JPH0730868U - Lifting code lock mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lifting cord locking mechanism that facilitates insertion and removal of lifting cords and improves workability. [Structure] A free end side of a movable member is vertically swung by pulling down each elevating cord that hangs below the lock unit, the vertical swing of the movable member is restricted by an alternation mechanism, and a roller formed inside the lock unit. Locking part,
A holding roller pivotally supported on the movable member is meshed and fixed, and the pulling position of each lifting cord is held and fixed by a pair of holding rollers. Further, the outer frame member constituting the movable member is slid forward against the coil spring, and the holding roller pivotally supported by the outer frame member and the holding roller pivotally supported by the inner frame member are separated from each other at an appropriate interval. Therefore, the work of inserting and pulling out the lifting cords between the holding rollers can be easily performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lifting cord lock mechanism used when opening and closing curtains such as curtains, blinds and screens.

[0002]

[Prior art]

 Conventionally, as a lock mechanism for opening and closing the curtain as in the above example, for example, a movable bracket is pivotally supported in the lock unit so that it can be vertically swung, and a vertical mechanism that is pivotally supported on the free end side of the movable bracket is used. Inserting an appropriate number of each lifting cord between each holding roller, and vertically swinging the free end side of the movable fitting by pulling down the lifting cords, the roller locking part formed inside the lock unit There is a mechanism (Japanese Utility Model Publication No. 3-1997) in which a holding roller pivotally supported on a movable fitting is meshed and fixed, and a pulling position of each lifting cord is held and fixed by a pair of holding rollers.

[0003]

[Problems to be solved by the device]

 However, since the above-mentioned lock mechanism eccentrically and axially supports the upper and lower holding rollers in the pulling direction of the respective lifting cords, the S-shaped lifting code is provided between the upper and lower holding rollers. It must be meandered and inserted, and the insertion side end of each lifting cord may be bent or caught in the middle. and. The insertion gap between the holding rollers cannot be visually recognized from above or below, and the insertion gap between the holding rollers becomes narrower as the number of inserting and lowering cords increases, so that the insertion gap between the upper and lower holding rollers becomes smaller. On the other hand, it is difficult to insert the elevating cords straightly, and there is a problem that it takes time and effort to assemble the elevating cords.

In view of the above problems, the present invention makes it possible to easily perform a lifting cord inserting operation by separating a pair of holding rollers pivotally supported on a movable body at appropriate intervals allowing insertion of a lifting cord. At the same time, the purpose is to provide a lifting cord lock mechanism that can improve workability.

[0005]

[Means for Solving the Problems]

 According to the present invention, a pair of gripping rollers are axially supported on the free end side of the movable body at right angles to the pulling down direction of the lifting code, and the gripping rollers are separated from each other by an interval allowing insertion of the lifting code. An elevating cord lock mechanism that is provided so as to be able to come into contact with and separate from an interval at which the cord is clamped and fixed, and that has roller urging means that urges one or both of the clamping rollers in the direction in which the elevating cord is clamped and fixed. Is characterized in that.

[0006]

[Action]

 According to this invention, a pair of gripping rollers pivotally supported on a movable body are separated from each other by an appropriate interval that allows insertion of a lifting cord against the roller urging means. It is possible to reliably insert the number of each lifting cord. Moreover, since the appropriate number of lifting cords are held by the holding rollers pivotally supported on the movable body, the free end side of the movable body swings up and down by pulling operation of the lifting cords, and the rollers formed inside the unit. When the locking portion and the holding roller pivotally supported by the movable body are meshed and fixed, the pulling-down position of each lifting cord is held and fixed by the pair of holding rollers.

[0007]

[Effect of device]

 According to this invention, the pair of gripping rollers pivotally supported on the movable body are relatively contacted and separated from each other, and the gripping rollers are separated from each other at an appropriate interval allowing insertion of the elevating cord. Like the above, the lifting cord does not bend or get caught in the middle, and each lifting cord can be inserted straight between the pair of holding rollers. Moreover, since the insertion gap between the holding rollers can be visually recognized from the insertion direction, the work of inserting the lifting cord between the holding rollers can be easily performed, and the workability can be improved.

[0008] Moreover, since a suitable number of lifting cords are held by the pair of holding rollers and the free end side of the movable body is vertically swung in response to the pulling operation of the lifting cords, the lifting cords are lowered. The operation for holding and releasing the position can be surely performed.

