JP4834692B2 - Electronic device with display unit - Google Patents

Description

  The present invention relates to an electronic device including a display unit among telephones and other electronic devices constituting a communication terminal device in information communication.

  In general, in an electronic apparatus including a display unit made of liquid crystal or the like, the display unit is configured to be adjustable to an angle suitable for an operator's visual field.

  A mechanism (tilt mechanism) that adjusts the display unit to a predetermined angle (tilt angle) is often employed, and there is a mechanism that allows the tilt angle to be selected and adjusted step by step by a click structure. Of these, the stepless method that allows position selection at any tilt angle is preferably used.

  As a mechanism for setting the tilt angle of such a display unit in a stepless manner, there are many mechanisms that obtain a force to hold a friction member such as rubber against the engaging member with a predetermined pressure and hold it at a set tilt angle.

  As a means for pressing the friction member against the engagement member, the engagement member is always pressed from the opposite side of the surface to be engaged with the friction member with a constant pressure, so that the engagement member can be moved due to a change in temperature or a change over time. This prevents the reduction (degradation), warpage, and the like, thereby eliminating the decrease in the pressing force. As a result, it is possible to obtain a force that is always maintained at the set tilt angle.

For example, the friction member having elastic force is fixed to the case of the display unit with a screw so as to be overlapped in advance by the amount of bending due to the elasticity of the friction member in order to press the friction member against the sliding surface portion with a constant pressure. Install the flange formed integrally with the case so that it engages the back side surface of the sliding surface part, so that the friction member is bent or warped due to temperature change or aging, so that the pressing force does not decrease. (See Patent Document 1).
JP-A-5-108204.

  However, in the mechanism for setting the tilt angle of the display unit steplessly, the friction member is fixed to the case of the display unit using screws, and the flange formed integrally with the case is attached to the sliding surface portion of the friction member. Because it is installed so as to be engaged with the back side of the machine, the number of parts is high, the cost is high, the structure is complicated, the assembling and disassembling properties are poor, and the device cannot be easily recycled. There is a point.

Therefore, in view of such problems, the applicant of the present application is able to tilt the display unit steplessly with a stable operation, has excellent assembling and disassembling properties, and can easily recycle electronic equipment. The invention which should be provided to has already been proposed (see Patent Document 2).
JP 2007-31070.

  According to this, the display unit is rotatably supported on the apparatus main body by the rotation fulcrum part, and the unit side sliding part provided in the display unit is changed to the apparatus main body side sliding part provided in the apparatus main body. When the display unit is rotated and held at a predetermined angle by the frictional force of the pressure-contact portion, the rotation fulcrum portion is located at the base of the display unit at the rotation axis and a circle around the rotation axis. A rotation support portion having an arcuate sliding contact portion is provided, and one bearing that receives the rotating shaft, the other bearing that has the receiving portion that receives the sliding contact portion, and the shaft rotation space of both bearings are provided in the apparatus main body. A shaft guide portion, the rotation shaft and the rotation support portion are inserted into the guide portion, the rotation shaft is brought into contact with the one bearing, the display unit is rotated about the rotation shaft, The sliding contact portion is in sliding contact with the receiving portion. Furthermore, the unit-side sliding portion is provided with a damper mounting portion on the display unit, and a rubber damper such as silicon rubber mounted on the damper mounting portion is provided at the tip of the damper. A damper receiving side sliding portion that slides in a compressed state from the lower side, one damper opening portion that releases deformation of the damper when the posture of the display unit reaches a maximum angle, and the display unit And the other damper opening part that releases the deformation of the damper when the angle becomes the minimum angle.

  In such a configuration, the display unit is held perpendicular to the apparatus main body, the rotation shaft and the rotation support portion of the display unit are inserted into the guiding portion of the apparatus main body, the rotation shaft is brought into contact with one bearing, and the display unit is The rotating fulcrum part can be formed by rotating the rotating shaft as a fulcrum and sliding the rotating support part sliding contact part on the receiving part, and the display unit can be easily removed from the main unit by performing the above procedure in reverse. It can be easily disassembled, can be easily assembled and disassembled, and can be easily recycled.

