Portable electronic device

Abstract

A portable electronic device includes a first body, a second body, and a hinge mechanism. The second body is connected to the first body by the hinge mechanism, and the hinge mechanism has a reference axis located at the first body and a rotation axis located at a lower edge of the second body. When the second body rotates relative to the first body, the rotation axis slides relative to the reference axis along an arcuate trajectory to increase or decrease a distance between the rotation axis and the reference axis, and to increase or decrease a distance between the lower edge of the second body and a rear side of the first body.

Description

Technical Field

[0001] This invention relates to an electronic device, and more particularly to a portable electronic device. Background Technology

[0002] As the computing power of laptops continues to improve, the heat generated by their internal electronic components (such as central processing units, graphics processing units, or other electronic components) also increases. If the heat cannot be dissipated to the outside quickly, the performance of the laptop is prone to decline due to overheating.

[0003] Generally, a laptop consists of a first unit and a second unit pivotally connected to each other. The first unit handles logical operations and data access, while the second unit displays images. Furthermore, the heat source (such as the central processing unit, graphics processor, or other electronic components) is mostly located inside the first unit, which has ventilation openings at the rear to allow hot air to escape from its interior. Because the lower edge of the second unit is pivotally connected to the rear of the first unit, when the second unit rotates and unfolds relative to the first unit, its lower edge moves closer to the rear of the first unit, blocking the path of hot air escape and resulting in poor heat dissipation. Summary of the Invention

[0004] This invention relates to a portable electronic device with excellent heat dissipation efficiency.

[0005] According to an embodiment of the present invention, a portable electronic device includes a first body, a second body, and a hinge mechanism. The hinge mechanism includes a first shaft fixed to the first body, a first gear fixed to the first shaft, a first gear set meshing with the first gear, a rack rotatably connected to the first shaft, a bracket slidably connected to the rack, a second shaft fixed to the lower edge of the second body and rotatably connected to the bracket, a second gear fixed to the second shaft, and a second gear set meshing with the rack. The bracket includes a rack portion parallel to the rack, and the first gear set meshes with the rack portion. When the second shaft rotates relative to the first body with the second body, the second gear drives the second gear set to rotate, and the second gear set slides relative to the rack, causing the second shaft to slide relative to the first shaft along an arcuate trajectory, thereby increasing or decreasing the distance between the second shaft and the first shaft, and increasing or decreasing the distance between the lower edge of the second body and the rear side of the first body.

[0006] According to another embodiment of the present invention, a portable electronic device includes a first body, a second body, and a hinge mechanism. The second body is connected to the first body via the hinge mechanism, and the hinge mechanism has a reference axis located on the first body and a rotation axis located on the lower edge of the second body. When the second body rotates relative to the first body, the rotation slides along an arcuate trajectory relative to the reference axis to increase or decrease the distance between the rotation axis and the reference axis, and to increase or decrease the distance between the lower edge of the second body and the rear side of the first body.

[0007] Based on the above, while the second body rotates relative to the first body, it also slides relative to the first body to adjust the distance between the lower edge of the second body and the rear side of the first body. Furthermore, when the second body rotates and unfolds relative to the first body via the hinge mechanism, the lower edge of the second body slides away from the rear side of the first body, preventing the lower edge of the second body from blocking the heat dissipation path located at the rear side of the first body (i.e., the path for hot air inside the first body to escape), allowing hot air to be quickly discharged from the interior of the first body to the outside. Therefore, the portable electronic device of the present invention has excellent heat dissipation efficiency. Attached Figure Description

[0008] Figure 1A This is a partial side view of a portable electronic device in a closed state according to an embodiment of the present invention;

[0009] Figure 1B yes Figure 1A A partial side view of a portable electronic device in its unfolded state;

[0010] Figure 2A yes Figure 1A A partial cross-sectional schematic diagram of a portable electronic device;

[0011] Figure 2B yes Figure 1B A partial cross-sectional schematic diagram of a portable electronic device;

[0012] Figure 3A yes Figure 2A A schematic diagram of the hinge mechanism from other perspectives;

[0013] Figure 3B yes Figure 2B A schematic diagram of the hinge mechanism from another perspective. Detailed Implementation

[0014] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0015] Figure 1AThis is a partial side view of a portable electronic device in a closed state according to an embodiment of the present invention. Figure 1B yes Figure 1A A partial side view of the portable electronic device in its unfolded state. Please refer to... Figure 1A and Figure 1B In this embodiment, the portable electronic device 100 may be a laptop computer, and includes a first body 110, a second body 120, and a hinge mechanism 130. The first body 110 has capabilities such as logical operations and data access, while the second body 120 has image display capabilities. The second body 120 is connected to the first body 110 through the hinge mechanism 130, and the hinge mechanism 130 provides the second body 120 with degrees of freedom of rotation and sliding relative to the first body 110.

