JP2591165Y2 - Elevating cord lock mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating cord lock mechanism used for fixing an elevating cord for elevating a blind, a curtain, a screen or the like at an arbitrary lowered position.

[0002]

2. Description of the Related Art Conventionally, as an elevating cord lock mechanism for adjusting the blind in the above-described example, for example, a plurality of elevating cords are vertically arranged from above in a case body fixed to a right end of a head rail. At the same time as inserting, the slider housed in the case body is lowered to the unlock position, and the operating part of the roll receiver held by the slider is pressed against the coil spring, so that the pinch roller bearing on the slider side The pinch rollers bearing on the roll receiving side are separated from each other at appropriate intervals, and a plurality of lifting / lowering cords are vertically inserted and pinched between the pinch rollers from above.

As described above, since a plurality of lifting cords are clamped by a pair of pinch rollers pivotally supported by the slider, the slider is integrally moved up and down by the lowering operation of the lifting cords, and the case body is moved. There is an elevating cord lock mechanism (JP-A-4-242613) in which a plurality of elevating cords are locked and unlocked by a cam mechanism provided on the surface facing the slider and the slider.

[0004]

However, in the above-described lifting cord lock mechanism, a plurality of lifting cords are vertically inserted through insertion holes formed in the center of the upper surface of the case body. It is very difficult to visually recognize the inserted state of the lifting cord from the insertion hole. and,
Even if the lifting cord is bent or caught on the way, the insertion state cannot be corrected, and the insertion space becomes narrower as the number of lifting cords increases, so it is possible to insert multiple lifting cords straight. Have difficulty.

In addition, the operation of the roll receiver held by the slider must be constantly pressed with one hand until the operation of inserting the lifting cord is completed, so that it takes time and effort to insert the lifting cord. Have a point.

In view of the above problems, the present invention separates a pair of holding rollers pivotally supported by a movable body by a cam provided on the case body at appropriate intervals, and then opens the case body and the movable body.
By inserting and setting a plurality of elevating cords between the holding rollers from the side, the work of inserting the elevating cords can be performed easily and easily, and the elevating cord lock mechanism that can improve the workability at the time of assembling the cords. For the purpose of providing.

[0007]

According to a first aspect of the present invention, there is provided an elevating cord locking mechanism comprising a side surface between a pair of holding rollers.
And the side of the movable body corresponding to
The side of the case main body, the lifting cord from the side
Is a lifting cord lock mechanism that is opened parallel to the direction in which the lifting cord is stretched so that it can be inserted and set in the movable body .

The lifting cord lock mechanism according to a second aspect of the present invention, in combination with the structure according to the first aspect, includes a movable portion on a wall portion of the case body facing the movable body moved to the mesh release position. A roller separating hand that separates each of the holding rollers that are pivotally supported on the body at appropriate intervals where the lifting coat can be inserted.
It is a lifting cord lock mechanism provided with a step .

[0009]

According to the first aspect of the present invention, since the lifting cord is inserted and set between the holding rollers from the open side surfaces of the case body and the movable body, the work of inserting the lifting cord between the holding rollers can be easily performed. .

According to a second aspect of the present invention, in addition to the operation of the first aspect, the movable body held by the case body is moved to the disengagement position, and the roller separation provided at the same position is moved. Since the holding rollers pivotally supported by the movable body are separated at appropriate intervals by means, there is no need to hold the pair of holding rollers in a separated state, and each holding roller is held from the open side of the case body and the movable body. Since the elevating cord is inserted and set between the rollers, the assembling work of the elevating cord can be performed easily and easily.

[0011]

According to the invention, since the same side surface corresponding to the gap between the case body and the holding roller of the movable body is opened, the insertion state of the lifting cord can be visually recognized from the side, and the insertion state of the lifting cord can be checked. In addition to being easily corrected, the lifting cord can be reliably inserted and set between the holding rollers, and the workability at the time of assembling the cord can be improved.

