JP5208048B2 - sash - Google Patents

Description

  The present invention relates to a sash that is easy to clean.

In the conventional sash, a screen door rail is provided in the shape of an L-shaped cross section protruding upward at the outdoor end of the lower frame, and a narrow groove is formed on the indoor side of the rail. It was easy to collect, and the collected garbage was difficult to remove even with a sash brush, and was difficult to clean.
In recent years, a so-called non-rail sash having no rail on the upper surface of the lower frame as described in Non-Patent Document 1 has been put into practical use. However, these non-rail sashes have a hanging piece on the outside of the lower side of the screen door, and guide the screen door by inserting this hanging piece into a guide groove formed in the longitudinal direction of the upper surface of the lower frame. There was an inconvenience of getting in the groove.

Catalog issued by Sankyo Tateyama Aluminum Co., Ltd. “Madio J / M General Catalog Sash, Decorative Window, Accent Series, Bay Window, Katsuguchi [Conventional]” (Catalog No. STJ0322A D.08.06-200), First Edition June 2008, p. 470

  The present invention has been made in view of the circumstances described above, and an object thereof is to provide a sash that is easy to clean without a rail or a groove for guiding a screen door on the upper surface of the lower frame.

In order to achieve the above object, a sash according to a first aspect of the present invention comprises a sash frame and a screen door attached to the sash frame so as to be movable in the left-right direction. The screen door rail has a door carriage traveling portion having a substantially flat upper surface and a hanging portion provided at the outdoor end of the door running portion, and the hanging portion is provided at the outdoor end of the lower frame. There, screen door has a door roller traveling on door roller run of screen door rail, the guide portion engaged with the hanging portion of the screen door rail, vertically separately from the door roller and the guide portion relative to the amide under stile The position is freely adjustable, and the guide portion also serves as a screen door stopper .

  The sash according to the first aspect of the present invention has a lower door screen door rail having a shape having a door carriage running portion having a substantially flat upper surface and a hanging portion provided at an outdoor end of the door carriage running portion, and protrudes upward. Since the rails and grooves are eliminated, the bottom frame is easy to clean. Since the screen door has a guide portion that engages with the hanging portion of the screen door rail, the screen door can be slid to the left and right stably, and the screen door does not lift up and come off the sash frame.

Normally, the screen door is provided with a screen stopper at the top of the heel, and it is not easy to operate the lock or release it. In the sash according to the present invention, since the guide portion engaged with the screen door rail of the lower frame also serves as a screen door detachment prevention, the operation of the detachment prevention becomes easy and it is possible to prevent forgetting to apply the detachment prevention. Further, since the door carriage and the guide part can be adjusted in the vertical position separately with respect to the screen door armpit, the screen door can be easily attached and detached by adjusting the guide part in the vertical position.

