TWI723218B - Braking device and shielding device using the braking device - Google Patents

Abstract

The present invention provides a braking device that can properly clamp the rope even when the diameter of the clamping body that clamps the rope is reduced due to wear or the diameter of the lifting rope is reduced; the provided braking device is A braking device for braking the movement of the rope in the longitudinal direction has a clamping body provided with a pair of clamping members for clamping the rope, and at least one of the clamping members is configured to follow a predetermined movement trajectory When moving, the gripping body grips the rope at a predetermined gripping position of the movement trajectory, and the movement trajectory extends beyond the gripping position.

Description

Braking device and shielding device using the braking device

The present invention relates to a braking device and a shielding device using the braking device, and more particularly to a braking device that can be used in order to appropriately slow down the movement of the lifting rope.

Not only roller blinds and blinds, such as accordion curtains, pleated nets, and partitions, which are semi-automatic suspension-supported shading devices are also being used. For example, when the horizontal blind is opened, the blade and the lower beam as the shielding member are hoisted by pulling the operation cord. In addition, when the horizontal blinds are closed, the weight of the blades and the lower beam is generally used to lower the blades and the lower beam by gravity. At this time, it is known that there is a structure that applies a braking force to the lifting rope that moves along with the descending of the blades and the lower beam, thereby reducing the force of the blade and the lower beam to descend.

Patent Document 1 discloses an elevating device for shutters with a damper, which is characterized in that the damper is composed of a centrifugal governor that generates a braking force and a shaft (holding body that holds the rope) connected to the brake section. , The lifting rope is in contact with the outer peripheral surface of the shaft, and through the movement of the lifting rope, the shaft rotates and the stopper part operates. By using this damper, it is possible to reliably provide resistance to the movement of the lifting rope accompanying the drop in its own weight.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Publication, JP 2005-030084

However, in the damper disclosed in Patent Document 1, in the case where the holder body is worn due to friction with the lifting rope and the diameter of the holding body is reduced, or the diameter of the lifting rope is reduced, it cannot be appropriately Give resistance to the rope.

The present invention has been completed in view of the above circumstances, and provides a brake device capable of holding the rope appropriately even when the diameter of the holding body for holding the rope is reduced due to wear or the diameter of the lifting rope is reduced.

According to the present invention, there is provided a braking device for braking the movement of the rope in the longitudinal direction. The braking device has a clamping body provided with a pair of clamping members for clamping the rope. At least one of them is configured to move along a predetermined movement trajectory, the gripping body grips the rope at a predetermined gripping position of the movement trajectory, and the movement trajectory extends beyond the gripping position.

According to the present invention, at least one of the clamping members is configured to move along a predetermined movement trajectory, so that the rope can be clamped at a predetermined clamping position, and the movement trajectory extends beyond the clamping position. With this configuration, the rope is clamped at a predetermined clamping position before the clamping body is worn, and after the clamping body is worn, the clamping body moves to a range on the movement trajectory extending beyond the specified clamping position, even when the clamping body is worn out. Even after the clamping body is worn, the rope can be properly clamped to maintain the braking performance. In addition, the same effect can be exerted even when the diameter of the rope becomes thin due to the abrasion of the rope.

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

Preferably, the movement track extends in a direction toward the rope.

Preferably, the movement trajectory is a movement trajectory of at least one of the clamping members along a restriction groove, wherein the restriction groove restricts the movement of at least one of the clamping members.

Preferably, the braking device has a housing that includes at least one of the clamping members inside and is provided with the restriction groove.

Preferably, the clamping body is composed of a first clamping member and a second clamping member, the first clamping member has a shaft, and the restricting groove is such that the shaft can be approached relative to the rope It is formed that the clamping position is a position away from the end of the restriction groove on the approaching direction side with respect to the rope.

Preferably, the pair of clamping bodies all move along the movement track, and the movement track is formed in such a way that the extension lines thereof cross each other.

Preferably, the second clamping member has a shaft, and the restriction groove is configured to move along the restriction groove through the shafts of the first clamping member and the second clamping member, so that it can be clamped in a predetermined The holding position clamps the rope.

Preferably, there are two restriction grooves formed in the housing, and at least one is arc-shaped.

Preferably, the two restricting grooves are formed in an inclined manner with respect to the moving direction of the rope.

Preferably, the two restriction grooves have different curvatures.

Preferably, the shaft is arranged in a substantially vertical direction.

Preferably, the second clamping member is constituted by a clamping plane.

Preferably, the clamping plane is a plane fixed before and after the movement of the first clamping member.

Preferably, the brake device has an urging member that urges the first clamping member from a release position where the rope is released to a clamping position where the rope is clamped.

Preferably, the braking device has a guide wall formed along the edge of the restricting groove.

Preferably, a shielding device is provided, which includes the braking device described in any one of the above, and a shielding member suspended in a manner capable of being raised and lowered by the movement of the rope.

Preferably, there is provided a shielding device comprising: a braking device in which the second clamping member is composed of a clamping plane, a shielding member suspended in a manner capable of being raised and lowered by the movement of the rope, and a The braking device is included in the inner upper beam; the clamping plane is the bottom surface of the upper beam.

10A: Shell

11: Top wall

12b: Rear side wall

12f: Front wall part

12l: left side wall

12r: right wall

13: Flange

13C: Cylinder

16: first top wall groove

16a: Clamping guide slope

16b: Release guide ramp

16c: clamping side limit surface

16d: Release side restriction surface

17: second top wall groove

17a: Clamping guide slope

17b: Release guide ramp

17c: clamping side limit surface

17d: Release side restriction surface

19: Snap hole

31, 41: Axle

31B: Rotation axis

31C: Guide shaft

31Ca: Guide groove

31Cb: Torsion spring

32A: Grab roller

32B: Grab roller

42A: inner cylinder

42Ab: Spring component

50: pinion

70: Pedestal

92: Pillar

93: storage space

94: endless belt

95: output shaft

101: Multi-layer solar shading parts

102: Lifting rope

104: Locking part

108: operation stick

109: Handle

110: window frame

111A: The first engagement slot

111B: second engagement slot

112: Lid

113: Guide groove

114: support slot

115: inner gear

116: Wave part

117: Split Level

118: Groove

119A: first side wall hole

119a: Clamping guide surface

119b: Release guide ramp

119c: clamping side limit surface

119d: Release side restriction surface

120: Operation Department

121: Rope Balancer

122: lower beam

123: Direction control rope

124: Axis

130: upper beam

131: top surface

132: Bottom

132s: clamping plane

133: side

134: box cover

135: Rope Export

150: spring

160: fixed shaft

170: connecting parts

200: Arrange parts

201: The first front slot

201A: First front rope insertion part

202A: Second front rope insertion part

203A: The first rear rope insertion part

204A: Second rear rope insertion part

202: second front slot

203: first rear slot

204: second rear slot

205: front wall

206: rear wall

207: right wall

209: Claw

210: split level

220: Slider

221: top wall

222: Rear side wall

223: Bottom Wall

224: front wall part

225: Through hole

226: first top wall groove

227: second top wall groove

228: first bottom wall groove

229: second bottom wall groove

230: protrusion

231: Concave

240: Knurled roller

240A: Outer cylinder

260: Gear carrier with internal teeth

261: Internal Gear

261B: Transmission gear

262: Flange

263: Support shaft

280: Planetary gear

280B: Speed-increasing gear

300: plate

320: Balance weight bracket with sun gear

321: Convex

322: Concave

323: Sun Gear

324: Ring

341: Prominence

440B: Shell

441A: Fixed part

701A: The first engaging board part

701B: The second clamping plate part

702: installation tube

706: first base slot

706A: The first guide wall

707: second base slot

707A: Second guide wall

708: Cylindrical part

720: Linkage

721, 722: connecting plate

723: Axis

724, 725: connecting pin

726: Torsion Spring

820: mobile shell

821: support slot

822: Parallel plate

823: Guide Groove

824: Long Hole

830, 840: grab roller

830A: inner cylinder

830B: Outer cylinder

850: guide shaft

900: Rope-shaped parts

CD: Rope

DT: Motion conversion part

RA: Resistance imparting part

FIG. 1 is a diagram showing an example of a shielding device 100A according to the first embodiment of the present invention.

Fig. 2 is an exploded perspective view of the brake device 1000 according to the first embodiment of the present invention, (a) is a view viewed from the upper front side, and (b) is a view viewed from the upper rear side.

Fig. 3 is an exploded perspective view of the brake device 1000 according to the first embodiment of the present invention, (a) is a view viewed from the lower front side, and (b) is a view viewed from the lower rear side.

4 is an assembly diagram of the brake device 1000 of the first embodiment of the present invention, (a) is a front perspective view, (b) is a rear perspective view, and (c) is a left side view.

Fig. 5 is an assembly diagram of the brake device 1000 according to the first embodiment of the present invention, (a) is a top view, and (b) is a bottom view.

Fig. 6 is an assembly view after removing the housing 10A from the brake device 1000 of the first embodiment of the present invention, (a) is a front perspective view, and (b) is a rear perspective view.

FIG. 7 is an assembly view after further removing the slider 220 from FIG. 6, (a) is a front perspective view, and (b) is a rear perspective view.

FIG. 8 is an assembly view after further removing the gear carrier 260 with internal teeth from FIG. 7, (a) is a front perspective view, and (b) is a rear perspective view.

9 is a cross-sectional view showing the positional relationship of the knurled roller 240, the slider 220, and the pinion gear 50 of the first embodiment of the present invention, and is a cross-sectional view through the approximate center of the shaft core 31 when viewed from the left side of the brake device 1000 Part of it.

FIG. 10 is a diagram showing the arrangement member 200 according to the first embodiment of the present invention, (a) is a perspective view, and (b) is a front view.

FIG. 11 is a diagram showing the housing 10A of the first embodiment of the present invention, (a) is a front perspective view, and (b) is a rear perspective view.

FIG. 12 is a diagram showing the housing 10A of the first embodiment of the present invention, (a) is a plan view, and (b) is a perspective view viewed from the lower side.

13 is a diagram showing the slider 220 according to the first embodiment of the present invention, (a) is a front perspective view, (b) is a rear perspective view viewed from the lower side, and (c) is a plan view.

14 is a diagram showing the housing 10A and the slider 220 of the first embodiment of the present invention, (a) is a perspective view viewed from the lower side, and (b) is a perspective view viewed from the upper side.

FIG. 15 is an exploded perspective view showing the components other than the housing 10A and the slider 220 according to the first embodiment of the present invention.

Fig. 16 is a cross-sectional view of a cut portion taken along the line A-A in Fig. 4(c).

Fig. 17 is a cross-sectional view of a cut portion taken along line B-B in Fig. 5(a).

Fig. 18 is a diagram showing the state of braking the rope CD by the braking device 1000 of the present invention using Fig. 16, (a) is a state where no tension is applied to the rope CD (normal state), (b) is a tension applied to the rope CD, And the state where the cord CD is clamped by the knurling roller 240 and the roller part 42 (clamping state), (c) is a summary drawing of the rotation direction of each member when changing from the state (a) to the state (b).

FIG. 19 is a diagram showing the moving state of the slider 220 corresponding to FIG. 18.

Fig. 20 is a diagram for explaining a predetermined nip position in the initial state (before abrasion) of the nip body (roller portion 42) and a nip position after abrasion.

21 is a diagram showing the components used in the motion conversion part of the second embodiment of the present invention, (a) shows a state in which the knurled roller 240 and the roller part 42 are connected by a sheet 800, and (b) shows a rope-like member 900 A state where the knurled roller 240 and the roller portion 42 are connected.

Fig. 22 is a schematic diagram of a state in which the member of Fig. 21(b) clamps the cord CD viewed from the direction of arrow Z.

Fig. 23 is a diagram showing a state where the rope CD is braked by the movement conversion part of the second embodiment of the present invention, (a) is a diagram showing a free movement state, and (b) is a diagram showing a clamping state.

Fig. 24 is a diagram showing a state where the rope CD is braked by another motion conversion part of the third embodiment of the present invention, (a) is a diagram showing a free movement state, and (b) is a diagram showing a clamping state.

Fig. 25 is a diagram for explaining the movement conversion portion of the fourth embodiment of the present invention, (a) is a diagram showing a freely moving state, and (b) is a diagram showing a gripping state.

Fig. 26 is a diagram for explaining a motion conversion portion of a modification of the fourth embodiment of the present invention, (a) is a diagram showing a freely moving state, and (b) is a diagram showing a clamping state.

FIG. 27 is a diagram for explaining the movement conversion portion of a modification of the fourth embodiment of the present invention, and is for explaining that the rope can be clamped appropriately even when the diameter of the knurled roller 240 is reduced due to wear A diagram of the status of the CD.

Fig. 28 is a perspective view of a brake device 5000 according to a fifth embodiment of the present invention.

FIG. 29 is a plan view of the braking device 5000.

Fig. 30 is a front view of the braking device 5000, (a) is a diagram showing a clamping state, and (b) is a diagram showing a released state.

Fig. 31 is a cross-sectional view taken along the line P-P in Fig. 30.

Fig. 32 is a diagram showing a state where the inner cylinder 42A is pressed into the outer cylinder 240A, (a) is a state before being pressed, and (b) is a state after being pressed.

FIG. 33 is a diagram showing an example in which an elastic portion 42Aa is provided on the surface of the inner cylinder 42A.

FIG. 34 is a diagram showing an example in which a spring member 42Ab is provided in the inner cylinder 42A.

FIG. 35 is a diagram showing a brake device 5100 according to the first modification of the fifth embodiment of the present invention.

36 is a diagram showing a brake device 5200 of a second modification of the fifth embodiment of the present invention, (a) is a diagram showing a clamping state, and (b) is a diagram showing a released state.

Fig. 37 is a cross-sectional view taken along the line F-F in Fig. 36.

38 is an explanatory diagram showing a brake device 5300 of the third modification of the fifth embodiment of the present invention, (a) shows a state in which the clamp body clamps the cord CD, (b) shows the clamp of the cord CD by the clamp body Hold the released state.

Fig. 39 is a cross-sectional view when the brake device 5300 of Figs. 38(a) and (b) is cut along the line J-J in the same figure.

Fig. 40 is a cross-sectional view of the brake device 5300 of Figs. 38(a) and (b) cut along the line K-K in the same figure.

FIG. 41 is a schematic perspective view showing the clamping body and the link mechanism 720 of the brake device 6000 according to the sixth embodiment of the present invention.

