JPH0539012U - Antenna mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an antenna mounting structure in which the antenna can be easily mounted from the outside of the housing of the electronic device, and the antenna cannot be removed once it is mounted. [Structure] A mounting screw 24 is rotatably provided at the base end of the antenna 22, a receiving screw that is screwed with the mounting screw 24 is provided at the housing 21, and a mounting screw 24 is provided between the mounting screw 24 and the antenna 22. A protrusion 22b, a claw portion 24b, and a spring 27 for transmitting only the rotation of the antenna in the direction of arrow a to the mounting screw 24 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an antenna mounting structure that is mounted on a housing of an electronic device.

[0002]

[Prior Art]

 Due to the Radio Law, it is necessary for the wireless device to have a structure in which the antenna cannot be removed from the outside of the housing so that the user cannot freely change the length of the antenna.

5 and 6 show a conventional Annatte attachment structure of this type.

As shown in FIG. 5, the base end of the antenna 1 is screwed to a printed wiring board 4 provided in the main body 3 of the housing 2 of the radio, and the cover 5 is attached to the housing main body 3. As a result, the screwed portion of the antenna 1 is covered with the housing 2. Therefore, the antenna 1 cannot be removed from the housing unless the cover 5 is removed from the housing body 3.

However, according to this conventional wireless device, the length of the entire wireless device is the length L of the wireless device housing 2 plus the length L1 of the antenna 1 as shown in FIG. There was a problem that the packaging material 7 of the wireless machine became very long.

In order to solve this problem, there is also a structure in which a mounting portion 9 for screwing the base end of the antenna 1 is projected from the housing 2 and the antenna 1 is fixed to the outside of the housing 2 with a special screw 11. is there. With this structure, the packaging for the radio can be reduced. Also, the shape of the recess 11a formed on the screw head of the special screw 11 is different from that of a normal screw, so a user who does not have a tool for the special screw 11 should remove the antenna 1 from the housing 2. I can't.

However, with this structure, there is a problem that the mounting portion 9 is exposed to the outside of the housing, which impairs the external appearance, and when the user has a tool for the special screw 11, the antenna 1 is not used. The problem of being removable arises.

[0008]

[Problems to be solved by the device]

 As described above, in the conventional antenna mounting structure, particularly in the case where the antenna is mounted on the housing at the stage of assembling the housing of the electronic device, the antenna must be attached to the outside of the housing before shipment. However, there was a problem that the packaging material became long.

The present invention has been made to solve such a conventional drawback, and the antenna can be easily attached from the outside of the housing of the electronic device, and the antenna cannot be removed once it is attached. The purpose is to provide a mounting structure for an antenna that cannot.

[0010]

[Means for Solving the Problems]

 According to the present invention, in the mounting structure of the antenna in which the base end side of the antenna is fixed to the housing of the electronic device, a mounting screw is rotatably provided on the base end side of the antenna, and the mounting screw is mounted on the housing. A rotation screw transmitting means for transmitting the rotation of the antenna to the mounting screw only between the antenna and the mounting screw in the screwing direction of the mounting screw with respect to the receiving screw. Is provided.

Further, the receiving screw provided in the housing is provided in the housing in a state in which rotation of the mounting screw in the screwing direction is blocked by the housing and is rotatable in a direction opposite to the screwing direction. May be.

[0012]

[Action]

 In the first invention, the rotation of the antenna is transmitted to the mounting screw only when the antenna is rotated in the screwing direction of the mounting screw with respect to the receiving screw, and in the second invention, the receiving screw is in the screwing direction. Since it is rotatable in the opposite direction, in either case, the antenna can be rotated and screwed into the receiving screw, but it cannot be removed from the receiving screw.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

FIGS. 1 to 3 are views for explaining the first embodiment, FIG. 1 is a sectional view for explaining the operation of the antenna mounting structure, FIG. 2 is a perspective view of the antenna mounting structure, and FIG. It is an exploded perspective view of a rotation transmission means.

As shown in FIG. 1, a nut (receiving screw) 23 for fixing the antenna 22 is fixed to the housing 21 of the wireless device (electronic device).

On the other hand, a mounting screw 24 that is screwed into the receiving screw 23 is attached to the base end side of the antenna 22. A claw portion 24b is provided by forming a slope 24a on the upper end surface of the mounting screw 24. The mounting structure of the mounting screw 24 will be described below.

As shown in FIG. 3, a screw hole 22a is formed in the end face of the antenna 22 on the base end side, and a projection 22b is provided on the peripheral surface near the base end. The base end side of the antenna 22 is inserted into a hole 24c formed in the mounting screw 24 and a spring 27, and a holding plate 28 is fixed to the end face by a screw 29. Therefore, the mounting screw 24 is rotatable with respect to the antenna 22 and is pressed against the protrusion 22b by the spring 27.

