JP3008463U - Guide rollers used for folding doors - Google Patents

Abstract

(57) [Summary] [Purpose] For a guide roller that supports the sliding side door of the folding door, simplify the installation work of the roller.
Guarantees the smooth rotation of the rollers. [Structure] The compression spring 3 is housed in the resin cylinder 10.
A cap-shaped roller 40 is attached to the tip of the shaft body 20 that is biased toward the tip by 0. An annular convex portion 41 is provided on the inner surface of the peripheral wall portion of the roller 40. The annular convex portion 41 is fitted into the circumferential groove 22 provided on the outer surface of the distal end portion of the shaft body 20 to prevent the roller 40 from coming off. Hemispherical protrusion 4 on the back surface of the top of the roller 40
2 is provided, and its back surface is brought into point contact with the tip surface of the shaft body 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting used for a folding door, and more particularly to a guide roller vertically attached to the upper and lower surfaces of the sliding side door of the folding door to rotatably support the door.

[0002]

[Prior art]

 As shown in FIG. 1, the folding door is hinged to the rotary side door 1T that performs only the rotary motion and the door 1T, and the sliding side door that performs the rotary motion and the slide motion as the rotary side door 1T opens and closes. It consists of a door 1S.

The rotating door 1T is composed of an upper pivot 2U mounted vertically on its upper surface and a lower pivot 2D mounted vertically on its lower surface, so that its outer portion is rotatable between the upper and lower rails 3U, 3D. Supported. The tip ends of the pivots 2U and 2D engage with the metal fittings 4U and 4D set on the rails 3U and 3D, respectively. On the other hand, the sliding side door 1S is rotatably and slidably supported between the rails 3U and 3D by the outer portions by the guide rollers 5U and 5D mounted vertically on the upper and lower surfaces thereof. The guide rollers 5U and 5D are the same, and each tip portion directly engages with the rails 3U and 3D.

Here, the guide rollers 5U and 5D include a resin cylinder 6 having an open front end and a closed base end, and a part on the front end side inserted movably in the resin cylinder 6 in the axial direction. The shaft body 7 protruding toward the tip side of the resin tube body 6, the compression spring housed in the resin tube body 6 for urging the shaft body 7 toward the tip side, and the tip end portion of the shaft body 7 being rotatable. Mounted roller 8. Here, the resin cylinder 6 is divided into two half cylinders in a plane passing through the center thereof, and both of the half cylinders are integrally connected at the base end portion and are externally fitted to the tip end portion. Are joined by a ring. Further, the roller 8 is prevented from coming off by squeezing the tip of the shaft body 7 by caulking.

[0005]

In such a conventional guide roller, in order to prevent the roller 8 from coming off, the tip of the shaft body 7 is crushed by caulking. Therefore, it takes time to assemble. If the caulking is uneven and the caulking is too strong, the roller 8 becomes difficult to rotate, and if it is too weak, the roller 8 may come off. In other words, due to the insufficient caulking, the mobility and the mounting strength of the roller 8 are reduced.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a guide roller which is easy to assemble and which does not cause the roller to be accidentally disengaged or deteriorate in movement. To aim.

[0007]

[Means for Solving the Problems]

 The guide roller according to the present invention is a guide roller that is vertically attached to the lower surface of a sliding door of a folding door to rotatably and slidably support the door, and is vertically embedded in the lower surface of the door. , A resin cylinder with an open front end and a closed base end, and a shaft body that is axially movably inserted into the resin cylinder and partially protrudes toward the front end side of the resin cylinder. It comprises a compression spring housed in a resin cylinder to urge it toward the tip side, and a roller rotatably attached to the tip part of the shaft body, and the roller is a cap put on the tip part of the shaft body. The inner surface of the peripheral wall has an annular projection that fits into the peripheral groove formed on the outer surface of the tip of the shaft, and the top surface has a hemispherical projection at the center of the back surface. Is.

In the lower pivot according to claim 2, the resin cylinder is further divided into two half cylinders in a plane passing through the center thereof, and both the half cylinders are integrally formed at the base end. It is connected and connected by a ring fitted to the tip end to form a cylinder.

In the lower pivot according to claim 3, further, the ring is a washer-shaped thin plate ring, and the outer surface of the tip end portion of the resin cylinder is a large diameter portion so that the ring contacts, and Following the large diameter portion, thin ribs extending in the axial direction are formed at a plurality of positions on the outer peripheral surface of the resin cylindrical body.

