JP6950366B2 - Manufacturing method of gear and arm assembly, window switchgear and window opening / closing window - Google Patents

Description

The present invention relates to a method for manufacturing an assembly of a gear and an arm, which transmits torque to and from the gear and integrates the gear and an arm separate from the gear into the gear. The present invention also relates to a window opening / closing device used for an opening / closing window in which a shoji opens to the outside of the room using the assembly manufactured by the manufacturing method.

In the opening / closing window where the obstacle attached to the window frame opens to the outside of the room, the drive shaft (rotary shaft 21, shaft) that is supported by the base (main body 10, base 16) fixed to the window frame and extends substantially indoors and outdoors. A worm (21a, 14) coaxial with 15), a worm wheel (worm wheel 13, worm gear 19) that meshes with the worm and swings around a vertical axis, and an outdoor horizontal plane that swings integrally with the worm wheel. Some include a swing arm (rotary arm 14, drive arm 3) extending to, and a connecting arm (connecting arm 23, connecting rod 4) that connects the swing arm and the obstacle (2, 5) (for example,). See Patent Documents 1 and 2).
In such a window opening / closing device, a large operating force can be obtained by a small torque for rotating the operator handle (grip portion 22, crank handle 7) connected to the drive shaft, and when the shoji is opened, the worm wheel worms. You can keep the shoji open by using the feature (self-locking) that you cannot turn.

In the window opening / closing device of Patent Document 1, the worm wheel 13 and the rotating arm 14 are integrally formed. The worm wheel 13 is formed with gear teeth over substantially half a circumference, and these teeth mesh with the worm 21a.
In the window opening / closing device of Patent Document 2, the worm gear 19 and the drive arm 3 are formed separately and then coupled so as to rotate integrally. The worm gear 19 has gear teeth formed over about two-thirds of the entire circumference in order to make the depth compact, and these teeth mesh with the worm 14.

The window opening / closing devices of Patent Documents 1 and 2 include a mechanism capable of switching the opening angle of the shoji between fully open and half open (hereinafter, referred to as "shoji opening angle switching mechanism").
If the shoji is opened only halfway by the shoji opening angle switching mechanism, crime prevention and safety can be improved.

In the shoji opening angle switching mechanism in the window opening / closing device of Patent Document 1, a notch 13a is formed in a portion of the worm wheel 13 in which the gear teeth are not formed. Then, by rotating the pin 19 to position the protrusion 20a of the locking member 20 in the notch 13a, the tip of the protrusion 20a comes into contact with the inner surface of the notch 13a, so that the angle at which the shoji opens is half-opened. Further, by rotating the pin 19 so that the protrusion 20a of the locking member 20 is not positioned in the notch 13a, the angle at which the shoji is opened is fully opened.

In the shoji opening angle switching mechanism in the window opening / closing device of Patent Document 2, the control means for controlling the drive arm 3 so as to switch the opening angle of the shoji between fully open and half open, and the control means are selected between the half open state and the fully open state. An operation means for operating the operation means and an operation means for operating the operation means are provided.

The control means is a control hole 30 formed by a relative wide hole 28 arranged on the same arc line centered on the rotation center on the drive arm 3 side and a narrow hole 29 communicating with the wide hole 28. A flange portion that is connected to the shaft portion 32 that can reciprocate between the wide hole 28 and the narrow hole 29 and the lower end of the shaft portion 32 so that the wide hole 28 can pass in the vertical direction but cannot pass through the narrow hole 29. Including the control pin 34 formed by 33, the control pin 34 is fitted in the control hole 30 at the position of the wide hole 28, and the rotation of the drive arm 3 is rotated by the relative movement with the narrow hole 29. The control pin 34 is pulled out from the control hole 30 at the position of the wide hole 28, and the drive arm 3 is released from the restriction on the rotation angle to the angle corresponding to the full opening of the obstacle. Make it rotatable.

The operating means includes a lever 35 whose middle is swingably supported by a fulcrum, and the lever 35 has a control pin 34 fixed to one end thereof, and a spring 39 at the other end so that the control pin 34 faces the control hole 30. The operating means further includes an operating piece 40 that swings the lever 35 in combination with the spring 39, and the operating piece 40 pushes the lever 35 down between its fulcrum and the spring acting point. It reciprocates between the position where the control pin 34 is pulled out from the control hole 30 and the position where the control pin 34 is fitted into the control hole 30 by releasing the push-down on the lever 35.
The knob 8 as the operating means is connected to the operating piece 40, and reciprocates the operating piece 40 between the pushing-down position with respect to the lever 35 and the releasing position thereof.

