TWI588345B - Operate operating aids and doors and windows - Google Patents

Description

Open operation auxiliary device and door and window

The present invention relates to an auxiliary device for opening operation and a door and window. The auxiliary device is attached to an openable and closable front end portion of the door sash of the door sash disposed in the open frame, and is operated to reduce the operating force when opening the door sash in the closed state in the open frame.

Among the doors and windows in which the door sash is opened and closed in the opening frame, there are doors and windows for opening the operation assisting means for reducing the operation force when the door sash in the closed state is operated in the opening direction. Such an auxiliary device for opening operation utilizes a lever principle to reduce the operation force required when the door sash is first opened to facilitate the opening operation of the door sash. For example, in the case of a door and window having a door sash that slides in the left-right direction, as an opening operation assisting device, a handle member and an operating member are provided on the design surface of the vertical frame located at the front end of the door sash.

The handle member has a fulcrum portion between the force point portion and the action point portion, and is rotatably supported by the pedestal portion. The handle member is attached to the vertical frame via the base with its center of rotation in the vertical direction. The force point portion of the handle member is disposed outside the base, and is movable between a normal position that is substantially perpendicular to the design surface of the vertical frame and an operation position where the protruding end portion faces the tail end side of the door sash. handle The action point portion of the member is disposed inside the susceptor, and is movable in the sliding direction of the door sash inside the susceptor as the force point portion moves.

The operating member is disposed at a position facing the longitudinal surface of the vertical frame at the front end of the door sash in the susceptor, and is movably disposed along the sliding direction of the door sash. When the operating member protrudes relative to the base, the protruding end portion can abut against the longitudinal surface of the vertical frame. The action point portion of the handle member is engaged with the base end portion disposed inside the base in the operating member.

According to the door and window having the opening operation assisting device as described above, if the hand is placed on the force point portion of the handle member and a force is applied in the direction in which the door sash is opened, the action member abuts against the longitudinal surface of the vertical frame. The base protrudes. Thereby, the reaction force from the vertical frame acts on the direction in which the door sash is opened, and the operation force required when the door sash is just opened can be alleviated. Further, after the door sash is opened, since the handle member returns to the normal position and the operating member is in the retracted state, the operating member does not interfere when the door sash is closed (for example, refer to Patent Document 1).

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2006-97248.

In the above-described opening operation assisting device, it is preferable to have the design of the door and window to be applied as shown in FIG. 12 of Patent Document 1, It is employed such that the action point portion where the handle member is not visible from the outside of the base covers the surrounding structure by the cover portion. Further, when the susceptor is molded with a resin, the manufacturing cost can be greatly reduced and the appearance quality can be improved as compared with the case of molding with a metal.

Here, in the above-described opening operation assisting device, when the door sash in the open state is closed, an operation force may be applied to the force point portion of the handle member. In other words, since the handle member that is placed in the normal position has a structure that protrudes substantially perpendicularly from the design surface of the vertical frame, there is a tendency that the force point portion is used as the handle, and the door and window fan is slid in the closed direction with the applied force. The situation. When an operation force is applied to the force point portion of the handle member in the direction in which the door sash is closed, the action point portion disposed inside the base is attempted to rotate toward the rear end of the door sash. Therefore, when the cover portion is disposed around the action point portion in order to improve the design, the operation force can be applied to the cover portion by the action point portion. Therefore, when the base resin is molded, there is a possibility that the cover portion is damaged by the operation force applied when the door sash is closed. Further, the above problem is also caused in the door and window formed in such a manner that the door sash is opened in the out-of-plane direction with respect to the opening frame.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an opening operation assisting device and a door and window which can improve the design of a door and window to be applied and reduce the manufacturing cost.

