatably fitted while being engaged in the state of having
And a driven member 19. The first and second drive members
11, 13 and the first and second driven members 14, 16 are rotatably fitted to the shaft 20, respectively. The electromagnetic clutch 4 is composed of an electromagnetic coil 21 and an armature plate 22 attracted by the electromagnetic coil 21. The electromagnetic coil 21 is housed in a solenoid case 25 and magnetizes the rotor 26 during excitation to attract the armature plate 22. The rotor 26
Are fitted to the first drive member 11 and rotate together with the first drive member 11. Further, the solenoid case 25 is the first
The fixing ring 25 is rotatably fitted to the drive member 11.
It is fixed to the actuator case 1a by a and does not synchronize with the first drive member 11. The armature plate 22 has a plate spring 27.
Is connected to the bush 28 via. One end of the first clutch spring 12 is fixed to the bush 28. When the bush 28 is attracted by the magnetization of the rotor 26, the bush 28 is fixed to the first drive member 11 at that position. The first clutch spring 12 has a second end at the other end.
The first and second driving members 11 and 13 are interlocked with each other while being fixed to the driving member 13 and being wound by the rotation of the first driving member 11. As shown in FIG. 2, the first driven member 14 is provided with a protrusion 14a on the circumferential side, and the protrusion 14a and the second drive member 14a.
By engaging with the protrusion 13a of the second drive member 13,
Works with. The second clutch spring (clutch spring) 15 is
One end is fixed to the third driven member 19, and the other end is engaged with the notch 30 of the third driven member 19 as shown in FIG. And the second driven member 16
And are linked. In the second driven member 16, the engagement recess 31 has a third driven member.
The engaging projections 32 of 19 are engaged with each other with a gap. The engagement at this time is caused by the urging force of the spring 33, which serves as an elastic member, acting in the counterclockwise direction during vehicle speed control.
As shown in the figure, the engaging concave portion 31 is in contact with the engaging convex portion 32 while being rotated counterclockwise. Further, the throttle valve shaft 5a of the throttle valve 5 is engaged with the second driven member 16. Then, the second driven member 16 interlocks the throttle valve 5 according to the rotation thereof. The throttle valve 5 is constantly urged by the return spring 35 in the valve closing direction. Next, the operation of the actuator 1 having the above structure will be described. Here, the case of application to a vehicle speed automatic control device for a two-wheeled vehicle will be described as an example. First, when the set switch of the automatic vehicle speed control device is turned on and then turned off, in response to this off operation, the vehicle speed at the time of the off operation is stored as a pulse signal proportional to the actual vehicle speed output from the vehicle speed sensor by the microcomputer. . The microcomputer calculates a set initialization corresponding to the stored vehicle speed and sends a command to the actuator 1. At the same time, a command from a microcomputer is input to the actuator 1 to excite the electromagnetic coil 21 and rotate the motor 2 in the throttle valve opening direction. At this time, when the electromagnetic coil 21 is excited, the rotor 26 is magnetized and attracts the armature plate 22, so that the rotor 26 and the bush 28 rotate together with the worm wheel 10. Then, the first clutch spring 12 whose one end is fixed to the bush 28 rotates together with the bush 28 to gradually reduce the inner diameter and rotate the second drive member 13 together with the first drive member 11. Further, when the second drive member 13 rotates, the second drive member 13
The protrusion 13a and the protrusion 14a of the first driven member 14 engage with each other.
Therefore, the rotation of the second drive member 13 causes the second driven member 16 to rotate via the second clutch spring 15 and the throttle valve 5 to rotate in the valve opening direction so that the actual vehicle speed and the stored vehicle speed match. Let In this state, the engaging concave portion 31 of the second driven member 16 and the engaging convex portion of the third driven member 19 in this state.
The spring 32 is engaged by the biasing force of the spring 33 in the state shown in FIG. After that, when the actual vehicle speed is higher than the stored vehicle speed, the microcomputer rotates the motor 2 in the throttle valve closing direction to rotate the throttle valve 5 in the valve closing direction to decrease the actual vehicle speed. If the actual vehicle speed is lower than the stored vehicle speed, the microcomputer rotates the motor 2 in the throttle valve opening direction and the throttle valve 5 in the valve opening direction to increase the actual vehicle speed. Therefore, the vehicle speed can be kept constant even if the traveling conditions of the vehicle change. When releasing the vehicle speed control, the accelerator grip 17 is slightly returned in the closing direction of the throttle valve with a force that overcomes the biasing force of the spring 33. At that time, the engaging concave portions 31 of the first and second driven members 14 and 16
From the engaged state shown in FIG. 4, the third driven member 19 rotates counterclockwise from the engaged state shown in FIG.
The engaged state shown in FIG. 6 is obtained. Therefore, as shown in FIG. 5, the second clutch spring 15 has a third end at the third position.
Since the driven member 19 is pushed by the notch 30 and rotated in the loosening direction, the first driven member 14 and the second driven member 16 cannot be interlocked with each other. Therefore, the second driven member 16 is in a free state, and the throttle valve 5 is rotated in the valve closing direction by the urging force of the return spring 35. At this time, even if the motor 2 rotates to drive the throttle valve 5, the power cannot be transmitted, and the system is completely canceled. Note that the actuator 1 can also release the vehicle speed control by a brake operation or a clutch operation, in addition to the above-described vehicle speed control release operation.

[Effect of device]

As described above, since the actuator according to the present invention has the above-described configuration, when the second manual accelerator operating member (17) is returned when releasing the vehicle speed control, the second driven element is driven. Since the third driven member (19), which is engaged with the member (16) with a gap, is allowed to rotate in the return direction by the gap, the clutch spring (15) is loosely wound, Since the first driven member (14) and the second driven member (16) are disengaged from each other, the second driven member (16) becomes free, and as a result, the throttle valve (5) is closed. Since it is always biased in the direction,
It is possible to return to the valve closed state. Therefore, 2
When applied to a wheeled vehicle, the second manual accelerator operating member (1
Since the return operation of 7) can be performed easily, the vehicle speed control can be released quickly even in the driving posture peculiar to a two-wheeled vehicle. Further, even when the second driven member (16) and the carburetor are directly connected to each other, the vehicle speed control can be released, and therefore, an excellent effect that the vehicle can be easily mounted even in a small space of a two-wheeled vehicle is obtained.

[Brief description of drawings]

1 is a sectional view showing a structure according to an embodiment of an actuator according to the present invention, FIG. 2 is a perspective view showing an engaged state of the second driving member and the first driving member of FIG. 1, and FIG. Is the first
FIG. 4 is a partially cutaway perspective view showing the interlocking state of the first driven member and the second driven member, and FIG. 4 is A of FIG. 1 in the vehicle speed control state.
-A sectional view taken along the line A, and Fig. 5 is a partial cutaway view showing the engaged state of the second clutch spring in the accelerator grip returning state,
FIG. 6 is AA of FIG. 1 in a state where the accelerator grip is returned.
It is a line sectional view. 1 ... actuator, 1a ... actuator case, 2 ...
Motor, 3 ... Reduction mechanism, 4 ... Electromagnetic clutch, 5 ... Throttle valve, 5a ... Throttle valve shaft, 11 ... First driving member, 13 ... Second driving member, 14 ... First driven member, 15 ... Clutch spring, 16 ... Second driven member, 17 ... Second manual accelerator operating member, 18 ... First manual accelerator operating member,
19 ... Third driven member, 20 ... Shaft, 33 ... Elastic member.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location F02D 29/02 301 B F16D 27/105

Claims (1)

[Scope of utility model registration request] 1. A throttle valve (5) and a throttle valve shaft (5) of the throttle valve (5).
a) a first manual accelerator operating member (18) capable of manually opening and closing the throttle valve (5), and a first manual accelerator operating member (18) It is used in a vehicle equipped with a second manual accelerator operating member (17) for operating the accelerator operating member (18), and is automatically connected to the throttle valve shaft (5a) to open and close the throttle valve (5). An actuator for automatically controlling the speed of the vehicle, comprising an actuator case (1a), a motor (2) housed in the actuator case (1a), and an actuator case (1a). A shaft (20), a reduction mechanism (3) for reducing and transmitting the rotation of the motor (2), and a shaft supported by the shaft (20) together with the reduction mechanism (3). A first drive member rotating on 20) (11), is supported on the shaft (20), said first driving member (1
1) A second drive member (13) arranged to face the first drive member (13), and the second drive member (13) fixed to the first drive member (11) and attached to and detached from the first drive member (11). And an electromagnetic clutch (4) for transmitting the rotation of the first drive member (11) to the second drive member (13), and the throttle valve (5) by the rotation of the second drive member (13). ) Is controlled by the shaft (20), the second drive member (1
3) a first driven member (14) that rotates integrally with the first driven member (1).
A second driven member (16), which is arranged facing the 4) and is coupled to the throttle valve shaft (5a) of the throttle valve (5); the first driven member (14); Driven members (16)
A clutch spring (15) elastically wound around the second driven member (16) is fitted into the second driven member (16) with a gap in the rotation direction, and the second manual accelerator operating member (18) And the first driven member (14).
A third driven member (19) engaged with an end portion of the clutch spring (15) wound above, the second driven member (16), and the third driven member (19).
And an elastic member (33) that applies an urging force to the third driven member (19), and the first manual accelerator operating member (18) is on the throttle valve shaft (5a). An actuator characterized in that it is rotatably held by.