JP2013076289A - Door roller and fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an increase in dimension along a vertical direction, and to increase a withstand load by surely grounding wheels even when a lower frame bends.SOLUTION: First side walls 11 of a wheel support body 10 are provided with support projections 15 projecting toward second side walls 21. The second side walls 21 of a door roller body 20 are provided with contact engaging surfaces 23 respectively engaged with the support projections 15 to rotatably support the wheel support body 10 and the door roller body 20. The support projections 15 are formed at positions facing each other of the first side walls 11. The contact engaging surfaces 23 incline and extend in the same direction at positions facing each other of the second side walls 21. An adjusting bolt 42 which is screwed with a nut block 40 and moves the door roller body 20 along a lateral direction relative to the wheel support body 10 when rotating and a guide mechanism 14, 50 which changes engaging positions of the support projections 15 with respect to the contact engaging surfaces 23 when the door roller body 20 moves along the lateral direction relative to the wheel support body 10 are provided between the wheel support body 10 and the door roller body 20.

Description

  The present invention relates to a door wheel and joinery, and more particularly to a door wheel and joinery that can adjust the position of a wheel with respect to the lower arm of a shoji.

  As a door wheel applied to a fitting such as a sliding window and a sliding door, a door wheel configured to be able to adjust the position of a wheel with respect to a lower arm of a shoji is provided. For example, in Patent Document 1, a connection pin is provided on a wheel support body that holds two wheels, and this connection pin is inserted through an oblique hole provided in an adjuster and a vertical hole provided in a cover. An adjusting bolt is provided between the cover and the adjuster.

  This door pulley is attached to the inside of the lower arm through a cover. When the adjustment bolt is turned in a state where it is mounted inside the lower rod, the cover and the adjuster move relative to each other, and the position of the connecting pin with respect to the oblique hole changes. For this reason, an adjuster will move to an up-down direction with respect to a cover, and the position of the height direction of a wheel can be adjusted with respect to a lower rod. Further, the wheel support can rotate around the axis of the connecting pin with respect to the cover and the adjuster, and the postures of the two wheels with respect to the lower arm can be changed. Therefore, for example, even when the lower frame is bent, the two wheels are reliably grounded with respect to the rail provided on the lower frame by appropriately adjusting the position in the height direction of the wheel and the posture of the two wheels. And the two wheels can bear the load of the shoji evenly.

Japanese Patent Publication No. 60-7115

  By the way, in the fitting applied to a large opening, since the size of the shoji becomes large, a large load resistance is also required for the applied door. As a method for increasing the load resistance of the door pulley, it is conceivable to increase the number of wheels or increase the diameter of the wheels. However, if the number of wheels is increased or the diameter of the wheels is increased, the exclusive area of the wheels in the wheel support increases, so the position where the connecting pins are arranged, that is, the center of rotation of the wheels relative to the lower arm is significantly limited. Will be. For example, when three wheels are arranged side by side on the wheel support body, the position of the connecting pin must be moved upward to avoid interference with the central wheel, and the dimension along the vertical direction of the door wheel is It will cause a big increase. Although it is conceivable that the function of the connecting pin is also used for the wheel axle, in this case, it becomes difficult to load the wheels evenly and it may cause a problem in terms of load resistance. is there.

  In view of the above circumstances, the present invention provides a door wheel and joinery that can suppress an increase in dimension along the vertical direction and can reliably ground the wheel even when the lower frame is bent to increase the load resistance. The purpose is to do.

  In order to achieve the above object, a door wheel according to the present invention includes a wheel support that rotatably supports a wheel via an axle between a pair of first side walls, and a portion that faces the pair of first side walls. A door body having a second side wall and movably disposed with respect to the wheel support, and the wheel support and the door body are engaged by engaging the first side wall and the second side wall with each other. A wheelchair is disposed on the lower arm of the shoji through the first side wall and the second side wall, each of which is provided with a pair of support protrusions projecting toward the other, the first side wall On the other of the side wall and the second side wall, the wheel support body and the door wheel main body are rotatably supported by engaging with the support protrusions, respectively, and the door wheel main body is moved downward with respect to the wheel support body. A pair that regulates movement A contact engaging surface is provided, the pair of support protrusions are formed at positions of the pair of first side walls or the pair of second side walls facing each other, and the pair of contact engaging surfaces are the pair of first side walls. The one side wall or the pair of second side walls extend in the same direction at an opposite position, and the support for the abutting engagement surface is provided between the wheel support body and the door body. An engagement position defining means for defining the engagement position of the protrusion is provided.

  According to this invention, since the support protrusion is engaged with the abutting engagement surface, the relative rotation center of the door body and the wheel support can be set to a position facing the wheel.

  Further, the present invention is the above-described door wheel, wherein the wheel support includes three wheels having the same outer diameter between the pair of first side walls in a state where the axles are parallel to each other. The support protrusion is provided in a portion that supports and faces the side surface of the wheel disposed in the center on each first side wall, and the door body is formed by an engagement notch formed from the lower surface of the second side wall. And the contact engagement surface is formed on the upper edge of the engagement notch.

  According to this invention, the height position and attitude | position of three wheels can be adjusted centering on the site | part which opposes the side surface of the center wheel.

  Further, according to the present invention, in the door car described above, the engagement position defining means is screwed into the nut block with the nut block supported by the door car body and a tip surface in contact with the wheel support body. An adjustment bolt that changes a relative position along the left-right direction of the wheel support body with respect to the door body when rotated with respect to the nut block, and a left-right direction of the wheel support body with respect to the door body. And a guide mechanism for changing the engagement position of the support protrusion with respect to the contact engagement surface when the relative position is changed.

  According to this invention, the engagement position of the support protrusion with respect to the contact engagement surface can be changed by rotating the adjustment bolt.

  Further, the present invention is the above-described door wheel, wherein one of the first side wall and the second side wall is for regulating at a height position slightly below the support protrusion on each side of the support protrusion. While providing the protrusion, the other of the first side wall and the second side wall is formed with a contact regulating surface at the same height position as the contact engaging surface on both sides of the contact engaging surface, One of the restricting projections and the contact restricting surface are engaged with each other when the wheel support body and the door main body rotate with respect to each other.

  According to the present invention, the rotation range between the wheel support body and the door pulley body is restricted by the contact between the restriction protrusion and the contact restriction surface.

  Moreover, the joinery which concerns on this invention has arrange | positioned one of the above-mentioned door-wheels to the both ends of a lower pallet.

  According to this invention, since the support protrusion is engaged with the abutting engagement surface, it is possible to obtain a fitting in which the relative rotation center between the door pulley main body and the wheel support is set at a position facing the wheel. it can.

  According to the present invention, since the support protrusion is engaged with the contact engagement surface, the relative rotation center of the door body and the wheel support can be set at a position facing the wheel. Even when the frame is bent, the wheel can be reliably grounded. Therefore, the number of wheels can be increased regardless of the position of the relative rotation center of the door body and the wheel support, the diameter of the wheel can be increased, and the increase in dimension along the vertical direction can be suppressed. The load can be increased.

FIG. 1 shows a door cart according to an embodiment of the present invention, and is a side view of a state in which a wheel support body is disposed upward with respect to the door wheel main body. FIG. 2 is a side view showing a state in which the wheel support is moved downward with respect to the main body of the door in the door shown in FIG. FIG. 3 is a cross-sectional view of a main part of the door pulley shown in FIG. 4 is a longitudinal sectional view of the door pulley shown in FIG. FIG. 5 is an exploded perspective view of the door pulley shown in FIG. 6 is a view showing a joinery to which the door cart shown in FIG. 1 is applied. FIG. 7 is a cross-sectional view of a main part of the joinery shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a door pulley and a fitting according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG.1 and FIG.2 shows the doorwheel which is embodiment of this invention. As shown in FIGS. 6 and 7, the door pulley 1 exemplified here is built in the lower arm b of the shoji a, and slides the shoji a to the left and right along the rail C provided on the lower frame B of the opening frame A. The present invention is applied to such a joinery, and includes a wheel support 10 and a door body 20.

  As shown in FIGS. 1 to 5, the wheel support 10 has a pair of plate-like first side walls 11 and a space between the upper ends of the first side walls 11 in a state where these first side walls 11 are parallel to each other. The first upper wall 12 to be connected is integrally formed, and three wheels 30 are provided between the first side walls 11. The 1st side wall 11 comprises the substantially rectangular shape with the length of the left-right direction larger than the up-down direction. The wheel 30 is rotatably supported on the first side wall 11 of the wheel support 10 via both ends of the axle 31 with the axles 31 parallel to each other. The three wheels 30 have the same outer diameter, and are disposed at equal intervals along the left-right direction of the wheel support 10 in a state where the protruding amounts from the lower surface of the first side wall 11 are the same. It is. As can be seen from the figure, the first upper wall 12 of the wheel support 10 is provided with relief openings 12a at portions corresponding to the respective wheels 30 in order to avoid interference with the wheels 30.

  The wheel support 10 has a pressing plate 13 at one end of the pair of first side walls 11, and a pair of guide grooves (guide mechanisms) 14 at two positions between the wheels 30. Have. The pressing plate 13 is a plate-like member attached to the outer surface of a bent portion 11 a formed by bending the end portions of the first side wall 11 so as to overlap each other, and closes the pair of first side walls 11. It is arranged. The guide grooves 14 are narrow openings formed so as to incline in the same direction with respect to the first upper wall 12, and are provided in portions facing each other in the upper part of each first side wall 11. In the present embodiment, each guide groove 14 is provided so as to be gradually inclined downward as it is separated from the pressing plate 13.

  The door body 20 has a pair of plate-like second side walls 21 and a second upper wall 22 that connects between the upper ends of the second side walls 21 in a state where these second side walls 21 are parallel to each other. Formed. The second side wall 21 has a length in the left-right direction that is sufficiently longer than the wheel support 10 and has a mutual interval substantially equal to the width of the wheel support 10, and the wheel support between the second side walls 21. 10 can be movably accommodated.

  Further, the door block body 20 is provided with a nut block 40 between the second side walls 21. The nut block 40 is a plate-like member formed in a size that fits between the second side walls 21, and one end portion of the door main body 20 via the block support body 41 in a state in which movement in the left-right direction is restricted. Are arranged. The nut block 40 is provided with an adjusting bolt 42. The adjustment bolt 42 is screwed into a screw hole 40 a formed in the nut block 40 and extends along the left-right direction of the door body 20. When the adjustment bolt 42 is rotated with respect to the nut block 40, the adjustment bolt 42 extends from the nut block 40. It is possible to change the protruding amount of the tip surface of the. The block support 41 is provided with an adjustment opening 41 a for inserting a tool into a portion located on the extension of the adjustment bolt 42.

  In the door body 20 having the above-described configuration, the wheel is interposed between the second side walls 21 so that the pressing plate 13 faces the nut block 40 and the first upper wall 12 faces the second upper wall 22. A support 10 is arranged. Further, by holding a guide pin (guide mechanism) 50 between the second side walls 21 while penetrating the guide groove 14 formed in the first side wall 11, the door body 20 and the wheel support 10 are integrated as a unit. Is done. The guide pin 50 has a columnar shape having an outer diameter slightly smaller than the width of the guide groove 14, and can move slightly along the direction intersecting the length of the guide groove 14.

  On the other hand, in the door 1 of the present embodiment, a pair of support protrusions 15 are provided on the wheel support body 10, while a pair of contact engagement surfaces 23 are provided on the door wheel main body 20. The support protrusions 15 protrude from the outer surface at the height position facing the side surface of the wheel 30 disposed at the center of the pair of first side walls 11 toward the second side wall 21, and are integrated with the first side wall 11. Is formed. The support protrusion 15 has a semicircular shape when viewed from the side, and is provided on the first side wall 11 in a state where each arc is inclined with respect to the first upper wall 12. Specifically, the support protrusions 15 are formed on the opposing portions of the first side wall 11 so as to be gradually inclined away from the pressing plate 13 toward the upper side. The contact engagement surface 23 is formed on the upper edge of the engagement notch 24 formed from the lower surface of the second side wall 21 and is inclined along the inclination direction of the guide groove 14 formed in the wheel support 10. . The length of the abutting engagement surface 23 is a dimension that allows the movement of the support protrusion 15 due to the relative movement between the wheel support 10 and the door body 20 when the guide pin 50 moves along the guide groove 14. It is set.

  Reference numeral 16 in the figure is a restricting protrusion provided at a height position facing the side surfaces of the wheel 30 disposed on both sides of the wheel support 10. These restricting protrusions 16 are formed in the same shape as the support protrusions 15, but are arranged at positions where the height is slightly lower than the support protrusions 15. Reference numeral 25 is a restriction notch formed at positions on both sides of the engagement notch 24 in the door body 20. These restriction notches 25 are formed in the same shape and the same dimensions as the engagement notches 24, and constitute a contact restriction surface 26 on the upper edge thereof. The contact restriction surface 26 is formed at the same height as the contact engagement surface 23 with the same inclination angle, and the first upper wall 12 of the wheel support 10 and the second upper wall 22 of the door body 20 are connected to each other. When arranged parallel to each other, each of the restricting projections 16 is provided so as to be slightly separated from the upper part of the semicircular arc shape. Further, the length of the contact restriction surface 26 can allow the restriction protrusion 16 to move with the relative movement between the wheel support 10 and the door body 20 when the guide pin 50 moves along the guide groove 14. The dimensions are set.

  The door 1 configured as described above is attached to the lower arm b of the shoji a through the door body 20 as shown in FIGS. The position where the door pulley 1 is attached is, for example, both end portions of the lower arm b. Each of the door carts 1 is arranged in such a manner that the block supports 41 face each other, and the adjustment bolt 42 is inserted by inserting a tool through the adjustment opening 41a while being attached to the lower rod b. It can be rotated.

  Now, when the tip of the adjustment bolt 42 is in the most retracted state and grounded to the rail C via the wheel 30, the door body 20 is moved by the weight of the shoji a and the weight of the door body 20 as shown in FIG. The wheel support 10 is moved downward with respect to the wheel support 10 and is supported by the wheel support 10 in a state where the left and right support protrusions 15 are respectively engaged with the contact engagement surfaces 23. At this time, the guide pin 50 is located at the lower end of the guide groove 14, and the wheel support 10 is in a state where the pressing plate 13 is disposed at a position closest to the nut block 40 of the door body 20.

  From this state, when the adjustment bolt 42 is rotated to increase the protruding amount of the front end surface from the nut block 40, the front end surface of the adjustment bolt 42 presses the pressing plate 13, so that the wheel support body is supported against the door body 20. 10 moves in a direction away from the nut block 40 along the left-right direction. When the wheel support body 10 moves in the direction away from the nut block 40 along the left-right direction, the guide pin 50 is guided upward along the inclined guide groove 14. Moves relatively upward, and the dimension from the axle 31 of the wheel 30 to the second upper wall 22 of the door body 20 can be enlarged. On the contrary, if the protrusion amount of the front end surface of the adjustment bolt 42 is decreased, the door body 20 is moved downward with respect to the wheel support 10 again, and from the axle 31 of the wheel 30 to the second upper wall 22 of the door body 20. The dimensions can be reduced. Therefore, if the adjustment bolt 42 is appropriately operated, the amount of protrusion of the wheel 30 from the lower surface of the lower rod b can be changed.

  During these periods, even when the height position of the door main body 20 is changed with respect to the wheel support body 10, the upper part of the support protrusion 15 that is formed in an arc shape always engages the contact engagement surface 23, The state where 20 is supported by the wheel support 10 is maintained. In addition, the guide pin 50 is slightly movable along the direction intersecting the length of the guide groove 14, and the two restricting protrusions 16 provided on the wheel support 10 are separated from the contact restricting surface 26. It is arranged at the position. That is, in the above-described door roller 1, until one of the guide pins 50 contacts the guide groove 14, or until one of the restricting protrusions 16 contacts the contact restricting surface 26. The door main body 20 is rotatable with respect to the wheel support 10 around the engagement point between the support protrusion 15 and the contact engagement surface 23, and the posture of the wheel support 10 is changed with respect to the door main body 20. be able to.

  Therefore, if the wheel 30 is brought into contact with the rail C in a state where the protrusion amount of the wheel 30 from the lower surface of the lower rod b is adjusted, the door body 20 is appropriately rotated with respect to the wheel support 10, and each door 1 Thus, all the three wheels 30 are surely grounded to the rail C, so that the three wheels 30 can bear the load of the shoji a evenly. And since the support protrusion 15 provided in each 1st side wall 11 of the wheel support body 10 is made to engage with the contact engagement surface 23 of the doorwheel main body 20, between the doorwheel main body 20 and the wheel support body 10 is used. The center of relative rotation can be set at a position facing the wheel 30 disposed in the center, and the load resistance can be increased while suppressing an increase in dimension along the vertical direction. Furthermore, since the relative rotation center of the door body 20 and the wheel support 10 is provided separately from the axle 31, the wheel support 10 has a wheel even in a state where the door wheel body 20 and the wheel support 10 are separated. 30 will be in the supported state. Therefore, assembly work and maintenance work can be facilitated.

  In the above-described embodiment, the support protrusion 15 is provided on the wheel support body 10 and the contact engagement surface 23 is provided on the door wheel main body 20, but the contact engagement surface is provided on the wheel support body. And a support projection may be provided on the door pulley body. In this case, the contact / engagement surface of the wheel support body is a surface facing upward, and both are engaged with each other with the support protrusion being placed from above.

  In the above-described embodiment, the guide groove 14 is provided in the wheel support 10 as the guide mechanism, while the guide pin 50 is provided in the door cart body 20. However, the guide pin is provided in the wheel support body, A guide groove may be provided.

  Furthermore, in embodiment mentioned above, what provided the three wheel 30 in the wheel support body 10 was illustrated, However, The number of the wheel 30 does not necessarily need to be three, and if there are two or more, four or more It does not matter.

  Furthermore, in the above-described embodiment, when the wheel support 10 and the door body 20 are rotated with each other, the restricting protrusion 16 and the contact restricting surface 26 are in contact with each other. The body 10 and the door pulley main body 20 do not rotate more than necessary, and the work when the shoji a is built into the opening frame A can be facilitated. In addition, when an impact is applied to the wheel 30 or the wheel support body 10 when the shoji a is installed in the opening frame A, the support protrusion 15 and the contact engagement surface 23 are not only in contact with each other. However, it is advantageous in terms of impact resistance, such that the impact force can be received by the contact between the one restricting projection 16 and the contact restricting surface 26, and there is no possibility of causing damage.

DESCRIPTION OF SYMBOLS 1 Door pulley 10 Wheel support body 11 1st side wall 12 1st upper wall 13 Pressing plate 14 Guide groove 15 Support protrusion 16 Restriction protrusion 20 Door wheel main body 21 2nd side wall 22 2nd upper wall 23 Contact engagement surface 24 Engagement Combined cutout 25 Restriction cutout 26 Contact restriction surface 30 Wheel 31 Axle 40 Nut block 42 Adjustment bolt 50 Guide pin A Opening frame B Lower frame C Rail a Shoji b Lower arm

Claims (5)

A wheel support that rotatably supports a wheel via an axle between a pair of first side walls;
And a door body having a second side wall at a portion facing the pair of first side walls and movably disposed with respect to the wheel support body, the first side wall and the second side wall being engaged with each other. A wheelchair in which wheels are arranged on the lower arm of a shoji through the wheel support and the doorwheel main body,
One of the first side wall and the second side wall is provided with a pair of support protrusions that protrude toward the other, and the other of the first side wall and the second side wall is provided with the support protrusion, respectively. A pair of abutting engagement surfaces for supporting the wheel support body and the door wheel main body so as to be rotatable with each other by engaging and restricting the downward movement of the wheel wheel body relative to the wheel support body are provided,
The pair of support protrusions are formed at positions of the pair of first side walls or the pair of second side walls facing each other, and the pair of contact engagement surfaces are the pair of first side walls or the pair of first side walls. Inclining and extending in the same direction at the opposite positions of the two side walls,
Furthermore, an engagement position defining means for defining an engagement position of the support protrusion with respect to the contact engagement surface is provided between the wheel support and the door body. The wheel support body supports three wheels having the same outer diameter between the pair of first side walls in parallel with each other in a state where the axles are parallel to each other. The support protrusion is provided at a portion facing the side surface of the wheel disposed in
2. The door wheel according to claim 1, wherein the door body has an engagement notch formed from a lower surface of the second side wall, and the contact engagement surface is formed on an upper edge of the engagement notch. . The engagement position defining means includes
A nut block supported by the door pulley body;
When the front end surface is screwed into the nut block in contact with the wheel support and rotates relative to the nut block, the relative position along the left-right direction of the wheel support relative to the door body is changed. Adjustment bolts,
A guide mechanism for changing an engagement position of the support protrusion with respect to the contact engagement surface when a relative position along the left-right direction of the wheel support body is changed with respect to the door wheel main body. The door cart according to claim 1.   One of the first side wall and the second side wall is provided with a restricting protrusion at a height position slightly below the support protrusion on each side of the support protrusion. A contact regulating surface is formed on the other side of the second side wall at the same height as the contact engagement surface on both sides of the contact engagement surface, and the wheel support body and the door body are rotated relative to each other. The door roller according to claim 1, wherein one of the restricting protrusions and the contact restricting surface are engaged with each other.   A joinery characterized in that the door wheel according to any one of claims 1 to 4 is disposed at both ends of the lower arm.

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