JP4310573B2 - Door-to-door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door cart having a retaining function suitable for a relatively light door such as a screen door.
[0002]
[Prior art]
In a conventional door such as a screen door, a door wheel is attached to the lower part, and a slip-off preventing member is attached to the upper part. Then, the door is adjusted by adjusting the height of the door pulley, and the door stopper is prevented from being adjusted by adjusting the vertical position of the stopper member (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-4-52391
[0004]
[Problems to be solved by the invention]
Although the conventional door can adjust the height, it does not have a function to prevent it from coming off. For this reason, a detachment prevention member is attached to the upper part of the door to prevent detachment.
[0005]
Therefore, when the door is attached to the window frame, it is necessary to adjust both the height of the door carriage at the lower part of the door and the adjustment of the position of the locking member at the upper part of the door. Adjustment was troublesome. In particular, it is difficult to adjust the position of the stopper member located at a high position. Further, when the door is attached, the adjustment of the position of the stopper member may be forgotten, so that the door is easily removed.
[0006]
An object of the present invention is to solve the above-described problems, and to provide a door cart that is easy and reliable to adjust when a door is attached, and that has a function of preventing the door from coming off.
[0007]
[Means for Solving the Problems and Effects of the Invention]
The door wheel of claim 1 is a door wheel that is attached to the lower part of the door and moves on a rail, and includes an outer frame fixed to the door, an inner frame attached to the outer frame so as to be movable up and down, and an inner frame. Switch between a wheel that is rotatably mounted, an elastic member that biases the inner frame in a direction that moves downward with a force smaller than the force that can support the weight of the door, and a door removal prohibition position and a door removal permission position. And a switching member attached to the outer frame so as to be held at each position, and when the switching member is in the door removal prohibition position, the inner frame is allowed to move up and down, When it is in the door removal allowable position, it is prohibited to move downward while holding the inner frame at a predetermined upper door removable position, and when the inner frame is in the upper movement limit position, The part on the wheel rail is located directly above the outer and inner rails. It is located below, and the inner frame is formed with a convex part that engages with the convex part of the rail when the inner frame moves upward relative to the rail from the state where the wheel is on the rail. It is a feature.
[0008]
In this specification, the left and right refer to the state of the door viewed from the inside of the building, with the inside of the building being the front and the outside being the back.
[0009]
The movement of the inner frame in the vertical direction includes vertical movement, oblique vertical movement, and vertical movement. When the inner frame swings with respect to the outer frame, it preferably swings about an axis in the front-rear direction.
[0010]
Usually, at least most of the door pulley is fitted in a space under the door having a substantially inverted U-shaped cross section. Then, the wheel part that is always below the lower stake, the part located directly above the rails of the outer frame and the inner frame is placed on the lower rail of the window frame, and the lower rail is placed in the groove of the wheel part. Is fitted.
[0011]
When the door to which the door wheel is attached is attached to the window frame, the switching member is held at the door removal allowable position, and the inner frame to which the wheel is attached is held at the door removal possible position. In such a state, the upper part of the door is fitted to the upper rail of the window frame, and the door is lifted and lowered to fit the lower rail of the window frame to the groove of the wheel so that the door can be attached to the window frame. . At this time, since the part of the wheel that is on the rail is located below the part of the outer frame and the inner frame that is directly above the rail, only the wheel is on the lower rail, and the outer and inner frames are the lower part. Do not ride on rails. Further, the convex part of the inner frame passes through the part of the convex part of the rail and is positioned below this.
[0012]
If the door is attached to the window frame, the switching member is switched to the door removal prohibition position. Thereby, an inner frame will be in the state which can move up and down. At this time, the inner frame is biased in the direction of moving downward by the elastic member, but the strength of the elastic member is smaller than the force capable of supporting the weight of the door, so the inner frame is moved upward by the weight of the door. Stop at the moving limit position. The door is now in use, and the wheels roll on the rails by moving the door to the left and right. At this time, since the outer frame and the inner frame are not on the rail, normal traveling is possible.
[0013]
In the above state, even if the door is to be removed and lifted, the inner frame moves downward by the urging force of the elastic member, the lower rail remains in the groove of the wheel, and the wheel The door cannot be removed because it cannot be removed. That is, the function of preventing the door from coming off is exhibited. In this case, even if the door is suddenly lifted with a force larger than the urging force of the elastic member, the convex portion formed on the inner frame engages with the convex portion of the rail, thereby preventing the wheel from coming off the rail. Therefore, it is possible to reliably exert the function of preventing the detachment. When the inner frame has no convex portion, the wheel may come off the rail when the door is suddenly lifted with a force larger than the biasing force of the elastic member.
[0014]
When the door is removed from the window frame, the switching member is switched to the door removal allowable position and held in that position. Thereby, since the inner frame to which the wheel is attached is held at the door removable position, it can be removed from the window frame by lifting the door.
[0015]
According to the door truck of claim 1, as described above, the door is detached by attaching the door to the window frame while holding the switching member at the door removal allowable position and switching the switching member to the door removal prohibited position. It can be stopped. For this reason, it is not necessary to adjust the position of the stopper member at a high place as in the prior art, and the adjustment when the door is attached becomes extremely simple. In addition, even in the state where the inner frame is held at the door detachable position, the part that rides on the rail of the wheel is located below the part that is located directly above the rail of the outer frame and the inner frame, When the door is attached to the window frame, only the wheel rides on the lower rail, and the strength of the elastic member is smaller than the force that can support the weight of the door, so only the switching member is switched to the door removal prohibited position Thus, the door can be put into use, and therefore, no troublesome adjustment is required when the door is installed. Furthermore, the detachment preventing function can be surely exhibited by the convex portions formed on the inner frame.
