JP2022099165A - Operation device - Google Patents

Abstract

To provide a technology that can change the rotational speed of a drive shaft in the same rotational direction relative to the rotational speed of an input rotation.SOLUTION: An operation device 8 for operating the open/close state of a shielding material in the shielding device includes: a drive shaft 850 transmitting a rotational force to a shielding device for opening/closing the shielding material; two drive gears 851, 852 provided to rotate the drive shaft 850 and each of which has a different diameter; a transmission shaft 830 to which a rotational force is input to operate the open/close state of the shielding material; two transmission gears 831, 832 provided for relative rotation with the transmission shaft 830 and meshing with each of the two drive gears 851, 852; and a switching clutch 86 provided for rotation in unison with the transmission shaft 830 and selectively coupled to either one of the two transmission gears 831, 832 for rotation in unison with the transmission shaft 830.SELECTED DRAWING: Figure 3

Description

The present embodiment relates to a blind operating device.

Conventionally, as an operating device for operating the open / closed state of the blind, the rotation of the input shaft in the downward direction of the shielding material, which is rotated forward and reverse based on the operation of the operating means, is driven at a higher speed than the rotation in the upward direction of the shielding material. A solar shading device including a transmission means for transmitting to a shaft is known (see Patent Document 1).

According to this solar shading device, the drive shaft can be rotated at the same speed as the input shaft when the shielding material is pulled up, and the drive shaft is rotated at a rotation speed faster than the rotation speed of the input shaft when the shielding material is lowered. By rotating, when the input shaft is rotated at the same rotation speed, the descending speed of the shielding material can be made faster than the pulling speed of the shielding material.

Japanese Unexamined Patent Publication No. 2006-028871

However, according to the above-mentioned solar shading device, the rotation speed of the drive shaft during the pulling operation and the lowering operation, that is, the forward rotation speed and the reverse rotation in the drive shaft with respect to the rotation of the input shaft having the same rotation speed. Although the directional speeds can be made different from each other, there is a problem that the rotation speeds in the same rotation direction on the drive shaft cannot be changed.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a technique capable of changing the rotation speed of a drive shaft in the same rotation direction with respect to the rotation speed of an input rotation. ..

In order to solve the above-mentioned problems, one aspect of the present invention is an operating device for operating the open / closed state of the shielding material in the shielding device, and transmits a rotational force for opening / closing the shielding material to the shielding device. A drive shaft to rotate, two drive gears having different diameters, and a transmission shaft to which a rotational force for operating the open / closed state of the shielding material is input, and the transmission. Two transmission gears that are rotatably provided relative to the transmission shaft with respect to the shaft and mesh with each of the two drive gears, and two transmission gears that are rotatably provided on the transmission shaft so as to be integrally rotatable with the transmission shaft. A switching clutch that selectively connects any of the above to the transmission shaft so as to rotate integrally with the transmission shaft is provided.

According to the present invention, it is possible to change the rotation speed of the drive shaft in the same rotation direction with respect to the rotation speed of the input rotation.

It is a front view which shows the structure of the blind which concerns on embodiment. It is a perspective view which shows the structure of the operation device and the clutch drive mechanism which concerns on embodiment. It is an exploded perspective view which shows the structure of the operation apparatus which concerns on embodiment. It is a figure which shows the structure of the switching guide groove. It is a front view which shows the operation device in the 1st drive state. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a cross-sectional view taken along the line BB of FIG. FIG. 5 is a sectional view taken along line CC of FIG. It is a schematic diagram which shows the transmission path of the rotational force in the 1st drive state. It is a front view which shows the operation device in the 2nd drive state. FIG. 12 is a sectional view taken along line DD of FIG. FIG. 12 is a cross-sectional view taken along the line EE of FIG. FIG. 12 is a cross-sectional view taken along the line FF of FIG. It is a schematic diagram which shows the transmission path of the rotational force in the 2nd drive state.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the following embodiments, the case where the present invention is applied to a horizontal blind provided with slats as a shielding material will be described as an example. In the following embodiments, the indoor side surface when the blind is provided is referred to as a front surface, the outdoor side surface is referred to as a back surface, the direction consisting of the front surface and the back surface is referred to as a front-rear direction, and the longitudinal direction of the blind is referred to as a left-right direction. I will explain later. Further, in the present specification and the drawings, components having substantially the same function are designated by the same reference numerals, so that duplicate description will be omitted.

