JPH108860A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items in a reduction gear and simplify structure so as to improve assembly work efficiency. SOLUTION: A reduction gear 46 is composed of a pulley 50 provided in a head box 12 rotatably around an orthogonal direction to the moving direction of a second fastening member 44 as a rotational axis. The pulley 50 has a large diameter part 50b having a circumferential groove part 50a over the whole periphery of an outer peripheral part, a small diameter part 50c protruded in the axial direction coaxially with the large diameter part 50b, a first through hole 50d piercing the large diameter part 50b in the direction of the rotational axis up to the groove part 50a, and a second through hole 50e piercing the large diameter part 50b over the whole length of the rotational axis direction. One end of a stopper release cord 56 is inserted through the first through hole 50d after being wound onto the groove part 50a, then passed on the disc face of the large diameter part 50b and inserted through the second through hole 50e, and then wound onto the small diameter part 50c in the same direction as the groove part 50a and connected to the second fastening member 44. The reduction gear 46 is thereby provided in an intermediate position in the longitudinal direction of the stopper release cord 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a blind.

[0002]

2. Description of the Related Art As a conventional blind, there is one disclosed in Japanese Patent Application No. 7-318965 filed by the present applicant, which includes a first fastening member and a first fastening member. A second fastening member movable between a position where the member is fastened to the member and a position where the fastening is released;
One end of the connection cord is connected to the fastening member, the other end of the connection cord is connected to the speed reducer, one end of the stopper release code is also connected to the speed reducer, and the other end of the stopper release code is outside the head box. When the other end of the stopper release cord is operated,
The moving distance of one end of the connecting cord is smaller than the moving distance of the other end of the stopper releasing cord. The distance from the fastening member can be reduced.

[0003]

However, in the conventional blind as described above, the stopper releasing cord is connected to the speed reducer, and the speed reducer and the second fastening member are connected by the connecting cord, so that the stopper release cord is connected. Since the reduction gear is operated by the cord and the function of the reduction gear at this time is applied to the connection cord to operate the second fastening member, the number of parts is increased, the structure is complicated, and the assembly workability is improved. Is reduced. The present invention is an improvement of the above-mentioned invention in order to solve the above problems.

[0004]

In order to achieve the above-mentioned object, the present invention according to claim 1 of the present invention comprises a head box, a plurality of slats supported in alignment by ladder tape, A bottom rail disposed at the lower end of the slat row, one end is connected to the bottom rail, and the other end is inserted through the slat row and introduced into the head box, and then is led out of the head box. Lifting and lowering cord, a first fastening member, a position for fastening the first fastening member to the first fastening member and restricting the movement of the lifting and lowering cord, and the fastening of the first fastening member is released. A stopper device having a second fastening member movable between a position where the lifting cord is not restrained, and one end connected to the second fastening member and the other end connected to the head. Has been derived from the box, the second
A stopper releasing cord capable of separating a fastening member from the first fastening member; and a second end of the stopper releasing cord being operated in a direction in which the second fastening member is separated from the first fastening member. The stopper releasing cord is interposed at an intermediate position in the longitudinal direction of the stopper releasing cord so that the moving distance of one end of the stopper releasing cord is smaller than the moving distance of the other end of the stopper releasing cord. A speed reducer,
Which is characterized by having

In this way, by interposing the speed reducer at a position halfway in the longitudinal direction of the stopper releasing cord, one end of the stopper releasing cord is directly connected to the second fastening member,
Since the other end of the stopper release cord can be used as the operation end, the operation of the speed reducer when the other end of the stopper release cord is operated is directly applied to one end of the stopper release cord, so that the second fastening member is connected. Can be operated. This eliminates the need to connect the speed reducer and the second fastening member with another member unlike the conventional one, so that the number of parts can be reduced, the structure can be simplified, and the assembling workability is improved. Can be done.

