JP2006245809A - Antenna for portable electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tilting mechanism and a rolling mechanism small in size and excellent in durability which carry out the tilting of flexible elements to about 90°, and can be rotated in a horizontal plane. <P>SOLUTION: A sliding maintenance 5 having a spherical part 5a is contained rotatably in a base 4. If the tilting of the flexible elements 3 is elongated and inclined, a cylindrical body 5b currently extended from the sphere 5a to an upper part comes to move to a notched circle currently formed in the side wall of the base 4. Consequently, the tilting of the elements 3 can be made possible to about 90° to the base 4. Since the spherical part 5a is turnable in one direction wherein only the inside of the notching circles can rotate toward one direction so that it may become movable, the diameter of the spherical part 5a can be made small. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an antenna for a portable electronic device provided in a portable electronic device such as a cellular phone capable of receiving at least an electronic device having a receiving function, particularly a terrestrial digital television broadcast.

  Although mobile phones are widespread, this mobile phone is equipped with an antenna for transmitting and receiving calls and information. In general, this antenna is a retractable antenna that can be stored in the casing of a mobile phone so that it can be easily carried when it is on standby. An example of the configuration of such an antenna for a mobile phone is shown in FIG. An antenna 300 illustrated in FIG. 19 includes a flexible element 301, and a top portion 303 is provided at the tip of the element 301. The element 301 is slidably held with respect to the holder portion 302. Then, by attaching the holder portion 302 to the housing of the mobile phone, the element 301 can be accommodated in the housing by sliding the element 301 downward with respect to the holder portion 302. Further, in this state, the element 301 can be brought into an extended state by grasping the top portion 303 and pulling out the element 301 from the holder portion 302. Note that since the element 301 has flexibility and bends so as to be restored as shown in the figure, the element 301 can be prevented from being broken even if it hits an obstacle.

  By the way, in recent years, terrestrial digital television broadcasting has been started, and mobile phones capable of receiving terrestrial digital television broadcasting are also known. In order to efficiently receive terrestrial digital television broadcasting, it is necessary to match the directivity characteristics of the antenna with the direction of arrival of the radio waves. For this reason, an antenna that can adjust the directivity characteristics of the antenna so as to be tiltable and rotatable with respect to the housing is suitable for an antenna that receives terrestrial digital television broadcasting.

  As a conventional tiltable and rotatable antenna, an antenna using a multistage telescopic antenna (rod antenna) often used for so-called radio cassettes is known. An example of the configuration of such an antenna is shown in FIG. An antenna 400 shown in FIG. 20 includes a telescopic element 401 having a multistage structure. The telescopic element 401 is tiltable with respect to the antenna mounting portion 402 and is rotatable with respect to the antenna mounting portion 402. It is fixed. Therefore, the antenna 400 is attached to the housing of a portable electronic device (not shown) so that the antenna 400 can be tilted and rotated with respect to the housing. In the expansion / contraction element 401, each element that is multi-staged to realize expansion / contraction has a pipe structure. For this reason, since the outer diameter of the final stage in the expansion / contraction element 401 becomes large, a diameter of 5 mm to 8 mm is required as a diameter of a mechanical component that creates a tilting mechanism and a rotation mechanism.

  Here, the tilting mechanism of the antenna 400 is shown in FIG. As shown in FIG. 21, a flat element base 401 a is formed so as to protrude from the lower end of the expandable element 401. The element base 401 a is sandwiched between the upper portions of the rotation holding portion 403, and the element base 401 a is rotatably fixed to the rotation holding portion 403 with fixing screws 404. Accordingly, the telescopic element 401 is attached to the rotation holding portion 403 so as to be tiltable. Next, the rotation mechanism in the antenna 400 will be described. The rotation holding portion 403 has a circular cross section, and the rotation holding portion 403 has a circular insertion fitting hole formed in the antenna mounting portion 402 shown in FIG. It is elastically inserted in. For this reason, since the rotation holding part 403 can be rotated with respect to the antenna attaching part 402, the extensible element 401 is fixed to the antenna attaching part 402 so as to be rotatable.

