JP2002185158A - Hinge unit for opening/closing cover provided with spherical body and - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce friction resistance and to open or close a cover smoothly by appropriately providing a spherical body in a hinge unit that can freely hold a folding type covering device such as a mobile phone on a device body in the state where the cover is opened or closed. SOLUTION: When a movable disk 5 fitted in a cover hinge cylinder 2a is turned by opening a cover 2 with respect to a fixed disk 4 fitted in a main body hinge cylinder fixed to a device body 1, a spherical body 8f fitted in an opening 4e to be fitted is rolled and separated, against the resilient force of a spring 7, from the state fitted in a predetermined depression 6 formed in the movable disk 5. Further, the spherical body 8f is rolled while it is in contact with the movable abutting end surface 5b and is rolled and fitted in the predetermined depression 6 by the resilient force of the spring 7. In this manner, the cover 2 is freely transferred from the closed state to the open state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a folding computer,
In a folding device such as a personal computer, a mobile phone, and a word processor, a cover pivotally attached to the device body so as to be freely opened and closed can be maintained at a closed position and at an arbitrary opening angle. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for opening / closing and holding which can release the holding state with an appropriate force, and particularly to a hinge device for opening / closing and holding a cover of a sphere equipped so that the opening / closing operation of the cover can be smoothly performed by reducing frictional resistance. About.

[0002]

2. Description of the Related Art In portable telephones and the like described above, it is possible to prevent a cover that closes a device body from being unintentionally opened or from being closed during use. However, when using conventional locking means using locking claws or magnets, satisfactory results are not obtained in various aspects such as design, mounting restrictions, high cost and operability. Therefore, in order to resolve the defect, Japanese Patent Laid-Open No.
A proposal described in Japanese Patent Publication No. 11831 is made.

[0003] The above-mentioned proposal has a configuration as described below with reference to Figs. That is, FIG.
As can be understood from FIG. 6 and FIG. 6, the device main body 1 and the cover 2 are pivotally connected by a hinge portion 3 so as to be freely opened and closed by an arbitrary opening angle α 角度, and the hinge portion 3 is fixed to the device main body 1. A cylinder 1a and a cover hinge cylinder 2 fixed to the cover 2
a, and the main body contact end surface 1b of the main body hinge tube 1a and the cover contact end surface 2b of the cover hinge tube 2a are slidable when opening and closing the cover 2.

A fixed disk 4 is fitted in the main body hinge tube 1a so as to be slidable in the axial direction in a rotation stopped state. For this purpose, a guide rib 1c provided on the inner peripheral surface of the main body hinge tube 1a is fitted. The guide groove 4a of the fixed disk 4 is engaged. On the other hand, the movable disk 5 is also fitted into the cover hinge cylinder 2a in a rotation stopped state. For this reason, in the illustrated example, the rib 5a formed on the end face of the movable disk 5 is inserted into the groove 2c in the inner depth of the cover hinge cylinder 2a. Are engaged.

Further, in the conventional example, one of the fixed butted end face 4b of the fixed disk 4 and the movable butted end face 5b of the movable disk 5, in the illustrated example, is fixed to the fixed butted end face 4b in FIGS. As can be understood from FIG. 8 and FIG. 8, a plurality of (three) engaging recesses 6 are provided at predetermined circumferential angular positions N1, N2, N3 (positions determined by the opening angle α ゜ of the cover 2). As shown in FIGS. 7 (A), 7 (C) and 8 in the illustrated example, the engaging recess 6 is engaged with the engaging recess 6 by an elastic force based on the ridge 7 by a coil spring in FIG. A plurality of (two) engaging projections 8 are provided at predetermined circumferential angular positions P1 and P2.
2 and protrudes from the movable butting end face 5b.

[0008] As shown in FIG. 8, the protrusion 7 is housed in a storage cavity 4 c which is located on the opposite side of the fixed butted end face 4 b of the fixed disk 4 and is opened outward. The threaded rod 9 inserted from the outside of the main body hinge tube 1a penetrates the fixed disk 4 and the movable disk 5 from the ridge 7 so that the screw tip 9a is screwed to the bottom 2d of the cover hinge tube 2a. . For this reason, the ridge 7 presses the fixed disk 4 toward the movable disk 5 by the elastic force, whereby the engagement projection 8 is engaged with the engagement recess 6, so that the fixed butted end face 4 b is movable butted. It comes into pressure contact with the end face 5b.

Therefore, as can be understood from FIG. 8, when the cover 2 is opened and the movable disk 5 is rotated together with the cover hinge cylinder 2a, the movable butted end face 5
7E, the engaging projection 8 protrudes from the engaging recess 6 in the circumferential direction as shown in FIG.
The fixed disk 4 moves to the left in FIG. 8 against the resilience of FIG. 8, and the tip of the engaging projection 8 slides on the fixed butted end face 4b to rotate in the circumferential direction. Become.

For this reason, in FIG. 7, when the engaging projection 8 at the circumferential angular positions P1 and P2 of the movable disk 5 is in the closed state of the cover 2, the circumferential angular position N1 and
When the cover 2 is opened by the opening angle α ゜, the pair of engaging projections 8 are engaged with the circumferential angles N3 and N1, respectively. The engagement can be switched to the engagement recess 6 at the position.

[0009] With the above-described configuration, in the case of the related art, compared with locking by a locking claw or a magnet,
When the cover 2 is closed and opened with respect to the device body 1,
It is possible to prevent unintentional rotation, and it is possible to easily open and close the cover 2 as needed, thereby greatly improving the defects of the above-mentioned conventional cases.

As described above, when the conventional hinge device is used, a desired effect can be obtained.
(A) and (B), in this case, first, the opening angle α 角度 of the cover 2 with respect to the device body 1 is 18 degrees.
0 ° or less, and the pair of engaging projections 8
Is provided on the diameter line, the opening angle α ゜ of 180 ° is the maximum. For this reason, the opening angle of the cover cannot be increased to a wider angle than this,
Therefore, there is a problem that it is not possible to satisfy the demand for the wide-angle opening / closing of the cover. As understood from the above description, when the cover 2 is opened and closed, the tapered surface of the engagement projection 8 comes into surface contact with the slope of the engagement recess 6 as shown in FIG. The tapered surface of the projection 8 comes into surface contact with the fixed butted end surface 4b,
In addition, at this time, since elasticity due to the ridge 7 is added, a considerably large frictional resistance is received, so that it is difficult to open and close the cover lightly.

