TW201350665A - Insolation shielding device - Google Patents

Abstract

The present invention relates to an insolation shielding device, which reliably constrains the rotation of a rotary shaft and achieves an excellent long-term positioning function. The insolation shielding device comprises: an inlaid body (60) that is rotatable in unison with a rotary shaft (25); a rotary body (70), which is mounted to rotate freely with respect to the rotary shaft (25) and is arranged adjacent to the inlaid body (60), and a casing (80), which has an interior space (S) in which the inlaid body (60) and the rotary body (70) are received. The inlaid body (60) is provided with a first engaging section (64) and the rotary body (70) is provided with a second engaging section (75) and a third engaging section (77). The casing (80) is provided with a fourth engaging section (83). Rotating the rotary shaft (25) causes the inlaid body (60) to rotate relative to the rotary body (70) so as to bring the first engaging section (64) and the second engaging section (75) into abutting engagement with each other. After the abutting engagement, the rotary body (70) is rotated in unison with the inlaid body (60), when the third engaging section (77) and the fourth engaging section (83) are brought into abutting engagement with each other, the rotation of the rotary body (70) in a direction of incurring interference with the fourth engaging section (83) is constrained.

Description

Sunlight shielding device

The invention relates to a solar shading device.

A horizontal louver which is one type of the solar ray shielding device generally has a plurality of blades suspended from the upper beam via a directional control rope, and a mechanism for adjusting the blade angle is usually provided in the horizontal louver. As such a horizontal louver, there are, for example, horizontal louvers disclosed in Patent Document 1 and Patent Document 2.

In the horizontal blind disclosed in Patent Document 1, the rotation of the rotating shaft to which the sleeve is attached is restricted by abutting the projection provided on the sleeve against the ball. However, since the ball is housed in the ball housing portion and the ball can move in the ball housing portion, the rotating shaft can be rotated by 360 degrees or more.

Further, in the horizontal louver disclosed in Patent Document 2, the extension of the rotating body attached to the rotating shaft is located in the circular opening of the casing, and the uneven portion is provided in the circular opening. A thin portion is provided on the extension, and a protrusion is provided on the thin portion, the protrusion being located in the uneven portion. According to this configuration, the projection is rotated by the interference of the convex portion of the uneven portion, whereby the rotating body receives the resistance at a predetermined angle, and this is transmitted to the operator as an impact feeling via the operating lever.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1]: Japanese Gazette, New Registration No. 2560464

[Patent Document 2]: Japanese Gazette, Patent No. 3805626

However, in the structure disclosed in Patent Document 1, in order to make the protrusion unobstructed to rotate in the circular hollow portion, it is necessary to provide a minute gap between the inner wall surface of the circular hollow portion and the protrusion, but when the gap is formed When it is too large, the ball will fall out of the ball accommodating portion and enter the gap, so that, for example, the ball may be caught. Further, it is necessary to arrange the ball so as to be rotatable between the inner wall surface of the ball housing portion and the outer peripheral surface of the root-side extension portion of the protrusion. In this case, when the gap between the protrusion and the ball housing portion is excessively large, protrusion may occur. The front end abuts on the ball, etc., causing the ball to get stuck.

In particular, the projection is in contact with a portion of the ball that is close to the rotation axis (near the rotation center), and the end portion of the ball accommodation portion abuts on a portion of the ball that is away from the rotation axis side (away from the rotation center side). Thereby, the projection and the portion where the end portion of the ball accommodating portion abuts on the ball are different in the radial direction, so that the ball is easily caught by a slight gap difference.

Further, in the structure disclosed in Patent Document 2, there is a problem that the thin-walled portion is deteriorated during long-term use, and the impact feeling by the thin-walled portion is weakened. Therefore, the desired impact feeling cannot be obtained, and there is a problem that the positioning function is lowered.

The present invention has been completed based on the above circumstances, and its purpose is to Provided is an insolation shielding device that can achieve at least one of the effects of reliably controlling the rotation of the rotating shaft and the good positioning function for a long period of time.

In order to solve the above problems, a solar radiation shielding apparatus according to a first aspect of the present invention includes: a rotating shaft that is rotatable under operation of an operating member; and a fitting body that is integrally formed with the rotating shaft a rotating state is mounted on the rotating shaft; a rotating body mounted to be rotatable with respect to the rotating shaft and configured to be adjacent to the fitting; and a housing having an inner space and housing the inner space a first engaging portion is disposed on the rotating body, a second engaging portion and a third engaging portion are disposed on the rotating body, and a fourth engaging portion is disposed on the housing; the sunshade is shielded The apparatus is configured such that when the fitting body is relatively rotated with respect to the rotating body by the rotation of the rotating shaft, the first engaging portion can abut against the second engaging portion, and the first engaging portion and the second engaging portion After the contact, the rotating body rotates together with the fitting body, and when the third engaging portion abuts against the fourth engaging portion, the rotation of the rotating body in a direction in which the fourth engaging portion interferes is restricted.

Further, in another aspect of the invention, it is preferable that the fitting body is provided with a sliding portion, the convex portion and the concave portion are provided on the sliding portion, and the convex portion is provided from the rotating shaft than the concave portion. The center of rotation protrudes toward the radially outer side.

Further, in another aspect of the invention, in the invention described above, preferably, the sliding member is in contact with the sliding portion in a state in which the biasing member applies a biasing force.

Further, in another aspect of the invention, in the above invention, preferably, the convex portion is provided with at least one pair, and when the rotating body rotates together with the fitting body, the third card is formed after the sliding member passes over the convex portion to generate an impact feeling. Joint and fourth The engaging portion abuts, thereby restricting the rotational position of the rotating shaft.

Furthermore, in another aspect of the invention, it is preferable that the plurality of blades are supported via the rope member, wherein the plurality of blades are capable of changing directions in accordance with the rotation of the rotating shaft; the recessed portion is provided along at least the circumferential direction of the fitting body. There are three; the three recesses include: a recess in which the sliding member is located when the blade is in the fully open position, a recess in which the sliding member is located when the blade is in the first fully closed position, and a position in which the sliding member is located when the blade is in the second fully closed position a recess, wherein the second fully closed position is a position opposite to the first fully closed position.

According to another aspect of the invention, in the invention of the invention, preferably, the sliding member is housed in the casing, and the sliding member slides along the sliding portion while the rotation of the fitting body slides along the radial direction of the fitting body in the casing. mobile.

Further, in another aspect of the invention, in the above invention, preferably, the fitting body is provided with an arcuate projection corresponding to the first engaging portion; and the housing is provided with a restricting projection corresponding to the fourth engaging portion. a first convex portion that is in contact with the arcuate protrusion and that corresponds to the second engaging portion, and is provided on the rotating body to abut against the restricting protrusion and corresponds to the third engaging portion. The second convex part of the part.