In order to achieve the above object, an auxiliary device for opening operation according to the present invention includes a base that is attached to an openable and closable door and window disposed in an opening frame of a door and window. a front end portion of the door sash of the fan; the operating member is movably disposed on the pedestal in a state in which the protruding end portion is in contact with the opening frame when the door sash is closed; and the handle member has a clip The force point portion and the action point portion extending in mutually different directions of the fulcrum portion of the rotation center are located outside the susceptor, and are engaged with the base end portion of the operation member at the action point portion In a state in which the fulcrum portion is rotatably disposed on the susceptor, the operating member is retracted with respect to the susceptor while the handle member is placed at a predetermined normal position, and is closed from the sash In a state in which the handle member is rotated and moved to a predetermined operation position, the action point portion moves the direction of the operation member in a direction protruding from the base, and the protruding end portion presses the opening frame. In the susceptor, a cover is provided so as to cover an action point portion of the handle member at a position on both sides of the imaginary orthogonal surface. And a reinforcing member that is disposed between the cover portion located on one side of the virtual orthogonal surface and the cover portion on the other side, the virtual orthogonal surface including a rotation center of the handle member and orthogonal to a mounting surface of the base and the door sash.

According to the invention, since the action portion of the handle member is covered by the cover portion, the design of the applied door and window can be improved. Further, a reinforcing member is provided on the cover portion of the base. Therefore, when the operation force is applied to the force point portion of the handle member when the door sash is closed, the cover portion is not damaged, so that the base can be molded with a resin. As the reinforcing member, it is preferable to use a member made of metal. The reinforcing member for reinforcing the susceptor is not a member that is disposed to be exposed to the outside, and therefore it is not necessary to consider the appearance quality, and it is not necessary to perform surface treatment. Therefore, when a member made of metal is used as the reinforcing member, the manufacturing cost can be suppressed as compared with the case where the base is formed of a metal.

Further, in the above-described opening operation assisting device, a support shaft member is provided at each of both end portions of the handle member, and a bearing seat portion that abuts against an outer circumferential surface of the support shaft member is formed in the base, and The reinforcing member is provided with a shaft support piece, and the support shaft member is sandwiched between the reinforcing member and the bearing seat.

According to the invention, since the support shaft member of the handle member is rotatably held by the bearing seat portion of the base and the shaft support portion of the reinforcing member, the support shaft member can be reliably supported even when the base is molded with a resin.

Further, in the above-described opening operation assisting device, the reinforcing member has a flat plate-like portion that is disposed between the one cover portion and the other cover portion, and a cover reinforcing portion that is from the substrate portion And extending in a direction perpendicular to a substantially right angle, and being accommodated in a recess provided in the cover portion of the base, the outer surface of the substrate portion being a mounting surface with the door sash, in the base a protrusion protruding inward is formed on an inner surface of a portion close to the mounting surface, and a portion corresponding to the protrusion in the substrate portion of the reinforcing member is formed with a card concave with respect to an outer surface as the mounting surface Face.

According to the present invention, by engaging the projection of the base with the engagement surface of the reinforcing member, the base and the reinforcing member can be integrally processed even before being attached to the door and window. Moreover, since the projection does not protrude from the mounting surface of the susceptor, it can be easily and reliably attached to the door and window.

Further, in the above-described auxiliary device for opening operation, the reinforcing member is provided The flat substrate portion is disposed to be disposed between the one cover portion and the other cover portion, and the cover reinforcing portion is extended from the substrate portion so as to be bent at a substantially right angle in the same direction. The outer surface of the substrate portion is placed in a recess provided in the cover portion of the base, and the outer surface of the substrate portion is mounted on the door sash, and the handle member is rotated to retract the operating member relative to the base The cover reinforcing portion is disposed on the cover portion on the side closer to the action point portion until the portion facing the action point portion.

According to the invention, when the operating force is applied to the closing direction of the door sash by the force point portion of the handle member, the portion of the cover portion in which the cover reinforcing portion of the reinforcing member is disposed is in contact with the action point portion of the handle member. Therefore, it is possible to more reliably prevent damage of the cover portion.

