JP2922171B2 - Electric shutter opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a carrier such as a fire engine, a rescue work vehicle, a telephone work vehicle, a logistics cargo truck, or a show window, a garage, a building entrance, a window, and other opening and closing parts. The present invention relates to a motor-operated shutter opening / closing device.

[0002]

2. Description of the Related Art An electric shutter opening and closing device of this kind is
As a countermeasure against a failure of an electric circuit in an emergency or the like, various proposals have been made so that the shutter can be opened and closed manually by switching to a manual operation.

The present applicant has also proposed Japanese Utility Model Application Laid-Open No. 3-73395 and Utility Model Registration Publication No. 2514189.

[0004]

The apparatus proposed by the present applicant incorporates an electric motor, a switching mechanism, and the like into a take-up drum of a shutter to achieve compactness. A point was left.

For example, Japanese Unexamined Utility Model Publication No. 3-73395 is simple in structure, but has a structure in which the switching clutch is moved in the axial direction by one release rod. It acts on the switching clutch in a biased manner, which is a factor that hinders the disengagement operability of the clutch. In addition, since the release rod is arranged in the winding drum in parallel with the electric motor, the diameter of the winding drum is large. In other words, there is a problem that the installation space becomes large.

Further, Japanese Utility Model Registration No. 251418
In No. 9, since the switching mechanism is composed of a worm wheel and a worm, the operability at the time of the switching operation is good, but the mechanism becomes complicated and the cost increases, and the motor is opened and closed at the time of manual opening and closing. Since it has to be turned, there is a problem in that an extra force is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric shutter opening / closing apparatus which can easily and easily perform a manual / automatic switching operation and can make the structure of the switching mechanism simple and inexpensive.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a winding device which is rotatably supported at both ends, has one end of a shutter connected to an outer peripheral surface thereof, and is capable of winding and rewinding the shutter. A take-up drum, an electric motor with a speed reducer inserted into the take-up drum from one end thereof, supported in the take-up drum so as not to rotate, and housed movably in the axial direction, and a speed reducer A power transmission member fixed to the take-up drum corresponding to the output shaft of the electric motor and fixed to the output shaft of the electric motor with a speed reducer, and a power transmission member and an electric motor with a speed reducer; Move it from one end of the winding drum in the axial direction,
And manual and automatic switching means for engaging and disengaging the output shaft with the power transmission member.

Since the device of the present invention has the above-described configuration, if the electric circuit of the electric motor with a speed reducer fails, manual
Via an automatic switching operation means, the electric motor with a speed reducer itself is directly moved in the axial direction in the winding drum,
The output shaft of the motor is detached from the power transmission member, the edge of the motor and the winding drum are cut off, and the shutter is manually raised and lowered, so that the manual opening and closing operation can be performed lightly. And to return to the automatic opening and closing state,
The electric motor with a speed reducer itself can be directly moved in the axial direction in the winding drum through the manual / automatic switching operation means, and the output shaft of the motor can be engaged with the power transmission member. The shutter can be automatically opened and closed by an electric motor. Therefore, according to the device of the present invention, the manual / automatic switching operation can be easily and easily performed, and
The structure of the switching mechanism can be made simple and inexpensive.

In the present invention, the manual / automatic switching operation means comprises a lever having a cam surface and a connecting rod, and the speed reducer is connected to the cam surface via the connecting rod by rotating the lever. The attached electric motor can be moved in the axial direction, whereby the manual operation force can be reduced, the manual / automatic switching operation can be simplified easily, and the structure of the switching mechanism can be simplified and inexpensive.

Further, according to the present invention, the manual / automatic switching operation means is constituted by a screw rod and a nut screwed to the screw rod.
One can be rotated by the rotating handle, and the electric motor with reduction gear can be moved in the axial direction through the other, which reduces the manual operation force and makes it easy to switch between manual and automatic. And the structure of the switching mechanism can be made simple and inexpensive.

