TWI818844B - Double spring hinge - Google Patents

Abstract

A double spring hinge includes a pivot unit with two leaves, two pressure accumulation units that pivot through the leaves, and a shaft unit. Each pressure accumulation unit includes a pressure accumulation sliding sleeve with an inclined surface, and a pressure accumulation slide block capable of fitting the inclined surface with a reverse inclined surface. The shaft unit includes a shaft passing through the pressure accumulation units, and two elastic return elements arranged between the shaft and the pressure accumulation units. When one of the leaves drives the pressure-accumulating sliding sleeves to rotate forward, or the other leaf drives the shaft to rotate forward, the inclined surfaces of the pressure-accumulating sliding sleeves and the reverse inclined surfaces of the pressure-accumulating sliding blocks They will push against each other and compress the elastic return elements to generate elastic force that drives the corresponding leaves to rotate in the opposite direction. In this way, through a streamlined structure, there is no direction restriction for installation and the purpose of improving the closing force is achieved.

Description

Double spring hinge

The present invention relates to a hinge, in particular to a double spring hinge.

Taking the hinge device disclosed in Figure 15 of the Republic of China Patent No. I654363 as an example, it mainly uses the design of double torsion springs so that the restoring force generated can have an additive effect, and is suitable for heavier door leaves.

However, the patent No. I654363 can only force the torsion springs to generate restoring force by twisting the torsion springs, and with the design of installation without direction restrictions, the structure of the axis is more complicated. Therefore, how to install it in a limited space? Under this circumstance, forcing these torsion springs to generate greater restoring force and simplifying the overall structure have become technical problems that the applicant of this case is eager to overcome.

Therefore, the object of the present invention is to provide a double-spring hinge with a simplified structure and unlimited installation direction.

Therefore, the double spring hinge of the present invention is suitable for connecting a door leaf and a fixed surface, and includes a pivot unit, two pressure accumulation units, and an axis unit.

The pivot unit includes two leaves suitable for connecting the door leaf and the fixed surface. Each leaf has at least one sleeve. The sleeves of the leaves are arranged along an axis and are defined around the axis. Out a pipe.

The pressure accumulation units are placed in the pipeline along the axis direction. Each pressure accumulation unit includes a first sleeve that rotates together with one of the leaves, and a first sleeve that is rotatably sleeved on the first sleeve. a second sleeve, a pressure accumulator sliding sleeve detachably installed on the first sleeve and rotating together with the first sleeve, and an accumulator installed between the first sleeve and the second sleeve. The pressure slide block has an inclined surface, the pressure accumulation slide block has a reverse inclined surface that can fit the inclined surface, and at least one of the second sleeves of the pressure accumulation units is together with the other of the leaves. Turn.

The shaft unit includes a shaft member movably interposed between the pressure accumulation units along the axis direction, and two elastic return elements set between the shaft member and the pressure accumulation units. The shaft member has two On the contrary, the shaft segments of the pressure accumulating sliding sleeves can pass along the axial direction, and each shaft segment is sleeved on a respective pressure accumulating slide block and rotates together with the respective pressure accumulating sliding block.

Thereby, when one of the leaves drives the first sleeves and the pressure accumulating sliding sleeves to rotate forward, or the other leaf drives the second sleeves and the shaft to rotate forward, the The inclined surfaces of the pressure-accumulating sliding sleeves and the reverse inclined surfaces of the pressure-accumulating sliding blocks push each other and compress the elastic return elements to generate elastic force that drives the corresponding leaves to rotate in the opposite direction.

The effect of the present invention is to achieve the purpose of installing without direction restrictions and improving the force of closing the door through a streamlined and modular structure.

