JP3122704B2 - Roll screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen.

[0002]

2. Description of the Related Art In a roll screen which raises and lowers a screen by continuously pulling an operation cord wound around a pulley, when the screen becomes large, the operation load by manual operation becomes large. For this reason, some large-size roll screens have a built-in coil spring to reduce the load. The coil spring has one end fixed to a pipe holder that rotates integrally with the winding pipe, and the other end fixed to a spring holder that rotates relative to the winding pipe and rotates integrally with the first winding stopper. The initial winding stopper is configured to be engaged with or released from the pipe receiver by moving it in the axial direction. After the coil spring is mounted on the take-up pipe, the coil spring is given a predetermined initial winding according to the size of the screen as follows. First, the first winding stopper is moved in the axial direction to release the engagement with the pipe receiver. Next, the take-up pipe is pressed by hand so as not to rotate, and the initial winding stopper and the spring receiver integrated therewith are rotated relative to the pipe receiver by a predetermined amount. As a result, the coil spring is twisted and rotated at the other end while one end thereof is restrained, so that a predetermined initial winding is given to the coil spring. Next, the initial winding stopper is moved in the axial direction to engage with the pipe receiver so that the initial winding does not return. Next, the winding pipe is supported by the bracket, and the engagement between the first winding stopper and the pipe receiver is released.

[0003]

However, the above-mentioned conventional roll screen incorporating a coil spring has the following problems. In other words, due to the vibration of the take-up pipe during the screen lifting operation or the impact of the weight bar colliding with the take-up pipe when the screen is completely wound, the force in the pipe receiving direction is applied to the first-wind stopper, The winding stopper may engage with the pipe receiver, so that the screen cannot be moved up and down. For this reason, in order to resume the lifting operation of the screen, it is necessary to perform an operation of moving the initial winding stopper in the axial direction to release the engagement with the pipe receiver, which is troublesome. In addition, there is a problem that the appearance is not good because the bracket is exposed on the side of the roll screen where the first winding stopper is disposed. The present invention has been made to solve the above problems.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by restraining the axial movement of the initial winding stopper by a decorative cover fitted to a bracket. That is, the roll screen of the present invention is connected to a winding pipe (16) whose both ends are rotatably supported by the bracket (12), and one end side of the winding screen (16) is wound and unwound. Screen (18)
And an operation unit (24) configured to be capable of transmitting rotation to the winding pipe (16) but not transmitting rotation from the winding pipe (16), and a load applied to the operation unit (24). And a coil spring device for reducing the rotation of the coil spring device. The coil spring device rotates integrally with the main shafts (28, 32) supported by the bracket (12) so as not to rotate and the winding pipe (16). The pipe supports (36, 38) rotatably fitted to the main shafts (28, 32) and rotatably fitted to the main shafts (28, 32), and the main shafts (28, 32) not supported by the bracket (12). A rotatable spring receiver (42) and a coil spring (4) having one end fixed to the pipe receiver (38) and the other end fixed to the spring receiver (42).
4) and the main shaft (28) are restricted in relative rotation, but are allowed to move in the axial direction.
8) A first winding stopper (22) that can be switched between a state integrally connected to the pipe receiver (36) and a state where the connection is released by the axial movement of (8), A decorative cover which is fitted to the bracket (12) so as to restrain the initial winding stopper (22) in a state where the connection with the pipe receiver (36) is released so as not to be movable in the axial direction. (13) is characterized in that it is provided detachably. Further, the roll screen of the present invention, a winding pipe both ends of which are rotatably supported by a bracket, a screen having one end connected to the winding pipe so that the winding and unwinding,
A coil spring comprising: an operation unit configured to transmit rotation to the winding pipe but not to transmit rotation from the winding pipe; and a coil spring device configured to reduce a load applied to the operation unit. The apparatus includes a main shaft rotatably supported by the bracket, a pipe receiver rotatably connected to the winding pipe and rotatably fitted to the main shaft, and a rotatable integrally with the main shaft. The relative rotation between the spring support and the coil spring, one end of which is fixed to the pipe support and the other end of which is fixed to the spring support, is restricted, but movement in the axial direction is allowed. The first winding switch, which can switch between a state integrally connected to the pipe receiver and a state where the connection is released by moving the main shaft in the axial direction. And the bracket is fitted to the bracket so that the first winding stopper in a state where the connection with the pipe receiver is released is restrained from rotating and cannot be moved in the axial direction. , A cosmetic cover that is constrained is provided detachably. In addition, the code | symbol in a parenthesis shows the corresponding member of the Example mentioned later.

