JP4786170B2 - Terminal socket - Google Patents

Description

  The present invention relates to a terminal socket having a release lever for removing a relay mounted on a socket body from the socket body.

  Conventionally, a terminal socket has been used in order to simplify the wiring work for the relay in the control panel and prevent erroneous wiring. This terminal socket is composed of a main body having a terminal plate for connecting a relay terminal and wiring, and a case having a relay mounting portion to which a relay is mounted. The main body includes a terminal insertion hole into which a relay terminal penetrating the case terminal through hole is inserted, a wiring insertion hole into which a wiring penetrating the case wiring through hole and a case tool through hole are inserted. A wiring connection portion including a tool insertion hole into which a tool penetrating the wire is inserted, and a terminal plate storage portion communicating between the terminal insertion hole and the wiring connection portion are formed.

  In such a terminal socket, in order to easily perform maintenance and inspection work, it is necessary to remove the relay from the relay mounting portion with a simple operation.

  For this reason, the conventional terminal socket is provided with a release lever for removing the relay from the relay mounting portion (see, for example, Patent Document 1). FIG. 6 is a view for explaining a release lever of a conventional terminal socket. In the example shown in this figure, the release lever 101 is a molded body having a substantially L-shape on the front, and pivot shafts 102 are projected on the same axis on both side surfaces of the corner. Further, the release lever 101 has an arcuate surface 103 that smoothly pushes up a relay described later on the horizontal portion 101a. Further, a locking claw 104 extends at the upper end of the vertical portion 101b.

  The release lever 101 is pivotally supported by the base by fitting the pivot shaft 102 of the release lever 101 into the shaft holes formed on both sides of the insertion groove of the base through the slit of the case 200. The In particular, as shown in FIG. 6, the release lever 101 rotates not only backward but also forward.

  When the relay is removed from the terminal socket, the release lever 101 is rotated (FIG. 6), and the bottom surface of the relay is pushed up by the circular arc surface 103 of the horizontal portion 101a to be lifted, and the relay is removed.

  However, in this example, the relay cannot be completely removed from the relay mounting portion. That is, when the upper end of the contact portion that contacts the upper end portion of the rear surface of the relay in the rotating release lever 101 and the front end portion of the operation portion that contacts the front surface of the relay draw an arc-shaped locus, When the relay is removed, the relay terminal is subject to rotational force, and the relay terminal is easily deformed. A gap is formed between the front surface of the relay mounted on the relay mounting portion and the front end portion of the operation portion. There is a problem that cannot be completely removed.

  In order to solve this problem, a terminal socket shown in FIG. 7 has been proposed. FIG. 7 shows a case where the height of the wall 150 located opposite to the support side of the release lever in the relay mounting portion of the case is increased. By providing such a wall part 150, the moving direction of the relay to be removed can be regulated. As a result, the relay is smoothly removed.

JP 2002-298715 A (paragraphs 0022, 0024, FIG. 15)

  However, in the example of FIG. 7, since the height of the case becomes high, there is a problem that the socket becomes large.

  The present invention has been made to solve such a problem, and an object of the present invention is to facilitate the removal / removal of the relay with a simple structure and to reduce the size (lower height) of the terminal socket. It is to provide a terminal socket that can be planned.

In order to achieve the above object, according to the first aspect of the present invention, a plurality of terminals protruding from the bottom surface of the relay are inserted into the socket main body to which the relay is mounted so as to be rotatable. A terminal socket provided with a release lever for removing the relay from the socket body by rotating the handle when removed, wherein at least one side inner surface of the release lever is provided on the inner surface of the release lever. A first push- up portion and a second push- up portion that push the relay bottom down to push the relay along the direction away from the center of movement when the relay is removed, and the relay is mounted on the socket body in the height position of the second push-up unit is disposed lower than the height position of the first push-up portion, the release lever when the turning operation, the first push-up portion及The second push-up unit, by pressing the relay bottom away from the center of rotation of the release lever in turn, be configured to pulled out while rotating the relay, when the release lever is operated to rotate, First, the first push-up portion pulls out the terminal closer to the rotation center of the release lever among the plurality of terminals, and then the second push-up portion turns the release lever out of the plurality of terminals. It is characterized by pulling out the terminal farther from the center .