Further, a solar radiation shielding apparatus according to a second aspect of the present invention includes: a rotating shaft that is rotatable under operation of an operating member; and a fitting body that is integrally rotated with the rotating shaft Mounted on the rotating shaft; and a housing having an internal space and receiving a fitting body in the internal space; a first engaging portion is provided on the fitting body, and a housing side engaging is provided on the housing The solar radiation shielding device is configured to: When the fitting body is relatively rotated with respect to the casing by the rotation of the rotating shaft, the first engaging portion can abut against the casing-side engaging portion, and the first engaging portion can abut the casing-side engaging portion. Therefore, rotation of the rotating shaft in a direction in which the first engaging portion interferes with the housing-side engaging portion is restricted; a sliding portion is provided on the fitting body, and the convex portion and the concave portion are provided on the sliding portion, and the convex portion is convex The portion is provided to protrude outward from the center of rotation of the rotating shaft than the recessed portion, and the sliding member abuts against the sliding portion in a state where the biasing member applies a biasing force.

According to the solar radiation shielding apparatus of the present invention, the rotation of the rotating shaft can be reliably restricted. In addition, it is possible to perform a good positioning function for a long time.

10‧‧‧Horizontal blinds (corresponding to solar shading devices)

20‧‧‧上梁

21‧‧‧Restriction device

22‧‧‧Support roller

23‧‧‧Support parts

24‧‧‧ frame

25‧‧‧Rotary axis

26‧‧‧ Gearbox

30‧‧‧ leaves

31‧‧‧ Fixing frame

32‧‧‧Lower beam

40‧‧‧Operation lever (corresponding to operating parts)

41‧‧‧balancer

50, 50A‧‧‧ impact unit

60, 60A‧‧‧ impact roller (corresponding to the chimera)

61, 61A‧‧‧ clutch ball sliding part (corresponding to the sliding part)

61a, 61a1, 61a2‧‧‧ minimum diameter (corresponding to the recess)

61b‧‧‧ convex

62, 72‧‧‧Flange

63‧‧‧Cylinder

63a‧‧‧ recess

64‧‧‧arc protrusion (corresponding to the first engagement part)

65‧‧‧ inserted through hole

65a‧‧‧ fitting holes

65b‧‧‧ round hole

70‧‧‧Transmitted shaft (corresponding to the rotating body)

70B‧‧‧Intermediate transmission shaft

71‧‧‧Cylinder

71a, 71b‧‧‧ split cylinder

72‧‧‧Flange

73‧‧‧Roller engagement

74‧‧‧Shell engagement

75, 75a, 75b‧‧‧ roller side protrusions (corresponding to the second engaging portion and the first convex portion)

76‧‧‧Surround slip fit

77, 77a, 77b‧‧‧ abutment projections (corresponding to the third engagement portion and the second convex portion)

78‧‧‧Protruding

80‧‧‧ Lower housing (corresponding to a part of the housing)

81, 91‧‧‧ Division space

82‧‧‧Flange recess

83‧‧‧Restriction protrusion (corresponding to the fourth engagement part and the housing side engagement part)

84‧‧‧ concave cavity

85‧‧‧ hook

90‧‧‧ upper housing (corresponding to a part of the housing)

92‧‧‧Flange recess

100‧‧‧Compression spring (corresponding to the force-applying part)

110‧‧‧Clutch ball (corresponding to sliding parts)

A1, A2‧‧‧ openings

R1‧‧‧ direction control rope (corresponding to rope parts)

R2‧‧‧ lifting rope

S‧‧‧Internal space

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view showing the structure of a horizontal blind according to various embodiments of the present invention.

Fig. 2 is a plan view showing the structure of a horizontal blind according to each embodiment.

Fig. 3 is a side view showing the structure of a horizontal blind according to each embodiment.

Fig. 4 is an exploded perspective view showing the structure of an impact unit of the horizontal blind according to the first embodiment.

Fig. 5 is a perspective view showing the structure of an impact unit of the horizontal blind according to the first embodiment.

6 is a view showing an impact unit of the horizontal blind according to the first embodiment; Front cross-sectional view of the structure.

Fig. 7 is a side cross-sectional view showing the structure of an impact unit of the horizontal blind according to the first embodiment.

Fig. 8 is a perspective view showing the structure of an impact roller of the horizontal blind according to the first embodiment.

Fig. 9 is a perspective view showing the structure of a transmission shaft of the horizontal blind according to the first embodiment.

Fig. 10 is a perspective view showing the structure of a lower casing of the horizontal blind according to the first embodiment.

Fig. 11 is a schematic side cross-sectional view showing the positional relationship between the arcuate projection, the transmission shaft, and the lower casing (restricting projection) of the striking unit in the first embodiment.

Fig. 12 is an exploded perspective view showing the structure of the striking unit of the horizontal blind according to the second embodiment.

Figure 13 is a perspective view showing the structure of the impact roller of the horizontal blind according to the second embodiment.

Fig. 14 is a perspective view showing the structure of a transmission shaft (intermediate transmission shaft) of a horizontal blind according to a modification.

(First Embodiment)

Hereinafter, a horizontal blind 10 as a solar radiation shielding apparatus according to a first embodiment of the present invention will be described with reference to the drawings. In addition, in the following In the description, the XYZ rectangular coordinate system may be used for explanation, and the longitudinal direction of the horizontal louver 10 is set to the X direction, and the right end side of FIG. 1 is set to the X1 side, and the left end side of FIG. 1 is set to X2. side. Moreover, the vertical direction (up-and-down direction) of the horizontal louver is set to the Z direction, and the upper side is set to the Z1 side, and the lower side is set to the Z2 side. Further, the direction perpendicular to the X direction and the Z direction is referred to as the Y direction, and the indoor side where the operation lever 40 is located is set to the Y1 side, and the opposite side is set to the Y2 side.

<About the structure of the horizontal blinds 10>

As shown in FIGS. 1 to 3, in the horizontal louver 10, a plurality of blades 30 are suspended from the head box 20 by a plurality of rudder cords R1 at predetermined intervals. Further, a fixing frame 31 is attached to the lower end side (Z2 side) of the direction control string R1, and the direction control string R1 is attached to the bottom rail 32 via the fixing frame 31. In addition, the direction control string R1 corresponds to the rope member.

The lower end side (Z2 side) of the lift cord R2 is fixed to the lower beam 32. The lift cord R2 is inserted into an insertion hole (not shown) provided in each of the blades 30, and is inserted into the inside of the upper beam 20 and the inside of the operation lever 40, and is attached to the balancer 41. Thereby, the raising/lowering rope R2 and the up-and-down movement of the balancer 41 are interlocked, and the accommodation state in which the several blades 30 are laminated|stacked, and the expanded state which arrange|positions the several blade|

In addition, the lifting rope R2 passes through the restriction device 21 in the upper beam 20. The restriction device 21 is switchable between a restriction state in which the lift cord R2 is prevented from moving in a direction in which the blade 30 is lowered downward, and a release state in which the lift cord R2 is allowed to move in a direction in which the blade 30 is lowered downward.