11: Door leaf

12: Fixed surface

2: Pivot unit

20:Pipeline

21:First page

211:First casing

212:Plane

213:Screw hole

214: Pin hole

22:Second page

221:Second casing

222: Chimeric part

23: Spacer ring

24:Wasi

25: Ring buckle

26:Lock bolt

27: Locking latch

3a, 3b: Pressure storage unit

31:First sleeve

311:First gap

312:Limiting surface

313:Screw hole

314: Pin hole

315:Perforation

32:Second sleeve

321:Rotating part

322:Second gap

323: Limiting part

324: Rectangular hole

33: Pressure accumulating sliding sleeve

331: Incline

332:convex part

333:Slot

34: Pressure accumulation slider

341: reverse bevel

342: Rectangular hole

343:Slot

35: Pressure regulating bolt

4:Axis unit

41:Shaft parts

411: Shaft segment

412:Side

42:Action parts

421:convex part

422:High groove

423:lower groove

43: Bolts

44: First indexing piece

441:convex part

442: concave part

45: Second indexing piece

451: concave part

452: Rectangular hole

46: Ring parts

461:convex part

47: Elastic return element

471:End

48: Auxiliary elastic element

X: axis

Other features and effects of the present invention will be clearly shown in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view illustrating an embodiment of the double spring hinge of the present invention; Figure 2 is a perspective view of the embodiment Exploded view; Figure 3 is a perspective exploded view of a first pressure accumulation unit in this embodiment; Figure 4 is a perspective exploded view of a second pressure accumulation unit in this embodiment; Figure 5 is an incomplete A cross-sectional view illustrates that the pressure accumulation units are assembled along an axial direction; Figure 6 is a cross-sectional view of this embodiment; Figure 7 is a cross-sectional view similar to Figure 6, but the two elastic return elements are compressed; Figure 8 is a cross-sectional view similar to Figure 6 7, but the end of each elastic return element extends along the axis direction; Figure 9 is a perspective exploded view similar to Figure 3, but with a different pressure accumulation slider; Figure 10 is a view similar to Figure 9 A three-dimensional exploded view, but one axis is different; Figure 11 is an incomplete cross-sectional view, illustrating the assembly of the pressure accumulator units in Figure 10 along the axis direction; Figure 12 is a schematic diagram illustrating the angular range of the restoring force in this embodiment; Figure 13 is a perspective exploded view similar to Figure 10, but the pressure accumulating slider is different; and Figure 14 is a schematic diagram illustrating the embodiment. The angle of the shaft changes.

Referring to Figures 1 and 2, an embodiment of a double spring hinge of the present invention is suitable for connecting a door leaf 11 and a fixed surface 12. The fixed surface 12 can be a door frame, a wall, or the ground. The double spring hinge includes a pivot unit 2, two pressure accumulation units 3a and 3b, and an axis unit 4.

The pivot unit 2 includes a first leaf 21 and a second leaf 22 that are pivoted to each other and can be operated to withstand an external force and rotate, two spacer rings 23, two washers 24, two ring buckles 25, two Locking bolt 26, and four locking pins 27.

In this embodiment, the first sheet 21 has two first sleeves 211 surrounding an axis X. Each first sleeve 211 has two equiangularly distributed planes 212 formed on the inner surface, a screw hole 213 extending along the direction perpendicular to the axis X, and two extending along the direction perpendicular to the axis X and connected with the screw hole 213 Angularly spaced pin holes 214.

In this embodiment, the second sheet 22 has a second sleeve 221 surrounding the axis X and interposed between the first sleeves 211 . The second sleeve 221 and the first sleeves 211 define a pipeline 20 extending along the axis X direction and having two protrusions. The fitting portions 222 are equally angularly distributed on the inner surface.

The equal spacing rings 23 are sleeved between the first sleeve 211 and the second sleeves 221 .

The washers 24 are closed at both ends of the pipe 20 .

The buckles 25 are embedded in the inner surfaces of the first sleeves 211 .

Each locking bolt 26 is screwed into a respective screw hole 213 .

Each locking pin 27 passes through a respective pin hole 214 .

Referring to FIGS. 3 to 6 , the pressure accumulation units 3 a and 3 b are inserted into the pipe 20 along the axis X direction and are blocked by the rings 25 . The pressure accumulation unit 3a or the pressure accumulation unit 3b includes a first sleeve 31, a second sleeve 32, a pressure accumulation sliding sleeve 33, a pressure accumulation slide block 34, and a pressure regulating bolt 35.

