JP2010041421A - Antenna for mobile electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of components of a tilting mechanism by making an erected portion formed in a spring serve as a ball and a push rod for a conventional antenna. <P>SOLUTION: In this antenna, an erected portion 19a, formed in the upper edge of a spring 19 stored in an antenna base 14, elastically abuts against the peripheral side face of a holding piece 18b which projects on the antenna base 14, and is formed in a lower part of a joint 18. According to this structure, the erected portion 19a serves as both a ball and a push rod of a conventional antenna, and this antenna can do without a ball and a push rod, leading to the reduction in the number of components of a tilting mechanism. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an antenna for a mobile electronic device provided in an electronic device having at least a receiving function, particularly a mobile phone capable of receiving terrestrial digital television broadcasting.

Although mobile phones are widespread, this mobile phone is equipped with an antenna for transmitting and receiving calls and information. In general, the antenna is built in the casing of the mobile phone or is a retractable antenna that can be expanded and contracted with respect to the casing of the mobile phone and can be stored in the casing when not in use.
Incidentally, in recent years, terrestrial digital television broadcasting has been started, and mobile phones that can receive a one-segment partial reception service of terrestrial digital television broadcasting are also known. In order to efficiently receive this one-segment partial reception service, it is necessary to make the antenna directivity match the direction of arrival of radio waves. For this reason, an antenna that can adjust the directivity characteristics of the antenna to be tiltable and rotatable with respect to the housing is suitable for the antenna that receives the one-segment partial reception service. In addition, it is preferable that the antenna can be stored in the casing of the mobile phone so that it can be easily carried during standby.

A configuration of a conventionally proposed antenna 100 for a mobile phone is shown in FIGS. FIG. 28 is a diagram illustrating a configuration when the antenna 100 that can be expanded and contracted in two stages is extended, and FIG. 29 is a diagram illustrating a part of the configuration of the antenna 100 illustrated in FIG. 28 in a cross-sectional view.
The conventional antenna 100 includes an element portion 111, and the element portion 111 is provided with a top portion 110 at the tip. The element unit 111 includes a first element and a second element that can be slidably accommodated in the first element. The element unit 111 is held by the antenna base 114 so as to be tiltable. A joint portion 118 is fitted to the lower portion of the element portion 111, and a flat plate-shaped sandwiching piece 118 a having rounded corners is formed at the lower end of the joint portion 118. The antenna base 114 includes a clamping part 114b that clamps the clamping piece 118a at the top, and the clamping piece 118a is pivotally supported by the shaft part 121 so as to be tiltable with respect to the clamping part 114b (that is, the antenna base 114). The antenna base part 114 and the element part 111 are slidably held in the holder 115. The holder 115 is formed with a flange at the top, and a threaded portion is formed on the outer peripheral surface thereof. By screwing the holder 115 into the casing of the mobile phone, the antenna 100 can be attached to the mobile phone. When the element portion 111 is extended to the upper end, the engaging portion 114 c formed at the lower end of the antenna base 114 comes into contact with the lower surface of the holder 115.

  A clamping piece 118a pivotally supported by the shaft 121 with respect to the clamping part 114b is moved upward by a spring part 119 via a steel ball 122 and a push rod 123 housed in the antenna base 114. It is energized. The outer peripheral surface of the ball 122 is in contact with the upper surface of the push rod 123 and the peripheral side surface of the clamping piece 118a. An enlarged flange portion 123a is formed at the lower end of the push rod 123, and the upper end of the spring portion 119 is in contact with the lower surface of the flange portion 123a. A stopper 120 is fitted to the lower part of the antenna base 114, and the lower end of the spring part 119 is in contact with the upper surface of the stopper 120. As a result, when the biasing force of the spring portion 119 is applied to the peripheral side surface of the holding piece 118a via the push rod 123 and the ball 122, the element portion 111 can be stably held at the tilt angle when tilted. Become.

  The conventional antenna 100 for portable electronic devices shown in FIGS. 28 and 29 has a tilting mechanism that tilts and holds the element portion 111 at an arbitrary angle. In this tilting mechanism, at least the ball 122, the push rod 123, and the spring portion 119 are required, and there is a problem that the number of parts increases.

