Improved structure of spring hinge

Abstract

The improved hinge structure includes one right hinge sheet, one left hinge sheet and one repositioning control assembly. The left hinge sheet has rectangular blade in one side and upper and lower axle tubes in the other side; the right hinge sheet has rectangular blade in one side and long axle tube between the upper and the lower axle tube; and the repositioning control assembly consists of one upper mandrel, one lower mandrel and one spring. There are two T-shaped collars, one between the upper axle tube and the long axle tube and the other between the lower axle tube and the long axle tube, and each collar has casing. The improved hinge structure has low cost, simple installation, flexible operation, less noise and long service life.

Description

【Technical field】 [0001] The present invention is an improved structure of a spring hinge for connecting a door and a door frame. 【Background technique】 [0002] Conventional spring hinge structure, please refer to figure 1 , 2 , 3, it mainly consists of a left hinge piece 2, a right hinge piece 3 and a reset control group 4; wherein: the left hinge piece 2 is made of metal and is fixed on the door frame (not shown in the figure), One side has a rectangular blade 21, the blade 21 is pierced with several joint holes 211, so that the left hinge piece 2 can be locked to the door frame according to the blade 21, and the other side of the left hinge piece 2 is provided with an upper shaft tube 22 at both ends. 1. The lower shaft tube 23 and the upper shaft tube 22 are provided with an arc-shaped half-ring groove 221 at about the middle section of the tube wall. The right hinge piece 3 is made of metal and is fixed on the door leaf (not shown in the figure), with a rectangular ...

AI Technical Summary

Problems solved by technology

[0004] Above-mentioned conventional structure, the first person, because of upper and lower mandrel 41,42, all is made with metal material, and respectively integrally extends and makes a fixed seat 411,421 at its two opposite ends, and fixes seat 411,421 Positioning grooves 4111, 4211 are set in the center, and several adjustment holes 412 must be drilled at the relative positions of the upper mandrel 41 and the half-ring groove 211, so that the initial production of the upper and lower mandrels 41, 42 is quite complicated. , virtually increased a lot of manufacturing costs, and to be improved

Secondly, the semi-circular groove 221 provided at the middle section of the shaft tube 22 on the left hinge piece 2 must be made into an arc shape, so that the adjustment rod can be stretched into the rotation and adjustment of the upper mandrel 41, and the upper shaft can be adjusted. The several adjustment holes 412 provided around the mandrel 41 can be exposed for the insertion and positioning of the latch pin 413. Therefore, it also causes inconvenience in the initial manufacture of the left hinge piece 2; especially, because the half-ring groove 221 is circular arc Design, when the left hinge piece 2 is fixed on the door frame, and its right hinge piece 3 is fixed behind the door leaf, it is intended to insert the adjustment rod 5 into the adjustment hole 412 to rotate the interlocking spring 43 to twist, and then relatively adjust the self-resetting force when the door leaf is opened and closed In the process of size, due to the design of the arc-shaped half-ring groove 221, the pin 413 is easy to fall off from the half-ring groove 221, which needs to be improved.

Furthermore, in order to reduce the noise of the door leaf as far as possible when the door leaf is combined with the door frame by the spring hinge and the opening and closing operation is performed, between the two ends of the elongated shaft tube 32 and the upper and lower shaft tubes 22, 23, ring-shaped hinges are respectively provided. Gasket 33, the annular gasket 33 that is made by composite plastics, reaches the effect of reducing the noise of these positions, yet, because upper and lower shaft tubes 22,23 and elongated shaft tube 32 are all made of metal material, then In addition, the left hinge piece 2 is combined with the heavy door leaf, and the right hinge piece 3 is combined with the door frame. Therefore, in the actual process of opening and closing the door leaf, the spring hinge will bear the downward force formed by the weight of the door leaf. The lower force is mainly borne by the upper and lower shaft tubes 22, 23 and the adjacent places of the elongated shaft tube 32, that is, the annular gasket 33 made of composite plastic material is borne, and its top and bottom surfaces are directly in contact with the metal-made The upper and lower shaft tubes 22, 23 and the elongated shaft tube 32 are in contact and rotate relative to each other, so that the top and bottom surfaces of the ring gasket 33 will be prone to rotational wear soon after use, and eventually lose their original purpose. The effect of reducing noise

[0005] In addition, the whole left and right hinge pieces 2,3 and reset control group 4 that constitute the spring hinge are all made of metal material, so that with regard to its reset control group 4, its upper and lower mandrels 41,42 are in contact with the upper and lower hinges. Between the inner walls of the lower shaft tubes 22 and 23, during the contact rotation process, the two positions will also generate noise due to the rotational contact friction between metal and metal, which also needs to be improved.

[0006] In particular, please refer to figure 1 and Figure 4 As shown, if the above-mentioned structure is applied to the double-opening spring hinge, when it is intended to adjust the spring force of one of the springs 43 of one group of automatic control torsion groups 4, the adjustment hole 412 is relocated to the lower shaft tube. 23, therefore, if it is desired to adjust with an adjustment rod 5 and the latch 413 has not been inserted and positioned, the entire mandrel 41 may fall off from the spring 43, which needs to be improved.

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