[0016]
The upper limit of the inner frame with respect to the outer frame is determined by adjusting a predetermined part on the inner frame side to a predetermined part on the outer frame side, for example, a part provided integrally with the outer frame or an adjustment screw attached to the outer frame. This is the position where the member abuts.
[0017]
Preferably, convex portions are formed on both front and rear sides of the upper end portion of the rail, and at least one front and rear convex portions that respectively engage with the front and rear convex portions of the rail are formed on the inner frame. In this case, the positions in the left-right direction of the convex portions before and after the inner frame may be the same or different.
[0018]
According to a second aspect of the present invention, in the first aspect of the present invention, the outer frame is provided with an adjustment screw for adjusting the upper movement limit position of the inner frame.
[0019]
According to the door of claim 2, the height of the door can be adjusted when the door is used by adjusting the upper moving limit position of the inner frame with the adjusting screw. In this case as well, the switching member for preventing slipping can be switched to the door removal prohibition position and the height of the door wheel can be adjusted at one position at the lower part of the door, and adjustment work at a high place is unnecessary. Therefore, adjustment when the door is attached is very simple. The height adjustment of the door roller using the adjusting screw only needs to be performed once when the door is first attached. Thereafter, the door is attached and the switching member is switched to the door removal prohibited position. Can be used.
[0020]
According to a third aspect of the present invention, the inner frame is attached to the outer frame so that the inner frame can linearly move in an oblique vertical direction, and the adjustment screw is attached to the outer frame diagonally. The upper movement limit position of the inner frame is adjusted by abutting the frame obliquely from above.
[0021]
According to the door wheel of claim 3, the adjustment screw is attached to the outer frame obliquely and comes into contact with the inner frame obliquely from the upper side. It is possible to adjust the upper movement limit position with the adjustment screw, and by adjusting the adjustment screw diagonally, the adjustment screw is operated from the outside of the left end or the right end of the door to which the door pulley is attached, and the inner frame It is possible to adjust the upper movement limit position.
[0022]
The switching member is attached to the outer frame so that the position is switched by moving in the left-right direction, which is the moving direction of the door, for example.
[0023]
The door cart of claim 4 is the one according to any one of claims 1 to 3, wherein the switching member is attached to the outer frame so as to be movable in the moving direction of the door wheel, and the amount of protrusion from the outer frame to the outside is small. It is characterized in that it can be switched to a door removal allowable position having the same amount of protrusion as the small door removal prohibition position.
[0024]
In the outer frame, the switching member held at the door removal allowance position protrudes outward from the left or right edge of the door, and the switching member switched to the door removal prohibition position retreats into the left or right vertical corner of the door To be fixed to the door.
[0025]
According to the door pulley of claim 4, after the door is attached to the window frame in a state where the switching member is held at the door removal allowable position, the door is moved to the left end or the right end of the window frame and protrudes outward from the outer frame. By causing the switching member to collide with the vertical frame of the window frame, the switching member can be switched to the door removal prohibiting position to prevent detachment, and adjustment when the door is attached is further facilitated.
[0026]
According to a fifth aspect of the present invention, in the door wheel of any one of the first to fourth aspects, a switching hole is formed in the switching member, and a switching convex portion inserted through the switching hole is fixed in the inner frame. The vertical movement that allows the vertical movement of the switching projection to match the switching projection of the inner frame when the switching member is switched to the door removal prohibition position. A door-removable position holding portion that engages with a switching convex portion of the inner frame and holds the inner frame in the door-removable position when the switching member is switched to the door removal-permitted position; It is formed diagonally between the vertical movement allowance part and the door detachable position holding part, and the switching member of the inner frame moves upward to the door detachable position holding part by moving the switching member to the door removal allowable position side. And a switching unit that is moved to the position.
[0027]
According to the doorwheel of claim 5, by simply switching the switching member to the door removal prohibition position, the inner frame switching convex portion is matched with the vertical movement allowing portion of the switching member switching hole, and the inner frame is moved up and down. It can be moved in the direction and the anti-separation function can be exerted, and the switching member of the inner frame can be removed from the switching hole of the switching member by simply switching the switching member to the door removal allowable position. The door can be removed by engaging the possible position holding portion and holding the inner frame at the door removable position.
[0028]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the switching member can be switched to the door removal prohibition position, the first door removal permission position, and the second door removal permission position and held at each of the above positions. The switching frame is engaged with the switching projection of the inner frame when the switching member is switched to the first door removal allowable position in the switching hole of the switching member. A first door detachable position holding portion that is held at one door detachable position, and an inner frame that engages with a switching convex portion of the inner frame when the switching member is switched to the second door removal allowable position. And a second door detachable position holding portion that holds the second door detachable position below the first door detachable position. And a switching portion is provided between the second door removable position holding portion and the first door removable position holding portion. It is an.
[0029]
For example, the first door detachable position is the same position as the uppermost upper movement limit position of the inner frame or a position slightly below it. The uppermost upper movement limit position of the inner frame is, for example, the upper movement limit position in a state where it is not regulated by an adjustment member such as an adjustment screw. The second door detachable position is the same as or slightly below the upper movement limit position at the lowermost position of the inner frame. The lowermost upper movement limit position of the inner frame is, for example, an upper movement limit position that is regulated downward by an adjustment member such as an adjustment screw. When the door is first attached to the window frame, the switching member is switched to the first door removal allowable position, and the inner frame is held at the first door removal possible position. After being attached, the upper limit position of the inner frame is adjusted by the adjustment member, and the height of the door roller is adjusted. Even if the upper movement limit position of the inner frame is adjusted to the lowermost upper movement limit position or in the vicinity thereof, the switching member is switched to the second door removal allowable position as it is, so that the inner frame becomes the second position. The door can be removed by being held at the door removable position.