Another configuration example of a conventional antenna that can be tilted and rotated is shown in FIGS. However, FIG. 22 is a perspective view showing a configuration of a conventional antenna 500, and FIG. 23 is a cross-sectional view showing the configuration.
In the antenna 500 shown in these drawings, the lower end of the element 501 having the top portion 504 at the tip is fixed to the spherical portion 502. More than half of the spherical portion 502 is slidably held in the holder portion 503 and is urged upward by a coil spring 505 housed in the lower portion of the holder portion 302. Thereby, the spherical portion 502 is held so as to be tiltable and rotatable with respect to the holder portion 503 by the urging force of the coil spring 505. In this antenna 500, since the element 501 can maintain a predetermined angle by the frictional force between the spherical portion 502 and the holder portion 503, the diameter of the spherical portion needs to be 5 mm to 8 mm.
Japanese Utility Model Publication No. 63-26108 Japanese Utility Model Publication No. 60-103914

  A conventional antenna 300 for a mobile phone shown in FIG. 19 is a retractable antenna, and the element 301 is bent so as to be reversible so as to absorb the impact when it receives an impact during extension. However, since there is no tilting mechanism that tilts and holds the element 301 at an arbitrary position and a rotation mechanism that rotates the tilted element 301 in a horizontal plane, the directivity characteristics of the antenna cannot be adjusted. was there.

  Further, the tilting mechanism in the conventional antenna 400 shown in FIG. 20 has a structure in which a plate-like element base 401 a is sandwiched between the upper parts of the rotation holding part 403. In this case, the frictional force for holding the tilted expansion / contraction element 401 depends on the area of the surface on which the flat element base 401a is clamped and the clamping force of the rotation holding unit 403. In order to make this possible several tens of thousands of times, the diameter and width of the element base portion 401a and the rotation holding portion 403 need to be 5 mm to 8 mm. In this case, when the diameter and width of the element base portion 401a and the rotation holding portion 403 are about 2 mm, the durability of the number of tilts is about several hundred times, and when the tilting is repeated, the weight of the expansion / contraction element 401 is tilted and held. If the force is exceeded, the telescopic element 401 cannot be fixed and held at an arbitrary position.

Furthermore, the rotation mechanism in the antenna 400 is a mechanism that elastically inserts the rotation holding portion 403 into an insertion hole formed in the antenna attachment portion 402. For this reason, a diameter of 5 mm to 8 mm is required as the diameter of the rotation holding portion 403 and the antenna mounting portion 402. If the diameter of the rotation holding portion 403 and the antenna mounting portion 402 is about 2 mm, the rotation durability is extremely reduced. Then, it rotates due to its own weight.
Therefore, the antenna 400 requires a diameter and width of 5 mm to 8 mm as the diameter and width of the mechanical component that creates the tilting mechanism and the rotation mechanism. Therefore, when the antenna 400 is attached to a portable electronic device such as a mobile phone, There is a problem that the antenna 400 cannot be applied to a portable electronic device because it is too large (too thick) compared to the size of the casing of the electronic device.

  Furthermore, in the antenna 500 shown in FIGS. 22 and 23, the element 501 is tilted up to 90 ° with respect to the holder portion 503 because it will come out unless it is held by the holder portion 503 over half of the spherical portion 502. I can't do that. Furthermore, since the spherical portion 502 and the holder portion 503 can be tilted and rotated, the diameter of the spherical portion 502 is required to be 8 mm to 10 mm because of its durability. Therefore, when the antenna 500 is attached to a portable electronic device such as a cellular phone, the size of the casing of the portable electronic device is too large to be applied to the portable electronic device. It was.

  Accordingly, the present invention provides a small-sized and highly durable tilt mechanism capable of tilting a flexible element to about 90 ° and rotating in a horizontal plane, and an antenna for a portable electronic device having a rotation mechanism. It is aimed.

  In order to achieve the above object, an antenna for a portable electronic device according to the present invention includes an element portion in which a top portion is formed at the tip of a flexible linear element and a stopper portion is formed at a lower end. And a base part that holds the element part so as to be extendable and that can be tilted and rotated in a horizontal plane, and has a notch part that is notched from the upper part to a substantially central part. The most important feature is that a spherical portion into which the element portion is slidably inserted is rotatably accommodated in the base portion main body.

  According to the present invention, a top part is formed at the tip of a flexible linear element and a stopper part is formed at the lower end, and the element part is stretchably held, And a base part that holds the element part so that it can tilt and rotate in a horizontal plane, and the element part is slidable within a cylindrical base part body having a notch part that is notched from the upper part to the center part. Since the spherical part inserted into the pivot is housed in a rotatable manner, the flexible stretchable element can be tilted up to about 90 ° and rotated in a horizontal plane, and the tilting is small and durable. It can be set as the antenna for electronic devices which has a mechanism and a rotation mechanism.