  Accordingly, an object of the present invention is to provide an antenna for a portable electronic device that can reduce the number of components in the tilting mechanism.

  In order to achieve the above object, an antenna for a portable electronic device according to the present invention has an upright portion formed upright at the upper end of a coil spring, and is housed in a through hole of the antenna base portion. The most important feature is that the end of the upright portion protruding from the upper end is in contact with the peripheral side surface of the holding piece, and the holding piece is provided with a spring portion that applies a biasing force by a coil spring.

  According to the present invention, since the standing portion formed in the spring portion functions as a ball and a push rod in the conventional antenna, the ball and the push rod can be omitted, and the number of parts of the tilting mechanism can be reduced. Can be reduced.

An example of the configuration of an antenna 1 for a portable electronic device according to an embodiment of the present invention is shown in FIG. FIG. 1 is a cross-sectional view partially showing a half-sectional view of a configuration when an antenna 1 that can be expanded and contracted in two stages is extended.
The antenna 1 according to the embodiment of the present invention shown in FIG. 1 includes a pipe-shaped first element 12 having a top portion 10 provided at the tip, and a second slidably housed inside the first element 12. An element portion including the element 13 is provided. A lower portion of the second element 13 is fitted and fixed to the joint portion 18, and the joint portion 18 is held on the antenna base portion 14 so as to be tiltable. The top portion 10 is a knob that is gripped when the element portion including the first element 12 and the second element 13 is expanded and contracted, and a disc-shaped portion made of a synthetic resin is fixed to the upper portion of the metal top plug 11. Yes. The lower part of the top plug 11 is inserted into the inside from the upper end of the first element 12 and fixed to the upper end of the first element 12 by caulking. The first element 12 is composed of a metal pipe, and the inside is a storage space for storing the second element 13. The second element 13 is configured by covering a flexible element conductor 13a made of a superelastic alloy with a flexible insulating tube 13d. A sliding spring 17 inserted into the upper portion of the second element 13 is in elastic contact with the inner peripheral surface of the first element 12 so that the second element 13 can slide relative to the first element 12. . As a result, the second element 13 can be pulled out and held at an arbitrary length from the first element 12. The lower part of the second element 13 is knurled and fitted into a metal joint 18. At the lower end of the joint portion 18, a later-described sandwiching piece 18 b having a flat plate shape and rounded corners on the peripheral side surface is formed.

  The antenna base portion 14 includes a clamping portion 14b, which will be described later, for clamping the clamping piece 18b formed on the joint portion 18 from both sides. The clamping piece 18b is connected to the clamping portion 14b (that is, the antenna base portion 14) by the shaft portion. It is pivotally supported so that it can tilt. A through hole is formed in the metal antenna base 14, and a spring portion 19 is accommodated in the through hole. Then, a stopper 20 is press-fitted from the lower end of the through hole so that the spring portion 19 does not escape downward from the through hole. The upper end of the spring portion 19 is integrally formed with an upright portion in which one turn of the coil spring is raised, and the tip of the upright portion elastically contacts the peripheral side surface of the holding piece 18b. As a result, the antenna unit can be tilted and held at a desired angle with respect to the antenna base unit 14. The outer diameter of the antenna base 14 is substantially equal to the outer diameter of the first element 12. The antenna base 14 and the first element 12 are held so as to be slidable in the vertical direction within the holder 15. The holder 15 includes a cylindrical main body portion having a flange portion 15a formed thereon. A screw portion 15b is formed on the outer peripheral surface of the cylindrical main body, and the antenna 1 can be attached to the mobile phone by screwing the main body to, for example, a casing of the mobile phone. A drum-shaped spring 16 is housed in a through-hole provided in the main body, and the antenna base 14 and the first element 12 can be slid up and down in the holder 15 by the action of the drum-shaped spring 16. It will be retained. FIG. 1 shows a state in which the second element 13 is extended from the first element 12 and the element portion is slid so that the holder 15 is positioned on the upper part of the first element 12.

Next, an assembly process of the antenna 1 according to the embodiment of the present invention will be described with reference to an exploded view of the antenna 1 according to the present invention shown in FIG. 2. Prior to the description, main parts of the antenna 1 constituting the antenna 1 will be described. The configuration is shown in FIGS.
13 is a front view showing the configuration of the antenna base 14, FIG. 14 is a side view showing the configuration of the antenna base 14, FIG. 15 is a bottom view showing the configuration of the antenna base 14, and FIG. 14 is a top view showing the configuration of the antenna 14, FIG. 17 is a front view showing the configuration of the antenna base 14 by a cross-sectional view taken along the line cc, and FIG. 18 is a sectional view of the configuration of the antenna base 14 taken along the line bb. It is a side view shown with a sectional view.
As shown in these drawings, the antenna base portion 14 is made of a metal such as brass and is formed of a sandwiching portion 14b formed so as to face the tip portion, and a cylindrical main body portion 14a provided at the lower portion of the sandwiching portion 14b. It is configured. A sandwiching groove 14f in which the sandwiching piece 18b formed in the joint portion 18 is fitted is formed substantially in the center by the sandwiching portion 14b formed with a rounded upper portion. Further, the insertion portion 14b is formed with an insertion hole 14c in the lateral direction. By inserting the holding piece 18b into the holding groove 14f and fitting a pin serving as a shaft portion into the insertion hole 14c, the joint portion 18 is The antenna base 14 is pivotally supported so as to be tiltable. Further, a through hole 14g is formed in the main body portion 14a as a whole, and a horizontally long and narrow insertion groove 14e is formed at the tip of the through hole 14g. The standing portion of the spring portion 19 protrudes from the insertion groove 14e. An engaging portion 14d having a slightly larger outer diameter is formed at the lower portion of the main body portion 14a. The engaging portion 14d comes into contact with the lower end of the holder 15 when the element portion including the first element 12 and the second element 13 is extended to the upper end.

Next, FIG. 19 is a front view showing the configuration of the joint portion 18, FIG. 20 is a side view of the configuration of the joint portion 18, FIG. 21 is a bottom view showing the configuration of the joint portion 18, and FIG. FIG. 23 is a top view showing the configuration of the joint portion 18, FIG. 23 is a front view showing the configuration of the joint portion 18 by a cross-sectional view cut along line ee, and FIG. 24 is the configuration of the joint portion 18 taken along line dd. It is a side view shown with sectional drawing cut | disconnected by.
As shown in these drawings, the joint portion 18 is made of a metal body such as brass and has a cylindrical main body portion 18a closed at one end and a flat plate-shaped sandwiching piece 18b extending from the lower end of the main body portion 18a. ing. A fitting insertion hole 18f into which the lower portion of the second element 13 is fitted is formed in the main body portion 18a, and an insertion hole 18e is formed in the flat sandwiching piece 18b. The holding piece 18b is inserted into the holding groove 14f between the holding portions 14b of the antenna base portion 14, and a pin inserted from one insertion hole 14c of the holding portion 14b is inserted through the insertion hole 18e formed in the holding piece 18b. The other insertion hole 14c is inserted, the tip of the pin is processed so that the pin does not come out, and the shaft portion 21 is fixed to the clamping portion 14b. The peripheral side surface of the plate-shaped sandwiching piece 18b has a semicircular shape with rounded corners, and a tapered hole portion 18c that is a recess is formed on the lower surface of the peripheral side surface, from the tapered hole portion 18c. Engagement portions 18d that are rectangular recesses are formed at positions of about ± 90 °. The standing part of the spring part 19 is elastically pressed on the peripheral side surface of the clamping piece 18b. As a result, when the antenna portion (joint portion 18) is substantially upright, the upright portion of the spring portion 19 is engaged with the tapered hole portion 18c, so that a click feeling is obtained and the upright portion is stably upright. . Further, when the antenna portion (joint portion 18) is tilted by approximately 90 °, the rising portion of the spring portion 19 is engaged with the engaging portion 18d, so that a click feeling can be obtained and the tilted state can be stably maintained. It becomes like this. Note that the lower portion of the second element 13 is fitted into the joint portion 18 by being inserted into the fitting hole 18f and the lower portion of the second element 13 subjected to knurling is fitted and crimped.

  Next, FIG. 25 is a side view showing the configuration of the spring portion 19, FIG. 26 is a top view showing the configuration of the spring portion 19, and FIG. 27 is a front view showing the configuration of the spring portion 19. As shown in these figures, the spring portion 19 is a standing spring formed integrally with a coil spring 19b in which a wire material having elasticity such as phosphor bronze is wound in a coil shape, and the tip of the coil spring 19b is raised for one turn. It is comprised from the part 19a. The coil spring 19b is wound at an interval, and when the spring portion 19 is accommodated in the through hole 14g in the antenna base portion 14 and the stopper 20 is press-fitted from the lower end of the antenna base portion 14, the spring portion 19 is It comes to be compressed in the through hole 14g. Further, the standing portion 19a protrudes from the insertion groove 14e formed at the tip of the through hole 14g, and the tip of the standing portion 19a comes into elastic contact with the peripheral side surface of the clamping piece 18b in the joint portion 18.

  Returning to FIG. 2, the assembly process of the antenna 1 according to the embodiment of the present invention will be described. The body portion 10 a of the disc-shaped top portion 10 has a storage hole 10 b formed in the bottom surface, and the top of the storage hole 10 b A disc-shaped mounting portion 11a formed on the top of the plug 11 is fixed. In this case, the top portion 10 can be molded to the attachment portion 11a, or the attachment portion 11a can be fitted into the accommodation hole 10b of the top portion 10 and fixed by adhesion or the like. As a result, a round bar-shaped fitting insertion portion 11 c having a small diameter of the top plug 11 protrudes from the lower surface of the top portion 10, and this fitting insertion portion 11 c is the upper end of the pipe portion 12 b constituting the first element 12. To be inserted into the pipe portion 12b. Next, when caulking is performed on the groove portion 12a formed on the upper portion of the pipe portion 12b, the groove portion 12a engages with the groove portion 11b formed on the fitting insertion portion 11c, and the top portion 10 of the first element 12 is engaged. It comes to stick to the upper end.

  Next, the second element 13 is made of an element conductor 13a made of a superelastic alloy, and an enlarged diameter portion 13b is formed at the tip of the element conductor 13a, and a knurled portion 13c is formed at the lower portion. A sliding spring 17 made of metallic material having elasticity such as phosphor bronze is inserted into the element conductor 13a from below the element conductor 13a, and then a flexible resin insulating tube 13d is inserted into the element conductor 13a. . As a result, the entire element conductor 13a is covered with the insulating tube 13d except for the portion through which the sliding spring 17 is inserted, and only the lower knurled portion 13c is exposed. Therefore, the joint portion 18 is fixed to the lower portion of the second element 13 by press-fitting the knurled portion 13c from above the joint portion 18 into the fitting insertion hole 18f. When the second element 13 in this state is inserted into the pipe portion 12b from below the first element 12, the second element 13 is elastically moved to the pipe portion by the action of the spring portion 17a whose center portion is bulged outward. It slides in 12b. Next, by processing so that the diameter of the lower end of the pipe portion 12b is reduced, the second element 13 cannot be pulled out even if it is pulled out from the first element 12. A spacer may be inserted through the element conductor 13a so as to be disposed between the sliding spring 17 and the insulating tube 13d.

  The holder 15 includes a cylindrical main body portion having a flange portion 15a formed on the upper portion, and a screw portion 15b is formed on the outer peripheral surface of the cylindrical main body portion. Then, a drum-like spring 16 made of metal having elasticity such as phosphor bronze is inserted into a through-hole formed in the axial direction over the entire holder 15, and the holder 15 is inserted from under the joint portion 18. Let Since the central portion of the drum-shaped spring 16 is bulged inward, the joint portion 18 and the first element 12 are slidably elastically held with respect to the holder 15. Next, the clamping piece 18b formed at the lower part of the joint part 18 protruding from the bottom of the holder 15 is positioned in the clamping groove 14f in the clamping part 14b formed at the upper part of the antenna base 14, and one clamping part The shaft portion 21 inserted through the insertion hole 14c of 14b is inserted into the insertion hole 18e of the sandwiching piece 18b and inserted into the insertion hole 14c of the other sandwiching portion 14b. Here, by performing processing so that the shaft portion 21 does not come out of the insertion hole 14c, the joint portion 18 is pivotally supported by the antenna base portion 14 so as to be tiltable.

In this state, the spring part 19 is inserted from the upright part 19a into the through hole 14g of the antenna base part 14 from below, and is aligned with the insertion groove 14e formed at the upper end of the through hole 14g. The upright part 19a formed in the upper part protrudes upward. Next, when the stopper 20 is pressed into the through hole 14g of the antenna base 14 from below and the coil spring 19b is fixed so as to be compressed, the tip of the upright portion 19a protruding upward from the insertion groove 14e is pinched by the clamping piece 18b. It comes to elastically contact with the peripheral side surface. That is, the coil spring 19b applies a biasing force along the axial direction of the antenna base 14 to the peripheral side surface of the sandwiching piece 18b via the upright portion 19a. At this time, even if the upright portion 19a is integrally formed as one turn of the coil spring 19b, the posture of the upright portion 19a is regulated by the insertion groove 14e. Can be given energizing power. The stopper 20 has a main body 20a having a circular cross section made of a metal such as brass. The upper portion of the main body 20a is formed in a tapered shape with a gradually decreasing diameter, and is formed at the lower end of the main body 20a. A flange portion 20b having a large diameter is formed. When fixing the stopper 20, the stopper 20 is inserted into the through hole 14 g of the antenna base 14 from the tapered upper portion, and is press-fitted until the flange portion 20 b comes into contact with the lower surface of the antenna base 14.
Through the above steps, the antenna 1 having the configuration shown in FIG. 1 can be assembled.

The structure of the lower part of the antenna 1 according to the present invention shown in FIG. 1 assembled in this way is shown in FIG. 3 to FIG. 3 is an enlarged front view showing the configuration of the lower portion of the antenna 1, FIG. 4 is an enlarged front view showing the configuration of the lower portion of the antenna 1, and FIG. FIG. 6 is a top view shown by a cross-sectional view taken along the line aa showing an enlarged view, and FIG. 6 is a side view showing the configuration of the lower part of the antenna 1 by an enlarged cross-sectional view.
As shown in these drawings, the joint portion 18 to which the lower portion of the second element 13 is fixed has a flat plate-shaped sandwiching piece 18b protruding from the lower end sandwiched by the sandwiching portion 14b of the antenna base 14, and It is pivotally supported by a shaft portion 21 that penetrates the sandwiching piece 18b and the sandwiching portion 14b. The spring portion 19 is housed in the through hole 14g of the antenna base 14, and the upper surface of the stopper 20 fixed to the lower portion of the through hole 14g of the antenna base 14 is in contact with the lower end of the coil spring 19b. The coil spring 19b is compressed to generate an upward biasing force. The standing portion 19a of the spring portion 19 protrudes upward from a horizontally long insertion groove 14e formed at the upper end of the through hole 14g, and the tip of the standing portion 19a is biased by the coil spring 19b on the peripheral side surface of the holding piece 18b. Abut with.

  Here, FIG. 7 shows a state in which the element portion including the first element 12 and the second element 13 is gripped and tilted in the antenna 1, and the configuration of the joint portion between the joint portion 18 and the antenna base portion 14 is enlarged. As shown in FIG. As shown in these drawings, when the joint portion 18 to which the element portion is fixed to the antenna base portion 14 is tilted to the right by about 90 °, the engagement formed on the peripheral side surface of the sandwiching piece 18b The tip of the standing portion 19a of the spring portion 19 is engaged with the portion 18d, and the element portion is stably held by the antenna base 14 at this tilt angle. Further, a click feeling can be obtained when the upright portion 19a is engaged with the engaging portion 18d. Further, as shown by a two-dot chain line, the joint portion 18 to which the element portion is fixed can be tilted with respect to the antenna base portion 14 at an arbitrary angle within a range of about 180 °. In this case, as shown in FIG. 8, when the tip of the upright portion 19 a is not engaged with the tapered hole portion 18 c or the engaging portion 18 d, the upright portion 19 a of the holding piece 18 b is shown as indicated by a two-dot chain line. The coil spring 19b is pushed and contracted slightly by being pushed by the peripheral side surface and further lowered, and the urging force is increased. Therefore, even if the antenna portion is tilted to an arbitrary angle, the spring portion 19 is stable. And will be held. When tilted, when the upright portion 19a is engaged with the tapered hole portion 18c formed on the peripheral side surface, a click feeling can be obtained, and the upright portion 19a is formed on the peripheral side surface. A click feeling can also be obtained when engaged with the engaging portion 18d. FIG. 6 shows the state when the element portion is erected. As shown in FIG. 6, in this case, the tip of the upright portion 19a is engaged with the tapered hole portion 18c. The portion is stably held by the antenna base 14 in an upright state.

