JP4829174B2 - blind - Google Patents

Description

  The present invention relates to a blind capable of controlling a rotation angle at which a slat is stopped or a rotation range of the slat in a blind capable of rotating a slat.

  Conventionally, a blind described in Patent Document 1 is known as a blind capable of stopping a slat at a predetermined rotation angle. The blind described in Patent Document 1 includes a rotation shaft rotatably disposed in an upper beam groove, and a motion stopper that is disposed on the rotation shaft and has a plurality of grooves formed in the circumferential direction of the outer peripheral surface. A lock having a block, a pair of bases located on both sides of the detent block, a base end portion pivotally supported by the pair of bases, and a lock claw that engages the groove at a position away from the base end portion A member and a spring that biases the lock member in the closing direction are provided. Then, the lock pawls of the pair of lock members can be engaged with the grooves of the detent block so that the detent block is clamped to prevent the rotation of the detent block. The rotation axis is locked so as not to rotate due to the backlash, and the angle of the slat can be set and held.

Japanese Utility Model Publication No. 5-35996

  However, in the configuration of Patent Document 1, since the locking claw and the groove are engaged, the rotation of the slat cannot be completely prevented. Therefore, even when the rotation shaft is rotated more than necessary, the movement is stopped. The block can be rotated, which may cause a load on the slats and the strings supporting the slats and cause a failure.

  Moreover, in the structure of patent document 1, since many groove | channels are continuously formed in the outer peripheral surface of a detent | blocking block, stopping a slat from the many groove | channels to the predetermined rotation angle is not possible. Have difficulty.

  The present invention has been made in view of such a problem, and a first object is to provide a blind capable of stopping the slat at a predetermined rotation angle and preventing the slat from rotating more than a predetermined rotation angle. Is to provide.

  A second object of the present invention is to provide a blind capable of stopping a slat at a predetermined rotation angle and adjusting the rotation angle.

  A third object of the present invention is to provide a blind capable of preventing a slat from rotating beyond an allowable rotation angle range and adjusting the rotation angle range.

In order to achieve the above-mentioned object, the invention according to claim 1 is supported by a head box, a rotating shaft rotatably supported in the head box, and a ladder cord connected to the rotating shaft. In a blind comprising a slat that performs a rotation operation in conjunction with the rotation of the shaft, and an operation unit that rotationally drives the rotation shaft,
A rotating body that can rotate integrally with the rotating shaft, and has an engaging portion and a contact surface orthogonal to the circumferential direction;
A non-rotating body that is disposed in a non-rotatable manner and has an engaged portion that can be engaged with the engaging portion; and a contacted surface that can be contacted by the contact surface;
When the engaging portion and the engaged portion are engaged, a click feeling can be transmitted to the operation portion at a predetermined rotation angle of the slat. By contacting the contact surface, rotation of the slat over a predetermined rotation angle is restricted.

  According to a second aspect of the present invention, the non-rotating body according to the first aspect has one or more engaged parts, and the positions of at least some of the engaged parts are around the axis of the rotating shaft. The position can be adjusted.

  According to a third aspect of the present invention, the abutting surface of the rotating body according to the first or second aspect is a pair of abutting surfaces spaced in the circumferential direction, and the non-rotating body is one abutting surface. A first receiver having a contacted surface that can come into contact with the second contact member, and a second receiver that can come into contact with the other contact surface. The relative position can be adjusted, whereby the distance in the circumferential direction between the contacted surface of the first receiver and the contacted surface of the second receiver can be adjusted.

The invention according to claim 4 is supported by a head box, a rotating shaft rotatably supported in the head box, and a ladder cord coupled to the rotating shaft, and rotates in conjunction with the rotation of the rotating shaft. In a blind comprising: a slat that performs the operation; and an operation unit that rotationally drives the rotating shaft.
A rotating body that can rotate integrally with the rotating shaft, and has an engaging portion;
A non-rotating body that is disposed in a non-rotatable manner and has an engaged portion that is engageable with the engaging portion;
When the engaging portion and the engaged portion are engaged, a click feeling can be transmitted to the operation portion at a predetermined rotation angle of the slat, and the engaged portion is positioned. It is provided to be adjustable.

