JP4880640B2 - socket - Google Patents

Description

  The present invention relates to a socket used to connect an external wiring wire to a connection terminal drawn out of an electrical device such as a push button switch or a display device mounted on a panel of a control panel.

  Conventionally, as a means for connecting an electric wire to a connection terminal of an electric device, a means for connecting the electric wire directly to the connection terminal by soldering, a connection terminal is used as a wrapping terminal, and the electric wire is wound around the connection terminal by using a lapping machine. There are many means such as means, connecting terminal as a screw terminal, means for connecting an electric wire to the connecting terminal with a screw, and means for crimping and connecting a receptacle to the electric wire and fitting the receptacle to the connecting terminal to connect. However, small-sized devices often use connection means by soldering.

  However, the connecting means by soldering may cause the flux used for soldering to enter the equipment and cause contact failure, or the resin case of the electrical equipment may be deformed or melted by the heat during soldering. Therefore, it was necessary to perform connection work with great care. In addition, it was necessary to remove the solder during maintenance or replacement of the equipment, and workability was poor. Furthermore, the connection means by wrapping requires a dedicated tool, and is unusable in places where wiring such as a control panel is dense. In addition, although the connection means by screwing is easy to connect and separate wiring, it is necessary to take a large space for attaching the screw and cannot be used for a small apparatus.

  In order to eliminate such inconvenience, Patent Document 1 discloses a means for connecting an electric device and a wiring electric wire using a socket as a means for reliable wiring connection by a simple operation.

  10 to 12 show a configuration of a conventional socket used for connecting an electric wire to the electric device disclosed in Patent Document 1. FIG.

  The socket 3 shown in FIGS. 10 to 12 is used to connect a wiring wire to the connection terminal 14 of the electrical device 1 by being coupled to the electrical device 1. For this reason, the socket 3 includes a terminal block 30 connected to the electrical device 1. The terminal block 30 includes a terminal insertion hole 37 into which the connection terminal 14 of the electric device 1 is inserted at one end side, and a wire insertion hole 38 into which the external wiring electric wire 22 is inserted at the other end side. The connection fitting 35 for electrically connecting the connection terminal 14 of the electric device 1 and the electric wire 22 arranged inside the terminal block 30 is inserted from the terminal contact portion 35a with respect to the connection terminal 14 and the electric wire insertion hole 38. An electric wire contact portion 35b with respect to the core wire 22a of the electric wire is formed. The terminal block 30 further incorporates an elastic clamp 36 made of a leaf spring that presses the inserted electric wire 22 to the electric wire contact portion 35b and presses the inserted electric device to the connection terminal of the electric device. A release button 41 is provided for pressing and deforming the metal fitting 36 to elastically displace the metal fitting 36 in the clamping release direction.

  When the electric wire 22 is connected to the socket 3 configured in this way, the elastic clamping bracket 36 is moved by pushing the release button 41 pushed out of the terminal block 30 into the terminal block 30 by the elastic clamping bracket 36. The connecting fitting 35 is moved away from the electric wire contact portion 35b by being elastically displaced in the nipping release direction, the electric wire 22 is inserted from the electric wire insertion hole 38, and the tip end of the electric wire 22 is connected to the electric wire contact portion 35b of the connecting fitting 35. Push it to the opposite position. Thereafter, when the pushing operation of the release button 41 is released, the inserted electric wire 22 is pressed and contacted with the connection fitting 35 by the elastic force of the elastic holding fitting 36 (see FIG. 12). In this way, the socket 3 to which the electric wire 22 is connected is connected and coupled to the electric device 1, and the connection terminal 14 is inserted into the terminal insertion hole 37 of the terminal block 30, thereby connecting the electric device 1 through the socket 3. An electric wire 22 of external wiring can be connected to the terminal 14.

If such a socket 3 is used, it becomes possible to reliably connect the electric wire for wiring to the electric device by a simple operation.
JP 2001-160431 A

  However, in such a conventional socket, contact portions 35a and 35b of the connection terminal 14 provided on the connection fitting 36 of the terminal block 30 and the external electric wire 22 are formed on two opposing surfaces of the connection fitting 35. Since the elastic clamping metal fitting 36 is incorporated between them, the size reduction of the connection metal fitting 35 is restricted by the elastic clamping metal fitting 36 and the like, and there is a problem that the socket 3 cannot be made small.

  In view of such a problem, the present invention provides a socket in which the size of a connection fitting incorporated in a terminal block can be freely determined without being limited by an elastic clamping fitting in order to obtain a smaller socket. It is a problem to provide.

