CN201115174Y - hub - Google Patents

Abstract

The utility model discloses a pivot device, including a pivot ware main part and a attenuator, this attenuator one end and pivot ware bulk phase are connected, including a damping shell, a damping body, one can promote spacing shell of damping body pivoted damping and an outer seal ring, this damping shell has the barrel portion of cylinder, from the bobbin tip that this barrel portion one end is perpendicular to inside extension formed and from this bobbin tip to the protruding post of this barrel portion internal protrusion, this damping body has the diapire and follows the section of thick bamboo wall that the periphery of diapire extends perpendicularly, this section of thick bamboo wall is inserted and is established between the barrel portion and the post portion of this damping shell, this outer seal ring is sealed between the other end and the damping body of the barrel portion of damping shell, at this outer seal ring, it has damping oil to seal between damping shell and the damping body. Use the utility model discloses the electronic product of pivot ware can produce vibrations hardly when opening and folding to can protect the electronic product better, also make the electronic product use more comfortable and can avoid dropping from the hand.

Description

hub

Technical field

The utility model relates to a hinge device, in particular to a hinge device mainly used in foldable electronic products such as mobile phones, DVs and digital cameras.

Background technique

Electronic products with audio-visual functions such as mobile phones, electronic dictionaries, PDAs, MP4s, etc. have been widely popularized in recent years. In order to make the display images of these electronic products as clear as possible for viewing, the display interface is required to be as large as possible, but for the convenience of carrying, the volume is required to be as small as possible. In order to solve the contradiction between large display interface and small volume, these electronic products are usually designed in the form of two parts folded together, and the two parts of the electronic product are generally connected by a hinge.

The structure of an existing hinge is shown in Figure 1. The hinge includes a housing 3', a rotating cam 60' is provided at one end of the housing 3', and a sliding cam is slidably installed inside the housing 3'. The cam 50', the housing 3' is also equipped with a compression spring 4' against the sliding cam 50'. The rotating cam 60' has a pushing portion 61', and the end surface of the sliding cam 50' has a circumferential sliding cam curved surface 51' composed of an ascending section curved surface and a descending section curved surface. This kind of hinge is used on foldable electronic products, when the two folded parts of the electronic product are opened to a certain angle, that is, when the apex of the push part 61' of the rotating cam 60' slides over the highest point of the sliding cam surface 51' of the sliding cam 50' Finally, even if the force is stopped at this time, the electronic product can still be opened automatically due to the rotation effect produced by the compression spring 4' and the sliding cam surface 51' on the pushing part 61'.

However, under the rotation effect of the compression spring 4' and the sliding cam surface 51' on the push part 61', the electronic product will be opened faster and faster, so that there will be a gap between the two folded parts of the electronic product when it is fully opened. Shock and cause vibration. When the two folded parts of the electronic product are folded, the folding speed will also become faster and faster, which will also produce impact and cause vibration. On the one hand, this vibration will have adverse effects on the performance of the electronic product itself, and on the other hand, if the user is not careful, the electronic product may fall from the user's hand.

Utility model content

The purpose of this utility model is to provide a hinge device which can avoid the impact force generated when the electronic product is opened and folded to solve the defects of the above-mentioned prior art.

In order to achieve the above object, the utility model hinge includes: a hinge main body and a damper, one end of the damper is connected with the hinge main body, the damper includes a damping shell, a damping body, and a damping body that can be pushed to rotate The damping limit shell and an outer sealing ring, the damping shell has a cylindrical body portion, a cylinder top formed by extending vertically inward from one end of the cylinder portion, and protruding from the cylinder top to the cylinder portion The convex column part of the damping body has a bottom wall and a cylinder wall extending vertically from the periphery of the bottom wall, the cylinder wall is inserted between the cylinder part and the convex column part of the damping shell, and the outer sealing ring is sealed on the Between the other end of the cylindrical part of the damping shell and the damping body, damping oil is sealed between the outer sealing ring, the damping shell and the damping body.

In summary, the utility model drives the damping body to rotate by the damping limiting shell, so that the damping body rotates to push the damping oil sealed between the outer sealing ring, the damping body and the damping shell, and then utilizes the viscous damping of the damping oil The effect is to suppress the tendency of the electronic product to open or close faster and faster so that it can reach a stable and slow opening or closing state, so that the two folded parts of the electronic product hardly generate vibration when it is fully opened or closed. Therefore, the utility model The hub can better protect the electronic product, and also make the electronic product comfortable to use and prevent it from falling out of the hand.

Description of drawings

In the accompanying drawings of the manual:

Fig. 1 is a three-dimensional exploded view of a conventional hub.

Fig. 2 is a perspective view of the hinge device of the present invention, in order to show the internal structure, the damping body, the damping shell and the shell are partially cut away.

FIG. 3 is an exploded perspective view of the hub shown in FIG. 2 .

FIG. 4 is a perspective view of the damping shell shown in FIG. 3 .

FIG. 5 is a perspective view from another angle of the damping shell shown in FIG. 4 .

FIG. 6 is a perspective view of the damping body shown in FIG. 3 .

FIG. 7 is a perspective view of another angle of the damping body shown in FIG. 6 .

FIG. 8 is a perspective view of the damping and limiting shell shown in FIG. 3 .

Fig. 9 is a perspective view from another angle of the damping and limiting shell shown in Fig. 8 .

FIG. 10 is a perspective view of the rotary cam shown in FIG. 3 .

FIG. 11 is a perspective view of the sliding cam shown in FIG. 3 .

The reference signs of each component in the figure are explained as follows:

Housing 3’ Compression spring 4’

Sliding Cam 50’ Sliding Cam Surface 51’

Rotate Cam 60’ Push 61’

Hinge main body 1 circlip 11

Limiting block 12 Central axis 13

Annular groove 131 Head 132

Housing 14 limited rotation wall 141

Compression spring 15 sliding cam 16

Sliding cam surface 161 Limited rotation plane 162

Turn the cam 17 Connecting block 171

Push part 172 Axle hole 173

Damper 2 Damping limit housing 21

Protrusion 211 Card slot 212

Axis hole 213 Convex edge 214

Limiting plane 215 Outer sealing ring 22

Inner sealing ring 23 Damping body 24

Bottom wall 241 Cylinder wall 242

Stopper 243 Outer Ring Groove 244

Inner Groove 245 Outer Groove 246

Shaft hole 247 Damping shell 25

Barrel part 251 Barrel top 252

Shaft hole 253 Protruding post 254

Outer ring recess 255 Anti-rotation block 256

Damping shaft 26 Raised ring 261

Ring groove 262 Snap ring 27

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Please refer to FIG. 2 and FIG. 3 , the hinge of the utility model includes a hinge main body 1 and a damper 2 .

The damper 2 includes a damping limiting shell 21, a damping body 24 is arranged on the upper part of the damping limiting shell 21, and a cylindrical damping shell 25 is set outside the damping body 24. A damping shaft 26 is pierced through the damping limiting shell 21 , the damping body 24 and the damping shell 25 , and a snap ring 27 is sleeved on the upper end of the damping shaft 26 .

Referring to Fig. 4 and Fig. 5, the damping shell 25 has a cylindrical body part 251, the upper end of the body part 251 extends vertically inward to form a tube top 252, and the middle part of the tube top 252 is provided with a vertical opening. Shaft hole 253 . The cylinder top 252 protrudes into the cylinder body 251 from around the shaft hole 253 to form a ring-cylindrical boss 254 . The outer edge of the lower circumference of the protruding column portion 254 is upwardly recessed to form an inner ring concave portion 255 . Two centrally symmetrical anti-rotation blocks 256 protrude from the outer surface of the cylinder portion 251 of the damping shell 25 for fixing on electronic products to prevent the damping shell 25 from rotating.