  According to a fifth aspect of the present invention, the rotating body and the non-rotating body according to any one of the first to fourth aspects are urged by an elastic body in a direction in which the rotating body and the non-rotating body always approach each other. When the engagement with the engaged portion is released, both are separated against the urging force of the elastic body.

  According to a sixth aspect of the present invention, the engaging portion of the rotating body and the engaged portion of the non-rotating body according to any one of the first to fifth aspects face each other perpendicular to the axial direction of the rotating shaft. It is characterized by being formed on the surface to be touched.

The invention according to claim 7 is supported by a head box, a rotating shaft rotatably supported in the head box, and a ladder cord coupled to the rotating shaft, and is rotated in conjunction with the rotation of the rotating shaft. In a blind comprising: a slat that performs the operation; and an operation unit that rotationally drives the rotating shaft.
A rotating body that can rotate integrally with the rotating shaft and has a pair of circumferentially spaced contact surfaces;
A non-rotating body that is disposed in a non-rotatable manner and has a pair of contacted surfaces that can contact each of the pair of contact surfaces;
The rotation of the slats beyond a predetermined rotation angle can be restricted by the contact between the contact surface and the contacted surface, and the circumferential distance between the pair of contacted surfaces is adjusted. It is possible to be provided.

  According to the first aspect of the present invention, since the click feeling can be transmitted to the operation portion by the engagement between the engaging portion and the engaged portion, the operator who operates the operation portion based on the click feeling. Can stop the operation, and can stop the slat at a predetermined rotation angle.

  In addition, the contact surface and the contacted surface are in contact with each other, so that the rotation of the slats beyond a predetermined rotation angle can be restricted, and an excessive load is prevented from being applied to the slats and ladder cords that support the slats. can do.

  Since the rotating body is provided with the engaging portion and the contact surface, and the non-rotating body is provided with the engaged portion and the contact surface, the rotation angle between the rotation angle at which the slat is desired to be stopped and the rotation angle at which the rotation is desired to be restricted is provided. Can be set without deviation.

  According to the second aspect of the present invention, the rotation angle at which the slat is desired to be stopped can be arbitrarily adjusted by adjusting the position of the engaged portion.

  According to the third aspect of the present invention, by adjusting the circumferential distance between the abutted surface of the first receiver and the abutted surface of the second receiver, the rotation range that the slat wants to regulate can be arbitrarily set. Will be able to adjust.

  According to the invention of claim 4, since the click feeling can be transmitted to the operation portion by the engagement of the engaging portion and the engaged portion, the operator who operates the operation portion based on the click feeling. Can stop the operation, and can stop the slat at a predetermined rotation angle. By adjusting the position of the engaged portion, the rotation angle at which the slat is desired to be stopped can be arbitrarily adjusted.

  According to the fifth aspect of the present invention, the elastic body biases the rotating body and the non-rotating body in the approaching direction, thereby ensuring the engagement between the two and transmitting a clear click feeling to the operation unit. can do.

  According to the sixth aspect of the present invention, the engagement and the disengagement of the engaging portion of the rotating body and the engaged portion of the non-rotating body are performed using the movement of the rotating shaft in the axial direction. The longitudinal direction of the blind headbox can be used, and the size of the blind can be reduced without increasing the size of the blind.

  According to the seventh aspect of the present invention, the contact surface and the contacted surface are in contact with each other, whereby the rotation of the slats beyond a predetermined rotation angle can be regulated, and the slats, ladder cords supporting the slats, and the like An excessive load can be prevented. By adjusting the distance in the circumferential direction between the pair of abutted surfaces, it is possible to arbitrarily adjust the rotation range that the slat wants to regulate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall front view of a blind according to an embodiment of the present invention.

  In the figure, 10 is a blind, and the blind 10 has a head box 12 fixed to a mounting fixing surface by a bracket. A rotary shaft 14 is rotatably supported in the head box 12, and a plurality of rotary drums 16 are provided on the rotary shaft 14 so as to be integrally rotatable apart from each other in the axial direction. An upper end of a ladder cord 18 is connected to the rotating drum 16, and the ladder cord 18 is suspended from the head box 12 to support a large number of slats 20 in an aligned state in the vertical direction.