FIG. 42 is a cross-sectional view of FIG. 16 in order to show a state in which the clamp body of the brake device 6000 of FIG. 41 and the link mechanism 720 are combined in the motion conversion portion DT of the first embodiment, and the clamp is described and schematically shown in the cross-sectional view of FIG. 16 The top view of the holding body and the link mechanism 720.

Fig. 43 is a diagram showing a state in which the brake device 6000 of Fig. 41 brakes the rope CD, (a) shows the state in which the clamping body clamps the rope CD, and (b) shows the clamping body of the rope CD by the clamping body The state of being lifted.

Fig. 44 is a diagram for explaining another mounting position of the brake device according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the braking device of the present invention and the shielding device using the braking device will be described in detail with reference to the drawings.

1. The first embodiment

1-1 <Overall composition>

In the shielding device 100A shown in FIG. 1, the multi-layer solar shielding member 101 is suspended and supported on a hollow upper beam 130 via a plurality of direction control ropes 123, and a lower beam 122 is suspended and supported at the lower end of the direction control rope 123. The upper beam 130 is composed of a top surface 131, a bottom surface 132 and a side surface 133. Moreover, at both ends of the upper beam 130, A box cap 134 is provided. In addition, a cord outlet 135 for inserting the cord CD into the operating rod 108 is provided inside the upper beam 130. The directional control rope 123 is not limited as long as it is a member capable of supporting and rotating the solar shielding member 101. For example, it may be configured to include two longitudinal ropes separated from each other, one of which is mounted on one of the blades. On the side edge, another longitudinal rope is installed on the other side edge of the blade.

A plurality of support members (not shown) are arranged in the upper beam 130, and a tilt roller (not shown) is rotatably supported on the support members. The upper end of the direction control rope 123 is installed on the inclined roller, and all the inclined rollers have a shaft 124 (shaft member) inserted in the center of the inclined roller. Therefore, when the shaft 124 rotates, all the inclined drums are rotated, and along with the rotation of the inclined drum, one of the longitudinal ropes of the direction control rope 123 is pulled up, whereby each solar radiation shielding member 101 and the lower beam 122 are Adjust the angle in the same phase.

An operating rod 108 composed of a cylindrical body is suspended and supported on one end of the upper beam 130, and an operating portion 120 is provided on the lower end of the operating rod 108. When the gripping operation portion 120 rotates the operation rod 108, the angle adjustment shaft is rotated via a gear mechanism arranged in the upper beam 130. Therefore, it is possible to adjust the angle of each solar radiation shielding member 101 by the rotation operation of the operating rod 108.

A plurality of (three in this embodiment) lifting ropes 102l, 102c, 102r are suspended from the upper beam 130 (only referred to as "lifting rope 102" if no distinction is required), and one end of each lifting rope 102 is installed on the lower beam 122 on. The steering pulley (not shown) is rotatably supported (shaft supported) on each support member with a shaft core in the front and back directions of the figure. The lifting rope 102 guided into the upper beam 130 can guide the steering in the left and right direction of the upper beam. . In addition, each support member has a space that allows other lifting ropes to pass in the left-right direction. Therefore, the other end of the lifting rope 102r at the right end is guided and turned by the supporting member, and the lifting ropes on the non-operating side (the lifting ropes 102l and 102c at the left and center) are guided in the direction of the operating rod 108 in the upper beam 130 through the supporting members. guide. Next, it passes through the locking portion 104 and the braking device 100 provided in the upper beam 130, is inserted into the cylindrical operating rod 108, and its tip is connected to the rope balancer 121 provided below the operating portion 120. therefore, When the rope balancer 121 is pulled downward and the lifting rope 102 is pulled out from the upper beam 130, the lower beam 122 is lifted to pull up the solar radiation shielding member 101.

The lock unit 104 permits or restricts the movement of the cord CD in accordance with the movement of the cord CD (refer to FIG. 4).

The braking device 1000 is a device for braking the movement of the rope CD. In addition, the structure and operation of the brake device 1000 will be described later. The braking device 1000 is disposed on the bottom surface 132 of the upper beam 130, and its two ends are positioned by the side surfaces 133. In addition, instead of disposing the braking device 1000 on the bottom surface 132, the braking device 1000 may be disposed on another member provided on the bottom surface 132.

The brake device 1000 is arranged in the upper beam 130 such that the front side is toward the lock portion 104 side, and the rear side is toward the rope outlet 135 side as shown in FIG. 4. Therefore, in a state where the solar radiation shielding member 101 is completely lowered, that is, in a closed state of the shielding device 100A, when the set of cords CD is pulled downward, the cords CD are pulled to the rear as shown in FIG. 4.

On the other hand, in a state where the solar shielding member 101 is not completely lowered, the cord CD is released in a state where the cord CD is not locked by the locking portion 104. Then, the solar radiation shielding member 101 is lowered by its own weight. Thereby, the lifting rope 102 is pulled out from the upper beam 130. Therefore, the cord CD connected to the lifting cord 102 is pulled toward the front of the braking device 1000. Then, a braking force is applied to the rope CD. Therefore, the descending speed of the solar radiation shielding member 101 is suppressed. Therefore, it is possible to suppress damage or the like caused by the descending speed of the solar radiation shielding member 101 exceeding a certain limit. In addition, this operation will be described in detail with reference to FIG. 18 described later.

As described above, according to the shielding device 100A of the present embodiment, since the braking member 1000 is used to appropriately apply braking force to the movement in the longitudinal direction of the cord CD capable of raising and lowering the solar radiation shielding member 101, even when the solar radiation shielding member 101 is used, for example, Even when the component 101 is lowered by its own weight, the descending speed of the solar shielding component 101 can be suppressed.

1-2<brake device>

Next, the braking device 1000 will be described with reference to FIGS. 2 to 22. The brake device 1000 of this embodiment is a brake device that brakes the movement of the rope CD. Specifically, the braking device 1000 of this embodiment It is arranged such that the mechanism of the motion conversion part and the mechanism of the resistance imparting part are located in a substantially vertical position. In this embodiment, the movement conversion unit is a mechanism that converts the movement of the cord CD into the movement of other parts. In addition, the resistance imparting unit is a mechanism that generates resistance along with the movement of the cord CD when the cord CD relatively moves in one direction. Here, in this embodiment, the slider 220, the coil spring SP, the idler roller 40, the knurled roller (roulette) 240, the pinion gear 50, the shaft core 31, the washer 241, the gear carrier 260 with internal teeth, and the planet The gear 280 constitutes a motion conversion part, the balance weight 340, the balance weight support 320 with sun gear, and the housing 10A constitute a resistance imparting part, and the idler roller 40 is constituted by a shaft core 41 and a roller part 42.

2 and 3 are exploded perspective views of the brake device 1000 of this embodiment. The brake device 1000 is composed of the following components: that is, an arrangement member 200, a housing 10A, a slider 220, a coil spring SP, an idler roller 40 composed of a shaft core 41 and a roller portion 42, a knurled roller 240, a pinion 50, The shaft core 31 inserted through the knurled roller 240 and the pinion 50, the washer 241, the gear carrier 260 with internal teeth, the planetary gear 280, the plate 300, the balance weight bracket 320 with sun gear, the balance weight 340, and the base 70.

In this embodiment, the idler roller 40 and the knurled roller 240 are a pair of clamping members (first clamping member and second clamping member) that clamp the rope, and they function as clamping bodies by cooperating with each other. . In addition, the idler roller 40 functions as a support column, and the knurled roller 240 functions as a roller that rotates by the movement of the rope in the longitudinal direction. In addition, the slider 220 holds the idler roller 40 and the knurled roller 240. In addition, the housing 10A and the base 70 are formed of, for example, resin.

As shown in FIGS. 2 and 3, in this embodiment, four planetary gears 280 are provided on the gear carrier 260 with internal teeth, and eight balance weights 340 are held on the balance weight support 320 with sun gears. Hereinafter, each component will be described.

1-2-1<arrangement part 200>

As shown in Figs. 4(a) and (b), the arrangement member 200 is a member for inserting the cord CD and making the direction of the cord CD even. In addition, it is a member in which a plurality of cords CD are aligned in order to face each other in the same direction. The arrangement member 200 may be formed of, for example, a resin such as plastic. Here, as shown in Figure 4(a), the direction of the arrow is used as the front Back, left and right, up and down. That is, the direction in which the distance between the first ceiling wall groove 16 and the second ceiling wall groove 17 is narrowed is defined as the front, and the left-right direction (width direction) and the vertical direction are determined.

As shown in FIG. 10(a), the arrangement member 200 has: a front wall 205, a right wall 207 and a left wall 208 connected to the front wall 205, and a right wall 207 and a left wall 208 connected to each other.后后壁部206。 The back wall 206. The shapes of the front wall portion 205, the right side wall portion 207, the left side wall portion 208, and the rear wall portion 206 are arbitrary shapes, and are each provided in a substantially rectangular shape in this embodiment. In addition, in this embodiment, the front wall portion 205 and the rear wall portion 206 have a substantially symmetrical shape.

A first front groove 201, a first front rope insertion portion 201A, a second front groove 202, and a second front rope insertion portion 202A are formed in the front wall portion 205. In addition, a first rear groove 203, a first rear rope insertion portion 203A, a second rear groove 204, and a second rear rope insertion portion 204A are formed in the rear wall portion 206.

The first front cord insertion portion 201A and the second front cord insertion portion 202A are members for inserting the cord CD into the arrangement member 200 after the brake device 1000 is assembled. The first front cord insertion portion 201A is formed to be wider than the first front groove 201. In addition, the second front cord insertion portion 202A is formed to be wider than the second front groove 202. Therefore, by inserting the cord CD into the first front cord insertion portion 201A and the second front cord insertion portion 202A, and sliding the cord CD in the direction of the first front groove 201 and the second front groove 202 as it is, it is possible to smoothly Insert the cord CD.

In addition, the first rear cord insertion portion 203A and the second rear cord insertion portion 204A are used to pass the cord CD inserted into the front wall portion 205 through the through holes 225 (see FIG. 13) at the front and rear of the slider 220 described later, and The cord CD is pulled out from the rear wall portion 206 to the outside member. The first rear cord insertion portion 203A is formed to be wider than the first rear groove 203. In addition, the second rear cord insertion portion 204A is formed to be wider than the second rear groove 204. Therefore, by inserting the cord CD into the first rear cord insertion portion 203A and the second rear cord insertion portion 204A, and keeping the cord CD sliding in the direction of the first rear groove 203 and the second rear groove 204, it is possible to smoothly Insert the cord CD.

In addition, the shapes of the first front rope insertion portion 201A, the second front rope insertion portion 202A, the first rear rope insertion portion 203A, and the second rear rope insertion portion 204A are arbitrary shapes and are not limited to the shapes shown in FIG. 10. For example, it may be substantially circular, or it may be connected to the first front groove 201 (the same applies to other grooves) after passing through an oblique shape from a longitudinal shape. Furthermore, in this embodiment, a staggered layer 210 is provided between the first front rope insertion portion 201A and the first front groove 201, but the staggered layer 210 may not be provided, and the front wall portion 205 (or the rear wall portion 206 ) Is set to a roughly rectangular shape.

As shown in FIG. 10(b), in this embodiment, the front wall part 205 and the rear wall part 206 have substantially the same shape in front view. Therefore, the cord CD inserted from the first front cord insertion portion 201A passes through the first rear cord insertion portion 203A, and the cord CD inserted from the second front cord insertion portion 202A passes through the second rear cord insertion portion 204A. In other words, the first front groove 201 and the first front rope insertion portion 201A, the first rear groove 203 and the first rear rope insertion portion 203A are a pair of grooves respectively corresponding to each other, and the second front groove 202 and the second front rope insertion portion 202A The second rear groove 204 and the second rear rope insertion portion 204A are a pair of grooves respectively corresponding to each other.

Here, as shown in FIG. 10(a), a claw portion 209 is provided on the right side wall portion 207 of the arrangement member 200, and the claw portion 209 is used to cover the arrangement member from above the housing 10A during assembly of the brake device 1000 When the 200 is integrated, it engages with an engagement hole 19 (see FIG. 11) of the housing 10A described later to fix the arrangement member 200 to the housing 10A. In addition, although not shown in FIG. 10, the same claws 209 are provided on the inner surface of the left side wall 208 so as to face each other. Thereby, it is possible to allow the housing 10A to enter while the right side wall portion 207 and the left side wall portion 208 are elastically deformed outwards, and the two claw portions 209 provided on the arranging member 200 are similar to those provided on the left and right sides of the housing 10A. The two engaging holes 19 are elastically engaged.

1-2-2<Shell 10A>

Next, the housing 10A will be described using FIGS. 11(a), (b), and FIG. 12. In addition, in FIG. 12, the description will be given below with the heading to the left as the front, the right as the rear, the upward as the right side, and the downward as the left side. The housing 10A and the base 70 constitute a frame body, and the following components are held inside: that is, the slider 220, the coil spring SP, the idle roller 40 composed of the shaft core 41 and the roller portion 42, and the knurled roller 240, pinion gear 50, shaft core 31, washer 241, gear carrier 260 with internal teeth, planetary gear 280, plate 300, balance weight support 320 with sun gear, and balance weight 340.

In addition, the housing 10A is a member that constitutes the frame of the brake device 1000 together with the base 70 shown in FIG. 15, for example. In addition, the housing 10A is a member that constitutes a resistance imparting section together with the weight holder 320 with sun gear and the weight 340 shown in FIG. 15, for example.

As shown in FIG. 11, as the main configuration, the housing 10A includes the following parts: namely, a top wall portion 11 having a substantially square outer shape, a front side wall portion 12f, and a right side wall connected to the front side wall portion 12f and the top wall portion 11 12r and the left side wall 12l, the rear side wall 12b connected to the right side wall 12r and the left side wall 12l, respectively, opposite the top wall 11 and from the front side wall 12f, the rear side wall 12b, the right side wall 12r and the left side wall The flange portion 13 extending toward the radial side of the portion 121, the cylindrical portion 13C connected to the flange portion 13, and the lid portion 112 connected to the cylindrical portion 13C.

Guide grooves 113 are formed in the front side wall portion 12f and the rear side wall portion 12b. The two guide grooves 113 are opposed to each other in the front-rear direction. These guide grooves 113 are grooves for inserting the cord CD in the front-rear direction. Here, the number of the cords CD inserted through the guide groove 113 is not particularly limited, and in this embodiment, an example in which three cords CD are inserted in the longitudinal direction is shown (see FIG. 4).