The first sleeve 31 has two spaced apart first notches 311 extending from the end surface along the X direction of the axis, two limiting surfaces 312 formed on the outer surface and equally angularly distributed, and a screw extending from the end surface along the X direction of the axis. hole 313, two pin holes 314 extending from the outer surface in the direction perpendicular to the axis X and spaced apart from each other, and one through hole 315 extending from the outer surface in the direction perpendicular to the axis X and equally angularly spaced from the pin holes 314. . The limiting surfaces 312 of each first sleeve 31 of the pressure accumulating units 3a, 3b are pressed against the flat surfaces 212 of the respective first sleeves 211, so as to be able to contact the first leaf 21 Turn together.

The second sleeve 32 has a rotating part 321 rotatably sleeved on the first sleeve 31, and two rotating parts 321 extend along the axis X direction and define two The two notches 322 are the limiting portions 323 .

The second notch 322 of the second sleeve 32 of the pressure accumulation unit 3b corresponds to the fitting parts 222, and also has a rectangular hole penetrating the rotating part 321 and the limiting part 323 along the axis X direction. 324.

The pressure accumulating sliding sleeve 33 is installed on the first sleeve 31 and has a slope 331 facing the second sleeve 32, two protrusions 332 spaced apart and formed on the circumferential surface, and a protrusion 332 formed on the circumferential surface and along the circumferential surface. A slot 333 extending in the X direction of the axis. The protrusions 332 correspond to the first notches 311 of the first sleeve 31 and rotate together with the first sleeve 31 .

The pressure accumulation slider 34 is installed between the first sleeve 31 and the second sleeve 32, and has a reverse slope 341 facing the first sleeve 31 and capable of fitting the slope 331, and an end surface along the reverse slope 341. The axis X direction extends to a rectangular hole 342 on the other end surface, and a slot 343 is formed on the peripheral surface and extends along the axis X direction.

The pressure regulating bolt 35 is screwed into the screw hole 313 of the first sleeve 31 along the axis X direction and is pressed against the pressure accumulating sliding sleeve 33 . The pressure regulating bolt 35 pushes the pressure accumulating sliding sleeve 33 and the pressure accumulating sliding block 34 through changes in threading depth, and forces the second sleeve 32 to move along the axis X direction.

The shaft unit 4 includes a shaft member 41, an action member 42, two bolt members 43, two first indexing pieces 44, a second indexing piece 45, several ring members 46, two elastic return elements 47, and two auxiliary elements. Elastic element 48.

The shaft 41 is movably inserted through the pressure accumulation units along the axis X direction. 3a and 3b, and has two opposite shaft segments 411 extending along the axis X direction. The cross section of each shaft segment 411 is rectangular and has four side surfaces 412 distributed equally angularly and surrounding the axis X. Each shaft segment 411 can pass through a respective pressure accumulating sliding sleeve 33 and be sleeved in the corresponding rectangular hole 342, 324 to communicate with the respective pressure accumulating sliding block 34 and the second sleeve of the pressure accumulating unit 3a. 32 rotate together.

The action member 42 is installed on the second sleeve 32 of the pressure accumulation unit 3b, and has two spaced-apart protrusions 421 formed on the circumferential surface, and two spaced-apart protrusions 421 formed on an end surface facing the elastic return elements 47. A high groove 422 is formed along the axis X direction with the high grooves 422 and two low grooves 423 are spaced apart from the high grooves 422 . The protrusions 421 match the second notches 322 of the second sleeve 32 of the pressure accumulation unit 3b, and rotate together with the second sleeve 32 of the pressure accumulation unit 3b.

The bolts 43 are connected to the shaft 41 and are located between the shaft sections 411 . The bolts 43 can roll against the action member 42 and can sink into the high grooves 422 or the low grooves 423 .

The first indexing piece 44 is installed on the second sleeve 32 of the pressure accumulation unit 3b, and has two convex portions 441 spaced apart and formed on the circumferential surface, and several wavy concave portions surrounding the axis X. 442. The protrusions 441 correspond to the second notches 322 of the second sleeve 32 of the pressure accumulation unit 3b, and rotate together with the second sleeve 32 of the pressure accumulation unit 3b.

The second indexing piece 45 is sleeved on the shaft 41 and rotates together with the shaft 41 move. The second indexing piece 45 is inserted into the second sleeve 32 of the pressure accumulation unit 3b, and has a recess 451 formed on the circumferential surface, and a recessed portion 451 that is sleeved on the corresponding shaft segment 411 of the shaft member 41. Rectangular hole 452.

The rings 46 are installed on the second sleeve 32 of the pressure accumulation unit 3b and are located between the first indexing piece 44 and the action member 42 . Each ring member 46 has two protrusions 461 spaced apart and formed on the circumferential surface. The protrusions 461 correspond to the second notches 322 of the second sleeve 32 of the pressure accumulation unit 3b, and rotate together with the second sleeve 32 of the pressure accumulation unit 3b.

The elastic return elements 47 are sleeved between the shaft member 41 and the pressure accumulation units 3a and 3b. Each elastic return element 47 has two opposite ends 471 that are pressed between the second sleeves 32 . In this embodiment, the ends 471 surround the axis between the second indexing piece 45 and the pressure accumulation slider 34.

Each auxiliary elastic element 48 is pressed between the shaft member 41 and the pressure regulating bolts 35 .

Referring to Figures 2 and 6, during assembly, it is only necessary to insert the preassembled pressure accumulation unit 3a and the shaft unit 4 into the pipe 20 of the pivot unit 2 from the right side of Figure 2 along the axis X direction, and The preassembled pressure accumulation unit 3b is inserted into the pipe 20 of the pivot unit 2 from the left side of Figure 2, and then each locking bolt 26 is screwed into the screw hole 213 of the first sleeve 211 and By inserting into the through hole 315 of the first sleeve 31, the The pressure accumulation units 3a, 3b and the pivot unit 2 are connected through the locking bolts 26. Then, the locking pins 27 are pressed into the pin holes 214 of the first sleeve 211 and the pin holes 314 of the first sleeves 31, so that the locking pins 27 can further limit the position. The pressure accumulation units 3a, 3b and the pivot unit 2. Finally, the washers 24 are forced into the two ends of the pipe 20 , and the rings 25 are embedded in the inner surfaces of the first sleeves 211 to complete the assembly of this embodiment.

Referring to Figure 1, Figure 6 and Figure 7, when the external force drives the door leaf 11, the second leaf 22 rotates forward relative to the fixed surface 12 with the axis X as the center, and closes the door from 0 degrees to the left or right. When the state is rotated to the door opening state of 85 degrees to 95 degrees, the second leaf 22 will drive the shaft 41 to rotate together through the second sleeve 221 of the pressure accumulation unit 3a. Since the second sleeve of the pressure accumulation unit 3a The rotating part 321 of the tube 221 and the first sleeve 31 are in an idling state. Therefore, when the first leaf 21 and the first sleeves 211 are not rotated, the shaft 41 will rotate. During the process, the pressure accumulating slide blocks 34 are driven to rotate relative to the pressure accumulating sliding sleeves 33 , and the bolts 43 are driven to rotate on the action member 42 .

Thereby, the pressure accumulating slide blocks 34 push the inclined surfaces 331 of the pressure accumulating sliding sleeves 33 with the reverse inclined surfaces 341, thereby pushing the second sleeve 32 of the pressure accumulating unit 3a and the pressure accumulating unit 3b. The pressure accumulating sliding sleeve 33 moves in the direction of the elastic return elements 47 along the axis X direction to reduce the distance and compress the elastic return elements 47 to generate a restoring force. At the same time, the bolts 43 will frictionally contact the action member 42 and roll from the lower grooves 423 toward the higher grooves 422 to slow down the opening speed of the door leaf 11 and drive the shaft. The member 41 moves in the direction of the axis X toward the pressure accumulation unit 3b. When the bolts 43 rotate to sink into the high grooves 422, the door leaf 11 can be temporarily stopped at a preset angular position.

When closing the door leaf 11, you only need to gently pull or push the door leaf 11 with your hands to make the bolts 43 on the shaft member 41 break away from the high grooves 422 and roll toward the low grooves 423. Through the restoring force of the elastic return elements 47, the second sleeve 32 of the pressure accumulation unit 3b and the pressure accumulation sliding sleeve 33 of the pressure accumulation unit 3a can be pushed in the direction of the axis X in the opposite direction along the direction of the axis X. On the contrary, the elastic return elements 47 move in the direction to expand the distance and drive the shaft member 41, the second sleeve 32 of the pressure accumulation unit 3a and the second leaf 22 to rotate in reverse direction. And the bolts 43 will frictionally contact the action member 42 and roll from the high grooves 422 toward the low grooves 423, thereby slowing down the closing speed of the door leaf 11.

When the pressure accumulating slide blocks 34 rotate to the point where the reverse inclined surface 341 fits the inclined surface 331 of the pressure accumulating sliding sleeves 33 , and the bolts 43 rotate to sink into the lower grooves 423 of the action member 42 , the elastic return elements 47 can be completely released, and the door leaf 11 can be stabilized in the closed state of 0 degrees.

It is worth mentioning that the space between the high grooves 422 and the low grooves 423 of the action member 42 is a curved surface. Through the design of different curvatures, the amount of friction resistance can be controlled and the door leaf 11 can be changed. rotation speed. And just by changing the angle of the height groove 422, the door leaf 11 can be temporarily stopped at a preset angular position.

It should be noted that the present invention is not limited to rotating the second leaf 22 to achieve the effects of buffering, opening and closing the door. In other variations of this embodiment, the first leaf 21 can also be driven by an external force to achieve the effect. When the axis X is rotated as the center, the first sleeves 31 are driven to rotate by the first sleeves 211 . And when the first sleeves 31 are idling relative to the second sleeves 32 and the second leaves 22 , the second sleeves 32 and the shaft 41 are fixed, through the first sleeves 31 The sleeve 31 drives the pressure accumulating sliding sleeves 33 to rotate relative to the pressure accumulating sliding blocks 34 , and drives the action member 42 to rotate relative to the bolts 43 . Thereby, the pressure accumulating slide blocks 34 will also push the inclined surfaces 331 of the pressure accumulating sliding sleeves 33 with the reverse inclined surfaces 341, and compress the elastic return elements 47 to generate a restoring force, and the bolts 43 will also The friction contact with the action member 42 and sinking into the high grooves 422 stabilizes the preset angular position, so that the present invention has no directional restrictions during installation.

In addition, by rotating each pressure-regulating bolt 35 with the hand tool, the threading depth of each pressure-regulating bolt 35 and the respective first sleeve 31 can be adjusted, and the second hole of the pressure accumulation unit 3a can be pushed. The sleeve 32 and the pressure accumulation slider 34 of the pressure accumulation unit 3b move relatively along the axis X direction to shrink and expand the distance, and change the compression amount of the elastic return elements 47. For example, each time the corresponding pressure-regulating bolt 35 is screwed in to a depth of approximately 1mm, the restoring force can be increased by approximately 37.5Kg, and if the corresponding pressure-regulating bolt 35 is screwed in to a depth of approximately 4mm, the restoring force can be increased by approximately 150Kg.

According to the above, if the restoring force that each elastic return element 47 can generate is set to 150Kg respectively, then the two elastic forces of the two pressure accumulation units 3a and 3b in this embodiment will be The return element 47 can generate a restoring force of 150Kg+150Kg=300Kg after the external force is released, and is suitable for heavier doors.

Importantly, the ends 471 of the elastic return elements 47 are not limited to surrounding the axis X. In other variations of this embodiment, they may also protrude along the axis The second sleeve 32 of the pressure accumulation unit 3a is inserted into the slot 343 of the pressure accumulation slider 34 and the corresponding recess 442 of the first indexing piece 44, and inserted into the second indexing piece 45. The corresponding recess 451 corresponds to the insertion slot 343 of the pressure accumulation slider 34 of the pressure accumulation unit 3b. In this way, the elastic return elements 47 can be further compressed and twisted at the same time, so as to combine the pressure of vertical compression and the lateral thrust torque, thereby shortening the overall length while meeting the demand for restoring force.

It should be noted that the pressure accumulation slider 34 of the pressure accumulation unit 3a is not limited to having the slot 343 as shown in Figure 3. In other variations of this embodiment, the insertion slot 343 can also be omitted as shown in Figure 9. Design of slot 343. This simplifies processing.

