JP5805419B2 - Hinge device, opening / closing device, and portable device - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention particularly relates to a hinge device suitable for use in a relatively rotatable connection in a state in which a first casing and a second casing constituting a portable device such as a notebook computer are overlapped with each other. The present invention relates to an opening / closing device and a portable device.

  A notebook personal computer, which is a type of portable device, includes a first casing provided with a keyboard portion on an upper surface thereof, and a second casing provided with a display portion. These first casing and second casing are provided. What connected the housing | casing so that opening and closing was possible with the hinge apparatus is well-known. In this notebook computer, the second casing is connected to the rear of the upper surface of the first casing via a hinge device so that the second casing can be opened and closed, and the second casing is overlapped on the upper surface of the first casing. In addition to being able to be closed together, the keyboard and the display unit can be exposed by opening the second housing with respect to the first housing from the overlapped state.

  As a hinge device for this purpose, a hop-up mechanism and a friction mechanism are combined to form one hinge device, and the second housing is manually moved from the closed state to the first housing. When it is slightly opened with respect to the housing, the second housing is automatically hopped up to the predetermined opening angle by the hop-up mechanism and opened to the predetermined opening angle, and the friction starts from the predetermined opening angle. A mechanism capable of manually opening the second housing with respect to the first housing by a mechanism, an opening / closing device using a pair of hinge devices having such a configuration, and a notebook computer, It is known from Patent Document 1 below.

JP 2007-309281 A

  The hinge device described in Patent Document 1 is attached to a first casing, and is attached to a second casing and attached to the second casing together with the hinge shaft. And a cam slider that is slidably biased in one direction toward the mounting member, and a cam body that is pressed against the cam slider and attached to the hinge shaft. A hop-up mechanism, which is provided between the support member and the hinge shaft, opens and closes the support member in a free stop with respect to the mounting member from a predetermined opening position of the second housing relative to the first housing by the hop-up mechanism. A suction mechanism for biasing the support member in the closing direction with respect to the attachment member from the friction mechanism and a predetermined closing angle of the second casing with respect to the first casing. It was equipped and only mechanism.

The hinge device having such a configuration is a new hinge device that improves the operability by combining the hop-up mechanism, the friction mechanism, and the suction mechanism.
The hinge shaft is rotatably mounted on both side plates of the mounting member, and the cam body of the hop-up mechanism is fixed to the hinge shaft. Further, the cam A body of the friction mechanism is in the axial direction of its central portion. Since the hinge shaft is inserted through and fixed to the side plate of the mounting member, there is a problem that it is difficult to assemble so as to operate accurately, and a stable friction torque cannot be obtained. Further, the friction mechanism has a difficulty that it is difficult to create a stable friction torque.

  In addition, when the hinge device is used as a pair of portable device opening and closing devices such as a notebook personal computer, the operation of the second housing by the hop-up mechanism with respect to the first housing is abrupt. In addition, the suction mechanism makes the rotation of the support member stronger during the closing operation of the second casing with respect to the first casing by the suction mechanism, and the second casing suddenly moves with respect to the first casing. There was also a problem that it was closed with an impact sound, and there was room for improvement in terms of operability.

  Accordingly, an object of the present invention is to provide a hinge device that is easy to assemble and has improved operability, an opening / closing device using the hinge device, and a portable device. is there.

