JP3159469U - Terminal block - Google Patents

Abstract

Provided is a terminal block that can be quickly connected by selecting an insertion point of an electric wire while having a simple structure. One leaf spring 30 having a substantially U-shape is disposed in an internal space of a housing 10 and a first insertion hole 12a is provided in an upper wall portion 12 facing a first arm portion 30b of the leaf spring 30. The end portion of the electric wire inserted into the internal space through the first insertion hole 12a is brought into pressure contact with the terminal fitting 20 by the urging force acting in the direction approaching the first insertion hole 12a of the leaf spring 30. A second insertion hole 14 a is provided in the front wall portion 14 facing the second arm portion 30 c of the leaf spring 30, and the end of the electric wire inserted into the internal space through the second insertion hole 14 a is the second portion of the leaf spring 30. The terminal fitting 20 is pressed into contact with the urging force acting in the direction approaching the insertion hole 14a. [Selection] Figure 2

Description

  The present invention relates to a one-touch connection type terminal block that can achieve electric wire connection without using screws.

  Conventionally, as a terminal block for connecting an electric wire directly attached to a printed circuit board, by inserting an electric wire into an electric wire insertion hole provided in an insulating main body, a terminal spring is pressed into a terminal metal fitting by pressure contact of a leaf spring accommodated in the main body One-touch connection type terminal blocks that are configured to be connected with electric wires by one touch have been put to practical use (see, for example, Patent Documents 1 and 2).

JP 2003-197288 A JP 2006-103263 A

  However, in the terminal blocks described in Patent Documents 1 and 2 described above, only one wire insertion hole is provided in one housing, and therefore, the number of wires to be inserted is limited to one. Therefore, for example, when a sufficiently large space cannot be secured around the wire insertion hole, it may be difficult to insert the wire. In addition, there is a problem in that the length of the electric wire may have to be increased because the distance is greatly separated depending on the positional relationship with the device to which the electric wire is connected. On the other hand, a configuration in which a plurality of electric wire insertion holes are provided in the terminal block and a leaf spring is provided for each electric wire insertion hole is also conceivable, but there is a concern that the structure becomes complicated and the physique increases in size.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a terminal block that allows one-touch connection by selecting an insertion position of an electric wire while having a simple structure.

  Hereinafter, each means suitable for solving the above-described problems will be described with additional effects and the like as necessary.

(Claim 1) In a terminal block comprising an insulating casing having an internal space surrounded by a peripheral wall portion, and one terminal fitting disposed in the internal space of the casing,
One leaf spring having a substantially U-shape consisting of a central curved portion and a first arm portion and a second arm portion provided on both sides thereof is disposed in the internal space of the housing,
A first insertion hole that penetrates the outside and the internal space is provided at a position facing the first arm portion of the leaf spring in the peripheral wall portion of the housing, and is inserted into the internal space through the first insertion hole. An end portion of the electric wire is configured to be pressed against the terminal fitting by an urging force acting in a direction approaching the first insertion hole of the leaf spring;
A second insertion hole penetrating the outside and the internal space is provided at a position facing the second arm portion of the leaf spring in the peripheral wall portion of the housing, and is inserted into the internal space through the second insertion hole. The terminal block is configured such that an end portion of the electric wire is pressed against the terminal fitting by an urging force acting in a direction approaching the second insertion hole of the leaf spring.

  According to the first aspect of the present invention, the first insertion hole provided at the position facing the first arm portion of the leaf spring and the first arm provided at the position facing the second arm portion in the peripheral wall portion of the housing. Two insertion holes, two insertion holes, are provided, and the end portion of the electric wire inserted into the internal space through each insertion hole is pressed against the terminal fitting by a biasing force acting in a direction approaching each insertion hole of the leaf spring. The

  Therefore, according to the terminal block of the present invention, it is possible to select the insertion position of the electric wire and make a one-touch connection with a simple structure. In other words, it has a simple structure in which one terminal fitting and one leaf spring are accommodated inside the housing, but the two insertion holes with different arrangement positions are selectively used according to the usage environment to insert the electric wire. Can be connected with one touch. For example, when another device is arranged around the first insertion hole and there is not enough space for the electric wire connection, but there is enough space around the second insertion hole, the electric wire is inserted into the second insertion hole. If is inserted, the wire connection work can be easily performed. If the first insertion hole is closer to the first insertion hole than the second insertion hole, the wire is inserted into the first insertion hole. Connection can be achieved.