Please refer to FIG. 2 , FIG. 5 , FIG. 6 and FIG. 7 , the damping body 24 is cylindrical, and the damping body 24 has a bottom wall 241 and a cylinder wall 242 vertically extending from the periphery of the bottom wall 241 . The middle part of the bottom wall 241 defines a shaft hole 247 penetrating through the bottom wall 241 , and the lower end of the bottom wall 241 protrudes downward to form a fan-shaped block 243 . The outer surface of the cylinder wall 242 is recessed inwardly near the bottom wall 241 to form an annular outer ring groove 244 . The inner surface of the barrel wall 242 is recessed outward with a centrally symmetrical inner groove 245 extending in the axial direction. The outer surface of the cylinder wall 242 is recessed with a centrally symmetrical outer groove 246 extending in the axial direction. The cylinder wall 242 extends between the cylinder portion 251 of the damping shell 25 and the boss portion 254 , and the upper surface of the bottom wall 241 of the damping body 24 fits on the lower end of the boss portion 254 of the damping shell 25 .

Please refer to FIG. 6 , FIG. 8 and FIG. 9 , the damping and limiting shell 21 is cylindrical. The lower end of the damping and limiting shell 21 is recessed upward to form a locking groove 212 . A fan-shaped protrusion 211 protrudes upward from the upper surface of the damping limiting shell 21 , and the protrusion 211 can abut and cooperate with the stopper 243 on the damping body 24 to drive the damping body 24 to rotate. A central axis hole 213 communicating with the locking groove 212 is defined downwards in the substantially middle portion of the upper end surface of the damping and limiting shell 21 . The hole wall at the lower part of the central axis hole 213 is recessed outward so that the diameter of the lower part is slightly larger than that of the upper part, so that a convex edge 214 is formed at the intersection of the lower part and the upper part of the central axis hole 213 . The outer surface of the damping limiting shell 21 is provided with two center-symmetrical limiting planes 215 extending axially along the damping limiting shell 21, which are used to snap fit with electronic products so that the damping limiting shell 21 follows the Electronics spin together.

Please refer to FIG. 2 and FIG. 3 , the lower end of the damping shaft 26 protrudes to form an annular protruding ring 261 , and the upper end of the damping shaft 26 defines a ring groove 262 . The protruding ring 261 at the lower end of the damping shaft 26 is stuck against the protruding edge 214 of the damping limiting case 21; and the shaft hole 253 of the damping shell 25 to protrude from the damping shell 25 , so that the ring groove 262 is located outside the upper surface of the cylinder top 252 of the damping shell 25 . A snap ring 27 is clamped at the ring groove 262 of the damping shaft 26, and pressed against the upper surface of the cylinder top 252 of the damping shell 25, thereby assembling the damping limit shell 21, the damping body 24 and the damping shell 25 Together.

An outer sealing ring 22 is sleeved at the outer ring groove 244 of the damping body 24 (as shown in the sixth figure), and the outer sealing ring 22 is tightly pressed against the cylinder part 251 of the damping shell 25; An inner sealing ring 23 is sheathed at the inner ring concave portion 255 of the convex column portion 254 of the shell 25 (as shown in the fifth figure), and the inner sealing ring 23 is pressed against the upper surface of the bottom wall 241 of the damping body 24 , Thus, a closed space is formed between the cylinder part 251 and the boss part 254 of the damping shell 25, and damping oil (not shown in the figure) is sealed in the closed space.

Please refer to FIG. 2 and FIG. 3 , the hinge body 1 includes a rotating cam 17 , and a sliding cam 16 is provided on the lower part of the rotating cam 17 . The sliding cam 16 is covered with a casing 14 , and the sliding cam 16 can slide in the casing 14 along the axial direction of the casing 14 . The outer surface of the casing 14 is recessed to form two rotation limiting walls 141 extending axially along the casing 14 and symmetrical to the center. Also housed in the housing 14 is a pressure spring 15 that is pressed against the lower part of the sliding cam 16 and the housing 14 . A central shaft 13 passes through the rotating cam 17, the sliding cam 16 and the pressure spring 15. The upper end of the central shaft 13 protrudes toward the circumference to form a ring-shaped head 132 , and the head 132 presses against the rotating cam 17 . The lower end of the central shaft 13 defines an annular groove 131 , and a retaining spring 11 is clamped in the annular groove 131 .