It is a longitudinal cross-sectional view which shows one Embodiment of the sash of this invention. It is a cross-sectional view of the sash. It is an outdoor front view of the sash. It is a longitudinal cross-sectional view which expands and shows the lower part of the same sash. It is a cross-sectional view of the sash, wherein (a) shows a state in which the shoji and the inner shoji are closed, (b) shows a state in which the outer shoji is fully opened, and (c) shows a state in which the inner shoji is fully opened. Yes. (A) is the outdoor front view which shows the connection part of the lower heel of a shoji, a door-end heel, and the Tojiri heel by partially notching the outdoor side wall of each ridge, (b) is the room | chamber of the same part It is an outer side front view, Comprising: The state which lowered | hung the doorwheel of the door tip side is shown. It is an outdoor side front view which shows the connection part of the underarm of a screen door, and a ridge | part, notching the outdoor side wall of each ridge | part partially. It is a longitudinal cross-sectional view of the lower part of a sash which shows a state when building a shoji screen and a screen door in a sash frame. It is a longitudinal cross-sectional view of the lower part of a sash which shows other embodiment of the lower collar part of a shoji. FIG. 10 is an outdoor front view showing a connection portion between the lower heel of the shoji and the door toe in the case of FIG. 9 with a part of the outdoor side wall of each ridge notched. It is a longitudinal cross-sectional view which shows other embodiment of the rail for screen doors, and the guide part engaged with it. It is sectional drawing of the lower frame which shows other embodiment of the rail provided in a lower frame upper surface. It is a longitudinal cross-sectional view which shows the other example of the attachment method of the guide part of a screen door. It is the outdoor side front view of the lower part of a screen door which shows another example of the attachment method of the guide part of a screen door. FIG. 15 is an exploded perspective view corresponding to FIG. 14.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a sliding sash according to an embodiment of the present invention, FIG. 2 is a transverse sectional view of the sash, and FIG. 3 is an outdoor front view of the sash. The sash includes a sash frame 4 attached to the opening of the housing, an outer shroud 5a and an inner shroud 5b that can be freely opened and closed in the sash frame 4, and an outer side of the outer shunt 5a in the sash frame 4. And a screen door 21 movably accommodated in the left-right direction.
The sash frame 4 is formed by rectangularly forming an upper frame 1, a lower frame 2, and left and right flange frames 3a, 3b formed of an extruded shape of an aluminum alloy, and each frame member 1, 2, 3a, 3b. The housing fixing piece 22 is provided at the intermediate position in the indoor / outdoor direction over four circumferences, and the housing fixing piece 22 is fixed by being brought into contact with the housing 23 and screwed.
The outer shoji 5a is composed of an upper collar 6a, a lower collar 7a, a door-end collar 8a, and a door-end collar 9a formed of an extruded shape of an aluminum alloy in a rectangular frame, and a glass panel 24 placed in the frame. It is. Similarly, the inner shoji 5b has a rectangular frame made of an upper eave 6b, a lower eave 7b, a door end eave 8b, and a door end eave 9b formed of an extruded shape of an aluminum alloy, and a glass panel 24 is placed in the frame. Configured. The outer shoji 5a and the inner shoji 5b have door wheels 10a and 10b at the lower portions of the left and right ends of the lower arm 7a and 7b. Further, the outer shoji 5a and the inner shoji 5b are locked by a crescent 25.

As shown in FIG. 1, the upper frame 1 has a hanging piece 26 at the outdoor side end portion, and the upper rail 11 a for the outer obstacle 5 a and the upper rail 11 b for the inner obstacle 5 b are provided at intervals on the indoor side. Has drooping downward.
As shown in FIG. 2, the right side frame 3 a as viewed from the outdoor side is provided with an engagement portion 12 a that engages with a door rod 8 a of the outer shoji 5 a on the inner peripheral side surface so as to protrude in a substantially trapezoidal cross section. is there. The left heel frame 3b as viewed from the outdoor side is provided with an engagement portion 12b with a door ridge 8b of the inner limb 5b protruding in a substantially trapezoidal cross section on the inner peripheral side surface.

As shown in FIGS. 1 and 4, the lower frame 2 is formed in a cylindrical shape having a hollow portion. On the upper surface 14 of the lower frame 2, a rail 13 a for the outer obstacle 5 a and a rail 13 b for the inner child 5 b are slightly raised (about 2 mm) from the lower frame upper surface 14 with an arc-shaped round cross-sectional shape. The lower frame upper surface 14 is substantially flat. One guide block 15a, 15b is mounted on each rail 13a, 13b. As shown in FIGS. 2 and 5A, the guide blocks 15a and 15b are attached to the door block on the door bottom side of the door 5a in the closed state. The guide block 15b on the rail 13b for the inner limb 5b is adjacent to the door side of the door wheel 10b on the door butt side of the closed inner limb 5b. It is installed in. The guide blocks 15a and 15b are formed in a block shape in which the outdoor side surface and the indoor side surface swell in an arc shape in plan view, and are fixed on the rails 13a and 13b with two screws 64, respectively.
As shown in FIG. 4, a screen door rail 27 is provided at the outdoor end on the upper surface side of the lower frame 2. The screen door rail 27 has a downward L-shaped cross section having a door running portion 28 that projects continuously to the outdoor side of the flat lower frame upper surface 14 and a hanging portion 29 provided at the outdoor end of the door running portion 28. Is formed.

