CN102109004B - Wrapped hub - Google Patents

Abstract

The invention relates to a coated pivot device, which comprises a mandrel and a coating piece, wherein the coating piece is sleeved on a shaft rod of the mandrel, the shaft rod is provided with a tangent plane, the coating piece is provided with an axial opening and forms a plane, and the width of the plane is smaller than that of the tangent plane of the shaft rod, so that the plane is not contacted with the tangent plane. The coating piece enables the hinge to have the effect of light opening and heavy closing, when the screen is opened, the plane of the coating piece rotates to the range of the tangent plane of the mandrel, and the torsion is small; when the screen is opened to the rear, the plane of the coating piece is contacted with the arc surface of the shaft lever to increase the interference amount, so that the torque is increased, and the screen can still be supported and cannot fall down when being opened to the rear.

Description

Wrapped hub

technical field

The invention relates to a hinge device, especially a covered hinge device, which is suitable for a clamshell electronic device.

Background technique

Generally, a hinge for flip-type electronic products is installed between the screen and the body, so that the screen can be opened or closed relative to the body. The wrap-around hinge usually has a sleeve with an actuated opening and closing opening sleeved on the pivot to provide the function of rotating and opening. The known structure is shown in the utility model patent "rotating shaft stabilization structure of a single-wrap shaft sleeve" of Taiwan Publication No. M315362. The rotating shaft is used for the connection between the host and the display. At different angles, the single-pack sleeve has a fastening portion, and the fastening portion has an actuation opening and closing opening. When the display moves forward relative to the host, the actuation opening and closing opening is larger than normal. And when this display is reversed relative to this host closing action, this actuating opening and closing mouth is smaller than normal time, causes this display to be able to realize the function of opening and closing light relative to this host opening and closing action.

Due to the different forward and reverse torques of the covered hinge, it has the characteristics of loosening and closing, so that the hinge has the function of opening light and closing heavy, allowing users to easily open the screen with less force, and when the screen is closed, By actuating the opening and closing opening is smaller than normal, the torque is increased, which can prevent the screen from automatically falling and hitting the body due to its own weight. However, due to the light opening function, when the screen is opened to the rear about 135-150 degrees, the screen cannot be supported and the screen will fall down, causing inconvenience in use, or product impact damage.

Therefore, the problem to be solved by the present invention is the problem that the screen is opened to the rear and cannot be supported due to insufficient torsional force and is easy to fall down.

Contents of the invention

The main purpose of the present invention is to provide a covered hinge, which has the effect of opening light and closing heavy, and when it is opened to the rear, it will increase the torque to support the screen, avoiding the impact damage and impact caused by the screen falling backwards. Extend product life and improve ease of use.

In order to achieve the above purpose, the technical solutions adopted by the covered hinge device of the present invention include:

a mandrel having a shaft with a facet;

The covering part is sheathed on the shaft, which is provided with an axial opening and forms a plane, the distance from the plane to the centerline of the covering part is smaller than the inner radius of the covering part, and the width of the plane is smaller than the width of the cut surface of the shaft rod , so that the plane does not touch the tangent plane.

The cladding part makes the hinge produce the effect of light switch and heavy switch. When it is opened, the plane of the covering part rotates within the tangential range of the shaft, and does not touch the arc surface of the shaft. At this time, the torque is small, so the overall opening has a light effect, and the screen can be easily opened with one hand. . When the screen is opened to about 90-180 degrees to the rear, the plane rotation of the covering part contacts the arc surface of the shaft, which increases the amount of interference, thereby increasing the torque, so that the screen can be supported when it is opened to the rear, without fall down. When it is closed, the torsion force is increased through the cover to prevent the screen from automatically falling and hitting the body.

Another technical solution adopted by the covered hinge of the present invention includes:

The mandrel has a shaft, the shaft is provided with a cut surface, and the shaft is formed with the cut surface and an arc surface;

The covering part is in the shape of a circular tube, sleeved on the shaft and provided with an axial opening;

Wherein, when the hinge is turned and opened, it has the angle range of the opening of the front section and the angle range of the opening of the rear section. The elastic expansion of the covering is small, so that a small torsion force is generated. When the opening angle range of the rear section is opened, the opening of the covering member rotates to the range of the arc surface of the shaft, and the arc surface is in contact with both sides of the opening. At this time, the elastic expansion of the covering member is relatively small. large, resulting in greater torque. Therefore, when the screen is opened to the angle range of the opening of the rear section, the torsion force will increase, and the screen can be supported without falling down.

Description of drawings

Fig. 1 is an exploded view of the first embodiment of the present invention.

Fig. 2 is an assembled perspective view of the first embodiment of the present invention.

Fig. 3 is an exploded bottom view of parts of the first embodiment of the present invention.

Fig. 4 is an A-A sectional view of Fig. 2 of the present invention.

Fig. 5 is a schematic diagram of the present invention opened to 90 degrees.

Fig. 6 is a schematic diagram of the present invention opened to 135 degrees.

Fig. 7 is an exploded view of the second embodiment of the present invention.

Fig. 8 is a schematic diagram of the second embodiment of the present invention within the angle range of the opening of the front section.

Fig. 9 is a schematic diagram of the second embodiment of the present invention within the angle range of the opening of the rear section.

