TWM509864U - Synchronous transmission device for use with dual shafts - Google Patents

Description

Synchronous transmission for double shaft

The present invention relates to a structural design of a synchronous transmission for a double shaft; in particular, a pivot, a base combined actuator and an elastic body disposed at both ends of the linkage, in the operation and operation, The true transmission of power makes the first and second axes relatively synchronous to produce a new type of synchronous rotation.

The utility model is equipped with a pivot or a rotating shaft which can be reciprocally rotated by an external force, and is mounted on an electronic object, such as a mobile phone, a notebook computer, a PDA, an e-book, etc., so that the cover or the display screen can be rotated to have an opening and closing function. The department has been a skilled skill. For example, Taiwan Patent No. 97222022 "Rotary Shaft Structure", No. 98207366 "Pivot Structure" and the like provide a typical embodiment.

In order to provide more operating modes and application ranges for display modules (eg, screens) and/or body modules of electronic objects, the prior art has also disclosed a method between a display module and a body module. The double shaft is arranged to enable the display module and/or the body module to generate different operating modes or rotation angles. For example, Taiwan No. 99211350 "Double Pivot Hub", US 7512426 B2 "MOBILE COMMUNICATIONS DEVICE WITH SYNCHRONISING HINGE" patent case, etc., provide a possible embodiment.

One of the problems in the operation, motion and structural design of such double-rotor or pivot assemblies is that the old method discloses a technique that uses a combination of multiple helical gears or helical gears to transmit power and synchronize the rotation of the two shafts. structure. Considering the gear forming or manufacturing tolerances, the fit between the gear and the gear must retain some clearance to avoid interference with their rigid meshing type or rotation, resulting in excessive wear and reduced service life.

However, as is known to those skilled in the art, when the matching clearance between the gear and the gear is applied to the double shaft or the pivot system of the electronic object, the idle stroke of the sliding slip is easily generated, which not only causes the kinetic energy to be delayed, but also This reduces the user's operational feel or feel; this is not what we expect.

Typically, these references show the use and structural design of the dual hinges or pivots and their associated bonded components. If the redesign considers the structure of the shaft and related components, as well as the above application, making it different from the conventional one, it will change its use type and increase its application range, which is different from the old method. For example, considering the shaft or its related combination components in accordance with the light and thin design requirements of the electronic device and the structural design of the synchronous movement, the operation is simple, and the matching gap between the gear and the gear is reduced as much as possible. Solving the above-mentioned molding tolerance problems, avoiding the interference of their rotation, causing excessive wear, reducing the service life, etc.; or further improving the free-running phenomenon of the double-rotor or pivot system of the conventional electronic device And kinetic energy transfer delay, reducing the user's operating feel and so on. None of these topics have been specifically taught or disclosed in the above references.

Therefore, the main purpose of this creation is to provide a synchronous transmission for a double shaft, which provides a function of reducing component tolerance and kinetic energy transmission delay. The synchronous transmission structure includes an actuator disposed on the first shaft and a reactor disposed on the second shaft; the actuator and the reactor respectively form a gear or helical gear structure. And a gear or a helical gear structure of the linkage, configured to connect the actuator and the reactor, so that the first shaft and the second shaft generate a synchronous rotation type. In essence, the actuator has a first end surface and a second end surface, respectively provided with a first elastic body and a second elastic body; the first and second elastic bodies respectively have a top portion, a bottom portion and a skirt portion connecting the top portion and the bottom portion; and The bottom of the first elastic body touches the first end surface of the connector, and the bottom or the top of the second elastic body touches the second end surface of the connector, and is combined on a base frame to improve the transmission efficiency and prevent the occurrence of an idle stroke. .

According to the present invention, a synchronous transmission for a double shaft is provided, and the base frame is provided with a pivoting portion that pivots the shafts at both ends of the coupling to form a rotatable type. The pivoting portion forms a U-shaped structure, restricting the coupling from moving on the X reference axis and the Y reference axis; and the first elastic body and the second elastic body are pushed in the axial direction of the coupling (or the Z reference axis) The pressure coupling prevents the axial displacement of the coupling and improves the tolerance accumulation of the component fit.

