JPH10199223A - Lock mechanism and cover opening/closing mechanism of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover opening/closing mechanism of an electronic apparatus which has prevented generation of an pseudolocking condition which is assumed to have provided the locking condition to the closed condition but also provides a fear for opening of cover in the cover opening/closing mechanism of an electronic apparatus. SOLUTION: A slider 7 which is arranged to slide to the main body 21 to be engaged with a lock pawl 9 of the cover when it is slid by an urging force of a spring 10 to lock the cover to the closed condition is pressurized in contact with a stopper 28 arranged to the main body 21 to stop at the position not engaging with the lock pawl 9 and is slid to the position engaging with the lock pawl 9 when the stopper 28 is moved and assures fine movement in the direction almost orthogonally crossing the slidable direction in the side to be in contact with at least the stopper 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for detachably fastening two members and a cover opening / closing mechanism for an electronic device for fastening a cover of an electronic device to a main body in a closed state. Belongs to the field.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a lock mechanism for detachably fastening two members. Further, as an application of the lock mechanism, a lid of an electronic device is attached to a main body of the electronic device. On the other hand, a lid opening / closing mechanism for an electronic device that is fastened in a closed state has been proposed.

[0003] Examples of electronic equipment having such a lid include a tape recorder and a tape player using a tape cassette as a recording medium, and a disk recorder and a disk player using a disk cartridge as a recording medium. That is, such an electronic device is the one shown in FIG.
As shown in FIG. 7, the lid 102 is opened as shown by an arrow a in FIG. 17, and after the recording medium is mounted on the main body 101, the lid 102 is closed. Thus, the recording medium is prevented from falling off from the main body 101.

In such an electronic apparatus, the lid 1
02, a rear edge side portion is connected to the main body 101 via a support shaft 103;
Is supported so as to be rotatable. When the lid 102 is in the closed state, the front edge portion is held by the slider 105 constituting the lid opening / closing mechanism, and the lid 102 is fastened to the main body 101.

The slider 105 is slidably mounted along the front edge of the main body 101, and is elastically urged in one direction by an urging member (not shown) as shown by an arrow g in FIG. I have. The slider 105 has a hook-shaped lock claw 1 on an upper edge portion facing a front edge portion of the lid body portion 102.
06. And, on this slider 105,
An operation knob 104 is provided. This operation knob 104
Faces the outside of the main body 101 via an opening provided in the front surface of the main body 101.

[0006] The front edge of the lid 102 has a locked piece 10 on the lower surface facing the upper edge of the slider 105.
7 are provided. When the lid 102 is in the closed state,
When the slider 105 is slid according to the urging force of the urging member, the lock claw 106 engages with the locked piece 107 to hold the lid 102 in the closed state. That is, in this lid opening / closing mechanism, the slider 105 is slid by the biasing member only by opening the lid 102, so that the lid 102 is held in the closed state.

Then, as shown by an arrow b in FIG. 17, a finger is pressed against the operation knob 104, and this finger causes
7, when the slider 105 is slid via the operation knob 104 against the urging force of the urging member, the engagement of the lock claw 106 with the locked piece 107 is released, The lid 102 is in a state where the lid can be opened.

[0008] In the lid opening / closing mechanism of such an electronic device, as shown in FIG.
Is provided with a stopper lever 111 for holding the slider 105 at a position where the slider 105 is slid against the biasing direction of the biasing member. That is, the stopper lever 111 has its base end located at the main body 1.
The slider 105 is rotatably supported by a support shaft 110 provided at the end of the slider 105, and the distal end of the support shaft 110 faces the end of the slider 105. The slider 105 whose distal end side of the stopper lever 111 faces
Is an end on the side that becomes the front end when the slider 105 slides according to the urging force of the urging member. The stopper lever 111 is rotationally urged by an urging member (not shown) in a direction to move the distal end side upward, that is, toward the lid 102, as indicated by an arrow e in FIG. The stopper lever 111 has a slit 113 on the distal end side, and a rotation range is regulated by inserting a support shaft 112 provided in the main body 101 into the slit 113. The lower end of the stopper lever 111, that is, the lid 1
On the side opposite to the side facing 02, an engagement protrusion 114 is provided so as to project toward the distal end side of the stopper lever 111.

