JP2020065170A - Speaker terminal connection structure and portable radio communication apparatus including the same - Google Patents

Abstract

To provide a terminal connection structure for a speaker terminal and a circuit board capable of preventing a connection failure and an instantaneous connection interruption due to a vibration and an impact, and a portable radio communication apparatus including the structure.SOLUTION: A speaker terminal connection structure includes: speaker side connection terminals 91, 92 being a + pole terminal and a - pole terminal of a speaker 10; and circuit board side connection terminals 8 (81, 82) arranged at opposite positions of the respective speaker side connection terminals on a circuit board and having contact with the speaker side connection terminals. At least ones of the speaker side connection terminals and the circuit board side connection terminals comprise connection terminals using a spring material. At least two circuit board side connection terminals are respectively arranged for each one of the + pole terminal and the - pole terminal. The two terminals are arranged in position relation where they are mutually rotated by a predetermined angle.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a terminal connection structure for connecting a speaker terminal and a circuit board, and a portable wireless communication device having the connection structure.

  Conventionally, the connection between the speaker terminal and the circuit board has been performed by soldering the lead wire. Although the soldering of the lead wire is advantageous for the contact failure and the wire breakage, it is not suitable for the production by the robot and the production efficiency is not good. Therefore, in order to cope with the automation of production without soldering, there is disclosed a connection structure in which a speaker connection circuit seat of a circuit board and a leaf spring terminal provided on the back surface of the speaker are pressed against each other (for example, patents). Reference 1).

  Also, in the connection structure using the leaf spring terminals, which is also intended for automatic mounting, the contact points of the pair of leaf spring terminals movable in the axial direction of the speaker are the same as those of the pair of acoustic devices located at substantially the same distance from the speaker. There is a configuration that is connected to an audio output terminal to prevent instantaneous interruption or the like due to contact failure due to vibration (for example, see Patent Document 2). Further, a plunger-type connection terminal is known in which a plunger is biased by a coil spring.

Japanese Utility Model Publication No. 02-057695 Japanese Patent No. 3783369

  However, in the connection structure as shown in Patent Document 1, contact failure due to vibration is likely to occur, which may lead to a momentary interruption of voice output or a problem of no voice output. Further, in the connection structure as shown in Patent Document 2, since the pair of movable contacts are arranged on the outer circumference of the frame on both outsides of the yoke of the speaker, the connection structure becomes large, and a small portable device such as a handy transceiver. It is difficult to apply to equipment.

  Patent Document 2 also discloses that the contact failure rate is reduced by providing two movable contacts, but since these movable contacts are provided in leaf spring-shaped terminals parallel to each other, Since it is vulnerable to vibration in the same direction, there is a risk that the two contacts will make contact failure at the same time. In addition, using a plunger type connection terminal is expensive.

  The present invention solves the above problems, and can prevent a connection failure and a momentary disconnection due to vibration or shock, and a terminal connection structure between a speaker terminal and a circuit board, and a portable wireless communication including the terminal connection structure. Intended to provide equipment.

  The present invention is a speaker terminal connection structure for connecting a speaker terminal and a circuit board, wherein a speaker side connection terminal that is a + pole terminal and a − pole terminal of the speaker and a speaker side connection terminal of the circuit board. Circuit board side connection terminals arranged at positions facing each other and in contact with the speaker side connection terminals, and at least one of the speaker side connection terminals and the circuit board side connection terminals is a connection terminal using a spring material. At least two circuit board side connection terminals are provided for each of the + pole terminal and the − pole terminal of the speaker side connection terminal, and the two terminals are arranged in a positional relationship in which they are rotated by a predetermined angle. It is characterized by being.

  Further, in the above connection structure, it is desirable that both the speaker side connection terminal and the circuit board side connection terminal are made of a spring material. Further, one of the speaker side connection terminal and the circuit board side connection terminal may be a terminal made of a spring material, and the other may be a contact terminal.

  Further, in the above connection structure, it is desirable that each of the + pole terminal and the − pole terminal of the circuit board side connection terminal is arranged line-symmetrically with the intermediate line therebetween.

  Further, the present invention is a portable wireless communication device having the above speaker terminal connection structure.

  According to the present invention, two circuit board side connection terminals are provided for each of the + pole terminal and the − pole terminal of the speaker side connection terminal, and the circuit board side connection terminals are arranged in a positional relationship in which they are rotated by a predetermined angle. It is possible to obtain a speaker terminal connection structure that is resistant to vibration and shock at low cost while reducing the number of connection steps.

1 is an external view of a mobile wireless communication device including a speaker terminal connection structure according to an embodiment of the present invention. FIG. 3 is a plan view showing an inner surface of a rear panel in which the circuit board is accommodated by removing the front panel in the portable wireless communication device. FIG. 3 is a perspective view showing an inner surface of a front panel in which a speaker is housed in the portable wireless communication device with a rear panel removed. The perspective view which shows the said circuit board. FIG. 3 is an enlarged perspective view of a connection terminal provided on the circuit board. FIG. 3 is an enlarged perspective view showing a state in which a connection terminal of the circuit board is connected to a connection terminal of the speaker, as seen through the circuit board. The partial side view which shows the state before and after the connection of the connection part of the connection terminal of the said circuit board, and the speaker connection terminal.

  Hereinafter, a speaker terminal connection structure according to an embodiment of the present invention and a mobile wireless communication device including the same will be described with reference to the drawings. FIG. 1 shows a portable wireless communication device 1 having a speaker terminal connection structure according to this embodiment. The mobile wireless communication device 1 includes a housing configured by a front panel 2 and a rear panel 3, and the front panel 2 and the rear panel 3 are joined together by abutting their opening edges. The front panel 2 is provided with a voice output hole 4 of a built-in speaker, a display LCD 5, an operation button 6, and the like. A circuit board and the like are incorporated in the rear panel 3. The portable wireless communication device 1 has a speaker-side connection terminal and a circuit-board-side connection terminal which are in contact with and connected to each other when the opening edges of the panels 2 and 3 are butted and coupled to each other.

  FIG. 2 shows the circuit board 7 side housed in the rear panel 3 of the mobile wireless communication device 1. FIG. 3 shows the speaker 10 side housed in the front panel 2 of the mobile wireless communication device 1. In FIG. 3, the frame, the yoke, the connection terminal 9 and the like on the back side of the speaker 10 are visible. In these figures, the speaker 10 is fixed to the front panel 2 and the circuit board 7 is fixed to the rear panel 3 at a predetermined position and a predetermined height position, respectively. The circuit board 7 is fixed to the inner surface of the rear panel 3 with screws or the like, and includes a circuit board side connection terminal 8. The circuit board side connection terminal 8 is to be brought into contact with the speaker side connection terminal 9, and is composed of connection terminals 81 and 82 using a conductive spring material. The circuit board side connection terminal 8 is provided at a predetermined position on the circuit board 7 facing the opening of the rear panel 3 in the state where the rear panel 3 and the front panel 2 are separated.

  The speaker 10 is provided with a speaker-side connection terminal 9 that is fixed to the front panel 2 with a screw or the like so as to output sound from the sound output hole 4 on the front surface of the front panel 2 and that contacts the circuit board-side connection terminal 8. The speaker-side connection terminal 9 is composed of connection terminals 91 and 92 made of a conductive material, which are positive and negative terminals provided on the back surface of the speaker 10. The connection terminals 81 and 82 of the circuit board side connection terminal 8 face each of the connection terminals 91 and 91 of the speaker side connection terminal 9 on the circuit board 7 when the rear panel 3 and the front panel 2 are combined. It is located in a position. At least two connection terminals 81 and 82 are provided for each of the connection terminals 91 and 91 that are the + pole terminal and the − pole terminal in order to ensure the connection (details will be described later).

  By connecting and fixing the opening edges of the rear panel 3 (FIG. 2) and the front panel 2 (FIG. 3) configured as above, the circuit board side connection terminals 8 (81, 82) and the speaker side connection are formed. The terminals 9 (91, 92) come into pressure contact with each other and are electrically connected.

  In the above embodiment, the spring material terminal is used for one circuit board side connection terminal 8 and the normal contact terminal (electrode) is used for the other speaker side connection terminal 9, but the speaker side connection terminal is used. A spring material may be used for both 9 and the circuit board side connection terminal 8. If a normal contact terminal (electrode) is used on the other hand, it is inexpensive and can be manufactured at low cost. Further, in the case of a terminal using a spring material for both, the followability of contact is improved, so that a higher degree of certainty of connection can be achieved.

  Next, with reference to FIGS. 4 to 6, details of the arrangement of the circuit board side connection terminal 8 and the speaker side connection terminal 9 will be described.

  4 and 5 show the connection terminals 81 and 82 of the circuit board-side connection terminal 8 provided on the circuit board 7. The connection terminal 81 includes spring material terminals 81A and 81B, and the connection terminal 82 includes spring material terminals 82A and 82B. As these spring material terminals 81A, 81B, 82A, 82B, those formed by bending a metal plate may be used.

  The spring material terminal 81A and the spring material terminal 81B are arranged in a positional relationship (L-shaped) rotated by a predetermined angle, for example, approximately 90 degrees, and similarly, the spring material terminal 82A and the spring material terminal 82B are also predetermined by each other. They are arranged in a positional relationship (L-shaped) rotated by an angle, for example, approximately 90 degrees. A pair of connection terminals are those having a positional relationship in which they are rotated by a predetermined angle, for example, approximately 90 degrees. Here, the positional relationship in which the spring material terminal is rotated by approximately 90 degrees is because the spring material terminal usually has a structure in which a leaf spring material that bends when stress is applied is used. It Further, the spring material terminals 81A and 81B and the spring material terminals 82A and 82B are arranged line-symmetrically with the space therebetween (the one-dot chain line CL in FIG. 5) being sandwiched therebetween.

  FIG. 6 shows connection terminals 91, 92 provided on the side of the speaker 10 fixed to the front panel 2. In the figure, the circuit board 7 is seen through the situation in which the connection terminals 81 and 82 on the circuit board side are connected to the connection terminals 91 and 92 (electrodes) on the speaker side. One connection terminal 91 is a + pole terminal of the speaker, and the other connection terminal 92 is a − pole terminal of the speaker. The connection terminal 91 and the connection terminal 92 are arranged in line symmetry with the both terminals sandwiched therebetween. The + pole terminal and the − pole terminal may be reversed. The spring material terminals 81A and 81B of the connection terminal 81 are connected to the connection terminal 91, and the spring material terminals 82A and 82B of the connection terminal 82 are connected to the connection terminal 92.

  In this embodiment, the contact terminals (electrodes) are used as the connection terminals 91, 92 on the speaker 10 side, but spring material terminals may be used for these connection terminals 91, 92. In that case, in each of the connection terminals 91 and 92, at least two spring material terminals may be arranged in a positional relationship in which they are rotated by a predetermined angle, for example, approximately 90 degrees, or may be connected to each other in an L shape. . Further, it is desirable to make the size of the connection terminals 91, 92 on the speaker side larger than the size of the connection terminals 81, 82 on the circuit board side. Further, in the case where at least two spring material terminals are used for each of the speaker-side connection terminals, the speaker-side connection terminal and the circuit board side are connected to each other with the two connection terminals 81 and 82 on the circuit board side connected. The connection terminals may be arranged so as to form a predetermined angle (for example, an angle at which they are orthogonal to each other). In this case, the size of the speaker-side connection terminals 91 and 92 does not necessarily have to be larger than the size of the circuit board-side connection terminals 81 and 82. Further, as the connection terminals 91 and 92 on the speaker side, it is also possible to use a rectangular parallelepiped or a cube having a top surface having an area capable of connecting the two connection terminals 81 and 82 on the circuit board side. The form in which the spring material terminals are used for the connection terminals on both the circuit board side and the speaker side in this way is suitable when the distance between the circuit board 7 and the speaker 10 is large.

  FIG. 7 shows a connection portion between a spring material terminal 81A which is one of the connection terminals 81 on the circuit board 7 side and a contact terminal 91 which is one of the connection terminals 9 on the speaker 10 side. Shows the state of. After the connection, the spring material terminal 81A is brought into contact with the contact terminal 91 with a pressing force, and the spring material terminal 81A is bent, so that the contact connection becomes reliable. The same applies to the other connection parts. In this manner, in the portable wireless communication device 1, when the rear panel 3 and the front panel 2 are fixed, the spring material terminals 81A and 81B on the circuit board 7 side are contact-connected to the contact terminals 91 on the speaker 10 side, respectively. Further, the spring material terminals 82A and 82B on the side of the circuit board 7 are respectively contact-connected to the contact terminals 92 on the side of the speaker 10.

  The operation and effect of the terminal connection structure of this embodiment configured as described above will be described. When vibration is applied to the mobile wireless communication device 1, the connection terminal 81 and the connection terminal 91, and the connection terminal 82 and the connection terminal 92 that are in contact with each other may be displaced. At this time, since a pair of connecting terminals that are in a positional relationship of being rotated by a predetermined angle, for example, approximately 90 degrees, are used, the direction of misalignment is different for each of the pair of connecting terminals. Therefore, even if one of the pair of connection terminals (spring material terminal, contact terminal) has a contact failure or disconnection, the other connection terminal (spring material terminal, contact terminal) can maintain the connection. it can. Therefore, connection failure due to vibration or impact can be prevented and avoided.

  As described above, the pair of contact terminals are in a positional relationship of being rotated by a predetermined angle, for example, approximately 90 degrees, so that even if the contact position is displaced when vibration is applied, contact failure does not occur. The positional relationship may be, for example, in the range of 60 degrees to 120 as long as it is within the range in which the above-described effects can be obtained. The "predetermined angle rotation" in the claims includes such a case.

  Further, since the spring material terminals 81A and 81B and the spring material terminals 82A and 82B are arranged in line symmetry, and the contact terminal 91 and the contact terminal 92 are arranged in line symmetry, the balance is left and right on the axis of symmetry. It is easy to remove and make the contact pressure uniform.

  Further, with the above configuration, it is possible to cope with production automation without soldering, the number of production steps is small, and it is not necessary to use an expensive plunger type connection terminal, and an inexpensive connection structure is provided. be able to.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, in the above-described embodiment, contact terminals (electrodes) are used as the connection terminals 91, 92 on the speaker 10 side, and spring material terminals 81A, 81B, 82A, 82B are used as the connection terminals 81, 82 on the circuit board 7 side. However, conversely, a spring material terminal may be used for the former and a contact terminal (electrode) for the latter. Further, the spring material terminals 81A and 81B and the spring material terminals 82A and 82B are arranged line-symmetrically, and the contact terminal 91 and the contact terminal 92 are arranged line-symmetrically, but they are not necessarily line-symmetrical. You don't have to. Further, in the above-described embodiment, the arrangement of the pair of connection terminals and contact terminals in a positional relationship rotated by a predetermined angle, for example, approximately 90 degrees, is L-shaped, but the arrangement is not limited to this. For example, it may have two directions such as an inverted L-shape and a T-shape, and may further have three directions of a star shape.

1 Portable Radio Communication Equipment 2 Front Panel 3 Rear Panel 7 Circuit Board 8 Circuit Board Side Connection Terminal 81, 82 Connection Terminal 81A, 81B, 82A, 82B Spring Material Terminal 9 Speaker Side Connection Terminal 91, 92 Connection Terminal 10 Speaker

Claims (5)

A speaker terminal connection structure for connecting a speaker terminal and a circuit board,
Speaker side connection terminals, which are the + pole terminal and the − pole terminal of the speaker,
A circuit board-side connection terminal that is arranged at a position facing each of the speaker-side connection terminals of the circuit board and is in contact with the speaker-side connection terminal;
At least one of the speaker side connection terminal and the circuit board side connection terminal is a connection terminal using a spring material,
At least two circuit board side connection terminals are provided for each of the + pole terminal and the − pole terminal of the speaker side connection terminal, and the two terminals are arranged in a positional relationship in which they are rotated by a predetermined angle. A speaker terminal connection structure characterized by the above.   The speaker terminal connection structure according to claim 1, wherein both the speaker side connection terminal and the circuit board side connection terminal are made of a spring material.   2. The speaker terminal connection structure according to claim 1, wherein one of the speaker side connection terminal and the circuit board side connection terminal is a terminal made of a spring material, and the other is a contact terminal. The positive electrode terminal and the negative electrode terminal of the circuit board side connection terminal are arranged in line symmetry with a space between them, respectively. Speaker terminal connection structure.
Connection structure.   A portable wireless communication device comprising the speaker terminal connection structure according to any one of claims 1 to 4.

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