JP2019113724A - Lid opening/closing mechanism and electronic apparatus - Google Patents

Abstract

To provide a lid opening/closing mechanism that is able to further facilitate opening of a lid body and is able to hold the lid body in an open position while further reducing backlash.SOLUTION: A lid opening/closing mechanism according to the present disclosure comprises: a link member having a first hinge shaft configured to be slidable to a first position and a second position along a support base, and a second hinge shaft 73; a lid body 6 mounted on the second hinge shaft 73 so as to freely rotate, and configured so as to be movable to a closed position and an open position; a first biasing member that biases the first hinge shaft from the first position to the second position; a third biasing member that biases the lid body in a rotating direction, in which the lid body is moved to the open position, around the second hinge shaft; a second biasing member that biases the link member in the rotating direction around the first hinge shaft; and a recess 5B that, when the lid body is located in the open position, engages with the link member and restricts slide of the first hinge shaft from the second position to the first position.SELECTED DRAWING: Figure 11

Description

  The present disclosure relates to a lid opening / closing mechanism and an electronic device provided with the lid opening / closing mechanism.

  Conventionally, as an electronic device provided with this kind of lid opening and closing mechanism, for example, one disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-80198) is known.

  Patent Document 1 includes a lid that covers an accessory connector (hereinafter referred to as a shoe angle) for mounting an accessory device such as a light or an external microphone, and the lid is attached as an accessory when the lid is opened. A structure for engaging and securing the device is disclosed.

JP, 2010-80198, A

  In electronic devices such as video cameras, further downsizing and thinning are required. On the other hand, since the size of the accessory device does not change, it is difficult to miniaturize the shoe angle. In addition, when the lid is opened, it is required to separate the hinge axis of the lid from the shoe angle so that the hinge axis of the lid does not disturb the attachment of the accessory device to the shoe angle.

  Therefore, when the lid is closed, the hinge axis of the lid is disposed closer to the shoe angle, and when the lid is opened, the hinge axis of the lid is slid away from the shoe angle. Is being considered. According to this configuration, by sliding the hinge axis of the lid, the hinge axis of the lid can be separated from the shoe angle, and downsizing and thinning of the electronic device main body provided with the shoe angle can be achieved. It will be possible.

  However, in the above configuration, the mechanism for sliding and moving the hinge axis of the lid is likely to be complicated, and the lid can be opened more easily, and the lid is held more easily in the open position. There is room for improvement in terms of

  An object of the present disclosure is to solve the above-mentioned problem, and it is possible to more easily open the lid, and provide a lid opening / closing mechanism that can hold the lid in the opening position more easily without rattling. It is to do.

A lid opening / closing mechanism according to the present disclosure includes a support base,
A link member having a first hinge axis configured to be slidable along a supporting base to a first position and a second position, and a second hinge axis arranged parallel to the first hinge axis. When,
A lid rotatably mounted on the second hinge shaft and movable to a closed position covering a partial area of the support base and an open position exposing a partial area of the support base;
A first biasing member that biases the first hinge shaft in a first direction from the first position toward the second position;
A second biasing member that biases the lid in a rotational direction in which the lid moves away from a partial region of the support base around the second hinge axis;
A third biasing member that biases the link member in the rotational direction about the first hinge axis;
A restricting portion that engages with the link member to restrict the sliding movement of the first hinge shaft in the second direction from the second position to the first position when the lid is in the open position;
Equipped with
The lid and the support base are engaged with each other to hold the lid in the closed position,
By releasing the engagement between the lid and the support base, the first hinge shaft slides from the first position to the second position by the biasing force of the first biasing member, and 3) The link member is rotated about the first hinge axis in the rotational direction by the biasing force of the biasing member, and the lid is centered on the second hinge shaft by the biasing force of the second biasing member The cover is configured to move to the open position by rotating in the rotational direction.

  According to the lid opening / closing mechanism of the present disclosure, the lid can be more easily opened, and the lid can be held in the open position more easily without rattling.

It is a perspective view of electronic equipment provided with a lid opening and closing mechanism concerning an embodiment. It is an exploded perspective view showing parts related to an upper case and a lid. It is a perspective view showing a state where a lid is located in a closed position. It is a perspective view which shows the state which a cover body is located in an open position. It is a perspective view which shows the state which removed the cover body from the state shown in FIG. It is the perspective view which looked at composition near the one 1st hinge axis when a lid is located in a closed position from diagonally seen from the upper part. It is the perspective view which looked at composition near the one 1st hinge axis when a lid is located in an open position from diagonally seen from the upper part. It is sectional drawing which shows the structure of the vicinity of one 1st hinge axis | shaft when a cover body is located in a closed position. It is sectional drawing which shows the structure of the vicinity of one 1st hinge axis | shaft when a cover body is located in an open position. It is a sectional view showing the composition near one engaging pin when a lid is located in a closed position. It is sectional drawing which shows the structure of the vicinity of one engagement pin when a cover body is located in an open position. It is the perspective view which looked at composition near the one 1st hinge axis when a lid is located in a closed position from diagonally downward. It is the perspective view which looked at composition near one one 1st hinge axis when a lid is located in an open position from diagonally downward. It is the perspective view which looked at composition near the link member when a lid is located in a closed position from diagonally downward. It is the perspective view which looked at composition near the link member when a lid is located in an open position from diagonally downward. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid. It is a sectional view showing opening and closing operation of a lid.

According to a first aspect of the present disclosure, a support substrate,
A link member having a first hinge axis configured to be slidable along a supporting base to a first position and a second position, and a second hinge axis arranged parallel to the first hinge axis. When,
A lid rotatably mounted on the second hinge shaft and movable to a closed position covering a partial area of the support base and an open position exposing a partial area of the support base;
A first biasing member that biases the first hinge shaft in a first direction from the first position toward the second position;
A second biasing member that biases the lid in a rotational direction in which the lid moves away from a partial region of the support base around the second hinge axis;
A third biasing member that biases the link member in the rotational direction about the first hinge axis;
A restricting portion that engages with the link member to restrict the sliding movement of the first hinge shaft in the second direction from the second position to the first position when the lid is in the open position;
Equipped with
The lid and the support base are engaged with each other to hold the lid in the closed position,
By releasing the engagement between the lid and the support base, the first hinge shaft slides from the first position to the second position by the biasing force of the first biasing member, and 3) The link member is rotated about the first hinge axis in the rotational direction by the biasing force of the biasing member, and the lid is centered on the second hinge shaft by the biasing force of the second biasing member A lid opening and closing mechanism is provided, wherein the lid is configured to move to the open position by rotating in the rotational direction.

  According to the second aspect of the present disclosure, the lid is moved from the state of being located at the open position toward the closing position, against the biasing force of the second biasing member centering on the second hinge axis. When the link member is rotated in the direction opposite to the rotation direction, the link member rotates in the direction opposite to the rotation direction against the biasing force of the third biasing member about the first hinge axis and the restriction The first hinge shaft is configured to slide from the second position to the first position against the biasing force of the first biasing member. The lid opening and closing mechanism according to the first aspect is provided.

  According to the third aspect of the present disclosure, the lid is attached to the second hinge shaft such that a gap is formed between the lid and the support base when the lid is in the open position. The lid opening and closing mechanism according to the first or second aspect is provided.

According to a fourth aspect of the present disclosure, the link member includes an engagement pin,
The lid according to any one of the first to third aspects, wherein the restricting portion is configured by a recess provided to engage with the engagement pin when the lid is in the open position. Provide an opening and closing mechanism.

According to the fifth aspect of the present disclosure, any one of the support base and the link member extends in the first direction to positions facing each other across the partial region of the support base in plan view. A pair of existing guide ribs are provided,
The other one of the support base and the link member is provided with a pair of guide grooves extending in the first direction at positions facing each other across the partial region of the support base in plan view,
The link member is configured to slide in the first direction by relatively moving the pair of guide ribs in the pair of guide grooves, according to any one of the first to fourth aspects. To provide a lid opening and closing mechanism.

According to a sixth aspect of the present disclosure, the first biasing member is provided in the vicinity of any one of the pair of guide grooves,
The gap between any one of the pair of guide grooves and the guide rib is wider than the gap between any one of the pair of guide grooves provided in the vicinity of the first biasing member and the guide rib. A lid opening and closing mechanism according to an aspect is provided.

  According to a seventh aspect of the present disclosure, the lid opening and closing mechanism according to any one of the first to sixth aspects is provided, wherein the first biasing member and the third biasing member are integrated. Do.

  According to an eighth aspect of the present disclosure, there is provided an electronic device comprising the lid opening and closing mechanism according to any one of the first to seventh aspects.

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, the detailed description may be omitted if necessary. For example, detailed description of already well-known matters and redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art.

  It is noted that the inventors provide the attached drawings and the following description so that those skilled in the art can fully understand the present disclosure, and intend to limit the subject matter described in the claims by these It is not a thing.

  In the following, for convenience of explanation, terms that indicate directions such as “upper” and “lower” are used on the assumption of a state of normal use, which means that the use state of the electronic device of the present invention is limited. It is not something to do.

<< Embodiment >>
FIG. 1 is a perspective view of an electronic device provided with a lid opening / closing mechanism according to the embodiment. In an embodiment, the electronic device is an imaging device, more specifically a video camera.

  As shown in FIG. 1, the electronic device 1 includes an opening / closing unit 2 including a liquid crystal monitor, a hinge unit 3, and an operation unit 4.

  The opening / closing unit 2 is disposed to cover one side of the housing of the electronic device 1. The opening / closing unit 2 includes a liquid crystal monitor (not shown) on the main surface facing the housing of the electronic device 1 in FIG.

  The hinge unit 3 is disposed in front of one side surface of the housing of the electronic device 1. The hinge unit 3 has a mechanism for connecting the housing of the electronic device 1 and the opening / closing unit 2. The hinge unit 3 is configured to be movable between an open state and a closed state of the open / close unit 2 with respect to the housing of the electronic device 1.

  The operation unit 4 is provided in the upper case 5 that constitutes the upper portion of the housing of the electronic device 1. The operation unit 4 is electrically connected to a terminal on the electronic control board disposed inside the housing of the electronic device 1. When the operation unit 4 is operated by the user, the operation instruction signal is transmitted from the operation unit 4 to the microcomputer on the electronic control board. Thus, the user can operate the electronic device 1 through the operation unit 4.

  A lid (also referred to as a shoe cover) 6 is attached to the upper case 5 so as to be openable and closable. The configuration other than the components related to the upper case 5 and the lid 6 is not particularly limited, and is the same as the configuration provided in the conventionally known electronic device, so the detailed description will be omitted here. Hereinafter, configurations of parts related to the upper case 5 and the lid 6 will be described in more detail.

  FIG. 2 is an exploded perspective view showing parts related to the upper case 5 and the lid 6. FIG. 3 is a perspective view showing the lid 6 in the closed position 6A. FIG. 4 is a perspective view showing the lid 6 in the open position 6B. FIG. 5 is a perspective view showing a state in which the lid 6 is removed from the state shown in FIG.

  As shown in FIG. 2, the upper case 5 is provided with a through hole 5A. An upper frame 51 and a shoe base 52 are attached to the upper case 5 below the through hole 5A so as to close the through hole 5A. In the embodiment, the upper case 5, the upper frame 51 and the shoe base 52 constitute a support base. The upper frame 51 is provided with a shoe angle 53 in a partial area located in the through hole 5A. The shoe angle 53 is an accessory connector for attaching an accessory device such as a light or an external microphone. In the embodiment, as shown in FIG. 4, the shoe angle 53 is fixed to the upper case 5 by a fastening member 54 such as a screw.

  The shoe base 52 is a substantially C-shaped member in a plan view. At both ends of the shoe base 52, engaging claws 52A, which are an example of engaging portions projecting upward, are provided. The pair of engaging claws 52A provided on the shoe base 52 is configured to engage with the pair of engaging claws 61, which is an example of an engaged portion provided on the lid 6. By engaging the pair of engagement claws 52A with the pair of engagement claws 61, the lid 6 is held at the closed position 6A covering the shoe angle 53 as shown in FIG. Further, as the engagement between the pair of engagement claws 52A and the pair of engagement claws 61 is released, the lid 6 moves to the open position 6B where the shoe angle 53 is exposed as shown in FIG.

  The lid 6 is rotatably attached to the link member 7. In the embodiment, the lid 6 has a plurality of cylindrical bearings 62. The link member 7 includes a main body 71, a first hinge shaft 72, and a second hinge shaft 73, as shown in FIG. The main body portion 71 is a substantially rod-like portion extending in a direction parallel to the first hinge shaft 72 and the second hinge shaft 73. The main body 71 has a plurality of cylindrical or U-shaped bearings 71A. By inserting the second hinge shaft 73 into the plurality of bearing portions 62 of the lid 6 and the plurality of bearing portions 71 A of the main body 71, the lid 6 is rotatably attached to the link member 7. The second hinge shaft 73 may be a separate component from the main body 71 as shown in FIG. 2 or may be integrally formed with the main body 71.

  The second hinge shaft 73 is disposed between the bearing portion 62 and the bearing portion 71A as shown in FIG. 4 or 5 in a state where the lid 6 is rotatably attached to the link member 7. It is provided to pass through a torsion coil spring 81 which is an example of the second biasing member. The torsion coil spring 81 is configured to bias the lid 6 in the rotational direction R1 in which the lid 6 separates from the shoe angle 53 about the second hinge shaft 73.

  The first hinge shaft 72 is disposed in parallel with the second hinge shaft 73. In the embodiment, the first hinge shaft 72 is divided into two, and is provided so as to protrude outward from one end and the other end in the extending direction of the main body 71. At the tip of each first hinge shaft 72, a link lever 74 extending in a direction intersecting (for example, at right angles) with the first hinge shaft 72 is provided. An engagement pin 75 projecting in a direction parallel to the first hinge shaft 72 is provided at the tip of the link lever 74.

  FIG. 6 is a perspective view of the configuration in the vicinity of one of the first hinge shafts 72 when the lid 6 is located at the closed position 6A (see FIG. 3) as viewed obliquely from above. FIG. 7 is a perspective view of the configuration in the vicinity of one of the first hinge shafts 72 when the lid 6 is located at the open position 6B (see FIG. 4) as viewed obliquely from above. FIG. 8 is a cross-sectional view showing a configuration in the vicinity of one first hinge shaft 72 when the lid 6 is located at the closed position 6A. FIG. 9 is a cross-sectional view showing a configuration in the vicinity of one first hinge shaft 72 when the lid 6 is located at the open position 6B.

  As shown in FIGS. 6 to 9, around the one first hinge shaft 72, a torsion coil spring 82, which is an example of a third biasing member, and a slide guide block 76 are provided. One end 82 A of the torsion coil spring 82 is attached to the slide guide block 76. The torsion coil spring 82 is provided to bias the link member 7 in the rotational direction R1 about the first hinge shaft 72. The slide guide block 76 is provided with a guide groove 76A into which a guide rib 5C described later is inserted.

  The other end of the torsion coil spring 82 is connected to one end of a torsion coil spring 83 which is an example of a first biasing member. That is, in the embodiment, the torsion coil spring 82 and the torsion coil spring 83 are integrated. This improves the handling and space efficiency. The other end 83A of the torsion coil spring 83 is attached to the upper case 5, as shown in FIGS.

  The first hinge shaft 72 is configured to be slidable along the shoe base 52 to a first position 72A shown in FIGS. 6 and 8 and a second position 72B shown in FIGS. 7 and 9. The torsion coil spring 83 is provided to urge the first hinge shaft 72 in the first direction X1 from the first position 72A toward the second position 72B. Further, the torsion coil spring 83 is provided so as to be accommodated in a recess 52B provided so as to be recessed downward in the shoe base 52.

  FIG. 10 is a cross-sectional view showing the configuration in the vicinity of one engagement pin 75 when the lid 6 is located at the closed position 6A. FIG. 11 is a cross-sectional view showing a configuration in the vicinity of one engagement pin 75 when the lid 6 is at the open position 6B.

  As shown in FIGS. 10 and 11, between the lower surface of the upper case 5 and the upper surface of the shoe base 52, a cam groove C1 for guiding the movement of the engagement pin 75 is provided. When the lid 6 moves to the closed position 6A and the open position 6B, the engagement pin 75 moves along the cam groove C1.

