JP4782709B2 - Antenna device - Google Patents

Description

  The present invention relates to an antenna device for receiving a terrestrial television broadcast indoors.

In a conventional antenna device that receives terrestrial television broadcasts indoors, for example, a ring-shaped antenna is tilted with respect to the antenna case so as to reduce the packaging volume. This antenna device can be placed directly on a television or a table when the antenna is turned so as to stand upright with respect to the antenna case, and the antenna is turned so as to be substantially parallel to the antenna case. In this case, the antenna case can be attached to a vertical wall surface. However, since the conventional antenna apparatus can tilt the tilt angle steplessly, there are cases where the antenna is not always received in the best orientation. Further, the holding force of the antenna in the antenna case tends to loosen gradually as the number of tilts increases, and the orientation of the antenna may become unstable in each use state of direct placement and wall mounting. Furthermore, since the antenna is tilted with a certain stress and the fixed position of the antenna is not determined, there is a possibility that a product or a finger is caught and damaged.
JP 2005-94167 A

  Therefore, antennas shown in FIGS. 58 to 60 have been proposed. The antenna 100 shown in these drawings includes a housing 102 and an antenna portion 101 fixed to the housing 102 so as to be tiltable. FIG. 58 shows the antenna 100 in a state where the antenna unit 101 is tilted and folded so as to be substantially parallel to the housing 102, and the antenna 100 is packed in this state. FIG. 59 shows the antenna 100 in a state where the antenna unit 101 is tilted so as to be substantially upright from the housing 102, and the antenna 100 is used by being placed directly on a television or a table. It is said that. FIG. 60 shows the antenna 100 in a state where the antenna unit 101 is tilted and opened so as to be substantially parallel to the housing 102. The antenna 100 is attached to a vertical wall surface for use.

In this antenna 100, one edge portion of the upper surface of the housing 102 is cut off, and a shaft portion 102b is formed at this portion, and an engagement piece 102a elastically supported on the upper surface of the cut-out portion is formed. Has been. One end of the engaging piece 102a is formed integrally with the casing 102 and extends from the casing 102, and the other end is bent at a right angle and the tip is tapered and sharp. In addition, a cylindrical portion having an insertion hole is formed at one end of the antenna portion 101, and the shaft portion 102b is inserted through the insertion hole. Thereby, the tip of the engagement piece 102a is pressed against the outer peripheral surface of the cylindrical portion, and the antenna portion 101 can tilt with respect to the housing. In addition, concave portions 101 a having a tapered cross section are formed at three locations on the outer peripheral surface of the cylindrical portion of the antenna portion 101. These concave portions 101a are formed at predetermined angles with respect to the rotation center of the shaft portion 102b. Thus, when the antenna unit 101 is folded so as to be substantially parallel to the housing 102, when the antenna unit 101 is erected so as to be substantially upright from the housing 102, the antenna unit 101 is substantially parallel to the housing 102. When opened, the tip of the engagement piece 102a is engaged with any of the recesses 101a, and the posture of the antenna unit 101 is stabilized in that state.
However, in the antenna 100 described above, while the antenna unit 101 is tilted so as to be opened from the standing state, and while the antenna unit 101 is tilted so as to be folded from the standing state, There is a problem in that the tilt of the antenna unit 101 does not stop and a finger or the like may be caught between the antenna unit 101 and the housing 102 and may be damaged.

  Accordingly, an object of the present invention is to provide an antenna device in which a finger or the like is not caught and damaged even if the antenna portion can be tilted with respect to the base portion.

  In order to achieve the above-described object, the antenna device of the present invention is configured so that when the antenna portion is tilted with respect to the base portion, the second protrusion of the protrusion is formed from the first recess formed around the other surface of the shaft portion. The tilting holding force is adjusted by sliding out the second protrusion and sliding in the second recess, and the second protrusion is fitted into the next first recess by further tilting. The most important feature is that the tilt angle of the antenna portion is regulated by engaging the first protrusion with an engaging protrusion formed around one surface of the shaft portion.

  In the antenna device of the present invention, when the antenna portion is tilted with respect to the base portion, the second protrusion portion of the protrusion portion moves out of the first recess portion formed around the other surface of the shaft portion and rotates. The tilt holding force is adjusted by sliding the second projection in the recess, and further tilting causes the second projection to fit into the next first recess, and the first projection is the shaft portion. Since the tilting angle of the antenna unit is restricted by engaging with the engaging protrusions formed on the periphery of the one surface, the tilt holding force is maintained during the tilting from the standing state to the open state. It is possible to prevent the finger or the like from being damaged by adjusting.

The configuration of an antenna device according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a front view showing the configuration of the antenna device according to the present invention, FIG. 2 is a rear view showing the configuration of the antenna device according to the present invention, and FIG. 3 is the right side showing the configuration of the antenna device according to the present invention. FIG. 4 is a left side view showing the configuration of the antenna device according to the present invention, FIG. 5 is a top view showing the configuration of the antenna device according to the present invention, and FIG. 6 is the antenna according to the present invention. FIG. 7 is a bottom view showing the configuration of the device, FIG. 7 is a top view shown in a sectional view taken along line AA (see FIG. 4) showing the configuration of the antenna device according to the present invention, and FIG. It is a left view which shows the structure of this antenna apparatus with sectional drawing cut | disconnected in the center.
As shown in these drawings, the antenna device 1 includes a rectangular substantially flat resin-shaped antenna portion 2 formed so that its cross-sectional shape is slightly bent in a waveform, and a substantially central portion of the antenna portion 2. Resin in a substantially rectangular parallelepiped shape that rotatably supports a front panel 3 and a support panel 4 that are molded into a long and narrow rectangular shape that is fixed so as to be sandwiched, and a protrusion 4b that is formed at the bottom of the support panel 4 The base 5 is composed of a molded base 5 and a base 6 made of resin in the shape of a disc fixed to the lower surface of the base 5.

