JPH09273540A - Cover opening/closing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve space use efficiency inside portable electronic equipment, reduce size and number of items, simplify a structure, and improve operability such as exchange of parts in a cover opening/closing structure of a portable electronic apparatus such as a personal handy phone. SOLUTION: A cover is rotatably journalled to a body 13 in an opening/ closing direction. In such a cover opening/closing structure, a guide groove 23 having an upward tapered surface and a downward tapered surface is formed around a rotation center in the opening/closing direction on one of the body 13 or the cover. A sliding projection is formed on the other, which slides with the upward and downward tapered surfaces while being guided by the guide groove 23. Force in both opening and closing directions is applied due to reaction force generated on the tapered surfaces by the sliding of the projection with the surfaces of the guide groove 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover opening / closing structure for a portable electronic device such as a mobile phone.

[0002]

2. Description of the Related Art Some portable telephones or those having keys for operating an electronic notebook or the like have an opening / closing cover for erroneous operation or protection of the keys. For example, in mobile phones, the cover that covers the dial keys is foldable,
There is a type where the cover is expanded with respect to the main body during a call.

14 to 16, a conventional folding type portable telephone will be schematically described.

The foldable mobile phone comprises a dial key 3,
From the folded state in which the cover 2 is closed with respect to the main body 1 including the display unit 4, the receiver and the like, the main body 1 is rotatably supported in the developing direction via the support shafts 8 and 9. The support shaft 8
A coiled spring 7 is provided around the axis of, and one wire end of the spring 7 is locked to the main body 1, the other wire end is locked to the cover 2, and the spring 7 is The body 1
Is biased in the opening direction.

Further, in the conventional cover opening / closing structure, when assembling, the front case 5 and the cover 2 are aligned with each other, the support shafts 8 and 9 are inserted, and the support shaft 8 is fitted with the spring 7. , Then the front case 5
And the rear case 6 were adhered to each other.

[0006]

In the case of the conventional folding type mobile phone, the spring 7 for urging the cover 2 in the opening direction is used with respect to the main body 1, and the housing of the main body 1 is The front case 5 includes a front case 5 and a rear case 6. The front case 5 is formed with a storage portion 10 for storing the spring 7 and the support shafts 8 and 9.
Therefore, the wiring board 11 mounted inside the main body 1 cannot be extended to the inner end of the main body 1. Therefore, the internal space of the main body 1 cannot be effectively used, which is an obstacle to downsizing the main body 1.

Further, in the above-mentioned conventional cover opening / closing structure, assembly is complicated, and further, when the cover 2 is damaged, or when the spring 7 deteriorates and the opening / closing of the cover 2 is disturbed, parts are For replacement, the main body 1 had to be disassembled, and the work was troublesome and was a large-scale work.

In view of such circumstances, the present invention intends to improve the space utilization rate inside, to reduce the size, reduce the number of parts, simplify the structure, and improve the workability of parts replacement and the like. Is.

[0009]

SUMMARY OF THE INVENTION The present invention provides a cover opening / closing structure in which a cover is pivotally supported in the opening / closing direction with respect to a main body. A cover having a guide groove formed by connecting an ascending slope and a descending slope along the opening and closing direction centering on the center, and a sliding protrusion on the other that slides on the ascending slope and the descending slope guided by the guide groove. The present invention relates to an opening / closing structure and a cover opening / closing structure having a plurality of tops formed by an upslope and a downslope, and a cover opening / closing with a handle on each of the main body side and the cover side along the joining line between the main body and the cover. It relates to the structure, and to a cover opening / closing structure in which a locking recess is formed on one side of each of the surfaces where the main body and the cover overlap, and a locking projection is formed on the other side, and a spindle pin is projected on either one of the main body and the cover. Installed and supported on either side Projecting the hole, the body and the cover is rotatably coupled to the fitting between the pivot pin and the pivot hole,
The present invention relates to a cover opening / closing structure in which a taper is formed at the tip of the support shaft pin to facilitate detachment of the support shaft pin from the support shaft hole, and further to a cover opening / closing structure in which a rib is formed on the inner surface of the cover, The sliding protrusion slides on the upslope and downslope of the guide groove, and the reaction force generated by the slope causes the cover opening direction,
A force in the closing direction acts.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a cover opening / closing structure according to the present invention applied to a mobile phone will be described below with reference to the drawings.