  As shown in FIG. 11, the lower surface of the upper case 5 is provided with a recess 5B which is an example of a regulating portion so as to engage with the engagement pin 75 when the lid 6 is positioned at the open position 6B. There is. When the lid 6 is in the open position 6B, the recess 5B engages with the engagement pin 75 to move from the second position 72B (see FIG. 9) of the first hinge shaft 72 to the first position 72A (see FIG. 8). Restrict movement to the second direction X2. Thereby, the lid 6 is held at the open position 6B without rattling.

  The lid 6 is attached to the second hinge shaft 73 so that a gap is formed between the lid 6 and the upper case 5 when the lid 6 is located at the open position 6B. As a result, contact between the lid 6 and the upper case 5 can be suppressed, and damage to the upper case 5 and damage to the appearance can be suppressed.

  FIG. 12 is a perspective view of the configuration in the vicinity of one of the first hinge shafts 72 when the lid 6 is located at the closed position 6A as viewed obliquely from below. FIG. 13 is a perspective view of the configuration in the vicinity of one of the first hinge shafts 72 when the lid 6 is located at the open position 6B as viewed obliquely from below. FIG. 14 is a perspective view of the configuration in the vicinity of the link member 7 when the lid 6 is located at the closed position 6A as viewed obliquely from below. FIG. 15 is a perspective view of the configuration in the vicinity of the link member 7 when the lid 6 is located at the open position 6B as viewed obliquely from below.

  As shown in FIGS. 14 and 15, on the lower surface of the upper case 5, a pair of guide ribs 5C extending in the first direction X1 are provided at positions facing each other across the through hole 5A in plan view. There is. The slide guide block 76 of the link member 7 is provided with a guide groove 76A at a position corresponding to the guide rib 5C. That is, the link member 7 is provided with a pair of guide grooves 76A extending in the first direction X1 at positions facing each other across the through hole 5A in plan view.

  Each guide rib 5C is inserted into the guide groove 76A of the slide guide block 76 described above. The link member 7 slides in parallel in the first direction X1 and the second direction X2 by the relative movement of the pair of guide ribs 5C in the pair of guide grooves 76A.

  Further, in the embodiment, the guide groove 76A (left side in FIG. 14) and the guide rib are more than the gap between the guide rib 76A (right side in FIG. 14) provided with the torsion coil springs 82 and 83 in the vicinity and the guide rib 5C. The gap with 5C is wide. Thus, the movement of the other guide rib 5C relative to the inside of the guide groove 76A can easily follow the movement of the one guide rib 5C relative to the inside of the guide groove 76A. As a result, the link member 7 can slide more smoothly and in parallel.

  Next, the operation of moving the lid 6 from the closed position 6A to the open position 6B will be described more specifically. 16A to 16I are cross-sectional views showing the opening and closing operation of the lid 6.

  When the lid 6 is positioned at the closed position 6A as shown in FIG. 16A, the above-described torsion coil springs 81 and 83 are in a state of having a biasing force. In this state, when the lid 6 is lifted away from the upper case 5 to release the engagement between the lid 6 and the upper case 5, as shown in FIG. 16B, the lid of the lid is moved by the biasing force of the torsion coil spring 81. 6 starts to rotate about the second hinge axis 73 in the rotational direction R1. Further, at this time, the first hinge shaft 72 starts to slide in the first direction X1 from the first position 72A by the biasing force of the torsion coil spring 83. Further, with the sliding movement of the first hinge shaft 72, the engagement pin 75 connected to the first hinge shaft 72 via the link lever 74 resists the biasing force of the torsion coil spring 82 and the cam groove C1. Start moving along.

  Thereafter, as shown in FIGS. 16C to 16H, the lid 6 is further rotated about the second hinge shaft 73 in the rotational direction R1 by the biasing force of the torsion coil spring 81. Further, the biasing force of the torsion coil spring 83 further moves the first hinge shaft 72 in the first direction X1, and the engagement pin 75 moves to the downstream end of the cam groove C1 in the first direction X1.

