JP4975657B2 - Blind control tool - Google Patents

Description

  The present invention relates to a blind operating tool for operating a blind shielding material.

  Conventionally, as this kind of operating tool for blinds, what was described in patent document 1, for example is known. This blind operating tool is an operating rod for operating a starting shaft of a rotating mechanism linked to a rotating shaft for opening / closing of a slat and a tilt adjustment, and has a hooking claw on the upper portion thereof. The hook-shaped hooking hook is hooked on a ring attached to the lower end of the starting shaft. Then, by rotating the operating rod in the twisting direction, the rotation is transmitted to the rotating mechanism via the starting shaft, so that the opening and closing of the slat and the inclination adjustment can be performed.

Japanese Utility Model Publication No. 62-88094

  However, in the configuration of Patent Document 1, since the hooking claw is only hooked on the ring, there is a problem that the operating rod may accidentally drop from the starting shaft during the operation. In particular, as in the case of a vertical blind, the operation rod is not only rotated in the twisting direction to rotate the louver, but is also used for blinds that move the operation rod left and right to expand and collapse the louver. Since the rod is used while being tilted to the left and right while being pushed or pulled, the problem of dropping of the operation rod becomes remarkable.

  On the other hand, if the operating rod and the starting shaft are firmly connected so as not to fall off, there is a problem that the connecting operation becomes complicated.

  This invention is made | formed in view of this subject, and it aims at providing the operating tool for blinds which can prevent drop-off and can also perform connection easily.

In order to achieve the above-mentioned object, the invention according to claim 1 transmits the driving force to the driving means capable of changing the open / close state of the shielding material provided in the support member for supporting the blind shielding material by hanging. A blind operating tool connected to a receiving portion formed at one end of the transmission shaft, and operable to apply a driving force to the driving means,
The upper end of the blind operating tool has a hook part formed with a part of an opening through which the receiving part can be inserted, and a closing member for closing the opening of the hook part. The closing member is movable between a state where the opening of the hook portion is opened and a state where the opening is closed.

  The invention according to claim 2 has a bifurcated portion in which the closing member according to claim 1 is bifurcated. When the closing member closes the opening, the forked portion of the closing member is The periphery of the opening is sandwiched from both sides.

  According to a third aspect of the present invention, the closing member according to the first or second aspect has a locking shaft, and when the closing member is in a state of opening the opening, the locking shaft is in the hook portion. The dimension of the cross-sectional shape of the locking shaft is set to be larger than the minimum opening size of the opening, and the locking shaft can pass through the minimum opening size portion of the opening using elastic deformation of the hook. When the closing member is in the state of closing the opening, the locking shaft passes through the minimum opening size portion and is held by the opening end facing the opening of the hook portion. .

  According to a fourth aspect of the present invention, the closing member according to the third aspect is pivotally supported by the hook portion so as to be rotatable, and the closing member is rotated so that the locking shaft passes through the minimum opening dimension portion. When it is moved, it is characterized in that further rotation is prevented by the opening end facing the opening of the hook.

  According to the present invention, since the closing member is movable between the state in which the opening is opened and the state in which the opening is closed, the connection between the receiving portion and the hook portion can be performed in the state where the closing member opens the opening. After that, the closing member closes the opening to prevent the hook from falling off the receiving part. Therefore, it is possible to easily perform the connecting work, and it is possible to prevent the blind operating tool from falling off when an operating force is applied to the blind operating tool.

  According to the second aspect of the present invention, the opening portion can be prevented from being deformed by sandwiching the periphery of the opening portion from both sides by the forked portion, and the strength of the hook portion can be improved. Therefore, even when a torsional force is applied to the blind operating tool, it is possible to ensure sufficient strength to prevent the hook portion from being damaged.

  According to the invention of claim 3, the locking shaft cannot be easily returned by passing the minimum opening dimension portion of the opening by utilizing the elastic deformation of the hook portion, A closed state can be maintained.

  According to the fourth aspect of the present invention, when the locking shaft passes through the minimum opening size portion, the closing member is prevented from further rotation by the opening end portion facing the opening portion of the hook portion. Can be held.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall front view of a blind to which a blind operating tool of the present invention is applied. In this example, a vertical blind is exemplified as the blind.

  The vertical blind 10 has a plurality of carriers (not shown) that can move in the head rail 12 as a support member. The carrier at the end is the master carrier, and a louver 14 as a shielding material is suspended from a hook provided on a carrier other than the master carrier. Starting from the master carrier, the carriers are sequentially linked to adjacent carriers with a predetermined interval being maximally variable, and each carrier can be pulled by the master carrier.

