JP2003129733A - Sash roller capable of adjusting height of wheel thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sash roller which is capable of adjusting the height of a wheel thereof through simple operation without detaching the sash roller from a sliding door, and ensures the engaged height of the wheel after the adjustment. SOLUTION: In this sash roller, an eccentric camshaft 4 having a hollow shape is protruded from an eccentric portion of a support disk 42, and the eccentric camshaft is single-supported in a sash roller case 2, which eccentric camshaft axially supports an eccentric support shaft 5 protruding thereinto from an eccentric portion of a rotation operating plate 52, whereby a tip side of the eccentric camshaft is supported. Then, engagement of vertical movement of the eccentric camshaft is carried out by engaging a projection 44 formed on the support disk with a valley of an inner toothed washer 28a formed in a stepped hole 23, and adjustment of the height of the eccentric camshaft is achieved by operating a recess 54 formed in an outer surface of the rotation operating plate with the tip of an operating tool being engaged therewith in a rotating direction, and allowing the projection to override a ridge of the inner clip washer by elastic force of a material caused by rotational force, to thereby rotate the support disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to adjusting the height of a wheel by a simple operation even when it is attached to a sliding door to adjust the height of the sliding door and the smooth running of the sliding door. Related to the possible door car.

[0002]

2. Description of the Related Art As a door roller of a known art capable of adjusting the height of wheels, there is, for example, "Adjusting door roller" described in Japanese Patent Laid-Open No. 10-102884. In this adjustment door roller, a wheel frame, in which wheels are pivotally supported by pins, is pivotally supported by pins in a vertical direction so as to swing vertically in the door roller case, and penetrates in the door roller case in the front-rear direction with the head in front of the door roller case. A stopper is provided that slides in the front-back direction by screwing a screw provided so as to be exposed from the plate, and a part of the wheel frame comes into contact with the stopper to prevent the wheel frame from swinging. The part has a structure that can be slid to the left and right via a cam by rotation of a screw exposed from the front plate of the door roller case.

[0003]

However, the above-mentioned adjustment door wheel of the prior art can only be adjusted by observing how much the height of the wheel is adjusted from the wheel case out of the door wheel case. In some cases, the wheels may not descend due to their own weight when oriented in such a direction, so it may take time to adjust the height of the wheels. Also, since the height adjustment by this adjusting door roller is made from the front side in the traveling direction of the door roller case, in order to adjust the height after it is attached to the sliding door, the door roller case must be attached to the front end of the sliding door. There is a restriction on the mounting position to the sliding door, such as mounting by exposing it or forming an opening for exposing the height adjusting screw on the front end surface of the sliding door.

Under these circumstances, the inventor of the present invention has begun to develop a door roller that solves the above-mentioned problems, and as a result of earnest studies and studies, finally developed a door roller whose height can be newly adjusted. Then, I came up with making a prototype.

According to the present invention proposed to achieve the above object, the height of the wheel can be adjusted by a simple operation even when it is attached to the sliding door, and the height of the wheel after the adjustment can be adjusted. The purpose of the present invention is to provide a door wheel with a firm lock, a simple structure, few failures, easy installation to a sliding door, and adjustable wheel height to prevent accidental disengagement. To do.

[0006]

A door roller with adjustable wheel height according to claim 1, which is proposed to achieve the above object, is an eccentric cam having wheels mounted in a door case. In a door roller having a structure in which the vertical position of the wheels can be adjusted by operating the shaft in the vertical direction from the outside, the eccentric cam shaft has a hollow shape, and the base end of the eccentric cam shaft has a circular shape. By projecting from the eccentric part and projecting this circular support plate from the outside of the door car case into the circular stepped hole provided in one of the opposite wall parts of the door car case, An eccentric part of the rotating operation plate, which is supported and is made to protrude from the eccentric portion of the rotating operation plate, is made to protrude from the outside of the door case into a circular stepped hole provided in the other wall portion of the both wall portions. Eccentricity by supporting the wick support shaft inside the eccentric cam shaft The front end of the shaft is supported, and the vertical movement of the eccentric cam shaft is locked by the projection formed on the inner surface of the support plate in the valley of the chrysanthemum formed in the stepped hole. The height of the eccentric cam shaft is adjusted by operating the eccentric cam shaft in the rotational direction while keeping the tip of the operating tool locked in the recess formed on the outer surface of the rotating operation plate. It is characterized in that the projection is carried out by the elastic force of the material caused by the rotating force, overcoming the mountain of the chrysanthemum and rotating the support plate.