  The antenna unit 2 to which the front panel 3 and the support panel 4 are fixed is supported so as to be tiltable with respect to the base 5. FIG. 3 shows the antenna in a state where the antenna 2 is most upright with respect to the base 5. A device 1 is shown. The antenna device 1 in this state is in a state of being used by being placed directly on a television or a table. In addition, a weight plate 9a having a predetermined weight is attached to the inside of the base 6 as shown in FIG. 8 so that the antenna device 1 does not fall down when it is used directly. FIG. 9 shows an intermediate state in which the antenna unit 2 is tilted with respect to the base 5, and this intermediate state is a state in which the antenna device 1 is not used. Further, FIG. 10 shows the antenna device 1 in a state where the antenna unit 2 is most inclined with respect to the base unit 5. The antenna device 1 in this state is in a state of being used by being attached to a vertical wall surface, or in a state of packing the antenna device 1. As described above, before describing the configuration in which the antenna unit 2 is tiltably supported with respect to the base 5, the detailed configuration of each unit configuring the antenna device 1 will be described below.

  First, a detailed configuration of the antenna unit 2 is shown in FIGS. FIG. 23 is a front view showing the configuration of the antenna unit 2, FIG. 24 is a rear view showing the configuration of the antenna unit 2, and FIG. 25 is a top view showing the configuration of the antenna unit 2. FIG. FIG. 26 is a side view showing the configuration of the antenna unit 2, and FIG. 26B is a side view showing the configuration of the antenna unit 2 by a cross-sectional view taken along line BB (see FIG. 23). The antenna portion 2 is formed by molding a resin, and as shown in these drawings, the antenna portion 2 is formed in an arc shape from the central portion of the rectangular main body portion 2a toward both end portions in the horizontal direction, and has a horizontal cross section. It is formed in a waveform. A rectangular notch 2b is formed at the center of the main body 2a, leaving the top. A plurality of protrusions for forming a plurality of engaging grooves 20 are formed on the facing surfaces of the lower portion of the notch 2b. The engagement groove 20 is engaged with an engagement piece formed on the support panel 4 when the support panel 4 is fitted to the antenna portion 2. In addition, a first storage groove 21 is formed in a rectangular loop shape along the rectangular edge on the back surface of the antenna unit 2, and a second storage groove 22 that is similar in shape to the first storage groove 21 is formed. It is formed in a rectangular loop shape. In addition, a linear fourth storage groove 24 is formed outside the first storage groove 21 at the lower part of the back surface of the main body 2a, and a linear shape is formed between the first storage groove 21 and the second storage groove 22. The third storage groove 23 is formed. The length of the third storage groove 23 is slightly shorter than the length of the fourth storage groove 24.

  FIG. 21 shows a configuration in which an antenna element is provided in the antenna unit 2 having the above configuration. FIG. 21 is a rear view showing the configuration of the antenna unit 2. As shown in this figure, in the groove of the first storage groove 21, an electric wire covered with an insulating tube is stored to form a first loop element 2c having a rectangular loop shape. Further, in the groove of the second storage groove 22, an electric wire covered with an insulating tube is stored to form a second loop element 2d having a rectangular loop shape. Further, the first storage element 2e having a linear shape is formed by storing an electric wire covered with an insulating tube in the groove of the third storage groove 23, and the insulating tube is formed in the groove of the fourth storage groove 24. The electric wire covered with is accommodated to form a linear second parasitic element 2f. As described above, the first loop element 2c and the second loop element 2d form a double loop element having a different length, and at the lower part of the first loop element 2c and the second loop element 2d (near the power feeding unit). By arranging the first parasitic element 2e and the second parasitic element 2f along the antenna unit 2, the antenna unit 2 operates in a wide frequency range of 470 MHz to 770 MHz, and can be applied to digital terrestrial broadcasting ( For the principle of this antenna, see Japanese Patent Application Laid-Open No. 2006-295545). A lead line 2g is drawn out from the first loop element 2c and the second loop element 2d, and the leading ends of the lead line 2g are connected to each other to serve as a feeding point. As shown in FIG. 8, the feeding point at the tip of the lead wire 2 g is connected to the antenna substrate 9. The antenna substrate 9 is provided with an amplifier, a matching circuit, and the like that amplify the received signal received by the antenna unit 2. By connecting the cable 7 led out from the antenna substrate 9 to a receiver such as a television receiver, a reception signal from the antenna device 1 is supplied to the receiver. A switch knob 8 provided on the right side surface of the base 5 is a switch for turning on / off an amplifier provided on the antenna substrate 9.