Further, after a pair of holding rollers pivotally supported by the movable body are separated at appropriate intervals by a roller separating means provided on the case body, the pair of holding rollers are raised and lowered between the holding rollers from the open surface side of the case body and the movable body. Since it is inserted and set on the cord, there is no need to constantly press the operating part of the roll receiver with one hand unlike the conventional mechanism, so it is possible to concentrate on the work of inserting the elevating cord only, and the assembling work of the elevating cord is easy And it can be done easily.

[0013]

An embodiment of the present invention will be described in detail below with reference to the drawings. The drawing shows the first assembled on a lifting blind
1 shows a lock unit according to an embodiment. In FIG. 1, a blind 1 according to the present invention collectively inserts six lifting cords 4... Into a lock unit 3 fitted and fixed to a right end of a box type rail 2. Then, the six lifting cords 4 hanging down from the lock unit 3 are lowered to adjust the slats 5 of the blind 1 to an arbitrary height position. In addition, the tilt pole 6 connected to the left end of the box type rail 2 is rotated in the opening and closing direction, so that the blind 1
Are variably adjusted to an arbitrary opening / closing angle.

In the above-mentioned blind 1, six lifting cords 4 are suspended at predetermined regular intervals in the longitudinal direction on the lower surface side of the box type rail 2, and the lower ends of the respective lifting cords 4 are blinded. 1 are respectively fixed to support rails 7 provided at the lowermost portion of the box-shaped rail 1, and the upper ends of the respective lifting / lowering cords 4 are respectively stretched over six guide rollers 8 which are pivotally supported inside the box-shaped rail 2. The other end of each lifting / lowering cord 4 is inserted into the lock unit 3 fitted and fixed to the right end of the box-shaped rail 2 at a time, and one of the six lifting / lowering cords 4 hanging down from the lower part of the lock unit 3 is one. And fixed to the right end of the support rail 7.

Six ladder cords 9 are suspended at predetermined regular intervals in the longitudinal direction on the lower surface side of the box type rail 2, and a large number of slats 5 are interposed between the ladder cords 9 ... Are erected at equal intervals in the vertical direction, and the lower ends of the ladder cords 9 are fixed to support rails 7 laid at the lowermost part of the blind 1, respectively.

The above-mentioned lock unit 3 is shown in FIGS.
As shown in FIGS. 4 and 5, a case body 1 formed in a size and shape to be fitted and fixed inside the box-shaped rail 2.
0, a case cover 1 formed in a size and shape to be fitted and fixed to the left open surface of the case main body 10 on the left open surface of the case body 10.
1 are rotatably connected. The case body 1 is provided on the inner wall surface of the center of the case body 10 having the left side open.
0 U-shaped movable body 12 of which is formed by opening the side corresponding to the open face of the movably accommodated held before and after the mesh fixed position and disengaged position, and axially supported at the site of the upper and lower the movable member 12 Arrangement
Six well as collectively inserting each lift cord 4 ... of between and below each roller mechanism 13, 14 and location of the case body 10
It is disposed alternate mechanism 15 between the facing surfaces of the lower surface side of the lower inner wall surface and the movable member 12.

The above-described case body 10 is the same as the case body 1.
And a pinching roller 13 of a movable body 12, which will be described later,
Roller engaging portion 16 at a height position where
And a stepped roller locking portion 17 is formed in parallel on the lower inner wall surface of the case body 10 at a height position where a holding roller 14 of a movable body 12 described later is meshed and fixed. The plurality of triangular locking teeth 16a formed on the inclined surface of the roller locking portion 16 and the triangular locking teeth 17a formed on the flat surface of the roller locking portion 17 have the same pitch. The interval is set.

