Portable Electronic Device

• US 20140192471A1
• Filed: 07/12/2013
• Published: 07/10/2014
• Est. Priority Date: 01/08/2013
• Status: Active Grant

• Current Assignee: Quanta Computer
• Original Assignee: Quanta Computer
• Inventors: Chang, Jung-Wen, Chang, Chun-Sen, Hsu, Chuan-Yu
• Granted Patent: US 9,030,813 B2
• Time in Patent Office: Days
• US Class Current: 361/679.26
• CPC Class Codes: G06F 1/162 changing, e.g. reversing, the face orientation of the screen with a two degrees of freedom mechanism, e.g. for folding into tablet PC like position or orienting towards the direction opposite to the user to show to a second user
• CPC Class Codes: G06F 1/1633 Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
• CPC Class Codes: G06F 1/1681 Details related solely to hinges hinge details related to the transmission of signals or power are classified in G06F1/1683

Abstract

A portable electronic device includes a tablet PC, a base panel and two supports. Two opposite ends of each support are respectively pivoted to the tablet PC and the base panel through a first pivotal portion and a second pivotal portion. The second pivotal portion includes a shaft rod fastened on one end of the support, a retractable spring, a fixed cam fastened on the base panel, and a rotary cam. The retractable spring, the fixed cam and the rotary cam are sleeved on the shaft rod. The fixed cam includes three first peaks, and a first cave is formed between any two of the first peaks. The rotary cam is rotated along the supports, abutted against the fixed cam and the retractable spring. The rotary cam includes three second peaks, and a second cave is formed between any two of the second peaks.

Claims

1. A portable electronic device, comprising:

a tablet PC comprising a touch screen;

a base panel;

two supports, each of the supports comprises a first end and a second end which are oppositely arranged with each other;

two first pivotal portions in which the first ends are respectively pivoted on two opposite lateral surfaces of the tablet PC through the first pivotal portions;

two second pivotal portions in which the second ends are respectively pivoted on two opposite lateral surfaces of the base panel through the second pivotal portions, and each of the second pivotal portions comprises;

a shaft rod having one end thereof fastened on the second end of one of the supports;

a retractable spring sleeved on the shaft rod;

a three-peak fixed cam sleeved on the shaft rod, fastened on the base panel, wherein the three-peak fixed cam comprises three first peaks spaced with equal intervals, and a first cave is formed between every two of the first peaks; and

a three-peak rotary cam sleeved on the shaft rod, rotated along the supports, and two ends of the three-peak rotary cam being respectively abutted against the three-peak fixed cam and the retractable spring, wherein the three-peak rotary cam comprises three second peaks spaced with equal intervals, and a second cave is formed between every two of the second peaks,

wherein when the tablet PC is stacked on the base panel, the second peaks respectively abuts against the first peaks to compress the retractable spring,

when the retractable spring pushes the second peaks to be respectively received into and abutted against the first caves, the tablet PC stands on the base panel, and an included angle being in a range of 50 to 60 degrees is formed between the base panel and each of the supports.

2. The portable electronic device according to claim 1, wherein the base panel comprises:

two guide slots oppositely formed on one surface of the base panel, each of the guide slots is formed with a slot opening which is narrower than the guide slot.

3. The portable electronic device according to claim 2, further comprising:

two connection members, each of the connection members comprising a third end and a fourth end which are oppositely arranged with each other,

wherein the third ends thereof are respectively protruded out from one of the slot openings to respectively pivot with the tablet PC, the fourth ends thereof are respectively slidably disposed in the guide slots.

4. The portable electronic device according to claim 3, wherein each of the connection members is formed in a U shape, and each of the connection members comprises:

a rod member disposed in the slot opening of the guide slot;

a top transversal shaft disposed at one end of the rod member, disposed outside the slot opening, extended towards one direction, and pivoted at one side of the tablet PC; and

a bottom transversal shaft disposed at the other end of the rod member, extended towards the same direction to which the top transversal shaft being extended, limited in the guide slot for reciprocally sliding between two opposite distal ends of the guide slot.

5. The portable electronic device according to claim 4, wherein the tablet PC comprises:

an external housing formed with an accommodation space and a slit communicated with the accommodation space, wherein the touch screen is received in the accommodation space; and

a fix housing fixed in the accommodation space, wherein the top transversal shaft is pivoted on the fix housing, the rod member is protruded outwards from the slit.

6. The portable electronic device according to claim 3, wherein the base panel further comprises:

two protruding bars oppositely disposed on the surface of the base panel; and

an input interface configured on the surface of the base panel and arranged between the guide slots,

wherein when the tablet PC stands on the base panel, one side of the tablet PC is in physical contact with the two protruding bars such that a gap between the tablet PC and the input interface is formed.

7. The portable electronic device according to claim 6, wherein the input interface is a keyboard, a touch screen, a touch plate or a drawing plate.

8. The portable electronic device according to claim 3, wherein the base panel further comprises:

at least one position-limiting recess transversally formed on a surface of the base panel,

wherein when the tablet PC stands on the base panel, the tablet PC is received in the position-limiting recess.

9. The portable electronic device according to claim 8, wherein the tablet PC further comprises:

at least one first magnetic member disposed at one side of the tablet PC; and

the base panel comprises at least one second magnetic member, the at least one second magnetic member is disposed in the position-limiting recess and correspondingly aligned to the first magnetic member,

wherein when the tablet PC stands on the base panel, the tablet PC is limited in the position-limiting recess because the first magnetic member and the second magnetic member are magnetically attracted with each other.

10. The portable electronic device according to claim 9, wherein the tablet PC further comprises:

at least one third magnetic member disposed at one side of the tablet PC; and

the base panel comprises at least one fourth magnetic member, the at least one fourth magnetic member is disposed at one side of the base panel and correspondingly aligned to the third magnetic member,

wherein when the tablet PC stacks on the base panel, the tablet PC is limited on the base panel because the third magnetic member and the fourth magnetic member are magnetically attracted with each other.

11. The portable electronic device according to claim 10, wherein at least one of the first magnetic member, the second magnetic member, the third magnetic member and the fourth magnetic member is an electromagnet capable of being switched off its magnetic force.

12. The portable electronic device according to claim 8, wherein the tablet PC further comprises:

at least one first electric connector disposed on one surface of the tablet PC opposite to the touch screen;

the base panel comprises at least one second electric connector, the at least one second electric connector is disposed in the position-limiting recess,

wherein when the tablet PC stands on the base panel, the first electric connector is connected to the second electric connector.

13. The portable electronic device according to claim 8, wherein a first vertical differentiation is formed between a first lowest point defined on an inner surface of the position-limiting recess and the surface of the base panel where the position-limiting recess is formed,

a second vertical differentiation is formed between a second lowest point defined on an inner surface of the guide slot being in contact with the bottom transversal shaft and corresponding to the first lowest point, and a highest point defined on the inner surface of the guide slot being in contact with the bottom transversal shaft and not corresponding to a highest point of the position-limiting recess,

wherein the first vertical differentiation is greater than the second vertical differentiation.