JP2018053600A - Assembled structure and braking device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembled structure including a construction in which a second member is held at a guide portion of a first member and the second member is slidable and is concurrently prevented from separating from the guide portion.SOLUTION: Provided is an assembled structure including a first member and a second member that is movable relative to the first member, the first member having a guide portion that holds the second member in a slidable manner and introduction means for introducing the second member into a specific position of the guide portion, the assembled structure further including urging means for urging the second member in a state of being held by the guide portion and restriction means for restricting the second member from being released from its held state at the specific position, the urging means urging the second member away from the specific position.SELECTED DRAWING: Figure 13

Description

  The present invention relates to an assembly structure including a first member and a second member movable relative to the first member, for example, a structure including a case and a slider slidably held in the case. It is about.

  Conventionally, there is an assembly structure including a case and a slider that is slidably held in the case. As one of such assembly structures, the slider is urged by a spring, gravity or the like while being held by the guide part of the case, and the slider moves in the urging direction and exhibits a predetermined function. Is assumed.

  By the way, when assembling the slider in the case in such an assembly structure, in order to introduce the slider into the guide portion, it is necessary to provide introduction means such as a groove connected to a specific position of the guide portion in the case. However, even if the urging force is configured to urge the slider in a direction away from the specific position, the slider slides to the specific position due to an unexpected external force, and the slider passes through the introduction means. There was a possibility that it would come off the guide part.

  The present invention has been made in view of such circumstances, and in a configuration in which a second member such as a slider is held by a guide portion of the first member such as a case, the second member can be slid and the guide portion It is an object of the present invention to provide an assembly structure having a configuration that does not deviate from the above.

  According to this invention, it is an assembly structure provided with the 1st member and the 2nd member relatively movable with respect to the said 1st member, Comprising: The said 1st member can slide the said 2nd member. An urging means for urging the second member in a state of being held by the guide portion; and a guide means for introducing the second member into a specific position of the guide portion. There is provided an assembly structure, further comprising restriction means for restricting release of the holding of the second member at a position, wherein the biasing means biases the second member in a direction away from the specific position. The

  According to the present invention, the second member is disengaged from the guide portion of the first member because the restricting means for restricting the release of the holding of the second member by the guide portion of the first member at the specific position is provided. Can be prevented.

  Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.

  Preferably, the second member includes a movable pulley.

  Preferably, the biasing means is a spring that biases the second member.

  Preferably, the introduction means is configured to introduce the second member into the guide portion against gravity, and the biasing means is configured to bias the second member in a direction other than the vertical direction.

  Preferably, the first member is a case that covers the second member, and the second member is a slider that slides in the case.

  Preferably, the case includes the guide portion and the regulating means on at least one side in a width direction substantially perpendicular to the urging direction of the urging member.

  Preferably, the slider includes a protrusion protruding at least on one side in the width direction, and the protrusion is supported by the guide portion so that the slider is supported in a state where the bottom portion is floated. .

  Preferably, the introducing means is a groove extending upward, the restricting means is formed by shallowing a groove of the introducing means upward, and the slider is formed by the case. When the slider is expanded in the width direction or the slider is narrowed in the width direction, the slider is introduced into the guide portion through the groove.

  According to the present invention, there is provided a braking device that includes a pair of clamping members that clamp the cord and brakes the movement of the cord in the longitudinal direction, and includes the assembly structure described above, and the slider Is provided with a braking device that holds at least one of the pair of narrowing members, and the pair of narrowing members sandwich the cord by moving the slider in the biasing direction of the biasing member. The

  Preferably, at least one of the pair of narrowing members is a rotating body that can be rotated in accordance with the movement of the cord in the longitudinal direction, and the braking device further includes a resistance applying unit that applies rotational resistance to the rotating body. The slider moves in the urging direction of the urging means along with the movement in one direction along the longitudinal direction of the cord, and the rotation of the rotating body is transmitted to the resistance applying portion. With the movement in the other direction along the direction, the slider moves against the urging force of the urging means, so that the transmission of the rotating body to the resistance applying unit is released.

  In addition, according to the present invention, the brake device described above and a shielding member suspended so as to be able to be moved up and down by the movement of the cord are provided, and the braking device attaches the slider when the shielding member is lowered. The movement of the cord is braked by moving in the biasing direction of the biasing member, and when the shield member is raised, the slider is moved in a direction against the biasing force of the biasing means to move the cord. A shielding device is provided that is configured to release braking.

It is the disassembled perspective view of the brake device which concerns on embodiment of this invention, (a) is the figure seen from the front upper side, (b) is the figure seen from the back upper side. It is the disassembled perspective view of the brake device which concerns on embodiment of this invention, (a) is the figure seen from the front lower side, (b) is the figure seen from the back lower side. It is an assembly drawing of the braking device of Drawing 1, (a) is a front perspective view, (b) is a back perspective view, and (c) is a left side view. It is an assembly drawing of the braking device of Drawing 1, (a) is a top view and (b) is a bottom view. It is a figure showing the case of the braking device of Drawing 1, (a) is a front perspective view, and (b) is a back perspective view. FIG. 2 is an assembly diagram in which a case is removed from the braking device of FIG. 1, (a) is a front perspective view and (b) is a rear perspective view. FIG. 6A is an assembly view in which a slider is further removed from FIG. 6A, where FIG. 6A is a front perspective view, and FIG. 6B is a rear perspective view. It is sectional drawing which shows the positional relationship of the roller part, slider, and pinion gear of the braking device of FIG. It is a figure showing the case of the braking device of Drawing 1, (a) is a top view and (b) is a rear view. It is a figure showing the case of the braking device of Drawing 1, (a) is a perspective view seen from the back, and (b) is an enlarged view of E section of (a). FIG. 5 is a cross-sectional view taken along line BB in FIG. 4A and shows only the case. It is a figure showing the slider of the brake device of FIG. 1, (a) is a front perspective view, (b) is the back perspective view seen from the lower side. It is the disassembled perspective view which looked at the part above the collar part of the case shown in FIG. 5, the slider, and the coil spring from the back side. It is an AA line cutting section sectional view of Drawing 3 (c). FIG. 5 is a cross-sectional view taken along the line BB in FIG. FIG. 15 is a diagram illustrating a state in which the braking device of FIG. 1 brakes a cord using FIG. 14, where (a) shows a state where no tension is applied to the cord (steady state), and (b) shows a state where tension is applied to the cord FIG. 8 is a diagram summarizing the rotation direction of each member when the state is changed from (a) to (b), in a state where the cord is clamped between the rubber roller part and the roller part (clamped state). It is a figure which shows operation | movement of the braking device of FIG. It is a figure which shows the solar radiation shielding apparatus which concerns on embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a braking device according to the present invention and a solar shading device using the same will be described in detail with reference to the drawings.

<Braking device>
A braking device 1000 according to an embodiment of the present invention will be described with reference to FIGS. The braking device 1000 according to the present embodiment is a braking device that brakes the movement of the cord CD such as a lifting / lowering cord, a motion conversion unit that converts the movement of the cord CD into a rotational motion, and imparts rotational resistance to the rotational motion. And a resistance applying portion connected to each other in a substantially vertical direction. Here, in this embodiment, the slider 20, the coil spring SP, the tension transmission roller 30 including the shaft core 31 and the roller portion 32, the idle roller 40 including the shaft core 41 and the roller portion 42, the internal gear carrier 260, the planetary gears. 280 and a part of the case 10A constitute a motion converting part, and the weight 340, the weight holder 320 with sun gear, the base 70, and a part of the case 10A constitute a resistance applying part.

1 <Overall configuration of braking device>
1 and 2 are exploded perspective views of the braking device 1000 according to the present embodiment. In this embodiment, the tension transmission roller 30 and the idle roller 40 constitute a pair of clamping members that clamp the code CD, and the pair of narrowing members are held by the slider 20 as a holding member. Hereinafter, each member will be described.