In order to achieve the above object, the hinge device according to claim 1 according to the present invention is a hinge device that connects the first housing and the second housing so as to be openable and closable, and has a common hinge shaft. A hop-up mechanism and a friction mechanism, and the hop-up mechanism also serves as a spring case attached to the first casing, and a sliding bias in one direction by elastic means in the attachment member A cam slider that is mounted, a hinge shaft that is non-rotatably mounted on both side plates of the mounting member, a hop-up cam member that is pressed against the cam slider and rotatably mounted on the hinge shaft, and a support member Keru Installing the second housing where rotatably mounted located outside of the mounting member to the hinge shaft, the rotation of the support member A rotation transmitting member for transmitting to the hop-up cam member, in constructed, the friction mechanism, a friction Deployment torque generating means provided between the supporting member and the hinge shaft, the friction torque generating means, said A rotating cam member that is inserted through a hinge shaft and rotated together with the support member; a fixed cam member that is fixed to the hinge shaft and is provided adjacent to the rotating cam member; the fixed cam member; A plurality of disc springs that are inserted through the hinge shaft to press the rotating cam members together, and the friction mechanism provides a stronger friction torque in an open / close angle range where the hop-up mechanism does not operate. And free the second housing attached to the support member Characterized in that form to stop at the top.

In this case, the hinge device according to claim 2 has an opening / closing angle range in which a stronger friction torque is created on the support member side by the friction mechanism in the closing angle of the second casing and in the vicinity thereof. It is characterized in that the angle range is set to a range that is equal to or larger than a predetermined opening / closing angle of the second casing.

According to a third aspect of the present invention, in the hinge device, the rotation transmission member is constituted by a cylindrical member rotatably attached to the hinge shaft, and one end of the rotation transmission member is engaged with the support member. And the other end is engaged with the hop-up cam member.

Further, the hinge device according to claim 4, wherein the friction torque generating means is inserted into the hinge shaft and rotated with the support member, and the rotation cam member is fixed to the hinge shaft and rotates. A fixed cam member provided adjacent to the cam member, a friction washer provided to be restricted by the hinge shaft between the rotating cam member and the support member, the rotating cam member, the friction washer, and the The rotating cam member and the fixed cam member are configured to include a plurality of disc springs provided by inserting the hinge shaft so as to be in pressure contact with each other.

The switchgear according to claim 5 is provided with a pair of the hinge devices according to any one of claims 1 to 4, and the hop-up operation of each of the hop-up mechanisms of the pair of hinge devices is started. It is characterized by shifting the times with respect to each other.

Furthermore, the opening / closing device according to claim 6 is provided with a pair of hinge devices according to any one of claims 1 to 4, and by changing the shape of the cam slider of the hop-up mechanism, It is characterized by being configured to shift the start time of the hop-up operation.

Furthermore, the switchgear according to claim 7 is the hopup operation by the hop-up mechanism in the switchgear described above by changing the mounting position of the hop-up cam member of the hop-up mechanism with respect to the hinge shaft. It is characterized in that the start time is shifted.

Furthermore, a portable device according to an eighth aspect includes the hinge device according to any one of the first to fourth aspects.

According to a ninth aspect of the present invention, there is provided a portable device including the switchgear according to any of the fifth to seventh aspects.

  By configuring as described above, the present invention is easy to assemble as a hinge device, and creates a strong friction torque by the friction mechanism when the second casing is closed with respect to the first casing. The second housing can be prevented from closing suddenly with respect to the first housing, and the hop-up mechanism can be used when the second housing is opened relative to the first housing. It is possible to prevent a sudden hop-up and to further improve the operability.