(Claim 2) The first arm portion and the second arm portion of the leaf spring are formed symmetrically with respect to a center line passing through the center of the curved portion,
The terminal block according to claim 1, wherein the first insertion hole and the second insertion hole are provided in a line-symmetric position with respect to the center line.

  According to the second aspect of the present invention, the first arm portion and the second arm portion of the leaf spring are formed symmetrically with respect to the center line passing through the center of the bending portion, and the first insertion hole and the second arm portion are formed. Since the insertion hole is provided at a line symmetrical position with respect to the center line, when the end of the electric wire is inserted into the internal space through each insertion hole, a biasing force of substantially the same size is generated in the leaf spring, The end of the electric wire can be securely pressed against the terminal fitting.

  (Claim 3) The terminal block according to claim 2, wherein the electric wire insertion direction of the first insertion hole and the electric wire insertion direction of the second insertion hole are orthogonal to each other.

  According to the third aspect of the present invention, the electric wire insertion direction of the first insertion hole and the electric wire insertion direction of the second insertion hole are orthogonal to each other. The two insertion holes that are different by 90 degrees can be selectively used according to the use environment to achieve electric wire connection.

(Claim 4) The peripheral wall portion of the housing includes a first wall portion in which the first insertion hole is provided, and a second wall portion in which the second insertion hole is provided,
4. The terminal block according to claim 2, wherein the first wall portion and the second wall portion are line-symmetric with respect to a center line of the leaf spring. 5.

  According to the invention described in claim 4, the peripheral wall portion of the housing has a first wall portion in which the first insertion hole is provided and a second wall portion in which the second insertion hole is provided, and the center of the leaf spring Since the first wall portion and the second wall portion are line-symmetric with respect to the wire, when the end portion of the electric wire is inserted into the internal space through each insertion hole, the leaf spring is substantially the same. An urging force of a magnitude is generated, and the end of the electric wire can be reliably pressed against the terminal fitting. For example, it is good also as a structure which provides a 1st wall part in the upper surface side of a housing, and provides a 2nd wall part in the front side or back surface side of a housing.

(Claim 5) A first release button for releasing the pressure contact of the electric wire by pressing the first arm portion of the leaf spring in a direction opposite to the approaching direction to the first insertion hole,
A second release button for releasing the pressure contact of the electric wire by pressing the second arm portion of the leaf spring in a direction opposite to the approaching direction to the second insertion hole. The terminal block according to any one of 1 to 4.

  According to the fifth aspect of the present invention, the first arm of the leaf spring is pressed in the direction opposite to the approaching direction to the first insertion hole by pressing the first release button. Can be easily released. Further, by pressing the second release button, the second arm portion of the leaf spring is pressed in the direction opposite to the approaching direction to the second insertion hole, so that the pressure contact of the electric wire can be easily released.

  According to the present invention, it is possible to make a one-touch connection by selecting an insertion position of an electric wire while having a simple structure. In other words, it has a simple structure in which one terminal fitting and one leaf spring are accommodated inside the housing, but the two insertion holes with different arrangement positions are selectively used according to the usage environment to insert the electric wire. Can be connected with one touch. For example, when another device is arranged around the first insertion hole and there is not enough space for the electric wire connection, but there is enough space around the second insertion hole, the electric wire is inserted into the second insertion hole. If is inserted, the wire connection work can be easily performed. If the first insertion hole is closer to the first insertion hole than the second insertion hole, the wire is inserted into the first insertion hole. Connection can be achieved.

