JP4965882B2 - Door car device - Google Patents

Description

  The present invention relates to a door roller device that is attached to a corner of a door such as a sliding door and moves the door smoothly.

  2. Description of the Related Art Conventionally, a frame-like traveling body with wheels attached thereto is pivotally supported by projecting the wheels from the lower edge surface in a case having at least a lower surface opened, and the frame-like traveling body with wheels attached to the shaft. There is known a door drive device having a structure in which adjustment screws for adjusting the height of the wheel to be supported and the left and right positions are mounted (for example, JP 2002-70402 A).

  And in such a door machine apparatus, in order to facilitate manufacture and to provide a product at a low cost, a case in which a case that supports a wheel that supports a wheel is formed of a hard synthetic resin material is used. ing.

However, in general, inexpensive synthetic resin materials are fragile, so the strength of the molded case is low, and a heavy load is applied because the heavy door is supported like the case in the above-described door drive device, especially with wheels attached. The portion that supports the body is the place where the weight of the door is most applied, and cannot be said to have sufficient strength when used for a long time or when a large external force is applied.
JP 2002-70402 A

  The present invention is intended to solve the problems of a door machine having a conventional resin case as described above, and not only can withstand the weight and impact applied even if the majority of the case is made of resin, An object of the present invention is to provide a door drive device that can be provided at low cost.

The present invention, which has been made to solve the above-mentioned problems, is supported by a frame-like traveling body attached with wheels, which is pivotally supported by protruding the wheels from the lower edge surface in a resin case having at least a lower surface opened. The mounting position of the frame-shaped traveling body to which the wheels are attached can be adjusted by an adjusting screw mounted on the front surface of the resin case, and the support shaft that pivotally supports the traveling body is the resin case. In a door roller apparatus supported by shaft holes formed in a pair of support plates respectively disposed at the front lower ends of both sides of the resin case made of metal fixed to the shaft, the shaft having at least the shaft holes of the support plates The support portion is disposed outside the resin case, and the shaft support portion having the shaft hole of the support plate is disposed so as to be flush with the front surface portion and the side surface of the resin case .

  According to the present invention, the metal support plate is fixed to a part of the resin case, and the metal support plate supports both ends of the support shaft of the traveling body having a frame shape with wheels attached thereto. Even when the strength is increased and a large force is applied to the portion, it can be sufficiently tolerated. That is, by supporting the both ends of the support shaft to which the weight of the door is applied most with the metal support plate, the support strength is enhanced, and the load bearing device is constructed. Therefore, it is optimal as a heavy door door device. In addition, since the main part (most part) of the case is made of a relatively inexpensive resin, the apparatus becomes inexpensive.

  In the case where the metal support plate is formed integrally with a front portion covering the front surface of the resin case and a support portion of a support shaft respectively disposed at a front lower end portion of both sides of the resin case. In addition to enhancing the strength of the case front portion and the support shaft support portion, the appearance of a metal surface on the case front portion is beautiful and luxurious.

  In addition, the support plate made of metal is disposed on a horizontal piece-like connecting portion fitted in a groove portion formed in a lateral direction on the front surface of the resin case and on a front lower end portion on both side surfaces of the resin case. When the support portion is formed continuously and integrally, a sufficient strength can be obtained by supporting the support shaft with a relatively small amount of metal material.

  Furthermore, when the metal support plate is composed of a pair of support portions respectively disposed at the front lower end portions on both sides of the resin case, both ends of the support shaft can be strongly supported even with a support plate having a small area. It can be done. Therefore, sufficient support strength can be obtained with a minimum amount of metal material.

  According to the present invention having the above-described means, most of the case is made of resin and the weight-added portion is reinforced with the metal support plate, so that it is inexpensive and has excellent load resistance.

  Hereinafter, embodiments of the present invention shown in the drawings will be described.

  1 is a side view of a door machine according to an embodiment of the present invention, FIG. 2 is a sectional view along the side, FIG. 3 is a front (front) view, FIG. 4 is a rear view, and FIG. FIG. 6 is an enlarged cross-sectional view of the main part along the side surface, FIG. 7 is an enlarged cross-sectional view of the main part along the front surface, and FIG. 8 is an exploded perspective view of the main part.

  The door pulley apparatus shown in the present embodiment is mainly a frame-shaped traveling body with a resin-made case 1, a frame-shaped traveling body 3 with wheels 2 attached thereto, and the wheels 2 fixed to a part of the resin-made case 1. It comprises a metal support plate 5 for supporting the body 3.

  The resin case 1 is made of, for example, a synthetic resin such as polyamide or polyacetal, and has a substantially bowl-like appearance. The resin case 1 has a frame-shaped traveling body 3 in which a wheel 2 is pivotally supported on a shaft pin 6. More specifically, a substantially chair-shaped metal support plate 5 having a front plate portion 5a that covers the front surface portion 1a of the resin case 1 and shaft support portions 5b and 5b of the support shaft 4 of the traveling body 3 extending to the front lower ends of the two cases. It is fixed.

  Further, on the front surface portion 1a of the resin case 1 to which the metal support plate 5 is fixed, a vertical adjustment screw 7 and a left / right adjustment screw 8 for adjusting the vertical position and the horizontal position of the wheel 2 supported by the traveling body 3 are provided. The vertical adjustment mechanism 9 including the vertical adjustment screw 7 and the horizontal adjustment screw 8 and the horizontal adjustment mechanism 10 are built in the resin case 1.

  The vertical adjustment mechanism 9 in the present embodiment is composed of a vertical adjustment screw 7 made of a screw screw and a moving piece 11 screwed to the screw, and when the vertical adjustment screw 7 is turned to the left and right, an upper notch of the frame-like traveling body 3 is formed. The movable piece 11 engaged with 3a moves back and forth, and the frame-shaped traveling body 3 rotates up and down to adjust the vertical position.

  The left / right adjusting mechanism 10 includes a flat left / right adjusting screw 8, a disc 12 eccentrically provided at the tip thereof, and a slider 13 having a substantially elliptical hole 14 sandwiched in the frame-like traveling body 3. Has been. When the left / right adjustment screw 8 is rotated left and right, the eccentric disc 12 is rotated, and the frame-like traveling body 3 to which the slider 13 is attached moves to the left and right to adjust the left / right position. Further, a friction plate 15 and a coil spring 16 are interposed between the metal support plate 5 and the slider 13 to lock the wheel 2 at a desired adjustment position by engaging the biasing force of the coil spring 16 and the friction plate 15 at an arbitrary position. Can be set to

  The metal support plate 5 is, for example, as shown in FIG. 8, a vertical adjustment screw that is attached to the front surface portion 1 a of the resin case 1 on a front plate portion 5 a that covers the front surface portion 1 a of the resin case 1. 7 and exposure holes 5c and 5d of the left and right adjustment screw 8 and an exposure hole 5e of the mounting screw 17 for attaching the door machine device to the door shown in FIGS. 1 to 3, respectively, are formed in the shaft support portions 5b and 5b. Are formed with shaft holes 5f and 5f for supporting the support shaft 4 of the traveling body 3, respectively.

  Further, in the present embodiment, fitting grooves 1b, 1b of shaft support portions 5b, 5b formed integrally with the lower portion of the metal support plate 5 are formed below the front surface portion 1a of the resin case 1. The metal support plate 5 can be fixed to the resin case 1 with a simple configuration and in an extremely stable state. For fixing the metal support plate 5 to the resin case 1, various conventionally known fixing means such as fitting, bonding, and welding can be used.

  As described above, according to the present embodiment, the front plate portion 5a covers the entire front surface portion 1a of the resin case 1, and the shaft support portions 5b and 5b formed integrally with the front plate portion 5a are extremely stable. In addition to having a load resistance that does not cause cracks in the resin case 1 even when used for a long period of time, it is also aesthetically pleasing since the entire case front 1a is a metal surface. The luxury is enhanced.

  FIG. 9 shows a door apparatus according to another embodiment of the present invention. A groove portion 18b is formed at the lower end portion of the front surface portion 18a of the resin case 18, and a metal support plate 19 is formed in the groove portion 18b. The horizontal piece-shaped connecting portion 19a is attached and fixed, and a substantially three-dimensional H-shaped metal support plate 19 that covers the vicinity of both ends of the support shaft across the case front surface portion 18a is provided. According to the apparatus, the strength for supporting both ends of the support shaft of the support plate on which the wheel is mounted with a relatively small amount of metal material can be obtained.

  Further, FIG. 10 shows a door cart apparatus according to still another embodiment of the present invention, wherein mounting notches 21a and 21b are formed at the lower end of the front portion 20a of the resin case 20, and are supported by the mounting notches 21a and 21b. A pair of metal support plates 22 that cover the vicinity of both ends of the shaft are mounted and fixed, and the support shaft of the support plate is supported by the metal support plate 22.

  According to the door pulley device of this embodiment, sufficient strength to support both ends of the support shaft of the frame-like traveling body with wheels attached with a smaller amount of metal material can be obtained.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, For example, although the attachment screw for attaching a door-drive apparatus is one in embodiment, two are provided. The configuration of the other parts may be arbitrarily changed according to the place of use, application, and the like.

It is a side view of the door machine concerning the excellent embodiment of the present invention. It is sectional drawing along the side surface of FIG. FIG. 2 is a front (front) view of FIG. 1. It is a rear view of FIG. It is a bottom view of FIG. It is an expanded sectional view of the principal part along the side surface about embodiment shown in FIG. It is an expanded sectional view of the principal part along the front about the embodiment shown in FIG. It is a disassembled perspective view of the principal part in embodiment shown in FIG. It is a disassembled perspective view of the principal part of the door machine which concerns on embodiment different from this invention. It is a disassembled perspective view of the principal part of the door machine which concerns on further different embodiment of this invention.

Explanation of symbols

1,18,20 resin case, 1a front part, 2 wheels, 3 frame-shaped running body, 4 support shaft, 5,19,22 metal support plate, 7 vertical adjustment screw, 8 horizontal adjustment screw

Claims (1)

A frame-like traveling body to which a wheel is attached is pivotally supported by protruding the wheel from a lower edge surface in a resin case having at least a lower surface opened, and the frame-like traveling body to which the wheel is attached is attached. The position can be adjusted by an adjustment screw attached to the front surface of the resin case, and a support shaft that pivotally supports the traveling body is made of metal on both sides of the resin case fixed to the resin case. In the door cart apparatus supported by the shaft holes formed in the pair of support plates respectively disposed at the front lower end portions, the shaft support portions having at least the shaft holes of the support plates are disposed outside the resin case and A door drive device characterized in that a shaft support portion having a shaft hole of a support plate is disposed so as to be flush with a front surface portion and a side surface of the resin case .

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