Next, the detailed structure of the front panel 3 is shown in FIGS. 27 is a front view showing the configuration of the front panel 3, FIG. 28 is a rear view showing the configuration of the front panel 3, FIG. 29 is a side view showing the configuration of the front panel 3, and FIG. 30 is a front panel. 3 is a top view showing the configuration of 3, and FIG. 31 is a bottom view showing the configuration of the front panel 3. As shown in FIG.
As shown in these drawings, the front panel 3 is an elongated rectangular resin-molded panel, and the back side is open. The main body 3a of the front panel 3 has a cross section formed in a mountain shape, and is formed so that the thickness gradually decreases toward the top. Inside the main body portion 3a, mounting bosses 3c, to which screws are respectively screwed, are formed so as to extend from the inner surface on the front surface side to the rear surface side. The screws that are screwed into the mounting bosses 3c are screws that are inserted into the mounting holes of the support panel 4 that is mounted to face the front panel 3, and the front panel 3 and the support panel 4 are screwed together. The antenna unit 2 is sandwiched and fixed. Engagement pieces 3b are respectively formed at the edges on both sides of the opened back surface slightly above the center of the main body 3a. The engagement piece 3b is formed to extend so as to protrude to the back surface side, and its tip end portion is formed in a hook shape. When the front panel 3 is attached to the antenna unit 2, the engagement piece 3 b is engaged with the side edge of the notch 2 b formed in the antenna unit 2.

Next, the detailed structure of the support panel 4 is shown in FIGS. 32 is a front view showing the configuration of the support panel 4, FIG. 33 is a rear view showing the configuration of the support panel 4, FIG. 34 is a right side view showing the configuration of the support panel 4, and FIG. 36A is a top view showing the configuration of the panel 4, FIG. 36A is a left side view showing an enlarged configuration of a part of the protruding portion 4b formed on the support panel 4, and FIG. FIG. 37 is an enlarged right side view showing a configuration of a part of the protruding portion 4b formed on the support panel 4, and FIG. 37 is a side view showing the configuration of the support panel 4 in a sectional view cut at the center. 38 is a bottom view showing the structure of the support panel 4 in a cross-sectional view taken along the line CC.
As shown in these drawings, the support panel 4 is an elongated rectangular resin-molded panel, and the back side is opened. The main body 4a of the support panel 4 has a U-shaped cross section and an open rear surface, and a protrusion 4b having a triangular cross section is formed at substantially the center of the lower front side of the main body 4a. ing. The triangular apex of the protruding portion 4b is rounded, and a through-hole 40 having a circular cross section is formed inside thereof. As shown in FIG. 36 (b), two pairs of sandwiching pieces 44 made of a pair of protrusions are formed on the right side surface of the protruding portion 4 b so as to extend opposite each other around the through hole 40. A ring-shaped protrusion 41 b that is substantially concentric with the through hole 40 is formed so as to surround the sandwiching piece 44. By forming this ring-shaped projection 41b, a recess 43b is formed inside thereof, and the through hole 40 and the clamping piece 44 are disposed in the recess 43b.

Further, as shown in FIG. 36 (a), a ring-shaped protrusion 41a substantially concentric with the through hole 40 is formed on the left side surface of the protrusion 4b, and a recess 43a is formed inside thereof. A pair of protrusions 42 protruding inward from a predetermined position of the ring-shaped protrusion 41a are formed integrally with the ring-shaped protrusion 41a. The inner peripheral surface of the protrusion 42 has a circular arc shape substantially concentric with the through hole 40. Further, a rectangular lead hole 46 is formed in the vicinity of the top of the protruding portion 4b. The lead hole 46 is a hole through which the lead wire 2g drawn from the first loop element 2c and the second loop element 2d of the antenna unit 2 is led out. Furthermore, three engagement pieces 45 are formed on both sides of the lower side of the opened back of the main body 4a so as to face both sides. When the support panel 4 is attached to the antenna portion 2, the engagement pieces 45 are respectively engaged with the engagement grooves 20 formed on the opposing vertical edges of the notch portion 2 b of the antenna portion 2. Become. Furthermore, mounting holes 4c through which screws are respectively inserted are formed at substantially the center of the upper portion of the main body 4a and on both sides slightly below the center. The heads of the screws inserted through these mounting holes 4c are housed in the recesses in which the mounting holes 4c are provided on the bottom surface. Then, the screw inserted through the mounting hole 4 c is screwed to the mounting boss 3 c of the front panel 3 that is mounted to face the support panel 4, thereby fixing the front panel 3 and the support panel 4 to the antenna unit 2. It becomes like this.
Note that the front panel 3 and the support panel 4 may be provided integrally with the antenna unit 2. In this case, the protruding portion 4b is formed so as to protrude from the back side of the antenna portion 2.

  By the way, as shown in FIG. 7, the base part 5 is formed by fitting the first base part 5a and the second base part 5b, which are substantially half-finished from the base part 5. A detailed configuration of the first base portion 5a is shown in FIGS. 39 is a left side view showing the configuration of the first base 5a, FIG. 40 is a top view showing the configuration of the first base 5a, and FIG. 41 is a right side view showing the configuration of the first base 5a. 42 is a bottom view showing the configuration of the first base 5a, FIG. 43 (a) is a front view showing the configuration of the first base 5a, and FIG. 43 (b) shows the configuration of the first base 5a as D- FIG. 44 is a left side view showing an enlarged configuration of the first clamping portion 51a of the first base portion 5a.