[0005]

The first winding is applied to the coil spring as follows. First, before attaching the roll screen to the bracket, the first winding stopper is moved in the predetermined direction of the main shaft to release the connection between the first winding stopper and the pipe receiver, and the first winding stopper and the main shaft can be rotated integrally. To Next, the first winding stopper is rotated in a predetermined direction (a direction in which the force of the coil spring increases) while holding the winding pipe by hand so as not to rotate. As a result, the main shaft and the spring receiver rotate together with the first winding stopper, so that the other end of the coil spring connected to the spring receiver twists and rotates integrally with the spring receiver.
On the other hand, one end of the coil spring fixed to the pipe receiver does not rotate because it holds down the winding pipe so as not to rotate. Thereby, a predetermined initial winding is given to the coil spring. After the initial winding is applied to the coil spring, the initial winding stopper is moved in a direction opposite to the predetermined direction of the main shaft, and is connected to the pipe receiver. In this state,
Attach the spindle to the bracket non-rotatably. Thereby, the roll screen is attached to the bracket. Next, the first winding stopper is moved in the predetermined direction of the main shaft to release the connection with the pipe receiver. Next, the decorative cover is fitted to the bracket. Thereby, the axial movement of the first winding stopper is restricted by the decorative cover. Therefore, due to the vibration of the winding pipe at the time of raising and lowering the screen, the impact of the weight bar colliding with the winding pipe when the screen is completely wound, etc.
The first winding stopper is prevented from moving in the axial direction of the main shaft and being connected to the pipe receiver. Further, the bracket on the first winding stopper side of the roll screen is covered with the decorative cover, so that the appearance is improved. In the case where the main shaft is rotatably supported by the bracket, the coil spring can be initially wound after the roll screen is attached to the bracket.
That is, first, the main shaft is rotatably supported by the support member in a state where the first winding stopper and the pipe receiver are engaged.
Thereby, the roll screen is attached to the bracket. Next, the first winding stopper is moved in the axial direction of the main shaft to release the engagement between the first winding stopper and the pipe receiver. Next, the first winding stopper is rotated in the predetermined direction while holding the winding pipe by hand so as not to rotate. As a result, the main shaft and the spring receiver rotate together with the first winding stopper, so that the other end of the coil spring is twisted and rotated integrally with the spring receiver,
Since one end of this is restricted from rotating together with the pipe receiver, a predetermined initial winding is given to this. Then, the decorative cover is fitted to the bracket while holding the first winding stopper by hand so as not to rotate. As a result, the first winding stopper is restrained from moving in the axial direction by the decorative cover, and its rotation is restrained. For this reason, since the rotation of the main shaft, whose relative rotation with the first winding stopper is also restricted, is restricted, the main shaft rotates via the spring receiver due to the elastic force of the coil spring, and the initial winding of the coil spring returns. Is prevented.
Also, in this case, similarly to the case in which the coil spring is first wound and then the roll screen is attached to the bracket, the decorative cover is fitted to the bracket so that the first winding stopper and the pipe catcher can be used during use. Can be prevented from being connected, and the appearance of the bracket on the first winding stopper side of the roll screen can be improved.

[0006]

FIG. 1 shows a first embodiment. Reverse "L" for attaching roll screen 10 to window frame 11 (see FIG. 6)
The two brackets 12 in the shape of a letter,
The winding pipe 16 (not shown in FIG. 1) is rotatably supported by 2a. A decorative cover 13 is detachably attached to the vertical piece 12a of the left bracket 12 in FIG. The cushioning members 14 are attached to the horizontal pieces 12 b of both brackets 12 on the side facing the winding pipe 16. Winding pipe 16
Is connected to one end of the screen 18 so as to be wound and unwound. The winding pipe 16 is provided with an initial winding stopper 22, which will be described later, at the left end in FIG. 1, and penetrates the vertical piece 12a of the bracket 12 at the right end in FIG. An operation unit 24 is provided to protrude in the middle right direction. The operation unit 24 is provided with a pulley (not shown) configured to transmit rotation to the winding pipe 16 but not to transmit rotation from the winding pipe 16. An operation cord 26 that can rotate the pulley is wound around the outer periphery of the pulley. Screen 1
The other end of 8 is connected to a weight bar 20.