Next, an example of the configuration of a mobile phone 50 including the antenna 1 according to the embodiment of the present invention is shown in FIGS. 9 is a perspective view showing a state in which the antenna 1 according to the present invention is extended from the mobile phone 50 and tilted, and FIG. 10 shows a state in which the antenna 1 according to the present invention is housed in the mobile phone 50. FIG. 11 is a front view showing a tilting range when the antenna 1 according to the present invention is extended from the mobile phone 50. FIG. 12 is a front view showing the antenna 1 according to the present invention extended from the mobile phone 50. It is a side view which shows the rotation range at the time.
As shown in these drawings, the antenna 1 according to the present invention is attached to one side surface of a housing 50 a constituting a mobile phone 50. The casing 50a is provided with an operation unit including a numeric keypad and operation buttons (not shown) and a display 51 including liquid crystal. The antenna 1 can be tilted with respect to the housing 50a when extended, and in the extended state of the antenna 1 shown in FIG. The element portion composed of the elements 13 is substantially perpendicular to the case 50a which is turned sideways. In the antenna 1, the second element 13 can be pulled out from the first element 12, and the length of the antenna 1 can be changed by being extendable in two stages. Further, since the holder 15 is fixed in a circular recess formed on one side surface of the casing 50a, the holder 15 is disposed at a position recessed from the surface of the casing 50a as shown in FIG. . Therefore, when the antenna 1 is retracted, it can be stored so that the top surface of the top portion 10 is substantially flush with the surface of the housing 50a as shown in FIG.

  The extended antenna 1 can be tilted at an arbitrary angle with respect to the housing 50a, and the tilting range is 0 ° to approximately ± 90 ° as shown in FIG. Further, the extended antenna 1 is rotatable about the antenna base 14 as a rotation axis with respect to the casing 50a, and the rotation range is rotated at an arbitrary angle of about 360 ° as shown in FIG. be able to. As a result, the directivity of the antenna 1 attached to the mobile phone 50 can be directed in a desired direction, and the length of the antenna 1 can be changed. An antenna suitable for the mobile phone 50 capable of receiving can be obtained.

In the above description, the antenna for a portable electronic device such as a cellular phone that can receive a one-segment partial reception service of digital terrestrial television broadcasting has been described. However, the antenna is not limited to this, and tilts and rotates in a horizontal plane. It can be applied generally to antennas that need to do.
Moreover, although the antenna part which consists of a 1st element and a 2nd element can be expanded-contracted in 2 steps | paragraphs, it is not restricted to this, It is good also as an antenna part of 1 step | paragraph structure which consists only of a 1st element.