1 is a perspective view of a notebook computer that is an example of a portable device using a hinge device and an opening / closing device according to the present invention. It is a side view which shows an example of the hinge apparatus which concerns on this invention. It is a top view which shows an example of the hinge apparatus which concerns on this invention. It is a front view which shows an example of the hinge apparatus which concerns on this invention. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is explanatory drawing explaining the state of the hinge apparatus which concerns on this invention, and the opening / closing apparatus in the state which closed the 1st housing | casing and 2nd housing | casing of the notebook personal computer which is an example of the portable device which concerns on this invention. It is explanatory drawing explaining operation | movement of the hinge apparatus and opening / closing apparatus which similarly concerns on the state which opened the 1st housing | casing and 2nd housing | casing of the notebook personal computer which is an example of the portable device which concerns on this invention about 15 degrees. is there. Explanatory drawing explaining operation | movement of the hinge apparatus which similarly concerns on this invention, and the opening / closing apparatus in the state at the time of completion | finish of the hop-up operation | movement of the 2nd housing | casing with respect to the 1st housing | casing of the notebook computer which is an example of the portable device which concerns on this invention. It is. It is explanatory drawing explaining operation | movement of the hinge apparatus similarly based on this invention in the use opening-and-closing angle of the 1st housing | casing of a notebook personal computer which is an example of the portable apparatus which concerns on this invention, and a 2nd housing | casing. It is explanatory drawing explaining operation | movement of the friction mechanism of the hinge apparatus which concerns on this invention, and an opening / closing apparatus, (a) is a rotation cam member and fixed cam member in the closed state of a 1st housing | casing and a 2nd housing | casing. The positional relationship is shown, (b) shows the positional relationship between the rotating cam member and the fixed cam member when the first housing and the second housing are opened by 15 °, and (c) shows the use of the second housing. It is explanatory drawing which shows the positional relationship of the rotating cam member and fixed cam member in an angle range, respectively It is a perspective view of each component of the hop-up mechanism of the hinge device according to the present invention, (a) is a mounting member, (b) is a first spacer, (c) is a second spacer, (d) is a cam slider, (E) is a hop-up cam member, (f) is a rotation transmission member, and (g) is a hinge shaft. It is a perspective view of each component of the friction mechanism of the hinge device according to the present invention, (a) is a first support substrate portion of the support member, (b) is a second support substrate portion, (c) is a rotating cam member, (D) shows a fixed cam member and (e) a friction washer. It is a sectional side view which shows the other Example of the hinge apparatus which concerns on this invention, and an opening / closing apparatus.

  Hereinafter, a hinge device, an opening / closing device, and a portable device according to the present invention will be described with reference to the drawings. In the present invention, the hinge device refers to a hinge device as a single unit, and the opening / closing device refers to a case where a pair of hinge devices as a single unit is used. Examples of portable devices include notebook computers, PDAs, pocket computers, Zaurus (trademark), cellular phones, calculators, and portable game machines. In the present invention, the portable device includes an ashtray, a case lid, and the like. That is, the use of the hinge device according to the present invention is not particularly limited as long as it connects two housings so that they can be opened and closed. In the following description, a notebook personal computer will be described as an example of a portable device, but the present invention is not limited to this.

  FIG. 1 is a perspective view of a notebook personal computer showing an example of a portable device provided with a hinge device and an opening / closing device according to the present invention. 2-6 is a figure which shows an example of the hinge apparatus based on this invention. 7 to 10 are explanatory views for explaining the operation of the hinge device and the opening / closing device according to the present invention. FIG. 12 is a perspective view of each component of the hop-up mechanism of the hinge device according to the present invention. FIG. 13 is a perspective view of each component constituting the friction mechanism of the hinge device according to the present invention. FIG. 14 is a view showing another embodiment of the hinge device according to the present invention.

  As shown in FIG. 1, the notebook computer 1 includes a first housing 2 having a keyboard portion 2a and a second housing 3 having a display portion (not shown). Although not shown, the second housing 3 is connected to be opened and closed through a pair of hinge devices attached to portions surrounded by round imaginary lines a and b. This pair of hinge devices is composed of the device of the first embodiment and the device of the second embodiment. However, the present invention is not limited to this, and the device of the first embodiment and the device of the second embodiment are used in pairs. Anyway. Although the configurations of the first embodiment and the second embodiment are slightly different from each other as will be described later, most of the configurations are the same. Therefore, in the following description, one hinge device surrounded by round imaginary lines a and b is used as an embodiment. Description will be made on the first hinge device A, and only the other configuration of the other hinge device as the hinge device B of the second embodiment will be described.