The slider 105 has a slit 109, and a support shaft 108 provided on the main body 101 is inserted through the slit 109, so that the slider 105 is slidably supported on the main body 101. This slit 10
The width of 9 is made equal to the diameter of the support shaft 108. The reason why the width of the slit 109 is made equal to the diameter of the support shaft 108 is to prevent the slider 105 from moving in the up-down direction, and to prevent the lid body 102 held in the closed state from moving toward and away from the main body 101. This is to prevent it.

When the slider 105 is slid against the urging force of the urging member and the lock claw 106 is disengaged from the locked piece 107 and the lid 102 is opened, the stopper lever 111 It turns according to the urging force of the urging member, and the engagement protrusion 114 is brought into a state of facing the end of the slider 105. In this state, the slider 105
Is released, the slider 1 is released.
In the step 05, an attempt is made to return to the initial position in accordance with the urging force of the urging member, but it is stopped at the position where the end is brought into contact with the engaging projection 114. Thus, in a state where the end of the slider 105 is in contact with the engagement projection 114, the lock claw 10
Reference numeral 6 denotes a position where the engagement with the locked piece 107 is released.

When the lid 102 is closed, the locked piece 107 is stopped at the position where the slider 105 has its end abutted against the engaging projection 114.
The stopper lever 1 does not come into contact with the locking claw 106
11 is in contact with the tip side. Then, as shown by an arrow d in FIG. 18, when the cover body 102 is further closed, the locked piece 107 presses the distal end side of the stopper lever 111, and the stopper lever 111 is pushed by the arrow in FIG. 18. As shown by f, the rotation is performed against the urging force of the urging member. Then, the engagement projection 114 of the stopper lever 111 is disengaged below the end of the slider 105, and
The slide according to the urging force of the urging member of No. 5 is enabled.
At this time, the slider 105 slides according to the urging force of the urging member, and the lock claw 106 is engaged with the locked piece 107. The stopper lever 111 is held at a position rotated by resisting the urging force of the urging member by engaging the engaging protrusion 114 with the lower edge of the slider 105.

[0012]

By the way, in the lid opening and closing mechanism of the electronic device as described above, when the lid 102 is closed, the stopper lever 111 moves the locked piece 10.
If the pressing force of the lock piece 107 is stopped during the rotation by being pressed by the lock 7, FIG.
As shown in FIG.
In the state of contact with the arc-shaped portion (R portion) 115 at the lower corner of the end of the end portion 5, the dynamic friction between the distal end of the engaging projection 114 and the arc-shaped portion 115 at the lower corner of the end of the slider 105. Because the coefficient is large, the slider 105 is also
May also stop.

That is, when the lid 102 is moved to a specific position during the operation of closing the lid 102 and the lid closing operation is stopped, the slider 105, the stopper lever 111 and the lid The body 102 stops at each position, and the locking claw 106 is
7 is not fully engaged, so to speak, a false lock condition. In such a false lock state, based on the misunderstanding that the lid 102 has been closed,
The recording / reproducing operation of the information signal using the recording medium is started,
During the continuation of such a recording / reproducing operation, there is a possibility that an accident may occur that the lid 102 is opened due to vibration or the like.

Therefore, the present invention has been proposed in view of the above situation, and in a lock mechanism for detachably fastening two members, a pseudo mechanism that stops in an incompletely fastened state. An object of the present invention is to provide a lock mechanism that prevents a locked state from occurring and a lid opening / closing mechanism for an electronic device in which the lock mechanism is applied for fastening a main body portion and a lid portion of the electronic device. It is.