Referring to Figures 1 and 2, the synchronous transmission for the dual-axis includes a first axis and a second axis that are parallel to each other; respectively, which are denoted by reference numerals 10 and 20, respectively. The first shaft 10 and the second shaft 20 respectively have a fixing area 11 and 21 and a pivoting area 12, 22. The fixing regions 11 and 21 cooperate with the fixing frames 13 and 23 to fix the first shaft 10 and the second shaft 20 to the display module 91 and the body module 92 of the electronic device 90 (for example, a mobile phone, a computer, etc.). The first axis pivoting area 12 and the second axis pivoting area 22 (respectively) are combined with a torque module 80 to enable the first and second axes 10 and 20 to rotate the user to operate the display module 91 or the body module 92. When the force disappears, the positioning effect is obtained.

2 and 3 depict the first axle pivoting zone 12 and the second axle pivoting zone 22 with a synchronous transmission structure; the synchronous transmission structure includes an actuator 30, and the actuator 30 has a shaft hole 32. a pivoting end 12, driving or rotating with the first shaft 10; a reactor 40 having a shaft hole 42 disposed in combination with the second shaft pivoting end 22, driving or rotating with the second shaft 20; and, a linkage The device 50 is configured to connect the actuator 30 and the reactor 40. Therefore, when the first shaft 10 drives the actuator 30 to rotate, the actuator 30 drives the linkage 50 to rotate, forcing the reactor 40 and the second shaft 20 to rotate in the direction in which the opposite actuator 30 moves, so that the first shaft 10, The second shaft 20 acts to produce a synchronous rotation pattern.

In the embodiment taken, the actuator 30 and the reactor 40 are each a gear, helical gear or helical gear structure. Corresponding to the configuration of the actuator 30 and the reactor 40, the actuator 50 is a gear, helical gear or helical gear structure; includes a shaft 55 perpendicular to the first shaft 10 and/or the second shaft 20; the shaft 55 is disposed in linkage On the axis or axial region of the device 50, the shaft 55 protrudes from both end faces of the connector 50 (defined as the first end face 51 and the second end face 52, respectively), and has a first end 53 and a second end 54, respectively The first elastic body 56 and the second elastic body 60. And, the shaft 55 of the linker 50 is combined on a base frame 70 to form the rotatably movable type.

In detail, FIGS. 3 and 4 depict the first elastic body 56 and the second elastic body 60 in a disc-shaped elastic structure having a combination hole 56a, 61 which respectively engages the first end 53 and the second end of the shaft 55. 54. The first elastomer 56 and the second elastomer 60 each include a top portion 57, 62, a bottom portion 58, 63 at the peripheral regions of the combination apertures 56a, 61, and skirts 59, 64 connecting the top portions 57, 62, bottom portions 58, 63, respectively. And, the skirts 59, 64 are formed into a beveled or curved beveled configuration such that the area of the first elastomeric bottom portion 58 (or the second elastomeric bottom portion 63) is greater than the area of the first elastomeric top portion 57 (or the second elastomeric top portion 62). And the first elastomeric bottom portion 58 is brought into contact with the first end surface 51 of the connector 50, and the second elastomeric top portion 62 is in contact with the second end surface 52 of the connector 50.

Referring to Figures 2, 3 and 4, in order to facilitate the description of the embodiment, the base frame 70 defines an X reference axis, a Y reference axis and a Z reference axis; the Z reference axis is parallel to the axis 55 or the axis direction of the linker 50. The first side of the base 70 is provided with a first pivoting portion 71 and a second pivoting portion 72. The first pivoting portion 71 and the second pivoting portion 72 are U-shaped and have a pivotal interface 73, 74. , pivoting the shaft 55 at both ends of the coupling 50, respectively. That is, the pivotal interface 73 of the first pivoting portion 71 is pivotally connected to the first end 53 of the shaft 55; the pivotal interface 74 of the second pivoting portion 72 is pivotally connected to the second end 54 of the shaft. The pivot interfaces 73, 74 are formed with guide or lead structures 75, 76 to engage the first elastomer 56 and the second elastomer 60 on the connector 50. The base frame 70 is provided with pivot holes 77, 78 at both ends, respectively pivoting the first axis pivoting zone 12 and the second axle pivoting zone 22, and engaging the actuator 30 and the reactor 40 with the coupling 50 to form a synchronous motion. Type.