  Further, since the damper receives the compressive force from the lower side by the damper receiving side sliding portion, the reaction force due to the frictional force is received at the rotating fulcrum portion of the rotating shaft, thereby the tilt angle of the display unit. Can be held at a desired angle.

  According to the electronic apparatus including such a display unit, the stepless holding of the tilt angle of the display unit with respect to the apparatus main body rotates the reaction force generated by the compressive force applied to the damper receiving side sliding portion on the tip end side of the damper. Since the rotation fulcrum is received by the rotation fulcrum through the shaft, the rotation fulcrum exists on the left and right side walls of the display unit, whereas the damper or the damper receiving side sliding part is at the substantially central part of the display unit. As a result, the distance from the fulcrum to the force point is increased, and in order to maintain the tilt angle, the pressing force applied to the damper receiving side sliding portion by the damper must be increased to some extent. The damper receiving side sliding portion may be deformed by a large pressing force by the damper and weaken the tilt angle holding force.

  Further, since the holding force of the tilt angle in the display unit is performed by pressing the front end side of the damper against the upward sliding surface of the damper receiving side sliding portion, for example, dust or the like adheres to the upward sliding surface. It tends to accumulate, and once dust or the like adheres to the upward sliding surface, the frictional force of the damper will be reduced. From this point of view, the tilt angle holding force of the display unit may be weakened. is there.

  In view of the above, the present invention relates to an improvement in the technology proposed by the applicant of the present application, and relates to an electronic device with a display unit configured to always maintain a tilt angle holding force of a display unit at a desired value. It is intended to provide.

  In order to achieve the above object, an electronic apparatus having a display unit according to the present invention is configured such that the display unit is rotatably supported at the rotation fulcrum on the apparatus body, and the unit side slide provided on the display unit is provided. The display unit is configured such that the display unit is pressed against an apparatus main body side sliding portion provided in the apparatus main body, and the display unit is rotated and held with respect to the apparatus main body by a frictional force of the pressure contact portion. The unit-side sliding portion is provided with a damper mounting portion, and is configured by detachably mounting a damper having rubber elasticity on the damper mounting portion. The main body side sliding portion is arranged along the bottom wall portion formed in an arc shape so that the damper moves in accordance with the rotation operation of the display unit, and the opposite side portions of the bottom wall portion. Constitute a pair of vertical wall portions that stand formed, characterized in that constitutes the part pressed by each press of the side wall portions facing each other of the damper both said vertical wall portion.

  With this configuration, the apparatus main body side sliding portion is erected so as to extend along the opposite side wall portions of the bottom wall portion formed in an arc shape so that the damper moves along the rotation operation of the display unit. It has a pair of standing walls, has a substantially U-shaped cross section, and presses both side walls of the damper against the pair of standing walls to maintain the tilt angle of the display unit. The tilt angle holding force of the display unit can always be maintained at a desired value, and the both side walls of the damper are added to the compatible wall portion of the device body side sliding portion formed in a substantially U-shaped cross section. Since the holding force of the tilt angle is ensured by pressing the part, even if dust is trapped on the apparatus main body side sliding part from the outside, the dust tends to accumulate on the bottom wall part. In the balance wall Hardly deposited supposed to force range, as a result, it is possible to hold the tilt angle holding force of the display unit at all times a predetermined value.

  Moreover, you may make it mount the said damper in this invention so that attachment or detachment is possible by fitting the said fitting part to the said damper mounting part.

  With this configuration, the damper can be detachably mounted by fitting the fitting portion to the damper mounting portion, so that the number of parts is low, the cost is low, the structure is simple, the assembly and disassembly are easy, and the recycling is easy. Can be done.

  Further, in the electronic device structure provided with the display unit according to the present invention, a damper receiving side sliding portion in which the damper slides in a compressed state is disposed in at least one of the compatible wall portions, and the When the posture of the display unit reaches the maximum angle at both ends of the damper receiving side sliding portion, when one damper opening portion that releases deformation of the damper and the posture of the display unit become the minimum angle You may make it comprise and arrange | position the other damper opening part which open | releases the deformation | transformation of the said damper.

  With this configuration, since the damper is subjected to compressive deformation by the damper receiving side sliding portion, it acts so that the display unit does not fall down due to the friction force due to the reaction force, and the angle of the display unit with respect to the operator in a stepless manner. When the display unit posture reaches the maximum angle, the damper reaches one damper opening and is released from compression deformation. When the display unit posture reaches the minimum angle, the other damper opens. Therefore, the display unit can be tilted steplessly with a stable operation.

  According to the present invention, the rotation fulcrum portion for rotatably supporting the display unit with respect to the apparatus main body is a rotation shaft formed so as to project from the mutually opposing side wall portions of either the apparatus main body or the display unit. And a bearing portion that is formed on the opposite side wall portions on the other side and rotatably supports the rotating shaft, and the bearing portion has a rotary bearing slot that opens in the upper direction of the apparatus body, When the display unit is supported on the apparatus main body, the display unit may be inserted from above the apparatus main body so that the rotating shaft is supported on the bearing portion.

  With this configuration, in order to rotatably support the display unit on the apparatus main body, the apparatus main body is placed on, for example, a workbench, and the display unit is held vertically with respect to the apparatus main body with one hand. The display unit can be easily disassembled from the device body by reversing the above procedure by inserting the shaft into the rotating shaft receiving port of the bearing unit from above the device body. Therefore, it is excellent in assembling and disassembling, and can be easily recycled.

  In the present invention configured as described above, the apparatus main body side sliding portion is formed on the opposite side wall portions of the bottom wall portion formed in an arc shape so that the damper moves along the rotation operation of the display unit. It has a pair of standing wall portions that are erected so as to be along, has a substantially U-shaped cross section, and presses both side wall portions of the damper to the pair of standing wall portions to maintain the tilt angle of the display unit. Therefore, the tilting angle holding force of the display unit can always be maintained at a desired value, and the device body side sliding portion compatible wall formed in a substantially U-shaped cross section can be obtained. Since the holding force of the tilt angle is ensured by pressing the both side walls of the damper against the part, even if dust is trapped on the sliding side of the device main body from the outside, the dust Easy to deposit But the both wall hardly deposited supposed to extend gravity, as a result, it is possible to hold the tilt angle holding force of the display unit at all times a predetermined value.

  Next, one of the best embodiments for carrying out the present invention will be described with reference to the drawings.

  1 is a perspective view of a communication terminal device as an electronic apparatus adopting an embodiment according to the present invention, FIG. 2 is a perspective view of a main body upper case of the communication terminal device, and FIG. 3 is a display unit mounting in the main body upper case. 4 is an enlarged perspective view of the vicinity of the display unit, FIG. 4 is an enlarged plan view of the vicinity of the display unit mounting portion in the upper case of the main body, and FIG. 5 is a back side view of the display unit constituting the communication terminal device in FIG. FIG. 6 is a perspective view of the disassembled state of the display unit.

  First, as shown in FIG. 1, a communication terminal device according to an embodiment of the present invention includes a device main body A, a display unit B, and a handset C.

  The apparatus main body A has a central line button unit 5 and a dial button unit 6 fitted into a main body upper case 1 as a case to form an operation unit A1, and a rubber contact and a printed circuit board (both not shown) are accommodated therein. The main body lower case 2 is assembled to the main body upper case 1 for assembly.

  As shown in FIGS. 2 to 4, the main body upper case 1 has a display unit mounting portion 7 for mounting the display unit B on the rear portion thereof. The display unit mounting portion 7 includes an accommodation recess 10, and the accommodation recess 10 has an upright wall portion 10 b that is substantially perpendicular to the bottom surface portion 10 a and left and right side wall portions 10 c, 10 d. A claw moving portion 11 is formed on the.

  The left and right side wall portions 10c and 10d of the housing recess 10 are respectively provided with rotating shafts 15 at positions close to the standing wall portion 10b, and the bearing portions 16 formed on the left and right side portions of the display unit B are respectively supported by bearings. Thus, a rotation fulcrum portion F that supports the display unit B with respect to the apparatus main body A is configured.

  The claw moving part 11 is constituted by a concave part formed in the bottom surface part 10 a of the housing concave part 10, is formed in an arc shape, and the bottom surface part 10 a is an opening part 11 a so as to be continuous with the claw moving part 11.

  The rear edge of the opening 11a is formed in the upper locking portion 11b, and the lower wall locking portion 11c is formed on the standing wall 10b facing the upper locking portion 11b.

  A pair of device main body side sliding portions 8 and 9 are formed on both sides of the claw moving portion 11 in the bottom surface portion 10 a of the housing recess 10.

  The apparatus main body side sliding portions 8 and 9 are each formed in an arc shape so that the bottom wall portions 8 a and 9 a follow the rotation trajectory of the display unit B.

  One device main body side sliding portion 8 has a pair of standing wall portions 8b and 8c that are erected so as to extend along both side portions of the bottom wall portion 8a, and has a U-shaped cross section. Yes.

  The inner walls of the compatible wall portions 8b and 8c are each formed with a thick central portion to form a damper receiving side sliding portion 8d, and both sides in the longitudinal direction of the damper receiving side sliding portion 8d are respectively The upper damper opening 8e and the lower damper opening 8f are formed. The upper damper opening 8e and the lower damper opening 8f may be formed only on one side of the compatible wall portions 8b and 8c. As a result, the other side of the compatible wall portions 8b and 8c is formed in a flat shape.

  The other apparatus main body side sliding portion 9 is configured to have a substantially L-shaped cross section in which only the standing wall portion 8c side has the standing wall portion 9b.

  In addition, in order to shape | mold the rotating shaft 15, the punching hole 10e at the time of shaping | molding is formed in the bottom face part 10a of the accommodating recessed part 10 so that the rotating shaft 15 may be opposed.

  Further, as shown in FIG. 6, the display unit B includes an LCD upper case 20 having a display window 20a, an LCD cover 21, an LCD 22, an LCD printed circuit board 23, an LCD connection cable, and an LCD main body lower case 25. And a damper 26.

  As shown in FIG. 5, bearing portions 16 for bearing the rotating shaft 15 are formed at the lower portions of the left and right side portions of the LCD upper case 20.

  The bearing portion 16 includes a circular bearing recess 17 and a rotary bearing slot 18 that is continuous with the circular bearing recess 17 and opens in the upper direction of the apparatus main body A.

  Further, in the lower center of the back surface portion of the LCD main body lower case 25, a unit side slide composed of convex portions respectively moving to both the device main body side sliding portions 8 and 9 in a state where the display unit B is assembled to the device main body A. Moving parts 12 and 13 are formed.

  One unit side sliding portion 12 and the other unit side sliding portion 13 are separated from each other by a concave groove 14.

  One unit-side sliding portion 12 is formed in an arc shape so as to conform to the shape of the bottom wall portion of the one apparatus body-side sliding portion, and a columnar damper mounting portion 12a is formed on the lower end side. In addition, a damper 26 made of an elastic material such as elastomer rubber as shown in FIG. 7 is mounted on the damper mounting portion 12a. For this purpose, the damper 26 is formed in a substantially bowl shape so as to have a fitting portion 26a as an inner hole and to fit the fitting portion 26a into the damper mounting portion 12a.

  The other unit-side sliding portion 13 has a cantilevered spring piece portion 13a at the lower end middle portion thereof. A rotation locking portion 13b is provided at the tip of the spring piece portion 13a. The rotation locking portion 13b constitutes stopper means for defining the minimum angle of the tilt range with respect to the device main body A in the display unit B by engaging with the upper side locking portion 11b of the main body upper case 1.

  Alternatively, a pair of cantilevered stoppers 27 are formed at the lower center of the back surface portion of the LCD main body lower case 25 of the display unit B, and the stoppers 27 are provided on the standing wall portion 10 b of the housing recess 10. The maximum angle (substantially horizontal state) of the tilt range with respect to the apparatus main body A in the display unit B is defined by locking from the back side of the stop portion 11c.

  Further, a decorative panel 28 made of a transparent material is mounted on the front surface of the LCD upper case 20.

  Next, the assembly of the display unit B to the apparatus main body A will be described.

