TWI439219B - Hinge mechanism - Google Patents

Description

Hinge structure

The present invention relates to a hinge structure, and more particularly to a hinge structure for an electronic device.

A hinge structure is often provided in an electronic device such as a notebook computer, a game machine, an e-book, or a mobile phone, so that the two portions of the pivotal connection can be relatively rotated. In order to realize the linkage of the two parts of the electronic device to each other, that is, when one part of the electronic device is rotated relative to the other part, the hinge structure of the two parts of the electronic device is pivoted to drive another part of the electronic device to rotate, and then Double the speed of opening and closing.

A common hinge structure that can realize linkage is realized by a four-cylinder spur gear that is sequentially engaged. However, when used for a period of time, due to the wear of the gears when meshing with each other, problems such as loosening of the mesh may occur, resulting in a decrease in transmission accuracy and an unsmooth transmission.

In view of the above, it is necessary to provide a hinge structure that can ensure better transmission accuracy and transmission stability after long-term use.

A hinge structure, comprising two pivots, two rotating shafts, two main gears respectively sleeved on the corresponding pivot shafts, corresponding to the secondary gears respectively sleeved on the two rotating shafts, the first connecting member, the second connecting member and the second Elastic parts. The main gear and the secondary gear are disposed between the first connecting member and the second connecting member, and the secondary gear is disposed between the main gear and meshed with the main gear. The main gear and the secondary gear are both bevel gears and the large diameter end of the main gear The large diameter ends of the secondary gears are sequentially oriented in opposite directions. The first connecting member and the second connecting member are sleeved on the pivot shaft and the rotating shaft, and the elastic member is abutted against the large diameter end of the secondary gear.

In the hinge structure, when the main gear meshes with the secondary gear for a period of time and wears, the elastic member pushing the secondary gear at the end of the secondary gear moves along the axial direction, so that the gears are always meshed without gaps. Guarantee high transmission accuracy and transmission stability.

The hinge structure of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIGS. 1 and 2 , the hinge structure 100 includes a shaft assembly 10 , a transmission assembly 30 , a first connecting member 50 , a second connecting member 70 , and a reinforcing member 90 . The transmission assembly 30 is disposed between the two-axis assembly 10, and the first connecting member 50, the second connecting member 70, and the reinforcing member 90 are sleeved on the shaft assembly 10. The two-axis assembly 10 has the same or similar structure.

The shaft assembly 10 includes a pivot shaft 11 and a main gear 13 sleeved on the pivot shaft 11, a cam 15, a cam follower 17, and a sleeve assembly 19.

The pivot shaft 11 includes a deformed shaft section 111, a first flange 113, a second flange 115, and a connecting portion 117. The first flange 113 and the second flange 115 are formed between the deformed shaft segment 111 and the connecting portion 117 and away from each other, and the connecting portion 117 is also a non-circular shaft section. The connecting portion 117 is used for fixing The pivoting piece is connected to the cover or body of the electronic device (not shown). The end of the deformed shaft segment 111 is provided with a thread (not shown).

The main gear 13 is provided with a non-circular center hole 131. In the present embodiment, the main gear 13 is a straight bevel gear, and of course, it may be a helical bevel gear.

The cam 15 includes a body 151 and an engaging portion 153 formed at an adjacent edge of the body 151. A circular shaft hole 1511 is defined in the body 151, and a first protrusion 1513 and a second protrusion 1515 are formed away from one side of the engaging portion 153. The first protrusion 1513 is adjacent to the edge of the shaft hole 1511, and the second protrusion 1515 is adjacent to the edge of the body 151 and the lengths of the two extend in the circumferential direction are different. Of course, the cam 15 can also form a number of protrusions of one or more than two.

Referring to FIG. 3 together, the cam follower 17 defines a non-circular sleeve hole 171 and a recess 173, wherein the number of the recesses 173 is two, and each recess 173 extends from the edge of the sleeve hole 171 to The edge of the cam follower 17 is connected by two grooves having different widths so as to accommodate the first protrusion 1513 or the second protrusion 1515.

The bushing assembly 19 includes an elastic member 191, a friction plate 193, and a fastener 195. In the present embodiment, the elastic members 191 are disc-shaped elastic pieces arranged in groups in opposite directions, and the fasteners 195 are nuts that are threadedly engaged with the ends of the deformed shaft segments 111 of the pivot shaft 11. Of course, the elastic member 191 can also be sleeved on the compression spring of the pivot shaft 11. The shaft assembly 10 can also omit the cam 15, the cam follower 17 and the elastic member 191.

