TW201736711A - Door window pulley and door window preventing the orientation of the axle from shifting even if side walls are not respectively disposed to the base component and the support component - Google Patents

Abstract

The invention provides a door window pulley and a door window capable of not damaging original functions to accomplish lightweight and cost reduction. The door window pulley has: a support component supporting a wheel via an axle by way of rotating; and a base component supporting a proximal end portion of the support component via a support axle by way of rotating, wherein a screw thread tightening member and a torsion spring for restricting the rotation status of the support component relative to the base component are disposed between the support component and the base component. The base component has: a guide component engaged with the front end portion of the support component to restrict a rotation upper limit position of the support component relative to the base component and to limit a separation movement of the support component relative to the base component; and a stopper component disposed at a position differing from the guide component and leaning against the support component, thereby restricting a rotation lower limit position of the support component relative to the base component.

Description

Door and window pulleys and doors and windows

The present invention relates to a door and window pulley and a door and window.

A door and window pulley provided on a door sash such as a screen door includes a pulley that can change the height of the wheel. The door and window pulley includes: a support member that rotatably supports the wheel by the axle, a base member that movably receives the support member, and an adjustment member between the base member and the support member, The door and window pulleys are mounted to the lower frame of the door sash via the base member. Such a door and window pulley can change the position of the support member with respect to the base member by adjusting the adjustment member, whereby the height position of the wheel with respect to the lower frame can be changed. Therefore, when the door sash is inclined with respect to the frame body, the door sash can be corrected to the correct posture by adjusting the door sash (see, for example, Patent Document 1).

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Publication No. 62-12051.

However, in the above-mentioned door and window pulley, in order to support both ends of the axle at the support portion The piece is provided with two side wall portions, and two side wall portions are also provided in the base member for covering the two side wall portions of the support member. Therefore, based on the door and window pulley, the side wall portion of the support member and the side wall portion of the base member are mutually guiding portions, and the support member is reliably guided up and down, so that the orientation of the axle does not shift with respect to the base member. Damage to the original function. However, in such a window and door pulley, the structure of the base member and the support member is complicated, and it is not necessarily desirable if weight and manufacturing cost are taken into consideration. In particular, when a lightweight door sash such as a screen door is applied, the above problem becomes remarkable.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a door and window pulley and a door and window which can achieve weight reduction and cost reduction without impairing the original function.

In order to achieve the above object, the present invention relates to a door and window pulley comprising: a support member that rotatably supports a wheel by an axle; and a base member that presses a base end portion of the support member by a support shaft Rotatably supported; an adjustment member for defining a rotational posture of the support member with respect to the base member is disposed between the support member and the base member; the base member includes: a guide member, and the a front end portion of the support member is engaged, thereby defining an upper limit position of the support member relative to the base member, and restricting the support member from moving apart relative to the base member; and a stop member disposed on the The guide members are at different positions and abut against the support member, thereby defining a lower limit position of rotation of the support member with respect to the base member.

According to the invention, the guide member provided to the base member is engaged with the front end portion of the support member, thereby restricting the separation of the support member from the base member. Therefore, even if the side wall portion is not provided to the base member and the support member, the problem of the orientation of the axle does not occur, and the weight reduction and cost reduction can be achieved without impairing the original function. Moreover, since the stopper member is provided, it is possible to restrict the lower limit position of the rotation of the support member with respect to the base member, that is, the lower limit position of the wheel, and therefore, it is possible to secure a card between the lower frame and the lower frame of the applicable door sash. Combine to prevent the door and window sash from falling off.

Further, in the above-described door and window pulley, the base member has a rectangular stopper for cutting at a portion corresponding to a lower limit of rotation of the support member, and the stopper member has a mutual pair of the slits for the stop A stopper piece is formed in which the two edge portions are obliquely protruded and the end portions are connected to each other, and the side end surface of the stopper piece abuts against the end surface of the support member.

According to the present invention, the stopper member can be formed by cutting the stopper piece from the base member, and the number of parts can be reduced to further reduce the weight and cost.

Further, in the above-described door and window pulley, the base member has a guide slit which is rectangular in the vertical direction at a portion corresponding to the front end portion of the support member, and the guide member has an inclined guide portion. Separatingly projecting from the portions of the guiding slit as the upper edge and the lower edge, respectively; and restricting the guiding portion, which is provided to connect the protruding end portions of the inclined guiding portions, and the front end portion of the support member is inserted in the above limitation Between the guiding portion and the base member, by being disposed on the above guide The upper limit position of rotation of the above-described support member is defined toward the inclined guide portion above the slit.