Each of the guide rollers 18 and 19 is rotatably supported on the right inner wall surface of the case body 10 at an interval allowing the movable body 12 to be moved back and forth, as will be described later. A metal fitting insertion portion 20 having an open lower surface is formed on the lower surface side of the case body 10, and a rail receiving plate 21 is formed at a lower portion on the front side of the case body 10 so as to face the lower surface side of the metal fitting insertion portion 20. That is, the case body 10 and the case cover 11 are integrally assembled and fitted into the right end portion of the box type rail 2, and each of the box type rails 2 is provided between the opposing surfaces of the case body 10 and the rail receiving plate 21. After inserting the rails 2a, 2a, a fastening screw 23 is screwed from below into a fixing fitting 22 inserted into a fitting inserting portion 20 of the case main body 10 via a rail receiving plate 21 to be fastened and fixed.

The above-mentioned case cover 11 has a shaft portion 24 protruding from an upper end portion on the rear side of the case cover 11 in a direction facing the case body 10, and a support pin 26 is formed in an insertion hole 25 formed in the center of the coaxial portion 24. And can be freely inserted and removed,
The front end of the support pin 26 is press-fitted into the upper end on the rear side of the case main body 10 and is fixed so as to prevent it from falling off.
And the case body 10 are rotatably connected. and,
A coil spring 28 is compression-loaded on the shaft peripheral surface of the support pin 26 to urge the case cover 11 and the case main body 10 in a direction in which the case cover 11 and the case main body 10 are always opened. Case cover 1 facing the end
The cam portion 30 is formed so as to protrude radially with respect to the peripheral surface of one shaft portion 24.

The movable body 12 has an upper clamping roller 13 and a shaft (described later) between a support piece 12a formed at the lower left portion of the movable body 12 and a support piece 12b formed at the lower right portion of the movable body 12. The holding rollers 14 are pivotally supported in opposite directions. A support piece 12c formed on the upper left portion of the movable body 12 and a support wall 1 formed on the upper right portion of the movable body 12
Journalled together for supporting the movable member 29 to freely swing vertically, the roller mechanism 13 and roller mechanism 14 and the axial direction of the lower part are opposed to be described later to the swing end portion of the movable element 29 between the 2d doing.

A plurality of triangular biting teeth 13a formed on the outer peripheral surface of the above-described holding roller 13 and a plurality of triangular biting teeth 14 formed on the outer peripheral surface of the holding roller 14 are formed.
are set at the same pitch interval, and a V-shaped leaf spring 31 is compression-loaded between the upper inner wall surface of the movable body 12 and the upper outer wall surface of the movable element 29 to have the same outer diameter. The movable element 29 is urged to rotate in a direction in which the formed upper and lower holding rollers 13 and 14 mesh with each other. As another means for urging the mover 29 described above, for example, the mover 29 is rotationally urged by a plate spring (not shown) integrally formed or assembled, or a coil spring or the like is used. The movable element 29 may be rotationally biased by an elastic body (not shown) such as a spiral spring or synthetic rubber.

As shown in FIG. 6, the alternate mechanism 15 has a ball receiving groove 32 formed in a width direction on a lower inner wall surface of the case body 10 and a lower surface of the movable body 12 opposed to the ball receiving groove 32. A heart-shaped alternate groove 33 is formed in the center of the side, and a ball receiving groove 32 formed in the case body 10 and an alternate groove 33 formed in the movable body 12 are formed.
Between them, the lock ball 34 is held rotatably.

The above-mentioned alternate groove 33 has a heart-shaped alternate groove 33 formed with a hook-shaped locking projection 35 at the center thereof, and a lock ball 34 around the locking projection.
The guide wall 36 is formed at a groove width allowing the rolling of the guide wall 36. That is, each of the six lifting / lowering cords 4.
The movable body 12 is moved back and forth between a mesh fixing position and a mesh releasing position in response to the lowering operation of the lifting cords 4. The lock ball 34 rolls from the ball retreat groove 37 formed at the rear end portion on the lower surface side of the movable body 12 to the alternate groove 33, and the lock ball 34 is displaced in the width direction along the ball receiving groove 32 of the case body 10. At the same time, the lock ball 34 rolls in only one direction of the a position, the b position, the c position, the d position, the e position, the f position, and the g position set in the alternate groove 33, and the ball retreat groove from the alternate groove 33. The rock ball 34 returns to 37.