In addition, in addition to having a multiplicative effect on the restoring force, this embodiment can also set the elastic return elements through angle changes between the ends 471 and the corresponding slots 343, 333 or the corresponding recesses 442, 451. 47Angle range that can produce restoring force. As shown in Figure 9, the angle of the insertion slot 343 of the pressure accumulation slider 34 of the pressure accumulation unit 3a is different from the angle of the insertion slot 343 of the pressure accumulation slider 34 of the pressure accumulation unit 3a in Figure 3. Alternatively, the angles of the side surfaces 412 of the shaft member 41 can also be changed. As shown in FIG. 10 , the four side surfaces 412 of the shaft section 411 of the shaft member 41 inserted into the pressure accumulation unit 3a are respectively located at 0 degrees, 90 degrees, 180 degrees and 270 degrees. The four side surfaces 412 of the shaft section 411 of the pressure accumulation unit 3b are respectively located at 45 degrees, 135 degrees, 225 degrees and 315 degrees. Thereby, the pressure accumulation slider 34 and the second indexing piece 45 of the pressure accumulation unit 3b will cooperate with the corresponding shaft segment 411 to rotate about 45 degrees, so that the angle range in which the corresponding elastic return element 47 can generate a restoring force becomes 45 degrees. degree ~ 135 degrees. Refer to Figures 11 and 12. In the same process of pushing the door leaf 11 to open from 0 degrees to 90 degrees, the second sleeve 32 and the first indexing piece 44 inserted in the pressure accumulation unit 3a The elastic recovery element between the second indexing piece 45 of the pressure accumulation unit 3b and the pressure accumulation slider 34 generates a recovery force at an angle range of 0 degrees to 90 degrees. The angle range of the force can be between -45 degrees and 45 degrees as shown by the dotted arrows, or between 45 degrees and 135 degrees as shown by the solid arrows.

It should be noted that after changing the angle of the shaft member 41, as shown in FIG. 13, the angle of the slot 343 of the pressure accumulation slider 34 of the pressure accumulation unit 3a can also be changed.

And the angle changes of the side surfaces 412 of the axis section 411 can be as shown in Figure 14, all located at 0 degrees, 90 degrees, 180 degrees, 270 degrees; or respectively located at 0 degrees, 90 degrees, 180 degrees, 270 degrees and 45 degrees, 135 degrees, 225 degrees, 315 degrees; or respectively located at 45 degrees, 135 degrees, 225 degrees, 315 degrees and 0 degrees, 90 degrees, 180 degrees, 270 degrees; or both located at 45 degrees, 135 degrees, 225 degrees , 315 degrees. Other angle ranges can also be changed according to practical requirements, but are not limited to this. Since those with ordinary knowledge in the art can deduce the extended details based on the above description, no further description will be given.

Thus, by changing the angular range of the restoring force, different angles can be obtained. Same opening and closing effects. For example: Less hold on opening: As shown in Figure 1 and Figure 8, the angles of the side surfaces 412 of each shaft segment 411 are located at 0 degrees, 90 degrees, 180 degrees, and 270 degrees. Since the elastic return elements 47 generate forces at the same angle, there is no obvious feeling of pause when the door 11 opens or closes automatically.

Back check power: As shown in Figure 1, Figure 11 and Figure 12, the elastic recovery element inserted between the second sleeve 32 of the pressure accumulation unit 3a and the first indexing piece 44 has an angular range of restoring force between 0 degree to 90 degrees. The elastic recovery element interposed between the second indexing piece 45 of the pressure accumulation unit 3b and the pressure accumulation slider 34 generates a restoring force in an angle range of 45 degrees to 135 degrees. In this way, when the user opens the door in the early stage, only the elastic restoring element interposed between the second sleeve 32 of the pressure accumulation unit 3a and the first indexing piece 44 generates a restoring force, and the user receives less resistance. However, when the When the door leaf 11 opens to 45 degrees to 90 degrees, the elastic recovery elements will generate a restoring force, and the user must apply greater external force to continue pushing the door leaf 11, thereby increasing the resistance when opening the door.