According to the present invention, the guide member can be formed by cutting the inclined guide portion and the restricting guide portion from the base member, and the number of components can be reduced to further reduce the weight and cost.

Further, in the above-described door and window pulley, in the front end portion of the support member, a rib protruding toward the base member is provided at a portion facing the base member.

According to the present invention, even when the support member is biased in a state of abutting against the upper inclined guide portion, the front end portion of the support member can be prevented from moving in the direction along the axle due to the contact of the rib with the base member. .

Further, in the above-described door and window pulley, the adjustment member includes a threaded fastener that is screwed to the support member and has an end surface that abuts against the base member, and the screw of the threaded fastener with respect to the support member is changed The position is coupled to thereby define a rotational attitude of the support member relative to the base member.

According to the present invention, the rotational position of the support member relative to the base member is changed by changing the screwing position of the threaded fastener, so that the height position of the wheel relative to the base member can be adjusted.

Further, the present invention is the above-described door and window pulley, wherein the adjustment member is provided A spring member that urges between the support member and the base member in a direction in which an end surface of the screw fastener abuts against the base member.

According to the present invention, the rotational posture of the support member with respect to the base member can be defined by the urging force of the spring member and the threaded fastener.

Further, the present invention relates to a door and window which is provided with the above-described door and window pulley at a lower frame of the door sash.

According to the invention, the guide member provided to the base member is engaged with the front end portion of the support member, thereby restricting the separation of the support member from the base member. Therefore, even if the side wall portion is not provided to the base member and the support member, the problem of the orientation of the axle does not occur, and the weight reduction and cost reduction can be achieved without impairing the original function. Moreover, since the stopper member is provided, it is possible to restrict the lower limit position of the rotation of the support member with respect to the base member, that is, the lower limit position of the wheel, and therefore, it is possible to secure a card between the lower frame and the lower frame of the applicable door sash. Combine to prevent the door and window sash from falling off.

According to the invention, the guide member provided to the base member is engaged with the front end portion of the support member, thereby restricting the separation of the support member from the base member. Therefore, even if the side wall portion is not provided to the base member and the support member, the problem of the orientation of the axle does not occur, and the weight reduction and cost reduction can be achieved without impairing the original function. Moreover, since the stopper member is provided, the support member can be restricted relative to the base Since the lower limit position of the rotation of the component is the lower limit position of the wheel, there is an advantage that the amount of engagement between the lower frame of the door sash and the guide rail of the lower frame can be ensured to prevent the door sash from coming off.

20‧‧‧ screen doors and windows

22‧‧‧ Lower frame

30‧‧‧Door and window pulley

130‧‧‧Support parts

131b‧‧‧ Ribs

230‧‧‧Base parts

233‧‧‧Guide parts

233a‧‧‧Direction incision

233b‧‧‧ tilt guide

233c‧‧‧Restricted Guide

234‧‧‧stop parts

234a‧‧‧ Stop cutting

234b‧‧‧stop film

330‧‧‧Axle

331‧‧‧ Wheels

340‧‧‧Threaded fasteners

350‧‧‧Support shaft

351‧‧‧ Torsion spring

Fig. 1 is a partially enlarged view showing a door sash of a door and window of a door and window pulley according to an embodiment of the present invention.

Fig. 2 is a longitudinal cross-sectional view showing the main part of the door and window of the door sash shown in Fig. 1 in an enlarged manner.

Fig. 3 is a view showing a door and window pulley used in the door sash shown in Fig. 1, wherein (a) is a view in which the wheel is disposed at the uppermost position with respect to the base member, and (b) the wheel is disposed with respect to the base member. The map of the bottom state.

Fig. 4 is a view of the door and window pulley shown in Fig. 3 as seen from the base end side.

Fig. 5 is a view of the door and window pulley shown in Fig. 3 as seen from the front end side.

Fig. 6 is a view of the door and window pulley shown in Fig. 3 as seen from below.

Fig. 7-1 is a view of the support member of the door and window pulley shown in Fig. 3 as seen from the indoor side.

Fig. 7-2 is a view of the support member of the door and window pulley shown in Fig. 3 as seen from the outdoor side.

Fig. 7-3 is a view of the support member of the door and window pulley shown in Fig. 3 as seen from below.

Fig. 7-4 is a view of the support member of the door and window pulley shown in Fig. 3 as seen from the base end side.