(overall structure)
The overall configuration of the blind according to the present embodiment will be described. FIG. 1 is a front view showing the configuration of the blind according to the present embodiment. In FIG. 1, only the head box is shown inside.

As shown in FIG. 1, the blind 1 according to the present embodiment includes a head box 2, an operating device 8, a plurality of slats 4, an elevating cord 5, a ladder cord 6, a bottom rail 7, an elevating shaft 22, and a slat rotating shaft 23. , A drum device 24, and a clutch drive mechanism 25.

The head box 2 is a support member which is formed in a substantially rectangular parallelepiped shape as a whole, has an accommodation space defined inside, and suspends and supports a plurality of slats 4 as a shielding material, and is a window frame via a plurality of brackets 21. Etc. are fixed. In the head box 2, an elevating shaft 22, a slat rotating shaft 23, a drum device 24 having a take-up drum 241 and a rotating drum 242, and a clutch drive mechanism 25 are provided. Further, an operating device 8 is provided at one end of the head box 2.

A plurality of slats 4 are supported between the head box 2 and the bottom rail 7 by a ladder cord 6 hanging from the head box 2 so as to be arranged in a plurality in the vertical direction. One end of the ladder cord 6 is connected to the rotating drum 242 of the drum device 24 and hangs down from the head box 2, and the other end is connected to the bottom rail 7 and arranged in front of and behind the slats 4 so as to sandwich the slats 4. Support the slats 4 individually.

The bottom rail 7 is suspended and supported so as to be located at the lowermost end of the blind 1 by an elevating cord 5 hanging from the head box 2. One end of the elevating cord 5 is connected to the take-up drum 241 of the drum device 24 so that it can be taken up and unwound, and the other end is connected to the bottom rail 7, thereby suspending and supporting the bottom rail 7.

The elevating shaft 22 and the slat rotating shaft 23 are rotatably supported in the head box 2 so that the axial direction thereof faces the longitudinal direction of the head box 2, that is, the left-right direction. The take-up drum 241 in the drum device 24 is rotated by the elevating shaft 22 and raises and lowers the bottom rail 7 to raise and lower the slats 4. Further, the rotating drum 242 in the drum device 24 is rotated by the slats rotating shaft 23, so that the front and rear rudder cords 6 move relative to each other in the vertical direction, and the slats 4 are rotated.

The clutch drive mechanism 25 transmits the rotational force input by the operating device 8 to the elevating shaft 22 and the slat rotating shaft 23. The clutch drive mechanism 25 switches the transmission state so that the input rotational force is transmitted to the elevating shaft 22 after the rotating drum 242 rotated by the slat rotating shaft 23 is rotated within a predetermined angle range.

(Configuration of operating equipment)
The configuration of the operating device according to this embodiment will be described. FIG. 2 is a perspective view showing the configuration of the operating device and the clutch drive mechanism. FIG. 3 is an exploded perspective view showing the configuration of the operating device. FIG. 4 is a diagram showing the configuration of the switching guide groove.

As shown in FIGS. 2 and 3, the operating device 8 includes a pulley 811, an input shaft 820, a first input gear 821, a second input gear 822, a transmission shaft 830, a first transmission gear 831 and a second transmission gear 832. A drive shaft 850, a first drive gear 851, a second drive gear 852, an intermediate gear 853, a switching clutch 86, a switching operation unit 87, and an accommodating member 80 for accommodating these are provided. Further, as will be described later, the operating device 8 is configured to be switchable between the first drive state and the second drive state.