It is a figure which shows the terminal block of one Embodiment of this invention, (a) is a top view of a terminal block, (b) is a front view, (c) is a right view. It is a figure which removes the side plate of a terminal block and shows an internal structure. It is a top view which shows a terminal metal fitting. (A) is a top view which shows a leaf | plate spring, (b) is an A line arrow directional view. It is a figure which shows the state which inserted and connected the edge part of the electric wire to the 1st insertion hole of a terminal block. It is a figure which shows the state which inserted and connected the edge part of the electric wire to the 2nd insertion hole of a terminal block. It is a figure which shows a mode that the electric wire inserted and connected to the 1st insertion hole is cancelled | released by pressing of a 1st cancellation | release button. It is a figure which shows a mode that the electric wire inserted and connected to the 2nd insertion hole is cancelled | released by the press of a 2nd cancellation | release button.

  Hereinafter, an embodiment embodying a terminal block of the present invention will be described with reference to the drawings. 1A and 1B are diagrams showing a terminal block 1 according to an embodiment of the present invention, in which FIG. 1A is a plan view of the terminal block 1, FIG. 1B is a front view, and FIG. FIG. 2 is a diagram showing the internal structure by removing the side plate 40 of the terminal block 1. FIG. 3 is a plan view showing the terminal fitting 20. FIG. 4A is a plan view showing the leaf spring 30, and FIG.

  The terminal block 1 is a terminal block that is directly attached to a printed circuit board for connection of electric wires. As shown in FIG. 1, the number of terminals (4 in this embodiment) is insulated according to the number of electric wires to be connected. The housing 10 includes a side plate 40 attached to the right side surface of the housing 10 connected to the right end, and a spacer 50 attached to the left side surface of the housing 10 connected between the adjacent housings 10 and the left end.

  The casing 10 is formed in a box shape having a substantially rectangular shape in a side view as a whole by molding an insulating resin material such as PA66 (polyamide 66) or PBT (polybutylene terephthalate) with a mold. In the housing 10, one side (left side) of both side surfaces is closed by the side wall portion 17, and the other side (right side) surface is opened to form an internal space 10a. As shown in FIG. 2, the housing 10 accommodates one terminal fitting 20 arranged in the internal space 10a and one leaf spring 30 also arranged in the internal space 10a.

  The casing 10 is formed with a peripheral wall portion 11 surrounding the upper and lower sides and the front and rear sides of the internal space 10a. Specifically, the peripheral wall portion 11 includes an upper wall portion 12 on the upper surface side of the housing 10, a lower wall portion 13 on the lower surface side, a front wall portion 14 on the front surface side, a rear wall portion 15 on the rear surface side, and an upper wall. The slant wall portion 16 forms a slope between the front end of the portion 12 and the top end of the front wall portion 14.

  The upper wall portion 12 is provided with a first insertion hole 12a that penetrates the outside and the internal space 10a at a position near the rear end and that allows the end portion of the electric wire to be inserted into the internal space 10a. . Further, the upper wall portion 12 is a hole penetrating the outside and the internal space 10a at a position in front of the first insertion hole 12a, for inserting the first release button 61 to guide the vertical movement. The first guide hole 12b is provided.

  The first release button 61 is an elongated small piece made of a resin such as polycarbonate, and has one end protruding on the upper surface of the housing 10 (upper wall portion 12) and the other end in contact with the first arm portion 30b of the leaf spring 30. The first release button hole 12b is inserted into the first release button hole 12b.

  On the inner peripheral surface of the upper wall portion 12, a protruding portion 12c that protrudes toward the internal space 10a is provided between the first insertion hole 12a and the first release button hole 12b. The movement of the first arm portion 31 of the leaf spring 30 toward the first insertion hole 11a is restricted by contacting the protruding portion 12c.

  The lower wall portion 13 is provided with cutout portions 13a and 13a at two locations near the front and the rear in order to allow the two lead portions 20d and 20d of the terminal fitting 20 to be inserted therethrough.