  In order to solve the above problems, the present invention has a terminal insertion hole into which a connection terminal of an electric device is inserted on one end side, and an electric wire insertion hole into which an electric wire for external wiring is inserted on the other end side. A terminal block and a holder for coupling and coupling the terminal block to the electrical device, and in a substantially rectangular tube shape for electrically connecting the connection terminal of the electrical device and the electric wire inside the terminal block. The terminal contact which arrange | positions the formed box-shaped connection metal fitting and contacts the connection terminal inserted from the said terminal insertion hole in the 1st surface parallel to the said connection terminal and electric wire insertion direction of this box-shaped connection metal fitting. Forming a wire contact portion that comes into contact with the wire inserted from the wire insertion hole on a second surface orthogonal to the surface, and further, inserting the inserted wire into the box-shaped fitting. Elastic clamping comprising a leaf spring that is pressed against and clamped to the wire contact portion With incorporation of the ingredients and is characterized in that a release button to elastically displaced clamping release direction by pressing deforming the resilient clamping bracket to said terminal block.

  In the present invention, the box-shaped connection fitting is made of a conductive elastic material, and an elastic pressing piece for pressing the connection terminal of the inserted electric device to the connection terminal contact portion is integrated with the box-type connection fitting. It is good to make it form.

  According to this invention, in the socket for connecting the connection terminal of the electrical device to the external wiring, the connection terminal is respectively provided on the two mutually orthogonal surfaces of the connection fitting for connecting the connection terminal of the electrical device and the external wiring wire. Since the contact terminal contact part and the electric wire contact part that contact the electric wire are formed, the distance between the elastic holding metal parts that press and hold the inserted electric wire against the electric wire contact part is stored. Since it can be set relatively freely in accordance with this, the effect of facilitating the miniaturization of the socket can be obtained.

  Next, embodiments of the present invention will be described with reference to the drawings.

1 to 9 show an embodiment of the present invention. 1A and 1B are perspective views showing the appearance of a socket according to the present invention. FIG. 1A shows a state in which the socket is coupled to an electrical device, and FIG. 1B shows a state in which the socket is separated from the socket electrical device. 2 is an exploded perspective view of the socket of the present invention, FIG. 3 is a plan view of the socket of the present invention as viewed from the insertion end side of the wiring wire, and FIG. 4 is taken along the line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. 3, FIG. 6 is a perspective view showing a box-type connection fitting and an elastic clamping fitting used in the socket of the present invention, and FIG. FIG. 8 is a perspective view showing a state in which a connection terminal and an electric wire are inserted and connected to the connection fitting assembly, and FIG. 9 is an electric diagram showing the electrical connection to the socket according to the present invention. It is explanatory drawing of the connection operation | work of the connecting terminal of an apparatus, and the electric wire for wiring.

  In FIG. 1 to FIG. 9, reference numeral 5 denotes a socket that is inserted into the connection terminal 14 of the electric device 1 and is coupled to the electric device 1.

  As shown in FIG. 2, the socket 5 includes a case 53 having a connection terminal insertion hole 53a on the insertion end side (upper side in FIG. 2) of the connection terminal, and a wire on the wire connection end side (lower side in FIG. 2). A cover 54 having an insertion hole 54a (see FIG. 3) is fitted together to be integrated, and a terminal block 52 configured by arranging a connection fitting assembly 55 therein is provided. A holder 51 incorporating a lock lever 51a for coupling and coupling to the electrical device 1 is connected to the connection terminal insertion end side of the terminal block 52 by engaging the mounting leg 51b with the engagement protrusion 53b on the side wall of the case 53. The

  Moreover, the release button 58 which cancels | releases the clamping state of the electric wire inserted and clamped by the terminal block 52 is mounted | worn with the electric wire insertion end side of the cover 54 of the terminal block 52 (refer FIG. 3 and FIG. 4).

  The external appearance of the socket 5 configured in this way is as shown in FIG. 1, and the internal configuration is as shown in FIGS.

  As shown in detail in FIG. 6, the connection fitting assembly 55 accommodated in the terminal block 52 is a box-type connection fitting for electrically connecting the connection terminal of the inserted electrical device and an external wiring wire. An elastic clamping metal member 57 formed by an elastic plate for holding and fixing the inserted electric wire to the connection metal fitting 56 is incorporated in the device 56.