According to a second aspect of the present invention, in the first aspect of the invention, the speed reducer rotates in the head box in a direction orthogonal to a moving direction of the second fastening member. A pulley rotatably provided as a shaft, wherein the pulley includes a large-diameter portion having a circumferential groove over the entire outer peripheral portion, a small-diameter portion protruding in the axial direction concentrically with the large-diameter portion, It has a first through-hole penetrating the diameter part to the groove part in the axial direction, and a second through-hole penetrating the large diameter part over the entire length in the axial direction. One end of the stopper release cord is wound around the groove part. After being inserted into the first through-hole, passing through the disk surface of the large-diameter portion and inserted into the second through-hole, it is wound around the small-diameter portion in the same direction as the groove portion, and is attached to the second fastening member. It is characterized by being connected.

By using the pulley having the above-described structure as the speed reducer, one end of the stopper release cord is wound around the groove of the pulley, then inserted into the first through hole, and then inserted into the second through hole. By winding around the small-diameter portion in the same direction as the groove and connecting to the second fastening member, the reduction gear can be interposed at a position in the longitudinal direction of the stopper releasing cord, thereby simplifying the assembling work. , Work efficiency is improved.

According to a third aspect of the present invention, in the first aspect of the present invention, the speed reducer rotates in the head box in a direction orthogonal to a moving direction of the second fastening member. The crankshaft has one end supported as a shaft, the crankshaft having a first through hole at a position closer to the rotation shaft, and a second through hole at a position axially farther from the rotation shaft than the first through hole. Each of the through holes is formed so as to penetrate the crankshaft in the rotation axis direction, and one end of the stopper release cord is inserted into the first through hole after passing through the second through hole and passing over the crankshaft. And connected to the second fastening member.

By using the crankshaft having the above-described structure as the speed reducer, one end of the stopper release cord is inserted into the second through hole of the crankshaft, then inserted into the first through hole, and fastened to the second fastening member. By doing so, the speed reducer can be interposed at an intermediate position in the length direction of the stopper release cord, so that the assembling work is simplified and the working efficiency is improved.

[0010]

FIG. 1 shows a first embodiment of the present invention. A plurality of slats 10 are arranged at predetermined intervals in the vertical direction. A head box 12 is arranged at the upper end of the ten rows of slats, and a bottom rail 14 is arranged at the lower end.

A ladder tape 16 is provided between the head box 12 and the bottom rail 14, and each slat 10 is supported by the ladder tape 16. The upper end of the ladder tape 16 is rotatably connected to a rotating drum 17 rotatably provided in the head box 12, and the slat 10 can change the inclination angle by the rotation of the rotating drum 17. It is.

A tilter 2 is provided at one end of the head box 12.
The upper end of a hollow tilter input shaft 22 is rotatably connected to the tilter 20. A rotation shaft 23 that can rotate integrally with the rotation drum 17 is connected to the tilter 20, and rotation of the tilter input shaft 22 is transmitted to the rotation shaft 23 by the tilter 20. The lower end of the tilter input shaft 22 is led out of the head box 12, and is connected to a hollow rotary operation rod 24 which can be integrally rotated by a connecting device 40 and can change the connecting angle. As shown in FIG. 2, a hollow grip 32 is provided at a lower end of the rotary operation rod 24, and a guide groove 32 a is formed in the grip 32 in a vertical direction thereof. In the grip 32, an insertion portion 33 of the lever 33 is provided.
a is guided by the guide groove 32a and is movably inserted in the up-down direction of the grip 32.
A through hole 33b penetrating in the middle and up and down directions is formed.
A separator 31 is fitted to the grip 32 below the insertion portion 33a of the lever 33 in FIG. 2 so as to be movable in the vertical direction in FIG. 2, and the separator 31 is provided with a predetermined interval in the circumferential direction. 2, two holes 31a and 31b opened toward the outer periphery over the entire vertical direction, and the separator 31 is placed at a different position from these holes.
An insertion hole 31c penetrating in the middle and vertical directions, and a separator 31
2, an insertion hole 3 penetrating from the lower end in FIG. 2 to an intermediate position in the vertical direction, and the upper portion thereof is open toward the outer peripheral portion.
1d are formed respectively.

