JP3046386U - Door roller with adjustment pointer - Google Patents

Abstract

(57) [Summary] In a door bogie that performs up and down adjustment of wheels from a lower surface side of a mounting frame, a door bogie with an adjustment pointer that can easily grasp the amount of up and down adjustment of wheels and can easily perform up and down adjustment. To provide. A pointer (30) is displaced in a slit (29) formed on a lower surface (1a) of a mounting frame (1) and extending in the front-rear direction according to the vertical position of a wheel (16). The pointer 30 is formed at the lower end of a pointing member 31 that is swingably supported by the mounting frame 1.
A protrusion is provided on a member that moves up and down in accordance with the up and down adjustment of the wheel 16, and the protrusion is fitted into a U-shaped guide groove 33 formed on the pointing member 31. At the time of vertical adjustment, the pointing member 31 swings and displaces the pointer 30.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a door roller mounted on a sliding door and capable of adjusting the vertical position of wheels.

[0002]

[Problems to be solved by conventional technology and device]

 Conventionally, sliding doors for sliding doors are housed and fixed in mounting recesses which are engraved and formed on the lower surface of the lower frame and open only downward. In such a door roller, there is provided one provided with a vertical adjustment mechanism for adjusting the vertical position of wheels. In this case, a rotating operation unit (for example, a screw head or the like) for adjusting the vertical position is arranged so as to be exposed on the lower surface side of the lower frame.

By the way, conventionally, when an adjustment of, for example, 0.5 mm is required, first, before the adjustment, the amount of protrusion of the wheel from the lower frame is measured and remembered. After making adjustments by turning the screw head as the working part, the amount of protrusion of the wheels from the lower frame was measured again, and the actual amount of adjustment was grasped by comparing with the amount of protrusion before adjustment. Then, it was necessary to make several adjustments until the adjustment amount became 0.5 mm, which was very troublesome.

In order to measure the amount of protrusion of the wheel from the lower frame, for example, a patch plate is provided at the lower end of the wheel so as to be parallel to the lower surface of the lower frame. It was necessary to measure the interval between using a caliper. For this reason, the measurement itself is complicated and the measurement accuracy is poor, and the adjustment is performed based on such a measurement with low accuracy, which requires much time and effort.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a door wheel with an adjustment pointer that can easily grasp the adjustment amount of the vertical position of the wheel and can easily perform the vertical adjustment. Aim.

[0006]

[Means for Solving the Problems]

 As a means for solving the problems to achieve the above object, the invention according to claim 1 includes a mounting frame body that is housed and fixed in a mounting recess on the lower surface of a lower frame of a sliding door that is opened and closed left and right, and a front and rear direction inside the mounting frame body. And a pivoting operation unit provided on the lower surface of the mounting frame so as to be pivotable about an axis along the axis, and rotatably supporting the wheels. A vertical adjustment mechanism that adjusts the upper and lower positions of the wheels via the holding frame, and a pointer that is displaced in the front-rear direction on the lower surface of the mounting frame in accordance with the vertical position of the wheels. Is what you do.

With this configuration, when the vertical position of the wheel is adjusted by operating the rotation operating section from the lower surface side of the mounting frame, the pointer is displaced in the horizontal direction on the lower surface of the mounting frame. You. The operator can easily grasp the position adjustment amount of the wheel based on the displacement amount of the pointer portion, so that the vertical adjustment work can be performed much easier as compared with the related art.

According to a second aspect of the present invention, in the first aspect, the pointer has a U-shaped contour shape which is supported by the mounting frame so as to be swingable around an axis extending in the left-right direction. The pointing member is formed at an end of the member, and includes a guide groove having a V-shape substantially conforming to the contour shape of the pointing member. The guide groove is provided on the holding frame or a member displaced together with the holding frame. The projections are fitted with each other.

In this configuration, when the holding frame body swings around an axis extending in the front-rear direction (parallel to the support shaft of the wheel) with the vertical position adjustment of the wheels, the holding frame body is provided on the holding frame body and the like. The projection moves up and down while tracing the U-shaped guide groove of the indicating member. As a result, the indicating member is displaced by swinging, thereby displacing the pointer in the horizontal direction. The use of the U-shaped guide groove makes it possible to convert the vertical displacement into the longitudinal displacement of the pointer with a simple engagement structure.

According to a third aspect of the present invention, in the second aspect, the vertical adjustment mechanism includes a screw shaft that includes the rotating operation unit along a vertical direction and is held rotatably with respect to the mounting frame. A screw hole for coupling the screw shaft, a vertically moving member driven up and down by the screw shaft to swing the holding frame, and the projection is provided on the up and down moving member. Is what you do.

