JP3386317B2 - Manual operation mechanism of electric drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a manual operation mechanism which is indispensable in an emergency such as an electric power failure in an electric valve, an electric home appliance and other electric drive devices.

[0002]

2. Description of the Related Art It is well known that manual operation in an emergency should be taken into consideration in an antifreeze valve driving device, etc., and Japanese Patent Application No. 7-146970 has been proposed as an improvement in operability and reliability. ing.

Regarding the technique of the above-mentioned prior application, the details of a conventionally known example have been described in detail in the above-mentioned prior application, but the description thereof will be omitted. However, as shown in FIGS. 4 and 5, the casing of the electric drive device 1 is described. The reduction mechanism installed inside 2 is a so-called planetary gear mechanism, and external teeth 12-2 are formed on the outer peripheral surface of the cylindrical portion 12 forming the internal gear of the planetary gear mechanism. −
2 is connected to the manually operated knob 4 via the idle gear 13 and the internal gear 3-2 provided on the inner peripheral surface of the cylindrical portion of the movable member 3 that is loosely fitted to the inner peripheral surface of the housing, As shown, a rotation lock mechanism is provided which can be released by axial movement of the manual operation knob 4. The rotation lock mechanism has a non-circular fitting hole formed in the bottoms of the housing 2 and the movable member 3, and a manual operation knob. 4 and a non-circular fitting projection portion 4-11 which is integrally formed with the non-circular fitting hole and which is loosely fitted, and is formed inside the housing 1 and the movable member 3 together with the control circuit 6. At the rear part of the rotor shaft of the driving electric motor 5 arranged, a brake shoe 7 is provided which can be attached / detached to / from a brake shoe provided at the front end part of the boss 4-1 of the manually operated knob 4, and the housing. Two
The joint between the manual operation knob 4 and the load device is constructed so as to maintain airtightness, thereby realizing unprecedented improvement in operability and reliability.

However, in terms of practical use, in the above-mentioned configuration, the operability in manual operation is good in an emergency regardless of the speed ratio of the reduction gear installed, and the operability in manual operation is high. Although the operating force is transmitted to the load side without omission, an efficient manual operation is realized. For example, when applied to the above antifreeze valve drive device, etc., the drive device main body and the electric drive that controls it are usually used. Since it is generally installed separately from the device, there is only means for confirming the drive device main body in the operating direction of the drive device main body, and there has been a demand for confirmation means with the permission of the electric drive device.

[0004]

Means for Solving the Problems In a manual operation mechanism of an electric drive device according to the present invention, a manual operation mechanism including a turn lock mechanism that is fitted in a circumferential direction at a predetermined play angle so as to be freely separable and contactable, A position mark corresponding to the play angle in the circumferential direction is formed and displayed on the manually operated knob facing surface portion outside the bottom surface of the housing. The manual operation mechanism has a small-diameter hole 2-12 at the center of the bottom surface and a fan-shaped fitting recess communicating with the hole 2-12.
A housing 2 including A2-11 , a driving electric motor 5, a speed reducing mechanism connected to the driving electric motor 5, and a rotatably arranged inner peripheral surface of the housing engaging with the speed reducing mechanism. And the fan-shaped fitting concave portion A2-11 of the housing 2 at the center of the bottom surface thereof .
In the facing area, communicate with the small diameter hole 3-12,
The angle seen from both ends of the fan-shaped fitting recess A2-
Movable with fan-shaped fitting recess B3-11 smaller than 11
Sector and member 3, which may be fitted to leave circumferential angle of play θ from said fan-shaped fitting recess A2-11 housing 2 with loosely fitted with fan-shaped fitting recess B3-11 of the movable member 3 Mating protrusion
4-11 is provided with a manual operation knob 4 that is integrally formed or integrally held, and by making the manual operation knob 4 axially movable, a revolvable rotation lock mechanism is configured, and a circle of the rotation lock mechanism is provided. A play angle θ in the circumferential direction is integrally formed with or held integrally with the manually-operated knob 4, and the center of each of the two ends
Two axially symmetrical fan-shaped fitting protrusions with an angle of 80 ° or less
The part 4-11 and both of the parts formed on the housing 2 from the center thereof.
Two fan-shaped mating recesses or holes, with an angle of approximately 90 ° as seen between the ends , are configured to be obtained by mating with the holes.

[Work]

The manual operating mechanism according to the present invention is applied to, for example, the above antifreeze valve driving device and the like, and even if the driving device main body and the electric driving device for controlling the driving device main body are installed separately from each other, the manual operation mechanism is manually operated. By rotating the operation knob, it becomes possible to confirm the operation direction of the drive device main body with the manual operation mechanism portion of the electric drive device.

