JP2006230122A - Disconnection preventing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disconnection preventing apparatus which can be downsized while preventing the disconnection of conductors for connecting an actuator and a printed board. <P>SOLUTION: The conductors 4a-4d are conductively connected to a motor 1, and wound onto conductive terminals 3a-3d. The flexible printed board 5 is electrically connected to the conductors 4a-4d while the conductive terminals 3a-3d are inserted into terminal insertion holes 6a-6d. The terminal insertion holes 6a-6d are opened so as to include a portion of an end side 2a or an end side 2b of a terminal box 2 while the conductive terminals 3a-3d are inserted into the terminal insertion holes 6a-6d. The conductors 4a-4d connect the conductive terminals 3a-3d and the motor 1 through openings 9a-9d including a portion of outer circumferences of the terminal insertion holes 6a-6d and a portion of the end side 2a or the end side 2b of a terminal box 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disconnection prevention device for connecting an actuator and a device main body via a printed circuit board and a conductive wire. In particular, the conductive wire is wound around a conduction terminal provided in the actuator and a through hole is provided in the printed circuit board. The present invention relates to a disconnection preventing device for connecting an actuator and a device main body by inserting a conduction terminal into a hole.

  Conventionally, a configuration shown in FIG. 4 is known as a configuration in which an actuator and an apparatus main body are connected via a printed circuit board and a conductive wire. FIG. 4 is a schematic view seen from the side of a conventional apparatus. Hereinafter, this apparatus will be described.

  The terminal block 102 is attached to a motor (not shown). A coil for generating a driving force is provided inside the motor (not shown). A terminal 103 for conduction is attached to the terminal block 102. The conducting wire 104 is electrically connected to a coil in the motor. The conducting wire 104 is wound around the conducting terminal 103, and the conducting wire 104 and the conducting terminal 103 are electrically connected. The conducting wire 104 connects the coil in the motor and the conducting terminal 103 via the end side 102 a of the terminal block 102. A terminal insertion hole 106 is formed in the flexible printed circuit board 105. A soldering surface is formed around the terminal insertion hole 106. Although not shown, the flexible printed circuit board 105 is electrically connected to the conduction terminal 103 and the conductive wire 104 by soldering the connection portion between the terminal insertion hole 106 and the conduction terminal 103.

  In the above configuration, the conductive wire 104 is sandwiched between the flexible printed circuit board 105 and the terminal block 102 at a location (the clamping portion 109) that passes through the end side 102 a of the terminal block 102. Therefore, the problem that the conducting wire 104 is disconnected at the clamping portion 109 due to the clamping force has occurred.

An invention for solving this problem is disclosed in Patent Document 1. FIG. 5 is a schematic view seen from the side of the disconnection preventing device according to the prior art disclosed in Patent Document 1. As shown in FIG. The terminal block 102 is provided with a prevention mechanism 108, and the flexible printed circuit board 105 is fixed through the prevention mechanism 108. With this configuration, since the conductive wire 104 is not sandwiched between the terminal block 102 and the flexible printed circuit board 105, disconnection of the conductive wire 104 can be prevented.
Japanese Patent Laid-Open No. 2000-060048

  However, the conventional disconnection prevention device has a problem in that it is disadvantageous in reducing the size of the device because it is necessary to provide a gap between the terminal block 2 and the flexible cable 5.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a disconnection prevention device that can reduce the size of the device while preventing disconnection of a conductive wire connecting an actuator and a printed board.

  In order to achieve the above object, a disconnection preventing device of the present invention includes an actuator, a terminal block, a terminal for conduction, a conductive wire, and a printed board having a through hole. Here, the terminal block is attached to the actuator, and the conduction terminal is attached to the terminal block. The conducting wire conducts to the actuator and is wound around the conducting terminal. The printed circuit board is electrically connected to the conductive wire in a state where the conduction terminal is inserted into the through hole. The through hole is opened so as to include a part of the end side of the terminal block in a state where the conducting terminal is inserted into the through hole. The conducting wire connects the conduction terminal and the actuator via an opening including a part of the outer periphery of the through hole and a part of the end side of the terminal block.

  With this configuration, the conductive wire is not sandwiched between the printed circuit board and the terminal block. Moreover, it is not necessary to open a gap between the printed circuit board and the terminal block.

  In the disconnection prevention device of the present invention, the conduction terminals may be attached in a zigzag shape. In this case, the through hole is opened so as to include a part of the end side closer to the inserted conduction terminal among the end sides of the terminal block in a state where the conduction terminal is inserted into the through hole. It may be.

  With this configuration, it is possible to increase the lead-out pitch of the conductors in the same row, so that the work of winding the conductors around the conduction terminals can be facilitated.

  ADVANTAGE OF THE INVENTION According to this invention, the disconnection prevention apparatus which can achieve size reduction of an apparatus can be obtained, preventing disconnection of the conducting wire which connects an actuator and a printed circuit board.

(Embodiment)
1. Configuration of Each Member FIG. 1 is an exploded perspective view showing a state before a flexible printed circuit board 5 (hereinafter referred to as a flexible board 5) is connected to a motor 1. FIG.

  The motor 1 is fixed to the housing 7. The motor 1 drives other members via its rotating shaft (not shown). The motor 1 is a stepping motor or a servo motor, and is an actuator used for driving a lens of a camera or a head of a printer. Inside the motor 1, a coil for generating a driving force is provided.

  The motor 1 is provided with a terminal block 2, and conduction terminals 3 a to 3 d are attached to the terminal block 2. The terminal block 2 is made of an insulator, and the conduction terminals 3a to 3d are made of a conductor. The conducting terminals 3a to 3d are arranged in a state of being separated from each other. Therefore, the conductive terminals 3a to 3d are insulated from each other.

  Further, the conducting terminals 3 are not arranged in a straight line, but are arranged in a zigzag manner at substantially equal intervals. Specifically, the conduction terminals 3a and 3c are arranged at positions close to the end side 2a of the terminal block 2, and the conduction terminals 3b and 3d are arranged at positions near the end side 2b. Thereby, since the taking-out pitch of conducting wire 4a-4d in the same row | line can be enlarged, the operation | work which winds conducting wire 4a-4d mentioned later around the terminals 3a-3d for conduction | electrical_connection can be made easy. Further, since the distance from the end side 2a or 2b to the conducting terminals 3a to 3d can be shortened, the wiring length at the portion of the conducting wires 4a to 4d can be shortened, so that disconnection is difficult. Here, the zigzag shape refers to a bent line shape. For example, the zigzag shape may be a shape in which the arrangement position is alternately changed for each terminal, or the arrangement position is changed for every two terminals. In short, in this specification, the term zigzag is used in a broad sense other than a linear shape.

  The conducting wires 4a to 4d are electrically connected to a coil in the motor 1. The conducting wires 4a to 4d are wound around the conducting terminals 3a to 3d, respectively, and the conducting wires 4a to 4d and the conducting terminals 3a to 3d are electrically connected to each other.

  Here, the conducting wires 4a to 4d connect the coil in the motor 1 and the conducting terminals 3a to 3d via the ends of the terminal block 2 close to the conducting terminals 3a to 3d, respectively. For example, since the conducting terminal 3a is disposed at a position close to the end side 2a, the conducting wire 4a connects the coil in the motor 1 and the conducting terminal 3a via the end side 2a. Therefore, the conducting wires 4a and 4c pass through the end side 2a, and the conducting wires 4b and 4d pass through the end side 2b.

  The flexible board 5 is a printed circuit board made of polyimide or the like, and a conductive wire is formed inside. Terminal insertion holes 6 a to 6 d are formed at the tip of the flexible plate 5. The terminal insertion holes 6a to 6d are arranged at positions corresponding to the conduction terminals 3a to 3d, respectively. The terminal insertion holes 6a to 6d are long holes and are formed in an oval shape. Each of the terminal insertion holes 6a to 6d has a soldering surface formed around it.

2. Connection between Flexible Plate 5 and Motor 1 FIG. 2 is a plan view showing a state when the flexible plate 5 is attached to the motor 1. FIG. 3 is a side view showing a state when the flexible plate 5 is attached to the motor 1 (however, the portion of the flexible plate 5 is a sectional view).

  From the state shown in FIG. 1, as shown in FIGS. 2 and 3, the conduction terminals 3a to 3d are inserted into the terminal insertion holes 6a to 6d, respectively.

  In this state, the flexible plate 5 is opened such that the terminal insertion holes 6 a to 6 d include a part of the end side 2 a or 2 b of the terminal block 2. For example, the terminal insertion hole 6a is opened to include a part of the end side 2a, and the terminal insertion hole 6b is opened to include a part of the end side 2b.

  By arranging the flexible plate 5 as described above, openings 9a to 9d including a part of the outer periphery of the terminal insertion holes 6a to 6d and a part of the end side 2a or 2b of the terminal block 2 are formed. . For example, a semicircular opening 9a is formed by the terminal insertion hole 6a and the end side 2a.

  As shown in FIGS. 2 and 3, the conductive wires 4 a to 4 d connect the conduction terminals 3 a to 3 d and the motor 1 via 9 a to 9 d, respectively. By arranging in this way, the conducting wires 4a to 4d are not sandwiched between the flexible plate 5 and the terminal block 2, so that the conducting wires 4a to 4d are sandwiched between the flexible plate 5 and the terminal block 2. It is possible to prevent disconnection due to the clamping force. Further, since there is no need to open a gap between the flexible plate 5 and the terminal block 2, the apparatus can be reduced in size.

  As shown in FIG. 2 and FIG. 3, after inserting the conducting terminals 3a to 3d into the terminal inserting holes 6a to 6d, respectively, soldered to the connecting portions of the terminal inserting holes 6a to 6d and the conducting terminals 3a to 3d The terminal insertion holes 6a to 6d, the conduction terminals 3a to 3d, and the conducting wires 4a to 4d are electrically connected.

  The flexible plate 5 is electrically connected to the apparatus main body. On the other hand, the conducting terminals 3 a to 3 d and the conducting wires 4 a to 4 d are electrically connected to the coil in the motor 1. Then, the motor 1 is electrically connected to the apparatus main body through a conduction path including the flexible plate 5, the conduction terminal 3 and the conductor 2. For this reason, electric power can be supplied to the motor 1 from the apparatus main body.

  The motor 1 is an example of the actuator of the present invention. The terminal insertion holes 6a to 6d are examples of the through holes of the present invention. The flexible printed circuit board 5 is an example of the printed circuit board of the present invention.

3. Summary As described above, according to the present embodiment, the disconnection prevention device includes the motor 1, the terminal block 2, the terminals 3a to 3d for conduction, the conductors 4a to 4d, and the terminal insertion holes 6a to 6d. Flexible printed circuit board 5. The terminal block 2 is attached to the motor 1, and the conduction terminals 3 a to 3 d are attached to the terminal block 2. Conductive wires 4a to 4d are conducted to motor 1 and are wound around conducting terminals 3a to 3d. The flexible printed circuit board 5 is electrically connected to the conducting wires 4a to 4d in a state where the conducting terminals 3a to 3d are inserted into the terminal insertion holes 6a to 6d. The terminal insertion holes 6a to 6d are opened so as to include a part of the end side 2a or 2b of the terminal block 2 in a state where the conduction terminals 3a to 3d are inserted into the terminal insertion holes 6a to 6d. The conducting wires 4a to 4d pass through the openings 9a to 9d including a part of the outer periphery of the terminal insertion holes 6a to 6d and a part of the end side 2a or 2b of the terminal block 2, respectively. And the motor 1 are connected.

  With this configuration, since the conducting wires 4a to 4d are not sandwiched between the flexible plate 5 and the terminal block 2, the conducting wires 4a to 4d are sandwiched between the flexible plate 5 and the terminal block 2 due to the clamping force. It is possible to prevent disconnection. Further, since there is no need to open a gap between the flexible plate 5 and the terminal block 2, the apparatus can be reduced in size.

  Moreover, according to this Embodiment, you may attach the terminals 3a-3d for conduction to the terminal block 2 in zigzag form. In this case, the terminal insertion holes 6a to 6d are connected to the conduction terminals (conduction terminals) inserted in the end 2a or 2b of the terminal block 2 in a state where the conduction terminals 3a to 3d are inserted into the terminal insertion holes 6a to 6d. You may make it open so that a part of the edge nearer one of the common terminals 3a-3d) may be included.