The door wheel with adjustable wheel height according to the first aspect (hereinafter, simply referred to as the door wheel of the first aspect) is supported by the eccentric cam shaft alone, but this eccentric cam is used. The eccentric cam shaft is inserted and locked into the eccentric support shaft from the tip side of the shaft to support both of them. The bases of the eccentric cam shaft and the eccentric support shaft both project from the eccentric position deviated from the centers of the circular support plate and the rotary operation plate, and the eccentric cam on which the wheel is mounted has both plates. Are supported by being protruded from the outside in the stepped holes formed in the opposite wall portions of the door roller case. That is, the eccentric cam shaft that supports the wheel is supported by the door case with both of these plates. By doing so, the eccentric position of the eccentric cam shaft can be set within the range of the sizes of the circular support plate and the rotation operation plate by setting the space in the door case and the size of the wheels and the thickness of the eccentric cam shaft. It can be designed so that a large height adjustment can be performed considering comprehensively. Moreover, when the wall of the door roller case on the side where the outer surface of the rotation operation plate is located is exposed from the sliding door and the door roller of claim 1 is attached, the height of the wheels can be freely adjusted even after the door is attached to the sliding door. . In addition, when the weight of the sliding door applied to the eccentric cam shaft via the wheels is received by the stepped holes in both wall portions of the door case through the outer peripheral surfaces of the large-diameter support plate and the rotation operation plate, The posture of the eccentric cam shaft is stable, and the eccentric cam shaft does not slightly tilt or shake during traveling. Particularly, when the height of the wheel is adjusted by the rotary operation plate supported on one wall of the door case, and the desired height is locked by the support plate supported on the other wall. It is possible to design the eccentric cam shaft so that it can be supported, locked and operated easily. According to the door roller of the first aspect, the locking when the eccentric cam shaft is adjusted to a desired height is performed by locking the projection formed on the inner surface of the support plate and the chrysanthemum. Therefore, the locking is performed firmly, and the weight is not applied to these locking portions so that the projection does not jump over the ridge of the chrysanthemum and the locking portions are not damaged. Further, since the protrusions and chrysanthemums are formed on the surface that easily exerts elasticity, it is easy to adjust the height of the wheel and the locking portion is not damaged.
The number of the protrusions may be one, but the locking is effectively performed. In this way, the locking between the protrusion (chrysanthemum) and the chrysanthemum becomes more secure.

By the way, the door roller according to each of the above claims is
The sliding door is formed by forming recesses having a shape matching the outer shape of the door roller case at two positions in the front and rear of the lower end portion of the sliding door, and by fitting the recesses with the front surface exposed from below. Although it is possible to use a flange surface having a wood screw hole for attachment for attaching to the side surface or the lower surface of the above, it is easy to attach if it can be fixed simply by pushing in from below the recess. The appearance of the sliding door is not unsightly. However, if it is attached in this way, it is expected that the door roller will come out from the inside of the recess of the sliding door toward the front side during long-term use.

[0012] Therefore, the door wheel with adjustable wheel height according to claim 5 is the door wheel according to any one of claims 1 to 4, in which the left and right wheels are oriented in the traveling direction of the door wheel case. When the door case is fitted into the recess of the sliding door at an appropriate position between the outer wall and the upper surface, the door case is prevented from coming off.
The retaining portions such as protrusions and ridges are formed. With this configuration, unexpected external pressure is not applied to the sliding door, the door is displaced, and the door does not drop out of the sliding door due to long-term use.

