JP3960927B2 - Shutter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter. In particular, the present invention relates to a hinge member that flexibly connects plates constituting a shutter opening / closing plate.
[0002]
[Prior art]
In the shutter as shown in FIG. 1 constituted by a pair of guide rails 4 and a shutter opening / closing plate 10 slidably held by the guide rails 4, the shutter opening / closing plate 10 slides along the guide rail 4. In general, it is composed of a plurality of plate-like plates 1 and a hinge member 2 that flexibly connects the plates so that they can be compactly accommodated by being wound around a drum or the like.
As the hinge member 2, a structure in which an inner cylinder 26 and an outer cylinder 27 having a C-shaped cross section connected to adjacent plates 1 are rotatably fitted to each other as shown in FIG. 7 is used. . The plate 1 is forcibly fitted into a holding portion 24 formed to project from the peripheral walls of the inner cylinder 26 and the outer cylinder 27, and is coupled in a retaining state.
[0003]
Since the inner cylinder 26 and the outer cylinder 27 rotate relative to each other, the adjacent plate 1 can be bent, so that the shutter opening / closing plate 10 as a whole is a curved plate. Can be freely curved.
Therefore, even when the guide rail 4 has the curved portion R as shown in FIG. 1, the shutter opening / closing plate 10 can be smoothly slid while being curved along the curved portion R.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 61-137792
[Patent Document 2]
JP 7-317467 A
[Patent Document 3]
JP 2002-155680 A
[0005]
[Problems to be solved by the invention]
However, in the shutter, since the outer peripheral surface of the inner cylinder 26 and the inner peripheral surface of the outer cylinder 27 constituting the hinge member 2 are in sliding contact so that the plates 1 can be bent smoothly. When the shutter opening / closing plate 10 is curved, friction is generated between the inner cylinder 26 and the outer cylinder 27.
Therefore, in order to slide the shutter opening / closing plate 10 while bending it along the curved portion R, the shutter opening / closing plate 10 resists the frictional force in addition to the force pushing the shutter opening / closing plate 10 in the sliding direction. A force is required to rotate the inner cylinder 26 and the outer cylinder 27 relative to each other.
[0006]
Therefore, when the guide rail 4 has the curved portion R, a large force is required for sliding the shutter opening / closing plate 10, so that the labor required for opening and closing the shutter is larger than that of the linear guide rail 4. There is a problem of being big.
In addition, since the sliding force between the inner cylinder 26 and the outer cylinder 27 is likely to vary for each hinge member 2 and the magnitude of the frictional force generated by each hinge member 2 is different, the degree of progress of the shutter opening / closing plate 10 varies. There is also a problem that the shutter cannot be opened and closed smoothly because the force required for sliding changes.
[0007]
According to the present invention, “a shutter opening / closing plate in which a plurality of band plate-like plates are connected to each other by a hinge member so as to be bent, and a pair of guides in which a guide groove for slidably holding the shutter opening / closing plate is formed. An object of the present invention is to make it possible to smoothly open and close the shutter with a small force even when the guide rail has a curved portion.
[0008]
[Means for Solving the Problems]
* 1
The technical means of the present invention for solving the above-mentioned problem is as follows: “The hinge member is a columnar body having a pair of side grooves that hold the edge of the plate in a rotatable and retaining state,
The side groove is formed so that the groove width on the groove bottom side is larger than the open end side, and an arc projection serving as a rotation fulcrum of the plate is formed on the edge of the open end. ,
The end edge of the plate is formed with an engaging portion that can freely engage with the arcuate protrusion of the side groove ”.
According to this, the plate is rotatably engaged with the arc projection formed at the open end of the hinge member in a retaining state, and the edge of the side groove of the side groove swings in the groove width direction. Since the groove width on the groove bottom side is set large so as to be movable, the plate can freely rotate with the arc projection as a fulcrum. Therefore, compared with the hinge member in which the inner cylinder and the outer cylinder of the conventional example are rotatably fitted, the sliding contact area is small and the friction generated between the plate and the hinge member is also small.
Here, the arc protrusion may be formed only on one edge of the open end, or may be formed on both edges.
[0009]
* Section 2
In item 1, “the arc protrusion is formed at one end edge of the open end, and a rotation blocking portion that restricts the rotation of the plate held in the side groove is formed at the other end edge”. In this case, since the other end edge of the open end prevents excessive rotation of the plate in one direction, the shutter opening / closing plate is excessively curved and caught on the guide rail. This can be prevented. Therefore, the shutter can be opened and closed smoothly.
Here, in the case where the rotation blocking portions of the pair of side grooves are formed so as to support adjacent plates in a substantially straight line via the hinge member, the shutter opening / closing plate is moved from the straight state to the guide rail. Therefore, it can be opened and closed more smoothly than the shutter.
[0010]
* Section 3
In the item 1 or 2, the pair of groove side walls of the side groove are formed so as to limit the rotation angle of the plate held in the side groove within a predetermined range. Since the pair of groove side walls prevent the plate from excessively turning in both directions, the shutter opening / closing plate can be prevented from being excessively curved. Therefore, the shutter can be opened and closed smoothly.