[0009]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. The drawing shows, as an example of a curtain, a lock unit used for opening and closing a pull-up curtain, and in FIG. 1, for example, the upper end of the curtain 3 is provided on the longitudinal front surface of the curtain rail 2 installed above the window frame 1. The side edges are fixed, and one end side of each lifting cord 4 hung on the lower surface of the longitudinal side of the curtain rail 2 is fixed to the lower end edge of the curtain 3, and the other end of each lifting cord 4 is fixed. The curtain 3 is inserted all at once into the lock unit 5 fixed to the side of the window frame 1, and the curtains 3 are pulled up and opened by pulling down the lifting cords 4 ... Hanging down from the center of the lower surface of the lock unit 5.

As shown in FIGS. 2 and 3, the lock unit 5 described above has a main body 6 formed of a synthetic resin material, a metal material or the like in an open side surface, and a size matching the open side surface of the main body 6. A lid 7 made of a synthetic resin material or a metal material is integrally fitted and fixed to the upper and lower sides of the main body 6 and the lid 7, and the lowering cords 4 ... A guide roller 8 that has been knurled orthogonally is pivotally supported, and a step-like roller locking portion 9 is formed at the front upper end of the main body 6 and the lid 7 so as to face the outer peripheral surface of the guide roller 8. A large number of triangular locking teeth 9a ... Are engraved on the lower slope of the roller locking portion 9.

In addition, the movable member 10 is pivotally supported in the direction of pulling down the lifting cords 4 on the central portion facing surfaces of the main body 6 and the lid body 7, so that the movable member 10 swings. The elevating cords 4 are inserted in parallel between the pair of holding rollers 11 and 12 pivotally supported on the moving side end, and an alternation mechanism 13 is engraved on the one side facing surface of the main body 6 and the movable member 10. Rocking is regulated.

Further, cord insertion holes 5a and 5b are formed in the central portion of the upper surface side and the central portion of the lower surface side of the main body 6 and the lid body 7 in the direction of pulling down the respective lifting cords 4 ... An operation hole 5c having a size and shape that allows vertical swinging and retracting operation of an outer frame member 14 to be described later is formed at the lower rear end of the lid 7.

The movable member 10 described above is slightly narrower between the support pieces 14a, 14a of the outer frame member 14 formed of a synthetic resin material or a metal material in a U-shape, than between the support pieces 14a, 14a. Further, an H-shaped inner frame member 15 formed of a synthetic resin material or a metal material is slidably held in the front-rear direction, and each guide piece is formed on the opposing surface of the support pieces 14a, 14a constituting the outer frame member 14 on the base end side. The holes 14b, 14b are formed, and the shaft holes 15b 1, 15b are formed in the facing surfaces of the support pieces 15a, 15a constituting the inner frame member 15 so as to communicate with the guide holes 14b, 14b described above. , The support pin 16 is inserted through the guide holes 14b, 14b of the outer frame member 14 and the shaft holes 15b, 15b of the inner frame member 15, and the left and right ends of the support pin 16 are located at the center of the main body 6 and the lid 7. Part of the outer frame member 14 while being press-fitted and fixed to the wall surface facing the parts. A part of the movable member 10 is raised and lowered with the support pin 16 as a center of rotation by slightly supporting the main body 6 and the lid 7 so as to project slightly outward from an operation hole 5c formed in the rear lower end of the main body 6 and the lid 7. It is swingably supported.

In addition, a support shaft 17 is mounted on the opposing surfaces of the support pieces 14a, 14a constituting the outer frame member 14 on the free end side, and the knurled gripping roller 11 is supported on the support shaft 17. ing. A support shaft 18 is mounted on the opposing surfaces of the support pieces 15a, 15a constituting the inner frame member 15 on the free end side, and a knurled gripping roller 12 is supported on the support shaft 18. The coil spring 19 is compressed and loaded between the support pin 16 and the connecting piece 14c formed between the support pieces 14a of the outer frame member 14, and the elastic force of the coil spring 19 causes the outer frame member 14 to move. The holding roller 11 which is rotatably supported and the holding roller 12 which is rotatably supported by the inner frame member 15 are always urged in a direction of meshing with each other.

As shown in FIGS. 3 and 7, the above-mentioned alternation mechanism 13 has a ball receiving groove 20 formed on the outer surface portion of the support piece 14a constituting the outer frame member 14 on the free end side. An alternate groove 21 is formed on the central wall surface of the main body 6 facing the roller 20, and the lock ball 22 is rolled between the ball receiving groove 20 formed on the outer frame member 14 and the alternate groove 21 formed on the main body 6. Holds freely.