As shown in FIGS. 1 and 2, the upper end side (Z1 side) of the direction control rope R1 is attached to the support roller 22 provided in the upper beam 20. The support roller 22 is rotatably attached to the frame body 24 of the upper beam 20 via the support member 23. A fitting hole (not shown) is provided at a position on the radial center side of the support roller 22, and the rotary shaft 25 is inserted into the fitting hole, whereby the support roller 22 and the rotary shaft 25 are integrally rotated.

The outer peripheral shape of the rotating shaft 25 is, for example, hexagonal, and the fitting hole is also provided in a hexagonal hole shape. Thereby, the support roller 22 and the rotary shaft 25 are integrally rotated.

A gear case 26 is provided on one end side (X1 side in the longitudinal direction in Fig. 1) of the rotary shaft 25. A gear (not shown) such as a worm wheel is provided in the gear case 26, and the worm wheel is directly or indirectly connected to the rotating shaft 25. Further, the gear case 26 is provided with, for example, a worm (not shown) that meshes with the worm wheel, and the worm is directly or indirectly connected to the operating lever 40 (corresponding to the operating member). Thus, when the operating lever 40 is rotated, its rotational force is transmitted to the rotating shaft 25 via the worm and the worm wheel, and is further transmitted to the supporting roller 22.

<About the click unit 50>

The striking unit 50 shown in FIGS. 4 to 7 is provided on the other end side of the rotating shaft 25 (the X2 side in the longitudinal direction in FIGS. 1 and 2). As shown in FIGS. 4, 6, and 7, the impact unit 50 is provided with a strike drum 60, a driven shaft 70, a lower casing 80, an upper casing 90, a compression spring 100, and a clutch ball 110. .

The impact roller 60 shown in FIG. 4, FIG. 6 to FIG. 8 is mounted on the above-mentioned rotating shaft 25, and the impact roller 60 is utilized when the rotating shaft 25 is rotated. The combiner ball 110 and the compression spring 100 impart a feeling of impact. Further, the impact roller 60 is also a member that transmits rotation to the transmission shaft 70 and limits the rotation range of the rotation shaft 25 via the transmission shaft 70.

The impact roller 60 corresponds to the chimera. The impact roller 60 is provided with a clutch ball sliding portion 61, a flange portion 62, a cylindrical portion 63, and an arcuate projection portion 64. Among them, the clutch ball sliding portion 61 has an outer peripheral surface on which the clutch ball 110 slides. The clutch ball sliding portion 61 corresponds to a sliding portion.

As shown in FIG. 8, the outer peripheral surface of the clutch ball sliding portion 61 is provided in a concavo-convex shape having a different radius from the center of rotation of the impact roller 60. That is, the clutch ball sliding portion 61 has the smallest diameter portion 61a having the smallest radius, and when the clutch ball 110 advances in the circumferential direction from the minimum diameter portion 61a, the clutch ball 110 moves to the convex portion 61b, and the radius of the convex portion 61b is the smallest The diameter portion 61a gradually increases in the circumferential direction up to the outer circumferential surface of the clutch ball sliding portion 61.

However, it is also possible to provide the clutch ball sliding portion 61 with the convex portion 61b having a radius larger than a certain reference radius and the concave portion having a radius smaller than the reference radius, instead of the minimum diameter portion 61a and the convex portion 61b as described above. Further, the clutch ball sliding portion 61 may be formed by forming a concave portion so as to be recessed from a cylindrical outer peripheral surface. Further, the minimum diameter portion 61a may correspond to the concave portion.

As shown in FIGS. 7 and 8, the minimum diameter portion 61a and the convex portion 61b are provided at a predetermined interval in the circumferential direction. Thereby, the rotation of the rotating shaft 25 can be positioned at a predetermined angle. In the configuration shown in Figs. 7 and 8, eight of the minimum diameter portion 61a and the convex portion 61b are provided, so that the rotation of the rotary shaft 25 can be positioned every 45 degrees.

A flange portion 62 is provided on the impact roller 60 so as to be adjacent to the clutch ball sliding portion 61. The radius of the outer peripheral surface of the flange portion 62 is larger than the maximum diameter portion of the convex portion 61b of the clutch ball sliding portion 61. Thereby, the flange portion 62 separates the internal space S formed when the lower casing 80 and the upper casing 90 are assembled, and transmits the flange portion 62 to the flange recesses 82 and 92 which will be described later, thereby determining the impact roller. The position of 60 relative to the lower housing 80 and the upper housing 90. Further, by positioning the flange portion 62 in the flange recesses 82, 92, the flange portion 62 also functions as a bearing that strikes the drum 60.

Further, the outer peripheral surface of the flange portion 62 may have a radius smaller than the maximum diameter portion of the convex portion 61b.

As shown in FIG. 8, a cylindrical portion 63 is further provided on the impact roller 60. The cylindrical portion 63 is adjacent to the clutch ball sliding portion 61, but its abutting position is on the opposite side of the flange portion 62. The cylindrical portion 63 is a portion of the impact roller 60 that is provided in a cylindrical shape, and has an outer peripheral surface having a radius slightly smaller than the minimum diameter portion 61a. A part of the cylindrical portion 63 protrudes outward from the opening portion A1 (see FIG. 6) of the lower casing 80 and the upper casing 90. Further, a part of the cylindrical portion 63 is in contact with the inner wall surface of the opening portion A1, whereby the cylindrical portion 63 also functions as a bearing that strikes the drum 60.

However, the cylindrical portion 63 may have an outer peripheral surface having a radius equal to or smaller than the minimum diameter portion 61a.

A positioning recess 63a as shown in Fig. 8 is provided on the cylindrical portion 63. The positioning recess 63a is a portion formed by cutting the cylindrical portion 63 in a triangular shape. By arranging the positioning recess 63a, the position of the impact roller 60 in the circumferential direction can be confirmed when the impact roller 60 is assembled.

As shown in FIGS. 6 and 8, an arcuate projection 64 corresponding to the first engaging portion is provided on the flange portion 62. The arcuate projection 64 is provided to protrude from a surface of the flange portion 62 opposite to the clutch ball sliding portion 61. The arcuate projection 64 is a portion that is in contact with the roller-side convex portion 75 of the transmission shaft 70. The abutment of the abutment and other portions is used to limit the range of rotation of the impact roller 60 and the rotating shaft 25.

The arcuate projections 64 are provided in a block shape of a predetermined thickness in a predetermined angular range in the circumferential direction of the impact roller 60, whereby the arcuate projections 64 are provided in an arc shape. However, in addition to the arc shape, the arcuate projection portion 64 may have two or more configurations such as one end and the other end defining a predetermined angle, and other shapes such as a pin shape may be employed. Further, the arcuate projections 64 are disposed in an angular range of less than 90 degrees (refer to FIG. 11). Specifically, the arcuate projections 64 are provided in an angular range in which the impacting roller 60 can be rotated by approximately 360 degrees (including 360 degrees) after the arcuate projections 64 abut against the roller-side projections 75 to be described later. ) The range of angles. However, the arcuate projections 64 may be provided in an angular range other than the above angular range.

