JP4917517B2 - Slide rotation mounting unit and mobile phone - Google Patents

Description

  The present invention relates to a slide rotation mounting unit for mounting a movable housing so as to rotate while sliding at least partially overlapping a holding base, and a mobile phone using the unit.

In a mobile phone, an electronic notebook, a personal computer, and other electronic devices, a thin display unit housing having a display unit is vertically long (for example, a mobile phone) or horizontally long (for example, a notebook type or other personal computer). Is fixed in a portrait or landscape orientation, it is inconvenient when viewing the display screen or performing an input operation while viewing the screen. In other words, depending on the type of input work and the display target when inputting data such as creating a document or creating a table and viewing the results and images on the screen, a landscape screen and a portrait screen may be suitable. is there.
Therefore, in the electronic apparatus as described above, the display unit casing is made a movable casing, which is rotated by 90 degrees as necessary, and converted into a vertically long state and a horizontally long state (for example, patents described later) Reference 1).

  For electronic devices that can be used by changing the position of the movable housing, the holding base can be pivotally attached to one end of the base housing having the input section by means of a hinge, or it can be used for a desktop separately from the input section and PC main body. Holding bases are installed, and a movable casing that is an input section casing is attached to these holding bases via a slide rotation mounting unit so as to partially overlap.

The inventors have already proposed a slide rotation mounting unit configured as shown in FIG. 6 to FIG. 8 in order to make the rotating operation of the movable housing smoother (Patent Document 2 described later).
This will be described below.
6 is a partially exploded perspective view of a foldable mobile phone in which a slide rotation mounting unit is used, FIG. 7 is a schematic perspective view of the mobile phone in FIG. 6, and FIG. It is a front view of a slide rotation unit when it exists in a posture at the time of a basic use state.

6 and 7, the holding base 3 overlaps the base casing 5 via a hinge 6 at one end of the base casing 5 of the mobile phone having a transmitter and an input unit (both not shown). It is connected so as to be foldable so as to open and close from 150 to 170 degrees open.
The holding base 3 that is standing at a predetermined angle in use is slid in a state where the lower portion of the movable casing 4 that is an LCD casing having a receiver (not shown) is overlapped via the slide rotation mounting unit b. It is attached to rotate.

As shown in FIG. 6, the slide rotation mounting unit b includes a base plate 1 that is attached to the holding base 3 by an appropriate number (four) of screws 1 a on the opposing surface of the holding base 3 and the movable housing 4, and is movable. And a plate cam 2 attached to the housing 4 by an appropriate number (three) of screws 2a.
The material of the base plate 1 and the plate cam 2 is, for example, a stainless plate.
The plate cam 2 is attached so as to rotate 90 degrees to the left and right by cam control while sliding a predetermined amount in the vertical direction with respect to the base plate 1 and to stop in that state.
Female screw bosses 20 and 10 corresponding to the screws 2a and 1a are formed on the plate cam 2 and the base plate 1 by, for example, fleshing.

A long-hole-shaped slide guide 11 extending in the up-down direction is formed at a substantially central portion of the base plate 1, and a plate cam is disposed on the base plate 1 on the lower extension of the center line in the width direction of the slide guide 11. Guide pins 12 projecting toward the installation side of the plate cam 2 are attached upright so that the two cam portions (outer peripheral contour portions) are in sliding contact. The guide pin 12 is formed with a flange portion 12a at the top, and a rotatable roller is attached to the contact portion with the outer peripheral portion of the plate cam 2 in order to reduce friction.
The plate cam 2 is provided with a mounting shaft 21 that is slidably and rotatably engaged with the slide guide 11 in a retaining state. The plate cam 2 is attached to the base plate 1 by the mounting shaft 21. Combined to rotate while sliding.
The mounting shaft 21 is tubular and has a flange portion 21a at one end, and the flange portion 21a is passed through the slide guide 11 in a state of being secured to both side rear surfaces of the slide guide 11 of the base plate 1 in a retaining manner. The shaft end is fixed by caulking to the center mounting hole 22 of the plate cam 2.

The guide pin 12 is guided to the outer peripheral portion of the plate cam 2 when the movable casing 4 is in the reference posture which is the basic use mode and when the movable housing 4 is rotated 90 degrees to the left and right from the reference posture. Each recess 23 is formed.
The recess 23 is a first recess 230 through which the guide pin 12 is guided when the plate cam 2 is in the reference posture (FIG. 8), and the guide pin 12 when the plate cam 2 is rotated 90 degrees clockwise from the reference posture. And a third recess 232 guided when the plate cam 2 is rotated 90 degrees counterclockwise from the reference posture.
Only one of the recesses 231 and 232 can be formed so that the plate cam 2 can rotate 90 degrees only in any one direction.