In order to solve the above-mentioned defects, the present applicant has already disclosed in Japanese Patent Application No. Hei 9-139255 the above-mentioned plurality of engagement recesses and engagement protrusions, as shown in FIG.
As shown in (B), the engagement recesses and the engagement protrusions are not set at a required circumferential angle position having the same diameter from the rotation axis, but each engagement recess and each engagement protrusion. By setting the convex portions at required circumferential angle positions having different diameters from each other, the opening angle of the cover with respect to the device main body can be set to a large angle from 180 ° to 360 ° as well as the same angle as in the conventional example. We proposed something that could handle the requirement of setting the angle.

The above proposal will be described below with reference to FIGS. 9 to 14. The same reference numerals are used for the same components as those in the conventional example, and the following components have the same contents. . That is, first, FIG.
11 to FIG. 11, a main body hinge tube 1a fixed to the device main body 1 and a cover contact end peripheral edge 2 slidably in contact with the main body contact end edge 1b of the main body hinge tube 1a.
b, a cover hinge cylinder 2a fixed to the cover 2 is provided.

Further, a fixed disk 4 is fitted inside the main body hinge tube 1a in a rotation stopped state, and a movable disk 5 that rotates together with the cover hinge tube 2a in the rotation stopped state is fitted inside. Have been. The fixed butted end face 4b of the fixed disk 4 and the movable disk 5
In one of the movable butting end faces 5b, a plurality of engagement recesses 6 are provided at predetermined circumferential angle positions, and the other is provided with a plurality of engagement recesses 6 corresponding to the engagement recesses 6 described above. A plurality of engagement projections 8 are provided so as to engage with each other based on the elasticity of the projections 7.

When the cover 2 is closed and opened, the engagement state of the engagement projection 8 with the engagement recess 6 can be switched to the engagement recess 6 at another position. I have.
Further, similarly to the conventional example, in the drawing, 1c is a guide rib, 2c is a groove, 4a is a guide groove, and 4c is a projection 7.
5c is a rib, 9 is a screw rod, 9a
Is the same as the tip of the screw portion, and S is the rotation axis of the fixed disk 4 and the movable disk 5.

Further, according to the above proposal, in the conventional hinge device, each of the plurality of engaging recesses 6 and the engaging projections 8 is provided on one of the fixed butting end face 4b and the movable butting end face 5b. In addition, as shown in FIG. 9, it is characterized in that it is set at a required circumferential angle position having different diameters from the rotation axis S.

That is, as shown in FIGS. 9 and 10, one of the fixed butted end face 4b and the movable butted end face 5b, in the illustrated example, the fixed butted end face 4b
At the required circumferential angle position N4 on the one diameter line and having mutually different diameters (large radius R and small radius r), the first engagement recessed pair 6a, 6b is provided, and Required circumferential angle position N5 on one diameter line, which is also different in diameter
, A second pair of engagement recesses 6c, 6d is provided.

On the other of the fixed butted end face 4b and the movable butted end face 5b, the fixed butted end face 5b in the illustrated example has a required circumference that is on one diameter line and has mutually different diameters (large radius R and small radius r). At the angular position N4,
A pair of engagement projections 8a, 8b is provided to protrude. Therefore, with the above configuration, as understood with reference to FIGS. 9F and 10, when the cover 2 is now closed with respect to the device body 1, The pair of engaging projections 8a, 8b is the first pair of engaging recesses 6a,
6b, the fixed butted end face 4b is pressed against the movable butted end face 5b by the elasticity of the ridge 7 as shown in the above-described conventional example, whereby the first engagement recess is formed. For the pair 6a, 6b, the engagement convex portion pair 8
a and 8b are engaged and held, respectively. As a result, even if an external force is applied to the cover 2, the cover 2 does not open unintentionally.

Next, when the cover 2 is rotated in the opening direction, the pair of engaging projections 8a and 8b are moved to the first pair of engaging recesses 6a and 6b.
b, escapes as shown in the conventional example against the elasticity of the ridge 7, and rotates while sliding on the fixed butted end face 4b. At this time, the first engagement recessed portion pair 6a, 6b is disposed at a position different in diameter from the second engagement projection portion pair 8a, 8b. One of the pair of projections 8a
Is not engaged with one of the second engagement recess pair 6d or the first engagement recess pair 6b, and the other engagement projection pair 8b is not engaged with the second engagement recess pair. There is no possibility of engagement with the other pair 6c or the other 6a of the first engagement recessed pair.

For this reason, as shown in FIG. 9 (F), the above-mentioned pair of engaging projections 8a, 8b is rotated from the circumferential angle position N4 by about 225 ° as the opening angle α ° in the illustrated example.
5, the fixed disk 4 is moved back to the right in FIG. 2 by the restoring force of the ridge 7, and the engagement projections 8a, 8b are engaged with the engagement recesses as shown by oblique lines. As a result, the cover 2 is engaged with the pair 6c, 6d, thereby maintaining the wide-angle opening of the cover 2. Here, reference numerals 4d and 5c denote shaft holes of the fixed disk 4 and the movable disk 5, respectively, through which the screw rod 9 passes.

Here, the engaging projection 8 has tapered tapered surfaces 8c and 8d formed on both sides in the circumferential direction from the fixed butted end surface 4b or the movable butted end surface 5b, as in the conventional example. On the other hand, the engaging recess 6 into which the engaging protrusion 8 engages is formed as a truncated pyramid-shaped cavity 6e corresponding thereto. I have.

In the prior application filed by the present applicant, the engaging projection 8 and the engaging recess 6 other than those described above are also described, which are described below with reference to FIGS. I do. That is, instead of the truncated pyramid-shaped engaging convex portion 8 of the previous example, the spherical portion 8 as shown in FIGS.
In the illustrated example, the engaging projection 8 having a projection e protrudes from the fixed butted end face 4b of the fixed disk 4, and in this case, as shown in FIG.
As clearly shown in FIG. 3, it is desirable that the projection length d of the spherical portion 8e be formed smaller than the radius D / 2 of the virtual sphere B.

Further, when forming the engaging projection 8, the spherical portion 8e may be expanded from the fixed butted end face 4b integrally with the fixed disk 4 as shown in FIG. However, as shown in FIG. 13B, a separate spherical body 8f is used, and this is rotatably fitted into the fitting receiving port 4e of the fixed disk 4 in a retaining state, so that the spherical portion of the spherical body 8f is formed. It is also described that 8e is engaged with an engaging recess 6 as a spherical space 5d formed in the movable butted end face 5b of the movable disk 5.

As shown in FIGS. 12 (C) and 12 (D), the engaging recess 6 is provided on the movable butting end face 5b of the movable disk 5 as shown in FIG. It is formed as a hollow space 5d. As understood from the previous description of FIG. 7, if the movable disk 5 is rotated when the cover 2 is opened and closed, the spherical space 5d as the engagement recess 6 in the movable butted end face 5b.
Is disengaged from the spherical portion 8e and is pressed against the spherical portion 8e by the movable butting end face 5b against the elasticity of the ridge 7 so that the fixed disk 4 is pushed leftward in FIG. Become.

Further, the opening of the cover 2 is substantially the same as the case of FIG. 9, and the first engagement recessed pair 6a, 6b of the movable disk 5 is
When the cover 2 is engaged with the pair of engaging projections 8a and 8b, the pair of engaging recesses 6c and 6d engage with the pair of engaging projections 8a and 8b. The cover 2 is opened at a wide angle to maintain the open state.

Here, FIG. 12 (F) and FIG.
Reference numerals 10a and 10b denote a concave arc guideway for a long diameter and a concave arc guideway for a short diameter which are provided on the movable butted end face 5b and are recessed. The long-diameter arc concave guideway 10a is
The spherical portion 8e of 8a, which is one of the pair of engaging projections, is slightly fitted between 6a, which is one of the pair of first engaging recesses, and 6c, which is one of the pair of second engaging recesses. It is recessed to be inserted. On the other hand, the short-diameter arc concave guideway 10b
Is located between 6d which is the other of the pair of second engagement recesses and 6b which is the other of the pair of first engagement recesses, and slightly changes the spherical portion 8c of 8b which is the other of the pair of engagement projections. It is recessed to fit only.

Then, the arcuate concave guide path 10 for the long diameter is used.
a, the arcuate concave surface guide path 10b for the short diameter, as described above, when the spherical portion space 5d is separated from the spherical portion 8e and the movable disk 5 rotates thereafter, only the tip of the spherical portion 8e is moved. By dropping into the respective guide paths 10a and 10b, the sphere 8f does not come off from the fitting receiving port 4e and the sphere 8f rolls smoothly, especially when the sphere 8f is used, This is to reduce frictional resistance as much as possible when the movable disk 5 rotates. In the above illustrated example, the arrangement of the engagement recess 6 and the engagement protrusion 8 is as follows.
Although two examples of different diameters according to the radius R and the radius r are disclosed, with respect to this, three or more different diameter positions are provided.
It is stated that the required opening angle α ゜ may be obtained.

[0027]

The hinge device for opening and closing a cover provided with a sphere of a folding device according to the prior art has been described above. However, in the present invention, such a hinge device for opening and closing and a novel hinge for opening and closing described later will be described. By properly using the sphere as described in the device,
By reducing the frictional resistance during the rotation of the movable disk, it is attempted to smoothly open and close the cover with respect to the device body using the opening and closing hinge device. First, in the hinge device for opening and closing provided with a sphere according to claim 1, regarding the hinge device for opening and closing the cover disclosed in FIGS. 11 to 13 shown as the conventional example, when opening and closing the cover, The sphere is disengaged from the state of being engaged in the predetermined engagement recess by rolling in the engagement receiving port against the elasticity of the ridge, and further, is in contact with the fixed butt end face or the movable butt end face, or the end face. Rolling by the state of engagement with the arc concave guideway,
It is configured so that it can be roll-fitted into a predetermined engagement recess, so that opening and closing operations can be performed lightly with small frictional resistance, and by introducing a sphere into the arc concave guideway. The sphere is trying to prevent unintentional detachment.

Next, in claim 2, FIG.
As can be understood from FIG. 13, when opening and closing and closing the cover, the respective spheres are engaged with the first and second engagement recessed pairs, respectively, in the engagement receiving opening against the elasticity of the spring. By disengaging by rolling, and further rolling in contact with the fixed butted end face or the movable butted end face,
By allowing the second and first engagement recesses to be rollably fitted into the respective engagement recesses, a smooth opening / closing operation of the cover is assured as in the first embodiment, and the cover can be held at a high angle of rotation. Trying to.

According to the third aspect, in addition to the structure of the second aspect, the first and second engagement recesses are provided between one and the other of the pair.
By connecting the arcuate concave guideway for the long diameter and the arcuate concave guideway for the short diameter, respectively, when the cover is opened and closed, each sphere is engaged with the first and second engagement recessed pair, respectively. From, it is released by rolling in the mating receiving port against the elasticity of the spring,
Further, by rolling in the engagement contact state with the arcuate concave guideway for the long diameter and the arcuate concave guideway for the short diameter, respectively,
The second engaging recessed pair is capable of rolling-fitting into the first engaging recessed pair, so that the second engaging recessed pair is freely rotatable.
The above-mentioned object can be achieved, and it is intended to surely prevent the accidental escape of the sphere.

