CN-224229080-U - Cam torsion module in portable electronic product hinge

CN224229080UCN 224229080 UCN224229080 UCN 224229080UCN-224229080-U

Abstract

The utility model provides a cam torsion module in a portable electronic product hinge, which is provided with a first cam pair, a second cam pair and a compression spring, wherein the first cam pair and the second cam pair are respectively positioned outside a first side and outside a second side of a fixed seat, the compression spring, the first cam pair, the fixed seat and the second cam pair are positioned between the first side and the second side limit, the first cam pair and the second cam pair are tightly propped by the compression spring, two side surfaces of the fixed seat are tightly propped against adjacent rotating parts, one cam in the second cam pair adopts an equivalent cam, and two pairs of internal cam pairs and internal compression springs are arranged inside the equivalent cam. According to the utility model, more cam pairs can be arranged on one side of the fixed seat, the balance of axial force values on two sides of the fixed seat can be considered, meanwhile, the friction surfaces can be provided on two sides of the fixed seat, under the condition that the number of the cam pairs is equal, the axial space requirement is low, the friction surfaces are provided on two sides of the fixed seat, and the balance of the axial force is improved.

Inventors

ZHANG JINGJIANG
YE KE
YAN YINLIANG

Assignees

杭州安费诺飞凤通信部品有限公司

Dates

Publication Date: 20260512
Application Date: 20250427

Claims (10)

1. The cam torsion module in the portable electronic product hinge comprises a fixed seat and a shaft, wherein the fixed seat is provided with a shaft hole, and the shaft penetrates through the shaft hole, and the portable electronic product hinge is characterized in that the cam torsion module is provided with a first cam pair and a second cam pair which are respectively positioned outside a first side and a second side of the fixed seat and sleeved on the shaft, the cam torsion module is provided with a compression spring, a first side limit and a second side limit, the compression spring, the first cam pair, the fixed seat and the second cam pair are positioned between the first side limit and the second side limit, the first cam pair and the second cam pair are propped up through the compression spring, and two sides of the fixed seat are propped up with adjacent rotating parts sleeved on the shaft; The compression springs are located outside the first side of the fixed seat, one cam in the second cam pair adopts an equivalent cam, two pairs of internal cam pairs are arranged in the equivalent cam, an equivalent cam internal compression spring is arranged between the two pairs of internal cam pairs, the second side of the fixed seat and the second side are supported for limiting, the internal cam pairs located at two ends of the equivalent cam internal compression spring are tightly propped, and the compression directions of the two pairs of internal cam pairs to the equivalent cam internal compression springs are opposite.
2. The cam torque module of claim 1, wherein the two pairs of internal cams synchronize the control of the change in compression of the equivalent cam internal compression springs, and wherein the two pairs of internal cams equalize the compression of the equivalent cam internal compression springs.
3. The cam torque module of claim 1, wherein the cam pair is comprised of a movable cam rotatable relative to the fixed base and a stationary cam non-rotatable relative to the fixed base.
4. A cam torque module in a portable electronic product hinge as recited in claim 3, wherein the connecting arms in the hinge are arranged to move synchronously with the moving cam, and wherein each connecting arm is connected to the housing of the portable electronic product hinge on the side thereof.
5. A cam torque module in a portable electronic product hinge as recited in claim 3, wherein the first cam pair, the movable cam is located on the side of the fixed base, the cam of the second cam pair cooperating with the equivalent cam is a stationary cam, and the equivalent cam is located on the side of the fixed base, the movable cam is located on the inner cam pair of the fixed base.
6. The cam torque module in a portable electronic product hinge as recited in claim 1, wherein the equivalent cam is centered on the inner cam away from the fixed base, and a cam surface cooperating with the equivalent cam is provided on a back surface of the cam away from the fixed base.
7. The cam torque module of claim 1, wherein the cam away from the fixed base is a movable cam rotatable relative to the fixed base, and the cam engaged with the equivalent cam is a stationary cam non-rotatable relative to the fixed base.
8. The cam torque module of claim 1, wherein the first side stop and the second side stop are respectively sleeved on the shaft.
9. The cam torque module in a portable electronic product hinge of claim 1, wherein the portable electronic product is provided with a support structure for an end of the shaft positioned outside the second side of the holder.
10. A cam torque module in a portable electronic product hinge according to claim 1, characterized in that the hinge is a biaxial hinge, two sets of cam torque modules according to any one of claims 1-9 are provided, and cams on two shafts which cannot rotate relative to the shafts are correspondingly connected to each other.