The lifting cord 18 has one end at the bottom rail 1.
4 and the other end thereof is inserted through an insertion hole (not shown) provided in
Through the stopper device 21 provided near one end in the head box 12, through the through hole of the tilter input shaft 22, the connecting device 40, the rotary operation rod 24, and the lever 33 inside the grip 32. 33b and the holes 31a and 31b of the separator 31 are respectively inserted into the holes 31a and 31b so as to be able to move up and down, and are respectively connected to the knobs 26 arranged below the grip 32.

The stopper device 21 includes a first fastening member 4.
2 and a second fastening member 44 constantly biased by the spring 25 in a direction of fastening to the first fastening member 42, and the first fastening member 42 and the second fastening member 44
Does not restrict the movement of the lifting cord 18 inserted between them in the upward direction of the slat 10, but can restrain the movement of the downward movement of the slat 10 in the downward direction.

A speed reducer 46 is provided between the stopper device 21 and the tilter input shaft 22.
The case 48 includes a case 48 fixed in the head box 12, and a pulley 50 rotatably provided on the case 48 about a direction orthogonal to the moving direction of the second fastening member 44 as a rotation axis. As shown in FIG. 3, the pulley 50 has a large-diameter portion 50b having a circumferential groove 50a over the entire outer peripheral portion thereof, and a small-diameter portion 50c that projects axially concentrically with the large-diameter portion 50b. A first through hole 50d penetrating through the large diameter portion 50b to the groove portion 50a in the rotation axis direction, and a second through hole 50e penetrating through the large diameter portion 50b over the entire length in the rotation axis direction.
And

As shown in FIGS. 3 and 4A and 4B, the pulley 50 has one end connected to the second fastening member 44 and the other end guided toward the tilter input shaft 22. More specifically, one end of the stopper release cord 56 is wound around the groove 50a of the pulley 50 and then inserted into the first through hole 50d. After passing through the second through hole 50e through the disk surface of the diameter part 50b, it is wound around the small diameter part 50c in the same direction as the groove part 50a, and is connected to the second fastening member 44. At this time, the stopper release cord 56
The portions inserted into the first through-hole 50d and the second through-hole 50e are frictionally engaged with these, so that the pulley 50
Is restricted so that it cannot move in the first through-hole 50d and the second through-hole 50e with a load for rotating the. The other end of the stopper release cord 56 is connected to the tilter input shaft 22, the coupling device 40, the rotary operation rod 24, the through hole 33 b of the lever 33 inside the grip 32, and the separator 3.
After passing through the one insertion hole 31c, it is folded back at the lower part of the separator 31 to be inserted into the insertion hole 31d, and the knot 56a is formed at the upper part of the insertion hole 31d, thereby being fixed to the separator 31.

Next, the operation of the first embodiment will be described. As shown in FIGS. 1 and 4A, the second fastening member 44 is fastened to the first fastening member 42 by the elastic force of the spring 25, and the movement of the lifting cord 18 is restricted. When the restraint of the lifting cord 18 is released and the slat 10 is lowered, the lever 33 is pulled downward in FIG. 1 and the separator 31 is pushed down by the insertion portion 33a as shown by a two-dot chain line in FIG. Is lowered. As a result, the stopper release cord 56 is pulled rightward in FIG. 4B, and the portion of the stopper release cord 56 that is engaged with the first through hole 50d pulls the pulley 50 in the direction shown in FIG. Since the pulley 50 is pulled so as to rotate in the clockwise direction, the pulley 50 is pulled in FIG.
The stopper releasing cord 56 wound around the groove 50a is unwound from the groove 50a while being rotated counterclockwise. In addition, the rotation of the pulley 50 causes the small-diameter portion 50 to rotate.
c is further wound around the small-diameter portion 50c, and the second fastening member 44 is
5B. The member moves in a direction away from the first fastening member 42 against the elastic force of No. 5 to be in a state shown in FIG. At this time, since the small-diameter portion 50c has a smaller radial dimension than the groove portion 50a, the length of the stopper releasing cord 56 wound on the small-diameter portion 50c is smaller than the length of the radius dimension. The first fastening member 42 of the second fastening member 44 is smaller than the pull-down amount of the lever 33 because
The moving distance in the direction away from the distance is reduced. Accordingly, the lifting cord 18 is released from the restraint to such an extent that the bottom rail 14 and the slat 10 can be lowered by their own weight, but is not completely released. As a result, the bottom rail 14 and the slat 10 are gradually lowered, so that the impact force at the time of the lowest descent is reduced, and the cause of component damage can be eliminated.