  As shown in FIGS. 2 to 6, the hinge device A according to the present invention is a combination of the hop-up mechanism 5 and the friction mechanism 20. The hop-up mechanism 5 includes a bottom plate 6 a and both sides of the bottom plate 6 a. The raised side plates 6b, 6b, the holding pieces 6c, 6c folded inward from the substantially central portion on the free ends of the side plates 6b, 6b, and folded inward from the end portions of the side plates 6b, 6b. A mounting member 6 comprising a stopper piece 6d, 6d, a front plate 6k provided upright from the bottom plate 6a on the front side of both side plates 6b, 6b, and a mounting plate 6i bent from the front plate 6k, and the mounting member 6, a cam slider 7 that also serves as a spring case of an elastic means, which will be described later, is slidably housed in 6, and the cam slider 7 is housed inside the mounting member 6 in order to bias the cam slider 7 in one direction. Elastic means 8 composed of large and small compression coil springs 8a, 8b, a hinge shaft 9 fixed on the shaft between both side plates 6b, 6b of the mounting member 6, and rotatably mounted on the hinge shaft 9. A hop-up cam member 10 that presses the cam projection 10a against the cam slider 7 by elastic means 8, a support member 11 that is rotatably attached to the hinge shaft 9, and the hop-up cam member 10 that rotates the support member 11 is rotated. The rotation transmission member 12 has a hinge shaft 9 inserted through an insertion hole 12c provided in the axial direction of the central portion thereof.

  More specifically, on the upper surface of the bottom plate 6a of the mounting member 6 and the front plate 6k side facing the hinge shaft 9 of the side plates 6b and 6b, in order to reduce operating noise (noise) during operation of the hop-up mechanism 5. A first spacer 13 and a second spacer 14 made of synthetic resin are attached. That is, the former first spacer 13 has the locking projections 13a and 13b inserted into the locking holes 6e and 6f provided in the bottom plate 6a, and the latter second spacer 14 is mounted between the side plates 6b and 6b. Each is attached via a pin 15. The second spacer 14 is provided with a recess 14a for receiving the elastic means 8. The locking projection 14c is fitted into the locking hole 6f, and the both side plates 6b, 6b and the bottom plate of the mounting member 6 are mounted via the mounting pins 15. It is attached between 6a. Mounting holes 6g and 6h are provided in the bottom plate 6a and the mounting plate 6i of the mounting member 6, and mounting portions 2c provided at the rear portion of the first housing 2 with mounting screws 16a and 16b through the mounting holes 6g and 6h. Is attached to.

  The cam slider 7 is provided with a top portion 7a on one end side and a cam portion 7b that is curved and inclined in one direction from the top portion 7a. Further, a housing portion 7c for the elastic means 8 is provided on the side opposite to the side on which the cam portion 7b is provided. In the elastic means 8, large and small compression coil springs 8a and 8b having different diameters are overlapped in the axial direction, and the use of the double is intended to reduce the size of the hinge device. Note that the compression coil springs 8a and 8b of the elastic means 8 are wound in opposite directions in order to prevent the generation of abnormal noise during operation. The elastic means 8 can be made of rubber.

  The hop-up cam member 10 has a substantially water droplet shape in cross section provided with an insertion hole 10b in the axial direction. The hinge shaft 9 is inserted into the insertion hole 10b and is rotatable about the axis of the hinge shaft 9. The hinge shaft 9 includes a first deformation shaft portion 9a, a circular shaft portion 9b, a second deformation shaft portion 9c, and a third deformation shaft portion 9d that are continuously provided in the axial direction from one end thereof. The portion 9a is inserted into a modified mounting hole 6o (see FIG. 12A) provided in one side plate 6b of the mounting member 6, and the circular shaft portion 9b is inserted into the circular mounting hole 6n (see FIG. 12A). Then, the exposed end portion of the first deformation shaft portion 9a is fixed to the attachment member 6 in a non-rotating manner by caulking. Furthermore, as shown in FIG. 12A, the indication symbols 6p and 6r of the attachment member 6 are attachment holes of the attachment pin 15 for fixing the second spacer 14.