  The objective is to provide a portable electronic device antenna having a small and durable tilting mechanism and a rotating mechanism capable of tilting a flexible element up to about 90 ° and rotating in a horizontal plane. A linear element having a top portion formed at the front end and a stopper portion formed at the lower end, and holding the element portion in an expandable and contractible manner, and tilting the element portion in a horizontal plane And a base portion that is rotatably held at the top, and a spherical base portion having a cutout portion that is notched from the upper portion to the center portion, and a spherical portion into which the element portion is slidably inserted is rotated. Realized by storing it as possible.

FIG. 1 shows an example of the configuration of a portable electronic device including the antenna 1 of the first embodiment of the portable electronic device antenna of the present invention.
The antenna 1 according to the present invention is attached to the upper surface of a casing 101 constituting a mobile phone 100 that is a mobile electronic device. The casing 101 is provided with an operation unit 102 including a numeric keypad and operation buttons, and a display unit 103 including a liquid crystal. The antenna 1 can be tilted with respect to the housing 101 and can be rotated in a horizontal plane in the tilted state. As a result, the directivity of the antenna 1 attached to the mobile phone 100 can be directed in a desired direction, and the mobile phone 100 can receive a television broadcast such as a terrestrial digital broadcast. A suitable antenna can be obtained.

Next, FIG. 2 shows an example of the configuration of another portable electronic device provided with the antenna 1 of the first embodiment of the antenna for portable electronic device of the present invention.
The antenna 1 according to the present invention is attached to the upper surface of a casing 201 constituting a television receiver 200 which is a portable electronic device. A casing 201 of the television receiver 200 is provided with an operation unit 202 including operation buttons and a display unit 203 including a large liquid crystal. The antenna 1 can be tilted with respect to the housing 201 and can rotate in a horizontal plane in the tilted state. As a result, the directional characteristics of the antenna 1 attached to the television receiver 200 can be directed in a desired direction, and the antenna can be suitable for receiving television broadcasts such as terrestrial digital broadcasts. it can.

Next, FIG. 3 shows a configuration of an antenna 1 which is a first embodiment of the antenna for a portable electronic device according to the present invention.
An antenna 1 according to the present invention shown in FIG. 3 includes a flexible element portion 3 made of a superelastic alloy having a top portion 2 provided at the tip. The element portion 3 is housed in a base portion 4. The sliding holding portion 5 is slidably held. A screw portion 15a protrudes downward from the base portion 4, and the antenna 1 can be attached to the electronic device by fixing the screw portion 15a to the casing of the electronic device. FIG. 3 shows a configuration of the antenna 1 in which the element portion 3 is slid upward from the sliding holding portion 5 and extended, and in such a state that the element portion 3 is extended, the element 1 The sliding holding portion 5 holding the portion 3 can be tilted to approximately 90 ° with respect to the base portion 4 as shown by a broken line. Thereby, the element part 3 can be tilted at an arbitrary angle up to 90 ° with respect to the base part 4. Further, in a state where the element part 3 is tilted at an arbitrary angle with respect to the base part 4, the element part 3 can be rotated in a horizontal plane. The top portion 2 includes an antenna top 10 made of synthetic resin that is a handle that is gripped when the element portion 3 is expanded and contracted, and a metal top mounting shaft 11 that fixes the antenna top 10 to the element portion 3. Yes.

  FIG. 4 is a diagram illustrating a configuration of the antenna 1 in which the element portion 3 is contracted with respect to the base portion 4. As shown in FIG. 4, when the element part 3 is retracted with respect to the base part 4, the lower part of the antenna top 10 is fitted into the base part 4, and the head of the antenna top 10 having a large diameter is formed. The lower surface of the portion comes into contact with the upper end surface of the base portion 4. As shown in the drawing, a metal stopper portion 6 is fixed to the lower portion of the element portion 3, and a locking portion 6 a having a slightly larger diameter is formed at the lower end of the stopper portion 6. When the element portion 3 is extended with respect to the sliding holding portion 5, the locking portion 6 a is engaged with the sliding holding portion 5, thereby stopping the extension of the element portion 3. .

