TWI852253B - Hinge device - Google Patents

Abstract

A hinge device includes two leaf units, an axis unit pivotally connecting the leaf units, and a plurality of expansion bolts for connecting the leaf units with a door leaf and a mounting surface. Each of the expansion bolts includes a screw unit and an expansion unit. The screw unit has a screw part and a bolt part screwed to the screw part. The expansion unit is inserted into a hole of the door leaf or the mounting surface, and includes a plurality of spring plates, a buckle ring surrounding a first end of the spring plates, and a tie ring surrounding the spring plates and located between the first end and a second end. In this way, the purpose of tightening is achieved by the spring plates that can expand. There is also a margin of movement between the springs and the holes that allows them to move up and down, left and right, which can reduce the impact of tolerances and improve the smoothness of installation.

Description

Hinge device

The present invention relates to a hinge device, in particular to a hinge device suitable for connecting a door leaf and a mounting surface.

Generally, when a "door leaf" is installed on a door frame or a wall, a hinge is used to connect the door leaf and the door frame (or the wall). During installation, several bolts are passed through the two leaves of the hinge and then screwed to the door leaf and the door frame (or the wall). In this way, the purpose of fixing is achieved. However, when there is an error between the position of the holes in the leaves through which the bolts pass and the position of the holes in the door frame (or the wall), the installation angle of the door leaf will be offset, resulting in a technical problem of excessive gap or mutual interference between the door leaf and the door frame (or the wall).

The expansion bolts commonly seen on the market are mainly used for walls with high hardness that cannot be drilled with screw holes. They use the friction self-locking between the hole in the wall, the sleeve driven into the hole, and a screwed bolt to achieve the purpose of fixing.

Referring to FIG. 1 and FIG. 2, a known expansion bolt 1 disclosed in Patent Publication No. 394334U of the Republic of China is described, which mainly comprises two long arc-shaped elements 11 which are aligned with each other and surround an axis X, a plastic film 12 which covers the outer surface of the long arc-shaped elements 11, a bolt 13 which passes between the long arc-shaped elements 11 along the axis X, and a nut 14 which is screwed with the bolt 13 and is located outside the long arc-shaped elements 11. The bolt 13 has a conical body 131 which can push the long arc-shaped elements 11 to expand. Thus, although the expansion bolt 1 can also achieve the purpose of fixing, it has the following disadvantages when used in the installation of the hinge and the door leaf, the door frame (or the wall):

1. Under the idea of friction self-locking of the expansion bolt 1, there is no gap between the expansion bolt 1 and the hole of the door leaf, the door frame (or the wall) for movement, so the door leaf will also have the technical problem of installation angle deviation.

2. Since the plastic film 12 is wrapped around the outer surface of the long arc-shaped components 11, if the plastic film 12 is too thick and not easily damaged, the long arc-shaped components 11 will encounter greater resistance when expanding. If the plastic film 12 is too thin, it is easy to be damaged during storage, taking or transportation, causing the long arc-shaped components 11 to scatter.

3. Part of the bolt 13 and the nut 14 are exposed outside the long arc-shaped element 11, which is not only unsightly but also interferes with other elements.

Therefore, the purpose of the present invention is to provide a hinge device that can be lifted and installed smoothly, and has a simple, stable and beautiful structure.

Therefore, the expansion bolt of the present invention includes a threaded unit and an expansion unit.

The screw-on unit includes a screw-on component and a bolt component that is detachably screwed to the screw-on component along an axial direction.

The expansion unit includes a plurality of spring plates, a buckle ring, and a tie ring. The spring plates are arranged around the axis and spaced from each other. Each spring plate has a first end and a second end opposite to each other. The buckle ring surrounds the first end of the spring plates. The tie ring surrounds the spring plates and is located between the first end and the second end. The spring plates change between a retracted state and an expanded state. In the retracted state, the second ends are adjacent to the bolt and define a first maximum outer diameter. In the expanded state, the second ends expand away from the bolt with the tie ring as a fulcrum and define a second maximum outer diameter. The second maximum outer diameter is greater than the first maximum outer diameter.

The hinge device of the present invention is suitable for connecting a door leaf and a mounting surface. The door leaf or the mounting surface contains a solid part defining a plurality of holes. The hinge device includes two leaf units, an axis unit, and a plurality of expansion bolts as described above.

The leaf units are suitable for connecting to the door leaf or the mounting surface.

The axis unit pivots the leaf units along an axis direction, so that one of the leaf units can rotate relative to another leaf unit with the axis as the center.

The expansion unit of each expansion bolt and the screw-in component are inserted into respective holes, and the bolt passes through the corresponding leaf unit and is screwed into the screw-in component, and forces the springs to change from the retracted state to the expanded state and press against the solid part.

The effect of the present invention is that through the design of the separated spring pieces, the spring pieces can be expanded in the direction away from the bolt with the tie ring as the fulcrum to achieve the purpose of tightening. And there is a movable margin between the spring pieces and the bolt, which can reduce the influence of tolerance and improve the smoothness of installation.

2: Screw unit

21: Screw-on parts

211: Flat joint

212: screw hole

22: Bolts

221: Bolt

222: Screw

3: Expansion unit

30: Open end

31: Shrapnel

311: First end

312: Second end

313: Ring groove

314: Annular Groove

315: Inner surface

316: Slope

317: Joint surface

32: Buckle

321: Ring wall

322: Forced to reach the edge

323: Limit the environment

33: Beam ring

4: Page unit

40: Channel

41: Ring seat set

42: Page

421: Keyhole

5: Axis unit

61: Mounting surface

62: Door leaf

t: spacing

d1: first inner diameter

d2: Second inner diameter

d3: third inner diameter

D1: first maximum outer diameter

D2: Second largest outer diameter

a1: Entity Department

a2: Hole

X: axis

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a cross-sectional view illustrating a known expansion bolt disclosed in Patent Publication No. 394334U of the Republic of China; FIG. 2 is an incomplete three-dimensional view illustrating two long arc-shaped elements of the known expansion bolt and a plastic film; FIG. 3 is a three-dimensional exploded view illustrating an embodiment of the expansion bolt of the present invention; FIG. 4 is a three-dimensional view of the embodiment; FIG. 5 is a cross-sectional view illustrating the Several springs of the embodiment change to a retracted state; FIG. 6 is a cross-sectional view similar to FIG. 5, but the springs change to an expanded state; FIG. 7 is a three-dimensional exploded view, illustrating that several of the embodiments, two leaf units, and an axis unit form a hinge device; FIG. 8 is a three-dimensional view, illustrating that the embodiments are installed on the leaf units; FIG. 9 is a schematic view, illustrating that the embodiments are connected to the leaf units and a door leaf and a mounting surface; and FIG. 10 is a cross-sectional view taken along the line X-X in FIG. 9.

Referring to Figures 3, 4 and 5, an embodiment of the expansion bolt of the present invention includes a threaded unit 2 and an expansion unit 3.

The screw unit 2 includes a screw part 21 and a bolt 22 that is detachably screwed to the screw part 21 along an axis X direction. The screw part 21 has four flat surfaces 211 and a screw hole 212 extending from one end along the axis X direction to the other end. The flat surfaces 211 are grouped in pairs, and any two adjacent planes form an angle that is substantially 90 degrees. The bolt 22 has a bolt head 221 and a screw rod 222 that extends from the bolt head 221 along the axis X direction and is screwed to the screw hole 212.

The expansion unit 3 includes a plurality of springs 31, a buckle ring 32, and a tie ring 33.

The spring sheets 31 are arranged around the axis X and are spaced apart from each other. Each spring sheet 31 has a first end 311 and a second end 312 opposite to each other, an annular groove 313 formed at the first end 311 and adjacent to one of the opening ends 30, and an annular groove 314 formed between the first end 311 and the second end 312. The second end 312 has two inclined surfaces 316 formed on an inner surface 315 and spaced apart along the axis X direction, and a joint surface 317 formed between the inclined surfaces 316. The inner surfaces 315 of the spring sheets 31 define a first inner diameter d1. The inclined surfaces 316 of the elastic sheets 31 define a second inner diameter d2, and the joint surfaces 317 of the elastic sheets 31 define a third inner diameter d3. The third inner diameter d3>the second inner diameter d2>the first inner diameter d1.

The buckle ring 32 surrounds the first end 311 of the elastic sheets 31 and has an annular wall 321 for tightening the elastic sheets 31, an abutting edge 322 connected to one end of the annular wall 321 and abutting against one of the opening ends 30, and a limiting edge 323 connected to the other end of the annular wall 321 and corresponding to the annular groove 313.

The tie ring 33 surrounds the elastic sheets 31 and is embedded in the annular groove 314, and is located between the first end 311 and the second end 312.

Referring to FIG. 4 and FIG. 5 , the spring sheets 31 change between a retracted state (as shown in FIG. 4 and FIG. 5 ) and an expanded state (as shown in FIG. 6 ). In the retracted state, the second end portions 312 are adjacent to the bolt 22 and define a first maximum outer diameter D1. At this time, the screw member 21 is inserted between the joint surfaces 317 and the flat surfaces 211 are against the joint surfaces 317. In the expanded state, the second end portions 312 expand away from the bolt 22 with the tie ring 33 as a fulcrum and define a second maximum outer diameter D2, and the second maximum outer diameter D2> the first maximum outer diameter D1. At this time, the screw member 21 contacts the inner surface 315 of the spring sheets 31, and the flat surfaces 211 push the inner surface 315 of the spring sheets 31.

When the expansion unit 3 and the screw-in component 21 are inserted into a hole a2 defined by a solid portion a1, and the bolt 22 is rotated and locked in the positive direction by a hand tool (not shown), the screw-in component 21 can be moved along the axis X direction toward the bolt head 221 through the screwing relationship between the bolt 22 and the screw-in component 21. In the process of the movement of the screw-in component 21, the corresponding inclined surfaces 316 and the inner surfaces 315 of the elastic sheets 31 are pushed by the joint surfaces 317, so that the second end portions 312 of the elastic sheets 31 expand in a direction away from the bolt 22 with the tie ring 33 as a fulcrum. Thereby, the second end 312 of the elastic sheet 31 will form a friction self-locking with the solid part a1 to achieve the purpose of fixing.

Referring to Figures 7, 8 and 9, the eight expansion bolts of the present invention can form a hinge device with two leaf units 4 and an axis unit 5. The hinge device is suitable for connecting a mounting surface 61 and a door leaf 62. The mounting surface 61 can be a wall surface or a frame surface of a door frame. The mounting surface 61 or the door leaf 62 includes a solid portion a1 defining four holes a2.

Each of the leaf units 4 includes a ring seat assembly 41 surrounding the axis X and defining a channel 40, and a leaf 42 connected to the ring seat assembly 41 and suitable for connecting to the door leaf 62 or the mounting surface 61. The leaf 42 has four lock holes 421.

The axis unit 5 is inserted into the channels 40 of the leaf units 4 along the axis X direction, so that one of the leaf units 4 can rotate relative to the other leaf unit 4 with the axis X as the center.

Referring to Fig. 5, Fig. 6, Fig. 9 and Fig. 10, in the present embodiment, the first maximum outer diameter D1 of the elastic sheet 31 of each expansion bolt is smaller than the hole diameter of each hole a2. The second maximum outer diameter D2 of the elastic sheet 31 of each expansion bolt is not smaller than the hole diameter of each hole a2. The difference between the first maximum outer diameter D1 of the elastic sheet 31 of each expansion bolt and the hole diameter of each hole a2 is between 1.5 mm and 2.5 mm, preferably 2.2 mm. Thus, if viewed from a single direction, such as the left side of Fig. 5, a distance t is defined between the first maximum outer diameter D1 of the elastic sheet 31 of each expansion bolt and the hole diameter of each hole a2. The distance t is 1.1 mm. That is to say, each expansion bolt can have a 2.2mm margin of motion with the solid part a1, and can move around the axis X. The movement direction includes but is not limited to upward movement of 0mm~1.1mm, downward movement of 0mm~1.1mm, leftward movement of 0mm~1.1mm, and rightward movement of 0mm~1.1mm.

In this embodiment, the door leaf 62 is mounted on the mounting surface 61 using three hinge devices. The steps for mounting the door leaf 62 are further described below:

Step 1: Drill holes in the door leaf 62 and the mounting surface 61 to form 24 holes a2.

Step 2: Assemble 24 expansion bolts to 24 sheets 42 of 3 sheet units 4. When assembling, only need to insert the retaining ring 32 of each eight expansion bolts into the locking holes 421 of each sheet unit 4, so that the bolt 22 of each expansion bolt passes through the respective locking holes 421 and the corresponding open end 30, and then screws into the respective screwing parts 21. In this way, each eight expansion bolts and each sheet unit 4 can be combined into a hinge device, and a total of three hinge devices are combined.

Step 3: Insert the expansion units 3 of the expansion bolts into the 12 holes a2 of the mounting surface 61 and the 12 holes a2 of the door leaf 62. At this time, the springs 31 of the expansion units 3 are in a retracted state, and there is a 2.2mm margin of movement between each expansion bolt and the solid part a1, and it can move around with the axis X as the center.

Step 4: Rotate the bolts 22 of the expansion bolts at the highest and lowest points on each leaf unit 4 along the axis X direction, so that the corresponding screwed parts 21 of the expansion bolts contact the inclined surfaces 316 of the spring sheets 31, and push the spring sheets 31 to expand slightly from the retracted state to obtain positioning. In this way, the door leaf 62 will not fall off the mounting surface 61.

Step 5: Gently move the door leaf 62 to the most suitable position so that each expansion bolt can automatically find the correct position by moving 0mm~1.1mm upward, 0mm~1.1mm downward, 0mm~1.1mm leftward, or 0mm~1.1mm rightward with the axis X as the center.

Step 6: Check whether the gap between the door leaf 62 and the mounting surface 61 is appropriate and correct. If yes, proceed to the next step. If not, return to step 5.

Step 7: Rotate and tighten the bolt 22 of each expansion bolt in the forward direction, so that the springs 31 of each expansion bolt expand from the retracted state in the direction away from the bolt 22, until they contact with the corresponding solid part a1, and form a friction self-locking with the corresponding solid part a1. In this way, the door leaf 62 can be fixed on the mounting surface 61, achieving the purpose of connecting the door leaf 62 and the mounting surface 61.

It is worth noting that, although each of the spring plates 31 of each expansion bolt may have a different spacing t with the corresponding solid portion a1, under the condition that each of the spring plates 31 allows different expansion amplitudes, the spring plates 31 of each expansion bolt can automatically expand to the correct position.

It should be noted that the expansion bolts are not limited to connecting the door leaf 62 and the mounting surface 61. In other variations of this embodiment, they can also be used for any other objects that need to be fixed to the solid part a1 (not shown), as shown in FIG. 6 .

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

1. The spring sheets 31 of the present invention are restrained by the buckle ring 32 and the tie ring 33, which not only makes the combination more stable, but also makes it difficult to be damaged or fall off. The spring sheets 31 are not only easy to process, but also the sleeve-type assembly method is relatively simple.

2. Furthermore, due to the special position of the tie ring 33, the second end 312 of the springs 31 can expand with the tie ring 33 as a fulcrum. When the springs 31 are independent, the expansion range of the second end 312 will not be limited by the tie ring 33 or the buckle ring 32, and can be more tightly combined with the corresponding hole a2 to improve the stability during locking.

3. The screw fitting 21 of each expansion bolt and the screw rod 222 of the bolt 22 are hidden in the spring sheets 31, and only the bolt head 221 of the bolt 22 is exposed. Overall, it is not only more beautiful, but also less likely to interfere with other components.

4. More importantly, each expansion bolt can have a 2.2mm margin of motion with the corresponding solid part a1, and can move around the axis X. Thus, when installing the door leaf 62, the door leaf 62 can move up, down, left, and right, and automatically find the appropriate angle and position, and has a 3D adjustment function. It can not only reduce the impact of tolerance, but also improve the smoothness and simplicity of installation, and greatly improve the installation quality.

However, the above is only an example of the implementation of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

21: Screw-on parts

211: Flat joint

212: screw hole

22: Bolts

221: Bolt

222: Screw

30: Open end

31: Shrapnel

311: First end

312: Second end

313: Ring groove

314: Annular Groove

315: Inner surface

316: Slope

317: Joint surface

32: Buckle

321: Ring wall

322: Forced to reach the edge

323: Limit the environment

33: Beam ring

t: spacing

d1: first inner diameter

d2: Second inner diameter

d3: third inner diameter

D1: first maximum outer diameter

X: axis

Claims (5)

A hinge device is used to connect a door leaf and a mounting surface. The door leaf or the mounting surface includes a solid portion defining a plurality of holes. The hinge device includes: two leaf units, which are used to connect the door leaf or the mounting surface; an axis unit, which pivots the leaf units along an axis so that one of the leaf units can rotate relative to the other leaf unit with the axis as the center. and a plurality of expansion bolts, each of which includes a threaded unit and an expansion unit, wherein the threaded unit has a threaded member and a bolt member that is detachably threaded to the threaded member along an axial direction, and the expansion unit includes a plurality of spring sheets, a buckle ring, and a tie ring, wherein the spring sheets are arranged around the axis and are spaced apart from each other, and each of the spring sheets has a first end opposite to the first end. a second end portion, the buckle ring surrounds the first end portion of the elastic sheets, the tie ring surrounds the elastic sheets and is located between the first end portion and the second end portion, the elastic sheets change between a retracted state and an expanded state, in the retracted state, the second end portions are adjacent to the bolt and define a first maximum outer diameter, in the expanded state, the second end portions move away from the bolt with the tie ring as a fulcrum The bolt expands in the direction of the bolt and defines a second maximum outer diameter, the second maximum outer diameter> the first maximum outer diameter, each of the expansion units and the respective screw parts are inserted into respective holes, the bolt of each screw unit passes through the corresponding leaf unit and is screwed to the screw part, and forces the springs to change from the retracted state to the expanded state and press against the solid part. A hinge device as described in claim 1, wherein each leaf of the leaf unit has a plurality of lock holes, and each bolt of the expansion bolt passes through a respective lock hole. The hinge device as described in claim 2 includes eight expansion bolts, and each of the leaf units has eight locking holes. A hinge device as described in claim 1, wherein the first maximum outer diameter of the spring plates of each expansion bolt is smaller than the diameter of the respective hole, and the second maximum outer diameter of the spring plates of each expansion bolt is not smaller than the diameter of the respective hole. A hinge device as described in claim 4, wherein the difference between the first maximum outer diameter of the springs of each expansion bolt and the diameter of the respective holes is between 1.5 mm and 2.5 mm.

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