1 to 9, a mobile phone 12 includes a main body 13 having a dial key 3 and a receiver (not shown).
The main body 13 has a housing in which a front case 14 and a rear case 15 are combined. A convex portion 16 is formed at a lower end portion of the front case 14, and a pair of left and right support shaft pins 17, 17 are provided on both left and right end surfaces of the convex portion 16, and a transmitter 18 is provided on the convex portion 16. Is provided.

A concave portion 20 is formed at a lower end portion of the cover 19 which is openably and closably provided on the main body 13 so as not to interfere with the convex portion 16, and the convex portion 16 is fitted into the concave portion 20. Support shaft holes 21 and 21 are bored in a surface of the cover 19 facing the recess 20, and a sliding protrusion 22 (see FIG. 7) is projected at a position contacting the support shaft holes 21 and 21. The support shaft holes 21 and 21 are made to correspond to the support shaft pins 17 and 17, so that the support shaft pins 17 and 17 and the support shaft holes 21 and 21 can be fitted to each other. The cover 19 is formed by fitting the support shaft pins 17, 17 into the support shaft holes 21, 21.
It is pivotally supported about the main body 13 so as to be rotatable in a developing direction from a closed folding position with respect to the main body 13.

The support shaft pin 1 is provided on both end surfaces of the convex portion 16.
An arcuate guide groove 23 centering on 7, 17 is formed. The guide groove 23 has displacement lines a, b, c, from the a end on the one end side of the arc to the e end on the other end side of the arc, as shown in the cross-section in which the bottom shape is schematically developed in FIG. d and e
In each of the above, the flat surface 25 starts from the displacement line b, the ascending slope 26, the displacement line c as the apex, the descending slope 27 continuous with the ascending slope 26, and the displacement line d further connects to the descending slope 27. Steep upslope 28
Are formed in a row. The a end on one end side of the arc is a vertical wall 24, and the section of the flat surface 25 up to the vertical wall 24 and the displacement line b blocks the movement of the sliding protrusion 22 provided on the cover 19 side. It is a stopper.

At least one of the main body 13 and the cover 19 is made of an elastic material, for example, a synthetic resin material. As described above, the cover 19 is provided with a support hole 21, as shown in FIG. Sliding protrusions 22 are provided so as to project inwardly in the vicinity of each of 21.

The sliding protrusion 22 is formed on the front case 1.
It fits into the guide groove 23 formed on the 4 side and slides. That is, as the cover 19 is opened and closed, the sliding protrusion 22 can slide on the flat surface 25, the upslope 26, the downslope 27, and the upslope 28 of the guide groove 23 in this order. In order to make the operation during sliding smooth and effective, the elasticity and lubricating action of the synthetic resin material are utilized.

The side wall of the front case 14 is provided with a handhold 32 along the joining line with the cover 19, and a recess is provided at a position close to the handhold 32 and a surface overlapping the inner side surface of the cover 19. 31 is formed. On the outer side surface of the cover 19, a handle 30 which is paired with the handle 32 and forms one recess is provided. A locking projection 33 is provided on the inner surface of the cover 19 at a position corresponding to the back side of the handle 30, and the locking projection 33 can be inserted into and removed from the locking recess 31 by utilizing the elasticity of the cover 19. To do. Ribs 34 and 35 are formed on the back surface of the cover 19 to reinforce the strength of the cover 19 and increase its rigidity.

The operation of this embodiment will be described with reference to FIGS. 11 and 12.

In the folded state in which the cover 19 is closed with respect to the main body 13, the locking projection 33 is engaged with the locking recess 3.
The cover 19 is fitted into the cover 1, and an appropriate engaging force is generated by the elasticity of the cover 19 to maintain the folded state of the cover 19.
Further, in the folded state, the sliding protrusion 2 on the cover 19 side.
2 is in contact with the vertical wall 24 of the guide groove 23 on the main body 13 side, and rests on the flat surface 25.