Fig. 8-1 is a view of the base member of the door and window pulley shown in Fig. 3 as seen from the indoor side.

Fig. 8-2 is a view of the base member of the door and window pulley shown in Fig. 3 as seen from the outdoor side.

Fig. 8-3 is a view of the base member of the door and window pulley shown in Fig. 3 as seen from below.

Fig. 8-4 is a view of the base member of the door and window pulley shown in Fig. 3 as seen from the front end side.

Figure 8-5 is a cross-sectional view taken along line X-X of Figure 8-1.

8-6 is a cross-sectional view taken along line Y-Y of Fig. 8-1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the door and window pulley and the door and window of the present invention will be described in detail with reference to the drawings.

1 and 2 are views showing a door and window of a door and window pulley according to an embodiment of the present invention. The door and window exemplified here is a sliding window provided with a screen door (door sash) 20 at a portion disposed on the outermost side of the frame body 10. The screen door 20 is configured by attaching a gauze 24 to a frame formed by the upper frame 21, the lower frame 22, and the right and left vertical frames 23. In the screen door window 20 of the present embodiment, the crosspiece 25 is provided between the intermediate portions of the right and left vertical frames 23. In addition, in the following, for convenience of explanation, the terms such as the depth direction and the appearance surface direction are appropriately used for explanation. The depth direction is as indicated by the arrow A in Fig. 2, along the direction of the depth of the door and window. The plane along the depth direction is sometimes referred to as the depth plane. In addition, in the case of the member in the horizontal direction, such as the frame 21 and the lower frame 22, the direction in the vertical direction is the direction along the vertical direction orthogonal to the depth direction, and the vertical frame 23 is up and down. In the case of a component in the direction, a direction along the horizontal direction orthogonal to the depth direction. A plane along the direction of the design surface is sometimes referred to as a design surface.

A mounting groove 22a is provided in a portion on the indoor side of the lower frame 22 of the screen door 20, and a window pulley 30 is provided at each of both ends in the longitudinal direction of the mounting groove 22a. The mounting groove 22a is a recess formed downward between the cover sheets 22b provided in the lower frame 22. The cover sheet portion 22b is a thin plate-like portion that is bent substantially downward from the upper edge portion of the lower surface of the lower frame 22 facing the indoor surface toward the indoor side.

The door and window pulley 30 is a member for sliding the screen door window 20 along the guide rail 11a provided on the lower frame 11, and each has a support member 130 and a base member 230 as shown in FIGS. 3 to 6 . In addition, since the two door and window pulleys 30 have the same structure, only one of them will be described below, and the same reference numerals will be given to the other, and the detailed description will be omitted. Further, when the components of the door and window pulley 30 are described, the direction and the position are determined by the posture of the lower frame 22.

The support member 130 is formed by molding a metal plate such as stainless steel, and has a support plate portion 131, a connection plate portion 132, a bearing plate portion 133, and an adjustment plate portion 134 as shown in FIGS. 7-1 to 7-4. . The support plate portion 131 has its upper end and the lower edge extending substantially horizontally at its base end portion, and at its front end portion, the upper edge extends substantially horizontally, and the lower edge extends obliquely upward. In the present embodiment, when the support member 130 is viewed from the indoor side, the left side is the base end portion, and the right side is the front end portion.

A tapered portion 131a and a rib 131b are provided at a front end portion of the support plate portion 131, and a bearing hole 131c is provided at a proximal end portion thereof. The truncated cone portion 131a has a truncated cone shape that protrudes toward the indoor side, and the center portion thereof supports the wheel 331 by the axle 330. The guide rail 11a of the frame 331 and the lower frame 11 is a rail rolling, and is rotatably disposed at a front end portion of the axle 330 that extends substantially horizontally from the truncated cone portion 131a toward the inside of the room. The rib 131b protrudes from the outdoor surface facing the support plate portion 131 toward the outdoor side, and extends in the vertical direction on the distal end side of the truncated cone portion 131a. The protruding size of the rib 131b is substantially the same as the thickness of the support plate portion 131. The bearing hole 131c is a through hole provided in an upper half portion of the base end portion of the support plate portion 131.

The connecting plate portion 132 is a portion that is bent substantially perpendicularly from the base end edge of the support plate portion 131 toward the indoor side. As can be seen from the figure, the width of the connecting plate portion 132 in the vertical direction is substantially 1/2 of the size of the supporting plate portion 131, and is connected to the upper half of the supporting plate portion 131. The extension of the connecting plate portion 132 from the support plate portion 131 is set to be smaller than the width of the mounting groove 22a provided in the lower frame 22.