  In FIG. 8, first, the display unit 29 of the display unit B is held perpendicular to the operation unit A1 of the main body upper case 1, and the rotating shaft 15 formed in the main body upper case 1 is attached to the bearing unit 16 of the display unit B. insert. This insertion is first performed until the rotary shaft 15 is guided from the rotary shaft receiving port opened upward of the main body upper case 1 and reaches the circular bearing recess 17 (see FIG. 7).

  Next, the unit side sliding part 12 and the unit side sliding part 13 on the display unit B side are inserted into the apparatus main body side sliding part 8 and the apparatus main body side sliding part 9, respectively.

  Next, the display unit B is rotated about the rotation shaft 15 with respect to the main body upper case 1, and the display unit 29 of the display unit B is inclined upward (see the state of FIG. 10).

  At this time, after the rotation locking portion 13b of the spring piece portion 13a formed on the unit side sliding portion 13 slides on the claw moving portion 11 in the housing recess 10 of the main body upper case 1, the upper locking portion 11b Engage with the back side to prevent the display unit B from rotating to the operation unit A1 side of the apparatus main body A.

  At this time, the damper 26 mounted on the damper mounting portion of the unit side sliding portion 12 is in a state of being fitted between the standing wall portions 8b and 8c in the upper damper opening portion 8e of the one apparatus body side sliding portion 8. Thus, the left and right side walls 26a of the damper 26 are sandwiched between the standing wall portions 8b and 8c and are elastically deformed by a small amount, and the display unit B is held in a state where it is inclined by the minimum tilt angle (see the state of FIG. 10). .

  From this state, when the display unit B is gradually rotated in the direction of the arrow, the damper 26 slides in pressure contact with the damper receiving side sliding portion 8d of one device body side sliding portion 8 in a state of being largely elastically deformed. Thus, the display unit B is held at the tilt angle at the position where the rotation is stopped, and can be continuously adjusted to an angle suitable for the visual field of the operator.

  When the display unit B is further rotated in the direction of the arrow and the damper 26 reaches the position where the damper 26 is positioned at the lower damper opening 8f, the stopper 27 on the display unit B side is engaged from the back side of the lower locking portion 11c. As shown in FIG. 11, the display unit is positioned at the maximum tilt angle substantially parallel to the operation unit A <b> 1 of the apparatus main body A.

  According to the embodiment of the present invention configured as described above, one device body side sliding portion 8 has a bottom formed in an arc shape so that the damper 26 moves along with the rotation operation of the display unit B. Since the wall portion 8a has a pair of standing wall portions 8b and 8c that are erected so as to extend along both opposite side wall portions, the cross section is substantially U-shaped, and the pair of standing walls. The side walls 26a of the damper 26 are pressed into contact with the portions 8b and 8c, respectively, and the action point and the power point for maintaining the tilt angle of the display unit B can be brought close to each other. The tilt angle can be maintained by pressing the side wall portions 26a of the damper 26 against the compatible wall portions 8b and 8c of the one device body side sliding portion 8 formed in a substantially U-shaped cross section. Holding power Therefore, even if dust is trapped on one device body side sliding portion 8 from the outside, the dust easily accumulates on the bottom wall portion 8a. Is difficult to deposit due to gravity, and as a result, the tilt angle holding force of the display unit B can always be kept at a predetermined value.

  Further, since the damper 26 can be detachably mounted by fitting the fitting portion 26b to the damper mounting portion 12a, the number of parts is low, the cost is low, the structure is simple, the assemblability and disassembly are good, and the recycling is easy. Can be done.

  Further, since the damper 26 is compressed and deformed by the damper receiving side sliding portion 8a, the damper 26 acts so that the display unit B does not fall down due to the gravitational force due to the reaction force. And when the display unit B is at the maximum position, the damper 26 reaches the lower damper opening 8f and is released by compression deformation, and the display unit B has the minimum position. When the angle is reached, it reaches the upper damper opening 8e and is released by compression deformation, and the display unit can be tilted steplessly with a stable operation.

  Furthermore, in order to rotatably support the display unit B on the apparatus main body A, the apparatus main body A is placed on a work table, for example, and the display unit B is held in a direction perpendicular to the apparatus main body A with one hand. The rotation shaft 15 can be inserted by inserting the rotation shaft 15 into the rotation shaft receiving port 18 of the bearing portion 16 from above the apparatus body A, and the display unit B can be removed from the apparatus body A by performing the above procedure in reverse. It can be easily disassembled, and from this point, it is excellent in assemblability and disassembly, and can be easily recycled.

  As described above, according to the present invention, the action point and the force point for maintaining the tilt angle of the display unit are brought close to each other by pressing the both side wall portions of the damper against the compatible wall portion constituting the sliding portion on the apparatus main body side. In addition, since the tilt angle holding force of the display unit can always be kept at a desired value without being affected by dust smeared from the outside, among telephones and other electronic devices constituting a communication terminal device in information communication, It is suitable for an electronic device provided with a display unit.

1 is a perspective view of a communication terminal device as an electronic apparatus employing an embodiment according to the present invention. It is a perspective view of the main body upper case of the communication terminal device. It is the perspective view which expanded and drawn the display unit mounting part vicinity in the main body upper case. It is the top view which expanded and drawn the display unit mounting part vicinity in the main body upper case. It is the perspective view which drawn from the back side the display unit which comprises the communication terminal device in FIG. 1 in the state which removed the damper. It is a perspective view of the disassembled state of the display unit. It is a perspective view of a damper. It is explanatory drawing of the state before an assembly in description of the assembly order to the apparatus main body of a display unit. It is explanatory drawing of the state of an assembly initial stage in description of the assembly order to the apparatus main body of a display unit. It is explanatory drawing of an assembly state in description of the assembly order to the apparatus main body of a display unit. It is the longitudinal cross-sectional view which drew the state which tilted the display unit with respect to the apparatus main body to the maximum, and open | released the deformation | transformation of a damper.

Explanation of symbols

A Device main unit A1 Operation unit B Display unit F Rotating fulcrum 1 Main unit upper case 2 Lower case 8, 9 Device main unit side sliding unit 8a, 9a Bottom unit 8b, 8c Standing wall unit 8d Damper receiving side sliding unit 8e Upper damper open Part 8f Lower damper opening part 12, 13 Unit side sliding part 15 Rotating shaft 16 Bearing part 17 Circular bearing recess 18 Rotating shaft receiving port

Claims (4)

The display unit is rotatably supported at the rotation fulcrum on the apparatus body, and the unit-side sliding part provided on the display unit is pressed against the apparatus body-side sliding part provided on the apparatus body. An electronic apparatus including a display unit configured to hold the display unit at a predetermined angle with respect to the apparatus main body by a frictional force of a press-contact portion,
The unit-side sliding portion is provided with a damper mounting portion, and is configured by attaching a rubber elastic damper to the damper mounting portion so as to be detachable. Has a bottom wall portion formed in an arc shape so as to move in accordance with a rotation operation of the display unit, and a pair of standing wall portions formed upright along both opposite side portions of the bottom wall portion. An electronic apparatus provided with a display unit, wherein the press-contact portion is configured by press-contacting both opposing wall portions of the damper to the compatible wall portion.   The electronic device having a display unit according to claim 1, wherein the damper is detachably mounted by fitting the fitting portion to the damper mounting portion.   At least one of the compatible wall portions is provided with a damper receiving side sliding portion in which the damper slides in a compressed state in the center, and at both ends of the damper receiving side sliding portion, the display unit One damper opening portion that releases the deformation of the damper when the posture reaches the maximum angle and the other damper opening portion that releases the deformation of the damper when the posture of the display unit reaches the minimum angle are arranged. An electronic apparatus comprising the display unit according to claim 1 or 2, wherein the electronic device is configured as described above. A rotation fulcrum portion for rotatably supporting the display unit with respect to the apparatus main body includes a rotation shaft formed to project from a side wall portion facing each other in either the apparatus main body or the display unit, and opposite to each other in the other. And a bearing portion that rotatably supports the rotary shaft, the bearing portion having a rotary bearing opening that opens in an upper direction of the device main body, and the display unit is configured as the device. The structure according to any one of claims 1 to 3, wherein the display unit is inserted from above the apparatus main body to be supported by the main body, and the rotation shaft is supported by the bearing portion. An electronic device comprising the display unit according to claim 1.