[0011] In this configuration, since the vertically movable member driven up and down by the screw shaft is provided with the protrusion relating to the guide groove, the protrusion can move in parallel with the pointing member. Therefore, since the protrusion can be fixed to the guide groove in a constant amount, the pointing member can be swung stably. In addition, since the protrusion is provided on the vertical movement member originally provided in the vertical adjustment mechanism, the structure can be simplified.

According to a fourth aspect of the present invention, in the second aspect, the pointing member is sandwiched between the up-and-down moving member and the inner surface of the mounting frame to guide the swing. It is. With this configuration, the pointing member can be operated smoothly. In addition, the structure is simpler than in the case where a separate mechanism is provided to guide the swinging movement of the pointing member, which can contribute to downsizing of the entire door roller.

According to a fifth aspect of the present invention, in the first aspect, a slit extending in the front-rear direction is formed on a lower surface of the mounting frame body, and a pointer portion is introduced into the slit. Is characterized by a scale. With this configuration, the vertical adjustment position of the wheel can be accurately grasped based on the scale around the slit periphery.

[0014]

[Embodiment of the invention]

 Preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of a door roller as one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the door roller. Referring to these drawings, the door bogie includes a mounting frame 1 as a door bogie main body, and the mounting frame 1 is open only to the lower side formed on the lower surface 4 of the lower frame 3 of the sliding door 2. And is fixed in the mounting recess 5. Hereinafter, the direction in which the sliding door 2 is opened and closed is referred to as the left-right direction, and the direction along the support shaft of the wheel (the direction perpendicular to the paper surface in FIG. 1) is referred to as the front-back direction.

The mounting frame 1 includes a box-shaped main body 6 having an opening 1b on the lower surface 1a, and an expansion section 8 connected to the main body 6 only by a base connecting section 7. A wedge-shaped opening 9 that opens downward is formed between the main body 6 and the extension 8. When the tapping screw 10 is screwed into the inner deep surface 12 of the mounting concave portion 5 from below the mounting frame 1 through the wedge-shaped opening 9 and the insertion hole 11 formed in the connecting portion 7, the tapping screw 10 is accordingly driven. The extension 8 is deformed outward such that the lower free end 13 is pivoted outward about the base connection 7. Thus, the length of the mounting frame 1 in the longitudinal direction is expanded, and the mounting frame 1 is fixedly stretched between the wall surfaces 14 and 14 in the mounting recess 5. Reference numeral 15 denotes a biting projection for making both ends of the mounting frame 1 bite into the wall surfaces 14 and 14, and is formed to extend in the front-rear direction.

In the mounting frame 1, a holding frame 17 that rotatably holds the wheels 16 is accommodated. The holding frame 17 is swingably supported around a swing center shaft 18 spanned between front and rear wall surfaces of the mounting frame 1. Further, an annular cleaning tool 50 having an end is fitted on the outer peripheral surface of the wheel 16 via a plurality of holding portions 52 formed therein. At both ends of the cleaning tool 50, a pair of sweeping parts 51, 51 are provided. Of the pair of sweeping portions 51, only the discharging portion 51 forward of the wheel 16 in the traveling direction comes into contact with the groove surface Ra of the guide rail R, and sweeps out the dust accumulated on the groove surface Ra. To do so, the cleaning tool 50 is held rotatably with the wheel 16 with a predetermined holding force, and when the rotation force of the wheel 16 exceeds this holding force, the cleaning tool 50 allows relative rotation with the wheel 16. It is like that. The reason why the sweeping portion 51 is brought into contact with the groove surface Ra only in the front of the traveling direction is to prevent dust from staying around the wheel 16.

The holding frame 17 is formed by connecting lower edge portions on one end side of a pair of front and rear side plates 19, 19 each having a substantially triangular shape with a connection plate 20. The wheel 16 described above is disposed between the front and rear side plates 19, 19 of the holding frame 17, and is rotatably supported via a support shaft 21 bridged between the side plates 19, 19. Further, the pair of side plate portions 19, 19 are formed with a long hole 22 through which the swing center shaft 18 is inserted. On the opposite side to the side where the long hole 22 is formed, a support hole 23 is formed at a portion facing the pair of side plates 19, 19, and a cylindrical shaft 24 extending in the front-rear direction is rotatable in the support hole 23. Supported.