Further, the impact roller 60 is provided with an insertion hole 65 through which the rotary shaft 25 is inserted, and a fitting hole 65a is provided on the back side (X1 side) of the insertion hole 65 (see FIGS. 6 and 7). The fitting hole 65a is provided in a shape corresponding to the outer peripheral shape of the rotating shaft 25. In the present embodiment, since the outer peripheral shape of the rotating shaft 25 is set to a hexagonal shape (see FIGS. 4 and 5), the fitting hole 65a is also provided in a hexagonal hole shape (refer to FIG. 7). Thereby, the impact roller 60 rotates together with the rotating shaft 25 in a state where it does not rotate relative to the rotating shaft 25. Further, the portion of the insertion hole 65 on the side of the cylindrical portion 63 (X2 side) is A circular hole 65b having a circular hole shape.

As shown in FIG. 4, the transmitted shaft 70 is also inserted by the rotating shaft 25 in the same manner as the impact roller 60, and the transmitted shaft 70 is disposed on the rotating shaft 25 with the flange portion 62 side of the impact roller 60 ( X1 side) abuts. In addition, the transmitted shaft 70 corresponds to a rotating body.

As shown in FIG. 9, the to-be-transferred shaft 70 has the cylindrical cylindrical part 71. Further, the transmission shaft 70 is provided with a flange portion 72, a drum engagement portion 73, and a housing engagement portion 74. The flange portion 72 is provided on a halfway portion of the outer peripheral surface of the cylindrical portion 71 in the axial direction (X direction) of the transmission shaft 70. The flange portion 72 has a function of determining a position of the transmission shaft 70 in the axial direction (X direction) in the internal space S formed by the lower casing 80 and the upper casing 90, and is transmitted through the internal space S. The inner wall surface abuts, and the flange portion 72 also functions as a bearing to be transmitted to the shaft 70.

As shown in FIGS. 4 and 9, the flange portion 72 is provided at a position closer to the impact roller 60 side (X2 side) than the central position of the cylindrical portion 71 in the axial direction (X direction).

A drum engagement portion 73 is provided at a position of the transmission shaft 70 that is closer to the impact roller 60 side (X2 side) than the flange portion 72. The drum engaging portion 73 includes a portion of the cylindrical portion 71 that is closer to the impact roller 60 than the flange portion 72 (divided cylindrical portion 71a) and a roller-side convex portion 75 that protrudes radially outward from the divided cylindrical portion 71a. .

As shown in Fig. 9, in the present embodiment, two roller side convex portions 75 are provided, and the interval between the two roller side convex portions 75 is set to an interval of the convex portion 75 on the drum side and the arc shape After the protrusion 64 abuts, the collision can be made The strike roller 60 is rotated by an interval of approximately 360 degrees (including 360 degrees). In Fig. 9, a case of approximately 90 degrees is illustrated as such an interval. However, the interval between the roller-side convex portions 75 may be other intervals than the above-described intervals. Further, the drum side convex portion 75 corresponds to the second engaging portion and the first convex portion.

The two roller side convex portions 75 are portions that abut against the arcuate projections 64, respectively. The driven shaft 70 is rotated relative to the lower casing 80 and the upper casing 90 by the roller side convex portion 75 abutting against the arcuate projection portion 64. Further, the arcuate projection portion 64 is located on the outer peripheral side of the divided cylindrical portion 71a and has a wide interval between the two roller-side convex portions 75 (outer circumferential sliding engagement portion 76). Therefore, the impact roller 60 can relatively rotate with respect to the to-be-transferred shaft 70 in the period before the arc-shaped protrusion part 64 abuts on the outer side slip-fit part 76 and the roller side convex part 75.

Further, as shown in FIG. 9, a housing engagement portion 74 is provided at a position on the opposite side (X1 side) of the transmission shaft 70 that sandwiches the flange portion 72 and the impact roller 60. The housing engaging portion 74 includes a portion of the cylindrical portion 71 that extends from the flange portion 72 toward the opposite side (X1 side) of the impact roller 60 (divided cylindrical portion 71b) and radially outward from the divided cylindrical portion 71b. A protruding abutment protrusion 77. In addition, the abutting convex portion 77 corresponds to the third engaging portion and the second convex portion.

The abutting convex portion 77 is provided so as to extend from the flange portion 72 to the middle portion of the outer peripheral surface of the divided cylindrical portion 71b with the flange portion 72 as a starting point. Further, the portion of the divided cylindrical portion 71b from the front end portion of the abutting convex portion 77 to the end portion (the end portion on the X1 side) of the divided cylindrical portion 71b and the opening of the lower casing 80 and the upper casing 90 are provided. The inner wall surface of the portion A2 (see FIG. 6) is in contact with each other, whereby the divided cylindrical portion 71b also has the transfer shaft 70 together with the flange portion 72. The function of the bearing.

Further, as shown in FIG. 9, in the present embodiment, the abutting convex portion 77 is disposed so as to be on the same straight line as the roller side convex portion 75 with the flange portion 72 interposed therebetween. Therefore, the interval between the two abutting convex portions 77 is the same as the interval between the roller-side convex portions 75, and detailed description thereof will be omitted.

Next, the lower casing 80 will be described. As shown in FIGS. 1 and 2, the lower casing 80 is attached to the upper casing 90 at a position on one end side (X2 side in FIGS. 1 and 2) together with the upper casing 90. The lower housing 80 corresponds to a portion of the housing and together with the upper housing 90 constitutes a housing. Further, the lower casing 80 forms an internal space S together with the upper casing 90, and the rotating shaft 25 is inserted through the openings A1 and A2 (see FIG. 6) at both ends of the internal space S in the X direction. The impact roller 60 and the driven shaft 70 are disposed in the internal space S, and the impact roller 60 and the driven shaft 70 are disposed on the outer peripheral side of the rotating shaft 25. Further, a part of the cylindrical portion 63 protrudes from the opening A1 on the one end side.

A substantially half space (divided space 81) of the internal space S is provided in the lower casing 80, and the wall portions on the opening portions A1 and A2 sides of the divided space 81 are provided so as to reduce the opening diameter compared to the divided space 81. The other portions project radially inward, whereby the cylindrical portion 63 and the divided cylindrical portion 71b are axially supported by the inner wall faces of the openings A1, A2. Further, a flange recess 82 into which the flange portion 62 is fitted is provided in the divided space 81. The position of the impact roller 60 in the X direction is determined by fitting the flange portion 62 into the flange recess 82.