1-1 <Alignment member 200>
As shown in FIGS. 3A and 3B, the alignment member 200 is used to insert a plurality of cords CD and align the plurality of cords CD in the same direction. The alignment member 200 can be formed of a resin such as plastic, for example. Here, as shown in FIG. 3A, the directions of the arrows are front and rear, left and right, and top and bottom, respectively. That is, the direction in which the distance between a first ceiling wall groove 16 and a second ceiling wall groove 17 described later becomes narrow is defined as the front, and the left and right direction (width direction) and the up and down direction are determined.

  The alignment member 200 has a configuration in which two substantially rectangular insertion portions 201 for inserting a code CD are formed in front and rear of a substantially rectangular parallelepiped frame 200a penetrating in the vertical direction. In the present embodiment, By passing the three cords CD through the insertion portion 201 and the upper portion of the insertion portion 201, the cord CD is sandwiched between the pair of sandwiching members in a state where the cord CD is aligned at substantially equal intervals in the vertical direction. .

1-2 <Case 10A>
Next, the case 10 </ b> A as the first member will be described with reference to FIGS. 1 to 5, 9 to 11, and 13. The case 10A constitutes a housing together with a base 70, and includes a slider 20, a coil spring SP, a tension transmission roller 30 including an axis 31 and a roller portion 32, ring-shaped members 33 and 34, an axis 41 and a roller portion. 42, the idler roller 40, the pinion gear 50, the internal gear carrier 260, the planetary gear 280, the plate 300, the sun gear weight holder 320, and the weight 340 are held.

  Further, the case 10A constitutes a casing of the braking device 1000 together with, for example, the base 70 shown in FIG. Further, the weight applying unit 320 with the sun gear and the weight 340 shown in FIG.

  As shown in FIG. 5, the case 10 </ b> A includes a top wall part 11 having a substantially square outer shape, a front side wall part 12 f, a right side wall part 12 r and a left side wall part connected to the front side wall part 12 f and the top wall part 11. 12l, a rear side wall portion 12b connected to each of the right side wall portion 12r and the left side wall portion 12l, and the top wall portion 11, facing the front side wall portion 12f, the rear side wall portion 12b, the front side wall portion 12f and the left side wall portion. The main portion includes a flange portion 13 extending from 12l toward the radial side, a cylindrical portion 13C connected to the flange portion 13 and a cover portion 112 connected to the cylindrical portion 13C.

  An insertion groove 113 is formed in the front side wall part 12f and the rear side wall part 12b. These two insertion grooves 113 are opposed to each other in the front-rear direction. These insertion grooves 113 are grooves through which the code CD is inserted in the front-rear direction. Here, the number of cords CD inserted into the insertion groove 113 is not particularly limited, but in the present embodiment, an example is shown in which three cords CD are inserted in the vertical direction (see FIG. 3).

  Further, as shown in FIGS. 3, 5, and 11, a horizontal groove 114 as a guide portion is provided above the left and right side wall portions 12r and 12l. As shown in FIG. 3, the horizontal groove 114 supports the protrusion 230 provided on the slider 20 when the case 10 </ b> A holds the slider 20 inside. Specifically, as shown in FIGS. 5 and 11, the horizontal groove 114 is formed at a corner portion where the top wall portion 11 and the side wall portions 12l and 12r of the case 10A are connected, and extends horizontally in the front-rear direction. The upper surfaces of the side walls 12l and 12r are the support surfaces 114a. By the support surface 114a of the horizontal groove 114, the slider 20 can be supported with its bottom part floating. Details will be described later.

  As shown in FIG. 4A and FIG. 9 and the like, a first ceiling wall groove 16 and a second ceiling wall groove 17 are formed in the ceiling wall portion 11. The first ceiling wall groove 16 and the second ceiling wall groove 17 are respectively formed obliquely with respect to the longitudinal direction of the code CD, that is, the front-rear direction, and the first ceiling wall 16 and the second ceiling wall groove 17 are arranged in the first longitudinal direction of the code CD. The distance between the top wall groove 16 and the second top wall groove 17 is reduced.

  Specifically, the first ceiling wall groove 16 is formed in an arc shape, and as shown in FIG. 17, the sandwiching guide slope 16a, the release guide slope 16b, the sandwiching side regulation surface 16c, and the release side regulation surface 16d. To form an inner peripheral surface). In addition, in FIG. 17, the shape of the groove | channel is shown typically. The arc of the first ceiling wall groove 16 is formed to be concentric with the inner peripheral surface of the internal toothed carrier 260 shown in FIG. 7 in a plan view (see FIG. 4). On the other hand, the second ceiling wall groove 17 is formed in a shape having a gentle curve, and an inner peripheral surface is formed by the sandwiching guide slope 17a, the release guide slope 17b, the sandwiching side regulation surface 17c, and the release side regulation surface 17d. (See FIG. 17). The second top wall groove 17 has a substantially linear shape on the front side, and is curved away from the first top wall groove 16 as it goes rearward (see FIG. 4). This is because when the second top wall groove 17 is substantially linear, the first top wall groove 16 is an arc that approaches the code CD from the rear to the front. This is to prevent the vertical displacement with respect to the code CD from being different between the shaft core 31 and the shaft core 41 when moving along the first ceiling wall groove 16 and the second ceiling wall groove 17 respectively. That is, if one is an arc and the other is substantially linear, the vertical distance to the cord CD differs in the front-rear direction.

As described above, by bringing the displacement of the shaft core 31 and the shaft core 41 in the vertical direction of the code CD close to each other, the roller portion 32 and the roller portion 42 can appropriately sandwich the code CD. Note that the second ceiling wall groove 17 is not limited to this, and for example, a groove having substantially the same shape as the first ceiling wall groove 16 may be curved toward the code CD side. Thereby, the vertical displacement with respect to the code CD can be made substantially the same between the shaft core 31 and the shaft core 41, and wear of the code CD can be reduced. Here, in the present embodiment, in addition to making the vertical displacement with respect to the code CD the same as much as possible between the shaft core 31 and the shaft core 41, the interaction due to the movement of other members and the like is taken into consideration, and FIG. The shape shown in (a) was adopted.

  At the edge of the first ceiling wall groove 16, as shown in FIGS. 4A, 5A, and 5B, the first ceiling wall groove 16 has an outer side of the case 10A in plan view of the case 10A. A first guide wall 16A that protrudes upward from the first top wall groove 16 is provided on at least a part of the edge of the first guide wall 16a, that is, at a part of the position along the clamping guide slope 16a. In the present embodiment, the first guide wall 16 </ b> A is provided so as to be approximately 90 degrees with respect to the first ceiling wall groove 16. The first guide wall 16 </ b> A is intended to reduce the surface pressure of the shaft core 31 that moves along the first ceiling wall groove 16. That is, the surface pressure of the shaft core 31 is reduced by providing the first guide wall 16A and increasing the area in contact with the shaft core 31. This is because the tension of the cord CD is applied and the surface pressure of the shaft core 31 is applied to the inner surface of the first ceiling wall groove 16 while the braking device 1000 is operating, and the first ceiling wall groove is applied by the surface pressure. If the inner surface of 16 is scraped, the distance between the roller portion 32 and the roller portion 42 changes, and the tight attachment of the code CD becomes unstable, and the rotation transmission to the roller portion 32 may be insufficient. . Further, since the inner surface of the first ceiling wall groove 16 is worn, the shaft core 31 may be easily shaken. In the present embodiment, by providing the first guide wall 16A, it is possible to prevent the case 10A from being scraped by the pressure from the shaft core 31. The thickness of the first guide wall 16A is arbitrary, but may be appropriately designed in consideration of the material of the case 10A, the moving speed of the shaft core 31, and the like.