A screw hole 25 is formed through the cylindrical shaft 24 in the radial direction, and a screw shaft 26 vertically extending and held by the mounting frame 1 so as to rotate freely is formed in the screw hole 25. Connected and penetrated. The upper end 27 of the screw shaft 26 is reduced in diameter and connected to the upper surface of the mounting frame 1 so as to be rotatable and stop moving in the axial direction. Further, the lower end of the screw shaft 25 forms a rotation operation part 28 having a screw head whose diameter is enlarged. The turning operation part 28 is inserted into a housing hole 1c formed in the lower surface 1a of the mounting frame 1, and is in a state of allowing a turning operation by a driver or the like from below.

Referring to FIGS. 1 to 3, a long slit 29 in the front-rear direction is formed on the lower surface 1 a of the mounting frame 1 at a position close to the accommodation hole 1 c of the rotating operation part 27. In this slit 29, a pointer 30 which is displaced in accordance with the vertical adjustment position of the wheel and which can be seen from below is exposed. As shown in FIG. 3, a scale 40 for grasping the amount of displacement of the pointer 30 is provided on a peripheral portion of the slit 29. As the scale 40, at least an upper scale 41, a lower scale 42, and a center scale 43 indicating a center position of the adjustment width may be at least provided.

The pointer 30 is constituted by one end of a pointing member 31 having a U-shaped contour. The pointing member 31 is fitted in a support hole 1e formed in the inner end surface 1d of the mounting frame 1 with a support shaft portion 32 protruding from the back surface of the bent central portion of the U-shape to be moved in the left-right direction. Is supported so as to be able to swing around an axis along. On the other hand, on the front surface of the pointing member 31 facing the screw shaft 26, a U-shaped guide groove 33 is formed substantially along the contour of the pointing member 31. The central position of the square of the guide groove 33 corresponds to the position of the center of the support shaft portion 32.

On the other hand, referring to FIGS. 1 and 2, a projection forming member 35 having a projection 34 fitted into the guide groove 33 is fixed to the outer peripheral surface of the cylindrical shaft 24. Referring to FIG. 4, projection forming member 35 forms a housing portion 38 for holding cylindrical shaft 24 between the four legs, and has cylindrical shaft 24 at the back of housing portion 38. Fitting projections 39 are formed to be fitted into fitting recesses 45 formed on both end sides of the fitting.

Further, referring to FIG. 1, the front and rear side surfaces of the projection forming member 35 are slidable in such a manner as to be fitted exactly between the pair of side plates 19, 19. Thus, the relative rotation between the cylindrical shaft 24 and the holding frame 17 is not hindered, and the posture of the projection forming member 35 is more reliably held. A vertical moving member 36 is constituted by the cylindrical shaft 24 and the projection forming member 35 fixed to the cylindrical shaft 24, and a vertical adjusting mechanism 37 is constituted by the vertical moving member 36 and the screw shaft 24.

In the present embodiment, referring to FIG. 1, after the mounting frame 1 has been mounted on the mounting recess 5, when the rotation operation unit 28 is operated from the lower surface 1 a side of the mounting frame 1, the screw The cylindrical shaft 24 screwed to the shaft 26 is driven upward or downward, and the vertical position of the wheel 16 is adjusted accordingly. On the other hand, at the time of this adjustment, the protrusion forming member 35 moves integrally with the cylindrical shaft 24, and the protrusion 34 sets the engagement position of the pointing member 31 with the V-shaped guide groove 33 in FIGS. It is changed up and down as shown in FIG. As a result, the pointing member 31 swings about the support shaft 32, and the pointer 30 moves in the slit 29 in the front-rear direction. The operator can easily grasp the position adjustment amount of the wheel 16 based on the displacement amount of the pointer 30, so that the vertical adjustment operation can be performed much easier as compared with the related art.

In particular, the vertical adjustment position of the wheel 16 can be grasped more accurately with reference to the scale 40 on the peripheral edge of the slit 29. Further, by using the U-shaped guide groove 33, the vertical movement displacement of the cylindrical shaft 24 and the projection forming member 35 can be converted into the front-rear displacement of the pointer 30 with a simple engagement structure.

Further, since the projection forming member 35 forming the projection 34 is attached to the cylindrical shaft 24 driven up and down by the screw shaft 26, the projection 34 can move in parallel with the pointing member 31 along the vertical direction. Therefore, since the protrusion 34 can make the amount of fitting into the guide groove 33 constant, the pointing member 31 can be rocked stably. Further, since the projection forming member 35 having the projection 34 is provided on the cylindrical shaft 24 originally provided in the vertical adjustment mechanism 37, the structure can be simplified.