Description

Cam torsion module in portable electronic product hinge Technical Field The present utility model relates to cam torque modules in hinges for portable electronic products, such as cell phones, notebook computers, and the like, and also includes accessories attached to such products, such as brackets or other functional devices. Background For the hinge of the portable electronic product, not only a connection function such as connecting two housings of the portable electronic product to each other rotatably, and movably connecting one functional device to the main body of the portable electronic product, but also a function such as a rotation resistance, a locking force in a stop position, and the like are provided. In general, increasing the number of cam pairs is a very effective solution in order to increase the rotational resistance, the force value of the locking force. However, the conventional scheme can only be solved by increasing the number of the fixing seats, and a pair of cams and a pair of friction surfaces are respectively arranged on two sides of the fixing seats, but the occupation of the axial space due to the increase of the number of the fixing seats is larger. If the fixing seat is not added, more pairs of cams are added on one side close to the structural main body, the output phase difference of the springs on the left side and the right side of the fixing seat in the axial direction is too large to cause long-term use, the reliability of the structure is still influenced, and in order to reduce the influence as little as possible, the friction surface on one side needs to be sacrificed. Disclosure of utility model The utility model aims to provide a cam torsion module in a portable electronic product hinge, which obtains better balance on the occupation of axial space, the number of cam groups, the number of friction faces and the axial force on two sides of a fixed seat. For this purpose, the utility model adopts the following technical scheme: The cam torsion module in the portable electronic product hinge comprises a fixed seat and a shaft, wherein the fixed seat is provided with a shaft hole, and the shaft penetrates through the shaft hole, and the portable electronic product hinge is characterized in that the cam torsion module is provided with a first cam pair and a second cam pair which are respectively positioned outside a first side and a second side of the fixed seat and sleeved on the shaft, the cam torsion module is provided with a compression spring, a first side limit and a second side limit, the compression spring, the first cam pair, the fixed seat and the second cam pair are positioned between the first side limit and the second side limit, the first cam pair and the second cam pair are propped up through the compression spring, and two sides of the fixed seat are propped up with adjacent rotating parts sleeved on the shaft; The compression springs are located outside the first side of the fixed seat, one cam in the second cam pair adopts an equivalent cam, two pairs of internal cam pairs are arranged in the equivalent cam, an equivalent cam internal compression spring is arranged between the two pairs of internal cam pairs, the second side of the fixed seat and the second side are supported for limiting, the internal cam pairs located at two ends of the equivalent cam internal compression spring are tightly propped, and the compression directions of the two pairs of internal cam pairs to the equivalent cam internal compression springs are opposite. On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes or use the further technical schemes in combination: The two pairs of internal cams synchronize the control of the variation of the compression amount of the internal compression springs of the equivalent cams, and the two pairs of internal cams are consistent in the compression amount of the internal compression springs of the equivalent cams. The cam pair consists of a movable cam which can rotate relative to the fixed seat and a static cam which can not rotate relative to the fixed seat. The connecting arms in the hinge are arranged together with the movable cam to move synchronously, and each connecting arm is connected to the housing of the portable electronic product hinge on the side of the connecting arm. The first cam pair, the movable cam is close to one side of the fixed seat, the cam matched with the equivalent cam in the second cam pair is a static cam, and the equivalent cam is close to one side of the fixed seat in the inner cam pair close to the fixed seat. In the equivalent cam, the inner cam far away from the fixed seat is centered, and the back surface of the cam far away from the fixed seat is provided with a cam surface matched with the equivalent cam. In the equivalent cams, the inner cams far away from the fixed seat are centered, the cams far away from the fixed seat are movable c