JP2540311Y2 - Winding shaft support structure for lightweight shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a support structure of a winding shaft for winding a shutter curtain of a lightweight shutter.

[Conventional technology]

In the lightweight shutter, the wheel provided on the take-up shaft rotates to wind up the shutter curtain, so both ends of the take-up shaft are placed on bearing seats fixed to a bracket in the shutter case. We support in state.

This winding shaft uses two types of small diameter (diameter 34mm) and large diameter (diameter 43mm) according to the size and weight of the shutter curtain or the height of the slat. Two types of bearings, which are different in size depending on the outer diameter of the winding shaft, are also used.

[Problems to be solved by the invention]

For this reason, the product management of the bearing is troublesome, and the bearing may be attached incorrectly.

In addition, since the bearing simply rests both ends of the winding shaft on the seat, the rotation of the wheel that winds the shutter curtain causes the winding shaft to vibrate, and the vibration noise causes the bracket and the bracket that fix the bearing to rotate. There is a problem that the noise is transmitted to the entire shutter case and causes harsh noise.

In view of the above, the present invention provides a technology in which one bearing can be used for two types of winding shafts, a small diameter and a large diameter, and at the same time, noise generation due to vibration of the winding shaft supported by the bearing can be prevented. Is a subject.

[Means for solving the problem]

In order to solve this problem, the present invention is directed to a winding shaft support structure for a lightweight shutter that can support two types of winding shafts of a small diameter and a large diameter. A spacer made of a cushioning material is interposed between the bearing and the bearing that supports the bearing in a state where the bearing is placed, and the spacer winds the thickness interposed between the winding shaft and the bearing of the bearing. It is characterized by having a form that can be changed according to the outer diameter of the take shaft.

[Action]

According to the present invention, since the spacer made of the cushioning material is interposed between the winding shaft and the bearing seat, the vibration of the winding shaft is absorbed by the spacer. Therefore, the vibration is not transmitted to the bracket and the like, and no noise is generated.

Further, since the spacer has a form in which the thickness can be varied according to the outer diameter of the winding shaft, two types of winding shafts, a small diameter and a large diameter, can be supported by one type of bearing. . Therefore, it is not necessary to use two types of bearings as in the related art, so that the product management of the bearings is facilitated, and there is no possibility that the bearings are erroneously attached.

Furthermore, since one spacer can correspond to two types of winding shafts as in the case of the bearing, there is no danger of using the spacer by mistake.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective view showing an example of a support structure according to the present invention,
FIG. 2 is an enlarged view showing a main part thereof, and FIG. 3 is a perspective view showing an example of a spacer.

In the drawing, reference numeral 1 denotes a winding shaft on which a wheel 3 for winding up a shutter curtain 2 is rotatably mounted. The winding shaft 1 has a small-diameter winding shaft 1a and a large-diameter winding shaft 1b depending on the difference in the outer diameter. It is classified.

Reference numeral 4 denotes a bearing that can be shared by both the small diameter and the large diameter winding shafts 1, and is attached to brackets 6 fixed to the left and right side surfaces in the shutter case 5.

A spacer S formed of a cushioning material such as rubber or urethane resin is interposed between both ends of the winding shaft 1 and a seat 7 of the bearing 4 that supports the both ends on the bearing. I have.

For example, as shown in FIG. 3, the spacer S is provided between the winding shaft 1 and the receiving seat 7 of the bearing 4 by, for example, connecting two rubber sheets 8a and 8b so as to be separable at a perforation 9 or the like. It has a form in which the thickness interposed therebetween can be changed according to the outer diameter of the winding shaft 1.

In other words, when supporting the winding shaft 1a having a small diameter, as shown in FIG. 2, the winding shaft 1a is folded at the perforation 9 so that the two rubber sheets 8a and 8b are overlapped. It is interposed between 1a and the seat 7.

When the large-diameter winding shaft 1b is supported, one of the rubber sheets 8a, 8b is cut off from the perforation 9 and the rubber sheet 8a, 8b is interposed between the winding shaft 1b and the receiving seat 7. Be mounted.

Thus, since the vibration of the winding shaft 1 supported by the bearing 4 is absorbed by the spacer S, the vibration is prevented from being transmitted to the bracket 6 and the entire shutter case 5 to generate annoying noise.

In addition, since the thickness of the spacer S interposed between the winding shaft 1 and the seat 7 can be changed according to the outer diameter of the winding shaft 1, a single type of bearing 4 can be used to reduce the diameter of the small diameter and the large diameter. Two types of winding shafts 1a and 1b can be supported.

Therefore, it is not necessary to use two types of bearings as in the related art, so that the product management of the bearings is facilitated, and there is no possibility that the bearings are erroneously attached.

In addition, the form of the spacer S is not limited to the above, and may be as shown in FIGS.