The plate cam 2 is always urged in the downward direction along the slide guide 11 by a spiral torsion spring 13 installed on the back side of the base plate 1.
As shown in FIG. 8, the torsion spring 13 includes a spiral coil portion 130, a fixed arm portion 131 continuous with the outer peripheral coil of the spiral coil portion 130, and a movable side continuous with the inner peripheral coil of the spiral coil portion 130. The arm part 132 is configured.
The distal end portion of the fixed-side arm portion 131 is locked or fixed to the rear-side upper end portion of the base plate 1, and the movable-side arm portion 132 is guided to the inner step portion of the flange 21 a of the mounting shaft 21. The plate cam 2 is urged in the downward direction by contacting the portion with the elastic force in the downward direction.
The spiral coil portion 130 of the torsion spring 13 is pressed to the back side of the base plate 1 by a pressing piece 14 (FIG. 8) cut and raised so as to protrude to the base plate 1 to the back side.

In order to attach the movable housing 4 to the holding base 3 by the slide rotation attachment unit b, the base plate 1 and the plate cam 2 are attached to the attachment shaft in a state where the elasticity of the torsion spring 13 acts on the plate cam 2 as described above. 21 are connected in advance so as to be slidable and rotatable.
The small screws 1a are passed from the back side of the holding base 3 to the screw guides 31 provided on the bottom plate 30 of the holding base 3, and the small screws 1a are formed on the surface of the base plate 1 facing the holding base 3. The base plate 1 is fixed to the holding base 3 by screwing into each female screw boss 10.
The other machine screws 2a are passed through the screw guides 41 provided on the bottom plate 40 of the movable housing 4 from the surface side of the movable housing 4, and these machine screws 2a are formed on the front side of the plate cam 2. Screwing into each female screw boss 20, the plate cam 2 is fixed to the back side of the movable housing 4.
When the movable casing 4 is attached to the holding base 3, the movable casing 4 is rotated when the movable casing 4 rotates after the attachment in order to avoid wear of the movable casing 4 and the upper surface of the central tubular portion of the hinge 6. 4 is attached in a state where the lower end of 4 does not contact (interfere with) the hinge 6.

  As described above, in the folding cellular phone in which the movable casing 4 is attached to the holding base 3 by the slide rotation mounting unit b, the movable casing 4 has the reference posture as shown in FIG. 7 (the display unit is in the reference display mode). When the slide rotation mounting unit b is in a certain vertically long position), the guide pin 12 of the base plate 1 is guided to the first recess 230 of the plate cam 2 as shown in FIG.

In order to convert the movable casing 4 from the reference posture to 90 degrees clockwise, for example, to convert to the horizontally long display mode, the movable casing 4 is rotated clockwise while being pushed up (or lifted) along the holding base 3. . At this time, the mounting shaft 21 rotates while sliding upward along the slide guide 11.
When the movable casing 4 is rotated 90 degrees clockwise, the guide pin 12 of the slide rotation mounting unit b is guided to the second recess 231 of the plate cam 2, and the movable casing 4 is rotated 90 degrees clockwise. Change posture to landscape state and stop.
When the movable casing 4 is rotated 90 degrees counterclockwise, the movable casing 4 changes its posture to a horizontally long state in the opposite direction of 180 degrees.
In a state in which the plate cam 2 is raised to the highest level along the base plate 1, the movable arm 132 of the torsion spring 13 exhibits a state in which it is inclined upward and viewed from the back side of the base plate 1.

In the cellular phone, the movable casing 4 is converted into a horizontally long posture and the guide pins 12 are guided to the left and right recesses 231 or 232, and at the same time, the display mode of the movable casing 3 is converted according to the posture. No switch is provided.
When the movable casing 4 returns from the horizontally long posture to the vertically long reference posture, a similar switch for adjusting the display mode to the posture is provided in the mobile phone.