  The support member 11 is composed of a first support substrate portion 11a and a second support substrate portion 11c, which have a cross-sectional angle shape that is overlapped and fixed by caulking with mounting pins 11g and 11g. The first support substrate portion A long support piece 11b for supporting the second casing 3 is attached to 11a with attachment pins 11h and 11h. A second support substrate portion 11c having the same cross-sectional angle shape is overlapped and fixed to the first support substrate portion 11a, and both are rotatably attached around the axis of the hinge shaft 9. The rotation transmission member 12 has a cylindrical shape, and the hinge shaft 9 is inserted into the insertion hole 12c provided in the axial center portion thereof, and one of the deformation attachment portions 12a and 12b provided at both ends thereof is provided with one deformation attachment portion 12a. The end of the insertion hole 10b of the hop-up cam member 10 is engaged with a deformation hole 10c provided with a common axis, and the other deformation attachment portion 12b is connected to the first support substrate portion 11a and the second support substrate portion 11c. The deformed mounting holes 11d and 11e are inserted and engaged. What is attached to one of the side plates 6b, 6b of the attachment member 6 via the attachment pin 17a and the fourth deformation shaft portion 9e of the hinge shaft 9 is an attachment auxiliary member. This attachment assisting member 17 is for increasing the strength when the attachment member 6 is attached to the first housing 2, and the first housing is provided with an attachment screw (not shown) through the three attachment holes 17c. 2 to the mounting portion 2c. As shown in FIG. 2, the long hole indicated by the instruction symbol 17b is an attachment hole for fixing an antitheft lock (not shown).

  The friction mechanism 20 includes the hinge shaft 9 and the support member 11 of the hop-up mechanism 5 and the friction torque generating means 4. The friction torque generating means 4 has a rotating cam portion 21a on one side, and the hinge shaft. 9 is rotatably inserted into the insertion hole 21b provided in the axial direction, and the engagement piece 21c is inserted and engaged with the engagement hole 11f provided in the second support substrate portion 11c of the support member 11. The rotation cam member 21 configured to rotate together with the second deformation shaft portion 9c of the hinge shaft 9 is inserted into and engaged with the deformation insertion hole 22a provided in the axial direction of the central portion thereof, and the rotation is restricted by the hinge shaft 9. Friction having a plurality of curved oil reservoirs 22b on the side surface interposed between the rotating cam member 21 and the second support substrate portion 11c of the support member 11. A third camshaft 9d of the hinge shaft 9 is provided in the deformable insertion hole 23b provided in the axial direction of the center of the shaft 22 with the fixed cam 23a on the side facing the cam 22 and the cam 21a of the rotary cam member 21. The fourth deformed shaft portion 9e of the hinge shaft 9 is inserted into the fixed cam member 23 that is rotationally restricted by being inserted, and the insertion holes 24a that are provided adjacent to the fixed cam member 23 in the axial direction of the central portion thereof. Are provided at the end of the hinge shaft 9 in a plurality of disc springs 24 that are arranged adjacent to each other and a deformation mounting hole 25a provided in the axial direction of the central portion in contact with the end of the plurality of disc springs 24. The fourth deforming shaft portion 9e is inserted and engaged, and the exposed end portion thereof is caulked with a predetermined caulking torque, whereby the rotating cam portions 21a of the rotating cam member 21 and the fixed cam member 23 are interposed via a plurality of disc springs 24. And fixed mosquito Part 23a to each other is constituted by a flat washer 25 which forms as a pressure contact state. The disc spring can be changed to a spring washer, rubber, or compression coil spring.