  The front wall portion 14 is provided with a second insertion hole 14a that penetrates the outside and the internal space 10a at a position near the lower end, and for inserting the end portion of the electric wire into the internal space 10a. Further, the front wall portion 14 is a hole penetrating the outside and the internal space 10a at a position in front of the second insertion hole 14a, and for the second release button for inserting the second release button 62. A hole 14b is provided.

  The second release button 62 is an elongated resin piece similar to the first release button 61, and one end protrudes in front of the housing 10 (front wall portion 14) and the other end contacts the arm portion 30 c of the leaf spring 30. In the state of contact, it is inserted into the second release button hole 13b so as to freely advance and retract.

  On the inner surface of the front wall portion 14, a protruding portion 14c that protrudes toward the internal space 10a is provided between the second insertion hole 14a and the second release button hole 14b. The movement of the second arm portion 30c of the leaf spring 30 toward the second insertion hole 14a is restricted by contacting the protruding portion 14c.

  The inclined wall portion 16 is provided with a check hole 16a penetrating the outside and the internal space 10a in order to perform an electrical continuity check.

  A guide portion 18 that guides the curved portion 30 a of the leaf spring 30 protrudes from the inner surface of the side wall portion 17. The guide portion 18 has a column shape having a curved surface 18a, and is disposed so that the curved surface 18a faces the inclined wall portion 17 with a gap. This gap is set to a dimension slightly larger than the thickness of the leaf spring 30.

  On the opening side end face of the housing 10, a plurality of engagement convex portions 10p are provided at positions corresponding to the plurality of engagement holes 40p on the side plate 40 side.

  The terminal fitting 20 is produced by bending a flat plate made of a metal having excellent conductivity (for example, made of copper plated with tin). As shown in FIG. 3, the terminal fitting 20 includes a substantially triangular plate-shaped main body portion 20a, a rectangular first contact portion 20b bent up at a right angle from the rear end of the main body portion 20a, and a main body portion 20a. A rectangular second abutting portion 20c bent and raised at a right angle from the lower end, and two lead portions 20d and 20d extending downward from the front end and the rear end of the lower end portion of the main body portion 20a are provided.

  The leaf spring 30 is produced by bending a substantially rectangular flat plate made of a metal such as stainless steel into a substantially U-shape, and as shown in FIG. It has the 1st arm part 30b and the 2nd arm part 30c which were provided.

  The side plate 40 is a plate having the same side view shape as that of the casing 10 by molding an insulating resin material such as PA66 (polyamide 66), PBT (polybutylene terephthalate), or the like with a mold in the same manner as the casing 10. Is formed. Further, the side plate 40 is provided with a plurality of engagement holes 10q corresponding to the plurality of engagement protrusions 10p provided on the opening side end surface of the housing 10. The side plate 40 is attached by fitting each engagement hole 10q to each engagement convex portion 10p on the side surface opposite to the side wall portion 17 of the housing 10, and closes the opening of the space portion 10a.

  The spacer 50 is a plate having the same side view shape as that of the casing 10 by molding an insulating resin material such as PA66 (polyamide 66), PBT (polybutylene terephthalate), or the like with a mold, like the casing 10. Is formed. In addition, the spacer 50 is provided with a plurality of engagement convex portions (not shown) corresponding to a plurality of engagement holes (not shown) provided on the left side surface of the side wall portion 17 of the case 10. A plurality of engagement holes (not shown) are provided corresponding to the plurality of engagement protrusions 10p provided on the opening side end face of the ten. The spacer 50 is integrated with the housing 10 adjacent to the right side by fitting each engagement convex portion into each engagement hole on the left side surface of the side wall portion 17. In addition, the spacer 50 allows each engagement hole (not shown) to be fitted to each engagement protrusion 10p on the side surface opposite to the side wall portion 17 of the case 10 with respect to the case 10 adjacent to the left side. As a result, they are integrated to close the opening of the space portion 10a.

