JPH0446466Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Technical field> This invention allows the height of the wheels to be adjusted up and down.
This invention relates to a door wheel equipped with a wheel vertical adjustment mechanism.

<Prior Art> Conventionally, in the door roller with a vertical adjustment mechanism as described above, various structures have been proposed as the vertical adjustment mechanism for vertically adjusting the wheel. Some wheels are moved up and down by rotating an adjustment screw attached to the wheel. Specifically, in 1977-
This method is disclosed in Japanese Patent Publication No. 27045, Japanese Patent Publication No. 60-7115, etc., in which a wheel holding frame and an adjustment screw are screwed together, and the screwing position with the holding frame is adjusted by rotating the adjustment screw. The wheel can be adjusted up and down by changing the holding frame and moving the holding frame.

The head of the adjustment screw is exposed at the longitudinal side end of the door roller case, and the adjustment screw is rotated with a screwdriver or the like from the side end of the sliding door to which the door roller case is attached.

However, since the adjustment screw is operated from the side edge of the sliding door, if the opening and closing of the sliding door is restricted, such as when the sliding door cannot be left open, the adjusting screw must be operated when the sliding door is installed in the door frame. Sometimes it was difficult, and I had to remove the sliding door from the door frame one by one and then adjust the wheels up and down.

In addition, even if you adjust the door roller up and down with the sliding door removed from the door frame, it is difficult to tell how the door roller and sliding door rail are touching each other and the distortion of the installation. It was very troublesome as it was necessary to make adjustments while checking the actual conditions.

<Purpose> Therefore, the purpose of this invention is to solve the above-mentioned problems of the prior art and to provide a door roller that allows the wheels of the door roller to be adjusted up and down from the front or rear while the sliding door is attached to the door frame. It's about doing.

<Structure> In order to achieve the above object, the door wheel with a vertical adjustment mechanism of this invention has a first spur gear fixed to the adjustment screw so as to rotate together with the adjustment screw, and the front and back surfaces of the door wheel case. A second spur gear is rotatably disposed on the inner surface of one or both of the first and second spur gears so as to be orthogonally meshed with the first spur gear. The door roller case is characterized in that it is provided with a groove or a protrusion for use, and that the groove or protrusion is exposed from the installation surface of the door roller case.

<Example> Next, an example of this invention will be described below with reference to the drawings.

FIG. 1 shows the door roller in a disassembled state. 1
1 is a wheel, which is made of metal or plastic, as is the case with ordinary door rollers, and 10 is an axle protruding from both sides of the center of the wheel 1.

Reference numeral 2 designates a holding frame for the wheel 1, which is formed by bending a pair of plates into a substantially U-shape, and has diagonal grooves 20 formed on both opposing surfaces into which the axle 10 can be inserted. The lower end of the oblique groove 20 is bent horizontally to form an opening at one end of the holding frame 2, and the axle 10 of the wheel 1 can be inserted through this opening. Reference numeral 21 denotes a screw hole for screwing in an adjustment screw 4, which will be described later, and is formed through the center of the side end surface of the holding frame 2.

Reference numeral 3 denotes a door roller case, which is shaped like an elongated rectangular tube box and houses the holding frame 2 together with the wheels 1 inside. Reference numeral 30 denotes a guide projection of the holding frame 2, which is formed protrudingly on the inner side of the upper surface of the door roller case 3, and is brought into contact with the upper end of the holding frame 2 to restrict upward movement. 39a are pins cut and raised on the front and rear surfaces of the door roller case 3, and are brought into contact with the upper ends of the horizontal portions of the oblique grooves 20 to restrict downward movement of the holding frame 2. The guide projection 30 and pin 39a allow the holding frame 2 to move only in the horizontal direction. 31 is a vertical groove, and door roller case 3
A notch is formed at the lower part of the front and rear sides of the wheel, through which the axle 10 can be inserted. Further, the front and back surfaces of the door wheel case 3 are provided with operating holes 35, 35 for rotating second spur gears 7, 7, which will be described later, with an operating tool such as a screwdriver. Further, the back side of the door roller case 3 has a vertically long insertion groove 38 through which the U-shaped fixing member 36 can be inserted, and the front side of the door roller case 3 has an insertion hole through which the two leg portions of the U-shaped fixing member 36 can be inserted. 37, 37 are provided. Further, the U-shaped fixing member 36 is provided with a U-shaped groove 39 through which an adjustment screw 4, which will be described later, is passed. Horizontal rectangular mounting pieces 32, 32' are provided at the lower part of the longitudinal direction (prospective direction) side end of the door roller case 3.
is extended, and the door roller can be screwed to the sliding door using mounting holes 33, 33' formed in the mounting pieces 32, 32'. 34 is an adjustment screw 4 formed on the longitudinal side end surface of the door roller case 3.
This is the insertion hole.