It is sectional drawing which shows a part of example of a structure of the antenna for portable electronic devices made into the Example of this invention by a partial half sectional view. 1 is an exploded view of an antenna according to the present invention. It is a front view which expands and shows the structure of the lower part of the antenna concerning this invention. It is a front view which expands and shows the structure of the lower part of the antenna concerning this invention in sectional drawing. It is a top view shown with sectional drawing cut | disconnected by the aa line which expands and shows the structure of the lower part of the antenna concerning this invention. It is a side view which expands and shows the structure of the lower part of the antenna concerning this invention by sectional drawing. It is a figure which shows the state which inclined the element part in the antenna concerning this invention. It is a figure which expands and shows a part in the state which made the element part tilt in the antenna concerning this invention. It is a perspective view which shows the state which extended and tilted the antenna concerning this invention from a mobile telephone. It is a perspective view which shows the state which accommodated the antenna concerning this invention in the mobile telephone. It is a front view which shows the tilting range at the time of extending | stretching the antenna concerning this invention from a mobile telephone. It is a side view which shows the rotation range at the time of extending | stretching the antenna concerning this invention from a mobile telephone. It is a front view which shows the structure of the antenna base concerning the antenna of this invention. It is a side view which shows the structure of the antenna base concerning the antenna of this invention. It is a bottom view which shows the structure of the antenna base concerning the antenna of this invention. It is a top view which shows the structure of the antenna base concerning the antenna of this invention. It is a front view which shows the structure of the antenna base concerning the antenna of this invention with sectional drawing cut | disconnected by the cc line. It is a side view which shows the structure of the antenna base concerning the antenna of this invention with sectional drawing cut | disconnected by the bb line. It is a front view which shows the structure of the joint part concerning the antenna of this invention. It is a side view which shows the structure of the joint part concerning the antenna of this invention. It is a bottom view which shows the structure of the joint part concerning the antenna of this invention. It is a top view which shows the structure of the joint part concerning the antenna of this invention. It is a front view shown with the sectional view which cut the composition of the joint part concerning the antenna of the present invention by the ee line. It is a side view shown with the sectional view which cut the composition of the joint part concerning the antenna of the present invention by the dd line. It is a side view which shows the structure of the spring part concerning the antenna of this invention. It is a top view which shows the structure of the spring part concerning the antenna of this invention. It is a front view which shows the structure of the spring part concerning the antenna of this invention. It is a figure which shows the structure of an example of the antenna for portable telephones conventionally proposed. It is a figure which expands and shows a part of structure of the antenna conventionally proposed by sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna, 10 top part, 10a body part, 10b accommodating hole, 11 top plug, 11a attachment part, 11b groove part, 11c fitting insertion part, 12 1st element, 12a groove part, 12b pipe part, 13 2nd element, 13a element Conductor, 13b Expanded part, 13c Knurled part, 13d Insulating tube, 14 Antenna base part, 14a Body part, 14b Holding part, 14c Insertion hole, 14d Engagement part, 14e Insertion groove, 14f Holding groove, 14g Through hole, 15 Holder , 15a collar part, 15b screw part 15b, 16 drum spring, 17 sliding spring, 17a spring part, 18 joint part, 18a body part, 18b clamping piece, 18c tapered hole part, 18d engagement part, 18e insertion hole 18f fitting hole, 19 spring part, 19a standing part, 19b Spring, 20 stopper, 20a body part, 20b collar part, 21 shaft part, 50 mobile phone, 50a case, 51 display, 100 antenna, 110 top part, 111 element part, 114 antenna base part, 114a body part, 114b Part, 114c engaging part, 115 holder, 118 joint part, 118a clamping piece, 119 spring part, 120 stopper, 121 shaft part, 122 ball, 123 push rod, 123a collar part

Claims (3)

An element part,
A flat plate-shaped clamping piece is formed at the lower end, and a joint portion in which the lower portion of the element portion is fixed to the upper portion;
A cylindrical antenna base having a through hole formed in the upper portion of the holding portion that tiltably holds the element portion by holding the holding piece and pivoting on the shaft portion
A standing portion formed integrally with the upper end of the coil spring; and housed in the through-hole of the antenna base, the tip of the standing portion protruding from the upper end of the antenna base A spring portion that applies an urging force by the coil spring to the clamping piece by abutting on a peripheral side surface;
A stopper fitted to the lower end of the antenna base so that the spring part does not come out downward from the inside of the through hole of the antenna base;
An antenna for portable electronic equipment, comprising:   The upright portion protrudes toward the clamping piece through a horizontally elongated insertion groove formed at the upper end of the through hole in the antenna base, and the shape of the insertion groove is substantially the same as the shape projected from the upright portion. The shape of the upright portion is regulated so that the posture of the upright portion is not inclined by the insertion groove when the tip of the upright portion is in contact with the peripheral side surface of the holding piece. The antenna for portable electronic devices according to 1.   A plurality of concave portions for holding the element portion at a predetermined angle are formed on the peripheral side surface of the sandwiching piece, and the element portion is tilted so that the standing portion of the spring portion is placed on any of the concave portions. 2. The antenna for a portable electronic device according to claim 1, wherein a click feeling is obtained when the portions are engaged.

Images