  One end of the rotating shaft 14 is connected to a tilter 22 having a built-in gear, and the tilter 22 is connected to an operation rod 24 constituting an operation unit. By operating the operating rod 24 to rotate, rotation of the rotary shaft 14 is generated via the tilter 22, and the ladder cord 18 is tilted by the rotation of the rotary shaft 14 so that the slat 20 rotates. It has become.

  Further, a lifting / lowering cord 28 is suspended from the head box 12. The lifting / lowering cord 28 passes through each slat 20, and one end of the lifting / lowering cord 28 is attached to the bottom rail 25 disposed below the slat 20. After the head box 12 is introduced, the other end of the lifting / lowering cord 28 extends through the head box 12 in the longitudinal direction and passes through a stopper 27 fixed in the head box 12, and is led out from one end of the head box 12 for lifting / lowering. The operation unit is configured.

  Further, on both sides of the blind 10, a guide wire 29 that penetrates the slat 20 and regulates the position of the slat 20 is stretched between the head box 12 and the fixed surface.

  A slat rotation control mechanism 30 for controlling the rotation of the slat 20 is provided in the head box 12. As shown in FIGS. 2 and 3, the slat rotation control mechanism 30 rotates in a case 32 fixed to the head box 12 in the head box 12 and supported by the case 32 so as to be rotatable and non-movable in the axial direction. A second rotating shaft 34 that engages with the non-circular outer peripheral surface of the shaft 14 and rotates integrally with the rotary shaft 14, and a non-circular outer peripheral surface of the second rotating shaft 34 that fits with the second rotating shaft 34. A rotating body 36 that is non-rotatable and movable in the axial direction; a first receiver 38 and a second receiver 40 that are aligned with the rotating body 36 along the axial direction of the rotating shaft 14 and are fixed to the case 32; And a spring 42 as an elastic body wound around the outside of the second rotation shaft 34.

  The rotating body 36 that can rotate integrally with the rotating shaft 14 via the second rotating shaft 34 is formed with a protruding portion 36a that protrudes in the radial direction from the outer peripheral portion in the circumferential direction. The central angle of the protrusion 36a is approximately 90 degrees. An engaging portion 36b and a cutout portion 36d are formed on the end surface of the protruding portion 36a perpendicular to the axial direction of the rotating shaft 14 as a concave portion having a triangular cross section. Although the number of the engaging portions 36b is arbitrary, it is two in this example, and they are formed apart from each other in the circumferential direction. Moreover, the both end surfaces of the protrusion part 36a orthogonal to the circumferential direction are the contact surfaces 36c, respectively.

  Each of the first receiver 38 and the second receiver 40 fixed to the case 32 constitutes a non-rotating body, and both face the rotating body 36 along the axial direction. The end surfaces of the first receiver 38 and the second receiver 40 that are orthogonal to the axial direction are convex portions having a triangular cross section, and can be engaged with the engaging portion 36b of the rotating body 36. Joint portions 38a and 40a are formed. In this example, the number of engaged parts is two in total, but the number can be set as appropriate. The first receiver 38 and the second receiver 40 are formed with projecting portions 38b and 40b extending to the outer peripheral side of the rotating body 36, and the projecting portions 38b and 40b are respectively contacted with the rotating body 36. Contacted surfaces 38c and 40c that can contact the contact surface 36c are formed, respectively.

  The spring 42 is inserted between a flange 34 a formed at one end of the second rotating shaft 34 and the end surface of the rotating body 36, and the rotating body 36 is always in the first receiver 38 and the second receiver 40. The rotating body 36 and the non-rotating body are biased so as to approach each other.

  The positional relationship among the engaging portion 36b, the engaged portions 38a and 40a, the contact surface 36c, and the contact surfaces 38c and 40c will be described together with the operation of the blind.