Reference numeral 4 designates an adjustment screw whose tip is threaded and has a flange 41 formed in the middle, and is inserted from the insertion hole 34 in a direction perpendicular to the axle 10 of the wheel 1;
That is, it is inserted so as to be rotatable in a horizontal state along a direction perpendicular to the thickness direction (indication direction) of the door roller. Note that a groove 42 is provided on the head side of the adjustment screw 4 so that the adjustment screw 4 can be rotated with a screwdriver or the like.

Reference numeral 5 denotes a first spur gear, which is fitted and fixed at a position in the middle of the adjustment screw 4 and a predetermined distance away from the tip side than the position where the flange 41 is formed.
3 and the keyway 51, the adjustment screw 4 and the first spur gear 5 reliably rotate together.

Next, 6 is a positioning frame, which has a small U-shape that can be accommodated inside the door roller case 3. Grooves 63, 63 are provided on the front side and back side of the positioning frame 6, through which the U-shaped fixing member 36 inserted from the insertion groove 38 of the door roller case 3 passes. , 63, the positioning frame 6 is positioned at a predetermined position within the door roller case 3 so as not to move in the horizontal direction.

On the front side and back side of the positioning frame 6, a second
Storage recesses 61, 61 are formed in which the spur gears 7, 7 are rotatably stored with some play. This second spur gear 7 is formed with a cross groove-shaped rotation operation groove 71 into which an operation tool such as a screwdriver can be engaged through the operation hole 35 . Furthermore, the side wall 60 of the positioning frame 6 is formed with an insertion hole 62 through which the flange 41 of the adjustment screw 4 is passed.

The state in which each of the parts explained above is assembled is shown in the second section.
4, a holding frame 2 is housed inside a door roller case 3, a wheel 1 is housed inside the holding frame 2, and an axle 10 of the wheel 1 is attached to the holding frame 2.
and the vertical groove 31 of the door roller case 3. Therefore, the position of the axle 10 is regulated by both the oblique groove 20 of the holding frame 2 and the vertical groove 31 of the door roller case 3.

In addition, the adjustment screw 4 is inserted into the insertion hole 3 of the door roller case 3.
4 and the insertion hole 62 of the positioning frame 6, and insert it into the screw hole 21 of the holding frame 2 with the U-shaped fixing member 36 sandwiched between the flange 41 of the adjustment screw 4 and the first spur gear 5. Screwed together. In this way, adjust screw 4
The U-shaped fixing member 36 is sandwiched between the flange 41 and the first spur gear 5, and as described above, the U-shaped fixing member 36 is fixed to the door wheel case 3. Therefore, even if the adjustment screw 4 rotates, it does not always move in the front-rear direction with respect to the door roller case 3.

The second spur gears 7, 7 are respectively stored in spaces defined by storage recesses 61, 61 of the positioning frame 6 and the front and rear walls of the door roller case 3, and are fitted and fixed to the adjustment screws 4. It meshes with the first spur gear 5 in a perpendicular state (see FIG. 4). The rotation operation grooves 71, 71 are exposed through operation holes 35, 35 formed on the front and back surfaces of the door roller case 3.
(See Figure 2). The diameter of the operation hole 35 is formed smaller than the outer diameter of the second spur gear 7, so that the second spur gear 7 does not protrude from the operation hole 35.

In this invention, since a pivot shaft for the second spur gear passing through the front and back surfaces of the positioning frame 6 is not provided, when determining the formation position of the storage recess 61, the adjustment screw 4 and the above-mentioned pivot shaft are not provided. There is no need to consider collision with the support shaft. Therefore, in this invention, the height of the center of the storage recess 61 is set at the same height as the adjustment screw 4 (see FIG. 4), so that the meshing between the first spur gear 5 and the second spur gear 7 is improved. It can be done smoothly.