[0010]

[Action]

 In the guide roller according to the present invention, the tip of the shaft is covered with a cap-shaped roller, and when the roller is pushed in, the annular convex portion formed on the inner surface of the peripheral wall of the roller is formed on the outer surface of the tip of the shaft. It fits in the circumferential groove and prevents the roller from coming off. At the time of use, the shaft is biased toward the tip side by the compression spring built in the resin cylinder, and the reaction causes the top back surface of the roller to be pressed against the tip end surface of the shaft body. The hemispherical projection makes point contact with the tip surface of the shaft, ensuring smooth rotation of the roller.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 2 is a longitudinal sectional view showing an example of a guide roller according to the present invention, FIG. 3 is a three-sided view showing a state in which a resin cylinder is open, and FIG. 4 is a three-sided view and a sectional view of the roller.

This guide roller is vertically mounted on the upper and lower surfaces of the sliding side door of the folding door, is vertically embedded in the upper and lower surfaces of the folding door, and has a tip end opened and a base end closed. -Shaped resin cylindrical body 10, a shaft body 20 movably inserted in the resin cylindrical body 10 in the axial direction, and a part of the front end side thereof protruding toward the distal end side of the resin cylindrical body 10; A compression spring 30 housed in the resin cylindrical body 10 to urge it to the side and a cap-shaped roller 40 rotatably attached to the tip of the shaft body 20 are provided.

As shown in FIG. 3, the resin cylinder 10 is divided into two half cylinders 10a and 10b by a plane passing through the center. The semi-cylindrical bodies 10a and 10b are connected by a thin and narrow connecting portion 11 integrally provided at the upper end portion, and are integrally formed in an opened state. Then, they are overlapped at the time of assembly and are joined by a ring 50 that is externally fitted to the tip end to form the resin cylinder 10.

The outer surface of the distal end portion of the resin cylindrical body 10 is a flange-shaped large-diameter portion 12 that also serves as a positioning stopper for the ring 50. A plurality of thin ribs 13 extending in the axial direction are integrally projected at equal intervals in the circumferential direction on the outer surface of the resin cylindrical body 10 excluding the large diameter portion 12 and the base end portion. Each rib 13 is continuous with the large diameter portion 12.

The shaft body 20 inserted into the resin tubular body 10 has a large diameter portion 21 provided on the outer surface of the base end portion and a small diameter portion 14 provided on the inner surface of the distal end portion of the resin tubular body 10. It is locked out. The tip of the shaft body 20 has a slightly smaller diameter, and a circumferential groove 22 is provided in the smaller diameter portion.

The cap-shaped roller 40 attached to the tip of the shaft body 20 is made of resin, and has a shape like a collared cap as shown in detail in FIG. An annular convex portion 41 having a substantially semicircular cross section is integrally provided on the inner surface of the peripheral wall portion of the roller 40. The annular convex portion 41 fits into the circumferential groove 22 formed at the tip of the shaft body 20 to prevent the roller 40 from coming off. A hemispherical projection 42 is integrally provided at the center of the top surface of the roller 40. Due to the protrusion 42, the top back surface of the roller 40 makes point contact with the tip end surface of the shaft body 20.

The ring 50 is a washer-shaped thin plate ring, and is pushed into the outside of the resin cylinder 10 formed by stacking the half cylinders 10 a and 10 b from the base end side until it abuts the large diameter portion 12. It is fitted onto the tip of the resin cylinder 10. As a result, the shape of the resin cylinder 10 is maintained.

Next, the order of assembling the guide roller will be described. The shaft body 20 and the compression spring 30 are sandwiched when the half cylinder bodies 10a and 10b are put together. After the half cylinders 10a and 10b are put together, the ring 50 is pushed into the outside of the formed resin cylinder 10. The roller 40 is attached to the tip of the shaft 20.

Since the assembling work is performed by pushing in the half cylinders 10a and 10b and the ring 50, the work is very simple. Moreover, since the large-diameter portion 12 of the resin cylinder 10 serves as a positioning stopper when the ring 50 is pushed in, the work is further simplified. The ring 50 pushed into a fixed position bites into the plurality of ribs 13 formed on the outer surface of the resin cylindrical body 10 and does not inadvertently be displaced or come off.

