JP2012077528A - Opening/closing unit and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open and close a cover with a small number of parts.SOLUTION: An opening/closing unit 1 comprises: an opening/closing member 10 having a first shaft 16 and a second shaft 17; an opening 21a which is opened and closed by using the opening/closing member; and a fixed member 20 having a first guide groove 24 which engages with the first shaft and a second guide groove 25 which engages with the second shaft formed therein. The opening/closing unit conducts an opening/closing operation by the steps of: turing the opening/closing member around the second shaft to move the first shaft along the first guide groove, and turing the opening/closing member around the first shaft to move the second shaft along the second guide groove.

Description

  The present invention relates to an opening / closing unit and an electronic apparatus having the same.

  The lid opening / closing unit that covers the terminal portion, the input / output unit, and the medium insertion port of the electronic device is required to have a reduced number of components and a small structure as the electronic device is downsized. In this regard, Patent Document 1 proposes an elevator door that is provided with a door body between a pair of support columns, connects the two with a connecting member and a support arm, and opens the door body in the horizontal direction from the vertical direction.

JP-A-7-62962

  However, since Patent Document 1 relates to a garage and a gate door, it is large in the first place, and since the opening / closing mechanism of Patent Document 1 requires a support arm, the lid opening / closing unit of the electronic apparatus has a large number of parts.

  Accordingly, an object of the present invention is to provide an open / close unit that opens and closes a lid with a small number of parts and an electronic device having the open / close unit.

  The opening / closing unit of the present invention includes an opening / closing member having a first shaft and a second shaft, an opening opened / closed by the opening / closing member, a first guide groove engaged with the first shaft, A fixing member formed with a second guide groove that engages with the second shaft, and the opening and closing member rotates about the second shaft, so that the first shaft becomes the first shaft. The second shaft rotates along the second guide groove by moving along the first guide groove and rotating around the first shaft.

  According to the present invention, it is possible to provide an open / close unit that opens and closes a lid with a small number of parts and an electronic apparatus having the open / close unit.

It is a disassembled perspective view of the opening / closing unit of a present Example. It is a top view of the opening / closing unit shown in FIG. It is a perspective view of the opening / closing unit shown in FIG. FIG. 4 is a top view of the opening / closing unit shown in FIG. 3.

  FIG. 1 is an exploded perspective view of the opening / closing unit 1 of the present embodiment. The opening / closing unit 1 is used in a part of a housing of an electronic device (not shown) such as a digital camera, a computer, a game machine, or a PDA, and opens and closes a lid that covers a terminal portion, an input / output unit, a medium insertion port, and the like of the electronic device. . The opening / closing unit 1 includes an opening / closing member 10, a fixing member 20, and an urging member 30.

  The opening / closing member 10 includes a lid portion 11 as a front portion for opening and closing a terminal portion, an input / output portion, a medium insertion port, and the like of an electronic device (not shown), and a pair of guide portions 15 coupled to the upper and lower ends of the lid portion 11; And is attached to the fixing member 20 so as to be rotatable with respect to the fixing member 20.

  In FIG. 1, a finger engagement portion 12 on which a finger to which a user applies a force for opening and closing the opening and closing member 10 is placed is formed at the center of the left end of the lid portion 11. The opening / closing unit 1 is not limited to one in which the lid portion 11 is manually opened / closed, and can be applied to a case where the opening / closing unit 1 is automatically opened / closed using an opening / closing means such as a motor.

  A display unit 13 is formed in the center of the front surface of the lid unit 11. The display unit 13 can display the movement direction and state of the lid unit 11, information on the electronic components on the back, and other information, but whether the display unit 13 is provided is optional.

  In FIG. 1, the right end surface of the lid portion 11 is processed into a curved surface 14 to make the opening / closing operation smooth. If the rotation direction of the opening / closing member 10 is reversed, the positional relationship between the finger engaging portion 12 and the curved surface 14 is reversed.

  Each guide portion 15 has a substantially triangular thin plate structure, and each guide portion 15 is coupled to the upper and lower ends of the lid portion 11 and extends perpendicularly to the front surface of the lid portion 11 on one side of the triangle. The pair of guide portions 15 extend in parallel. Each guide portion 15 guides the rotation of the lid portion 11 and has a first shaft 16 and a second shaft 17 on the other side (two vertices) of the triangle.