As mentioned above, the second spur gear 7 is stored in the storage recess 61 with some play so that it can rotate, so if it meshes too closely with the first spur gear 5, it may not mesh smoothly. It becomes impossible to rotate. Therefore, it is preferable that the tooth pitches of both the second spur gear 7 and the first spur gear 5 are formed to be slightly larger with a margin.

Next, the above-mentioned vertical adjustment function of the door roller will be explained.

First, in order to move the wheel 1 up and down, the holding frame 2
may be moved horizontally inside the door roller case 3. That is, the axle 10 is inserted into the oblique groove 20 of the holding frame 2 and the vertical groove 31 of the door roller case 1.
is connected to the axle 10 by the vertical groove 31 of the door roller case 1.
Since movement in the horizontal direction is restricted, when the holding frame 2 moves horizontally, the diagonal groove 20 of the holding frame 2
The axle 10 and the wheel 1 move up and down as the oblique groove 20 inclines.

In order to horizontally move the holding frame 2,
By rotating the adjusting screw 4 screwed into the screw hole 21 of the holding frame 2, the screwing position between the adjusting screw 4 and the holding frame 2 is moved. As mentioned earlier, the adjustment screw 4 is fixed to the door roller case 3, so
The holding frame 2 is pulled toward or pulled away from the adjustment screw 4, and the holding frame 2 moves horizontally.

Furthermore, the second spur gear 7 meshing with the first spur gear 5 is rotated by rotating the rotation operation groove 71 of the second spur gear 7 exposed on the front or back side of the door wheel case 3.
By rotating the adjustment screw 4, the adjustment screw 4 can be rotated.

Therefore, by simply rotating the rotation operation groove 71 of the second spur gear 7 from the front or back of the door roller case 3, the wheel 1 moves up and down, and the vertical position of the wheel 1 can be freely adjusted. It can be done.

Note that the groove 42 provided on the head side of the adjustment screw 4
The wheel can be adjusted up and down by directly rotating the wheel, so the second spur gear 7 can be used to rotate the door wheel from the front, and the adjustment screw 4 can be used to rotate it from the side of the door wheel. You can choose.

FIG. 5 shows an embodiment in which two wheels are provided. Reference numerals 101 and 101 are wheels, and 111 is a wheel holder that pivotally supports the wheels 101 and 101, and a vertical elongated hole 113 into which the connecting pin 110 is inserted is formed in the center. A pin 112 is cut and raised on the inner surface of the wheel holder 111, and a leaf spring 114 for shock absorption is placed on the pin 112 so that the connecting pin 110 is supported between the leaf spring 114 and a diagonal groove 120, which will be described later. I have to.

The holding frame 102 holds the wheel holder 111, and on both opposing surfaces of the holding frame 102, a diagonal groove 120 through which the connecting pin 110 can be inserted is formed, and a screw hole for screwing the adjustment screw 104 is formed. A fixing pin 121 having a diameter of 123 is attached to the holding frame 102
It is fixed through holes 122 formed on both opposing surfaces of the.

