JP2007280834A - Terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal device such as a terminal for input to a speaker that is space-saving and facilitates attachment of an external lead even if the terminal is of a screw type. <P>SOLUTION: This terminal device comprises: a shaft member held by a terminal plate 1 and having a screw 2a provided on the outer periphery thereof; a connecting piece 3 electrically connected to the shaft member 2; and a knob 4 screwed to the shaft member 2 and enabling pressure contact of the external lead 5. The shaft member 2 includes: a shaft hole 2c provided to allow insertion of the external lead 5 in the axial direction from a shaft top 2b; a slanting hole 2d penetrating from the rear end of the shaft hole 2c to an outer peripheral portion of the shaft; and a washer part 2e disposed at an outer peripheral portion of the shaft bordering the slanting hole 2d. The knob 4 is screwed to the shaft member 2 from the top side thereof, and is configured so that a tip portion 4c can bring the external lead 5 projecting toward the outer peripheral portion of the shaft into pressure contact with the washer part 2e via the shaft hole 2c and the slanting hole 2d. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a terminal device that is provided in a speaker or the like used for sound reproduction and connects an external lead.

  Conventionally, various types of terminal devices for connecting external leads have been proposed and adopted. For example, as shown in Patent Document 1, the core wire portion 52 of the electric wire 51 is inserted from the electric wire insertion hole 22 of the block 21, and is sandwiched and connected between the distal end portion of the set screw 41 and the inner side surface of the block 21. What is fixed is known. Further, as shown in Patent Document 2, there is a type in which the cord 47 is inserted between the terminal portion 7 and the lock spring 9 from the electric wire insertion recesses 13 and 28 and tightened with a screw of the member 4 so as not to come off.

  In recent years, the number of users who enjoy watching movies on DVD has been increasing for speakers for sound reproduction devices for 5.1ch home theaters. On the other hand, the speaker size is required to be slim and tallboy type as the size of the television increases. Therefore, as a speaker input terminal device, a high-fidelity screw-type terminal is firmly wired to enjoy movies and music with high sound quality, while at the same time miniaturizing making use of Tallboy type design, There is an increasing demand for simple wiring terminals.

As an example, for example, there is a screw type terminal as shown in FIG. 5, and in FIG. 5, a shaft member 11 is held on the terminal plate 10, and a knob 12 screwed into a screw portion provided on the outer peripheral portion thereof, As a configuration for connecting and fixing the external lead 13, the core wire portion 13a of the external lead 13 is inserted from the side of the through hole 14 formed in the shaft member 11 in a direction perpendicular to the axis, and then the knob 12 is tightened. Can be fixed. In FIG. 5, reference numeral 16 denotes a connection piece to which a lead in the apparatus is connected, and is fastened and fixed together with a washer 18 by a nut 17 to a screw shaft 11 a formed integrally with the shaft member 11. By this fixing, the shaft member 11 itself is also attached to the terminal plate 10.
Japanese Patent Laid-Open No. 9-320666 Japanese Patent Laid-Open No. 1-189876

  In such a conventional terminal device, when the external lead 13 is inserted into the hole 14, it is inserted from the lateral direction, so that a large insertion space 15 is required, and the terminal plate 10 becomes large. Further, since the through-hole 14 in the right-angle direction cannot be directly seen unless the knob 12 is fully returned, there is a problem that insertion workability is poor.

  An object of the present invention is to solve such problems and to provide a terminal device such as an input terminal to a speaker which can save space and can easily attach an external lead even with a screw terminal.

  The terminal device of the present invention includes a shaft member held on a terminal plate and threaded on the outer periphery thereof, a connecting piece electrically connected to the shaft member, and screwed to the shaft member to press-contact external leads. A terminal device having a knob to be connected, wherein the shaft member penetrates from the top of the shaft so that an external lead can be inserted in the axial direction, and penetrates from the back end of the shaft hole to the outer periphery of the shaft. And a washer portion disposed on an outer peripheral portion of the shaft facing the inclined hole, the knob is screwed into the shaft member from the top side, and a tip is connected to the shaft through the shaft hole and the inclined hole. An external lead protruding from the outer peripheral portion is configured to be press-contactable to the washer portion.

  Since the terminal device of the present invention is configured as described above, the external lead is simply inserted into the shaft hole from the top of the shaft member, and the tip is guided by the inclined hole so that the tip protrudes from the outer periphery of the shaft member. There is an effect that the wiring work can be performed very easily and surely only by tightening with the screwed knob. Further, since the insertion space in the conventional configuration is not necessary, there is an effect that the apparatus can be reduced in size.

  Hereinafter, the best mode for carrying out the terminal device of the present invention will be described in detail with reference to FIGS. 1 to 3.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a terminal device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a state in which a lead is inserted and pressed by a knob. The shaft member held by the terminal plate 1, 3 is a connecting member that is electrically connected to the shaft member 2, 4 is a knob that is screwed onto the outer periphery of the shaft member 2, and 5 is a pressure connection by the shaft member 2 and the knob 4. External leads. Reference numeral 6 denotes a nut screwed into a bolt portion 2 f formed integrally with the shaft member 2, and the connecting piece 3 is press-fixed to the terminal plate 1 with a washer 7 interposed therebetween, whereby the shaft member 2 and the connecting piece are connected. 3 is electrically connected, and the shaft member 2 is held by the terminal plate 1. Here, the connection piece 3 is connected to an internal circuit such as a device to which the terminal plate 1 is attached, for example, a speaker device.

