CN201071876Y - Pivot device - Google Patents

Abstract

The utility model discloses a hinge device, including a hinge device body and a damper. The damper includes a relay body, a swivel is provided on the relay body, and a fixed body is sleeved on the outside of the swivel and the relay body. Damping oil is sealed between the upper part of the swivel and the fixed body by means of an inner sealing ring and an outer sealing ring. Two anti-rotation blocks protrude from the fixed body. A fan-shaped block is provided at the lower part of the swivel. A fan-shaped convex block is provided on the upper end surface of the relay body, and the convex block cooperates with the block. The lower end surface of the relay body is recessed upward to form a connecting groove. The hinge device body includes a rotating cam, a connecting block that cooperates with the connecting groove is provided on the rotating cam, a sliding cam is provided at the lower part of the rotating cam, and a compression spring is abutted at the lower part of the sliding cam. When the electronic product using the hinge device of the utility model is opened and folded, almost no vibration can be generated, thereby better protecting the electronic product, making the electronic product more comfortable to use and preventing it from falling 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, PDAs and notebook computers.

Background technique

A variety of electronic products have appeared in recent years, such as mobile phones, electronic dictionaries, PDAs, MP3 and MP4, etc. These electronic products usually have audio-visual functions. In order to make images clear and easy to watch, the display interfaces of these electronic products need to be as large as possible; however, for easy portability, these electronic products need to be as small as possible. In order to solve the contradiction between large display interface requirements and small volume requirements, 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 a current 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' 50', and a compression spring 4' against the sliding cam 50' is installed in the housing 3'. 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 sliding cam surface 51' of the sliding cam 50' After the highest point, 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 push part 61'.

However, under the rotation effect of the pressing spring 4' and the sliding cam curved surface 51' on the pushing 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 fully opened. Impact and cause vibration. When the two folded parts of the electronic product are folded, the folding speed will also become faster and faster, so impact and vibration will also be generated. 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 that can reduce the vibration when the electronic product is opened and folded, so as to better protect the electronic product and make the use of the electronic product more comfortable.

In order to achieve the above object, the hinge device provided by the utility model includes a hinge device main body, the hinge device main body includes a rotating cam, a sliding cam and a pressure spring, the lower part of the rotating cam has a push part, and the upper end surface of the sliding cam has a circumferential direction. The sliding cam curved surface has an ascending section curved surface and a descending section curved surface, the push part of the rotating cam abuts against the sliding cam curved surface, and one end of the pressure spring abuts against the sliding cam; a damper is matched with the rotating cam, The damper includes a fixed body and a rotating body matched with each other, and damping oil is sealed between the fixed body and the rotating body.

As mentioned above, since the hinge of the utility model adds a damper that cooperates with the rotating cam, after the electronic product using the hinge is opened to a certain extent, the push part of the rotating cam slides to the curved surface of the descending section of the sliding cam surface Finally, on the one hand, the electronic product can still be opened automatically due to the rotation effect of the pressure spring and the curved surface of the sliding cam on the push part of the rotating cam; Due to the hysteresis damping effect, the tendency of electronic products to automatically open faster and faster can be limited to achieve a stable and slow opening state, so that when the two folded parts of the electronic product are fully opened, there is almost no vibration. The same principle applies to electronic products when they are folded together, and there is almost no vibration. Therefore, the hinge device of the utility model can better protect the electronic product, and also make the electronic product more comfortable to use and avoid falling from the hand.

Description of drawings

In the accompanying drawings

FIG. 1 is an exploded perspective view of a conventional hinge shown in FIG. 1 .

Fig. 2 is a three-dimensional view of the hinge device of the present invention, in order to show the internal structure, the fixed body 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 fixed body shown in Fig. 2 .

Fig. 5 is a perspective view of the fixed body shown in Fig. 4 in another direction.

FIG. 6 is a perspective view of the swivel shown in FIG. 2 .

FIG. 7 is a perspective view of the relay shown in FIG. 2 .

FIG. 8 is a perspective view from another direction of the relay shown in FIG. 7 .

FIG. 9 is a perspective view of the rotary cam shown in FIG. 2 .

