CN201087644Y - Hinge damper of furniture door - Google Patents

Abstract

The utility model particularly relates to a furniture door hinge damper. The damper comprises a shell, a main axis, a guiding bush and a piston, the diameter of the inner wall of a section at the opening part being close to the shell is slightly larger than that of the inner wall at the other side, a sleeve gasket, a sealing ring and a guiding bush are orderly suited in the inner wall from inside to out, and the inner diameter of the sleeve gasket is slightly larger than the diameter of the main axis. After the technical proposal is adopted, more hydraulic oil can be preassembled when assembling, and then the unnecessary hydraulic oil can be discharged through an iron needle, thus the interior hydraulic oil is ensured not be mixed with air anymore, and the shaking is prevented from happening when the main axis moves; the sealing ring between the guiding bush and the main axis can play the actions of correcting, lubricating and sealing, and the correcting action can effectively prevent the main axis from tilting, so as to directly form hardening friction with the guiding bush; under the condition that the piston is matched with the sealing ring, the flow rate of the hydraulic oil bypassing the piston is low, the damper produces the cushioning action when the door is closed, and the flow rate can be fast increased when the door is opened, so as to realize the fast opening of the door.

Description

The furniture door hinge damper

Technical field:

The utility model relates to furniture door hinge technical field, refers in particular to a kind of furniture door hinge damper.

Background technology:

The hinge that uses in the present furniture, reliably use the bigger spring of elasticity rate in order to make a closure, inevitably produce sharp impacts at closing time, for fear of this situation, on hinge, installed damper additional, make and produce cushioning effect at closing time, existing fairlead all is directly to be enclosed within on the main shaft, because the existence of machining tolerance, be easy to generate inclination during motion of main shaft and between the fairlead, make between main shaft and the fairlead and can produce rigid friction, and the existence of this tolerance influence the sealing between main shaft and the fairlead, usually leave air in the hydraulic oil of the damper of existing structure assembling back in addition, produce vibration when door is closed.

Summary of the invention:

The purpose of this utility model is in order to solve the shortcoming of above-mentioned prior art, to provide a kind of and move steadily, seal furniture door hinge damper reliable, long perfomance life.

For achieving the above object, the technical scheme that the utility model provides is: the furniture door hinge damper, include shell, main shaft, fairlead and piston, one section inner diameter of the opening part of close shell is slightly larger than the diameter of opposite side inwall, be set with spacer, sealing ring and fairlead in this section inwall from inside to outside successively, the internal diameter of spacer is slightly larger than the diameter of main shaft.

Between the endoporus of fairlead and main shaft, also be placed with sealing ring.

Form piston groove on piston, be placed with sealing ring in the groove, piston is processed with the through hole that is communicated with piston groove towards a side of fairlead.

Beneficial effect after the employing technique scheme is as follows:

1. can pre-install some more hydraulic oil when assembling, by the iron pin unnecessary hydraulic oil be discharged again, guarantee that inner hydraulic oil is not mixed with air, generation vibration when preventing motion of main shaft.

2. the sealing ring between fairlead and the main shaft can play the effect of correcting, lubricated and sealing, its correcting effect can prevent effectively that main shaft from producing and directly and fairlead form rigid friction.

3. under the cooperation of piston and sealing ring, at closing time, the hydraulic fluid flow rate of the piston of flowing through is few, and damper produces cushioning effect, and when opening the door, flow can increase sharply, and realizes that the speed of opening of door is opened.

Description of drawings:

Structural representation when Fig. 1 is a main shaft pressurized of the present utility model;

Structural representation when Fig. 2 is a main shaft tension of the present utility model;

Fig. 3 is a cut-away view of outer cover of the present utility model;

Fig. 4 is a piston front elevation drawing of the present utility model;

Fig. 5 is a piston sectional view of the present utility model.

The specific embodiment:

Now 1～Fig. 5 elaborates the utility model in conjunction with the accompanying drawings:

One section inwall 13 diameter of shell 1 opening part 12 of this damper are processed into the diameter that is slightly larger than the opposite side inwall, on this section inwall, be set with spacer 2 from inside to outside successively, sealing ring 7 and fairlead 8, be slightly larger than the diameter of main shaft 5 at the internal diameter of spacer 2, during assembling hydraulic oil is poured in the cavity of shell 1, the hydraulic oil pasta is a little more than the boundary line 14 of shell 1 inwall big footpath section and path section, be inserted in spacer 2 and sealing ring 7 simultaneously, unnecessary lubrication oil will be through the stream 15 of the gap between spacer 2 and the main shaft 5 to the contact surface of spacer 2 and sealing ring 7, simultaneously the iron pin through the cushion of the marginal portion of sealing ring 7 to the contact surface of spacer 2 and sealing ring 7, utilize the iron pin that unnecessary hydraulic oil is extracted out, put fairlead 8 again, so just can prevent that air has been mixed in the hydraulic oil.

Be provided with elastic seal ring 11 in the inboard of fairlead 8, the stability that the existence of elastic seal ring 11 can increase main shaft 5 motion also plays certain lubrication, avoid the generation trembleed, and sealing performance is reliable.

Form piston groove 9 on piston 3, place sealing ring 6 in the hole, the width of sealing circle 6 is more smaller than piston groove 9 width, and piston 3 is processed with three through holes 10 that evenly distribute, are communicated with piston groove 9 towards a side of fairlead 8.

When opening the door, main shaft 5 pressurizeds (as shown in Figure 1), sealing ring 6 rely on the side of piston groove 9 towards fairlead 8, and at this moment, three through holes 10 and aperture 4 participate in flowing of hydraulic oil simultaneously, and flow is big, and this just can not intervene the action of opening the door.

At closing time, main shaft 5 tensions (as shown in Figure 2), sealing ring 6 slowly relies on the opposite side of piston groove 9, at this moment, has only by aperture 4 to participate in flowing of hydraulic oil, and the action of closing the door is just slowly finished, and reaches the effect of buffering.

Claims (3)

1. furniture door hinge damper, include shell (1), main shaft (5), fairlead (8) and piston (3), it is characterized in that: one section inwall (13) slightly larger in diameter of the opening part (12) of close shell (1) is in the diameter of opposite side inwall, be set with spacer (2), sealing ring (7) and fairlead (8) in this section inwall from inside to outside successively, the internal diameter of spacer (2) is slightly larger than the diameter of main shaft (5).

2. furniture door hinge damper according to claim 1 is characterized in that: also be placed with sealing ring (11) between the endoporus of fairlead (8) and main shaft (5).

3. furniture door hinge damper according to claim 1 is characterized in that: form piston groove (9) on piston (3), be placed with sealing ring (6) in the groove, piston (3) is processed with the through hole (10) that is communicated with piston groove (9) towards a side of fairlead (8).

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