Further, since the pointing member 31 is guided between the protrusion forming member 35 included in the up-and-down moving member 36 and the inner end face 1 d of the mounting frame 1 and guided to swing, the pointing member 31 is provided. Can be operated smoothly. Further, as compared with a case where a separate mechanism is provided for guiding the swing of the pointing member 31, the structure is simpler, and it can contribute to downsizing of the entire door roller.

The present invention is not limited to the above-described embodiment. For example, a projection that engages with the guide groove 33 may be formed on the holding frame 17. In addition, various changes can be made within the scope of the present invention.

[0028]

[Effect of the invention]

 According to the invention of claim 1, when the vertical position of the wheel is adjusted, the pointer is displaced in the front-rear direction on the lower surface of the mounting frame, which is the adjustment side, and the operator can adjust the position based on the displacement of the pointer. As a result, the amount of wheel position adjustment can be easily grasped, so that the up and down adjustment work can be performed much easier than in the past.

In the invention according to the second aspect, since the pointing member having the pointer portion and the holding frame are engaged using the V-shaped guide groove, the vertical movement can be achieved by a simple engagement structure. The displacement can be converted to the longitudinal displacement of the pointer. According to the third aspect of the present invention, since the fitting amount of the protrusion into the guide groove can be constant, the pointing member can be rocked stably. In addition, since the protrusion is provided on the vertical movement member provided in the vertical adjustment mechanism, the structure can be simplified.

According to the present invention, the pointing member can be operated smoothly. In addition, the structure is simpler than in the case where a separate mechanism is provided to guide the swing of the pointing member, and it can contribute to downsizing of the entire door roller. According to the invention of claim 5, the vertical adjustment amount of the wheel can be accurately grasped based on the scale of the slit periphery.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a door roller according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the door roller.

FIG. 3 is a bottom view of the door roller.

FIG. 4 is an exploded perspective view of a cylindrical shaft and a projection forming member that constitute a vertically moving member.

FIGS. 5A and 5B are cross-sectional views taken along line CC of FIG. 1, respectively, showing a state in which the hands are displaced when adjusting the position of the wheel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mounting frame 2 Sliding door 3 Lower frame 4 Lower surface 5 Mounting frame 16 Wheel 17 Holding frame 18 Swing center shaft 21 Support shaft 24 Cylindrical shaft 25 Screw hole 26 Screw shaft 28 Rotating operation part 29 Slit 30 Pointer part 31 Instruction Member 32 Support shaft part 33 Guide groove 34 Projection 35 Projection forming member 36 Vertical movement member (member displaced together with holding frame) 37 Vertical adjustment mechanism 40 Scale

Claims (5)

[Utility model registration claims] 1. A mounting frame housed and fixed in a mounting recess on a lower surface of a lower frame of a sliding door that is opened and closed left and right, and a wheel supported in the mounting frame so as to be swingable around an axis extending in the front-rear direction. A holding frame body rotatably supporting the rotating frame, and a rotating operation section provided on the lower surface of the mounting frame body, and adjusting the vertical position of the wheels via the holding frame body in accordance with the operation of the rotating operation section. And a pointer portion displaced in the front-rear direction on the lower surface of the mounting frame in accordance with the vertical position of the wheel. 2. The pointing part is formed at an end of a pointing member having a U-shaped contour shape supported by the mounting frame so as to be swingable around an axis extending in the left-right direction. A guide groove having a V-shape substantially along the contour of the indicating member is provided. A protrusion provided on the holding frame or a member displaced together with the holding frame is fitted into the guide groove. The door wheel with an adjustment guide according to claim 1. 3. The vertical adjustment mechanism includes a screw shaft that includes the rotating operation portion along the vertical direction and is held rotatably with respect to the mounting frame, and a screw hole that couples the screw shaft. 3. The door wheel with an adjustment pointer according to claim 2, further comprising a vertically moving member driven up and down by a screw shaft to swing the holding frame, wherein the vertically moving member is provided with the protrusion. 4. The door wheel with an adjustment pointer according to claim 3, wherein the pointing member is pinched between the vertically moving member and the inner surface of the mounting frame to guide the swing. 5. A slit extending in a front-rear direction is formed on a lower surface of the mounting frame, and a pointer portion is introduced into the slit, and a scale is provided on a peripheral edge of the slit. A door wheel with an adjustment guide according to claim 1.