Next, when the stopper device 21 is fastened again, the hand is released from the lever 33, and the force for pulling the other end of the stopper releasing cord 56 downward in FIG. 1 is released. As a result, the second fastening member 44 moves in the direction in which the second fastening member 44 is fastened to the first fastening member 42 by the elastic force of the spring 25, and thus one end of the stopper release cord 56 is moved together with the second fastening member 44 in FIG. 4B, the portion of the stopper releasing cord 56 engaged with the second through hole 50e is pulled so as to rotate the pulley 50 clockwise in FIG. 4B. b) The stopper releasing cord 56 wound around the small diameter portion 50c is unwound from the small diameter portion 50c while being rotated clockwise.
Further, by the rotation of the pulley 50, the stopper releasing cord 56 wound around the groove 50a is further wound around the groove 50a, and the other end of the stopper releasing cord 56 is pulled upward in FIG. Is the lever 33 in FIG.
The other end of the stopper release cord 56 rises while being pushed upward in the middle. As shown in FIG. 4A, when the second fastening member 44 is fastened to the first fastening member 42, the rotation of the pulley 50 stops, and the lifting of the separator 31 and the lever 33 stops.

In the first embodiment, one end of the stopper releasing cord 56 is wound around the groove 50a of the pulley 50, and then inserted into the first through hole 50d.
0e, is wound around the small-diameter portion 50c in the same direction as the groove 50a, and is connected to the second fastening member 44. Since the reduction gear 46 can be easily assembled to the device 21, the assembling work is simplified, and the working efficiency is improved. Also, as in the conventional case,
Since there is no need to connect the second fastening member 44 with the second fastening member 44, the number of components can be reduced.

Further, the speed reducer 46 is configured such that the ratio of the diameter of the small diameter portion 50c of the pulley 50 to the groove 50a in the radial direction makes the second end of the stopper release cord 56 second with respect to the moving distance of the other end of the stopper release cord 56. First fastening member 44
Since the ratio of the moving distance to be separated from the fastening member 42 is determined and the magnitude of the resistance applied to the elevating cord 18 is determined, the pulley 50 to be interposed in the stopper releasing cord 56 has a small diameter portion 50c and a groove 50a. By simply changing the ratio of the radial dimension to a value having a desired value, the lifting cord 1
By changing the magnitude of the resistance force applied to the stopper 8, the fastening force of the stopper device 21 can be adjusted to a desired value.

FIGS. 5A and 5B show a second embodiment of the present invention. The reduction gear transmission 60 shown in FIG.
In this embodiment, the pulley 50 of the reduction gear transmission 46 is replaced with a crankshaft 62, and the other configuration is the same as that of the first embodiment. One end of the crankshaft 62 is supported by the case 48 with a direction orthogonal to the moving direction of the second fastening member 44 as the rotation axis 62c. The first through hole 62a is located at a position near the rotation axis 62c. The second through holes 62b are formed at positions farther in the axial direction than the rotation shaft 62c than the rotation shaft 62a so as to pass through the crankshaft 62 in the rotation shaft 62c direction. The stopper release cord 56 is inserted into the first through hole 62a through the crankshaft 62 after one end thereof is inserted into the second through hole 62b, and is connected to the second fastening member 44. Similarly to the first embodiment, the first
The portions inserted into the through-holes 62a and the second through-holes 62b are in frictional engagement with these, so that the first through-holes 62a and the second through-holes 62 can be rotated under the load for rotating the crankshaft 62.
It is restricted so that it cannot move inside b.