To mount the roller 40, the roller 40 is put on the tip of the shaft body 20 and the roller 40 is pushed in. The annular convex portion 41 provided on the inner surface of the peripheral wall portion of the roller 40 is fitted into the peripheral groove 22 provided on the outer surface of the tip end portion of the shaft body 20 to prevent the roller 40 from coming off. This operation is much simpler than the work of crimping the tip of the shaft body 20 to prevent the roller 40 from coming off. Further, since the roller 40 is held by a constant force determined by the size of the roller 40, the motility and mounting strength of the roller 40 do not change due to variations in assembly work.

At the time of use, the shaft body 20 is pushed toward the base end side via the roller 40, and the shaft body 20 is pushed into the resin cylindrical body 10 against the biasing force of the compression spring 30. As a reaction, the top back surface of the roller 40 is pressed against the tip surface of the shaft body 20, but the hemispherical projection 42 formed on the top back surface causes the top back surface to make point contact with the tip surface of the shaft body 20. Therefore, the smooth rotation of the roller 40 is guaranteed.

[0022]

[Effect of device]

 As described above, the guide roller according to the present invention is easily assembled because the cap-shaped roller is pushed into the tip end portion of the shaft body by one-touch operation. The annular projection formed on the inner surface of the roller peripheral wall fits into the circumferential groove formed on the outer surface of the tip of the shaft, so the roller does not come off accidentally even though the assembly is simple. . The hemispherical protrusion provided at the center of the back surface of the top makes point contact with the tip surface of the shaft body, so that smooth rotation of the roller is guaranteed even though the roller is cap-shaped.

In the guide roller according to the second aspect, the resin cylinder is divided into two half cylinders, and both the half cylinders are connected by the ring fitted to the front end of the resin cylinder. It's easy.

In the guide roller according to the third aspect, the ring is a washer-like thin plate ring, and the outer surface of the tip end portion of the resin cylindrical body is a large diameter portion so that the ring abuts. With this, the ring is positioned at a fixed position on the tip, and the pushing operation of the ring is also simple. Furthermore, since a thin rib extending in the axial direction is formed at multiple positions on the outer peripheral surface of the resin cylinder following the large diameter part, a washer-shaped thin plate ring bites into each rib, and the ring is inadvertently moved from a fixed position. There is no danger of it coming off.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a folding door.

FIG. 2 is a vertical sectional view showing an example of a guide roller according to the present invention.

FIG. 3 is a three-sided view showing a state in which a resin cylinder is opened.

FIG. 4 is a three-view drawing and a cross-sectional view of a roller.

[Explanation of symbols]

 10 Resin Cylindrical Body 20 Shaft Body 22 Circumferential Groove 30 Compression Spring 40 Roller 41 Annular Convex Part 42 Protrusion 50 Ring

Claims (3)

[Scope of utility model registration request] 1. A guide roller vertically attached to a lower surface of a sliding door of a folding door to rotatably and slidably support the door, the guide roller being vertically embedded in the lower surface of the door and having a front end portion. A resin cylinder body that is open and closed at the base end, a shaft body that is axially movably inserted into the resin cylinder body, and a part of which protrudes toward the tip end side of the resin cylinder body A compression spring housed in the resin cylinder for biasing; and a roller rotatably attached to the tip of the shaft body, wherein the roller is formed in a cap shape to cover the tip part of the shaft body, The inner surface of the peripheral wall portion has an annular convex portion that fits into the peripheral groove formed on the outer surface of the tip end portion of the shaft body, and the hemispherical protrusion is formed at the center position of the top rear surface. Guide roller used for doors. 2. The resin cylinder is divided into two half cylinders on a plane passing through the center thereof, both of the half cylinders are integrally connected at a base end portion, and externally fitted to the tip end portion. The guide roller according to claim 1, wherein the guide roller is connected by a formed ring to form a cylindrical body. 3. The washer-shaped thin plate ring is used as the ring, and the outer surface of the distal end portion of the resin cylinder is formed as a large diameter portion so that the ring contacts, and the resin cylinder is continued to the large diameter portion. The guide roller according to claim 2, wherein thin ribs extending in the axial direction are formed at a plurality of positions on the outer peripheral surface of the body.