[0016] Furthermore, the hinge mechanism 130 has a reference axis 101 located on the first body 110 and a rotation axis 102 located on the lower edge 121 of the second body 120. When the second body 120 rotates relative to the first body 110, the rotation axis 102 rotates with the second body 120 relative to the reference axis 101 and slides relative to the reference axis 101 along an arc trajectory 103 to increase or decrease the distance between the rotation axis 102 and the reference axis 101, and to increase or decrease the distance between the lower edge 121 of the second body 120 and the rear side 111 of the first body 110.

[0017] exist Figure 1A In the closed state shown, the horizontal distance between the reference axis 101 and the rotation axis 102 is D1. Figure 1A The closed state shown is transformed to Figure 1B During the unfolding process shown, the rotation axis 102 slides away from the reference axis 101 along the arc trajectory 103, causing the horizontal distance between the reference axis 101 and the rotation axis 102 to increase from D1 to D2. On the other hand, in Figure 1A In the closed state shown, there is no vertical difference between the reference axis 101 and the rotation axis 102. Figure 1A The closed state shown is transformed to Figure 1B During the unfolding process shown, the rotation axis 102 slides away from the reference axis 101 along the arc trajectory 103 and sinks relative to the reference axis 101, resulting in a vertical drop H between the reference axis 101 and the rotation axis 102.

[0018] like Figure 1BAs shown, while the horizontal distance between the reference axis 101 and the rotation axis 102 increases from D1 to D2, the lower edge 121 of the second body 120 slides away from the rear side 111 of the first body 110 (i.e., increases the distance between the lower edge 121 of the second body 120 and the rear side 111 of the first body 110), to avoid the lower edge 121 of the second body 120 blocking the heat dissipation path located on the rear side 111 of the first body 110 (i.e., the path for the hot air inside the first body 110 to be discharged outward), so that the hot air can be quickly discharged from the inside of the first body 110 to the outside.

[0019] In contrast, in self Figure 1B The unfolded state shown has been changed to Figure 1A During the closed state process shown, the rotation axis 102 slides along the arc trajectory 103 closer to the reference axis 101, reducing the horizontal distance between the reference axis 101 and the rotation axis 102 from D2 to D1. In addition, the lower edge 121 of the second body 120 slides closer to the rear side 111 of the first body 110 (i.e., reducing the distance between the lower edge 121 of the second body 120 and the rear side 111 of the first body 110), and finally, the lower edge 121 of the second body 120 approaches the rear side 111 of the first body 110.

[0020] Figure 2A yes Figure 1A A partial cross-sectional schematic diagram of a portable electronic device. Figure 2B yes Figure 1B A partial cross-sectional schematic diagram of a portable electronic device. Figure 3A yes Figure 2A A schematic diagram of the hinge mechanism from another perspective. Figure 3B yes Figure 2B A schematic diagram of the hinge mechanism from another perspective. Please refer to... Figures 2A to 3B In this embodiment, the hinge mechanism 130 includes a first shaft 131, a first gear 132, a first gear set 133, a rack 134, a bracket 135, a second shaft 136, a second gear 137, and a second gear set 138. The first shaft 131 is fixed within the first body 110, and the second shaft 136 is fixed to the lower edge 121 of the second body 120. Furthermore, the first shaft 131 is parallel to the second shaft 136, with a reference axis 101 passing through the first shaft 131 and a rotation axis 102 passing through the second shaft 136. That is, the reference axis 101 is parallel to the rotation axis 102.

[0021] Please refer to Figures 2A to 3B The first gear 132 is fixed to the first shaft 131, therefore the first shaft 131 and the first gear 132 remain stationary within the first body 110. Figure 3A and Figure 3BAs shown, a first gear set 133 meshes with a first gear 132, wherein a rack 134 is rotatably connected to a first shaft 131, and a bracket 135 is slidably connected to the rack 134. Specifically, the bracket 135 includes a rack portion 135a parallel to the rack 134, and the first gear set 133 meshes with the rack portion 135a. On the other hand, a second shaft 136 is rotatably connected to the bracket 135, wherein a second gear 137 is fixed to the second shaft 136, and a second gear set 138 meshes with the second gear 137 and the rack 134.

