JPH0738533U - Rail for door car - Google Patents

Abstract

(57) [Abstract] [Purpose] Derailment can be effectively prevented by restricting the lateral movement of the wheels of the door roller, and it can be manufactured at low cost, and it also hinders opening and closing the door. Provide a door rail with a new structure that does not give. [Structure] A V groove is formed on the upper surface of the rail body 1,
A rail for a door roller configured such that the outer peripheral portion of the wheel 5 of the door roller is brought into contact with the inner inclined surfaces 2 and 2 of the groove, and the rising portions 3 are provided at the tops of both ends of the inner inclined surface of the V groove.
By providing 3, the lateral movement of the wheels is restricted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door rail for a sliding door, a window, a movable partition or the like.

[0002]

[Prior art]

 As shown in FIG. 6, a conventional door rail generally has a V-groove formed on an upper surface of a rail main body 1. The rail main body 1 is placed at a predetermined position corresponding to a wheel 5 of the door roller, and a floor base 5 is formed. It is configured to be embedded and fixed in the V groove and to be rolled while the outer peripheral portion of the wheel 5 is in contact with the inclined surfaces 2 and 2 of the V groove.

Since the door rail of this structure is such that the door wheels are housed in the V-groove which is relatively shallow and has an inclined surface, the door rail is laterally moved by a person leaning on or hitting the door. There was a problem that the bicycle would easily derail when a load was applied to it.

In order to solve this problem, a ridge is provided at the bottom of the V groove, and a groove for fitting the ridge is provided in the center of the outer peripheral portion of the wheel (see Japanese Utility Model Laid-Open No. 4-30680). On the contrary, by forming a groove that further penetrates into the bottom of the V groove and providing a ridge that fits in the groove at the center of the outer peripheral portion of the wheel (see Japanese Utility Model Laid-Open No. 4-30681). It has been proposed that the lateral movement of wheels be regulated to prevent wheel loss.

[0005]

[Problems to be solved by the device]

 However, the technology for preventing wheel slippage by the above method requires groove processing or ridge processing on the rail body and wheels, respectively, which makes it difficult to give them the required processing accuracy and avoids cost increases. I can't. In addition, the rail body and the wheels need to be made large in order to compensate for the decrease in strength due to these processes.

Further, not only the wheel comes into contact with the inclined surface of the V groove, but also the contact between the groove and the ridge is unavoidable, so that the friction hinders the rolling of the wheel and the opening and closing of the door. The drawback is that the operation becomes heavy.

[0007]

[Means for Solving the Problems]

 Therefore, the present invention solves the above-mentioned problems of the prior art, exerts an excellent wheel removal prevention effect only by performing a simple processing on the rail body, does not increase the cost, and smoothly rolls the wheels. It is an object of the present invention to provide a door rail with a new structure that does not impair movement.

To achieve this object, the door rail according to the present invention has a V groove formed on the upper surface of the rail body, and the outer peripheral portion of the wheel of the door roller rolls while contacting the inner inclined surface of the V groove. The V groove is characterized in that a rising portion is provided at the top of both ends of the inner inclined surface of the V groove.

The rising portion may be formed so as to present a substantially vertical surface on the inner side, or may have an inner surface that is inclined at an acute angle with respect to the inclination angle of the inner inclined surface of the V groove.

The rising portion is preferably formed so as to have a height reaching the vertical side surface of the wheel of the door roller when the wheel is fitted in the V groove.

[0011]

[Action]

 Since the rising portions are formed at the tops of both ends of the inclined surface of the V-shaped groove into which the wheels of the door roller are fitted, lateral movement of the wheels is restricted, and wheel removal can be effectively prevented.

[0012]

【Example】

 FIG. 1 shows an example of the construction of a door rail according to the present invention, in which a V groove having inclined surfaces 2 and 2 is formed on the upper surface of a rail body 1 which is embedded and fixed in a predetermined position of a floor base 4. Although it is common to that of FIG. 6 (see FIG. 6), rising portions 3 and 3 are formed at the tops of both ends of the V-groove inclined surface.

The height of the rising portion 3, that is, the vertical dimension of the inner surface thereof is set so as to reach the vertical side surface portion 6 of the wheel 5 when the wheel 5 is fitted in the V groove (see FIG. 2). . Preferably, the height dimension is set so that when the wheel 5 moves laterally and comes into contact with the rising portion 3, the vertical side surface portion 6 comes into contact with the inner surface of the rising portion 3 (Fig. 3).

Although the rising portion 3 in the configuration example shown in FIG. 1 is shown as having a vertical inner surface, as shown in FIG. 4, the inclined inner surface 3 ′ that rises at an acute angle with respect to the V groove inclined surfaces 2 and 2, It may have 3 '. When the rising portion 3 has an inclined inner surface, the effect of restricting the lateral movement of the wheel 5 is slightly smaller than that when the rising portion 3 has a vertical inner surface, but dust such as dust that has entered the V-groove cannot be ejected. It has the advantage that it can be done easily.

Further, the upper surface of the rising portion 3 is generally formed flat so that the rail main body 1 is embedded and fixed in the floor base body 4 so as to be flush with the upper surface of the floor base body. In some cases, the vertical or slanted inner surface may be formed as the slanted surfaces 7, 7 which are slanted downward from the top end (see FIG. 6).

[0016]

[Effect of device]

 By using the door rail of the present invention, it is possible to effectively prevent the door wheel from derailing. In this door rail, only a part of the rail main body is processed, and the processing is extremely simple, so that the cost does not increase. Further, since the wheels of the door roller are not subjected to excessive friction, the door can be opened and closed smoothly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a door rail according to an embodiment of the present invention in a used state.

FIG. 2 is an explanatory diagram showing a preferable positional relationship between a rising portion of the door rail of FIG. 1 and a door wheel.

FIG. 3 is an explanatory diagram showing a more preferable example of the positional relationship between the rising portion of the door rail of FIG. 1 and the wheels of the door roller.

FIG. 4 is a partial sectional view showing a modified example of the door roller rail according to the present invention.

FIG. 5 is a partial cross-sectional view showing another modification of the door rail according to the present invention.

FIG. 6 is a cross-sectional view showing an example of a conventional door roller rail in a use state.

[Explanation of symbols]

 1 Door rail 2 V groove slope 3 Rise 4 Floor base 5 Wheel

Claims (5)

[Scope of utility model registration request] 1. A V groove is formed on the upper surface of the rail body,
An outer peripheral portion of a wheel of a door roller is configured to roll while being in contact with an inner inclined surface of the V groove, wherein rising portions are provided at both ends of the inner inclined surface of the V groove. Rail for door car. 2. The door roller rail according to claim 1, wherein an inner surface of the rising portion is formed substantially vertically. 3. The door rail according to claim 1, wherein an inner surface of the rising portion is an inclined surface which rises at an acute angle with respect to an inner inclined surface of the V groove. 4. The inner surface of the rising portion is formed to have a height dimension that reaches a vertical side surface portion of a wheel of a door roller in a state of being fitted in the V groove. The door rail for claim 1. 5. The vertical side surface of the rising portion when the inner surface of the rising portion comes into contact with the inner surface of the rising portion when a wheel of a door roller fitted in the V groove moves laterally. The rail for door rollers according to claim 1, wherein a height dimension of the rising portion is set so as to come into contact with the inner surface of the rising portion.