Japanese Unexamined Patent Publication No. 11-223067 Japanese Unexamined Patent Publication No. 10-280798

As an opening / closing window that opens to the outside of the room, the number of opening / closing windows with a slim appearance is increasing from the viewpoints of design, efficient lighting, and ensuring privacy.
Since the substrate of a window opening / closing device used for an opening / closing window having such a slim appearance is visible from the indoor side, it is desirable to make the substrate as small as possible mainly from the design aspect, and thereby a neat window opening / closing device. And because it becomes an opening and closing window, the product value is high.
Moreover, even when a window opening / closing device is used for a normal-looking opening / closing window that is not a slim-looking opening / closing window, if the window opening / closing device can be miniaturized, the base or operator handle of the window opening / closing device may be a curtain, a roll screen, or the like. In addition to being less likely to interfere with the window, the presence of the window opening / closing device in the opening / closing window is reduced, giving a neat impression, which improves the design.

In the configuration of the window opening / closing device as in Patent Document 1, since the worm wheel 13 and the rotary arm 14 are integrally formed, the portion of the worm wheel 13 that does not form the gear teeth and the rotary arm 14 does not protrude. A notch 13a constituting the obstacle opening angle switching mechanism is formed. As a result, the place where the locking member 20 constituting the shoji opening angle switching mechanism, which is provided with the protrusion 20a to be positioned in the notch 13a when the opening angle of the shoji is half-opened, is arranged in the main body 10 is limited. NS.
In addition, since a large force is applied to the rotating arm 14 and the worm wheel 13 that rotate to open and close the shoji, the worm wheel 13 has teeth that the worm 21a meshes with in order to ensure the operation of the window opening and closing device. It is necessary to secure sufficient strength and rigidity. If the notch 13a is formed deeper to the inner diameter side of the worm wheel 13, sufficient strength and rigidity cannot be ensured. Therefore, the notch 13a is formed within a range up to about the tooth bottom circle (see FIG. 3 of Patent Document 1).
Therefore, it is difficult to miniaturize the window opening / closing device.

In the configuration of the window opening / closing device as in Patent Document 2, the worm gear 19 and the drive arm 3 are formed separately and then coupled so as to rotate integrally.
The control hole 30 constituting the control means in the shoji opening angle switching mechanism is provided on the drive arm 3 side, and the control pin 34 constituting the control means engages and disengages from above the control hole 30 by vertical movement. .. The vertical movement of the control pin 34 is performed by swinging the lever 35 constituting the operating means in the shoji opening angle switching mechanism. The swing of the lever 35 is performed by the knob 8 constituting the operating means in the shoji opening angle switching mechanism.

Then, the operating means and the operating means of the shoji opening angle switching mechanism are placed on the right side of the rectangular plate-shaped base 16 so as to sandwich the worm gear 19 together with the worm 14 located on the left side of the rectangular plate-shaped base 16. To position.
Therefore, the depth of the base (base 16) of the window opening / closing device is compact, but the width (length in the left-right direction) is not compact.
Moreover, since the shoji opening angle switching mechanism in the window opening / closing device of Patent Document 2 is composed of the control means, the operation means, and the operation means, the structure is complicated, so that the manufacturing cost increases.

In the configuration of the window opening / closing device as in Patent Document 2, the drive arm 3 is a separate component from the worm gear 19 that transmits torque to and from the worm gear 19. Therefore, an assembly in which the worm gear 19 and the drive arm 3 are integrated is formed.
Since such a gear and arm assembly (worm gear 19 and drive arm 3) is a member that drives the shoji 5 via the connecting rod 4, a large force acts on the assembly. It is necessary to improve the strength of the entire assembly and the wear resistance of the gears.

In the gear and arm assembly (worm gear 19 and drive arm 3), two holes 26 formed by extrusion on the lower plate-shaped portion 22 of the drive arm 3 are formed in the worm gear 19. Torque is transmitted by fitting to 27. When torque is transmitted through such an uneven fitting portion, the worm gear 19 and the drive arm 3 may rattle.
Moreover, since it cannot withstand the force in the direction of pulling the worm gear 19 and the drive arm 3 apart in the axial direction, for example, the base 16 is made of metal and a rivet (shaft 20) is passed through the hole at the center of rotation of the assembly. It needs to be tightened. This is because if this is not done, the worm gear 19 and the drive arm 3 may be separated from each other and idle during operation.

Therefore, in the assembly of the gear and the arm to which a particularly large force is applied, the strength of the entire assembly and the wear resistance of the gear are improved, the rattling of the gear and the arm is suppressed, the reliability is improved, and the base of the assembly is improved. There is room for improvement from the perspective of facilitating installation on.

In view of the above background, the problem to be solved by the present invention is to manufacture a gear and arm assembly that transmits torque to and from the gear, integrates the gear and a separate arm into the gear. While suppressing the increase in cost, the strength of the entire assembly and the wear resistance of the gears are improved, the rattling of the gears and the arms is suppressed to improve the reliability, and the assembly can be easily attached to the substrate. It is to provide the manufacturing method of the said assembly which can be done.
Another object to be solved by the present invention is to provide a window opening / closing device used for an opening / closing window in which a shoji opens to the outside of the room using the assembly manufactured by the manufacturing method.
Further, the problem to be solved by the present invention is to make the depth of the substrate and the length of the substrate in the direction along the frame member of the window frame to which the substrate is attached compact in the window opening / closing device provided with the shoji opening angle switching mechanism. And so that the manufacturing cost does not increase.