  Thereafter, as shown in FIG. 16I, the lid 6 is further rotated about the second hinge shaft 73 in the rotational direction R1 by the biasing force of the torsion coil spring 81, and a part of the lid 6 is the main body of the link member 7. By engaging with 71, the rotation of the lid 6 is stopped. At this time, the first hinge shaft 72 reaches the second position 72B by the biasing force of the torsion coil spring 83. Further, the link member 7 is rotated about the first hinge shaft 72 in the rotational direction R1 by the biasing force of the torsion coil spring 82, and the engagement pin 75 moves into the recess 5B. Thereby, the lid 6 is held at the open position 6B.

  Next, the operation of moving the lid 6 from the open position 6B to the closed position 6A will be more specifically described. The operation of moving the lid 6 from the open position 6B to the closed position 6A is opposite to the operation of moving the lid 6 from the closed position 6A to the open position 6B.

  As shown in FIG. 16I, from the state where the lid 6 is positioned at the open position 6B, the second hinge shaft 73 is directed to the closed position 6A against the biasing force of the torsion coil spring 81 against the rotational direction R1. The lid 6 is rotated. At this time, the force for rotating the lid 6 usually acts to push the second hinge shaft 73 obliquely downward.

  Thus, the link member 7 rotates in the direction opposite to the rotational direction R1 against the biasing force of the torsion coil spring 82 about the first hinge shaft 72, and as shown in FIG. 16H, the engagement pin 75 is recessed Away from 5B, the engagement state of the link member 7 is released. Further, the first hinge shaft 72 slides against the biasing force of the torsion coil spring 83 in the second direction X2, which is the direction opposite to the first direction X1. With the slide movement, the engagement pin 75 moves in the cam groove C1 in the order shown in FIGS. 16H, 16G, 16F, 16E, 16D, 16C, 16B, and 16A, and the lid 6 The engagement claw 61 engages with the engagement claw 52A of the shoe base 52. Thereby, the lid 6 is held at the closed position 6A.

  According to the embodiment, only by releasing the engagement between the engagement claw 61 of the lid 6 and the engagement claw 52A of the shoe base 52, the lid 6 is automatically operated by the biasing force of the torsion coil springs 81, 82, 83. Can be moved from the closed position 6A to the open position 6B. Therefore, the lid 6 can be more easily opened.

  Further, according to the embodiment, when the lid 6 is at the open position 6B, the engagement pin 75 engages with the recess 5B to restrict the movement of the first hinge shaft 72 in the second direction X2. Thereby, the lid 6 can be held at the open position 6B without rattling.

  Further, according to the embodiment, by moving the lid 6 from the open position 6B toward the closed position 6A, the force generated at the time of the movement is used to resist the biasing force of the torsion coil springs 81, 82, 83. Then, the link member 7 can be moved to hold the lid 6 at the closed position 6A. That is, the lid 6 can be more easily closed without performing complicated operations.

  In addition, this indication is not limited to the said embodiment, It can implement in other various aspects. Also, for example, in the above, when the lid 6 is positioned at the open position 6B, the engagement pin 75 of the link member 7 and the recess 5B of the upper case 5 engage with each other. Although the movement in the direction X2 is restricted, the present disclosure is not limited thereto. When the lid 6 is positioned at the open position 6B, the movement of the first hinge shaft 72 in the second direction X2 may be restricted. For example, the link member 7 has a recess, the upper case 5 has an engagement pin, and the recess and the engagement pin are engaged to restrict the movement of the first hinge shaft 72 in the second direction X2. May be configured.

  Further, in the above, the upper case 5 is provided with the pair of guide ribs 5C, and the link member 7 is provided with the pair of guide grooves 76A, but the present disclosure is not limited thereto. The link member 7 may be configured to slide in the first direction X1. For example, the upper case 5 may be provided with a pair of guide grooves, and the link member 7 may be provided with a guide rib. Further, for example, instead of the upper case 5, the shoe base 52 may be provided with a guide rib or a guide groove.

  Moreover, although the torsion coil springs 82 and 83 shall be provided 1 each in the above, this indication is not limited to this. For example, a pair of torsion coil springs 82 and 83 may be provided at positions facing each other across the shoe angle 53 in plan view.

  As described above, the embodiment has been described as an illustration of the technology in the present disclosure. For that purpose, the attached drawings and the detailed description are provided. Therefore, among the components described in the attached drawings and the detailed description, not only the components essential for solving the problem but also the components not essential for solving the problem in order to exemplify the above-mentioned technology May also be included. Therefore, the fact that those non-essential components are described in the attached drawings and the detailed description should not immediately mean that those non-essential components are essential.