  Further, at a position along the outer edge of the case 10 </ b> A in the second top wall groove 17, a second guide wall 17 </ b> A that protrudes upward from the second top wall groove 17 is provided at least at a part thereof. The second guide wall 17 </ b> A is provided so as to be approximately 90 degrees with respect to the second ceiling wall groove 17. The surface pressure of the shaft core 41 can be reduced by the second guide wall 17A, thereby preventing the case 10A from being scraped by the pressure from the shaft core 41. The thickness of the second guide wall 17A is arbitrary, but may be appropriately designed in consideration of the material of the case 10A, the moving speed of the shaft core 41, and the like.

  When the case 10A is formed of a strong material such as metal, the first guide wall 16A and the second guide wall 17A may not be provided. This is because the case 10A is solid and the case 10A is hardly scraped by the pressure from the shaft core 31 and the shaft core 41.

  As shown in FIGS. 3 and 5, the flange 13 faces the top wall 11 and extends from the front side wall 12f, the rear side wall 12b, the front side wall 12f, and the left side wall 12l toward the radial side. In this embodiment, it is a substantially circular shape. In addition, the inner surface of the flange portion 13 is provided with a step 117 that is convex in a ring shape, and reduces the frictional resistance with the internal toothed carrier 260 during assembly.

  The cylindrical portion 13C is connected to the collar portion 13 as shown in FIG. 5, and as shown in FIGS. 9 (b) and 10 (a), a ring-shaped inner peripheral gear that meshes with the planetary gear 280 on the inner surface. 115 is formed. In the present embodiment, the cylindrical portion 13C has a substantially cylindrical shape.

  The cover part 112 is connected to the cylindrical part 13 </ b> C and is a part that fits with the base 70. In this embodiment, the outer edge of the cover part 112 is substantially square. As shown in FIG. 1, the cover portion 112 is provided with two first engagement grooves 111 </ b> A at both ends of the left and right side surfaces. Then, two second engagement grooves 111B are provided at both ends of the front end portion, and one second engagement groove 111B is provided at substantially the center of the rear end portion. 111 A of 1st engagement grooves engage with the 1st engagement board part 701A of the base 70 shown by FIG. Further, the second engagement groove 111B is engaged with the second engagement plate portion 701B of the base 70. Thereby, case 10A and base 70 are engaged, and a housing | casing is formed.

  As shown in FIGS. 10 and 13, four vertical grooves 118 extending in a substantially vertical direction are formed on the inner side surfaces of the side walls 12l and 12r of the case 10A, two on each side in the width direction. . In the present embodiment, the vertical groove 118 is formed so that its cross section is semicircular. The vertical groove 118 is for introducing a protrusion 230 of the slider 20 described later into the horizontal groove 114 when the brake device 1000 is assembled or disassembled, and corresponds to the “introducing means” in the claims. . In the present embodiment, since there are four protrusions 230 of the slider 20, four vertical grooves 118 are also provided in the case 10A. The two vertical grooves 118 on the rear side of the four vertical grooves 118 are connected to the horizontal groove 114 at the rear end position of the horizontal groove 114 as shown in FIG. In the present embodiment, the connecting portion of the vertical groove 118 and the horizontal groove 114, that is, the position of the protrusion 230 of the slider 20 when introduced into the horizontal groove 114 through the vertical groove 118 is defined in the claims. This is the “specific position” of the guide portion (horizontal groove 114).

  Further, as shown in FIGS. 10 and 11, an inclined portion 119 formed by making the groove shallower upward is formed on the top of each vertical groove 118. The inclined portion 119 restricts the release of the slider 20 from being held by the horizontal groove 114. As shown in FIGS. 9A and 11, the inclined portion 119 supports the horizontal groove 114 when viewed from above. The surface 114a has a substantially rectangular shape in which the vertical groove 118 is not visible. The inclined portion 119 corresponds to “regulating means” in the claims. Details of the vertical groove 118 and the inclined portion 119 will be described later.

1-3 <Slider 20>
Next, the slider 20 as the second member will be described with reference to FIGS. 6, 12, and 13. The slider 20 holds the tension transmission roller 30 and the idle roller 40 inside and moves (slides) in the case 10 </ b> A together with the tension transmission roller 30 and the idle roller 40. The slider 20 has a top wall portion 21, a rear side wall portion 22, a front side wall portion 24 and a bottom wall portion 23.

The top wall portion 21 has a substantially rectangular shape with a pair of grooves. The pair of grooves are a first ceiling wall groove 26 and a second ceiling wall groove 27, respectively. The 1st ceiling wall groove | channel 26 and the 2nd ceiling wall groove | channel 27 are made into the linear groove | channel extended along the left-right direction, respectively, and are located in a line with each other.

  The bottom wall portion 23 faces the top wall portion 21. In the present embodiment, the bottom wall portion 23 has substantially the same shape as the top wall portion 21. However, the top wall 21 and the bottom wall 23 may have different shapes. The bottom wall portion 23 is also formed with a pair of grooves formed in a straight line in the left-right direction, and the pair of grooves serves as a first bottom wall groove 28 and a second bottom wall groove 29, respectively. The first bottom wall groove 28 faces the first top wall groove 26 in the vertical direction, and the second bottom wall groove 29 faces the second top wall groove 27 in the vertical direction.

  Here, the width of the first top wall groove 26 and the first bottom wall groove 28 is such a size that the diameter of the shaft core 31 can be accommodated. The widths of the second top wall groove 27 and the second bottom wall groove 29 are such that the shaft core 41 can be accommodated.

  As shown in FIG. 12, the top wall portion 21 is provided with four protrusions 230 at the four corners so as to protrude to the left and right of the top wall portion 21. The protrusions 230 are engaged with the horizontal grooves 114 of the case 10 </ b> A so that the slider 20 is held in a non-contact state with the internal toothed carrier 260 positioned below. Specifically, each protrusion 230 has a shape corresponding to the shape of the vertical groove 118, that is, a semicircular shape in plan view, and the four protrusions 230 pass through the four vertical grooves 118 on the inner surface of the case 10A. It is configured to be introduced into the horizontal groove 114 of 10A.

  A through hole 25 is formed in each of the front side wall portion 24 and the rear side wall portion 22. The through hole 25 penetrates the front side wall part 24 and the rear side wall part 22 in the front-rear direction at a substantially center in the width direction of the front side wall part 24 and the rear side wall part 22. The shape of the hole is arbitrary, but at least one cord CD can be inserted. Preferably, the shape is such that a plurality of cords CD can be inserted in a state of being aligned in the vertical direction. In the present embodiment, the shape is a substantially oval shape that is long in the vertical direction.

  Further, as shown in FIG. 12B, the rear side wall portion 22 is formed with concave portions 231 formed from the outer surface of the rear side wall portion 22 on both sides of the through hole 25. The shape of the recess 231 is arbitrary, and may be a shape cut out from the through hole 25 to the side surface as shown in the figure, or may be a substantially circular or substantially rectangular recess. A coil spring SP as an urging means is disposed in the left recess 231, and one end of the coil spring SP protrudes from the recess 231. At the time of assembling the braking device 1000, the slider 20 abuts against the inner wall 15d behind the case 10A and biases the slider 20 forward. In FIG. 12B, a portion protruding from the concave portion 231 of the coil spring SP is omitted.