In addition, since the load applied to the rotation preventing portion is dispersed by the pair of groove side walls, the plate and the hinge member are not easily damaged, and the shutter opening / closing plate has high durability.
[0011]
* Item 4
4. In any one of items 1 to 3, wherein “the engaging portion is a concave groove formed on one surface of the plate”, the arc projection of the side groove and the concave portion of the plate Since the groove engages with the concave-convex fitting state, the engagement between the plate and the hinge member is difficult to be released. Therefore, the shutter opening / closing plate has high strength against the force acting in the connecting direction of the plates.
Further, since the concave and convex fitting restricts the swinging of the side groove of the plate in the groove depth direction and the force acting in the groove depth direction of the plate is received by the arc protrusion, the plate The shutter opening and closing plate is highly durable. Further, since the plate is prevented from swinging, collision or contact between the plate and the side groove is prevented, so that no harsh collision noise or contact noise is generated when the shutter opening / closing plate slides. A feeling of use is good.
[0012]
Furthermore, since the concave groove can be easily formed on the edge of a flat plate plate by cutting or the like, the manufacturing cost is lower than the case where a synthetic resin plate having an engaging portion is separately manufactured by a method such as extrusion molding. Low.
Here, the concave groove is not only an arc-shaped one that is closely slidably contacted with the arc-shaped projection, but also a peripheral wall of the arc-shaped projection as long as it is rotatably engaged with the arc-shaped projection. Alternatively, it may be U-shaped, triangular, or other shape that rotates while being pointed at several points.
[0013]
* Section 5
Item 4 is characterized in that “the groove width of the concave groove is formed so as to be larger than the diameter of the circular arc protrusion”. The contact area between the concave groove and the circular arc protrusion is Therefore, the frictional force generated between the plate and the hinge member is also reduced. Therefore, the resistance is smaller than that in which the arcuate protrusion and the concave groove are closely fitted to be uneven, and the shutter can be opened and closed smoothly with a smaller force.
Here, it is suitable that the groove width of the concave groove is set larger than the diameter of the circular arc protrusion and smaller than twice the diameter, and in particular, 1.2 times to 1. It is most suitable to set within the range of 5 times.
[0014]
* Section 6
In any one of the items 1 to 3, "the engaging portion is a protruding portion that is formed to protrude from one surface of the plate and accommodated in the side groove", Since the protruding portion engages with the arc-shaped protruding portion so as to be rotatable and withdrawn, the plate and the hinge member are unlikely to be disengaged similarly to the above-described item 4, and the connecting direction of the plate The shutter opening / closing plate has a high strength against the acting force. Further, since the engaging portion is formed like the concave groove of the above-mentioned item 4, a part of the plate does not become a thin portion having a low strength, so that the plate is not easily damaged and the shutter opening / closing plate is higher. It has durability.
Further, the protruding portion is accommodated in the side groove and has a smaller sliding contact area than the concave groove of the above-mentioned item 4, and a frictional force generated during rotation is small. Therefore, the shutter can be opened and closed smoothly with a smaller force.
[0015]
* Section 7
7. In any one of items 1 to 6, “the hinge member is a columnar body having a long cross-sectional shape in the groove width direction of the guide groove of the guide rail that holds the shutter opening / closing plate”. The hinge member is less likely to bend in the groove width direction and is more effective in the plate thickness direction of the plate held by the hinge member than in the conventional structure in which the inner cylinder and the outer cylinder are fitted to each other. The load to do is also small. Therefore, the shutter opening / closing plate has high strength against the force acting in the plate thickness direction of the plate. Further, since the shutter opening / closing plate is prevented from warping during sliding, the shutter can be opened and closed more smoothly.
Further, since the width in the connecting direction of the hinge member is small, the ratio of the hinge member to the surface of the shutter opening / closing plate is small, so the appearance of the shutter is excellent.
[0016]
* Section 8
In any one of the items 1 to 7, "the side groove is formed so as to be biased to one side in the groove width direction", when the shutter opening and closing plate is slid, Since the plate slides at an offset position of the guide groove, the plate is not easily caught by the guide rail when the shutter opening / closing plate is curved. Therefore, the opening and closing of the shutter is smooth, and the plate surface is not easily damaged by contact with the guide groove.
In addition, since a plate having a large plate width can be used by increasing the interval between adjacent hinge members, the number of the hinge members is used when a transparent plate is used to see through the opposite side of the shutter opening / closing plate. And the transparency of the shutter opening / closing plate is improved. Therefore, the opposite side of the shutter opening / closing plate can be seen more clearly.
Furthermore, by forming the side groove so as to be biased to one side, the height difference between the end surface of the hinge member and the plate surface is small, and the shutter opening / closing plate has a flat plate shape with less unevenness, so that the appearance of the shutter is excellent. ing.