Latch power: As shown in Figure 1, Figure 11 and Figure 12, the elastic recovery element inserted between the second sleeve 32 of the pressure accumulation unit 3a and the first indexing piece 44 has an angular range of restoring force between 0 degrees. ~90 degrees. The elastic recovery element interposed between the second indexing piece 45 of the pressure accumulation unit 3b and the pressure accumulation slider 34 generates a restoring force in an angle range of -45 degrees to 45 degrees. In this way, when the user opens the door initially or automatically closes the door at 45 degrees to 0 degrees, the elastic recovery elements will generate a restoring force, and the user must apply greater external force. Only when the door leaf 11 is closed can the door leaf 11 be pushed, and when the door leaf 11 is closed and adjacent to the fixed surface 12, there is still a strong closing force.

Through the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention only needs to drive the pressure accumulating slide blocks 34 through a single shaft 41, and drive the shaft 41 through the second sleeve 32 of the pressure accumulating unit 3a, so that the first page can be 21 or the second leaf 22 is pushed, the elastic return elements 47 are compressed simultaneously to generate an additive return force. It not only improves the closing force, but also has a streamlined structure and no direction restrictions for installation.

2. Importantly, the present invention can use the shaft segments 411 at different angles of the shaft member 41 and the ends 471 of the elastic return elements 47 and the corresponding slots 343, 333 or the corresponding recesses 442, 451. By changing the angle, the angle range within which the elastic return elements 47 can generate the restoring force is set, so that the present invention can achieve the opening and closing effects of Less hold on opening, back check power, and Latch power.

3. Moreover, the present invention can also adjust the threading depth of each pressure-regulating bolt 35 and the respective second sleeve 32, change the compression amount of the elastic return elements 47, and thereby adjust the recovery of the elastic return elements 47. The magnitude of the force is thereby matched with the rolling friction force between the bolts 43 and the action member 42 to achieve the function of adjusting the door closing speed.

4. In addition, the present invention can also easily install the pressure accumulation units 3a, 3b and the pivot unit 2 through modular design, and replace different pressure accumulation units 3a, 3b to obtain different use effects. , and meet different usage needs.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of this invention.

20:Pipeline

21:First page

211:First casing

22:Second page

221:Second casing

24:Wasi

25: Ring buckle

27: Locking latch

3a, 3b: Pressure storage unit

31:First sleeve

314: Pin hole

32:Second sleeve

321:Rotating part

322:Second gap

324: Rectangular hole

33: Pressure accumulating sliding sleeve

331: Incline

34: Pressure accumulation slider

341: reverse bevel

342: Rectangular hole

35: Pressure regulating bolt

4:Axis unit

41:Shaft parts

411: Shaft segment

42:Action parts

43: Bolts

44: First indexing piece

45: Second indexing piece

46: Ring parts

47: Elastic return element

48: Auxiliary elastic element

Claims (12)

