JP4074569B2 - Blind slat angle adjuster - Google Patents

Description

  The present invention relates to a blind slat angle adjusting device for adjusting a tilt angle of a blind slat, and more particularly, to a blind slat angle adjusting device capable of limiting a rotation angle of a slat.

  Conventionally, as this type of blind slat angle adjusting device, for example, a device described in Utility Model Registration No. 2560464 is known. This slat angle adjusting device has a stopper mechanism provided in the head box, and the stopper mechanism has a radial protrusion provided on the rotation shaft and a radial direction allowing rotation of the protrusion more than once. The formed circular hollow part, the ball accommodating part formed by expanding the diameter dimension stepwise on the outer side in the radial direction within the range of the constant circumference of the circular hollow part, and accommodated across the ball accommodating part from the circular hollow part A roller or a ball provided so as to be freely movable in the circumferential direction within a range of a constant circumferential length of the ball housing portion and to be moved in the ball housing portion by being pushed in the forward / reverse rotation direction of the protrusion; It is comprised by. When the rotation shaft is rotated in one direction, the protrusion rotates and the ball is pushed by the protrusion, and when the ball reaches one step of the ball storage section, further movement is restricted, Since the shaft can no longer rotate, and then the rotation shaft is rotated in the other direction, the protrusion rotates more than once, and then the ball reaches the other step of the ball storage part and further rotation is restricted. The rotating shaft can no longer rotate. In this way, the rotation angle of the slat can be limited.

  By the way, in the blind, when the slat width is different, the rotation angle of the rotation shaft in the head box to be rotated is different with respect to the same rotation angle of the slat. Therefore, in the conventional slat angle adjusting device, it is necessary to change the number or shape of the protrusions or change the position of the stepped portion of the ball storage portion according to the slat width, and the parts cannot be shared. There's a problem.

Utility Model Registration No. 2560464

  The problem to be solved by the present invention is to provide a slat angle adjusting device that can be used in common for blinds having different slat widths without depending on the slat widths.

In order to solve the above-described problem, the invention according to claim 1 is configured to rotate and rotate a rotating shaft that is disposed in a head box and is connected to one end of a ladder cord that supports a large number of slats in an aligned state. In a slat angle adjusting device for a blind that makes a tilt angle of a slat variable by rotating a shaft,
Having a regulating means for regulating the rotation amount of the rotary shaft
The restricting means includes: a protrusion that rotates integrally with the rotation shaft and protrudes in the radial direction; a space that allows the protrusion to rotate in the circumferential direction; and a protrusion in the space. And a stopper member for determining a moving range, and the stopper member is characterized in that the position in the space can be adjusted.

  The stopper member may be configured to restrict the rotation by directly interfering with the protrusion, but the invention according to claim 2 is such that the restricting means according to claim 1 is movable in the circumferential direction within the space portion. The moving body is further characterized in that the moving body can move together by interfering with the projecting portion, and the moving range in the space portion is restricted by interfering with the stopper member.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a plurality of holes are formed at predetermined intervals in a side surface defining the side surface of the space portion, and the stopper member is The position of the stopper member can be adjusted by changing the hole to which the stopper member is fitted so as to be detachably fitted in the hole portion.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the hole portion extends through the side surface portion to the outside on the opposite side of the space portion with the side surface portion interposed therebetween, and the stopper member Is inserted from the outside into the hole and can protrude into the space.

  According to the first aspect of the present invention, by adjusting the position of the stopper member, the range in which the protrusion can move within the space can be changed. As a result, the range in which the rotating shaft can rotate is changed, and the amount of one end of the ladder cord that supports the slat is driven by the rotating shaft to change the rotation angle range of the slat.

  When the slat widths are different, even when the slats are rotated by the same angle, the driving amount required for the ladder cord changes and the rotation angle of the rotation shaft changes, but this can be dealt with by adjusting the position of the stopper member. Thus, it can be used in common for blinds having different slat widths without depending on the slat widths. Further, the position of the stopper member can be adjusted in accordance with the rotation angle of the slat desired by the user, and the rotation angle range of the slat that is different for each blind can be set.

  According to the second aspect of the present invention, even in the restricting means in which the projecting portion can rotate 360 degrees or more in the space portion using the moving body, one end of the ladder cord supporting the slat is driven by the rotating shaft. The amount to be played can be changed.

  According to the third aspect of the present invention, the position of the stopper member can be easily adjusted by appropriately selecting the hole in which the stopper member is to be fitted.