  As shown in these drawings, the main body portion 50a constituting the first base portion 5a is resin-molded in a generally elongated rectangular parallelepiped shape, and the left side surface is opened. The front side and the back side of the main body 50a have a rounded outer shape. From the upper surface of the main body portion 50a of the first base portion 5a, a triangular first sandwiching portion 51a is formed so as to protrude upward. The triangular apex of the first clamping part 51a is rounded, and a cylindrical shaft part 53a is formed so as to extend in the lateral direction. As shown in an enlarged view in FIG. 44, a ring-shaped portion 52d substantially concentric with the cylindrical shaft portion 53a is formed on the left side surface of the first sandwiching portion 51a so as to surround the shaft portion 53a. Engagement protrusions 52a projecting outward from a predetermined position of the ring-shaped portion 52d are opposed to each other and formed integrally with the ring-shaped portion 52d. The outer peripheral surface of the engagement protrusion 52a has a circular arc shape substantially concentric with the shaft portion 53a. A central portion of the cylindrical shaft portion 53a is a screw hole 58a, and a hole portion 56a connected to the shaft portion 53a is provided on the right side surface. The shaft portion 53 a is a shaft portion 53 a that is inserted into the through hole 40 formed in the protruding portion 4 b of the support panel 4, and the antenna portion 2 is connected to the base portion 5 by the shaft portion 53 a being inserted into the through hole 40. On the other hand, the antenna unit 2 can be tilted by being tiltably supported. Further, when the antenna portion 2 is tilted, the protrusion 42 formed on the protrusion 4b comes into engagement with the engagement protrusion 52a formed on the first clamping portion 51a. The antenna unit 2 can no longer be tilted and is restricted to the angle.

  Further, engaging portions 54a are respectively formed on the front side and the back side of the opened left side of the main body 50a, and slightly on the front side and slightly on the back side. The engaging portion 54a is formed to be extended so as to protrude in the lateral direction, and its tip end portion is formed in a hook shape. The engaging portion 54a engages with the engaging piece 54b formed on the second base portion 5b when the first base portion 5a is fitted to the second base portion 5b. Furthermore, bosses 59a extending downward are formed in the main body 50a before and after the upper surface. A screw inserted through the base 6 is screwed to the boss 59a, and the first base 5a is fixed to the base 6 by screwing the screw to the boss 59a. Furthermore, a switch attachment hole 55a for attaching a switch is formed on the right side surface of the main body 50a, and the switch knob 8 faces the switch attachment hole 55a when the switch is attached.

Next, a detailed configuration of the second base portion 5b is shown in FIGS. 45 is a right side view showing the configuration of the second base portion 5b, FIG. 46 is a top view showing the configuration of the second base portion 5b, and FIG. 47 is a left side view showing the configuration of the second base portion 5b. 48 is a bottom view showing the configuration of the second base portion 5b, FIG. 49 (a) is a front view showing the configuration of the second base portion 5b, and FIG. 49 (b) shows the configuration of the second base portion 5b as E−. FIG. 50 is a left side view showing an enlarged configuration of the second clamping portion 51b of the second base portion 5b.
As shown in these drawings, the main body portion 50b constituting the second base portion 5b is resin-molded in a generally elongated rectangular parallelepiped shape, and the right side surface is opened. The front side and the back side of the main body 50b have a rounded outer shape. From the upper surface of the main body portion 50b of the second base portion 5b, a triangular second sandwiching portion 51b having a shape symmetrical to the first sandwiching portion 51a is formed so as to protrude upward. The triangular apex of the second clamping part 51b is rounded, and an insertion hole 53b is formed inside thereof.

  On the right side surface of the second sandwiching portion 51b, as shown in an enlarged view in FIG. 50, a ring-shaped portion 52e is formed on almost the entire second sandwiching portion 51b with the insertion hole 53b as the center. A pair of four first recesses 52b are formed on the inner peripheral surface of the ring-shaped portion 52e at positions spaced apart by about 90 °, and a pair of second recesses 52c are formed between the two first recesses 52b. Has been. The first recess 52b has a substantially rectangular shape, and the second recess 52c has a valley shape with a recessed center. In the first recess 52b and the second recess 52c, a substantially rectangular shape formed on a ring-shaped spacer 70 described later attached to two sets of sandwiching pieces 44 formed on the protrusion 4b of the support panel 4 is provided. The protrusion 73 is fitted or slid. In this case, when the antenna unit 2 is tilted and the protrusion 73 is fitted into the first recess 52b, the antenna unit 2 is stably supported at that position. Further, when the projection 73 slides in the second recess 52c, the tilt holding force for rotating the antenna unit 2 gradually decreases toward the center, and the antenna unit 2 is not held near the center. The tilt holding force increases as it goes beyond the center toward the end, and the protrusion 73 is fitted into the first recess 52b. Further, a recess having an insertion hole 53b formed in the bottom surface is formed on the left side surface of the main body 50b, and the head of the screw is accommodated in the recess when the screw is inserted into the insertion hole 53b. . The screw inserted through the insertion hole 53b is screwed into the screw hole 58a of the shaft portion 53a of the first base portion 5a.

  Further, engaging pieces 54b are formed on the front side and the back side of the opened right side of the main body 50b and slightly on the front side and slightly on the back side, respectively. When the first base portion 5a is fitted to the second base portion 5b, the engaging portion 54a formed on the first base portion 5a is engaged with the engaging piece 54b. Furthermore, bosses 59b extending downward are formed in front and rear of the upper surface inside the main body 50b. A screw inserted through the base 6 is screwed to the boss 59b, and the second base 5b is fixed to the base 6 by screwing the screw to the boss 59b. In addition, an elongated rectangular kerf 55c is formed substantially at the center of the upper portion of the right side surface of the main body 50b. In addition, a kerf 55b having the same shape is formed in the upper center of the left side surface of the main body 50a of the first base 5a, and the same shape of the cut groove 55b is formed when the first base 5a and the second base 5b are fitted. The kerf 55b and the kerf 55c face each other to form a rectangular hole. This hole is a hole for introducing the lead wire 2 g led out from the antenna portion 2 into the base portion 5.