[0015]

In order to solve the above-mentioned problems, a lock mechanism and a lid opening / closing mechanism of an electronic device according to the present invention are slidably disposed on a first member and are unidirectionally moved by a biasing member. A slider that is elastically urged to engage with the second member and lock the second member to the first member when slid by the urging force of the urging member; The slider is movably disposed on the slider, stops the slider at a position where the slider is disengaged from the second member, and is moved in a direction substantially orthogonal to the slidable direction of the slider. A stopper for releasing the contact with the slider and enabling the slider to slide to a position where the slider engages with the second member. It is obtained by the fact that made it possible to fine movement in a direction substantially perpendicular to the direction possible.

Further, according to the present invention, in the above-mentioned lock mechanism, when the slider is at a position where the slider is engaged with the second member, fine movement in a direction substantially perpendicular to the slidable direction is prevented. It is what it was.

The lid opening / closing mechanism for an electronic device according to the present invention is slidably disposed on the main body of the electronic device, is elastically biased in one direction by a biasing member, and slides by the biasing force of the biasing member. A slider that engages with the lid of the electronic device to lock the lid in a closed state with respect to the main body, and a movably disposed slider on the main body to abut the slider. The slider is stopped at a position where the slider is disengaged from the lid, and is moved in a direction substantially perpendicular to the slidable direction of the slider, thereby releasing the contact with the slider and thereby closing the lid of the slider. And a stopper capable of sliding to a position where the slider is engaged with the slider. It is obtained by the fact that have been made with ability.

According to the present invention, in the lid opening / closing mechanism of the electronic device, when the slider is at a position where the slider is engaged with the lid portion, the slider prevents fine movement in a direction substantially orthogonal to the slidable direction. It is to be done.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

A lock mechanism according to the present invention is a mechanism for detachably fastening two members, a first member and a second member. In this embodiment, the lock mechanism according to the present invention is fastened so that the lid of the electronic device as the second member is closed to the main body of the electronic device as the first member. This is configured as a lid opening / closing mechanism of an electronic device.

As shown in FIG. 1, an electronic apparatus having a main body and a lid that can be opened and closed with respect to the main body includes a tape recorder and a tape player using a tape cassette as a recording medium, and a disk. There are disc recorders and disc players that use cartridges as recording media, and recording / reproducing devices that use memory cards (IC cards) as recording media. In this embodiment, the electronic device is a tape player using a tape cassette as a recording medium.

In this tape player, as shown in FIG. 4, the lid 2 is opened as shown by an arrow B in FIG. By closing the lid 2, the tape cassette 201 is prevented from dropping from the main body 1.

The tape cassette 201 has a pair of tape reels rotatably housed in a thin case-shaped cassette. One end side of the recording tape is fixed to one reel hub of the tape reel. This recording tape is wound around one tape reel, and the other end is fixed to a reel hub of the other tape reel. Engagement hole 20 at the center of the reel hub of each tape reel
Reference numerals 2 and 203 denote through holes 20 provided in the main surface of the cassette.
It faces the outside through 4,205. An opening is provided at the front edge of the cassette so that a portion of the recording tape extending between the tape reels faces outward. Also, positioning holes 206,
207, through holes 208 and 209 are provided in the cassette to allow the capstan shaft of the tape player to enter. Further, at the rear edge of the cassette, claw portions 210 and 211 that can be cut are provided to prevent so-called erroneous erasure.

The tape cassette mounting section provided in the main body 1 to which such a tape cassette is mounted is
It is constructed on a chassis housed in the main body 1 and has a lid 2
When the cover is closed, the cover 2 is covered with the cover 2, and when the cover 2 is opened, the cover 2 is exposed to the outside. The tape cassette mounting portion is provided with positioning pins 15 for positioning the cassette by fitting into positioning holes 206 and 207 of the cassette.
16. The tape cassette mounting portion is provided with engaging holes 202, 20 of the reel hub of each tape reel.
3 are provided with reel shafts 13 and 14. These reel shafts 13 and 14 are rotated by the driving force of a motor built in the main body 1. The tape cassette mounting portion has a capstan shaft 17 that fits into the through holes 208 and 209. This capstan shaft 17
The rotation operation is performed by the driving force of a motor built in the main body 1. Then, the tape cassette device mounted in the tape cassette mounting section is provided in the tape cassette device section.
A magnetic head 19 and a pinch roller 18 are provided at a position facing the front edge portion of the recording head 1. These magnetic heads 19
And the pinch roller 18 are attached to the support plate 20 and the tape cassette 201 attached to the tape cassette attaching section.
It is possible to advance and retreat.