  Next, sectional views showing a part of the detailed configuration of the antenna 1 according to the present invention are shown in FIGS. FIG. 5 is a diagram showing a configuration of the element part 3 and the base part 4 in a state in which the element part 3 is contracted with respect to the base part 4, and FIG. FIG. 7 is a diagram showing the configuration of the element part 3 and the base part 4 in a state of being tilted at an angle, and FIG. FIG.

Before describing the configuration shown in these drawings, the configuration of each part constituting the antenna 1 according to the present invention will be described.
FIG. 8 is a cross-sectional view showing the configuration of the antenna top 10. The antenna top 10 is made of a synthetic resin, and includes a head portion 10a and a cylindrical extending portion 10b extending downward from the head portion 10a. An insertion hole 10c is formed in the antenna top 10 from the extending portion 10b to the head portion 10a.

  FIG. 9 is a half sectional view showing the configuration of the top mounting shaft 11. The top mounting shaft 11 is made of a long and narrow metal, and has a large diameter portion 11a formed at the top, and a small diameter portion 11b extending from the large diameter portion 11a. The narrow diameter portion 11b is formed in a shape in which the diameter of the lower portion is reduced. A ring-shaped groove portion 11c is formed at a substantially central portion of the large-diameter portion 11a, and the large-diameter portion 11a can be fitted into the insertion hole 10c of the antenna top 10. The antenna top 10 can be fixed so as to be integrated with the top mounting shaft 11 by inserting the large-diameter portion 11a into the insertion hole 10c. A first through hole 11d is formed from the upper end of the top mounting shaft 11 to a substantially central portion, and a second through hole 11e having a slightly larger diameter is formed in communication with the first through hole 11d. The diameter of the first through hole 11d is substantially the same as the outer diameter of the element conductor 3a in the element portion 3, and the element conductor 3a can be fitted into the first through hole 11d. The diameter of the second through hole 11e is substantially the same as the outer diameter of the element part 3 configured by covering the element conductor 3a with the insulating tube 3b, and the element part 3 is placed in the second through hole 11e. Can be inserted.

FIG. 10 is a front view illustrating the configuration of the base portion 4, and FIG. 11 is a cross-sectional view illustrating the configuration of the base portion 4.
As shown in these drawings, the base part 4 is made of metal and has a substantially cylindrical base part body 4a in which the outer diameter of the upper part is slightly smaller than the outer diameter of the lower part. The base part main body 4a is formed with through holes made of five holes having different diameters. The through holes are, from the top, a fitting hole 4d, a fitting insertion hole 4e, a holding hole 4f, a rotation holding hole 4g, and a storage hole 4h. Further, a notch portion 4c having a predetermined width is formed on the side wall of the base portion main body 4a from the upper end to the substantially central portion. The bottom of the notch 4c is semicircular, and the diameter thereof is substantially the same as the diameter of the circular cylindrical portion 5b formed on the upper portion of the sliding holding portion 5. The extending portion 10b of the antenna top 10 can be fitted into the fitting hole 4d in the through hole, and the cylindrical portion 5b of the sliding holding portion 5 can be fitted into the fitting insertion hole 4e formed thereunder. The width of the notch 4c and the diameter of the fitting hole 4e are substantially the same.

  The holding hole 4f formed below the fitting insertion hole 4e is a hole for holding the spherical portion 5a, and the diameter of the holding hole 4f and the outer diameter of the spherical portion 5a of the sliding holding portion 5 are substantially the same size. Has been. The shape of the spherically rounded portion formed in the upper portion of the holding hole 4f is substantially the same as a part of the shape of the outer peripheral surface of the spherical portion 5a. A rotation holding hole 4g formed in a ring shape with a larger outer diameter under the holding hole 4f accommodates a flange 15b formed in the rotation holding part 15 described later, and is formed under the holding hole 4f. The fixing ring 16 fitted into the rotation holding portion 15 is accommodated in the accommodating hole 4h. The fixing ring 16 is fixed in the storage hole 4h of the base portion 4 by caulking or the like.

  FIG. 12 is a cross-sectional view showing the configuration of the sliding holding portion 5. The sliding holding part 5 is made of metal and is composed of a spherical part 5a and a cylindrical part 5b extending from the spherical part 5a. Thus, the shape of the lower half of the sliding holding part 5 is a spherical shape, and the upper half is a cylindrical shape. The sliding holding part 5 is formed with a through hole made up of three holes. A first protrusion 5d protrudes from the upper portion of the through hole, and the upper edge of the first protrusion 5d is chamfered and rounded. A second protrusion 5e is formed at the lower portion of the through hole so as to protrude, and the lower edge of the second protrusion 5e is chamfered and rounded. A through hole between the first protrusion 5d and the second protrusion 5e is a spring accommodating hole 5c, and a sliding spring 12 for slidably holding the element portion 3 inserted into the through hole is accommodated. Is done. The upper and lower ends of the sliding spring 12 are locked to the protrusions of the first protrusion 5d and the second protrusion 5e, and are fixed in the spring accommodating hole 4c.

