CN101535590A - Blind, longitudinal blind, and lateral blind - Google Patents

Abstract

A plurality of runners (3) are capable of moving along a hanger rail (1). A first slat (2a) or a second slat (2b) is hung down from and supported by a hanging shaft (6) that is rotatably supported by the runner (3). A gear mechanism (8) transmits rotation of a tilt shaft (4) to each hanging shaft (6) to rotate the slat (2a, 2b). The gear ratio of the gear mechanism (8) corresponding to the first slat (2a) is set to be different from the gear ratio of the gear mechanism (8) corresponding to the second slat (2b). Therefore, in the blind, the angle of the slats (2a, 2b) can be adjusted at different speeds and in conjunction with each other.

Description

Shutters, vertical shutters and horizontal shutters

technical field

The invention relates to a shutter that can adjust the angles of multiple blades at different speeds.

Background technique

The vertical blind has a suspension rail, a plurality of runners movable along the suspension rail, and a plurality of blades each suspended from each runner and supported by each runner. The blades unfold and fold along the suspension rails, and the angle of each blade is adjusted to adjust the amount of light entering the room through the vertical shutters. The material of the blade has light-shielding properties.

The user turns the operating lever (operating mechanism) or pulls the operating cord to adjust the angle of the blades in phase. Thus, depending on the angle of the blades, the interior is fully visible from the exterior. Even if the shading blades hang from and are supported by the suspension rails alternately with translucent blades made of mesh fabric, for example, the blades cannot be adjusted so that only the translucent blades are spread along the suspension rails when viewed from above. Therefore, even if the blades made of different materials hang down from and are supported by the suspension rails, it is difficult to obtain a noticeable effect.

The vertical louver disclosed in Patent Document 1 supports a plurality of opaque louver blades and a plurality of translucent louver blades. Opaque louvers and translucent louvers are alternately arranged one by one. The angle of the opaque louvers and the angle of the translucent louvers can be adjusted independently.

For example, only the angle of the translucent louver can be adjusted so that only the translucent louver extends along the suspension rail as viewed from above. The angle of the translucent louvers can be adjusted to position the translucent louvers obliquely relative to the suspension rail. The angle of the opaque louver can be adjusted to extend perpendicularly to the suspension rail as viewed from above.

However, in the vertical shutters described in the above documents, the angles of the translucent slats and the angles of the opaque slats cannot be adjusted simultaneously by a single operation of the operating mechanism. That is, the above document discloses an embodiment in which only the angle of the opaque louver can be adjusted and another embodiment in which the angle of the opaque louver and the angle of the translucent louver can be adjusted independently.

Patent Document 1: Japanese Patent No. 3281544

Contents of the invention

It is an object of the present invention to provide a shutter which can adjust the angle of a plurality of blades in a linked manner and at different speeds.

According to one aspect of the present invention, there is provided a shutter having a frame and a plurality of blades rotatably supported by the frame. The louver further includes an operating mechanism provided on the frame, and a driving force transmission mechanism that rotates the blades according to the operation of the operating mechanism. The blades include first blades and second blades. The driving force transmission mechanism has a speed change mechanism that rotates the first blade and the second blade at different speeds.

Furthermore, according to another aspect of the present invention, there is provided a vertical shutter having a hanging rail, a plurality of running members supported by the hanging rail. Each of the traveling elements can move along the suspension rail. The vertical shutter has a drooping shaft rotatably supported by each traveling member; a plurality of blades each suspended from and supported by the drooping shaft; and an inclined shaft passing through the traveling members. The vertical shutter further includes an operating mechanism for rotating the inclined shaft; a gear mechanism provided to each of the running members to transmit the rotation of the inclined shaft to each of the drooping shafts and to rotate the blades; and a torque transmission mechanism, which transmits the torque of the gear mechanism to the drooping shaft. The torque value transmitted by the torque transmission mechanism is less than or equal to a predetermined value. The blades include first blades and second blades. Each of the first and second blades has a different material. The gear ratio of the gear mechanism corresponding to the first vane is different from that of the gear mechanism corresponding to the second vane.

Furthermore, according to yet another aspect of the present invention, there is provided a horizontal blind including a frame and a plurality of supporting mechanisms provided on the frame. The horizontal shutter includes a plurality of blades, which are rotatably supported on the frame through each of the support mechanisms; and an operating mechanism, which is provided on the frame to adjust the angle of each blade. The blades include first blades and second blades. The supporting mechanism includes a first supporting mechanism supporting the first blade and a second supporting mechanism supporting the second blade. Each of the first support mechanism and the second support mechanism has a driving force transmission mechanism. The driving force transmission mechanism rotates the first blade and the second blade at different speeds according to the operation of the operating mechanism.

Description of drawings

1 is a front view showing a vertical shutter according to a first embodiment of the present invention;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is an enlarged view near the traveling part shown in Fig. 2;

4 is a plan view showing the operation when the rotational speed of the second blade hanger 14b is twice the rotational speed of the first blade hanger 14a;

FIG. 5 is a plan view showing an operation when the rotation is opposite to that of FIG. 4;

6 is a plan view showing the operation when the rotational speed of the second blade hanger 14b is 1.5 times the rotational speed of the first blade hanger 14a;

7 is a plan view showing the operation when the rotational speed of the second blade hanger 14b is three times the rotational speed of the first blade hanger 14a;

8 is a plan view showing the operation when the rotational speed of the second blade hanger 14b is 4 times the rotational speed of the first blade hanger 14a;

9(a) to 9(e) are plan views showing the rotation operation of the blade hanger according to the second embodiment;

Fig. 10 is a perspective view showing a vertical shutter according to a third embodiment;

11(a) to 11(e) are plan views illustrating the rotating operation of the blade hanger shown in FIG. 10;

Fig. 12 is a front view showing a horizontal blind according to a fourth embodiment;

FIG. 13 is a perspective view showing a drive belt accommodated in the side frame shown in FIG. 12 .

Fig. 14 is an exploded perspective view showing a first supporting mechanism that can rotatably support the upper blade shown in Fig. 11;

Figure 15 is a front view showing the first support mechanism shown in Figure 14;

Fig. 16 is an exploded perspective view showing a second support mechanism that can rotatably support the lower blade shown in Fig. 11;

Fig. 17 is a front view showing the sliding shaft shown in Fig. 16;

Fig. 18 is a front view showing the second driving gear shown in Fig. 16;

Fig. 19 is a side view showing the first supporting mechanism shown in Fig. 14 and the second supporting mechanism shown in Fig. 16;

20(a) to 20(d) are side views showing the operation of the horizontal shutter shown in FIG. 12;

Fig. 21 is a perspective view showing a modified example of the horizontal shutter shown in Fig. 12;

22 is a front view showing a blade angle adjusting mechanism of a horizontal blind according to a fifth embodiment;

Fig. 23 is the right view of Fig. 22;

Fig. 24 is the left side view of Fig. 22;

Figure 25 is an enlarged view showing the blade angle adjustment mechanism shown in Figure 23;

Fig. 26 is an enlarged view showing the blade angle adjustment mechanism shown in Fig. 24;

Figures 27(a) to 27(e) are side views illustrating the operation of the blade angle adjustment mechanism shown in Figures 25 and 26;

Figures 28(a)-28(e) are side views illustrating operation in a direction opposite to that shown in Figure 27;

Fig. 29 is a sectional view showing a modified example of the rotational speed adjusting mechanism;

Fig. 30 is a front view showing a vertical shutter according to a sixth embodiment;

Fig. 31 is a plan view and a front view showing a first fully closed state of the vertical shutter shown in Fig. 30;

Fig. 32 is a plan view and a front view showing a state in which the vertical shutter shown in Fig. 31 is rotated counterclockwise;

Fig. 33 is a plan view and a front view showing a state in which the vertical shutter is further rotated counterclockwise from the state shown in Fig. 32;

Fig. 34 is a plan view and a front view showing a state in which the vertical shutter is further rotated counterclockwise from the state shown in Fig. 33;

Figure 35 is a plan view and a front view showing a second fully closed state;

Fig. 36 is a plan view and a front view showing a state in which the vertical shutter shown in Fig. 35 is rotated clockwise;

Fig. 37 is a plan view and a front view showing a state in which the vertical shutter is further rotated clockwise from the state shown in Fig. 36;

Fig. 38 is a plan view and a front view showing a state in which the vertical shutter is further rotated clockwise from the state shown in Fig. 37;

Fig. 39 is a plan view and a front view showing a state in which the vertical shutter is returned to the first fully closed state.