The bearing plate portion 133 is a portion that is bent substantially perpendicularly from the extending end portion of the connecting plate portion 132 so as to face the support plate portion 131. The width of the bearing plate portion 133 in the vertical direction is substantially the same as that of the support plate portion 131, and the extension of the bearing plate portion 133 from the connecting plate portion 132 is set to be approximately 1/3 of the size of the support plate portion 131. A shaft through hole 133a is provided in a portion of the bearing plate portion 133 that faces the bearing hole 131c of the support plate portion 131.

The adjustment plate portion 134 is a portion that is bent substantially perpendicularly from the upper edge of the base end portion of the support plate portion 131 toward the indoor side. The extension of the adjustment plate portion 134 from the support plate portion 131 is substantially the same as that of the connection plate portion 132, and the width dimension of the adjustment plate portion 134 is set to be slightly smaller than 1/2 of the extension length of the support plate portion 131. As shown in FIG. 3( a ), a screw fastener 340 is disposed on the adjustment plate portion 134 . The screw fastener 340 is screwed to the screw hole 134a provided in the distal end side portion of the adjustment plate portion 134 than the bearing hole 131c, and extends in the vertical direction with the head portion 340a in the upward direction.

In the support member 130, a support shaft 350 is inserted into a shaft through hole 133a provided in the bearing plate portion 133 and a bearing hole 131c provided in the support plate portion 131. The support shaft 350 is provided with a caulking end portion 350a that protrudes from the support plate portion 131 toward the outside.

Similarly to the support member 130, the base member 230 is formed by molding a metal plate material such as stainless steel, and has a substrate portion 231 and an upper plate portion 232 as shown in FIGS. 8-1 to 8-6. The substrate portion 231 has a substantially rectangular outer shape, and its dimension in the vertical direction and the dimension in the left-right direction are larger than the support member 130. The upper plate portion 232 is a portion that extends substantially horizontally from the upper edge of the substrate portion 231 toward the indoor side. The extension length of the upper plate portion 232 is also larger than the extension length of the adjustment plate portion 134 in the support member 130. The base portion 231 of the base member 230 is provided with a support base portion 231a, a guide member 233, and a stopper member 234, and the upper plate portion 232 is provided with a mounting screw hole 232a and an adjustment operation hole 232b.

The support base portion 231a is a portion that protrudes in a rectangular shape toward the indoor side. The protruding height of the support base portion 231a is substantially the same as the thickness of the substrate portion 231. In the present embodiment, when the substrate portion 231 is viewed from the indoor side, the support base portion 231a is provided at a position slightly shifted to the left side with respect to the center.

The guide member 233 has two inclined guide portions 233b that protrude from the upper and lower edge portions of the guide slit 233a provided in the substrate portion 231 so as to gradually approach each other toward the indoor side, and a restriction guide portion 233c which is set to The protruding ends of the inclined guide portions 233b are connected. In the present embodiment, the guide member 233 is provided by performing lancing on the substrate portion 231. The guide slit 233a is a rectangular slit having a narrow width in the vertical direction at a portion on the right side of the support base portion 231a when the substrate portion 231 is viewed from the indoor side. The dimension of the guide slit 233a in the vertical direction is set to be slightly smaller than the height dimension of the substrate portion 231. As can be seen from the figure, a gap of twice the thickness or more is secured between the restriction guide portion 233c and the substrate portion 231, and the substrate portion 231 is Extends in a substantially parallel manner.

The stopper member 234 has two stopper pieces 234b which protrude from the left and right side edge portions of the stopper slit 234a provided in the substrate portion 231 so as to gradually approach each other toward the indoor side, and the projecting end The departments are connected to each other. In the present embodiment, similarly to the guide member 233, the stopper member 234 is provided by performing the cutting process on the substrate portion 231. The protruding size of the stopper piece 234b from the substrate portion 231 is set to be larger than the protruding size of the support base portion 231a. The stopper slit 234a is provided obliquely between the support base portion 231a and the guide member 233 at a position lower than the support base portion 231a. Specifically, the stopper slit 234 a is provided so as to be inclined toward the upper right when the substrate portion 231 is viewed from the indoor side.