[0017]
* Section 9
In any one of items 1 to 8, “the pair of groove side walls of the side groove is formed such that one groove side wall is high and the other groove side wall is low”. When a liquid such as water is radiated to the surface of the shutter opening / closing plate where the other lower groove side wall is located with the shutter opening / closing plate held by the guide rail standing upright, the other groove side wall and the plate Since the liquid that has entered the side groove through the gap cannot flow over one of the high groove side walls and overflows from the other groove side wall on the intruding side, the liquid enters the side surface on the opposite side of the shutter opening / closing plate. The outflow of liquid can be prevented.
[0018]
* Section 10
In any one of items 1 to 9, “the engaging portion is adjusted according to the groove width of the side groove before engaging with the hinge member” is actually engaged. By re-adjusting the plate thickness and shape of the engaging portion of the plate according to the side groove to be corrected, the groove width of the side groove and the error of the engaging portion that occur during molding or the like are corrected, and the plate is moved to the side groove. Can be reliably and smoothly rotated. As a result, the resistance acting when the shutter opening / closing plate slides can be further reduced, so that the shutter can be opened and closed more smoothly.
[0019]
【The invention's effect】
Since the present invention has the above configuration, the present invention has the following specific effects.
The shutter opening / closing plate according to the present invention is configured such that the adjacent plates are rotatably held by the small arc projections formed at the open ends of the side grooves of the hinge member, and the plates are rotated. In this case, since the friction generated between the plate and the hinge member is small, the resistance force when sliding the shutter opening / closing plate while curving is small. Therefore, even when the guide rail has a curved portion, the shutter can be opened and closed smoothly with a small force.
[0020]
Further, according to the second aspect, in the case where the rotation preventing portion is formed at the edge of the open end of the side groove, excessive rotation in one direction of the plate is prevented, and the shutter opening / closing plate becomes the guide rail. Therefore, the shutter can be opened and closed smoothly.
[0021]
Further, according to the third aspect, in the case where the side wall of the side groove is formed so as to limit the rotation of the plate within a predetermined range, excessive rotation of the plate in both directions is prevented. The shutter can be opened and closed smoothly. Further, the shutter and the opening and closing plate for the shutter are highly durable because the plate and the hinge member are not easily damaged.
[0022]
According to the fourth aspect, the plate and the hinge member are not easily disengaged in the structure in which the arcuate protrusion of the side groove and the concave groove formed in the plate are engaged. The shutter opening / closing plate has high strength against the force acting in the connecting direction. Further, since the plate is not easily damaged and the occurrence of collision sound and contact sound is prevented, the shutter has high durability and excellent usability.
[0023]
Further, according to the fifth aspect, in the case where the groove width of the concave groove is larger than that of the circular arc protrusion, the contact area between the concave groove and the circular arc protrusion is small, so that the concave and convex fitting closely Since the resistance is small, the shutter can be opened and closed smoothly with a smaller force.
[0024]
Further, according to the sixth aspect, in the configuration in which the arc protrusion of the side groove and the protrusion formed on the plate are engaged with each other, the connection direction of the plate is the same as the fourth aspect. The shutter opening / closing plate has high strength with respect to the acting force. In addition, since the sliding contact area between the protrusion and the arc protrusion is small, the shutter can be opened and closed smoothly with a smaller force.
[0025]
Further, according to the seventh aspect, when the hinge member has a cross-sectional shape that is long in the groove width direction of the guide groove, the hinge member is not easily bent, so that the force acting in the plate thickness direction of the plate is not affected. The shutter opening / closing plate has high strength. Further, the shutter can be opened and closed more smoothly.
[0026]
Further, according to the eighth aspect, in the case where the side groove is formed on one side of the hinge member, the plate is not easily caught by the guide rail when the shutter opening / closing plate is curved, and the shutter can be opened and closed smoothly. Can do. In addition, the difference in height between the hinge member and the plate is small, and the surface of the shutter opening / closing plate is flat, so the appearance of the shutter is excellent.
[0027]
Further, according to the ninth aspect, the height of the pair of side walls of the side groove is large when one is large and the other is small, and is low in a state where the shutter opening / closing plate is held by the guide rail standing upright in the vertical direction. When a liquid such as water is emitted from the surface side where the groove side wall is located, the liquid can be prevented from flowing out to the surface on the opposite side of the shutter opening / closing plate.
[0028]
In addition, according to the tenth aspect, by adjusting the engaging portion of the plate according to the groove width of the side groove before combining the plate and the hinge member, the resistance force that acts when the shutter opening / closing plate slides is further increased. Since it can be kept small, the shutter can be opened and closed more smoothly.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Next, the embodiment of the present invention described above will be described in detail with reference to the drawings.
A shutter which is an example of an embodiment of the present invention is shown in FIG.
As shown in FIG. 1, the shutter of this example includes a pair of guide rails 4 having a curved portion R, a shutter opening / closing plate 10 slidably held between the guide rails 4, and the guide rails. 4 and a rectangular base frame 44 for mounting and fixing 4.
