JP3056678U - Operating handle bearing device for louver window opening and closing mechanism - Google Patents

Abstract

(57) [Problem] To provide an operating handle bearing device for a louver window opening / closing mechanism having excellent assembling workability and durability. A flat bearing ring (bearing metal) (15) for rotatably supporting a worm gear shaft (14) of an operation handle (16) to a case (10) attached and fixed to a vertical frame (11) of a louver window. ), A non-circular portion (32)
And the flat bearing ring (15) is non-rotatably fitted into the barrel (13) of the case (10), and is fixed in a state where it cannot be removed by caulking the barrel (13). .

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an operating handle bearing device for a louver window opening / closing mechanism.

[0002]

[Prior art]

 A worm wheel meshes with the worm gear on the worm gear shaft that is rotated by the operation handle, and an operating arm that is integrally extended from the worm wheel and a link arm that is common to each louver is a link arm of a fixed length. A louver window opening / closing mechanism for pivotally connecting the louvers by rotating the operation handle to raise / lower the interlocking rod and simultaneously open / close each louver is disclosed in, for example, Japanese Utility Model Laid-Open No. 56-76889 and Japanese Utility Model Publication No. No. 28394, which is well known.

In the former Japanese Utility Model Application Laid-Open No. Sho 56-76889, when the worm gear shaft (e) of the operating handle (a) is supported on the case body (b), the cylinder ( The opening edge of d) is swaged, and the worm gear shaft (e) is kept from falling off by the swaged portion (d ').

In the latter Japanese Utility Model Publication No. 4-28394, the worm gear shaft (3) of the operation handle (6) is locked to the case body (1) by the bush (4) and the retaining ring (5). Bearings.

[0005]

[Problems to be solved by the invention]

 However, the worm gear shafts (e) and (3) of the operation handles (a) and (6) are connected to the case body (b) and (1) by the swaging portion (d ') and the retaining ring (5) as in the above-mentioned known invention. In a configuration that only keeps the retainer in a locked state, there is a problem that the bearing member such as the bush (4) rotates together with the worm gear shaft (e) (3), thereby reducing its durability.

In other words, when the bearing member such as the bushing (4) is made of a hardened steel product having a high hardness, the case body (b) (1) is usually an aluminum die-cast product. Due to the rotation of the bearing member, the case body (b) (1) is shaved and is damaged early. Therefore, a hardened steel product that is effective for durability cannot be used as the bearing member.

In this regard, as shown in FIG. 12, when the worm gear shaft (2) of the operation handle (1) is rotatably supported on the case (3), a flat bearing ring (commonly referred to as a bearing metal) ( 4) is screwed and fastened to the case (3) to prevent its rotation and escape by driving the fixing pin (5). However, in this case, the outer peripheral surface of the flat bearing ring (4) and the case (4) are fixed. In addition to the need to apply mutually compatible screws to the inner peripheral surface of (3), drilling holes (6) and (7) for fixing pins (5) are also made to assemble them accurately. Must be done, which makes the operation extremely cumbersome and leads to high costs.

[0008]

[Means for Solving the Problems]

 The present invention is intended to improve such a problem. For this purpose, a case is fixed to the vertical frame of the louver window, and a worm gear shaft rotatably supported on the case via a flat bearing ring. The worm gear shaft has an operating handle that is inserted and integrated into the exposed end of the case, a worm wheel that is also meshed with the worm gear of the worm gear shaft, an operating arm that extends from the worm wheel, and each louver. A link arm pivotally connected to a common interlocking rod, and a louver window opening and closing mechanism that simultaneously opens and closes each louver through a lifting operation of the interlocking rod by rotating the operation handle.

First, a non-circular portion is formed on the outer peripheral surface of the flat bearing ring, and the flat bearing ring is non-rotatably fitted into the barrel portion of the case, and is used for caulking the barrel portion. It is characterized by being fixed in a more retaining state,

[0010] Second, a non-circular portion is formed on the outer peripheral surface of the flat bearing ring, the flat bearing ring is non-rotatably fitted into the mouth portion of the case, and a separate retaining ring for a hole is formed. Alternatively, it is characterized by being fixed in a retaining state by a plate spring.

[0011]

[Embodiment of the invention]

 Hereinafter, the specific structure of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2 showing the louver window opening and closing mechanism, (10) is a set screw (12) to a vertical frame (11) of the louver window. This is a case of an aluminum die-cast product attached and fixed by the above, and is provided with a mouthpiece portion (13) projecting continuously and integrally therefrom.

Reference numeral (14) denotes a worm gear shaft of a fixed length which is rotatably supported via a flat bearing ring (so-called bearing metal) (15) on a barrel portion (13) of the case (10). The boss (17) of the operation handle (16) is inserted into the tip end exposed from the mouthpiece (13), and is fixedly integrated with a pin or a set screw (18). (19) is a bush for bearing the base end of the worm gear shaft (14) to the case (10).

