JPH0328136Y2 - - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention (industrial application field) The support fitting for a pulley for driving a ventilation window according to this invention is used to open and close a ventilation window installed at a high place for ventilation or smoke exhaust. It is used to support a pulley around which a chain is wrapped.

(Prior Art) It is widely practiced to provide ventilation windows for ventilation or smoke exhaust on the walls of ordinary houses. There are various types of structures for opening and closing such ventilation windows, but for example, there is a structure called geology, which has multiple glass plates parallel to each other that can be opened and closed by adjusting the angle. This is done by using an operator 1 as shown in FIG. This operator 1 consists of a main body 2 which has a built-in mechanism for changing the direction of rotation using gears, a handle 3 and a swinging arm 4.
When the handle 3 is rotated, the swing arm 4 swings in the direction of arrow a. A connecting arm, one end of which is pivotally attached to the tip of the swinging arm 4, is pivoted to an elevating rod that connects the plurality of glass plates in parallel to each other, and as the swinging arm 4 swings, the connecting arm The inclination angle of the glass panes can be changed simultaneously to open and close ventilation windows.

By the way, when the ventilation window is opened and closed by the operator 1, if the ventilation window is located at a high place that cannot be reached, the operator 1 is driven through a chain. That is, as shown in FIG.
Figure) is removed from the operator's input shaft 6, and the shaft 8 of the pulley 7 is connected to the input shaft 6 instead, and the endless chain 9 wrapped around the pulley 7 is hung down to a height that can be reached. When opening and closing the ventilation window, the chain 9 is circulated. 12
A cover for preventing the chain 9 from coming off the pulley 7 is open at the bottom as shown in FIG. 7, and is rotatably attached to the end of the shaft rod 8.

(Problems to be Solved by the Invention) However, when the ventilation window drive pulley is rotated by a chain in this manner, the following problems occur. That is, when the shaft rod 8 connecting the input shaft 6 of the operator 1 and the pulley 7 is short (for example, 50 mm
~60mm) is good, but since there is a protrusion below the operator 1, such as an eyelet, the shaft rod 8 should be made longer (for example,
(approximately 100 mm), the operator 1 can circulate the chain 9 that spans the pulley 7.
When an unreasonable force is applied to the input shaft 6 of
This is not preferable because it may break.

The object of the present invention is to provide a support fitting for a pulley for driving a ventilation window, which can eliminate such inconveniences.

b. Structure of the invention (means for solving the problem) The support fitting for the ventilation window drive pulley of the invention is made by bending a metal plate, and has a metal plate at one end for fixing the support fitting to the window frame, etc. the first position,
A second seat is formed at the other end for fixing a case that houses the pulley.

To explain in more detail with reference to the drawings, the support fitting 1
0 is a metal plate with one end formed in a fork shape, with both ends bent at right angles in the same direction, and the operator attaches this support metal plate to the end of the forked side. At the same time, first seats 11, 11 for fixing to a window frame or the like are formed, and a second seat 13 for fixing the cover 12 is formed at the other end. The first seats 11, 11 have small circular holes 14, 14, respectively.
The distance between the small circular holes 14, 14 is the same as that of the small circular holes 15, 15 (Fig. 5) for inserting the screws for fixing the main body 2 of the operator 1 to the window frame, etc. Make it the same as the spacing. On the other hand, the second seat 13 for fixing the cover has a circular hole 16 drilled in the center for inserting the shaft rod 8, and a circular hole 16 for inserting the cover fixing screw around this circular hole 16. Small circular holes 17, 17 are bored. The center part of the support fitting 10 is slightly bent and the operator 1
a shaft rod 8 whose one end is connected to the input shaft 6 of the second seat 1;
3 and make a right angle.

The support fitting 10 configured as described above is
Operator 1 and cover 1 as shown in Figures 2-4
It is used by being assembled between 2. That is, a screw 1 for fixing the main body 2 of the operator 1 to a window frame etc.
8, 18 into the small circular holes 14, 14 of the seats 11, 11 and the small circular holes 15, 15 of the main body 2 at the same time,
The main body 2 and the support fitting 10 are fixed to a window frame or the like. The other end of the shaft rod 8, one end of which is connected to the input shaft of the operator 1, is inserted through the circular hole 16 of the second seat 13, and the back plate 19 of the cover 12 is connected to the conventional structure shown in FIG. Similarly, it is rotatably passed through the cover 12 and fixed to the pulley 7 inside the cover 12. Back plate 1 of the above cover 12
9 and the second seat 13 of the support fitting 10 are screws 20,
20 to fix the bond.

c. Effects of the invention Although the support fitting for the pulley for driving a ventilation window of the present invention is constructed and assembled as described above, even when the pulley 7 inside the cover 12 is rotated by circulating the chain 9, Since the downward force generated is supported by the support fitting 10, no unreasonable force is applied to the shaft rod 8, and failures such as breakage of the shaft rod 8 can be prevented. In addition, the cover 12 is attached to the support fitting 10.
Since the opening edge of the cover and the chain do not collide strongly with each other, and the rotation of the pulley is Operation can be performed smoothly.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the support fitting of the present invention, Figure 2 is a perspective view showing the state of use, Figure 3 is a plan view seen from above in Figure 2, and Figure 4 is in the direction of the blade arrow in Figure 3. FIG. 5 is a side view of an operator installed at a low location, FIG. 6 is a plan view of a conventional operator for high locations, and FIG. 7 is a sectional view taken along line AA in FIG. 6. 1: Operator, 2: Main body, 3: Handle,
4: Swinging arm, 5: Connecting arm, 6: Input shaft, 7: Pulley, 8: Axial rod, 9: Chain, 10: Support metal fitting, 1
1: First seat, 12: Cover, 13: Second seat,
14, 15: small circular hole, 16: circular hole, 17: small circular hole, 18: screw, 19: back plate, 20: screw.

Claims (1)

[Scope of utility model registration request] First and second seats are formed at both ends by bending both ends of a metal plate with one end forked in substantially the same direction, and the first and second seats are formed at the end of the forked side. A pair of small circular holes were bored in the seat at the same spacing as the pair of small circular holes through which the fixing screws provided on the operator body for driving the ventilation window were inserted, and a pair of small circular holes were formed at the opposite end. The second seat has a ventilation window with a circular hole for inserting a shaft connecting the operator's input shaft and the pulley, and a small circular hole for inserting a screw for fixing the cover covering the pulley. Supporting hardware for drive pulley.