CN200952310Y

CN200952310Y - Automatic resetting door hinge

Info

Publication number: CN200952310Y
Application number: CN 200620044543
Authority: CN
Inventors: 林子衡; 王雅平; 王明宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-04
Filing date: 2006-08-04
Publication date: 2007-09-26
Anticipated expiration: 2016-08-04

Abstract

The utility model is a door hinge. An automatic reset door hinge, which comprises: a first leaf plate fixed on a door plate; a second leaf plate fixed on a door frame; a rotary shaft; a set of first torsion part arranged on the rotary shaft and rotated around the rotary shaft through connected movement with the first leaf plate; a set of second torsion part arranged on the rotary shaft; a fixing end fixed on the second torsion part, as well as a torsion spring fixed on the torsion end of the first torsion part. The utility model is characterized in that: the door hinge has a first cam fixed on one end of the rotary shaft, the first cam has a first inclined plane; a second cam sheathed on the rotary shaft, the second cam can be connectedly moved with the first leaf plate and rotated around the rotary shaft synchronously with the first torsion part, the second cam has a normality of second inclined plane, and is contacted with the first inclined plane; a screw cap screwed with the other end of the rotary shaft; as well as a compression spring between the screw cap and the second torsion part. The utility model solves the technical problems on slowing the impact force of the automatic reset door hinge, and reducing the noise.

Description

Automatically reset door hinge

Technical field:

The utility model is the hinge that is applicable to door about a kind of, particularly relevant a kind of a kind of automatically reset door hinge that can reduce noise when door is closed.

Background technology:

Along with transition of age, safety and quality for the door of coming in and going out are all very paid attention to, general common mode is to increase the weight of door-plate to improve the intensity of its safety and structure, but the weight increase with door-plate also can face some problems, and it is smooth and easy and laborsaving that for example whether the hinge of door-plate and doorframe can make the switch motion of door-plate.

The known automatically reset hinge design of door that makes as TaiWan, China patent announcement M257397 number, has wherein disclosed a kind of automatically reset door hinge that utilizes torque spring.

By the restoring force that reverses of torque spring, make two pages of sheets of two hinges have closed power under normal conditions, thus be individually fixed in doorframe and door-plate when two page or leaf sheets, will reversing restoring force door can automatically be closed because of torque spring; Otherwise when door is opened, begin the torque spring application of force is made it to produce twist motion along with moving of door-plate, along with the increase of the unlatching amplitude of door-plate, torque spring will produce bigger answer torsion.Therefore, when hand discharges behind the door, can allow door close automatically by the answer torsion of torque spring.

But, because the amplitude that the hinge of this kind structure is opened at door-plate heals when big, the answer torsion of the torque spring that it is inner can be healed greatly, add the revolution inertia strength of door when closing, make door-plate knocking door case and produce great noise with sudden force easily, long-term use causes the damage of door-plate easily and shortens its application life.

The utility model content:

The purpose of this utility model is providing a kind of automatically reset door hinge, solves the technical problem of slowing down automatically reset door hinge impact and minimizing noise.

The technical scheme that the utility model solves the problems of the technologies described above is:

A kind of automatically reset door hinge includes: one is fixed in first page of sheet of door-plate; One is fixed in second page of sheet of doorframe; Rotating shaft; One first torsion member that is sheathed on this rotating shaft and rotates around this rotating shaft with this first page of sheet interlock; One is sheathed on second torsion member of this rotating shaft; One has the fixed end that is fixed in this second torsion member and is fixed in the torsionspring that reverses end of this first torsion member, it is characterized in that:

Have: be fixed in first cam of this rotating shaft one end, this first cam has one first inclined-plane; Be sheathed on second cam of this rotating shaft, this second cam can synchronously be rotated around this rotating shaft with this first torsion member by this first page of sheet interlock, and this second cam has one second inclined-plane normality and this first inclined-plane keeps in touch; One is screwed together in the nut of the other end of this rotating shaft; And a compression spring between this nut and this second torsion member.

It is characterized in that: this first inclined-plane has an angle of inclination of this door-plate closing velocity of decision.

It is characterized in that: this first inclined-plane is one to have the continuous curve surface of different camber lines.

The beneficial effects of the utility model are, wherein first cam and second cam are respectively by doorframe and door-plate interlock, other has a compression spring can provide first inclined-plane that an elastic force forces first cam and second inclined-plane of second cam to keep driving fit, put on first inclined-plane and second inclined-plane contact pressure to each other by the compression spring, make win cam and second cam can produce a frictional resistance in the process of opening the door and closing the door to each other, particularly return back to the final stage of closed condition by the unlatching shape at door-plate, it is maximum that this frictional resistance can reach, and then the impulse force when slowing down door-plate and closing, to reach the purpose of slowing down impact and reducing noise.

Description of drawings:

Fig. 1 and Fig. 2 are three-dimensional exploded view of the present utility model.

Fig. 3 is a plan view of the present utility model

Fig. 4-1 is to Fig. 4-the 7th, the utility model action signal (door is opened, and opens to a certain degree to reach a closing state).

The specific embodiment:

At first, see also Fig. 1, shown in Figure 2, preferred embodiment structure of the present utility model, it includes:

First page of sheet 29 is fixed in door-plate 35 (referring to Fig. 4-1), also is fixed with first outer sleeve 291 and the 3rd outer sleeve 292 respectively at the end positions place, edge near first page of sheet 29;

Second page of sheet 30 is fixed in doorframe 36, also is fixed with one second outer sleeve 301 at the edge of second page of sheet 30, and the composition of relations that this second outer sleeve 301 can be coaxial is between first outer sleeve 291 and the 3rd outer sleeve 292;

First inner sleeve 32, its for example see through assembly such as bolt and be fixed together with first outer sleeve 291, assembly such as the 3rd inner sleeve 34 for example sees through bolt and be fixed together with the 3rd outer sleeve 292, assembly such as second inner sleeve 31 for example sees through bolt and being fixed together with second outer sleeve 301;

First cam 21, have first inclined-plane, 221, the first cams, 21 normalities and be fixed in rotating shaft 23, for example can utilize one to pass the bolt of screw 222 and first cam 21 is fixed in rotating shaft 23, in present embodiment, first inclined-plane 221 is the continuous curve surface of different camber lines;

Second cam 22, has second inclined-plane 223, the relation that the 223 long maintenances of second inclined-plane contact with first inclined-plane 221, second cam 22 can be done relative rotatablely moving with first cam 21, (for example: door-plate 35 is opened to keep corresponding relation with first inner sleeve 32, first cam 21 and first torsion member 24, latch 33 is equipped in fastening part 323 and makes torque spring 25 produce torsion, make second inclined-plane 223 of second cam 22 leave first inclined-plane 221 of first cam 21), in present embodiment, second inclined-plane 223 has the angle of inclination different with first inclined-plane 221;

First torsion member 24, between second cam 22 and torque spring 25, go up jagged 241 fixedly reversing on end 252, the first torsion members 24 of torque spring 25 have several to have several fixing holes 242 can plug latch 33;

Second torsion member 26 is fixed in rotating shaft 23 (for example: utilize bond face 262 can be fixing with the bond face 231 of rotating shaft 23), between torque spring 25 and compression spring 27, goes up the jagged 261 fixing fixed ends 251 of torque spring 25;

One torque spring 25 is placed in rotating shaft 23, have one be fixed in first torsion member 24 breach 241 reverse 251 of the fixed ends that end 252 and is fixed in the breach 261 of second torsion member 26;

One compression spring 27, be placed in rotating shaft 23, and between second torsion member 26 and nut 28, permanent length provides an elastic force in order to the interlock rotating shaft 23 and first cam 21, force second inclined-plane, the 223 long relations that keep in touch of first inclined-plane 221 and second cam 22 of first cam 21, and the friction between first inclined-plane 221 and second inclined-plane 223 is increased, and reach the effect of slowing down the impulse force that door-plate 35 cuts out;

Nut 28, in rotating shaft 23 bottom, having screw 281 can interfix with the screw thread 232 in the rotating shaft 23;

One latch 33 has several that several fixing holes 242 are arranged on first torsion member, 24, the first torsion members 24 of rotating shaft 23, and inner sleeve 32 has a fastening part 323, can Fixed latches 33;

As shown in Figure 3, second torsion member 26, (for example: utilize bond face 262 to fix be fixed in rotating shaft 23 with the bond face 231 in the rotating shaft 23, can blocking firmly compress spring 27), between torque spring 25 and compression spring 27, go up the jagged 261 fixing fixed ends 251 of torque spring 25, the bond face 231 of rotating shaft 23 bottommosts, adjust the screw thread 232 of rotating shaft 23 screws 281 and nut 28, fine-tuning speed that it is closed the door and degree of tightness.Nut 28 can be installed in the mouth of pipe place of the 3rd inner sleeve 34 lower ends, and makes the nut 28 can be along rotating shaft moving about in the of 23.

Opposite side at the rotating shaft 23 and second torsion member 26 is placed in torque spring 25, is placed in rotating shaft 23, have one be fixed in first torsion member 24 breach 241 reverse 251 of the fixed ends that end 252 and is fixed in the breach 261 of second torsion member 26.There is first inclined-plane 221 of second inclined-plane, 223, the first cams 21 of first inclined-plane 221 of first cam 21 and second cam 22 to be fixed in the rotating shaft 23 on first torsion member 24 of rotating shaft 23; Second inclined-plane 223 of second cam 22 can move up and down according to the torsion of torque spring 25 generations.Plug the effect that 29, the second pages of sheets of 33 pairs of first page of sheets of latch 30 produce roof pressure by the several fixing holes 242 that have on first torsion member 24 at last.

Reverse pre-power when the answer of adjusting torque spring 25, make second inclined-plane 223 that compression spring 27 just in time can cushion first inclined-plane 221 of first cam 21 and second cam 22 because of torsion produce frictional force with containing it.Whole rotating shaft 23 can be upper and lower mobile when stressed, but can't left and rightly move, and compression spring 27 produces the effect of compressing when stressed, allows compression spring 27 also because of torsion produces reaction force, but still can merge between two pages of

sheets

29,30.