  The first shaft 16 and the second shaft 17 are fixed to the guide portions 15 and extend outwardly from the surface of the guide portions 15 perpendicularly to the surface of the guide portions 15. In each guide portion 15, the first shaft 16 and the second shaft 17 are parallel and have the same length in the present embodiment, but the lengths of both may be different.

  The lid 11 is rotated and guided by the two axes of the first shaft 16 and the second shaft 17. Since the dead space required when the lid portion 11 is opened and closed by two axes is smaller than the dead space required when the lid portion is opened and closed by one axis, it contributes to miniaturization of the opening and closing unit and the electronic device.

  The fixing member 20 is fixed to a part of the housing of the electronic device (not shown) or the housing. The fixing member 20 includes a front surface portion 21 and a pair of guide portions 23 coupled to upper and lower ends of the front surface portion 21.

  The front portion 21 has a rectangular thin plate structure, and has a rectangular opening 21a that exposes a terminal portion, an input / output portion, a medium insertion opening, and the like of an electronic device (not shown) in the center. The opening 21a is opened and closed by the lid portion 11 of the opening and closing member 10, and the opening and closing member 10 keeps the terminal portion of the internal electronic equipment and the like from being protected from external impacts while being protected from dust.

  Further, a recess 22a is formed at the center of the left side of the opening 21 shown in FIG. 1 to assist the user's finger engagement with the finger engagement portion 12 of the lid portion 11 in the closed state. Similarly, a recess 22b is formed at the center on the right side of the opening 21 shown in FIG. 1 to assist the user's finger engagement with the finger engagement portion 12 of the lid portion 11 in the open state.

  Each guide portion 23 has a substantially rectangular thin plate structure, and each guide portion 23 is coupled to the upper and lower ends of the front surface portion 21 and extends perpendicularly to the front surface of the front surface portion 21 on one side of the rectangle. The pair of guide portions 23 extend in parallel.

  Each guide portion 23 includes a first guide groove 24, a second guide groove 25, an engagement portion 26, and a deformation portion 27.

  The first guide groove 24 engages with the first shaft 16 of the opening / closing member 10 and extends substantially perpendicular to the front surface of the front surface portion 21. The second guide groove 25 engages with the second shaft 17 of the opening / closing member 10 and is inclined with respect to the front surface of the front surface portion 21 (with respect to the first guide groove 24 as shown in FIG. 2 described later). The second guide groove 25 is formed at a position different from that of the first guide groove 24 and extends in a different direction.

  As described above, the direction in which the first shaft 16 and the second shaft 17 are aligned is inclined with respect to the front surface of the lid portion 11. When the first shaft 16 and the second shaft 17 are arranged along the front surface of the lid portion 11, if the lid portion 11 is rotated 90 degrees, the first shaft 16 and the second shaft 17 are also 90 degrees accordingly. Rotate. For this reason, the fixing member 20 must ensure a length corresponding to the distance between the first shaft 16 and the second shaft 17 after rotation in a direction perpendicular to the front surface of the front surface portion 21, and thus the guide portion 23. The fixing member 20 becomes large. When the direction in which the first shaft 16 and the second shaft 17 are aligned is tilted with respect to the front surface of the lid portion 11 as in the present embodiment, the length in the direction perpendicular to the front surface of the front surface portion 21 of the guide portion 23. Therefore, it is possible to reduce the size of the fixing member 20.

  The end portion 24a of the first guide groove 24 functions as a closing stopper for preventing the opening / closing member 10 from moving in a direction biased by the biasing member 30 by a predetermined amount or more in the closed state. Similarly, the end portion 25a of the second guide groove 25 functions as an opening stopper for preventing the opening / closing member 10 from moving in a direction biased by the biasing member 30 by a predetermined amount or more when in the open state. .

  The engaging portion 26 is a cylindrical protrusion that is inserted into the coil portion 31 of the torsion coil spring, which is the urging member 30, and rotatably guides the urging member 30, but the shape is not limited. As long as the engaging part 26 engages with the urging member 30, the engaging part 26 may be provided on the inner surface of the guide part 23 or may be provided on the outer surface. In addition, the engaging part 26 may be provided only in the upper guide part 23, or may be provided in each guide part 23.