Further, in the door and window according to the present invention, any one of the above-described opening operation assisting devices is attached to the outer surface of the frame of the door sash located at the front end of the door sash.

According to the invention, since the action portion of the handle member is covered by the cover portion, the design of the door and window can be improved. Further, a reinforcing member is provided on the cover portion of the base. Therefore, when the operation force is applied to the force point portion of the handle member when the door sash is closed, the cover portion is not damaged, and the base can be molded with a resin, whereby the manufacturing cost can be suppressed.

According to the invention, since the action portion of the handle member is covered by the cover portion, the design of the applied door and window can be improved. Moreover, in the cover portion of the base Set the reinforcement parts. Therefore, when the operation force is applied to the force point portion of the handle member when the door sash is closed, the cover portion is not damaged, and the base can be molded with a resin, whereby the manufacturing cost can be reduced.

10‧‧‧Open border

20‧‧‧door sash

24‧‧‧ front door frame

30‧‧‧Open the auxiliary device for operation

31‧‧‧ handle parts

31a‧‧‧ fulcrum department

31b‧‧‧Power Point

31c‧‧‧Point of action

32‧‧‧Base

32b‧‧‧ bearing seat

32c‧‧‧ Cover

32c1‧‧‧ mounting surface

32e‧‧‧ Protrusion

32f‧‧‧ Groove

33‧‧‧Action parts

33a‧‧‧ Highlights

34‧‧‧Support shaft parts

40‧‧‧Strengthen components

41‧‧‧Parts Department

41a‧‧‧Outer surface

41b‧‧‧ engaging surface

42‧‧‧ Cover reinforcement

43‧‧‧Axis support piece

CP‧‧‧ imaginary orthogonal plane

Fig. 1 is a view of a door and window to which an opening operation assisting device according to an embodiment of the present invention is applied, viewed from an indoor side.

Fig. 2 is a perspective view showing the opening operation assisting device shown in Fig. 1. Fig. 2(a) is a perspective view showing the appearance when the handle member is placed at the normal position, and Fig. 2(b) is a perspective view showing the appearance when the handle member is placed at the operating position. .

Fig. 3 is a partial cross-sectional view showing the opening operation assisting device shown in Fig. 1. Fig. 3(a) is a bottom cross-sectional view of the handle member when it is placed at the normal position, and Fig. 3(b) is the bottom surface when the handle member is placed at the operating position. Partial section view.

Fig. 4 is an exploded perspective view showing the components of the opening operation assisting device shown in Fig. 1;

Fig. 5 is an exploded perspective view showing the base and the reinforcing member of the opening operation assisting device shown in Fig. 1;

Fig. 6 is an enlarged cross-sectional view taken along line A-A of Fig. 1.

Fig. 7 is an enlarged cross-sectional view taken along line B-B of Fig. 1.

Fig. 8 is an enlarged cross-sectional view taken along line C-C of Fig. 3(a).

Fig. 9 is an enlarged view showing a main portion of the door and window shown in Fig. 1. Fig. 9(a) is a cross-sectional view showing a state in which the opening operation assisting device is disposed at a normal position, and Fig. 9(b) is an operation for assisting the opening operation. A cross-sectional view of the position.

Hereinafter, the auxiliary device for opening operation of the present invention will be described in detail with reference to the drawings. And the best implementation of doors and windows.

Fig. 1 shows a door and window to which an opening operation assisting device according to an embodiment of the present invention is applied. The door and window exemplified herein is a double-slot sash window that supports the two door sashes 20 in the opening frame 10 so as to be slidable in the left-right direction.