As shown in FIG. 1, the upper rods 6a and 6b have groove portions 30a and 30b opened upward, and are guided by inserting the upper rails 11a and 11b of the upper frame 1 into the groove portions 30a and 30b. The outdoor side surface and the indoor side surface of the upper collar 6a, 6b are flat surfaces having no grooves or steps.
As shown in FIG. 2, the door rods 8a and 8b are formed with recesses 16a and 16b on the outer peripheral side surfaces, and when the shoji is closed, the recesses 16a and 16b are engaged with the engaging portions 12a and 12b of the frame frames 3a and 3b. Thus, movement in the indoor and outdoor directions is regulated. The tight material 31 is attached to the outdoor side of the recesses 16a and 16b, and the tight material 31 is in contact with the slope on the outdoor side of the engaging portions 12a and 12b. The outdoor side surface and the indoor side surface of the door rods 8a and 8b are formed as flat surfaces having no grooves or steps, and an embedded puller 32 is attached to the indoor side surface.

  As shown in FIG. 4, the lower rods 7 a and 7 b are composed of two members: a lower rod main body 19 and an auxiliary material 20 attached to the lower portion of the lower rod main body 19. The lower heel main body 19 is formed with a flat surface having no grooves or steps on the outer side surface and the inner side surface, and has a groove 33 that opens downward on the lower surface. The auxiliary material 20 is fitted into the groove 33. is there. The auxiliary material 20 has tight material holding grooves 34a and 34b on the outdoor side and the indoor side, a door wheel housing portion 35 protruding upward at the central portion in the indoor and outdoor directions, and a guide groove 17 protruding downward. And have. In the tight material holding grooves 34a and 34b, the tight materials 18a and 18b are attached downward so as to sandwich the guide groove 17 from the outdoor side and the indoor side, and the tips of the tight materials 18a and 18b are bent outward and flat. It is in contact with the upper surface 14 of the lower frame. The door pulleys 10a and 10b are fixedly attached to the door housing accommodating portion 35, and the wheels 36 of the door wheel are formed with shallow grooves 37 that engage with the rails 13a and 13b on the outer peripheral surface. The guide groove 17 passes through guide blocks 15a and 15b mounted on the rails 13a and 13b.

A height adjustment mechanism 38 that allows the position of the auxiliary material 20 to be adjusted in the vertical direction with respect to the lower eyelid main body 19 is provided between the lower eyelid main body 19 and the auxiliary material 20. As shown in FIG. 6A, the height adjustment mechanism 38 is provided on both the door end side and the door bottom side, and has a pair of wedge-shaped members 39a and 39b and an adjustment screw 40, respectively. . One wedge-shaped member 39 a is fixed to the upper surface of the auxiliary member 20, and the other wedge-shaped member 39 b is in contact with the lower surface of the lower heel main body 19 and can be moved back and forth in the left-right direction by the adjusting screw 40. Reference numeral 65 in the drawing is a screw connecting the door toe rods 8a and 8b and the door toe rods 9a and 9b with the lower rods 7a and 7b.
FIG. 6 (b) shows a case where the door-side door pulley 10a is lowered for adjusting the shoji, etc., and at this time, turning the adjusting screw 40 and pushing the other wedge-shaped member 39b to assist The door end side of the material 20 moves downward together with the door pulley 10a and the tight materials 18a and 18b. Even if the height of the door pulleys 10a and 10b is changed in this way, the door pulleys 10a and 10b and the tight members 18a and 18b are both attached to the auxiliary member 20 as shown in FIG. Since the contact with the lower frame upper surface 14 can be kept constant, the watertightness and airtightness between the lower rods 7a and 7b and the lower frame 2 can be stably secured. Further, by removing the auxiliary material 20, the door carriages 10a and 10b can be easily replaced and maintained, and the tight materials 18a and 18b can be easily replaced. Since the doors 10a and 10b themselves do not need the function of adjusting the height of the wheel 36, the structure of the doors 10a and 10b can be simplified.

As shown in FIG. 8, as shown in FIG. 8, the external shoji 5 a and the inner shoji 5 b can be built into the sash frame 4 in an up-and-down manner from the indoor side or the outdoor side. The guide blocks 15 a and 15 b are inserted into the guide grooves 17 of the lower frame auxiliary material 20 at the same time as the wheels 36 are put on the rails 13 a and 13 b of the lower frame 2.
FIG.5 (b) has shown the state which opened the external shoji 5a, and the external shoji 5a was attached to the upper eaves 6a or the lower eaves 7a just before the doorwheel 10a of a door tip collides with the guide block 15a. The stopper 41 stops when it comes into contact with the Tojiri 9b of the inner shoji 5b. FIG. 5 (c) shows a state in which the inner impingement 5b is fully opened. The inner impingement 5b is in front of the door-side door pulley 10a colliding with the guide block 15b, and the door buttocks 9b is in contact with the stopper 41. Stop by touching.