[0030]
According to the door cart of claim 6, after the door is attached to the window frame and the height of the door wheel is adjusted, the switching member can be switched to the second door removal allowable position and the door can be removed in the state as it is. Can be in a state.
[0031]
For example, the wheel has a flange portion formed only at one end of a short columnar portion whose outer peripheral surface is a raceway surface rolling on the rail, and the short columnar portion is on the wheel support portion side of the inner frame. Is attached to the wheel support part, and an arc-shaped part corresponding to the flange part of the wheel is formed at the lower part of the wheel support part, and a groove is formed between the arc-shaped part and the wheel flange part. ing.
[0032]
In this way, since the wheel is formed with the flange portion only at one end of the short cylindrical portion, the first mold having a recess corresponding to the shape of the wheel and the second mold for closing the recess. Wheels can be manufactured by combining with molds. Therefore, there is no burr on the raceway surface of the wheel, and the wheel rolls smoothly on the rail. Furthermore, since one wheel can be manufactured with one recess, a large number of recesses can be provided in one mold, and a large number of wheels can be manufactured at one time.
[0033]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description, the left and right sides of FIGS. 2 to 4 are the left and right sides, and the front side of the drawing is the front and the back side of the drawing is the back.
[0034]
A door car is attached to the left and right ends of the lower part of a relatively light door such as a screen door and placed on a rail, but the left door wheel and the right door wheel are symmetrical, so The door cart will be described.
[0035]
The door wheel (1) is composed of a synthetic resin outer frame (3) fixed to the door (2), a synthetic resin inner frame (4) attached to the outer frame (3) so as to be movable up and down, and an inner frame ( Synthetic resin wheel (5) rotatably attached to 4) and a compression coil spring (6) which is an elastic member that urges the inner frame (4) to move downward relative to the outer frame (3). ), A metal slider (7) which is a switching member attached to the outer frame (3) so as to be position-switchable, and an adjustment screw (8) attached to the outer frame (3).
[0036]
The lower sill (2a) of the door (2) has a substantially inverted U-shaped cross section. The left and right ends of the lower sill (2a) are open, and the door cart (1) is attached to this part. The horizontal cross section of the right vertical stile (2b) of the door (2) is substantially U-shaped with the right side opened.
[0037]
The outer frame (3) has a substantially inverted L shape when viewed from the front. The outer frame (3) is integrally formed with an upper wall (3a) extending horizontally in the left-right direction, a front wall (3b) and a rear wall (3c) extending vertically downward from both front and rear edges of the upper wall (3a). The vertical right wall (3d) extending above the upper wall (3a) on the right end of the upper wall (3a) and the front wall (3b) and the front surface of the rear wall (3c) extending to the right side of these. ) Is integrated at the bottom. The lower edges of the front and rear walls (3b) (3c) are at the same height and are located slightly below the lower edge of the right wall (3d). The rear lower edge of the right wall (3d) is located slightly above the lower edge of the front and rear walls (3b) (3c), and the front lower edge of the right wall (3d) is located slightly above the rear lower edge. . The rear part of the right wall (3d) in contact with the front surface of the rear wall (3c) is removed from its lower edge, and a slider guiding slit (between the front surface of the rear wall (3c) and the rear surface of the right wall (3d) ( 9) is formed. The right wall (3d) constitutes a vertical door mounting portion. The upper wall (3a) and the front and rear walls (3b) (3c) constitute the inner frame support part, and between the upper wall (3a), the lower right wall (3d) and the front and rear walls (3b) (3c). In addition, an inner frame housing space (10) having a left end and a lower end opened continuously is formed.
[0038]
A mounting screw insertion hole (11) penetrating in the left-right direction is formed in a portion near the upper end of the right wall (3d) extending upward from the upper wall (3a). From the upper surface of the upper wall (3a) to a portion slightly lower than that, the right side and front side portion of the right wall (3d) is removed to form a recess (12), and the bottom portion of the recess (12) is formed. An adjustment screw screw hole (13) penetrating this portion in the diagonally left-right direction is formed. The right side of the screw hole (13) is high, and in this example, it is inclined 20 degrees with respect to the horizontal. The adjusting screw (8) is screwed into the screw hole (13) from the right side. The tip (left end) of the adjustment screw (8) protrudes into the space (10), and the screw head (8a) enters the recess (12).
