JP2010109821A - Turnable housing connecting apparatus and method, and portable device employing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing connecting apparatus improving connection strength of housings by preventing play of the housings with relatively simple configuration. <P>SOLUTION: The housing connecting apparatus (50) for turnably connecting a first housing (6) and a second housing (7), has: a first plate member (1) mounted on the first housing and comprising a first shaft portion (10a) and a second shaft portion (10b) separated in a longitudinal direction by a predetermined distance; a second plate member (2) mounted on the second housing and comprising a first hook portion (20a) and a second hook portion (20b) to be engaged with the first shaft portion and the second shaft portion, respectively; and a pair of engaging means (5a, 5b) provided to the second housing correspondingly to the first and second hook portions, respectively. In the state where one of the first and second shaft portions is engaged with one of the first and second hook portion, the other of the first and second shaft portions is engaged with corresponding one of the pair of engaging means. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a portable device such as a mobile phone, a PDA (Personal Digital Assistant), and a notebook computer, and more particularly to a case connecting apparatus and method for a portable device having a rotatable case.

  In recent years, many portable devices such as mobile phones are commercially available that can be displayed horizontally or vertically by rotating, as well as those that open and close the display unit. An example of a structure for connecting the display units so as to be rotatable is disclosed in Patent Document 1 and the like.

JP2008-035022

  However, when two housings are connected so as to be relatively rotatable as described above, it is not easy to prevent minute rattling between the housings.

  For example, as shown in FIG. 10, the display-side housing 7 is covered with the operation-side housing 6 so as to be overlapped, and the display-side housing 7 is rotated 90 ° as shown in FIG. “T-shaped state” which is a horizontally long screen by moving it, and further rotating 90 ° as shown in FIG. Consider a portable device that has a “portrait state” that overlaps with.

  As described above, the two rotatable casings rotate while sliding, so that at the respective stopped positions, some play space is required to perform the next sliding and rotation. This can cause minute backlash of the housing.

  When making a call with a mobile phone, as shown in FIGS. 12 and 13, the mobile phone is often set in a vertically long state and the ear is pressed in the direction of the arrow 45. In this case, a force to bend in the direction of the arrow 45 is applied, and a gap d is likely to be generated between the casings as shown in FIG. In order to prevent such backlash in the thickness direction of the casing, it is necessary to improve the backlash prevention structure and the component strength with high accuracy.

  Further, when a vertically long portable device is dropped with the display-side housing 7 facing down, it receives an impact in the direction of the arrow 47 shown in FIG. It is also necessary to take.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a housing connection device capable of preventing backlash of the housing with a relatively simple configuration and improving the connection strength of the housing. It is to provide a method and a portable device using the method.

  A housing coupling device according to the present invention is a housing coupling device that pivotably couples a first housing and a second housing, and is attached to the first housing and is predetermined in the longitudinal direction of the housing. A first plate member having a first shaft portion and a second shaft portion that are separated from each other, and a first plate member that is attached to the second housing and engages with the first shaft portion and the second shaft portion, respectively. A second plate member having a first collar part and a second collar part, and a pair of engagement means provided on the second housing corresponding to the first collar part and the second collar part, respectively. And one of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, and the longitudinal directions of the first housing and the second housing are the same. In this state, the other of the first shaft portion and the second shaft portion is engaged with the corresponding one of the pair of engaging means.

  A case coupling method according to the present invention is a case coupling method for pivotally connecting a first case and a second case, the first case being separated from the first case by a predetermined distance in the longitudinal direction of the case. A first plate member having a first shaft portion and a second shaft portion is provided, and a first rod for engaging the first shaft portion and the second shaft portion in the second housing, respectively. A second plate member having a portion and a second flange, and a pair of engagement means respectively corresponding to the first flange and the second flange, the first case and the second case One of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, and the longitudinal directions of the first housing and the second housing are the same. When rotated so that the other is, the other of the first shaft portion and the second shaft portion is engaged with the corresponding one of the pair of engaging means.