Detailed ways

1 to 8 show a first embodiment of the present invention.

1 and 2 show a vertical shutter according to a first embodiment. The vertical shutter has a suspension rail 1, a plurality of shading blades 2a and a plurality of translucent blades 2b. The suspension rail 1 extending in the horizontal direction supports a plurality of runners 3 so as to be movable in the horizontal direction. Each of the light-shielding blades 2 a and the translucent blades 2 b hangs down from one of the traveling elements 3 . The shading blades 2a and the translucent blades 2b are alternately arranged one by one. The light-shielding vanes 2a and the translucent vanes 2b extend downward from the suspension rail 1 as a frame.

The material of the light-shielding blade 2a as the first blade has light-shielding property. The material of the translucent blade 2b as the second blade is translucent. The material of the translucent blade 2b is, for example, a mesh fabric material that allows part of the light to pass through.

The left end (first end) of the suspension rail 1 is provided with a left end cover 5a, while the right end (second end) of the suspension rail 1 is provided with a right end cover 5b.

As shown in FIG. 3 , each traveling member 3 supports a pendant shaft 6 so as to be rotatable. Each hanging shaft 6 extends in the vertical direction, and supports one of the light-shielding blade 2a and the translucent blade 2b. The lower end of the hanging shaft 6 has a hook 7 . Each of the first blade hanger 14 a and the second blade hanger 14 b is hung on one of the hooks 7 . As shown in FIG. 1 , the shade blade 2a hangs down from the first blade hanger 14a, and the translucent blade 2b hangs down from the second blade hanger 14b.

As shown in FIG. 1, the operation cord 10 hangs down from the left end cover 5a. The operating rope 10 is arranged to run around it in the suspension rail 1 . Both ends of the operation rope 10 are attached to the guide runner 3a. The guide runner 3a is disposed closest to the left end cover 5a, for example. The runners 3 are connected to each other by spacers 11 . Each spacer 11 determines the maximum separation distance between each pair of traveling elements 3 .

Therefore, when the guide runner 3 a is moved from the right end cover 5 b to the left end cover 5 a by pulling the operation rope 10 , the runners following the guide runner 3 a are sequentially pulled out. When the operation rope 10 is pulled in the opposite direction, the guide traveler 3a moves from the left end cover 5a to the right end cover 5b, so that the guide traveler 3a pushes the following traveler back. Therefore, the light-shielding blade 2a and the translucent blade 2b suspended from the traveling member 3 and supported by the traveling member 3 are pulled out along the suspension rail 1, or folded in the space under the right end cover 5b.

The left end cover 5 a rotatably supports the left end of the tilt shaft 4 , and the right end cover 5 b rotatably supports the right end (second end) of the tilt shaft 4 . The inclined shaft 4 passes through each traveling member 3 to support the traveling member 3 . Three key grooves are formed on the tilting shaft 4 . Each traveler 3 houses a gear mechanism 8 meshing with the tilting shaft 4 . Each gear mechanism 8 has a worm wheel 12 and a worm 13 that mesh with each other. The tilting shaft 4 passes through the inner hole of the annular worm wheel 12 . The key groove of the inclined shaft 4 is engaged with a protrusion formed on the inner peripheral surface of the worm wheel 12 . That is, the worm wheel 12 rotates integrally with the tilt shaft 4 . The worm 13 is formed in a cylindrical shape extending in a vertical direction.

The hanging shaft 6 passes through the inner hole of the worm 13 so as to be rotatable relative to the worm 13 . The upper end of the drooping shaft 6 protrudes upward from the upper end of the worm 13 . A spring receiver 17 is provided at the upper end of the drooping shaft 6 . The spring receiver 17 is formed in a cup shape so as to be opened downward. The spring receiver 17 accommodates the upper end of the coil spring 16 . The drop shaft 6 passes through the coil spring 16 , and the lower end of the coil spring 16 is supported by the upper end of the worm 13 through a washer 18 .

The coil spring 16 pushes the washer 18 against the worm 13 against the spring receiver 17 . Thus, the torque of the worm 13 is transmitted to the drop shaft 6 through the washer 18 , the coil spring 16 and the spring receiver 17 . That is, the coil spring 16 constitutes a torque transmission mechanism. The gear mechanism 8 constitutes a driving force transmission mechanism.

The maximum value (predetermined value) of the torque transmittable by the torque transmission mechanism is determined by the thrust force of the coil spring 16 , the friction coefficient of the coil spring 16 and the washer 18 , and the friction coefficient of the washer 18 and the worm 13 . For example, when the translucent vane 2b contacts the light shielding vane 2a and the translucent vane 2b receives resistance from the light shielding vane 2a, the coil spring 16 corresponding to the translucent vane 2b is allowed to slide relative to the washer 18 . The washer 18 is slidable relative to the worm 13 . That is, when the rotation of the translucent blade 2b is prevented, the worm 13 corresponding to the translucent blade 2b may slide relative to the drooping shaft 6 while transmitting the moment to the drooping shaft 6 . In other words, the worm 13 can idle around the drooping shaft 6 .

As shown in FIG. 1 , the operating rod 9 hangs down from the left end of the suspension rail 1 . The left end cover 5 a accommodates a gear mechanism (not shown) that transmits the rotation of the operating lever 9 to the rotation of the tilt shaft 4 . Thus, when the operating lever 9 is rotated, the tilt shaft 4 is also rotated and each pendant shaft 6 is rotated by each respective gear mechanism 8 . When the respective vertical shafts 6 rotate, the light-shielding blades 2a and the translucent blades 2b rotate simultaneously. That is, the operating lever 9 constitutes an operating mechanism that operates the rotation of the light-shielding blade 2a and the rotation of the translucent blade 2b in conjunction.

The gear ratio of the gear mechanism 8 corresponding to the light-shielding blade 2 a is set to be different from the gear ratio of the gear mechanism 8 corresponding to the translucent blade 2 b. In this embodiment, the gear ratios of the gear mechanism 8 are set to every rotation of the worm wheel 12, and the rotation angle of the translucent blade 2b is twice the rotation angle of the light-shielding blade 2a. That is, the rotational speed of the translucent blade 2b is twice that of the light-shielding blade 2a. The gear ratio of the gear mechanism 8 is set by adjusting the helix angle and lead angle defined by the teeth of the worm wheel 12 and the worm screw 13 . The gear mechanism 8 constitutes a transmission mechanism.

Therefore, when the tilting shaft 4 rotates, the light-shielding blade 2a and the translucent blade 2b rotate simultaneously. The rotational speed of the translucent blade 2b is twice that of the light-shielding blade 2a.

Next, the operation of the vertical shutter will be described.

When the operating cord 10 is operated in a state where the shade blade 2 a and the translucent blade 2 b are folded under the right end cover 5 b , the guide traveling member 3 a is pulled out along the suspension rail 1 . When the operation rope 10 is further pulled, the runners 3 following the guide runner 3 a are sequentially pulled out at a predetermined interval distance. After the guide runner 3a is pulled out to the left end cover 5a, the operation lever 9 is operated to rotate each light-shielding blade 2a and each translucent blade 2b. When the shading blades 2 a and the translucent blades 2 b extend along the suspension rail 1 viewed from above, the vertical shutter is in a fully closed state as shown in FIG. 1 . When viewed from above, the state of each first blade hanger 14a is the same as that of each shade blade 2a, and the state of each second blade hanger 14b is the same as that of each translucent blade 2b.