Next, when a finger is put on the handgrip 30 during a call and the cover 19 is rotated in the developing direction by a required force exceeding the engaging force between the locking protrusion 33 and the locking recess 31, the cover 19 is rotated. The sliding projection 22 on the 19 side moves to the upward slope 26 of the guide groove 23 on the main body 13 side. While the sliding protrusion 22 slides on the upslope 26 (range p in FIG. 11), an upward gradient and an elastic force of the cover 19 generate a component force in the direction of descending the upslope 26. 22 to cover 19
The repulsive force in the direction for closing the sliding force acts to push the sliding protrusion 22 back to the flat surface 25. That is, a rotational force that closes the cover 19 to the original position acts to prevent the cover 19 from being unintentionally opened.

Next, an opening force in the developing direction is further applied to the cover 19 so that the sliding protrusion 22 crosses the upward slope 26, and the sliding protrusion 22 moves to the downward slope 27 beyond the displacement line c. . In the range in which the sliding protrusion 22 slides while being guided by the downward slope 27 (the range of q in FIG. 11), the downward slope and the component force in the direction of descending the downward slope 27 toward the line d due to the elastic force of the cover 19. Occurs and the sliding protrusion 22
A repulsive force acts in the direction to open the cover 19. That is, a rotational force in the developing direction acts on the cover 19, and the cover 19 can be easily deployed.

When the sliding protrusion 22 reaches the displacement line d and is further rotated by applying a force to open the cover 19 in the developing direction, the sliding protrusion 22 causes the sliding protrusion 22 to have the steep upslope. 28, the action due to the ascending slope and the flexibility in the closing direction act on the sliding protrusion 22 again. Then, the sliding projection 22 is pushed back to the displacement line d, the cover 19 is stopped at the displacement line d, and the cover 19 is held in a state of being developed at a constant angle.

When the call is ended and the cover 19 is closed again, the sliding protrusions 22 have the descending slopes 28 and the ascending slopes 2.
7 and 26 and the flat surface 25 are sequentially moved backward, and the flat surface 25,
It is held by a stopper portion composed of the vertical surface 24, and when the cover 19 is pushed further, the locking projection 33 engages with the locking recess 31 and the cover 19 is closed.

By further forming a taper 38 on the lower surface side of the support shaft pins 17, 17, it is possible to prevent damage to the cover 19. For example, when the mobile phone 12 is dropped with the cover 19 open, if an excessive load acts on the cover 19 in the developing direction, the support shaft holes 21,
21 is a front case 1 as shown by an arrow in FIG.
4, a force is generated in the separating direction, but as described above, when the taper 38 is formed on the lower surface side of the support shaft pins 17, 17, the support shaft holes 21, 21 slip off along the taper 38. ,
Does not lead to damage.

It is conceivable that the locking recess 31 is worn and the restoring force of the cover 19 in the closing direction is weakened. However, the locking projection 33 fits into the locking recess 31 and the cover 19 is attached to the main body 13. Since it is locked, the closing holding force of the cover 19 is not a problem.

FIG. 13 shows an example of modification of the guide groove 23, in which the shape of the left and right grooves is modified so that the expansion and holding position of the cover 19 is two steps. One guide groove 23 'is formed with a triangular projection 29 at a position beyond the above-mentioned displacement line c, and by forming the projection 29, the cover 19 causes the cover 19 to rise up and the guide groove. End face 2 of 23
The expanded position is held at two positions of 8 and. Needless to say, the cover 19 is held at the two deployed positions even if the guide grooves 23 'are provided on both the left and right sides.