[0013]

The objects and configurations of the present invention are as described above, and subsequently, a concrete embodiment of the door wheel of the present invention in which the height of the wheel can be adjusted is shown in the accompanying drawings. Will be described in detail. 1 (a) and 1 (b) both show a front door and a rear surface of a door roller (hereinafter, abbreviated as the door roller of this embodiment) whose height can be adjusted according to an embodiment of the present invention. It is the perspective view seen from the side, and is a figure (a) and (b) of FIG.
The figure is also a front view and a rear view, (c) is a bottom view, and FIG.
FIG. 3 is a diagram showing the same disassembled state. A door roller 1 of the present embodiment shown in each of these drawings includes a door roller case 2, wheels 3,
The eccentric cam shaft 4 that supports the wheel 3 and the eccentric support shaft 5 that supports the eccentric cam shaft 4 from the tip side are assembled, and the height of the wheel 3 can be adjusted by a simple operation. Cage,
Each of these members is made of polyacetal resin (Duracon). FIGS. 4A to 4D show the difference due to the adjustment of the wheel height.

Next, the above-mentioned members will be described in detail. As shown in each of FIG. 3, each of FIG. 4, and FIG. 5, the door roller case 2 includes a wall portion 21 forming a front surface thereof and a wall portion 22 forming a rear surface thereof, and a side wall 25 extending from left and right to an upper surface.
The door 21 is formed integrally with the door 3, and an upper portion thereof is opened and an upper portion thereof is formed in an arc shape along the upper portion of the wheel 3, and a wall portion 21 forming a front surface and a wall portion 22 forming a rear surface of the door roller case 2 are formed. Large-diameter stepped holes 23 and 24 are formed in the lower part in the center between the left and right sides, respectively. Of these large-diameter stepped holes 23, 24, a projection 27 slightly protruding forward is formed in the lower portion of the low stepped portion 26 forming the peripheral edge of the stepped hole 23 located on the front side. The lower step portion 28 forming the peripheral edge of the stepped hole 24 located on the back side is formed by a chrysanthemum seat 28a facing the front side. Further, projections 29, ..., which are designed to prevent the slip-out of the sliding door, are formed on the left and right side walls 22 so as to prevent the slipping-out of the sliding door.

As shown in each of FIGS. 1 to 4 and FIG. 6, the eccentric cam shaft 4 has a hollow shape in which a square hole 43 is formed, and its base end 41 is the rear side of the door roller case 2. Wall part 2
2 is formed so as to project from an eccentric portion on the surface portion of a circular support plate 42 having a size that fits exactly into the stepped hole 24 formed in 2, and the eccentric cam shaft 4 in this support plate 42 is projected. Protrusions 44 ... Are formed at three equally spaced locations along the vicinity of the outer periphery of one face (inner face).
A cutout portion 44 is formed in the surface portion of the support plate 4 in the vicinity of the right and left sides from the periphery toward the center.

As shown in each of FIGS. 1 to 4 and FIG. 7, the eccentric support shaft 5 has a hollow shape in which a round hole 57 is formed, and its base end 51 is on the front side of the door roller case 2. Wall part 2
The rotary operation plate 52 is formed so as to project from an eccentric portion in the surface portion of a circular rotary operation plate 52 that also serves as a support plate having a size that fits into the stepped hole 23 formed in 1.
It is desirable to provide a plurality of the rotary operation plates 52 on the front surface of the rotary operation plate 52 at equal intervals so that the rotary operation plates 52 can be engaged with a tool to be operated from the outside. A shape having a slope is preferable. Further, the length may be along the valley of Kikuza to some extent. In Claim 1 and the following description, the outer surface is a surface exposed in the state of being assembled as a door roller, and the inner surface is a surface not exposed.

A door wheel with adjustable wheel height according to a second aspect of the present invention is the door wheel according to the first aspect of the present invention, in which the range of rotation of the rotary operation plate is a stepped hole supporting the rotary operation plate. The projection formed on the lower step surface of the inner part is configured to be performed within the range of the arcuate step part formed on the outer surface of the rotary operation plate. With this configuration, the height adjustment range of the wheels can be easily understood. Moreover, since these protrusions and stepped portions are formed on the inner surface of the rotary operation plate that is not exposed and at the location facing the rotary operation plate, the rotary operation plate is fitted in the outer wall of the door case with the surfaces aligned. It looks good. If the outer surface of the rotary operation plate is provided with protrusions or recesses indicating the rotational position or a mark by coloring, and further, a scale is provided on the outer surface of the rotary operation plate or the outer wall surface of the door case along the outer surface of the rotary operation plate, the degree of adjustment can be seen at a glance. it can. This recess corresponds to either a slit or a cross hole that locks the tip of a tool such as a driver, but it is formed into a slit (a single-character hole) that is large enough to lock the end of a coin. Then, the height can be adjusted without using a tool, and the recess is not damaged.