As shown in FIG. 1, the guide rail 4 is an inverted U-shaped structure formed by alternately connecting linear straight members 41 made of aluminum and arcuate curved members 42, A guide groove 40 that slidably holds the shutter opening / closing plate 10 is formed in the guide rail 4 over its entire length.
Further, a side frame 43 for horizontally bridging the guide rails 4 is attached to the back of the shutter as a stopper for the shutter opening / closing plate 10.
[0030]
* Shutter opening / closing plate 10
As shown in FIGS. 1 and 4, the shutter opening / closing plate 10 includes a strip-shaped plate 1 made of a transparent synthetic resin material, a hinge member 2 that holds adjacent plates 1 flexibly, The shutter opening / closing plate includes an escape prevention plate 6 attached to the end of the hinge member 2 and a roller 5 that passes through the escape prevention plate 6 and is screwed to the end of the hinge member 2. A handle 6 for sliding this is attached to the lower end of 10.
[0031]
As shown in FIG. 3, the plate 1 has a half-section that is an engaging portion that is pivotably engaged with an arc-shaped protrusion 30 formed in a side groove 3 of the hinge member 2 described later. A circular protrusion 13 is formed to protrude.
The protrusion 13 is formed so that the plate thickness P of the edge of the plate 1 is larger than the groove width S of the open end of the side groove 3 and can be accommodated in the side groove 3. . Further, the side wall surface 130 on the center side of the protrusion 13 is formed to have an arc shape circumscribing the peripheral wall of the arc protrusion 30 formed at the open end of the side groove 3. The plate thickness of the plate 1 in this example is 2 mm, and the protruding height of the protrusion 13 from the surface of the plate 1 is set to about 0.5 mm.
[0032]
Before the plate 1 and the hinge member 2 are engaged, the plate thickness P of the edge portion of the plate 1 and the arcuate protrusion are matched to the groove width of the side groove 3 that actually holds the plate 1. The readjustment is performed by cutting or the like so that the shape and thickness of the side wall surface 130 which is a contact portion with the portion 30 have an appropriate value.
[0033]
As shown in FIG. 4, the escape prevention plate 6 is a metal thin plate member having substantially the same shape as an end face of the hinge member 2 to be described later, and a central portion thereof is in contact with the hinge member 2. An insertion hole 60 that communicates with the cavity 20 formed in the hinge member 2 is formed. A pair of clamping pieces 61 are formed on the left and right edges of the escape prevention plate 6 so as to be fitted on the hinge member 2.
As shown in FIG. 4, the roller 5 includes a rotation shaft 50 that is screwed into the cylindrical portion 21 of the cavity portion 20, and a columnar rotation head that is rotatable with respect to the rotation shaft 50. 51. Although not shown here, the base end portion of the rotation shaft 50 has a larger diameter than the insertion hole 60 of the escape prevention plate 6, and the escape prevention plate 6 is formed on the end surface of the hinge member 2. A circular flange to be pressed is formed.
[0034]
* Hinge member 2
As shown in FIGS. 2 and 3, the hinge member 2 is an aluminum columnar body having a substantially rectangular cross section that is long in the groove width direction of the guide groove 40, and gradually increases in width from the top toward the bottom. Is formed by extrusion molding so as to be small. The surface of the hinge member 2 is covered with a coating agent such as an acrylic resin material in order to prevent scratches and to reduce the contact sound generated when the plate 1 rotates.
A pair of lateral grooves 3 that hold the adjacent plates 1 in a rotatable and retaining state are formed symmetrically on the upper part of the hinge member 2. In addition, a hollow portion 20 is formed in the central portion of the hinge member 2 in order to reduce the weight.
[0035]
The side groove 3 has a large groove width for swingably accommodating an open end portion having a small groove width S for inserting and holding the plate 1 in a retaining state and a ridge portion 13 formed on an edge of the plate 1. As shown in FIG. 3, the upper end edge of the open end portion is formed with a rotation preventing portion 31 that prevents the plate 1 from rotating, and as shown in FIG. An arc projection 30 is formed on the edge of the plate 1 so as to freely engage with the projection 13 of the plate 1.
Here, the groove width S of the open end portion of the side groove 3 is substantially the same as the plate width W of the plate 1 and is smaller than the plate width P of the edge where the protruding portion 13 is formed. Is set. Therefore, the plate 1 is inserted from the open end in the longitudinal direction of the side groove 3 so that the protruding portion 13 is accommodated in the concave groove portion having a large groove width, and the hinge member 2 and the plate 1 are mutually connected in the longitudinal direction. The side groove 3 is held in a state where it is prevented from coming off.
[0036]
In this example, the groove width S of the open end is set to be slightly less than 2 mm in accordance with the plate 1, and the radius of the arcuate protrusion 30 is set to about 0.5 to 0.6 mm. .
The side groove 3 is in contact with the surface of the plate 1 together with the rotation preventing portion 31 and supports the lower groove side wall 32 for preventing the plate 1 from rotating upward, and the plate 1 The upper groove side wall 33 is configured to prevent the plate 1 from rotating downward by abutting and supporting the surface. In this case, as shown in FIG. The height is set to be larger than the height of the lower groove side wall 32.