  FIG. 13 is a cross-sectional view showing the configuration of the sphere holding unit 13. The sphere holding part 13 is made of metal and is received in the holding hole 4f of the base part 4 so as to receive the lower part of the spherical part 5a. The ball holding portion 13 includes a ring-shaped flange portion 13b and an extending portion 13c extending downward from the flange portion 13b. A through hole into which the element portion 3 can be inserted is formed in the sphere holding portion 13, and the shape of the spherically rounded sphere receiving portion 13a formed at the upper edge of the through hole is the outer periphery of the spherical portion 5a. The shape is almost the same as part of the surface shape. Further, the upper end of the coil-shaped spring 14 disposed on the outer periphery of the extending portion 13c comes into contact with the lower surface of the flange portion 13b, and the spring 14 biases the ball holding portion 13 upward.

  FIG. 14 is a half sectional view showing the configuration of the rotation holding unit 15, and FIG. 15 is a bottom view showing the configuration of the rotation holding unit 15. The rotation holding part 15 is made of metal, and has a flange part 15b on the upper part. A through-hole 15e through which the element portion 3 is inserted is formed in the rotation holding portion 15 having a substantially cylindrical shape throughout. . The upper cylindrical portion 15c extends upward from the flange portion 15b, the lower end of the coiled spring 14 disposed on the outer periphery of the upper cylindrical portion 15c contacts the upper surface of the flange portion 15b, and the spring 14 moves upward. You will gain the urging power to. A rotary sliding portion 15d having a circular outer peripheral surface is formed under the flange portion 15b. When the flange portion 15b is positioned in the rotation holding hole 4g of the base portion 4 and the fixing ring 16 that is rotatably inserted in the rotary sliding portion 15d is fixed in the storage hole 4h of the base portion 4, The rotation holding portion 15 is integrated with the base portion 4 so as to be rotatable by the action of the portion 15b and the rotary sliding portion 15d. A screw portion 15a for attaching the antenna 1 to the housing of the electronic device is formed below the rotary sliding portion 15d. The opposing surfaces of the screw portion 15a are formed in a flat shape as shown in FIG. 15, and form a detent for the housing.

  Returning to FIG. 5, a state in which the element portion 3 is contracted with respect to the base portion 4 is shown. The element portion 3 is constituted by covering a superelastic metal element conductor 3a made of nickel-titanium alloy or the like with a flexible insulating tube 3b made of vinyl or the like, and a top mounting shaft 11 is provided at the upper end of the element portion 3. It is fixed. The element conductor 3a is fitted into the first through hole 11d on the top of the top mounting shaft 11, and the element conductor 3a is fixed to the top mounting shaft 11 by caulking. At this time, the upper part of the element part 3 covered with the insulating tube 3b is inserted into the second through hole 11e. In this state, the antenna top 10 is press-fitted and fixed to the large-diameter portion 11 a of the top mounting shaft 11. When the element portion 3 having such a configuration is retracted with respect to the base portion 4, the narrow diameter portion 11b of the top mounting shaft 11 is inserted from above the cylindrical portion 5b of the sliding holding portion 5 and is inserted into the spring accommodating hole 4c. It is held by the arranged sliding spring 12. The element portion 3 extends through the through holes of the ball holding portion 13 and the rotation holding portion 15 and extends downward from the lower end of the base portion 4. Furthermore, the extending portion 10b of the antenna top 10 is fitted into the fitting hole 4d of the base portion 4 so that the element portion 3 does not come out of the base portion 4 against its own weight.

  The sliding holding portion 5 holding the element portion 3 is elastically held between the upper portion of the holding hole 4f and the ball holding portion 13 because the ball holding portion 13 is biased upward by the spring 14. The spherical portion 5a, the holding hole 4f, and the sphere holding portion 13 can rotate within the holding hole 4f. At this time, a cylindrical portion 5b is formed to protrude upward from the spherical portion 5a, and the cylindrical portion 5b can be moved into the cutout portion 4c of the base portion 4 by rotating the spherical portion 5a. Thus, in a state where the element part 3 is extended, the cylindrical part 5b can be moved into the notch part 4c by rotating the spherical part 5a. And the element part 3 extended | stretched comes to incline as the cylindrical part 5b moves up and down in the notch part 4c. This tilting range is restricted by the length of the notch 4c, and can be tilted up to about 90 ° in the present invention. The spring 14 is disposed between the flange portion 13 b of the ball holding portion 13 and the flange portion 15 b of the rotation holding portion 15, and the lower surface of the flange portion 15 b of the rotation holding portion 15 is in contact with the upper surface of the fixing ring 16. As a result, the ball holding portion 13 is urged upward by the action of the spring 14, and the ball holding portion 13 and the rotation holding portion 13 are separated from each other and are not in electrical contact. Can be used as In addition, when using the spring 14 as a loading coil, the base part 4 is comprised with an insulating material.

  FIG. 6 shows a state in which the extended element part 3 is tilted by a predetermined angle with respect to the base part 4. When the element portion 3 is extended from the base portion 4, the metal stopper portion 6 fixed to the lower end of the element portion 3 is inserted into the sliding holding portion 5 from below. And the latching | locking part 6a formed in the lower end of the stopper part 6 comes to be latched by the 2nd protrusion 5e currently formed in the lower part of the through-hole of the spherical part 5a. As a result, the element portion 3 protrudes upward from the base portion 4. In this extended state, the stopper portion 6 is held by the sliding spring 12 disposed in the spring accommodating hole 4c, and the element portion 3 is prevented from coming out downward due to its own weight. Here, when a lateral load is applied to the element portion 3 to rotate the spherical portion 5a and move the cylindrical portion 5b into the notch portion 4c, the element portion 3 is moved to the base portion 4 as shown in FIG. It begins to tilt with respect to. Then, as shown in FIG. 7, when the cylindrical part 5b having a circular cross section comes into contact with the semicircular lower end of the cutout part 4c, the cylindrical part 5b can no longer be tilted, and the tilt angle is about 90 °.

  The spring 14 applies a biasing force for holding the element portion 3 in a tilted state against its own weight to the ball holding portion 13 from below. Further, since the flange portion 15b of the rotation holding portion 15 is rotatably locked to the fixing ring 16 so as not to come out of the rotation holding hole 4g, the element portion 3 is tilted as shown in FIGS. In this state, the element portion 3 can be rotated in a horizontal plane. When the element portion 3 is rotated to a predetermined position, an urging force for holding the element portion 3 against its own weight is rotated by the spring 14. 15 is applied. Thus, the spring 14 applies an urging force to both the tilting mechanism and the rotating mechanism.

  As described above, in the antenna 1 according to the present invention, the tilting mechanism is mainly configured by the slide holding part 5 having the base part 4 formed with the notch part 4c, the spherical part 5a, and the cylindrical part 5b. The ball holding part 13, the spring 14 and the rotation holding part 15 supplement this configuration. The rotation mechanism is mainly composed of the rotation holding portion 15 and the base portion 4 to which the fixing ring 16 is fixed. The sliding holding portion 5, the ball holding portion 13 and the spring 14 supplement this configuration. . In this tilting mechanism, since the sliding holding part 5 rotates only in one direction along the cutout part 4c of the base part 4, it is sufficient to reduce the diameter of the spherical part 5a in the sliding holding part 5 to about 2 mm. A sufficient holding force can be provided by the spring 14 and sufficient durability can be obtained. In the rotating mechanism, since sufficient frictional force can be applied to the flange portion 15b of the rotation holding portion 15 by the spring 14, sufficient rotation holding force can be obtained and sufficient durability can be obtained. In addition, since the antenna 1 can be tilted at an arbitrary angle by the tilting mechanism and the rotating mechanism in the antenna 1 and can be rotated in a horizontal plane, the antenna 1 attached to the casing of the electronic device can be moved in an arbitrary direction. To be able to turn to Further, the element portion 3 of the antenna 1 has flexibility to be able to be restored when it receives an impact, and can be stored in a housing.