Next, the detailed structure of the base 6 is shown in FIGS. 51 is a front view showing the configuration of the base 6, FIG. 52 is a top view showing the configuration of the base 6, FIG. 53 is a left side view showing the configuration of the base 6, and FIG. It is a bottom view which shows the structure of the base 6, FIG. 55 is a rear view shown with sectional drawing which cut | disconnected the structure of the 2nd base 5b by the FF line.
As shown in these drawings, the base 6 is composed of a main body 60 formed in a disk shape by resin molding, and the lower surface of the main body 60 is opened. On the upper surface of the main body portion 60, a flat plate portion 61 having a slightly long thickness is formed in the back, the rear portion being semicircular and the front portion being tapered. A pair of convex portions 62 are formed in the front side and the rear side of the flat plate portion 61 side by side, and an insertion hole 63 is formed substantially at the center of the convex portions 62. A hooking hole 64 is formed between the convex portions 62 on the rear side. The hooking hole 64 has a shape in which a part of a circular hole is extended outward, and is a hole that is hooked on a hook provided on a vertical wall or the like. Further, four recesses 65 are formed slightly inside the outer peripheral edge on the lower surface of the main body 60, and a circular cushion for preventing slipping is attached to these recesses 65. Screws are respectively inserted from the lower surface into the four insertion holes 63 formed in total, and a boss 59a extending to the lower surface of the base portion 5 formed by fitting the first base portion 5a and the second base portion 5b. And is screwed to the boss 59b. Thereby, the base part 5 comes to adhere to the base 6.

Next, the detailed structure of the spacer 70 is shown in FIGS. 56 is a plan view showing the configuration of the spacer 70, and FIG. 57 is a side view showing the configuration of the spacer 70.
As shown in these drawings, the main body 71 constituting the spacer 70 is formed in a ring shape by molding a relatively flexible resin such as nylon. The main body 71 is formed in a circular ring shape having a predetermined width, and the outer peripheral surface is formed with protrusions 73 at opposing positions, and is positioned so as to protrude inward from the inner peripheral surface. A portion 72 is formed. The pair of positioning portions 72 and the pair of protrusions 73 are formed to be separated from each other by about 90 degrees, the cross-sectional shape of the protrusions 73 is formed in a substantially trapezoidal shape, and the cross-sectional shape of the positioning portion 72 is formed in an elongated mountain shape. ing. The spacer 70 is accommodated in a recess 43b in a ring-shaped protrusion 41b formed on the right side surface of the protrusion 4b of the support panel 4. When the spacer 70 is accommodated, the positioning portion 72 is sandwiched between the pair of sandwiching pieces 44. As a result, the spacer 70 is integrated with the protrusion 4b so that the position of the protrusion 73 becomes a predetermined position.

Next, an outline of assembly of the antenna device 1 according to the present invention in which each part is configured as described above will be described.
First, the first loop element 2c and the second loop element 2d are stored in the grooves of the first storage groove 21 and the second storage groove 22 in the antenna unit 2, and the grooves of the third storage groove 23 and the fourth storage groove 24 are stored. The first parasitic element 2e and the second parasitic element 2f are housed therein to constitute the antenna unit 2 shown in FIG. By fitting the front panel 3 into the notch 2b of the antenna part 2 from the front side, the pair of engaging pieces 3b of the front panel 3 are engaged with the edges on both sides of the notch 2b. Next, the support panel 4 is fitted into the cutout portion 2b of the antenna portion 2 from the back side, thereby engaging the three pairs of engagement pieces 45 of the support panel 4 with the engagement grooves 20 on both sides of the cutout portion 2b. . Then, screws are inserted into the three attachment holes 4 c from the back side of the support panel 4, and screws are respectively screwed into the three attachment bosses 3 c of the front panel 3. Thereby, the front panel 3 and the support panel 4 are fixed to and integrated with the antenna unit 2 so as to sandwich the antenna unit 2. The lead wire 2g drawn from the antenna portion 2 is drawn out from a lead hole 46 formed near the top of the protruding portion 4b of the support panel 4.

  Next, the spacer 70 is attached to the right side surface of the protrusion 4 b of the support panel 4. At this time, the positioning portion 72 of the spacer 70 is sandwiched between a pair of sandwiching pieces 44 formed on the right side surface of the projecting portion 4b, and the spacer 70 is integrated with the projecting portion 4b. Thus, the 1st base 5a is attached to the antenna part 2 with which the front panel 3 and the support panel 4 were integrated. When attaching, the shaft portion 53a of the first base portion 5a is inserted into the through hole 40 of the protruding portion 4b of the support panel 4. Next, the second base portion 5b is attached to the antenna portion 2 in which the front panel 3 and the support panel 4 are integrated so that the opening surface of the first base portion 5a and the opening surface of the second base portion 5b face each other. When attached, the four engaging portions 54a of the first base portion 5a are engaged with the engaging pieces 54b of the second base portion 5b, respectively. Furthermore, the front end surface of the shaft portion 53a of the first base portion 5a protruding from the through hole 40 of the protrusion portion 4b of the support panel 4 is formed in the insertion hole 53b formed in the second clamping portion 51b of the second base portion 5b of the spacer 70. Abut against the periphery. Therefore, a screw is inserted into the insertion hole 53b formed in the second clamping portion 51b of the second base portion 5b, and is screwed into the screw hole 58a formed at substantially the center of the shaft portion 53a of the first base portion 5a.

  Thus, the first base portion 5a and the second base portion 5b are integrated, and the front panel 3 and the support panel 4 are integrated with the integrated first base portion 5a and second base portion 5b. Is supported in a tiltable manner. The spacer 70 is sandwiched between the right side surface of the protruding portion 4b of the support panel 4 and the second clamping portion 51b of the second base portion 5b (see FIG. 7). Further, the lead wire 2g drawn out from the antenna portion 2 in which the front panel 3 and the support panel 4 are integrated is integrated with the first base portion 5a and the second base portion 5b which are integrated from a hole formed by the cut groove 55b and the cut groove 55c. Drawn into the inside. Next, the drawn lead wire 2g is connected to the power feeding portion of the antenna substrate 9, and the antenna substrate 9 is accommodated in the integrated first base portion 5a and second base portion 5b. And the screw | thread penetrated to the antenna board | substrate 9 is screwed by the boss | hub currently formed in the diagonal of the integrated 1st base part 5a and the 2nd base part 5b, and the 1st base part which integrated the antenna board | substrate 9 It adheres in 5a and the 2nd base 5b. A cable 7 led to the receiver is drawn out from the antenna board 9 (see FIG. 8). FIG. 22 shows a state in which the antenna unit 2 in which the front panel 3 and the support panel 4 are integrated in this manner is tiltably attached to the first base 5a and the second base 5b.

  Next, the base 6 is brought into contact with the lower surfaces of the integrated first base portion 5a and second base portion 5b, and screws are inserted into the four insertion holes 63 of the base 6 from the lower surface so that the boss 59a of the first base portion 5a. And screwed to the boss 59b of the second base portion 5b. A circular cushion material such as rubber is stuck in the four recesses 65 of the base 6. Thereby, the antenna device 1 according to the present invention is assembled. Next, the tilting operation of the antenna unit 2 in the antenna device 1 assembled in this way will be described.

  The antenna device 1 shown in FIG. 3 is a right side view of the state in which the antenna unit 2 is most upright with respect to the base 5, and is in a state of being placed directly on a television or a table. FIG. 11 is a right side view showing the configuration of the rotating portion in this case in a cross-sectional view, FIG. 15 is a left side view, and FIG. 12 and FIG. 16 are enlarged views showing only the configuration of the rotating portion. . As shown in these drawings, in a state where the antenna portion 2 is most upright with respect to the base portion 5, the left ends of the pair of protrusions 42 formed on the ring-shaped protrusion 41a of the protrusion 4b of the support panel 4 are The antenna portion 2 cannot be tilted by more than this angle by engaging with the right end of the engagement protrusion 52a formed on the ring-shaped portion 52d of the first clamping portion 51a of the first base portion 5a. In the state where the antenna portion 2 is most upright with respect to the base portion 5, as shown in FIGS. 15 and 16, as shown in FIGS. 15 and 16, the positioning portion 72 is clamped and fixed to the clamping piece 44 of the support panel 4. The protrusion 73 is fitted into the first recess 52b positioned above and below the first recess 52b formed in the second clamping portion 51b of the second base. Thereby, the antenna part 2 comes to be stably supported by the base part 5 in this standing state.

  Next, the antenna device 1 shown in FIG. 9 is a right side view of an intermediate state in which the antenna unit 2 is tilted halfway with respect to the base 5, and the configuration of the part of the rotating unit in this case is shown in a sectional view. FIG. 17 is a left side view, and FIG. 18 is an enlarged view of only the configuration of the rotating portion. As shown in these drawings, when the antenna portion 2 is tilted halfway with respect to the base portion 5, the protruding portion of the spacer 70 in which the positioning portion 72 is held and fixed to the holding piece 44 of the support panel 4. 73 slides in the valley-shaped second recess 52c formed in the second clamping portion 51b of the second base. In this way, when the antenna portion 2 is tilted and the protrusion 73 slides in the second recess 52c, the tilt holding force that rotates the antenna portion 2 is directed toward the center of the second recess 52c. The antenna portion 2 is gradually decreased and the antenna portion 2 is not held in the vicinity of the center portion, and the tilt holding force increases as it goes to the end of the second recess 52c beyond the center. And since the 1st recessed part 52b is provided in the both sides of the 2nd recessed part 52c, the protrusion 73 comes to fit in the 1st recessed part 52b after the tilt holding force becomes large. Thereby, in the intermediate state in which the antenna unit 2 is tilted, the antenna unit 2 can be tilted to a stable state without pinching a finger or the like.

  Next, the antenna device 1 shown in FIG. 10 is a right side view of the state in which the antenna unit 2 is most tilted with respect to the base 5, and is used in a state where it is attached to a vertical wall or used. It is in a state. FIG. 13 is a right side view showing the configuration of the rotating portion in this case in a sectional view, FIG. 19 is a left side view, and FIG. 14 and FIG. 20 show only the configuration of the rotating portion. . As shown in these drawings, in the state where the antenna part 2 is most inclined with respect to the base part 5, the right ends of the pair of protrusions 42 formed on the ring-shaped protrusion 41a of the protrusion part 4b of the support panel 4 are The antenna unit 2 cannot be tilted beyond this angle by colliding with the left end of the engagement protrusion 52a formed on the ring-shaped portion 52d of the first clamping portion 51a of the first base portion 5a. Further, in the state where the antenna unit 2 is most tilted with respect to the base 5, as shown in FIGS. 19 and 20, the protrusion of the spacer 70 in which the positioning unit 72 is clamped and fixed to the clamping piece 44 of the support panel 4. The portion 73 is fitted into the first recess 52b located on the left and right of the first recess 52b formed in the second clamping portion 51b of the second base. Thereby, the antenna part 2 comes to be stably supported by the base part 5 in this fall state.

  The intermediate state in which the protrusion 73 of the spacer 70 slides in the second recess 52c is a tilting range in which the antenna unit 2 of the antenna device 1 is not used. Since 73 does not fit into the first recess 52b, there is no click feeling. Further, in the intermediate state, the tilt holding force is lowered so that the intermediate position cannot be stopped. Further, when the antenna portion 2 is raised most and the protrusion 73 of the spacer 70 is fitted into the first concave portion 52b positioned above and below, a click feeling is obtained, and the antenna portion 2 is most tilted to protrude the protrusion of the spacer 70. A click feeling can be obtained when 73 is fitted in the first recess 52b located on the left and right.

Although the antenna device according to the present invention is an antenna device for terrestrial digital broadcasting, the present invention is not limited to this, and can be applied to an indoor antenna device whose use frequency band is wide.
In the antenna device according to the present invention described above, the front panel and the support panel may be formed integrally with the antenna unit, and the antenna unit may have a projecting part provided with a through hole at the lower part. Further, the spacer 70 may be omitted by forming the protrusion 73 of the spacer 70 at a predetermined position of the recess 43b of the protrusion 4b.

It is a front view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a rear view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a right view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a left view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a bottom view which shows the structure of the antenna apparatus concerning the Example of this invention. It is a top view shown with sectional drawing which shows the structure of the antenna apparatus concerning the Example of this invention. It is a left view shown with sectional drawing which shows the structure of the antenna apparatus concerning the Example of this invention. In the antenna device according to the embodiment of the present invention, it is a diagram showing a configuration in an intermediate state in which the antenna unit is tilted with respect to the base. In the antenna device according to the embodiment of the present invention, it is a perspective view showing a configuration in a state where the antenna portion is most tilted with respect to the base portion. In the antenna apparatus concerning the Example of this invention, it is a right view which shows a part of structure of the state which raised the antenna part most with respect to the base part with sectional drawing. In the antenna apparatus concerning the Example of this invention, it is a right view shown with sectional drawing which expanded a part of structure of the state which raised the antenna part most with respect to the base. In the antenna apparatus concerning the Example of this invention, it is a right view which shows a part of structure of the state which tilted the antenna part most with respect to the base part with sectional drawing. In the antenna apparatus concerning the Example of this invention, it is a right view which expands and shows a part of structure of the state in which the antenna part was most tilted with respect to the base. In the antenna apparatus concerning the Example of this invention, it is a left view which shows a part of structure of the state which raised the antenna part most with respect to the base part with sectional drawing. In the antenna apparatus concerning the Example of this invention, it is a left view shown by the expanded sectional view of a part of structure of the state which raised the antenna part most with respect to the base. In the antenna apparatus concerning the Example of this invention, it is a left view which shows a part of structure of the intermediate state which tilted the antenna part with respect to the base part with sectional drawing. In the antenna apparatus concerning the Example of this invention, it is a left view shown by the expanded sectional view of a part of structure of the intermediate state which tilted the antenna part with respect to the base. In the antenna apparatus concerning the Example of this invention, it is a left view which shows a part of structure of the state which tilted the antenna part most with respect to the base part with sectional drawing. In the antenna apparatus concerning the Example of this invention, it is a left view which expands and shows a part of structure of the state in which the antenna part was most tilted with respect to the base in sectional drawing. It is a rear view which shows the structure which provided the antenna element in the antenna part in the antenna device concerning the Example of this invention. In the antenna apparatus concerning the Example of this invention, it is a figure which shows the structure in the middle of an assembly. It is a front view which shows the structure of the antenna part in the antenna apparatus concerning the Example of this invention. It is a rear view which shows the structure of the antenna part in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the antenna part in the antenna apparatus concerning the Example of this invention. It is the side view which shows the structure of the antenna part in the antenna apparatus concerning the Example of this invention, and a side view shown with sectional drawing. It is a front view which shows the structure of the front panel in the antenna apparatus concerning the Example of this invention. It is a rear view which shows the structure of the front panel in the antenna apparatus concerning the Example of this invention. It is a side view which shows the structure of the front panel in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the front panel in the antenna apparatus concerning the Example of this invention. It is a bottom view which shows the structure of the front panel in the antenna apparatus concerning the Example of this invention. It is a front view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention. It is a rear view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention. It is a right view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention. It is the left view and right view which expand and show a part of structure of the support panel in the antenna apparatus concerning the Example of this invention. It is a side view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention with sectional drawing. It is a bottom view which shows the structure of the support panel in the antenna apparatus concerning the Example of this invention with sectional drawing. It is a left view which shows the structure of the 1st base part in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the 1st base part in the antenna apparatus concerning the Example of this invention. It is a right view which shows the structure of the 1st base in the antenna apparatus concerning the Example of this invention. It is a bottom view which shows the structure of the 1st base part in the antenna apparatus concerning the Example of this invention. It is the front view shown with the front view and sectional drawing which show the structure of the 1st base part in the antenna apparatus concerning the Example of this invention. It is a left view which expands and shows a part of structure of the 1st base part in the antenna apparatus concerning the Example of this invention. It is a right view which shows the structure of the 2nd base part in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the 2nd base part in the antenna apparatus concerning the Example of this invention. It is a left view which shows the structure of the 2nd base part in the antenna apparatus concerning the Example of this invention. It is a bottom view which shows the structure of the 2nd base part in the antenna apparatus concerning the Example of this invention. It is the front view shown with the front view and sectional drawing which show the structure of the 2nd base in the antenna apparatus concerning the Example of this invention. It is a right view which shows the structure of the 2nd clamping part of the 2nd base part in the antenna apparatus concerning the Example of this invention. It is a front view which shows the structure of the base in the antenna apparatus concerning the Example of this invention. It is a top view which shows the structure of the base in the antenna apparatus concerning the Example of this invention. It is a left view which shows the structure of the base in the antenna apparatus concerning the Example of this invention. It is a bottom view which shows the structure of the base in the antenna apparatus concerning the Example of this invention. It is a rear view which shows the structure of the base in the antenna apparatus concerning the Example of this invention. It is a front view which shows the structure of the spacer in the antenna apparatus concerning the Example of this invention. It is a side view which shows the structure of the spacer in the antenna apparatus concerning the Example of this invention. It is a figure which shows a part of structure of an example of the conventional indoor antenna. It is a figure which shows a part of structure of a different state of an example of the conventional indoor antenna. It is a figure which shows a part of structure of a further different state of an example of the conventional indoor antenna.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna apparatus, 2 Antenna part, 2a Main body part, 2b Notch part, 2c 1st loop element, 2d 2nd loop element, 2e 1st parasitic element, 2f 2nd parasitic element, 2g Lead line, 3 Front panel, 3a body part, 3b engagement piece, 3c mounting boss, 4 support panel, 4a body part, 4b protrusion, 4c mounting hole, 5 base part, 5a first base part, 5b second base part, 6 base base, 7 cable, 8 Switch knob, 9 Antenna substrate, 9a Weight plate, 20 Engagement groove, 21 First storage groove, 22 Second storage groove, 23 Third storage groove, 24 Fourth storage groove, 40 Through hole, 41a Ring-shaped protrusion, 41b Ring-shaped protrusion, 42 protrusion, 43a recess, 43b recess, 44 clamping piece, 45 engagement piece, 46 lead-out hole, 50a body part, 50b body part, 51a first clamping part, 51b 2 clamping part, 52a engaging protrusion, 52b first recessed part, 52c second recessed part, 52d ring shaped part, 52e ring shaped part, 53a shaft part, 53b insertion hole, 54a engaging part, 54b engaging piece, 55a switch mounting Hole, 55b groove, 55c groove, 56a hole, 58a screw hole, 59a boss, 59b boss, 60 main body, 61 flat plate part, 62 convex part, 63 insertion hole, 64 hook hole, 65 concave part, 70 spacer, 71 Body part 72 Positioning part 73 Projection part 100 Antenna 101 Antenna part 101a Recessed part 102 Case 102a Engagement piece 102b Shaft part