The input shaft 820 is rotatably supported in the accommodating member 80 so that its axial direction faces the left-right direction. The input shaft 820 is provided with a pulley 811 and a first input gear 821 so as to be integrally rotatable. A string-shaped operating member 812 that hangs down from the operating device 8 and can be towed by the operator is wound around the pulley 811 (see FIGS. 1 and 5). The first input gear 821 is formed so as to mesh with the second input gear 822, and when the operating member 812 is towed and the pulley 811 is rotated, the first input gear 821 rotates integrally with the pulley 811.

The transmission shaft 830 is rotatably supported in the accommodating member 80 so that its axial direction faces the left-right direction. The transmission shaft 830 is provided with a second input gear 822 and a switching clutch 86 so as to be integrally rotatable, and a first transmission gear 831 and a second transmission gear 832 are provided so as to be relatively rotatable. The second input gear 822 is formed so as to mesh with the first input gear 821, and the rotational force of the input shaft 820 is transferred to the transmission shaft 830 by rotating the second input gear 822 by the first input gear 821. Be transmitted.

The first transmission gear 831 is provided on the transmission shaft 830 on the outer side in the left-right direction (right side in FIG. 5) with respect to the second transmission gear 832, and the second transmission gear 832 is the first on the transmission shaft 830. It is provided on the inner side in the left-right direction (left side in FIG. 5) with respect to the transmission gear 831. A switching clutch 86 is positioned between the first transmission gear 831 and the second transmission gear 832 in the left-right direction, that is, in the axial direction of the transmission shaft 830. Both the first transmission gear 831 and the second transmission gear 832 are formed as spur gears in the present embodiment, and the first transmission gear 831 is formed to have a diameter larger than that of the second transmission gear 832.

The switching clutch 86 is provided so as to be integrally rotatable with respect to the transmission shaft 830 and movable in the axial direction thereof, and is provided with a pushed portion 860, a first fitting portion 861, a second fitting portion 862, and a compression coil spring. It has 863. The pushed portion 860 is formed as a flange protruding in the radial direction orthogonal to the axial direction of the transmission shaft 830 so as to be pushed by the switching operation portion 87.

The first fitting portion 861 is formed so as to project outward in the left-right direction, that is, toward the first transmission gear 831. Further, the first fitting portion 861 is axially formed in the fitting recess 831R (see FIG. 6) formed corresponding to the first fitting portion 861 at the left-right inward end portion of the first transmission gear 831. It is formed so that it can be fitted and can be locked in the circumferential direction at the time of fitting. According to such a first fitting portion 861, when the switching clutch 86 is fitted to the first transmission gear 831, the switching clutch 86 and the first transmission gear 831 rotate integrally, so that the first transmission gear 831 Will rotate integrally with the transmission shaft 830.

The second fitting portion 862 is formed so as to project inward in the left-right direction, that is, toward the second transmission gear 832. Further, the second fitting portion 862 can be axially fitted into the fitting recess 832R formed corresponding to the second fitting portion 862 at the lateral end portion in the left-right direction of the second transmission gear 832. It is formed so that it can be locked in the circumferential direction at the time of fitting. According to such a second fitting portion 862, when the switching clutch 86 is fitted to the second transmission gear 832, the switching clutch 86 and the second transmission gear 832 rotate integrally, so that the second transmission gear 832 Will rotate integrally with the transmission shaft 830.

The compression coil spring 863 is provided so as to be inserted into the transmission shaft 830 on the lateral side in the left-right direction of the switching clutch 86, that is, at the end of the switching clutch 86 on the side where the first fitting portion 861 is formed. The switching clutch 86 is always urged inward in the left-right direction with respect to the first transmission gear 831.

The drive shaft 850 is rotatably supported in the accommodating member 80 so that its axial direction faces the left-right direction. The drive shaft 850 is provided with a first drive gear 851, a second drive gear 852, and an intermediate gear 853 so as to be integrally rotatable. The first drive gear 851 is provided on the drive shaft 850 in the lateral direction in the left-right direction with respect to the first transmission gear 831 and is formed so as to mesh with the first transmission gear 831. The second drive gear 852 is provided on the drive shaft 850 inward in the left-right direction with respect to the second transmission gear 832 and is formed so as to mesh with the second transmission gear 832.