When the tape cassette 201 is mounted on the tape cassette mounting portion, the positioning pins 15 and 16 are fitted into the positioning holes 206 and 207 of the cassette to position the cassette. Further, the reel shafts 13 and 14 are fitted in the engaging holes 202 and 203 of the reel hub of each tape reel correspondingly. When the reel shafts 13 and 14 are rotated by a motor, they rotate the fitted tape reel. The capstan shaft 17 is provided with a through hole 20.
8,209. At this time, a portion of the recording tape extending between the tape reels is located between the capstan shaft 17 and the pinch roller 18. When the pinch roller 18 and the magnetic head 19 are moved to the tape cassette side, the portion of the recording tape that passes between the tape reels is sandwiched by the capstan shaft 17 and the pinch roller 18 and is brought into contact with the magnetic head 19. State. In this state, when the capstan shaft 17 is rotated, the magnetic tape is fed, and the magnetic head is brought into sliding contact with the magnetic tape, so that the magnetic head records and reproduces information signals on the magnetic tape. Will be

In this tape player,
As shown in FIG. 1, the lid 2 has a rear edge side portion rotatably supported by the main body 1 via a support shaft 3. As shown by an arrow A in FIG. 1, the lid 2 is urged to rotate by a torsion coil spring 4 in which a coil is wound around a support shaft 3. When the lid 2 is in the closed state, as shown in FIG. 2, the front edge portion is held by the slider 7 constituting the lid opening / closing mechanism and fastened to the main body 1. .

As shown in FIG. 6, the slider 7 slidably supports the support plate 21 attached to the front edge of the main body 1 by screws 22 and 23 along the front edge of the main body 1. Have been. That is, the slider 7 has slits 25 and 27, and the support shafts 24 and 26 provided on the support plate 21 are inserted through the slits 25 and 27, so that the slider 7 can slide on the main body 1. Supported. The width of these slits 25 and 27 is
Is made approximately equal to the diameter.

The slider 7 is elastically biased in one direction by a tension coil spring 10 serving as a biasing member, as shown by an arrow D in FIG. This tension coil spring 1
Reference numeral 0 denotes a hook that has one end hooked on a hook piece 11 provided on the support plate 21 and the other end hooked on a hook piece 12 provided on the slider 7. The slider 7 has a hook-shaped lock claw 8 at an upper edge facing the front edge of the lid 2.

At the front edge of the lid 2, a locked piece 9 is provided on the lower surface facing the upper edge of the slider 7.
When the slider 7 is slid according to the biasing force of the tension coil spring 10 when the lid 2 is in the closed state, the locking claw 8 engages with the locked piece 9 to bring the lid 2 into the closed state. Hold. In this lid opening / closing mechanism, the slider 7 is slid by the tension coil spring 10 only by opening the lid 2, so that the lid 2 is held in the closed state.

The slider 7 is connected to the operation plate 5. The operation plate 5 is slidably mounted on the front surface of the main body 1. The operation plate 5 is formed in a U-shape by a flat plate portion along the front surface of the main body 1 and a pair of side plate portions along one front side and the other front side of the main body. . The operation plate 5 has a long hole 5 a in a flat plate portion along the front surface of the main body 1.
An oblong projection 6 provided on the front surface of the main body 1 faces outward from the elongated hole 5a. Operation buttons for executing various operations of the tape player can be provided on the protrusions 6.

As shown by an arrow F in FIG. 3, when the operation plate 5 is slid by a finger, and the slider 7 is slid against the urging force of the tension coil spring 10 following the slide of the operation plate 5, The engagement of the locking claw 8 with the locked piece 9 is released, and the lid 2 is in a state where the lid can be opened.