The opening frame 10 is formed in a rectangular shape by combining the upper frame 11, the lower frame 12, and the left and right vertical frames 13 into a peripheral frame. Both of the door sashes 20 are constructed by attaching the upper frame 22, the lower frame 23, and the left and right vertical frames 24, 25 to the periphery of the glass 21 constituting the rectangle. These door sashes 20 are sized to close the opening frame 10 when the vertical frames 25 that are the rear end sides of the door sash are overlapped with each other. In addition, hereinafter, the vertical frame on the tail end side of the door sash in each of the door sashes 20 is referred to as "door end frame 25", and the vertical frame on the front end side of the door sash is referred to as "door front end frame 24" to distinguish the two.

In each of the door sashes 20, an opening operation assisting device 30 is provided on the design surface facing the indoor side of the door front end frame 24. The opening operation assisting device 30 is a device that operates to reduce the operating force when the door sash 20 in the closed state is slid in the opening direction, and includes a handle member 31, a base 32, and an operating member 33.

The handle member 31 is a portion that applies an operation force when the door sash 20 slides in the opening direction, and as shown in FIGS. 2 to 6 , the fulcrum portion 31 a and the force point portion 31 b extending from the fulcrum portion 31 a in mutually opposite directions and The action point portion 31c is integrally formed. The fulcrum portion 31a extends in the longitudinal direction of the door front end frame 24, and has support shaft members 34 at both end portions thereof. The support shaft member 34 is a cylindrical member having a small diameter, and protrudes from both end portions of the fulcrum portion 31a in a state where their axes coincide with each other. The configuration. The force point portion 31b is a portion extending in the radial direction around the axial center of the support shaft member 34, and the extension length from the support shaft member 34 is larger than the action point portion 31c. The action point portion 31c is provided at a portion substantially at the center of the fulcrum portion 31a. A blocking portion 31d is provided on both sides of the action point portion 31c.

The base 32 has a larger aspect dimension than the tab member 31. A receiving hole 32a is provided in a central portion of the base 32, and a bearing seat portion 32b is provided at a portion located at both ends of the receiving hole 32a. The accommodation hole 32a penetrates from the upper surface of the base 32 to the bottom surface, and is formed so that the force point portion 31b of the handle member 31 can pass through from the bottom surface side. The bearing housing portion 32b is an arcuate concave surface that is opened toward the bottom surface, and is formed to be slidably accommodated in the size of the support shaft member 34. As is clear from FIGS. 3 and 6, the arcuate concave surfaces of the two bearing housing portions 32b are located on the same axis, and are respectively biased so as to be close to the long side of one side of the base 32. In the following, for convenience of explanation, one of the two long sides of the susceptor 32 that is closer to the bearing seat portion 32b is referred to as a rear side, and the other is referred to as a front side.

The handle member 31 is disposed in the accommodation hole 32a in a state where the force point portion 31b protrudes from the upper surface of the base 32, and the respective support shaft members 34 are disposed in the bearing housing portion 32b so as to be centered on the axial center of the support shaft member 34. The rotation is supported on the base 32. As is clear from FIGS. 2 and 6, in the susceptor 32, a cover portion 32c is provided around the entire point of the action point portion 31c and the stopper portion 31d of the handle member 31. The cover portion 32c is provided such that its bottom surface 32c1 is located on the same plane over the entire circumference. The bottom surface 32c1 of the cover portion 32c constitutes a mounting surface of the susceptor 32 together with the outer surface 41a of the substrate portion 41 of the reinforcing member 40 to be described later. In the cover portion 32c, a portion on the front side of the virtual orthogonal surface CP that is orthogonal to the axial center of the support shaft member 34 and perpendicular to the bottom surface 32c1 of the susceptor 32 (hereinafter referred to as "front cover portion" 32c") A window hole 32d is provided. The window hole 32d is a substantially rectangular slit formed in a portion of the front cover portion 32c corresponding to the action point portion 31c of the handle member 31.