By the first lowering operation, the lock ball 34 rolls from the ball retreat groove 37 to the alternate groove 33, and the positions a, b, c, d, and e set in the alternate groove 33 are set. The lock ball 34 sequentially rolls while being displaced in the width direction and engages with the position e . In addition, the lock ball 34 rolls while being displaced in the width direction in the order of the e position, the f position, the g position, and the a position set in the alternate groove 33 by the second lowering operation, and retreats from the alternate groove 33. Lock ball 34 in groove 37
Returns.

The illustrated embodiment is configured as described above , and a method of operating the lock unit 3 attached to the vertically movable blind 1 will be described below. First, blind 1
When the height is adjusted to an arbitrary height, the six lifting / lowering cords 4 hanging down from the right end of the box-shaped rail 2 are lowered to move the movable body 12 inside the lock unit 3 to the disengagement position. . That is, six lifting codes 4 ...
Are held by the holding rollers 13 and 14 which are pivotally supported by the movable body 12, the movable body 12 is integrally moved backward by the lowering operation of the lifting / lowering cords 4, and as shown in FIG. Each roller locking portion 1 formed inside the lock unit 3
The holding rollers 13 and 14 of the movable body 12 are forcibly pulled out from between the gaps 6 and 17, so that the engagement between the roller locking portions 16 and 17 and the holding rollers 13 and 14 can be released.

At the same time, the lock ball 34 is rolled from the ball retreat groove 37 to the alternate groove 33, and the lock ball 34 is sequentially rolled to the a, b, c, d, and e positions in the alternate groove 33. Let the alternate groove 3
The lock ball 34 is engaged with the position e of FIG.
Is fixed to the disengagement position, so that when the weight of the blind 1 is added to each of the lifting cords 4.
Of the blind 1
Can be reduced to any height.

The d position and f of the alternate groove 33
When the lock ball 34 is engaged in the position, the blind 1
When each of the lifting cords 4 ... is lowered against the own weight of
Each of the holding rollers 13 and 14 of the movable body 12 can freely rotate to pull up the blind 1 to an arbitrary height.

When the blind 1 is lifted and stopped at an arbitrary height, the six lifting cords 4 are lowered and the lock ball 34 is moved to the positions e, f, g and a in the alternate groove 33. When the lock balls 34 are sequentially rolled and returned from the alternate grooves 33 to the ball retreating grooves 37, the movable body 12 moves forward to the meshing fixed position via the lifting cords 4. at the same time,
As shown in FIG. 2, the respective roller locking portions 16 and 17 formed inside the lock unit 3 and the respective holding rollers 13 and 14 pivotally supported by the movable body 12 mesh with each other, and the weight of the blind 1 is added. , The bite of each of the holding rollers 13 and 14 into each of the lifting cords 4.
Can be raised and lowered to an arbitrary height.

Next, the lock unit 3 and each elevating cord 4
Will be described below.

As shown in FIG. 4 and FIG.
0, the case cover 11 fitted to the left open surface is once opened, and the movable body 12 housed in the case body 10 is moved backward to the disengagement position. 11 is rotated to an appropriate angle (for example, 90 degrees or 270 degrees), the cam portion 30 formed on the shaft portion 24 of the case cover 11, and the base end of the movable element 29 supported by the movable body 12. To push down the base end of the mover 29 against the elastic force of the leaf spring 31 so that the holding rollers 13 and 14 of the movable body 12 are set at appropriate intervals where insertion of the lifting cord 4 is allowed. Separate.