[0039]
An arc-shaped recess (14) is formed at the left end of the front and rear walls (3b) and (3c), and the upper part of the upper wall (3a) and the front and rear walls (3b) and (3c) are lower than the lower parts of the front and rear walls (3b) and (3c). Projects to the left. A rectangular opening (15) is formed in the upper wall (3a) projecting to the left so as to vertically penetrate this portion. Inner frame guide protrusions (16) and (17) extending in a slanting vertical direction are integrally formed on the rear surface of the front wall (3b) and the front surface of the rear wall (3c) immediately to the right of the opening (15). An inner frame guiding slot (18) extending in parallel along the portion excluding the upper portion of the ridge (16) is formed in the front wall (3b) on the right side of the ridge (16). On the lower edge of the front wall (3b) immediately on the right side of the long hole (18), a trapezoidal notch (19) with a small left and right width is formed. In the part immediately to the right of the upper end of the notch (19), the space between the front and rear walls (3b) and (3c) is between the holes (20) and (21) formed in the front and rear walls (3b) and (3c). A guide pin (22) extending in the front-rear direction is fixed. A lower spring receiving portion (23) whose bottom surface is perpendicular to the direction of the elongated hole (18) is integrally formed on the inner surface of the upper wall (3a) above the notch (19), and the elongated hole (18 ) And a short spring holding projection (24) that extends obliquely downward in parallel with each other. A trapezoidal opening (25) with a small width on the lower side is formed in the front wall (3b) in front of the protrusion (24). A vertical plate-shaped guide (26) that is long in the left-right direction is small between the front wall (3a) and the front wall (3c) and the rear wall (3c). It is integrally formed with a gap. The guide part (26) has a trapezoidal shape with a small width on the lower side. A slider guide elongated hole (27) extending in the left-right direction is formed in the lower portion of the rear wall (3c) near the right wall (3d). In the part of the rear wall (3c) just below the long hole (27), hold the slider (7) in the position corresponding to the right and middle parts of the long hole (27) in the first door removal allowable position. And a square hole (28b) for holding the slider (7) at the second door removal allowable position are formed, and the slider is located at a position corresponding to the left portion of the long hole (27). A square hole (29) for holding (7) in the door removal prohibition position is formed. Hereinafter, the square hole (28a) is referred to as a first holding hole, the square hole (28b) is referred to as a second holding hole, and the square hole (29) is referred to as a third holding hole. The ridges (16), (17) and the long holes (18) are slightly inclined to the right with respect to the vertical line. In this example, the inclination angle is 20 degrees.
[0040]
The inner frame (4) includes a thick plate-like portion (30) and a wheel mounting portion (31) integrally formed on the left side thereof. The plate-like portion (30) includes a left portion (30a), a central portion (30b), and a right portion (30c). At the left end of the left part (30a) of the plate-like part, a partially cylindrical projecting part (32) corresponding to the arc-shaped recess (14) of the outer frame (3) is integrally formed. The front part and the rear part of the projecting part (32) project slightly forward and backward from the plate-like part (30). The upper surfaces of the central portion (30b) and the right portion (30c) of the plate-like portion (30) are at the same height and are positioned below the upper surface of the left portion (30a). The lower surface of the left portion (30a) and the central portion (30b) of the plate-like portion (30) are at the same height and are located below the lower surface of the right portion (30c). The wheel mounting portion (31) is integrally formed on the lower side and the left side of the overhang portion (32). The front and rear thickness of the wheel mounting portion (31) is thinner than that of the plate-shaped portion (30), and the rear surface of the wheel mounting portion (31) is located behind the rear surface of the plate-shaped portion (30), and the wheel mounting portion (31 ) Is located behind the front surface of the plate-like portion (30). The lower edge of the wheel mounting part (31) is located below the lower surface of the left part (30a) of the plate-like part, and the lower right part of the wheel mounting part (31) is the lower part of the left part (30a) of the plate-like part. It extends to the lower part of the part near the left end.
[0041]
On the upper surface of the left end portion of the overhang portion (32), a square-shaped convex portion (33) protruding slightly upward is integrally formed. In addition, the upper end of the left part of the plate-like part located above the right part of the overhang part (32) is a square-shaped convex part (34) protruding slightly above the upper surface of the central part (30b). Yes. Corresponding to the ridges (16) (17) of the outer frame (3) on the front and rear sides of the boundary between the left part (30a) and the central part (30b) of the plate-like part (30) at the same angle as these Guide grooves (35) and (36) extending in the vertical direction are formed. A spring accommodating groove (37) that extends from the upper surface to the lower part is formed at the central part in the left-right direction of the front surface of the plate-like part (30b), and a spring holding protrusion (38) is integrally formed on the lower end wall of the groove (37). Is formed. The groove (37) extends obliquely in the vertical direction in parallel with the guide grooves (35) and (36). A guide pin portion (39) protruding slightly forward is integrally formed on the front upper portion of the central portion (30b) on the left side of the groove (37). A long guide hole (40) is formed in the central part (30b) on the right side of the groove (37), penetrating back and forth in this direction and extending obliquely in the vertical direction parallel to the guide grooves (35) (36). Has been. An engaging portion (41) is integrally formed at the lower front edge portion of the central portion (30b) of the plate-like portion. The engagement portion (41) has a trapezoidal shape with a small width on the upper side when viewed from the front, protrudes forward from the central portion (30b), and extends downward from the lower edge of the central portion (30b). An engaging convex portion (42) protruding slightly rearward is formed integrally with the lower end portion of the rear surface of the joining portion (41). The upper part of the right end surface of the right part (30c) of the plate-like part is an adjustment screw contact surface (43) that is inclined so as to be perpendicular to the screw hole (13) of the outer frame (3). A switching convex portion (44) protruding rearward is integrally formed on the upper portion of the plate portion right portion (30c) near the left end of the rear surface. A concave portion (45) for avoiding interference with the guide portion (26) of the outer frame (3) at the rear upper end portion of the right portion (30c) of the plate-like portion between the convex portion (44) and the contact surface (43) Is formed.
[0042]
The lower left end portion of the wheel support portion (31) has an arc shape, and the position of the lower edge thereof becomes higher toward the left side. An annular recess (46) is formed on the front surface of the wheel support portion (31), and a short cylindrical axle support portion (47) protruding slightly forward is formed at the center of the bottom surface of the recess (46). . An axle hole (48) penetrating this part back and forth is formed at the center of the axle support part (47), and the wheel (5) is formed by the axle (49) fixed to the hole (48) part. Is supported rotatably. A small-diameter portion (49a) is formed at the rear portion of the axle (49), and a flange portion (49b) is formed at the front end. The small diameter part (49a) of the axle (49) is inserted into the hole (48) of the axle support part (47) from the front side, and the rear end part of the small diameter part (49a) coming out after the hole (48) is enlarged. As a result, the axle (49) is fixed to the axle support (47), and the wheel (5) is attached between the axle support (47) and the flange (49b) of the axle (49).