The alternate groove 21 described above has a V-shaped guide protrusion 23 formed at the center of the alternate groove 21 formed in an inverted heart shape, and the rock ball 22 is allowed to roll on the outer peripheral portion of the guide protrusion 23. The guide wall portion 24 is formed so as to be separated by the groove width. That is, the elastic force of the coil spring 19 holds the lifting cords 4 by the holding roller 11 pivotally supported by the outer frame member 14 and the holding roller 12 pivotally supported by the inner frame member 15. The entire movable member 10 swings up and down in response to the pulling operation of each lifting cord 4. At the same time, along with the alternate groove 21 of the main body 6 constituting the alternate mechanism 13, the lock ball 22 engaged with the ball receiving groove 20 of the outer frame member 14 rolls while displacing in the front-back direction, and at the same time, the alternate groove 21. The lock ball 22 rolls only in one direction of the a position, b position, c position, d position, e position, f position, and g position set on the loop path.

By the first pulling down operation, the lock ball 22 rolls while displacing in the front-rear direction in the order of a position, b position, c position, d position, and e position set on the circulating path of the alternate groove 21. . Further, by the second pulling operation, the lock ball 22 rolls while being displaced in the front-rear direction in the order of the e position, the f position, the g position, and the a position set on the circulating path of the alternate groove 21.

With the illustrated embodiment configured as described above, the opening / closing operation of the curtain 3 by the lock unit 5 will be described below. First, when pulling up the curtain 3 to an arbitrary height, as shown in FIGS. 1 and 2, by pulling down the two lifting cords 4 ... Against the own weight of the entire carten 3, the same operation is performed. The entire movable member 10 swings up and down in response to the pulling operation of each of the lifting cords 4, and the roller locking portion 9 formed inside the lock unit 5 and the holding roller 11 pivotally supported by the movable member 10 mesh with each other. Is released. At the same time, the lock ball 22 sequentially rolls at the positions a, b, c, d, and e set on the circulating path of the alternate groove 21, and the lock ball 22 engages with the position e of the alternate groove 21. Since the movable member 10 is regulated to rotate in the disengagement posture, when the weight of the curtain 3 as a whole is added to the elevating cords 4, ..., the holding rollers 11 and 12 pivotally supported by the movable member 10 are free. The curtain 3 can be rotated and pulled down to an arbitrary height.

Further, when the lock ball 22 is engaged at the d position and the f position set on the circulating path of the alternate groove 21, the lifting cords 4 are pulled down against the dead weight of the entire curtain 3. The holding rollers 11 and 12 pivotally supported on the movable member 10 can freely rotate to raise the curtain 3 to an arbitrary height.

Next, when the curtain 3 is stopped to be pulled up to an arbitrary height, the two lifting cords 4 are pulled down against the weight of the curtain 3 as a whole, so that the curtain 3 is moved along the circulation path of the alternate groove 21. The lock ball 22 is sequentially rolled to the set e position, f position, g position, and a position, and the lock ball 22 is engaged with the a position of the alternate groove 21 to bring the movable member 10 into the fixed engagement position. By restricting the rotation, the roller locking portion 9 formed inside the lock unit 5 and the holding roller 11 pivotally supported by the movable member 10 are meshed and fixed, and the weight of the curtain 3 as a whole is lifted by each lifting cord 4. .., the biting amount of each of the holding rollers 11, 12 with respect to each of the lifting cords 4 becomes deeper, and the curtain 3 can be fixedly positioned at an arbitrary height.

Next, when assembling the elevating cords 4, ..., As shown in FIGS. 4, 5 and 6, the two elevating cords 4 are pulled down against the weight of the entire carten 3. Then, the lock ball 22 is engaged with the position e of the alternate groove 21 to regulate the rotation of the movable member 10 to the disengaged posture. Thereafter, the rear end portion of the outer frame member 14 protruding outward from the operation hole 5c of the lock unit 5 is pressed to slide the outer frame member 14 forward against the coil spring 19 and The holding roller 11 pivotally supported by the frame member 14 and the holding roller 12 pivotally supported by the inner frame member 15 are separated from each other at an appropriate interval allowing insertion of the respective lifting cords 4.