In addition, engagement holes 19 are provided in the right side wall 12r and the left side wall 12l. The engagement hole 19 is a member that engages with the claw portion 209 of the alignment member 200 and fixes the alignment member 200 to the housing 10A as described above.

Furthermore, support grooves 114 are provided above the left and right engagement holes 19. The support groove 114 is a member for supporting the protrusion 230 provided on the slider 220 when the housing 10A holds the slider 220 inside, as shown in FIG. 4. Thereby, the slider 220 can be supported in a floating state. In addition, the details will be described later.

A first top wall groove 16 and a second top wall groove 17 are formed in the top wall portion 11. As shown in FIG. 12(a), 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 cord CD, that is, the front-rear direction, and as they move toward one side of the longitudinal direction of the cord CD , That is, the front, the first top wall groove 16 The distance from the second top wall groove 17 becomes smaller. That is, the first top wall groove 16 is formed in an arc shape, and the inner peripheral surface is formed by the clamping guide slope 16a, the release guide slope 16b, the clamping side restriction surface 16c, and the release side restriction surface 16d. The arc of the first top wall groove 16 is formed to be concentric with the inner peripheral surface of the gear carrier 260 with internal teeth shown in FIG. 7 when viewed from above.

On the other hand, the second top wall groove 17 is formed in a shape that draws a gentle curve, and an inner peripheral surface is formed by the clamping guide slope 17a, the release guide slope 17b, the clamping side restriction surface 17c, and the release side restriction surface 17d. Specifically, in the second ceiling wall groove 17, the front side is formed in a substantially linear shape, and is curved in a direction away from the first ceiling wall groove 16 as it goes to the rear. This is to prevent the following situation: that is, in the case where the second ceiling wall groove 17 is formed in a substantially linear shape, since the first ceiling wall groove 16 is approaching from the rear to the front and approaching an arc like the cord CD, For example, when the shaft core 31 and the shaft core 41 move along the first top wall groove 16 and the second top wall groove 17 respectively, the displacement of the shaft core 31 and the shaft core 41 in the vertical direction relative to the rope CD is different. That is, this is because when one side is a circular arc and the other side is a substantially straight line, the vertical distance to the rope CD in the front-rear direction is different. In this way, by making the displacements of the shaft core 31 and the shaft core 41 in the vertical direction with respect to the cord CD approach, the knurled roller 240 and the roller portion 42 can appropriately clamp the cord CD. In addition, 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 bent toward the cord CD side. Thereby, the displacement of the axial core 31 and the axial core 41 with respect to the vertical direction of the rope CD can be made substantially the same, and the abrasion of the rope CD can be reduced.

Here, in the second embodiment, not only the vertical displacement of the shaft core 31 and the shaft core 41 with respect to the rope CD is made the same as possible, but also the interaction caused by the movement of other parts etc. is taken into consideration. The shape shown in Fig. 12(a) is changed. Here, in this embodiment, it can be said that the first ceiling wall groove 16 and the second ceiling wall groove 17 have different curvatures from each other.

The edge of the first top wall groove 16 is shown in Figure 11 (a), (b), and Figure 12 (a). When the housing 10A is viewed from above, the first top wall groove 16 is along the outer edge of the housing 10A. A first guide wall 16A protruding upward from the first top wall groove 16 is provided on at least a part of the position. In this embodiment, the first The guide wall 16A is substantially 90 degrees with respect to the first top wall groove 16. The purpose of the first guide wall 16A is to reduce the surface pressure of the shaft core 31 moving along the first top wall groove 16. That is, by providing the first guide wall 16A, the contact area with the shaft core 31 is increased, thereby reducing the surface pressure of the shaft core 31. This is because the surface pressure of the shaft core 31 is applied to the inner surface of the first top wall groove 16 during the period when tension is applied to the rope CD and the brake device 1000 is active, and the inner surface of the first top wall groove 16 is caused by the surface pressure. If the surface is ground, the interval between the knurled roller 240 and the roller portion 42 changes, and the rotation transmission to the knurled roller 240 may become insufficient. By providing the first guide wall 16A, it is possible to prevent the housing 10A from being ground due to the pressure from the shaft core 31. In addition, the thickness of the first guide wall 16A may be any thickness, and it may be appropriately designed in consideration of the material of the housing 10A, the moving speed of the shaft core 31, and the like.

In addition, when the housing 10A is viewed from the top, in the second ceiling groove 17 along the outer edge of the housing 10A, at least a part of the second top wall groove 17 along the edge located far away from the center of the housing 10A is provided with a second A second guide wall 17A from which the top wall groove 17 protrudes upward. In this embodiment, the second guide wall 17A is substantially 90 degrees with respect to the second top wall groove 17. The purpose of the second guide wall 17A is to reduce the surface pressure of the shaft core 41 moving along the second top wall groove 17. That is, by providing the second guide wall 17A, the contact area with the shaft core 41 is increased, thereby reducing the surface pressure of the shaft core 41. This is because when tension is applied to the rope CD and the brake device 1000 is active, the surface pressure of the shaft core 41 is applied to the inner surface of the second top wall groove 17, and the second top wall groove 17 is affected by the surface pressure. If the inner surface is ground, the distance between the knurled roller 240 and the roller portion 42 changes, and there is a possibility that the rotation transmission to the knurled roller 240 may become insufficient. By providing the second guide wall 17A, it is possible to prevent the case 10A from being ground due to the pressure from the shaft core 41. In addition, the thickness of the second guide wall 17A may be any thickness, and it may be appropriately designed in consideration of the material of the housing 10A, the moving speed of the shaft core 41, and the like.

In addition, when the housing 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 since the housing 10A is very strong, there is basically no case where the housing 10A is ground due to the pressure from the shaft core 31 and the shaft core 41.

The flange portion 13 is opposed to the top wall portion 11 and extends radially from the front side wall portion 12f, the rear side wall portion 12b, the right side wall portion 12r, and the left side wall portion 12l. In this embodiment, it is formed in a substantially circular shape. .

The cylindrical portion 13C is connected to the flange portion 13 and is located outside the inner peripheral gear 115. In this embodiment, the cylindrical portion 13C is formed in a substantially cylindrical shape.

The cover 112 is a part connected to the cylindrical part 13C and fitted with the base 70. In this embodiment, the outer edge of the cover 112 is formed in a substantially square shape. In addition, the cover 112 is provided with two first engaging grooves 111A on both ends of the left and right side surfaces, respectively. Furthermore, two second engaging grooves 111B are provided at both ends of the front end, and one second engaging groove 111B is provided at the approximate center of the rear end. The first engaging groove 111A is a member that engages with the first engaging plate portion 701A of the base 70 shown in FIG. 6. In addition, the second engaging groove 111B is a member that engages with the second engaging plate portion 701B of the base 70. Thereby, the housing 10A is engaged with the base 70 to form a frame body.

Next, the internal structure of the housing 10A will be described using FIG. 12(b), FIG. 14(a), and FIG. 16. As shown in FIG. 16, a ring-shaped inner peripheral gear 115 that meshes with the planetary gear 280 is formed inside the housing 10A. Next, as shown in FIG. 12(b) and FIG. 14(a), a wave portion 116 having a substantially annular shape in a plan view is formed on the upper portion of the inner peripheral gear 115. The wave portion 116 has a shape in which a portion with a small horizontal distance from the center of a circle passing through the center of the inner peripheral gear 115 and a portion with a large horizontal distance are alternately arranged, and have a zigzag shape in a plan view. Specifically, it is formed in a polygonal shape formed by connecting a plurality of straight lines. Here, in this embodiment, the corrugated portion 116 is configured in such a manner that a portion having a large horizontal distance from the center of a circle passing through the center of the inner peripheral gear 115 abuts against a part of the gear carrier 260 with internal teeth. In this way, the part with a small horizontal distance from the center of the circle passing through the center of the inner gear 115 does not abut the gear carrier 260 with internal teeth.

Furthermore, on the surface on the inner surface side of the flange portion 13 in the interior of the housing 10A, a staggered layer 117 having different heights in the vertical direction of the housing 10A is provided. By providing the corrugated part 116 and the staggered layer 117, it is possible to easily enter For example, the gear carrier 260 with internal teeth can be positioned to reduce frictional resistance. Among them, the gear carrier 260 with internal teeth rotates with the movement of the rope CD centered on a physical or imaginary rotation axis in the vertical direction. An example of a rotating part, namely. In addition, the gear carrier 260 with internal teeth in the present embodiment is a rotating member, and at the same time, because it is equipped with a planetary gear 280, it can also be said to increase the speed of the knurled roller 240 with the movement of the cord CD in one direction. And it is a speed-increasing component that is transmitted to the resistance imparting part RA. Here, the "physical or imaginary axis of rotation" refers to the case where the axis of rotation of the rotating member is a physical axis, or a virtual axis when there is no physical axis (for example, the weight bracket 320 (see FIG. 2) , Figure 3) The vertical axis passing through the center point when viewed from above.

In addition, as shown in FIG. 14, four grooves 118 are formed on the left and right inner surfaces of the housing 10A. The groove 118 is a member for passing the protrusion 230 of the slider 220 described later when the brake device 1000 is assembled or disassembled. In this embodiment, since there are four protrusions 230 of the slider 220, four grooves 118 are also provided on the housing 10A.

1-2-3<slider 220>

Next, the slider 220 will be described using FIG. 13. The slider 220 is equivalent to a moving member that holds the idler roller 40 and the knurled roller 240 inside and moves together with the idler roller 40 and the knurled roller 240. The slider 220 has a top wall portion 221, a rear side wall portion 222 and a front side wall portion 224 connected to the top wall portion 221, and a bottom wall portion 223 connected to the rear side wall portion 222 and the front side wall portion 224, respectively.

The top wall portion 221 has a shape in which a pair of grooves are formed in a substantially rectangular shape. The pair of grooves are a first top wall groove 226 and a second top wall groove 227, respectively. The first ceiling wall groove 226 and the second ceiling wall groove 227 are respectively formed as linear grooves extending in the left-right direction, and are arranged on a straight line.

The bottom wall portion 223 is opposite to the top wall portion 221. In this embodiment, the bottom wall part 223 is formed in substantially the same shape as the top wall part 221. However, the top wall part 221 and the bottom wall part 223 may have different shapes. The bottom wall portion 223 is also formed with a pair of grooves arranged in a straight line along the left-right direction, and the pair of grooves serve as a first bottom wall groove 228 and a second bottom wall groove 229, respectively. The first bottom wall groove 228 and the first top wall groove 226 Opposite in the vertical direction, the second bottom wall groove 229 and the second top wall groove 227 are opposed in the vertical direction. Therefore, when the slider 220 is viewed from above, as shown in FIG. 13(c), the upper and lower grooves overlap and can be seen.

Here, the width of the first top wall groove 226 and the first bottom wall groove 228 is a size that can accommodate the diameter of the shaft core 31. In addition, the widths of the second top wall groove 227 and the second bottom wall groove 229 are large enough to accommodate the diameter of the shaft core 41.

In addition, the four corners of the top wall 221 are provided with protrusions 230 so as to protrude toward the left and right of the top wall 221. As shown in FIG. 4, the protrusion 230 is a member that is received in the support groove 114 of the housing 10A and used to support the slider 220 in a floating state inside the housing 10A. That is, the slider 220 is held in a state where it is not in contact with the gear carrier 260 with internal teeth located below.

Through holes 225 are formed in the front side wall portion 224 and the rear side wall portion 222. The through hole 225 penetrates the front side wall portion 224 and the rear side wall portion 222 in the front-rear direction at substantially the center of the width direction of the front side wall portion 224 and the rear side wall portion 222. The shape of the hole is arbitrary, but it is at least to the extent that a cord CD can be inserted through. It is preferably a shape capable of inserting a plurality of cords CD in a state of being neatly arranged in the longitudinal direction. In addition, in the present embodiment, it is formed in a substantially oblong shape that is long in the vertical direction.

In addition, as shown in FIG. 13( b ), in the rear side wall portion 222, recesses 231 formed from the outer side surface of the rear side wall portion 222 are formed on both sides of the through hole 225. The shape of the recess 231 may be any shape, and may be a notch shape cut from the through hole 225 to the side surface as shown in FIG. 13(b), or may be a substantially circular, substantially rectangular notch, or the like. In addition, in this embodiment, the coil spring SP is arranged in the concave portion 231 on the left side, and one end of the coil spring SP protrudes from the concave portion 231. In addition, when the brake device 1000 is assembled, the coil spring SP abuts against the inner wall of the housing 10A and applies a forward force to the slider 220. In addition, the portion of the coil spring SP protruding from the recess 231 is omitted in FIG. 13. In addition, the coil spring SP may be arranged in the recess 231 on the right side. Furthermore, the coil spring SP may be arrange|positioned in the recessed part 231 of both left and right sides.

The size of the slider 220 in this shape in the left-right direction is approximately the same as the distance between the inner walls of the housing 10A in the width direction, and the size of the slider 220 in the front-rear direction is larger than the distance between the inner walls of the housing 10A. The distance is small. Therefore, when the slider 220 is arranged in the space of the housing 10A, the side surfaces of the top wall portion 221 and the bottom wall portion 223 of the slider 220 abut the inner wall surface in the width direction of the housing 10A, and the slider 220 is opposed to the housing 10A. The body 10A is restricted from moving in the width direction. In this state, the guide groove 113 of the housing 10A and the through hole 225 of the slider 220 are aligned in the front-rear direction. That is, the through hole 225 is a hole for inserting the cord CD into the slider 220. On the other hand, in a state where the slider 220 has been arranged in the space of the housing 10A, a gap is generated between the slider 220 and the inner wall surface of the housing 10A in the front-to-rear direction, and the slider 220 can be relative to the housing 10A. Move in the front and back direction. In addition, in a state where the slider 220 has been arranged in the space of the housing 10A, the coil spring SP protruding from the recess 231 of the rear side wall portion 222 of the slider 220 presses the rear inner wall of the housing 10A. Therefore, in a state in which the slider 220 has been arranged in the space of the housing 10A, the slider 220 is located on the front side and is pushed forward in the housing 10A.

