KR200245742Y1 - Cap of floor hinge assembly - Google Patents

Abstract

The present invention relates to a cap of a floor hinge assembly that is helically coupled to a floor hinge assembly and supports a hinge shaft penetrating therethrough. A third annulus having an upper side open at the upper portion of the hinge shaft fitting hole 2 to close the gap to prevent foreign foreign matter from entering the floor hinge assembly and to prevent loss of working fluid or lubricant from the floor hinge assembly to the outside. A third ring-shaped recess is formed by forming a recess 7 and having a sealing ring 8 having an upper annular projection 12 and an annular recess 11 and a lower annular projection 13 on the inner circumferential surface thereof in contact with the hinge shaft 1. It is a cap of the floor hinge assembly characterized by the interference fit in (7).

The cap according to the present invention extends the service life of the floor hinge assembly and reduces maintenance and repair costs.

Description

Cap of floor hinge assembly

The present invention relates to a cap of a floor hinge assembly, and more particularly, a hinge assembly so that the hinge shaft can be smoothly rotated in a hinge assembly having a hinge shaft coupled to a lower side of a door installed in a box-type case embedded in a floor of a building. It relates to a cap of the floor hinge assembly which is spirally coupled to one side of the.

The conventional cap has a concentric annular first annular recess 52 and a second annular recess centering on a hinge shaft fitting hole 51 having a size through which the hinge shaft 50 can penetrate as shown in FIG. The mouth 53 was formed, the first annular recess 52 was fitted with a "0" ring 54, and the second annular recess 53 was fitted with a bearing 55. Such a cap is provided with a gap 56 between the hinge shaft fitting hole 51 and the hinge shaft 50, so that a thinner solvent such as thinner used for coating dilution can be used when painting the completed floor hinge assembly. 56) It causes the deformation of the "0" ring (54), which is made through ordinary rubber and flows out of the cap so that the oil contained in the hinge assembly leaked out of the cap, and sand, water, and dust during use of the floor hinge. Since foreign matter is introduced through the gap 56, corrosion of the cap itself and breakage of the "0" ring 54 are caused, such that the failure frequently occurs and the durability thereof is shortened.

As a result of thorough examination of all the problems of the prior art, the inventors have come to complete the present invention by knowing that the problems of the prior art can be solved if the gap between the hinge shaft and the hinge shaft fitting hole can be sealed. .

Therefore, an object of the present invention is to contact the hinge shaft at the upper portion of the hinge shaft fitting hole to prevent the hinge shaft rotational movement from interfering with the outside of the cap of the floor hinge assembly that can block the gap from the outside. To provide.

The present invention is to maintain the state in close contact with the hinge shaft in the upper portion of the hinge shaft fitting hole to seal the gap between the hinge shaft and the hinge shaft fitting hole and to prevent the rotational movement of the hinge shaft.

1 is a front view of the floor hinge assembly coupled to the cap according to the present invention.

2 is a plan view of the cap shown in FIG.

3 is an enlarged cross-sectional view taken along the line A-A of FIG.

4 is an enlarged perspective view of the sealing ring shown in FIG.

Figure 5 is a longitudinal cross-sectional view showing a cap of the prior art.

Explanation of Signs of Major Parts of Drawings

1 .... hinge shaft, 2 .... hinge shaft insertion hole, 7 .... third annular recess

8 ..... sealing ring, 11 ..... annular groove, 12 .... upper annular projection,

13 ..... Lower annular protrusion

1 to 4, the first annular concave portion of the hinge shaft fitting hole 2 and the concentric circle is formed below the hinge shaft fitting hole 2 through which the hinge shaft 1 rotatably penetrates as illustrated in FIGS. 3) and a second annular indentation (4) are formed, the first annular indentation (3) is fitted with a "0" ring (5), and the second annular indentation (4) is equipped with a bearing (6) In the cap of the floor hinge assembly, a third annular recess 7 is formed on the upper side of the hinge shaft fitting hole 2, the upper end of which is opened concentrically with the hinge shaft fitting hole 2; The sealing ring 8 is forcibly fitted into the recess 7.

As shown in FIGS. 3 and 4, the sealing ring 8 has an inner circumferential surface in close contact with the hinge axis in a state in which the outer circumferential surface 9 and the bottom surface 10 are in close contact with the third annular recess 7. An annular recess 11 is formed in the center of the upper recess 11, and an upper annular projection 12 and a lower annular projection 13 are formed above and below the annular recess 11.

In the present invention, it is preferable that the upper annular projections 12 and the lower annular projections 13 form a longitudinal cross section, which is because the hinge shafts are in line contact with the main surface 14 of the hinge shaft 1. By reducing friction with (1) to ensure a smooth rotational movement of the hinge shaft (1), while preventing the wear of the sealing ring (8) itself, while keeping in close contact with the hinge shaft (1) for a long time This is because the gap 15 due to the assembly allowance tolerance between the hinge shaft 1 and the hinge shaft fitting hole 2 can be effectively sealed.

The present invention configured as described above has a clearance 15 between the hinge shaft 1 and the hinge shaft fitting hole 2 by a sealing ring 8 fitted to the third annular recess 7 as well represented in FIGS. 2 and 3. ) Is covered so as not to be exposed, and the upper annular projections 12 and the lower annular projections 13 on the inner circumferential surface side of the sealing ring 8 are elastic by the annular recesses 11 so that the main surface of the hinge shaft 1 14) is kept in line contact for a long time.

Therefore, the upper part of the clearance gap 15 between the hinge shaft 1 and the hinge shaft fitting hole 2 is blocked by the exterior and double.

The invention devises a tight seal between the gap 15 due to assembly tolerance between the hinge axis 1 and the hinge shaft fitting hole 2 without interfering with the smooth rotation of the hinge shaft 1, and thus the gap 15. This prevents foreign matter from entering the interior of the floor hinge assembly and prevents loss of working fluid or lubricant from the interior of the floor hinge assembly to the outside, thereby extending the durability of the floor hinge assembly and reducing maintenance and repair costs. There are such advantages.

Claims (1)

The hinge shaft 1 with a bearing 6 fitted in a ring and a "0" ring 5 fitted in the first annular recess 3 having a lower side of the open hinge shaft fitting hole 2. ), The upper annular projection (12) is formed on the inner circumferential surface of the hinge shaft fitting hole (2), the upper end of which is formed a third annular indentation (7) whose upper side is open. And a sealing ring (8) having an annular recess (11) and a lower annular projection (13) by fitting the third annular recess (7) to the cap of the floor hinge assembly.