FIG. 10 is a perspective view of the sliding cam shown in FIG. 2 .

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

[Background technique]

Housing 3’ Compression spring 4’

Sliding Cam 50’ Sliding Cam Surface 51’

Rotate Cam 60’ Push 61’

[this utility model]

Hub body 100 circlip 1

Limiting block 2 Housing 3

Compression spring 4 slide cam 50

Sliding cam surface 51 Rotating cam 60

Push part 61 Connection block 62

Shaft hole 63 Central shaft 11

Annular groove 111 Damper 200

Relay body 70 bump 71

Axis hole 72 Convex groove 73

Coupling Groove 74 Swivel 80

Stopper 81 Raised part 82

Inner ring recess 83 Shaft hole 85

Inner convex ring groove 86 Inner sealing ring 9

Damping shaft 120 Convex edge 121

Card slot 122 fixed body 130

Cylinder part 131 Outer convex ring part 132

Inner convex ring part 133 anti-rotation block 134

Shaft hole 135 Outer ring groove 136

Barrel top 137 Outer sealing ring 14

Compression ring 15 Snap ring 16

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 present invention includes a hinge main body 100 and a damper 200 .

The damper 200 includes a relay body 70 , on which a rotating body 80 is arranged, and a cylindrical fixed body 130 is sheathed on the outer surface of the rotating body 80 and the relay body 70 . A damping shaft 120 is pierced through the intermediate body 70 , the swivel body 80 and the fixed body 130 . A compression ring 15 is sleeved on one end of the damping shaft 120 .

Please refer to FIG. 4 and FIG. 5 , the fixed body 130 includes a cylindrical body part 131 , and the upper end of the body part 131 is provided with a top part 137 . A shaft hole 135 penetrating up and down is provided in the middle of the cylinder top 137 . A circular outer convex ring portion 132 protrudes downward from the top portion 137 of the cylinder portion 131 . A ring-shaped inner convex ring portion 133 protrudes downward from the circumference of the shaft hole 135 on the cylinder top 137 . The upper surface of the cylinder top 137 of the fixed body 130 is recessed downward from the circumference of the shaft hole 135 to form an annular outer ring groove 136 . Two centrally symmetrical anti-rotation blocks 134 protrude from the cylinder portion 131 of the fixed body 130 for preventing the fixed body 130 from rotating after being fixed on an electronic product.

Referring to FIG. 3 , FIG. 4 and FIG. 6 , the swivel body 80 has a cylindrical shape as a whole, a fan-shaped block 81 is provided at the lower part of the swivel body 80 , and a shaft hole 85 is opened on the swivel body 80 . The upper part of the swivel 80 protrudes upwards with a raised portion 82 adapted to the space between the inner convex ring portion 133 and the outer convex ring portion 132 on the fixed body 130, and the inner side of the raised portion 82 is provided with an inner convex ring groove 86. The outer edge of the upper circumference of the rotating body 80 is depressed downward to form an inner ring recess 83 .

Please refer to FIG. 7 and FIG. 8 , the relay body 70 is cylindrical as a whole. The upper end surface of the intermediate body 70 is provided with a fan-shaped protrusion 71 . The lower end of the relay body 70 is recessed upward to form a connecting groove 74 , which is in the shape of a cuboid with arc surfaces at both ends. The intermediate body 70 is provided with a central axis hole 72 penetrating up and down, and the lower part of the central axis hole 72 has a convex edge groove 73 .

Please refer to FIG. 3 , the lower end of the damping shaft 120 protrudes a protruding edge 121 toward the circumference, and the upper end of the damping shaft 120 is provided with a slot 122 .

Referring to Fig. 2, Fig. 4 and Fig. 6, the raised portion 82 on the swivel 80 extends into the space between the inner convex ring portion 133 and the outer convex ring portion 132 on the fixed body 130, and the inner convex ring portion 132 on the fixed body 130 The convex ring portion 133 extends into the inner convex ring groove 86 on the rotating body 80 . Such a mutually extending structure of the rotating body 80 and the fixed body 130 can increase the matching area between the two, and enhance the damping effect of the damper 200 .

Please refer to FIG. 2 , FIG. 4 , FIG. 6 and FIG. 7 , the damping shaft 120 passes through the shaft hole 135 of the fixed body 130 , the shaft hole 85 of the rotating body 80 and the central shaft hole 72 of the intermediate body 70 .

Referring to FIG. 2 , FIG. 4 , FIG. 5 and FIG. 6 , an inner sealing ring 9 is provided between the outer convex ring portion 132 of the fixed body 130 and the inner ring concave portion 83 of the rotating body 80 . The outer ring groove 136 is provided with an outer sealing ring 14 , and the outer sealing ring 14 is pressed onto the fixed body 130 by means of the pressure ring 15 and sleeved on the damping shaft 120 . Damping oil (not shown in the figure) is sealed between the upper part of the rotating body 80 and the fixed body 130 via the inner sealing ring 9 and the outer sealing ring 14 .

Referring to FIG. 2 , FIG. 3 and FIG. 8 , the protruding edge 121 on the damping shaft 120 is disposed in the protruding edge groove 73 of the intermediate body 70 . The snap ring 16 is locked in the slot 122 on the damping shaft 120 . The protrusion 71 on the relay body 70 cooperates with the stopper 81 on the rotating body 80 , and thus drives the rotating body 80 to rotate.

Please continue to refer to FIG. 2 and FIG. 3 , the hinge body 100 includes a rotating cam 60 , and a sliding cam 50 is disposed under the rotating cam 60 . The sliding cam 50 is covered with a housing 3 , and the sliding cam 50 can slide relative to the housing 3 . A compression spring 4 against the bottom of the sliding cam 50 is also housed in the housing 3 . A middle shaft 11 passes through the rotating cam 60 , the sliding cam 50 and the pressure spring 4 . The end of the central shaft 11 is provided with an annular groove 111 , and a retaining spring 1 is clamped in the annular groove 111 . The snap spring 1 limits a position-limiting pressure block 2 to the lower end of the housing 3 .

Please refer to FIG. 9 , the upper part of the rotating cam 60 is provided with a connecting block 62 in the shape of a cuboid with arcuate surfaces on both ends, the lower part is provided with a push part 61 , and the rotating cam 60 is also provided with a rotating shaft hole 63 penetrating up and down.

Please refer to FIG. 10 , the upper end surface of the sliding cam 50 has a circumferential sliding cam curved surface 51 , and the sliding cam curved surface 51 has an ascending curved surface and a descending curved surface.

Referring to FIG. 2 , FIG. 9 and FIG. 10 , the central shaft 11 passes through the shaft hole 63 of the rotating cam 60 . The push portion 61 of the rotating cam 60 abuts against the sliding cam curved surface 51 of the sliding cam 50 .

Please refer to FIG. 2 , FIG. 8 and FIG. 9 , the coupling block 62 on the rotating cam 60 is inserted into the coupling groove 74 on the intermediate body 70 to cooperate with each other to transmit torque. The connection mode between the rotating cam 60 and the intermediate body 70 belongs to a kind of relatively fixed connection in the circumferential direction. The so-called circumferential fixed connection means that the two connected parts do not rotate relative to each other, but can slide relative to each other in the axial direction, such as spline connection.

When the hinge is in use, the casing 3 and the fixed body 130 should be fixed on one foldable part of the foldable electronic product, and the rotating cam 60 should be fixed on the other foldable part of the foldable electronic product.

As mentioned above, when the electronic product using the hinge of the present invention is opened, the relay body 70 will rotate together with the rotating cam 60 due to the interaction between the coupling block 62 and the coupling groove 74, and the rotating body 80 will not rotate until the relay The protrusion 71 on the body 70 contacts one side of the stopper 81 on the rotating body 80 . At this moment, the rotating body 80 starts to rotate together with the intermediate body 70 and the fixed body 130 is fixed. Since the damping oil between the fixed body 130 and the rotating body 80 of the damper 200 has a viscous property, the damper 200 starts to exert a damping effect. If at this time the push portion 61 of the rotating cam 60 slides to the descending section curved surface of the sliding cam curved surface 51 of the sliding cam 50 and lets go, the electronic product is automatically opened by the rotation effect produced by the pressure spring 4 and the sliding cam curved surface 51 on the push portion 61, The damper 200 will restrict the tendency of the electronic product to open faster and faster and achieve a stable and slow opening state. In this state, the electronic product can produce almost no vibration when it is fully opened.