Here, the protrusion 230 of the slider 220 will be described in detail with reference to FIG. 14. As shown in FIG. 14, when assembling the brake device 1000, the slider 220 is arranged so that it is located below the inside of the housing 10A, and the two move relatively in the vertical direction so as to approach. Next, the protrusion 230 provided on the slider 220 is passed through the groove 118 provided in the housing 10A. In addition, in FIG. 14(a), in order to improve visibility, the groove 118 is highlighted. Next, as shown in FIG. 4, the housing 10A and the slider 220 are brought close until the protrusion 230 reaches the supporting groove 114. Then, the coil spring SP provided on the slider 220 abuts against the rear inner wall of the housing 10A, and by applying a forward urging force to the slider 220, the protrusion 230 is positioned in front of the groove 118. Therefore, once the slider 220 is mounted on the housing 10A, the protrusion 230 can be prevented from falling out of the supporting groove 114. In addition, the groove 118 not only functions to allow the protrusion 230 to pass through not only when the brake device 1000 is assembled, but also when the brake device 1000 is disassembled. In this case, the slider 220 is relatively moved backward with respect to the housing 10A against the urging force of the coil spring SP, and when the protrusion 230 reaches the position of the groove 118, the slider 220 is relatively moved downward with respect to the housing 10A That's it.

With such a configuration, the slider 220 can be supported in a floating state inside the housing 10A. Therefore, it is possible to prevent the slider 220 from contacting other components, such as the gear frame 260 with internal teeth, and thus it is possible to reduce or eliminate unnecessary resistance. Therefore, the consumption of each component can be reduced.

1-2-4<idle roller 40, knurled roller 240 and pinion 50>

Next, the idler roller 40, the knurled roller 240, and the pinion gear 50 will be described using FIGS. 3 and 15.

The idle roller 40 is composed of a roller portion 42 and a shaft core 41. In addition, the idle roller 40 has a shaft core 41 parallel to the shaft core 31 of the knurled roller 240 and a roller portion 42 covering the outer peripheral surface of the shaft core 41. Therefore, the rotation axis of the knurled roller 240 and the rotation axis of the idler 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 knurled roller 240. The outer peripheral surface of the roller portion 42 of the idler roller 40 is in a state where the coefficient of friction is higher than that of a flat surface of metal. In addition, both end portions of the shaft core 41 are exposed from the roller portion 42.

One end of the shaft core 31 is inserted into the center of the knurling roller 240. In addition, a pinion gear 50 is inserted into the other end of the shaft core 31. The knurling roller 240 can be formed of any material, and for example, stainless steel can be used.

The idler roller 40 and the knurled roller 240 are held inside the slider 220. In addition, the pinion gear 50 is held outside the slider 220. Here, the positional relationship among the knurling roller 240, the slider 220, and the pinion gear 50 will be described with reference to FIG. 9. FIG. 9 is a part of a cross-sectional view passing through the approximate center of the shaft core 31 viewed from the left side surface of the brake device 1000 of the present embodiment. As shown in FIG. 9, the brake device 1000 has a structure in which the bottom wall portion 223 of the slider 220 is sandwiched by the knurled roller 240 and the pinion gear 50 during assembly. In addition, in this embodiment, in order to reduce the contact area between the pinion gear 50 and the slider 220, the pinion gear 50 is provided with a staggered layer 51. Thereby, when the knurling roller 240 and the pinion gear 50 rotate integrally via the shaft core 31, the sliding resistance between the pinion gear 50 and the slider 220 can be reduced. Thereby, the rotation operation can be made smooth. In addition, in order to reduce resistance, in this embodiment, a washer 241 is inserted into the shaft core 31 under the pinion gear 50 (refer to FIGS. 2 and 3).

1-2-5<Gear carrier 260 with internal teeth and planetary gear 280>

Next, the carrier 260 with internal teeth and the planetary gear 280 will be described with reference to FIGS. 2 and 15. In this embodiment, the gear carrier 260 with internal teeth is substantially doughnut-shaped in a plan view. The gear carrier 260 with internal teeth includes a flange 262 that protrudes outward from the cylindrical portion 264 in a plan view.

An internal gear 261 meshing with the pinion gear 50 is formed on the inner peripheral surface of the inner side of the cylindrical portion 264. Also, a support shaft 263 protruding downward in the vertical direction is formed on the flange 262. The number of support shafts 263 is not particularly limited, but is particularly preferably at equal intervals. In addition, in this embodiment, four support shafts 263 are provided as an example.

In addition, 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 housing 10A. In addition, it is possible to revolve around the center portion of the internal gear 261. Therefore, the rotation of the pinion gear 50 is transmitted to the internal gear 261, and the gear carrier 260 with internal teeth rotates. Along with this, it is rotatably supported on the flange 262 of the gear carrier 260 with internal teeth. The planetary gear 280 on the support shaft 263 rotates, whereby the rotation of the pinion gear 50 can be increased. In addition, a staggered layer 281 is provided on the planetary gear 280. By using this staggered layer, it is possible to avoid contact with other parts.

1-2-6<Balance weight bracket 320 and balance weight 340 with sun gear>

Next, the balance weight holder 320 with sun gear and the balance weight 340 will be described using FIGS. 2 and 15. The balance weight 340 is an example of a centrifugal expansion part that is placed on the base 70 in the housing 10A and applies a centrifugal force to the radially outer side by the rotation input from the braking target. The balance weight holder 320 with sun gear is alternately arranged with convex parts 321 and concave parts 322 toward the outside of the annular ring part 324. Here, the convex portion 321 is a member that abuts against the side surface of the balance weight 340 when the balance weight holder 320 with a sun gear rotates. As shown in FIG. 15, on the outer peripheral surface of the outer side of the ring portion 324, the sun gear 323 meshing with the planetary gear 280 is provided with the rotation axis oriented in a direction substantially perpendicular to the extending direction of the convex portion 321. In addition, a balance weight 340 is arranged in each recess 322. That is, the balance weight bracket 320 with sun gear can also be said to be a component that holds the balance weight 340 in each recess 322 by using the convex portion 321 as a boundary when the brake device 1000 is assembled. In addition, the number of balance weights 340 The number is arbitrary, and is preferably at equal intervals from the viewpoint of balance during rotation. In addition, in this embodiment, eight balance weights 340 are used as an example. Therefore, the convex portions 321 and the concave portions 322 are also provided at eight respectively. That is, the recesses 322 are respectively arranged at equal intervals and at equal distances from the center of rotation of the balance weight holder 320 with sun gear.

In this embodiment, each balance weight 340 is provided with a protrusion 341 on the side of the base 70. Thereby, at least a part of the contact surface between the balance weight 340 and the base 70 is provided with a staggered layer. Therefore, the resistance at the time of contact with the base 70 can be reduced. The number of protrusions 341 is arbitrary, and in this embodiment, four protrusions 341 are provided as an example.

The balance weight 340 is a member that, when the pinion gear 50 rotates, moves away from the center of the internal gear 261 by centrifugal force and abuts against the inner peripheral wall of the housing 10A, thereby acting as a centrifugal brake This component imparts resistance to rotation. Therefore, the inner peripheral wall of the housing 10A, the weight holder 320 with sun gear, and the weight 340 can function as a resistance imparting portion.

In addition, when the brake device 1000 is assembled, the gear carrier 260 with internal teeth and the balance weight carrier 320 with the sun gear are assembled via the plate 300. Specifically, the assembly is performed by inserting the cylindrical portion 264 of the gear holder 260 with internal teeth into the ring portion 324 of the balance 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 the function of preventing the planetary gear 280 from interfering with the balance weight 340 while preventing the planetary gear 280 from tilting. In addition, in order to reduce the thickness of the entire braking device 1000, the balance weight 340 is preferably formed as thin as possible. Furthermore, since the plate 300 is thinly formed, it is preferably made of metal. If it is technically possible, the plate 300 may also be formed of resin. In this case, it may be formed integrally with the sun gear 323.

1-2-7<Base 70>

Next, the base 70 will be described with reference to FIGS. 2, 3, 5( b ), and 15. As shown in FIGS. 2 and 3, a cylindrical portion 708 that is larger than the surrounding volume and recessed on the lower side is provided at the approximate center of the base 70. And, as As shown in FIGS. 2 and 5(b), 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 top surface of the cylindrical portion 708.

The first base groove 706 and the first guide wall 706A are respectively equivalent to the first top wall groove 16 and the first guide wall 16A provided in the housing 10A. Furthermore, the lower end of the shaft core 31 is inserted through the first base groove 706 and abuts against the first guide wall 706A formed on the edge of the first base groove 706. Similarly, the second base groove 707 and the second guide wall 707A are respectively equivalent to the second top wall groove 17 and the second guide wall 17A provided in the housing 10A. Furthermore, the lower end of the shaft core 41 is inserted through the second base groove 707 and abuts against the second guide wall 707A formed on the edge of the second base groove 707.

In addition, the cylindrical portion 708 is not essential, but by providing the cylindrical portion 708 or the like to make the lower side recessed, it is possible to prevent the lower ends of the shaft core 31 and the shaft core 41 from contacting the mounting surface of the mounting brake device 1000, and can be inserted appropriately The shaft core 31 and the lower end of the shaft core 41.

In addition, two first engaging plate portions 701A are respectively provided on both ends of the left and right side surfaces of the base 70. In addition, two second engagement plate portions 701B are provided on both ends of the front side surface, and one second engagement plate portion 701B is provided substantially in the center of the rear side surface. The first engaging plate portion 701A is a member that engages with the first engaging groove 111A provided on the housing 10A. In addition, the second engaging plate portion 701B is a member that engages with the second engaging groove 111B provided on the housing 10A. Thereby, the housing 10A and the base 70 are engaged with each other to form a frame body.

Furthermore, as shown in FIG. 3, FIG. 5(b), FIG. 15, etc., the attachment cylinder 702 used when arranging the brake device 1000 in the upper beam of the shielding device is provided on the outer side of the bottom surface of the base 70. As shown in FIG. For example, by inserting the mounting tube 702 into a member such as a shaft provided in the upper beam, the brake device 1000 can be stably arranged in the upper beam.

1-3 <Assembly composition>

Next, the state of assembling each of the above-mentioned components will be described using FIGS. 4 to 8. Fig. 4 is an assembly diagram of the brake device 1000 constructed by combining the above-mentioned components. As shown in FIG. 4, the appearance of the brake device 1000 is a frame formed by connecting a housing 10A and a base 70, and an arrangement member arranged to be covered from above the housing 10A 200 constitute. As shown in Figs. 2 and 3, the assembly is formed in a state where the central axes of the components overlap in the vertical direction. Specifically, the gear holder 260 with internal teeth and the balance weight holder 320 with sun gear holding the balance weight 340 are assembled via the plate 300. At this time, the planetary gear 280 arranged on the gear carrier 260 with internal teeth and the sun gear 323 arranged on the balance weight carrier 320 with sun gear are meshed with each other.

Next, the shaft core 31 is slid while moving in the horizontal direction in the first top wall groove 226 and the first bottom wall groove 228 of the slider 220. At this time, the knurling roller 240 is located inside the slider 220, and the pinion gear 50 is located outside the slider 220. In addition, the shaft core 41 is slid while moving in the horizontal direction in the second top wall groove 227 and the second bottom wall groove 229. At this time, the roller 42 is located inside the slider 220. Next, the slider 220 and the gear carrier 260 with internal teeth are relatively moved so as to be close to each other, so that the internal gear 261 and the pinion gear 50 provided on the gear carrier 260 with internal teeth mesh with each other.

After that, the base 70 is arranged on the lower side of these components, and as shown in FIG. 14, the housing 10A is covered from above so that the protrusion 230 of the slider 220 passes through the groove 118 of the housing 10A. At this time, the coil spring SP provided on the slider 220 abuts against the inner peripheral wall of the housing 10A, applies a forward urging force to the slider 220, and confirms that the protrusion 230 does not fall out of the support groove 114. Next, the first engaging groove 111A and the second engaging groove 111B provided on the housing 10A and the first engaging plate portion 701A and the second engaging plate portion 701B provided on the base 70 are engaged with each other, so that the housing The body 10A and the base 70 are fixed.

Finally, the arrangement member 200 is covered from above the frame composed of the housing 10A and the base 70. Next, the claw portion 209 provided on the aligning member 200 is engaged with the engaging hole 19 provided on the housing 10A, thereby fixing the aligning member 200 and the housing 10A.

The brake device 1000 assembled in this way is the device shown in FIG. 4. Next, when the assembly of the brake device 1000 is completed, the first cord CD is arranged so as to be located outside the front wall portion 205 of the arrangement member 200 and above the first front groove 201. Next, the second cord CD is inserted into the first front groove 201 via the first front cord insertion portion 201A of the arranging member 200. Next, the third cord CD is inserted into the second front groove 202 via the second front cord insertion portion 202A.

Then, the cords CD pass through the guide grooves 113 provided at the front and rear of the housing 10A and the through holes 225 provided at the front and rear of the slider 220.

Next, the first rope CD among the above-mentioned ropes CD passes so as to be located outside the rear wall portion 206 of the arrangement member 200 and above the first rear groove 203. Next, the second cord CD passes through the first rear cord insertion portion 203A provided on the rear wall portion 206 of the arranging member 200 from the first rear groove 203 to the outside. Next, the third cord CD passes through the second rear cord insertion portion 204A from the second rear groove 204 to the outside. Thereby, it becomes the state shown to Fig.4 (a), (b).

Fig. 4(c) is a left side view of the brake device 1000, that is, a side view viewed from the arrow X direction of Fig. 4(a). As shown in FIG. 4(c), when the brake device 1000 is viewed from the side, the housing 10A, the arrangement member 200, and the base 70 can be confirmed from the upper side. In addition, it can be seen that the protrusion 230 is supported by the support groove 114.

As shown in FIG. 5(a), when the brake device 1000 is viewed from above, it is possible to confirm a part of the housing 10A, the arrangement member 200, and the base 70 in order from the center. Here, as shown in FIGS. 4(a), (b) and 5(a), the upper end of the shaft core 31 is inserted from the first top wall groove 226 provided on the slider 220 through the housing 10A The first top wall groove 16 is exposed to the outside of the housing 10A. Similarly, the upper end of the shaft core 41 is inserted from the second top wall groove 227 provided on the slider 220 through the second top wall groove 17 provided on the housing 10A, and is exposed to the outside of the housing 10A.

Next, the first guide wall 16A provided on the edge of the first top wall groove 16 abuts the shaft core 31, and the second guide wall 17A provided on the edge of the second top wall groove 17 abuts the shaft core 41.

In addition, as shown in FIG. 5(b), when the base 70 is viewed from the bottom, it can be confirmed that the lower end of the shaft core 31 inserted in the first base groove 706 and the shaft core inserted in the second base groove 707 can be confirmed The lower end of 41. In addition, the surface on which the mounting cylinder 702 is provided may be formed to cover the upper part of the cylindrical portion 708 with the surface to cover the shaft core 31 and the lower end of the shaft core 41 from the outside.