  Moreover, since the above-mentioned embodiment is for illustrating the art in this indication, various change, substitution, addition, omission, etc. can be performed within the range of a claim or its equivalent.

  According to the lid opening and closing mechanism according to the present disclosure, the lid can be opened more easily, and the lid can be held in the opening position without rattling. It is useful as a lid opening and closing mechanism of the device.

DESCRIPTION OF SYMBOLS 1 electronic device 2 opening-closing unit 3 hinge unit 4 operation part 5 upper case 5A through hole 5B recessed part 5C guide rib 6 lid 6A closed position 6B open position 7 link member 51 upper frame 52 shoe base 52A engaging part 52B recessed part 53 shoe angle 54 Fastening member 61 engaging claw 62 bearing 71 main body 71A bearing 72 hinge axis 72A first position 72B second position 73 hinge axis 74 link lever 75 engagement pin 76 slide guide block 76A guide groove 81, 82, 83 torsion coil spring 82A one end 83A other end C1 cam groove

Claims (8)

A supporting substrate,
A link member having a first hinge axis configured to be slidable along a supporting base to a first position and a second position, and a second hinge axis arranged parallel to the first hinge axis. When,
A lid rotatably mounted on the second hinge shaft and movable to a closed position covering a partial area of the support base and an open position exposing a partial area of the support base;
A first biasing member that biases the first hinge shaft in a first direction from the first position toward the second position;
A second biasing member that biases the lid in a rotational direction in which the lid moves away from a partial region of the support base around the second hinge axis;
A third biasing member that biases the link member in the rotational direction about the first hinge axis;
A restricting portion that engages with the link member to restrict the sliding movement of the first hinge shaft in the second direction from the second position to the first position when the lid is in the open position;
Equipped with
The lid and the support base are engaged with each other to hold the lid in the closed position,
By releasing the engagement between the lid and the support base, the first hinge shaft slides from the first position to the second position by the biasing force of the first biasing member, and 3) The link member is rotated about the first hinge axis in the rotational direction by the biasing force of the biasing member, and the lid is centered on the second hinge shaft by the biasing force of the second biasing member A lid opening and closing mechanism, wherein the lid is configured to move to the open position by rotating in the rotational direction.   The cover is rotated in the direction opposite to the rotational direction against the biasing force of the second biasing member about the second hinge axis toward the closing position from the state where the lid is positioned at the open position. When the link member rotates in the direction opposite to the rotation direction against the biasing force of the third biasing member about the first hinge axis, the engagement between the restriction portion and the link member is The lid opening and closing according to claim 1, wherein the lid is opened and closed so that the first hinge shaft slides from the second position to the first position against the biasing force of the first biasing member. mechanism.   The lid according to claim 1 or 2, wherein the lid is attached to the second hinge shaft such that a gap is formed between the lid and the support base when the lid is in the open position. Lid opening and closing mechanism as described. The link member includes an engagement pin,
The restricting portion is configured by a recess provided to engage with the engagement pin when the lid is in the open position.
The lid opening / closing mechanism according to any one of claims 1 to 3. In one of the support base and the link member, a pair of guide ribs extending in the first direction are provided at positions facing each other across the partial region of the support base in plan view,
The other one of the support base and the link member is provided with a pair of guide grooves extending in the first direction at positions facing each other across the partial region of the support base in plan view,
The link member according to any one of claims 1 to 4, wherein the link member is configured to slide in the first direction by relatively moving the pair of guide ribs in the pair of guide grooves. Lid opening and closing mechanism. The first biasing member is provided in the vicinity of any one of the pair of guide grooves,
The gap between any one of the pair of guide grooves and the guide rib is wider than the gap between any one of the pair of guide grooves provided in the vicinity of the first biasing member and the guide rib. The lid opening and closing mechanism according to 5.   The lid opening / closing mechanism according to any one of claims 1 to 6, wherein the first biasing member and the third biasing member are integrated.   The electronic device provided with the lid opening / closing mechanism as described in any one of Claims 1-7.

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