A spring member 35 is provided between the base 32 and the handle member 31. The spring member 35 together with the base 32 defines the rotational posture of the handle member 31. Specifically, when the operating force is not applied, the handle member 31 in FIG. 6 is biased counterclockwise by the spring force of the spring member 35, and the cover portion on the rear side with respect to the virtual orthogonal plane CP (hereinafter referred to as " The rear cover portion 32c") abuts, and the force point portion 31b is disposed substantially perpendicular to the bottom surface 32c1 of the susceptor 32 (normal position). When the operating force is applied to the force point portion 31b from this state, and the handle member 31 is rotated clockwise in FIG. 6 against the elastic force of the spring member 35, the action point portion 31c is disposed at a position close to the front cover portion 32c (action position). Further, when the operating force applied to the handle member 31 is removed from the state of being placed to the operating position, the handle member 31 is rotated counterclockwise to return to the normal state by the elastic restoring force of the spring member 35 as shown in FIG. position.

The operating member 33 is a member having a rectangular parallelepiped shape, and is slidable in a state in which it protrudes from the front cover portion 32c via the window hole 32d of the base 32 and a state in which it is retracted. Although not clearly shown in the drawing, in the operating member 33, the action point portion 31c of the handle member 31 can be engaged with the cover portion 32c of the base 32. Thereby, when the handle member 31 is rotated about the support shaft member 34, the operation member 33 slides with respect to the base 32. In other words, when the handle member 31 is placed at the normal position, since the action point portion 31c approaches the rear cover portion 32c, the operation member 33 is placed in the maximum retracted position with respect to the susceptor 32. On the other hand, when the handle member 31 is placed at the operation position, the action point portion 31c moves in the direction of approaching the front cover portion 32c, and therefore engages with the action point portion 31c. The action member 33 is disposed to a position protruding from the base 32.

Further, in the above-described opening operation assisting device 30, the reinforcing member 40 is provided on the base 32. The reinforcing member 40 includes a board portion 41 having a size covering the receiving hole 32a of the base 32, and a pair of cover reinforcing portions 42 extending from both sides of the board portion 41 so as to be bent at substantially right angles. In the present embodiment, the base 32 is formed of a resin, and the reinforcing member 40 is formed of a metal. The board portion 41 and the cover reinforcing portion 42 of the reinforcing member 40 are integrally formed.

In the reinforcing member 40, a shaft supporting piece portion 43 is provided at a portion of the substrate portion 41 corresponding to the bearing seat portion 32b of the base 32, respectively. The shaft support piece portion 43 is formed by cutting and erecting the substrate portion 41 in the same direction as the cover reinforcement portion 42, and the respective distal end portions are opposed to the bearing seat portion 32b of the susceptor 32. As is clear from FIG. 7, a semicircular arc-shaped recess that can be in sliding contact with the circumferential surface of the support shaft member 34 is formed at the front end portion of the shaft support piece portion 43. Each of the shaft support piece portions 43 is set to have bearings at the respective front end portions and the base 32 when the outer surface (mounting surface) 41a of the substrate portion 41 is positioned on the same plane as the bottom surface 32c1 of the base 32. The support shaft member 34 can be clamped between the seat portions 32b.

The reinforcing member 40 is inserted into the recess 32f provided in the front cover portion 32c and the rear cover portion 32c, and is disposed so as to be bridged between the front cover portion 32c and the rear cover portion 32c. The protrusion 32e provided on the cover portion 32c is attached to the base portion 32 by being engaged with the substrate portion 41. The projection 32e is a member that protrudes inward from a portion of the cover portion 32c of the base 32 from both end portions in the longitudinal direction, and is configured not to protrude from the bottom surface 32c1 of the base 32 as shown in FIG. On the other hand, the base of the reinforcing member 40 that is engaged with the projection 32e The plate portion 41 is provided with a concave engagement surface 41b having a size corresponding to the projection 32e. Therefore, the outer surface 41a of the substrate portion 41 in the reinforcing member 40 and the bottom surface 32c1 of the cover portion 32c are located on the same plane, and constitute the mounting surface of the susceptor 32.