  The portable device according to the present invention is a portable device capable of changing a housing shape, and is capable of rotating the first housing, the second housing, the first housing, and the second housing. A first plate having a first shaft portion and a second shaft portion which are attached to the first housing and are separated from each other by a predetermined distance in the longitudinal direction of the housing. A second plate member attached to the second housing and having a first collar part and a second collar part for engaging with the first shaft part and the second shaft part, respectively, A pair of engaging means provided on the second housing corresponding to the first flange and the second flange, respectively, and one of the first shaft and the second shaft is In a state where the first casing and the second casing are engaged with one of the first flange and the second flange and the longitudinal directions of the first casing and the second casing are the same, the first shaft section and the second casing The other two axes portions correspond to one and the engagement of the pair of engaging means, characterized in that.

  According to the present invention, it is possible to prevent backlash of the housing with a relatively simple configuration and to improve the connection strength of the housing.

1. Configuration FIG. 1 is a partially exploded perspective view of a case coupling device according to an embodiment of the present invention, FIG. 2 is a view showing a movable plate and a locking tool attached to the display side case in FIG. 1, and FIG. It is a figure which shows the base board attached to the operation side housing | casing in FIG. However, in FIG. 1, the case coupling device in the “T-shaped state” is illustrated for the structure description. Hereinafter, an operation in which the operation side casing (first casing) and the display side casing (second casing) rotate while relatively sliding is referred to as “rotation”.

  As shown in FIG. 1, the case coupling device 50 according to the present embodiment includes a base plate (first plate member) 1 attached to the operation side case 6 and a movable plate (first plate) attached to the display side case 7. 2 plate member) 2. The base plate 1 is provided with first and second shaft pins 10a and 10b that are separated from each other by a predetermined distance in the longitudinal direction of the housing, and the movable plate 2 includes first and second shaft pins 10a and 10b. First and second hook-shaped portions 20a and 20b that can be engaged with each other are formed. As will be described later, the base plate 1 and the movable plate 2 are connected via a spring 3 and an attachment shaft 4 and operate so as to rotate relatively.

  The mounting shaft 4 is a short hollow (pipe shape) having a flange portion 40 at one end, the shaft portion passes through the curled portion of the movable arm 30 of the spring 3, and the shaft end passes through the guide slit 11 of the base plate 1. It slidably penetrates and is fixed to a mounting portion 21 formed at a substantially intermediate position between the flanges 20a and 20b of the movable plate 2. As a result, the mounting shaft 4 is fixed to the mounting portion 21 and can slide in the guide slit 11 in a retaining state.

  As shown in FIG. 2, the display-side housing 7 is spaced apart from the movable plate 2 by a predetermined distance in the longitudinal direction, and has a pair of engagement tools (hooks) 5a at positions corresponding to the flanges 20a and 20b, respectively. 5b is fixed. The engaging tools 5a and 5b are disposed so as to be engaged with either the first or second shaft pin 10a or 10b, and at the center of rotation of the first or second shaft pin 10a or 10b. The engagement tool 5 is configured to engage with a shaft pin (10a or 10b) with which the hook-shaped portions 20a and 20b are not engaged.

  More specifically, the engaging tool 5b is attached to the display-side casing 7 so as to hit the second shaft pin 10b in a state where the casing is closed (see FIG. 4), and the engaging tool 5a is in a vertically long state ( 6), the display-side housing 7 is attached so as to hit the first shaft pin 10a. Further, when the housing is closed or in the vertically long state, the engaging tools 5a and 5b are both the first and second shaft pins 10a when the display-side housing 7 rotates with respect to the operation housing 6. , 10b functions as a rotation stopper.

  As shown in FIG. 2, the locking tool 5 a and the locking tool 5 b are separated from each other by the locking surface 8 that suppresses rattling in the rotation direction of the display-side housing 7, and a gap is opened between the housings. And a locking surface 9 that suppresses rattling by improving the strength against impacts. In the present embodiment, the locking tools 5a and 5b are configured by U-shaped hooks, and the U-shaped hooks have the U-shaped bottom surface as a locking surface 8 corresponding to the rotation direction, and the inner surfaces sandwiched on both sides are locked. Functions as surface 9. Further, the engagement tools 5a and 5b are configured to be engaged below the head while holding the shaft portion of the shaft pin 10a or 10b (details will be described later with reference to FIG. 6C). . The engaging tools 5a and 5b are preferably fixed by fixing means such as screws that can be adjusted in position.

  As shown in FIG. 3, a guide slit 11 is formed in the base plate 1, and the guide slit 11 has an arc centered on the first shaft pin 10a and an arc centered on the second shaft pin 10b. Has a shape that intersects at a substantially intermediate position between the first and second shaft pins 10a and 10b, and has three concave portions 11a to 11c and one convex portion 11d. The intermediate position between the first and second shaft pins 10a and 10b is not necessarily a substantially midpoint on the straight line, and may be an intermediate point equidistant from the shaft pins 10a and 10b. . As described above, the mounting shaft 4 is slidable along the guide slit 11.

  Further, restricting pieces 14a and 14b are provided at both ends in the longitudinal direction of the base plate 1 and in the vicinity of the shaft pins 10a and 10b. The restricting pieces 14a and 14b are engaged with the shaft pins 10a and 10b corresponding to the flanges 20a and 20b of the movable plate 2, and the shaft pins 10a and 10b corresponding to the flanges 20a and 20b. It has the function of regulating the movement of the movable plate 2 in a state that does not prevent it from leaving.

  As shown in FIG. 1, the spring 3 biases the movable plate 2 via the mounting shaft 4, and regulates the operation of the movable plate 2 together with the guide slit 11 and the mounting shaft 4 that slides along the guide slit 11. A torsion (torsion) spring is used as the spring 3, and the curled portion of the movable arm 30 is engaged with the mounting shaft 4, while the curled portion of the fixed arm 31 is provided on the back side of the base plate 1. It is locked by a shaft portion 13 with a hook.

2. Operation Next, the operation of the housing coupling apparatus according to the present embodiment will be described in detail with reference to FIGS.

  FIG. 4 is a diagram illustrating an engagement state of the locking tool when the housing coupling apparatus according to the present embodiment is in the “closed state”, and FIG. 5 is a housing coupling apparatus according to the present embodiment in the “T-shaped state”. FIG. 6A is a plan view showing the engagement state of the locking tool in the casing coupling device in the “vertically long state”, FIG. 6B is a side view seen from the longitudinal direction, and FIG. FIG. 7C is an enlarged view of a main part showing an engaged state of the locking tool of FIG. 6B, and FIG. 7 is a diagram for explaining an effect when a vertical force is applied to the display-side casing. .

  As described above, the guide slit 11 of the base plate 1 has a “<” shape having three concave portions 11 a to 11 c described below.

  The first recess 11a is one end of an arc centered on the shaft pin 10a and one end of an arc centered on the shaft pin 10b. As shown in FIG. 5, when the first and second flange-shaped portions 20a and 20b of the movable plate 2 are engaged with the first and second shaft pins 10a and 10b, the mounting shaft 4 is spring-loaded. 3 is a concave portion guided by the biasing force 3.

  The second recess 11b is the other end of the arc centered on the shaft pin 10a. When the movable plate 2 is rotated 90 ° about the first shaft pin 10a, the mounting shaft 4 of the spring 3 is It is a recessed part guided by urging | biasing. For example, as shown in FIG. 5, each hook-shaped portion 20a is engaged with the corresponding shaft pin 10a and the other hook-shaped portion 20b is not engaged (closed state shown in FIG. 4). At the time of rotation (here, clockwise rotation) to the state where 20a, 20b is engaged with the corresponding shaft pin 10a, 10b, or the reverse rotation (counterclockwise rotation) The shaft 4 is a recess guided by the bias of the spring 3.

The third recess 11c is the other end of the arc centered on the shaft pin 10b. The third recess 11c rotates from the T-shaped state shown in FIG. 5 to the vertically long state shown in FIG. The mounting shaft 4 is a recess that is guided by the bias of the spring 3 in the other direction (90 ° rotation in the clockwise direction) around the second shaft pin 10 b.

  When the operation of rotating the casing is performed, the position of the mounting shaft 4 of the movable plate 2 is the position of the second recess 11b when the operation-side casing 6 and the display-side casing 7 shown in FIG. It is in. Further, in a T-shaped state in which the display-side housing 7 is 90 ° lateral to the operation-side housing 6 shown in FIG. 5, the position of the mounting shaft 4 of the movable plate 2 is the position of the first recess 11a. is there. Further, as shown in FIG. 6, in the vertically long state in which the display side housing 7 is rotated and opened with respect to the operation side housing 6, the position of the mounting shaft 4 is at the position of the third recess 11 c. As described above, the movable plate 2 moves through the mounting shaft 4 guided by the guide slit 11, whereby the display side housing 7 can be moved to each state with respect to the operation side housing 6.

  As described above, in the closed state and the vertically long state in which the operation-side casing 6 and the display-side casing 7 have the same longitudinal direction as shown in FIGS. 4 and 6, the engaging tools 5a and 5b are both connected to the display-side casing. When the body 7 rotates with respect to the operation housing 6, it functions as a rotation stopper for the shaft pins 10a and 10b. In this embodiment, the concave portions 11b and the concave portions 11c of the guide slit 11 are slightly extended in order to make the engaging tools 5a and 5b function as a rotation stopper. That is, the recesses 11b and 11c are extended so that the engaging tools 5a and 5b abut against the shaft pins 10a and 10b before the mounting shaft 4 abuts against the recess 11b or the recess 11c of the guide slit 11. .

  As described above, when the housing shown in FIG. 4 is closed, the first hook-shaped portion 20a of the movable plate 2 is pressed against the first shaft pin 10a by the urging force of the spring 3 applied to the mounting shaft 4. In addition, since the engagement tool 5b is pressed against the second shaft pin 10b, the rotation is stopped at two points separated in the longitudinal direction. Can be suppressed stably.

  When the casing shown in FIG. 6 is in a vertically long state, the urging force of the spring 3 presses the second hook-shaped portion 20b of the movable plate 2 against the second shaft pin 10b, and the engaging tool 5a is the first. Therefore, the rotation is stopped at two points separated in the longitudinal direction, and the play in the rotation direction of the display-side housing 7 in the vertically long state can be stably suppressed.

  As described above, by providing the engagement tools 5a and 5b, the distance between the two pressed points becomes long, so that the accuracy of the rotation position can be easily obtained, and rattling in the rotation direction can be strongly suppressed. In particular, in the vertically long state as shown in FIG. 6, the operation side housing 6 and the display side housing 7 are supported by the two shaft pins 10b and 10a in the longitudinal direction of the apparatus. The impact load due to the drop or the like shown is dispersed, and the proof strength against the drop impact can be improved.

  As described above, the locking tool 5a and the locking tool 5b are respectively provided with the locking surface 8 and the housing for suppressing the backlash in the rotation direction of the display side housing 7 in order to give the locking device 5 the backlash suppression. Both are provided with a locking surface 9 that prevents the gaps from separating from each other and improves the strength against impact and suppresses rattling. In the present embodiment, the locking tools 5a and 5b are configured by U-shaped hooks, and the U-shaped hooks have the U-shaped bottom surface as a locking surface 8 corresponding to the rotation direction, and the inner surfaces sandwiched on both sides are locked. Functions as surface 9.

  Furthermore, as shown in FIG.6 (c), the engaging tools 5a and 5b are comprised so that it may engage on the lower side of a head, holding the axial part of the axial pin 10a or 10b.

  The engaging tools 5a and 5b are made of a member different from the display-side casing 7, and are fixed by means such as screws 22. By using an adjustable fixing means such as a screw, the attachment position of the engagement tool 5 to the display-side casing 7 can be adjusted, and the engagement position can be finely adjusted.

  Each of the shaft pins 10a and 10b has a wide head portion 13 with respect to the shaft portion 12, and the engaging tools 5a and 5b engage with the shaft portion 12 below the head portion 13 while holding the shaft portion 12. It is constituted as follows. In addition, you may comprise the wide head 13 by a flange part.

  With this configuration, the engaging tools 5a and 5b are fitted under the heads 13 of the shaft pins 10a and 10b, so that the display-side housing 7 and the operation-side housing 6 are connected in a vertically long state. Even when a load that is bent in the thickness direction (indicated by arrow 45 in FIG. 13) is applied, the phenomenon that the casings 6 and 7 are separated from each other and a gap is opened between them can be suppressed, and the mobile phone is strongly pressed against the ear during a call. Even if it performs, sufficient intensity | strength can be ensured with respect to the bending force.

  Further, as shown in FIG. 6 (c), the display side housing 7 is formed with a recess mounting portion 16 of the engaging tool 5, and avoids the head 13 of the shaft pins 10a and 10b. A bent portion 17 is formed in the engaging tool 5 so that the tip of the engaging portion 5 engages with the shaft portion 12. By providing the recessed portion attaching portion 16 and the bent portion 17, it is possible to engage the shaft portion 12 while avoiding the head portion 13 while the engaging tool 5 is hidden from the display-side housing 7.

  The shapes of the locking tools 5a and 5b are not limited to those described above, and several modifications are possible.

  FIG. 8 and FIG. 9 are schematic configuration diagrams respectively showing a case coupling device according to another embodiment of the present invention. As shown in FIG. 8, the locking tools 5 a and 5 b may have a hook shape including only the locking surface 8, and may be configured to suppress only rattling in the rotation direction. Furthermore, as shown in FIG. 9, the locking tools 5 a and 5 b are formed into a hook shape having only the locking surface 9, and the shaft pins are brought into contact only in the longitudinal direction to prevent the housings from separating and opening a gap. The strength against impact may be improved.

  The present invention is applicable to a hinge portion of a mobile terminal such as a mobile phone or a PDA.

It is a partial exploded perspective view of a case connection device by one embodiment of the present invention. It is a figure which shows the movable plate and latching tool which were attached to the display side housing | casing in FIG. It is a figure which shows the base board attached to the operation side housing | casing in FIG. It is a figure which shows the engagement state of the locking tool in the housing closed device by this embodiment in the "closed state." It is a figure which shows the housing | casing coupling device by this embodiment in a "T-shaped state". (A) is a top view which shows the engagement state of the locking tool in the housing | casing coupling device in "vertically long state", (b) is the side view seen from the longitudinal direction, (c) is FIG.6 (b). It is a principal part enlarged view which shows the engagement state of a locking tool. It is a figure for demonstrating the effect when the force of the vertical direction is added to the display side housing | casing. FIG. 8 is a diagram showing another embodiment of the present invention. FIG. 9 is a diagram showing another embodiment of the present invention. FIG. 10 is a perspective view showing the “closed state” of the mobile phone. FIG. 11 is a perspective view showing a “T-shaped state” of the mobile phone. FIG. 12 is a perspective view showing a “portrait state” of the mobile phone. FIG. 13 is a schematic diagram for explaining a problem that the housing opens in the thickness direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base plate 2 Movable plate 4 Mounting shaft 5 Engagement tool 5a First engagement tool 5b Second engagement tool 6 Operation side housing 7 Display side housing 8 Locking surface 9 Locking surface 10 Axial pin 10a First 1 shaft pin 10b second shaft pin 11 guide slit 11a first recess (end of guide slit)
11b 2nd recessed part (edge part of a guide slit)
11c 3rd recessed part (edge part of a guide slit)
12 Shaft portion of shaft pin 13 Head portion 16 of shaft pin Recess mounting portion 17 Bending portion 20a First hook-like portion 20b Second hook-like portion 50 Case coupling device

Claims (19)

A housing connecting device that rotatably connects a first housing and a second housing,
A first plate member attached to the first housing and having a first shaft portion and a second shaft portion separated by a predetermined distance in the longitudinal direction of the housing;
A second plate member attached to the second housing and having a first collar part and a second collar part for engaging with the first shaft part and the second shaft part, respectively;
A pair of engaging means provided in the second casing in correspondence with the first and second collars,
One of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, and the longitudinal direction of the first housing and the second housing is In the same state, the other of the first shaft portion and the second shaft portion engages with a corresponding one of the pair of engaging means. In a state where one of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, the first housing and the second housing are closed. The state in which the other of the first shaft portion and the second shaft portion is engaged with the other of the first flange portion and the second flange portion is the first housing and the second housing. The casing connecting device according to claim 1, wherein the casing connecting device is in a vertically opened state. One of the first flange portion and the second flange portion of the second plate member is engaged with either the first shaft portion or the second shaft portion of the first plate member and becomes the center of rotation. The housing connecting apparatus according to claim 1, further comprising attachment means for rotatably attaching the second plate member to the first plate member. The attachment means includes
The first plate member has a shape in which an arc centered on the first shaft portion and an arc centered on the second shaft portion intersect at an intermediate position between the first shaft portion and the second shaft portion. A formed guide slit;
An attachment shaft that slidably penetrates the guide slit and joins the first plate member and the second plate member via biasing means;
The housing connecting device according to claim 3, wherein the mounting shaft is urged toward the end of each arc of the guide slit by the urging means. 5. The pair of engagement means is configured to lock the rotation of the second plate member relative to the first plate member before the mounting shaft contacts the end portion of the guide slit. The case coupling device described. The case coupling device according to claim 5, wherein a length of the guide slit is set so as not to be a stopper of the mounting shaft. Each of the first shaft portion and the second shaft portion has a wide head portion with respect to the shaft portion, and the pair of engaging means engages below the head portion while holding the shaft portion. The housing connecting device according to any one of claims 1 to 6, wherein 8. The case coupling device according to claim 1, wherein the pair of engaging means is fixed by a fixing means whose position is adjustable with respect to the second case. 9. A housing connection method for rotatably connecting a first housing and a second housing,
The first housing is provided with a first plate member having a first shaft portion and a second shaft portion separated by a predetermined distance in the longitudinal direction of the housing, and the second housing has the first shaft portion and the first shaft portion. A second plate member having a first collar part and a second collar part for engaging with the second shaft part, respectively, and a pair of engagement means respectively corresponding to the first collar part and the second collar part And
One of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion when the first housing and the second housing are engaged with each other. When the second casing is rotated so that the longitudinal directions thereof are the same, the other of the first shaft portion and the second shaft portion is engaged with the corresponding one of the pair of engaging means. The housing connection method. In a state where one of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, the first housing and the second housing are closed. The state in which the other of the first shaft portion and the second shaft portion is engaged with the other of the first flange portion and the second flange portion is the first housing and the second housing. The casing connecting method according to claim 9, wherein the two are vertically open. One of the first flange portion and the second flange portion of the second plate member is engaged with either the first shaft portion or the second shaft portion of the first plate member and becomes the center of rotation. The housing connecting method according to claim 9 or 10, wherein the second plate member is rotated with respect to the first plate member. A portable device capable of changing a housing shape,
A first housing;
A second housing;
Connecting means for rotatably connecting the first housing and the second housing;
The connecting means includes
A first plate member attached to the first housing and having a first shaft portion and a second shaft portion separated by a predetermined distance in the longitudinal direction of the housing;
A second plate member attached to the second housing and having a first collar part and a second collar part for engaging with the first shaft part and the second shaft part, respectively;
A pair of engaging means provided in the second casing in correspondence with the first and second collars,
One of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, and the longitudinal direction of the first housing and the second housing is In the same state, the other of the first shaft portion and the second shaft portion engages with a corresponding one of the pair of engaging means. In a state where one of the first shaft portion and the second shaft portion is engaged with one of the first flange portion and the second flange portion, the first housing and the second housing are closed. The state in which the other of the first shaft portion and the second shaft portion is engaged with the other of the first flange portion and the second flange portion is the first housing and the second housing. The mobile device according to claim 12, wherein the mobile device is open vertically. One of the first flange portion and the second flange portion of the second plate member is engaged with either the first shaft portion or the second shaft portion of the first plate member and becomes the center of rotation. The portable device according to claim 12 or 13, further comprising attachment means for rotatably attaching the second plate member to the first plate member. The attachment means includes
The first plate member has a shape in which an arc centered on the first shaft portion and an arc centered on the second shaft portion intersect at an intermediate position between the first shaft portion and the second shaft portion. A formed guide slit;
An attachment shaft that slidably penetrates the guide slit and joins the first plate member and the second plate member via biasing means;
The portable device according to claim 14, wherein the mounting shaft is urged toward the end of each arc of the guide slit by the urging means. The pair of engagement means is configured to lock the rotation of the second plate member relative to the first plate member before the mounting shaft contacts the end portion of the guide slit. The portable device described. The portable device according to claim 16, wherein a length of the guide slit is set so as not to be a stopper of the mounting shaft. Each of the first shaft portion and the second shaft portion has a wide head portion with respect to the shaft portion, and the pair of engaging means engages below the head portion while holding the shaft portion. The mobile device according to claim 12, wherein the mobile device is a mobile device. The portable device according to any one of claims 12 to 18, wherein the pair of engaging means are fixed by fixing means whose position is adjustable with respect to the second housing.

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