1-3-1 <Internal structure in assembled state>

Next, the internal structure in the assembled state will be described using FIGS. 6 to 8. FIG. 6 is a perspective view of the state in which the arrangement member 200 and the housing 10A are removed from the state of FIG. 4. As shown in FIG. 6, the shaft core 31 and the shaft core 41 protrude above the slider 220. In addition, the shaft core 31 is restricted from moving in the width direction of the slider 220 in the first top wall groove 226. Similarly, the shaft core 41 is restricted from moving in the width direction of the slider 220 in the second top wall groove 227. In addition, the cord CD not shown in the figure is inserted into the through hole 225 of the slider 220 along the front-rear direction of the slider 220 in a state of being aligned vertically.

FIG. 7 is a perspective view of the state in which the slider 220 is further removed from the state of FIG. 6. The cord CD (not shown) is inserted into the front and back of the brake device 1000 in a state of being sandwiched between the knurled roller 240 and the roller portion 42. In addition, the pinion gear 50 and the internal gear 261 mesh with each other. Therefore, when tension is applied to the rope CD, a frictional force is generated between the rope CD and the knurled roller 240, thereby being integrated with the knurling roller 240 and the pinion 50 rotates, the rotation of the pinion 50 is transmitted to Internal gear 261. As a result, the internal gear 261 rotates, and the gear carrier 260 with internal teeth and the support shaft 263 provided on the flange 262 also revolve. Along with this, the planetary gear 280 rotatably supported on the support shaft 263 starts to revolve while rotating.

FIG. 8 is a perspective view of a state in which the gear carrier 260 with internal teeth is further removed from the state of FIG. 7. As shown in FIG. 8, the planetary gear 280 and the sun gear 323 mesh with each other. Therefore, the rotation of the planetary gear 280 is transmitted to the sun gear 323, and the balance weight support 320 with the sun gear starts to rotate. As a result, as shown in FIG. 15, the weight 340 held in the recess 322 of the weight holder 320 with sun gear starts to rotate. Then, when the rotation speed exceeds a certain value, the balance weight 340 abuts against the inner wall of the housing 10A due to centrifugal force. Thereby, resistance is given to the rotation of the knurled roller 240.

Next, the relative positions of the components in the assembled state will be described in more detail using FIGS. 16 and 17. Fig. 16 is a cross-sectional view of a cut portion taken along the line A-A in Fig. 4(c). As shown in FIG. 16, the pinion gear 50 centered on the shaft core 31 and the internal gear 261 provided on the gear carrier 260 with internal teeth mesh with each other. In addition, it is configured that the rotation of the internal gear 261 is transmitted to the row via the support shaft 263 of the gear carrier 260 with internal teeth. Star gear 280. Furthermore, the planetary gear 280 meshes with the sun gear 323 provided on the balance weight bracket 320 with sun gear and the inner peripheral gear 115 provided inside the housing 10A. Therefore, by applying the rotation caused by the pinion gear 50, the planetary gear 280 can revolve around the center of the internal gear 261 in the space formed between the sun gear 323 and the internal peripheral gear 115.

Fig. 17 is a cross-sectional view of a cut portion taken along line B-B in Fig. 5(a). As shown in Fig. 17, in the present embodiment, the cross-sectional view of the cut portion along the line B-B is formed to be approximately bilaterally symmetrical with the mounting cylinder 702 as the center. Furthermore, the shaft core 31 and the shaft core 41 protrude from the upper end of the housing 10A and the lower end of the base 70. In addition, in the present embodiment, the upper ends of the first guide wall 16A and the second guide wall 17A are substantially the same height as the upper ends of the shaft core 31 and the shaft core 41, respectively.

Furthermore, the knurling roller 240 and the roller portion 42 are located inside the slider 220. Furthermore, the pinion gear 50 is located outside the slider 220 in a state in which the slider 220 is clamped together with the knurled roller 240. In addition, the pinion gear 50 and the internal gear 261 mesh with each other.

Furthermore, the upper side of the housing 10A to the flange portion 13 are covered by the arrangement member 200. In addition, the housing 10A is engaged with the base 70 at its lower end. Furthermore, a balance weight 340 is held on the upper part of the base 70. Here, in the present embodiment, since the balance weight 340 is formed as a removable type, the number and type of the balance weight 340 can be used to adjust the required braking force. That is, when a large braking force is required, the number of balance weights 340 can be increased, or other balance weights with higher density can be maintained on the balance weight support 320 with sun gear. On the other hand, in the case where a small braking force is sufficient, the number of balance weights 340 can be reduced. In addition, from the viewpoint of stability during rotation, it is preferable to arrange the balance weights 340 symmetrically on the surface held by the balance weight holder 320 with the sun gear. In addition, in the present embodiment, the protrusion 341 provided on the weight 340 abuts against the bottom surface of the base 70, so that the resistance between the weight 340 and the base 70 during rotation can be reduced.

1-4 <action>

Next, the operation of the brake device 1000 of this embodiment will be described with reference to FIG. 18. Fig. 18(a) is a state where no tension is applied to the rope CD (normal state), and Fig. 18(b) is a state in which tension is applied to the rope CD and the rope CD is clamped by the knurling roller 240 and the roller 42 (clamping Holding state), Fig. 18(c) is a summary view of the rotation direction of each member when changing from the state of Fig. 18(a) to the state of Fig. 18(b). 18(a) and (b) are the same as FIG. 16, and both are cross-sectional views taken along the line A-A of FIG. 4(c). Here, for descriptive reasons, the outer circumference of the roller portion 42 not shown in the cross-sectional view is superimposed on the circumference of the shaft core 41, and the outer circumference of the knurled roller 240 is superimposed on the circumference of the shaft core 31. In addition, the outer periphery of the knurling roller 240 is not strictly circular, but for the sake of simplification of description, it is shown as an approximate circular shape.

As shown in FIG. 18(a), in the normal state, as described above, the coil spring SP abuts against the inner wall of the housing 10A and pushes the slider 220 forward. Therefore, the slider 220 is located in front of the housing 10A. Thereby, the shaft core 31 whose position is restricted by the first top wall groove 226 and the first bottom wall groove 228 of the slider 220 is restricted by the second top wall groove 227 and the second bottom wall groove 229 The shaft core 41, which has been in position, moves forward together with the slider 220. Furthermore, the first ceiling wall groove 16 and the second ceiling wall groove 17 provided in the housing 10A held on the upper portion of the slider 220 decrease in distance between each other as they go to the front. Similarly, the first susceptor groove 706 and the second susceptor groove 707 provided in the susceptor 70 decrease the distance between each other as they go to the front. Therefore, the distance between the roller part 42 rotatably supported by the shaft core 41 and the knurled roller 240 rotatably supported by the shaft core 31 is also reduced. That is, the first top wall groove 16 and the first base groove 706 function as restricting grooves, which are movably fitted with the shaft core 31 of the knurled roller 240 to restrict the knurled roller 240 to only move along the groove. Make a move. Similarly, the second top wall groove 17 and the second base groove 707 function as restriction grooves that are movably fitted with the shaft core 41 of the roller portion 42 to restrict the roller portion 42 from only moving along the groove. . In addition, since the center points of the first top wall groove 16 and the first base groove 706 and the inner peripheral surface of the gear carrier 260 with internal teeth are formed on concentric circles when viewed from above, even if the shaft core 31 moves in each groove , The pinion gear 50 can also continuously mesh with the internal gear 261 provided on the gear carrier 260 with internal teeth.

In this way, when the distance between the knurling roller 240 and the roller portion 42 becomes smaller, the knurling roller 240 is pushed by the roller portion 42 and the cord CD is clamped by the knurling roller 240 and the roller portion 42. That is, in the present embodiment, the coil spring SP also functions as an urging member that always applies a force to the knurled roller 240 so that the knurled roller 240 is pressed by the roller portion 42.

In addition, in the braking device 1000 in the normal state, tension is applied to the cord CD in the direction of the arrow D1 (forward). Then, the knurling roller 240 rotates counterclockwise, and the roller portion 42 rotates clockwise using the friction force generated with the cord CD. Next, through the rotation of the knurled roller 240, the pinion gear 50, which shares the same shaft core 31 and is fixed, also rotates (rotates) in the same direction (counterclockwise) as the knurled roller 240. At this time, as shown in FIG. 18(b), the shaft core 31 and the shaft core 41 move forward in a plan view and are close to each other in the left and right directions, and the gripping force of the knurled roller 240 and the roller portion 42 on the cord CD becomes stronger. Therefore, the knurling roller 240 reliably rotates in accordance with the movement of the cord CD. Then, since the pinion gear 50 meshes with the internal gear 261, the internal gear 261 rotates counterclockwise (rotates) by the force applied by the teeth of the pinion gear 50. Thereby, since the gear carrier 260 with internal teeth also rotates counterclockwise (rotation) together with the internal gear 261, the planetary gear 280 provided on the gear carrier 260 with internal teeth also rotates counterclockwise (revolution). ). Here, since the planetary gear 280 meshes with the inner peripheral gear 115 fixed by the sun gear 323 and the housing 10A, the planetary gear 280 rotates in a direction opposite to the revolution direction (clockwise) while revolving counterclockwise. Therefore, the sun gear 323 meshed with the planetary gear 280 inside the planetary gear 280 rotates (rotates) in the direction opposite to the rotation of the planetary gear 280 (counterclockwise). At this time, with the planetary gear 280, the rotation of the sun gear 323 is accelerated. Thereby, the balance weight 340 held on the balance weight support 320 with sun gear that rotates together with the sun gear 323 also starts to rotate. In addition, as described above, since the housing 10A and the base 70 are fixed to the inner gear 115 that meshes with the planetary gear 280 on the outer side of the planetary gear 280, the inner gear 115 does not change even when the planetary gear 280 rotates. Will rotate.

Furthermore, as shown in FIG. 18(b), when the knurling roller 240 and the roller portion 42 are close to the boundary (nip state), the knurling roller 240 continues to rotate, but the movement of the knurling roller 240 along the internal gear 261 stops . at this time, The rotation of other components caused by the rotation of the knurling roller 240 continues. Then, the balance weight 340 abuts against the inner peripheral wall of the housing 10A by centrifugal force, thereby generating resistance to rotation. That is, as the moving speed of the rope CD increases, the rotation speed increases, thereby increasing the centrifugal force. Furthermore, as the centrifugal force increases, the weight 340 abuts against the inner peripheral wall of the housing 10A more strongly, and the resistance increases. Thereby, the moving speed of the cord CD (the descending speed of the solar radiation shielding member) can be suppressed. Here, in the case where the tension applied to the rope CD is substantially constant (for example, in the case where the solar shielding member that is suspended and supported on the rope CD on the front side of the brake device 1000 freely falls), the When the tension applied by the rope CD is balanced with the resistance generated by the balance weight 340 and the inner peripheral wall of the housing 10A, the moving speed of the rope CD becomes substantially constant. Therefore, the braking device 1000 functions as a rotary damper for the movement of the cord CD, and can lower the solar radiation shielding member slowly.

Figure 18(c) summarizes the rotation direction of each component (for the pinion gear 50, it also includes the front and rear direction and the tightening direction when viewed from the top) for the change in the clamping state from the normal state to the clamping state described above Figure.

On the other hand, when tension is applied to the cord CD in the direction opposite to the arrow D1 (rear), the knurled roller 240 and the roller portion 42 rotate in the opposite direction to the above. As a result, the shaft core 31 and the shaft core 41 move away from each other along the first ceiling wall groove 16 and the second ceiling wall groove 17. Then, the clamping force of the knurled roller 240 with respect to the cord CD becomes weak, and the cord CD can be pulled with a weak force. Therefore, in the case where the brake device 1000 is installed in the upper beam, it is preferable to set the direction in which tension is applied to the rope CD forward as the descending direction of the solar shielding member, and the direction in which tension is applied to the rope CD backward as the solar shield in FIG. The rising direction of the part.

Next, the movement of the slider 220 when the state changes between the normal state and the gripping state will be described with reference to FIG. 19. Fig. 19(a) corresponds to Fig. 18(a), and Fig. 19(b) and Fig. 18(b) respectively.

When changing from the normal state of FIG. 19(a) to the gripping state of FIG. 19(b), the shaft core 41 and the roller portion 42, as well as the shaft core 31 and the knurled roller 240, use the frictional force with the cord CD to move toward the center of the figure. Move forward. this When the shaft core 41 is in contact with the second top wall groove 227 and the second bottom wall groove 229, as the shaft core 41 moves forward, the second top wall groove 227 and the second bottom wall groove 229 are applied to the front. force. In addition, the shaft core 31 is in contact with the first top wall groove 226 and the first bottom wall groove 228, and as the shaft core 31 moves forward, the first top wall groove 226 and the first bottom wall groove 228 are applied forward. force. Therefore, when the shaft cores 31 and 41 move forward by Δ, the slider 220 also moves forward by Δ.

Next, the predetermined nipping position of the initial state (before abrasion) and the nipping position after the abrasion of the pair of nip members (the roller portion 42 and the knurled roller 240) will be described with reference to FIG. 20. In addition, in the present embodiment, the roller portion 42 and the knurled roller 240 are rotating bodies that rotate around the shaft 41 and the shaft 31, respectively.

As shown in FIG. 20, in the initial state of the knurled roller 240, that is, in the state before the diameter becomes smaller due to wear, the knurled roller 240 and the roller portion 42 move from the release (un-nip) position along with the movement of the cord CD. Move forward along the first top wall groove 16 and the second top wall groove 17. That is, at least one of the pair of clamping bodies is configured to move along a predetermined movement trajectory (double arrow in the figure). Here, the movement trajectory can be said to be a clamp along the restriction grooves (the first top wall groove 16 and the first base groove 706, and the second top wall groove 17 and the second base groove 707 (refer to FIG. 5)). The movement trajectory of the holding body. Thereby, the knurling roller 240 and the roller part 42 clamp the cord CD. The positions of the knurling roller 240 and the roller portion 42 at this time are the predetermined nipping positions.