In this lid opening / closing mechanism, FIG.
As shown in FIG. 5, when the lid 2 is in the open state, a stopper lever 28 serving as a stopper for holding the slider 7 at a position slid against the biasing direction of the tension coil spring 10 is provided. Is provided.

That is, the stopper lever 28 has its base end rotatably supported by a support shaft 29 provided on the support plate 21, and has its tip end facing the end of the slider 7.
The slider 7 whose tip end side of the stopper lever 28 faces
Is the end on the side that becomes the front end when the slider 7 slides according to the biasing force of the tension coil spring 10. The stopper lever 28 is urged by a tension coil spring 35 in a direction to move the distal end side upward, that is, toward the lid 2, as shown by an arrow E in FIG. Extension coil spring 3
5 has one end hooked on a hook 37 provided on the support plate 21 and the other end hooked on a hook 36 provided on the stopper lever 28. This stopper lever 28
A slit 32 is provided on the distal end side, and a pivot 31 provided in the support plate 21 is inserted through the slit 32 to restrict a rotation range in a direction of moving the distal end side downward. Further, as shown in FIG. 5, the stopper lever 28 has a projection 39 on the base end side.
Is brought into contact with the contact piece 30 provided on the support plate 21, thereby restricting the rotation range in the direction in which the distal end side is moved upward.

On the lower side of the distal end of the stopper lever 28, that is, on the side opposite to the side facing the lid 2, an engaging projection 33 is provided so as to project toward the distal end of the stopper lever 28. ing. The stopper lever 28 is, as shown in FIG. 5, in a position where the engaging projection 33 is brought into contact with the end of the slider 7 and the slider 7 is released from the engagement of the locking claw 8 with the locked piece 9. As shown in FIG. 6, when the slider 7 is stopped and rotated against the urging force of the tension coil spring 35, the engaging projection 33 is moved in a direction substantially orthogonal to the direction in which the slider 7 can slide. , Slider 7
Is released, and the slider 7 can be slid to a position where the lock claw 8 is engaged with the locked piece 9.

As shown in FIG. 11, the width of the slit 27 indicated by the arrow L in FIG. 11 is slightly larger than the diameter of the support shaft 26 indicated by the arrow M in FIG. On the side that comes into contact with the stopper lever 28, a fine movement can be made in a direction substantially perpendicular to the slidable direction, that is, in a vertical direction. The distance in which the slider 7 can be finely moved in the vertical direction is determined by the arc-shaped portion (R portion) at the lower corner of the end of the slider 7.
34. (However, the distance in which the slider 7 can be finely moved in the vertical direction differs depending on the dynamic friction coefficient between the arc-shaped portion 34 and the engaging projection 33. Will be described later).

In this lid opening and closing mechanism, the slider 7 is slid against the urging force of the tension coil spring 10,
When the lock claw 8 is disengaged from the locked piece 9 and the lid 2 is opened by the urging force of the torsion coil spring 4, the stopper lever 28 applies the urging force of the tension coil spring 35 as shown in FIG. And the engaging projection 3
3 is made to face the end of the slider 7. In this state, when the slide operation on the slider 7 is released, the slider 7 attempts to return to the initial position according to the urging force of the tension coil spring 10, but in the position where the end portion is in contact with the engaging projection 33, Stopped. In this manner, when the end of the slider 7 is in contact with the engagement projection 33, the lock claw 8 is at a position where the engagement with the locked piece 9 is released.

When the lid 2 is closed,
As shown in FIG. 5, the locked piece 9 is stopped at the position where the slider 7 has its end portion abutted against the engagement projection 33, so that the stopper lever 2 does not come into contact with the locking claw 8.
8 comes into contact with the tip side. Then, as shown by an arrow C in FIG. 5, when the lid 2 is further closed, the locked piece 9 is closed.
Presses the distal end side of the stopper lever 28 and pushes the stopper lever 28 as shown by an arrow H in FIG.
The tension coil spring 35 is rotated against the urging force.
Then, the engaging projection 33 of the stopper lever 28 is
As shown in FIG.
The slider 7 can slide according to the urging force of the tension coil spring 10. At this time, the slider 7
As shown by an arrow K in FIG.
The locking claw 8 is engaged with the locked piece 9 as shown in FIG. Stopper lever 2
8 is held at a position where the engagement projection 33 is turned against the urging force of the tension coil spring 35 by engaging the engagement projection 33 with the lower edge of the slider 7.