[0043]
The wheel (5) is composed of a short cylindrical part (5a) whose outer peripheral surface is a rolling surface and a flange part (5b) integrally formed at the front end thereof, and the axle is inserted into the center of the wheel (5). A hole (50) is formed. A groove (52) is formed between the substantially arc-shaped protrusion (51) below the recess (46) of the axle support (31) and the flange (5b) of the wheel (5). . The lowermost part of the short cylindrical part (5a) of the wheel (5) is located slightly below the lower surfaces of the left part (30a) and the central part (30b) of the plate-like part.
[0044]
An engaging convex portion (53) protruding slightly forward is formed integrally with the lower front edge portion of the wheel mounting portion (31) extending below the left portion (30a) of the plate-like portion. This convex part (53) is located at the same height as the convex part (42) formed in the engaging part (41).
[0045]
The slider (7) has a plate shape that is long in the left-right direction as a whole and has a thin front and rear thickness. The slider (7) includes a left portion (7a), a central portion (7b), and a right portion (7c), and a synthetic resin knob (54) is fixed to the right end portion of the right portion (7c). The height of the central part (7b) of the slider (7) is the highest, and the upper edges of the left part (7a) and the central part (7b) are the same height and are positioned above the upper edge of the right part (7c). The lower edges of the central portion (7b) and the right portion (7c) are at the same height and are located below the lower edge of the left portion (7a). At the boundary between the central part (7b) and the right part (7c) of the slider (7), a holding projection (55) that slightly protrudes rearward is formed at a portion near the lower edge, and a little rearward on the upper side. A protruding guide projection (56) is formed.
[0046]
A switching hole (57) is formed mainly in the central portion (7b) of the slider (7). The switching hole (57) has a substantially trapezoidal shape with a small lateral width on the lower side, the upper side is horizontal and long, and the lower side is horizontal and short. The upper part of the right side of the switching hole (57) is vertical, and the remaining lower part is inclined to the left as it goes down. The left side of the switching hole (57) is inclined to the right as it goes down as a whole, and a horizontal step is formed at the upper and lower portions in the middle. The upper step portion holds the inner frame (4) in the first door removable position by holding the switching projection (44) of the inner frame (4) in the first door removable position. In the first door detachable position holding portion (57a), the lower step is formed by holding the switching projection (44) of the inner frame (4) at the second door detachable position. A second door removable position holding portion (57b) for holding 4) at the second door removable position. The upper part of the lower side of the switching hole (57) and the portion on the right side thereof allow the vertical movement of the switching convex part (44) of the inner frame (4) to move the inner frame (4) up and down. A permissible vertical movement allowing portion (57c) is provided. In addition, the inclined portion between the first holding portion (57a) and the second holding portion (57b) causes the switching convex portion (44) of the inner frame (4) to be first from the vertical movement allowing portion (57c) side. In the first switching part (57d) for moving the inner frame (4) to the first removable position by moving to the holding part (57a), the second holding part (57b) and the vertical movement allowing part ( 57c), the inclined portion between the inner frame (4) moves the switching convex portion (44) of the inner frame (4) from the vertical movement allowing portion (57c) side to the second holding portion (57b). Is a second switching portion (57e) for moving the door to the second removable position.
[0047]
The right side of the inner frame (4) excluding the overhanging part (32), the convex part (33) and the wheel mounting part (31) on the left side of these is fitted into the space (10) of the outer frame (3). ing. The front surface of the plate-like portion (30) of the inner frame (4) contacts the rear surface of the outer frame front wall (3b), and between the rear surface of the plate-like portion (30) and the front surface of the outer frame rear wall (3c). As will be described later, an interval for inserting the slider (7) is formed. And the ridges (16) (17) of the outer frame (3) are the guide grooves (35) (36) of the inner frame (4), and the pin portions (39) of the inner frame (4) are the outer frame (3). The guide pin (22) on the outer frame (3) side is fitted into the long hole (40) of the inner frame (4), and the inner frame (4) is It can move linearly in the diagonally up and down direction with respect to the frame (3). In addition, the spring (6) is fitted in the spring accommodating groove (37) of the inner frame (4), and the upper and lower ends thereof are held by the protrusions (24) and (38), respectively. The frame (4) is biased downward with respect to the outer frame (3). The biasing force of the spring (6) is smaller than the force capable of supporting the weight of the door (2). When the adjustment screw (8) is not actuated, the inner frame (4) has a position between the uppermost position and the lowermost position where the predetermined portion on the inner frame (4) side contacts the predetermined portion on the outer frame (3) side. Move between. In this state, the uppermost position becomes the upper movement limit position. When the adjustment screw (8) is operated, the inner frame (4) cannot move upward from the position where the contact surface (43) abuts the adjustment screw (8), and this becomes the upper movement limit position. In this example, the distance between the uppermost position and the lowermost position of the inner frame (4), that is, the maximum stroke is about 10 mm. The adjustment amount of the upward movement limit position by the adjustment screw (8) is, for example, about half of the maximum stroke, and is about 4 mm in this example. In a state where the inner frame (4) is in the uppermost position, the convex portion (34) of the inner frame (4) is in the opening (15) of the outer frame (3) and the engaging portion (41) of the inner frame (4). Fits into the notch (19) of the outer frame (3), and the overhanging portion (32) of the inner frame (4) approaches the recess (14) of the outer frame (3). Further, the lower edge of the inner frame (4) is substantially at the same height as the lower edge of the outer frame (3).