According to the slide rotation mounting unit b already proposed by the inventors, the rotating slide operation of the movable housing 4 is extremely smooth due to the above-described configuration.
However, when the movable housing 4 is in the reference posture, the plate cam 2 attached to the movable housing 4 and spring-biased downward is guide pin 12 at one location of the recess 230 as shown in FIG. It is supported (held) by.
On the other hand, the plate cam 2 is only supported by the guide pin 12 at one of the recesses 231 or 232 even when the movable casing 4 is in a horizontally long posture rotated 90 degrees to any one of them.
Thus, in the state where the plate cam 2 that is spring-biased when the movable casing 4 is in each posture is supported by the guide pin 12 at any one of the recesses 230 to 232, the movable casing 4 7 is unstable because it easily swings in the left-right direction in FIG.
Japanese Patent Application Laid-Open No. 08-063259 Description and drawings attached to Japanese Patent Application No. 2007-129313

An object of the present invention is to stabilize the movable casing in a state in which the movable casing is attached to the holding base by this type of slide rotation mounting unit, and the object thereof is the movable casing 4 in each display mode of the electronic device. It is an object of the present invention to provide a slide rotation mounting unit that can prevent rattling.
Another object of the present invention is to provide a mobile phone that can be used by changing the attitude of a movable casing that is a receiver-side casing and that has a more stable attitude of the movable casing.

The present invention is configured as follows to solve the above-described problems.
That is, the first slide rotation mounting unit according to the present invention is a slide rotation that is mounted so as to rotate while sliding the movable housing in a state where at least a part thereof overlaps the front surface of the holding base used in a standing state at a predetermined angle. A mounting unit,
Comprising a base plate attached to the holding base side and a plate cam attached to the movable housing side on the opposing surface of the holding base and the movable housing;
The plate cam is attached to the base plate so as to be slidable and rotatable with a predetermined stroke in the vertical direction, and at least a pair of guide pins are erected so as to be located on both sides on a downward extension line in the plate cam slide direction. Attached to the shape,
The plate cam is spring-biased in the downward direction,
The outer periphery of the plate cam is recessed in a state where the guide pins are guided when the movable housing is in a basic posture in a basic use state and when the movable housing is rotated at least 90 degrees from the reference posture in at least one direction. The most important feature is that it is formed.

A second slide rotation mounting unit according to the present invention is a slide rotation mounting unit that is mounted so as to rotate while sliding a movable housing in a state where at least a part thereof overlaps a front surface of a holding base used in a standing state at a predetermined angle. Because
Comprising a base plate attached to the holding base side and a plate cam attached to the movable housing side on the opposing surface of the holding base and the movable housing;
To the base plate, the plate cam is attached so as to be slidable and rotatable in a vertical direction with a predetermined stroke, and a guide pin is attached upright on a downward extension line in the plate cam slide direction,
The plate cam is spring-biased in the downward direction,
Recesses are formed in the outer peripheral portion of the plate cam so that the guide pin is guided when the movable housing is in a basic posture in a basic use state and when rotated 90 degrees from the reference posture to at least one side. And
The base plate is biased by the spring immediately before the guide pin contacts each recess of the plate cam when the movable housing is in the reference posture and rotated 90 degrees from the reference posture to at least one side. The main feature is that a support piece is provided against which at least two of the outer peripheral portions of the plate cam abut against each other.

  A mobile phone according to the present invention comprises the first or second slide rotation mounting unit according to the present invention in order to solve the above-mentioned problems, and the holding base is attached to a transmission-side casing having an input portion, The main feature of the movable housing is that it is a receiving housing.

  According to the first slide rotation mounting unit of the present invention, the guide pin that supports the plate cam in a fixed posture when the movable casing is in the reference posture and when the movable housing is rotated 90 degrees from the reference posture to at least one side. Since at least one pair is attached so as to be located on both side portions on the downward extension line in the plate cam slide direction, rattling of the movable housing is prevented when incorporated in an electronic device.

  According to the second slide rotation mounting unit according to the present invention, the support piece provided on the base plate is configured such that when the plate cam is rotated 90 degrees from the reference posture to at least one side, the guide pin is connected to the plate cam. Since at least two locations of the outer peripheral portion of the plate cam abut against the spring bias just before contacting each recess, the backlash of the movable housing is prevented when incorporated in an electronic device with little backlash.

  According to the mobile phone according to the present invention, by using the slide rotation mounting unit according to the present invention, the posture of the movable casing which is the receiver-side casing having the display unit can be smoothly changed as described above. In addition, the posture is stabilized in various display modes by eliminating the backlash of the receiving housing.