FIG. 2 is a sectional view showing the vicinity of the left end of FIG. The first main shaft 28 constituting one end of the main shaft has a rectangular cross section. A support member is fixed to the vertical piece 12 a of the bracket 12. The first main shaft 28 is connected to the support member 3.
It is supported non-rotatably at 0. Also, the first spindle 28
2, two first engaging grooves 28c and two second engaging grooves 28d are formed at predetermined intervals in the axial direction. The first winding stopper 22 is formed on the inner surface of the cylindrical portion 22a having a rectangular cross section that is movably fitted in the first main shaft 28 in the axial direction, and is formed on the inner surface of the cylindrical portion 22a. An engaging projection 22b engageable with the mating groove 28d, a disk-shaped side wall 22c protruding orthogonally from the outer surface of the cylindrical portion 22a, and a leftward projection in FIG. 2 from the outer diameter of the side wall 22c. A substantially “U” -shaped cross-section connecting portion 22d to be formed
A flange portion 22e (see FIG. 3) formed at the left end of the outer diameter portion of the connecting portion 22d; and a rib portion formed on the outer peripheral surface of the connecting portion 22d at every 90 degrees in the circumferential direction in the axial direction. 22
f (see FIG. 3), and a spline shaft-shaped engaging portion 22g formed on the inner diameter portion on the side wall 22c side of the connecting portion 22d. The second spindle 32, which constitutes the other end of the spindle,
A distal end portion 32a formed at the left end portion in FIG. 2, a shoulder portion formed from the distal end portion 32a, a large diameter portion 32b having a diameter larger than the distal end portion 32a, and a large diameter portion The shoulder portion is formed from the large diameter portion 32b, the middle diameter portion 32c is smaller in diameter than the large diameter portion 32b, and the shoulder portion is formed from the middle diameter portion 32c, and the diameter is smaller than the middle diameter portion 32c. Small diameter part 32 of
d. The second main shaft 32 is formed with a space portion 32e having a rectangular cross section from the distal end portion 32a to an intermediate position in the axial direction of the large diameter portion 32b. Also, the second spindle 32
A space portion 32f having a circular cross section in the axial direction is formed from the small-diameter portion 32d side end to the space portion 32e. The second main shaft 32 has a space 32 e formed by the first main shaft 2.
8 from the right end in FIG.
It is connected so as to rotate integrally with a screw 34 inserted into the space 32f from the 2d side end. The first pipe receiver 36 forming one end of the pipe receiver has a large diameter portion 3 having a diameter larger than that of the winding pipe 16 formed at the left end in FIG.
6a and a small diameter portion 36c formed by forming a shoulder portion 36b from the large diameter portion 36a. Large diameter part 36a
Has a space formed therein, and a spline groove-shaped engaging portion 36d that can be engaged with the engaging portion 22g of the first winding stopper 22 is formed on the inner peripheral surface of the space. Large diameter part 36a
Can be inserted into the connecting portion 22d of the first winding stopper 22. The first pipe receiver 36 is fitted so that the outer diameter part of the small diameter part 36 c rotates integrally with the winding pipe 16, and the inner diameter part of the small diameter part 36 c is the outer diameter of the tip diameter part 32 a of the second main shaft 32. It is rotatably supported by the part. Second pipe receiver 38 constituting the other end of the pipe receiver
Has a cylindrical shape with a flange, and has a cylindrical portion 38.
A projection 38c that protrudes in the outer diameter direction is formed at a position spaced apart from the brim portion 38a of b in the axial direction by a predetermined distance.
The second pipe receiver 38 has its inner diameter part rotatably fitted to the outer diameter part of the middle diameter part 32c of the second main shaft 32, and its collar part 38a comes into contact with the end of the large diameter part 32b. The movement to the left in FIG. 2 is restricted. The second pipe receiver 38 has a flange 38a
Are connected so as to rotate integrally with the winding pipe 16. The cylindrical pipe 40 has a cylindrical shape, and an inner diameter portion of the left end portion in FIG. 2 is fitted to an outer diameter portion of the small diameter portion 32d of the second main shaft 32 so that the cylindrical pipe 40 rotates integrally. Are linked. The left end of the cylindrical pipe 40 in FIG. 2 is in contact with the right end of the middle diameter portion 32c in FIG. 2, and the movement of the cylindrical pipe 40 to the left in FIG. 2 is restricted. The spring receiver 42 has a cylindrical shape with a bottom. The spring receiver 42 is connected so that the inner diameter portion of the cylindrical portion 42a is fitted to the outer diameter portion of the cylindrical pipe 40 and rotates together. A projecting portion 42d that protrudes in the outer diameter direction is formed over the entire circumference in the outer diameter portion of the cylindrical portion 42a of the spring receiver 42 near the bottom portion 42b. Also, the spring receiver 4
2 are projections 4 projecting radially outward from the projecting portion 42d of the cylindrical portion 42a at a predetermined axial distance.
2c is formed. The spring receiver 42 has a support member 46 fitted to the outer diameter of the cylindrical portion 42a.
And is rotatably supported by the inner diameter of the winding pipe 16. The spring receiver 42 has a protrusion 42d in contact with the left end in FIG. 2 on the inner diameter side of the support member 46, and is restricted from moving rightward in FIG. The coil spring 44 is connected to the second pipe receiver 3.
8, the cylindrical pipe 40 and the spring receiver 42 are provided on the outer peripheral surface side thereof.
Are integrally connected between the flange 38a and the projection 38c of the second pipe receiver 38, and the other end 44b is integrally connected between the projection 42c and the projection 42d of the spring receiver 42. . As shown in FIG. 5, the decorative cover 13 includes a “U” -shaped plate portion 13 a and a “U” -shaped frame portion 13.
b, "U" -shaped plate portion 13a and "U" -shaped frame portion 13b
13c (see FIG. 2) for connecting at predetermined intervals
And are integrally formed. An engagement groove 13d into which the three rib portions 22f of the initial winding stopper 22 can be simultaneously fitted is formed on an inner peripheral side end of the "U" -shaped frame portion 13b.
Are formed. The decorative cover 13 has a “U” -shaped plate portion 13 a formed by a vertical piece 12 a of the bracket 12.
2 is located adjacent to the left side in FIG. 2, and the "U" -shaped frame portion 13b is located adjacent to the flange portion 22e of the first winding stopper 22 on the right side in FIG. So that the lower end of the vertical piece 12a of the bracket 12 contacts
Attached to the bracket 12. The first winding stopper 2
2, first spindle 28, second spindle 32, first pipe receiver 3
6, the second pipe receiver 38, the cylindrical pipe 40, the spring receiver 42 and the coil spring 44 constitute a coil spring device.