3 and 4 depict the U-shaped structure of the first pivoting portion 71 and the second pivoting portion 72 after the coupling 50 is combined with the base frame 70, and the limiting coupling 50 is not on the X reference axis and the Y reference axis. Move or shake. And the bottom portion 58 of the first elastic body 56 contacts the first end surface 51 of the connector, so that the top portion 57 and/or the skirt portion 59 (at least a portion of the region) is pressed against the pivot interface angle structure 75 of the first pivot portion 71; The bottom portion 63 of the second elastic body 60 presses the second pivot portion 72 such that the top portion 62 of the second elastic body 60 pushes against the second end surface 52 of the coupling 50. The first elastomer 56 and the second elastomer 60 provide a resilient action to reduce the forming tolerances of the linker 50 and the pedestal 70, and the linkage 50 is not biased by the actuator 30 or the reactor 40. Displacement or sway in the direction of the axis or the direction of the Z reference axis. Therefore, the combined structure of the base frame 70, the actuator 30, the reactor 40 and the interlock 50, and the first and second elastic bodies 56, 60 significantly improves the conventional gear transmission to easily cause sloshing, idle travel or kinetic energy transfer delay, The situation where the double shaft rotation is not synchronized.

At the same time, the pivotal interface angle structure 75 (or 76) of the base frame 70 and the top portion 57 (, 62) and/or the skirt portion 59 of the first elastomer 56 (or the second elastomer 60) on the linker 50 ( Between 64), a combined structure with a large contact area is formed, which is also advantageous for improving the tolerance accumulation of component mating.

Referring to Figure 5, a modified embodiment is shown. The tops 57, 62 and/or the skirts 59, 64 of the first elastic body 56 and the second elastic body 60 respectively contact the first pivoting portion 71 and the second pivoting portion 72 to make the tops 57, 62 and/or The skirts 59, 64 (at least a portion of the area) are respectively pressed against the pivotal interface corner structure 75 of the first pivoting portion 71, the pivotal interface corner structure 76 of the second pivoting portion 72, and the bottom of the first elastic body 56 58. The bottom portion 63 of the second elastic body 60 respectively presses the first end surface 51 and the second end surface 52 of the coupling 50, so that the linkage 50 is not driven by the actuator 30 or the reactor 40 in the axial direction. Or displacement or sway in the direction of the Z reference axis.

Typically, this synchronous transmission for a double-shaft has the following considerations and advantages compared with the old method in the case of synchronous operation and easy operation: 1. The first The shaft 10, the second shaft 20 and the associated assembly structure (for example, the coupling 50 cooperates with the shaft 55 such that the first end surface 51 and the second end surface 52 are respectively provided with the first elastic body 56 and the second elastic body 60; the first elastic body 56; The second elastic body 60 includes a top portion 57, 62, a bottom portion 58, 63, and a skirt portion 59, 64 forming a bevel structure; the base frame 70 is provided with a first pivot portion 71, a second pivot portion 72 and a pivot of the U-shaped structure. The interfaces 73, 74 pivotally connect the first end 53 and the second end 54 of the shaft 55 such that the linker 50 rotates freely to move the actuator 30 and the reactor 40; the pivot interfaces 73, 74 are provided with the lead structures 75, 76. The combination of the first elastic body 56 and the second elastic body 60 forming a larger combined area and the like constitutes a synchronous transmission, which has been redesigned; and is distinct from the conventional technique of applying a plurality of helical gears or Helical gear meshing drive, transmitting power or transmission shaft movement knot Type. 2. The first pivoting portion 71 and the second pivoting portion 72 of the base frame 70 cooperate with the transmission structure design of the coupling 50, the first elastic body 56 and the second elastic body 60, which not only change compared with the old method. Its use type increases its application range, which is beneficial to meet the requirements of light and thin design of electronic devices. At the same time, the first elastic body 56 and the second elastic body 60 cooperate with the structural design of the base frame 70 to make the assembly. The matching clearance is reduced as much as possible, which solves the problem of the molding tolerance of the old method, and also improves the interference caused by the rotation of the conventional structure, causing excessive wear of the parts and reducing the service life. Moreover, the double-rotor or pivot system like the conventional electronic device is prone to a situation in which the idle stroke phenomenon of the rotational sliding and the kinetic energy transmission delay, and the user's operation feel are reduced, and a significant improvement is also obtained.