[0013] A worm gear (20) is engraved on the base end side of the worm gear shaft (14) buried in the case (10). A worm wheel (21) meshes with the worm gear (20), and is also rotatably supported in the case (10) via a pivot (22) orthogonal to the worm gear shaft (14). .

On the other hand, (23) is a plurality of louvers (blades) forming a louver window, and a swing arm (24) projecting integrally from the back surface of each of the louvers is provided in the vertical frame (24). 11) is rotatably pivoted by a support shaft (25). Similarly, the projecting tip of the swing arm (24) is attached to an interlocking rod (26) common to a plurality of louvers (23) via a pivot pin (27).

In addition, an interlocking rod (26) common to the plurality of louvers (23) and an operating arm (28) integrally extending from the worm wheel (21) toward the louver window have a fixed length. It may be pivotally connected via a link arm (29). (30) and (31) are a pair of upper and lower pivot pins.

Therefore, when the operation handle (16) is rotated from outside the case (10), the link arm (29) is rotated by the worm wheel (21) that meshes with the worm gear (20). The interlocking rod (26) common to the plurality of louvers (23) acts up and down via the louvers (23), and the louvers (23) can be opened and closed simultaneously.

The flat bearing ring (bearing metal) (15) for rotatably supporting the worm gear shaft (14) of the operating handle (16) to the case (10) is shown in FIGS. As enlarged and extracted, it is created as a contour having a non-circular portion (32) on its outer peripheral surface.

Then, such a flat bearing ring (15) is non-rotatably fitted into the barrel (13) of the case (10), and the barrel (13) is removed by caulking. It is fixed and maintained in the stopping state. (33) indicates the caulked portion.

In this regard, in the basic embodiment shown in FIGS. 3 and 4, the outer peripheral surface of the flat bearing ring (15) is formed into a regular polygon (regular octagon) whose non-circular portion (32) is a flat side. On the other hand, the inner peripheral surface of the barrel portion (13) in the case (10) is also formed in a regular polygon corresponding to this, and the outer peripheral surface of the flat bearing ring (15) is shown in FIG. Only when forming a regular even polygon such as a regular octagon as in FIG. 4 or a regular hexagon as in FIG. 5, the inner peripheral surface of the mouthpiece (13) has a pair of non-circular portions (32) facing each other. It can also be formed into a nearly elliptical shape with two flat sides corresponding to the above. This is because the flat bearing ring (15) fitted therein is kept from rotating.

FIGS. 6 to 9 show various contours of the outer peripheral surface of the flat bearing ring (15). In particular, the non-circular portion (32) has a spline shape as shown in FIG. When the unevenness is changed into a knurled shape such as 7, the inner peripheral surface of the mouthpiece portion (13) in the case (10) may be shaped as a circle circumscribing the entire surface thereof. .

By capping the barrel portion (13), the caulked portion (33) forms a non-circular portion (32) of the flat bearing ring (15), such as the spline-shaped or knurled-shaped concave portion. This is because the flat bearing ring (15) can be fixedly maintained in a non-rotatable manner if it bites into the housing. In this sense, the inner peripheral surface of the barrel portion (13) in the case (10) is inevitably required. It is not necessary to form the same shape corresponding to the outer peripheral surface of the flat bearing ring (15).

Next, FIGS. 10 and 11 show a modified embodiment of the present invention corresponding to FIGS. 3 and 4. In this case, instead of caulking the barrel portion (13) of the case (10), FIG. Then, a separate retaining ring for hole (34) or a leaf spring (not shown) having a similar shape is press-fitted and locked to the inner peripheral surface of the barrel portion (13), whereby the flat bearing ring ( 15) is fixed and maintained in a state where it cannot be removed from the case (10).

In this modified embodiment, the inner peripheral surface of the barrel portion (13) in the case (10) is replaced with a flat bearing ring (15) except for the case described with reference to FIGS. It is necessary to form the same shape that corresponds to the outer peripheral surface of. The other configuration is substantially the same as the above-described basic embodiment of FIGS. 3 and 4, and therefore only the corresponding reference numerals to FIGS. .

In either of the basic embodiment and the modified embodiment, the flat bearing ring (15) is fixedly and non-rotatably fixed to the barrel portion (13) of the case (10). Under this condition, the worm gear shaft (14) of the operating handle (16) is rotatably supported, so that it can be made of a hardened high-strength steel product. There is no danger that (10) will be damaged like scraping, and the durability can be significantly improved.

