CN201924721U

CN201924721U - Novel middle hinge

Info

Publication number: CN201924721U
Application number: CN2010206821593U
Authority: CN
Inventors: 张红伟; 张立境; 张献峰; 闫学彬; 葛运民
Original assignee: Henan Xinfei Electric Group Co Ltd
Current assignee: Henan Xinfei Electric Group Co Ltd
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-08-10
Anticipated expiration: 2020-12-28

Abstract

The utility model discloses a novel middle hinge, comprising a hinge mounting plate with mounting holes, wherein the hinge mounting plate is provided with a hinge arm, a middle hinge shaft is arranged at the end part of the hinge arm, and the back surface on the hinge mounting plate, corresponding to the arrangement position of the hinge arm, is provided with a sunk groove. The dangerous section of the novel medium hinge bears small stress, and the service life of the medium hinge is long.

Description

A kind of novel middle hinge

Technical field

The utility model relates to a kind of novel hinge that is used for refrigerator door.

Background technology

At present, hinge in the refrigerator on the market, the screw hole of installation is on the left side mostly, and the back shaft of door body is on the right.The installing hole on the left side and the distance of back shaft are big more, and the arm of force is long more, and the stress that middle hinge dangerouse cross-section is subjected to is big more, and the middle hinge that supports the door body just needs to strengthen, otherwise hinge destroys in will causing.Traditional middle hinge such as Fig. 1, Fig. 2, shown in Figure 3, comprise the base 1 that has installing hole 2, base 1 is provided with pivoted arm 3, and pivoted arm 3 ends are provided with middle hinge axis 4, and pivoted arm 3 rear portions are outstanding backward, traditional middle hinge is carried out force analysis, make force analysis figure-Fig. 7, draw twisting moment diagram-Fig. 8, bending moment diagram-Fig. 9 according to Fig. 7, among Fig. 7 to Fig. 9, A is a left side installing hole stress point, and stressed herein is R _A, B is a right side installing hole stress point, stressed herein is R _B, C is the hinge axis stress point, and stressed herein is P, and the distance between A, the B is L ₁, the distance between B, the C is L ₂, according to Fig. 8, Fig. 9, the dangerouse cross-section that draws traditional middle hinge is the B cross section, and the B cross section is at right side installing hole place, and the suffered stress in B cross section is moment of torsion m _c, moment of flexure L ₂The stress that P produces.During installation, be installed on screw and install on the casing, the distance of installing hole and hinge axis is big, and the arm of force is long, and the suffered stress of middle hinge dangerouse cross-section is bigger, causes middle hinge destruction easily.

The utility model content

The purpose of this utility model provides the little novel middle hinge of a kind of suffered stress.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of novel in hinge, comprise the hinge installing plate that has installing hole, the hinge installing plate is provided with pivoted arm, the pivoted arm end is provided with middle hinge axis, the back side that corresponding pivoted arm is provided with the position on the hinge installing plate is provided with deep gouge.

Described pivoted arm rear portion has crooked concave surface.

In the utility model, the back side that corresponding pivoted arm is provided with the position on the hinge installing plate is provided with deep gouge, and during installation, the support of installing on the casing with middle hinge cooperates.The utility model is carried out force analysis, make force analysis figure-Figure 10, draw twisting moment diagram-Figure 11, bending moment diagram-Figure 12 according to Figure 10, among Figure 10 to 12, A is a left side installing hole stress point, and stressed herein is R _A, B is a right side installing hole stress point, stressed herein is R _B, C is the hinge axis stress point, and stressed herein is P, and D is a deep gouge place stress point, and stressed herein is R _D, the distance between A, the B is L ₁, the distance between B, the C is L ₂, the distance between B, the D is L ₃, the distance between D, the C is L ₄, drawing dangerouse cross-section of the present utility model according to Figure 11, Figure 12 is the B cross section, and the B cross section is at right-hand member locating hole place, and the suffered stress in B cross section is moment of torsion m _c, moment of flexure (L ₂P-L ₃R _D) stress that produces.Hence one can see that, and the suffered stress of dangerouse cross-section reduces in the utility model.

Description of drawings

Fig. 1 is traditional middle hinge arrangement schematic diagram;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the rear elevation of Fig. 1;

Fig. 4 is the utility model structural representation;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is the rear elevation of Fig. 4;

Fig. 7 is the middle hinge force analysis figure among Fig. 1;

Fig. 8 is the middle hinge twisting moment diagram among Fig. 1;

Fig. 9 is the middle hinge bending moment diagram among Fig. 1;

Figure 10 is the utility model force analysis figure among Fig. 4;

Figure 11 is the utility model twisting moment diagram among Fig. 4;

Figure 12 is the utility model bending moment diagram among Fig. 4.

The specific embodiment

As Fig. 4, Fig. 5, shown in Figure 6, a kind of novel middle hinge, comprise the hinge installing plate 1 that has installing hole 2, hinge installing plate 1 is provided with pivoted arm 3, pivoted arm 3 ends are provided with middle hinge axis 4, the back side that corresponding pivoted arm 3 is provided with the position on hinge installing plate 1 is provided with deep gouge 6, and during installation, deep gouge 6 cooperates with the support that middle hinge is installed on the casing; Described pivoted arm 3 rear portions have crooked concave surface 5, can increase the folding angle of refrigerator door.

Claims

One kind novel in hinge, comprise the hinge installing plate that has installing hole, the hinge installing plate is provided with pivoted arm, the pivoted arm end is provided with middle hinge axis, it is characterized in that, the back side that corresponding pivoted arm is provided with the position on the hinge installing plate is provided with deep gouge.
2. novel middle hinge as claimed in claim 1 is characterized in that described pivoted arm rear portion has crooked concave surface.