In addition, in the space separating the space 81 away from the impact roller 60 One side (X1 side) is provided with a restricting protrusion 83 corresponding to the fourth engaging portion and the housing-side engaging portion. The restricting projection portion 83 is a portion that abuts against the abutting convex portion 77 to restrict the rotation of the transmission shaft 70. Further, by restricting the rotation of the transmitted shaft 70, the rotation of the impact roller 60 can be restricted. The restricting projections 83 are provided in an arc shape similarly to the arcuate projections 64, and are provided in an angular range in which the impact roller 60 can be rotated by approximately 360 degrees (including 360 degrees) via the transmission shaft 70. Moreover, in the structure shown in FIG. 10, the inner peripheral surface of the restriction protrusion 83 is integrally provided with the inner wall surface of the opening part A2.

As shown in FIG. 10, a pocket portion 84 is provided in the divided space 81 so as to communicate with the divided space 81. The cavity portion 84 is provided in a shape that is circularly recessed from the divided space 81 toward the Z2 side, and is a portion that houses the compression spring 100 and the clutch ball 110. The lower end of the compression spring 100 abuts on the bottom side (Z2 side) of the cavity portion 84, and on the other hand, the clutch ball 110 is disposed on the upper end side (Z1 side) of the compression spring 100. Thereby, the biasing force of the clutch ball 110 toward the upper side (the clutch ball sliding portion 61 side; Z1 side) is applied to the clutch ball 110 by the compression spring 100.

Further, the compression spring 100 is, for example, a coil spring, but in addition to the coil spring, the compression spring 100 may use other force applying members typified by, for example, a leaf spring, a torsion spring, rubber, or the like. Further, the clutch ball 110 is a spherical member made of a resin. However, for example, other members than the spherical member having a pointed tip end or a roller may be used. In addition, the compression spring 100 corresponds to a biasing member. In addition, the clutch ball 110 corresponds to a sliding member.

As shown in FIGS. 7 and 10, in the Y direction of the lower casing 80 Each of the upper outer walls is provided with a hook 85 through which the upper casing 90 (corresponding to a part of the casing) is attached to the lower casing 80. A space (divided space 91) of approximately half of the internal space S is also provided in the upper casing 90. As shown in FIG. 6, the wall portion on the opening portions A1 and A2 sides of the divided space 91 is provided so as to protrude inward in the radial direction from the other portion of the divided space 91 so as to reduce the opening diameter, thereby utilizing the opening portion A1. The inner wall surface of A2 axially supports the cylindrical portion 63 and the divided cylindrical portion 71b. Further, similarly to the lower casing 80, a flange recess 92 into which the flange portion 62 is fitted is also provided in the divided space 91 of the upper casing 90.

<About action>

Next, the operation of the horizontal blind 10 having the above configuration will be described below.

When the user grasps the operating lever 40 and rotates the operating lever 40, its rotational force is transmitted to the rotating shaft 25 via the worm and the worm wheel, thereby rotating the rotating shaft 25. Since the support roller 22 is mounted on the rotary shaft 25, the rotational force is transmitted to the support roller 22. Therefore, the support roller 22 is rotated by the rotation of the operation lever 40. Further, since the upper end side (Z1 side) of the direction control string R1 is attached to the support roller 22, the angle of the blade 30 is changed according to the direction of rotation and the amount of rotation via the direction control string R1. Further, as shown in FIGS. 11(A) to (E), the angle of the blade 30 can be changed between the fully closed position and the reverse fully closed position.

Further, by rotating the rotating shaft 25 by the operating lever 40, the impact roller 60 is also integrally rotated together with the rotating shaft 25. When the impact roller 60 rotates, the compression spring 100 pairs the clutch via the clutch ball 110 The convex portion 61b of the ball sliding portion 61 exerts a urging force which becomes the rotational resistance of the impact roller 60. Therefore, when the rotational force is not applied to the impact roller 60 from the rotating shaft 25 or the like, the clutch ball 110 is positioned on the clutch ball sliding portion 61 so as to abut against the minimum diameter portion 61a, and is maintained in this state.

Further, when the clutch ball 110 passes over the convex portion 61b, a force for rotating the rotary shaft 25 in an arbitrary direction is generated by the urging force of the compression spring 100, and an impact sound is generated when the clutch ball 110 passes over the convex portion 61b. This impact sound is generated, for example, by the collision of the clutch ball 110 with the clutch ball sliding portion 61, but may be generated for other reasons. By generating this impact sound, the user can recognize that the angle of the blade 30 has changed. In addition, in addition to the impact sound, the tactile sensation brought about by the compression spring 100 is generated at the time of impact, and the tactile sensation and the impact sound are collectively referred to as the impact sensation.

When the rotation shaft 25 is continuously rotated as described above, the end portion of the arcuate projection portion 64 of the impact roller 60 abuts against the roller side convex portion 75 on the side of the transmission shaft 70, and is further transmitted after the abutment. When the rotation of the rotating shaft 25 causes the impact roller 60 to rotate, the transmitted shaft 70 is rotated in accordance with the rotation of the impact roller 60. When the rotation is continued, the abutting convex portion 77 on the other side of the transmission shaft 70 abuts against the regulating protrusion portion 83. After the abutting projection 77 comes into contact with the regulating projection 83, the transmission shaft 70 cannot continue to rotate.

Further, when the rotation shaft 25 is rotated in the reverse direction, the operation is also the same as the above operation.

The positional relationship between the transmission shaft 70 and the regulating protrusion 83 when the impact roller 60 is rotated as described above is as shown in FIG. In Fig. 11, the upper portion shows a side cross-sectional view of the drum engaging portion 73, and the middle portion portion shows A side cross-sectional view of the housing engaging portion 74 and the lower housing 80 is shown, and the lower portion shows the direction of the blade 30. In the following, in FIG. 11, the lower roller side convex portion 75 is the drum side convex portion 75a, and the upper roller side convex portion 75 is the drum side convex portion 75b. In addition, in FIG. 11, the lower contact convex part 77 is a contact convex part 77a, and the upper contact convex part 77 is a contact convex part 77b.

In the state shown in FIG. 11(A), the blade 30 is located at the fully closed position in the width direction in the vertical direction (Z direction). At this time, the abutting convex portion 77a of the transmission shaft 70 and the regulating protrusion portion 83 are in contact with each other. Pick up. In addition, at this time, when the rotation shaft 25 is further rotated in a direction (counterclockwise direction) opposite to the direction in which the blade 30 is changed to the state shown in FIG. 11(B), the arcuate projection portion 64 and the drum side convex portion are formed. The state of 75b abutment. However, when the rotation in the opposite direction is released, the drum-side convex portion 75b is stopped at a position having a slight gap with the arcuate projection portion 64 or maintained in contact with the arcuate projection portion 64.

When the rotation shaft 25 is rotated by 90 degrees in the clockwise direction in FIG. 11(A), the clutch ball 110 passes over the convex portion 61b to generate an impact feeling, and then the state shown in FIG. 11(B) is obtained. At this time, the blade 30 is in a state of being rotated by 45 degrees from the fully closed position toward the fully open position. Further, at this time, since the arcuate projection 64 is separated from the drum-side convex portion 75b, the impact roller 60 rotates together with the rotary shaft 25, but the transmission shaft 70 does not rotate and remains the same as that of Fig. 11(A). The state of the rotated position.