That is, FIG. 4 is a perspective view showing a modified example of the spacer S, and FIGS. 5 (a) and (b) are front views showing the use state thereof. A concave portion 11a and a convex portion 12a that can bite each other, and a concave portion 11b
In the case of supporting the winding shaft 1a having a small diameter, the rubber sheet 10 is folded in half on the back side to increase the thickness, and the winding shaft 1a is formed. When the large-diameter winding shaft 1b is supported by being interposed between the receiving seat 7 and the large-diameter winding shaft 1b, the rubber sheet 10 is folded in half to the front side, and the left and right concave portions 11a and the convex portions 12b and the convex portions 12a and the concave portions are formed. 11b is interposed between the take-up shaft 1b and the seat 7 in a state where the thickness is reduced by engaging the 11b.

As a result, the winding shafts 1a and 1b having a small diameter and a large diameter can be supported at the same height by one kind of bearing 4, and the wide seat 7 which also supports the winding shaft 1b having a large diameter. The small-diameter winding shaft 1a mounted on the support seat 7 does not rattle in the receiving seat 7.

Next, FIGS. 6A and 6B are front views showing further modified examples of the spacer S. The small-diameter thick portion 13 supporting the small-diameter winding shaft 1a and the large-diameter winding The large-diameter thin portion 14 supporting the take-up shaft 1b has a form of an elliptical tube formed eccentrically up and down, and when using the small-diameter take-up shaft 1a, a small-diameter thick wall into which the shaft 1a is fitted. Attached to the bearing 7 of the bearing 4 so that the part 13 is on the lower side, and a large-diameter winding shaft
When the shaft 1b is used, the shaft 1b is mounted on the receiving seat 7 of the bearing 4 with the large-diameter thin portion 14 into which the shaft 1b is fitted being turned upside down.

In this case, as shown in FIGS. 6 (a) and 6 (b), it is not limited to the case where the small-diameter thick portion 13 and the large-diameter thin portion 14 are connected to each other. It may be a case where it is formed purposely.

[Effect of the invention]

As described above, according to the present invention, the damage of noise due to the vibration of the winding shaft of the lightweight chassis is eliminated, and the trouble of properly using two types of bearings according to the outer diameter of the winding shaft is also eliminated. It has a very good effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a winding shaft support structure according to the present invention, FIG. 2 is an enlarged view showing an essential part thereof, FIG. 3 is a perspective view showing an example of a spacer, and FIG. FIGS. 5 (a) and 5 (b) are perspective views showing an example, FIGS. 5 (a) and 5 (b) are front views showing the used state, and FIGS. 6 (a) and 6 (b) are also front views showing modified examples of the spacer. Explanation of reference numerals 1 ... winding shaft, 1a ... winding shaft with small diameter, 1b ...
... large diameter winding shaft, 4 ... bearing, 7 ... receptacle, S ...
... Spacer, 8a, 8b ... Rubber sheet, 10 ... Rubber sheet, 13 ... Small diameter thick part, 14 ... Large diameter thin part.

Claims (4)

(57) [Scope of request for utility model registration] 1. A winding shaft support structure for a lightweight shutter which can cope with two types of winding shafts of a small diameter and a large diameter, wherein both ends of a winding shaft (1) and both ends are mounted. A spacer (S) made of a cushioning material is interposed between the bearing (4) and the receiving seat (7), and the spacer (S) is connected to the winding shaft (1) and the bearing (4). 3.) A winding shaft supporting structure for a lightweight shutter, wherein the thickness interposed between the receiving shaft and the receiving seat (7) can be changed according to the outer diameter of the winding shaft (1). 2. When the spacer (S) has a form in which two rubber sheets (8a) and (8b) are detachably connected to each other and supports a winding shaft (1a) having a small diameter. The utility model is used in a state where the two sheets are folded so as to overlap each other, and when supporting a large-diameter winding shaft (1b), the utility model registration request used when one of the two sheets is cut off is used. 3. The winding shaft support structure according to claim 1. 3. The rubber sheet (10), wherein the spacer (S) is a rubber sheet (10).
A small diameter winding shaft (1a), which has a form in which irregularities that can be engaged with each other are formed on the left and right sides of the surface
When supporting the rubber sheet, the rubber sheet (10) is used in a state of being folded in two on the back side, and the winding shaft (1b) having a large diameter is used.
2. The winding shaft support structure according to claim 1, wherein the rubber sheet (10) is used in a state where the rubber sheet (10) is folded in two on the front surface side. 4. A small-diameter thick portion supporting the small-diameter winding shaft (1a) and a large-diameter thin portion supporting the large-diameter winding shaft (1b). (14) The winding shaft support structure according to claim 1, wherein the utility model has a shape of an elliptic tube comprising: