JP3907249B2 - Sliding door structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field related to a sliding door structure having a structure for preventing rattling caused by a gap between the sliding door and the Kamoi rail.
[0002]
[Prior art]
In general, the sliding door is a mechanism that is opened and closed in the left-right direction by sliding. Therefore, it is difficult to smoothly slide the sliding door unless a clearance is provided in advance between the upper end of the sliding door and the duck. . For this reason, the problem that the sliding doors are erratic due to the gap is inevitable. This rattling not only prevents the sliding door from being opened and closed smoothly, but also causes noise during opening and closing.
[0003]
As a structure for preventing the sliding of such a sliding door, a structure shown in Japanese Utility Model Publication No. 61-170679 has been proposed. In this proposal, as shown in FIG. 12, a slide plate c slidably contacting the upper surface of the sliding door b is supported by springs d, d,... The sliding plate c is urged downward by force to press the upper end surface of the sliding door b, thereby preventing the sliding door b from rattling.
[0004]
In addition, as shown in Japanese Patent Application Laid-Open No. 5-113071, the door is urged upward by a spring at the upper end of the sliding door so as to be attached and supported, and this door is engaged with the rail on the lower surface of the Kamoi. In addition, as shown in Utility Model Registration No. 3021703, there is known a structure in which a block body whose front and rear side surfaces are in pressure contact with both side surfaces of the rail groove on the lower surface of the Kamoi is known at the upper end of the sliding door.
[0005]
[Problems to be solved by the invention]
However, in the structure of the first conventional example (Japanese Utility Model Publication No. 61-170679), the sliding door b is pressed only downward by the biasing force of the springs d, d,. However, on the other hand, there is a drawback that the sliding of the sliding door b is hindered. Further, rattling of the sliding door b in the front-rear direction (left-right direction with respect to the sliding direction) at the time of opening and closing cannot be suppressed.
[0006]
Further, in the second conventional example (Japanese Patent Laid-Open No. 5-113071), smooth sliding of the sliding door and prevention of rattling in the vertical direction can be obtained, but it is difficult to prevent shaking of the sliding door in the longitudinal direction. It is.
[0007]
Further, in the third conventional example (utility model registration No. 3021703), the back and forth rattling of the sliding door can be prevented, but the up and down shakiness cannot be prevented.
[0008]
The present invention has been made in view of such various points, and an object of the present invention is to improve the structure of the sliding door so as to realize smooth sliding of the sliding door and to prevent rattling in both the vertical and front-rear directions. It is to be able to suppress at the same time.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a rotatable roller is provided on the sliding door side in a state of being biased upward, and a pair of conical surfaces having a tapered tapered cross section are formed on the outer peripheral surface of the roller. A rail groove that is narrower than the width of the roller is formed in the head, and the roller is rolled while contacting the conical surface of the roller to the opening side corner of the rail groove. I tried to suppress the rattling of both.
[0010]
Specifically, in the first aspect of the invention, in the sliding door structure that opens and closes by sliding the sliding door in the left-right direction between the upper duck and the lower sill, a guide is attached and fixed to the upper end of the sliding door. The guide includes a guide body that is open upward, a roller cover that is supported by the guide body so as to be movable up and down, a roller that is rotatably supported by the roller cover via a roller shaft in the horizontal front-rear direction, Urging means for urging and urging the roller cover in a direction in which the roller protrudes from the upper surface of the guide body.
[0011]
On the other hand, a rail groove having a width smaller than the width of the roller and guided while the roller rolls is provided on the lower surface of the head. Then, the outer periphery of the roller, is a tapered cross section which is inclined radially outwardly in the widthwise center side and the conical surface of each can contact pair on the opening side corner portions of the rail groove provided, urging the The conical surface of the roller is configured to abut against the opening side corner of the rail groove in a pressed state by the biasing means .
[0012]
With this configuration, the roller is urged by the urging force applied to the roller cover by the urging means so that the roller protrudes from the upper surface of the guide body. This allows the sliding door to slide smoothly and open and close.
[0013]
The width of the rail groove is smaller than the width of the roller, and a pair of conical surfaces are formed on the outer periphery of the roller. Therefore, when the roller is biased upward by the biasing means, Each of the conical surfaces is in contact with the opening side corner of the rail groove in a pressed state. Since both the conical surfaces of this roller are tapered in cross section that inclines toward the center in the width direction toward the outer side in the radial direction of the roller, the pressing force with which both conical surfaces respectively press the opening side corners of the rail groove is upward. The component force is divided into the horizontal force and the horizontal force. The sliding doors are pressed and supported in the up-down direction and the front-rear direction by the component force on both the conical surfaces, and the rattling of the sliding doors in both directions can be suppressed at the same time.
[0014]
In addition, since the urging force of the roller by the urging means is transmitted not only in the upward direction but also in the horizontal front-and-rear direction due to the conical surface of the outer periphery of the roller in this way, a force to move the sliding door in the front-rear direction is applied temporarily. When the upper end moves in the front-rear direction, the pressing force of one conical surface becomes larger than that of the other conical surface and the balance between the two is lost, so the sliding door balances the pressing force by both conical surfaces by the urging force. So that it always automatically returns to the center in the front-rear direction. For this reason, the sliding door can always be slid stably.
[0015]
According to the second aspect of the present invention, the guide body is provided with a guide shaft in the horizontal front-rear direction, and the roller cover is configured to be movable up and down by being swingably supported by the guide shaft. As described above, since the roller rotates around the guide shaft and moves up and down, the roller is moved up and down smoothly.
[0016]
According to a third aspect of the present invention, a projecting portion is provided between the conical surfaces of the outer periphery of the roller so as to project over the entire circumference of the roller and to be fitted in the rail groove of the Kamoi, on the radially outer side of the roller from the inclined surface.
[0017]
By fitting the protrusions on the outer periphery of the roller into the rail groove of the Kamoi, even if a large force is applied in the horizontal front-rear direction to the sliding door, the roller will come out of a so-called derailed state in which the roller comes off the rail groove of the Kamoi. Can be effectively prevented.
[0018]
According to a fourth aspect of the present invention, the duck part having a rail groove at the bottom and fitting the upper edge of the sliding door is provided in the head. In this way, the upper edge of the sliding door is fitted into the digging portion and locked in the front-rear direction, so that it is effective that the sliding door itself can be completely removed from the duck even if the roller comes off the rail groove. Can be prevented. In addition, the upper end edge of the sliding door is concealed in the digging portion together with the roller so that it cannot be seen from the outside, and the appearance appearance between the sliding door upper end and the duck can be improved.
[0019]
According to the invention of claim 5, a notch formed by notching at substantially the same inclination angle as the conical surface of the roller is provided in the opening side corner of the rail groove. As a result, the opening side corners of the rail grooves that abut against each other and the conical surface of the roller are in line contact or surface contact, and the backlash of both the vertical and front-back directions of the sliding door can be further reduced. .
[0020]
According to a sixth aspect of the present invention, in the sliding door structure of the second aspect, the urging means is bent so as to be positioned on an arc line centering on the guide shaft across the lower end portion of the roller cover and the inner surface of the guide body. Coiled springs are used. That is, the roller and the roller cover make a circular motion around the guide shaft, but since the spring is arranged so as to correspond to the locus of this circular motion, a long contraction stroke of the coil spring is ensured, and the roller guide The circular motion around the axis can be performed smoothly.
[0021]
In invention of Claim 7, in the sliding door structure in any one of Claims 1-6, a sill rail is provided in the upper surface of a sill, and it engages with the said sill rail at the lower end part of a sliding door, and is guided while rolling. A sill roller is rotatably supported. If it carries out like this, the movement at the time of opening and closing of a sliding door can be performed still more smoothly.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
FIGS. 6-8 shows the sliding door structure which concerns on Embodiment 1 of this invention, 1 is a sliding door frame, The silt 2 which has the rail 3 (Kamoi rail) in the upper part has the rail (sill rail) in the lower part. (Both not shown) are provided.
[0023]
Although not shown, 10 is a sliding door, and a known sill roller (door) that rolls while being engaged with the sill rail is rotatably supported at both ends of the lower end of the sliding door. On the other hand, the upper end of the sliding door 10 is slidably engaged with the Kamoi rail 3, and the sliding door 10 is slid in the left-right direction within the sliding door frame 1 to be opened and closed.
[0024]
Guides 14 and 14 (only the left one is shown) for guiding the upper end of the sliding door 10 along the head rail 3 are attached and fixed to both ends of the upper end of the sliding door 10 in the left-right direction. In other words, at the corners of the left and right end portions of the sliding door 10, the guide mounting portion 12 is formed by cutting out the intermediate portion in the front-rear direction (thickness direction) from the side surface to the upper surface of the sliding door 10 in a rectangular shape over a predetermined thickness. The guide 14 is fitted and fixed to the mounting portion 12.
[0025]
The guide 14 includes, for example, a resin rectangular box-shaped guide body 15 opened upward, and the guide body 15 has a pair of side walls 15a and 15b facing in the left-right direction (moving direction of the sliding door 10). The outer surface of the outer side wall 15a located outside the sliding door 10 is fitted to the guide mounting portion 12 such that the outer surface of the outer side wall 15a is flush with the lateral side surface of the sliding door 10 and the upper surface of the guide body 15 is flush with the upper surface of the sliding door 10. Has been.
[0026]
As shown in detail in FIGS. 1 to 4, a screw insertion hole 16 is formed in the lower outer surface of the outer side wall 15 a of the guide main body 15 so as to pass through the bottom wall of the guide main body 15 to the outer surface of the inner side wall 15 b. Further, a fixing bracket 17 made of an L-shaped plate is integrally attached and fixed to the upper end portion of the inner side wall 15b by engagement or joining at the vertical portion 17a. The horizontal portion 17b of the fixing bracket 17 is After projecting from the inside of the guide body 15 to the outside, it extends on the upper end surface of the sliding door 10 in the horizontal left-right direction so as to leave the guide body 15, and two screw holes 18, 18 are formed through the horizontal portion 17 b. Then, as shown in FIG. 8, a long-sized screw 19 is inserted into the screw insertion hole 16, and the distal end portion thereof is screwed and fastened to the inner side surface of the guide mounting portion 12 in the sliding door 10. The guide body 15 (guide 14) is attached and fixed to the sliding door 10 by inserting the screw 20 into the hole 18 and screwing and fastening it to the upper end surface of the sliding door 10.
[0027]
A guide shaft 21 extending in the horizontal front-rear direction in a state of being hung on both side walls in the front-rear direction is disposed and fixed near the outer side wall 15 a at the upper end portion in the guide body 15. The end of 22 is supported so as to be able to swing within a vertical plane. The roller cover 22 has a substantially bag shape opened upward, and a substantially disk-like roller 23 having a width Wr (see FIG. 5) of, for example, 10 to 15 mm is provided at the upper end thereof. Is supported by a roller shaft 27 in the horizontal front-rear direction so as to be rotatable. With this structure, the roller 23 is supported by the guide body 15 through the roller cover 22 so as to be swingable around the guide shaft 21, that is, can be moved up and down. The roller 23 is rotated counterclockwise around the guide shaft 21 in FIG. When it rotates in the rotating direction, it protrudes from the guide body 15, while it is immersed in the guide body 15 when it rotates in the clockwise direction. The roller 23 swings in the vertical direction as described above, but is supported so as not to move relative to the guide body 15 in the front-rear direction.
[0028]
A cylindrical spring stopper 22a is integrally projected on the outer surface of the lower end portion of the roller cover 22. On the other hand, a similar spring stopper 15c is integrally projected at the lower end of the outer side wall 15a facing the inner surface of the guide body 15. A coil spring 28 as a compression spring is bent between the spring stoppers 15c and 22a so as to be substantially positioned on the arc line L with the guide shaft 21 as the center, and is compressed. Each end of the coil spring 28 is externally fitted and locked to the spring stoppers 15c and 22a, and the roller cover 22 is projected by the coil spring 28 so that the roller 23 protrudes from the upper surface of the guide body 15. (Roller 23) is urged to rotate.
[0029]
Furthermore, as shown in FIG. 7, the duck rail 3 of the sliding door frame 1 has a two-stage digging structure. In other words, the Kamoi rail 3 includes a dug portion 4 formed on the lower surface of the Kamoi 2 and made of a concave groove that loosely fits the upper edge of the sliding door 10. Is recessed. The rail groove 5 is guided while the roller 23 in the guide 14 on the sliding door 10 side rolls, and the groove width Wt is set smaller than the width Wr of the roller 23 (Wt <Wr).
[0030]
On the other hand, as shown in detail in FIG. 5, the roller 23 is a Y-type roller having an outer peripheral portion formed in a substantially Y-shaped cross section. That is, on the outer periphery of the roller 23, a ring portion 24 having a rectangular cross section as a protruding portion that protrudes outward in the radial direction continuously over the entire periphery of the roller 23 at the center in the width direction, and the base of this ring portion 24 A taper-shaped cross section that is continuous on both the front and rear sides of the (small-diameter end) and is inclined at a predetermined angle θ (for example, θ = 45 °) toward the center in the width direction (ring portion 24 side) toward the outer side in the radial direction of the roller 23. A pair of conical surfaces 25, 25 are formed. A width Wn of the ring portion 24 is smaller than a width Wt of the rail groove 5 of the head 2 (Wn <Wt), and the ring portion 24 is fitted in the rail groove 5. The conical surfaces 25 and 25 of the roller 23 are in contact with the opening side corners 6 and 6 of the rail groove 5, respectively.
[0031]
In the figure, reference numeral 15d denotes a stopper projecting from the upper end of the outer side wall 15a of the inner surface of the guide main body 15, which regulates the lower end position of the roller 23 (roller cover 22).
[0032]
Therefore, in the sliding door structure of this embodiment, when assembling the sliding door 10 to the sliding door frame 1, the sliding door 10 is lifted and its upper end is engaged with the Kamoi rail 3, and then the lower end of the sliding door 10, as in a normal sliding door. What is necessary is just to mount the threshold roller of a part on a threshold rail, and to engage with it. At that time, as the sliding door 10 is lifted, the upper end of the sliding door 10 is inserted into the dug 4 of the Kamoi rail 3, and the roller 23 in the guide 14 is pushed back into the guide body 15 against the biasing force of the coil spring 28. However, the ring portion 24 is fitted into the rail groove 5 on the bottom surface of the digging portion 4.
[0033]
When the sliding door 10 is moved left and right for opening and closing after assembling in this way, the sill roller at its lower end rolls on the sill rail, and the upper end slides on the sill rail 3, The sliding door 10 is opened and closed.
[0034]
In this case, since the roller 23 is urged by the coil spring 28 so as to protrude from the upper surface of the guide body 15 via the roller cover 22, the roller 23 is constantly in contact with the Kamoi rail 3 when the sliding door 10 is opened and closed. It engages with the rail groove 5 and rolls while being guided by the rail groove 5. The sliding door 10 can be smoothly opened and closed by the guide action while the roller 23 is rolling. In addition, since the sliding roller 10 is provided at the lower end of the sliding door 10 while being engaged with the sill rail on the upper surface of the sill and rolling, the sliding door 10 can be opened and closed more smoothly.
[0035]
Further, the width Wt of the rail groove 5 is smaller than the width Wr of the roller 23, and a pair of conical surfaces 25, 25 are formed on the outer periphery of the roller 23. In a state in which the roller 23 rotates counterclockwise in FIG. 8 and is biased upward, the conical surfaces 25 and 25 of the roller 23 are pressed against the opening side corners 6 and 6 of the rail groove 5 respectively. Abut. Since the conical surfaces 25 and 25 of the roller 23 are tapered in cross section that inclines toward the center in the width direction toward the outer side in the radial direction of the roller 23, as shown in FIG. The pressing forces F and F that press the opening side corners 6 and 6 of the groove 5 are divided into a component force F1 upward and a component force F2 in the horizontal front-rear direction. The sliding door 10 is pressed and supported in the up and down direction and the front and rear direction by the component forces F1 and F2 with respect to the both conical surfaces 25 and 25, and the backlash in both the up and down direction and the front and rear direction of the sliding door 10 can be suppressed simultaneously. .
[0036]
Further, since the urging force of the roller 23 by the coil spring 28 is transmitted not only in the upward direction but also in the horizontal front-rear direction by the conical surfaces 25 and 25 on the outer periphery of the roller 23 as described above, as shown in FIG. Even if a force for moving in the front-rear direction is applied to the upper end portion of the sliding door 10 in the front-rear direction, the pressing force F of the one conical surface 25 becomes larger than the pressing force F of the other conical surface 25. Is out of balance. For this reason, the sliding door 10 always automatically returns to the center in the front-rear direction so that the pressing forces F, F by the conical surfaces 25, 25 are balanced by the urging force, and as a result, the sliding door 10 is always stabilized. Can be slid.
[0037]
Further, a ring portion 24 having a larger diameter is formed between the conical surfaces 25, 25 on the outer periphery of the roller 23, and this ring portion 24 is fitted in the rail groove 5 of the Kamoi rail 3, so that the sliding door Even if a force in the horizontal front-rear direction is applied from the surface 10, as long as the ring portion 24 is fitted to the rail groove 5, the roller 23 does not come off the rail groove 5.
[0038]
Moreover, since the said Kamoi rail 3 is a two-stage structure which consists of the digging part 4 which fits the upper-end edge part of the sliding door 10, and the rail groove | channel 5 formed in the bottom face, the upper-end edge part of the sliding door 10 is dug. It can be locked in the front-rear direction by fitting into the recessed portion 4, and even if the roller 23 is removed from the rail groove 5, the sliding door 10 itself can be prevented from being completely removed from the Kamoi rail 3. Moreover, since the upper end edge part of the sliding door 10 is concealed in the digging part 4 with the roller 23, the external appearance appearance between the upper end part of the sliding door 10 and the Kamoi 2 can be improved.
[0039]
Further, the coil spring 28 is fitted between the lower end portion of the roller 23 cover 22 and the inner surface of the guide body 15 and is bent so as to be positioned on an arc line L centering on the guide shaft 21. Therefore, the coil spring 28 is arranged corresponding to the locus of the circular motion around the guide shaft 21 of the roller 23, and the contraction stroke can be secured long, and the circular motion around the guide shaft 21 of the roller 23 is smooth. Can be done.
[0040]
Moreover, the roller cover 22 that pivotally supports the roller 23 is supported by the guide shaft 21 of the guide body 15 so as to be able to swing, so that the smooth movement of the roller 23 can be ensured.
[0041]
(Embodiment 2)
FIG. 10 shows a second embodiment of the present invention (note that the same parts as those in FIGS. 1 to 4 and FIGS. 6 to 8 are denoted by the same reference numerals and detailed description thereof is omitted).
[0042]
In this embodiment, notches 7 and 7 are formed at the opening-side corners 6 and 6 of the rail groove 5 in the Kamoi rail 3 and are notched at substantially the same inclination angle as the conical surfaces 25 and 25 of the roller 23. The conical surfaces 25 and 25 of the roller 23 are in contact with the notches 7 and 7, respectively. Other configurations are the same as those of the first embodiment.
[0043]
Therefore, in this embodiment, when the conical surfaces 25, 25 of the roller 23 come into contact with the opening-side corners 6, 6 of the rail groove 5, the notches formed in the opening-side corners 6, 6 of the rail groove 5, respectively. Since the portions 7 and 7 have substantially the same inclination angle as the conical surfaces 25 and 25 of the roller 23, the opening side corner portions 6 and 6 of the rail groove 5 and the conical surfaces 25 and 25 of the roller 23 are in line contact or surface contact. Therefore, the backlash of both the up-down direction and the front-back direction of the sliding door 10 can be further reduced.