Claims (8)

An antenna device comprising a substantially flat antenna portion provided with an antenna element, and a base portion that pivotally supports the antenna portion,
The antenna portion has a protruding portion provided with a through hole at a lower portion, and a first protruding portion that regulates a tilt angle of the antenna portion is substantially around the through hole on one surface of the protruding portion. It is formed concentrically, and a second protrusion is formed at a predetermined position around the through hole on the other surface of the protrusion,
The base portion has a shaft portion that penetrates the through-hole and pivotally supports the antenna portion, and the first protrusion is engaged around one end of the shaft portion. A plurality of first recesses in which engagement protrusions for regulating the tilt angle of the antenna portion are formed substantially concentrically with the shaft portion, and the second protrusion is fitted around the other end of the shaft portion. And the second recess in which the second protrusion is slid is formed substantially concentrically with the shaft portion,
When the antenna portion is tilted with respect to the base portion, the second protrusion protrudes from the first recess and rotates, and the tilt is maintained by sliding the second protrusion in the second recess. When the force is adjusted and further tilted, the second protrusion fits into the next first recess, and the first protrusion engages with the engaging protrusion and tilts the antenna section. An antenna device characterized in that the angle is regulated.   When the second recess is a valley-shaped recess and the second protrusion slides in the second recess, the tilt holding force gradually decreases toward the center, and from the center. 2. The antenna device according to claim 1, wherein the tilt holding force gradually increases toward the end portion.   Fixing means for fixing a ring-shaped spacer is formed around the through hole on the other surface of the protrusion, and the second protrusion fitted in the first recess is formed on the outer peripheral surface of the spacer. The antenna device according to claim 1, wherein the antenna device is formed.   The fixing means formed on the other surface of the protruding portion is a holding piece for holding a positioning portion formed so as to protrude inward from the inner peripheral surface of the spacer. The antenna device described.   The base portion is formed by fitting a first base portion and a second base portion semi-curved at a substantially center, the shaft portion and the engaging protrusion are formed on the first base portion, The antenna device according to claim 1, wherein the second protrusion is formed on two bases.   The said antenna part is comprised by the main body part and the panel fixed to this main body part, The said protrusion part in which the said through-hole is formed is formed in the said panel. The antenna device described.   A first loop element and a second loop element smaller than the first loop element are fixed to one surface of the flat antenna portion along the edge, and the first loop element and the second loop element are fixed. The antenna device according to claim 1, wherein a parasitic element is disposed in the vicinity of the feeding portion.   2. The antenna device according to claim 1, wherein a base that can stand and hold the antenna portion pivotally supported by the base is fixed to a lower portion of the base.

Images