The method for manufacturing a gear-arm assembly according to the present invention is a method for manufacturing a gear-arm assembly that transmits torque between the gear and integrates the gear and an arm that is separate from the gear into the gear. There,
The assembly is composed of the gear, the arm, and the rivet.
The gear is a worm wheel
The arm is a swing arm that extends in the horizontal plane in the outdoor direction or in the vertical plane in the outdoor direction, which is used for the window opening / closing device of the opening / closing window in which the shoji attached to the window frame opens to the outside.
The assembly is located at the position of the rotating shaft core of the worm wheel.
It has a center hole of the worm wheel and a center hole of a base end portion of the swing arm that fits the center hole.
The worm wheel , the swing arm, and the rivet are made of steel.
The worm wheel has through holes at a plurality of positions radially separated from the central hole.
The swing arm has through holes at a plurality of locations radially separated from the central hole.
Wherein together combined with the central hole of the worm wheel and said central hole of said swing arm, so as to match the said hole of said swing arm and said hole of said worm wheel, said worm wheel and said oscillating An assembly step of aligning the arms, inserting the rivet into the through hole of the worm wheel and the through hole of the swing arm, and crimping and fixing the shaft end to form the assembly.
A surface hardening step of quenching the assembly to harden the surface,
(Claim 1).

According to the method of manufacturing such a gear and arm assembly, the assembly is composed of gears, arms and rivets, which are made of steel. Then, the entire assembly that has undergone the assembly process is quenched.
Therefore, the cost can be significantly reduced as compared with quenching the gear and the arm separately, and the rivet is also quenched, so that the strength of the assembly can be improved and the gear and the arm are firmly integrated.
Moreover, since the gears are hardened, the wear resistance of the gears is improved.
Furthermore, since the gear and arm are firmly integrated, it is possible to suppress rattling of the gear and arm and improve reliability, and it is necessary to rivet the rotating shaft core of the gear to a metal substrate. Therefore, the assembly can be easily attached to the substrate.

The window opening / closing device according to the present invention is an opening / closing window in which a shoji attached to a window frame opens to the outside in order to solve the above-mentioned problems.
A worm coaxial with the drive shaft, which is supported by a substrate fixed to the window frame and extends substantially indoors and outdoors.
A worm wheel that meshes with the worm and swings around a vertical axis or a horizontal axis.
A swing arm that swings integrally with the worm wheel and extends in the horizontal plane in the outdoor direction or in the vertical plane in the outdoor direction.
Includes a connecting arm that connects the swing arm and the shoji.
A window opening / closing device that opens / closes the shoji.
The substrate of the window opening / closing device is made of synthetic resin.
The worm wheel and the swing arm are separate parts, and both parts are made of steel.
The worm wheel has through holes at a plurality of positions radially separated from the central hole.
The swing arm has through holes at a plurality of locations radially separated from the central hole.
The worm wheel and the swing are aligned so that the center hole of the worm wheel and the center hole of the swing arm are aligned, and the through hole of the worm wheel and the through hole of the swing arm are aligned. The arm is aligned, and a steel rivet is inserted into the through hole of the worm wheel and the through hole of the swing arm to clamp and fix the shaft end, and the assembly is assembled. all SANYO obtained by surface hardening perform quenching after,
The assembly, with respect to the base of the window opening and closing device, the center hole and the center hole of the swing arm, der Rukoto to be attached by inserting the shaft is not a rivet of the worm wheel (Claim 2 ).

According to such a configuration, the worm wheel and the swing arm are separate parts, both parts are made of steel, and a plurality of points radially separated from the rotation axis of the worm wheel are rivets made of steel. An assembly that has been crimped and fixed is used, and since the assembly is hardened by quenching after assembly, it has the same effect as the manufacturing method of the assembly of the gear and the arm.

Here, the swing arm has a notch at its base end and has a notch.
It is a preferable embodiment that the angle at which the shoji is opened is switched between fully open and half open by causing a locking piece that is supported by the substrate and swings around the vertical axis or the horizontal axis to appear and disappear in the notch. Claim 3 ).