  In order to cause the louver 14 to rotate around the vertical axis, a drive shaft (not shown) is provided along the head rail 12 in the head rail 12. The carrier is movable in the axial direction with respect to the drive shaft, and a hook provided on the carrier is connected to the drive shaft via a worm gear. When the drive shaft rotates, the rotation is transmitted to the hook that suspends the louver 14 via the worm gear, and the louver 14 can rotate.

  The master carrier is provided with a transmission shaft 18 instead of a hook, and the transmission shaft 18 is connected to the drive shaft via a worm gear. The transmission shaft 18 extends perpendicularly to the head rail 12 and the drive shaft, that is, in the vertical direction, and a completely closed ring 18a is formed at the lower end thereof. And the upper end part of the operating tool 20 for blinds of this invention is connected with this ring 18a so that attachment or detachment is possible.

  In this case, the drive shaft, master carrier, and carrier constitute drive means. By rotating the blind operation tool 20 in the twisting direction, the rotation can be transmitted to the drive shaft via the transmission shaft 18 and the louver 14 can be rotated around the vertical axis. By moving 20 along the head rail 12 and pulling another carrier by the master carrier, it is possible to cause the louver 14 to expand, in which a plurality of louvers 14 spread in the longitudinal direction of the head rail 12, The blind operating tool 20 is moved in the opposite direction along the head rail 12 and the other carrier is pushed out by the master carrier, thereby causing the louver 14 to be folded at one end in the longitudinal direction of the head rail 12 to be folded. Can do.

  As shown in FIG. 2, the blind operating tool 20 has a soft part 21 made of a soft material in order to give a shock-absorbing effect at the lower end thereof, and is made of a hard material other than the soft part, At its upper end, it has a hook-like hook portion 22 to be engaged with the ring 18a at the lower end of the transmission shaft 18.

  As shown in FIGS. 3 and 4, the hook-shaped hook portion 22 has a substantially C shape in which an opening 22 a is formed only in a part thereof, but may have an arbitrary shape other than the substantially C shape. Is possible. Near the opening 22a, a bearing recess 22b is formed on the inner peripheral surface of the substantially C-shaped hook portion 22 that draws a substantially arc shape. In the opening 22a, the interval between the inlets 22c is the narrowest, and the lower opening end facing the opening 22a of the hook 22 is inclined 22d so as to move away from the bearing recess 22b as it goes downward. It has become. And the base part of the closing lever 24 which is a closing member is pivotally supported by the bearing recessed part 22b so that rotation is possible.

  That is, the closing lever 24 includes a pair of side plates 24a and 24a, and two base shafts 24b and locking shafts 24c that are orthogonal to the side plates 24a and 24a and connect the two side plates 24a and 24a. The side plates 24a and 24a extend to the tip side from the locking shaft 24c, and the extended portion constitutes a bifurcated portion 24d having a bifurcated shape. The base shaft 24b is fitted in the bearing recess 22b so as to be rotatable.

  When the closing lever 24 is rotated around the base shaft 24b, the locking shaft 24c is dimensioned so that it can be inserted into the opening 22a of the hook portion 22. More specifically, the diameter of the circular shaft cross section of the locking shaft 24c is slightly larger than the minimum opening width of the inlet 22c portion of the opening 22a. Therefore, the locking shaft 24c causes the hook portion 22 to be somewhat elastic. It can pass through the inlet 22c while being deformed. The length of the locking shaft 24 c is substantially equal to the thickness of the hook portion 22.

  In the blind operating tool 20 configured as described above, when performing an operation of attaching to the transmission shaft 18, as shown in FIG. 5, the locking shaft 24c of the closing lever 24 is on the side opposite to the opening 22a. It arrange | positions in the position which contact | abuts to the internal peripheral surface of the hook part 22. FIG. At this time, the bifurcated portion 24d composed of the pair of side plates 24a and 24a can prevent the closing lever 24 from inadvertently moving by sandwiching the hook portion 22, and the opening portion 22a is opened. Can be held. In this state, the ring 18a of the transmission shaft 18 is passed through the opening 22a. Next, the closing lever 24 is rotated about the base shaft 24b, and the inlet 22c of the opening 22a is passed through the locking shaft 24c while the hook portion 22 is elastically deformed. When the locking shaft 24c passes through the inlet 22c, the locking shaft 24c is sandwiched between the upper opening end and the lower opening end facing the opening 22a and stops by the elastic restoring force of the hook portion 22 (FIG. 6). ). Thus, the locking shaft 24c closes the opening 22a. At this time, the inclined surface 22d, which is the lower opening end of the opening 22a, abuts the locking shaft 24c, and the locking shaft 24c is in the stop position in order to prevent further rotation of the closing lever 24. It is hold | maintained and the state which obstruct | occludes the opening part 22a is hold | maintained. The bifurcated portion 24d sandwiches the periphery of the opening 22a of the hook portion 22 from both sides.