Please refer to FIG. 3 and FIG. 11 , the upper end surface of the sliding cam 16 has a circumferential sliding cam curved surface 161 , and the sliding cam curved surface 161 has an ascending curved surface and a descending curved surface. The outer surface of the sliding cam curved surface 161 of the sliding cam 16 is recessed to form two rotation-limiting planes 162 extending axially along the sliding cam 16 that are centrally symmetrical. The rotation-limiting planes 162 engage with the rotation-limiting wall 141 of the housing 14 Therefore, the sliding cam 16 can slide axially relative to the housing 14 but cannot rotate relative to the housing 14 .

Please refer to FIG. 10 , the rotating cam 17 has a connecting block 171 in the shape of a cuboid with arc-shaped ends and a push portion 172 connected to the lower end of the connecting block 171 . The rotating cam 17 is also provided with an axle hole 173 that passes through the connecting block 171 and the push portion 172 up and down. The connecting block 171 snaps into the slot 212 (as shown in FIG. 7 ) of the damping limiting case 21 of the damper 2 , so that the movable rotating cam 17 rotates together with the damping limiting case 21 . The push portion 172 abuts against the sliding cam curved surface 161 (as shown in the eleventh figure) of the sliding cam 16 .

When the hinge device of the utility model is in use, the damping and limiting shell 21 is fixed on a folded part of the foldable electronic product, and the housing 14 and the damping shell 25 are fixed on the other folded part of the foldable electronic product.

As mentioned above, when the electronic product using the hinge of the present invention is opened, the damping and limiting shell 21 rotates, while the shell 14 and the damping shell 25 are relatively fixed. The rotating cam 17 rotates together with the damping limit case 21, and the push portion 172 of the rotating cam 17 pushes against the sliding cam 16 and slides along the rising curved surface of the sliding cam curved surface 161 of the sliding cam 16, while the sliding cam 16 acts as a shaft along the central axis 13. Moving to compress the compression spring 15 , at this time the bump 211 of the damping limiting shell 21 does not abut against the stopper 243 of the damping body 24 , so the damping body 24 does not rotate with the damping limiting shell 21 .

When the push portion 172 of the rotating cam 17 slides to the curved surface of the sliding cam surface 161 of the sliding cam 16, the damping limit housing 21 rotates until its projection 211 abuts against one side of the stopper 243 of the damping body 24 , at this moment, the damping body 24 starts to rotate together with the damping limiting shell 21 , so that the damping body 24 rotates relative to the damping shell 25 . Since the damping body 24 is inserted between the cylindrical portion 251 and the boss portion 254 of the damping shell 25, the damping oil with viscous properties is sealed between the damping body 24 and the damping shell 25 of the damper 2, especially the damping oil of the damping body 24. The inner groove 245 and the outer groove 246 provided on the cylinder wall 242 increase the contact area between the damping body 24 and the damping oil, so the viscous force of the damping oil can effectively slow down the rotation of the damping body 24, so that the damper 2 It will restrict the trend of faster and faster opening speed of electronic products and achieve a stable and slow opening state. In this state, there is no shock when the electronic product is fully opened, so there can be almost no vibration.

When the electronic product is folded, the damping and limiting shell 21 rotates while the housing 14 and the damping shell 25 are relatively fixed. When the push portion 172 of the rotating cam 17 slides along the curved surface of the rising section of the sliding cam curved surface 161 of the sliding cam 16 , the damping body 24 does not rotate with the damping limiting shell 21 . When the push portion 172 of the rotating cam 17 slides to the curved surface of the sliding cam surface 161 of the sliding cam 16, the protrusion 211 on the damping limit case 21 abuts against the other side of the stopper 243 on the damping body 24 , the damping body 24 starts to rotate together with the damping limiting shell 21 , so that the damping body 24 rotates relative to the damping shell 25 . The same as the principle of the opening stage, the damping oil sealed between the damping body 24 and the damping shell 25 of the damper 2 starts to play a role, so the rotation of the damping body 24 is effectively slowed down, so that the damper 2 restricts the folding speed of the electronic product. faster and faster trend and reach a smooth slow fold state. In this state, the electronic product will not produce impact when folded, so it can hardly produce vibration.