In the above embodiment, the main body 13
Side is formed with a guide groove 23, and the cover 19 side is provided with a sliding protrusion 22.
However, on the contrary, a sliding protrusion is provided on the main body 13 side, and the cover 1
A guide groove may be formed on the 9 side. Further, the locking recess 3
1, the locking projections 33 are provided on the side surfaces of the front case 14 and the cover 19, respectively, but may be provided along the joining line between the front end of the cover 19 and the front case 14. As shown in FIG. 10, a locking recess 36 is formed on the surface of the front case 14 that overlaps with the front end surface of the cover 19, a locking projection 37 is formed on the cover 19, and the cover 19 is formed at the front end position of the cover 19. You may make it lock to 19. In this case, if the locking projection 37 is formed at the center of the cover 19 in the width direction, the locking projection 37 may be provided at one place. Also, the above procedure 3
0, the handle 32 may be a convex portion instead of a concave portion. Furthermore, the locking projection may be formed on the front case 14 side and the locking recess may be formed on the cover 19 side.

[0027]

As described above, according to the present invention, it can be suitably applied to an opening / closing structure such as a main body and a cover of a foldable mobile phone, and as a member for opening / closing the cover, the main body or the cover. Since only one guide groove is provided on one side, and only the sliding protrusion is provided on the other side, the number of members is greatly reduced, and the internal space of the main body can be used effectively, enabling reduction in size and weight and cost reduction. It is possible to reduce the amount of damage. Furthermore, by forming a taper on the support shaft pin, the cover can be easily removed, damage due to dropping etc. can be prevented, and moreover, the expansion and holding position of the cover can be set to multiple positions, so the usability is improved. It has an excellent effect that

[Brief description of drawings]

FIG. 1 is a front view of a mobile phone having a cover opening / closing structure according to the present invention.

FIG. 2 is a side view of the same mobile phone.

FIG. 3 is a front view of the same mobile phone with a cover removed.

FIG. 4 is a side view of the same mobile phone with a cover removed.

FIG. 5 is an explanatory diagram of a guide groove in the embodiment of the present invention.

FIG. 6 is an inner view of the cover in the same embodiment.

FIG. 7 is a cross-sectional view of the cover in the same embodiment.

8 is a view taken along the line AA of FIG.

FIG. 9 is a view taken along the line CC of FIG.

FIG. 10 is a view corresponding to the arrow BB in FIG. 1.

FIG. 11 is a side view showing a state where the cover is expanded in the same embodiment.

FIG. 12 is an operation explanatory view showing the relationship between the sliding protrusion and the guide groove in the present embodiment.

FIG. 13 is an operation explanatory view showing a relationship between a sliding protrusion and a guide groove in another embodiment.

FIG. 14 is a front view of a mobile phone having a conventional cover opening / closing structure.

FIG. 15 is a side view of a mobile phone having a conventional cover opening / closing structure.

FIG. 16 is an enlarged cutaway view of a D part of FIG.

[Explanation of symbols]

 13 main body 14 front case 15 rear case 16 convex portion 17 support shaft pin 19 cover 21 support shaft hole 22 sliding protrusion 23 guide groove 30 hand grip 31 locking recess 32 hand grip 33 locking protrusion 34 rib 35 rib 36 locking recess 37 engagement Stop projection 38 Taper

Claims (6)

[Claims] 1. A cover opening / closing structure in which a cover is rotatably supported in the opening / closing direction with respect to a main body, wherein either the main body or the cover is provided with a center of rotation as a center along the opening / closing direction. A cover opening / closing structure is characterized in that a guide groove is formed by connecting an upslope and a downslope to each other, and a sliding protrusion is formed on the other to slide on the upslope and the downslope by being guided by the guide groove. 2. The cover opening / closing structure according to claim 1, wherein the cover opening / closing structure has a plurality of tops formed by an upslope and a downslope. 3. The cover opening / closing structure according to claim 1, wherein a handle is formed on each of the main body side and the cover side along a joining line between the main body and the cover. 4. The locking recess is formed on one side of each of the surfaces where the main body and the cover overlap, and the locking projection is formed on the other side.
Cover opening and closing structure. 5. A spindle pin is projected on one of the body and the cover, and a spindle hole is projected on the other of the body, and the body and the cover are rotated by fitting the spindle pin and the spindle hole. 2. The cover opening / closing structure according to claim 1, wherein the cover pin is freely coupled and a taper is formed at a tip of the support shaft pin to facilitate detachment of the support shaft pin from the support shaft hole. 6. A rib formed on the inner surface of the cover.
Cover opening and closing structure.