[0037]
The lower groove side wall 32 is formed so as to maintain the plate in a horizontal posture indicated by a two-dot chain line in FIG. The upper groove side wall 33 is inclined so that the groove width increases from the open end having a small groove width toward the groove bottom, and the angle of the inclination is curved by the excessive rotation of the plate 1. The rotation of the plate 1 is set to be limited to a predetermined range so that the shutter opening / closing plate 10 is not caught in the guide groove 40.
[0038]
As shown in FIG. 3, the hollow portion 20 has a shape in which a rectangular tube portion 22 that is vertically elongated and a circular cylindrical portion 21 to which the rotating shaft 50 of the roller 5 can be attached. A screw capable of screwing the rotation shaft 50 of the roller 5 is formed at the mouth of the cylindrical portion 21.
[0039]
* Actual sliding of the shutter opening / closing plate 10
Next, the opening / closing operation of the shutter using the shutter opening / closing plate 10 will be described.
When the handle 11 is grasped from the closed state of the shutter and the shutter opening / closing plate 10 is pulled up, the adjacent plate 1 through the hinge member 2 is formed in each side groove 3 in the straight member 41. It is supported by the rotation preventing portion 31 and the lower groove side wall 32 and is moved in the sliding direction in a posture connected in a straight line parallel to the straight member 41.
As shown in FIG. 2, when the plate 1A held on the sliding direction side via the hinge member 2B reaches the curved portion R of the curve member 42, first, only the plate 1A precedes. It is pulled by the hinge member 2 </ b> A to be rotated with respect to the arc projection 30 of the side groove 3. At this time, the plate 1B held on the opposite side to the sliding direction of the hinge member 2B is maintained in a posture parallel to the straight member 41 without being rotated.
[0040]
Next, when the shutter opening / closing plate 10 is further slid and the hinge member 2B reaches the curved portion R, the opposite plate 1B held by the shutter member is also pulled and rotated in the bending direction. The adjacent plates 1A and 1B are slid in a bent posture through the hinge member 2.
When the shutter opening / closing plate 10 is further slid and the plates 1A and 1B are moved to the straight member 41 at the top of the shutter, the plates 1A and 1B are rotated in the opposite directions, respectively. 41 is a straight connection posture parallel to 41.
Also, when the shutter is changed from the open state to the original closed state, the plate 1 is similarly rotated.
[0041]
As described above, the plate 1 of the shutter opening / closing plate 10 in this example is rotated by the engagement between the small arc-shaped protrusion 30 formed at the open end of the side groove 3 and the protrusion 13 that circumscribes the protrusion. Therefore, compared with the hinge member 2 in which the inner cylinder 26 and the outer cylinder 27 of the conventional example are fitted, the friction generated between the plate 1 and the hinge member 2 is very small. The resistance force acting when moving 10 while curving 10 along the shape of the guide rail 4 is also small.
Therefore, even when the guide rail 4 has the curved portion R, the shutter can be opened and closed smoothly with a small force.
[0042]
Since the hinge member 2 has a substantially rectangular cross section which is long in the groove width direction of the guide groove 40, the hinge member 2 has a groove width direction as compared with the conventional example including the inner cylinder 26 and the outer cylinder 27. The load applied to the plate 1 held by the hinge member 2 is also small. Therefore, the shutter opening / closing plate 10 has high strength against the force acting in the plate thickness direction of the plate 1. Further, since the protruding portion 13 larger than the groove width S of the open end portion of the side groove 3 is held in the recessed groove portion of the side groove 3, the pulling force acting in the connecting direction at the time of sliding is The plate 1 is difficult to be disengaged. Therefore, the shutter opening / closing plate 10 has a high strength against the force acting in the connecting direction of the plate 1. Thus, the shutter of this example is not easily damaged and has high durability.
[0043]
In this example, since the side groove 3 is formed so as to be biased toward the upper part of the hinge member 2, when the shutter opening / closing plate 10 is slid, the plate 1 moves in the radial direction of the guide groove 40. It will be shifted to the outside. Therefore, the surface of the plate 1 is not easily caught in the guide groove 40 in the curved portion R, and the shutter can be opened and closed smoothly. Further, since the difference in height between the upper surface of the hinge member 2 and the surface of the plate 1 is small, the unevenness of the surface of the shutter opening / closing plate 10 is small, and the appearance of the shutter is excellent.
[0044]
Further, since the height of the upper groove side wall 33 of the side groove 3 is larger than the height of the lower groove side wall 32, the shutter opening / closing plate 10 is held by the upright guide rail 4 as shown in FIG. When a liquid such as water is radiated from the inside of the shutter closed by the shutter opening / closing plate 10, even if the liquid enters the side groove 3 from the lower groove side wall 32 positioned inside the shutter, the upper groove side wall It is difficult to flow out to the surface side of the shutter opening / closing plate 10 after getting over 33. Therefore, when operating a machine tool that scatters liquid inside the shutter, the liquid is prevented from leaking to the front side and contaminating the surface of the shutter.