Thereafter, the respective lifting cords 4 are inserted in parallel into the case body 10 from the left open surface, and the respective lifting cords 4 are sandwiched between the holding rollers 13 and 14 of the movable body 12 having the same side opened. Insert and set. After the cord is inserted, the case cover 11 is rotated to the initial position to release the engagement between the movable member 29 and the cam portion 30, and the movable member 29 pivotally supported by the movable body 12 is subjected to the elastic force of the leaf spring 31. To return to rotation,
After the lifting cords 4 are collectively clamped by the upper and lower clamping rollers 13, 14, the case body 10 and the case cover 11 are fitted and fixed to the right end of the box-type rail 2 and fixed. 3 and the ascending / descending cords 4... Can be easily assembled.

In order to replace the pre-assembled elevating cord 4, the lock unit 3 is pulled out from the right end of the box-shaped rail 2, and the case cover 11 is rotated in the same manner as described above. 1 or 6 lifting codes 4 ...
To replace.

As described above, the case cover 11 constituting the lock unit 3 is rotated to operate the case cover 1.
The movable member 29 of the movable body 12 housed in the case body 10 is pressed down by the cam portion 30 formed on the one shaft portion 24, and the pair of holding rollers 13, 14 supported by the movable body 12 are appropriately spaced. After being separated from each other, the six lifting cords 4 are inserted and set between the holding rollers 13 and 14 from the open surfaces of the case body 10 and the movable body 12. There is no need to constantly press with one hand, and it is possible to concentrate only on the work of inserting the lifting cord 4, and the assembly work of the lifting cord 4 can be performed easily and easily.

Moreover, the case body 10 and the movable body 12
Since the same side portion corresponding to the position between the holding rollers 13 and 14 is open, the inserted state of the lifting cord 4 can be visually recognized from the side, and the inserted state of the lifting cord 4 can be easily corrected. 6 can be reliably inserted and set between 13 and 14, and workability in assembling the cords can be improved.

Further, since the six lifting and lowering cords 4 are held by the holding rollers 13 and 14 pivotally supported by the movable body 12, the movable body is lowered by operating the lifting and lowering cords 4 at once. 12 move forward and backward integrally, and the alternate mechanism 15 restricts the movement of the movable body 12 to a position where the lifting cords 4 are locked and unlocked.
Each lifting cord 4 of the book can be fixed at an arbitrary lowered position.

FIG. 7 shows a lock unit 3 according to a second embodiment in which each of the holding rollers 13, 14 pivotally supported by the movable body 12 is separated at appropriate intervals by rotating or sliding the operation lever 38.
That is, the movable body 1 housed in the case body 10
2 is moved backward to the disengagement position, and the operation lever 38 pivotally supported on the rear upper end of the case main body 10 is rotated to operate the cam portion 40 formed on the shaft portion 39 of the operation lever 38.
And the base end of a mover 29 pivotally supported by the movable body 12, and opposes the leaf spring 31 to separate the holding rollers 13, 14 at appropriate intervals allowing insertion of the lifting cord 4. Therefore, as in the above-described embodiment, the assembling work of the lifting cords 4 can be easily performed, and the case body 10 is fitted and fixed to the right end of the box-shaped rail 2 with the case body 10 opened. The labor for opening and fitting the case cover 11 can be omitted, and the workability can be improved. The operation lever 38 may be slid in the front-rear direction to separate the holding rollers 13 and 14 pivotally supported by the movable body 12 at appropriate intervals.