  Here, as shown in FIG. 13, the size of the slider 20 having such a shape in the left-right direction is substantially the same as the distance between the inner walls in the width direction of the case 10A, and the size of the slider 20 in the front-rear direction is It is made smaller than the distance between the inner walls of the case 10A in the front-rear direction. Therefore, when the slider 20 is disposed in the space of the case 10A, the side surfaces of the top wall portion 21 and the bottom wall portion 23 of the slider 20 abut against the left and right inner wall surfaces 12a in the width direction of the case 10A, and the slider 20 The movement is restricted in the width direction with respect to the case 10A. In this state, the insertion groove 113 of the case 10A and the through hole 25 of the slider 20 are aligned in the front-rear direction. That is, the through hole 25 is a hole for inserting the code CD into the slider 20. On the other hand, with the slider 20 disposed in the space of the case 10A, a gap is created in the front-rear direction between the slider 20 and the inner wall surface of the case 10A, and the slider 20 moves in the front-rear direction with respect to the case 10A. be able to. Further, in a state where the slider 20 is disposed in the space of the case 10A, the coil spring SP protruding from the concave portion 231 of the rear side wall portion 22 of the slider 20 presses the inner wall 15d behind the case 10A. Therefore, in a state where the slider 20 is disposed in the space of the case 10A, the slider 20 is located on the front side and is pressed forward in the case 10A.

1-4 <Tension Transmission Roller 30, Idle Roller 40, and Pinion Gear 50>
Next, the tension transmission roller 30 which is one of the pair of narrowing members, the idle roller 40 and the pinion gear 50 which are the other of the pair of narrowing members will be described with reference to FIGS. To do.

  The tension transmission roller 30 is a “movable pulley” in claims, and includes a shaft core 31 and a cylindrical roller portion 32 that covers the outer peripheral surface of the shaft core 31. In the present embodiment, the surface of the roller portion 32 is knurled. The roller portion 32 is attached to one end side of the shaft core 31, and a pinion gear 50 is inserted into the other end of the shaft core 31. The roller part 32 is formed of rubber which is an elastic body, for example.

  The pinion gear 50 is attached to the shaft core 31 by press-fitting, and the pinion gear 50 rotates together with the tension transmission roller 30 around the shaft core 31. Further, the pinion gear 50 and the tension transmission roller 30 are separated so that the bottom wall portion 23 of the slider 20 can be interposed, and the roller portion 32 of the tension transmission roller 30 is accommodated in the slider 20 as described above. In this state, the pinion gear 50 is located outside the slider 20. Although not particularly illustrated, a washer or the like for reducing friction may be interposed between the pinion gear 50 and the bottom wall portion 23 of the slider 20.

  On the other hand, the idle roller 40 includes a shaft core 41 parallel to the shaft core 31 of the tension transmission roller 30 and a roller portion 42 that covers the outer peripheral surface of the shaft core 41. Therefore, the rotation shaft of the tension transmission roller 30 and the rotation shaft of the idle roller 40 are parallel to each other. The outer diameter of the roller portion 42 of the idle roller 40 is larger than the outer diameter of the roller portion 32 of the tension transmission roller 30. In this embodiment, the outer peripheral surface of the roller portion 42 of the idle roller 40 is made of resin, and has a higher friction coefficient than a flat metal surface. Further, both end portions of the shaft core 41 are exposed from the roller portion 42.

  The roller portion 32 of the tension transmission roller 30 and the roller portion 42 of the idle roller 40 are held inside the slider 20. The pinion gear 50 is held outside the slider 20. Here, the positional relationship among the roller portion 32, the slider 20, and the pinion gear 50 will be described with reference to FIG. FIG. 8 is a part of a cross section (BB cross section in FIG. 3) passing through the approximate center of the shaft core 31 and perpendicular to the front-rear direction. As shown in FIG. 8, the bottom wall portion 23 of the slider 20 is sandwiched between the roller portion 32 and the pinion gear 50 when the braking device 1000 is assembled.

  In addition, in this embodiment, a step 51 is provided in the pinion gear 50 in order to reduce the contact area between the pinion gear 50 and the slider 20 (see FIG. 8). Thereby, when the roller part 32 and the pinion gear 50 rotate integrally through the shaft core 31, the sliding resistance between the pinion gear 50 and the slider 20 can be reduced. Thereby, it becomes possible to make rotation operation smooth.

1-5 <Internal toothed carrier 260 and planetary gear 280>
Next, the internal toothed carrier 260 and the planetary gear 280 will be described with reference to FIGS. 7 and 14. In the present embodiment, the internal toothed carrier 260 has a substantially donut shape in plan view. The internal toothed carrier 260 includes a flange 262 that protrudes outward from the cylindrical portion 264 in plan view.

  An internal gear 261 that meshes with the pinion gear 50 is formed on the inner peripheral surface inside the cylindrical portion 264. The flange 262 is formed with a support shaft 263 that protrudes downward in the vertical direction (see also FIG. 1). The number of the support shafts 263 is not particularly limited, but is preferably equally spaced. In the present embodiment, as an example, four support shafts 263 are provided.

  The planetary gears 280 are rotatably supported on the support shafts 263, respectively. The planetary gear 280 meshes with a sun gear 323 described later and an inner peripheral gear 115 provided inside the case 10A. And it is possible to revolve around the center of the internal gear 261. Accordingly, the rotation of the pinion gear 50 is transmitted to the internal gear 261, so that the internal toothed carrier 260 is rotated, and accordingly, is supported rotatably on the support shaft 263 provided on the flange 262 of the internal toothed carrier 260. By rotating the planetary gear 280, the rotation caused by the pinion gear 50 can be increased.

1-6 <Sunlight Gear Weight Holder 320 and Weight 340>
Next, the weight holder 320 with sun gear and the weight 340 will be described with reference to FIGS. The weight holder 320 with sun gear is formed with convex portions 321 and concave portions 322 alternately arranged toward the outside of the ring-shaped ring portion 324 (see FIG. 1). As shown in FIGS. 14 and 15, on the outer peripheral surface of the outer side of the ring portion 324, a sun gear 323 that meshes with the planetary gear 280 has a rotation axis that is substantially perpendicular to the extending direction of the convex portion 321. It is provided as follows. A weight 340 is disposed in each recess 322. That is, it can be said that the weight holder 320 with the sun gear is a member that holds the weight 340 in each concave portion 322 with the convex portion 321 as a boundary when the braking device 1000 is assembled. The number of weights 340 is arbitrary, but it is preferable that the weights 340 are equally spaced from the viewpoint of balance during rotation. In the present embodiment, eight weights 340 are used as an example. Accordingly, eight convex portions 321 and eight concave portions 322 are also provided.

  Further, as shown in FIG. 15, each weight 340 is provided with a protrusion 341 on the base 70 side. Such protrusions 341 can reduce the resistance when contacting the base 70. Although the number of the protrusions 341 is arbitrary, in the present embodiment, four protrusions 341 are provided as an example.

  The weight 340 moves in a direction away from the center of the internal gear 261 by centrifugal force during rotation caused by the pinion gear 50, and makes contact with the inner peripheral wall of the case 10A, thereby providing resistance as a centrifugal brake against rotation. It is given. Accordingly, the resistance applying portion is formed by the inner peripheral wall of the case 10 </ b> A, the weight holder 320 with sun gear, and the weight 340. In the present embodiment, the motion conversion unit and the resistance applying unit are provided so as to be positioned substantially vertically.

  When assembling the braking device 1000, the internal toothed carrier 260 and the sun gear weight holder 320 are assembled via the plate 300 shown in FIG. Specifically, the cylindrical part 264 of the internal toothed carrier 260 is assembled so as to be inserted into the ring part 324 of the weight holder 320 with sun gear. Therefore, the diameter of the cylindrical portion 264 is designed to be slightly smaller than the diameter of the ring portion 324.

  Here, the plate 300 has a function of preventing the planetary gear 280 from tilting and preventing the planetary gear 280 and the weight 340 from interfering with each other.

1-7 <Base 70>
Next, the base 70 will be described with reference to FIGS. 1, 2, 4 (b) and 6. As shown in FIG. 1 and FIG. 2, a cylindrical portion 708 that is higher in volume than the surroundings and that is recessed on the lower side is provided at the approximate center of the base 70. As shown in FIG. 4B, a first base groove 706, a first guide wall 706A, a second base groove 707, and a second guide wall 707A are provided on the upper surface of the cylindrical portion 708.

  The first base groove 706 and the first guide wall 706A correspond to the first top wall groove 16 and the first guide wall 16A provided in the case 10A, respectively. The lower end of the shaft core 31 passes through the first base groove 706 and abuts on the first guide wall 706A formed at the edge thereof. Similarly, the second base groove 707 and the second guide wall 707A correspond to the second top wall groove 17 and the second guide wall 17A provided in the case 10A, respectively. The lower end of the shaft core 41 passes through the second base groove 707 and comes into contact with the second guide wall 707A formed at the edge thereof.

  The cylindrical portion 708 is not indispensable, but the lower ends of the shaft core 31 and the shaft core 41 can be placed on the mounting surface on which the braking device 1000 is mounted by providing the cylindrical portion 708 and so on. It is possible to prevent the contact and appropriately insert the lower ends of the shaft core 31 and the shaft core 41 (see FIG. 15).

  3A, 3B, and 6, the base 70 is provided with two first engagement plate portions 701A at both ends of the left and right side surfaces. Then, two second engagement plate portions 701B are provided at both ends of the front side surface, and one second engagement plate portion 701B is provided at substantially the center of the rear side surface. The first engagement plate portion 701A is engaged with the first engagement groove 111A provided in the case 10A. The second engagement plate portion 701B is engaged with the second engagement groove 111B provided in the case 10A. Thereby, case 10A and base 70 are engaged, and a housing | casing is formed.

  Further, as shown in FIG. 2 and FIG. 4B, it is used when the braking device 1000 is disposed outside the bottom surface of the base 70 in the head box of the shielding device (see the head box 101 in FIG. 18). A mounting cylinder 702 is provided. For example, by fitting the mounting cylinder 702 to a member such as a shaft provided in the head box, the braking device 1000 can be stably disposed in the head box.

2 <Assembly configuration>
Next, the assembled state of these members will be described with reference to FIGS. 1 to 4, 8 and 13. FIG. 3 is an assembly view of a braking device 1000 configured by combining these members. As shown in FIG. 3, the external appearance of the braking device 1000 includes a housing to which the case 10 </ b> A and the base 70 are connected, and an alignment member 200 arranged so as to be covered from above the case 10 </ b> A. As shown in FIGS. 1 and 2, the assembly is performed in a state where the central axes of the members are overlapped in the vertical direction. Specifically, the internal gear carrier 260 and the sun gear weight holder 320 holding the weight 340 are assembled via the plate 300. At this time, the planetary gear 280 provided on the internal toothed carrier 260 and the sun gear 323 provided on the weight holder 320 with sun gear are engaged with each other.

  Then, the shaft core 31 is slid horizontally in the first top wall groove 26 and the first bottom wall groove 28 of the slider 20, and the roller portion 32 is accommodated in the slider 20. At this time, the pinion gear 50 is positioned outside the slider 20 (see FIG. 8). Further, the roller 41 is accommodated in the slider 20 by moving the shaft core 41 in the horizontal direction in the second top wall groove 27 and the second bottom wall groove 29. Then, the slider 20 and the internal toothed carrier 260 are moved relative to each other so that the internal gear 261 and the pinion gear 50 provided on the internal toothed carrier 260 are engaged with each other.

  Thereafter, the base 70 is disposed below these members, and the case 10A is covered from above. At this time, it arrange | positions so that the slider 20 may be located in the downward direction inside case 10A, and it moves relatively up and down so that both may approach. Hereinafter, the assembly structure of the case 10A and the slider 20 at this time will be described in detail.

  As shown in FIG. 13, the case 10 </ b> A and the slider 20 are aligned with the positions of the four protrusions 230 of the slider 20 and the four vertical grooves 118 of the case 10 </ b> A. Assembling is carried out by introducing the protrusion 230 into the horizontal groove 114 through 230. Here, since the inclined portion 119 is formed in the vertical groove 118 so that the groove becomes shallower upward (downward in FIG. 13), the protrusion 230 is locked by the inclined portion 119. However, when the slider 20 is further pushed in, the protrusion 230 can overcome the inclined portion 119 and be introduced into the horizontal groove 114 due to the elasticity of the case 10 </ b> A and the slider 20. Thus, in the present embodiment, the slider 20 is introduced into the horizontal groove 114 against gravity.

  Once the protrusion 230 reaches the horizontal groove 114, the connecting portion between the horizontal groove 114 and the vertical groove 118 is filled with the inclined portion 119, so that the protrusion 230 does not return to the vertical groove 118. Further, the coil spring SP provided on the slider 20 abuts against the inner wall 15d behind the case 10A and biases the slider 20 forward, whereby the protrusion 230 is positioned forward of the vertical groove 118 in the normal state. It becomes. That is, it can be said that the position of the horizontal groove 114 is formed at a position against the urging force of the coil spring SP, and the coil spring SP urges the slider 20 in a direction away from the specific position. For these reasons, once the slider 20 is attached to the case 10 </ b> A, the protrusion 230 can be prevented from coming off the horizontal groove 114. The vertical groove 118 serves to pass the protrusion 230 not only when the braking device 1000 is assembled but also when it is disassembled. In this case, when the slider 20 is moved rearward relative to the case 10A against the urging force of the coil spring SP and the protrusion 230 reaches the position of the vertical groove 118, the protrusion 230 from the outside of the case 10A. Is moved inward and the slider 20 is moved downward relative to the case 10A after the inclined portion 119 is overcome.

  With the above configuration, the slider 20 can be supported in a floating state inside the case 10A. That is, the slider 20 is held in a non-contact state with the internal toothed carrier 260 positioned below. Therefore, contact between the slider 20 and other components such as the internal toothed carrier 260 can be prevented, and unnecessary resistance can be reduced or zero. Therefore, consumption of each member can be reduced.

Then, the first engagement groove 111A and the second engagement groove 111B provided in the case 10A and the first engagement plate part 701A and the second engagement plate part 701B provided in the base 70 are engaged with each other, and the case 10A. Then, the base 70 is fixed, and finally, the alignment member 200 is covered from above the casing constituted by the case 10A and the base 70. The alignment member 200 can be fixed by, for example, engaging a claw portion provided in the alignment member 200 and an engagement hole 19 (see FIG. 5) provided in the case 10A.

  The brake device 1000 assembled in this way is shown in FIG. After the assembly of the braking device 1000 is completed, three cords CD are provided in the insertion portion 201 of the alignment member 200, the upper portion of the insertion portion 201, the insertion groove 113 provided in the front and rear of the case 10A, and the front and rear of the slider 20. The through hole 25 is passed through. As a result, the state shown in FIGS. 3A and 3B is obtained.

  FIG. 3C is a left side view of the braking device 1000, that is, a side view seen from the direction of the arrow X in FIG. As shown in FIG. 3C, in the braking device 1000, the case 10A, the alignment member 200, and the base 70 are visually recognized from above in a side view. It can also be seen that the protrusion 230 is supported by the horizontal groove 114.

  As shown in FIG. 4A, the braking device 1000 can be visually recognized in the order of the case 10 </ b> A, the alignment member 200, and a part of the base 70 in order from the center. Here, as shown in FIGS. 3A, 3 </ b> B, and 4 </ b> A, the upper end of the shaft core 31 is provided in the case 10 </ b> A from the first ceiling wall groove 26 provided in the slider 20. The first ceiling wall groove 16 is inserted and exposed to the outside of the case 10A. Similarly, the upper end of the shaft core 41 passes through the second top wall groove 17 provided in the case 10A from the second top wall groove 27 provided in the slider 20, and is exposed to the outside of the case 10A. Thus, since the shaft cores 31 and 41 are exposed to the outside of the case 10A, these shaft cores can be easily moved. Therefore, even when the tension transmission roller 30 and the idle roller 40, which are a pair of narrow members, are urged in the direction approaching the code CD, the code CD can be easily inserted.

  Then, the first guide wall 16A provided at the edge of the first top wall groove 16 abuts the shaft core 31, and the second guide wall 17A provided at the edge of the second top wall groove 17 contacts the shaft core 41. It touches.

  Further, as shown in FIG. 4B, the base 70 has a lower end of the shaft core 31 inserted through the first base groove 706 and the shaft core 41 inserted through the second base groove 707 in the bottom view. Can be visually recognized. In addition, it is good also as a structure by which the lower end of the shaft core 31 and the shaft core 41 is covered from the exterior by covering the cylinder part 708 on the surface in which the attachment cylinder 702 is provided.

3 <Operation>
Next, operation | movement of the braking device 1000 which concerns on this embodiment is demonstrated using FIG. FIG. 16A shows a state where no tension is applied to the cord CD (steady state), and FIG. 16B shows a state where tension is applied to the cord CD, and the cord CD is sandwiched between the roller portion 32 and the roller portion. FIG. 16C is a diagram summarizing the rotation direction of each member when the state changes from FIG. 16A to FIG. 16B. 16 (a) and 16 (b) are sectional views taken along the line AA in FIG. 3 (c), similarly to FIG. Here, for convenience of explanation, the outer periphery of the roller portion 42 that does not appear in the cross-sectional view is displayed around the shaft core 41 and the outer periphery of the roller portion 32 is displayed around the shaft core 31. Note that the outer periphery of the roller portion 32 is not strictly circular because it is knurled, but for the sake of simplification of description, it is approximated to be circular.

  As shown in FIG. 16A, in the steady state, as described above, the coil spring SP contacts the inner wall (see FIG. 13) of the rear side wall portion 12b of the case 10A and presses the slider 20 forward. . Accordingly, the slider 20 is positioned in front of the case 10A. For this reason, the position is regulated by the shaft core 31 whose position is regulated by the first top wall groove 26 and the first bottom wall groove 28 of the slider 20, and the second top wall groove 27 and the second bottom wall groove 29. The shaft core 41 is moved forward together with the slider 20. Furthermore, the distance between the first ceiling wall groove 16 and the second ceiling wall groove 17 provided in the case 10 </ b> A held on the upper portion of the slider 20 decreases toward the front. Similarly, the distance between the first base groove 706 and the second base groove 707 provided in the base 70 decreases toward the front. Accordingly, the distance between the roller portion 42 rotatably supported by the shaft core 41 and the roller portion 32 rotatably supported by the shaft core 31 is also reduced. In other words, the first ceiling wall groove 16 and the first base groove 706 function as a restriction groove that restricts the movement of the roller portion 32 so that the shaft core 31 of the roller portion 32 is movable and the roller portion 32 does not move along the groove. To do. Similarly, the 2nd ceiling wall groove | channel 17 and the 2nd base groove | channel 707 are the groove | channels which the shaft core 41 of the roller part 42 fits so that a movement is possible, and it is as a control groove which controls that the roller part 42 does not move along a groove | channel. Function. Further, since the first ceiling wall groove 16 and the first base groove 706 are formed concentrically with the center point of the inner peripheral surface of the inner toothed carrier 260 in plan view, the shaft core 31 moves in each groove. Even so, the pinion gear 50 can continue to mesh with the internal gear 261 provided on the internal toothed carrier 260.

  As described above, when the distance between the roller portion 32 and the roller portion 42 is reduced, the roller portion 32 is pressed by the roller portion 42, and the code CD is held between the roller portion 32 and the roller portion 42. That is, in this embodiment, the coil spring SP also functions as a biasing member that constantly biases the roller portion 32 via the slider 20 so that the roller portion 32 is pressed against the roller portion 42. In the state where the code CD is sandwiched between the roller portion 32 and the roller portion 42, the roller portion 32 and the roller portion 42 are separated by the diameter of the code CD. For this reason, the case 10 </ b> A is positioned slightly rearward due to the structure of the first ceiling wall groove 16 and the second ceiling wall groove 17 and the structure of the first base groove 706 and the second base groove 707.

  Then, in the braking device 1000 in the steady state, it is assumed that a tension is applied to the cord CD in the direction of the arrow D1 (forward). Then, the roller portion 32 rotates counterclockwise and the roller portion 42 rotates clockwise by the frictional force generated between the cord CD. That is, when the tension transmission roller 30 including the roller portion 32 and the idle roller 40 including the roller portion 42 abut on the linearly extending cord CD, the cord CD can be rotated by moving the cord CD in the longitudinal direction. I can say that. Then, by the rotation of the roller portion 32, the pinion gear 50 that is fixed by sharing the same axis 31 also rotates (spins) in the same direction (counterclockwise) as the roller portion 32. At this time, as shown in FIG. 16B, the shaft core 31 and the shaft core 41 move forward in plan view, and the sandwiching guide slope 16a and the second ceiling of the first ceiling wall groove 16 of the case 10A. By being guided by the sandwiching guide slopes 17a of the wall groove 17 respectively, they are close to each other in the left-right direction, and the cord CD clamping force by the roller portion 32 and the roller portion 42 becomes stronger, and the roller portion according to the movement of the code CD. 32 comes to rotate reliably.

  When the roller portion 32 and the pinion gear 50 connected thereto rotate, the pinion gear 50 meshes with the internal gear 261 as shown in FIG. As a result, the internal gear 261 rotates (rotates) counterclockwise. As a result, the internal gear 261 and the internal toothed carrier 260 also rotate (revolve) counterclockwise, and the planetary gear 280 provided on the internal toothed carrier 260 likewise rotates (revolves) counterclockwise. Here, since the planetary gear 280 meshes with the sun gear 323 and the inner peripheral gear 115 fixed by the case 10A, the planetary gear 280 rotates counterclockwise while rotating in the opposite direction (clockwise) to the revolution direction. Will be. Therefore, the sun gear 323 that meshes with the planetary gear 280 inside the planetary gear 280 rotates (rotates) in the opposite direction (counterclockwise) to the rotation of the planetary gear 280. At this time, the rotation of the sun gear 323 is accelerated by the planetary gear 280. Thereby, the weight 340 held by the weight holder 320 with the sun gear rotating together with the sun gear 323 also starts to rotate. As already described, the inner peripheral gear 115 that meshes with the planetary gear 280 outside the planetary gear 280 does not rotate even when the planetary gear 280 rotates because the case 10A and the base 70 are fixed.

  Then, as shown in FIG. 16B, when the roller portion 32 and the roller portion 42 approach the limit (clamped state), the rotation of the roller portion 32 continues, but the roller portion 32 moves along the internal gear 261. Stops. At this time, the rotation of other members due to the rotation of the roller portion 32 is continued. Then, the weight 340 comes into contact with the inner peripheral wall of the case 10 </ b> A due to the centrifugal force, and a resistance force is generated against the rotation. That is, when the moving speed of the code CD is increased, the rotational speed is increased, thereby increasing the centrifugal force. As the centrifugal force increases, the weight 340 comes into stronger contact with the inner peripheral wall of the case 10A, and the resistance force increases. Thereby, the moving speed of the code CD (the falling speed of the solar radiation shielding member) can be suppressed. Here, when the tension applied to the cord CD is substantially constant (for example, in FIG. 18, when the solar radiation shielding member suspended so as to be lifted and lowered by the cord CD on the front side of the braking device 1000 falls freely) When the tension applied to the cord CD and the resistance force by the weight 340 and the inner peripheral wall of the case 10A balance, the moving speed of the cord CD becomes substantially constant. Therefore, the braking device 1000 functions as a rotary damper for the movement of the cord CD, and the solar radiation shielding member can be lowered slowly.

  FIG. 16 summarizes the rotation direction of each member (including the front-rear direction and the tightening direction in plan view) of the change in the clamped state from the steady state to the clamped state described above. (C).

  On the other hand, when tension is applied to the cord CD in the direction opposite to the arrow D1 (backward), the roller portion 32 and the roller portion 42 rotate in the opposite direction. As a result, the shaft core 31 and the shaft core 41 are moved away from each other by being guided by the release guide slope 16b of the first ceiling wall groove 16 and the release guide slope 17b of the second ceiling wall groove 17, respectively. Then, the clamping force of the roller part 32 to the cord CD is weakened, and the cord CD can be pulled with a weak force. Therefore, as shown in FIG. 18, when the braking device 1000 is provided in the head box, the direction in which the tension is applied to the cord CD in the front in FIG. The direction in which the tension is applied is preferably the direction in which the solar radiation shielding member is raised.

  Next, the movement of the slider 20 when the state changes between the steady state and the sandwiched state will be described with reference to FIG. FIG. 17A corresponds to FIG. 16A, and FIG. 17B corresponds to FIG.

  When the steady state of FIG. 17A changes to the clamped state of FIG. 17B, the shaft core 41 and the roller portion 42, and the shaft core 31 and the roller portion 32 are affected by the frictional force between the cord CD. Move forward in. At this time, since the shaft core 41 is in contact with the second top wall groove 27 and the second bottom wall groove 29, the second top wall groove 27 and the second bottom are moved along with the forward movement of the shaft core 41. A force is applied to the wall groove 29 forward. Further, since the shaft core 31 is in contact with the first top wall groove 26 and the first bottom wall groove 28, the first top wall groove 26 and the first bottom wall are moved along with the forward movement of the shaft core 31. A force is applied forward with respect to the groove 28. Therefore, when the shaft cores 31 and 41 move Δ forward, the slider 20 also moves Δ forward.

  In the present embodiment, the weight 340 is held by the weight holder 320 with sun gear, but the method of holding the weight 340 is not limited to this. For example, the weight 340 may be held by the internal toothed carrier 260. In this case, the planetary gear 280, the plate 300, and the weight holder 320 with sun gear can be omitted. By omitting the planetary gear 280, the speed increasing effect on the rotation of the sun gear 323, the weight holder with sun gear 320, and the weight 340 cannot be obtained.

4 <Sunlight shielding device>
Next, the aspect which applies the braking device 1000 which concerns on this embodiment to the horizontal blind which is a solar radiation shielding apparatus is demonstrated. FIG. 18 shows the solar shading device 100 in which the braking device 1000 is arranged in the head box 101.

  In the solar shading device 100 shown in FIG. 18, a plurality of slats 103 are suspended and supported from a head box 101 via a plurality of ladder cords 102, and a bottom rail 103 a is suspended and supported at the lower end of the ladder cords 102. Has been. Hereinafter, the slat 103 and the bottom rail 103a are collectively referred to as a shielding member 103.

  A plurality of support members (not shown) are disposed in the head box 101, and the tilt drum 104 is rotatably supported by the support members. An upper end portion of the ladder cord 102 is attached to the tilt drum 104, and a shaft 105 (shaft member) is fitted into all the tilt drums 104 at the center portion of the tilt drum 104. Accordingly, when the shaft 105 is rotated, all the tilt drums 104 are rotated. As the tilt drum 104 rotates, one of the warp threads of the ladder cord 102 is pulled up, so that each slat 103 and the bottom rail 103a are moved. The angle is adjusted in the same phase.

  An operating rod 106 made of a cylindrical body is suspended and supported at one end of the head box 101, and an operating portion 106 a is provided at the lower end of the operating rod 106. Then, when the operation rod 106 is rotated by holding the operation unit 106 a, the angle adjustment shaft is rotated via a gear mechanism disposed in the head box 101. Therefore, the angle of each shielding member 103 can be adjusted by rotating the operation rod 106.

  A plurality (three in the present embodiment) of cords CD (elevating cord CD) are suspended from the head box 101, and one end of each elevating cord CD is attached to the bottom rail 103a. A turning pulley (not shown) is pivotally supported on each support member by an axis in the front and back direction of the drawing, and an elevating cord CD introduced into the head box 101 can be turned and guided in the left-right direction of the head box 101. . Each support member has a space through which the other lifting / lowering cord CD can pass in the left-right direction. Then, the lifting / lowering cord CD is pulled out from the cord outlet 101a at the end of the head box 101 through the lock portion 107 and the braking device 1000 attached in the head box 101, inserted into the cylindrical operation rod 106, and the tip thereof. Is connected to a code equalizer 108 provided below the operation unit 106a. Therefore, when the code equalizer 108 is pulled downward and the lifting / lowering code CD is pulled out from the head box 101, the bottom rail 103a is pulled up, whereby each slat 103 is pulled up sequentially.

  2 and 4B, an attachment portion (attachment cylinder 702) for fixing the arrangement in the head box 101 is provided on the bottom surface of the braking device 1000 (outside the bottom surface of the base 70). And a mounting cylinder 702 is mounted on a mounting shaft (not shown) provided on the bottom surface of the head box 101. Thereby, the braking device 1000 can be stably arranged in the head box 101.

  As shown in FIG. 18, the braking device 1000 is disposed so as to be sandwiched between the mounting surface in the head box 101 and the shaft 105. That is, the slider 20 and the sandwiching members 30 and 40 are moved in the horizontal direction (left and right direction in FIG. 18) in the head box 101, and the rotation axis of the planetary gear 280 is oriented in the vertical direction in the head box 101. Placed in. At this time, the braking device 1000 is oriented in the front-rear direction (the left-right direction in the figure). When the cord equalizer 108 is pulled to lift the shielding member 103, the lifting / lowering cord CD is released and the cord equalizer 108 is released to release the shielding member 103. When lowering by its own weight, the lifting code CD is sandwiched. Further, the lock portion 107 is disposed in front of the braking device 1000 (left side in the figure).

Since the braking device 1000 is attached in such a direction, when the cord equalizer 108 is pulled downward in the state where the shielding member 103 has been lowered, that is, in the closed state of the solar radiation shielding device 100, the tension transmission roller 30 and the idle transmission roller 30 are idle. The roller 40 is separated and the cord CD can be pulled with a small resistance. On the other hand, in a state where the shielding member 103 has not been lowered, the code CD is released in a state where the code CD is not locked by the lock unit 107. Then, the shielding member 103 is lowered by its own weight, and the lifting / lowering cord CD is pulled toward the front of the braking device 1000. Then, as described with reference to FIG. 16 and the like, a braking force is applied to the code CD. Therefore, the descending speed of the shielding member 103 is suppressed. For this reason, it is possible to suppress damage or the like due to the descending speed of the shielding member 103 being exceeded.

5 <Action and effect>
The following operations and effects can be obtained by the assembly structure, the braking device, and the shielding device according to the present embodiment.
(1) Once the protrusion 230 of the slider 20 is introduced into the horizontal groove 114 of the case 10A, the protrusion 230 returns to the vertical groove 118 by the inclined portion 119 serving as a restricting means, and the slider 20 is prevented from being detached from the case 10A. can do. Therefore, even if the slider 20 moves to the connecting portion between the horizontal groove 114 and the vertical groove 118 against the urging force of the coil spring SP due to a sudden movement of the cord CD, the engagement between the protrusion 230 and the horizontal groove 114 is released. Thus, it is possible to prevent the slider 20 from malfunctioning.
(2) By holding the tension transmission roller 30 which is a movable pulley on the slider 20 having the above configuration, the tension transmission roller 30 can be stably operated.
(3) Since the restricting means is the inclined portion 119 formed by making the groove shallower upward, it can be easily assembled at the time of assembling the case 10A and the slider 20 with a simple configuration and once assembled. A structure that is not separated can be realized.

  As described above, according to the present invention, the assembly structure including the slider 20 (first member) and the case 10A (second member), the braking device including the assembly structure, and the solar radiation shielding device using the braking device are provided. It is provided and can be used in the field of daily necessities.

  In addition, this invention can be implemented also with the following aspects.

  Although the solar shading device 100 of the said embodiment was a horizontal blind provided with several slats, a solar shading device is not limited to this, For example, it is good also as a pleated curtain and a roll curtain by which curtain cloth is wound up.

  In the braking device 1000 of the above embodiment, the rotation of the tension transmission roller 30 is transmitted to the resistance applying unit, and rotational resistance is applied from the resistance applying unit. However, the roller is moved along with the movement of the code CD. The cord CD may be bent by moving, and a braking force may be applied to the cord CD by bending resistance.

  In the above embodiment, the slider 20 is biased by the coil spring SP as the biasing means. However, the slider 20 may be biased by a magnetic force. For example, as the biasing means, It is also possible to use a magnet attached to at least one of the case 10A and the slider 20.

  Moreover, in the said embodiment, as shown in FIG.9 and FIG.11 etc., as shown in FIG.9 and FIG.11 etc., the inclination part 119 which is a control means became the structure which covers the vertical groove | channel 118 completely, when it sees from upper direction. As long as the protrusion 230 does not return from the horizontal groove 114 to the vertical groove 118, the vertical groove 118 may not be completely covered, and there may be a slight gap.

  In addition, the protrusion of the slider 20 can be configured as a modified example as shown in FIGS. Specifically, in Modification 1 of FIG. 19A, the protrusion 230 is provided at a position shifted from left to right. In the first modification, the vertical groove 118 is also formed at a position shifted on the left and right, corresponding to the position of the protrusion 230. Next, the modification 2 of FIG.19 (b) is the structure which varied the number of protrusion 230 on right and left. In this case, in order to balance left and right, it is preferable to provide protrusions 230 alternately on the left and right. Also in this case, the number and position of the vertical grooves 118 are set according to the protrusions 230. Next, the modification 3 of FIG.19 (c) is an example in which the protrusion 230 is formed only in one side. In this case, on the side where no protrusion is provided, the entire upper edge 230 a has a function of supporting the slider 20. On the other hand, in Modification 4 of FIG. 19D, the configuration of the protrusion 230 itself is the same as that of the above embodiment, but only two protrusions at diagonal positions among the four protrusions support the horizontal groove 114. The structure is supported by the surface 114a. Even if it is the structure of these modifications 1-4, the structure which is not isolate | separated once assembled can be implement | achieved.

  Further, in the above embodiment, the restricting means for restricting the holding of the slider 20 from being released is the inclined portion 119, and the protrusion 230 gets over the inclined portion 119 using the elasticity of the member. It is also possible to adopt a configuration in which the protrusion 230 is introduced into the horizontal groove 114 by operating the leaf spring using the leaf spring.

  Furthermore, in the above embodiment, the slider 20 as the second member of the braking device 1000 is configured to move in the substantially horizontal direction that is the same as the direction in which the code CD moves in the head box 101 of the shielding device 100, and the first member The guide portion of the case 10A as a horizontal groove 114 extending in the horizontal direction and the introduction means for introducing the slider 20 into the guide portion are formed as a vertical groove 118 extending in a substantially vertical direction. The direction of movement of the member and the direction of the introduction means (that is, the direction of introduction of the second member) are not limited to these directions. For example, when the braking device 1000 according to the above embodiment is mounted by being rotated 90 degrees around the axis in the direction in which the head box 101 extends (at this time, the shaft core 31 of the tension transmission roller 30 is in the horizontal direction), the guide portion Both the groove corresponding to and the groove corresponding to the introducing means extend substantially in the horizontal direction, and such a configuration is also included in the scope of the present invention.

  In the above embodiment, the guide portion (horizontal groove 114) and the introducing means (vertical groove 118) are connected at an angle of about 90. However, the present invention is not limited to this, and the connection is made at an arbitrary angle. It's okay. In addition, when it is set as the structure which introduce | transduces a 2nd member into a guide part against gravity, a 2nd member will be urged | biased by two forces, the urging | biasing force by gravity and an urging | biasing means. In such a case, the urging direction by the urging means is preferably a direction other than the gravity direction.

  In the above embodiment, the assembly structure including the first member and the second member is an assembly structure including the slider 20 (first member) and the case 10A (second member). The apparatus has been described. However, the invention according to the present application is not limited to the above configuration, and can be applied to various assembly structures including a certain member and a second member that can move relative to the member.

10A: Case (first member), 20: Slider (second member), 114: Horizontal groove (guide portion), 118: Vertical groove (introducing means), 119: Inclined portion (regulating means), SP: Coil spring ( Energizing means)

Claims (11)

An assembly structure including a first member and a second member movable relative to the first member,
The first member includes a guide part that slidably holds the second member, and introduction means that introduces the second member to a specific position of the guide part,
An urging means for urging the second member in a state of being held by the guide portion; and a regulating means for restricting the holding of the second member from being released at the specific position;
The urging means urges the second member in a direction away from the specific position.   The assembly structure of claim 1, wherein the second member comprises a movable pulley.   The assembly structure according to claim 1 or 2, wherein the biasing means is a spring that biases the second member.   The introduction means is configured to introduce the second member into the guide portion against gravity, and the biasing means is configured to bias the second member in a direction other than the vertical direction. The assembly structure according to claim 3.   The assembly structure according to any one of claims 1 to 4, wherein the first member is a case that covers the second member, and the second member is a slider that slides in the case.   6. The assembly structure according to claim 5, wherein the case includes the guide portion and the restricting means on at least one side in a width direction substantially perpendicular to the biasing direction of the biasing member. The slider includes a protrusion protruding at least one side in the width direction,
The assembly structure according to claim 6, wherein the protrusion is supported by the guide portion so that the slider is supported in a state where the bottom portion is floated. The introduction means is a groove extending upward;
The restricting means is formed by making the groove of the introducing means shallow upward.
The slider is configured to be introduced into the guide portion through the groove when the case is expanded in the width direction or the slider is narrowed in the width direction. Assembly structure. A braking device comprising a pair of clamping members for clamping a cord and braking the movement of the cord in the longitudinal direction, comprising the assembly structure according to any one of claims 5 to 8. ,
The braking device, wherein the slider holds at least one of the pair of narrowing members, and the pair of narrowing members clamps the cord when the slider moves in a biasing direction of the biasing member. At least one of the pair of narrowing members is a rotating body that can be rotated along with the movement of the cord in the longitudinal direction, and the braking device further includes a resistance applying unit that provides rotational resistance to the rotating body,
As the slider moves in one direction along the longitudinal direction of the cord, the slider moves in the biasing direction of the biasing means, and the rotation of the rotating body is transmitted to the resistance applying portion.
The transmission to the resistance applying portion of the rotating body is released by the slider moving against the urging force of the urging means as the cord moves in the other direction along the longitudinal direction of the cord. Item 10. The braking device according to item 9. A braking device according to claim 9 or 10, and a shielding member suspended so as to be lifted and lowered by movement of the cord,
The braking device brakes the movement of the cord by moving the slider in the urging direction of the urging member when the shielding member descends, and attaches the slider when the shielding member is raised. A shielding device configured to release the braking of the movement of the cord by moving in a direction against the urging force of the urging means.