  According to this configuration, as the release lever rotates, the plurality of push-up portions sequentially touch the relay bottom surface and push up the relay. As a result, the relay is easily removed from the socket body without restricting the moving direction of the relay by the wall of the socket body. Further, since the relay is pushed up in multiple stages, the operating force of the lease lever can be reduced as compared with the case where the relay is pushed up in one stage. In addition, since a push-up portion may be provided on the inner surface of the release lever side portion, the structure of the release lever is not complicated. Furthermore, since it is not necessary to provide a high wall in the socket body, the terminal socket can be reduced in size (reduced in height).

The invention according to claim 2 is the terminal socket according to claim 1, wherein the first push-up portion is provided in the horizontal direction of the relay when the relay mounted on the socket body is viewed from the side. It is characterized in that it is located at least closer to the rotation center side of the release lever than the center position.

The invention according to claim 3 is the terminal socket according to claim 1 or 2 , wherein the first push-up portion is formed in a semicircular arc shape.
The invention according to claim 4 is the terminal socket according to any one of claims 1 to 3 , wherein the second push-up portion is inclined downward in a direction away from the rotation center of the release lever. It is a surface.

  According to the present invention, as the release lever rotates, the plurality of push-up portions provided on the inner surface of the release lever side portion contact the bottom surface of the relay in turn and push up the relay. As a result, the relay is easily removed from the socket body without restricting the moving direction of the relay by the wall of the socket body. Further, when pushing up in multiple stages in this way, it becomes possible to reduce the operating force of the release lever as compared to pushing up in one stage. In addition, since a push-up portion may be provided on the inner surface of the release lever side portion, the structure of the release lever is not complicated. Furthermore, since it is not necessary to provide a high wall in the socket body, the terminal socket can be reduced in size (reduced in height).

  Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is an external view of a main part of a terminal socket according to the present invention. The terminal socket according to the present invention is provided with a case 10 having a relay mounting portion 14 formed on the upper surface, a main body (not shown) housed in the case 10 from the lower surface side, and a turnable side surface of the case 10. The release lever 11 is formed.

  The case 10 is a hollow housing that is open at the back. FIG. 2 is a diagram showing an example in which a plurality of terminal sockets according to the present invention are connected and used. As shown in FIG. 2, a plurality of terminal sockets of the present invention can be used by being detachably attached to a support rail (DIN rail) 18. In the terminal socket in the example shown in this figure, a connection penetration portion 15 for an output terminal is formed on the upper side of the front surface of the case 10. Each connection through portion 15 has the same shape. Moreover, as shown in this figure, the connection through portion 15 may be constituted by a wiring through hole 15a and a tool through hole 15b. A wiring to be connected to each output terminal 31 (see FIG. 5) of the relay 30 (see FIG. 5) mounted on the upper surface of the case 1 passes through the wiring through hole 15a. In addition, a tool for operating a clamp spring of a terminal plate that sandwiches the wiring passes through the tool through hole 15b.

  The connection penetration 15 corresponds to the output terminal 31 of each pole in the relay 30. In other words, the relay is provided with a total of three output terminals 31 for each pole: normally closed (NC), normally open (NO), and common. Therefore, four-pole type relays are provided with four rows of output terminals 31 in the left and right direction as a set of three in the upper and lower directions, and two rows of outputs in the left and right direction in the two-pole type relay as one set. A terminal 31 is provided. As the relay socket according to this embodiment, one using a two-pole relay 30 is shown.

  A relay placement portion 14 is formed below the connection through portion 15 on the front surface of the case 10. A relay is mounted on the relay mounting portion 14 via the release lever 11. A terminal through hole 16 is formed in a portion of the relay mounting portion 14 that faces the bottom surface of the relay. An output terminal 31 and a coil terminal 32 (see FIG. 5) projecting from the bottom surface 30A (see FIG. 5) of the relay 30 pass through the terminal through-hole 16.

  As shown in FIG. 2, the release lever 11 is usually provided below the relay placement portion 14. This is because the operator can easily perform the operation when removing the relay 30.

  On the front surface of the case 10, further below the relay placement portion 14, connection through portions 17 for the coil terminals 32 are formed at two locations on the left and right. The connection through portion 17 includes a lower wiring through hole 17 a and an upper tool through hole 17 b, contrary to the connection through portion 15. The wiring through hole 17 a has a coil terminal 32 of the relay 30. The wiring to be connected to the through hole penetrates, and the tool for operating the clamp spring penetrates the tool through hole 17b.