  In this blind 10, as shown in FIG. 7, the allowable rotation range of the slat 20 is rotated from the horizontal state (FIG. 7 (a)) to the back side (that is, clockwise in FIG. 7). The slat 20 can be stopped at a position of 45 degrees (FIG. 7B) in the middle of the rotation range, which is about 90 degrees until the substantially vertical state (FIG. 7C) is closed. To. Therefore, when the slat 20 is in a horizontal state, the relationship between the rotating body 36, the first receiver 38, and the second receiver 40 is as shown in FIGS. 4 (a), 5 (a), and 6 (a). In addition, one contact surface 36 c of the rotating body 36 is in contact with the contacted surface 38 c of the first receiver 38. Further, one engaging portion 36 b of the rotating body 36 is engaged with the engaged portion 38 a of the first receiver 38. Therefore, even if it is attempted to rotate the slat 20 further forward (that is, counterclockwise in FIG. 7) and operate the operating rod 24 to rotate the rotating shaft 14, the rotation rotating integrally with the rotating shaft 14. Since the body 36 is prevented from rotating in one direction, the slat 20 does not rotate any further.

  When the operating rod 24 is operated so as to rotate the slat 20 to the back side, the rotating shaft 14 rotates in the opposite direction. As the rotating shaft 14 rotates, the engagement between the engaging portion 36b of the rotating body 36 and the engaged portion 38a is released as shown in FIGS. The rotator 36 rotates in the same direction with a slight separation from the first receiver 38 against the force. Then, as shown in FIGS. 4C, 5C, and 6B, when rotated by 45 degrees, the other engaging portion 36b of the rotating body 36 is engaged with the engaged portion 38a. That is, the angle formed between the two engaging portions 36b of the rotating body 36 is set to 45 degrees. When the engaging portion 36b of the rotating body 36 is engaged with the engaged portion 38a, the engagement is transmitted as a click feeling to the operating rod 24 through the rotating shaft 14, so that the operator can move to the 45 ° rotation position. Knowing that it has been reached, you can stop the operation. When the operation is stopped at this position, the slat 20 can be stopped in a state rotated by 45 degrees. Thus, the slat 20 can be stopped at a predetermined rotation angle.

  When the operating rod 24 is further operated, the rotating shaft 14 further rotates, and with the rotation of the rotating shaft 14, the engagement between the engaging portion 36b of the rotating body 36 and the engaged portion 38a is released, and the elasticity of the spring 42 is reached. The rotating body 36 rotates in the same direction with a slight separation from the first receiver 38 and the second receiver 40 against the force. When the slat 20 is in a substantially vertical state, the other abutment surface 36c of the rotating body 36 is connected to the second receiver 40 as shown in FIGS. 4 (d), 5 (d) and 6 (c). Since it abuts against the abutted surface 40c, further rotation of the slat 20 is prevented. At the same time, since one engaging portion 36b of the rotating body 36 engages with the engaged portion 40a of the second receiver 40, the engagement is transmitted as a click feeling to the operating rod 24 via the rotating shaft 14, The operator can recognize that the substantially vertical state has been reached and can stop the operation.

  4 (d), 5 (d) and 6 (c), when the operating rod 24 is operated to the near side, the rotating shaft 14 rotates in the opposite direction, and when the slat 20 is in a horizontal state, the rotating body 36 is rotated. The one abutting surface 36c abuts on the abutted surface 38c of the first receiver 38, and at the same time, the one engaging portion 36b engages with the engaged portion 38a of the first receiver 38 to operate the A click feeling can be transmitted to the bar 24.

  Thus, in this embodiment, when the slat 20 is in the horizontal state, the 45-degree rotational position, and the substantially vertical state, the operating rod 24 is clicked by the engagement between the engaging portion 36b and the engaged portions 38a and 40a. Since the operator stops the operation based on the click feeling, the slat 20 can be surely stopped at those angles. Further, if the engaging force between the engaging portion 36b and the engaged portions 38a and 40a is too strong, it becomes a resistance to release the engagement and rotate the slat 20 from the rotational angle state. By providing the engagement force, a restraining force that maintains the slat 20 in each determined rotational angle state can be obtained. It is also possible to adjust the engagement force by adjusting the urging force by the spring 42. As a result of ensuring the engagement by the urging force by the spring 42, a clear click feeling can be transmitted to the operation rod 24. It can also be a binding force. Engagement / disengagement between the engaging portion 36b of the rotating body 36 and the engaged portions 38a, 40a of the first receiver 38 and the second receiver 40 is performed by using the axial movement of the rotating shaft. Therefore, the longitudinal direction of the head box 12 can be used, and the size of the blind is not increased.