[0048]
The slider (7) is inserted between the rear surface of the plate-like portion (30) of the inner frame (4) and the front surface of the outer frame rear wall (3c) in the space (10) of the outer frame (3). The upper part of the left part (7a) and the central part (7b) fits into the space between the outer frame rear wall (3c) and the guide part (26), and the right part (7c) It fits into the slit (9). Also, the protrusion (56) of the slider (7) fits into the elongated hole (27) of the outer frame (3), and the upper edges of the left part (7a) and center part (7b) of the slider (7) are the upper wall of the outer frame. The slider (7) is in contact with the lower surface of (3a), and the slider (7) can move in the left-right direction with respect to the outer frame (3) using these as guides. The protrusion (55) of the slider (7) is made to correspond to the holding holes (28a) (28b) (29) of the outer frame (3), and the protrusion (55) is connected to these holding holes (28a) (28b) ( 29), the slider (7) is held in three positions. The convex part (44) of the inner frame (4) is fitted in the switching hole (57) of the slider (7), and the position and state of the inner frame (4) are changed by changing the position of the slider (7). Can be changed.
[0049]
The part of the outer frame (3) of the door pulley (1) except the right wall (3d) is inserted into the right edge of the lower sill (2a) of the door (2), and the upper part of the right wall (3d) is sunk (2a ). Then, the door wheel (1) is inserted into the hole (11) of the right wall (3d) and screwed into the cutout cylindrical part (58) of the lower stake (2a), thereby causing the door roller (1) to move to the door (2). Fixed to. The right part including the right wall (3d) of the outer frame (3) and the knob (54) of the slider (7) is located in the space of the vertical stile (2b). Further, the lower edge of the outer frame (3) is substantially at the same height as the lower edge of the lower sill (2a).
[0050]
Similarly, the left door cart is attached to the left end of the door (2). Then, the door (2) to which the left and right door cars (1) are attached is attached to the window frame, and the wheel (5) portion of the door wheel (1) is placed on the lower rail (60) as will be described later. It is done. The lowermost part of the short cylindrical part (5a) of the wheel (5) on the rail (60) is the other part of the door wheel (1) regardless of the position of the inner frame (4) in the maximum movement range. The part is located below the part located directly above the rail (60). In addition, a convex portion (60a) protruding in both the front and rear directions is formed at the upper end portion of the rail (60). The front-rear width of the rail (60) at the convex portion (60a) is slightly larger than the mutual interval between the front and rear convex portions (42), (53) of the inner frame (4).
[0051]
2, 6 and 7 show a state in which the slider (7) is at the rightmost first door removal allowable position. In a state where the slider (7) is in the first door removal allowable position, the convex portion (55) of the slider (7) is fitted in the first holding hole (28a) of the outer frame (3), and the slider (7) is Most of the right side of the knob (54) of the slider (7) protrudes to the right from the vertical sill (2b) of the door (2). Further, since the slider (7) is positioned on the rightmost side, the convex portion (44) of the inner frame (4) is positioned on the leftmost side of the switching hole (57) of the slider (7), so that the first The inner frame (4) is held at the first door detachable position, and the downward movement is prohibited from being engaged with the door detachable position holding portion (57a). The first door removable position of the inner frame (4) is the same as or slightly below the uppermost position of the maximum movement range.
[0052]
FIG. 4 shows a state in which the slider (7) is at an intermediate second door removal allowable position. In the state where the slider (7) is in the second door removal allowable position, the protrusion (55) of the slider (7) is fitted in the second holding hole (28b) of the outer frame (3), and the slider (7) is It is held in that position, and a part of the right side of the knob (54) of the slider (7) protrudes to the right side from the vertical sill (2b) of the door (2). Further, since the slider (7) is positioned in the middle in the left-right direction, the convex portion (44) of the inner frame (4) is positioned in the middle in the left-right direction of the switching hole (57) of the slider (7). Is engaged with the second door removable position holding portion (57b), so that the inner frame (4) is held at the second door removable position and prohibited to move downward. Has been. The second door removable position of the inner frame (4) is the same as or slightly lower than the lowermost upper movement limit position of the inner frame (4) that can be adjusted by the adjusting screw (8).
[0053]
3 and 8 show a state in which the slider (7) is in the leftmost door removal prohibition position. When the slider (7) is in the door removal prohibition position, the protrusion (55) of the slider (7) is fitted in the third holding hole (29) of the outer frame (3), and the slider (7) is moved to that position. Most of the knob (54) of the slider (7) is retracted into the vertical sill (2b) of the door (2). Further, since the slider (7) is located on the leftmost side, the convex portion (44) of the inner frame (4) is allowed to move vertically (57c) on the right side of the switching hole (57) of the slider (7). The inner frame (4) can move up and down the maximum movement range. If there is nothing to prevent the inner frame (4) from moving downward, such as when the door wheel (1) is not attached to the window frame, the inner frame (4) Move to the lowest position of the maximum movement range.