Next, the operation of the first embodiment will be described. Before attaching the roll screen 10 to the bracket 12, a predetermined initial winding is applied to the coil spring 44 as follows. That is, first, the first winding stopper 22 is
Move to the middle left direction. Thereby, the first winding stopper 22
The engaging projection 22b moves from the second engaging groove 28d of the first main shaft 28 over the upper surface of the first main shaft 28 in FIG. 4, and is engaged with the first engaging groove 28c. Connecting part 2
4 is a vertical piece 12a of the bracket 12 shown in FIG.
And moved to the position shown by the two-dot chain line in FIG. For this reason, the engagement between the first winding stopper 22 and the first pipe receiver 36 is released, and the engagement protrusion 22 b of the first winding stopper 22 is moved to the first engagement groove 2 of the first main shaft 28.
8c, the first winding stopper 22 and the first spindle 2
8 can be rotated integrally. Next, the first winding stopper 22 is rotated by a predetermined amount in a predetermined direction while holding the winding pipe 16 by hand so as not to rotate. Accordingly, the first main shaft 28, the second main shaft 32, the cylindrical pipe 40, and the spring receiver 42 rotate together with the first winding stopper 22, so that the other end 44b of the coil spring 44 connected to the spring receiver 42 is The torsional rotation is performed integrally with the rotation of the reference numeral 42. On the other hand, one end 44a of the coil spring 44 is connected to the winding pipe 16 and the second pipe receiver 38.
And the rotation is restricted. Therefore, the other end 44b of the coil spring 44 is torsionally rotated while the one end 44a is restrained. Thereby, the coil spring 44 is given an initial winding. Next, as shown in FIG. 4, the large diameter portion 36a of the first pipe receiver 36 is inserted into the connecting portion 22d of the first winding stopper 22, and the first winding stopper 22 and the first pipe receiver 36 rotate integrally. Engage state. Next, in this state, the first main shaft 28 is non-rotatably attached to the vertical piece 12a of the bracket 12 by the support member 30. Thereby, the roll screen 10 is attached to the bracket 12. Next, the first winding stopper 22 is moved to a position indicated by a two-dot chain line in FIG. Next, as shown in FIG. 6, the vertical piece 12 a of the bracket 12 and the flange portion 22 e of the first winding stopper 22 are connected to the “U” -shaped plate portion 13 a and the “U” -shaped frame portion 13 b of the decorative cover 13. The decorative cover 13 is attached to the vertical piece 1 of the bracket 12 so as to be inserted therebetween.
2a is fitted to the vertical piece 12a of the bracket 12 by pulling it upward from below. At this time,
As shown in FIG. 3, the rib portions 22 f of the first winding stopper 22 are fitted into the engagement grooves 13 d of the decorative cover 13, respectively, so that the decorative cover 13 is prevented from falling off the bracket 12. Further, since the "U" -shaped frame portion 13b of the decorative cover 13 contacts the flange portion 22e of the first winding stopper 22, the movement of the first winding stopper 22 to the right in FIG. Thereby, the screen 18
When the winding pipe 16 vibrates during lifting and lowering, or when the screen 18 is completely wound, the weight bar 20
When the first winding stopper 22 is moved in FIG.
It can be prevented from moving in the middle right direction and engaging with the first pipe receiver 36. Further, the bracket 12 on the first winding stopper 22 side of the roll screen 10 can be covered with the decorative cover 13, so that the appearance is improved.