[0044]
(Embodiment 3)
FIG. 11 shows the third embodiment. In the first embodiment, the roller 23 of the guide 14 is a Y-type roller, whereas the roller 23 is a V-type roller whose outer peripheral portion is formed in a substantially V-shaped cross section. Is.
[0045]
That is, in this embodiment, the ring portion 24 as in the first embodiment is not provided on the outer periphery of the ring portion 24, and both the conical surfaces 25, 25 are directly continuous with each other at the center in the width direction of the roller 23. Other configurations are the same as those of the first embodiment.
[0046]
In this embodiment, it is not possible to expect a reliable effect of preventing the roller 23 from being removed, but the same effects as in the first embodiment can be obtained except for that.
[0047]
In each of the above-described embodiments, the coil spring 28 positioned on the arc line L centered on the guide shaft 21 is used as the biasing means of the roller 23 in the guide 14, but other springs may be used. For example, a torsion spring attached around the guide shaft 21 may be used. However, in order to smoothly rotate the roller 23, it is preferable to use the coil spring 28 as in the embodiment.
[0048]
Moreover, in the said embodiment, although the Kamoi rail 3 is made into the two-stage structure of the dug part 4 and the rail groove 5 of the bottom face, the dug part 4 is not necessarily required and the improvement of appearance is unnecessary. May have a structure in which only the rail groove 5 is formed in the Kamoi 2. Further, the rail groove 5 does not need to be constituted by a concave groove formed on the lower surface of the Kamoi 2, and may be a structure in which a rail having a U-shaped cross section is arranged and fixed to the lower surface of the Kamoi 2 so as to open downward.
[0049]
Further, in the first and second embodiments, as the protruding portion on the outer periphery of the roller 23, the ring portion 24 having a rectangular cross section that continuously protrudes over the entire circumference of the roller 23 is provided, but this protruding portion is not continuous. May be discontinuously protruding.
[0050]
【The invention's effect】
As described above, according to the first aspect of the present invention, a guide having a guide body opened upward is attached and fixed to the upper end portion of the sliding door, and a roller cover is supported on the guide body so as to be movable up and down. The cover is provided with a biasing means for rotatably supporting the roller via a horizontal front / rear roller shaft and for biasing the roller cover so that the roller protrudes from the upper surface of the guide body. A rail groove having a smaller width than the roller and guided while the roller rolls is provided, and the outer periphery of the roller is tapered in cross-section and inclined toward the center in the width direction toward the outer side in the radial direction. the conical surface of the pair each capable of contacting the side corners is provided, by which is adapted to abut the pressing state to the opening side corner portions of the rail groove, respectively, by the urging of the biasing means these conical surfaces, the sliding door The roller is rolled while being guided by the rail groove of the Kamoi at the time of opening and closing to smooth and stabilize the opening and closing operation of the sliding door, and upward by the pressing force with which the conical surface of the roller presses the opening side corner of the rail groove In addition, the sliding door can be pressed and supported in the vertical and forward / backward directions by both component forces in the horizontal front / rear direction, and rattling of the sliding door in both directions can be prevented.
[0051]
According to the second aspect of the present invention, the guide body is provided with a horizontal front-rear direction guide shaft, and the roller cover is swingably supported by the guide shaft so as to be able to move up and down. Can do.
[0052]
According to the invention of claim 3, by providing the protrusions that fit into the rail grooves between the conical surfaces on the outer periphery of the roller, it is possible to effectively prevent the roller from coming off from the rail grooves of the duck.
[0053]
According to invention of Claim 4, while providing the dug part which fits a sliding door upper-end edge in a duck, it can prevent that the sliding door itself remove | deviates completely from a duck, and the upper-end edge of a sliding door with a roller It is possible to improve the appearance of the appearance between the upper end of the sliding door and the duck by concealing it in the dug.