Shown in Fig. 4-1, Fig. 4-2, under not stressed situation, first cam 21 has first inclined-plane 221, first cam, 21 normalities are fixed in rotating shaft 23 (for example utilize pass the bolt of screw 222 and first cam 21 is fixed in rotating shaft 23), second cam 22 has second inclined-plane 223, second cam, 22 normalities are in rotating shaft 23, and first inclined-plane 221 of first cam 21 and second inclined-plane 223 of second cam 22 present maximum angle.Because of first torsion member 24 between second cam 22 and torque spring 25, go up jagged 241 fixedly torque spring 25 reverse end 252, torque spring 25 fixed ends 251 are fixed in the breach 261 of second torsion member 26.First torsion member 24 has several to have several fixing holes 242 can plug latch 33 in rotating shaft 23, makes torque spring 25 fixedly present a pre-power, and compress spring 27 and present device length this moment.Shown in Fig. 4-3, Fig. 4-4, when door-plate 35 begins to open, torque spring 25 begins to produce torsion, second inclined-plane 223 of second cam 22 is opened, because of making rotating shaft 23, torsion moves down, this moment, second inclined-plane, 223 meetings of second cam 22 were moved toward first inclined-plane 221 of first cam 21 a little, and the 27 stressed meetings of compression spring are a little to lower compression rotating shaft 23.Shown in Fig. 4-5, Fig. 4-6, Fig. 4-7, when door-plate 35 unlatchings 90 are spent, torque spring 25 produces acrotorque, make first torsion member 24 push back first inclined-plane, 221 closures of second inclined-plane 223 and first cam 21 of second cam 22, both combine closely, torsion moves down rotating shaft 23, and compressing spring 27 this moment can be to lower compression rotating shaft 23, make door fixedly rotational angle in an opening position.The anti-torsion of 25 pairs of door-plates of torque spring, 35 generations simultaneously, so when door-plate 35 begins to cut out, compression spring 27 is replied because of torsion, rotate second inclined-plane 223 of torque spring 25, first torsion member 24 and second cam 22, second inclined-plane 223 that makes second cam 22 slowly separates with first inclined-plane 221 of first cam 21, and the Cushioning Design of the frictional force of generation discharges the door of opening, door-plate 35 can be subjected to the pushing tow of the 33 pairs of page or

leaf sheets

29,30 of latch on first torsion member 24 and turn round.First inclined-plane 221 has an angle of inclination to determine the closing velocity of this door-plate 35, perhaps, because first inclined-plane 221 of first cam 21 is different with the angle of inclination on second inclined-plane 223 of second cam 22, make the speed of closing the door that two-part adjustable (this first inclined-plane is the continuous curve surface of different camber lines, forms the multistage closing velocity for this door-plate) be arranged.When door-plate 35 closes a half, be to push back, and continue to rotate and when closing by the weight of door, be that both resist mutually by the angle of inclination on second inclined-plane 223 of first inclined-plane 221 of the resilience of compression spring 27 and first cam 21 and second cam 22.

Comprehensive the above, automatically reset door hinge of the present utility model, the main change that sees through inclined design and spring structure, and then reach the effect of buffering, and effectively slow down the speed that door is closed, be close to when closing up to door, make the closing velocity of door almost stop, so it is minimum that the door impact can be reduced to, and also causes child's safety that doubt is arranged because of Men Buhui closes fully, and can prevent that noise from taking place.In the process of switch door, need not must push up as known supporting member and hold up elastic parts, produce noise and reduce bump.

Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; anyly have the knack of this skill person; in not breaking away from spirit and scope of the present utility model; and a little change and the retouching done; therefore all should be covered by in the utility model, protection domain of the present utility model defines and is as the criterion when looking claims.

Claims

1, a kind of automatically reset door hinge includes: one is fixed in first page of sheet (29) of door-plate (35); One is fixed in second page of sheet (30) of doorframe (36); Rotating shaft (23); One first torsion member (24) that is sheathed on this rotating shaft (23) and rotates around this rotating shaft (23) with this first page of sheet (29) interlock; One is sheathed on second torsion member (26) of this rotating shaft (23); One has fixed end (251) that is fixed in this second torsion member (26) and the torsionspring that reverses end (252) (25) that is fixed in this first torsion member (24), it is characterized in that:

Have: be fixed in first cam (21) of these rotating shaft (23) one ends, this first cam (21) has one first inclined-plane (221); Be sheathed on second cam (22) of this rotating shaft (23), this second cam (22) can synchronously be rotated around this rotating shaft (23) with this first torsion member (24) by this first page of sheet (29) interlock, and this second cam (22) has one second inclined-plane (223) normality and this first inclined-plane (221) keeps in touch; One is screwed together in the nut (28) of the other end of this rotating shaft (23); And a compression spring (27) between this nut (28) and this second torsion member (26).

2, automatically reset door hinge according to claim 1 is characterized in that: this first inclined-plane (221) has an angle of inclination of decision this door-plate (35) closing velocity.

3, automatically reset door hinge according to claim 1 is characterized in that: this first inclined-plane (221) is one to have the continuous curve surface of different camber lines.