The door roller case 103 houses the wheels 101, the wheel holder 111, and the holding frame 102 therein, and has vertical grooves 131 formed in the front and back surfaces of the door roller case 103, into which the connecting pins 110 are inserted. Reference numeral 134 indicates an insertion hole for the adjustment screw 104 formed on the side end surface in the longitudinal direction of the door wheel case 103, and reference numerals 135 and 135 indicate operation holes for the second spur gears 107 and 107 formed on the front and back surfaces.
Further, on the back side of the door roller case 103, there is a vertically long insertion groove 138 through which the U-shaped fixing member 136 can be inserted.
There is a U-shaped fixing member 13 on the front of the door roller case 103.
Insertion holes 13 through which the two leg parts of 6 can be inserted respectively.
7,137 are provided. Next, as in the previous embodiment, a small U-shaped positioning frame 106 that can be accommodated inside the door roller case 103 is provided.
Insertion holes 162, 163 for inserting the second spur gears 107, 107 and storage recesses 161, 161 for storing the second spur gears 107, 107 are formed on the front side and the back side.
The adjustment screw 104 has a relatively small diameter head 141a,
The head 141a is divided into a relatively large-diameter rod portion 141b extending from the head 141a to an intermediate portion, and a relatively small-diameter rod portion 141c extending from the head portion 141b to the tip.
A groove 143 is provided on the side that can be rotated with a screwdriver or the like, and the tip of the small diameter rod portion 141c is threaded. Further, a flange portion 142 is provided at a portion near the head side of the small diameter rod portion 141c to sandwich the U-shaped fixing member 136 between it and the end surface of the large diameter rod portion 141b. It is formed at a constant distance from the end face. Immediately beyond the collar 142,
The first spur gear 105 can mesh with the second spur gear 107
are fitted and fixed so that they rotate together. In addition,
The insertion hole 163 has a diameter that allows the small diameter rod portion 141c to pass through, and the insertion hole 162 has a diameter that allows the flange portion 142 and the large diameter rod portion 141b to pass through.
It has a slightly larger diameter.

The state in which each of the parts explained above is assembled is shown in the sixth section.
It is shown in FIG. A holding frame 102 is housed inside the door roller case 103, and the holding frame 102
A wheel holder 111 is housed inside, and the connecting pin 110 is inserted into the oblique groove 120 of the holding frame 102 and the vertical groove 131 of the door roller case 103. Therefore, the position of the connecting pin 110 is between the diagonal groove 120 of the holding frame 102 and the door roller case 103.
It is regulated by both vertical grooves 131.

The adjustment screw 104 is inserted horizontally into the insertion hole 134 of the door roller case 103 and the insertion hole 162 of the positioning frame 106, and a U-shaped fixing member 136 is inserted between the tip side end surface of the large diameter rod portion 141b and the flange portion 142. is screwed into a screw hole 123 of a fixing pin 121 fixed to the holding frame 102 while being held therein. The second spur gears 107, 107 are located in the space defined by the storage recesses 161, 161 of the positioning frame 106 and the front wall and rear wall of the door wheel case 103.
They are stored in a state of orthogonal meshing with the spur gear 105, and grooves 171, 17 for rotation operation such as cross grooves are provided.
1 are exposed through operation holes 135, 135 formed on the front and back surfaces of the door roller case 103 (see FIG. 6).

In the door wheel described above, the second spur gear 107 is rotated by turning the rotation operation groove 171 exposed from the operation hole 135, and this rotation is controlled by the adjustment screw 104.
By horizontally moving the holding frame 102, the connecting pin 110 regulated by the diagonal groove 120 and the vertical groove 131 can be moved up and down. When the connecting pin 110 moves upward, the pressing force on the leaf spring 114 is relaxed and the wheels 101,
Since the wheel holder 101 is pulled up together with the wheel holder 111, the vertical position of the wheels 101, 101 can be adjusted.

Note that the vertical adjustment of the wheel can also be performed by directly rotating the groove 143 provided in the head 141a of the adjustment screw 104.

As described above, it is only necessary to rotate the spur gears 7, 107 stored in the storage recesses 61, 161, and as disclosed in the specification of Utility Model Application No. 1987-70818,
A pivot shaft passing through both opposing surfaces of the positioning frame is provided, and there is no need to provide a worm or bevel gear on the pivot shaft. Therefore, the structure is extremely simple, which not only reduces the probability of failure but also reduces the number of parts, leading to a reduction in manufacturing costs.

Note that this invention is not limited to the above-mentioned embodiment, and the mechanism for moving the wheel up and down by the rotation of the adjustment screw may be the holding frame 2 shown in the drawing,
102 diagonal grooves 20, 120 and door roller cases 3, 1
In addition to the structure in combination with the vertical grooves 31 and 131 of No. 03, for example, as disclosed in Japanese Utility Model Application Publication No. 47-27045, a holding frame to which a wheel is attached is rotatably supported at one point. , a structure in which the door wheel is rotated by an adjustment screw to move up and down, and a structure similar to that of a known door wheel with a vertical adjustment mechanism can be used.