[0045]
Further, since the upper groove side wall 33 is higher than the lower groove side wall 32 and the hinge member 2 is configured to have a lateral width that decreases from the upper part toward the lower part, the shutter opening / closing plate from the outside of the shutter shown in FIG. When the inside of the shutter is viewed through 10, the lower part of the hinge member 2 protruding inward of the shutter opening / closing plate 10 is difficult to enter the field of view. Easy to check. Furthermore, since the lower part of the hinge member 2 is inclined downward, liquid such as water tends to flow down along the inclined surface, and dust and the like are easily carried away by convection of air in the shutter. Therefore, it is possible to prevent water from collecting on the surface of the hinge member 2 and accumulation of dust.
[0046]
In this example, the adjacent plates 1 are selectively bent in only the bending direction of the guide rail 4 from the posture in which the adjacent plates 1 are connected in a substantially straight line by the rotation blocking portion 31 and the lower groove side wall 32. Thus, the shutter opening / closing plate 10 is not easily bent in the direction opposite to the bending direction. Further, since the upper groove side wall 33 prevents excessive bending in the bending direction, the plate 1 and the hinge member 2 are not easily caught in the guide groove 40 when the shutter opening / closing plate 10 is slid. Therefore, the shutter can be opened and closed smoothly.
[0047]
Further, since the plate 1 is abutted and supported by the rotation preventing portion 31 and the lower groove side wall 32, the hinge member 2 is not easily damaged by the rotation of the plate 1 and the durability of the shutter opening / closing plate. Is expensive.
[0048]
In this example, since the rollers 5 are attached to both ends of the shutter opening / closing plate 10, the shutter opening / closing plate 10 can be smoothly slid by the rotational movement of the roller 5. Further, since the open end in the longitudinal direction of the side groove 3 is closed by the escape prevention plate 6, the plate 1 jumps out of the side groove 3, and both end edges of the shutter opening / closing plate 10 become uneven. The shutter opening / closing plate 10 can be smoothly slid.
[0049]
In this example, before the plate 1 and the hinge member 2 are engaged with each other, the protruding portion 13 of the plate 1 is adjusted to the side groove 3 so that the side groove 3 is formed during extrusion molding. The error can be corrected when there is an error in the groove width or the protrusion 13. As a result, resistance due to poor engagement between the protrusion 13 and the arc protrusion 30 can be suppressed, so that the shutter can be opened and closed reliably and smoothly.
[0050]
* Other embodiments
The shutter of the present invention is not limited to the above embodiment.
FIG. 5 shows a configuration in which the arcuate protrusion 30 formed in the side groove 3 of the hinge member 2 and the concave groove 14 formed on one surface of the plate 1 are rotatably fitted.
The shutter opening / closing plate 10 in this example is similar to the above-described example in that a belt-like plate 1 made of a transparent synthetic resin material and a hinge member that is an aluminum columnar body that flexibly connects the plates 1 to each other. 2.
[0051]
The hinge member has a pair of groove side walls 32, 33 of the side groove 3 formed at substantially the same height, and an engaging portion that rotatably engages with the arc protrusion 30 of the side groove 3. The configuration is the same as that of the above-described embodiment except that the groove 14 is a semicircular groove 14 formed in the plate 1.
The plate 1 is obtained by cutting an already formed flat plate made of transparent synthetic resin into a predetermined width, and then forming the groove 14 by cutting. The groove 14 is a peripheral wall of the arcuate protrusion 30. The radius is set to be substantially the same as that of the arcuate protrusion 30 so as to be in sliding contact with the arcuate protrusion 30. In this example, the plate 1 has a thickness of 2 mm, and the radius of the arc-shaped protrusion 30 of the hinge member 2 and the radius of the concave groove 14 to be concavo-convexly fitted thereto are set to about 0.5 mm to 0.6 mm. Has been.
[0052]
In this example, before the shutter opening / closing plate 10 is manufactured by combining the plate 1 and the hinge member 2, the radius and shape of the concave groove 14 are actually set in the side groove 3 that holds the plate 1. It is readjusted by cutting to match the groove width at the open end.
[0053]
Since the plate 1 of this example has the above-described configuration, as shown in FIG. 5, the concave groove 14 is formed along the peripheral wall in a state where the concave groove 14 is closely unevenly fitted to the small-diameter arc projection 30. Since it is rotated, the sliding contact area between the plate 1 and the hinge member 2 is small and the rotation of the plate 1 is smooth. Therefore, as in the above-described embodiment, the resistance acting when the shutter opening / closing plate 10 is curved is smaller than in the conventional example, and the shutter can be smoothly opened and closed with a smaller force.