A double spring hinge is suitable for connecting a door leaf and a fixed surface, and includes: a pivot unit including two leaves suitable for connecting the door leaf and the fixed surface, each of the leaves having at least one sleeve, The sleeves of the plates are arranged along an axial direction and define a pipeline around the axis; two pressure storage units are inserted through the pipeline along the axial direction, and each pressure storage unit includes one and one of the pressure storage units. A first sleeve that rotates together with the leaves, a second sleeve that is rotatably sleeved on the first sleeve, and a sleeve that is detachably mounted on the first sleeve and rotates with the first sleeve. a pressure accumulating sliding sleeve, and a pressure accumulating sliding block installed between the first sleeve and the second sleeve; the pressure accumulating sliding sleeve has an inclined surface; Inclined surface, at least one of the second sleeves of the pressure accumulation units rotates together with the other of the leaves; and a shaft unit includes a shaft member movably interposed between the pressure accumulation units along the axis direction. , and two sets of elastic return elements disposed between the shaft and the pressure accumulator units. The shaft has two opposite shaft segments that can pass through the pressure accumulator sliding sleeves along the axial direction. Each of the shaft segments is sleeved Connected to the respective pressure accumulating slide blocks and rotating together with the respective pressure accumulating slide blocks; thereby, when one of the sheets drives the first sleeves and the pressure accumulating sliding sleeves to rotate forward, or the Another leaf drives the second sleeves and the shaft to rotate forward, and the inclined surfaces of the pressure accumulating sliding sleeves and the reverse inclined surfaces of the pressure accumulating slide blocks push each other and compress the elastic return elements. An elastic force is generated to drive the corresponding leaf to reverse rotation. The double spring hinge of claim 1, wherein each first sleeve has two-phase intervals and a first notch extending from the end surface along the axial direction, and each pressure-accumulating sliding sleeve has two phases and forms The convex portions on the circumferential surface, the convex portions of each pressure accumulating sliding sleeve correspond to the first notches of the respective first sleeves, and the shaft segments of the shaft member can rotate through the first notches. Pressure accumulating sliding sleeve. The double spring hinge of claim 2, wherein the other leaf also has two fitting parts protruding from the inner surface and facing each other, and each second sleeve has a sleeve that is sleeved on the first a rotating part of the sleeve, and two limiting parts extending from the rotating part along the axial direction and defining two second notches, one of which has a second notch of the second sleeve corresponding to the fitting parts, and It also has a rectangular hole penetrating the rotating part and the limiting part along the axial direction. Each pressure accumulating slide block has a rectangular hole extending from one end surface to the other end surface along the axial direction. The shaft member The isometric section has a rectangular cross-section and fits into the corresponding rectangular hole. The double spring hinge according to claim 3, wherein each pressure accumulating sliding sleeve also has a slot formed on the circumferential surface and extending along the axial direction, and each pressure accumulating slide block also has a slot formed on the circumferential surface. Each elastic return element has two opposite ends, and each end can be selectively inserted into the corresponding slot. The double spring hinge according to claim 3, wherein the shaft unit further includes a first indexing piece, each of the elastic return elements has two opposite ends, and the first indexing piece is installed on another The second sleeve rotates together with the other second sleeve, and the first indexing piece has two phases spaced apart and shaped like A convex part is formed on the peripheral surface, and several wavy recessed parts are formed around the axis, and one of the recessed parts is engaged with the corresponding end part. The double spring hinge of claim 3, wherein the shaft unit further includes a second indexing piece, each of the elastic return elements has two opposite ends, and the second indexing piece is sleeved on the shaft member And rotates together with the shaft member and is inserted into the second sleeve. The second indexing piece has at least one recess formed on the circumferential surface. The at least one recess is engaged with the corresponding end. department. The double spring hinge as claimed in claim 4 or 5 or 6, wherein each shaft segment of the shaft member has four equiangularly distributed side surfaces surrounding the axis, and the side surfaces of one shaft segment are in contact with the other side. The side surfaces of the shaft segment are separated by an included angle, and the included angle is between 15 degrees and 75 degrees. The double spring hinge of claim 5, wherein each pressure accumulation unit further includes a pressure regulating bolt screwed to the first sleeve along the axial direction, and the pressure regulating bolt applies pressure to the pressure accumulating slide. sleeve, and through changes in threading depth, the second sleeve is forced to move along the axis direction. The double-spring hinge of claim 8, wherein the shaft unit further includes two auxiliary elastic elements, each of which is disposed between the shaft and a respective pressure-regulating bolt to constantly cause the shaft to move along the The elastic force that moves in this axis direction. The double spring hinge of claim 9, wherein the shaft unit further includes an action member and at least one bolt, the action member is installed on the second sleeve and together with the other second sleeve Rotate, the action member has two spaced high grooves, and two high groove shapes along the axis direction. The at least one bolt is connected to the shaft and is located between the shaft segments, and the at least one bolt can roll against the shaft. The action piece can sink into the high grooves or the low grooves. The double spring hinge according to claim 10, wherein the action member also has two protrusions spaced apart and formed on the circumferential surface, and the protrusions of the action member correspond to the protrusions of the other second sleeve. Wait for the second gap. The double spring hinge of claim 11, wherein the shaft unit further includes at least one ring member installed on the other second sleeve and rotating together with the other second sleeve, the ring member is located on the third There are two spaced apart protrusions formed on the circumferential surface between an indexing piece and the action member. The protrusions of the ring correspond to the second notches of the other second sleeve.

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