[0054]
According to the fifth aspect of the present invention, by providing the opening side corner of the rail groove with a notch portion having substantially the same inclination angle as that of the conical surface of the roller, the sliding door can be further rattled both vertically and backwardly. Reduction can be achieved.
[0055]
According to the invention of claim 6, the biasing means is a coil spring that is bent and contracted so as to be positioned on an arc line centering on the guide shaft across the lower end portion of the roller cover and the inner surface of the guide body. As a result, the circular movement of the roller can be performed smoothly, and the operational stability and reliability can be improved.
[0056]
According to the invention of claim 7, the sill rail is provided on the upper surface of the sill, while the lower end of the sliding door is rotatably supported by the sill roller guided while being engaged with the sill rail, Further smoothing of the opening and closing movement can be achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along the line II of FIG.
FIG. 2 is a front view of a guide according to the first embodiment of the present invention.
FIG. 3 is a plan view of the guide.
FIG. 4 is a side view of the guide.
FIG. 5 is an enlarged side view showing a state where a roller is fitted in a rail groove.
FIG. 6 is a front view showing a use state of the guide.
FIG. 7 is a side view showing a usage state of the guide.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a cross-sectional view of a principal part showing a state where the upper end of the sliding door is displaced in the front-rear direction.
FIG. 10 is a cross-sectional view of a main part showing Embodiment 2 of the present invention.
FIG. 11 is a view corresponding to FIG. 4 showing Embodiment 3 of the present invention.
FIG. 12 is a cross-sectional view of a main part showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sliding door frame 2 Kamoi 3 Kamoi rail 4 Digging part 5 Rail groove Wt Rail groove width 6 Opening side corner part 7 Notch part 10 Sliding door 14 Guide 15 Guide main body 21 Guide shaft 22 Roller cover 23 Roller Wr Roller width 24 Ring part (protrusion) Part)
Wn Ring width 25 Conical surface 27 Roller shaft 28 Coil spring L Arc line

Claims (7)

In the sliding door structure that opens and closes by sliding the sliding door left and right between the upper duck and the lower sill,
A guide is attached and fixed to the upper end of the sliding door,
The guide has a guide body opened upward;
A roller cover supported by the guide body so as to be movable up and down;
A roller rotatably supported by the roller cover via a roller shaft in the horizontal front-rear direction;
Urging means for urging the roller cover in a direction in which the roller protrudes from the upper surface of the guide body,
The lower surface of the head is provided with a rail groove having a width smaller than the width of the roller and guided while the roller rolls.
The outer periphery of the roller is provided with a pair of conical surfaces that are tapered in cross-section and inclined toward the center in the width direction toward the outer side in the radial direction, and can contact each of the opening-side corners of the rail groove ,
A sliding door structure characterized in that the conical surface of the roller abuts against the opening side corner of the rail groove in a pressed state by the urging force of the urging means. In the sliding door structure of Claim 1,
The guide body is provided with a horizontal front / rear guide shaft,
A sliding door structure characterized in that the roller cover can be moved up and down by being swingably supported by the guide shaft. In the sliding door structure according to claim 1 or 2,
Sliding doors characterized in that, between the conical surfaces of the outer periphery of the roller, a protruding portion is provided on the outer side in the radial direction of the roller from the inclined surface so as to protrude over the entire periphery of the roller and fit into the rail groove of the Kamoi. Construction. In the sliding door structure in any one of Claims 1-3,
A sliding door structure having a rail groove at the bottom and a digging portion for fitting the upper edge of the sliding door. In the sliding door structure in any one of Claims 1-4,
A sliding door structure characterized in that a notch formed by notching at the same angle of inclination as the conical surface of the roller is provided at an opening side corner of the rail groove. In the sliding door structure of claim 2,
The urging means is a coiled spring that is bent and contracted so as to be positioned on an arc line centering on the guide shaft across the lower end of the roller cover and the inner surface of the guide body. Construction. In the sliding door structure in any one of Claims 1-6,
There is a sill rail on the top of the sill,
A sliding door structure, wherein a sliding roller is rotatably supported at a lower end portion of the sliding door while being engaged with the sill rail and rolling.

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