FIG. 8 shows that the movable body 12 accommodated in the case body 10 is moved backward to the disengagement position, and the holding rollers 13 and 14 supported by the movable body 12 are separated by the cam portion 41 at appropriate intervals. 9 shows a lock unit 3 of a third embodiment,
That is, after the holding rollers 13 and 14 of the movable body 12 are pushed and spread at an appropriate interval where the insertion of the elevating cord 4 is allowed, the movable body 12 is moved backward to the disengagement position, and the upper rear end of the case body 10 is moved upward. The cam portion 41 formed in the portion is engaged with the base end of the mover 29 pivotally supported by the movable body 12, and each of the holding rollers 13, 14 is slightly narrower than the outer diameter of the elevating cord 4. Since the lifting cords 4 are held at appropriate intervals to allow insertion, the assembling work of the lifting cords 4... Can be easily performed and each holding cord is held in the same manner as in the first and second embodiments. When the six lifting / lowering cords 4 are inserted between the rollers 13 and 14, the holding rollers 13 and 14 are pushed apart at intervals corresponding to the outer diameter of each of the lifting / lowering cords 4. In order to release the engagement with the cam portion 41, each of the lifting cords 4 ... It can be moved back and forth movable body 12 to the meshing fixed position and disengagement position by the pull-down operation.

A cam groove (not shown) formed on the inner wall surface on the rear side of the case main body 10 is engaged with one side of the movable element 29 supported by the movable body 12 or the shaft end of the holding roller 13. Then, the holding rollers 13 and 14 may be separated from each other at appropriate intervals where insertion of the lifting cord 4 is allowed.

In correspondence between the structure of the present invention and the above-described embodiment, the roller separating means of the present invention includes the case cover 11 and the cam portion 30 of the first embodiment, the operation lever 38 and the cam of the second embodiment. Part 40 and the cam part 41 of the third embodiment
However, the present invention is not limited to only the configuration of the above-described embodiment.

In the above-described first, second and third embodiments, the movable body 12 is brought into the meshing fixed position and the meshing releasing position by the alternate mechanism 15 in which the heart-shaped alternate groove 33 and the lock ball 34 are engaged. For example, the movable body 12 may be regulated to the meshing fixed position and the meshing releasing position by another alternate mechanism (not shown) formed by engaging an alternate groove and a lock pin. It is not limited.

[Brief description of the drawings]

FIG. 1 is a perspective view of a blind to which a lock unit according to a first embodiment is assembled.

FIG. 2 is a side view of the lock unit showing a locked state of the lifting cord.

FIG. 3 is a side view of the lock unit showing an unlocked state of the lifting cord.

FIG. 4 is a side view of the lock unit, showing a method of assembling the lifting cord.

FIG. 5 is a vertical sectional view of a central portion of the lock unit, showing a method of assembling the lifting cord.

FIG. 6 is an operation explanatory view of an alternate mechanism.

FIG. 7 is a rear side view showing the lock unit of the second embodiment.

FIG. 8 is a rear side view showing the lock unit of the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Blind 2 ... Box type rail 3 ... Lock unit 4 ... Lifting code 10 ... Case main body 11 ... Case cover 12 ... Movable body 13, 14 ... Nipping roller 15 ... Alternate mechanism 29 ... Movable element 30 ... Cam part 31 ... Leaf spring 38 ... operation lever 40, 41 ... cam part

Claims (2)

(57) [Scope of request for utility model registration] A movable body is slidably held with respect to a case body, and a pair of holding rollers pivotally supported by the movable body are pressed against each other to clamp a lifting cord and to lower the lifting cord. The movable body is slid integrally, and each of the holding rollers pivotally supported by the movable body and each of the roller locking portions formed on the case main body are regulated by the alternate mechanism at a position where they can be fixed and released from each other. A lifting cord lock mechanism for fixing the lifting cord held by each of the holding rollers at an arbitrary lowered position, wherein a side surface of a movable body corresponding to a side face between the pair of holding rollers;
And a side surface of the case body corresponding to a side surface of the movable body.
The lifting cord is inserted into the movable body from the side
An elevating cord lock mechanism that is opened parallel to the stretching direction of the elevating cord so that it can be mounted. 2. A roller separating means which separates each of the holding rollers pivotally supported by the movable body at appropriate intervals into which a lifting coat can be inserted into a wall portion of the case body facing the movable body moved to the mesh release position. The lifting cord lock mechanism according to claim 1, further comprising: