JPS6340886Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antenna mounting device for rotatably and detachably mounting an antenna base on which an antenna body is mounted to a member to be mounted, such as a cabinet of a television or radio set.

An example of a conventional antenna mounting device as described above will be explained with reference to FIG. This antenna mounting device is used to mount an antenna device 1 to a cabinet 2 of a television or radio set. That is, in the antenna device 1, the base of the antenna body 3 is attached to an antenna base 4 made of integrally molded synthetic resin, and the antenna body 3 protrudes upwardly from the base 4 and is rotatable in the vertical direction. A columnar shaft portion 5 is integrally formed below the base 4, a locking portion 6 is formed at the tip of the shaft portion 5 via a small diameter portion 7, and a slit 8 is formed along the axial direction of the shaft portion 5. This allows the locking portion 6 to elastically contract in diameter. The cabinet 2 is made of a synthetic resin molded product, and has a lower end surface of a side wall 11 of a mounting hole 10 that opens on the top surface of the antenna mounting base 9, and a bottom 1 of a notch that opens on one side of the cabinet 2.
A gap is formed between the two. Then, the columnar shaft portion 5 is fitted into the mounting hole 10 by reducing the diameter of the locking portion 6 against the elastic force, and the locking portion 6 whose diameter has been restored by protruding from the lower end of the mounting hole 10 is inserted into the mounting hole 10. The antenna device 1 is secured to the lower end surface of the side wall 11 of the antenna device 1, and the upper end peripheral portion 14 of the mounting hole 10 is held between the locking portion 6 and the step 13 at the base end of the columnar shaft portion 5 of the antenna base 4. Install it on cabinet 2. In addition, the antenna device 1 is used by rotating the antenna base 4 around the axis of the columnar shaft portion 5 so that the antenna body 3 faces a predetermined direction, and when not needed, the columnar shaft portion 5 of the antenna base 2 is attached. It is designed to be removed by pulling it out from the hole 10. Note that the rotation stopper 15 protruding from the step 13 of the antenna base 4 is connected to the upper end peripheral portion 14 of the mounting hole 10.
It comes into contact with a stopper 16 provided above to restrict rotation of the antenna base 4 over 360 degrees.

However, with this antenna mounting device, it is difficult to optimize the rotational friction force between the columnar shaft and the side wall of the mounting hole due to dimensional errors and unevenness of the antenna base, the side wall of the mounting hole of the cabinet, etc., and it is difficult to use repeatedly. As a result, the contact portion between the columnar shaft portion and the side wall of the mounting hole wears out, but the cabinet is large in size and cannot be replaced even if it wears out. Therefore, it is possible to use molded products made of high-grade synthetic resin to reduce dimensional errors and wear, but in this case, not only would the material cost be high, but the shape of the mounting base of the cabinet would be complicated and difficult to mold. Therefore, there was a problem that the molding cost was relatively high.

The present invention attempts to solve the above-mentioned problem by interposing a bearing sleeve between the side wall of the mounting hole of a large mounted member such as a cabinet and the columnar shaft of the antenna base. , the rotational friction force is appropriate, and the friction of the contact part can be dealt with, and the shape of the area around the mounting hole of the cabinet can be easily changed by making the mounting hole bottomed using a bearing sleeve. It is an object of the present invention to provide an antenna mounting device that is inexpensive and has a good appearance.

In order to achieve this purpose, the antenna mounting device of the present invention press-fits a bearing cylinder into a bottomed mounting hole formed in a mounting member made of a molded synthetic resin, and the outer periphery formed in the bearing cylinder. A projecting piece protruding from the mounting hole is removably engaged with a window hole formed in the side wall of the mounting hole of the mounting member to restrain the axial movement of the bearing sleeve, and the columnar shaft portion of the antenna base on which the antenna body is mounted is fixed. is rotatably fitted into the bearing sleeve, the base side of the columnar shaft portion is resiliently supported by a holding piece for rotational friction formed on the bearing sleeve, and a holding piece for locking provided on the bearing sleeve elastically supports the base side of the columnar shaft portion. It is characterized in that the axial movement of the columnar shaft is restrained by engaging a small-diameter engagement member provided on the tip side of the columnar shaft.

Below, Figures 2 to 5 will be explained for one embodiment of the present invention.
This will be explained with reference to the figures.