At this time, the movement trajectory extends beyond the predetermined clamping position. In other words, the restriction groove extends beyond the clamping position. Furthermore, the movement trajectory extends in the direction toward the cord CD. Moreover, the movement trajectory of the knurling roller 240 and the roller part 42 is comprised so that the extension line may cross each other. In addition, the clamping position is a position away from the end of the restriction groove on the approaching direction side (the front side in FIG. 20) with respect to the cord CD. Furthermore, a part of the knurled roller 240 or the roller 42, especially the contact part with the cord CD is reduced due to wear. When the diameter of the knurled roller 240 or the roller 42 becomes smaller, it passes through the restriction groove exceeding the prescribed clamp The shaft 31 and the shaft 41 are held in the restricting groove within the range of the holding position (the holding position in the initial state), whereby the knurled roller 240 and the roller portion 42 clamp the cord CD. As shown in FIG. 20, the clamping position after abrasion is located at a position shifted by d from the predetermined clamping position toward the front in the figure.

In this way, the movement trajectory (restriction groove) extends beyond the nip position of the knurled roller 240 or the roller portion 42 in the initial state, even if the diameter of the knurled roller 240 or the roller portion 42 becomes smaller due to wear, The cord CD can also be clamped appropriately.

In addition, the same effect can be exerted even when the diameter of the rope becomes thin due to the abrasion of the rope.

2. The second embodiment

Next, the motion conversion unit of the second embodiment of the present invention will be described using FIGS. 21 to 23. As shown in FIG. 21, in the second embodiment, the knurled roller 240 and the roller portion 42 are connected via the shaft core 31 and the shaft core 41, respectively. Here, the connection method is any method. For example, as shown in FIG. 21(a), a pair of plates 800 may also be used. Here, in the second embodiment, the plate piece 800 is substantially rectangular, and for example, a metal plate piece 800 can be used. In addition, a through hole 801 is provided at the position of the plate 800 corresponding to the shaft core 31 and the shaft core 41. By inserting the shaft core 31 and the shaft core 41 into the through hole 801, the knurled roller 240 and the roller can be connected. 42 connections. In addition, in the case of using the cord-shaped member 900, as shown in FIG. 22, the knurled roller 240 and the roller 42 rotate in opposite directions when the cord CD moves, so the cord-shaped member 900 is crossed. Here, FIG. 22 is a schematic view of the state in which the member of FIG. 21(b) clamps the cord CD when viewed from the arrow Z direction.

In addition, as shown in FIG. 21(b), instead of the sheet 800, a cord-shaped member 900 may be used to connect the knurled roller 240 and the roller portion 42.

Next, as shown in FIG. 23, this member is installed in the inside of the housing 10B so that the cord CD may be clamped between the knurling roller 240 and the roller part 42. As shown in FIG. Here, in FIG. 23, in order to improve visibility, the form using the rope-shaped member 900 in FIG. 21(b) is used for description. In addition, it is assumed that gravity g acts in the direction indicated by arrow g in FIG. 23. For convenience of description, the direction of arrow g is referred to as downward, and the direction opposite to arrow g is referred to as upward.

In addition, in the housing 10B, a first side wall hole 119A is provided at a position corresponding to the shaft core 31. The first side wall hole 119A has an oblong shape inclined toward the front. In addition, these shapes are not particularly limited It can be designed appropriately. Here, in the second embodiment, the first side wall hole 119A corresponds to the restriction groove, and extends beyond the nipping position of the first nipping member (knurled roller 240) in the initial state. In addition, in FIG. 23(b), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn. In addition, the double arrow in FIG. 23(b) indicates the movement trajectory of the holder.

The shaft core 31 can move along the first side wall hole 119A. Here, the knurling roller 240 is a roller that is provided at a position capable of contacting the cord CD and capable of moving in the vertical direction. Here, in the first side wall hole 119A, an inner peripheral surface is formed by the clamping guide slope 119a, the release guide slope 119b, the clamping side restriction surface 119c, and the release side restriction surface 119d.

In addition, in the inside of the housing 10B, a pillar 92 is fixed at a position that faces the knurled roller 240 with the cord CD interposed therebetween, and is further forward than the knurled roller 240.

First, when tension is applied to the rope CD in the direction of arrow D2 from the state shown in FIG. 23(a), the frictional force generated with the rope CD causes the knurling roller 240 to move in the direction of arrow D3 along the first side wall hole 119A. Move down. At this time, the movement trajectory of the knurling roller 240 is along the trajectory of the first side wall hole 119A. In addition, as shown in FIG. 23(b), the movement trajectory extends beyond the predetermined clamping position.

As shown in FIG. 23(b), this position is a position on the lower side of the movable direction having a vertical component, that is, the first position. In this state, since the distance between the knurled roller 240 and the support 92 in the vertical direction is small, the cord CD bends and becomes a clamped state. That is, the pillar 92 functions as a second nipping member that is positioned to sandwich the cord CD with the knurled roller 240. In addition, the roller portion 42 functions as an auxiliary roller that moves in conjunction with the knurling roller 240.

Here, in the clamping state, when the shaft core 31 reaches the front limit of the movable range, the knurling roller 240 that moves substantially in parallel starts to rotate (clockwise in the figure). Next, similarly to the third embodiment, the rotation of the shaft core 31 may be output to the resistance imparting portion RA that generates resistance along with the movement of the cord CD. At this time, a one-way clutch may be provided between the knurled roller 240 or the knurled roller 240 and the resistance imparting part RA so that when the rope CD moves forward, the rotation is transmitted to the resistance imparting part RA, but when the rope CD moves forward Move back The rotation during movement is not transmitted to the resistance imparting part RA. Here, the resistance imparting portion RA may be provided inside or outside the housing 10B, or may be provided inside the knurling roller 240.

On the other hand, when tension is applied to the rope CD in the direction opposite to the arrow D2, the vertical distance between the knurling roller 240 and the support 92 becomes longer by generating a motion in the opposite direction to the above-mentioned motion, and the rope CD is The clamping force becomes weaker.

Next, as shown in FIG. 23(a), the shaft core 31 opposes the gravity g and moves toward the second position, which is the position above the vertical component of the movable direction (the tilt direction in FIG. 23) of the first side wall hole 119A mobile. This state is called a free movement state. In the freely moving state, the cord CD is released in a non-bent state. Then, the free movement of the cord CD can be allowed.

In addition, instead of the shaft core 31 and the knurled roller 240, and the shaft core 41 and the roller portion 42, it is also possible to use a pillar that does not rotate.

In this way, in the second embodiment, the movement trajectory (restriction groove) extends beyond the nip position of the knurled roller 240 or the roller portion 42 in the initial state, so that even if the diameter of the knurled roller 240 or the roller portion 42 is affected by Even when it becomes smaller due to wear, the cord CD can be clamped appropriately.

3. The third embodiment

Next, another motion conversion unit of the third embodiment of the present invention will be described using FIG. 24. As shown in FIG. 24, a housing space 93 slightly larger than the diameter of the knurled roller 240 is formed in the housing 10C of the third embodiment. Here, the storage space 93 has a shape in which a circular arc shape and a ray shape are combined in a cross-sectional view. Therefore, the knurled roller 240 can move freely in the storage space 93. In addition, a clamping guide slope 93a and a release side restriction surface 93d are formed in the storage space 93.

In addition, the shaft core 31, the knurling roller 240, the support column 92, the two output shafts 95, and the endless belt 94 are arranged inside the housing 10C. In addition, a first side wall hole 119A is provided at a position corresponding to the shaft core 31 in the housing 10C. Here, in the third embodiment, the first side wall hole 119A corresponds to the restriction groove, and extends beyond the nipping position of the first nipping member (knurled roller 240) in the initial state. In addition, Figure 24 In (b), the dashed circle indicates the predetermined clamping position, and the following description is to describe the operation after the clamping body is worn. In addition, the double arrow in FIG. 24(b) indicates the movement trajectory of the holder. Here, the knurling roller 240 is arranged to slightly contact the cord CD in a freely moving state.

The knurling roller 240 is installed so as to sandwich the cord CD with the pillar 92. Furthermore, an endless belt 94 is mounted on the two output shafts 95. The endless belt 94 is configured such that resistance is applied to the endless belt 94 by the rotation of the knurled roller 240, so that the endless belt 94 can rotate. In addition, if possible, the surface of the endless belt 94 may be formed into a shape that meshes with the surfaces of the knurling roller 240 and the output shaft 95. In addition, the output shaft 95 is configured to output its own rotation to a resistance imparting portion that generates resistance along with the movement of the cord CD. The output shaft 95 and the endless belt 94 are configured such that the endless belt 94 and the ray portion of the storage space 93 are substantially straight.

First, when tension is applied to the rope CD in the direction of arrow D4 from the state shown in FIG. 24(a), the friction force generated between the rope CD and the knurling roller 240 rotates in the direction of arrow D5 while passing through the storage space. The ray portion of 93 moves toward the direction approaching the endless belt 94 (first position). At this time, the movement trajectory of the knurling roller 240 is along the trajectory of the first side wall hole 119A. In addition, as shown in FIG. 24(b), the movement trajectory extends beyond the predetermined clamping position. As shown in FIG. 24(b), in this state, since the distance between the knurling roller 240 and the support 92 in the vertical direction is small, the cord CD bends and becomes a clamped state. In other words, the support post 92 functions as a second nipping member that is positioned to sandwich the cord CD with the knurled roller 240.

In addition, in the clamped state, the rotation of the output shaft 95 may be output to the resistance imparting part RA. That is, by the friction force acting between the knurling roller 240 and the endless belt 94, the endless belt 94 rotates in the direction opposite to the arrow D5 (counterclockwise) with respect to the output shaft 95. Thereby, the output shaft 95 also rotates (rotates) in the same direction as the endless belt 94 (counterclockwise). This rotation is output to the resistance imparting part RA. In this configuration, one of the output shafts 95 performs the same function as the shaft core 31 in the second embodiment (transmits rotation to the resistance imparting portion RA). At this time, a one-way clutch may be provided between the knurled roller 240 and the resistance imparting part RA, so that when the rope CD moves forward, the rotation is transmitted to the resistance imparting part RA, but when the rope CD moves backward, the rotation does not rotate. It will be transmitted to the resistance providing part RA.

On the other hand, when tension is applied to the rope CD in the direction opposite to the arrow D4, the vertical distance between the knurling roller 240 and the support 92 becomes longer by generating a movement in the opposite direction to the above-mentioned movement, and the rope CD is The clamping force becomes weaker.

Then, as shown in FIG. 24(a), the shaft core 31 resists the gravity g and moves to a position away from the endless belt, that is, the second position. This state is called a free movement state. In the freely moving state, the cord CD is released in a non-bent state. Then, the free movement of the cord CD can be allowed.

In addition, instead of the pillar 92, a shaft core and a roller may be used.

In this way, in the third embodiment, the movement trajectory (restriction groove) extends beyond the nip position of the knurled roller 240 in the initial state, so that even when the diameter of the knurled roller 240 becomes smaller due to wear, The cord CD can also be clamped appropriately.

4. Fourth Embodiment

Next, the motion conversion unit of the fourth embodiment of the present invention will be described with reference to FIG. 25. The fourth embodiment is a modified configuration of the second embodiment. Therefore, only the changes from the second embodiment will be described below. As shown in FIG. 23, in the second embodiment, the shaft core 31 and the knurled roller 240 are lowered downward by gravity g, and it can be said that gravity g is used as a urging member. In contrast, in the fourth embodiment, as shown in FIG. 25, the shaft core 31 is connected to the fixed shaft 160 by the connecting member 170. Here, the connecting member 170 can use, for example, the plate 800 of FIG. 21. Furthermore, a spring 150 is attached to the connecting member 170. Thereby, by urging the connecting member 170 in the direction of the arrow g with the fixed shaft 160 as the center, the shaft core 31 and the knurling roller 240 are urged in the direction of the arrow g.

In addition, in the fourth embodiment, similarly to the third embodiment, the first side wall hole 119A corresponds to the restriction groove, and extends beyond the clamping position of the first clamping member (knurled roller 240) in the initial state. . In addition, in FIG. 25(b), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn. In addition, the double arrow in FIG. 25(b) indicates the movement trajectory of the holder.

When tension is applied to the rope CD in the direction of the arrow D6 from the freely moving state shown in FIG. 25(a), the shaft core 31 and the knurling roller 240 also move in the direction of the arrow D6 by the friction generated with the rope CD. At this time, the connecting member 170 rotates clockwise with the fixed shaft 160 as the center, and the shaft core 31 and the knurled roller 240 move in the arrow g direction. Thereby, it transitions to the clamped state shown in FIG. 25(b). At this time, the movement trajectory of the knurling roller 240 is along the trajectory of the first side wall hole 119A. In addition, as shown in FIG. 25(b), the movement trajectory extends beyond the predetermined clamping position.

In addition, when tension is applied to the cord CD in the direction opposite to the arrow D6, it transitions from the gripping state shown in FIG. 25(b) to the free movement state shown in FIG. 25(a).

That is, the device using the components of the fourth embodiment is configured such that the knurling roller 240 moves in such a way that when the knurling roller 240 is in the second position, it acts between the knurling roller 240 and the cord CD The frictional force is smaller than the frictional force acting between the knurled roller 240 and the cord CD when the knurled roller 240 is in the first position.

In addition, similarly to the third embodiment, in the case of outputting the rotation of the shaft core 31 to the resistance imparting portion RA that generates resistance along with the movement of the cord CD, a device using the components of the fourth embodiment is configured as follows: When the knurling roller 240 is at the first position, the rotation of the knurling roller 240 caused by the movement of the cord CD is output to the resistance imparting part RA, and when the knurling roller 240 is at the second position, the knurling caused by the movement of the cord CD is not knurled The rotation of the roller 240 is output to the resistance imparting part RA.

<Modifications of the fourth embodiment>

Next, a modification example of the fourth embodiment will be described with reference to FIG. 26. As shown in FIG. 26, the first clamping member (knurled roller 240) and the second clamping member (clamping plane 132s) constitute a pair of clamping members. The housing 10B contains the knurled roller 240 inside. That is, the housing 10B includes at least one of the pair of clamping members inside. Here, the broken line CB in the figure is a line showing the bottom surface of the housing 10B. Furthermore, the housing 10B has a first side wall hole 119A.

The clamping plane 132s allows the movement of the rope CD in the freely moving state, and clamps the rope CD together with the knurled roller 240 in the clamping state. In addition, the nip plane 132s is a plane that is fixed before and after the movement of the knurling roller 240.

In the modification of the fourth embodiment, similarly to the fourth embodiment, the first side wall hole 119A corresponds to the restriction groove and exceeds the clamping position of the first clamping member (knurled roller 240) in the initial state. extend. In addition, in FIG. 26(b), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn. In addition, the double arrow in FIG. 26(b) indicates the movement locus of the knurling roller 240 (shaft core 31).