FIG. 4 shows the conversion of the rotation angles of the first blade hanger 14a and the second blade hanger 14b according to steps S1-S10. Step S1 shows a first fully closed state of the first blade hanger 14a and the second blade hanger 14b. Step S10 shows the second fully closed state of the first blade hanger 14a and the second blade hanger 14b. In this first fully closed state, the second blade hanger 14b is located behind (on the upper side in FIG. 4 ) the first blade hanger 14a on the right side thereof. In the second fully closed state, the second blade hanger 14b is located in front of the first blade hanger 14a on its right (at the lower side in FIG. 4 ). Steps S2-S9 show a state in which the first blade hanger 14a and the second blade hanger 14b rotate about 180 degrees from the first fully closed state to the second fully closed state.

Step S2 shows a state where the first blade hanger 14a is rotated counterclockwise by 40 degrees from the state of step S1. The second blade hanger 14b has rotated about 80 degrees counterclockwise from the state of step S1.

Step S3 shows a state where the first blade hanger 14a is rotated counterclockwise by 5 degrees from the state of step S2. Step S4 shows that the first blade hanger 14a is rotated 5 degrees counterclockwise from the state of step S3, and step S5 shows that the first blade hanger 14a is rotated 5 degrees counterclockwise from the state of step S4 status. In step S5, both ends of the second blade hanger 14b are respectively in contact with the adjacent first blade hanger 14a. In other words, when the first blade hanger 14a rotates 95 degrees counterclockwise from the first fully closed state and the second blade hanger 14b rotates 55 degrees counterclockwise from the first fully closed state, the first blade hanger 14a It is in contact with the second blade hanger 14b. That is, in step S5, both ends of the translucent vane 2b are respectively in contact with a corresponding adjacent light-shielding vane 2a.

In steps S5-S9, the two ends of the second blade hanger 14b respectively continue to be in contact with a corresponding adjacent first blade hanger 14a. That is, in steps S5 to S9, the second blade hanger 14b is restricted by the first blade hanger 14a, and continues to rotate. In other words, the rotational speed of the second blade hanger 14b in steps S5-S9 is lower than the rotational speed of the second blade hanger 14b in steps S1-S4. The first blade hanger 14a in steps S5-S9 receives resistance from the second blade hanger 14b and continues to rotate. Then, as shown in step 10, the first blade hanger 14a and the second blade hanger 14b are in said second fully closed state.

FIG. 5 shows the opposite rotation to that shown in FIG. 4 . That is, FIG. 5 shows that when the first blade hanger 14a and the second blade hanger 14b rotate clockwise according to steps S10-S1 in FIG. 4, the conversion of the first blade hanger 14a and the second blade hanger 14b . The first blade hanger 14a and the second blade hanger 14b in FIG. 5 are operated in the same manner as in FIG. 4 except for the direction of rotation.

Steps S11 to S21 in FIG. 6 show the case where the gear ratio of each gear mechanism 8 is set such that the rotation speed of the second blade hanger 14b is 1.5 times the rotation speed of the first blade hanger 14a. Step S11 shows the first fully closed state, and step S21 shows the second fully closed state.

In the case of FIG. 6 (1.5 times), the difference between the rotation speed of the first blade hanger 14a and the rotation speed of the second blade hanger 14b is smaller than in the case of FIG. 4 (2 times). The second blade hanger 14b does not contact the first blade hanger 14a in steps S11 to S18. The second blade hanger 14b contacts the first blade hanger 14a in steps S19 to S20. That is, in steps S19 to S20, the first blade hanger 14a and the second blade hanger 14b continue to rotate while being restricted by each other.

Steps S31 to S40 in FIG. 7 show the case where the gear ratio of each gear mechanism 8 is set such that the rotation speed of the second blade hanger 14b is three times the rotation speed of the first blade hanger 14a. Step S31 shows the first fully closed state, and step S40 shows the second fully closed state. In step S33, the first blade hanger 14a rotates 30 degrees counterclockwise from the first fully closed state, and contacts the second blade hanger 14b. In steps S33-S39, the first blade hanger 14a and the second blade hanger 14b continue to rotate under mutual restriction.

Steps S41 to S50 in FIG. 8 show the case where the gear ratios of each gear mechanism 8 are set such that the rotational speed of the second blade hanger 14b is four times the rotational speed of the first blade hanger 14a. Step S41 shows the first fully closed state, and step S50 shows the second fully closed state. In step S42, the first blade hanger 14a rotates 20 degrees counterclockwise from the first fully closed state, and contacts the second blade hanger 14b. In steps S42-S49, the first blade hanger 14a and the second blade hanger 14b continue to rotate under mutual restriction.

The first embodiment has the following advantages.

(1) When the shading blade 2a and the translucent blade 2b are rotated about 180 degrees from the first fully closed state to be in the second fully closed state, the shading blade 2a with light-shielding properties and the mesh fabric material are The translucent blades 2b rotate in conjunction with each other in different phases.

(2) By adjusting the gear ratios of the respective gear mechanisms 8, the rotational speeds of the mutually independent translucent vanes 2b are set to be greater than the rotational speeds of the light shielding vanes 2a. After the second blade hanger 14b contacts the first blade hanger 14a, the light-shielding blade 2a and the translucent blade 2b rotate while maintaining the contact state of both. Therefore, by increasing the rotational speed difference, the translucent vane 2b comes into close contact with the light shielding vane 2a at an earlier stage.

(3) While both ends of the translucent blade 2b are in close contact with a corresponding one of the adjacent shade blades 2a, the shade blade 2a and the translucent blade 2b rotate in conjunction with each other. That is, the light shielding blade 2a and the translucent blade 2b rotate while the translucent blade 2b having the mesh fabric material covers the space between the two light shielding blades 2a having light shielding properties. Therefore, it is possible to adjust the lighting amount of soft light passing through the mesh fabric.

(4) When the translucent blade 2b with the mesh fabric material covers the space between the two light-shielding blades 2a, the angle of the light-shielding blade 2a and the angle of the translucent blade 2b are adjusted. Therefore, a vertical shutter with a novel appearance is obtained.

(5) The angle of the light-shielding blade 2 a and the angle of the translucent blade 2 b are simultaneously adjusted only by operating the operation lever 9 . In other words, only by rotating the operating lever 9, the angle of the light-shielding blade 2a and the angle of the translucent blade 2b are adjusted in conjunction with each other.

(6) By adjusting the gear ratio of each gear mechanism 8, the difference between the gear ratio of the gear mechanism 8 corresponding to the light-shielding blade 2a and the gear ratio of the gear mechanism 8 corresponding to the translucent blade 2b is increased. Thus, when both ends of the translucent blade 2b are in close contact with a corresponding one of the adjacent shade blades 2a, the rotation range of the shade blade 2a and the rotation range of the translucent blade 2b are increased.

Next, Figures 9(a) to 9(e) show a second embodiment of the present invention. Figure 9(a) shows the first fully closed state and 9(e) shows the second fully closed state. As shown in Figures 9(b) to 9(d), when the first blade hanger 14a and the second blade hanger 14b rotate, the rotation center (the drooping axis 6) of the first blade hanger 14a and the second blade hanger The distance between the centers of rotation (sagging shafts 6 ) of the frames 14b is set to be greater than half the size of each of the first blade hangers 14a and the second blade hangers 14b as seen from above. Thus, the second blade hanger 14b is able to rotate 180 degrees or more. In other words, in the second embodiment, the size of each of the first blade hanger 14a and the second blade hanger 14b viewed from above is set smaller than that in the first embodiment. The rotational speed of the second blade hanger 14b is set to be twice the rotational speed of the first blade hanger 14a. The dashed-dotted line L shown in FIGS. 9( a ) to 9 ( e ) shows the extending direction of the suspension rail 1 .

When the first blade hanger 14a and the second blade hanger 14b rotate counterclockwise from the first fully closed state shown in FIG. The N-shaped state changes to the V-shaped state shown in FIG. 9( c ), and then changes to the state shown in FIG. 9( d ). In the state shown in FIG. 9( d ), light enters the room through the translucent blade 2 b between the two light-shielding blades 2 a. In the state shown in FIG. 9( b ), the distance between the rotation center of the first blade hanger 14 a and the rotation center of the second blade hanger 14 b is larger than in the state shown in FIG. 9( a ).