List of Reference Signs

Detailed ways

Please refer to FIG. 1-FIG. 4, which are the exploded view of the parts, the three-dimensional assembled view, the exploded bottom view of the parts and the A-A sectional view of the first embodiment of the present invention. The covered hinge device of the present invention includes a mandrel 1 and a cladding member 2, the mandrel 1 has a shaft 11, the shaft 11 is provided with a cut surface 110, and is non-circular, and one end of the mandrel 1 is provided with a joint 12, Used to combine and fix the body of the electronic device. The covering member 2 is sheathed on the shaft 11 and has an axial opening 21 to make it elastically expandable in the radial direction. The cladding 2 forms a plane 22, the distance from the plane 22 to the centerline of the cladding 2 is smaller than the inner radius of the cladding 2, and the width of the plane 22 is smaller than the width of the cut surface 110 of the shaft 11, so that the plane 22 does not contact the cut surface 110. The covering part 2 is extended with a fixing piece 23, and the fixing piece 23 is provided with a plurality of fixing holes 24 for fixing with the screen of the electronic device.

Please refer to Fig. 4-Fig. 5, Fig. 4 is a schematic diagram of the closed state of the hinge, and Fig. 5 is a schematic diagram of the state of the pivot opened by 90 degrees. When the screen is turned on, the cover 2 rotates in the opposite direction of the opening 21, and the opening 21 is larger than normal, and the plane 22 of the cover 2 rotates within the range of the tangent plane 110 of the shaft 11, and does not meet the arc of the shaft 11. Surface contact, at this time the torque is small and easy to open, with the effect of light opening. Since the width of the plane 22 is smaller than the width of the cut surface 110 , the plane 22 of the covering part 2 rotates to the range of the cut surface 110 and will not fit with the cut surface 110 to form a lock.

After opening to about 135 degrees, as shown in Figure 6, the plane 22 of the covering part 2 is in contact with the tangent surface 110 corner and the arc surface of the shaft 11, because the distance from the plane 22 to the center line of the covering part 2 is less than that of the covering part 2. The inner radius of the part 2 interferes with the shaft 11, so the covering part 2 will be stretched by the corner of the cut surface 110 and the arc surface to tighten the shaft 11, thereby increasing the torque to support the screen and prevent the screen from falling backwards. The angle at which the plane 22 of the covering member 2 interferes with the shaft 11 depends on the application requirements, and is not limited to the above-mentioned angles. The practicable range is about 90°-180° to increase the torque of the hinge. When it is reversely closed, the opening 21 of the covering part 2 becomes smaller and the torque increases, which can prevent the screen from automatically falling and hitting the body, thereby achieving the effect of closing the weight.

Please refer to FIG. 7-FIG. 8, which are the exploded view of the parts and the schematic diagram of the opening angle range of the front section of the second embodiment of the present invention. In this embodiment, the flat surface 22 of the covering part 2 of the first embodiment is removed, that is, the covering part 2 is in the shape of a circular tube without a flat surface, and the shaft 11 of the mandrel 1 is still provided with a cut surface 110, that is, the shaft rod 11 is formed with a cut surface 110 is in interference fit with the arc surface 111 , and the covering part 2 and the shaft 11 .

Here, when the hinge is turned and opened, there is an angle range of the front section opening and a rear section opening angle range. When the front section is opening the angle range, the opening 21 of the covering member 2 rotates to the range of the tangent plane 110 of the shaft 11 . In the angle range of the opening of the rear section, the opening 21 of the covering member 2 is rotated to the range of the arc surface 111 of the shaft 11 and the arc surface 111 is in contact with both sides of the opening 21 .

As shown in FIG. 8 , when the hinge is within the angle range A of the opening of the front section, for example, 0°-90°, the opening 21 of the covering member 2 is rotated to be within the range of the cut plane 110 of the shaft 11 . As shown in Figure 9, when the hinge is in the angle range B of the opening of the rear section, for example, 90°-180°, the opening 21 of the covering member 2 rotates to the range of the arc surface 111 of the shaft 11, and the arc surface 111 completely blocks the opening 21 .

When within the angle range A of the opening of the front section, since both sides of the opening 21 of the covering part 2 are not completely in contact with the arc surface 111 of the shaft 11, one side or both sides of the opening 21 are stretched due to no shaft 11. , the amount of elastic expansion of the covering member 2 is small, thus generating a small torsional force. When it is within the angle range B of the opening of the rear section, since both sides of the opening 21 of the second covering member 2 are in contact with the arc surface 111 of the shaft rod 11, the shaft rod 11 will fully stretch the covering member 2, thus At this time, the elastic expansion of the covering part 2 is relatively large, resulting in relatively large torsional force. Therefore, when the screen is opened to the angle range of the opening of the rear section, the torsion force will increase, and the screen can be supported without falling down. The above-mentioned angle range of the opening of the front section and the opening angle range of the rear section are determined according to the application requirements, and are not limited to the above-mentioned angles.

Although the present invention discloses preferred specific embodiments in order to achieve the above object, these embodiments are not intended to limit the structural features of the present invention. Those of ordinary skill in the art should know that under the technical spirit of the present invention, any Variations or modifications that are readily conceivable are possible and covered by the claims of the present application.

Claims (3)

1. A covered hub, comprising: a mandrel having a shaft with a facet; The covering part is sleeved on the shaft, and it is provided with an axial opening and a plane is formed, the width of the plane is smaller than the width of the cut surface of the shaft, so that the plane does not contact the cut surface; the plane of the covering part is to The distance between the centerline of the covering part is smaller than the inner radius of the covering part to prevent the screen from falling down when it is opened to the opening angle of the rear section. 2. The covered hinge device according to claim 1, wherein a fixing piece is extended from the covering part, and a plurality of fixing holes are formed on the fixing piece. 3. The covered hinge device as claimed in claim 1, wherein one end of the mandrel is provided with a joint.

Images