In FIGS. 2 and 3, reference numeral 21 is an antenna device, 22 is a cabinet of a television or radio set which is an attached member, and 23 is a bearing sleeve. The antenna device 21 has a small-diameter engagement portion 25 formed at the tip side of a columnar shaft portion 24, and a shaft end portion 26 with a somewhat larger diameter formed at the tip side of the small-diameter engagement portion 25.
The only difference from the prior art shown in FIG. 1 described above is that these portions are not provided with slits. Therefore, corresponding parts are designated by the same reference numerals as in Fig. 1 in Fig. 2.
3 and 3, and the explanation thereof will be omitted. The cabinet 22 is made of a synthetic resin molded product, and a bottom 30 is formed integrally with the side wall 29 of the mounting hole 28 that opens on the top surface of the antenna mount 27, and the bottom 30 extends on the same plane. A window hole 32 is formed in the side wall 29 on the side of the cutout 31,
The mounting hole 28 is formed with a slight taper having a smaller diameter on the lower end side, and a rotation stopper groove 33 is formed in a part of the opening end of the side wall 29 in the circumferential direction.

As shown in FIGS. 2 to 5, the bearing sleeve 23 is made of a synthetic resin integrally molded product, and has a flange 34 protruding from the outer periphery of its upper end, and a portion of the lower part of the flange 34 in the circumferential direction. A stop 35 is provided protrudingly provided, and three upper and lower circumferential separation portions 36, 37, 3 are provided at the intermediate portion.
8 is formed, and the rotational friction holding piece 41 and the locking holding piece 4 are separated by the axial separation parts 39 and 40.
2 is formed, and a protruding piece 43 is formed below the flange 34, and this protruding piece 43 has 3 parts excluding the lower side.
The sides are separated and an inclination is provided such that the upper side projects toward the outer periphery of the bearing cylinder 23. Note that the circumferential separation portion 3
6, 37, and 38 are formed into halves of 180 degrees, and the holding piece 4 for locking is smaller than the holding piece 41 for rotational friction.
2 is formed to have a somewhat smaller diameter.

Then, the bearing tube 23 is lightly press-fitted into the mounting hole 28 of the cabinet 22 from above for a taper fit.
And the rotation stopper 35 of the bearing tube 23 is connected to the cabinet 2.
The bearing sleeve 23 is stopped from rotating by being engaged with the rotation stopper groove 33 of No. 2, and the protruding piece 43 of the bearing sleeve 23 is engaged with the upper wall of the window hole 32 of the cabinet 22 to prevent the bearing sleeve 23 from coming off. The bearing sleeve 23 is in pressure contact with the side wall 29 of the mounting hole 28 at the upper and lower portions of its outer circumferential surface having a taper corresponding to the taper of the mounting hole 28, and the intermediate portion having the holding pieces 41, 42 and the side wall 29 are in contact with each other. A gap is formed between them. Next, the columnar shaft portion 24 provided on the antenna base 4 of the antenna device 21 is press-fitted into the bearing tube 23 from above, and the portion where the holding piece 41 for rotational friction is provided is connected to the base side of the columnar shaft portion 24. At the same time, the locking holding piece 42 is engaged with the small-diameter engagement portion 25 provided on the tip side of the columnar shaft portion 24 to prevent the columnar shaft portion 24 from coming off. Stage 1 of platform 4
3 and the upper end stage of the shaft end 26 of the columnar shaft 24 sandwich the flange 34 of the bearing sleeve 23 and the locking holding piece 42 to restrain the columnar shaft 24 from moving in the axial direction. The columnar shaft portion 24 is such that the step at the upper end of the small-diameter engagement portion 25 is brought into contact with the step at the upper end of the portion of the bearing sleeve 23 where the locking holding piece 42 is provided, and the columnar shaft portion 24 is held by an appropriate means (not shown). 24 is restricted from rotating more than 360° with respect to the bearing tube 23, and the base end of the columnar shaft portion 24 and the mounting hole 28
A slight gap is formed between the side wall 29 and the side wall 29.