When the first blade hanger 14a and the second blade hanger 14b transition from the state shown in Figure 9(b) to the state shown in Figure 9(d), the second blade hanger 14b turns over the dotted line L Does not contact the first blade hanger 14a. Therefore, from the state shown in FIG. 9(a) to the state shown in FIG. 9(d), the rotation of the second blade hanger 14b is not restricted. The first blade hanger 14a shown in Figure 9 (d) is to rotate 90 degrees or more from the state shown in Figure 9 (a), and the second blade hanger 14b is to rotate 180 degrees or more from the state shown in Figure 9 (a). above.

When the first blade hanger 14a and the second blade hanger 14b rotate counterclockwise from the state shown in Figure 9(d), the second blade hanger 14b contacts the first blade hanger 14a, and Continue to rotate under the restriction of hanger 14a. When the first blade hanger 14a rotates to the second fully closed state shown in FIG. 9( e), the second blade hanger 14b is pushed back by the first blade hanger 14a and rotates counterclockwise to Describe the second fully closed state. In other words, the second blade hanger 14b shown in FIG. 9(e) is parallel to the first blade hanger 14a.

Therefore, in the second embodiment, the translucent blade 2b made of mesh fabric material covers the space between two light-shielding blades 2a, and the angle of the light-shielding blade 2a and the angle of the translucent blade 2b can be adjusted respectively . In the second embodiment, even if the translucent vane 2b is rotated beyond its state extending along the suspension rail 1, the translucent vane 2b returns to said second fully closed position. In other words, the angle adjustment is completed in the state that the shading blade 2 a and the translucent blade 2 b are parallel to each other and along the suspension rail 1 .

Next, Figs. 10 and 11 show a third embodiment of the present invention. In the third embodiment, viewed from above, there are two contact pieces 15 protruding from both ends of the second blade hanger 14b. That is, the size of the second blade hanger 14b is extended horizontally from the contact piece 15 . The rotational speed of the second blade hanger 14b is set to twice the rotational speed of the first blade hanger 14a. Both ends of the second blade hanger 14 b are outer ends of the second blade hanger 14 b relative to the drooping shaft 6 .

As shown in FIGS. 11( a ) to 11 ( e ), the first blade hanger 14 a and the second blade hanger 14 b rotate counterclockwise. When the first blade hanger 14a and the second blade hanger 14b are in a V-shape as shown in FIG. 11( c ), the contact member 15 is in contact with the first blade hanger 14a. Thereafter, the second blade hanger 14b rotates under the restriction of the first blade hanger 14a.

Therefore, the second blade hanger 14b is reliably in contact with the first blade hanger 14a via the contact. Therefore, the second blade hanger 14b rotates together with the first blade hanger 14a.

Next, Figs. 12 to 21 show a fourth embodiment of the present invention. Fig. 12 shows a horizontal shutter according to a fourth embodiment. This horizontal blind has a right side frame 21a, a left side frame 21b, a plurality of upper blades 22a, and a plurality of lower blades 22b. The right side frame 21a and the left side frame 21b extend in the vertical direction, and the upper blade 22a and the lower blade 22b each extend in the horizontal direction. The right frame 21 a has a plurality of first support mechanisms 27 and a plurality of second support mechanisms 40 .

As shown in FIG. 12, the right side frame 21a and the left side frame 21b according to the fourth embodiment constitute a part of a quadrangular frame supporting both ends of the upper blade 22a and the lower blade 22b at rotational speed.

An upper blade 22a as a first blade is provided on the upper half (upper part) of the frame, and a lower blade 22b as a second blade is provided on the lower half (lower part) of the frame.

The upper blade 22a and the lower blade 22b are formed of thin aluminum plates. A plurality of small holes are formed on the upper blade 22a. That is, part of the light is transmitted through the upper blade 22a.

14 and 15 show one of the first supporting mechanisms 27 provided on the right side frame 21a. Each first support mechanism 27 rotatably supports the upper blade 22a with respect to the right side frame 21a. The left side frame 21b is provided with a plurality of first supporting mechanisms 27 . The first supporting mechanism 27 on the left frame 21b is the same as the first supporting mechanism 27 on the right frame 21a. Therefore, the first support mechanism 27 located on the right side frame 21a will now be described.

The right side frame 21a has a right facing piece 21c, and a right outward facing piece 21d extending vertically outward from the right facing piece 21c. The right facing piece 21c and the right outward facing piece 21d are formed in an L shape. Similarly, the left side frame 21b is formed in an L-shape having a left-facing piece and a left-outward piece. The right-facing sheet 21c is opposed to the left-facing sheet. Each right-facing piece 21c has a plurality of support holes 28 . Slide shafts 29 are inserted into the respective support holes 28 . The peripheral surface of the right-facing piece 21 c rotatably supports the slide shaft 29 and allows axial movement of the slide shaft 29 .

Each slide shaft 29 has a blade receiving portion 30, a flange 33, and an insertion portion 29a. The flange 33 is located between the blade accommodating portion 30 and the insertion portion 29a. The insertion portion 29 a is inserted into the support hole 28 . The insertion portion 29a has an engaging groove 29b extending axially. The blade accommodating portion 30 is formed in a flat plate shape, and an engaging convex portion 31 is formed at the center of the blade accommodating portion 30 . The right end of the upper blade 22a is formed with an engagement hole 32 . The engagement protrusion 31 is fitted into the engagement hole 32 so that the slide shaft 29 supports the right end of the upper blade 22a.

As shown in FIG. 14 , the insertion portion 29 a is inserted into the washer 34 , the first sprocket 35 , the friction washer 36 , the coil spring 37 and the rotation limiter 38 , and a collet 39 is fitted to the tip of the insertion portion 29 a. The collet 39 prevents the rotation limiter 38 from falling off the slide shaft 29 . That is, the right-facing piece 21c, the washer 34, the first sprocket 35, the friction washer 36, the coil spring 37, and the rotation limiter 38 are provided between the flange 33 and the chuck 39 in this order.

The friction washer 36 and the rotation limiter 38 have engagement pieces that engage with the engagement groove 29 b, and rotate integrally with the slide shaft 29 . The coil spring 37 pushes the friction washer 36 towards the first sprocket 35 . Therefore, the rotation of the first sprocket 35 is transmitted to the friction washer 36 by the frictional force caused between the surface of the first sprocket 35 and the surface of the friction washer 36 . That is, the rotation of the first sprocket 35 rotates the slide shaft 29 . The first sprocket 35 forms a part of the driving force transmission mechanism. The first sprocket 35 idles relative to the friction washer 36 when the rotation restricting member 38 is engaged with the right outward piece 21 d to restrict the rotation of the slide shaft 29 .

The rotation limiter 38 is formed like a home plate (pentagon), and determines a rotation range of about 180 degrees of the slide shaft 29 . Either side edge of the rotation restricting member 38 contacts the right outward piece 21d to restrict the rotation of the slide shaft 29 . Accordingly, the rotation range of the upper blade 22a is also about 180 degrees. That is, the upper blade 22 can rotate from the first fully closed state to the second fully closed state, and the upper blade 22a in the first fully closed state extends in the up and down direction as shown in FIG. 20( a ), The upper blade 22a in the second fully closed state is reversed from the first fully closed state as shown in FIG. 20( d ).

The lower end of the right frame 21 a rotatably supports the first driving gear 24 shown in FIG. 13 , and the upper end of the right frame 21 a rotatably supports the driven gear 25 . An endless driving belt 23 is arranged on the first driving gear 24 and the driven gear 25 . The drive belt 23 is accommodated in the right side frame 21a. The driving belt 23 has a plurality of engaging holes 26 equally spaced to mesh with the first driving gear 24 and the driven gear 25 .

The horizontal blind has an operating lever 9 shown in FIG. 1 or an operating mechanism such as an operating cord 10 (not shown in FIG. 12 ). The user operates the operating mechanism to rotate the first drive gear 24 . Similarly, the left side frame 21 b houses the first drive gear 24 , the driven gear 25 and the drive belt 23 . For example, the operating lever 9 rotates the first drive gear 24 in the right frame 21a and the first drive gear 24 in the left frame 21b synchronously at the same speed. Accordingly, the drive belts 23 on the left and right sides are synchronously driven. The drive belt 23 is disposed around the first sprocket 35 . When the drive belt 23 is driven, the first sprocket 35 is rotated. This causes the upper blade 22a to rotate.