Further, according to the present invention, the structure of the engagement / disengagement portion between the power transmission member and the output shaft of the electric motor with a speed reducer can be changed by using a square shaft and a square hole, a key and a key groove, or a spline engagement. The structure of the switching mechanism can be made simple and inexpensive.

According to the present invention, the output shaft of the electric motor with a speed reducer is formed with an engagement guide portion for engaging with the power transmission member. The operation of engaging with the power transmission member is facilitated.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1A is a longitudinal sectional side view of a main part of a winding drum showing a first embodiment of the apparatus according to the present invention in an automatic opening / closing state, and FIG. 1B is an electric motor with a reduction gear. FIG. 2A is a perspective view showing one embodiment of an output shaft, and FIG. 2A is a vertical sectional side view of a main part at a right end portion of a winding drum showing a manually opened / closed state of the first embodiment of the apparatus according to the present invention. (B) is a schematic longitudinal side view of the winding drum of the apparatus according to the present invention at the left end, and FIG. 3 (A) is a winding drum showing the automatic opening and closing state of the second embodiment of the apparatus according to the present invention. FIG. 3B is a vertical sectional side view of the same part showing the manually opened / closed state of the same at the right end of FIG.

The apparatus according to the present invention comprises a winding drum 2 rotatably supported at both ends and having an outer peripheral surface connected to one end of a shutter 1 to enable winding and rewinding of the shutter 1; 2 is inserted into the take-up drum 2 from one end thereof and is prevented from rotating,
Moreover, the electric motor 3 with a reduction gear housed movably in the axial direction and the output shaft 3a of the electric motor 3 with the reduction gear are fixed to the take-up drum 2 within the winding drum 2 so as to correspond to the above-mentioned reduction gear. A power transmission member 4 installed and disengaged from an output shaft 3a of the electric motor 3 and an electric motor 3 with a speed reducer are moved axially from one end of the winding drum 2 to power the output shaft 3a. A manual / automatic switching operation means 5 for engaging / disengaging the transmission member 4 is a main component. In the drawing, reference numeral 6 denotes a part of the electric wiring of the motor.

In the shutter 1, a metal split plate called a slat having a width slightly larger than the width of the opening corresponding to the width of the opening at the portion to be attached is slightly longer than the vertical dimension of the opening. One end (upper end) is connected to a take-up drum 2 installed in a storage case (not shown) or the like on the upper inner surface of the opening, and both sides are formed on both sides of the opening. Is slidably inserted into a guide rail (not shown) installed in the apparatus to guide and support it.

The take-up drum 2 is made of a metal cylindrical member slightly longer than the width of the shutter 1, and has a reinforcing sleeve 2a at one end (the right end in the drawing).
And a guide sleeve 2c is inserted into the reinforcing sleeve 2a via a bearing sleeve 2b, and an outer end (right end in the drawing) of the guide sleeve 2c is provided with a storage case (shown in the figure) on the upper inner surface of the opening. The mounting substrate 2d is fixed to the side wall surface (omitted). A sliding sleeve 2e is slidable in the guide sleeve 2c in the axial direction via a key 2f and a key groove 2g, and is inserted and supported so as not to rotate. The sliding sleeve 2e is constantly pressed to the left in the drawing by a spring 2h interposed between them. The rear end of the electric motor with speed reducer 3 is connected to the sliding sleeve 2e.

The electric motor 3 with a speed reducer is constituted by connecting a speed reducer part 3d composed of a multi-stage planetary gear mechanism coaxially in the axial direction to a rotating shaft 3c of an electric motor part 3b. It is housed in the winding drum 2 via the protective case 3e so as to be slidable in the axial direction.
An output shaft 3a is installed at the center of the front end side of the reduction gear unit 3d, and a power transmission member 4 is provided corresponding to the output shaft 3a.
Are fixed in the winding drum 2. The output shaft 3a
Is, as best shown in FIG. 1B, a square shaft portion 3a1.
And an engagement guide portion 3a2, and the engagement guide portion 3a2
It has a round shaft shape slightly smaller in diameter than the square shaft portion 3a1.