The antenna mounting device of this embodiment includes the mounting hole 28 of the cabinet 22, the side wall 29, and the antenna device 2.
Since the bearing tube 23 is interposed between the columnar shaft section 24 of the first columnar shaft section 1 and the antenna device 21 is rotated by using the bearing tube 23 and the columnar shaft section 24 as a contact part,
Even if the bearing tube 23 is small and made of a high-quality material and the cabinet side is made of a low-cost material, it is cheaper than the case where the entire cabinet is made of a high-grade material. 30, the shape of the mounting base 27 of the cabinet 22 can be simplified, and therefore the mounting base 27 of the cabinet 22 can be
2 can be made inexpensive. Furthermore, although it is difficult to make the entire cabinet 22 highly accurate, it is relatively easy to make the bearing sleeve 23 highly accurate, and the rotational friction holding piece 41 of the bearing sleeve 23 is used to hold the antenna device 21. Since there is some margin in the radial direction between the holding piece 41 for rotational friction and the side wall 29 of the mounting hole 28, there is no influence on the cabinet 22. The rotational friction force between the bearing sleeve 23 and the columnar shaft portion 24 can be made appropriate without causing
Moreover, these stable contacts can be obtained over a long period of time, and the antenna device 21 can be rotated smoothly.
Furthermore, the bearing sleeve 23 cannot be pulled out unless the protruding piece 43 of the bearing sleeve 23 is pushed toward the center through the notch 31 of the cabinet 22 to disengage it from the upper wall of the window hole 32. As described above, by disengaging the protruding piece 43 from the upper wall of the window hole 32, holding the antenna base 4 and pulling it upward, the antenna device 21 can be pulled out together with the bearing sleeve 23, and the cabinet 22 can be pulled out. By removing the columnar shaft portion 24 and the bearing sleeve 23 outside, it is possible to replace the bearing sleeve 23 if it becomes worn out due to long-term use. Even in this removed state, the bottom 30 remains in the mounting hole 28. Because of this, unlike the case where the mounting hole is a through hole, it not only looks good but also prevents dust from entering the cabinet 22.

In addition, in the present invention, due to the engagement of the protruding piece of the bearing sleeve with the window hole of the mounted member such as the cabinet,
The bearing sleeve may be stopped from rotating.

As explained above, in the antenna mounting device of the present invention, a bearing sleeve is press-fitted into a bottomed mounting hole formed in a mounting member made of a synthetic resin molded product, and a part of the antenna mounting device protrudes from the outer periphery formed in the bearing sleeve. Since the projecting piece is removably engaged with the window hole formed in the peripheral wall of the mounting hole of the mounted member, the bearing sleeve can be reliably prevented from coming off during use, and the columnar shape of the antenna base can be attached to the bearing sleeve. Since the shaft part is rotatably press-fitted, it is inexpensive, and in addition to the fact that the columnar shaft part is resiliently supported by the rotational friction holding piece of the bearing sleeve, the bearing sleeve and the columnar shaft are By optimizing the rotational frictional force between the antenna and the parts, it is possible to easily obtain stable and smooth rotation of the antenna device.Furthermore, it is possible to replace only the bearing sleeve, and since the mounting hole is bottomed, the antenna device can be easily rotated. It looks good when removed, and the shape of the member to be attached is simple, but unlike the case where the attachment hole is a through hole, it has the effect of preventing dust from entering inside.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view showing a conventional antenna mounting device in a removed state; FIG. 2 is a partially sectional side view showing an antenna mounting device according to an embodiment of the present invention in an installed state; 3 is a front view of the same, and FIGS. 4 and 5 are sectional views taken along lines - and - in FIG. 2. 1, 21... Antenna device, 2, 22... Cabinet (attached member), 3... Antenna body,
4... Antenna base, 5, 24... Column-shaped shaft portion, 2
3...Bearing tube, 25...Small diameter engaging portion, 26...Shaft end, 27...Mounting base, 28...Mounting hole, 29...
... Side wall, 30 ... Bottom, 31 ... Notch, 32 ... Window hole, 33 ... Rotation stop groove, 34 ... Flange, 3
5... Rotation stopper, 36, 37, 38... Circumferential separation part, 39, 40... Axial separation part, 41
...Holding piece for rotational friction, 42...Holding piece for locking,
43... Protrusion.

Claims (1)

[Scope of utility model registration request] A bearing sleeve is press-fitted into a bottomed mounting hole formed in a mounting member made of a molded synthetic resin, and a protrusion protruding from the outer periphery of the bearing sleeve is formed on the side wall of the mounting hole of the mounting member. The shaft is removably engaged with the window hole to restrain the axial movement of the bearing sleeve, and the columnar shaft portion of the antenna base on which the antenna body is mounted is rotatably fitted into the bearing sleeve. The base side of the columnar shaft portion is elastically supported by the formed rotational friction holding piece, and the small diameter engagement portion provided at the tip side of the columnar shaft portion is engaged with the locking holding piece provided on the bearing sleeve. Let me,
An antenna mounting device characterized in that axial movement of a columnar shaft portion is restricted.