Both the first drive gear 851 and the second drive gear 852 are formed as spur gears in the present embodiment, and the second drive gear 852 is formed to have a diameter larger than that of the first drive gear 851. As will be described in detail later, in the first drive state, the rotational force of the transmission shaft 830 is transmitted to the drive shaft 850 by rotating the first drive gear 851, and in the second drive state, the first transmission gear 831 rotates the first drive gear 851. The second transmission gear 832 rotates the second drive gear 852, so that the rotational force of the transmission shaft 830 is transmitted to the drive shaft 850.

The intermediate gear 853 is provided on the drive shaft 850 on the inward side in the left-right direction by the second drive gear 852. A clutch drive mechanism 25 is provided on the inner side in the left-right direction of the operating device 8, and the clutch drive mechanism 25 includes a gear that meshes with the intermediate gear 853 (not shown). The clutch drive mechanism 25 rotates the elevating shaft 22 and the slat rotating shaft 23 by the rotational force of the drive shaft 850 transmitted via the intermediate gear 853.

The switching operation unit 87 has two switching guide grooves 871, two inclined portions 872, two steel balls 873, and two compression coil springs 874, and each of these components has one forward and one rearward. It will be distributed one by one. In the following description, it is not distinguished whether each of the components in the switching operation unit 87 is arranged in the front or the rear, and simply, the switching guide groove 871, the inclined portion 872, the steel ball 873, and the compression are not distinguished. It is called a coil spring 874. Further, these components may be provided only on either the front side or the rear side.

As shown in FIG. 4, the switching guide groove 871 is a path for guiding the steel ball 873 formed as an annular groove as a whole by providing the protrusion 871C in the recess, and is the first locking portion L1. , A second locking portion L2, an outward path G, and a return path R. The first locking portion L1 is formed on the lower side of the protrusion 871C and locks the steel ball 873 so as to restrict the upward movement. The second locking portion L2 is formed above the first locking portion L1, specifically, at the upper end of the switching guide groove 871, and locks the steel ball 873 so as to restrict the upward movement. ..

The outward path G is a path of a steel ball 873 arranged on the lateral side in the left-right direction from the return path R, that is, on the side of the first transmission gear 831 and connecting the first locking portion L1 and the second locking portion L2. Further, in the outward path G, the steel ball 873 moves from the first locking portion L1 to the second locking portion L2, and does not move from the second locking portion L2 to the first locking portion L1. The return path R is a path of a steel ball 873 arranged inward in the left-right direction with respect to the outward path G, that is, on the second transmission gear 832 side, and connecting the first locking portion L1 and the second locking portion L2. Further, in the return path R, the steel ball 873 moves from the second locking portion L2 to the first locking portion L1 and does not move from the first locking portion L1 to the second locking portion L2.

The inclined portion 872 can be slidably contacted with the pushed portion 860 of the switching clutch 86 on the lateral side in the left-right direction at the upper end portion of the switching operation portion 87, and is inclined downward toward the outward side in the left-right direction. It is formed. The lower end of the compression coil spring 874 is supported by the switching operation unit 87, and the upper end thereof is supported by the accommodating member 80, so that the switching operation unit 87 is constantly urged downward with respect to the accommodating member 80.

The accommodating member 80 is provided with a support portion 801 and a groove portion 802, respectively, on the front inner wall surface and the rear inner wall surface (see FIG. 2). The two support portions 801 and the two groove portions 802 are both provided on the inner wall surface of the front and rear wall portions of the accommodating member 80, but may be provided only on the inner wall surface of either the front or the back. In the following description, similarly to the components in the switching operation unit 87, it is not distinguished whether the two support portions 801 and the two groove portions 802 are arranged in the front or the rear, and simply the support portions. It is referred to as 801 and groove portion 802.