[0054]
When a leftward force is applied to the slider (7) at the first door removal allowable position in a state where the adjustment screw (8) is not actuated, the first holding portion is caused by the elastic deformation of the convex portion (55). The slider (7) moves out of the hole (28a), moves to the left side, and the convex portion (55) returns by elastic force to fit into the second holding hole (28b). Stop at the position where two units can be removed. Then, the slider (7) moves from the first door removal allowable position to the second door removal allowable position, so that the convex portion (44) of the inner frame (4) becomes the switching hole (57 of the slider (7)). ) Is moved from the first door removable position holding portion (57a) and moved downward by the biasing force of the spring (6), and is engaged with the second door removable position holding portion (57b). Thereby, an inner frame (4) is hold | maintained in a 2nd door detachable position. When a further leftward force is applied to the slider (7) at the second door removal allowance position, the slider (7) moves to the left side as described above, and the convex portion (55) becomes the third holding hole (29 ) And the slider (7) stops at the door removal prohibited position. Then, the slider (7) moves from the second door removal allowable position to the door removal prohibited position, so that the convex portion (44) of the inner frame (4) is moved into the switching hole (57) of the slider (7). The inner frame (4) moves to the lowermost position by the urging force of the spring (6) when it comes off the second door detachable position holding part (57b) and coincides with the vertical movement allowance part (57c). Conversely, when a rightward force is applied to the slider (7) in the door removal prohibition position, the slider (7) moves to the right as described above, and the convex portion (55) becomes the second holding hole (28b). ) And the slider (7) stops at the second door removal allowable position. When the slider (7) moves from the door removal prohibition position to the second door removal permission position, the second switching portion (57e) of the switching hole (57) resists the biasing force of the spring (6). Thus, the convex portion (44) of the inner frame (4) is pushed up, and thereby the inner frame (4) is moved upward. Then, when the slider (7) stops at the second door removal allowable position, the convex portion (44) engages with the second door removable position holding portion (57b) of the switching hole (57). The inner frame (4) is held at the second door removable position. When a further rightward force is applied to the slider (7) at the second door removal allowable position, the slider (7) moves to the right as described above, and the convex portion (55) becomes the first holding hole (28a). ) And the slider (7) stops at the first door removal allowable position. As the slider (7) moves from the second door removal allowable position to the first door removal allowable position, the inner frame (4) is moved by the first switching portion (57d) of the switching hole (57) as described above. When the slider (7) is moved upward and stops at the first door removal allowable position, the convex portion (44) is moved to the first door removable position holding portion (57a) of the switching hole (57). The inner frame (4) is held in the first door removable position by engaging.
[0055]
When the upper limit position of the inner frame (4) is regulated by the adjustment screw (8), the inner frame (4) can only be moved up to the upper movement limit position regulated by the adjustment screw (8). I can't move. Therefore, when the upper movement limit position regulated by the adjustment screw (8) is below the first door removable position, the inner frame (4) cannot move to the first door removable position, and the slider ( The position of 7) is switched between the door removal prohibition position and the second door removal permission position, thereby switching the position and state of the inner frame (4) in the same manner as described above.
[0056]
Before the door (2) with the door wheel (1) attached as described above is first attached to the window frame, the slider (7) is moved to the first position without using the adjusting screw (8) as shown in FIG. The inner frame (4) is held at the first door removable position while being held at the door removal allowable position. In this state, fit the upper rail of the window frame to the upper part of the door (2) (not shown), and lift and lower the door (2), so that the lower part of the window frame is in the groove (52) part of the wheel (5). The rail (60) is fitted, the short cylindrical portion (5a) of the wheel (5) is placed on the rail (60), and the door (2) is attached to the window frame. At this time, the inner frame (4) is urged downward by the spring (6), but the urging force of the spring (6) is smaller than the force capable of supporting the weight of the door (2), so the inner frame (4) Stops at the upper limit of movement. The front-rear spacing of the front and rear projections (42) (53) of the inner frame (4) is slightly smaller than the front-rear width of the projection (60a) of the rail (60), but it depends on the weight of the door (2). , The front-rear spacing of the convex portions (42) (53) is widened, and the convex portions (42) (53) pass through the convex portion (60a) of the rail (60) and face the lower portion from the front and rear. To do. Further, since the lowermost portion of the short cylindrical portion (5a) of the wheel (5) is located below the portion located directly above the rail (60) in the other portion of the door wheel (1), the wheel (5 ) Only rides on the rail (60). In this state, since the inner frame (4) is still held at the first door removal allowable position, the wheel (5) and the inner frame (4) are moved to the rail (60) by lifting the door (2). The door (2) can be removed from the window frame.
[0057]
When the door (2) is attached to the window frame as described above, the door (2) is moved to the right end of the window frame, and the slider (7) is made to collide with the right vertical frame of the window frame. As a result, the slider (7) moves to the leftmost door removal prohibition position with respect to the outer frame (3), and the convex portion (44) of the inner frame (4) moves to the switching hole (57) of the slider (7). ), The inner frame (4) can move downward relative to the outer frame (3), but the strength of the spring (6) is the door (2). Therefore, the inner frame (4) remains stopped at the upper movement limit position. In this state, as shown in FIG. 3, the height of the door wheel (1) is adjusted by adjusting the upper rotation limit position of the inner frame (4) with the adjustment screw (8). Make the adjustment of (2). The door (2) is now in use. At this time, since only the wheel (5) is on the rail (60), normal traveling is possible. Instead of moving the door (2) to the right and causing the slider (7) to collide with the vertical frame, the slider (7) may be moved by hand to the door removal prohibition position.
[0058]
Even when the slider (7) is held in the door removal prohibition position as described above and the door (2) is lifted upward to remove it, the inner frame (4) is moved downward by the biasing force of the spring (6). The door (2) cannot be removed because the wheel (5) and the inner frame (4) do not come off the rail (60) by moving. In this case, even if the door (2) is suddenly lifted with a force larger than the biasing force of the spring (6), the front and rear projections (42) and (53) of the inner frame (4) By engaging with (60a), it is possible to prevent the inner frame (4) and the wheel (5) from coming off from the rail (60), and to surely exert the function of preventing the coming off. When the inner frame (4) does not have a convex part (42) (53), when the door (2) is suddenly lifted with a force larger than the urging force of the spring (6), the inner frame (4) and the wheel ( 5) may come off the rail (60).