  The deformation portion 27 is formed on one side of the opening end portion of the second guide groove 25 via the groove 27a, and is provided on the fixing member 20 so as to be somewhat elastically deformable on the groove 27a side. As will be described later, when the opening / closing member 10 is attached to the fixing member 20, the deformation portion 27 is elastically deformed to widen the opening end portion of the second guide groove 25, and the second shaft 17 becomes the second guide groove. 25 has a function to facilitate insertion. In addition, the deforming portion 27 is elastically deformed after the second shaft 17 is inserted into the second guide groove 25, and the opening end portion of the widened second guide groove 25 is returned to the original position to return to the second position. The shaft 17 has a function of retaining the second guide groove 25 so as not to be detached.

  In another embodiment, the deforming portion is formed on one side of the opening end portion of the first guide groove 24 via a groove, and is provided on the fixing member 20 so as to be somewhat elastically deformable on the groove side. In this case, when the opening / closing member 10 is attached to the fixing member 20, the deforming portion is elastically deformed to widen the opening end portion of the first guide groove 24, and the first shaft 16 becomes the first guide groove 24. It has a function to make it easy to be inserted into the. Further, the deforming portion is elastically deformed after the first shaft 16 is inserted into the first guide groove 24, and the opening end portion of the widened first guide groove 24 is returned to the original position. The shaft 16 has a function of keeping the shaft 16 from detaching from the first guide groove 24.

  The urging member 30 is a torsion coil spring, the first arm portion 32 abuts on the first shaft 16, the second arm portion 33 abuts on the second shaft 17, and the coil portion 31 engages with the engagement portion. 26, and is configured to be rotatable about the engaging portion 26.

The opening angle θ ₀ between the first arm portion 32 and the second arm portion 33 of the biasing member 30 is a natural state opening angle of the torsion coil spring, and the biasing member 30 increases as the opening angle θ ₀ increases. The urging force by increases.

  As described above, the urging member 30 may be provided on one or both of the guide portions 23. Further, the urging member 30 is not limited to the torsion coil spring, and other urging means may be used.

  The biasing member 30 applies a biasing force to the opening / closing member 10 in a direction opposite to the direction in which the opening / closing member 10 rotates until the opening / closing member 10 rotates by a predetermined angle with respect to the fixing member 20. Further, the biasing member 30 applies a biasing force in the direction in which the opening / closing member 10 rotates when the opening / closing member 10 rotates by a predetermined angle or more with respect to the fixed member 20.

  FIG. 2 is a top view for explaining attachment of the opening / closing member 10 to the fixing member 20. The opening / closing member 10 is attached to the fixing member 20 by moving the first shaft 16 along the first guide groove 24 and the second shaft 17 along the second guide groove 25 in the direction of the arrow shown in FIG. By doing. When the opening / closing member 10 is attached, the deforming portion 27 is deformed to the groove 27a side and returns to the original shape after the attachment, thereby preventing the opening / closing member 10 from falling off the fixing member 20.

  FIG. 3 is a perspective view sequentially showing how the opening and closing member 10 opens from the closed state, and FIG. 4 is a top view sequentially showing how the opening and closing member 10 opens from the closed state. 3 and 4, states (A) to (E) indicate the same state.

The state (A) is a closed state of the opening / closing member 10. From this state, the user hooks his / her finger on the finger handle 13 and applies force to open the opening / closing member 10. Since the opening angle θ _A of the biasing member 30 in the closed state is smaller than the opening angle θ _B and the opening angle is close to the opening angle θ ₀ that is the natural state, the state (A) is more stable than the state (B). is doing. Moreover, since the urging | biasing force of the urging | biasing member 30 is acting on the opening / closing member 10 in the direction pressed against the edge part 24a, a closing state can be maintained.

The state (B) is a state in which the user is starting to open the opening / closing member 10. In this state, the opening / closing member 10 rotates about the second shaft 17, so that the first shaft 16 moves along the first guide groove 24. Further, when the opening / closing member 10 rotates about the second shaft 17, the biasing member 30 is charged by the first shaft 16 moving along the first guide groove 24. Since the opening angle θ _B of the urging member 30 is larger than the opening angle θ _A , the urging force that approaches the closed state acts on the opening / closing member 10. That is, if the user releases the force in the state (B), the state returns to the state (A).