  Next, the structure of the terminal block 1 composed of the above members will be described. The terminal fitting 20 is arranged so that one surface of the main body portion 20 a is along the inner surface of the side wall portion 17 of the housing 10. Further, the two lead portions 20d and 20d are fitted into the notches 13a and 13a of the lower wall portion 13, respectively. At this time, the first contact portion 20b is in a positional relationship along the inner surface of the rear wall portion 15 of the housing 10, and the second contact portion 20c is in a positional relationship along the inner surface of the lower wall portion 13.

  The leaf spring 30 has a central curved portion 30a fitted into a gap 18b between the inner surface of the inclined wall portion 16 of the housing 10 and the curved surface 18a of the guide portion 18, and the first arm portion 30b protrudes toward the upper wall portion 12 side. The second arm portion 30c is disposed on the portion 12c so as to face the protruding portion 14c on the front wall portion 14 side. Further, the tip of the first arm portion 30b is in contact with or close to the inner surface of the first contact portion 20b of the terminal fitting 20, and the tip of the second arm portion 30c is in contact with or close to the inner surface of the second contact portion 20c. ing.

  The first release button 61 is inserted into the first release button hole 12 b, one end protrudes from the upper surface of the upper wall portion 12, and the other end contacts the first arm portion 30 b of the leaf spring 30. Similarly, the second release button 62 is inserted into the second release button hole 13 b, one end protrudes in front of the front wall portion 14, and the other end contacts the second arm portion 30 c of the leaf spring 30.

  The side plate 40 is attached to the side surface opposite to the side wall portion 17 of the housing 10 in a state where the terminal fitting 20, the leaf spring 30, the first release button 61, and the second release button 62 are assembled in the housing 10. The opening of the space 10a is closed.

  Next, the usage method of the terminal block 1 is demonstrated. Here, FIG. 5 is a diagram illustrating a state in which the end of the electric wire is inserted into the first insertion hole 12a of the terminal block 1 and connected. FIG. 6 is a diagram illustrating a state in which the end portion of the electric wire is inserted and connected to the second insertion hole 14 a of the terminal block 1. FIG. 7 is a diagram illustrating a state in which the electric wire inserted and connected to the first insertion hole 12 a is released by pressing the first release button 61. FIG. 8 is a diagram illustrating a state in which the electric wire inserted and connected to the second insertion hole 14 a is released by pressing the second release button 62.

  The terminal block 1 is attached to a printed circuit board (not shown) by inserting and soldering two lead portions 20d and 20d exposed from the lower surface of the housing 10 into through holes of the printed circuit board. And when extending an electric wire to the upper side of the terminal block 1, as shown in FIG. 5, the edge part of an electric wire is inserted in the 1st insertion hole 12a, and it connects to the terminal block 1 upper surface. For example, when the electric wire is a stranded wire, the wire end is inserted into the first insertion hole 12a while the first release button 61 is pressed, and then the first release button 61 is released to release the wire end. Is pressed against the first contact portion 20b of the terminal fitting 20 by the urging force of the first arm portion 30b of the leaf spring 30 to complete the connection. In addition, when the electric wire is a single wire, or when the end of the stranded wire is processed and a bar terminal is provided, the end of the electric wire is a leaf spring by inserting the end of the electric wire into the first insertion hole 12a. The connection is completed by being pressed against the first contact portion 20b of the terminal fitting 20 by the urging force of the first arm portion 30b of the 30.

  On the other hand, when it is desired to extend the electric wire to the front side of the terminal block 1, as shown in FIG. 6, the end of the electric wire is inserted into the second insertion hole 14a and connected to the front surface of the terminal block 1. For example, when the electric wire is a stranded wire, the end of the electric wire is inserted by inserting the end of the electric wire into the second insertion hole 14a while pressing the second release button 62, and then releasing the press of the second release button 62. Is pressed against the second contact portion 20c of the terminal fitting 20 by the urging force of the second arm portion 30c of the leaf spring 30 to complete the connection. In addition, when the electric wire is a single wire or when the end of the stranded wire is processed and a bar terminal is provided, the end of the electric wire is made into a leaf spring by inserting the end of the electric wire into the second insertion hole 14a. The urging force of the 30 second arm portion 30c is pressed against the second abutting portion 20c of the terminal fitting 20 to complete the connection.