According to such a configuration, the worm wheel and the swing arm are separate parts, and the worm wheel is not a component of the shoji opening angle switching mechanism. Therefore, it is not necessary to provide the worm wheel with a structure such as a notch of the shoji opening angle switching mechanism, so that the strength and rigidity of the worm wheel on which a large force acts does not decrease.
In addition, the notch at the base end of the swing arm and the locking piece that appears and disappears in the notch are the parts that make up the shoji opening angle switching mechanism, and the structure of the shoji opening angle switching mechanism is simple. The operation of the opening angle switching mechanism is assured, and the increase in manufacturing cost can be suppressed.
Furthermore, by locating the notch at the base end of the swing arm radially inward with respect to the tooth bottom circle of the worm wheel, the depth of the substrate of the window opening / closing device including the shoji opening angle switching mechanism, and the above-mentioned The length of the substrate in the direction along the frame member of the window frame to which the substrate is attached can be made compact.
Therefore, since the window opening / closing device is small and has a neat appearance, it can also be used for an opening / closing window having a slim appearance.
Further, even when the window opening / closing device is used for the opening / closing window having a normal appearance, which is not the opening / closing window having a slim appearance, the base of the window opening / closing device and the operator handle are less likely to interfere with the curtain, the roll screen, etc. The presence of the window opening / closing device in the window is reduced to give a neat impression, which improves the design.

The opening / closing window according to the present invention is an opening / closing window in which a shoji attached to a window frame opens to the outside of the room, and is provided with the window opening / closing device (claim 4 ).

According to the method for manufacturing the assembly of the gear and the arm as described above, and the window opening / closing device used for the opening / closing window in which the shoji opens to the outside of the room using the assembly manufactured by the manufacturing method, the following are mainly described. It has the effect shown.
(1) The cost can be significantly reduced as compared with quenching the gear and the arm separately, and since the rivet is also quenched, the strength of the assembly can be improved, and the gear and the arm are firmly integrated.
(2) Since the gear and arm are firmly integrated, it is possible to suppress rattling of the gear and arm and improve reliability, and it is necessary to rivet the rotating shaft core of the gear to a metal substrate. Since there is no such assembly, the assembly can be easily attached to the substrate.

Further, according to the window opening / closing device provided with the shoji opening angle switching mechanism having the above configuration, in addition to the effects of (1) and (2), the following effects are mainly exhibited.
(3) Since it is not necessary to provide the worm wheel with a structure such as a notch of the shoji opening angle switching mechanism, the strength and rigidity of the worm wheel on which a large force acts does not decrease.
(4) Since the configuration of the shoji opening angle switching mechanism is simple, the operation of the shoji opening angle switching mechanism can be ensured and an increase in manufacturing cost can be suppressed.
(5) The depth of the base of the window opening / closing device including the shoji opening angle switching mechanism and the length of the base in the direction along the frame member of the window frame to which the base is attached can be made compact.

It is explanatory drawing which shows the manufacturing method of the assembly of the gear and arm which concerns on embodiment of this invention, (a) is the disassembled perspective view which shows the assembly process, (b) is the assembly of the gear and arm formed in the assembly process. It is a three-dimensional perspective view. FIG. 5 is a cross-sectional plan view showing a closed state of an opening / closing window provided with a window opening / closing device according to an embodiment of the present invention. Similarly, it is a cross-sectional plan view showing a state in which the shoji is fully opened. Similarly, it is a cross-sectional plan view showing a state in which the shoji is half-opened. It is a perspective view which shows the cover which covers the substrate of the window opening / closing device transparent. Similarly, it is a perspective view which shows by removing a cover and making a substrate transparent. It is an exploded perspective view of the window opening / closing device viewed from diagonally above. It is also a partially decomposed perspective view. It is a partial decomposition perspective view of a window opening / closing device viewed from diagonally below. It is an enlarged plan view of the main part of the window opening / closing device which shows by removing the cover covering the substrate and making the substrate transparent in a state where the opening angle of the shoji is fully opened by the shoji opening angle switching mechanism. It is an enlarged plan view of the main part of the window opening / closing device which shows by removing the cover covering the substrate and making the substrate transparent in a state where the opening angle of the shoji is half-opened by the shoji opening angle switching mechanism. (A) is an enlarged bottom view of a main part of the window opening / closing device, and (b) is an enlarged cross-sectional bottom view of a main part of the window opening / closing device.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all embodiments that satisfy the requirements described in the claims. It is a waste.
In the present specification, the front side in the direction from the indoor side to the outdoor side is referred to as the front side, the rear side is referred to as the rear side, the left and right sides are referred to as the front side, and the view seen from the indoor side is the front view.

<Manufacturing method of gear and arm assembly>
As shown in the exploded perspective view of FIG. 1 (a) and the perspective view of FIG. 1 (b), the gear and arm assembly A according to the embodiment of the present invention includes a worm wheel 5, a swing arm 6, and the like. And rivets I and I, all made of steel.
The gear and arm assembly A of the present embodiment is used for a window opening / closing device provided with a shoji opening angle switching mechanism or a window opening / closing device not provided with a shoji opening angle switching mechanism.

The worm wheel 5 has a tooth portion 5A formed on the entire circumference thereof and has a central hole 5B.
Further, the worm wheel 5 has through holes 5C and 5C at positions that are 180 ° out of phase with respect to the center of rotation so as to sandwich the center hole 5B.
In such a worm wheel 5, for example, a high-strength steel plate, a chrome molybdenum steel plate, or a carbon steel plate is press-processed to remove the outer shape, and the center holes 5B and the through holes 5C and 5C are drilled, and then the teeth are cut. Form 5A.