Further, when the rotation shaft 25 is rotated by 90 degrees in the clockwise direction in FIG. 11(B), the clutch ball 110 passes over the convex portion 61b to generate an impact feeling, and then the state shown in FIG. 11(C) is obtained. At this point, the blade 30 is at full Open (horizontal) position. Further, in the process of transition from FIG. 11(B) to FIG. 11(C), since the arcuate projections 64 are not in contact with the roller-side convex portions 75a and 75b, even if the impact roller 60 is rotated, it is transmitted. The shaft 70 also does not rotate and is in a state of maintaining the same rotational position as that of Fig. 11(A). However, in the state shown in FIG. 11(C), the drum-side convex portion 75a is stopped at a position having a slight gap with the arcuate projection portion 64 or maintained in a state of abutting against the arcuate projection portion 64.

When the rotation shaft 25 is further rotated by 90 degrees in the clockwise direction in FIG. 11(C), the clutch ball 110 is brought into the convex portion 61b to generate an impact feeling, and then the state shown in FIG. 11(D) is obtained. At this time, the blade 30 is further rotated by 45 degrees (a state in which it is at a position of 45 degrees in the reverse direction). Further, when transitioning from FIG. 11(C) to FIG. 11(D), the transmission shaft 70 is rotated 90 degrees in the clockwise direction by the abutment between the roller-side convex portion 75a and the arcuate projection portion 64. .

When the rotation shaft 25 is rotated by 90 degrees in the clockwise direction in FIG. 11(D), the clutch ball 110 passes over the convex portion 61 to generate an impact feeling, and then the state shown in FIG. 11(E) is obtained. At this time, the blade 30 is further rotated by 45 degrees and is in a fully closed position in the width direction thereof in the vertical direction. However, since the fully closed position is a position that is different from the fully closed position shown in FIG. 11(A) by 180 degrees, in the following description, the position of the blade 30 shown in FIG. 11(E) is referred to as "reverse. To the fully closed position."

Further, when transitioning from FIG. 11(D) to FIG. 11(E), the transmission shaft 70 is rotated by 90 degrees in the clockwise direction by the contact between the roller-side convex portion 75a and the arcuate projection portion 64.

Further, when the rotation shaft 25 is further rotated in the clockwise direction from the state shown in Fig. 11(E), since the abutting projection 77b abuts against the regulating projection 83, the rotation shaft 25 cannot be further slid. Rotate in the hour hand direction. Thereby, the impact roller 60 and the rotating shaft 25 are also in a state in which they cannot be further rotated.

As described above, the rotating shaft 25 and the impact roller 60 can rotate 360 degrees from FIG. 11(A) to FIG. 11(E).

<effect>

According to the horizontal louver 10 having the above configuration, the ball is not placed in the ball accommodating portion as in the prior art document 1, and the rotation of the rotating shaft is restricted by the ball, and the abutting convex portion 77 of the transmitted shaft 70 is transmitted. The rotation of the rotating shaft 25 is restricted by abutting against the regulating protrusion 83 of the lower casing 80. Therefore, it is possible to prevent the case where the gap between the inner wall surface of the circular hollow portion and the projection is large or the gap between the projection and the ball housing portion is large as in Patent Document 1. It gets stuck and creates an obstacle to rotation.

Further, in the present embodiment, the rotation of the impact roller 60 that is integrally rotated with the rotation shaft 25 is not directly restricted, but the transmission shaft 70 that does not rotate integrally with the rotation shaft 25 is provided, and the transmission is restricted. The rotation of the transmission shaft 70 is restricted to restrict the rotation of the impact roller 60 and the rotation shaft 25. Therefore, the rotatable range of the rotating shaft 25 becomes a range in which the impact roller 60 is rotatable relative to the lower casing 80 when the transmission shaft 70 is not provided, and the range in which the transmission shaft 70 is rotatable relative to the lower casing 80 range. Therefore, it is possible to increase the range of angles that allow the rotation shaft 25 to rotate.

In the present embodiment, in particular, the following structure is employed. which is, An arcuate projection 64 is provided on the impact roller 60, a roller side convex portion 75 and a contact convex portion 77 are provided on the transmission shaft 70, and a restriction projection 83 is provided on the lower casing 80. Further, when the impact roller 60 is relatively rotated with respect to the transmission shaft 70 by the rotation of the rotation shaft 25, the arcuate projection portion 64 can abut against the roller side convex portion 75, and in the arcuate projection portion After the abutment with the roller side convex portion 75, the impact roller 60 rotates together with the transmission shaft 70.

However, when the abutting projection 77 of the transmission shaft 70 comes into contact with the restriction projection 83, the rotation of the transmission shaft 70 in the direction in which the restriction projection 83 interferes is restricted. By adopting such a configuration, although the rotation of the rotating shaft 25 is restricted, the angular range in which the rotating shaft 25 is allowed to rotate can be increased.

Further, in the present embodiment, the impact roller 60 is provided with a clutch ball sliding portion 61, and the clutch ball sliding portion 61 is provided with a minimum diameter portion 61a and a convex portion 61b. Further, the clutch ball 110 is abutted against the clutch ball sliding portion 61 by the compression spring 100. Therefore, when the rotating shaft 25 is rotated to cause the clutch ball 110 to pass over the convex portion 61b, an impact feeling accompanying the impact sound can be generated, and by the occurrence of the impact feeling, the user can recognize that the angle of the blade 30 has changed.

Here, as a method of generating an impact feeling, a configuration in which a projection is provided on a thin portion of the extension portion and the projection is abutted against the uneven portion of the circular opening may be employed as in the configuration shown in Patent Document 2. However, according to such a structure, in the course of long-term use, there is a problem that the thin-walled portion is deteriorated to cause the impact feeling by the thin-walled portion to be weakened. Therefore, no The method obtains the desired impact sensation, and thus there is a problem that the positioning function is lowered.

However, in the present embodiment, as a method of generating an impact feeling, a mode in which the clutch ball 110 is abutted against the clutch ball sliding portion 61 by the compression spring 100 is employed. Therefore, there is no problem that the thin-walled portion is deteriorated, so that a good impact feeling can be obtained for a long period of time. Further, the positioning function realized by the clutch ball 110 abutting on the clutch ball sliding portion 61 by the compression spring 100 does not cause the above-described deterioration problem, and thus can exhibit a good positioning function for a long period of time.

Further, in the present embodiment, the convex portion 61b is present in the plurality of convex portions 61b, that is, immediately before the abutting convex portion 77 comes into contact with the regulating protrusion portion 83 so that the rotational position of the rotating shaft 25 is restricted. The clutch ball 110 passes over the convex portion 61b to generate a convex portion 61b having an impact feeling. Therefore, the user can recognize that the terminal has reached the rotatable range of the rotating shaft 25, and it is possible to prevent a problem that the rotating shaft 25 is forcibly rotated.