[0006]

FIG. 1 is an explanatory view showing a state in which a manual operation knob 4 which is an essential part of a manual operation mechanism of an electric drive device according to the present invention and a housing 2 are loosely fitted in a circumferential direction with play. The boss 4 which is integrally or integrally held with the operation knob 4.
-1 comprises a sector engagement projection 4-11 axisymmetric on its outer peripheral surface, disjunctive freely in axial movement of the manual operating knob 4, fitted sector formed on the bottom surface 2-1 of the housing 2 Joint recess A2-1
It is designed to fit with 1 . And said fan-shaped fitting recess
As shown in the figure, the A2-11 and the fan-shaped fitting projection 4-11 have a play of θ which is the difference in angle between the ends of the A2-11 and the fan-shaped fitting projection 4-11. That is, the play angle: θ is provided between the housing 2 which is a positioning member for the turn lock and the manual operation knob 4 in a normal electric operation of the electric drive device main body.
Alternates with each opening and closing operation. The movable member 3, which is a part of the power transmission mechanism of the manual operation mechanism, has a fan-shaped fitting formed on the bottom surface of the movable member 3 as shown in FIG.
If recess A2-11 and shape similar but Karaso its center
The angle between both ends of the fan- shaped fitting recess B3 is substantially equal to that of the fan- shaped fitting protrusion 4-11 integrated with the manual operation knob 4.
11 is formed so that they can be fitted in a loose fit state with no play. This is because the movable member 3, which is an internal mechanical portion of the manual operation mechanism, and the manual operation knob 4 are always connected in a state in which there is no play in the circumferential direction, and this is turned by the axial movement of the manual operation knob 4. This is because they are loosely fitted so as to contribute only to opening and closing of the lock.

FIG. 3 shows a state of the manual operation knob 4 as seen from the outside front side. The outer peripheral cylindrical portion of the housing 2 is shown in FIG.
Small diameter formed in the center of the bottom surface 2-1 communicating with 2-2
2-12 of the fan and a fan-shaped fitting recess A2-11 communicating therewith
And a fan-shaped fitting protrusion 4-11 integrated with the manual operation knob 4 corresponding to the play angle θ that is the angle between the ends of the fan-shaped fitting projection 4-11 and the outer edge of the manual operation knob 4. On the outside of the bottom surface 2-1 of the housing 2 facing each other, marks 4-2 and 4-3 indicating the open / closed state associated with the operation of the electric drive device are formed and displayed.

The operation of the manual operation mechanism of the electric drive system according to the present invention will be described. FIG. 5 shows the main part of the manual operation state in which the manual operation knob 4 is pushed rightward,
The fan-shaped fitting protrusion portion 4-11 of the manual operation knob 4 of the housing 2 is
The fitting with the fan-shaped fitting recess A2-11 is released, and the movable member 3
Only the fan-shaped fitting recess B3-11 is fitted, and the tip brake shoe of the boss 4-1 of the manual operation knob 4 contacts the brake plate 7 of the electric motor to stop the rotation of the electric motor 5. In the state shown in FIG. 5, when the manual operation knob 4 is rotated, the rotation of the manual operation knob 4 is transmitted to the movable member 3, and the rotation of the movable member 3 is transferred to the cylindrical member 12 via the idle gear 13 as shown in FIG. On the other hand, the rotor of the electric motor 5 is constrained, so that the sun gear 9 is constrained to rotate the load device 14 via the planetary gear 11.

Next, the operation of electric operation of the electric drive device according to the present invention will be described. The state shown in FIG. 4 is the manual operation knob 4.
Shows the state of electric operation when pulled out to the left. In this state, the fan-shaped fitting projection integrated with the manual operation knob 4 is shown.
The portion 4-11 communicates with the fan-shaped fitting recess A2-11 of the housing 2 and the small diameter hole 3-12 in the center of the bottom surface 3-1 of the movable member 3.
And the fan-shaped fitting recess B3-11 formed so as to fit . As shown in FIG. 1, there is a play angle θ between the fan-shaped fitting recess A2-11 provided in the housing 2 and the fan-shaped fitting projection 4-11 integrated with the manual operation knob 4.
On the other hand, as shown in FIG. 2, a fan-shaped fitting provided on the movable member 3
A fan-shaped fitting protrusion integrated with the recess B3-11 and the manual operation knob 4.
The part 4-11 is fitted with almost no play angle.

[0010] While the rotation of the motor 5 when driving the electric motor 5 in this state is to drive the load device 14 through the planetary gear mechanism in a predetermined direction, the rotation of the motor 5 before it is round
The rotor gear 8 of the electric motor fastened to the trochanter shaft and the gear
The cylindrical portion 12 provided with the internal gear 12-1 that is transmitted to the sun gear 9 and the planetary gear 11 that are integral with the matching gear forming portion 9-1 and that meshes with the planetary gear 11 rotates, and the cylindrical portion 1
Idle gear 1 that meshes with external gear 12-2 provided on
3 meshes with the internal gear 3-2 of the movable member 3, the movable member 3 is rotated and the fan-shaped fitting concave portion of the movable member 3 is rotated.
Fan-shaped integral with the manually operated knob 4 that is fitted to the part 3-11
Since the fitting protrusion 4-11 rotates integrally with the movable member 3, it is confirmed that the manual operation knob 4 is rotating with respect to the housing 2 along with the rotation direction.