The swing arm 6 has a central hole 6C at the base end portion 6A and a through hole at the tip end portion 6B.
Further, the swing arm 6 has through holes 6D and 6D at positions different from the rotation center by 180 ° with respect to the center of rotation so as to sandwich the center hole 6C at the base end portion 6A, and also has a notch portion 6E.
Such a swing arm 6 is formed from, for example, a high-strength steel plate, a chrome molybdenum steel plate, or a carbon steel plate by press working.

The rivet I is formed from, for example, a carbon steel rod by press working.
The rivet I may be a commercially available product, but the surface is not hardened by quenching.

(Assembly process)
The through holes 5C and 5C of the worm wheel 5 and the through holes 6D and 6D of the swing arm 6 are aligned. In that state, the center hole 5B of the worm wheel 5 and the center hole 6C of the swing arm 6 are aligned.
As shown in FIG. 1A, the rivets I and I are inserted into the through holes 6D and 6D and the through holes 5C and 5C to crimp the shaft end. As a result, as shown in FIG. 1B, the worm wheel 5 and the swing arm 6 are integrated by the rivets I and I crimped at two points radially separated from the rotation axis of the worm wheel 5. It becomes the assembly A of the gear and the arm.
The rivets I, I, ... May be crimped at three or more locations radially separated from the rotation shaft core of the worm wheel 5.

(Surface hardening process)
Next, a surface hardening step of quenching the assembly A of the gear and the arm formed in the assembly step to harden the surface is performed.
Quenching includes, for example, carburizing quenching, nitriding quenching, vacuum quenching, induction hardening and the like.
After quenching, it may be re-quenched if necessary.

According to the manufacturing method as described above, since the entire assembly A of the gear and the arm is hardened, the cost can be significantly reduced and the rivet can be significantly reduced as compared with quenching the worm wheel 5 and the swing arm 6 separately. Since I and I are also hardened, the strength of the assembly A can be improved, and the worm wheel 5 and the swing arm 6 are firmly integrated.
For example, in a twist test in which the swing arm 6 is fixed and the operator handle K (FIG. 5) is turned, the manufacturing of the present invention is more than the assembly A manufactured by the method of quenching the worm wheel 5 and the swing arm 6 separately. The assembly A manufactured by the method was about 20% stronger.
Moreover, since the worm wheel 5 is hardened, the wear resistance of the worm wheel 5 is improved.
Furthermore, since the worm wheel 5 and the swing arm 6 are firmly integrated, rattling of the worm wheel 5 and the swing arm 6 can be suppressed to improve reliability, and the rotation axis of the worm wheel 5 can be improved. It is not necessary to rivet the metal base, so that the assembly A can be easily attached to the base.

The method for manufacturing the assembly of the gear and the arm as described above is other than the assembly A in which the gear is the worm wheel 5 and the arm is the swing arm 6, such as the assembly A of the gear and the arm used in the window opening / closing device. Can also be applied to. That is, the gear may be a cylindrical gear other than the worm wheel, and the arm may be a swing arm other than the swing arm of the window opening / closing device.

Next, as an example of using the gear and arm assembly A, an opening / closing window provided with a window opening / closing device will be described.

<Opening / closing window equipped with a window opening / closing device>
In the opening / closing window provided with the window opening / closing device 1 according to the embodiment of the present invention shown in the cross-sectional plan view of FIGS. The vertical sliding window L is shown as an example of an opening / closing window to which the opening / closing device 1 opens and closes and the present invention is applied.
In the vertical sliding window L, through the upper and lower window stays M and M attached between the upper frame of the window frame C and the upper frame of the shoji D, and between the lower frame of the window frame C and the lower frame of the shoji D. , The shoji D is supported by the window frame C.
In FIGS. 2 to 4, the operator handle K (see, for example, FIG. 5) that transmits the drive input to the drive shaft 3 is not shown.

<Window opening / closing device>
The window opening / closing device 1 includes a shoji opening angle switching mechanism N that switches the opening angle of the shoji D between the fully open in FIG. 3 and the half open in FIG. When the knob F is set to the positions shown in FIGS. 2 and 3, the shoji D opens to the fully open position shown in FIG. 3, and when the knob F is set to the position shown in FIG. 4, the shoji D opens only to the half open shown in FIG.
If the shoji D is opened only halfway by the shoji opening angle switching mechanism N, crime prevention and safety can be improved.