When tension is applied to the rope CD in the direction of the arrow D7 from the freely moving state shown in FIG. 26(a), the shaft core 31 and the knurled roller 240 also move in the direction of the arrow D7 by the frictional force generated with the rope CD. At this time, the connecting member 170 rotates clockwise around the fixed shaft 160, whereby the shaft core 31 and the knurled roller 240 move in the arrow g direction. Thereby, it transitions to the clamped state shown in FIG. 26(b). At this time, the movement trajectory of the knurling roller 240 is a trajectory along the first side wall hole 119A. In addition, as shown in FIG. 26(b), the movement trajectory extends beyond the predetermined clamping position.

In addition, when tension is applied to the cord CD in the direction opposite to the arrow D7, it transitions from the gripping state shown in FIG. 26(b) to the free movement state shown in FIG. 26(a).

That is, the device system using the components of the modification of the fourth embodiment is configured such that the knurling roller 240 moves in such a way that when the knurling roller 240 is in the second position, it acts on the knurling roller 240 and the cord CD The frictional force therebetween is smaller than the frictional force acting between the knurled roller 240 and the cord CD when the knurled roller 240 is in the first position.

Here, the clamping plane 132s may be the bottom surface 132 of the upper beam HB or the bottom surface of a component different from the upper beam HB.

Next, using FIG. 27, the case where the cord CD can be clamped appropriately even when the diameter of the first clamping member (knurled roller 240) becomes smaller due to wear will be described in further detail. Here, FIG. 27 corresponds to the clamped state shown in FIG. 26(b).

As shown by the broken line in the figure, the knurled roller 240 before being worn clamps the cord CD at a predetermined clamping position. Furthermore, the diameter of the knurled roller 240 after wear becomes smaller than that before wear. Therefore, there is a distance between the knurled roller 240 and the rope CD at the worn clamping position, and the rope CD cannot be clamped properly. However, when the movement track (corresponding to the first side wall hole 119A of the restriction groove) extends beyond the nip position of the knurled roller 240 in the initial state (before abrasion), the worn knurled roller 240 becomes the knurled roller 240 and moves to Exceed the position of the clamping position before wear and clamp the rope CD at the clamping position.

5. Fifth Embodiment

Next, the brake device 5000 of the fifth embodiment will be described with reference to FIGS. 28 to 34. As shown in FIG. 28 and the like, the brake device 5000 of the present embodiment is configured such that the motion conversion portion DT and the resistance imparting portion RA are arranged side by side. Hereinafter, the outline of this embodiment will be described.

As shown in FIGS. 28-30, the motion conversion part DT is composed of a catch roller 32A and a catch roller 32B. The catch roller 32A is composed of an inner cylinder 42A and an outer cylinder 240A, and the catch roller 32B is a so-called fixed pulley. , And is composed of a knurled roller 240 mounted on the shaft core 31 in a rotatable manner. In addition, the grab rollers 32A and 32B are both provided on the housing 440A. The rope CD is clamped by the rotation torque of the grab rollers 32A and 32B. In addition, the rope CD is inserted into the motion conversion part DT via the rope insertion hole 14A. The grip roller 32A will be described in more detail later.

The resistance imparting part RA is a so-called centrifugal governor, and is a member: that is, the balance weight 340A revolves around the damper shaft shown in FIG. 29, and when the balance weight 340A moves to the outer diameter side due to centrifugal force , The balance weight 340A is in contact with the housing 10Aa, and friction occurs to generate a braking force for the component. A rotation transmission mechanism (not shown) that rotates the counterweight 340A is connected to the shaft core 31 of the grab roller 32B. When the grab roller 32B rotates, the power involved in the rotation is transmitted to the resistance imparting section via the rotation transmission mechanism RA, whereby the balance weight 340A revolves around the damper shaft. The number of balance weights 340A is not limited, for example, it can be two, four, eight, or sixteen.

The grab roller 32A is configured such that the inner tube 42A and the outer tube 240A can rotate relative to each other and have sliding resistance during the relative rotation. As shown in FIG. 31, it is comprised so that the outer periphery of 42 A of inner cylinders may be enclosed by 240 A of outer cylinders. This situation will be described in detail later. A rotating shaft 31B and a guide shaft 31C are provided on the side surface of the inner cylinder 42A, and a bearing for the rotating shaft 31B and a guide groove 31Ca for guiding the movement of the guide shaft 31C are provided on the housing 440A. That is, the grip roller 32A is configured to be able to rotate around the rotation shaft 31B. The guide groove 31Ca is provided so that the grab roller 32A and the rope CD are approached on one side, and the grab roller 32A and the rope CD are moved away from the other side. In other words, the guide groove 31Ca is formed so that the grip roller 32A is away from the cord CD from one side to the other side. Here, in the fifth embodiment, the guide groove 31Ca corresponds to the restriction groove, and extends beyond the nip position of the nip body (the grab roller 32A and the grab roller 32B) in the initial state. In addition, in FIG. 30(a), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn.

According to the above structure of the guide groove 31Ca, when the cord CD moves in the braking direction indicated by the arrow in FIG. 30, the grab roller 32A rotates around the rotating shaft 31B, and the guide shaft 31C moves along the guide groove 31Ca. Here, in the guide groove 31Ca, an inner peripheral surface is formed by the clamping guide slope 31a, the release guide slope 31b, the clamping side restriction surface 31c, and the release side restriction surface 31d. Furthermore, at the position (first position) where the guide shaft 31C is located on the side of the guide groove 31Ca shown in FIG. 30(a), the rotation of the grip roller 32A is restricted. In this state, the rope CD is clamped by the grab rollers 32A and 32B. When the rope CD moves further in the braking direction, the outer cylinder 240A of the grab roller 32A rotates relative to the inner cylinder 42A, and the grab roller 32B is centered on the shaft core 31 Perform rotation. That is, the resistance is provided by the resistance imparting part RA connected to the grip roller 32B, and the movement of the cord CD is braked.

In addition, according to the above-mentioned structure of the guide groove 31Ca, when the cord CD moves in the release direction indicated by the arrow in FIG. 30, the grab roller 32A rotates around the rotating shaft 31B, and the guide shaft 31C follows the guide groove 31Ca. mobile. At this time, the movement (rotation) trajectory of the grab roller 32A is along the guide groove The trajectory of 31Ca. In addition, as shown in FIG. 30(b), the movement trajectory extends beyond the predetermined clamping position. In addition, modification examples 1 to 3 of the fifth embodiment described later are also the same, and therefore illustrations and descriptions are omitted.

Furthermore, at the position (second position) where the guide shaft 31C is located on the other side of the guide groove 31Ca shown in FIG. 30(b), the rotation of the grip roller 32A is restricted. In this state, the rope CD is not clamped by the grasping rollers 32A, 32B or is only clamped with a relatively weak force. Even if the rope CD moves further in the release direction, the torque for rotating the grasping roller 32B is insufficient, thereby grasping The roller 32B does not rotate. Therefore, the resistance applied by the resistance imparting portion RA is not provided.

In summary, in the process of changing from the state of FIG. 30(a) to the state of FIG. 30(b), although resistance is imparted to the rope CD by the resistance imparting portion RA, the resistance is in the state of FIG. 30(b) The endowment department RA does not play a role. Furthermore, in the state of FIG. 30(b), the distance between the outer cylinder 240A and the knurling roller 240 is larger than that in the state of FIG. 30(a), so the clamping force of the cord CD becomes weak. Thereby, since the braking force applied to the cord CD is released, the free movement of the cord CD is realized. Furthermore, in the process of changing from the state of FIG. 30(b) to the state of FIG. 30(a), the resistance imparting portion RA imparts resistance to the rope CD. In the state of FIG. 30(a), the rope CD is clamped. At the same time, the resistance imparting part RA functions.

In addition, the sliding resistance when the inner tube 42A and the outer tube 240A rotate relative to each other may be a resistance that cannot rotate relatively when the guide shaft 31C rotates to the first position. In view of this, the inner tube 42A and the outer tube 240A of the grip roller 32A may be configured as follows.

In one example, through the pressing process of pressing the inner cylinder 42A into the outer cylinder 240A as shown in FIG. 32(a), the gripping roller 32A shown in FIG. 32(b) is realized. In another example, as shown in FIG. 33, an elastic portion 42Aa is provided on the surface of the inner tube 42A, whereby a desired resistance can be obtained. In another example, as shown in FIG. 34, a spring member 42Ab that applies pressure to the outer tube 240A is provided on the inner tube 42A, whereby a desired resistance can be obtained. Furthermore, in order to stabilize the resistance, lubrication with strong lubricating oil can also be used.

<Modification 1 of the Fifth Embodiment>

Furthermore, as shown in FIG. 35, the brake device 5100 of the present modification example may be provided with a fixing portion provided on the housing 10Aa in order to position the guide shaft 31C in the first position in addition to when the cord CD is moved in the release direction. Between the 441A and the guide shaft 31C, a torsion spring 31Cb as an urging member in which a coil portion is wound around the rotating shaft 31B is arranged, and the guide shaft 31C is urged by the torsion spring 31Cb. Here, in this modified example, the guide groove 31Ca corresponds to a restriction groove, and extends beyond the nipping position in the initial state of the nipping member (grab roller 32A). In addition, in FIG. 35(a), the predetermined clamping position is indicated by a dotted circle.

In this way, in this modification, the restriction groove extends beyond the gripping position of the grip roller 32A in the initial state, so that even if the diameter of the grip roller 32A becomes smaller due to wear, it can be gripped appropriately. Rope CD.

<Modification 2 of the Fifth Embodiment>

Next, the brake device 5200 of the second modification of the fifth embodiment will be described with reference to FIGS. 36 and 37. As shown in Figs. 36 and 37, the brake device 5200 of the present modification example has a configuration in which the motion conversion portion DT and the resistance imparting portion RA are arranged side by side in the left-right direction (direction perpendicular to the paper surface). Hereinafter, the outline of this modified example will be described.

As shown in FIG. 36, the movement conversion portion DT is composed of a gripping roller 32A and a gripping roller 32B. The gripping roller 32A is composed of an inner tube 42A and an outer tube 240A, and the gripping roller 32B is rotatably mounted on the shaft core 31.的knurled roller 240 constituted. The inner tube 42A and the outer tube 240A have the same configuration as in FIGS. 28 and 30, and are configured to be rotatable relative to each other. In addition, a rotating shaft 31B and a guide shaft 31C are provided on the side surface of the inner cylinder 42A. In this modified example, the gripping roller 32A is also configured to be rotatable with the rotating shaft 31B as the center. In addition, the guide groove 31Ca is provided on the side surface of the housing 440B at a position where the grasping roller 32B can change to the state of clamping the cord CD and the state of releasing (unclamping). Here, in this modified example, the gripper roller 32A and the gripper roller 32B constitute a nip body. In addition, in this modification, the guide groove 31Ca corresponds to a restriction groove, and extends beyond the nip position of the nip body (the grab roller 32A and the grab roller 32B) in the initial state. In addition, in FIG. 36(a), the predetermined clamping position is indicated by a dotted circle.

Furthermore, in this modification, a pinion gear 50B is provided on the side surface of the outer cylinder 240A. The pinion gear 50B has a rotation axis in a vertical direction with respect to the paper surface. Furthermore, it is formed so as to mesh with the teeth provided inside the transmission gear 261B of the resistance imparting portion RA. In addition, a speed increasing gear 280B is provided at a position that meshes with the teeth on the outer side of the transmission gear 261B. The speed increasing gear 280B is rotatably mounted on the support shaft 263B. Furthermore, as shown in FIG. 36(b), a counterweight bracket 320B that rotates integrally with the speed-increasing gear 280B is provided on the same axis as the speed-increasing gear 280B. Also, the balance weight 340B is held by the balance weight support 320B. Here, in this embodiment, the four balance weights 340B are held by the balance weight bracket 320B.

Since the weight support 320B is provided so as to rotate integrally with the speed-increasing gear 280B, the weight support 320B also rotates along with the rotation of the speed-increasing gear 280B. Thereby, the weight 340B held by the weight holder 320B revolves.

As shown in FIG. 37, in this modification, the three cords CD are clamped horizontally. The cords CD are inserted into the cord insertion holes 14A constituting the motion conversion portion DT. In addition, the pinion gear 50B protrudes to the outside from the housing 440B of the motion conversion part DT, and meshes with the transmission gear 261B of the resistance imparting part RA, which is arranged adjacent to the motion conversion part DT.

Therefore, when tension is applied to the rope CD in the braking direction, the friction force generated between the outer cylinder 240A and the rope CD causes the grab roller 32A to rotate in the clockwise direction with the rotating shaft 31B as the center. At this time, along with the rotation of the grab roller 32A, the pinion gear 50B provided on the outer cylinder 240A also rotates clockwise. Then, the transmission gear 261B meshed with the pinion gear 50B starts to rotate in the counterclockwise direction. Thereby, the speed increasing gear 280B meshed with the transmission gear 261B starts to rotate in the clockwise direction. At this time, since the diameter of the speed increasing gear 280B is smaller than the diameter of the transmission gear 261B, the rotation of the pinion gear 50B caused by the movement of the cord CD is increased and transmitted to the speed increasing gear 280B. At this time, the inner tube 42A and the outer tube 240A rotate integrally by the sliding resistance of both.

Then, through the rotation of the speed increasing gear 280B, the weight 340B starts to revolve in the clockwise direction. Then, the counterweight 340B abuts against the inner wall of the housing 10Aa of the resistance imparting portion RA, The braking force for the movement of the cord CD can be exerted. Furthermore, in the state of FIG. 36(a), the guide shaft 31C abuts against the guide groove 31Ca, and the rotation of the inner cylinder 42A is prevented. Then, when further tension is applied to the rope CD in the braking direction, the outer tube 240A starts to rotate relative to the inner tube 42A. Thereby, the braking force from the resistance imparting portion RA can be exerted while clamping the cord CD.

On the other hand, when tension is applied to the cord CD in the release direction, the grasping roller 32A rotates counterclockwise with the rotating shaft 31B as the center. At this time, the pinion gear 50B, the transmission gear 261B, and the speed-increasing gear 280B rotate opposite to the rotation when tension is applied to the brake of the rope CD. In the state of FIG. 36(b), the guide shaft 31C abuts against the guide groove 31Ca, and the rotation of the inner cylinder 42A is prevented. Then, the outer cylinder 240A continues to rotate relative to the inner cylinder 42A. In this state, the distance between the outer cylinder 240A and the knurled roller 240 becomes larger than that in FIG. 36(a), and the cord CD cannot be clamped sufficiently. Furthermore, since the cord CD cannot be clamped sufficiently, the rotation of the outer cylinder 240A is also suppressed. Thereby, the rotation caused by the movement of the cord CD cannot be transmitted to the resistance imparting part RA.