  According to the invention of claim 4, since the stopper member can be inserted into the hole portion from the outside, the position of the stopper member can be changed from the outside, without removing the slat angle adjusting device from the blind, The position of the stopper member can be adjusted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments do not limit the present invention.

  FIG. 1 is a plan view of a blind according to an embodiment of the present invention. In the figure, the blind has a head box 12, and a ladder cord 14 is suspended from the head box 12, and a large number of slats 16 are supported in an aligned state by the ladder cord 14.

  That is, each ladder cord 14 suspended from the head box 12 is composed of front and rear vertical cords extending in the vertical direction and a plurality of middle cords that are spaced apart in the vertical direction and connect the front and rear vertical cords. A slat 16 is placed on the middle cord. The upper end of the vertical cord serving as one end of the ladder cord 14 is connected to a rotating shaft 22 disposed in the head box 12, and the lower end serving as the other end is connected to a bottom rail 18 provided below the slat 16.

  The rotary shaft 22 is rotatably supported in the head box 12, and the rotary shaft 22 is provided with a drum 24 corresponding to the ladder cord 14. A pair of the ladder cords 14 is provided on the drum 24. The upper end of the vertical cord is fixed so that it can be wound and unwound. The drum 24 is rotated by rotating the rotating shaft 22, the ladder cord 14 is tilted, and the slat 16 is rotated.

  In this way, the slat angle adjusting device 20 that adjusts the rotation angle of the slat 16 includes a rotation shaft 22 provided with the drum 24, a rotation drive mechanism 26 for rotating the rotation shaft 22, and a rotation angle of the rotation shaft 22. And a regulation mechanism 28 that regulates the above.

  The rotation drive mechanism 26 is provided at one end of the rotation shaft 22, and mainly includes an operation rod 30, a worm shaft 32 coupled to the operation rod 30, and a sleeve 34 in the example of FIG. 2. The upper part of the worm shaft 32 and the sleeve 34 are accommodated in a casing 36 (36A, 36B). The lower part of the worm shaft 32 protrudes from the head box 12, and the operation rod 30 is suspended from the lower end of the worm shaft 32. The worm gear 32a of the worm shaft 32 is engaged with the worm wheel 34a of the sleeve 34, and the rotary shaft 22 is inserted and fitted into the shaft hole 34b of the sleeve 34 having a non-circular cross section. When the operation rod 30 is operated and rotated, the worm shaft 32 rotates integrally, and the rotation is transmitted to the sleeve 34 due to the engagement between the worm gear 32a and the worm wheel 34a, so that the rotary shaft 22 rotates. It has become.

  The restricting mechanism 28 includes a stopper shaft 40 formed to extend from the worm wheel 34a of the sleeve 34 that rotates integrally with the rotating shaft 22, a protrusion 42 that protrudes radially from a part of the stopper shaft 40, and a casing. A space portion 44 formed between the inner peripheral surface of 36 and the outer peripheral surface of the stopper shaft 40; a stopper ball (moving body) 46 that moves in the circumferential direction within the space portion 44; and a stopper member 48. Is done.

  In this example, the stopper member 48 includes two pin members, and is formed in a plurality of holes 36a, 36a,... Formed in the side surface 36b of the casing 36A that defines the side surface of the space 44. Is inserted into the appropriate hole 36 a and protrudes into the space 44.

  As shown in FIG. 3, the stopper ball 46 can move in the circumferential direction between the two pin members, which are the stopper members 48, in the space 44. Any further movement is prevented. On the other hand, the protrusion 42 has a height that does not contact the stopper member 48 in the space 44, and is thus not blocked by the stopper member 48, and can move over 360 degrees. And the stopper ball 46 can be pushed out in the space 44 and moved together. As a result, the movement range is determined by the stopper member 48 via the stopper ball 46.

  The operation of the slat angle adjusting device 20 configured as described above will be described. In order to adjust the angle of the slat 16, when the operating rod 30 is rotated, the direction of rotation is changed from the worm shaft 32 to the sleeve 34 as described above, and the rotating shaft 22 rotates integrally with the sleeve 34. To do. Thereby, one of the vertical cords of the ladder cord 14 fixed to the drum 24 provided on the rotating shaft 22 is unwound from the drum 24 and the other of the vertical cords is wound around the drum 24. The angle of the middle stage is changed to adjust the angle of the slats 16.

  FIG. 4 shows the relationship between the angle of the slat 16 and the restriction mechanism 28. FIG. 4A shows a state in which the angle of the slat 16 is substantially vertical. At this time, the protrusion 42 of the restriction mechanism 28 abuts the stopper ball 46 against one of the stopper members 48. Since the movement of the ball 46 is prevented by the stopper member 48, the sleeve 34 is in a state in which it cannot be rotated further in the counterclockwise direction in FIG.