[0022] When the second body 120 rotates and unfolds relative to the first body 110, the second shaft 136 and the second gear 137 rotate synchronously with the second body 120, and the second gear 137 drives the second gear set 138 to rotate, so that the second gear set 138 slides relative to the rack 134. During the sliding process of the second gear set 138 relative to the rack 134, the bracket 135, the second shaft 136, and the second gear 137 slide synchronously with the second gear set 138, and the second shaft 136 slides away from the first shaft 131, so that the horizontal distance between the second shaft 136 and the first shaft 131 increases from D1 to D2. In addition, the first gear set 133, the bracket 135, the second shaft 136, the second gear 137, and the second gear set 138 rotate with the rack 134 relative to the first shaft 131, and the second shaft 136 sinks relative to the first shaft 131.

[0023] Conversely, when the second body 120 rotates and closes relative to the first body 110, the second shaft 136 and the second gear 137 rotate synchronously with the second body 120, and the second gear 137 drives the second gear set 138 to rotate, so that the second gear set 138 slides relative to the rack 134. During the sliding process of the second gear set 138 relative to the rack 134, the bracket 135, the second shaft 136, and the second gear 137 slide synchronously with the second gear set 138, and the second shaft 136 slides closer to the first shaft 131, so that the horizontal distance between the second shaft 136 and the first shaft 131 is reduced from D2 to D1. In addition, the first gear set 133, the bracket 135, the second shaft 136, the second gear 137, and the second gear set 138 rotate with the rack 134 relative to the first shaft 131, and the second shaft 136 rises relative to the first shaft 131.

[0024] In other words, as the second body 120 rotates relative to 110, the second axis 136 has a sliding amount in both the horizontal and vertical directions to slide relative to the first axis 131 along the arc trajectory 103.

[0025] like Figure 3A and Figure 3BAs shown, during the sliding of the second shaft 136 relative to the first shaft 131, the bracket 135 slides synchronously with the second shaft 136 and relative to the rack 134, so as to drive the first gear set 133 to rotate through the rack portion 135a. In detail, the first gear set 133 includes a third gear 133a that meshes with the rack portion 135a of the bracket 135, a fourth gear 133b that meshes with the third gear 133a, a fifth gear 133c that is coaxial with the fourth gear 133b, a sixth gear 133d that meshes with the fifth gear 133c, a seventh gear 133e that is coaxial with the sixth gear 133d, an eighth gear 133f that meshes with the seventh gear 133e, and a ninth gear 133g that is coaxial with the eighth gear 133f, and the ninth gear 133g meshes with the first gear 132.

[0026] The second gear set 138 includes a tenth gear 138a meshing with the second gear 137 and an eleventh gear 138b meshing with the tenth gear 138a, with the eleventh gear 138b meshing with the rack 134. When the second gear 137 drives the tenth gear 138a to rotate, and the tenth gear 138a drives the eleventh gear 138b to rotate, the eleventh gear 138b slides relative to the rack 134, causing the bracket 135 to slide relative to the rack 134, so that the rack portion 135a drives the third gear 133a to rotate. Furthermore, the rotation direction of the third gear 133a is opposite to the rotation direction of the eleventh gear 138b.

[0027] For example, the bracket 135 includes two rack portions 135a symmetrically arranged on opposite sides of the rack 134, and the first gear set 133 includes two coaxially arranged third gears 133a. The two rack portions 135a respectively mesh with the two third gears 133a to provide sufficient driving force to the first gear set 133. Specifically, one third gear 133a meshes with the fourth gear 133b, while the other third gear 133a does not mesh with the fourth gear 133b, the fifth gear 133c, the sixth gear 133d, the seventh gear 133e, the eighth gear 133f, and the ninth gear 133g.

[0028] Please refer to Figures 2A to 3B The third gear 133a drives the fourth gear 133b, and the fourth gear 133b rotates synchronously with the fifth gear 133c. The fifth gear 133c drives the sixth gear 133d, and the sixth gear 133d rotates synchronously with the seventh gear 133e. The seventh gear 133e drives the eighth gear 133f, and the eighth gear 133f rotates synchronously with the ninth gear 133g. The first gear 132 remains stationary, and the ninth gear 133g rotates relative to the first gear 132, thereby causing the entire first gear set 133 to rotate.

[0029] Furthermore, the sixth gear 133d has a greater number of teeth than the fifth gear 133c, therefore its rotational speed is less than that of the fifth gear 133c, constituting the first stage of speed reduction. The sixth gear 133d and the seventh gear 133e are coaxially aligned, so the rotational speed of the sixth gear 133d is equal to that of the seventh gear 133e. The sixth gear 133d has a greater number of teeth than the seventh gear 133e, and the eighth gear 133f has a greater number of teeth than the seventh gear 133e, therefore its rotational speed is less than that of the seventh gear 133e, constituting the second stage of speed reduction.