In the first embodiment, the coil spring 44 is firstly wound before the roll screen 10 is mounted on the bracket 12, and thereafter the roll screen 10 is mounted on the bracket 12. However, the present invention is not limited to this. Instead, the roll screen may be attached to the bracket without first winding the coil spring, and then the coil spring may be first wound. That is, by forming only the shape of the portion supported by the support member of the first main shaft into a circular cross section, the first main shaft is rotatably supported by the support member, and the other structures are the same as those of the first embodiment. You may make it the same as an example. The operation of the second embodiment will be described below. First, the first main shaft is rotatably supported by the support member with the initial winding stopper engaged with the first pipe receiver. Thereby, the roll screen is attached to the bracket. Next, an initial winding is applied to the coil spring. First,
The first winding stopper is moved in the axial direction of the first main shaft, and the engaging projection of the first winding stopper is engaged with the first engaging groove of the first main shaft. Next, the first winding stopper is rotated by a predetermined amount in a predetermined direction while holding the winding pipe by hand so as not to rotate. As a result, the first spindle, the second spindle,
Since the cylindrical pipe and the spring receiver rotate, the other end of the coil spring is twisted and rotated integrally with the spring receiver, and one end of the coil spring is restrained from rotating together with the winding pipe and the second pipe receiver. This is given the first roll. Then, the decorative cover is fitted to the bracket while holding the first winding stopper by hand so as not to rotate. At this time, since the rib portions of the first winding stopper are fitted into the engagement grooves of the decorative cover, rotation of the first winding stopper is restricted. Accordingly, the rotation of the first main shaft, the second main shaft, the cylindrical pipe, and the spring receiver is restricted, and the first main shaft, the second main shaft, the cylindrical pipe, and the spring receiver are rotated by the elastic force of the coil spring. Is prevented from returning. Also, in the second embodiment,
As in the first embodiment, by fitting the decorative cover to the bracket, it is possible to prevent the initial winding stopper from engaging with the first pipe receiver during use, and to prevent the decorative cover from falling off the bracket. In addition to this, it is possible to obtain an effect that the appearance of the bracket on the first winding stopper side of the roll screen can be improved.