As shown in FIG. 6, in the reinforcing member 40 attached to the base 32, the cover reinforcing portion 42 inserted into the recess 32f of the rear cover portion 32c reaches a height position opposed to the action point portion 31c of the handle member 31. The shaft support piece portion 43 is in a state of being sandwiched between the support shaft member 34 and the bearing seat portion 32b.

The opening operation assisting device 30 configured as described above is screwed to the base member 32 and the reinforcing member 40 by the screw member (not shown) passing through the base 32 and the reinforcing member 40 in a posture in which the operating member 33 faces the vertical frame 13 at the front end of the door sash. The door front end frame 24 is attached to a portion of the door front end frame 24 that is substantially at the center in the height direction. Between the vertical frame 13 located at the front end of the door sash, the following dimensions are ensured: when the handle member 31 is in the normal position, as shown in the left side of FIG. 1 and FIG. 9(a), the action member is closed when the door sash 20 is closed. 33 can also be separated from the vertical frame 13 and on the other hand, the protruding end portion 33a of the operating member 33 can abut against the vertical frame 13 in the middle of the movement of the handle member 31 toward the operating position. Further, reference numeral 36 in Fig. 2 denotes a cover member for covering a head portion of a screw member (not shown) that shields the base 32 from being screwed.

When the force point portion 31b of the handle member 31 in Fig. 1 is rotated counterclockwise in a state where the door sash 20 is closed, the protruding end portion 33a and the longitudinal direction of the operating member 33 are moved in the middle of the movement of the handle member 31 toward the operating position. When the frame 13 abuts and further applies an operation force in the same direction to the force point portion 31b, the action member 33 protrudes in a state where the projecting end portion 33a abuts on the vertical frame 13 from the vertical frame. The reaction force of 13 acts in the direction in which the door sash 20 is opened. Therefore, based on the above-described opening operation assisting device 30, the operating force required when the door sash 20 is just opened can be alleviated by the lever principle.

After the door sash 20 is opened, the handle member 31 returns to the normal position and the operating member 33 is retracted by the elastic restoring force of the spring member 35. Therefore, if an operation force is applied from the state in which the door sash 20 is closed in this state, the operation member 33 does not become an obstacle, and the door sash 20 can be slid to the closed state. When the door sash 20 is closed, if an operation force is applied to the force point portion 31b of the handle member 31, the handle member 31 becomes a handle, and this operation can be easily performed.

Here, when an operation force is applied to the force point portion 31b of the handle member 31 in the direction in which the door sash 20 is closed, an operation force is applied to the rear cover portion 32c by the action point portion 31c disposed inside the susceptor 32. As described above, the susceptor 32 including the rear cover portion 32c is a member molded of a resin. However, the reinforcing member 40 made of metal is provided in the rear cover portion 32c so as to straddle between the front cover portion 32c. In particular, the cover reinforcing portion 42 is provided in such a manner that the rear cover portion 32c reaches a height position facing the action point portion 31c of the handle member 31. Therefore, when the operating force is applied to the force point portion 31b of the handle member 31 in the direction in which the door sash 20 is closed, the rear cover portion 32c of the susceptor 32 is not damaged.

Further, since the susceptor 32 is formed of a resin, it is possible to give a warm feeling to the appearance as compared with the case of forming with a metal. Further, regardless of the operation state of the handle member 31, the action point portion 31c is always covered by the cover portion 32c of the susceptor 32. As a result, the design of the applicable door and window can be improved. Moreover, for the reinforcing member 40 for reinforcing the base 32, since it is not configured to be exposed outside The parts do not need to be considered for appearance quality and do not require surface treatment. Therefore, the opening operation assisting device 30 can be manufactured at a lower cost than in the case where the base 32 is formed by metal.