Next, the configuration of the antenna 50 of the second embodiment of the electronic device antenna of the present invention is shown in FIGS. FIG. 16 is a diagram showing a configuration when the antenna 50 of the second embodiment is extended, FIG. 17 is a diagram showing a configuration when the antenna 50 of the second embodiment is retracted, and FIG. It is a bottom view which shows the structure at the time of retracting the antenna 50 of a 2nd Example.
The antenna 50 of the second embodiment according to the present invention has a two-stage configuration in which the element portion can be expanded and contracted, and the other configurations are the same as those of the antenna 1 of the first embodiment. Therefore, only the configuration of the element portion will be described.

  In the antenna 50 of the second embodiment, the element portion 51 includes a first element portion 51a and a second element portion 51b, and a top portion is provided at the tip of the flexible first element portion 51a made of superelastic alloy. 2 is provided. The first element portion 51a can be accommodated in the second element portion 51b. The second element portion 51b is formed by winding an elastic metal wire in a coil shape and surrounding the outer side with an insulating tube. It is configured by covering. For this reason, the 2nd element part 51b also bends so that restoration is possible. Therefore, the stretchable two-stage element part 51 composed of the first element part 51a and the second element part 51b bends so that it can be restored when receiving an impact.

  The element portion 51 is slidably held by the slide holding portion 5 housed in the base portion 4. A screw portion 15a is formed so as to protrude downward from the base portion 4, and the antenna 50 of the second embodiment is attached to the electronic device by fixing the screw portion 15a to the casing of the electronic device. Can do. As shown in FIG. 16, in a state where the element portion 51 is extended, the sliding holding portion 5 holding the element portion 51 is tilted with respect to the base portion 4 so as to have an arbitrary angle up to approximately 90 °. be able to. In addition, in a state where the element portion 51 is tilted at an arbitrary angle with respect to the base portion 4, the element portion 51 can be rotated in a horizontal plane.

  The first element portion 51a can be accommodated in the second element portion 51b, and the element portion 51 can be contracted with respect to the base portion 4 as shown in FIG. At this time, the lower surface of the head of the antenna top 10 comes into contact with the upper end surface of the base portion 4. As shown in the drawing, a metal stopper portion 52 is fixed to the lower portion of the second element portion 51b, and a locking portion 52a having a slightly larger diameter is formed at the lower end of the stopper portion 52. When the second element portion 51b is extended with respect to the sliding holding portion 5, the locking portion 52a is engaged with the sliding holding portion 5, and therefore the extension of the second element portion 51b is stopped. Will come to be.

  In the above description, the antenna has been described as an antenna for a portable electronic device such as a mobile phone capable of receiving a television broadcast. However, the present invention is not limited to this and is applicable to an antenna for a movable electronic device that is not suitable for carrying. Is something that can be done.

It is a figure which shows an example of a structure of a portable electronic device provided with the antenna of the 1st Example of the antenna for portable electronic devices of this invention. It is a figure which shows an example of a structure of the other portable electronic device provided with the antenna of the 1st Example of the antenna for portable electronic devices of this invention. It is a figure which shows the structure of the expansion | extension state of the antenna which is 1st Example of the antenna for portable electronic devices of this invention. It is a figure which shows the structure of the contracted state of the antenna which is a 1st Example of the antenna for portable electronic devices of this invention. It is sectional drawing which shows the structure of the element part and base part of the state which shrunk the element part of the antenna which is 1st Example of this invention with respect to the base part. It is sectional drawing which shows the structure of the element part of a state which extended | stretched and tilted the element part of the antenna which is 1st Example of this invention with respect to the base part, and a base part. It is sectional drawing which shows the structure of the element part of a state which extended the element part of the antenna which is 1st Example of this invention with respect to the base part, and tilted more, and a base part. It is sectional drawing which shows the structure of the antenna top in the antenna which is 1st Example of this invention. It is sectional drawing which shows the structure of the top attachment axis | shaft in the antenna which is the 1st Example of this invention. It is a front view which shows the structure of the base part in the antenna which is the 1st Example of this invention. It is sectional drawing which shows the structure of the base part in the antenna which is 1st Example of this invention. It is sectional drawing which shows the structure of the sliding holding | maintenance part in the antenna which is 1st Example of this invention. It is sectional drawing which shows the structure of the ball | bowl holding | maintenance part in the antenna which is 1st Example of this invention. FIG. 3 is a half cross-sectional view illustrating a configuration of a rotation holding unit in the antenna according to the first embodiment of the present invention. It is a bottom view which shows the structure of the rotation holding | maintenance part in the antenna which is 1st Example of this invention. It is a figure which shows the structure of the expansion | extension state of the antenna which is a 2nd Example of the antenna for portable electronic devices of this invention. It is a figure which shows the structure of the contracted state of the antenna which is a 2nd Example of the antenna for portable electronic devices of this invention. It is a bottom view which shows the structure of the contracted state of the antenna which is a 2nd Example of the antenna for portable electronic devices of this invention. It is a figure which shows the structure of an example of the antenna for the conventional mobile telephones. It is a figure which shows the structure of an example of the antenna using the conventional rod antenna. It is a figure which shows the structure of the tilting mechanism in the antenna using the conventional rod antenna. It is a figure which shows the structure of the other example of the conventional antenna which can be tilted and rotated conventionally. It is sectional drawing which shows the structure of the other example of the conventional antenna which can be tilted and rotated conventionally.

