JPH0128215Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a door roller device of this kind that can be attached to a lightweight sliding door such as a screen door and can transmit power to any rail, whether uneven or convex.

[Conventional technology]

In the conventional door wheel device of this type, a shaft cylinder with side wheels is attached to both ends of the shaft cylinder, and the shaft cylinder with side wheels is fitted on the front and rear inside of a tilted groove-shaped support frame, and the support frame is fitted into the lower stile at the lower end of the sliding door. The shaft cylinder between the side wheels is transmitted to the convex rail, and the left and right side wheels are transmitted to the concave rail.

[Problem that the invention attempts to solve]

However, since the shaft cylinder with the left and right side wheels is fitted into the support frame in this way, the width of the shaft cylinder itself is narrow because it is a standard width lower sill, and therefore the left and right side wheels easily slide into contact with the thick convex rail. Therefore, smooth transmission cannot be expected, and even in the case of concave rails, if the rail width is narrower than the width between the left and right wheels, transmission becomes impossible, and there are major disadvantages of being limited by the thickness and width of the rail.

In order to eliminate the above-mentioned disadvantages, the present invention proposes a door roller device that is particularly suitable for lightweight sliding doors such as screen doors so that power can be transmitted over a wide range of both thick and thin convex rails and wide and narrow concave rails. This is what I did.

[Means for solving problems]

A support frame having a U-shaped cross section and having notched circular recesses formed on the front and rear outer walls in the longitudinal direction is provided, and a roller wheel fixed concentrically to the outer end of the shaft cylinder is installed in each of the recesses of the support frame. The support frame is fitted into the lower stile of the lightweight sliding door by inserting the end of the support shaft with a hemispherical head interposed therebetween and passed through the center shaft hole of the roller through the shaft cylinder into the opposite inner wall. The hemispherical head of the outer end of the support shaft is pressed against the inner wall of the lower stile.

[Effect]

Since the present invention is constructed as described above, the door roller installed in the support frame is a rolling wheel only at one end of the shaft tube, and since the wheel is interposed in the recess of the support frame, the door roller installed in the support frame is a roller at only one end of the shaft tube. The width is extremely wide, so it can be transmitted to thick convex rails, and in the case of concave rails, there is only one wheel, so it can be transmitted even to extremely narrow concave rails, so it can be transmitted to thick convex rails and wide and narrow concave rails. It has the advantage that it can be used as widely as possible.

However, the door roller in this case is supported at two points, with the hemispherical head of the outer end of the shaft being pressed against the inner wall of the lower stile against the end of the shaft inserted into the inner wall of the support frame, so it can be used for lightweight sliding doors such as screen doors. In this case, it has the effect of smooth transmission without any problems.

〔Example〕

A support frame 3 made of synthetic resin is provided which has a U-shaped cross section and has a notched circular recess R formed in the front and rear outer walls 3' in the longitudinal direction, and in each of the recesses of the support frame,
A roller 5 fixed concentrically to the outer end of the shaft tube 4 is interposed, and a support shaft 6 with a hemispherical head 6' is passed through the center shaft hole h of the roller through the shaft tube 4 to form a protruding end thereof. is inserted into the inner wall 3'' of the support frame 3, and the support frame is fitted into the groove H of the lower stile 2 of a lightweight sliding door 1 such as a screen door, and the hemispherical head 6' at the outer end of the support shaft 6 is inserted. is pressed into contact with the inner wall of the groove, and in the drawings, L indicates a convex rail and L' indicates a concave rail.

[Brief explanation of the drawing]

Figure 1 is a front view of a screen door equipped with the present invention, Figure 2 is an enlarged slope view of the main part of the support frame in the door roller device of the present invention, and Figure 3 is an embodiment of the present invention taken longitudinally along line X-X in Figure 2. A is a side view showing a state in which the shaft cylinder is transmitted on a convex rail, and B is a side view showing a state in which a roller is transmitted on a concave rail. 1 is a sliding door, 2 is a lower stile, 3 is a support frame, 3' is an outer wall, 3'' is an inner wall, 4 is a shaft cylinder, 5 is a rolling wheel, 6 is a support shaft, 6' is a hemispherical head, H is a concave groove, and R is a circular concave portion.

Claims (1)

[Scope of utility model registration request] A support frame having a U-shaped cross section and having notched circular recesses formed on the front and rear outer walls in the longitudinal direction is provided, and a roller wheel fixed concentrically to the outer end of the shaft cylinder is installed in each of the recesses of the support frame. The supporting frame is fitted into the lower frame of the lightweight sliding door by inserting the protruding end of a supporting shaft with a hemispherical head interposed therebetween and passed through the central shaft hole of the roller through the shaft cylinder into the opposite inner wall. The door roller device of the sliding door that arrived.