  FIG. 3 is a view showing an example of a release lever according to the terminal socket of the present invention. As shown in FIG. 1, the release lever 11 is a molded body having a substantially L-shaped front surface. A boss portion 11a is formed in the vicinity of the corner, and the release lever 11 is fitted to the relay mounting portion 14 by externally fitting the boss portion 11a to the shaft portion 12 protruding to the side surface side in the relay mounting portion 14. In FIG. 1, the support is movably supported in the directions of arrows M and N (see FIG. 1).

  In the release lever 11, projections 11 b are formed on the inner surfaces of the left and right side portions 11 </ b> A and 11 </ b> A at the middle portion of the lower portion of the inner surface in the left-right direction. The protruding portion 11b is configured to come into contact with the bottom surface 30A of the relay 30 when the relay 30 attached to the relay mounting portion 14 is detached.

  In the release lever 11, an abutting member 11c is formed between the left and right side portions 11A and 11A at an intermediate position between the side portions 11A and 11A in the vertical direction. The contact member 11 c is in contact with the back surface of the relay 30 placed on the relay placement unit 14. In addition, an operation portion 11B (see FIG. 3) for rotating the release lever 11 is formed on the upper portions of the side portions 11A and 11A.

  FIG. 4 is a view showing the inner surface of the side portion of the release lever in the terminal socket of the present invention. With reference to FIG. 4, the structure of the protrusion part 11b is further explained in full detail. The protrusion 11b is provided with a first push-up portion 50 and a second push-up portion 51 that push the relay 30 in contact with the relay bottom surface 30A when the relay 30 is removed. The first push-up portion 50 is formed in a semicircular arc shape that can contact the relay bottom surface 30A with a line, and the second push-up portion 51 can touch the relay bottom surface 30A by a surface. The inclined surface has a downward slope in a direction away from the shaft portion 12. The height position of the second push-up portion 51 is disposed lower than the height position of the first push-up portion 50. Accordingly, when the relay 30 is removed, the relay 30 is pushed up by the first push-up unit 50, and then the relay 30 is pushed up by the second push-up unit 51. Thus, the two-stage push-up can be performed, and the relay 30 can be easily removed. It becomes possible. In addition, the relay 30 can be removed with a slight force compared to the case of pushing up in one step.

  Hereinafter, a mechanism for removing and inserting the relay will be described with reference to FIG. FIG. 5 is a conceptual diagram for explaining a relay removal mechanism. 5, (a) to (d) are diagrams in which the upper diagram shows the relationship between the relay 30 and the relay mounting portion 14, and the lower diagram is an enlarged view showing the relationship between the relay bottom surface 30A and the projection 11b. is there.

In the state shown in FIG. 1, the release lever 11 is in a closed state. In this state, the relay 30 placed on the relay placement portion 14 is in contact with the first push-up portion 50 of the protruding portion 11b (FIG. 5A).

  When the release lever 11 rotates in the M direction around the shaft portion 12 in a state where the relay 30 is in contact with the first push-up portion 50 of the protrusion 11b, the first push-up portion 50 of the protrusion 11b becomes the relay bottom surface 30A. Press. As a result, as shown in FIG. 5B, the relay 30 rotates and the coil terminal 32 is pulled out from the relay mounting portion 14.

  Further, when the release lever 11 rotates in the M direction about the shaft portion 12, the relay 30 further rotates and is pulled out from the relay placement portion 14 and comes into contact with the second push-up portion 51 of the projection portion 11b ( FIG. 5 (c)).

When the release lever 11 rotates in the M direction around the shaft portion 12 in a state where the relay 30 is in contact with the second push-up portion 51 of the protrusion 11b, the second push-up portion 51 presses the bottom surface of the relay. As a result, as shown in FIG. 5D, the output terminal 31 is pulled out from the relay mounting portion 14, and the relay 30 is completely pulled out from the relay mounting portion 14. By pushing up the relay 30 in two stages in this way, the relay 30 can be completely pulled out from the relay mounting portion 14 without restricting the moving direction of the relay 30 to be removed.

(Other matters)
In the example shown in FIG. 5, the relay 30 is removed from the side where the coil terminal 32 is provided toward the side where the output terminal 31 is provided, but from the side where the output terminal 31 is provided. You may make it pull out toward the side in which the coil terminal 32 is provided. However, since the output terminal 31 has a larger number of terminals than the normal coil terminal 32, the relay bottom surface 30A on the output terminal 31 side is more firmly placed on the socket body than the relay bottom surface 30A on the coil terminal 32 side. . Therefore, it is preferable to remove the relay 30 as shown in FIG. 5 because the relay 30 is smoothly removed.