[0010]

According to the present invention, by fitting the decorative cover to the bracket, the decorative cover comes into contact with the flange portion of the initial winding stopper to restrain the axial movement of the initial winding stopper, and to prevent the initial winding stopper from moving in the axial direction. By engaging the decorative cover with the rib portion of the stopper, the decorative cover is prevented from falling off the bracket. As a result, the first winding stopper moves in the axial direction of the main shaft due to the vibration of the take-up pipe when the screen is raised and lowered, and the impact of the weight bar colliding with the take-up pipe when the screen is completely taken up. Is prevented from being engaged. Further, the bracket on the first winding stopper side of the roll screen is covered with the decorative cover, so that the appearance is improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a sectional view near the left end of FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a view showing a state in which a first-turn stopper and a pipe receiver are connected.

FIG. 5 is a view showing a state where a decorative cover is removed from a bracket.

FIG. 6 is a partial front view of a roll screen on a first winding stopper side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Bracket 13 Decorative cover 16 Winding pipe 18 Screen 22 Initial winding stopper 22e Flange part 22f Rib part 24 Operation part 28 First main shaft (main shaft) 32 Second main shaft (main shaft) 36 First pipe receiver (Pipe receiver) 38 Second Pipe receiver (Pipe receiver) 42 Spring receiver 44 Coil spring

Claims (2)

(57) [Claims] 1. A winding pipe (16) rotatably supported at both ends by a bracket (12), and a screen (18) having one end connected to the winding pipe (16) so as to be wound and unwound. And an operation unit (24) configured to be capable of transmitting rotation to the winding pipe (16) but not transmitting rotation from the winding pipe (16). A coil spring device for reducing, wherein the coil spring device integrally rotates with the main shafts (28, 32) supported by the bracket (12) so as not to rotate and the winding pipe (16). A pipe receiver (36, 38) rotatably fitted to the main shaft (28, 32) and being connected to the main shaft (28, 32); and a main shaft (2) not supported by the bracket (12).
8, 32) and a spring receiver (42) that can rotate integrally with it.
The relative rotation between the main shaft (28) and the coil spring (44), one end of which is fixed to the pipe receiver (38) and the other end of which is fixed to the spring receiver (42), is restricted. , The movement in the axial direction is permitted, and the movement of the main shaft (28) in the axial direction switches between a state of being integrally connected to the pipe receiver (36) and a state of being disconnected. In the roll screen (10) having a possible first winding stopper (22) and the following, the connection with the pipe receiver (36) is released by being fitted to the bracket (12). A roll screen, characterized in that a decorative cover (13) that restrains the initial winding stopper (22) in the state so as not to move in the axial direction is detachably provided. 2. A winding pipe having both ends rotatably supported by a bracket; a screen having one end connected to the winding pipe so as to be wound and unwound; and a rotation pipe capable of transmitting rotation to the winding pipe. An operating unit configured to be unable to transmit rotation from the winding pipe, and a coil spring device for reducing a load applied to the operating unit. In the roll screen, the coil spring device can rotate on the bracket. A spindle supported on the winding pipe, rotatably coupled to the winding pipe, and rotatably fitted to the spindle; a spring receiver integrally rotatable with the spindle; The coil spring, whose other end is fixed to the spring holder, and the relative rotation of the main shaft are restricted. However, movement in the axial direction is permitted, and by moving the main shaft in the axial direction, it is possible to switch between a state of being integrally connected to the pipe receiver and a state of being disconnected. A first-wind stopper and a bracket are fitted to the bracket so that the first-wind stopper in a state where the connection with the pipe receiver is released is restrained from rotating and cannot be moved in the axial direction. A roll screen, wherein a decorative cover for restraining the roll screen is provided detachably.