After that, the elevating cords 4 ... Are inserted between the holding rollers 11 and 12 through the cord insertion holes 5 a formed on the upper surface side of the lock unit 5, and are formed on the lower surface side of the lock unit 5. After pulling out the lower ends of the respective elevating cords 4 ... From the cord insertion holes 5b, the pressing of the outer frame member 14 is released, and the outer frame member 14 is returned to the rear side by the elastic force of the coil spring 19 to form the outer frame. Each lifting cord 4 is held by a holding roller 11 pivotally supported by the member 14 and a holding roller 12 pivotally supported by the inner frame member 15.

As described above, the outer frame member 14 forming the movable member 10 is slid forward against the coil spring 19 to pivotally support the outer frame member 14, and the holding roller 11 and the inner frame member. Since the holding rollers 12 pivotally supported on 15 are separated from each other at an appropriate interval allowing insertion of the elevating cords 4, ... When the cords are inserted, the elevating cords 4 are bent or caught in the middle as in the conventional example. Without raising or lowering, the elevating cords 4 ... Can be inserted straightly between the pair of holding rollers 11 and 12. Moreover, since the insertion gap between the holding rollers 11 and 12 can be visually recognized from above or below, it is possible to easily insert the lifting cords 4 between the holding rollers 11 and 12 to improve workability. be able to.

Moreover, the pair of holding rollers 11 and 12 holds the two lifting cords 4 ..., and vertically swings the free end side of the movable member 10 in response to the pulling operation of the lifting cords 4. Therefore, it is possible to surely perform the operation for holding and releasing the lowering position of each lifting cord 4 ...

In the correspondence between the configuration of the present invention and the above-described embodiment, the lifting cord lock mechanism of the present invention corresponds to the lock unit 5 of the embodiment, and similarly, the movable body is the movable member 10 and the outside. The roller urging means corresponds to the frame member 14 and the inner frame member 15, and the roller urging means corresponds to the coil spring 19. However, the present invention is not limited to the configurations of the above-described embodiments.

In the above-described embodiment, the outer frame member 14 constituting the movable member 10 is slid forward against the coil spring 19 to hold the pair of holding rollers 11 and 12 in a separated state. For example, the position of the outer frame member 14 constituting the movable member 10 may be regulated by a lock mechanism (not shown) such as a stopper or a cam, and the pair of sandwiching rollers 11 and 12 may be fixed in a separated state.

[Brief description of drawings]

FIG. 1 is a front view showing an opening / closing operation of a pull-up curtain.

FIG. 2 is a vertical sectional side view of a lock unit showing a swinging state of a movable member.

FIG. 3 is a cross-sectional plan view of the lock unit showing a state in which the lifting cord is held.

FIG. 4 is a vertical cross-sectional side view of the lock unit showing a state in which the lifting cord is held.

FIG. 5 is a vertical cross-sectional side view of the lock unit showing a separated state of the holding rollers.

FIG. 6 is a cross-sectional plan view of the lock unit showing a separated state of the holding rollers.

FIG. 7 is an operation explanatory view of the alternate mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Window frame 2 ... Curtain rail 3 ... Curtain 4 ... Elevating code 5 ... Lock unit 6 ... Main body 7 ... Lid body 8 ... Guide roller 9 ... Roller locking part 10 ... Movable member 11, 12 ... Holding roller 13 ... Alternate mechanism 14 ... Outer frame member 15 ... Inner frame member 16 ... Support pin 19 ... Coil spring 20 ... Ball receiving groove 21 ... Alternate groove 22 ... Lock ball

Claims (1)

[Scope of utility model registration request] Claims: 1. A movable body is pivotally supported in the unit so as to be vertically swingable, and an appropriate number of lifting cords are inserted between a pair of holding rollers that are pivotally supported on the free end side of the movable body to raise and lower each unit. When the cord is pulled down, the free end side of the movable body is swung up and down, and the roller locking part formed inside the unit and the holding roller pivotally supported by the movable body are meshed and fixed. Is a lifting cord locking mechanism that holds and fixes the pair of holding rollers by pivoting the pair of holding rollers orthogonal to the pulling direction of the lifting cord on the free end side of the movable body. The lifting cords are provided so as to be able to come into contact with and separate from each other at an interval in which the lifting cords are allowed to be inserted and the spacing at which the lifting cords are clamped and fixed. Roller biasing means It provided the lift cord lock mechanism.