However, in this state, the load device 14 has not started to rotate. That is, the fan-shaped fitting portion A2 of the housing 2
-11 for manual operation knob 4 and integral fitting protrusion 4-1
1 rotates, and eventually the play angle θ becomes zero. When the rotation of the manual operation knob 4 integrated with the fitting protrusion 4-11 stops, the movable member 3 also stops and the rotation of the electric motor 5 is reduced by the planetary gear type speed reduction mechanism. The load device 14 is output via the load device 14 and is rotated. The index of the manual operation knob 4 indicates the position of the position mark 4-2 or 4-3 displayed on the surface of the housing 2 and indicates in which direction it is rotated.

[0012]

According to the manual operation mechanism of the electric drive device of the present invention, even if the drive device body to be driven and the electric drive device for controlling the drive device body are installed separately from each other, the drive device main body is opened and closed. You can check the closed state and the direction of operation with the manual operation mechanism of the electric drive.

[Brief description of drawings]

1 is an example of a manual operation mechanism of an electric drive device according to the present invention, a fan-shaped fitting concave portion A2-11 of a housing for giving a circumferential play and a fan-shaped fitting protrusion portion 4-11 of a manual operation knob.
FIG . 6 is a view for explaining the fitted state of FIG . 6 when the bottom surface of the housing is viewed from the inside .

[Fig. 2] Corresponding to Fig. 1, a fan-shaped fitting recess B of the movable member.
3-11 and the fan-shaped fitting protrusion 4-11 for manual operation
FIG. 13 is a diagram for explaining the fitted state of the movable member as viewed from the inside of the bottom surface of the movable member .

FIG. 3 is a view showing a position display mark formed and displayed on the outside of the bottom surface of the housing so as to face the manual operation knob.

FIG. 4 is an explanatory diagram of an example of a manual operation mechanism of an electric drive device that is conventionally known and is also applied to the present invention.

FIG. 5 is a diagram for explaining turning lock opening / closing in the example of FIG. 4;

[Explanation of symbols]

1 Electric drive 2 housing 2-1 Bottom of the housing 2-11 Formed on the bottom of the housingFan-shaped fitting recess A 2-12 Holes formed on the bottom of the housing 2-2 Outer cylindrical portion of the housing 3 movable members 3-11 Bottom of movable member 3-11 Formed on the bottom surface of the movable memberFan-shaped fitting recess B 3-12 Holes formed on the bottom surface of the movable member 3-2Internal gear of cylindrical part of movable member 4 Manual operation 4-1 Picking boss 4-11 Fan-shaped fitting protrusions on the outer peripheral surface of the boss 4-2 Mark indicating the release position 4-3 Mark indicating closed position 5 Drive motor 6 control circuit 7 brake plate 8 Electric motor rotor gears 9 sun gears9-1 Teeth that mesh with the sun gear integrally with the sun gear
Car formation department 10 Planetary gear mechanism arm 11 planetary gears 12 Cylindrical part 12-1 Internal gear of cylindrical part 12-2 External gear of cylindrical part 13 idle gear 14 load device

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Claims (3)

(57) [Claims] 1. A housing and a rotatably held with respect to the housing.
A movable member, the housing relative to and a manual operation knob movable in the axial direction, said housing and movable with a predetermined angle of play in the circumferential direction by the movement of該手dynamic operation knob in the axial direction
A manual operation mechanism provided with a turn lock mechanism that fits a fitting portion of a member in a detachable manner. The manual operation mechanism is formed and displayed at a portion facing the manual operation knob on the outside of the bottom surface of the housing in correspondence with the play angle. A manual operation mechanism for an electric drive device, comprising: 2. The manual operation mechanism has a small diameter in the center of the bottom surface .
The hole (2-12) and the fan-shaped fitting recess A (2-
A housing (2) provided with 11) , a driving electric motor (5),
A reduction gear mechanism connected to the drive motor, and a fan-shaped fitting concave portion of the casing (2) which is engaged with the reduction gear mechanism and is rotatably disposed on the inner peripheral surface of the casing and at the bottom center thereof. A (2-
11), a small diameter hole (3-12) and this
And the angle between the ends of the fan-shaped fitting
The fan-shaped fitting recess B (3) smaller than the fitting recess A (2-11)
-11) a movable member (3), and the movable member (3)
Of the fan-shaped fitting recess B (3-11) of the housing (2) and the fan-shaped fitting recess A (2-11) of the housing (2) in the circumferential direction.
A fan-shaped fitting projection (4- ) that can be fitted while leaving a play angle (θ)
11) is provided with a manual operation knob (4) which is integrally formed or integrally held, and the manually operated knob (4) is movable in the axial direction to constitute a releasable rotation lock mechanism. The manual operation mechanism of the electric drive device according to claim 1. 3. A play angle in the circumferential direction of the turn lock mechanism.
(Θ) is formed integrally with or held integrally with the manually operated knob, and is formed on the housing with two axially symmetrical fan-shaped fitting projections whose angles when viewed from their respective ends are 80 ° or less. The electric drive device according to claim 1 or 2, wherein the electric drive device is obtained by fitting with two fan-shaped fitting recesses or holes having an angle of about 90 ° as viewed from the center of the fan . Manual operation mechanism.