The power transmission member 4 is formed at the center thereof with a square hole 4a for engaging with the square shaft portion 3a1 of the output shaft 3a and transmitting the rotational force of the electric motor 3 with a speed reducer to the winding drum 2. The electric motor 3 with a speed reducer is driven by the manual / automatic switching operation means 5 to be described later.
Move to the right in the axial direction in the drawing (operate to open and close manually)
When squeezed, the square shaft portion 3a1 of the output shaft 3a is
a, the edge is cut off so that the torque of the electric motor 3 with the speed reducer is not transmitted to the winding drum 2, so that the winding drum 2 can be freely rotated. During the detachment of the power transmission member 4, the engagement guide portion 3a2 of the output shaft 3a
Is engaged with the square hole 4a, but the engagement guide portion 3a2
Is formed in a round shaft shape slightly smaller in diameter than the square shaft portion 3a1, so that torque is not transmitted and the electric motor 3
Is supported in the winding drum 2,
Further, when returning to the automatic opening / closing state, the square shaft portion 3 of the output shaft 3a is used.
It serves to smoothly guide the a1 into the square hole 4a of the power transmission member 4.

Power transmission member 4 and electric motor 3 with reduction gear
The structure of the engagement / disengagement portion with the output shaft 3a can be a key and a key groove or a spline engagement other than the relationship between the square shaft portion 3a1 and the square hole 4a. May be adopted.

The manual / automatic switching operation means 5 is shown in FIG.
In the first embodiment shown in FIG. 2A and FIG. 2A, a lever lever 5a having a cam surface and a connecting rod 5b are provided, and one end of the connecting rod 5b is connected to the electric motor 3 with a reduction gear.
And the other end of the connecting rod 5b passes through a hole 2d 'formed in the center of the mounting substrate 2d and is taken out of one end of the take-up drum 2. A part of the lever 5a is connected to the portion by a connecting pin 5c.

The lever 5a moves the handle 5a1 by 90 °.
By rotating, one of the two cam surfaces 5a2, 5a3 having different distances from the connecting pin 5c is attached to the mounting board 2.
d, the axial position of the output shaft 3a of the electric motor 3 with the speed reducer with respect to the square hole 4a of the power transmission member 4 is adjusted via the connecting rod 5b to the engagement position (automatic opening / closing state) and the disengagement position (manual (Open / closed state). The two cam surfaces 5a2, 5a3 are connected to a connecting pin 5c.
Is formed on the lever 5a opposite to the handle 5a1. The positional relationship between the two cam surfaces 5a2, 5a3 is formed at a position at an angle of 90 ° around the connecting pin 5c. The two cam surfaces have a small radius when they fall down perpendicularly to the axis of the camshaft, and have a large radius when the lever 5a is raised so as to be parallel to the axis of the winding drum 2. 5a
An arc-shaped portion is formed at the boundary between 2, 5a3.

The manual / automatic switching operation means 5 in the first embodiment has the above-mentioned structure, and is connected to the connecting rod 5b by the cam surfaces 5a2, 5a3 by rotating the lever 5a.
Move the electric motor 3 with the speed reducer in the axial direction through
The manual operation force is reduced, the manual / automatic switching operation is simplified, and the structure of the switching mechanism is simplified.

Next, as shown in FIGS. 3A and 3B, a manual / automatic switching operation means 5 according to a second embodiment of the present invention comprises a screw rod 5d and a nut portion screwed thereto. 5e
The screw rod 5d is supported by penetrating the hole 2d 'in the center of the mounting board 2d, and the rotating handle 5f is fixed to the outer end thereof. The nut 5e is used for the electric motor 3 with a speed reducer. The sliding sleeve 2e connected to the rear end is formed as a screw hole, and a screw rod 5d is screwed into the screw hole, and the screw rod 5d is rotated via the rotating handle 5f, and the reduction gear is rotated via the nut portion 5e. The electric motor 3 is moved in the axial direction to enable a manual / automatic switching operation.