  Inner cam portions 21d and 23c having concentric and arcuate shapes projecting toward the inner peripheral side and the outer peripheral side of the rotary cam portion 21a and the fixed cam portion 23a of the rotary cam member 21 and the fixed cam member 23, respectively. The outer cam portions 21e and 23d are provided at different positions, and the inner cam portion 21d, when the rotating cam member 21 rotates, that is, when the support member 11 rotates, that is, when the second housing 3 is opened and closed. When the outer cam portions 21e and 23d come into contact with each other 23c, a strong friction torque is generated. The inner cam portions 21d and 23c and the outer cam portions 21e and 23d are provided with inclined portions 21f to 21i and inclined portions 23e to 23h, respectively, at both ends.

  Next, the operation of the case where two hinge devices A according to the present invention are used as the opening / closing device of the notebook computer 1 will be described.

  In a normal state in which the notebook computer 1 is not used, the first housing 2 and the second housing 3 are in a closed state (0 °) where they overlap each other. At this time, as shown in FIG. 7 to FIG. 10, the bottom plate 6 a and the mounting plate 6 i of the mounting member 6 are mounted on the mounting portion 2 c provided as a recess on the upper surface of the rear portion of the first housing 2. 16b is attached and the upper part is covered with the cover 2b. In addition, the second housing 3 is attached to the support member 11 via attachment holes 11i, 11i, 11i provided in the first support substrate 11a and support pieces 11b. As shown in FIG. 7, when the first housing 2 and the second housing 3 are in a closed state, the top 7 a of the cam slider 7 and the cam projection 10 a of the hop-up cam member 10. Is in the pressure contact state and pushes the hop-up cam member 10 in the clockwise direction, so that the rotational torque is transmitted to the support member 11 via the rotation transmission member 12, and the second casing is reached via this support member 11. 3 is pushed toward the first housing 2, the first housing 2 and the second housing 3 are held in a closed state where they overlap each other. Further, in this closed state, as shown in FIG. 11A, the outer cam portions 21e and 23d of the rotating cam portion 21a and the fixed cam portion 23a and the inclined portions 21h of the inner cam portions 21d and 23c. 23g, 21h, and 23f are in pressure contact with each other, and there is a slight gap between the outer cam portions 21e and 23d and the inner cam portions 21d and 23c.

  Thus, by maintaining the closed state of the first casing 2 and the second casing 3, the first casing 2 and the second casing 3 are locked in the closed state. A lock mechanism can be dispensed with.

  When the notebook personal computer 1 is used, when the second casing 3 is manually opened with respect to the first casing 2, the closing biasing force of the hop-up mechanism 5 and the rotation of the friction mechanism 20 described above are initially set. The resistance due to the pressure contact action of the outer cam portions 21e and 23d of the cam portion 21a and the fixed cam portion 23a is met, but when the opening angle exceeds about 15 °, the rotation of the friction mechanism 20 as shown in FIG. The pressure contact state between the outer cam portion 21e of the rotating cam portion 21a of the cam member 21 and the outer cam portion 23d of the fixed cam portion 23a of the fixed cam member 23 is relaxed, and the outer cam portions 21e and 23d and the inner cam portion 21d are relaxed. 23c is weakened, and as shown in FIG. 8, the cam convex portion 10a of the hop-up cam member 10 comes into contact with the cam portion 7b side of the cam slider 7, so that the hop The top cam member 10 is urged to rotate counterclockwise, and this rotational torque is transmitted to the support member 11 via the rotation transmission member 12, so that the second casing 3 attached to the support member 11 is automatically As shown in FIG. 9, it is opened up to a predetermined angle of 60 ° (also referred to as a hop-up angle).

  When the second housing 3 is opened with respect to the first housing 2 up to this hop-up angle, the pressing force against the hop-up cam member 10 by the cam slider 7 is stopped as shown in FIG. The rotating cam member 21 of the mechanism 20, the rotating cam portion 21a of the fixed cam member 23, the outer cam portion 21e of the fixed cam portion 23a, and the outer cam portion 23d are brought into a pressure contact state, and thereafter, as shown in FIG. Further, the rotating cam member 21 of the friction mechanism 20, the rotating cam portion 21a of the fixed cam member 23, the outer cam portions 21e and 23d of the fixed cam portion 23a, and the inner cam portions 21d and 23c are maintained in a pressure contact state, and the friction washer. 22 is pressed more strongly between the first support substrate portion 11 a and the second support substrate portion 11 c of the support member 11, so that the second housing 3 is in contact with the first housing 2. And the flip in the use angle range - will be opened stoppable stop. FIG. 10 shows this state.