In the lid opening / closing mechanism, when the lid 2 is closed, the pressing force of the locking piece 9 is reduced while the stopper lever 28 is being pressed and rotated by the locked piece 9. When the slider 7 is stopped, as shown in FIG. 9, the tip of the engaging projection 33 is brought into contact with the arc-shaped portion (R portion) 34 at the lower corner of the end of the slider 7, And the stopper lever 28 try to stop. At this time, the slider 7 is moved by the urging force of the tension coil spring 10 so that the portion on the side of the end facing the stopper lever 28 is perpendicular to the direction in which the slider 7 can slide, as shown by an arrow J in FIG. To move over the tip of the engagement projection 33,
It slides according to the urging force of the tension coil spring 10.

When the end of the slider 7 is in contact with the engaging projection 33, the force generated between the slider 7 and the engaging projection 33 of the stopper lever 28, as shown in FIG. This is the force N in the sliding direction of the slider 7 by the tension coil spring 10. The force N is the vertical component O applied by the slider 7 to the engagement projection 33 and the slider 7 is engaged by the engagement projection 3.
3 can be decomposed into a component force P that is going to slip. In addition,
This component force P is caused by the end portion 38 of the slider 7 being formed in an arc shape, and as shown by a broken line in FIG. 14, the end portion of the slider 7 has a straight line perpendicular to the sliding direction of the slider 7. If it is, it does not occur.

Then, when the engaging projection 33 moves downward of the end of the slider 7 and comes into contact with the arcuate portion 34, as shown in FIG. Component O of component N and component P
With respect to (5), the vertical component O applied by the slider 7 to the engagement projection 33 decreases, and the component P that the slider 7 tends to slide on the engagement projection 33 increases. Here, the engaging projection 3
Assuming that the dynamic friction coefficient between the tip end of the slider 3 and the arcuate portion 34 of the slider 7 is μ, when μO <P (1) is satisfied, the portion on the end portion 38 side of the slider 7 Is engaged with the engaging projection 33 while sliding with respect to the engaging projection 33.
, And slides over the engaging projection 33 by the urging force of the tension coil spring 10.

Here, assuming that the angle formed by the direction of the component force O with respect to the direction of the force N is θ, O = Ncosθ (2) P = Nsinθ (3) When these are substituted into the above (formula 1), μNcosθ <Nsinθ (4th formula) μcosθ <sinθ (6th formula) μ <(sinθ) / (cosθ) (7th formula) Equation 7) μ <tan θ (Equation 8) That is, when the angle θ formed by the direction of the component force O with respect to the direction of the force N becomes an angle that satisfies the above (Equation 8), the slider 7 starts to climb over the engagement protrusion 33.

In the state where the above (Equation 8) is satisfied, as shown in FIG. 16, the distance (height) from the lower end of the arcuate portion 34 of the slider 7 to the upper end of the engaging projection 33 is increased. Assuming that the distance is the distance Q, the finely movable distance of the slider 7 to the upper side must be equal to or longer than the distance Q. Here, assuming that the arc-shaped portion 34 is an arc having a radius r ₁ centered on the center R, the distance from the lower end of the arc-shaped portion 34 to the contact point between the arc-shaped portion 34 and the engaging projection 33 (high Distance) T
Is: T = r ₁ (1−sin θ) (Equation 9) Similarly, assuming that the distal end of the engagement projection 33 is an arc having a radius r ₂ centered on the center S, the contact between the engagement projection 33 and the arc-shaped portion 34 is formed from the upper end of the engagement projection 33. The distance (height distance) QT up to is: QT = r ₂ (1−sin θ) (Equation 10) Therefore, the distance Q is as follows: Q = (r ₁ + r ₂ ) (1−sin θ) (Equation 11) Here, if r ₁ = r ₂ = r, then Q = 2r (1−sin θ) (Equation 12)