In the case of the fourth aspect, as compared with the first to third aspects, the sphere is simply rotated with respect to the spherical space and the first and second engagement concave pairs. Not only is it fitted so as to be free, but it is also rotatable in the first and second sphere grooves, and is fitted so as to be movable in the radial direction of the fixed disk or the movable disk. Between the pair of second engagement recesses, curved first and second arcuate concave guide paths are continuously provided apart from the rotation axis of the movable disk. Thus, according to the present invention, when the cover is opened and closed, the first and second spheres are engaged with each of the first and second engagement recess pairs, respectively.
The first and second spherical grooves are separated from each other by rolling in the first and second spherical grooves against the elasticity of the striation, and further engaged with the first and second spherical grooves. The first and second engagement recesses are paired by rolling in the engagement contact state while following the first and second arc concave guide paths while allowing the radial variation in the inside. The opening / closing operation can be performed more smoothly and can be held with a sufficiently high angle of opening / closing.

[0031]

In order to achieve the above object, according to the present invention, according to the first aspect, a main body hinge tube of an apparatus main body and a cover contact end peripheral edge opposed to the main body contact end peripheral edge are provided. A cover hinge tube fixedly attached to the cover having a fixed disk in the main body hinge tube in a non-rotation state, and a movable disk in the cover hinge tube in a non-rotation state. Fixed butted end face,
In one of the movable butting end surfaces of the movable disk, a fitting recess formed by a plurality of openings is formed, and in the other, a sphere that engages with the above-described fitting recess by the elastic force of the spring is formed in the fitting receiving port. A plurality of engagement protrusions are provided so as to be rotatably inserted. When the cover is opened and closed and the respective spheres are engaged with predetermined engagement recesses, the protrusions are formed. And disengaged by rolling in the fitting receiving port against the elasticity of the fitting receiving port, and further, engaged with the fixed butted end face or the movable butted end face, or engaged with an arcuate concave guide path recessed in the end face. It is an object of the present invention to provide a hinge device for opening / closing and holding a cover equipped with a sphere of a foldable device, wherein the hinge device can be roll-fitted into a predetermined engagement recess by rolling according to a state.

In the second aspect, the basic structure is the same as that of the first aspect. However, in the case of the present invention, any one of the movable butting end face of the fixed disk and the movable butting end face of the movable disc has And a pair of first and second engagement recesses which are openings having different diameters from each other, and a sphere which engages with the first and second engagement recesses by the elasticity of the spring. A plurality of engaging projections are provided so as to be rotatably inserted in the fitting receiving port, and when opening and closing and closing the cover, the above-mentioned spheres are first and second engaging respectively. From the state of being engaged with the pair of recesses, it is separated by rolling in the fitting receiving port against the elasticity of the ridge, and further rolls in contact with the fixed butting end face or the movable butting end face. By doing so, it is possible to roll-fit into the second and first engagement recess pairs, respectively. It is a symptom.

Further, the third aspect is different from the first and second aspects in that either one of the movable butting end face of the fixed disk and the movable butting end face of the movable disc has different diameter arrangement from each other. The first, which is an opening,
A pair of second engagement recesses is formed, and between the one and the other of the first and second engagement recess pairs, a long-diameter arcuate concave surface on the fixed butted end surface or the movable butted end surface, respectively. The guide path and the arcuate concave guide path for the short diameter are connected to each other. On the other side, a sphere that engages with the first and second engagement recess pairs by the elastic force of the spring is rotated in the fitting receiving port. First and second engagement protrusion pairs are provided so as to be freely inserted, and when opening and closing and closing the cover, each of the spheres is engaged with the first and second engagement recess pairs, respectively. From the fitted state, it is disengaged by rolling in the fitting receiving port against the elasticity of the ridge, and is further engaged with the long-diameter arc concave guide path and the short-diameter arc concave guide path, respectively. , So that they can be roll-fitted into the second and first engagement recess pairs, respectively.

According to the fourth aspect, if a structure different from that of the first to third aspects is specified, one of the movable butting end face of the fixed disk and the movable butting end face of the movable disc has a different diameter. A first pair of engagement recesses, which are arranged, and a second pair of engagement recesses, each having a different diameter, are formed, and between the first engagement recess pair and the second engagement recess pair. The first and second arcuate concave guideways, which are formed on the fixed butted end face or the movable butted endface, respectively, are spaced apart from the axis of rotation of the movable disk and connected to each other. On the other side, a sphere that engages with the first and second engagement recessed pairs with the elasticity of the striation is provided in the fixed butt end face or the movable butt end face in the same diameter arrangement, and is long drilled in the radial direction. Rotatable in the first and second sphere grooves and changed radially. The was such that fitted so as to be freely 1, second engagement Hamatotsu unit pairs are provided, upon opening and closing of the cover, first the second sphere each first, second
The first and second spheres are separated from the first and second spheres by rolling in the first and second sphere grooves against the elasticity of the ridge from the state in which each of the first and second spheres is engaged. In a state where the first and second spheres are engaged with the grooves, the first and second spherical grooves are allowed to vary in the radial direction, and the first and second spherical concave guide paths are respectively engaged with the first and second spherical concave guide paths. By rolling in contact,
Each of the first and second engagement recessed pairs is capable of being roll-fitted into the other of the pair.

According to a fifth aspect of the present invention, the projection length of the spherical portion projecting from the fitting receiving port of the sphere is smaller than the radius of the sphere. Is clearly stated.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a hinge device for opening and closing a cover equipped with a sphere according to the above-mentioned claim 1 will be described in detail with reference to FIGS. Then, the device includes a main body hinge tube 1a of the device main body 1 and a cover hinge tube 2a fixed to the cover 2 having a cover contact end edge 2b facing the main body contact end peripheral edge 1b. I have. The above body hinge tube 1a
The fixed disk 4 is fitted in the cover hinge tube 2a in the rotation stopped state, and the movable disk 5 is fitted in the cover hinge tube 2a in the rotation stopped state. Further, in one of the fixed butted end face 4b of the fixed disc 4 and the movable butted end face 5b of the movable disc 5, an engagement recess 6 having a plurality of openings is formed as shown in FIG. As the opening, a spherical space 5d is disclosed. Further, on the other side corresponding to one of the above, a sphere 8f that engages with the elasticity of
As shown in FIG. 11G, a plurality of engaging projections 8 are formed as shown in FIG. 11G so as to be rotatable in the fitting receiving port 4e, as shown in FIG. 11C. .