The groove portion 802 is a groove extending in the left-right direction, and is a path for restricting the steel ball 873 to move relative to the accommodating member 80 only in the left-right direction. According to the switching guide groove 871, the steel ball 873, and the groove portion 802, as will be described later, a cam mechanism capable of alternately shifting to the first and second locked states is configured according to the operation by the operator. In the first locked state, the relative position of the switching operation unit 87 with respect to the accommodating member 80 is located above the second locked state, whereby the operating device 8 is in the first driven state. In the second locked state, the relative position of the switching operation unit 87 with respect to the accommodating member 80 is located below the first locked state, whereby the operating device 8 is in the second driven state.

The support portion 801 is formed so as to project inward in the front-rear direction on the inner wall surface of the accommodating member 80, and supports the upper end of the compression coil spring 874 of the switching operation portion 87. The compression coil spring 874 is provided so as to separate the support portion 801 and the switching operation portion 87, whereby the switching operation portion 87 is constantly urged downward.

The accommodating member 80 accommodates the switching operation unit 87 so that the switching operation unit 87 can be moved in the vertical direction and a lower part of the switching operation unit 87 is exposed from below the accommodating member 80. Further, on the bottom surface of the head box 2, a hole is formed at a position corresponding to the switching operation unit 87, whereby the operator can push the switching operation unit 87 upward from below the head box 2. ..

(1st drive state)
The first drive state of the operating device will be described. FIG. 5 is a front view showing an operating device in the first driven state. 6-8 are a sectional view taken along line AA, a sectional view taken along line BB, and a sectional view taken along line CC of FIG. 5, respectively. FIG. 9 is a schematic view showing a transmission path of the rotational force in the first drive state.

In the operating device 8 (see FIG. 10) in the second drive state, when the operator pushes the switching operation unit 87 upward, the switching guide groove 871 moves upward with respect to the steel ball 873, and the second The steel ball 873 moves from the locking portion L2 to the return path R, and the second locking state is released. After that, when the operator releases the switching operation unit 87, the switching operation unit 87 moves downward due to the urging force of the compression coil spring 874. As a result, the steel ball 873 moves to the first locking portion L1 via the return path R of the switching guide groove 871, and is accommodated by the steel ball 873 located in the first locking portion L1 as shown in FIGS. The switching operation unit 87 is locked to the member 80 in the first locked state.

As shown in FIG. 5-7, in the transition to the first locked state, in the switching clutch 86, the inclined portion 872 of the switching operation portion 87 moved upward slides on the pushed portion 860, whereby the switching clutch 86 slides with the pushed portion 860. It is moved to the outer side in the left-right direction (right side in FIG. 5) against the urging force of the compression coil spring 863, and the first fitting portion 861 is fitted into the fitting recess 831R of the first transmission gear 831. As a result, the operating device 8 is switched to the first drive state in which the switching clutch 86 and the first transmission gear 831 are connected so as to rotate integrally.

By connecting the switching clutch 86 and the first transmission gear 831, as shown in FIG. 9, the rotational force transmitted from the input shaft 820 to the transmission shaft 830 is the rotational force transmitted to the first transmission gear 831 and the first drive gear 851. Is transmitted to the drive shaft 850 via. According to the operating device 8 in the first driving state, the operator operates the open / closed state of the blind 1 with a smaller traction distance in the traction of the operating member 812 as compared with the second driving state. Can be done.

(Second drive state)
The second drive state of the operating device will be described. FIG. 10 is a front view showing an operating device in the second driven state. 11-13 are a sectional view taken along line DD, a sectional view taken along line EE, and a sectional view taken along line FF of FIG. FIG. 14 is a schematic view showing a transmission path of the rotational force in the second drive state.

In the operation device 8 in the first drive state, when the operator pushes the switching operation unit 87 upward, the switching guide groove 871 moves upward with respect to the steel ball 873, and the switching guide groove 871 moves upward from the first locking unit L1. The steel ball 873 moves relatively downward to release the first locked state. After that, when the operator releases the switching operation unit 87, the switching operation unit 87 moves downward due to the urging force of the compression coil spring 874. As a result, the steel ball 873 moves to the second locking portion L2 via the outward path G of the switching guide groove 871, and is accommodated by the steel ball 873 located in the second locking portion L2 as shown in FIGS. The switching operation unit 87 is locked to the member 80 in the second locked state.