In the state (C), the opening / closing member 10 rotates about the second shaft 17, and the operation of moving the first shaft 16 along the first guide groove 24 is finished. At this time, the opening angle θ _C of the urging member 30 becomes maximum during the opening / closing operation. If the opening / closing member 10 is closer to the closed state than the state (C), a biasing force that approaches the closed state is applied, and if the opening / closing member 10 is close to the open state, a biasing force that approaches the open state is applied. That is, in the state (C), the action of the urging force of the urging member 30 on the opening / closing member 10 is reversed.

In the state (D), the opening / closing member 10 rotates around the first shaft 16, and the second shaft 17 moves along the second guide groove 25. When the opening / closing member 10 rotates about the first shaft 16, the urging member 30 is charged as the second shaft 17 moves along the second guide groove 25. Larger than the opening angle theta _D is the opening angle theta _E of the biasing member 30, the opening and closing member 10, acts urging force closer to the opening state.

In the state (E), the opening / closing member 10 rotates about the first shaft 16 and the operation of the second shaft 17 moving along the second guide groove 25 is finished. At this time, the opening / closing member 10 is in the open state, the opening angle θ _E of the biasing member 30 is smaller than the opening angle θ _D , and the opening angle is close to the opening angle θ ₀ in the natural state, so the state (E) is More stable than state (D). Since the urging force of the urging member 30 is acting on the opening / closing member 10 in a direction in which the opening / closing member 10 is pressed against the end portion 25a, the open state can be maintained.

  In this embodiment, the first shaft 16 and the second shaft 17 of the opening / closing member 10 are guided by the first guide groove 24 and the second guide groove 25 of the fixing member 20, respectively, and a support arm is unnecessary. Because there are, the number of parts has decreased. In the present embodiment, the opening / closing member 10 is biased to the open state or the closed state by the small torsion coil spring engaged with the fixing member 20, so that the opening / closing unit 1 is small.

  Further, the first shaft 16 and the second shaft 17 are provided on sides different from the triangular side where each guide portion 15 is coupled to the lid portion 11, and the first shaft 16 and the second shaft 17 are provided. The direction in which the shafts 17 are arranged is inclined with respect to the front surface of the lid portion 11. For this reason, since the length in the direction perpendicular to the front surface of the front surface portion 21 of the guide portion 23 can be shortened, the fixing member 20 can be downsized.

  As mentioned above, although the preferable Example of this invention was described, this invention is not limited to these Examples, A various deformation | transformation and change are possible within the range of the summary.

  The opening / closing unit can be applied to electronic devices.

DESCRIPTION OF SYMBOLS 1 Opening / closing unit 10 Opening / closing member 16 1st axis | shaft 17 2nd axis | shaft 20 Fixing member 21a Opening 24 1st guide groove 25 2nd guide groove 27 Deformation part 30 Energizing member

Claims (5)

An opening and closing member having a first axis and a second axis;
An opening that is opened and closed by the opening and closing member; a first guide groove that engages with the first shaft; and a fixing member that is formed with a second guide groove that engages with the second shaft. ,
The opening / closing member rotates about the second axis, so that the first axis moves along the first guide groove, and rotates about the first axis. The opening / closing unit, wherein the second shaft moves along the second guide groove.   When the opening / closing member rotates about the second shaft, the first shaft is charged by moving along the first guide groove, and the opening / closing member is moved to the first shaft. 2. The opening / closing unit according to claim 1, further comprising an urging member that is charged when the second shaft moves along the second guide groove when rotating around the center of the opening / closing unit. .   The urging member is a torsion coil spring disposed on the fixing member such that a first arm portion abuts on the first shaft and a second arm portion abuts on the second shaft. The opening / closing unit according to claim 2.   The said fixing member further has a deformation | transformation part which elastically deforms so that the opening end part which expanded the opening end part of the said 1st guide groove or the said 2nd guide groove and returned may be returned. The opening / closing unit according to any one of 1 to 3.   An electronic apparatus comprising the opening / closing unit according to claim 1.