Therefore, when the cover 2 is opened as described above, each of the spheres 8f is engaged with the predetermined engaging recess 6, and the cover 2 is held in the closed state. From the state of being released, it is separated by the rolling phenomenon in the fitting receiving port 4e against the elasticity of the above-mentioned spring. Further, rolling is performed in a state of contact with the fixed butted end face 4b or the movable butted end face 5b, or is disclosed in FIG. 12B or FIG. 13 formed on any of the end faces 4b and 5b as described above. Arc-concave guideway 10a for long diameter and short diameter for
By rolling under the engagement state with the arcuate concave guide path such as 10b, the rolling engagement is made into the predetermined engagement recess 6, and thus the open state of the cover 2 is maintained. Become.

As a matter of course, when the state is changed from the open state to the closed state, the rolling movement of the sphere 8f and the reversible path when the state changes from the open state to the closed state as described above are followed. And, of course, the engagement recess 6 described above
As for the set number of the engagement protrusions 8, any two or more arbitrary numbers can be selected as apparent from the conventional example.
Thus, according to the first aspect, when the movable disk 5 is rotated, the spherical body 8f rolls smoothly, so that the frictional resistance can be greatly reduced as compared with those described with reference to FIGS. By forming the concave guide path, unintended detachment of the sphere 8f can be surely prevented.

Next, the second aspect will be described in detail. The construction is different from the first aspect as follows. That is, with reference to FIGS. 11 to 13 already described as a conventional example, the fixed butted end face 4b and the movable butted end face 5b
11E, the pair of first engagement recesses 6a, 6b, and the second engagement recesses are formed by openings whose diameters are different in diameter from each other. A pair of recesses 6c and 6d are formed, and a spherical space 5d is disclosed as the opening in the same manner as before. On the other hand, the first and second engagement recess pairs 6a, 6
A pair of engaging projections 8a and 8b are provided so that the sphere 8f that engages with the b, 6c, and 6d by the elastic force of the ridge 7 is rotatably fitted in the fitting receiving port 4e. That is.

When the cover 2 is opened, the above-mentioned spheres 8f, 8f are engaged with the first engagement recessed pair 6a, 6b from the state of being engaged with the first engagement recessed pair 6a, 6b against the elasticity of the ridge 7 described above. 4
11 (b).
As understood from (C), (D), and (E), rolling is performed in contact with the fixed butting end face 4b or the movable butting end face 5b, and then rolling with respect to the second engagement recessed pair 6c, 6d. By the dynamic fitting, the closed state of the cover 2 is maintained. Furthermore, if the cover 2 is closed from the closed state, the above-described behavior at the time of opening is naturally performed reversibly. Therefore, according to the second aspect, the opening operation of the cover 2 having a small frictional resistance is ensured by the rolling of the sphere 8f as in the first aspect, and the wide-angle opening and closing operation of the cover 2 can be reliably performed. Become.

Further, the third aspect will be described below. The difference from the second aspect is that FIG.
13 and the fixed butted end face 4b
Or one of the movable butting end faces 5b,
In addition to forming the engagement recess pair 6a, 6b, 6c, 6d, the second engagement recess pair 6a, 6b and the second
A fixed butting end face is provided between one of the pair of engagement recesses 6c and 6d, and between the other 6b of the first pair of engagement recesses 6a and 6b and the other 6d of the second pair of engagement recesses 6c and 6d. 4b or the movable butted end face 5b, and the long-diameter arc concave guideway 10a
And the arcuate concave guideway 10b for the short diameter.

Therefore, according to the present invention, it is the same that the opening and closing of the cover 2 can be performed reversibly, and at the time of the opening operation, the respective spheres 8f are respectively connected to the first engagement recessed pair 6a,
From the state of engagement with 6b until it is released by rolling in the fitting receiving port 4e against the elasticity of the ridge 7, the same as in claim 2, but thereafter, the long-diameter arc concave guideway 1
0a, they roll on the arcuate concave guideway 10b for the short diameter under the state of being engaged with and engaged with, respectively, and the spheres 8f, 8
It is the same as the previous case that f is rolled into the second engagement recessed pair 6c, 6d to be in the open holding state. Therefore, according to the third aspect, not only the same effects as those of the second aspect are provided, but also the spheres 8f, 8f are detached from between the fixed disk 4 and the movable disk 5 when the cover is opened and closed. This can be completely prevented.

Next, claim 4 will be described below with reference to FIGS. 1 to 3. Here, the same reference numerals are used for the same constituent members as those described with reference to FIGS. 5 to 13 above. First, the following configuration has the same contents as the above-described prior art. That is, as can be understood from FIG. 1, the main body hinge tube 1a fixed to the device main body 1 and the cover contact end peripheral edge 2b slidably in contact with the main body contact end peripheral edge 1b are fixed to the cover 2. Cover hinge cylinder 2a. further,
The fixed disk 4 is fitted in the main body hinge cylinder 1a in a rotation stopped state, and the cover hinge cylinder 2a is
Also, the fixed disk 5 is fitted in the rotation stopped state.

As shown in FIG. 1A, reference numerals 1c denote guide ribs, 2c and 2d denote grooves and bottom portions of the cover hinge cylinder 2a, and 3 denotes a hinge portion. 4a is a guide groove, 4b is a fixed butt end face, 4c is a storage cavity, 4d is a shaft hole, and 5a is a rib on the movable disk 5, 5b is a movable butt end face, 5c is a shaft hole, and 7 is a sprocket. , 9 denotes a screw rod, and 9a denotes a tip of the screw portion.

According to a fourth aspect of the present invention, there is provided the hinge device for holding the opening and closing as described above.
b and one of the movable butting end surfaces 5b of the movable disk 5, in the illustrated example, on the movable butting end surface 5b of the movable disk 5, and as seen from FIG. A first starting point engaging recess 1 as a first engaging recess pair 11 in which the radii R and r are different in diameter from each other.
1a and a first end-point engaging recess 11b are formed. Further, in the case of the one, the rotation axis S
The second starting point engaging recess 12a as the second engaging recess pair 12 having a large-small-diameter arrangement with the same radius R and r from the front.
And a second end point engaging recess 12b.