The mounting screw holes 232a are provided in the up and down direction at both end portions of the upper plate portion 232. The adjustment operation hole 232b is an elliptical through hole formed in the upper plate portion 232 at a position corresponding to the substantially center of the support base portion 231a of the substrate portion 231. The adjustment operation hole 232b is formed so that the front end portion of the tool such as a screwdriver can be inserted, but the head portion 340a of the screw fastener 340 screwed to the support member 130 cannot be inserted.

As shown in FIGS. 3 to 6, in the base member 230, the support member 130 is supported by caulking the caulking end portion 350a of the support shaft 350 of the insertion support member 130 to the support base portion 231a. The shaft core of the shaft 350 is rotatably supported centrally. The front end portion of the support plate portion 131 is inserted between the substrate portion 231 and the restriction guide portion 233c of the guide member 233, and the rotation range of the support member 130 is restricted by the two inclined guide portions 233b. However, the stopper member 234 is disposed at a position such that the front end portion of the support member 130 faces downward. The rotation guide is set in such a manner that the inclined guide portion 233b provided below is in contact with the stopper member 234 to define the lower limit position. Further, the inclination angle of the stopper member 234 is set such that the end faces of the respective stopper pieces 234b simultaneously abut against the inclined end faces of the support plate portion 131.

Further, the screw fastener 340 provided on the support member 130 is disposed to face the adjustment operation hole 232b provided in the upper plate portion 232, and the screwing position can be changed by inserting the distal end portion of the tool such as a screwdriver through the adjustment operation hole 232b. . Further, a torsion spring (spring member) 351 is provided on the support shaft 350. The distal end portion of the torsion spring 351 is locked to the support member 130 and the base member 230 such that the distal end portion of the support member 130 is always biased upward with respect to the base member 230. Therefore, in the state shown in (a) of FIG. 3, if the screwing position of the screw fastener 340 is changed by the urging force against the torsion spring 351, the amount of protrusion from the adjustment plate portion 134 is increased. Then, the distance between the adjustment plate portion 134 of the support member 130 and the upper plate portion 232 of the base member 230 is increased, so that the position of the wheel 331 can be slid downward with respect to the base member 230.

As shown in FIG. 1, the door and window pulley 30 configured as described above is attached to the lower frame 22 in such a manner that one end portion of the upper plate portion 232 of the base member 230 is locked to the locking portion 22d provided in the mounting groove 22a. The mounting bolt S is screwed into the mounting screw hole 232a provided at the other end portion of the upper plate portion 232 via a bolt insertion hole (not shown) provided in the cover piece portion 22b.

Although not explicitly shown in the drawings, the door and window pulley 30 is attached to the cover portion 22b. A slit 22c capable of inserting a distal end portion of a tool such as a screwdriver is provided at a portion facing the adjustment operation hole 232b. Thereby, after the screen door window 20 is assembled to the frame body 10, even if the screen door window 20 is inclined with respect to the frame body 10, the threaded fastener 340 can be operated by the slit 22c of the cover piece portion 22b, thereby adjusting the wheel up and down. With respect to the position of the lower frame 22, the screen door window 20 can be corrected to the correct posture.

According to the above-described door and window pulley 30, the front end portion of the support plate portion 131 supporting the wheel 331 is disposed between the guide member 233 provided on the base member 230 and the substrate portion 231, and between the guide member 233 and the substrate portion 231. Move up and down in the gap. Therefore, although the base member 230 has only the single substrate portion 231 and the support member 130 has only the structure of the single support plate portion 131, it does not cause the problem that the orientation of the axle 330 is shifted, and the door and window can be realized. The weight of the pulley 30 is reduced and the cost is reduced.

Further, when the wheel 331 is disposed above the base member 230, the lower frame 22 of the screen door 20 is adjacent to the lower frame 11, as shown in FIG. 2, the bearing plate portion 133 and the cover portion 22b of the support member 130. The lower end portions are respectively located at positions opposed to the guide rails 11a. Therefore, when an external force that is pressed toward the outdoor side is applied to the screen door 20, the bearing plate portion 133 and the cover piece portion 22b abut against the guide rail 11a, and the screen door 20 can be prevented from falling off from the frame body 10.

On the other hand, when the wheel 331 is disposed below the base member 230, the screen door 20 is disposed above the lower frame 11 so that the bearing plate portion 133 and the cover portion 22b and the guide rail 11a are opposed to each other. The amount of engagement is reduced.