[0009] A door roller whose wheel height can be adjusted according to claim 3 is the door roller according to claim 1 or 2,
The hollow hole formed in the eccentric cam shaft is a square hole, and the eccentric support shaft has a square bar shape along the hollow hole. With this configuration, when the eccentric cam shaft and the eccentric support shaft are assembled, the eccentric position can be accurately adjusted.

[0010] In the following door car with adjustable wheel height according to claim 4, in the door car according to any one of claims 1 to 3, a projection for engaging with the valley of the chrysanthemum is provided. It is formed by a chrysanthemum seat that is opposed to the seat. A concave portion (one-character concave portion) 54 is formed, and further, a lower surface portion 53 is formed in the vicinity surface along the outer periphery of the rotation operation plate 52 on the side where the eccentric support shaft 5 is projected, and the low step portion 53. And rotation operation plate 52
The substantially half-circumferential portion of the corner formed by the above is formed by lacking the locking portion 55 raised in an arc shape, and the ridge 56 is formed around the base portion of the eccentric support shaft 5. Has become.

Next, the method of assembling the door roller 1 of this embodiment and the structure after the assembling will be described. As shown in FIGS. 3 (a) and 4 (c), the assembly is performed with the eccentric cam shaft 4 on the rear side of the door case 2 with the wheel 3 positioned inside the door case 2. The eccentric cam shaft 4 is inserted into the shaft hole 31 of the wheel 3 by protruding from the outside into the stepped hole 24, and the support plate 42 at the base of the eccentric cam shaft 4 is inserted into the stepped hole 24. Fit in. In this state, since the eccentric cam shaft 4 on which the wheel 3 is mounted is in the one-sided supporting state, subsequently, the position where the eccentric support shaft 4 is eccentric is set to the position of the eccentric cam shaft 4. In a similar manner, the eccentric support shaft 5 is projected from the outside into the stepped hole 23 on the front (front) side of the door roller case 2 and is press-fitted into the opening 43 of the eccentric cam shaft 4 while being eccentric. The rotary operation plate 5 formed on the base of the core support shaft 5 is fitted into the stepped hole 23. By doing so, the eccentric cam shaft 4
Are supported by the door roller case 2 by the support plate 42 and the rotation operation plate 52, and the projections 44 formed on the support plate 42 are formed on the stepped holes 24 of the door roller case 2. 28a is fitted in the valleys between the teeth, and the rotation of the rotary operation plate 52 is locked. That is, the heights of the eccentric cam shaft 4 and the wheels 3 are fixed.

Next, referring to FIG. 1 (a), the method of adjusting the height of the wheels 3 in the door roller 1 of this embodiment and the height adjustment will be described with reference to FIGS. 4 and 8 and 9. The subsequent structure will be described. In the following, the case where the height of the wheel is increased from the increased state will be mainly described. The adjustment is performed as shown in FIG. 1 (a) and FIG. 4 (c).
For example, an end of a coin is locked and rotated in a slit 54 (a concave portion of one letter) formed on the outer surface of the rotary operation plate 52. In the present embodiment, the turning direction is, as shown in FIGS. 8 (a) to 8 (b), a half turn to the right,
The height of the wheel 3 is the highest. That is, the vehicle height of the door roller case becomes low. In this way, when a force for rotating the rotation operation plate 52 is applied, the projections (4 ...) On the side of the support plate 42 that have fallen into the valleys of the chrysanthemum (28a) and are locked are the support plates around it. The part moves backwards due to the elasticity of the resin and the Kikuza (2
Since it goes over the mountain of 8a), it becomes possible to rotate.

