CN201902093U

CN201902093U - Door hinge precise in positioning and long in service life

Info

Publication number: CN201902093U
Application number: CN2010206232090U
Authority: CN
Inventors: 周凯明
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-23
Filing date: 2010-11-23
Publication date: 2011-07-20
Anticipated expiration: 2020-11-23

Abstract

The utility model discloses a door hinge precise in positioning and long in service life, which comprises a support, an upper shaft sleeve, a lower shaft sleeve and a hinge. An upper rotary shaft upwardly extends out of one side of the hinge; a lower rotary shaft downwardly extends out of the side of the hinge; the upper shaft sleeve and the lower shaft sleeve are distributed fixedly on the upper portion and the lower portion of the support respectively; the upper rotary shaft is inserted into the upper shaft sleeve; the lower rotary shaft is inserted into the lower shaft sleeve; shaft sleeve chamfers are formed at the tail ends of both an upper shaft sleeve hole and a lower shaft sleeve hole; rotary shaft chamfers are correspondingly arranged at the tail ends of the upper rotary shaft and the lower rotary shaft; and the shaft sleeve chamfers are matched with the rotary shaft chamfers. After the technical scheme is adopted, chamfer structures are arranged at the tail ends of the rotary shafts and the tail ends of the shaft sleeve, so that assembly and positioning can be facilitated by the aid of matching of the rotary shaft chamfers and the shaft sleeve chamfers, and further surface-to-surface matching can be realized by the aid of matching of rotary shaft chamfer surfaces and shaft sleeve chamfer surfaces. Therefore, abrasion can be reduced greatly, the service lives of the shaft sleeves are prolonged to the maximum extent, the maintenance cost of the door hinge is reduced, and the service life of the door hinge is prolonged.

Description

The door hinge of a kind ofly locate accurately, the life-span is long

Technical field:

The utility model relates to a kind of door hinge accurate, that the life-span is long of locating.

Background technology:

The door hinge structure of conventional art as shown in Figure 1, include support (not indicating among the figure), Upper shaft sleeve 01, Lower shaft sleeve 02 and loose-leaf 03, on a side direction of loose-leaf 03, be extended with rotating shaft 04, be extended with lower rotary shaft 05 downwards, Upper shaft sleeve 01 and Lower shaft sleeve 02 distribution one on the other are fixed on the support, Upper shaft sleeve 01 is injected in last rotating shaft 04, lower rotary shaft 05 injects Lower shaft sleeve 02, loose-leaf 03 just can rotate around support like this, when the door hinge of this structure assembled, rotating shaft was difficult to inject axle sleeve, and the quality of fit of rotating shaft simultaneously and axle sleeve is very low, during rotation, owing to be subjected to the influence of rotating shaft and axle sleeve machining accuracy, contact the contact of meeting appearance point between rotating shaft and the axle sleeve, thereby increase wearing and tearing, increase the maintenance cost of door hinge, reduce application life.

Summary of the invention:

The purpose of this utility model is in order to overcome the shortcoming of above-mentioned prior art, a kind of door hinge accurate, that the life-span is long of locating to be provided.

For achieving the above object, the technical scheme that the utility model provides is: a kind of location is accurate, the door hinge that life-span is long, include support, Upper shaft sleeve, Lower shaft sleeve and loose-leaf, on a side direction of loose-leaf, be extended with rotating shaft, be extended with lower rotary shaft downwards, the distribution one on the other of Upper shaft sleeve and Lower shaft sleeve is fixed on the support, Upper shaft sleeve is injected in last rotating shaft, lower rotary shaft injects Lower shaft sleeve, the end of Upper shaft sleeve axle sleeve hole and Lower shaft sleeve axle sleeve hole all forms the axle sleeve chamfering, the corresponding last rotating shaft and the end of lower rotary shaft are provided with the rotating shaft chamfering, and axle sleeve chamfering and rotating shaft chamfering cooperatively interact.

After adopting technique scheme, by and axle sleeve end terminal chamfering structure is set in rotating shaft, utilize the cooperation of rotating shaft chamfering and axle sleeve chamfering, both can convenient for assemblyly locate, can make again when rotating, utilize rotating shaft fillet surface and axle sleeve fillet surface to cooperate, realization face cooperates with face, just can significantly reduce wearing and tearing, prolongs the life-span of axle sleeve to greatest extent, reduce the maintenance cost of door hinge, increase the service life.

Description of drawings:

Fig. 1 is the three-dimensional exploded view of prior art door hinge;

Fig. 2 is the three-dimensional exploded view of the utility model door hinge;

Fig. 3 is the sectional structure chart of the utility model door hinge.

The specific embodiment:

Now elaborate the utility model in conjunction with the accompanying drawings:

The location of present embodiment is accurate, life-span, long door hinge included support 1, Upper shaft sleeve 2, Lower shaft sleeve 3 and loose-leaf 4, on a side direction of loose-leaf 4, be extended with rotating shaft 5, be extended with lower rotary shaft 6 downwards, Upper shaft sleeve 2 and Lower shaft sleeve 3 distribution one on the other are fixed on the support 1, Upper shaft sleeve 2 is injected in last rotating shaft 5, lower rotary shaft 6 injects Lower shaft sleeve 3, the end of Upper shaft sleeve axle sleeve hole 21 and Lower shaft sleeve axle sleeve hole 31 all forms axle sleeve chamfering 71,72, the corresponding last rotating shaft 5 and the end of lower rotary shaft 6 are provided with rotating shaft chamfering 81,82, axle sleeve chamfering 71,72 with

rotating shaft chamfering

81,82 cooperatively interact.

The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection domain of the present utility model.

Claims

1. locate door hinge accurate, that the life-span is long for one kind, include support, Upper shaft sleeve, Lower shaft sleeve and loose-leaf, on a side direction of loose-leaf, be extended with rotating shaft, be extended with lower rotary shaft downwards, the distribution one on the other of Upper shaft sleeve and Lower shaft sleeve is fixed on the support, Upper shaft sleeve is injected in last rotating shaft, lower rotary shaft injects Lower shaft sleeve, it is characterized in that: the end of Upper shaft sleeve axle sleeve hole and Lower shaft sleeve axle sleeve hole all forms the axle sleeve chamfering, the corresponding last rotating shaft and the end of lower rotary shaft are provided with the rotating shaft chamfering, and axle sleeve chamfering and rotating shaft chamfering cooperatively interact.