16-18 show the second support mechanism 40 . The second support mechanism 40 rotatably supports the lower blade 22b with respect to the right side frame 21a.

As shown in FIG. 16 , the second support mechanism 40 has a slide shaft 29 , a friction washer 36 , a coil spring 37 , a rotation limiter 38 and a collet 39 similar to the first support mechanism 27 . The second support mechanism 40 has a support cylinder 41 and a transmission gear 42 instead of the washer 34 and the first sprocket 35 . In addition, the second support mechanism 40 has a gear shaft 43 , a second sprocket 44 and a second driving gear 45 . The gear shaft 43 is integrally formed with the second sprocket 44 and the second drive gear 45 .

As shown in FIG. 16 , the right facing piece 21c has a second support hole 47 adjacent to each support hole 28 . The peripheral surface of the right-facing piece 21 c rotatably supports the gear shaft 43 inserted into the second support hole 47 . As shown in FIG. 18 , the drive belt 43 is engaged with the second sprocket 44 .

The blade accommodating portion 30 of the slide shaft 29 supports the end of the lower blade 22b. The right facing piece 21c, the support cylinder 41, the transmission gear 42, the friction washer 36, the coil spring 37 and the rotation limiting member 38 are sequentially arranged between the flange 33 and the chuck 39 of the second support mechanism 40. The support cylinder 41 has a cylinder part 41a and a flange 41b formed at the end of the cylinder part 41a. The flange 41b contacts the right facing piece 21c. The transmission gear 42 is provided between the cylindrical portion 41 a and the friction washer 36 . The second driving gear 45 meshes with the transmission gear 42 .

The transmission gear 42 is rotatable relative to the slide shaft 29 . The coil spring 37 pushes the friction washer 36 against the transmission gear 42 . The surface of the transfer gear 42 is in frictional engagement with the surface of the friction washer 36 .

When the drive belt 23 rotates, the gear shaft 43 is also rotated. The rotation of the gear shaft 43 is transmitted from the second drive gear 45 to the transfer gear 42 . The rotation of the transfer gear 42 is transmitted to the friction washer 36 through this frictional engagement. The friction washer 36 rotates integrally with the slide shaft 29 . This causes the lower blade 22b to rotate. The second sprocket 44 and the second driving gear 45 constitute a driving force transmission mechanism.

The ratio of the number of teeth of the second sprocket 44 to the number of teeth of the first sprocket 35 is set to 1:2.5. The ratio of the number of teeth of the transmission gear 42 to the number of teeth of the second driving gear 45 is set to 1:0.6. Therefore, the rotational speed of the sliding shaft 29 of the second supporting mechanism 40 is 1.5 times the rotational speed of the sliding shaft 27 of the first supporting mechanism 27 . That is, the first sprocket 35, the second sprocket 44, and the second drive gear 45 constitute a part of the transmission mechanism. The drive belt 23 rotating in the right frame 21a causes the upper blade 22a and the lower blade 22b to rotate at different rotational speeds.

The operation of the horizontal shutter will now be described with reference to FIGS. 20(a) to 20(d).

Fig. 20(a) shows the first fully closed state, and Fig. 20(d) shows the second fully closed state. As shown in FIG. 20( a ), the upper blade 22a and the lower blade 22b in the first fully closed state extend in the vertical direction when viewed from the side. Each of the upper blades 22a in the first fully closed state is located behind each of the lower blades 22b (on the right side in FIG. 20( a )). When the user operates the operating lever 9, the drive belt 23 is rotated, and this causes the upper blade 22a and the lower blade 22b to rotate.

According to the setting of the gear ratio (gear ratio) of the first supporting mechanism 27 and the second supporting mechanism 40, the rotation speed of the lower blade 22b is 1.5 times of that of the upper blade 22a. Therefore, as shown in FIG. 20(c), the lower blade 22b enters the second fully closed state earlier. That is, the lower half of the horizontal louver shown in FIG. 20( c ) prevents external light from entering the room and shades the room, while the upper half of the horizontal louver adjusts the amount of daylighting.

When the lower blade 22b is in the second fully closed state, the rotation limiting member 38 of the second supporting mechanism restricts the rotation of the lower blade 22b. Accordingly, the transfer gear 42 is idling relative to the friction washer 36 .

Thus, in the case of FIG. 20( c ), only the upper blade 22 a continues to rotate by the drive belt 23 . Then, as shown in FIG. 20(d), the upper blade 22a enters the second fully closed state. When the operating lever 9 is reversely rotated, the upper blade 22a and the lower blade 22b in the second fully closed state rotate from the state shown in FIG. 20( d ) to the state shown in FIG. 20( a ). First, the lower blade 22b becomes in the first fully closed state, and then the lower blade enters the first fully closed state.

The fourth embodiment has the following advantages.

(4-1) The upper blade 22a located in the upper half of the louver and the lower blade 22b located in the lower half of the louver rotate at different speeds.

(4-2) The rotation speed of the lower blade 22b is higher than that of the upper blade 22a. Therefore, only by operating the operating lever 9, external light enters from the upper half of the blind, while external light is prevented from entering the room from the lower half of the blind.

(4-3) A plurality of small holes are formed in the upper blade 22a. Therefore, even if the upper half of the louver is in a fully closed state, part of the external light enters through the upper half of the louver.

22 to 28 show a fifth embodiment of the present invention. The horizontal blind according to the fifth embodiment has a top box 51, a plurality of upper blades 53a, and a plurality of lower blades 53b. The top box 51, the upper blade 53a, and the lower blade 53b are all elongated shapes extending in the left-right direction. The top box 51 forms a frame that rotatably supports the upper blade 53a and the lower blade 53b.

22 to 24 show the end of the top box 51 . At least two ends of the top box 51 are respectively accommodated with a rope mechanism 56 . This horizontal blind has a drive shaft 58 passing through the small drum 57a, the large drum 57b and the winding drum 62 so that they cannot rotate relative to each other. That is, the small drum 57a, the large drum 57b, and the winding drum 62 and the drive shaft 58 rotate integrally. The small drum 57 a , the large drum 57 b , the small drum 57 a and the bobbin 62 are aligned along the drive shaft 58 . The diameter of the large drum 57b is larger than that of the small drum 57a. The large drum 57b and the small drum 57a constitute a rotational speed adjusting mechanism.

The small hanging ring 59a is engaged with the outer peripheral surface of the small drum 57a as the first drum. The large eye 59b is engaged with the large drum 57b as the second drum. The small eye 59a and the large eye 59b are each formed of a torsion coil spring.

The upper end of the first ladder rope 52a is attached to a small eye 59a. The upper end of the second ladder rope 52b is attached to a large lifting eye 59b. A first ladder cord 52 a and a second ladder cord 52 b extend downward from the hanging cord mechanism 56 .

As shown in FIGS. 23 and 24 , the first ladder rope 52a has a plurality of horizontal lines respectively supporting one of the upper blades 53a, which are a plurality of first blades. The middle lower rung 54 depends from and is supported by the lower end of the first ladder rope 52a. The second ladder rope 52b has a plurality of horizontal wires respectively supporting one of the lower blades 53b, and the lower blades 53b are a plurality of second blades. The lower rung 55 hangs down from the lower end of the second ladder rope 52b and is supported thereby.

The frictional engagement of the small eye 59a and the small drum 57a allows the small eye 59a and the small drum 57a to rotate integrally. Similarly, the frictional engagement of the large drum 57b and large eye 59b allows the large drum 57b and large eye 59b to rotate integrally. Rotation of the small ring 59a changes the inclination of the transverse line of the first ladder rope 52a. This causes the upper blade 53a to rotate. Similarly, rotation of the large eye 59b changes the inclination of the transverse line of the second ladder rope 52b. This causes the lower blade 53b to rotate.