[0059]
When removing the door (2), the slider (7) is moved by hand to the second door removal allowable position or the first door removal allowable position, and held at that position. Accordingly, the inner frame (4) is held at the second door removable position or the first door removable position, and can be removed from the window frame by lifting the door (2). As shown in FIG. 3, when the upper movement limit position restricted by the adjusting screw (8) is below the first door removal allowable position, the slider (7) is moved to the second door as shown in FIG. Switch to the detachable position and remove the door (2) from the window frame.
[0060]
The door (2) removed from the window frame in the state shown in FIG. 4 can be reattached to the window frame in the same manner as described above, and in this case, the height adjustment with the adjusting screw (8) is unnecessary. is there.
[0061]
Thus, the height adjustment of the door pulley (1) with the adjusting screw (8) only needs to be performed once when the door (2) is first attached. Thereafter, the door (2) is attached to the slider. By simply switching (7) to the door removal prohibited position, the door (2) can be put into use.
[0062]
The configuration of the door cart of the present invention is not limited to that of the above embodiment, and can be changed as appropriate.
[0063]
For example, in the above-described embodiment, the inner frame (4) can be linearly moved obliquely in the vertical direction, but the inner frame may be linearly moved in the vertical direction, It may be one that swings in the vertical direction around the center.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a door cart showing an embodiment of the present invention.
FIG. 2 is a vertical sectional view as seen from the front side of the door roller.
FIG. 3 is a drawing corresponding to FIG. 2 and showing a state different from FIG. 2;
FIG. 4 is a schematic drawing showing a different state from FIG. 3;
FIG. 5 is a cross-sectional view taken along the line VV in FIG. 2;
6 is an enlarged cross-sectional view taken along the line VI-VI in FIG. 2;
7 is an enlarged cross-sectional view taken along line VII-VII in FIG.
FIG. 8 is an enlarged cross-sectional view taken along line VIII-VIII in FIG.
[Explanation of symbols]
(1) Door-to-door
(2) Door
(2a) Lower town
(2b) Vertical town
(3) Outer frame
(4) Inner frame
(5) Wheel
(6) Spring
(7) Slider
(8) Adjustment screw
(44) Switching convex
(57) Switching hole
(57a) First door removable position holding part
(57b) Second door removable position holding part
(57c) Vertical movement allowance
(57d) 1st switching part
(57e) Second switching part
(60) Rail

Claims (6)

A trolley that is attached to the lower part of the door and moves on rails,
The outer frame fixed to the door, the inner frame attached to the outer frame so as to be movable up and down, the wheel rotatably attached to the inner frame, and the inner frame with a force smaller than the force capable of supporting the weight of the door. An elastic member that urges in a direction to move downward, and a switching member that is switched to a door removal prohibition position and a door removal permission position and attached to the outer frame so as to be held at each of the above positions. When the switching member is in the door removal prohibition position, the inner frame is allowed to move up and down, and when it is in the door removal permission position, the inner frame is held at a predetermined upper removable position. When the inner frame is in the upper movement limit position, the part on the wheel rail is lower than the part located directly above the outer frame and the inner frame rail. It is located in the inner frame and the inner frame is opposed to the rail from the state where the wheel is on the rail. Door roller, wherein a protrusion that engages with the convex portion of the rail is formed when moving upward Te. 2. The door wheel according to claim 1, wherein an adjustment screw for adjusting the upper movement limit position of the inner frame is attached to the outer frame. The inner frame is attached to the outer frame so that it can move linearly in the diagonally up and down direction, and the adjustment screw is attached to the outer frame at an angle, and the inner frame moves upward by contacting the inner frame from diagonally above The door cart according to claim 2, wherein the limit position is adjusted. The switching member is attached to the outer frame so that it can move in the moving direction of the door pulley, and can be switched to a door removal allowance position with a large protrusion amount and a door removal prohibition position with a small protrusion amount outward from the outer frame The door truck according to any one of claims 1 to 3, wherein: A switching hole is formed in the switching member, and a switching convex portion inserted through the switching hole is fixedly provided in the inner frame, and the switching member is switched to the door removal prohibited position in the switching hole. When the switching member is switched to the door removal allowable position, the vertical movement allowable portion that allows the vertical movement of the switching convex portion in line with the switching convex portion of the inner frame when A door-removable position holding part that engages with the switching convex part to hold the inner frame at a door-removable position, and is formed obliquely between the vertical movement allowance part and the door-removable position holding part. 5. A switching portion that moves the convex portion for switching the inner frame upward to the door detachable position holding portion by movement of the member toward the door removal allowable position side is provided. The door cart of any one of. The switching member is attached to the outer frame so that the switching member is switched to the door removal prohibition position, the first door removal permission position, and the second door removal permission position, and can be held at each of the above positions. The first door removal that holds the inner frame in the first door removable position by engaging the switching protrusion of the inner frame when the switching member is switched to the first door removal allowable position in the hole. When the possible position holding part and the switching member are switched to the second door removal allowable position, the second frame is engaged with the switching projection of the inner frame and the inner frame is below the first door removable position. A second door detachable position holding portion that is held at a detachable position, and is provided between the vertical movement allowance portion and the second door detachable position holding portion, and the second door detachable position holding portion. 6. The door pulley according to claim 5, wherein a switching portion is provided between the first door removable position holding portions.

Images