When the electronic product is folded, the relay body 70 also rotates together with the rotating cam 60 at the initial stage, but the swivel body 80 will not rotate. side. Until the bump 71 touches the other side of the block 81, the rotating body 80 starts to rotate together with the relay body 70. Since the damping oil between the fixed body 130 and the rotating body 80 of the damper 200 has viscous properties, the damping The device 200 begins to play a damping role. If at this moment the push portion 61 of the rotary cam 60 slides to the descending section curved surface of the sliding cam curved surface 51 of the sliding cam 50 (the ascending section curved surface is opposite to the descending section curved surface, which is relevant to the direction of rotation of the rotary cam 60) and let go and let the electronics The product is automatically folded by the rotation effect of the pressure spring 4 and the sliding cam surface 51 on the push part 61, and the damper 200 will restrict the trend of the electronic product's folding speed getting faster and faster and achieve a stable and slow folding state. In this state, when the electronic product is fully folded, there is almost no vibration.

Therefore, the hinge device of the utility model can better protect the electronic product, make the electronic product more comfortable to use and avoid falling from the hand.

Claims (7)

1. pivot device, comprise a pivot device main body, this pivot device main body comprises a rotating cam, a sliding cam and a pressing spring, the rotating cam bottom has the pushed section, the sliding cam upper-end surface has a circumferential sliding cam curved surface, sliding cam curved surface has ascent stage curved surface and descending branch curved surface, and the pushed section of rotating cam is resisted against on this cunning cam curved surface, and an end of pressing spring is resisted against on the sliding cam; It is characterized in that: be combined with a damper with rotating cam, this damper comprises that the certain body and that cooperatively interacts turns, decide body and turn between be closed with damping oil.

2. pivot device as claimed in claim 1 is characterized in that: described damper comprises also and the relaying body of turning and cooperating that this relaying body connects with the circumferential relative fixed of rotating cam; Described turning is provided with a block, and the relaying body is provided with a projection.

3. pivot device as claimed in claim 2 is characterized in that: described rotating cam top is provided with coupling block, and described relaying body is provided with connection slot, and coupling block is inserted in the connection slot.

4. pivot device as claimed in claim 2, it is characterized in that: describedly decide body and comprise a cylinder section, the upper end of cylinder section is provided with a top, the tube middle top is provided with an axis hole, the tube top is projecting ring section outside being raised with downwards near the cylinder section place, and the tube top is in being raised with the convex ring portion downwards near the place, axle hole; Describedly turn whole cylindrically, which is provided with rotary shaft hole, its top raises up and decides the lug boss that the space adapts between the convex ring portion and outer projecting ring section on the body, and the outer edge place, border, top that turns is recessed to form interior circular rabbet downwards; Be provided with inner seal ring between the interior circular rabbet of deciding the outer projecting ring section of body and turning; In the axis hole of deciding body and the rotary shaft hole of turning, be installed with a damping axle; The tube top upper surface of deciding body is recessed to form inner annular recess downwards in the border of axis hole, and an exterior seal ring is located at this inner annular recess place and is placed on the damping axle.

5. pivot device as claimed in claim 4 is characterized in that: the block on described the turning is the fan annular, and the projection on the described relaying body is the fan annular; Described relaying body integral body is cylindrical, which is provided with central axis hole, and described damping axle passes from this central axis hole.

6. pivot device as claimed in claim 4 is characterized in that: described damping axle lower end protrudes out a convex edge to the border, and the bottom of the central axis hole of described relaying body has and corresponding convex edge, this convex edge groove; The upper end of damping axle is provided with a draw-in groove, and this draw-in groove place is arranged with a snap ring.

7. pivot device as claimed in claim 1 is characterized in that: describedly decide body and be protruding with anti-switch block.

Images