Further, in the present embodiment, among the plurality of minimum diameter portions 61a, there are a minimum diameter portion 61a where the clutch ball 110 is located when the blade 30 is in the fully open position, and the blade 30 is in the fully closed position shown in Fig. 11(A). The minimum diameter portion 61a where the clutch ball 110 is located and the minimum diameter portion 61a where the clutch ball 110 is located when the blade 30 is at the fully closed position (reverse fully closed position) shown in Fig. 11(E). Therefore, the positioning (position holding) at the rotation end of the rotating shaft 25 can be performed favorably.

Further, in the present embodiment, the impact roller 60 is provided with an arcuate projection 64, and the lower casing 80 is provided with a restriction projection 83. Further, the driven shaft 70 is provided with a roller side convex portion 75 that abuts against the arcuate projection portion 64. The abutting convex portion 77 is in contact with the regulating protrusion portion 83. Therefore, when the impact roller 60 is rotated by a predetermined angle in accordance with the rotation of the rotating shaft 25, the arcuate projection 64 comes into contact with the roller-side convex portion 75, and the arc-shaped projection portion 64 abuts against the roller-side convex portion 75. Thereby, the transmitted shaft 70 can be rotated. At this time, since the rotation shaft 25 can be rotated by a predetermined angular range before the arcuate projection 64 comes into contact with the drum-side convex portion 75, the angular range in which the rotation shaft 25 is allowed to rotate can be increased. Further, the contact between the arcuate projection 64 and the roller-side convex portion 75 and the contact between the abutting projection 77 and the regulating projection 83 can reliably restrict the rotation of the rotary shaft 25.

Further, in the present embodiment, the clutch ball 110 is housed in the concave portion 84 of the lower casing 80, and the clutch ball 110 slides on the clutch ball sliding portion 61 with the rotation of the impact roller 60 while being in the concave portion. 84 internal movement. Further, the clutch ball 110 moves in the radial direction of the impact roller 60 inside the cavity portion 84. In this case, since the clutch ball 110 moves toward or away from the center of rotation of the impact roller 60, the clutch ball 110 moves with the impact roller 60 in either of the forward and reverse directions of the impact roller 60. The slidability of the sliding is the same, so that the same impact feeling can be obtained in any one of the rotations.

Further, when the clutch ball 110 is moved in the vertical direction (Z direction; the direction in which the plurality of blades 30 are arranged when the direction control rope R1 is stretched) as compared with when the clutch ball 110 is moved in the width direction (Y direction), it can be reduced. The width of the upper beam 20. That is, in the horizontal louver 10 of the present embodiment, it is possible to suppress an increase in the size in the width direction (Y direction), and it is possible to increase the angular range in which the rotation shaft 25 is allowed to rotate.

(Second embodiment)

Hereinafter, the horizontal blind 10 according to the second embodiment of the present invention will be described with reference to the drawings. Further, the horizontal louver 10 in this embodiment has the same structure as the horizontal louver 10 in the first embodiment described above except for the click unit 50A. Therefore, in the following description, the impact unit 50A will be described, and the description of the other portions will be omitted. In the present embodiment, the portions other than the impact unit 50A will be described using the same reference numerals as those of the above-described first embodiment.

As shown in Fig. 12, in the present embodiment, the structure of the striking roller 60A constituting the striking unit 50A is different from that of the striking roller 60 in the above-described first embodiment. As shown in Fig. 13, in the present embodiment, two convex portions 61b are provided on the clutch ball sliding portion 61A of the impact roller 60A. Moreover, there are two minimum diameter portions 61a between the two convex portions 61b. Among them, the two minimum diameter portions 61a are disposed such that the circumference of one of the minimum diameter portions 61a1 is shorter, and the circumference of the other minimum diameter portion 61a2 is longer.

Here, when the clutch ball 110 is on the other minimum diameter portion 61a2, the rotation shaft 25 does not reach the rotation end, and can be rotated in accordance with the rotational force. However, when the clutch ball 110 is at the minimum diameter portion 61a1 after passing over the convex portion 61b from the other minimum diameter portion 61a2 (the impact feeling is generated at this time), the rotation shaft 25 reaches the rotation end, thereby being restricted from further rotation.

That is, the convex portion 61b has a function of notifying the user that the rotating shaft 25 has reached the rotating terminal by causing an impact feeling. However, when the clutch ball 110 is on the other minimum diameter portion 61a2, the position of the clutch ball 110 is not fixed, and the clutch ball 110 can be at the circumference of the other minimum diameter portion 61a2. Sliding freely within the range.

In the horizontal louver 10 having the impact unit 50A configured as described above, similarly to the horizontal louver 10 of the first embodiment, the rotation shaft 25 can be restricted from rotating by a predetermined angle or more via the impact roller 60A and the transmission shaft 70. angle. Further, since the rotatable range of the rotating shaft 25 becomes a range in which the impact roller 60A can rotate and a range in which the transmission shaft 70 can be rotated, the angular range in which the rotating shaft 25 is allowed to rotate can be increased.

Further, in the present embodiment, since the clutch ball 110 can freely slide in the circumferential length of the other minimum diameter portion 61a2, the angle of the blade 30 can be freely changed within the circumference.

<Modification>

Although the embodiments of the present invention have been described above, the present invention can be variously modified in addition to the above embodiments. The various modifications are described below.

In the above embodiments, a structure in which only one of the transmission shafts 70 is provided is employed. However, it is also possible to use two or more transmitted shafts to constitute the striking unit. However, when the above-described structure using two or more transmitted shafts is employed, it is necessary to slightly change the structure of the transmitted shaft at the intermediate position. That is, as shown in Fig. 14, on the transmission shaft 70B (intermediately transmitted shaft 70B) located between the impact roller 60 and the driven shaft 70, or between the transmission shaft 70, on the flange The cylindrical portion 71 close to the impact roller 60 side (X2 side) is provided with the drum-side convex portion 75, but the abutting convex portion 77 is not provided. Instead, from the flange portion 72 toward the opposite side of the impact roller 60 (X1 The side portion is extended to form the same protrusion 78 as the arcuate protrusion 64.

Here, in addition to the arc shape, the protrusion portion 78 may be provided with two or more configurations such as one end and the other end defining a predetermined angle range, and other forms such as a pin shape may be employed. In addition, the protrusions 78 are disposed within an angular range of less than 90 degrees. Specifically, the protruding portion 78 is provided in an angular range in which the impact roller 78 can be rotated by approximately 360 degrees (including 360 degrees) after the projection 78 is brought into contact with the roller-side convex portion 75. However, the protrusions 78 may be provided in an angular range other than the above-described angular range.

When the intermediate transmission shaft 70B configured as described above is used, the range of the rotation angle of the rotation shaft 25 can be increased in accordance with the number used.