[0030] The aforementioned two-stage deceleration design can overcome or compensate for the stroke difference between the rotation and lifting of the second shaft 136, so as to facilitate the smooth rotation and sliding of the second body 120 relative to the first body 110.

[0031] On the other hand, the eighth gear 133f and the ninth gear 133g are coaxially arranged, so the rotational speed of the eighth gear 133f is equal to the rotational speed of the ninth gear 133g. The number of teeth of the eighth gear 133f is greater than the number of teeth of the ninth gear 133g, and the number of teeth of the first gear 132 is greater than the number of teeth of the ninth gear 133g, so as to provide sufficient rotational speed for the ninth gear 133g.

[0032] like Figure 3A and Figure 3B As shown, the bracket 135 has grooves 135b arranged side-by-side with the rack portion 135a, and the rack 134 is disposed within the groove 135b. For example, the bracket 135 includes two rack portions 135a, symmetrically arranged on opposite sides of the groove 135b. Figure 2A and Figure 2B As shown, the first body 110 has a receiving space 112 for accommodating the hinge mechanism 130. As the second body 120 rotates relative to the first body 110, a portion of the hinge mechanism 130 moves out of the receiving space 112 or moves back into the receiving space 112.

[0033] In summary, while the second body rotates relative to the first body, it also slides relative to the first body to adjust the distance between the lower edge of the second body and the rear side of the first body. Furthermore, when the second body rotates and unfolds relative to the first body via the hinge mechanism, the lower edge of the second body slides away from the rear side of the first body, preventing the lower edge of the second body from blocking the heat dissipation path located at the rear side of the first body (i.e., the path for hot air inside the first body to escape), allowing hot air to be quickly discharged from the interior of the first body to the outside. Therefore, the portable electronic device of the present invention has excellent heat dissipation efficiency.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable electronic device, characterized in that, include: First body; Second body; as well as Hinge mechanism, including: The first shaft is fixed inside the first machine body; The first gear is fixed to the first shaft; The first gear set meshes with the first gear; A rack is rotatably connected to the first shaft; A bracket slidably connected to the rack, wherein the bracket includes rack portions arranged side-by-side with the rack, and the first gear set meshes with the rack portions; The second shaft is fixed to the lower edge of the second body and rotatably connected to the bracket; The second gear is fixed to the second shaft; and The second gear set meshes with the second gear and the rack. When the second shaft rotates with the second body relative to the first body, the second gear drives the second gear set to rotate, and the second gear set slides relative to the rack, so that the second shaft slides relative to the first shaft along an arc trajectory, thereby increasing or decreasing the distance between the second shaft and the first shaft, and increasing or decreasing the distance between the lower edge of the second body and the rear side of the first body.

2. The portable electronic device according to claim 1, characterized in that, The bracket slides synchronously with the second shaft, and the rack portion drives the first gear set to rotate.

3. The portable electronic device according to claim 1, characterized in that, The bracket has grooves arranged side by side with the rack portion, and the rack is disposed within the grooves.

4. The portable electronic device according to claim 1, characterized in that, The first gear set includes a third gear meshing with the rack portion of the bracket, a fourth gear meshing with the third gear, a fifth gear coaxial with the fourth gear, a sixth gear meshing with the fifth gear, a seventh gear coaxial with the sixth gear, an eighth gear meshing with the seventh gear, and a ninth gear coaxial with the eighth gear, wherein the ninth gear meshes with the first gear.

5. The portable electronic device according to claim 4, characterized in that, The second gear set includes a tenth gear that meshes with the second gear and an eleventh gear that meshes with the tenth gear, and the eleventh gear meshes with the rack.

6. The portable electronic device according to claim 5, characterized in that, The rotation direction of the third gear is opposite to that of the eleventh gear.

7. The portable electronic device according to claim 4, characterized in that, The number of teeth on the sixth gear is greater than the number of teeth on the seventh gear and the number of teeth on the fifth gear.

8. The portable electronic device according to claim 4, characterized in that, The number of teeth on the eighth gear is greater than the number of teeth on the ninth gear.

9. The portable electronic device according to claim 4, characterized in that, The sixth gear has more teeth than the seventh gear, the eighth gear has more teeth than the seventh gear, the eighth gear has more teeth than the ninth gear, and the first gear has more teeth than the ninth gear.

10. The portable electronic device according to claim 1, characterized in that, The first body has a receiving space for accommodating the hinge mechanism, and as the second body rotates relative to the first body, a portion of the hinge mechanism moves out of or back into the receiving space.

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