As shown in FIGS. 1 to 3, the screen door 21 is configured by forming an upper rod 42, a lower rod 43, and left and right rods 44 a and 44 b into a rectangular frame, and a net 45 is stretched in the frame. As shown in FIG. 1, the upper collar 42 has a groove portion 46 opened upward, and is guided by inserting the hanging piece 26 of the upper frame 1 into the groove portion 46.
As shown in FIGS. 4 and 7, door wheels 47 are attached to the left and right ends of the lower rod 43. The door wheel 47 includes a case 48, a wheel 49, a wheel holder 50, a guide part 51, and an adjustment screw 52. The case 48 is fixed to the lower collar 43. As shown in FIG. 4, the wheel 49 rolls on the flat door carriage traveling portion 28 of the screen door rail 27 of the lower frame 2, and the outer peripheral surface of the wheel 49 is a smooth surface without a groove. . As shown in FIG. 7, the wheel holder 50 is supported by the case 48 so as to be swingable through a shaft portion 53 in the prospective direction, and swings about the shaft portion 53 as a fulcrum by operating the adjusting screw 52. Accordingly, the height of the wheel 49 can be changed accordingly. As shown in FIG. 4, the guide portion 51 has a hook-like portion 54 bent in a hook shape at the lower portion, and a slide formed in a circular cross section at the tip portion thereof so that the central portion in the left-right direction swells like a drum. The sliding contact portion 55 engages with a groove 56 formed on the back side of the screen door rail 27 so as to be slidable in the left-right direction. Further, as shown in FIG. 7, the guide portion 51 is fitted in a groove 57 formed in the case 48 so as to be slidable in the vertical direction, and through a vertical slot 58 formed in the outdoor side wall of the lower rod 43. It is fixed to the lower collar 43 by the inserted screw 59. Reference numeral 66 in the drawing is a screw connecting the flanges 44 a and 44 b with the lower flange 43.
The screen door 21 is attached to the sash frame 4 in an up-and-down manner from the outdoor side as in the conventional case. At this time, as shown in FIG. 8, the screw 59 is loosened and the guide portion 51 is slid downward. The wheel 49 of the door wheel 47 is placed on the door wheel traveling portion 28 of the screen door rail 27, and then the guide portion 51 is slid upward to engage the sliding contact portion 55 with the groove 56 on the back side of the screen door rail 27, and screw 59 is tightened to fix the guide part 51. The guide portion 51 also serves as a stopper that prevents the screen door 21 from being detached from the sash frame 4.

This sash is formed as described above, and the outer frame 5a of the lower frame 2 and the rails 13a and 13b for the inner frame 5b are formed so as to slightly protrude from the upper surface 14 of the lower frame, and the screen door rail 27 is formed. The lower frame upper surface 14 is formed in a downward L-shaped cross section continuous to the outdoor side, and the lower frame upper surface 14 is made substantially flat and the rails and grooves protruding upward are eliminated, so that the lower frame 2 can be easily cleaned with a rag or the like. And there is no litter in the groove. In the closed state, the outer shoji 5a and the inner shoji 5b are guided by the upper rails 6a and 6b by the upper rails 11a and 11b of the upper frame 1 as shown in FIG. 1, and as shown in FIG. Since the engaging portions 12a and 12b of the door and the recesses 16a and 16b of the door rods 8a and 8b are engaged with each other, and the movement of the lower part on the door bottom side in the room is restricted by the guide blocks 15a and 15b, the sash frame 4. The shoji 5a and 5b are not removed from 4. As shown in FIG. 4, the guide blocks 15a and 15b mounted on the rails 13a and 13b of the lower frame 2 pass through the guide grooves 17 of the lower rods 7a and 7b even when the shoji 5a and 5b are opened and closed. By being, it can prevent reliably that the shoji 5a, 5b remove | deviates from the sash frame 4. FIG. Further, tight materials 18a and 18b are disposed so as to sandwich the guide groove 17 of the lower rods 7a and 7b from the outdoor side and the indoor side, and the tips of the tight materials 18a and 18b are in contact with the upper surface 14 of the lower frame. Thus, it is possible to ensure water tightness and air tightness between the lower rods 7a and 7b and the lower frame 2.
Moreover, in the conventional sash, the engaging part with the door-end rod 8a, 8b was formed in the fin shape which protruded at right angle to the inner peripheral side on the inner peripheral side surface of the collar frame 3a, 3b. Since the corresponding engaging portions 12a and 12b are formed in a substantially trapezoidal cross section that protrudes from the inner peripheral side surface, the eaves frames 3a and 3b are also easily cleaned with a rag or the like. Furthermore, since the outdoor side surfaces and the indoor side surfaces of the inner and outer shoji screens 5a and 5b and the screen door 21 are also flat surfaces without grooves or steps, the screen doors 5a and 5b and the screen door 21 can be easily cleaned with a rag or the like. .