  As shown in FIG. 6, the box-shaped connection fitting 56 is formed in a substantially square cylindrical shape by a conductive elastic material. The connection terminal contact portion for contacting the connection terminal of the inserted electrical equipment to the window portion provided on the first surface 56a parallel to the connection terminal of the box-shaped connection fitting 56 and the insertion direction of the electric wire (vertical direction in FIG. 6). 56b and a connection terminal pressing piece 56c formed by cutting and raising are provided.

  Moreover, let the 2nd surface 56d orthogonal to the said 1st surface 56a of the box-shaped connection metal fitting 56 be an electric wire contact part which the core wire of the inserted electric wire contacts.

  The elastic clamping metal member 57 is formed by bending a strip-shaped elastic plate into a substantially U shape, and includes a regulating piece 57d that rises vertically to the side of the lower base side 57c. The upper side 57a formed by bending at an acute angle so as to be elastically displaceable from the tip of the vertical side 57b serves as a holding piece for pressing and holding the inserted electric wire.

  As shown in FIG. 7, the elastic holding metal fitting 57 configured in this manner is inserted into the box-shaped connection metal piece 56 by being pushed in from the lower opening until the curved portion of the holding piece 57 a slightly protrudes upward. A simple connection fitting assembly 55 is assembled. Among the box-shaped connection fittings 56, the elastic clamping metal pieces 57 have an outer end surface 57e of the regulating piece 57d that contacts the inner surface of the second surface 57d of the box-type connection fitting 56, and an outer surface of the vertical piece 57b that is the box-type connection fitting. The inner surface of the fourth surface 56e facing the second surface 56e is elastically displaced inward and is locked in the box-shaped connecting bracket 56 by the elastic force of the vertical piece 57b. And the elastic clamp fitting 57 are integrally formed.

  A required number of the connection fitting assemblies 55 assembled in this way are mounted in the case 53 shown in FIG. The terminal block 52 is configured by fitting the cover 54 into the case 53 to which the connection fitting assembly 55 is attached. The cover 54 is further provided with a release button 58 that releases the electric wire before and after being coupled to the case 53. The terminal block 52 is assembled in this way, and the coupling holder 51 provided with the lock lever 51a is attached to the terminal block 52, thereby completing the socket 5 (see FIG. 1B).

  When the electrical device 1 such as a push button switch is coupled to the socket 5, the connection terminal 14 of the electrical device 1 is inserted from the connection terminal insertion hole 53 a of the socket 5, and the holder 51 is connected to the electrical device 1. The socket 5 is mechanically connected so as not to be detached, and is coupled (locked) by a lock lever 51a (see FIG. 1A). By inserting an external wiring wire into the wire insertion hole 54 a of the socket 5, the wire 22 can be connected to the socket 5.

  As shown in FIG. 8, the connection terminal 14 and the electric wire 22 are connected to each other by connecting the connection terminal 14 of the electric device 1 and the electric wire 22 for external wiring to the connection metal fitting assembly 55 in the socket 5. They are connected to each other through the assembly 55.

  Next, the connection work of the connection terminal 14 of the electric device 1 and the external wiring electric wire 22 to the socket 5 will be described with reference to FIG.

  The connection terminal pressing piece 56c of the box-shaped connection fitting 56 of the connection fitting assembly 55 is connected to the connection terminal contact portion 56b as shown by a solid line in FIG. 9B before the connection terminal 14 of the electrical device 1 is inserted. It is in the position of a narrow interval to. When the connection terminal 14 is inserted into the connection fitting assembly 55, the connection terminal pressing piece 56c is elastically displaced by the connection terminal 14 and is expanded to the position 56c 'shown by a dotted line, and the connection terminal 14 is connected to the connection terminal contact portion 56b. Press to the side. Thereby, the connection terminal 14 is press-contacted with the connection metal fitting 56, and is electrically connected favorably.

  Prior to inserting and connecting the electric wire 22 for external wiring, the clamping release button 58 is pushed up by the clamping piece 57a of the elastic clamping bracket 57 of the connection bracket assembly 55 as shown by the solid line in FIG. In position. The tip of the holding piece 57 a of the elastic holding metal fitting 57 is in press contact with the electric wire contact surface 56 d of the inner surface of the second surface of the connection metal fitting 56.