The other end of the winding drum 2 (left side in the drawing)
As shown in FIG. 2B, an end cap 2i is fixed, and the support shaft 2 is inserted through the end cap 2i.
j is mounted via a bearing sleeve 2k, and a bracket 2n for attachment to a side wall surface of a storage case (not shown) installed on an outer inner surface of an opening at a location to be attached with a shutter is provided on an outer end of the support shaft 2j. Is fixed.
A spring seat member 2q is fixed to an inner end of the support shaft 2j via a sleeve 2p, and both ends of a take-up spring 2s are locked between the spring seat member 2q and the end cap 2i. . The take-up spring 2s is set so as to be in proportion to its own weight of the shutter 1 connected to the take-up drum 2, and is configured so that the shutter 1 can be opened and closed lightly.

As described above, the winding drum 2 is rotatably supported at both ends thereof on the side wall surface of the storage case (not shown) installed on the upper inner surface of the opening at the location where the shutter is to be mounted. It is. On the other hand, in the electric motor 3 with a speed reducer accommodated in the winding drum 2, the sliding sleeve 2 e connected to the rear end does not rotate on the guide sleeve 2 c via the key 2 f and the key groove 2 g but in the axial direction. The guide sleeve 2c is slidably inserted and supported, and the guide sleeve 2c is connected to the storage case (not shown) via the mounting board 2d.
By being fixed to the side wall surface, it is held so as not to rotate.

In the first embodiment, when the electric circuit of the electric motor 3 with the speed reducer is not out of order, FIG.
3A in the second embodiment, and the output shaft 3a of the electric motor 3 with the reduction gear is engaged with the power transmission member 4 in any of the embodiments. By operating the shutter open / close switch (not shown) provided in the electric circuit of the electric motor 3 with the speed reducer, the shutter 1 can be automatically opened / closed by the output of the motor. .

In the first embodiment, when the electric circuit of the electric motor 3 with the speed reducer is out of order, the lever 5a is used.
To the state shown in FIG. 2A. In the second embodiment, the rotating handle 5f is rotated to turn the screw rod 5d.
As shown in FIG. 3B through the nut portion 5e, the output shaft 3a of the electric motor 3 with the reduction gear is detached from the power transmission member 4 in any of the embodiments. The edge of the motorized electric motor 3 and the winding drum 2 is cut off, the winding drum 2 can be freely rotated, and the shutter 1 can be manually opened and closed directly by raising and lowering.

In order to repair the electric circuit and return to the automatic opening / closing state, in the first embodiment, the lever 3a is lowered and returned to the state shown in FIG. In the second embodiment, the rotary handle 5f is rotated to return to the state shown in FIG. 3A via the nut 5e with the screw rod 5d.

In practicing the present invention, in addition to the above-described embodiment of the drawings, the present invention can be carried out with appropriate modifications within the scope of the claims. , And other than the first and second embodiments.

[0031]

According to the present invention, by incorporating an electric motor with a speed reducer, a power transmission member, and manual / automatic switching operation means in the winding drum, the entire apparatus can be made compact. In addition, since the manual / automatic switching operation is performed by directly moving the electric motor with a speed reducer itself in the take-up drum, it is necessary to install a release rod on the side of the motor as in the conventional case. There is no winding drum, so the winding drum does not become thick, especially when the electric motor with a reduction gear itself, a relay, a switch, a power supply, a battery, or other electric circuit breaks. The electric motor with a speed reducer is directly moved in the axial direction in the winding drum through the manual / automatic switching operation means, and the output shaft of the motor is moved. It is disengaged from the force transmitting member, cut off an edge of the motor and the winding drum, in which the shutter can be lightly opened and closed manual operations by raising or lowering manually. Then, in order to return to the automatic opening / closing state, the electric motor with the speed reducer itself is directly moved in the axial direction in the winding drum via the manual / automatic switching operation means, and the output shaft of the motor is connected to the power transmission member. The shutter can be automatically opened and closed by the electric motor. Therefore, according to the device of the present invention, the manual / automatic switching operation can be easily and easily performed, and
The structure of the switching mechanism can be made simple and inexpensive.