  The state in which the sleeve 34 rotates clockwise from this state and the protrusion 42 further rotates through the other stopper member 48 is the state shown in FIG. Corresponds to the state where is horizontal.

  Further, from this state, the protrusion 42 passes through one stopper member 48 and abuts from the opposite side of the stopper ball 46, and then rotates further clockwise while pushing the stopper ball 46, so that the stopper ball 46 is moved to the other side. FIG. 4C shows a state where the stopper ball 48 is brought into contact with the stopper member 48 and the movement of the stopper ball 46 is prevented by the stopper member 48 and the sleeve 34 cannot be rotated further clockwise. This corresponds to a state in which the angle of the slat 16 is substantially vertical.

  Thus, in order to prevent the sleeve 34 and the rotary shaft 22 from rotating within the range in which the regulation mechanism 28 can rotate the slat 16, the operator stops the operation when the operation rod 30 cannot rotate, Forcible rotation of the slat 16 can be prevented.

  In the example of FIG. 4, the sleeve 34 and the rotating shaft 22 can be rotated about 450 degrees by the stopper member 48, and the rotating shaft 22 rotates correspondingly to this, thereby corresponding to the rotation of the rotating shaft 22. As the vertical cord of the ladder cord 14 is wound and unwound, the angle of the slat 16 changes. By the way, the amount of winding and unwinding of the vertical cord naturally varies depending on the width of the slat 16. Therefore, in the blinds having different widths of the slats 16, the range in which the sleeve 34 and the rotary shaft 22 can rotate must be changed. In this embodiment, the position of the hole 36a into which the pin member which is the stopper member 48 is fitted is changed. 4 is a case where the slat width is 15 mm, but FIG. 5 is a case where the slat width is 25 mm. In this case, the position of the pin member of the stopper member 48 is changed, The range in which the stopper ball 46 can move is expanded. Thereby, the rotatable range (about 510 degrees) of the sleeve 34 and the rotating shaft 22 is widened, and the amount of winding and unwinding of the vertical cord of the ladder cord 14 can be increased.

  Thus, by adjusting the fitting position of the stopper member 48, the parts can be made common.

  In this example, the rotation angle range of the slat 16 regulated by the regulating means 28 is reversed from the substantially vertical direction shown in FIG. 4A or FIG. It was about 180 degrees to substantially vertical shown in c). However, the present invention is not limited to this, and the rotation angle range of the slat 16 can be appropriately changed at the installation site. For example, when the rotation angle range of the slat 16 is deviated from a desired range at the installation site, the position of the stopper member 48 can be changed to correspond to the desired range. Also, if it is desired to rotate the slat 16 only in a narrower angle range according to the user's preference, for example, one side is rotated up to a vertical angle, while the other side is rotated only within a desired angle range. Can be dealt with by changing the position of the stopper member 48 as shown in FIG.

  Further, the stopper member 48 is not limited to the pin member inserted into the hole 36a, and as shown in FIG. 7, the long hole 36c is formed in the side surface 36b, and the pin is fitted into the long hole 36c. It can also be a member. The inside of the long hole 36c can be moved by changing the direction of the pin member, and can be fixed at an arbitrary position of the long hole 36c by returning the direction of the pin member.

  Moreover, although the above example was an example of the type which the rotation drive mechanism 26 operates the operating rod 30 manually, this invention is not limited to this. As shown in FIG. 8, even if the rotational drive mechanism 26-1 is an electric type by a motor, it is applicable.

  In FIG. 8, the rotation drive mechanism 26-1 has a motor 50, an idling mechanism 52, and a sleeve 54 to which the rotating shaft 22 is coupled. An output shaft 50 a of the motor 50 is interposed via the idling mechanism 52. And transmitted to the sleeve 54.

  The regulating mechanism 58 includes a stopper shaft 60 formed to extend from the sleeve 54, a protrusion 62 projecting radially from a part of the stopper shaft 60, an inner peripheral surface of the casing 56 </ b> B, and an outer periphery of the stopper shaft 60. A space portion 64 formed between the surface portion, a stopper ball (moving body) 46 that moves in the circumferential direction within the space portion 64, and a stopper member 48. Since the operation of the restriction mechanism 58 is the same as that of the restriction mechanism 28, detailed description thereof is omitted. The stopper member 48 is inserted into a hole 56a selected from a large number of holes 56a formed on the side surface 56b of the casing 56B.