  In the example of FIG. 4, the first push-up part 50 and the second push-up part 51 are formed as a single protrusion 11 b, but the first push-up part 50 and the second push-up part are provided as separate protrusions. 51 may be formed separately. In other words, the first push-up part 50 and the second push-up part 51 may be formed separately.

  In the example of this figure, the relay 30 is removed in two stages by the two push-up parts 50 and 51. However, the relay 30 is removed in multiple stages by three or more push-up parts. May be. In this case, the plurality of push-up portions are gradually lowered in height as they move away from the shaft portion 12 (the rotation center of the release lever) in a state where the relay 30 is mounted on the socket body. It is necessary to arrange in If the height position is the same, it cannot be pushed up in multiple stages.

  Further, in the example of this figure, the first push-up portion 50 is a line, and the second push-up portion 51 is a surface, which is in contact with the relay bottom surface 30A, but can be in contact with the relay bottom surface 30A. If it is a thing, it is not limited to this structure. That is, even if the first push-up portion 50 and the second push-up portion 51 are both in contact with the relay bottom surface 30A with lines or surfaces, the first push-up portion 50 is the surface and the second push-up portion 51 is. May be in contact with the relay bottom surface 30A. Moreover, you may comprise with a point instead of a line or a surface. In addition, if the inclination angle of the inclined surface of the second push-up portion 51 is adjusted as appropriate, the relay 30 can be pulled out closer to a straight posture from an oblique posture.

  In the example of FIG. 3, the reinforcing member formed integrally with the protruding portion 11 b provided on the side portions 11 </ b> A and 11 </ b> A is provided between the side portions of the release lever 11 in parallel with the front surface of the relay mounting portion 14. 11d is provided. This is provided in order to give the release lever 11 strength. Therefore, the reinforcing member 11d does not need to be formed integrally with the protruding portion 11b, and may be formed separately.

  INDUSTRIAL APPLICABILITY The present invention can be suitably implemented in a terminal socket provided with a release lever that allows a relay mounted on the socket body to be removed from the socket body.

It is an external view of the principal part of the terminal socket concerning this invention. It is a figure which shows the example which connects and uses multiple terminal sockets of this invention. It is a figure which shows an example of the release lever concerning the terminal socket of this invention. It is a figure which shows the inner wall of the side surface of the release lever in the terminal socket of this invention. It is a figure explaining the mechanism in which the release lever in the terminal socket of this invention pulls out and removes a relay from a mounting part. It is a figure for demonstrating the release lever of the conventional terminal socket. It is a figure for demonstrating the release lever of the other conventional terminal socket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Case 11 Release lever 12 Shaft part 14 Relay mounting part 15 Connection through hole 15a Wiring through hole 15b Tool through hole 16 Terminal through hole 17 Connection through hole for coil terminal 18 Support rail 30 Relay 30A Relay bottom face 31 Output Terminal 32 Coil Terminal 50 First Push-up Part 51 Second Push-up Part 101 Release Lever 102 Rotating Shaft 103 Arc Surface 104 Locking Claw 150 Wall Part 200 Case

Claims (4)

A plurality of terminals protruding from the bottom of the relay are inserted, so that the socket body can be rotated. When the relay is removed, the relay is removed from the socket body by rotating the relay. A terminal socket with a release lever,
A first push- up portion that pushes up the relay by pressing the bottom surface of the relay when the relay is removed along the direction away from the rotation center of the release lever on the inner surface of at least one of the both sides of the release lever And the second push- up portion, and in a state where the relay is mounted on the socket body, the height position of the second push-up portion is arranged lower than the height position of the first push-up portion,
When the release lever is rotated, the first push-up portion and the second push-up portion are pulled out while rotating the relay by sequentially pressing the bottom surface of the relay in a direction away from the rotation center of the release lever. Configured to take off,
When the release lever is rotated, the first push-up unit first pulls out the terminal closer to the rotation center of the release lever from the plurality of terminals, and then the second push-up unit selects the plurality of terminals. A terminal socket characterized by pulling out the terminal farther from the rotation center of the release lever among the terminals. The first push-up portion is located at least closer to the rotation center side of the release lever than the center position in the left-right direction of the relay when the relay mounted in the socket body is viewed from the side. The terminal socket according to 1. The first push-up portion is formed in a semicircular arc, according to claim 1 or 2, wherein the termination sockets. The terminal socket according to any one of claims 1 to 3, wherein the second push-up portion is an inclined surface having a downward slope in a direction away from the rotation center of the release lever .