Next, the operation of the second embodiment will be described. When the slat 10 is lowered, the other end of the stopper releasing cord 56 is lowered by performing the same operation as in the first embodiment. As a result, the portion of the stopper release cord 56 located in the second through hole 62b is
(A) Pulling the crankshaft 62 in the middle right direction as shown in FIG.
(A) Rotate in the clockwise direction to stop stopper release code 5
6 both move in the rightward direction in FIG. 5 (a) because both the portion located in the second through hole 62b and the portion located in the first through hole 62a move one end of the stopper release cord 56 in FIG. (A) Moving to the middle right direction, the second fastening member 44 is moved in a direction away from the first fastening member 42 against the elastic force of the spring 25, and the state shown in FIG. . At this time, since the second through-hole 62b of the crankshaft 62 is located farther from the rotation shaft 62c than the first through-hole 62a, the distance by which the second through-hole 62b moves rightward in FIG. Since the distance that the first through hole 62a moves to the right in FIG.
6 is compared with the movement distance of the other end of the stopper 6.
The moving distance of the one end of the frame becomes small. Therefore, similarly to the first embodiment, the release amount of the stopper device 21 can be reduced, and the same effect as that of the first embodiment can be obtained.

Next, when the stopper device 21 is fastened again, the force for pulling the other end of the stopper release cord 56 downward is released by operating in the same manner as in the first embodiment. Thereby, the second fastening member 44 is formed by the elastic force of the spring 25.
Move in the direction of fastening to the first fastening member 42, one end of the stopper release cord 56 is pulled leftward in FIG. 5B together with the second fastening member 44, and the first of the stopper release cord 56 is The portion located in the through hole 62a rotates the crankshaft 62 counterclockwise in FIG. 5B. By this rotation, the second of the stopper release cord 56
Portion Located in Through Hole 62b and First Through Hole 62a
5B move leftward in FIG. 5B, the other end of the stopper release cord 56 rises as in the first embodiment, and is shown in FIG. 5A. Thus, when the second fastening member 44 is fastened to the first fastening member 42, the rotation of the stopper release cord 56 stops, and the lifting of the separator 31 and the lever 33 stops.

In the second embodiment, one end of the stopper release cord 56 is connected to the second through hole 6 of the crankshaft 62.
2b, and then into the first through hole 62a to
By simply connecting the speed reducing device 60 to the stopper device 21 by simply connecting the speed reducing device 60 to the stopper releasing cord 56 at a position in the length direction of the stopper releasing cord 56 by simply connecting the speed reducing device 60 to the stopper member 21, the assembly work is simplified. And work efficiency is improved. Further, since it is not necessary to connect the speed reducer 60 and the second fastening member 44 with another member as in the related art, the number of parts can be reduced.

The first through hole 62a of the crank shaft 62
The one end of the stopper release cord 56 with respect to the moving distance of the other end of the stopper release cord 56 is determined by the ratio of the length of the second through hole 62b to the rotation shaft 62c.
4 is separated from the first fastening member 42, and the magnitude of the resistance applied to the elevating cord 18 is determined. Therefore, the crankshaft 62 interposed in the stopper releasing cord 56 is connected to the first through hole 62a. Only by changing the ratio of the length of the second through hole 62b from the rotation shaft 62c to a value having a desired value, the magnitude of the resistance force applied to the lifting / lowering cord 18 is changed, and the fastening force of the stopper device 21 is changed to a desired value. Can be adjusted.

[0026]

As described above, according to the first aspect of the present invention, one end of the stopper releasing cord is connected to the stopper releasing cord by interposing the speed reducer at a position in the longitudinal direction of the cord. Since the other end of the stopper release cord can be used as an operation end by directly connecting to the second fastening member, the function of the speed reducer when the other end of the stopper release cord is operated is attached to one end of the stopper release cord. The second fastening member can be operated by directly acting. This allows
Unlike the prior art, there is no need to connect the speed reducer and the second fastening member with another member, so that the number of parts can be reduced, the structure can be simplified, and the assembling workability can be improved. it can.