  The shaft member 2 is provided with a screw 2a on the outer periphery thereof, and a shaft hole 2c is opened through the shaft top portion 2b so that the core wire 5a of the external lead 5 can be inserted. An inclined hole 2d penetrating the outer peripheral portion is formed, and a washer portion 2e is disposed and formed on the outer peripheral portion of the shaft member 2 facing the inclined hole 2d. By inserting the exposed core wire 5a of the external lead 5 into the shaft hole 2c, the outer lead 5 is guided and protruded by the inclined portion of the inclined hole 2d formed continuously with the shaft hole 2c of the shaft member 2, and its tip Can face the washer portion 2e.

  The knob 4 forms a screw portion 4 a that is screwed into a screw 2 a that is provided on the outer periphery of the shaft member 2, and has a shape having a through hole 4 b that can advance and retreat on the outer peripheral portion of the shaft member 2. . A portion of the outer lead 5 protruding from the outer periphery of the shaft at the tip of the core 5 a is pressed against the washer 2 e by the tip 4 c of the knob 4.

  As shown in FIG. 3, in the shaft hole 2 c and the inclined hole 2 d described above, the intersection angle α of the center line B of the inclined hole 2 d with respect to the axis A of the shaft member 2 is configured to be an acute angle. With this configuration, the leading end portion of the exposed core wire 5a of the external lead 5 inserted into the shaft hole 2c is guided from the shaft hole 2c to the inclined portion of the inclined hole 2d, and the leading end portion can easily be a shaft member. 2 can face the washer part 2e of the outer peripheral part.

  FIG. 4 is a front view of the terminal device, and terminals configured as shown in the cross-sectional view described above are configured as, for example, a plus-side terminal 8a and a minus-side terminal 8b for input of a speaker device. Both the terminals 8a and 8b have the same configuration, and will be described with the same reference numerals in this figure. The cross section taken along line XX in FIG. 4 is the configuration of FIGS.

  With respect to the terminal device configured as described above, a series of operations in fixing and fixing the external lead 5 will be described below.

  First, as shown in FIG. 1, the knob 4 is loosened, and the inclined hole 2d is retracted from the tip 4c so that it can be seen on the outer periphery of the shaft member 2, while the core wire 5a at the tip of the external lead 5 is exposed. The tip of the core wire 5a is inserted into the shaft hole 2c from the top 2b of the shaft member 2. At this time, although the inclined hole 2d cannot be visually observed from the shaft hole 2c, the tip of the core wire 5a is guided by the inclined hole 2d only by pushing (pushing) the shaft hole 2c, and finally, the shaft It protrudes in the washer part 2e in the outer peripheral part of the member 2, and this can be confirmed. In this state, by tightening the knob 4 by screwing, the portion of the core wire 5a protruding from the washer portion 2e can be pressed and fixed to the washer portion 2e by the distal end portion 4c of the knob 4.

  As described above, according to the present embodiment, the external lead 5 is only inserted into the shaft hole 2 c from the top of the shaft member 2, the tip is guided by the inclined hole 2 d, and the tip protrudes to the outer peripheral portion of the shaft member 2. Then, there is an effect that the wiring work can be performed very easily and surely only by screwing and tightening the knob 4. Further, since the insertion space in the conventional configuration is not necessary, there is an effect that the apparatus can be reduced in size.

  The terminal device of the present invention can be applied as a screw type terminal device that is provided in and connects an external lead, and particularly as a terminal device of an audio device such as a speaker that is often connected by a user.

Sectional drawing of the state before inserting the external lead of the terminal device in the 1st Embodiment of this invention Sectional view of the terminal device with the external lead inserted and pressed with a knob Explanatory drawing of the angle of intersection of the inclined hole with respect to the shaft hole of the terminal device Front view of the terminal device Sectional view of the conventional terminal device with external leads inserted

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Terminal plate 2 Shaft member 2a Screw part 2b Shaft top part 2c Shaft hole 2d Inclined hole 2e Washer part 3 Connection piece 4 Knob 5 External lead 5a Core wire

Claims (2)

A shaft member held by the terminal plate and provided with a screw on the outer periphery thereof, a connecting piece electrically connected to the shaft member, and a knob screwed to the shaft member to press-connect external leads. A terminal device,
The shaft member includes a shaft hole opened from the top of the shaft so that an external lead can be inserted in the axial direction, an inclined hole penetrating from the back end of the shaft hole to the outer periphery of the shaft, and an outer peripheral portion of the shaft facing the inclined hole. Having a washer part arranged in
The knob is configured such that an external lead that is screwed to the shaft member from its top side and whose tip protrudes to the outer peripheral portion of the shaft through the shaft hole and the inclined hole can be pressed against the washer portion.
Terminal equipment.   The said inclined hole is a terminal device which comprised the crossing angle with respect to an axial center as an acute angle.