  Further, in this embodiment, the rotation of the rotary shaft 14 is restricted by the contact between the contact surface 36c and the contacted surfaces 38c and 40c in each rotation angle state of the slat 20 in a horizontal state and a substantially vertical state. The rotation of the slat 20 beyond a predetermined rotation range can be prevented. Thus, by suppressing the rotation of the slat 20 within a desired rotation range, it is possible to prevent an excessive load from being applied to the slat 20 and the ladder cord 18.

  Since both the engaging portion 36b and the contact surface 36c are formed on the rotating body 36, the relationship between the rotation angle desired to be stopped and the rotation range desired to restrict the rotation can be maintained. It is possible to suppress the occurrence of deviation between the rotation range in which the rotation is desired to be restricted.

  In this embodiment, the first receiver 38 and the second receiver 40 are separate members, but they can also be configured as an integral part. However, when the first receiver 38 and the second receiver 40 are separate parts, the rotation angle of the slat 20 to be stopped is adjusted by adjusting the angle of the first receiver 38 with respect to the second receiver 40. And / or the rotation range which the slat 20 wants to control can be changed. For this reason, the second receiver 40 can rotatably support the first receiver 38.

  For example, as shown in FIG. 8, in the case where the blind 10 itself is inclined and attached, the rotation range of the slat 20 is changed from the horizontal state (FIG. 8 (a)) to the fully closed state (FIG. 8 (c)). In this case, the rotation range changes by the inclination angle, and the slat 20 is inclined by the inclination angle with respect to the head box 12 in the horizontal state of the slat 20.

  In such a case, as shown in FIG. 9, the first receiver 38 is rotated with respect to the second receiver 40, and the contacted surface 38 c of the first receiver 38 and the second receiver 40 are The rotation range of the rotating body 36 can be changed by changing the angle formed with the contacted surface 40c. Even in this case, since one of the engaging portions 36b is engaged with the engaged portion 38a in a rotation angle state rotated 45 degrees from the horizontal state, a click feeling can be generated, and the slat 20 can be reliably secured in this angle state. Can be stopped. Moreover, this engaging force can also be used as a restraining force that maintains the slat 20 in each determined rotational angle state.

  The angle adjustment of the first receiver 38 with respect to the second receiver 40 can be performed by changing the fixing position of the first receiver 38 with respect to the case 32 as shown in FIG. FIG. 10A shows a state in which the illustration of the case 32 is omitted, and a plurality of attachment holes 38 d are formed in the end surface of the first receiver 38. In the illustrated example, in order to enable a fine adjustment angle, a plurality of mounting holes 38d are formed on two rows of concentric circles, and the end surface of the case 32 corresponds to the two rows of mounting holes 38d. Two rows of mounting holes 32a are formed. The first receiving body 38 is fixed to the case 32 by aligning the mounting holes 32a of any of the two rows of mounting holes 32a with any of the mounting holes 38d of the multiple mounting holes with the mounting screws 44. be able to.

  Further, in order to make the adjustment angle easy to understand, an angle display portion 38e for displaying the angle along the periphery of the first receiver 38 is provided, and an indicator 32b is provided on the end surface of the case 32. The operator can adjust the angle by visually recognizing the relationship between the angle display part 38e of the first receiver 38 exposed from the case 32 and the indicator 32b.