As shown in the cross-sectional plan view of FIG. 3 and the perspective views of FIGS. 5 and 6, the window opening / closing device 1 is attached to the base 2 fixed to the frame member (lower frame in the present embodiment) of the window frame C. A worm 4 that is supported and extends substantially indoors and outdoors and is coaxial with the drive shaft 3, a worm wheel 5 that meshes with the worm 4 and swings around the vertical axis B1, and a worm wheel 5 that swings integrally with the worm wheel 5 outdoors. A swing arm 6 extending in a horizontal plane of direction and a connecting arm 7 for connecting the swing arm 6 and the shoji D are included.
The base end portion 7A of the connecting arm 7 is pivotally connected to the tip portion 6B of the swing arm 6, and the tip end portion 7B of the connecting arm 7 is pivotally connected to the shoji side metal fitting E.
By rotating the operator handle K shown in FIG. 5, the torque is transmitted to the worm wheel 5 via the drive shaft 3 and the worm 4, so that the shoji D opens and closes via the swing arm 6 and the connecting arm 7. do.

Since the substrate 2 of the window opening / closing device 1 is made of synthetic resin and is covered with the cover G as shown in FIGS. 7 and 8, it has a compact and smooth appearance.
According to the present invention, since the base 2 becomes very compact as described later, the window opening / closing device 1 remains compact even if a cover G for covering the base 2 is provided for one compact base 2. ..
Then, by exchanging the cover G according to the design and color tone of the opening / closing window using the window opening / closing device 1, it is possible to obtain the window opening / closing device 1 suitable for various designs and color tones simply by exchanging the cover G. Therefore, the product value can be increased.

As shown in the disassembled perspective view seen from diagonally above FIG. 7 and the partially disassembled perspective view seen from diagonally below FIG. 9, the worm wheel 5 of the gear and arm assembly A has teeth 5A on the entire circumference thereof. As shown in the enlarged plan view of the main part of FIG. 10, a part of the tooth portion 5A meshes with the worm 4.

The base end portion 6A of the swing arm 6 and the worm wheel 5 in the assembly A are inserted into the opening 2A of the base 2. Further, the contact piece 9 is inserted into the opening 2A of the substrate 2 so as to be aligned with the swing arm 6.
The shaft H with knurling is press-fitted into the through hole 2C of the synthetic resin substrate 2, the center hole 5B of the worm wheel 5, the center hole 6C of the swing arm 6, and the through hole 9A of the contact piece 9. As a result, the assembly A is swingably supported by the base 2 around the vertical axis B1, and the contact piece 9 is fixed to the base 2.
Since the worm wheel 5 and the swing arm 6 of the assembly A are firmly integrated, it is not necessary to rivet the rotating shaft core of the worm wheel 5 to the metal substrate, and the synthetic resin substrate is used. The assembly A can be easily attached to the substrate 2 simply by press-fitting the shaft H with a knurl into the base 2.

As shown in the disassembled perspective view seen from diagonally above in FIG. 7 and the partially disassembled perspective view seen from diagonally above in FIG. 8, the spline shaft 3A of the drive shaft 3 is inserted into the through hole 8B of the guide member 8 to form a collar. With the portion 3B in contact with the guide member 8, the threaded portion 8A of the guide member 8 is screwed into the screw hole 2B of the base 2. As a result, as shown in the perspective view of FIG. 6, the drive shaft 3 and the worm 4 are shafted by the base 2 in a state where the worm 4 meshes with the tooth portion 5A of the worm wheel 5 and the spline shaft 3A protrudes from the base 2. It is rotatably supported around the core.
A base end portion of the operator handle K is attached to the spline shaft 3A using a set screw (not shown).

As shown in the disassembled perspective view seen from diagonally above FIG. 7 and the partially disassembled perspective view seen from diagonally below FIG. 9, the rivet J is inserted into the through hole 2D of the substrate 2 and the through hole 12A of the engaging body 12. , The two-sided width shaft portion 13A of the rivet J is fitted into the two-sided width hole 10A of the locking piece 10, and the D-shaped shaft portion 13B of the rivet J is fitted into the D hole 11A of the operation piece 11 to form the shaft end. Tighten.
Further, a knob F is attached to a portion of the operation piece 11 shown in the partially disassembled perspective view seen from diagonally above FIG. 8 so as to project outward from the base 2 after the cover G is attached to the base 2.

The base 2 to which each component is assembled as described above is fixed to the frame member (lower frame in the present embodiment) of the window frame C by using the mounting holes 2E and 2E.
With the window opening / closing device 1 as described above, the shoji D can be opened / closed by operating the operator handle K shown in FIG.
Further, as shown in the enlarged plan view of the main part of FIGS. 10 and 11, the locking piece 10 can be swung around the vertical axis B2 by operating the knob F.

At the position of the knob F shown by the solid line in the enlarged plan view of the main part of FIG. 10, the enlarged bottom view of the main part of FIG. 12A, and the bottom view of the enlarged cross section of the main part of FIG. 12B, the engaging body 12 Since the engaging convex portion 12B engages with the engaging concave portion 11B at the tip of the operating piece 11, the positions of the knob F, the operating piece 11, and the locking piece 10 are fixed, and the swing arm 6 swings at that position. Even so, the locking piece 10 does not enter the notch 6E.
Therefore, as shown in FIGS. 2 and 3, and FIG. 10, by rotating the drive shaft 3, the shoji D is appropriately changed from the closed state (FIG. 2) to the fully opened state (FIG. 3). Can be opened to the position.