  Therefore, the notebook personal computer 1 can be used in a stable holding state by stopping the second housing 3 at an arbitrary angle at which the second housing 3 can be freely stopped with respect to the first housing 2.

  When the second housing 3 is closed with respect to the first housing 2 after the notebook computer 1 is used, the second housing 3 is first closed by encountering resistance due to the friction torque of the friction mechanism 20, and then the friction mechanism. 20 rotation cam member 21, rotation cam portion 21a of fixed cam member 23, outer cam portions 21e and 23d of fixed cam portion 23a, and inner cam portions 21d and 23c are released from the press contact state, so that a relatively weak friction torque is obtained. The hop-up mechanism 5 is closed against the elastic resistance of the hop-up mechanism 5 and the hop-up mechanism 5 rotates and urges the hop-up cam member 10 in the closing direction from a closing angle of about 15 °. Is transmitted to the support member 11 via the rotation transmission member 12, and the second housing 3 is automatically closed. However, at this time, the inclined cam portions 21h and 23g of the rotating cam portion 21a and the outer cam portions 21e and 23d of the fixed cam portion 23a are in pressure contact with the inclined portions 21f and 23f of the inner cam portions 21d and 23c. The automatic closing torque with respect to the second housing 3 is buffered by the mechanism 5, and the second housing 3 is not closed suddenly with a noise to the first housing 2. Further, since the elastic means 8 uses large and small compression coil springs 8a and 8b having different diameters, the operation by the hop-up mechanism 5 can be made to feel soft.

  FIG. 14 shows another embodiment of the hinge device according to the present invention. The hinge device B according to the second embodiment is the same as the hinge device A of the first embodiment except for the configuration of the cam slider. The same. Therefore, the same components as those of the hinge device A of the first embodiment are indicated by the same reference symbols except for the hop-up cam member. The cam slider 32 of the hinge device B of the second embodiment is different from the cam slider 7 of the first embodiment in the width of the top portion. The width n ′ of the top portion 32a of the cam slider 32 of the second embodiment is wider than the width n of the cam slider 7 of the first embodiment and has a relationship of n <n ′.

  Therefore, when the hinge device A of the first embodiment and the hinge device B of the second embodiment are used as the opening / closing device of the notebook personal computer 1, the hinge device A is initially opened when the second housing 3 is opened with respect to the first housing 2. The cam convex portion 10 a of the hop-up cam member 10 is disengaged from the top portion 7 a of the cam slider 7, and then the cam convex portion 31 a of the hop-up cam member 31 of the hop-up mechanism 30 of the hinge device B is disengaged from the top portion 32 a of the cam slider 32. It will be. For this reason, the hop-up operation on the second casing 3 by the hop-up mechanisms 5 and 30 of the hinge device A and the hinge device B is more rapid than that in which the pair of hinge devices A and A simultaneously perform the hop-up operation. Therefore, the operability at the time of opening / closing the second casing 3 and the first casing 2 is improved.

  Next, as another embodiment for changing the start timing of the hop-up operation of the hinge device A and the hinge device B, the circumferential direction in which the hop-up cam members 10 and 31 of the hinge device A and the hinge device B are attached to the hinge shaft 9 You may make it change the position of. Even if it implements in this way, the timing which the cam convex parts 10a and 31a of the hop-up cam members 10 and 31 leave | separate from the top parts 7a and 32a of the cam sliders 7 and 32 can be changed. Operation can be reduced and operability can be improved.