Therefore, this creation department provides an effective synchronous transmission device for double-rotating shafts. Its spatial type is different from the conventional ones, and it has the advantages unmatched in the old method. It shows considerable progress. Fully meet the requirements of the new patent.

However, the above is only a feasible embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the creative patent. .

10‧‧‧ first axis

11, 21‧‧‧ fixed area

12, 22‧‧‧ pivotal area

13, 23‧‧‧ fixed frame

20‧‧‧second axis

30‧‧‧Driver

32, 42‧‧‧ shaft hole

40‧‧‧Reactor

50‧‧‧Connector

51‧‧‧ first end face

52‧‧‧second end face

53‧‧‧ first end

54‧‧‧second end

55‧‧‧Axis

56‧‧‧First Elastomer

56a, 61‧‧‧ combination holes

57, 62‧‧‧ top

58, 63‧‧‧ bottom

59, 64‧‧‧ skirt

60‧‧‧Second elastomer

70‧‧‧ pedestal

71‧‧‧First pivotal

72‧‧‧Second pivotal

73, 74‧‧‧ pivot interface

75, 76‧‧‧ lead angle structure

77, 78‧‧‧ pivot hole

80‧‧‧Torque Module

90‧‧‧Electronic objects

91‧‧‧Display module

92‧‧‧body module

The first figure is a schematic diagram of the structure combination of the creation; the imaginary line part of the figure shows the display module of the electronic object, the situation of the body module, and the structural form of the first axis, the second axis combination torque module and the fixed frame. .

2 is a schematic exploded view of the first drawing; depicting the structural forms of the first shaft, the second shaft, the pedestal, the actuator, the interlock, the reactor, the fixing frame, and the torque module.

Fig. 3 is a partial structural view of Fig. 2; showing the structure of the pedestal, the actuator, the actuator, the reactor, the first elastomer and the second elastomer.

Fig. 4 is a schematic cross-sectional view showing the combined structure of Fig. 3; depicting the cooperation of the base frame, the interlocking body, and the first elastic body and the second elastic body.

Figure 5 is a cross-sectional view showing the combined structure of a modified embodiment of the present invention; depicting the cooperation of the base frame, the interlocking body, and the first elastic body and the second elastic body.

30‧‧‧Driver

32, 42‧‧‧ shaft hole

40‧‧‧Reactor

50‧‧‧Connector

52‧‧‧second end face

53‧‧‧ first end

54‧‧‧second end

55‧‧‧Axis

56‧‧‧First Elastomer

56a, 61‧‧‧ combination holes

57, 62‧‧‧ top

58, 63‧‧‧ bottom

59, 64‧‧‧ skirt

60‧‧‧Second elastomer

70‧‧‧ pedestal

71‧‧‧First pivotal

72‧‧‧Second pivotal

73, 74‧‧‧ pivot interface

75‧‧‧Guide structure

77, 78‧‧‧ pivot hole

Claims (10)