An enlarged plan view of the main part of FIG. 11 and an enlarged plan view of the main part of FIG. 11 in which the knob F is swung as shown by an arrow in the enlarged bottom view of the main part of FIG. At the position of the knob F shown by the two-dot chain line in the enlarged bottom view of the main part of 12 (a) and the enlarged bottom view of the main part of FIG. 12 (b), the side portion of the locking piece 10 is the contact piece 9. Since the engaging convex portion 12B of the engaging body 12 engages with the engaging concave portion 11C at the tip of the operating piece 11 by contacting the abutting portion 9B, the positions of the knob F, the operating piece 11, and the locking piece 10 are fixed. At that position, the locking piece 10 is inserted into the notch 6E of the swing arm 6.
Therefore, as shown in FIGS. 2 and 4, and 11, by rotating the drive shaft 3, the shoji D is appropriately changed from the closed state (FIG. 2) to the half-opened state (FIG. 4). Can be opened to the position.

As described above, the angle at which the shoji D opens is switched between fully open and half open by causing the locking piece 10 that is supported by the substrate 2 and swings around the vertical axis B2 to appear and disappear in the notch 6E of the swing arm 6. be able to. The locking piece 10 that is supported by the substrate 2 and swings around the vertical axis B2 and is operated by the knob F, and the notch 6E of the swing arm 6 in which the locking piece 10 appears and disappears, switch the opening angle of the shoji. It constitutes a mechanism N.

As shown in FIGS. 10 and 11, the vertical axis B2, which is the swing center of the locking piece 10, is located on the indoor side of the worm wheel 5 within the width of the tooth tip circle diameter of the worm wheel 5.
Therefore, the width (length in the left-right direction) of the base 2 of the window opening / closing device 1 can be made very compact as shown in FIGS. 10 and 11, so that the window opening / closing device used for the opening / closing window having a slim appearance. It becomes suitable as 1.

According to the window opening / closing device 1 having the above configuration, the worm wheel 5 and the swing arm 6 are separate parts, and the worm wheel 5 is not a component of the shoji opening angle switching mechanism N. Therefore, it is not necessary to provide the worm wheel 5 with a structure such as a notch portion of the shoji opening angle switching mechanism N, so that the strength and rigidity of the worm wheel 5 on which a large force acts does not decrease.
Further, the notch 6E of the base end portion 6A of the swing arm 6 and the locking piece 10 appearing and disappearing in the notch 6E are components constituting the shoji opening angle switching mechanism N, and the shoji opening angle switching mechanism N Since the configuration is simple, the operation of the shoji opening angle switching mechanism N can be ensured, and an increase in manufacturing cost can be suppressed.

Further, by locating the notch 6E of the base end portion 6A of the swing arm 6 radially inward with respect to the tooth bottom circle of the worm wheel 5, the window opening / closing device 1 including the shoji opening angle switching mechanism N The depth of the base 2 and the width (length in the left-right direction) of the base 2 can be made compact.
Therefore, since the window opening / closing device 1 has a small size and a neat appearance, it can also be used for an opening / closing window having a slim appearance (for example, a vertical sliding window L having a small width as shown in FIGS. 2 to 4).
Further, even when the window opening / closing device 1 is used for the opening / closing window having a normal appearance, which is not the opening / closing window having a slim appearance, the base 2 of the window opening / closing device 1 and the operator handle K are less likely to interfere with the curtain, the roll screen, or the like. At the same time, the presence of the window opening / closing device 1 in the opening / closing window is reduced to give a neat impression, so that the design is improved.

Further, since the worm wheel 5 is a gear having a normal shape having tooth portions 5A on the entire circumference, which is not a special shape as in Patent Documents 1 and 2, machining is easy. As a result, the manufacturing cost can be reduced and a precise gear can be formed. Therefore, since the strength of the worm wheel 5 can be maintained, the worm wheel 5 can be formed more compactly.
In addition, since the tooth portion 5A is provided on the entire circumference of the worm wheel 5, it meshes with the worm 4 from any position in the circumferential direction. The degree of freedom in designing the angle etc. of

The window opening / closing device 1 in the above description includes the shoji opening angle switching mechanism N. As described above, the window opening / closing device using the assembly manufactured by the method for manufacturing the gear and arm assembly of the present invention. May not be provided with a shoji opening angle switching mechanism.
Further, in the above description, the manually operated window opening / closing device in which the drive shaft and the worm are rotated by the operator handle has been described, but the window opening / closing device is not limited to such a manually operated configuration. Instead, the drive shaft may be electrically operated, for example, by connecting the drive shaft to the output shaft of an actuator such as a geared motor.
Further, the opening / closing window and the window opening / closing device installed at a high place may be opened / closed by a ball chain or the like from below.