  In this example, when the motor 50 continues to rotate after the restriction mechanism 58 restricts the rotation of the sleeve 54 and the rotary shaft 22, the idling mechanism 52 is used to prevent the motor 50 from being loaded. Is provided.

  In this example, the idling mechanism 52 and the regulation mechanism 58 are housed in the casing 56 (56A, 56B) connected to the outer case 50b of the motor 50. It can be changed. Specifically, the casing 56B is fitted to the casing 56A so that the height of the casing 56A can be adjusted, and a long hole 56d is formed in the casing 56A. The screws 57, 57 that pass through the long hole 56d are used for the motor 50. The positions of the outer case 50b and the casing 56 are variable. Depending on the slat width, the height of the rotary shaft 22 in the head box 12 may change, and the height of the motor 50 can be changed accordingly.

  Further, when the holes 36a, 56a and the long holes 36c penetrate the side surfaces 36b, 56b as shown in the figure, the position of the stopper member 48 can be easily adjusted from the outside of the casings 36, 56, and the blind As for the change after the attachment, the position adjustment of the stopper member 48 can be easily performed in the attached state without removing the slat angle adjusting device 20 from the head box 12.

  Further, in the above example, an example using a ball as a moving body has been described. However, the present invention is not limited to this, and a configuration in which the stopper ball is omitted and the direct protrusion 42 is prevented from moving by the stopper member 48 is used. It is also possible.

It is a perspective view showing an example of the blind which can apply the slat angle adjustment apparatus of the blind concerning embodiment of this invention. It is a component expanded view of the slat angle adjustment apparatus of the blind concerning embodiment of this invention. It is sectional drawing showing the assembly state of the slat angle adjustment apparatus of a blind. It is explanatory drawing showing operation | movement of a control means, Comprising: (a) is the state which the protrusion made the moving body contact | abut one stopper member, (b) is the intermediate state of a protrusion, (c) is a protrusion. This represents a state in which the moving body is in contact with the other stopper member. It is explanatory drawing showing operation | movement of the control means when a slat width differs from FIG. 4, Comprising: (a) is the state which made the protrusion contact the one stopper member, (b) is the middle of a protrusion. The state (c) represents a state in which the protrusion makes the moving body contact the other stopper member. It is explanatory drawing showing the control means at the time of changing the rotation angle range of a slat with FIG. It is explanatory drawing showing the other example of a control means. It is a longitudinal cross-sectional view of a slat angle adjusting device when a drive means is electric.

Explanation of symbols

12 Head box 14 Ladder cord 16 Slat 20 Slat angle adjusting device 22 Rotating shaft 28, 58 Restricting means 36a, 56a Hole 36b, 56b Side surface 42, 62 Protrusion 44, 64 Space 46 Stopper ball (moving body)
48 Stopper member

Claims (4)

A rotary shaft (22) disposed at one end of a ladder cord (14) disposed in the head box (12) and supporting a number of slats (16) in an aligned state is driven to rotate. In a blind slat angle adjusting device for changing a tilt angle of a slat (16) by rotation,
There are regulating means (28, 58) for regulating the amount of rotation of the rotating shaft (22),
The restricting means (28, 58) rotate integrally with the rotating shaft (22) and project in the radial direction, and the projecting portions (42, 62) rotate in the circumferential direction. And a stopper member (48) for determining a moving range of the protrusions (42, 62) in the space portion (44, 64). A slat angle adjusting device for a blind, characterized in that its position in the space (44, 64) can be adjusted.   The restricting means (28, 58) further includes a moving body (46) that is movable in the circumferential direction in the space (44, 64), and the moving body (46) includes the protrusion (42, 62) The blind slat according to claim 1, wherein the blind slat is movable together with interference with the stopper member (48), and the movement range in the space (44, 64) is restricted by interference with the stopper member (48). Angle adjustment device.   A plurality of holes (36a, 56a) are formed at predetermined intervals in the side surfaces (36b, 56b) that define the side surfaces of the space (44, 64), and the stopper member (48) The position of the stopper member (48) can be adjusted by changing the hole (36a, 56a) that is detachably fitted into the hole (36a, 56a) and into which the stopper member (48) is fitted. The blind slat angle adjusting device according to claim 1 or 2, characterized by the above.   The hole portions (36a, 56a) extend through the side surface portions (36b, 56b) to the outside on the opposite side of the space portions (44, 64) across the side surface portions (36b, 56b). The blind slat according to claim 3, wherein the stopper member (48) is inserted from the outside into the hole (36a, 56a) and can protrude into the space (44, 64). Angle adjustment device.

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