According to a second aspect of the present invention, in the first aspect of the present invention, one end of the stopper releasing cord is wound around the groove of the pulley and then inserted into the first through hole. The reduction gear can be interposed at a position in the longitudinal direction of the stopper releasing cord by being inserted into the rear second through hole, wound around the small diameter portion in the same direction as the groove, and connected to the second fastening member. Therefore, the assembling work is simplified, and the working efficiency is improved.

According to a third aspect of the present invention, in the first aspect of the present invention, one end of the stopper release cord is inserted into the second through hole of the crankshaft and then inserted into the first through hole. By fastening to the second fastening member, the speed reducer can be interposed at a position in the length direction of the stopper releasing cord, so that the assembling work is simplified and the working efficiency is improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a blind according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view near a grip.

FIG. 3 is a perspective view of a pulley portion.

FIG. 4A is a plan view showing a state of the stopper device and the speed reduction device when the stopper device of the first embodiment is fastened, and FIG. 4B is a plan view of the stopper device of the first embodiment. It is a top view showing the state of a stopper device and a reduction gear at the time of release of.

FIG. 5A is a plan view showing a state of the stopper device and the speed reducer when the stopper device of the second embodiment is fastened, and FIG. 5B is a stopper device of the second embodiment. It is a top view showing the state of a stopper device and a reduction gear at the time of release of.

[Explanation of symbols]

 12 Head Box 44 Second Fastening Member 46 Reduction Gear 50 Pulley 50a Groove 50b Large Diameter 50c Small Diameter 50d First Through Hole 50e Second Through Hole 56 Stopper Release Code

Claims (3)

[Claims] 1. A head box, a number of slats supported in alignment by ladder tape, a bottom rail disposed at a lower end of the slat row, one end connected to the bottom rail, and the other end connected to the bottom rail. After the slat row is inserted and introduced into the head box, a lifting / lowering cord derived from the head box is disposed in the head box, and fastened to the first fastening member and the first fastening member. A stopper device having a position for restraining the movement of the elevating cord and a second fastening member movable between a position where the fastening with the first fastening member is released and the elevating cord is not restrained; One end is connected to the second fastening member and the other end is led out of the head box, and the second fastening member is separated from the first fastening member. A stopper releasing cord Noh, when the other end of the stopper releasing cord in the direction in which the second fastening member is spaced apart from the first fastening member is operated,
A speed reducer interposed at an intermediate position in the longitudinal direction of the stopper releasing cord so that the moving distance of one end of the stopper releasing cord is made smaller than the moving distance of the other end of the stopper releasing cord. And a blind having 2. The speed reducer is a pulley rotatably provided in the head box with a direction perpendicular to a moving direction of the second fastening member as a rotation axis. A large-diameter portion having a circumferential groove portion, a small-diameter portion concentrically projecting with the large-diameter portion in the axial direction, a first through hole penetrating the large-diameter portion to the groove portion in the axial direction, and One end of the stopper release cord is inserted into the first through hole after being wound around the groove portion, and passes through the disc surface of the large diameter portion. Second
The blind according to claim 1, wherein the blind is wound around the small diameter portion in the same direction as the groove after being inserted into the through hole, and is connected to the second fastening member. 3. The reduction gear transmission is a crankshaft having one end supported in the head box with a direction orthogonal to a moving direction of the second fastening member as a rotation axis, wherein the crankshaft includes a rotation shaft. The first through hole is near
A second through hole is formed at a position farther in the axial direction with respect to the rotation shaft than the first through hole, so as to penetrate the crankshaft in the rotation axis direction, respectively. After passing through the second through-hole, it is passed through the crankshaft, then through the first through-hole,
The blind according to claim 1, wherein the blind is connected to a fastening member.