In the above description, the case where the opening / closing window to which the window opening / closing device is applied is a vertical sliding window, but the opening / closing window to which the window opening / closing device is applied is a horizontal sliding window, a single-door window, a protruding window, or the like. It may be present, that is, the shoji attached to the window frame may open to the outside of the room.
Therefore, the window opening / closing device of the present invention is attached to an upper frame or a vertical frame instead of the lower frame, depending on the configuration of the opening / closing window to which the window opening / closing device is applied.
When the window switchgear is mounted on a vertical frame, the worm wheel swings around the horizontal axis, the swing arm that swings integrally with the worm wheel extends into the vertical plane in the outdoor direction, and the locking piece is horizontal. It swings around the axis.

A Gear and arm assembly B1, B2 Vertical shaft core C Window frame D Obstacle E Obstacle side metal fittings F Knob G Cover H Shaft with lorette I, J Rivets K Operator handle L Vertical sliding window (opening and closing window) M Window stay N Obstacle Opening angle switching mechanism 1 Window opening / closing device 2 Base 2A Opening 2B Screw hole 2C, 2D Through hole 2E Mounting hole 3 Drive shaft 3A Spline shaft 3B Gear part 4 Warm 5 Warm wheel 5A Tooth part 5B Center hole 5C Through hole 6 Swing Arm (arm) 6A Base end 6B Tip 6C Center hole 6D Through hole 6E Notch 7 Connecting arm 7A Base end 7B Tip 8 Guide member 8A Thread 8B Through hole 9 Contact piece 9A Through hole 9B Contact part 10 Locking piece 10A Two-sided width hole 11 Operation piece 11A D-hole 11B, 11C Engagement recess 12 Engagement body 12A Through hole 12B Engagement convex part 13A Two-sided width shaft part 13B D-shaped shaft part

Claims (4)

A method for manufacturing an assembly of a gear and an arm, in which torque is transmitted to and from the gear, and an arm separate from the gear is integrated with the gear.
The assembly is composed of the gear, the arm, and the rivet.
The gear is a worm wheel
The arm is a swing arm that extends in the horizontal plane in the outdoor direction or in the vertical plane in the outdoor direction, which is used for the window opening / closing device of the opening / closing window in which the shoji attached to the window frame opens to the outside.
The assembly is located at the position of the rotating shaft core of the worm wheel.
It has a center hole of the worm wheel and a center hole of a base end portion of the swing arm that fits the center hole.
The worm wheel , the swing arm, and the rivet are made of steel.
The worm wheel has through holes at a plurality of positions radially separated from the central hole.
The swing arm has through holes at a plurality of locations radially separated from the central hole.
Wherein together combined with the central hole of the worm wheel and said central hole of said swing arm, so as to match the said hole of said swing arm and said hole of said worm wheel, said worm wheel and said oscillating An assembly step of aligning the arms, inserting the rivet into the through hole of the worm wheel and the through hole of the swing arm, and crimping and fixing the shaft end to form the assembly.
A surface hardening step of quenching the assembly to harden the surface,
Characterized by including
How to manufacture gear and arm assemblies. In the opening and closing window where the shoji attached to the window frame opens to the outside of the room
A worm coaxial with the drive shaft, which is supported by a substrate fixed to the window frame and extends substantially indoors and outdoors.
A worm wheel that meshes with the worm and swings around a vertical axis or a horizontal axis.
A swing arm that swings integrally with the worm wheel and extends in the horizontal plane in the outdoor direction or in the vertical plane in the outdoor direction.
Includes a connecting arm that connects the swing arm and the shoji.
A window opening / closing device that opens / closes the shoji.
The substrate of the window opening / closing device is made of synthetic resin.
The worm wheel and the swing arm are separate parts, and both parts are made of steel.
The worm wheel has through holes at a plurality of positions radially separated from the central hole.
The swing arm has through holes at a plurality of locations radially separated from the central hole.
The worm wheel and the swing are aligned so that the center hole of the worm wheel and the center hole of the swing arm are aligned, and the through hole of the worm wheel and the through hole of the swing arm are aligned. The arm is aligned, and a steel rivet is inserted into the through hole of the worm wheel and the through hole of the swing arm to clamp and fix the shaft end, and the assembly is assembled. all SANYO obtained by surface hardening perform quenching after,
The assembly, with respect to the base of the window opening and closing device, the center hole and the center hole of the swing arm, der Rukoto to be attached by inserting the shaft is not a rivet of the worm wheel Features,
Window switchgear. The swing arm has a notch at its base end and has a notch.
By infesting the notch with a locking piece that is supported by the substrate and swings around the vertical axis or the horizontal axis, the angle at which the shoji opens can be switched between fully open and half open.
The window opening / closing device according to claim 2. The shoji attached to the window frame is an opening and closing window that opens to the outside of the room.
An opening / closing window provided with the window opening / closing device according to claim 2 or 3.

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