As shown in FIG. 22 , the upper end of the lifting cord 64 is wound on the winding drum 62 , and the winding drum 62 winds up the lifting cord 64 . The lower rail 55 depends from the lower end of the lift cord 64 and is supported thereby.

When a user operates an operating mechanism such as an operating lever or an operating cord 10 as shown in FIG. 1 , the drive shaft 58 is rotated. Therefore, when the winding drum 62 is rotated in the winding direction, the lifting cord 64 is wound up by the winding drum 62 and the lower rail 55 is also lifted. Thus, the upper blade 53a and the lower blade 53b are sequentially stacked upward. When the winding drum 62 is rotated in an unwinding direction opposite to said winding direction, the lift cord 64 is unwound and the lower rail 55 is lowered. Thereby, the upper blade 53a and the lower blade 53b return to the unfolded state shown in FIGS. 23 and 24 . The horizontal line of the second ladder rope 52b is only arranged on the lower half of the second ladder rope 52b so that it does not interfere with the upper blade 53a when the lifting rope 64 is fully unwound from the winding drum 62 (unfolded state).

As shown in FIG. 25, two small contact portions 60a are formed by folding both ends of the small lifting ring 59a. Similarly, as shown in FIG. 26, two large contact portions 60b are formed by folding both ends of the large suspension ring 59b.

As shown in FIGS. 25 and 26, stoppers 61 are provided below the small drum 57a and the large drum 57b. The stopper 61 is a rotation limiting mechanism, which is used to limit the rotation of the small suspension ring 59a and the large suspension ring 59b beyond a predetermined angle. The stopper 61 is arranged on the rotation track of the small suspension ring 59a and the rotation track of the large suspension ring 59b. When the small contact portion 60a contacts the stopper 61, the rotation of the small suspension ring 59a is restricted. Thus, the small drum 57a idles relative to the small lifting ring 59a. Similarly, when the large contact portion 60b contacts the stopper 61, the rotation of the large eye 59b is restricted and the large drum 57b idles relative to the large contact portion 60b.

As shown in Figure 25, when the small drum 57a rotates counterclockwise and the small contact portion 60a on the left side of the small suspension ring 59a contacts the stopper 61, the upper blade 53a is in the first fully closed state as shown in Figure 27(a) . When the small drum 57a rotates clockwise and the small contact portion 60a on the right side of the small suspension ring 59a touches the block 61, the upper blade 53a is in the second fully closed state as shown in FIG. 27(e).

Similarly, as shown in Figure 26, when the large drum 57b rotates counterclockwise and the large contact portion 60b on the left side of the large suspension ring 59b touches the stopper 61, the lower blade 53b is in the first position as shown in Figure 27(a). fully closed. When the large drum 57b rotates clockwise and the large contact portion 60b on the right side of the large suspension ring 59b touches the block 61, the lower blade 53b is in the second fully closed state as shown in FIG. 27(e).

As shown in FIG. 25 , the rotation angle of the small drum 57a from the state where the left small contact portion 60a contacts the block 61 to the state where the right small contact portion 60a contacts the block 61 is the first angle range α. Similarly, as shown in FIG. 26 , the rotation angle of the large drum 57b from the state where the left large contact portion 60b contacts the block 61 to the state where the right large contact portion 60b contacts the block 61 is the second angle range β. The first angular range α is set larger than the second angular range β.

After the small contact portion 60a contacts the stop 61 and the small drum 57a is further rotated, the frictional engagement of the small eye 59a and the small drum 57a is reduced. Thus, the small drum 57a idles relative to the small lifting ring 59a. Similarly, after the large contact portion 60b contacts the stop 61 and the large drum 57b is further rotated, the frictional engagement between the large eye 59b and the large drum 57b is reduced. Thereby, the large drum 57b idles relative to the large lifting ring 59b.

Therefore, the drive shaft 58, the small drum 57a, the large drum 57b, the small ring 59a, and the large ring 59b constitute a driving force transmission mechanism and a speed change mechanism. The small drum 57a, the large drum 57b, the small suspension ring 59a and the large suspension ring 59b form a blade angle adjustment mechanism. When the common drive shaft 58 is rotated by manual operation, the blade angle adjustment mechanism adjusts the angle of the upper blade 53a and the angle of the lower blade 53b to different angles in conjunction.

Next, the operation of the lateral shutter is described.

As shown in FIG. 27( a ), the operating cord 10 is operated to rotate the drive lever 58 clockwise from the first fully closed state of the upper blade 53 a and the lower blade 53 b. Therefore, as shown in FIG. 27(b), the lower blade 53b is adjusted to extend horizontally as viewed from the side. The drive lever 58 is further rotated clockwise, as shown in FIG. 27(c), to adjust the upper blade 53a to extend horizontally as viewed from the side. In the first fully closed state shown in FIG. 27(a), the upper blade 53a and the lower blade 53b are in a state protruding to the outside (left side). This reliably prevents light from above such as daytime sunlight from entering the room. In the second fully closed state shown in FIG. 27(e), the upper blade 53a and the lower blade 53b are in a state protruding toward the chamber (right side). This reliably prevents indoor light from leaking to the outside at night.

During the states shown in Figs. 27(a) to 27(c), the rotation angle of the small drum 57a is equal to the rotation angle of the large drum 57b. However, since the diameter of the large drum 57b is larger than that of the small drum 57a, as shown in FIGS. 27(b) and 27(c), the lower blade 57b rotates clockwise prior to the upper blade 53a.

As shown in FIG. 27( c ), when the drive shaft 58 further rotates clockwise from the state where the lower blade 53b is fully closed, the stopper 61 restricts the rotation of the large suspension ring 59b. Therefore, the large drum 57b is idling relative to the large suspension ring 59b, and the lower vane 53b is in the second fully closed state, as shown in FIG. 27(d). Only the upper blade 53a continues to rotate clockwise.

After the state shown in FIG. 27(d), as shown in FIG. 27(e), the upper blade 53a enters a second fully closed state. Thus, the stopper 61 limits the rotation of the small ring 59a. This restricts the upper blade 53a from being further rotated.

As shown in Figures 28(a) to 28(c), when the upper blade 53a and the lower blade 53b in the second fully closed state rotate counterclockwise, the lower blade 53b rotates counterclockwise prior to the upper blade 53a.

When the drive shaft 58 is further rotated counterclockwise from the state in which the lower blade 53b is in the first fully closed state shown in FIG. 28(c), only the upper blade 53a rotates as shown in FIG. 28(d). Then, the upper blade 53a enters the first fully closed state, as shown in Fig. 28(e).

The upper blade 53a and the lower blade 53b in the state shown in FIG. 27(d) rotate counterclockwise, so that the upper blade 53a and the lower blade 53b are adjusted to extend horizontally. For example, if the diameter of the big drum 57b is set as twice the diameter of the small drum 57a, the second ladder rope 52b will be raised and lowered at twice the speed of the first ladder rope 52a every time the drive shaft 58 rotates. Therefore, the rotational speed of the lower blade 53b is twice that of the upper blade 53a. Thus, when the upper blade 53a shown in FIG. 27(d) rotates 45 degrees counterclockwise, the lower blade 53b rotates 90 degrees counterclockwise.

Similarly, when the drive shaft 58 is rotated clockwise from the state shown in FIG. 28(d), the upper blade 53a and the lower blade 53b are adjusted to extend horizontally. In the first to fourth embodiments, all the blades can be adjusted to extend vertically relative to the frame.

The horizontal blind according to the fifth embodiment has the following advantages.

(5-1) The drive shaft 58 rotates integrally with the small drum 57a and the large drum 57b. The small eye 59a is frictionally engaged with the small drum 57a, and the large eye 59b is frictionally engaged with the large drum 57b. The first ladder rope 52a is attached to the small eye 59a, and the second ladder rope 52b is attached to the large eye 59b. Therefore, by rotating the common drive shaft 58, the rotation speed of the upper blade 53a can be set differently from the rotation speed of the lower blade 53b.

The rotation speed of the lower blade 53b is set to be faster than the rotation speed of the upper blade 53a. Therefore, in the state where the upper blade 53a extends horizontally, the lower blade 53b is in a fully closed state. Therefore, the lower blades 53b prevent light from entering the room from the outside, while an appropriate amount of light enters the room from the space between the upper blades 53a.