[0054]
Similarly to the above-described embodiment, since the sliding contact area between the plate 1 and the hinge member 2 is small, the resistance when sliding the shutter opening / closing plate 10 while curving is small, and smooth with a small force. Further, the shutter can be opened and closed at the same time, and the rotation of the plate 1 is restricted by the side groove 3, so that the shutter opening and closing plate 10 is not easily caught on the guide rail 4.
[0055]
In this example, since the arc projection 30 and the concave groove 14 are closely fitted to each other, the swing of the side groove 3 of the plate 1 in the groove depth direction is small and the arc projection Since the force in the swinging direction is received by 30, when the shutter opening / closing plate 10 is slid, the plate 1 is swung in the swinging direction due to the collision or contact between the plate 1 and the constituent wall of the side groove 3. As a result, the plate 1 is not easily damaged as compared with the above-described embodiment. Therefore, the durability of the shutter opening / closing plate 10 is high. In addition, since the collision or contact between the plate 1 and the side groove 3 is prevented, an unpleasant collision sound or contact sound is not generated when the shutter opening / closing plate 10 is slid.
[0056]
In FIG. 6, the concave groove 14, which is an engagement portion between the arcuate protrusions 30 a and 30 b, and the hinge member 2 in which the arcuate protrusions 30 a and 30 b are formed at both end edges of the open end of the side groove 3, The shutter opening / closing plate 10 is shown to be composed of a plate 1 formed so as to have a groove width larger than the diameter of the protrusions 30a, 30b.
The hinge member 2 in this example is a hollow cylindrical body made of aluminum, and as shown in FIG. 6, a pair of side grooves 3 are formed symmetrically in the center of the annular cross section. At the open end of the side groove 3, arcuate protrusions 30a and 30b that serve as pivot points of the plate 1 are formed along the circumference of the hinge member 2, and the groove bottom of the side groove 3 is the open end. It is a concave groove portion having a groove width larger than that between the circular arc protrusions 30a and 30b.
[0057]
An arcuate concave groove 14 having a radius r1 larger than the radius r2 of the arcuate protrusions 30a and 30b that are rotatably engaged is formed at the edge of the plate 1. In this example, the radius r1 of the concave groove 14 is set to be about 1.5 times the radius r2 of the arcuate protrusions 30a and 30b. Specifically, the radius r2 of the arc projections 30a and 30b is 0.5 mm, and the radius r1 of the concave groove 14 is set to 0.7 mm. The plate 1 has a thickness of 2 mm, and the groove 14 has a groove depth of about 0.5 mm.
[0058]
Since it is configured as described above, the radius r1 of the concave groove 14 and the radius r2 of the circular arc projection 30a that are rotatably engaged are formed in an arc having a different radius, so that the groove of the concave groove 14 is formed. If the width is large, the contact area with the arcuate protrusion 30 becomes smaller, so that the frictional force generated between the plate 1 and the hinge member 2 also becomes smaller. For this reason, as in the above-described embodiment, the resistance is smaller than that in which the concave groove 14 and the arcuate protrusion 30 are closely unevenly fitted, and the shutter can be smoothly opened and closed with a smaller force.
[0059]
In this example, unlike the above-described embodiment, the plate 1 swings in the groove depth direction of the side groove 3 because there is a margin in the concave-convex fitting between the arc projection 30 and the concave groove 14. In some cases, the plate 1 and the side wall of the side groove 3 contact each other. However, since the moment of swinging of the plate 1 in the groove depth direction is reduced by the arc-shaped protrusion 30, the collision that causes damage to the plate 1 and the generation of an awkward collision sound or contact sound are generated. Can be reduced. Therefore, like the above-described embodiment, the shutter opening / closing plate 10 has high durability and excellent usability.
[0060]
In this example, as shown in FIG. 6, when the plate 1 is held so as to rotate with the circular arc protrusion 30 a serving as a fulcrum, the other circular arc protrusion 30 b is used as the rotation blocking section 31. Therefore, the rotation of the plate 1 can be limited within a predetermined range as in the above-described embodiment. Further, since the side groove 3 is set so that the groove width on the groove bottom side is increased, as shown on the left side of FIG. It can be done.
In this example, the radius r1 of the concave groove 14 is set to be about 1.5 times the radius r2 of the arcuate protrusion 30, but in order to ensure smooth rotation of the plate 1. The radius r1 of the concave groove 14 is preferably set in the range of 1.1 to 2 times the radius r2 of the arcuate protrusion 30, and in particular, 1.2 times to 1 of the arcuate protrusion 30. A range of .5 times is considered the most suitable.
[0061]
* Other
In any of the embodiments shown in FIG. 3 and FIG. 5 described above, the rotation preventing portion 31 formed at the open end of the side groove 3 is curved in the guide rail 4 on which the shutter opening / closing plate 10 holds it. Although the rotation preventing portion 31 is formed so as to be bent only in the direction, it can allow rotation on the opposite side to the bending direction, for example, by providing a tapered surface at its open end. May be. However, the rotation of the plate 1 in the reverse direction is preferably limited to a rotation range in which the shutter opening / closing plate 10 is caught in the guide groove 40 and does not hinder the smooth opening / closing of the shutter.