Further, according to the present invention, the manual / automatic switching operation means comprises a lever having a cam surface and a connecting rod, and the speed reducer is connected to the cam surface via the connecting rod by rotating the lever. The attached electric motor can be moved in the axial direction, whereby the manual / automatic switching operation force can be reduced, the switching operation can be simplified easily, and the structure of the switching mechanism can be simplified and inexpensive.

Further, according to the present invention, the manual / automatic switching operation means is constituted by a screw rod and a nut screwed thereto.
One can be rotated by the rotating handle and the electric motor with reduction gear can be moved in the axial direction through the other, reducing the manual and automatic switching operation force and making switching operation easy and easy. And the structure of the switching mechanism can be made simple and inexpensive.

Further, according to the present invention, the structure of the engagement / disengagement portion between the power transmission member and the output shaft of the electric motor with a reduction gear can be changed by using a square shaft and a square hole, a key and a key groove, or a spline engagement. The structure of the switching mechanism can be made simple and inexpensive.

Further, according to the present invention, the output shaft of the electric motor with the speed reducer is formed with an engagement guide portion for engaging with the power transmission member so that the output shaft of the motor is returned to the automatic opening / closing state after manual operation. The operation of engaging with the power transmission member is facilitated.

[Brief description of the drawings]

FIG. 1A is a vertical sectional side view of a main part of a winding drum in a right end portion of an apparatus according to a first embodiment of the present invention in an automatic opening / closing state, and FIG. 1B is an output shaft of an electric motor with a speed reducer; FIG. 1 is a perspective view showing one embodiment.

FIG. 2 (A) is a longitudinal sectional side view of a main part of a winding drum at a right end portion showing a manually opened / closed state of the first embodiment of the apparatus according to the present invention, and FIG. 2 (B) is winding of the apparatus according to the present invention; FIG. 3 is a schematic vertical sectional side view at the left end of the drum.

FIG. 3A is a longitudinal sectional side view of a main part of a winding drum at a right end showing an automatic opening / closing state of a second embodiment of the apparatus according to the present invention, and FIG. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter 2 Winding drum 3 Electric motor with reduction gear 3a Output shaft 4 Power transmission member 5 Manual / automatic switching operation means 5a Lever lever 5b Connecting rod 5d Screw rod 5e Nut part

Claims (5)

(57) [Claims] 1. A winding drum which is rotatably supported at both ends, has one end connected to an outer peripheral surface thereof, and is capable of winding and rewinding the shutter, and is inserted into the winding drum from one end thereof. And an electric motor with a speed reducer supported inside the take-up drum so as not to rotate and housed movably in the axial direction, and inside the take-up drum corresponding to the output shaft of the electric motor with the speed reducer. A power transmission member fixed to the drum and installed to be capable of engaging and disengaging from an output shaft of the electric motor with a speed reducer; and an electric motor with a speed reducer being axially moved from one end of the take-up drum. An electric shutter opening / closing device, comprising: manual / automatic switching operation means for engaging / disengaging an output shaft with / from a power transmission member. 2. The method according to claim 1, wherein the manual / automatic switching operation means comprises a lever having a cam surface and a connecting rod. The electric shutter opening / closing device according to claim 1, wherein the electric shutter is moved in the direction. 3. A manual / automatic switching operation means is constituted by a screw rod and a nut screwed to the screw rod, one of which is rotated by a rotary handle, and the electric motor with a speed reducer is axially moved via the other. The electric shutter opening / closing device according to claim 1, wherein the opening / closing device is moved. 4. The structure of an engagement / disengagement portion between a power transmission member and an output shaft of an electric motor with a reduction gear is defined by a square shaft and a square hole, or
4. The electric shutter opening / closing device according to claim 1, wherein the key and the key groove or the spline are engaged. 5. The electric shutter opening / closing device according to claim 1, wherein an engagement guide portion for engaging with a power transmission member is formed on an output shaft of the electric motor with a speed reducer.