The dynamic friction coefficient μ in the above (Equation 8) is 1.4 between iron and copper, and in this case, the angle θ at which the (Equation 8) holds is about 54 °. . This angle θ (= 54
) Is substituted into (Equation 12), and r (= r ₁ = r ₂ ) is set to 0.
If it is 5 mm, the distance Q will be about 0.2 mm. The dynamic friction coefficient μ in (Equation 8) is 0.2 between the cast iron and the soft iron, and in this case, the angle θ at which the (Equation 8) holds is about 11 °. This angle θ (= 11 °) is substituted into (Equation 12), and r (= r ₁ = r ₂ ) is 0.5 mm
Then, the distance Q is about 0.8 mm. The slider 7 and the stopper lever 28 can also be formed of stainless steel. In this case as well, the angle θ corresponding to the dynamic friction coefficient μ of stainless steel is obtained from (Equation 8). R ₁ , r ₂ , or (the twelfth
R in equation (Eq.) Is determined, and these (Eq. 11) or
By substituting into (Equation 12), the distance Q can be obtained.

As described above, in this lid opening / closing mechanism, when the lid 2 reaches a specific position during the lid closing operation, the lid closing operation is stopped. , The slider 7, the stopper lever 28, and the lid 2 are stopped at the respective positions, and the lock claw 8 is not completely engaged with the locked piece 9, that is, a so-called pseudo lock state may occur. Absent.

As shown in FIG. 12, the slit 27 provided in the slider 7 adjusts the width of the portion where the support shaft 26 is inserted when the lid 2 is locked in the closed state. And the width of the portion through which the support shaft 26 is inserted when the lid 2 is openable is formed as a width L larger than the diameter of the support shaft 26. Good. In this case, the slider 7 is
In a state in which the cover can be opened, fine movement in a direction substantially orthogonal to the slidable direction is possible as in the above-described embodiment. In this case, when the slider 7 is at the position where the lid 2 is locked in the closed state, fine movement in a direction substantially orthogonal to the slidable direction is prevented. Therefore, in this case, the main body 1 of the lid 2 held in the closed state is
The play in the contact and separation directions with respect to is prevented.

[0046]

As described above, the lock mechanism according to the present invention is slidably disposed on the first member, is elastically biased in one direction, and is slid by the biasing force in the second member. A slider that locks the second member with respect to the first member by engaging with the first member; and a slider that is movably disposed on the first member and abuts on the slider to move the slider to the second member. The slider is stopped at the position where the engagement is released, and is moved in a direction substantially perpendicular to the slidable direction of the slider to release the contact with the slider and move to a position where the slider is engaged with the second member. And a stopper capable of sliding.

The slider is capable of fine movement in a direction substantially perpendicular to the slidable direction, at least on the side in contact with the stopper. Therefore, when a pseudo lock state occurs in which the stopper and the slider stop just before the stopper releases the contact with the slider, the slider slightly moves in a direction to escape from the stopper, and the pseudo lock state is generated. Is prevented from occurring.

That is, the present invention relates to a lock mechanism for detachably fastening two members so that a pseudo lock state in which the two members stop in an incompletely fastened state does not occur, and a lock mechanism for this purpose. An object of the present invention is to provide a lid opening / closing mechanism of an electronic device in which a lock mechanism is applied for fastening a main body portion and a lid portion of the electronic device.

[Brief description of the drawings]

FIG. 1 is a perspective view, partially broken away, showing the configuration of an electronic device to which a lock mechanism and a lid opening / closing mechanism of an electronic device according to the present invention are applied.

FIG. 2 is a perspective view, partially broken away, showing a configuration of a main part of the electronic device.

FIG. 3 is a perspective view, partially cut away, showing a main part of the electronic device in a state where a lock mechanism is operated.

FIG. 4 is a perspective view showing a state in which a lid is opened in the electronic device.

FIG. 5 is a front view showing a configuration of a main part of the lock mechanism and a lid opening / closing mechanism of the electronic apparatus.