  When the end of the electric wire is connected to the first insertion hole 12a, the first abutment by the first arm portion 30b of the leaf spring 30 by pressing the first release button 61 as shown in FIG. By releasing the pressure contact with the portion 20b, the end portion of the electric wire can be pulled out from the first insertion hole 12a. Further, when the end portion of the electric wire is connected to the second insertion hole 14a, the second abutment by the second arm portion 30c of the leaf spring 30 by pressing the second release button 62 as shown in FIG. By releasing the pressure contact with the portion 20c, the end portion of the electric wire can be pulled out from the second insertion hole 14a.

  As is clear from the above detailed description, the terminal block 1 of the present embodiment includes an insulating housing 10 having an internal space 11 a surrounded by the peripheral wall portion 11 and an internal space 10 a of the housing 10. One leaf spring 30 that is provided with two terminal fittings 20 and has a substantially U-shape comprising a central curved portion 30a and a first arm portion 30b and a second arm portion 30c provided on both sides thereof. Is disposed in the inner space 10a of the housing 10 and is located at a position facing the first arm portion 30b of the leaf spring 30 in the peripheral wall portion 11 of the housing 10 (upper wall portion 12 facing the outer surface of the first arm portion 30b). A first insertion hole 12a penetrating the internal space 10a is provided, and the end of the electric wire inserted into the internal space 10a through the first insertion hole 12a acts in a direction approaching the first insertion hole 12a of the leaf spring 30. The terminal fitting 20 by the biasing force The first abutting portion 20b) is configured to be in pressure contact with the peripheral wall portion 11 of the housing 10 and faces the second arm portion 30c of the leaf spring 30 (before facing the outer surface of the second arm portion 30c). The wall 14) is provided with a second insertion hole 14a penetrating the outside and the internal space 10a, and the end of the electric wire inserted into the internal space 10a through the second insertion hole 14a is a second insertion hole of the leaf spring 30. It is characterized in that it is configured to be brought into pressure contact with the terminal fitting 20 (second contact portion 20c) by an urging force acting in a direction approaching 14a.

  According to the terminal block 1, the first insertion hole 12 a and the second arm portion 30 c provided at the position (upper wall portion 12) facing the first arm portion 30 b of the leaf spring 30 in the peripheral wall portion 11 of the housing 10. Two insertion holes 12 a, 14 a with a second insertion hole 14 a provided at opposite positions are provided, and the end of the electric wire inserted into the internal space 10 a through each insertion hole 12 a, 14 a corresponds to each of the leaf springs 30. The terminal fitting 20 is pressed into contact with the urging force acting in the direction approaching the insertion holes 12a, 14a.

  Therefore, according to the terminal block 1, it is possible to select the insertion position of the electric wire and perform one-touch connection with a simple structure. In other words, the two insertion holes 12a and 14a having different arrangement positions are selectively used according to the use environment while having a simple structure in which one terminal fitting 20 and one leaf spring 30 are accommodated inside the housing 10. Then, an electric wire can be inserted to make a one-touch connection. For example, when another device is arranged around the first insertion hole 12a and there is not enough space for the electric wire connection, but there is enough space around the second insertion hole 14a, the second insertion hole If an electric wire is inserted into 14a, it becomes possible to perform an electric wire connection work easily. In addition, when the distance from the connection partner of the electric wire is closer to the first insertion hole 12a than to the second insertion hole 14a, if the electric wire is inserted into the first insertion hole 12a, a shorter electric wire is used. Thus, electric wire connection can be achieved.