  FIG. 11 is a view of a main part showing another embodiment of the present invention that can simplify the position adjustment of the first receiver 38. For the sake of easy understanding, FIG. The second receiver 40 is mainly shown. A worm wheel portion 38 f is formed on the outer peripheral surface of the protruding portion 38 b of the first receiver 38, and a worm 46 that meshes with the worm wheel portion 38 d is pivotally supported in the case 32. A part of the worm 46 can be driven through the opening 12a drilled in the head box 12, and the worm 46 is rotated from the outside by using a tool, whereby the first receiver 38 with respect to the second receiver 40 is rotated. The angle can be adjusted.

  FIG. 12 is a view of a main part showing still another embodiment of the present invention in which the position adjustment of the first receiver 38 can be simplified. For the sake of easy understanding, FIG. The second receiver 40 is mainly shown. A gear 38 g is formed on the outer peripheral surface of the protruding portion 38 b of the first receiver 38, and an adjustment dial 48 that meshes with the gear 38 g is supported in the case 32. A part of the adjustment dial 48 can be driven through an opening 12a formed in the head box 12. By rotating the adjustment dial 48 from the outside, the angle of the first receiver 38 with respect to the second receiver 40 can be adjusted. It can be adjusted.

  In the above embodiment, the allowable rotation range of the slat 20 is approximately 90 degrees or less, and there is one place where a click feeling is generated in the middle of the rotation range, but the allowable rotation range is 90 degrees or more. Of course, it is also possible. When the rotation range is wide, the rotation angle at which the slat 20 is desired to be stopped in the middle of the rotation range can be two or more.

  FIGS. 13 to 16 are examples of the slat rotation control mechanism 30 when the rotation range becomes approximately 180 degrees, and the central angle of the protrusion 36a of the rotating body 36 is approximately 180 degrees. Three engaging portions 36b are formed on the end faces facing in the axial direction at an angle of 45 degrees in the circumferential direction.

  Further, an engaged portion 50a is formed on an end surface orthogonal to the axial direction of the non-rotating body 50 fixed to the case 32, and toward the rotating body 36 at a position spaced 180 degrees from the engaged portion 50a. A protruding portion 50b that protrudes is formed, and both end surfaces orthogonal to the circumferential direction of the protruding portion 50b are contacted surfaces 50c and 50c. Further, the second receiver 40 is not provided.

  In the blind provided with the slat rotation control mechanism 30 configured as described above, the rotation range of the slat 20 is a substantially vertical state in which the slat 20 rotates from the horizontal state to the back side and is fully closed. Approximately 90 degrees until the slat 20 is rotated from the horizontal state of the slat 20 to the front side and approximately 90 degrees until the slat 20 is in the fully closed state, which is a fully closed state, and is approximately 180 degrees. The slat 20 can be stopped at a horizontal state of the rotation range and at an angle of 45 degrees between the back side and the near side. Therefore, as shown in FIG. 16A, when the slat 20 is in a horizontal state, the engaging portion 36 b at the center of the rotating body 36 is engaged with the engaged portion 50 a of the non-rotating body 50. Then, when the operating rod 24 is operated to rotate the rotary shaft 14 to the back side or the near side, the engagement between the engaging portion 36b and the engaged portion 50a is released, and the elastic force of the spring 42 is reduced. On the contrary, the rotating body 36 is slightly separated from the non-rotating body 50 and rotates in the same direction. Then, as shown in FIG. 16 (b-1) or 16 (b-2), when rotated by 45 degrees, another engaging portion 36b of the rotating body 36 is engaged with the engaged portion 50a. Since the engagement is transmitted as a click feeling to the operating rod 24 via the rotating shaft 14, the operator can recognize that the 45-degree rotating position has been reached and can stop the operation. When the operation is stopped at this position, the slat 20 can be stopped in a state rotated by 45 degrees. Thus, the slat 20 can be stopped at a predetermined angle.