  Thus, the opening 22a is reliably closed, so that the blind operation tool 20 can be operated from the transmission shaft 18 even when the blind operation tool 20 is moved to the left or right while being rotated in the twisting direction or tilted to the left or right. It is possible to prevent the tool 20 from inadvertently dropping off.

  Further, in this closed state, the bifurcated portion 24d sandwiches the periphery of the opening 22a from both sides, thereby preventing deformation of the hook portion 22 even when a torsional force is applied to the blind operating tool 20. The strength in the vicinity of the portion 22a can be ensured, and breakage of the hook portion can be prevented.

  Thus, it can comprise only the hook part 22 and the obstruction | occlusion lever 24 as a structure for connecting with the transmission shaft 18, and the elastic member, such as a spring, is unnecessary in that case, and the elasticity which the raw material of the hook part 22 has is provided. Since only power is used, it can be constructed inexpensively and robustly.

  The above has described an example of the blind operating tool 20 used for the vertical blind. This vertical blind has operations such as not only rotation but also movement in the left-right direction. Therefore, the present invention is particularly effective. However, the present invention is not limited to this. For example, a horizontal blind as shown in FIG. It can also be used as an operation tool. In the horizontal blind 30, a large number of slats 34 that are shielding materials are suspended and supported by a ladder cord 36 from a head box 32 that is a support member. A slat rotation mechanism (not shown) housed in the head box 32 constitutes a driving means. A transmission shaft 18 for transmitting a driving force to the slat rotation mechanism is suspended from the head box 32. The transmission shaft 18 is connected to the transmission shaft 18, and the blind operation tool 20 of the present invention is used as an operation tool for rotating the slat 34. Can be applied. By rotating the blind operation tool 20 in the twisting direction, the rotation is transmitted to the slat rotation mechanism via the transmission shaft 18, and the ladder cord 36 tilts, whereby the slat 34 rotates.

It is a whole front view of the vertical blind as a blind to which the operating tool for blinds of this invention is applied. It is a whole front view of the operating tool for blinds of this invention. It is a principal part perspective view of the operating tool for blinds of this invention, and a transmission shaft. It is a disassembled perspective view of the operating tool for blinds of this invention. It is the (a) perspective view in the open state of the operation tool for blinds of the present invention, (b) front view, (c) left side view. It is the (a) perspective view in the obstruction | occlusion state of the operating tool for blinds of this invention, (b) Front view, (c) Left view. It is a whole front view of the horizontal blind as a blind to which the operating tool for blinds of this invention is applied.

Explanation of symbols

10, 30 Blind 12 Head rail (support member)
14 Louver (shielding material)
18 Transmission shaft 18a Ring (receiving part)
20 Blind operating tool 22 Hook 22a Opening 22c Inlet 24 Closing lever (closing member)
24c Locking shaft 24d Forked part 32 Head box (supporting member)
34 Slat (shielding material)

Claims (4)

A transmission shaft for transmitting a driving force to a driving means capable of changing the open / closed state of the shielding material provided in the support members (12, 32) for suspending and supporting the shielding material (14, 34) of the blind (10, 30). A blind operating tool connected to a receiving portion (18a) formed at one end of (18) and operable to apply a driving force to the driving means,
A hook part (22) formed with a part of an opening part (22a) through which the receiving part can be inserted at the upper end part of the blind operating tool, and a closing member for closing the opening part of the hook part (24) and the closing member is movable between a state in which the opening of the hook portion is opened and a state in which the opening is closed.   The closing member (24) has a bifurcated portion (24d) having a bifurcated shape, and when the closing member closes the opening, the forked portion of the closing member surrounds the opening from both sides. The blind operating tool according to claim 1, wherein the operating tool is blind.   The closing member has a locking shaft (24c), and when the closing member is in a state of opening the opening, the locking shaft is in the hook portion, and the dimension of the sectional shape of the locking shaft is The locking shaft is set to be larger than the minimum opening size of the opening, and the locking shaft can pass through the minimum opening size of the opening using the elastic deformation of the hook, and the closing member closes the opening. 3. The blind operating tool according to claim 1, wherein the locking shaft passes through the minimum opening size portion and is held at the opening end facing the opening of the hook portion. The closing member is pivotally supported by the hook portion, and faces the opening of the hook portion when the closing member is rotated so that the locking shaft passes through the minimum opening size portion. 4. The blind operating tool according to claim 3, wherein the opening end portion prevents further rotation.

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