In this way, in this modification, the restricting groove extends beyond the gripping position of the grab roller 32A or the grab roller 32B in the initial state, even if the diameter of the grab roller 32A or the grab roller 32B becomes smaller due to wear. It is also possible to clamp the cord CD appropriately.

<Modification 3 of the Fifth Embodiment>

Next, the brake device 5300 of the third modification of the fifth embodiment will be described with reference to FIGS. 38 to 40. As shown in FIGS. 36 and 37, the brake device 5300 of this modification is formed in a configuration in which the motion conversion portion DT and the resistance imparting portion RA are arranged side by side in the left-right direction (direction perpendicular to the paper surface). Hereinafter, the outline of this modified example will be described.

As shown in FIG. 38, the movement conversion portion DT is composed of a gripping roller 830 and a gripping roller 840. The gripping roller 830 is composed of an inner tube 830A and an outer tube 830B. The gripping roller 840 is rotatably mounted on the shaft core 41.的knurling roller 43. 31, the inner tube 830A and the outer tube 830B are configured such that the inner tube 830A is rotatably mounted on the rotating shaft 831, and the inner tube 830A and the outer tube 830B can rotate relative to each other and For torques below the specified limit, the sliding resistance is used to perform integral rotation. However, unlike FIG. 31, the rotating shaft 831 is provided at the center of the grip roller 830 and is axially supported by the housing 810A. In addition, at a position eccentric from the rotation shaft 831, a guide shaft 850 protrudes toward both sides in the axial direction. In addition, in this modification, as shown in FIG. 39, the gripping roller 840 is rotatably held in the support groove 821 (refer to FIG. 39) of the movable housing 820 that can move in parallel in the vertical direction. Here, in this embodiment, the grip rollers 830 and 840 constitute a pair of nipping members (clamping bodies).

In addition, in this embodiment, the resistance imparting section RA is also a member that includes a centrifugal governor and transmits the rotation of the rotating shaft 831 to the centrifugal governor to brake it. It is the same as the second modification described above, the grip roller 830 The rotation of the outer cylinder 830B is transmitted to the resistance imparting part RA via the pinion gear 50B (refer to FIG. 37). Regarding the structure of the resistance imparting portion RA, the structure described in the above-mentioned embodiment can be appropriately used.

The moving housing 820 includes a pair of parallel plates 822 formed at both ends of the grab rollers 830 and 840, and a support groove 821 is formed in each parallel plate 822 (refer to FIG. 39). In addition, a guide groove 823 that opens upward is formed at the center in the front-rear direction above the parallel plate 822. Furthermore, the parallel plate 822 has a long hole 824 into which the guide shaft 850 can be inserted at a position in front of the guide groove 823, and the long hole 824 is formed in an orientation in which the guide shaft 850 can move in the front-rear direction. Here, in this modified example, the guide groove 823 corresponds to the restriction groove, and extends beyond the nipping position in the initial state of the nipping body (gripping rollers 830 and 840). In addition, in FIG. 38(b), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn.

Here, in this modified example, in a state where tension is not applied to the rope CD (normal state), as shown in FIG. 38(a), the rope CD is configured to contact only the upper grip roller 830 and contact the grip roller 840 does not touch.

With the above configuration, when the rope CD is moved backward (right in FIG. 38) without applying tension to the rope CD (normal state), the outer tube 830B of the grab roller 830 is about to face the reverse direction in FIG. 38(a) It rotates in the clockwise direction (arrow X direction), but due to a pair of clamping parts, namely the grab rollers 830 and 840, the The grip cord CD (also refer to Figure 39(a) and Figure 40(a)), therefore, the movement of the cord CD is not sufficiently transmitted as the rotation of the grab roller 830 (outer cylinder 830B), so the rotation of the outer cylinder 830B will not It is transmitted to the resistance imparting part RA and imparts resistance to the rope CD. In addition, in this case, even if the outer cylinder 830B rotates, the guide shaft 850 provided in the inner cylinder 830A abuts against the long hole 824 of the movable housing 820, and the movable housing 820 is restricted by the housing 810A in the front-rear direction. The inner cylinder 830A becomes unable to rotate in the counterclockwise direction.

On the other hand, when the cord CD moves forward (leftward in FIG. 38), as shown in FIG. 38(b), the outer tube 830B of the grip roller 830 rotates in the clockwise direction (arrow Y direction). At this time, since there is sliding resistance between the outer cylinder 830B and the inner cylinder 830A, the outer cylinder 830B and the inner cylinder 830A start to rotate integrally. Then, while the inner cylinder 830A rotates, the guide shaft 850 provided in the inner cylinder 830A rotates in the clockwise direction and pushes the upper surface of the elongated hole 824 of the movable housing 820, thereby pushing the movable housing 820 upward (refer to Figure 38(b), Figure 39(b), Figure 40(b)). As a result, the gripping roller 840 held on the moving housing 820 moves upward, that is, close to the cord CD, and cooperates with the gripping roller 830 to clamp the cord CD.

When the cord CD moves further forward (leftward in FIG. 38) in this state, the movement of the cord CD is transmitted as the rotation of the outer cylinder 830B. However, after the gripping roller 840 abuts the cord CD, since the movable housing 820 cannot move further upward, the inner cylinder 830A also becomes unable to rotate, and therefore only the outer cylinder 830B rotates relative to the inner cylinder 830A.

The result of the above is that when the rope CD is moved forward (the left side of Fig. 38) with the grip roller 830 and the grip roller 840 in Fig. 38(b) sandwiching the rope CD, the movement of the rope CD acts as an outer cylinder The rotation of 830B is sufficiently transmitted, the resistance imparting portion RA imparts a braking force to the rotation of the outer cylinder 830B, and the cord CD is braked.

In this way, in this modification, the restricting groove extends beyond the gripping position of the gripping roller 830 or the gripping roller 840 in the initial state, even if the diameter of the gripping roller 830 or the gripping roller 840 becomes smaller due to wear. It is also possible to clamp the cord CD appropriately.

6. Sixth Embodiment

Next, the braking device 6000 according to the sixth embodiment of the present invention will be described with reference to FIGS. 41 to 43. The braking device 6000 in this embodiment is similar to the braking device 1000 in the second embodiment. However, the main difference of the brake device 6000 of this embodiment is that the axial ends of the shaft cores of the pair of clamping members are held by the link mechanism 720 composed of a pair of connecting plates 721 and 722. In addition, in the following description, the same reference numerals are given to members having the same configuration as those of the first embodiment, and parts with different configurations are mainly described.

Here, the brake device 6000 of the sixth embodiment is different from the first embodiment to the fifth embodiment in that it is an embodiment that does not have a restricting groove. In addition, in FIG. 43(a), the predetermined clamping position is indicated by a dotted circle, and the following description is to describe the operation after the clamping body is worn.

As shown in FIG. 41, one pair of nip members in the present embodiment is composed of a tension transmission roller 30 provided with a knurled roller 240 and an idle roller 40 provided with a roller portion 42. The shaft core 31 of the tension transmission roller 30 extending in the vertical direction has its axial ends supported by one end of a pair of connecting plates 721. The shaft core 41 of the idler roller 40 extending in the vertical direction is similarly supported. It is axially supported by one end of a pair of connecting plates 722 toward both ends. In addition, the shaft core 31 of the tension transmission roller 30 is the same as the second embodiment described above, and a pinion gear 50 is attached to the end on the opposite side to the tension transmission roller 30.

The connecting plate 721 and the connecting plate 722 are connected in a relatively rotatable manner via a shaft 723 inserted into a hole formed in the center of the plate, forming a link mechanism 720. In addition, the other ends of the connecting plates 721 and 722 are provided with connecting pins 724 and 725 (refer to FIG. 42) that extend in the vertical direction and connect the connecting plates 721 and 722.

Furthermore, as shown in FIG. 43, the connecting pin 724 and the connecting pin 725 are pressed in the direction of approaching each other by a torsion spring 726 as an urging member in which the coil portion is wound on the shaft 723. Therefore, the connecting plate 721 and the connecting plate 722 are urged in such a manner that the tension transmission roller 30 and the idler roller 40 held by each are rotated with the shaft 723 as the center in a direction in which the tension transmission roller 30 and the idler roller 40 respectively held close to each other, and as a result, The rope CD is clamped by these rollers 30,40. In addition, although not shown in FIG. 41, the shaft 723 is axially supported by the housing 10A.

With the above configuration, in a state (normal state) where no tension is applied to the cord CD as shown in Figure 43(a), the tension transmission roller 30 and the idler roller 40 are urged by the torsion spring 726 via the link mechanism 720, whereby This clamping rope CD. When the rope CD moves forward (the left side of FIG. 43) in this state, the movement of the rope CD is transmitted to the tension transmission roller 30, and the rotation of the tension transmission roller 30 is sequentially transmitted to the gear carrier 260 with internal teeth, the planetary gear 280. A balance weight support 320 with a sun gear, so that the balance weight 340 (refer to FIG. 2) is rotated, and the rotation resistance of the balance weight 340 is used to apply a braking force to the rope CD. That is, in the present embodiment, the clamping member also clamps the cord CD along with the movement of the holding member, that is, the link mechanism 720 (the connecting plate 721 and the connecting plate 722). At this time, the movement trajectory of the roller portion 42 and the knurled roller 240 is as shown by the double arrow in Fig. 43(a). In addition, as shown in FIG. 43(a), the movement trajectory extends beyond the predetermined clamping position.

On the other hand, when the cord CD moves backward (right in FIG. 43), as shown in FIG. 43(b), the tension transmission roller 30 held by the connecting plate 721 and the idle roller 40 held by the connecting plate 722 are accompanied by The movement of the cord CD opposes the urging force of the torsion spring 726 via the link mechanism 720 and rotates in a direction in which the distance between the tension transmission roller 30 and the idle roller 40 increases with the shaft 723 as the center. Thereby, the grip of the cord CD by the gripping body becomes weak, and the resistance applied to the cord CD via the resistance imparting portion RA of the tension transmission roller 30 is reduced.

In addition, in the above-mentioned embodiment, the link mechanism 720 is configured such that the pair of connecting plates 721 and 722 are arranged on both ends in the axial direction. However, it may be configured such that the pair of connecting plates 721 and 722 are arranged only on one end of the axial direction. .

Various embodiments have been described above, but the present invention is not limited to this, and the shielding device 100A of the present invention may have a different structure from the shielding device 100A of the above-mentioned embodiment. For example, the solar shading device of the present invention may also be a roller blind wound with a curtain, or a shutter in which a plurality of louvers are raised and lowered. In addition, as shown in FIG. 44, the brake device 1000 may be fixed to the window frame 110 using screws 111 or the like. In addition, the brake device 1000 may be provided inside the handle 109. Furthermore, the braking device 1000 may be provided at any position on the passage path of the lifting rope 102.

(Industrial availability)

As described above, according to the present invention, it is possible to provide a brake device capable of holding the rope appropriately even when the diameter of the holding body holding the rope becomes smaller due to wear, and it is possible to prevent the deterioration of the components.

1000: Braking device

200: Arrange parts

10A: Shell

220: Slider

SP: coil spring

31, 41: Axle

40: Idling roller

42: Roller

240: Knurled roller

50: pinion

241: Washer

260: Gear carrier with internal teeth

280: Planetary gear

300: plate

320: Balance weight bracket with sun gear

340: balance weight

70: Pedestal

708: Cylindrical part

Claims (16)

A brake device that brakes movement in the longitudinal direction of a rope. The brake device is characterized by having a clamping body provided with a pair of clamping members for clamping the rope, and at least One is configured to move along a predetermined movement trajectory, the gripping body grips the rope at a predetermined gripping position of the movement trajectory, and the movement trajectory extends beyond the gripping position; The clamping bodies are all moved along the movement track, and the movement track is constituted in such a way that the extension lines thereof cross each other. The braking device described in the first item of the scope of patent application, wherein the moving track extends in a direction toward the rope. According to the braking device described in claim 1 or 2, wherein the movement trajectory is a movement trajectory of at least one of the clamping members along a restriction groove, and the restriction groove is opposite to the clamping member The movement of at least one party is restricted. The brake device described in claim 3, wherein the brake device has a housing that includes at least one of the clamping members inside and is provided with the restriction groove. The brake device described in claim 4, wherein the clamping body is composed of a first clamping member and a second clamping member, the first clamping member has a shaft, and the restricting groove is The shaft is formed so as to be able to approach the rope, and the clamping position is a position away from the end of the restricting groove on the approaching direction side of the rope. The braking device described in item 5 of the scope of patent application, wherein: The second clamping member has a shaft, and the restriction groove system is configured to move along the restriction groove through the shafts of the first clamping member and the second clamping member, so that it can be clamped at a predetermined clamping position. Hold the rope. In the braking device described in item 6 of the scope of patent application, two of the restriction grooves are formed in the housing, and at least one of them is arc-shaped. In the braking device described in item 7 of the scope of patent application, the two restricting grooves are configured to be inclined with respect to the moving direction of the rope. In the braking device described in item 7 of the scope of the patent application, the two restricting grooves have different curvatures. The brake device described in the scope of patent application, wherein the shaft is arranged in a substantially vertical direction. According to the braking device described in item 5 of the scope of the patent application, the second clamping member is constituted by a clamping plane. According to the braking device described in claim 11, the clamping plane is a plane that is fixed before and after the movement of the first clamping member. The brake device described in claim 5, wherein the brake device has an urging member, and the urging member applies a force to the first clamping member from a release position where the rope is released to a position where the rope is clamped. Apply force to the clamping position. The brake device according to the third item of the scope of patent application, wherein the brake device has a guide wall formed along the edge of the restriction groove. A shielding device characterized by comprising: the braking device described in items 1 to 14 of the scope of patent application, and a shielding member suspended in such a way that it can be raised and lowered by the movement of the rope. A shielding device, characterized by comprising: The braking device described in item 11 or 12 of the scope of patent application, a shielding member suspended in a manner that can be raised and lowered by the movement of the rope, and an upper beam that contains the braking device inside; the clamping plane is The bottom surface of the upper beam.

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