When the operating rod 24 is further operated, the rotating shaft 14 further rotates, and with the rotation of the rotating shaft 14, the engagement between the engaging portion 36b of the rotating body 36 and the engaged portion 50a is released, and the elasticity of the spring 42 is reached. The rotating body 36 rotates in the same direction with a slight separation from the non-rotating body 50 against the force. Then, when the slat 20 is in a substantially vertical state, one contact surface 36c of the rotating body 36 becomes one covered surface of the non-rotating body 50 as shown in FIG. 16 (c-1) or 16 (c-2). Since it abuts against the abutment surface 50c, further rotation of the slat 20 is prevented. When the operating rod 24 is operated in the opposite direction from FIG. 16 (c-1) or FIG. 16 (c-2), the rotating shaft 14 rotates in the opposite direction and moves in the opposite direction, but the slat 20 is in the horizontal state. Then, the center engaging portion 36 b can be engaged with the engaged portion 50 a of the non-rotating body 50, and a click feeling can be transmitted to the operation rod 24.
Thus, this embodiment can provide the same operations and effects as the previous embodiment.

  In the above embodiment, only one portion to be engaged 50a is formed, but another portion to be engaged is provided at 90 degrees in the clockwise and counterclockwise directions in the circumferential direction from the engaged portion 50a. Can be formed. In that case, even when the slat is in a substantially vertical state, the engaging portion 36b can be engaged with another engaged portion to transmit a click feeling to the operation rod.

1 is an overall front view of a blind according to an embodiment of the present invention. It is a perspective view of the slat rotation control mechanism provided in the blind of FIG. It is a disassembled perspective view of the main components of the slat rotation control mechanism of FIG. (A)-(d) is a perspective view showing the effect | action of a slat rotation control mechanism, (a) is the horizontal state of a slat, (b) is the state rotated from the horizontal state, (c) is the state rotated 45 degree | times. , (D) corresponds to a substantially vertical state. (A)-(d) is a top view showing the effect | action of a slat rotation control mechanism, (a) is the horizontal state of a slat, (b) is the state rotated from the horizontal state, (c) is the state rotated 45 degree | times. , (D) corresponds to a substantially vertical state. (A)-(c) is sectional drawing seen along the 6-6 line of FIG. 5 (a) showing the effect | action of a slat rotation control mechanism, (a) is the horizontal state of a slat, (b) is 45. (C) corresponds to a substantially vertical state. (A)-(c) is a side view of a blind, (a) is a horizontal state of a slat, (b) is the state rotated 45 degree | times, (c) respond | corresponds to a substantially vertical state. (A)-(c) is a side view of the blind attached inclined, (a) corresponds to the horizontal state of a slat, (b) rotated 45 degrees, (c) corresponds to a substantially vertical state. . FIG. 9 is a cross-sectional view illustrating the operation of the slat rotation control mechanism of FIG. 8, where (a) corresponds to a horizontal state of the slat, (b) corresponds to a state rotated by 45 degrees, and (c) corresponds to a substantially vertical state. It is a figure showing position adjustment of the 1st receiving body and the 2nd receiving body, (a) is a side view which omitted illustration of a case, and (b) and (c) are side views including a case. It is a figure of the principal part showing other embodiment of this invention which adjusts the position of a 1st receiver. It is a figure of the principal part showing other embodiment of this invention which adjusts the position of a 1st receiver. It is a disassembled perspective view of the main components of the slat rotation control mechanism when the rotation range of the slat is about 180 degrees. It is a perspective view of a slat rotation control mechanism when the rotation range of the slat is about 180 degrees. It is a top view of the slat rotation control mechanism when the rotation range of the slat is about 180 degrees. It is sectional drawing seen along the 16-16 line of FIG. 15 showing the effect | action of the slat rotation control mechanism when the rotation range of a slat is about 180 degree | times, (a) is a horizontal state of a slat, (b-1 ) And (b-2) correspond to a state rotated by 45 degrees, and (c-1) and (c-2) correspond to a substantially vertical state.