  In the screen door 21, the guide part 51 incorporated in the case 48 of the door wheel 47 engages with the groove 56 on the back side of the screen door rail 27, instead of the wheel 49 of the door wheel 47 not being caught by the screen door rail 27 of the lower frame 2. Therefore, the lower part of the screen door 21 can be stably slid to the left and right without shaking in the indoor and outdoor directions, and the guide part 51 can also restrict the screen door 21 from being lifted and removed from the sash frame 4. In this screen door 21, the guide portion 51 also serves as a screen door stopper, and since the guide portion 51 is provided at the lower portion of the screen door 21, the screen door 21 is prevented from coming off compared to a conventional screen door provided with a screen stopper at the top of the screen door. It is possible to easily perform the operation of applying or releasing the screen and to forget to apply the stopper when the screen door 21 is attached to the sash frame 4.

  9 and 10 show other embodiments of the lower collars 7a and 7b of the shoji 5a and 5b. The lower rods 7a and 7b are composed of the lower rod main body 19 and the auxiliary material 20, and a door wheel 10a having a function of adjusting the height of the wheel 36 in the door wheel housing portion 35 provided on the auxiliary material 20 is provided. 10b is attached. Reference numeral 60 in the drawing is an adjustment screw for adjusting the height of the wheel 36. According to the present embodiment, when the height of the wheel 36 of the door wheel 10a, 10b is changed, the gap between the lower rod 7a, 7b and the lower frame upper surface 14 changes, but extends below the tight members 18a, 18b. By keeping the length long enough, water tightness and air tightness can be sufficiently secured.

  The lower collars 7a and 7b of the shoji 5a and 5b can be integrally formed without being divided into the lower collar body 19 and the auxiliary material 20. In that case, a guide groove 17 is formed in the lower part of the integrally formed lower rods 7a and 7b, tight materials 18a and 18b are attached so as to sandwich the guide groove 17 from the inside and outside of the room, and a wheel height adjusting function is provided. The provided door pulleys 10a and 10b are attached to the left and right ends of the lower part of the lower rods 7a and 7b. Further, when the lower rod 7a, 7b is divided into the lower rod main body 19 and the auxiliary material 20, the tight members 18a, 18b can be attached to the lower rod main body 19.

  The shape of the rails 13a and 13b on which the inner and outer shoji doors 10a and 10b provided on the lower frame upper surface 14 travel is not limited to the shape of the gentle arc as described above, but is shown in FIG. As shown in FIG. 12 (b), the shape raised in a trapezoidal shape, the shape raised in an isosceles triangle shape, or the steep R shape as shown in FIG. 12 (c) can be used. Furthermore, as shown in FIG. 12 (d), it may be a concave shape in a gentle arc shape. In short, the rails 13a and 13b have a shape that does not interfere with the cleaning of the lower frame upper surface 14 with a rag or the like so that dust does not collect and collect, and the upper surfaces of the rails 13a and 13b are horizontal portions of the lower frame upper surface 14. Any shape that can be wiped with a rag or the like can be used.

  In the embodiment described in FIG. 1 and the like, the tight members 18a and 18b are provided on both the outdoor side and the indoor side so that the guide groove 17 is sandwiched between the lower rods 7a and 7b. A tight material may be provided only on either one of these.