[0025]

[Effect of the invention]

 As described above, in the present invention, the case (10) fixed to the vertical frame (11) of the louver window and the case (10) are rotatably supported by the case (10) via the flat bearing ring (15). A worm gear shaft (14), an operating handle (16) integrated with the tip of the worm gear shaft (14) exposed from the case (10), and a worm gear (20) of the worm gear shaft (14). ), A link arm (29) pivotally connected to an operating arm (28) extending from the worm wheel (21) and an interlocking rod (26) common to each louver (23). ), And the louver windows are opened and closed simultaneously by opening and closing the louvers (23) through the raising and lowering action of the interlocking rod (26) by rotating the operation handle (16). In the mechanism,

A non-circular portion (32) is formed on the outer peripheral surface of the flat bearing ring (15), and the flat bearing ring (15) is non-rotatably fitted into the mouthpiece portion (13) of the case (10). In addition, since the structure is fixed to the retaining state by caulking the barrel portion (13), the problems of the prior art described at the beginning can be surely improved, and the assembling work can be performed extremely simply and efficiently. It is effective and helps reduce costs.

The flat bearing ring (15) is not only in a state of being prevented from falling out of the case (10) but also by a non-circular portion (32) of the outer peripheral surface thereof. ), It is fixed so that it cannot be rotated. Even if this is a quenched steel product, there is no risk of damaging the aluminum die-cast product case (10), and the steel product is more durable. Can be significantly improved.

Such an effect can be achieved in exactly the same manner by adopting the structure of claim 2, and a hole retaining ring (34) which replaces the caulking of the mouthpiece (13) or However, the similar common leaf spring can further improve its assembly workability and mass production effect.

[Brief description of the drawings]

FIG. 1 is a side view showing a louver window opening / closing mechanism.

FIG. 2 is an enlarged sectional view showing the operation handle bearing device of FIG. 1 in an extracted manner.

FIG. 3 is a partially enlarged sectional view of FIG. 2 showing a basic embodiment of the present invention.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a front view showing a flat bearing ring having a regular hexagonal outer peripheral surface.

FIG. 6 is a front view showing a spline-shaped flat bearing ring having an outer peripheral surface.

FIG. 7 is a front view showing a flat bearing ring having a knurled outer peripheral surface.

FIG. 8 is a front view of a flat bearing ring having a pair of convex portions facing the outer peripheral surface.

FIG. 9 is a front view of a flat bearing ring having a pair of concave portions facing the outer peripheral surface.

FIG. 10 is an enlarged cross-sectional view corresponding to FIG. 3 showing a modified embodiment of the present invention.

FIG. 11 is a sectional view taken along line 11-11 of FIG. 10;

FIG. 12 is a sectional view showing a conventional operation handle bearing device.

[Explanation of symbols]

 (10) · Case (11) · Vertical frame (13) · Tube section (14) · Worm gear shaft (15) · Flat bearing ring (bearing metal) (16) · Operation handle (20) · Worm gear (21) · Worm wheel (23), louver (24), swing arm (26), interlocking rod (28), operating arm (29), link arm (32), non-circular part (33), caulking part (34), hole Retaining ring

Claims (3)

[Utility model registration claims] 1. A case (10) fixed to a vertical frame (11) of a louver window, and a worm gear shaft (14) rotatably supported by the case (10) via a flat bearing ring (15). ), An operating handle (16) inserted into and integrated with the end of the worm gear shaft (14) exposed from the case (10), and a worm wheel also meshed with the worm gear (20) of the worm gear shaft (14). (21) and a link arm (29) pivotally connected to an operating arm (28) extending from the worm wheel (21) and an interlocking rod (26) common to each louver (23). A louver window opening / closing mechanism for simultaneously opening / closing each louver (23) via a raising / lowering action of an interlocking rod (26) by a rotation operation of a handle (16). Non-circular portion (32) on outer peripheral surface of flat bearing ring (15)
And the flat bearing ring (15) is non-rotatably fitted into the barrel (13) of the case (10), and is fixed in a state where it cannot be removed by caulking the barrel (13). An operating handle bearing device for a louver window opening / closing mechanism. 2. A case (10) attached to and fixed to a vertical frame (11) of a louver window, and a worm gear shaft (14) rotatably supported by the case (10) via a flat bearing ring (15). ), An operating handle (16) inserted into and integrated with the end of the worm gear shaft (14) exposed from the case (10), and a worm wheel also meshed with the worm gear (20) of the worm gear shaft (14). (21) and a link arm (29) pivotally connected to an operating arm (28) extending from the worm wheel (21) and an interlocking rod (26) common to each louver (23). A louver window opening / closing mechanism for simultaneously opening / closing each louver (23) via a raising / lowering action of an interlocking rod (26) by a rotation operation of a handle (16). Non-circular portion (32) on outer peripheral surface of flat bearing ring (15)
And the flat bearing ring (15) is non-rotatably fitted into the barrel portion (13) of the case (10), and is retained by a separate retaining ring (34) or a leaf spring. An operating handle bearing device for a louver window opening / closing mechanism, which is fixed. 3. The case (10) is made of an aluminum die-cast product, and the flat bearing ring (15) of the worm gear shaft (14) for the case (10) is made of a hardened steel product. Item 3. An operating handle bearing device for a louver window opening / closing mechanism according to Item 1 or 2.