On the other hand, in the example of FIG. 2, the fixed butted end face 4b of the fixed disk 4 is different from the one described above.
In addition, the first engagement projection 13a and the second engagement projection 13b, which can be engaged with the first and second engagement recessed pairs 11 and 12 by the elastic force of the ridge 7, are mutually connected. They are arranged with the same length and large diameter (radius R) at the required circumferential angle position Q1. Then, the first starting point engaging recess 11a and the second
The starting point engaging recesses 12a are arranged at a required circumferential angle position Q1, which is the same length and large diameter arrangement with a large radius R, and the first end point engaging recess 11b and the second end point engaging recess 12b.
Means that they are arranged at the required angular position Q2 which is the same length and small diameter arrangement with a small radius r.

Further, in the present invention, a component communicating with the arcuate concave guideway 10a for the long diameter and the arcuate concave guideway 10b for the short diameter in the above-mentioned proposed example is provided, but here the first starting point engaging recess is provided. A first arcuate concave guideway 14a is provided continuously between the first end engagement recess 11b and the first end engagement recess 11b, and is located between the second start engagement recess 12a and the second end engagement recess 12b. , The second arc concave guide path 14b is provided continuously.

Here, the first and second engaging projections 13 described above are used.
More specifically, as can be understood from FIGS. 1 (A) and 2, the first sphere is located at the required circumferential angular position Q1 and is movable in the radial direction within a range of the required length L. 15a and the second sphere 15b. That is, in the illustrated example, the first spherical groove 16a and the second spherical groove 16b are provided in the fixed butted end face 4b of the fixed disk 4 by a predetermined length in the radial direction, and
The first sphere 15a and the second sphere 15b fitted so as to be movable in the vertical direction in the drawing are housed with a part thereof protruding from the first and second sphere grooves 16a, 16b. The protruding portions are the same as the contents shown in FIG. 11 (G), and the first and second spheres 15a, 15
It is desirable that the volume be smaller than 1/2 of the total volume of b.

Based on the above configuration, in the present invention, when the cover 2 is closed and opened, the first and second spheres 15a and 15b are respectively engaged with the first starting point engaging recess 11a and the second
When the movable disk 5 is opened from the state where the movable disk 5 is engaged with the starting point engaging recess 12a, the movable butting end face 5b
However, by pressing the first and second spheres 15a and 15b against the elasticity of the ridge 7, the first and second arc concave guide paths 14 are respectively provided.
a and 14b are fitted and rolled, and finally are freely rotatable and fit into the first end-point engaging recess 11b and the second end-point engaging recess 12b, respectively.

The first arcuate concave guideway 14a and the second arcuate concave guideway 14b have a first sphere 15a and a second sphere 15b, respectively, and a first and a second sphere groove 16a, 16b.
As described above, since the movable disk 5 is slidable in the diametrical direction at the required circumferential angle position Q1 as described above, the separation distance of the movable disk 5 from the rotation axis S changes with the rotation angle. , Always the first and second spheres 15
The distance D between a and 15b is curved so as to maintain substantially the same length. Accordingly, in the illustrated example, the movable disk 5 is supported by the first and second spheres 15a and 15b at the same distance D 'from time to time when the cover 2 is opened and closed.
Is guaranteed to be in a stable rotation state, whereby the first and second
The rolling of the spheres 15a and 15b also proceeds smoothly, so that the opening and closing movement of the cover 2 can be operated without resistance.

Further, the first and second arc concave guide paths 14a,
1B, the first and second arcuate concave guide paths 14a, 14b are curved so as to maintain a separation distance D 'of substantially the same length from the rotation axis S. Are the first point 01 and the second point 02 respectively set on the rotation axis S side.
Are formed by circular orbits having the same length (radius d).

Next, in the first and second concave concave guide paths 14a and 14b disclosed in FIG. 3, the radius d1 is set to be centered on the rotation axis S without using one circular path of the same radius. The first same-radius circular orbit U1, the second same-radius circular orbit U2 having the center point 03, 04 set on the rotation axis S side and the radius d2, and the rotation axis S side as the center. And a third same-radius circular orbit U3 having a radius d3. Therefore, even in this case, the separation distance D 'having substantially the same length is always maintained during the entire opening and closing movement of the cover 2.

Further, the first and second arcuate concave guideways 14a and 14b shown in FIG. 4 have not only the same orbit of the same radius but also the straight orbit. In other words, a first same-radius circular orbit U1 having a radius d1 around the rotation axis S and a second same-radius circular orbit having a radius d2 having center points 03 and 04 set on the rotation axis S side. U2, and then a straight orbit T and a third same-radius circular orbit U3 having a radius d3 about the rotation axis S are sequentially continued. Therefore, also in this case, the first and second spheres 15a,
15b rolls on the first and second arcuate concave guide paths 14a and 14b while sliding in the first and second spherical grooves 16a and 16b. At this time, the first and second spherical bodies 15a and 15b Is held at the same distance D from the rotation axis S, so that the cover 2 can be opened and closed in a stable and smooth manner.

As can be understood from the above explanation, in the hinge device for holding the opening and closing provided with the sphere according to the fourth aspect, one of the fixed butting end face 4b and the movable butting end face 5b has a different diameter. The first pair of engagement recesses 11 are arranged, and the second pair of engagement recesses 1 are arranged differently from each other.
2 and the first engagement recessed pair 11 described above;
The first arc concave guideway 1 is located between the second engagement recess pair 12.
4a and the second arc concave surface guide path 14b are connected to each other.