As shown in FIGS. 8 (a) and 8 (b), the range of this rotation operation is an arcuate step portion 55 formed on the inner surface (the invisible side surface) of the rotation operation plate 52. Is the range of contact with the protrusion 27 formed in the stepped hole 23 of the door roller case 2, and one end of the step 55 is the protrusion 27.
The position of the wheel 3 (eccentric cam shaft 4) is the highest in the abutting state, and the wheel 3 (eccentric cam shaft 4) is in the abutting state when the other end of the step portion 55 is in contact with the protrusion 27. This is the lowest position. In this way, the rotary operation plate 5
When 2, is operated, as shown in FIG. 9, the eccentric cam shaft 4 and the center P of the wheel 3 can be locked at an arbitrary height along a trajectory V that moves vertically while rotating.

[0020]

As described above, according to the door wheel of the invention of claim 1 capable of adjusting the height of the wheel, the base end of the hollow eccentric cam shaft having the wheel mounted therein has a circular support plate. From the outside of the door roller case, the circular support plate is projected from the outside of the door roller case into a circular stepped hole formed in one of the opposite wall portions of the door roller case so as to be supported one side in the door roller case. Further, an eccentric support projecting a circular rotary operation plate from the outside of the door roller case into a circular stepped hole provided in the other wall portion of the both wall portions and projecting from an eccentric portion of the rotary operation plate. By supporting the shaft in the eccentric cam shaft so that the tip side of the eccentric cam shaft can be supported, the eccentric position of the eccentric cam shaft can be changed to a circular support plate and a rotary operation. Within the range of the size of the board, the size of the space and wheels in the door car case Adjustment of greater height by comprehensively taking into account the thickness of the eccentric cam shaft can now be designed to perform. Moreover, since the door roller can be attached by exposing the door rotation operation plate from the sliding door, the height of the wheels can be freely adjusted even after the door is attached to the sliding door.

Further, the vertical movement of the eccentric cam shaft is locked by locking the projection formed on the inner surface of the support plate with the valley of the chrysanthemum formed in the stepped hole. As a result, the height of the eccentric cam shaft and thus the wheel can be securely locked at a desired height.

Further, according to the door wheel of the invention of claim 2 capable of adjusting the height of the wheel, in the structure of claim 1,
The rotation operable range of the rotary operation plate is within the range of the arcuate stepped portion formed on the outer surface of the rotary operation plate with the restriction projection formed on the low step surface in the stepped hole supporting the rotary operation plate. The height adjustment range of the wheels can be easily understood by doing so, and since these protrusions and stepped portions are formed on the inner surface of the rotary operation plate that is not exposed and at the location facing the rotary operation plate, Since it fits flush with the outer wall of the door case, it looks good.

According to the door wheel of the invention of claim 3 capable of adjusting the height of the wheel, in the structure of claim 1 or 2, the hollow hole formed in the eccentric cam shaft is a square hole. Since the eccentric support shaft is formed into a square rod shape along the hollow hole so that the eccentric support shaft can be inserted into the eccentric cam shaft and assembled, the eccentric cam shaft and the eccentric support shaft are formed. When assembling and, it is now possible to match the correct eccentric position.

Further, according to the door wheel of the invention of claim 4 capable of adjusting the height of the wheel, in the structure according to any one of claims 1 to 3, the projections which are locked in the valley of the chrysanthemum seat are provided. Since the chrysanthemum seat is formed so as to face and face the chrysanthemum seat, the projection (the chrysanthemum seat) and the chrysanthemum seat can be locked more firmly, and by extension, the wheel It is now possible to maintain the adjusted height firmly.

Further, according to the door wheel of the invention of claim 5 capable of adjusting the height of the wheels, in the configuration according to any one of claims 1 to 4, the door wheel is oriented in the traveling direction of the door wheel case. Unexpected external pressure can be prevented by forming protrusions, ridges, etc. at appropriate places between the left and right outer walls to the top surface to prevent the door case from slipping when it is fitted into the recess of the sliding door. It has become possible to prevent the doors from being displaced due to being added to the sliding doors or being used for a long period of time and the doors from falling out of the sliding doors.