With reference to FIG. 1 to FIG. 5, an optimal embodiment of a slide rotation mounting unit according to the present invention and an optimal embodiment of a foldable mobile phone using the same will be described.
First embodiment (corresponding to claims 2 to 5)
FIG. 1 is a partially exploded perspective view of a folding mobile phone using a slide rotation mounting unit according to the first embodiment of the present invention, and FIG. 2 is a reference posture (basic use state) of the movable housing of the mobile phone of FIG. FIG. 3 is a front view of the slide rotation mounting unit when the plate cam of the slide rotation mounting unit is rotated 90 clockwise from the state of FIG. FIG. 4 is a schematic plan view of the folding portable band phone in a state where the posture of the slide rotation mounting unit is changed from the state of FIG. 2 to the state of FIG.

  In the following description, parts of the same components as those of the mobile phone and the slide rotation mounting unit described with reference to FIGS. 6 to 8 are denoted by the same reference numerals and description thereof is omitted.

A slide rotation mounting unit a according to an embodiment of the present invention includes a holding base 3 that is used in a standing state at a predetermined angle, and a movable housing that is attached so as to partially overlap the front surface thereof (receiving-side housing of a mobile phone). 4 is attached.
The slide rotation mounting unit a of this embodiment includes a base plate 1 attached to the holding base 3 side, a plate cam 2 attached to the movable housing 4 side, a torsion spring on the opposing surface of the holding base 3 and the movable housing 4. 13 and the mounting shaft 21.

The base plate 1 is configured in substantially the same manner as the base plate 1 in the conventional slide rotation mounting unit b shown in FIG.
The configurations of the plate cam 2 and the torsion spring 13 are also substantially the same as those in the conventional mounting unit b.

A plate cam 2 is attached to the base plate 1 so as to slide along a long hole-like slide guide 11 by an attachment shaft 21 and to be rotatable.
The plate cam 2 is always urged in the downward direction by a torsion spring 13 interposed between the base plate 1 and the holding base 3.

The plate cam 2 is cam-controlled so as to stop when the movable casing 4 is in the reference posture in the basic use state and when it is rotated 90 degrees from the reference posture to at least one side.
One arm portion (movable side arm portion) 132 of the torsion spring 13 is supported or locked inside the outer peripheral portion of the flange portion 21 a of the mounting shaft 21.

In the base plate 1, the guide pins 12 come into contact with the corresponding recesses 23 of the plate cam 2 when the movable casing 4 is in the reference posture and rotated 90 degrees from the reference posture to at least one side. Each support piece 15 is provided so that at least two portions of the outer peripheral portion of the plate cam 2 abut against each other just before the spring bias.
In this embodiment, the support piece 15 abuts on the outer periphery of the convex portion between the pin-like projections 150 and 150 where the symmetrical position of the inlet portion of each concave portion 23 of the plate cam 2 abuts and the concave portion 23 of the plate cam 2. Each of the protruding pieces 151 and 151 that are bent and raised is included.

The slide rotation mounting unit a is assembled, for example, in the following manner.
The guide pin 12 has a roller 12b (FIG. 1) attached to the shaft portion, the shaft portion is inserted into the mounting hole formed in the base plate 1 from the front surface side, and the shaft end is the back surface of the mounting hole (not indicated). Clamp to the side edge.
After fixing the shaft end of the mounting shaft 21 to the front peripheral edge of the mounting hole 22 (FIG. 1) of the plate cam 2, the movable arm portion 132 of the torsion spring 13 is guided to the inside of the flange portion 21a of the mounting shaft 21. Then, the arm portion 131 on the fixed side of the torsion spring 13 is locked to the locking piece (not indicated) formed on the upper end of the back surface of the base plate 1 so that it does not float and is not detached in the back surface direction. Fix it.

  The procedure for constructing a foldable mobile phone by attaching the base plate 1 of the slide rotation mounting unit a assembled as described above to the holding base 3 and attaching the plate cam 2 to the movable housing 4 is as follows. It is the same as that of the conventional example.

In the foldable mobile phone of the above embodiment, when the movable housing 4 is in the reference posture (vertical posture in which the display unit is in the reference display mode), the slide rotation mounting unit a is a guide pin of the base plate 1 as shown in FIG. 12 is in a position immediately before it hits the first recess 230 of the plate cam 2.
The plate cam 2 includes a support piece 15 composed of pin-shaped protrusions 150 and 150 that are in contact with both side symmetrical positions of the entrance portion of the first recess 230, and a protrusion between the recess 230 and the recesses 231 and 232. It is supported in a state where it floats from the guide pin 12 by a predetermined amount by the support piece 15 made up of the protrusion pieces 151 and 151 that abut against the outer periphery of the part.