To attach the antenna 22 to the housing 21, as shown in FIG. 1A, the base end side of the antenna 22 is inserted into the receiving screw 23 from the outside of the housing 21, and the antenna 22 is moved in the direction of arrow a. Just turn it around. As shown in FIG. 1 (b), when the antenna 22 is rotated in the direction of arrow a, the projection 22b of the antenna 22 abuts on the claw 24b of the mounting screw 24, so that the mounting screw 24 is integrated with the antenna 22 and the arrow 22a is attached. Rotate in the a direction. Therefore, by rotating the antenna 22 in the direction of arrow a, the mounting screw 24 is screwed into the receiving screw 23, and the base end side of the antenna 22 is fixed to the housing 21.

On the other hand, as shown in FIG. 1C, when the antenna 22 is rotated in the direction of arrow b while the antenna 22 is attached to the housing 21, the protrusion 22 b is located on the slope 24 a of the mounting screw 24. As it passes, the antenna 22 spins against the mounting screw 24. Therefore, even when the antenna 22 is rotated in the direction of the arrow b outside the housing 21, the mounting screw 24 does not come off the receiving screw 23.

In this example, the mounting screw 24 is a male screw and the receiving screw 23 is a female screw, but the mounting screw may be a female screw and the receiving screw may be a male screw.

FIG. 4 is a diagram for explaining the second embodiment.

In this example, a mounting screw 24A made of a male screw is formed at the base end of the antenna 22A.

On the other hand, a receiving screw 23A formed with a female screw to be screwed with the mounting screw 24A is housed in a cylindrical case 30, and this case 30 is fixed to a casing 21A of the radio device. Further, a plurality of balls 32 are provided between the outer peripheral surface of the receiving screw 23A and the inner peripheral surface of the case 30, and when the receiving screw 23A tries to rotate in the direction of arrow a, the receiving screw 23A is inserted via the balls 32. Is fixed to the case 30, and the receiving screw 23A constitutes a one-way clutch which can freely rotate in the direction of arrow b.

Therefore, when the antenna 22A is rotated in the direction of arrow a in order to attach the antenna 22A to the housing 21A, the receiving screw 23A is fixed to the housing 21A, so that the mounting screw 24A It can be screwed into the receiving screw 23A. On the other hand, in the direction of the arrow b, since the receiving screw 23A idles, the mounting screw 24A does not come off from the receiving screw 23A even if the antenna 22A is rotated in the direction of the arrow b.

[0025]

[Effect of the device]

 As described above, in the first device, the rotation of the antenna is transmitted to the mounting screw only when the antenna is rotated in the screwing direction of the mounting screw on the antenna side with respect to the receiving screw on the housing side. Since the receiving screw is only rotatable in the direction opposite to the screwing direction of the mounting screw, in either case, by rotating the antenna and screwing the mounting screw into the receiving screw, The antenna can be attached to the housing from the outside, but the antenna once attached to the housing cannot be removed from the housing even if it rotates in the direction opposite to the screwing direction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating the operation of an antenna mounting structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the antenna mounting structure of FIG.

FIG. 3 is an exploded perspective view illustrating a rotation transmission means of the antenna mounting structure of FIG.

FIG. 4 is a sectional view of an antenna mounting structure according to a second embodiment of the present invention.

FIG. 5 is an exploded perspective view of a conventional wireless device.

FIG. 6 is a perspective view illustrating packaging of the wireless device in FIG.

FIG. 7 is a perspective view illustrating another conventional antenna mounting structure.

[Explanation of symbols]

21,21A Housing 22,22A Antenna 22b Projection 23,23A Receiving screw 24,24A Mounting screw 24a Slope 24b Claw 27 Spring 30 Case 32 Ball

Claims (2)

[Scope of utility model registration request] 1. In an antenna mounting structure in which a base end side of an antenna is fixed to a housing of an electronic device, a mounting screw is rotatably provided on a base end side of the antenna, and the mounting is mounted on the housing. A receiving screw that is screwed with a screw is provided, and a rotation transmitting unit that transmits the rotation of the antenna to the mounting screw only between the antenna and the mounting screw in a direction in which the mounting screw is screwed into the receiving screw. An antenna mounting structure characterized by being provided. 2. An antenna mounting structure in which a base end side of an antenna is fixed to a housing of an electronic device, a mounting screw is provided on a base end side of the antenna, and the mounting screw is screwed on the housing. A receiving screw to be inserted is provided, and the receiving screw is provided on the housing in a state in which rotation of the mounting screw in the screwing direction is blocked by the housing and is rotatable in a direction opposite to the screwing direction. Antenna mounting structure characterized by being provided.