Therefore, in the door roller 30, the lower limit position of the rotation of the support member 130 with respect to the base member 230 is defined by abutting the support member 130 and the stopper member 234, and the above problem can be prevented in advance. In other words, the position of the stopper member 234 of the door and window pulley 30 is brought into contact with the support plate portion 131 before the engagement amount between the bearing plate portion 133 and the cover piece portion 22b and the guide rail 11a reaches a predetermined lower limit value. By setting in this manner, even when the screw fastener 340 is maximally operated, the amount of engagement between the bearing plate portion 133 and the cover portion 22b and the guide rail 11a can be sufficiently ensured, and the screen door 20 does not fall off. .

Further, when the threaded fastener 340 is operated to minimize the amount of protrusion from the adjustment plate portion 134, the upper edge of the support plate portion 131 abuts against the inclined guide portion 233b provided above the guide member 233, and the support plate portion The front end portion of the 131 receives a biasing force toward the outdoor side due to the load of the screen door window 20. However, the front end portion of the support plate portion 131 is provided with a rib 131b so as to protrude from the surface facing the outdoor side toward the outdoor side. Therefore, since the rib 131b abuts against the substrate portion 231 of the base member 230, the support plate portion 131 does not deflect toward the outdoor side, and the orientation of the axle 330 does not shift.

Further, in the above-described embodiment, the door and window pulley 30 applied to the screen door 20 is exemplified, but it is obviously applicable to other door and window fans. Further, the configuration in which the screw fastener 340 and the torsion spring 351 are provided as the adjusting member is exemplified, but the torsion spring is not necessarily required, and the screw fastener and the base member may be screwed together. Further, since the stopper member 234 and the guide member 233 are formed by performing the cutting process on the base member 230, the number of components can be reduced. However, the present invention does not require the stopper member or the guide member to be integrally formed with the base member. .

30‧‧‧Door and window pulley

130‧‧‧Support parts

131‧‧‧Support plate

131b‧‧‧ Ribs

133‧‧‧ bearing plate

134‧‧‧Adjustment Board

230‧‧‧Base parts

231‧‧‧Parts Department

232‧‧‧Upper Board

232b‧‧‧Adjust the operation hole

233‧‧‧Guide parts

233a‧‧‧Direction incision

233b‧‧‧ tilt guide

234‧‧‧stop parts

330‧‧‧Axle

331‧‧‧ Wheels

340‧‧‧Threaded fasteners

340a‧‧‧ head

350‧‧‧Support shaft

351‧‧‧ Torsion spring

Claims (7)

A door and window pulley is provided with: a support member that rotatably supports a wheel by an axle; and a base member that rotatably supports a base end portion of the support member by a support shaft; An adjustment member for defining a rotational posture of the support member with respect to the base member is provided between the support member and the base member; and the base member includes a guide member that engages with a front end portion of the support member, The upper limit position of the support member relative to the base member is defined, and the support member is restricted from moving relative to the base member; and the stop member is disposed at a position different from the guide member, and is The support member abuts thereby defining a lower limit position of rotation of the support member relative to the base member. The door and window pulley according to claim 1, wherein the base member has a rectangular stopper for cutting at a portion corresponding to a lower limit of rotation of the support member; and the stopper member has a mutual cutout from the stopper The opposing edge portions of the opposite edge portions are obliquely projecting and the projecting end portions are connected to each other, and the side end faces of the stopper pieces abut against the end faces of the support members. The door and window pulley according to claim 1, wherein the base member has a guide slit having a rectangular shape in a vertical direction at a portion corresponding to a front end portion of the support member; The guide member has: an inclined guide portion that obliquely protrudes from a portion of the guide slit as an upper edge and a lower edge, and a restriction guide portion that is provided to connect the protruding end portions of the inclined guide portions, and The front end portion of the support member is inserted between the restriction guide portion and the base member, and the rotation upper limit position of the support member is defined by an inclined guide portion provided above the guide slit. The door and window pulley according to claim 3, wherein a rib that protrudes toward the base member is provided at a portion of the front end portion of the support member that faces the base member. The door and window pulley according to claim 1, wherein the adjustment member includes a threaded fastener that is screwed to the support member and has an end surface abutting the base member, and the screwing of the threaded fastener with respect to the support member is changed. The position thereby defining a rotational attitude of the aforementioned support member relative to the aforementioned base member. The door and window pulley according to claim 5, wherein the adjustment member includes a spring member that is located between the support member and the base member and that urges an end surface of the threaded fastener to abut against the base member. A door and window is provided in the lower frame of the door sash, which is provided with the door and window pulley according to any one of claims 1 to 6.