In order to convert the movable casing 4 from the reference posture to a horizontally long display mode rotated 90 degrees clockwise, for example, the movable casing 4 is rotated clockwise while being pushed up along the holding base 3.
At this time, the plate cam 2 rotates while sliding upward along the slide guide 11. When the plate cam 2 rotates, the guide pin 12 contacts the outer periphery of the convex portion between the first concave portion 230 and the second concave portion 231 of the plate cam 2, and the plate cam 2 is guided in the rotation direction. .
The plate cam 2 rotates as described above and immediately before the guide pin 12 abuts into the second recess 231 of the plate cam 2 as shown in FIG. At the same time, the outer periphery of the convex portion between the first concave portion 230 and the second concave portion 231 is supported by the support piece 15 consisting of one projection piece 151. The That is, the plate cam 2 is rotated 90 degrees clockwise, and is supported or held by each support piece 15 in a state of floating by a predetermined amount from the guide pin 12, and the movable housing 4 is rotated 90 degrees clockwise as shown in FIG. The posture is converted into a rotated landscape state.
When the movable housing 4 is rotated 90 degrees counterclockwise from the reference posture, the movable housing 4 changes its posture to a horizontally long state that is 180 degrees opposite to that in FIG. At this time, the state in which the plate cam 2 is supported or held by the respective support pieces 15 is opposite to the state shown in FIG.
When the plate cam 2 is raised to the highest level along the base plate 1, the arm 132 on the movable side of the torsion spring 13 is inclined to the right when viewed from the back side of the base plate 1.

  According to the slide rotation mounting unit of the embodiment, the support piece 15 provided on the base plate 1 is such that the guide pins 12 of the plate cam 2 are arranged when the plate cam 2 is rotated 90 degrees from the reference posture to one side. Immediately before contacting the recess 23, the plate cam 2 is supported against the outer peripheral portion of the plate cam 2 against the spring bias, so that the plate cam 2 is supported. The rattle is prevented.

  According to the mobile phone of the above-described embodiment, the posture of the movable housing 4 that is the receiving-side housing having the display unit is set as described above with respect to the holding base 3 by using the slide rotation mounting unit a of the above-described embodiment. And can be used with smooth changes, and the attitude of the display-side housing can be stabilized in various display modes by eliminating rattling of the receiving-side housing.

Second embodiment (corresponding to claim 1)
FIG. 5 is a schematic front view showing a slide rotation unit (the holding base 3 and the movable housing 4 are omitted) according to the second embodiment of the present invention.
In this embodiment, instead of forming the plurality of support pieces 15 as described above on the base plate 1, a pair of the base plate 1 is positioned on both sides on the downward extension line in the plate cam slide direction. Guide pins 120 and 121 are attached upright.

On the other hand, the guide pins 120 and 121 are guided to the outer peripheral portion of the plate cam 2 when the movable casing 4 of FIG. 4 is in the basic posture in the basic use state and rotated 90 degrees from the reference posture. Recesses 23a and 23b are respectively formed in the state.
In this embodiment, the recesses 23a and 23b are formed in the recesses 233 and 234 in which the guide pins 120 and 121 are guided when the plate cam 2 (that is, the movable housing) is in the reference posture. The guide pins 120 and 121 are guided when the concave portions 235 and 236 to which the guide pins 120 and 121 are guided when rotated 90 degrees in the direction and the plate cam 2 is rotated 90 degrees counterclockwise from the reference posture. It is comprised from the recessed parts 237 and 238 which are.

According to the slide rotation mounting unit a of the second embodiment, the plate cam 2 is supported in a fixed posture when the movable housing 4 is in the reference posture and when the movable housing 4 is rotated 90 degrees in any direction from the reference posture. A pair of guide pins 120 and 121 are attached, and the other plate cam 2 is formed with recesses 23a and 23b for guiding the guide pins 120 and 121 when the plate cam 2 is in each posture. When the unit a is incorporated in an electronic device, the movable housing is prevented from rattling.
Since the other structure and effect of the attachment unit of 2nd Embodiment are the same as that of the attachment unit of 1st Embodiment, those description is abbreviate | omitted.