(5-2) Both the upper blade 53a and the lower blade 53b are adjusted to be in the first fully closed state and the second fully closed state. Therefore, the first fully closed state that prevents light from entering the room is selected during the day, and the second fully closed state that prevents light from leaking from the room is selected at night.

(5-3) Both the upper blade 53a and the lower blade 53b can extend horizontally.

(5-4) The common drive shaft 58 rotates the small drum 57a and the large drum 57b. The small suspension ring 59a, the large suspension ring 59b and the stopper 61 adjust the angle of the upper blade 53a and the lower blade 53b. Therefore, the blade angle adjustment mechanism can be constituted by a simple structure without increasing the size of the top box 51 .

The above-described embodiments may be modified as follows.

In the first to third embodiments, the rotation speed of the first blade hanger 14a corresponding to the light-shielding blade 2a can be set to be higher than the rotation speed of the second blade hanger 14b corresponding to the translucent blade 2b.

In the fourth embodiment, the upper blade 22a may omit the small hole. That is, the upper blade 22a may be a normal blade without any holes.

As shown in FIG. 21, in the fourth embodiment, the side frame 46 of the horizontal louver can be bent in the middle to form an L-shape. The upper part of the horizontal louver covers the skylight. The rotational speed of the lower blade 22b may be set to be greater than the rotational speed of the upper blade 22a. In this way, the lower vane 22b prevents light from entering the room from the outside through the window extending up and down.

In the fourth embodiment, the upper blades 22a and the lower blades 22b may be arranged alternately one by one. The upper blade 22a has small holes, while the lower blade 22b is a normal blade without any holes. In this way, even if the lower blades 22b are fully closed, light can selectively enter the room from the outside through the upper blades 22a respectively arranged between the two lower blades 22b. Even if the upper blade 22a is in a fully closed state, part of the light is allowed to enter the room from the outside through the small hole.

In the fifth embodiment, instead of the small drum-shaped member 57a and the large drum-shaped member 57b having different diameters, the first drum-shaped member and the second drum-shaped member having the same diameter may be used, and only the first drum-shaped member and the second drum-shaped member may be used. A reduction mechanism is provided between the drive shafts 58 . The reduction mechanism reduces the rotation speed of the drive shaft 58 and transmits the rotation to the first drum to set the rotation speed of the lower blade 53b faster than that of the upper blade 53a. For example, as shown in FIG. 29 , the reduction mechanism includes a plurality of planetary gears 63 provided between the small drum 57 a and the drive shaft 58 .

Next, FIGS. 30 to 39 show a sixth embodiment of the present invention. Fig. 30 shows a vertical shutter according to a sixth embodiment. This vertical blind has a left blade 2c and a right blade 2d. The left blade 2c is a plurality of first blades occupying the left half of FIG. 30 , and the right blade 2d is a plurality of second blades occupying the right half of FIG. 30 . The left blade 2c constitutes the left blade group G1 as the first blade group. The right blade 2d constitutes the right blade group G2 as the second blade group. Pull out the left blade group G1 along the suspension rail 1 before the right blade group G2. The material of the left blade 2c and the material of the right blade 2d have light-shielding properties.

The vertical blind has a traveler 3 and a gear mechanism 8 similar to FIGS. 2 and 3 corresponding to each left blade 2c and each right blade 2d. The gear ratio of the gear mechanism 8 corresponding to each left blade 2c is different from the gear ratio of the gear mechanism 8 corresponding to each right blade 2d. For example, the rotation speed of each right blade 2d is set to twice the rotation speed of each left blade 2c. The gear ratio of the gear mechanism 8 is set by adjusting the helix angle and the lead angle formed by the teeth of the worm wheel 12 and the worm screw 13 of the gear mechanism 8 .

When the tilt shaft 4 rotates, the left blade 2c and the right blade 2d rotate simultaneously (cooperate with each other).

Next, the operation of the vertical shutter will be described.

When the guide runner 3a is pulled out along the suspension rail 1 by operating the operating rope 10, the subsequent runners 3 are sequentially pulled out at predetermined mutual intervals. When the guide runner 3 a is pulled out to one end of the suspension rail 1 , the operating lever 9 is operated to adjust the left blade 2 c and the right blade 2 d along the suspension rail 1 . Therefore, the left blade 2c and the right blade 2d are in a fully closed state as shown in FIG. 31 .

31 to 35 show the transition of the rotation angles of the left blade 2c and the right blade 2d from the first fully closed state to the second completely closed state, in which the left blade 2c and the right blade 2d change from The first fully closed state is rotated about 180 degrees.

In the first fully closed state shown in FIG. 31, the operating lever 9 is operated to rotate the left blade 2c and the right blade 2d counterclockwise as viewed from above. The rotation angle of the right blade 2d is twice the rotation angle of the left blade 2c. Therefore, as shown in FIG. 32, when the right blade 2d rotates 90 degrees, the left blade 2c rotates 45 degrees.

As shown in FIG. 33, when the right blade group G2 rotates about 180 degrees and is in the second fully closed state, the left blade 2c rotates about 90 degrees. This prevents further rotation of the right blade 2d, and the worm 13 corresponding to the right blade 2d idles with respect to the drooping shaft 6. When the operation lever 9 is further operated, all the left blades 2c and the right blades 2d are in the second fully closed state shown in FIG. 35 after the state shown in FIG. 34 .

When the blade 2 is rotated clockwise from the second fully closed state shown in FIG. 35, the right blade 2d and the left blade 2c rotate in the following manner. As shown in FIG. 36, when the right blade 2d rotates 90 degrees, the left blade 2c rotates 45 degrees. As shown in FIG. 37, when the right blade group G2 rotates about 180 degrees and is in the first fully closed state, the left blade 2c rotates about 90 degrees. When the operating lever 9 is further rotated, the left blade 2c and the right blade 2d are in the first fully closed state shown in FIG. 39 after the state shown in FIG. 38 .

The vertical shutter according to the sixth embodiment has the following advantages.

(6-1) The left blade group G1 and the right blade group G2 are simultaneously rotated by the rotation operation of the operating lever 9 . Furthermore, the left blade 2c and the right blade 2d rotate at different angles.

(6-2) The rotation speed of the right blade 2d is twice the rotation speed of the left blade 2c. Therefore, as shown in FIGS. 33 and 37, in the fully closed state of the right blade 2d, the left blade 2c is adjusted to extend vertically with respect to the suspension rail 1 as viewed from above. Therefore, light enters the interior from the outside. As shown in FIGS. 32 , 34 , 36 and 38 , when the right blade 2 d is adjusted to extend vertically relative to the suspension rail 1 , the left blade 2 c is adjusted to extend obliquely relative to the suspension rail 1 . As a result, part of the light is prevented from entering the room from the outside. Accordingly, each of the left blade group G1 and the right blade group G2 selectively allows light to enter the room from the outside.

The sixth embodiment can be modified as follows.

The ratio of the rotation angle (rotational speed) of the left blade group G1 to the right blade group G2 does not have to be 1:2.

The first to third blade groups can be provided. In other words, a left vane set, a middle vane set, and a right vane set may be provided. The rotational speed of the middle blade set may be different from the rotational speed of the left blade set or the right blade set.

Claims (16)

1, a kind of shutter comprises:

Framework (1,21a, 21b, 51);

The multi-disc blade (2a, 2b, 22a, 22b, 53a, 53b, 2c, 2d) that rotatably supports by described framework;

Be arranged at the operating mechanism (9) of described framework; And

Driving force transmission mechanism (8,35,42,44,45,57a, 57b, 58,59a, 59b, 61), described driving force transmission mechanism makes each described blade rotation according to the operation of described operating mechanism,

Described shutter is characterised in that, described blade comprises first blade (2a, 22a, 53a, 2c) and second blade (2b, 22b, 53b, 2d), wherein said driving force transmission mechanism has gear (8,35,43,44,45,57a, 57b, 59a, 59b), and described gear makes described first blade and described second blade with different speed rotations.