Therefore, the hinge device of the utility model can avoid the impact force generated when the electronic product is opened or folded, thereby better protecting the electronic product, and making the electronic product more comfortable to use and avoiding falling from the hand.

To sum up, the hinge device of the present invention has disclosed related technologies in a specific and detailed manner through the above-mentioned embodiments and related drawings, so that those skilled in the art can implement them accordingly. And above-mentioned embodiment just illustrates the preferred embodiment of the present utility model, and the present utility model can have multiple variation design, also can increase by protruding on the cylinder wall 242 of damping body 24 etc. Contact area with damping oil. Therefore, the patent scope of the utility model is not limited to the above-mentioned embodiments, and all equivalent modifications or changes made by those skilled in the art according to the utility model should be included in the patent scope of the new utility model.

Claims (9)

1. pivot device, comprise a pivot device main body and a damper, this damper one end is connected with the pivot device main body, it is characterized in that: described damper comprises a damping shell, one damping body, one can promote a spacing shell of damping and the exterior seal ring that damping body rotates, this damping shell has columnar barrel, from this barrel one end vertically extend internally tube top that forms and the convex pillar part that in this barrel, protrudes out from this top, the barrel that this damping body has diapire and comes out from the periphery vertical extent of diapire, this barrel is plugged between the barrel and convex pillar part of this damping shell, this exterior seal ring is sealed between the other end and damping body of barrel of damping shell, at this exterior seal ring, be sealed with damping oil between damping shell and the damping body.

2. pivot device as claimed in claim 1, it is characterized in that: described pivot device main body comprises a rotating cam, a sliding cam, a pressing spring and a housing, rotating cam is replaced on sliding cam, and sliding cam is fastened in the housing, and pressing spring is replaced between housing and sliding cam.

3. pivot device as claimed in claim 2, it is characterized in that: the spacing shell of the described damping lower surface recessed draw-in groove that is formed with that makes progress, described rotating cam has a contiguous block and is connected the pushed section of contiguous block lower end, and described contiguous block snaps in the draw-in groove of the spacing shell of damping; The upper surface of described sliding cam has a circumferential sliding cam curved surface, and described pushed section is replaced on the sliding cam curved surface of sliding cam.

4. pivot device as claimed in claim 1 is characterized in that: described pivot device further comprises an inner seal ring, and this inner seal ring is sealed between the diapire of convex pillar part and damping body.

5. pivot device as claimed in claim 4 is characterized in that: the tube of described damping shell offers an axis hole that runs through convex pillar part on the top; Offer a shaft hole that runs through this diapire on the diapire of described damping body; Offer central axis hole on the spacing shell of described damping, described pivot device further comprises a damping axle, this damping axle pass axis hole, the damping body of damping shell shaft hole, inner seal ring, the spacing shell of damping central axis hole and fasten on damping shell and the spacing shell of damping.

6. pivot device as claimed in claim 5 is characterized in that: the diapire of described damping body protrudes downwards and is formed with a block; The spacing shell of described damping upper surface protruding upward one can push against the projection of the block of damping body.

7. pivot device as claimed in claim 6 is characterized in that: described block and projection all are the fan annular.

8. pivot device as claimed in claim 4 is characterized in that: inwardly offer inner annular recess on the barrel outer surface of described damping body, described exterior seal ring snaps in the inner annular recess; The bottom of the convex pillar part of described damping shell upwards has been recessed to form interior circular rabbet, and described inner seal ring snaps in the interior circular rabbet.

9. pivot device as claimed in claim 1 is characterized in that: the barrel of described damping shell is protruding with anti-switch block, and the outer surface of the spacing shell of damping is provided with spacing plane.

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