  With this configuration, it is possible to increase the lead-out pitch of the conducting wires 4a to 4d in the same row (for example, the conducting terminals 3a and 3c). Therefore, the work of winding the conducting wires 4a to 4d described later around the conducting terminals 3a to 3d is performed. Easy to do. Further, since the distance from the end side 2a or 2b to the conducting terminals 3a to 3d can be shortened, the wiring length at the portion of the conducting wires 4a to 4d can be shortened, so that disconnection is difficult.

  In the present embodiment, the flexible printed circuit board 5 is used as the printed circuit board. However, the present invention is not limited to this, and a rigid board such as a glass epoxy board may be used.

  Moreover, in this Embodiment, although the terminals 3a-3d for conduction | electrical_connection were arrange | positioned in zigzag form, you may arrange | position not only to this but to arrange on a straight line. Moreover, in this Embodiment, although the terminals 3a-3d for conduction | electrical_connection are arrange | positioned at substantially equal intervals, each space | interval may differ.

  Further, in the present embodiment, the terminal insertion holes 6a to 6d have a long hole shape, but the present invention is not limited to this. For example, the shape may be larger than the conductive terminals 3a to 3d, or may be rectangular. In short, the terminal insertion holes 6a to 6d may be opened so as to include a part of the end side 2a or 2b of the terminal block 2 in a state where the conducting terminals 3a to 3d are inserted into the terminal insertion holes 6a to 6d. Good.

  In the present embodiment, the conduction terminals 3a to 3d are conductors. However, the present invention is not limited thereto, and may be nonconductors or insulators. In short, the conducting wires 4a to 4d and the flexible plate 5 may be electrically connected. If the conducting terminals 3a to 3d are non-conductive, the conducting wires 4a to 4d and the flexible plate 5 may be directly electrically connected. Good.

  Moreover, in this Embodiment, although conducting wire 4a-4d and the flexible board 5 were connected by soldering, it is not restricted to this. For example, it may be connected with a conductive paste such as a silver paste.

  The disconnection prevention device of the present invention can be applied to a device that electrically connects the device main body and the motor by connecting the motor and the printed circuit board, and is applied to a device equipped with a motor such as a camera or a printer. Is possible.

The exploded perspective view which shows the structure of the disconnection prevention apparatus of this Embodiment Plan view of the disconnection prevention device of the present embodiment Schematic view seen from the side of the disconnection prevention device of the present embodiment Schematic view from the side of a conventional disconnection prevention device Schematic view from the side of a conventional disconnection prevention device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor 2 Terminal block 3a-3d Conduction terminal 4a-4d Conductor 5 Flexible printed circuit board 6a-6d Terminal insertion hole 9a-9d Opening part

Claims (2)

A terminal block attached to the actuator;
A conduction terminal attached to the terminal block;
A conducting wire that conducts to the actuator and is wound around the conducting terminal;
A printed circuit board having a through-hole and electrically connected to the conducting wire in a state where the conduction terminal is inserted into the through-hole,
The through hole is opened so as to include a part of an end side of the terminal block in a state where the conduction terminal is inserted into the through hole,
The conductive wire connects the conduction terminal and the actuator via an opening including a part of the outer periphery of the through hole and a part of the end side of the terminal block.
Disconnection prevention device. A terminal block attached to the actuator;
Three or more conducting terminals attached to the terminal block in a zigzag shape;
A conducting wire that conducts to the actuator and is wound around the conducting terminal;
A printed circuit board having a through hole corresponding to each of the three or more conducting terminals and electrically connected to the conducting wire in a state where the conducting terminal is inserted into the through hole;
The through hole is opened so as to include a part of an end side closer to the inserted conduction terminal among the end sides of the terminal block in a state where the conduction terminal is inserted into the through hole. ,
The conductive wire connects the conduction terminal and the actuator via an opening including a part of the outer periphery of the through hole and a part of the end side of the terminal block.
Disconnection prevention device.

Images