2, a kind of perpendicular type shutter comprises:

Hanger rail (1);

By a plurality of parts of advancing (3) that described hanger rail (1) supports, each described part of advancing can move along described hanger rail (1);

The drop axle (6) that rotatably supports by each described part of advancing (3);

Multi-disc blade (2a, 2b), each described blade is supported by described drop axle (6), and sagging from described drop axle (6);

Pass the sloping shaft (4) of the described part of advancing (3);

Make the operating mechanism (9) of described sloping shaft (4) rotation;

Gear mechanism (8), it is located at each described part of advancing (3) and is passed to each described drop axle (6) with the rotation with described sloping shaft (4), rotates described blade (2a, 2b) by this; And

Torque transmission mechanism (16), its moment with described gear mechanism (8) is passed to described drop axle (6), and wherein, the transferable moment values of described torque transmission mechanism is smaller or equal to predetermined value,

Described perpendicular type shutter is characterised in that, described blade comprises first blade (2a) and second blade (2b), and described first blade (2a) has different material mutually with second blade (2b), wherein, the gear ratio of the described gear mechanism (8) corresponding with described first blade (2a) is made as the gear ratio that is different from the corresponding described gear mechanism (8) of described second blade (2b).

3, perpendicular type shutter as claimed in claim 2 is characterized in that, the material of described first blade (2a) has light-proofness, and the material of described second blade (2b) is translucent with the transfer part beam split.

4, as claim 2 or 3 described perpendicular type shutters, it is characterized in that, the gear ratio of the described gear mechanism (8) corresponding with described second blade (2b) be made as greater than with the gear ratio of the corresponding described gear mechanism (8) of described first blade (2a).

As each described perpendicular type shutter in the claim 2～4, it is characterized in that 5, described first blade (2a) and described second blade (2b) are gone up alternately at described hanger rail (1) and be provided with.

6, as claim 4 or 5 described perpendicular type shutters, it is characterized in that, comprising:

The first blade suspension bracket (14a), it is located at described drop axle (6) to support described first blade (2a); And

The second blade suspension bracket (14b), it is located at described drop axle (6) supporting described second blade (2b),

Wherein, when the described first blade suspension bracket (14a) of the described second blade suspension bracket (14b) contact, the described first blade suspension bracket (14a) and the second blade suspension bracket (14b) are rotatable.

7, perpendicular type shutter as claimed in claim 6, it is characterized in that, comprise contact (15), each described contact (15) is located in the two ends of the described second blade suspension bracket (14b) one, the described two ends of the described second blade suspension bracket (14b) are the outer end for described drop axle (6)

Wherein, described contact (15) extends along the described second blade suspension bracket (14b), to contact the described first blade suspension bracket (14a).

8, a kind of horizontal type shutter comprises:

Framework (21a, 21b);

Be located at a plurality of supporting mechanisms (27,40) of described framework;

Multi-disc blade (22a, 22b), it rotatably is supported in described framework by each described supporting mechanism; And

Operating mechanism (9), it is located at described framework regulating the angle of each described blade,

Described horizontal type shutter is characterised in that described blade comprises first blade (22a) and second blade (22b),

Wherein, described supporting mechanism comprises first supporting mechanism (27) that supports described first blade (22a) and second supporting mechanism (40) that supports described second blade (22b), and

Wherein, each described first supporting mechanism (27) and described second supporting mechanism (40) have driving force transmission mechanism (35,42,44,45), and described driving force transmission mechanism makes described first blade (22a) rotate with different speed with second blade (22b) according to the operation of described operating mechanism (9).

9, a kind of horizontal type shutter comprises:

Top box (51);

Ladder rope (52a, 52b), it extends from described top box;

Multi-disc blade (53a, 53b), it hangs down from described ladder rope (52a, 52b), and is supported by described ladder rope (52a, 52b);

Driving shaft (58);

Be located at the blade angle governor motion (57a, 57b, 59a, 59b) in the described top box (51), wherein, described blade angle governor motion makes described blade rotation according to the rotation of described driving shaft (58) by described ladder rope (52a, 52b); And

Rotation limiting mechanism (61), its restriction is in the rotation of the described blade (53a, 53b) of complete closure state,

Described horizontal type shutter is characterised in that, described blade (53a, 53b) comprises first blade (53a) and be located at second blade (53b) of described first blade (53a) below,

Wherein, described ladder rope comprises the first ladder rope (52a) and the second ladder rope (52b), and wherein, the described first ladder rope supports described first blade (53a) with respect to described top box (51), and the described second ladder rope supports described second blade (53b) with respect to described top box (51), and

Wherein, described blade angle governor motion has rotating speed adjusting mechanism, and described rotating speed adjusting mechanism makes described first blade (53a) rotate with different rotating speeds with the described second ladder rope (52b) according to the rotation of described driving shaft (58).

10, horizontal type shutter as claimed in claim 9 is characterized in that described rotating speed adjusting mechanism comprises:

Side drum shape spare (57a), it supports the described first ladder rope (52a) with respect to described driving shaft (58); And

Big drum type spare (57b), it supports the described second ladder rope (52b) with respect to described driving shaft (58),

Wherein, the diameter of described big drum type spare (57b) is greater than the diameter of side drum shape spare (57a), and described side drum shape spare (57a) and described big drum type spare (57b) are rotated by described driving shaft (58).

11, horizontal type shutter as claimed in claim 9 is characterized in that described rotating speed adjusting mechanism comprises:

Drum type spare (57a), it supports the described first ladder rope (52a) with respect to described driving shaft (58); And

Reducing gear (63), it is located between described drum type spare (57a) and the described driving shaft (58),

Wherein said reducing gear (63) reduces the rotating speed of described driving shaft (58), and described rotation is passed to described drum type spare (57a).

12, a kind of perpendicular type shutter comprises:

Hanger rail (1);

By a plurality of parts of advancing (3) that described hanger rail (1) supports, each described part of advancing can move along described hanger rail (1);

The drop axle (6) that rotatably supports by each described part of advancing (3);

Multi-disc blade (2a, 2b), each described blade is supported by described drop axle (6), and sagging from described drop axle (6);

Pass the sloping shaft (4) of the described part of advancing (3);

Make the operating mechanism (9) of described sloping shaft (4) rotation; And

Gear mechanism (8), it is located at each described part of advancing (3) and is passed to each described drop axle (6) with the rotation with described sloping shaft (4), comes to rotate simultaneously described blade (2c, 2d) by this,

Described perpendicular type shutter is characterised in that described blade constitutes a plurality of vane group (G1, G2),

Wherein, in each described gear mechanism and the described vane group (G1, G2) is corresponding, and the gear ratio of each described gear mechanism is different with the gear ratio of adjacent pairing another gear mechanism in the described vane group (G1, G2).

13, perpendicular type shutter as claimed in claim 12, it is characterized in that, described vane group (G1, G2) comprises first vane group (G1) and second vane group (G2), wherein, from described first vane group (G1) and the folding state of described second vane group (G2), in described second vane group (G2) before, pull out described first vane group (G1) along described hanger rail (1), and

Wherein, the gear ratio of the described gear mechanism (8) corresponding with described first vane group (G1) is made as the gear ratio that is different from the corresponding described gear mechanism (8) of described second vane group (G2).

14, as claim 12 or 13 described perpendicular type shutters, it is characterized in that the ratio of the rotating speed of the rotating speed of described first vane group (G1) and described second vane group (G2) was made as 1: 2.

15, perpendicular type shutter as claimed in claim 12 is characterized in that described vane group also comprises the 3rd vane group,

Wherein, the gear ratio of the described gear mechanism (8) corresponding with described second vane group (G2) is different from the gear ratio with the corresponding described gear mechanism (8) of described first vane group (G1), and is different from the gear ratio of the described gear mechanism (8) corresponding with described the 3rd vane group.

16, as each described perpendicular type shutter in the claim 12～15, it is characterized in that, be provided with torque transmission mechanism (16) between each described gear mechanism (8) and each the described drop axle (6), and the transferable moment values of described torque transmission mechanism (16) is smaller or equal to predetermined value.

Images