The transmission assembly 30 includes two rotating shafts 31, a secondary gear 33 respectively sleeved on the two rotating shafts 31, and two elastic members 35. The rotating shaft 31 has a deforming portion 311 having a non-circular cross section and a plug portion 313 having a circular cross section. The secondary gear 33 is sleeved on the plug portion 313 and the thickness of the secondary gear 33 is smaller than the thickness of the main gear 13. In the present embodiment, the secondary gear 33 is a straight bevel gear, and may of course be a helical bevel gear. The thickness of the secondary gear 33 is one-half the thickness of the main gear 13. The elastic member 35 is a disc-shaped elastic piece and is disposed at the large-diameter end of the secondary gear 33. Of course, the elastic member 35 may also be a compression spring, and the number may be greater than three, in addition to being disposed at the large-diameter end of the secondary gear 33, An elastic member 35 is provided at the large diameter end of the main gear 13.

The first connecting member 50 includes a resisting portion 51 and a fixing portion 53 formed by bending from the edge of the resisting portion 51. A circular pivot hole 511 is defined in each of the two adjacent edges of the abutting portion 51, and two non-circular shaft holes 513 are defined between the pivot holes 511. The fixing portion 53 is perpendicular to the abutting portion 51 for connecting with a connecting arm (not shown) between the cover and the body of the electronic device.

The second connecting member 70 is an elongated plate member, and a pivot hole 71 is defined in a portion corresponding to the pivot hole 511 of the first connecting member 50, and a portion corresponding to the rotating shaft hole 513 of the first connecting member 50 is opened. The shaft hole 73 and the shaft hole 73 of the second connecting member 70 are round holes for engaging with the plug portion 313 of the rotating shaft 31.

The reinforcing member 90 includes a pressing portion 91 of a plate-like structure and a tab 93 formed by bending from the edge of the pressing portion 91. The pressing portion 91 has the same structure as the second connecting member 70, and the second limiting hole 911 is defined thereon. The tab 93 is used to securely attach the reinforcement 90 to the first connector 50. In the present embodiment, the tab 93 is perpendicular to the pressing portion 91.

Referring to FIG. 4 again, the deformation portion 311 of the two shafts 31 of the transmission assembly 30 is respectively inserted into the two shaft holes 513 of the abutting portion 51 of the first connecting member 50, and the secondary gear 33 is sleeved. It is provided on the rotating shaft 31. The deformation shaft segment 111 of the pivot 11 of the shaft assembly 10 is sequentially passed through the pivot hole 511 of the abutting portion 51 of the first connecting member 50, the center hole 131 of the main gear 13, and the pivot hole 71 of the second connecting member 70. The reinforcing member 90, the shaft hole 1511 of the cam 15, the sleeve hole 171 of the cam follower 17, and the sleeve assembly 19 lock the fastener 195 of the sleeve assembly 19 and the end of the pivot shaft 11. The abutting portion 51 of the first connecting member 50 abuts against the first flange 113 of the pivot shaft 11, and the secondary gears 33 mesh with each other and mesh with a main gear 13 respectively. The two-axis assembly 10 is coupled to the first connector member 50, the second connector member 70, and the reinforcement member 90 in the same manner, that is, the assembly of the hinge structure 100 is completed.

In the hinge structure 100, the first connecting member 50 and the second connecting member 70 form a "concave"-shaped receiving space (not shown), and the main gear 13, the secondary gear 33 and the elastic member 35 are clamped to the first The abutting portion 51 of the connecting member 50 and the second connecting member 70 are received in the accommodating space. The engaging portion 153 of the cam 15 is engaged in the limiting hole 911 of the reinforcing member 90.

When the cover of the electronic device drives the one shaft assembly 10 to rotate relative to the other shaft assembly 10, one of the main gears 13 transmits torque through the secondary gear 33 to the other main gear 13, causing the two main gears 13 to rotate in opposite directions. The cover of the electronic device and the body are interlocked to open and close, thereby achieving twice the opening and closing speed. During the rotation, the elastic member 35 always abuts against the large diameter end of the secondary gear 33, so that the secondary gear 33 is tightly engaged with the main gear 13.

In the hinge structure 100, since the elastic member 35 applies an elastic abutting force to the secondary gear 33, when there is little wear between the secondary gear 33 and the main gear 13, the elastic member 35 pushes the secondary gear 33 along the shaft. The movement is moved to be stably meshed with the main gear 13 to avoid a gap between the secondary gear 33 and the main gear 13, thereby ensuring high transmission precision and transmission stability of the hinge structure 100.

In the hinge structure 100, the cam follower 17 of the shaft assembly 10 rotates with respect to the cam 15 with the pivot shaft 11. During the rotation, the first protrusion 1513 and the second protrusion 1515 of the cam 15 abut against the cam follower The different portions of the 17 further achieve the purpose of changing the axial force between the elements of the shaft assembly 10 and allow the hinge structure 100 to be stably maintained at a particular angle during rotation.

The accommodating space formed by the first connecting member 50 and the second connecting member 70 can play a certain dustproof function, thereby ensuring normal rotation of the main gear 13 and the transmission assembly 30.

It can be understood that the reinforcing member 90 can be omitted, and the engaging portion 153 of the cam 15 can be engaged in the rotating shaft hole 73 of the second connecting member 70.

The thread at the end of the pivot 11 can be omitted, and the element on the pivot 11 is axially locked using a pin extending through its end.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100. . . Hinge structure

10. . . Shaft assembly

30. . . Transmission component

50. . . First connector

70. . . Second connector

90. . . Firmware

11. . . Pivot

13. . . Main gear

15. . . Cam

17. . . Cam follower

19. . . Bushing assembly

111. . . Deformed shaft segment

113. . . First flange

115. . . Second flange

117. . . Connection

131. . . Center hole

151. . . Ontology

153. . . Clamping department

1511. . . Shaft hole

1513. . . First bulge

1515. . . Second bump

171. . . Socket hole

173. . . Groove

191. . . Elastic part

193. . . Friction plate

195. . . fastener

31. . . Rotating shaft

33. . . Secondary gear

35. . . Elastic part

311. . . Deformation department

313. . . Plug-in

51. . . Responsible department

53. . . Fastening

511, 71. . . Pivot hole

513, 73. . . Shaft hole

91. . . Compression department

93. . . Tab

911. . . Limit hole

1 is an assembled view of a hinge structure according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the hinge structure of Figure 1.

Figure 3 is another view of an exploded view of the hinge structure of Figure 1.

4 is a top plan view of the hinge structure of FIG. 1.

100. . . Hinge structure

10. . . Shaft assembly

30. . . Transmission component

50. . . First connector

70. . . Second connector

90. . . Firmware

11. . . Pivot

13. . . Main gear

15. . . Cam

17. . . Cam follower

19. . . Bushing assembly

111. . . Deformed shaft segment

113. . . First flange

115. . . Second flange

117. . . Connection

131. . . Center hole

151. . . Ontology

153. . . Clamping department

1511. . . Shaft hole

1513. . . First bulge

1515. . . Second bump

171. . . Socket hole

191. . . Elastic part

193. . . Friction plate

195. . . fastener

31. . . Rotating shaft

33. . . Secondary gear

35. . . Elastic part

311. . . Deformation department

313. . . Plug-in

51. . . Responsible department

53. . . Fastening

511, 71. . . Pivot hole

513, 73. . . Shaft hole

91. . . Compression department

93. . . Tab

911. . . Limit hole

Claims (10)

A hinge structure includes two pivots, two rotating shafts, two main gears respectively sleeved on the corresponding pivot shafts, and two secondary gears respectively corresponding to the two rotating shafts. The secondary gears are disposed between the main gears and The main gear is meshed, and the improvement is that the hinge structure further includes a first connecting member and a second connecting member, wherein the main gear and the secondary gear are disposed between the first connecting member and the second connecting member, and the first connecting member and The second connecting member is sleeved on the pivot shaft and the rotating shaft, wherein the two main gears and the secondary gear are both bevel gears, and the large diameter end of the main gear and the large diameter end of the secondary gear are sequentially turned in opposite directions The hinge structure further includes at least two elastic members that abut against the large diameter end of the secondary gear. The hinge structure of claim 1, wherein the main gear and the secondary gear are straight bevel gears. The hinge structure of claim 1, wherein the thickness of the secondary gear is less than the thickness of the main gear. The hinge structure of claim 3, wherein the thickness of the secondary gear is one-half the thickness of the main gear. The hinge structure of claim 1, wherein the main gear has a non-circular center hole, and a portion of the pivot shaft passing through the main gear is non-circular. The hinge structure of claim 1, wherein the hinge structure further comprises a cam and a cam follower that abut each other, the cam forms a protrusion, and the cam follower is formed on the cam The concave portion of the convex fit. The hinge structure of claim 1, wherein the first connecting member comprises a resisting portion that is sleeved on the pivot shaft and the rotating shaft, and a fixing portion that is bent and formed on a side of the resisting portion, the first A connecting member and the second connecting member form a half-closed accommodating space. The hinge structure of claim 1, wherein the hinge structure further comprises a reinforcing member that abuts against a side of the second connecting member away from the first connecting member. The hinge structure of claim 1, wherein the pivot has a first flange and a second flange, the first flange and the second flange being apart from each other, the first flange and the first flange The connector is in contact. The hinge structure of claim 1, wherein the first connecting member has two non-circular holes, and one end of the rotating shaft has a non-circular cross section.