Explanation of symbols

1 antenna, 2 top part, 3 element part, 3a element conductor, 3b insulation tube, 4 base part, 4a base body, 4c spring housing hole, 4c notch part, 4d fitting hole, 4e fitting insertion hole, 4f holding hole 4g rotation holding hole, 4h storage hole, 5 sliding holding part, 5a spherical part, 5b cylindrical part, 5c spring storage hole, 5d first protrusion, 5e second protrusion, 6 stopper part, 6a locking part, 10 antenna top, 10a head, 10b extending portion, 10c insertion hole, 11 top mounting shaft, 11a large diameter portion, 11b small diameter portion, 11c ring-shaped groove portion, 11d first through hole, 11e second through hole, 12 Slide spring, 13 rotation holding part, 13 ball holding part, 13a ball receiving part, 13b collar part, 13c extension part, 14 spring, 15 rotation holding part, 15a screw part, 15b 15c Upper cylindrical part, 15d Rotating sliding part, 15e Through hole, 16 Adhering ring, 50 Antenna, 51 Element part, 51a First element part, 51b Second element part, 52 Stopper part, 52a Locking part, 100 Mobile phone, 101 housing, 102 operation unit, 103 display unit, 200 TV receiver, 201 housing, 202 operation unit, 203 display unit, 300 antenna, 301 element, 302 holder unit, 303 top unit, 400 antenna, 401 Telescopic element, 401a Element base, 402 Antenna mounting part, 403 Rotation holding part, 404 Fixing screw, 500 Antenna, 501 Element, 502 Spherical part, 503 Holder part, 504 Top part, 505 Coil spring

Claims (5)

An element part in which a top part is formed at the tip of a flexible linear element and a stopper part is formed at the lower end;
A base portion that holds the element portion so as to be extendable and holds the element portion so as to be tiltable and rotatable in a horizontal plane;
The base part has a cylindrical base part body having a notch part cut out from the upper part to a substantially central part, and a through-hole through which the element part is slidably inserted in the base part body. A spherical portion in which a hole is formed, a rotation holding portion that is provided at a lower portion of the base portion main body and is rotatable with respect to the base portion main body, and the rotation holding portion and the spherical portion. Elastic means arranged between and biasing the spherical portion toward the upper portion of the base portion main body,
When the element part is extended with respect to the base part, the stopper part is inserted into the through hole of the spherical part from below and the element part protruding from the upper part of the spherical part is inserted into the base part. It becomes possible to position in the notch part in the main body, and by positioning the element part in the notch part, the element part can be tilted with respect to the base part, and the element part to the base part An antenna for a portable electronic device, wherein the base portion main body is rotatable with respect to the rotation holding portion in a state of being tilted with respect to the rotation holding portion.   A sphere holding portion for receiving the spherical portion is housed in the base portion, a coil spring serving as the elastic means is disposed between the sphere holding portion and the rotation holding portion, and the coil spring is a loading coil. The antenna for portable electronic devices according to claim 1, wherein   2. The antenna for a portable electronic device according to claim 1, wherein the flexible linear element has an element structure including a plurality of extendable stages.   A cylindrical portion protrudes from an upper portion of the spherical portion, and a sliding spring is provided that slidably holds the element portion in the through hole in the cylindrical portion from the spherical portion. The antenna for portable electronic devices according to claim 1 according to claim 1. Mounting means formed at the lower part of the rotation holding part protrudes from the lower end of the base part body, and the element part can be stored in the case when the attachment means is attached to the case of the electronic device. 2. The antenna for a portable electronic device according to claim 1, wherein the element portion extended from the casing is tiltable with respect to the casing and is rotatable in a horizontal plane.

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