  In each of the above embodiments, a roller can be attached to the shaft portion of the mounting shaft 21 to reduce the friction of the bearing portion.

The above embodiment is an example in which the slide rotation mounting unit a according to the present invention is used in a foldable mobile phone. The mounting unit a mounts the holding base 3 that slides on the base housing 5 and holds the holding base 3. The same can be used when the movable housing 4 is mounted on the base 3.
In addition, the mounting unit a is provided when a desktop holding base is installed separately from the input unit and the PC main body, and a movable housing which is a display unit side housing is attached to these holding bases so as to partially overlap. Can be used as well.

1 is a partially exploded perspective view of a foldable mobile phone using a slide rotation mounting unit according to a first embodiment of the present invention. FIG. 2 is an enlarged plan view of a slide rotation mounting unit in the mobile phone of FIG. 1. FIG. 3 is a plan view of a state in which a plate cam of the slide rotation mounting unit is rotated 90 degrees clockwise from the reference state of FIG. 2. FIG. 4 is a schematic plan view of the folding portable phone in a state where the slide rotation mounting unit has changed its posture to the state of FIG. 3. It is a schematic front view which shows the slide rotation unit (The holding base 3 and the movable housing | casing 4 are abbreviate | omitted) of 2nd Embodiment which concerns on this invention. It is a partial exploded perspective view of a mobile phone in which a conventional slide rotation mounting unit is used. 6 is a schematic perspective view of the mobile phone. It is a front view of a slide rotation unit when the movable housing | casing of the mobile telephone of FIG. 7 is in a reference | standard attitude | position (at the time of a basic use state).

Explanation of symbols

a, b Slide / rotation mounting unit 1 Base plate 10, 20 Female thread boss 11 Slide guide 12, 120, 121 Guide pin 12a Flange part 13 Torsion spring 130 Spiral coil part 131 Fixed arm part 132 Movable arm part 15 Supporting piece 150 Pin-like protrusion 151 Projection piece 2 Plate cam 21 Mounting shaft 21a Flange 23, 23a, 23b Recess 3 Holding base 4 Movable casing 5 Base casing 6 Hinge

Claims (5)

A slide rotation mounting unit for mounting the movable housing so as to rotate while sliding in a state where at least part of the holding base is used in a standing state at a predetermined angle,
Comprising a base plate attached to the holding base side and a plate cam attached to the movable housing side on the opposing surface of the holding base and the movable housing;
The plate cam is attached to the base plate so as to be slidable and rotatable with a predetermined stroke in the vertical direction, and at least a pair of guide pins are erected so as to be located on both sides on a downward extension line in the plate cam slide direction. Attached to the shape,
The plate cam is spring-biased in the downward direction,
The outer periphery of the plate cam is recessed in a state where the guide pins are guided when the movable housing is in a basic posture in a basic use state and when rotated 90 degrees in at least one direction from the reference posture. Is formed,
A slide rotation mounting unit characterized by that. A slide rotation mounting unit for mounting the movable housing so as to rotate while sliding in a state where at least part of the holding base is used in a standing state at a predetermined angle,
Comprising a base plate attached to the holding base side and a plate cam attached to the movable housing side on the opposing surface of the holding base and the movable housing;
To the base plate, the plate cam is attached so as to be slidable and rotatable in a vertical direction with a predetermined stroke, and a guide pin is attached upright on a downward extension line in the plate cam slide direction,
The plate cam is spring-biased in the downward direction,
On the outer peripheral portion of the plate cam, each recess is in a state in which the guide pin is guided when the movable housing is in a basic posture in a basic use state and when it is rotated 90 degrees from the reference posture in at least one direction. Formed,
The base plate has the spring biased immediately before the guide pin comes into contact with each concave portion of the plate cam when the movable housing is in the reference posture and rotated at least 90 degrees in one direction from the reference posture. A support piece against which at least two of the outer peripheral portions of the plate cam abut against each other is provided,
A slide rotation mounting unit characterized by that. The slide rotation mounting unit according to claim 2, wherein the support piece includes a pin-like protrusion against which a symmetrical position of an inlet portion of each concave portion of the plate cam abuts. The slide rotation mounting unit according to claim 3, wherein the support piece further includes a protrusion piece that abuts against an outer periphery of the convex portion between the concave portions of the plate cam. 5. The slide rotation mounting unit according to claim 1, wherein the holding base is attached to a transmitting side housing having an input unit, and the movable housing is a receiving side housing. Mobile phone.

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