Further, in the above-described embodiment, the double-slot sash window that supports the two sashes 20 that can slide in the left-right direction in the opening frame 10 is exemplified, but one door sash may be left and right in the opening frame. A sliding window that slides in the direction, an upper sliding window that slides in the up and down direction, and the like, and a door and window that is slidably slidable in the opening frame can also be applied to open the door sash in the out-of-plane direction with respect to the opening frame. Doors and windows that open and close in a way.

30‧‧‧Open the auxiliary device for operation

31‧‧‧ handle parts

31a‧‧‧ fulcrum department

31b‧‧‧Power Point

31c‧‧‧Point of action

31d‧‧‧Block

32‧‧‧Base

32c‧‧‧ Cover

32a‧‧‧ receiving holes

32c1‧‧‧ mounting surface

33‧‧‧Action parts

34‧‧‧Support shaft parts

35‧‧‧Spring parts

36‧‧‧ Cover parts

40‧‧‧Strengthen components

41‧‧‧Parts Department

41a‧‧‧Outer surface

42‧‧‧ Cover reinforcement

CP‧‧‧ imaginary orthogonal plane

Claims (6)

An auxiliary device for opening operation includes: a base attached to an openable and closable front end portion of a door sash of a door sash disposed in an open frame of the door and window; and an action member having a protruding end when the door sash is closed a portion that is movable in a state of being in contact with the opening frame, and a handle portion that has a fulcrum portion that functions as a center of rotation and that extends in mutually different directions The force point portion is located outside the susceptor, and the fulcrum portion is rotatably disposed on the susceptor while the action point portion is engaged with the base end portion of the operating member; When the member is placed at a predetermined normal position, the operating member is retracted with respect to the susceptor, and when the sash is closed, the handle member is rotated and moved to a predetermined operating position. The moving member moves in a direction protruding with respect to the base, and the protruding end portion presses the opening frame; In the portion located on both sides of the imaginary orthogonal surface, the cover portion is provided so as to cover the action point portion of the handle member, and is placed on the side of the imaginary orthogonal surface. A reinforcing member is disposed between the cover portions on the other side, and the virtual orthogonal surface includes a rotation center of the handle member and is orthogonal to a mounting surface of the base and the door sash. The opening operation assisting device according to claim 1, wherein a support shaft member is provided at each of both end portions of the handle member, and a bearing seat portion that abuts against an outer circumferential surface of the support shaft member is formed in the base. And the reinforcing member is provided with a shaft support piece, in front of it The support shaft member is sandwiched between the bearing housing portions. The opening operation assisting device according to claim 1, wherein the reinforcing member has a flat plate portion that is disposed between the one cover portion and the other cover portion, and the cover reinforcement portion Each of the substrate portions is bent to be substantially at right angles in the same direction, and is housed in a recess provided in the cover portion of the susceptor; the outer surface of the substrate portion is a mounting surface of the door sash; An inner surface of a portion of the susceptor adjacent to the mounting surface is formed with a protrusion that protrudes inward, and a portion corresponding to the protrusion in the substrate portion of the reinforcing member is formed to be concave with respect to an outer surface as the mounting surface. Engagement surface. The opening operation assisting device according to claim 1, wherein the reinforcing member has a flat plate portion that is disposed between the one cover portion and the other cover portion, and the cover reinforcement portion Each of the substrate portions is bent to be substantially at right angles in the same direction, and is housed in a recess provided in the cover portion of the susceptor; the outer surface of the substrate portion is a mounting surface of the sash and the sash; When the handle member is rotated such that the operating member is retracted with respect to the susceptor, the cover reinforcing portion is disposed at a portion of the cover portion on the side closer to the action point portion until the portion facing the action point portion. The opening operation assisting device according to claim 1, wherein the operating member is also separable from the opening frame in a state in which the door sash is closed; and the moving member is in a middle stage of moving the handle member to the operating position The protruding end portion ensures a size that can abut the aforementioned opening frame. A door and window is provided with an opening operation assisting device described in any one of claims 1 to 5 on the outer surface of the frame of the door sash at the front end of the door sash.