Further, in each of the above embodiments, the striking unit 50 has the transmitted shaft 70. However, the striking unit 50 may also adopt a structure that does not have the shaft 70 to be transmitted. In the case of such a configuration, since the transmission shaft 70 is not present, the range of the rotation angle of the rotation shaft 25 cannot be increased. However, since the clutch ball 110 abuts against the clutch ball sliding portion 61 of the impact roller 60 in a state in which the biasing force is applied by the compression spring 100, the clutch ball 110 can be satisfactorily generated when the clutch ball 110 passes over the convex portion 61b.

Further, in each of the above embodiments, the case where the present invention is applied to the horizontal blind 10 as a solar radiation shielding device has been described. However, the solar shading device to which the present invention can be applied is not limited to the horizontal blind 10, and the present invention can be applied to a vertical blind.

In addition, in the above embodiments, in each rotation direction There is a convex portion 61b corresponding to the rotational end of the rotating shaft 25. That is, the clutch ball sliding portion 61 of the impact roller 60 is provided with a convex portion 61b corresponding to the rotational end when the rotating shaft 25 is rotated in the clockwise direction and a rotating terminal when the rotating shaft 25 is rotated in the counterclockwise direction. Corresponding convex portion 61b. However, it is also possible to provide only the convex portion 61b corresponding to the rotation end in either of the clockwise direction and the counterclockwise direction.

Further, in the above-described first embodiment, the minimum diameter portion 61a and the convex portion 61b are respectively provided in the circumferential direction of the impact roller 60 by eight. However, the number of the minimum diameter portions 61a and the convex portions 61b is not limited to eight. For example, a configuration may be adopted in which a minimum diameter portion 61a that positions and holds the clutch ball 110 when the blade 30 is in the fully open position and a clutch ball when the blade 30 is in the fully closed position (first fully closed position) are provided. a minimum diameter portion 61a that positions and holds the minimum diameter portion 61a that is positioned and held, and a minimum diameter portion 61a that positions and holds the clutch ball 110 when the blade 30 is in the reverse fully closed position (second fully closed position), and is provided with the minimum diameter portion described above 61a is an equal number of convex portions 61b.

Further, in the present embodiment, the impact roller 60 for generating an impact feeling is provided in the striking unit 50. However, it is also possible to adopt a configuration in which the convex portion 61b is not provided on the impact roller and the compression spring 100 and the clutch ball 110 are omitted. In the case of such a configuration, even if the rotating shaft 25 is rotated, the impact feeling cannot be obtained, and it is not clear whether the rotating shaft 25 is at the end of rotation or whether the blade 30 has a predetermined inclination angle. However, the range of the rotation angle of the rotating shaft 25 can be increased.

10‧‧‧Horizontal blinds (corresponding to solar shading devices)

20‧‧‧上梁

21‧‧‧Restriction device

22‧‧‧Support roller

23‧‧‧Support parts

24‧‧‧ frame

25‧‧‧Rotary axis

26‧‧‧ Gearbox

30‧‧‧ leaves

31‧‧‧ Fixing frame

32‧‧‧Lower beam

40‧‧‧Operation lever (corresponding to operating parts)

41‧‧‧balancer

50‧‧‧ impact unit

R1‧‧‧ direction control rope (corresponding to rope parts)

R2‧‧‧ lifting rope

Claims (8)

An insolation shielding device comprising: a rotating shaft capable of rotating under operation of an operating member; a fitting body mounted on the rotating shaft in a state of being integrally rotated together with the rotating shaft; a rotating body that is rotatably rotatable relative to the rotating shaft and configured to abut the fitting body; and a housing having an inner space in which the fitting body and the rotating body are housed, A first engaging portion is disposed on the rotating body, a second engaging portion and a third engaging portion are disposed on the rotating body, and a fourth engaging portion is disposed on the housing, the solar shielding device When the fitting body is relatively rotated with respect to the rotating body by the rotation of the rotating shaft, the first engaging portion can abut against the second engaging portion, and the first engaging portion is After the second engaging portion abuts, the rotating body rotates together with the fitting body, and when the third engaging portion abuts the fourth engaging portion, the rotating body faces the fourth engaging portion The rotation of the direction in which the disturbance occurs is limited. The solar radiation shielding apparatus according to claim 1, wherein the fitting body is provided with a sliding portion, and the sliding portion is provided with a convex portion and a concave portion, and the convex portion is provided to be opposite to the concave portion. The center of rotation of the rotating shaft protrudes outward in the radial direction. The solar radiation shielding device of claim 2, wherein The sliding member abuts against the sliding portion in a state where a biasing force is applied by the biasing member. The solar radiation shielding apparatus according to claim 3, wherein the convex portion is provided with at least one pair, and when the rotating body rotates together with the fitting body, the sliding member passes over the convex portion to cause an impact. After the feeling, the third engaging portion abuts against the fourth engaging portion, thereby restricting the rotational position of the rotating shaft. The solar radiation shielding apparatus according to claim 4, wherein the plurality of blades are supported via the rope member, wherein the plurality of blades are capable of changing direction along with rotation of the rotating shaft, the concave portion along the fitting body The circumferential direction is at least three, and the three recesses include: a recess in which the sliding member is located when the blade is in the fully open position, a recess in which the sliding member is located when the blade is in the first fully closed position, and the blade is in the a recess in which the sliding member is located in the fully closed position, wherein the second fully closed position is a position opposite to the first fully closed position. The solar radiation shielding apparatus according to any one of claims 3 to 5, wherein the sliding member is housed in the housing, and the sliding member slides on the sliding portion as the fitting body rotates Moving in the radial direction of the fitting body inside the casing. The solar radiation shielding apparatus according to any one of claims 1 to 6, wherein the fitting body is provided with an arcuate projection corresponding to the first engaging portion, and the housing is provided with Corresponding to the restricting protrusion of the fourth engaging portion, The rotating body is provided with a first convex portion that abuts against the arcuate protruding portion and corresponds to the second engaging portion, and the rotating body is provided with the regulating protruding portion and corresponds to the rotating portion a second convex portion of the third engaging portion. An insolation shielding device comprising: a rotating shaft that is rotatable under operation of an operating member; and a fitting body mounted on the rotating shaft in a state of being integrally rotated together with the rotating shaft; a housing having an internal space in which the fitting body is housed, a first engaging portion being provided on the fitting body, and a housing side engaging portion provided on the housing, the sunshade shielding The device is configured to be capable of abutting the housing-side engaging portion when the fitting body is relatively rotated relative to the housing by the rotation of the rotating shaft, and transmitting the first engaging portion The engaging portion abuts against the housing-side engaging portion, so that rotation of the rotating shaft in a direction in which the first engaging portion interferes with the housing-side engaging portion is restricted, and the fitting is provided on the fitting body a sliding portion provided with a convex portion and a concave portion, and the convex portion is provided to protrude radially outward from a rotation center of the rotating shaft than the concave portion, and the sliding member applies a force by the biasing member The state is in contact with the sliding portion.