  FIG. 11 shows another embodiment of the door wheel 47 of the screen door 21 and the screen door rail 27. FIG. 11A shows a case where the wheel 49 of the door wheel 47 travels a position on the indoor side of the outdoor side wall 61 of the lower frame 2. FIG. 11 (b) shows that the hook-like portion 54 of the guide portion 51 is engaged so as to sandwich the hanging portion 29 of the screen door rail 27 to restrict the movement in the indoor and outdoor directions. There is a gap 62 between the sliding contact portion 55 provided in the portion and the outdoor side wall 61 of the lower frame 2. FIG. 11 (c) shows that the hook-like portion 54 of the guide portion 51 is engaged with the hanging portion 29 of the screen door rail 27 to restrict the movement and lifting in the indoor / outdoor direction. There is a gap 63 between the screen door rail 27 and the lower surface of the door travel section 28. As described above, the guide part 51 only needs to be engaged with at least the back surface (inner side surface) of the hanging part 29. A shallow groove may be formed in the wheel 49 of the door wheel 47, and a protrusion that engages with the groove may be formed on the upper surface of the door wheel running portion 28 of the screen door rail 27.

In the embodiment described so far, the operation of sliding up and down the guide portion 51 that also serves to prevent the screen door 21 from coming off is performed from the outdoor side. However, as shown in FIG. If the guide part 51 is fixed with a screw 59 inserted from the indoor side through a long hole 58 formed in the indoor side wall 67, the inner wall 67 of the lower collar 43 is brought into contact with the inner surface of the indoor side wall 67. The operation of the guide unit 51 can be performed from the indoor side.
FIGS. 14 and 15 show still another example of how to attach the guide portion 51, and the operation of sliding the guide portion 51 up and down is performed from the side of the screen door 21. The guide portion 51 is formed with a mounting portion 68 protruding from the side at the top, and an insertion hole 69 for a fixing screw 59 is formed in the mounting portion 68 from the side, and the screw 59 is screwed together. Square nuts 70 are embedded, and slits 71 are formed in the vertical direction on the outdoor side surface and the indoor side surface. A notch 73 that opens downward is formed in the side wall 72 of the screen door ridge 44a. The slit 71 is engaged with the notch 73 and the guide portion 51 is inserted into the ridge 44a. By tightening the inserted screw 59, the guide portion 51 is fixed so as to sandwich the side wall 72 of the flange 44a. According to the present embodiment, the operation of sliding the guide portion 51 up and down can be performed from either the outdoor side or the indoor side.

  The present invention is not limited to the embodiments described above. The guide portion 51 that engages with the hanging portion 29 of the screen door rail 27 of the lower frame 2 can also be installed separately from the door pulley 47. The shape of the rails 13a and 13b for guiding the shojis 5a and 5b of the lower frame 2 is arbitrary. The rail protrudes from the upper surface of the lower frame like a normal sash, or the lower rail like a conventional non-rail sash. A groove for guiding the hanging piece may be formed. The present invention is not limited to the sliding sash, but can be applied to a single-drawing sash. Further, the present invention can be applied to a door sash as well as a window sash.

1 Upper frame 2 Lower frame 3a, 3b Spear frame 4 Sash frame 5a Shoji (shoji)
5b inner shoji (shoji)
6a, 6b Upper rod 7a, 7b Lower rod 8a, 8b Toe rod 9a, 9b Tojiri rod 10a Door-side door cart 10b Toji-side door cart 11a, 11b Upper rail (guide part)
12a, 12b engaging portion 13a, 13b rail 14 lower frame upper surface 15a, 15b guide block 16a, 16b recess (engaged portion)
17 Guide groove 18a, 18b Tight material 19 Lower armor body 20 Auxiliary material 21 Screen door 27 Screen door rail 28 Door car traveling part 29 Hanging part 47 Door car 48 Case 51 Guide part

Claims (1)

A sash frame and a screen door that is attached to the sash frame so as to be movable in the left-right direction, the lower frame of the sash frame has a screen door rail on the outdoor side, and the screen door rail includes a door carriage traveling portion having a substantially flat top surface. A hanging portion provided at the outdoor end of the door running portion, the hanging portion is provided at the outdoor end of the lower frame, and the screen door is a door wheel running on the door running portion of the screen door rail. It has a guide part that engages with the hanging part of the screen door rail, and the door carriage and the guide part can be adjusted up and down separately with respect to the screen door armpit, and the guide part also serves to prevent the screen door from coming off. And sash.

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