  When inserting the electric wire 22, the clamping release button 58 is pushed into the connection fitting assembly 55 to elastically displace the clamping piece 57 a and expand it to the position 57 a ′ shown by the dotted line. As a result, a gap sufficient to insert the electric wire 22 is generated between the electric wire contact surface 56d of the connection fitting 56 and the holding piece 57a. In this manner, when the wire 22 is inserted from the wire insertion hole 54a when the space between the connection fitting 56, the wire contact surface 56d, and the sandwiching piece 57a is widened, the core wire 22a of the wire 22 smoothly moves into the connection fitting assembly 55. When the pressing operation of the clamp release button 58 is stopped when the tip of the clamp pin is in contact with the base side 57c of the elastic clamp, the clamp piece 57a of the elastic clamp 57 is indicated by a one-dot chain line by the elastic restoring force. Returning to the position 57a ", the core wire 22a of the electric wire 22 is pressed against the electric wire contact surface 56d, so that the core wire 22a is in pressure contact with the electric wire contact surface 56d of the connection fitting 56, and is electrically connected well. When the edge of the tip of the piece 57a contacts the outer circumference of the core wire 22a at an acute angle from above, the wire 22 is sandwiched between the connection fittings 56 so as not to be pulled out.

  In this way, the connection terminal 14 of the electric device inserted into the connection fitting assembly 55 and the external wiring wire 22 are electrically connected to the connection fitting 56, respectively, and are mutually connected via the connection fitting 56. The electric wires 22 are electrically connected, and the electric wires 22 are clamped and fixed in the connection fitting 56 so as not to be easily pulled out from the outside by the clamping pieces 57a.

  Further, in the case where the external wiring wire is a stranded wire, it is flattened by being pressed by the sandwiching pieces 57a. However, as shown in FIG. 9C, the fourth surface 56f of the connection fitting is used. The inner surface and the restricting piece 57d provided on the sandwiching metal member 57 can prevent the expansion from being restricted by the restriction piece 57d.

  As described above, the socket for connecting the electrical device of the present invention configured as described above and external wiring is provided with a box-shaped connection fitting in the socket, and two orthogonal surfaces of the fitting are arranged. Since there are connection terminal contact parts that contact the connection terminals of electrical equipment and wire contact parts that contact external wires, respectively, determine the size of the clamping metal fittings regardless of the size of the connection metal fittings. Therefore, it is easy to make the connection fitting small, and the socket can be made small.

It is a perspective view which shows the socket of the Example of this invention, (a) shows the combined state with an electronic device, (b) shows the state isolate | separated from the electric equipment. It is a perspective view which decomposes | disassembles and shows the socket of the Example of this invention. It is the top view seen from the electric wire insertion end side of the socket of the Example of this invention. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which follows the VV line of FIG. It is a perspective view which decomposes | disassembles and shows the connection metal fitting assembly used for this invention. It is a perspective view which shows the structure of the connection metal fitting used for this invention. It is a perspective view which shows the state which connected the connection terminal and the electric wire to the connection metal fitting of this invention. It is sectional drawing explaining the connection operation | work of the connecting terminal and electric wire of this invention. It is a perspective view which shows the external appearance of the conventional socket. It is a perspective view which decomposes | disassembles and shows the terminal block of the conventional socket. It is a fragmentary sectional view which shows the connection state of the conventional socket.

Explanation of symbols

1: Electrical device 14: Connection terminal 22: External wiring wire 5: Socket 51: Holder 52: Terminal block 53: Case 53a: Connection terminal insertion hole 54: Cover 54a: Electric wire insertion hole 55: Connection fitting assembly 56: Box-shaped connection bracket 56b: Connection terminal contact portion 56d: Electric wire contact portion 57: Elastic clamping bracket

Claims (2)

  A terminal block having a terminal insertion hole into which a connection terminal of an electric device is inserted on one end side and an electric wire insertion hole into which an electric wire for external wiring is inserted on the other end side, and this terminal block to the electric device A holder for connecting and coupling, and a box-shaped connection fitting formed in a substantially rectangular tube shape for conductively connecting the connection terminal of the electric device and the electric wire inside the terminal block, A terminal contact portion that contacts the connection terminal inserted from the terminal insertion hole is formed on a first surface parallel to the insertion direction of the connection terminal and the electric wire of the box-shaped connection fitting, and a second orthogonal to the surface. A leaf spring that forms an electric wire contact portion that contacts an electric wire inserted from the electric wire insertion hole, and that presses the inserted electric wire against the electric wire contact portion in the box-shaped connection fitting Incorporating an elastic clamping bracket consisting of Socket resilient clamping bracket is pressed against deformation, characterized in that a release button to elastically displaced clamping release direction.   2. The socket according to claim 1, wherein the box-shaped connection fitting is made of a conductive elastic material, and an elastic pressing piece that presses a connection terminal of the inserted electric device against the terminal contact portion is provided as the box-type connection fitting. A socket formed integrally with the socket.

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