Explanation of symbols

10 Blind 12 Head box 14 Rotating shaft 18 Ladder cord 20 Slat 24 Operation rod (operation unit)
36 Rotating body 36b Engaging portion 36c Abutting surface 38 First receiving body (non-rotating body)
38a engaged portion 38c contacted surface 40 second receiver (non-rotating body)
40a engaged portion 40c contacted surface 42 spring (elastic body)
50 Non-rotating body 50a Engagement part 50c Contact surface

Claims (7)

A head box (12), a rotating shaft (14) rotatably supported in the head box (12), and a ladder cord (18) coupled to the rotating shaft (14) are supported by the rotating shaft. In a blind including a slat (20) that performs a rotation operation in conjunction with rotation, and an operation unit (24) that rotationally drives the rotation shaft (14),
A rotating body (36) that can rotate integrally with the rotating shaft (14), and has an engaging portion (36b) and a contact surface (36c) orthogonal to the circumferential direction;
An engaged surface (38a, 40a, 50a) that is disposed so as to be non-rotatable and engageable with the engaging portion (36b) and an abutted surface (38c) that can contact the abutting surface (36c). Non-rotating bodies (38, 40, 50) having 38c, 40c, 50c),
When the engaging portion (36b) and the engaged portion (38a, 40a, 50a) are engaged, the operating portion (24) has a click feeling at a predetermined rotation angle of the slat. A blind that is capable of transmitting and restricting rotation of the slats beyond a predetermined rotation angle by the contact surface (36c) contacting the contacted surface (38c, 40c, 50c).   The non-rotating body (38, 40) has one or more engaged parts (38a, 40a), and the position of at least a part of the engaged parts (38a) is the rotational axis (14). The blind according to claim 1, wherein the position of the blind is adjustable.   The abutting surfaces (36c) of the rotating body (36) are a pair of circumferentially spaced abutting surfaces, and the non-rotating body can be contacted with one abutting surface. A first receiver (38) having a contact surface and a second receiver (40) that can come into contact with the other contact surface, the first receiver (38) and the second receiver (40). The relative position of the contacted surface (38c) of the first receiver (38) and the contacted surface (40c) of the second receiver (40) can be adjusted in the circumferential direction. The blind according to claim 1 or 2, characterized in that the distance can be adjusted. A head box (12), a rotating shaft (14) rotatably supported in the head box (12), and a ladder cord (18) coupled to the rotating shaft (14) are supported by the rotating shaft. In a blind including a slat (20) that performs a rotation operation in conjunction with rotation, and an operation unit (24) that rotationally drives the rotation shaft (14),
A rotating body (36) which can rotate integrally with the rotating shaft (14) and has an engaging portion (36b);
A non-rotating body (38, 40) that is non-rotatably provided and has engaged portions (38a, 40a) engageable with the engaging portion (36b);
When the engaging portion (36b) and the engaged portion (38a, 40a) are engaged, a click feeling is transmitted to the operating portion (24) at a predetermined rotation angle of the slat. The blind portion is characterized in that the engaged parts (38a, 40a) are provided so as to be adjustable in position.   The rotating body (36) and the non-rotating body (38, 40) are always urged by the elastic body (42) in a direction in which both of the rotating body (36) and the non-rotating body (38, 40) approach each other. The blind according to any one of claims 1 to 4, wherein when the engagement with 40a) is released, both of them separate from each other against the urging force of the elastic body (42).   The engaging portion (36b) of the rotating body (36) and the engaged portions (38a, 40a) of the non-rotating body (38, 40) face each other perpendicular to the axial direction of the rotating shaft (14). The blind according to any one of claims 1 to 5, wherein the blind is formed. A head box (12), a rotating shaft (14) rotatably supported in the head box (12), and a ladder cord (18) coupled to the rotating shaft (14) are supported by the rotating shaft. In a blind including a slat (20) that performs a rotation operation in conjunction with rotation, and an operation unit (24) that rotationally drives the rotation shaft (14),
A rotating body (36) which is rotatable together with the rotating shaft (14) and has a pair of circumferentially spaced contact surfaces (36c, 36c);
A non-rotating body (38, 40) disposed in a non-rotatable manner and having a pair of abutted surfaces (38c, 40c) that can abut against the pair of abutting surfaces (36c, 36c), respectively;
The contact surfaces (36c, 36c) and the contacted surfaces (38c, 40c) are in contact with each other, so that the rotation of the slat (20) beyond a predetermined rotation angle can be regulated. The blind in which the distance in the circumferential direction of the abutted surfaces (38c, 40c) is adjustable.

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