The utility model relates to a synchronous transmission device for a double shaft, comprising: a base frame, which is provided with a first pivoting portion and a second pivoting portion; the first pivoting portion and the second pivoting portion respectively have a pivot interface; The upper actuator has a first end surface, a second end surface and a shaft; the shaft protrudes from the first end surface and the second end surface, and defines a first end and a second end; the first end pivotally connects the first pivot of the base frame a pivotal interface of the connecting portion, the second end pivotally pivoting the pivotal interface of the second pivoting portion of the base frame to rotate the connector; and the first end surface of the connector is provided with a first elastic body, and the second end surface is provided with a second elastic body The first elastic body and the second elastic body respectively have a combined hole, a top portion at the peripheral portion of the combined hole, a bottom portion, and a skirt portion connecting the top portion and the bottom portion; the first end of the combined hole of the first elastic body is combined with the first end, a second end of the combination of the two elastomers; the bottom end of the first elastomer touches the first end face of the connector, the first elastic body at least tops the first pivotal portion of the base frame; the top of the second elastic body and One of the bottoms contacts the second end of the actuator. The synchronous transmission device for double-rotating shaft according to claim 1, wherein the base frame is provided with a pivot hole at two ends thereof, respectively pivotally connecting a first shaft and a second shaft to make the first shaft and the second shaft The shafts are parallel to each other; the first shaft and the second shaft respectively have a fixed area and a pivoting area combining the pivot holes; the first shaft pivoting area is provided with an axial hole guide; the second shaft pivoting area is mounted A reactor with a shaft hole is provided; the linkage and the actuator and the reactor form a linkage, and the axis of the linkage is perpendicular to the first axis and the second axis. The synchronous transmission device for double shafts according to claim 2, wherein the actuator and the reactor are one of a gear and a helical gear structure; the corresponding actuator, the reactor, and the linkage are a gear And one of the helical gear structure, the meshing actuator and the reactor; the shaft of the connector is disposed on the axial center region of the connector; the first shaft pivoting region and the second pivoting region are combined with the torque module; The shaft fixing area and the second shaft fixing area are respectively coupled with a fixing frame and combined with an electronic object; the electronic device comprises a display module and a body module; the fixing frame of the first shaft fixing area and the fixing frame of the second shaft fixing area are respectively fixed The display module and the body module of the electronic object. The synchronous transmission device for double shafts according to claim 1 or 2 or 3, wherein the first elastic body and the second elastic body are formed into a disk-shaped elastic structure; the skirt of the first elastic body and the second The skirt of the elastomer is formed into one of a beveled and curved beveled structure such that the bottom area of the first elastomer is greater than the area of the top of the body, and the area of the bottom of the second elastomer is greater than the area of the top. The synchronous transmission device for a double shaft as described in claim 1 or 2 or 3, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from both sides of the base frame; the first pivoting portion, The second pivoting portion is formed into a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against In the pivotal interface structure of the first pivoting portion, the top of the second elastic body touches the second end surface of the connector, and the bottom of the second elastic body is pressed against the second pivoting portion. The synchronous transmission device for a double shaft according to the fourth aspect of the invention, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from two sides of the base frame; the first pivoting portion and the second pivoting portion Forming a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against the first pivoting In the pivotal joint structure of the portion, the top of the second elastic body presses the second end surface of the connector, and the bottom of the second elastic body is pressed against the second pivot portion. The synchronous transmission device for a double shaft as described in claim 1 or 2 or 3, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from both sides of the base frame; the first pivoting portion, The second pivoting portion is formed into a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against In the pivotal interface structure of the first pivoting portion, the second elastic body is at least pressed against the pivotal interface structure of the second pivoting portion, and the bottom of the second elastic body contacts the second end surface of the second elastic body. The synchronous transmission device for a double shaft according to the fourth aspect of the invention, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from two sides of the base frame; the first pivoting portion and the second pivoting portion Forming a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against the first pivoting In the pivotal interface structure of the portion, the second elastic body is at least pressed against the pivotal interface structure of the second pivoting portion, and the bottom of the second elastic body contacts the second end surface of the second elastic body. The synchronous transmission device for a double shaft according to the seventh aspect of the invention, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from two sides of the base frame; the first pivoting portion and the second pivoting portion Forming a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against the first pivoting In the pivotal joint structure of the portion, the top portion of the second elastic body and the portion of the skirt portion are pressed against the pivot joint structure of the second pivot portion, and the bottom portion of the second elastic body presses the second end surface of the second elastic body. The synchronous transmission device for a double shaft according to the invention of claim 8, wherein the first pivoting portion and the second pivoting portion protrude perpendicularly from two sides of the base frame; the first pivoting portion and the second pivoting portion Forming a U-shaped structure; and the pivotal interface of the first pivoting portion and the pivotal interface of the second pivoting portion are respectively formed with a lead-angle structure, so that the top portion of the first elastic body and the skirt portion are pressed against the first pivoting In the pivotal joint structure of the portion, the top portion of the second elastic body and the portion of the skirt portion are pressed against the pivot joint structure of the second pivot portion, and the bottom portion of the second elastic body presses the second end surface of the second elastic body.