Further, in the fourth aspect, the first and second engagement recesses 11 and 12 are engaged with the first and second engagement recesses 11 and 12 by the elastic force of the ridge 7.
The second spheres 15a and 15b are arranged in the same diameter as the fixed butt end face 4b or the movable butt end face 5b as described above, and the first and second sphere grooves 16a which are bored long in the radial direction are provided.
The first and second engagement projections 13a, which are rotatable within 16b and are fitted so as to be movable in the radial direction,
13b is provided. As a result, in the present invention, when the cover 2 is opened, the first and second spheres 15a, 15
b is in the first and second sphere grooves against the elasticity of the ridge 7 from the state in which each one (11a, 12a) of the first and second engagement recessed pairs 11 and 12 is engaged. In the state of being disengaged by the rolling and being engaged with the first and second spherical grooves 16a, 16b, the radial fluctuation in the first and second spherical grooves 16a, 16b is allowed. Thus, the first and second arcuate concave guide paths 14a and 14b respectively follow and roll in the engagement contact state while following the first and second arc concave guide paths 14a and 14b.
The other engagement (11b, 12b) of the second engagement recessed pair will be roll-fitted.

Also, in this case, the behavior when the lever 2 is closed is a reversible motion as compared with the above-described opening. Therefore, according to the fourth aspect, in addition to the operation and effect according to the third aspect, Even if the first and second spheres 15a and 15b roll on the first and second arc concave guideways 14a and 14b, which are considerably varied, smooth and trouble-free running becomes possible. Opening and closing operations can be easily guaranteed.

According to a fifth aspect, in the first to fourth aspects described above, the sphere that is the sphere 8f and the first and second spheres 15a and 15b will be described with reference to FIG.
1 (F) and 1 (G), and as shown in [0048], the protrusion length d of the spherical portion 8e protruding from the fitting receiving port 4e of the sphere corresponds to the radius D of the sphere. / 2
The content is that it is formed to be smaller than that.

[0058]

Since the present invention is constructed as described above, according to the first aspect, when opening and closing various covers, the sphere to which the elasticity due to the sprung is appropriately applied is rolled. The sphere is rolled by the engagement between the fixed butting end face or the movable butting end face and the arcuate concave guideway, which is engaged or disengaged from the engaging recess while moving, and receives the same elasticity. Therefore, the cover can be opened and closed smoothly and smoothly at all times, and unintended detachment of the sphere can be completely prevented.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a pair of first and second engagement recesses each having openings of different diameters are formed, and a sphere is fitted. Since the engagement recessed pair rotatably fitted in the receiving port is provided, not only can the cover be smoothly rotated as in claim 1, but also the cover can be rotated at a high angle, Holding can be realized with high reliability.

According to the third aspect, the cover is opened and closed by rolling the sphere through the long-diameter arc concave guide path and the short-diameter arc concave guide path as compared to the second aspect. Can be held, so that not only the above-described effect of the second aspect is exhibited but also the unintended detachment of the sphere can be prevented.

According to the fourth aspect, the first,
The second sphere is allowed to rotate in the first and second sphere grooves and freely fluctuate in the radial direction, and the first and second concave arc surface guide paths through which the sphere rolls pass are curved. Therefore, the first and second spheres roll smoothly even when various types are set in the first and second concave arc surface guide paths, thereby realizing wide-angle opening and closing of the cover. According to the fifth aspect, the rolling of the sphere according to the first to fourth aspects is such that the protruding portion of the sphere has a volume smaller than 2/1 as compared with the whole volume, A more stable opening and closing movement of the cover can be guaranteed.

[Brief description of the drawings]

1A is a longitudinal sectional front view showing a use state of a hinge device equipped with a sphere according to claim 4 of the present invention for opening and closing a cover, and FIGS. 1B and 1C are respectively left end faces of a movable disk in the device; It is a figure and a front view.

FIGS. 2A and 2B are a right end view and a front view, respectively, of the movable disk in FIG.

FIG. 3 is a right end view of a movable disk according to another embodiment different from FIG. 2;

FIG. 4 is a right end view of a movable disk according to another embodiment different from FIGS. 2 and 3;

FIG. 5 is a schematic perspective view showing a conventional foldable device in a cover opened state.

FIG. 6 is an exploded perspective view of the front hinge device in FIG.

7 (A) is a movable butt end view showing the movable disk of FIG. 5, (B) is a fixed butt end view of the fixed disk, (C) is a cross-sectional view taken along line CC of (A), (D) FIG. 4B is a cross-sectional view taken along line DD of FIG. 4B, and FIG. 4E is a vertical cross-sectional view showing the movable disk of FIG. 4C and the fixed disk of FIG.

8 is a vertical sectional front view showing the conventional front hinge device using the components shown in FIG. 7;

9A is a partial front view showing the fixed disk of the previously proposed hinge device, FIG. 9B is an end view of the fixed butted portion, and FIG. 9C is a partial front view showing the movable disk of the same. In the figure, (D) is a rear view of the movable butted end face, (E) is a partial front view showing the engaged state of the fixed disk and the movable disk, and (F) is an explanation of the engaged state as viewed from the fixed butted end face. It is a side view.

FIG. 10 is a longitudinal sectional front view of the same front hinge device according to the proposed device using the components shown in FIG. 9;

11A is a longitudinal sectional front view showing the same front hinge device using components different from those in FIGS. 9 and 10, and FIG. 11B is a fixing view in FIG. In the partial front view of the disk, (C) is the fixed butted end view, (D)
(E) is a rear view of the movable butted end face, and (F) shows the relationship between the engaging concave portion and the engaging convex portion in (A). FIG. 4G is an enlarged vertical sectional front view showing a state in which the protruding spherical portion is engaged with the spherical space of the movable disk, and FIG. FIG. 4 is an enlarged vertical sectional front view showing a state in which it is engaged.

FIG. 12 (A) is a partial side view showing a state where the fixed disk and the movable disk are engaged with each other, including the hinge device shown in FIG. 9 and FIG. B) is an explanatory side view of the engaged state viewed from the fixed butted end face.