  Further, the first arm portion 30b and the second arm portion 30c of the leaf spring 30 are formed symmetrically with respect to a center line L passing through the center of the bending portion 30a, and the first insertion hole 12a and the second insertion hole 14a. Is provided in a line-symmetrical position with respect to the center line L. In particular, the peripheral wall portion 11 of the housing 10 includes an upper wall portion 12 as a first wall portion in which the first insertion hole 12a is provided, and a second wall portion 14 in which the second insertion hole 14a is provided, and a leaf spring. The upper wall portion 12 and the front wall portion 14 are configured to be line symmetric with respect to 30 center lines L. Therefore, when the end portion of the electric wire is inserted into the internal space 10a through the insertion holes 12a and 14a, a biasing force having substantially the same size is generated in the leaf spring 30, and the end portion of the electric wire is applied to the terminal fitting 20. It is possible to ensure pressure contact.

  Moreover, since the electric wire insertion direction D1 of the first insertion hole 12a and the electric wire insertion direction D2 of the second insertion hole 14a are orthogonal to each other, the two insertion holes 12a are arranged at different positions and orthogonal to the electric wire insertion direction. , 14a can be selectively used according to the use environment to achieve electric wire connection.

  Further, the terminal block 1 includes a first release button 61 for pressing the first arm portion 30b of the leaf spring 30 in a direction opposite to the approaching direction to the first insertion hole 12a to release the pressure contact of the electric wire, A second release button 62 is provided for releasing the pressure contact of the electric wire by pressing the second arm portion 30c of the spring 30 in the direction opposite to the approaching direction to the second insertion hole 14a. Therefore, by pressing the first release button 61, the first arm portion 30b of the leaf spring 30 is pressed in the direction opposite to the approaching direction to the first insertion hole 12a, so that the pressure contact of the electric wire is easily released. be able to. Further, by pressing the second release button 62, the second arm portion 30c of the leaf spring 30 is pressed in the direction opposite to the approaching direction to the second insertion hole 14a, so that the pressure contact of the electric wire is easily released. be able to.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Terminal block 10 Housing 11 Peripheral wall part 11a Internal space 12 Upper wall part 12a 1st insertion hole 14 Front wall part 14a 2nd insertion hole 20 Terminal metal fitting 30 Leaf spring 30a Curved part 30b 1st arm part 30c 2nd arm part 40 Side board 50 Spacer 61 First release button 62 Second release button

Claims (5)

In a terminal block comprising an insulating housing having an internal space surrounded by a peripheral wall portion, and one terminal fitting disposed in the internal space of the housing,
One leaf spring having a substantially U-shape consisting of a central curved portion and a first arm portion and a second arm portion provided on both sides thereof is disposed in the internal space of the housing,
A first insertion hole that penetrates the outside and the internal space is provided at a position facing the first arm portion of the leaf spring in the peripheral wall portion of the housing, and is inserted into the internal space through the first insertion hole. An end portion of the electric wire is configured to be pressed against the terminal fitting by an urging force acting in a direction approaching the first insertion hole of the leaf spring;
A second insertion hole penetrating the outside and the internal space is provided at a position facing the second arm portion of the leaf spring in the peripheral wall portion of the housing, and is inserted into the internal space through the second insertion hole. The terminal block is configured such that an end portion of the electric wire is pressed against the terminal fitting by an urging force acting in a direction approaching the second insertion hole of the leaf spring. The first arm portion and the second arm portion of the leaf spring are formed symmetrically with respect to a center line passing through the center of the curved portion,
The terminal block according to claim 1, wherein the first insertion hole and the second insertion hole are provided in a line-symmetric position with respect to the center line.   The terminal block according to claim 2, wherein the electric wire insertion direction of the first insertion hole and the electric wire insertion direction of the second insertion hole are orthogonal to each other. The peripheral wall portion of the housing has a first wall portion provided with the first insertion hole and a second wall portion provided with the second insertion hole,
4. The terminal block according to claim 2, wherein the first wall portion and the second wall portion are line-symmetric with respect to a center line of the leaf spring. 5. A first release button for releasing the pressure contact of the electric wire by pressing the first arm portion of the leaf spring in a direction opposite to the approaching direction to the first insertion hole;
A second release button for releasing the pressure contact of the electric wire by pressing the second arm portion of the leaf spring in a direction opposite to the approaching direction to the second insertion hole. The terminal block according to any one of 1 to 4.

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