  As described above, the hinge device according to the present invention is easy to assemble and can obtain a stable friction torque at the use angle of the second casing. When a pair of hinge devices that are devised for the up cam member are used as an opening / closing device, the second housing can be prevented from closing suddenly with respect to the first housing, improving operability. Among the portable devices, the present invention is particularly suitable as a hinge device or opening / closing device used for a notebook personal computer, or a portable device using these hinge devices or opening / closing devices.

A Hinge device B Hinge device 1 Notebook PC (mobile device)
2 First housing 2a Keyboard portion 3 Second housing 4 Friction torque generating means 5 Hop-up mechanism 6 Mounting member 6b Both side plates 7 Cam slider 8 Elastic means 9 Hinge shaft 10 Hop-up cam member 11 Support member 12 Rotation transmission Member 20 Friction mechanism 21 Rotating cam member 22 Friction washer 23 Fixed cam member 30 Hop-up mechanism 31 Hop-up cam member 32 Cam slider

Claims (9)

A hinge device that connects the first housing and the second housing so as to be openable and closable, and includes a hop-up mechanism and a friction mechanism that share a hinge shaft with each other. A mounting member that also serves as a spring case attached to the housing side, a cam slider that is slidably biased in one direction by elastic means in the mounting member, and a non-rotating shaft mounted on both side plates of the mounting member A hinged shaft, a hop-up cam member that is press-contacted to the cam slider and rotatably attached to the hinge shaft, and the first that is rotatably attached to the hinge shaft and located outside the attaching member . a supporting member for attaching the second housing, and the rotation transmitting member for transmitting rotation of the support member to the hop-up cam member, in configured, the full The friction mechanism is a friction torque generating means provided between the support member and the hinge shaft, and the friction torque generating means is inserted into the hinge shaft and rotated with the support member. A member, a fixed cam member fixed to the hinge shaft and provided adjacent to the rotating cam member, and the hinge shaft is inserted to press the fixed cam member and the rotating cam member together. A plurality of disc springs, and in the opening / closing angle range where the hop-up mechanism does not operate, the friction mechanism creates a stronger friction torque, and the second casing attached to the support member is fleece. A hinge device characterized by being stopped at the top .   The opening / closing angle range that causes the friction mechanism to create a stronger friction torque on the support member side is the closing angle range of the second casing and the closing angle range in the vicinity thereof and the predetermined opening / closing of the second casing. The hinge device according to claim 1, wherein the hinge device has a range equal to or larger than an angle. The rotation transmission member is constituted by a cylindrical member rotatably attached to the hinge shaft, one end of the rotation transmission member is engaged with the support member, and the other end is the hop-up cam. The hinge device according to claim 1, wherein the hinge device is engaged with a member. The friction torque generating means includes a rotating cam member that is inserted through the hinge shaft so as to rotate together with the support member, and a fixed cam member that is fixed to the hinge shaft and provided adjacent to the rotating cam member. A friction washer provided between the rotating cam member and the support member so as to be rotationally restricted by the hinge shaft, and the rotating cam member, the friction washer, the rotating cam member, and the fixed cam member are brought into pressure contact with each other. The hinge device according to claim 1, comprising: a plurality of disc springs provided by inserting the hinge shaft therethrough. A switchgear comprising a pair of hinge devices according to any one of claims 1 to 4, wherein the pair of hinge devices are shifted from each other at the start of operation of the hop-up mechanisms of the hop-up mechanisms. . 6. The switchgear according to claim 5, wherein the hop-up mechanism is configured to shift a start time of a hop-up operation by changing a shape of the cam slider of the hop-up mechanism. 6. The switchgear according to claim 5, wherein the hop-up mechanism is configured to shift a start time of a hop-up operation by changing a mounting position of the hop-up mechanism with respect to the hinge shaft of the hop-up mechanism. Opening and closing device characterized by. A portable device comprising the hinge device according to claim 1. A portable device comprising the switchgear according to claim 5.

Images