[0062]
In the above-described embodiment, the plate 1 has a plate thickness of 2 mm. However, the plate thickness of the plate 1 is not limited to the above value. For example, the plate 1 is made of synthetic resin. If there is, a plate 1 having a thickness of 1 mm to 5 mm is often used depending on the purpose of use of the shutter. Therefore, it is necessary to change the groove width of the side groove 3 of the hinge member 2 in proportion to the thickness of the plate 1 held by the side groove 3. However, it is not necessary to change the size of the circular arc protrusion 30 formed at the open end of the side groove 3 together with the side groove 3, and it is better not to change the size in proportion to the plate thickness of the plate 1. It is considered preferable.
[0063]
When the arc protrusion 30 is increased in proportion to the plate thickness of the plate 1, the ridge 13 or the concave groove 14 that is rotatably engaged with the plate is inevitably increased. As a result, the plate 1 And the sliding contact area between the hinge member 2 and the hinge member 2 are increased. As a result, the friction generated when the plate 1 rotates is increased, the resistance when the shutter opening / closing plate 10 is slid is increased, and the shutter cannot be opened and closed smoothly.
Here, in the hinge member 2 of the above-described example, the radius of the arc projection 30 is set within the range of 0.4 mm to 1.0 mm regardless of the thickness of the plate 1 and the shape of the side groove 3. This is considered suitable for smooth rotation of the plate 1.
Further, the groove depth of the concave groove 14 of the plate 1 is set in the range of 0.4 mm to 1.0 mm from the relationship with the circular arc protrusion 30 regardless of the plate thickness of the plate and the radius of the concave groove 14. It is considered suitable to do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an overall configuration of a shutter according to an embodiment of the present invention.
2 is a cross-sectional view of a shutter opening / closing plate used in the shutter of FIG. 1;
FIG. 3 is a cross-sectional view showing a connection state between a hinge member and a plate.
FIG. 4 is an explanatory diagram showing a sliding state of a shutter opening / closing plate in a guide rail.
FIG. 5 is a cross-sectional view showing a connecting structure between a hinge member and a plate used in another shutter according to the embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a connecting structure between a hinge member and a plate used in another shutter according to the embodiment of the present invention.
FIG. 7 is a cross-sectional view showing a hinge member used in a conventional shutter.
[Explanation of symbols]
(1) ... Plate
(10) ... Opening / closing plate for shutter
(13) ... ridge
(14) ... Dove groove
(2) ・ ・ ・ Hinge member
(3) ・ ・ ・ Gutter
(30) ・ ・ ・ Arc protrusion
(31) ... Rotation prevention part
(32) ... Lower groove sidewall
(33) ・ ・ ・ Upper groove side wall
(4) ・ ・ ・ Guide rail
(40) ・ ・ ・ Guide groove
(5) ・ ・ ・ Roller
(6) ... Escape prevention plate
(R) ・ ・ ・ Bent

Claims (10)

A shutter opening / closing plate in which a plurality of belt-like plates are connected to each other by a hinge member, and a pair of guide rails formed with guide grooves for slidably holding the shutter opening / closing plate. In the shutter, the hinge member is a columnar body having a pair of side grooves that hold the edge of the plate in a rotatable and retaining state.
The side groove is formed so that the groove width on the groove bottom side is larger than the open end side, and an arc projection serving as a rotation fulcrum of the plate is formed on the edge of the open end. ,
The shutter is characterized in that an engaging portion is formed at an end edge portion of the plate so as to be able to freely engage with an arc projection of the side groove. The shutter according to claim 1,
The shutter is characterized in that the arc protrusion is formed on one end edge of the open end, and a rotation blocking portion for limiting the rotation of the plate held in the side groove is formed on the other end edge. . The shutter according to claim 1 or 2,
A pair of groove side walls of the side groove is formed so as to limit a rotation angle of a plate held in the side groove within a predetermined range. The shutter according to any one of claims 1 to 3,
The shutter is characterized in that the engaging portion is a concave groove formed on one surface of the plate. The shutter according to claim 4,
The shutter is characterized in that the groove width of the concave groove is formed so as to be larger than the diameter of the arc projection. The shutter according to any one of claims 1 to 3,
The shutter is characterized in that the engaging portion is a protruding portion that protrudes from one surface of the plate and is accommodated in the side groove. The shutter according to any one of claims 1 to 6,
The shutter is characterized in that the hinge member is a columnar body having a long cross-sectional shape in a groove width direction of a guide groove of a guide rail that holds the shutter opening / closing plate. The shutter according to any one of claims 1 to 7,
The shutter is characterized in that the side groove is formed to be biased to one side in the groove width direction. The shutter according to any one of claims 1 to 8,
A pair of groove side walls of the side groove is formed such that one groove side wall is high and the other groove side wall is low. The shutter according to any one of claims 1 to 9,
The shutter is characterized in that the engaging portion is adjusted according to the groove width of the side groove before being engaged with the hinge member.

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