FIG. 6 is a front view showing a state where the lock mechanism and the lid opening / closing mechanism of the electronic device are operated.

FIG. 7 is a main part front view showing a state before the lock mechanism and the lid opening / closing mechanism of the electronic device are operated.

FIG. 8 is a front view of an essential part showing a state where an operation is started in the lock mechanism and the lid opening / closing mechanism of the electronic apparatus.

FIG. 9 is a main part front view showing a state where the operation is being continued in the lock mechanism and the lid opening / closing mechanism of the electronic apparatus.

FIG. 10 is a front view of an essential part showing a state where the operation is completed in the lock mechanism and the lid opening and closing mechanism of the electronic apparatus.

FIG. 11 is a front view of a main part showing a configuration of a main part of a slider of the lock mechanism and a lid opening / closing mechanism of the electronic apparatus.

FIG. 12 is a main part front view showing another example of the main part configuration of the slider of the lock mechanism and the lid opening / closing mechanism of the electronic apparatus.

FIG. 13 is an enlarged front view of a main part showing a relationship between an initial state of a slider and a stopper in the lock mechanism and the lid opening / closing mechanism of the electronic apparatus.

FIG. 14 is an enlarged front view of a main part showing a relationship when operation of a slider and a stopper in the lock mechanism and the lid opening / closing mechanism of the electronic apparatus is started.

FIG. 15 is an enlarged front view of a main part showing a relationship during operation of a slider and a stopper in the lock mechanism and the lid opening and closing mechanism of the electronic apparatus.

FIG. 16 is an enlarged front view of a main part showing the relationship between the slider and the stopper in the lock mechanism and the lid opening / closing mechanism of the electronic device in the middle of the operation and the conditions for establishing the present invention.

FIG. 17 is a perspective view showing a configuration of an electronic device to which a conventional lock mechanism and a lid opening / closing mechanism of the electronic device are applied.

FIG. 18 is a front view showing a configuration of a main part of a conventional lock mechanism and a lid opening / closing mechanism of an electronic device.

[Explanation of symbols]

1 body, 2 lid, 7 slider, 10 tension coil spring, 28 stopper

Claims (4)

[Claims] A first member which is slidably disposed on the first member, is elastically biased in one direction by an urging member, and is engaged with the second member when slid by the urging force of the urging member; A slider for locking the second member to the first member; and a slider movably disposed on the first member and abutting the slider to move the slider to the second member. Is stopped at the position where the engagement of the slider is released, and the slider is moved in a direction substantially perpendicular to the slidable direction of the slider, so that the slider is released from contact with the slider and the slider is moved to the second member. A stopper capable of sliding to an engaging position, wherein the slider is capable of fine movement in a direction substantially orthogonal to a slidable direction at least on a side in contact with the stopper. It and made the lock mechanism that is. 2. The apparatus according to claim 1, wherein when the slider is at a position where the slider is engaged with the second member, fine movement in a direction substantially orthogonal to a slidable direction is prevented.
The locking mechanism as described. 3. A cover for the electronic device, slidably disposed on a main body of the electronic device, elastically biased in one direction by an urging member, and slid by the urging force of the urging member. A slider which engages with the main body and locks the lid in a closed state with respect to the main body; and a slider which is movably disposed on the main body and which comes into contact with the slider to bring the slider into contact with the lid. The slider is stopped at a position where the engagement with the slider is released, and is moved in a direction substantially perpendicular to the slidable direction of the slider, so that the slider comes into contact with the slider and the lid body of the slider is released. A stopper capable of sliding to a position where the slider can be engaged with the slider. The slider is capable of fine movement in a direction substantially orthogonal to a slidable direction at least on a side in contact with the stopper. Cover opening and closing mechanism of the electronic apparatus has been made and that have been made. 4. The electronic apparatus according to claim 3, wherein the slider is prevented from fine movement in a direction substantially perpendicular to a slidable direction when the slider is at a position where the slider is engaged with the lid. Lid opening and closing mechanism.