FIG. 13 is a movable butting end view of a movable disk according to a proposed example different from that of FIG. 12 (B).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 1a Main body hinge cylinder 1b Main body contact end peripheral edge 2 Cover 2a Cover hinge cylinder 2b Cover contact end peripheral edge 4 Fixed disc 4b Fixed butted end face 4e Fitting receiving port 5 Movable disc 5b Movable butted end face 5d Spherical space Reference Signs List 6 engaging recess 6a first engaging recess pair 6b first engaging recess pair 6c second engaging recess pair 6d second engaging recess pair 7 spring 8 engaging protrusion 8a engaging protrusion pair 8b Engagement convex part pair 8e Spherical part 8f Spherical body 10a Long diameter arc concave surface guide path 10b Short diameter arc concave surface guide path 11 First engagement concave part pair 12 Second engagement concave part pair 13a First engagement convex part 13b 2nd engagement convex part 14a 1st arc concave guideway 14b 2nd arc concave guideway 15a 1st sphere 15b 2nd sphere 16a 1st sphere groove 16b 2nd sphere groove D / 2 Radius of sphere D 'Separation distance d Projection length S Rotation axis

Claims (5)

[Claims] 1. An apparatus main body comprising: a main body hinge cylinder; and a cover hinge cylinder fixed to a cover having a cover contact end peripheral edge opposed to the main body contact end peripheral edge. The fixed disk is fitted in the rotation-stopped state and the movable disk is fitted in the cover hinge cylinder in the rotation-stopped state, and a plurality of openings are provided on one of the fixed end face of the fixed disk and the movable butted end face of the movable disk. A plurality of engaging projections which form an engaging recess, and on the other side, a sphere which engages with the above-described engaging recess by the elasticity of the spring so as to be rotatable in the fitting receiving port. A part is provided, and when opening and closing and closing the cover, the above-mentioned respective spheres are engaged in predetermined engagement recesses by rolling in the engagement receiving opening against the elasticity of the projection. The fixed butted end face or the movable butted Whether it is in contact with the mating end face,
A cover equipped with a sphere of a folding device, wherein the cover can be rollably fitted into a predetermined engagement recess by rolling in an engagement state with an arcuate concave guideway formed in the end surface. Hinge device. 2. A main body hinge comprising: a main body hinge cylinder fixed to a device main body; and a cover hinge cylinder fixed to the cover having a cover contact end peripheral edge opposed to the main body contact end peripheral edge. A fixed disk is fitted in the cylinder in the rotation-stopped state, and a movable disk is fitted in the cover hinge cylinder in the rotation-stopped state, and either one of the fixed butted end surface of the fixed disk and the movable butted end surface of the movable disk is And a pair of first and second engagement recesses which are openings having different diameters from each other, and a sphere which engages with the first and second engagement recesses by the elasticity of the spring. A plurality of engaging projections are provided so as to be rotatably inserted in the fitting receiving port, and when opening and closing and closing the cover, the above-mentioned spheres are first and second engaging respectively. From the state of being engaged with the pair of recesses, the inside of the fitting receiving port is opposed to the elasticity of the spring. , And by rolling in a contact state with respect to the fixed butted end face or the movable butted end face, it is possible to roll and fit into the second and first engagement recessed pairs, respectively. A hinge device for opening / closing and holding a cover equipped with a sphere of a folding device. 3. A main body hinge comprising: a main body hinge cylinder fixed to the device main body; and a cover hinge cylinder fixed to the cover having a cover contact end peripheral edge opposed to the main body contact end peripheral edge. A fixed disk is fitted in the cylinder in the rotation-stopped state, and a movable disk is fitted in the cover hinge cylinder in the rotation-stopped state, and either one of the fixed butted end surface of the fixed disk and the movable butted end surface of the movable disk is Also form first and second pairs of engagement recesses, which are openings of different diameters, and the first and second engagement recess pairs are fixed to each other between one and the other as described above. The arcuate concave guideway for the long diameter and the arcuate concave guideway for the short diameter are provided continuously at the butting end surface or the movable butting end surface, and the other is formed by the elasticity of the spring against the first and second engagement recessed pair. Insert the engaging sphere so that it can rotate freely in the fitting receiving port The first and second engagement protrusion pairs are provided, and when the cover is opened and closed, the respective spheres are engaged with the first and second engagement recess pairs, respectively.
It is disengaged by the rolling in the fitting receiving port against the elasticity of the ridge, and further rolls in the engagement concave contact state with the long-diameter arc concave guide path and the short-diameter arc concave guide path, respectively. The hinge device for holding the cover opening / closing equipped with the sphere of the folding device, wherein the hinge device is capable of being roll-fitted into the second and first engagement recess pairs, respectively. 4. An apparatus according to claim 1, further comprising: a main body hinge tube fixed to the device main body; and a cover hinge tube fixed to the cover having a cover contact end peripheral edge opposed to the main body contact end peripheral edge. A fixed disk is fitted in the cylinder in the rotation stopped state, and a movable disk is fitted in the cover hinge cylinder in the rotation stopped state. One of the fixed butted end face of the fixed disk and the movable butted end face of the movable disc is A first engagement recessed pair having different diameters and a second engagement recessed pair having mutually different diameters, and the first engagement recessed pair and the second engagement recess. The first and the second arcuate concave guide paths, which are located on the fixed butted end face or the movable butted end face, respectively, are spaced apart from the rotation axis of the movable disc and the second arcuate guideway.
An arcuate concave guideway is provided continuously, and the other end is provided with a sphere which engages with the first and second engagement recess pairs by the elastic force of the spring, and has a fixed butt end surface or a movable butt end surface having the same diameter. First and second pairs of engagement projections are provided so as to be rotatable in the first and second sphere grooves that are bored long in the radial direction and to be fitted so as to be movable in the radial direction. When opening and closing and closing the cover, the first and second spheres are engaged with each one of the first and second engagement recessed pairs, respectively, from the state in which the first and second spheres are engaged with each other, against the elasticity of the projection. The first and second spherical grooves are separated by rolling in the second spherical groove, and are further engaged with the first and second spherical grooves in the radial direction in the first and second spherical grooves. The first and second arc-shaped concave guide paths are allowed to fluctuate, and the first and second arc-shaped concave guide paths are rolled in the engagement contact state while following the first and second arc concave guide paths, respectively. Second Kakarihama recess pairs cover closing retaining hinge apparatus equipped with a spherical folding device, which is a rollably fitted into each other. 5. The sphere for a folding device according to claim 1, wherein a projection length of the spherical portion protruding from the fitting receiving port of the sphere is formed smaller than a radius of the sphere. Equipped with a hinge for opening and closing the cover.