[Brief description of drawings]

FIG. 1 (a) is a perspective view of a door roller according to an embodiment of the present invention, in which the height of wheels can be adjusted, as seen from the front side.
FIG. 6B is also a perspective view seen from the back side.

FIG. 2A is a front view of the same. The figure (b) is also a rear view. The figure (c) is also a bottom view.

FIG. 3 is a perspective view showing the same in an exploded manner.

FIG. 4 (a) is a front sectional view showing a state in which the vehicle height is likewise increased. FIG. 6B is a front sectional view showing a state in which the vehicle height is similarly lowered. FIG. 6C is a side sectional view showing a state in which the vehicle height is likewise increased. (D) Figure shows
FIG. 6 is a side sectional view showing a state in which the vehicle height is likewise lowered.

FIG. 5A is a front view showing a door roller case. FIG. 6B is a side sectional view of the same. The figure (c) is also a bottom sectional view. The figure (d) is also a rear view. Similarly, (e) figure is a front sectional view.

FIG. 6A is a plan view showing an eccentric cam shaft. The figure (b) is also a front view. The figure (c) is also a rear view. The figure (d) is also a side view.
FIG. 6E is a side enlarged sectional view of the same.

FIG. 7A is a plan view showing a rotary operation plate. The figure (b) is also a front view. The figure (c) is also a rear view. FIG. 5D is also a right side view. The figure (e) is also a left side view. (E) Figure shows
Similarly, it is a side expanded sectional view.

FIG. 8A is a diagram, FIG.

FIG. 9 is a detailed view showing the locus of the wheel height adjustment.

[Explanation of symbols]

1 Door car with adjustable wheel height (door car) 2 car case 21,22 wall 23, 24 stepped holes 26, 28 Lower stage 28a Kikuza 29 Protrusion Three wheels 4 Eccentric cam shaft 42 Support plate 44 protrusions 46 notch

Claims (5)

[Claims] 1. A door roller having a structure capable of adjusting the vertical position of a wheel by operating an eccentric cam shaft mounted with a wheel in the door roller case in the vertical direction from the outside. A circular step having a hollow shape, the base end of which protrudes in the plane direction from an eccentric portion of a circular support plate, and which has the circular support plate on one of the opposite wall portions of the door case. The door roller case is supported on one side in the door roller case by being inserted into the hole from the outside of the door roller case, and the door roller case is provided in a circular stepped hole having a circular rotary operation plate on the other wall portion of the both wall portions. The eccentric support shaft protruding from the eccentric portion of the rotary operation plate is supported inside the eccentric cam shaft to support the tip side of the eccentric cam shaft. The vertical movement lock of the lead cam shaft is formed on the inner surface of the support plate. The height of the eccentric cam shaft is adjusted by locking the projection in the valley of the chrysanthemum formed in the stepped hole, and the operation tool is adjusted in the recess formed on the outer surface of the rotary operation plate. It is configured such that it is operated by rotating the support plate while operating the tip end of the protrusion in the rotation direction, and the elastic force of the raw material by this rotation force causes the protrusion to pass over the crest of the chrysanthemum and rotate the support plate. A door roller with adjustable wheel height. 2. An arcuate step in which a rotatable operation range of the rotary operation plate is such that a projection formed on a lower step surface in a stepped hole supporting the rotary operation plate is formed on an inner surface of the rotary operation plate. The door roller with adjustable wheel height according to claim 1, which is configured to be performed within a range of parts. 3. The wheel height adjustment according to claim 1, wherein the hollow hole formed in the eccentric cam shaft is a square hole, and the eccentric support shaft is a square rod shape along the hollow hole. A door car that can 4. The height adjustment of the wheel according to claim 1, wherein the projections that are locked in the valleys of the chrysanthemums are formed by the chrysanthemums that are opposed and locked to the chrysanthemums. Possible door car. 5. A projection, a ridge, etc. for securing the door case when it is fitted in the recess of the sliding door at a proper position between the left and right outer walls facing the traveling direction of the door case and the upper surface. 5. The door roller according to any one of claims 1 to 4, wherein a height preventing portion is formed.