In addition to the horizontal direction shown in the figure, the adjustment screw can be mounted vertically above the wheel, as disclosed in Japanese Utility Model Application Publication No. 49-41843. Those with a structure that can be moved up and down with a direct adjustment screw, and those with a structure that can be moved up and down with a direct adjustment screw,
As disclosed in the above publication, the adjustment screw may be mounted on the side of the wheel in a vertical direction from the bottom surface of the door roller.

In addition, a second
Storage recesses 61, 16 for storing spur gears 7, 107
1 may be formed only on either the front side or the back side so that it can be rotated from the front or the back side, thereby reducing the number of parts.

Furthermore, the rotation operation grooves 71, 171 formed in the second spur gears 7, 107 are not limited to the cross-shaped grooves as shown in the figure, but may be minus-shaped grooves. Furthermore, as long as it can be rotated from the outside, a square projection or the like that can be operated by turning a nut or the like may be used instead of the groove.

In addition, in the double-wheel type embodiment, the door roller case 103
If there is no need to adjust the vertical direction from the longitudinal direction, there is no need to form the insertion hole 134 on the side end surface of the door roller case 103, leaving a part of the large diameter rod part 141b and removing the part from the head side. , it is sufficient to use a short adjustment screw. In this way, the number of parts can be reduced and costs can be reduced.

Various other design changes can be made without changing the gist of the invention.

<Effects> According to the door roller with a vertical adjustment mechanism of this invention configured as described above, an adjustment screw installed in a direction perpendicular to the thickness direction of the door roller is provided on either or both of the front and back surfaces. Since the sliding door is configured to mesh with the second spur gear, the groove or protrusion for rotation of the second spur gear exposed on the door wheel can be rotated with a screwdriver, etc. while the sliding door is installed in the door frame. You can adjust the wheels up and down with just one button.

Therefore, as in the past, the operating parts for the adjustment screws are located on the side edges and upper and lower ends of the door roller, making it difficult to adjust the sliding door while it is still installed. This eliminates the inconvenience of having to perform adjustment work. In addition, by being able to adjust the door roller up and down while the sliding door remains attached to the door frame, it becomes possible to perform adjustment work extremely accurately while observing how the sliding door is installed, improving work efficiency. Become.

Moreover, in this invention, the conventional mechanism can be used as is for the wheel vertical adjustment mechanism itself, and the first spur gear and the second spur gear are connected to the adjustment screw.
It is only necessary to add a rotation direction conversion mechanism consisting of a spur gear, and the advantages of conventional various vertical adjustment mechanisms can be utilized as is, and the entire door wheel structure is simple and easy to manufacture, making it suitable for various practical applications. It has excellent value.

[Brief explanation of the drawing]

The figure shows an example of this invention.
The figure is an exploded perspective view, Figure 2 is a perspective view of the assembled state, Figure 3 is a sectional view, Figure 4 is an enlarged view of main parts, Figure 5 is an exploded perspective view of another embodiment, and Figure 6 is assembled. A perspective view of the state, and FIG. 7 is a sectional view. 1...Wheel, 2...Holding frame, 3...Door wheel case, 4...Adjustment screw, 5...First spur gear, 7...
Second spur gear, 71... Groove for rotation operation.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A holding frame with wheels attached is mounted inside the door roller case, and the holding frame is moved by rotating an adjustment screw provided along one direction perpendicular to the thickness direction of the door roller. In a door wheel with a vertical adjustment mechanism that allows the wheels to be adjusted up and down, a first spur gear is fixed to the adjustment screw so as to rotate together with the adjustment screw, and a first spur gear is fixed to the adjustment screw so as to rotate along with the adjustment screw, and a Alternatively, a second spur gear is rotatably disposed on the inner surface of both so as to be orthogonally meshed with the first spur gear, and the second spur gear has a groove or a protrusion in the center for rotation operation. 1. A door wheel with a vertical adjustment mechanism, characterized in that the groove or protrusion is exposed from the installation surface of the door wheel case. 2. The door roller with a vertical adjustment mechanism according to claim 1 of the above-mentioned utility model registration claim, wherein the wheel is a single wheel. 3. The door wheel with a vertical adjustment mechanism as set forth in claim 1 of the above utility model registration claim, wherein the wheels are composed of double wheels.