As shown in FIG. 10-12, in the transition to the second locked state, the switching clutch 86 is pressed by the inclined portion 872 by moving the switching operation unit 87 downward from the first locked state. It does not abut on the moving portion 860, thereby moving inward in the left-right direction (left side in FIG. 5) by the urging force of the compression coil spring 863, and the second fitting portion 862 fits the second transmission gear 832. Fits into the recess 832R. As a result, the operating device 8 is switched to the second drive state in which the switching clutch 86 and the second transmission gear 832 are connected so as to rotate integrally.

By connecting the switching clutch 86 and the second transmission gear 832, as shown in FIG. 14, the rotational force transmitted from the input shaft 820 to the transmission shaft 830 is the rotational force transmitted to the second transmission gear 832 and the second drive gear 852. Is transmitted to the drive shaft 850 via. According to the operating device 8 in such a second driving state, the operator can operate the open / closed state of the blind 1 with a smaller traction force in the traction of the operating member 812 as compared with the first driving state. can.

As described above, the operating device 8 according to the present embodiment is configured to be switchable between two transmission gears having different gear ratios and a drive gear in the transmission of the rotational force from the transmission shaft 830 to the drive shaft 850. .. Thereby, the rotation speed of the drive shaft 850 with respect to the input shaft 820 can be changed in any of the operation directions of the slats 4, and the operation feeling of the blind 1 can be selected by the operator. ..

In the present embodiment, it has been described that the operating device 8 is applied to the blind 1, which is a horizontal blind in which a plurality of slats 4 are arranged in the vertical direction, but the present invention opens and closes the shielding material by rotating the shaft member. Applicable to all cloaking devices that can manipulate the state. Further, in the present embodiment, the rotational force is input to the transmission shaft 830 via the input shaft 820, but the pulley 811 is provided on the transmission shaft 830 so that the rotational force is directly input to the transmission shaft 830. You can do it.

The present invention can be practiced in various other forms without departing from its gist or main features. Therefore, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. The scope of the present invention is shown by the scope of claims and is not bound by the text of the specification. Moreover, all modifications, various improvements, substitutions and modifications that fall within the equivalent scope of the claims are all within the scope of the present invention.

8 Operating device 830 Transmission shaft 831 1st transmission gear 832 2nd transmission gear 850 Drive shaft 851 1st drive gear 852 2nd drive gear 86 Switching clutch

Claims (6)

An operating device for manipulating the open / closed state of the cloaking device in the cloaking device.
A drive shaft that transmits a rotational force for opening and closing the shielding material to the shielding device,
Two drive gears that are provided to rotate the drive shaft and have different diameters,
A transmission shaft to which a rotational force for operating the open / closed state of the shielding material is input, and
Two transmission gears that are rotatably provided relative to the transmission shaft and mesh with each of the two drive gears.
An operating device provided on the transmission shaft so as to be rotatable integrally with the transmission shaft, and provided with a switching clutch that is selectively connected to either of the two transmission gears so as to be integrally rotated with the transmission shaft. The operating device according to claim 1, wherein the switching clutch is provided on the transmission shaft so as to be movable in the axial direction. The operating device according to claim 2, wherein the switching clutch is formed so as to be fitted and connected to each of the two transmission gears in the axial direction. The operating device according to claim 2 or 3, wherein the switching clutch is urged to one side in the axial direction so as to be connected to one of the two transmission gears. .. The first state in which the switching clutch is moved to the other side in the axial direction against the urging to one side in the axial direction, and the switching clutch is urged to one side in the axial direction to the one side. The operation device according to claim 4, further comprising a switching operation unit for switching to a second state of moving to. The switching operation unit is movably provided in the vertical direction, and is inclined so as to slide the switching clutch and move it to one side in the axial direction when the switching operation unit is moved upward. The operating device according to claim 5, further comprising a unit.

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