JPH0615319U - Structure of antenna mount - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the strength of the antenna mount of a handheld radio and to obtain a structure suitable for streamlining the manufacturing process. [Structure] An antenna mount 2 is installed by penetrating a wall surface 11 of a shield case 1, and an auxiliary support plate 4 is fixed to a base portion of an antenna joining shaft 21 of the mount 2 with a nut 5 and the antenna mount 2 is sandwiched. The structure of the antenna mount part, in which the outer walls 61A and 61B of the cases 6A and 6B formed in two parts are provided with the groove parts 62A and 62B which are fitted and fitted into the protrusion parts 41A and 41B of the auxiliary support plate 4, respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention particularly relates to the structure of the antenna mount part of the handy type wireless communication device.

[0002]

[Prior art]

 The handy type wireless communication device has a feature that the microphone, speaker, battery, etc. are stored in the case and you can hold the case in your hand to talk in any posture. The antenna has a bar antenna protruding from the top of the case. This antenna is a hindrance when not in use, so it is usually removable via a connector.

There are two types of antenna connectors, a BNC type and a screw-in type. The BNC type is small and convenient for one-touch attachment / detachment, and has good high-frequency characteristics, which is good for measuring instruments and stationary equipment. However, there is concern about the strength of the antenna for a handheld device. In this respect, screw-type connectors have many advantages such as strength and low cost except for the labor of attachment and detachment, and are often used for handy machines.

The method of fixing the antenna mount including the antenna jack to the machine body is as follows: (1) As shown in FIG. 5, the antenna mount is fixed to the outer wall of the case, and the circuit inside the shield case is connected by a coaxial cable or the like. (2) As shown in FIG. 6, the shield case wall and the case wall are fixed together by an antenna mount penetrating the wall. There are two ways.

[0005]

[Problems to be solved by the device]

 The method of fixing the antenna mount described in (1) above is convenient for manufacturing work, but the coaxial cable that connects to the circuit has a problem in that it takes time to process and the core wire is thin, so it is easy to break at the soldering part. , Mismatch loss cannot be ignored above the VHF band. In addition, the external force applied to the antenna concentrates on the antenna mount, so the case requires special reinforcement.

In the method (2) of fixing the shield case and the outer case together by the antenna mount, the shield case reinforces the strength of the case, and the antenna input can be directly connected to the circuit. Although the points can be cleared, in the assembly work process, the work of assembling the shield case in the semi-completed state into the outer case and then attaching the shield lid increases, and both the fixing of the shield case to the outer case and the antenna mount are required. In order to achieve both tightening, mechanical precision and work skill are required.

[0007]

[Means for Solving the Problems]

 In this invention, as shown in FIG. 1, the antenna mount 2 is installed by penetrating the wall surface 11 of the shield case 1, and the auxiliary support plate 4 is fixed to the nut 5 and the like at the base of the antenna joining shaft 21 of the mount 2. The structure is such that the outer walls 61A and 61B of the cases 6A and 6B, which are molded in two with the antenna mount 2 sandwiched, are provided with groove portions 62A and 62B which are fitted and fitted into the protruding portions 41A and 41B of the auxiliary support plate 4, respectively. Therefore, it provides an antenna mount structure that is excellent in workability, mechanical strength, and electrical characteristics.

[0008]

【Example】

 FIG. 2 shows a cross-sectional view of the structure of a handheld radio device embodying the present invention.

The antenna mount 2 penetrates the upper wall 11 of the shield case 1 and is inserted from the inside of the case 1. If necessary, the antenna mount 2 penetrates the rectangular auxiliary support plate 4 with the spacer 3 interposed therebetween, and the antenna fitting shaft 21. Fix with the nut 5 using the male screw of the part. As a result, the antenna mount and the shield case can be handled as a complete unit, so the transmitter / receiver circuit in the shield case can be adjusted for testing with the antenna or dummy antenna connected.

After the adjustment test, the shield case is placed so that the protrusion 41A of the auxiliary support plate 4 is inserted into the groove 62A provided in the upper wall 61A of the front side 6A of the two-part case, and the shield case is placed on the stud 63 of the case. Secure with screws. If an ordinary margin of 0.1 to 0.2 mm is provided in the groove portion 62A and a mounting hole of the stud 63 or the like is provided with an ordinary margin of about 0.3 mm, there is no difficulty in combining them.

Since the front case 6A is provided with an operation unit, a display unit, a microphone and a speaker, a test in a final state can be completed by connecting to the circuit in the shield case 1, and if the test is passed. The rear case 6B is completed as a product by aligning the groove portion 62B with the protruding portion 41B of the auxiliary support plate and stacking and fixing it on the case 6A (screwing, fitting, etc.).

As a partial view, the antenna mount 2 is shown in FIG. 3 and the auxiliary support plate is shown in FIG.

[0013]

[Effect of device]

 The main construction of this invention is that the auxiliary support plate 4 is pre-tightened and fixed to the antenna mount 2 attached to the shield case, and the case 6A and 6B are fitted into the protruding portions 41A and 42B of the auxiliary support plate 4 and the groove portions are fitted therein. 62A and 62B are provided, and there is no problem because the auxiliary support plate 4 has a simple structure and the material cost is small. In addition, the structure of the groove portions 62A and 62B of the cases 6A and 6B does not cause any trouble in the work of the stamping die even in the manufacturing process of the normally used insulation mold such as ABS resin. Has the effect of reinforcing.

Even when the antenna mount 2 is fixed to the shield case only at its base, there is concern about the bending strength when a rod-shaped antenna is added. However, in the assembled state, the protrusion 41A. Since 41B is supported by the groove portions 62A and 62B of the cases 6A and 6B, it exerts a great effect on the stress resistance of pushing, pulling and bending.

As described in the embodiment regarding the manufacturing process, it is not only easy to mount the antenna mount 2 on the shield case 1 in advance, but also the matching of the antenna circuit can be optimized. In addition, the shield case can be adjusted independently, and if it is then installed in the front case, the actual operation test as a radio can be performed, and the internal inspection is easy.

In summary, according to the structure of the antenna mount of the present invention, both the mounting strength of the antenna mount and the strength of the upper surface of the case are reinforced, and the structure is electrically the best, There is also an effect that the process can be rationalized naturally.

[Brief description of drawings]

FIG. 1 is an exploded view of a handheld radio device of the present invention

FIG. 2 is a diagram of an embodiment of the present invention.

[Figure 3] Antenna mount diagram

[Fig. 4] Diagram of auxiliary support plate

[Figure 5]

FIG. 6 is an example diagram of a conventional structure.

[Explanation of symbols]

 1 Shield Case 2 Antenna Mount 21 Antenna Joining Shaft 3 Spacer 4 Auxiliary Support Plate 5 Nut 6A ・ 6B Case 62A ・ 62B Case Groove

Claims (1)

[Scope of utility model registration request] 1. In a handheld wireless communication device, an antenna mount 2 is installed by penetrating a wall surface 11 of a shield case 1 for accommodating a transmission / reception circuit, and an auxiliary support plate 4 is provided at the base of an antenna joint shaft 21 of the mount 2. While fixing with nuts 5 etc., the outer wall 61A, 61B of the case 6A, 6B, which is molded in two with the antenna mount 2 sandwiched, is fitted into the protrusions 41A, 41B of the auxiliary support plate 4 to form a groove 62A. 62B is a structure of an antenna mount part.