JP2017199469A - Terminal device, contact opening/closing device and connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal device which is more easily connectable to a connected terminal, a contact opening/closing device comprising the terminal device, and a connection structure comprising the terminal device.SOLUTION: Each of multiple (four) connected terminals 5 comprises: a base 55; two arms 56 protruding from the base 55 in one direction; and two claws 57 provided in distal ends of the two arms 56 and protruding to be close to each other. A terminal device 1 comprises a body 3 and tabular multiple (four) connection terminals 2 protruding from the body 3 in a predetermined direction E1. Each of the multiple connection terminals 2 is disposed between the two arms 56 provided in each of the multiple connected terminals 5, and brought into contact with the two claws 57. In each of the multiple connection terminals 2, a groove 4 which becomes narrow from a distal end to the body 3 is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a terminal device, a contact switching device, and a connection structure. More specifically, the present invention relates to a terminal device having a plate-like connection terminal, a contact switching device including the terminal device, and a connection structure including the terminal device. .

  Conventionally, as an example of a contact switching device, an electromagnetic relay including an electromagnet (opening / closing mechanism) and a casing (body) that houses the electromagnet is known (see, for example, Patent Document 1). The electromagnetic relay described in Patent Document 1 further includes a movable contact terminal, a fixed contact terminal, and a coil terminal as plate-like connection terminals protruding from the housing.

JP 2010-108653 A

  A contact switching device generally includes a terminal device including a connection terminal. The connection terminal is electrically connected to a connection terminal separate from the terminal device. The plate-like connection terminal of the terminal device is pushed into and connected to a connected terminal having two arms. When the operator holds the terminal device and pushes the connection terminal of the terminal device between the two arms of the terminal to be connected, the two terminals of the terminal device are squeezed with the connection terminal of the terminal device, or the connection terminal has two arms. There is a possibility that the connected terminal may be bent by pushing the terminal device without being in between. Therefore, the worker tends to take a long time to connect the connection terminal of the terminal device to the connected terminal, and the workability of the connection of the terminal device is poor.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal device that can be more easily connected to a connected terminal, a contact switching device that includes the terminal device, and a connection structure that includes the terminal device. To do.

  The terminal device of the present invention is a terminal device connected to a plurality of connected terminals. The plurality of connected terminals include a base, two arm portions projecting in one direction from the base portion, and two claw portions provided at the tips of the two arm portions and projecting in directions approaching each other, Have The terminal device includes a body and a plurality of plate-like connection terminals that protrude from the body in a predetermined direction. Each of the plurality of connection terminals is disposed between the two arm portions of the connection terminal corresponding to the plurality of connection terminals on a one-to-one basis among the plurality of connection terminals, and is in contact with the two claw portions. . Each of the plurality of connection terminals is provided with a groove that decreases in width from the tip toward the body.

  In this terminal device, the width of the groove is a dimension in the width direction orthogonal to the predetermined direction in each of the plurality of connection terminals. The maximum width of the groove is preferably larger than a dimension in a direction orthogonal to the direction in which the two arm portions are arranged in the two claw portions and the one direction.

  In this terminal device, it is preferable that the edge of the groove includes a tapered portion that intersects the predetermined direction.

  In this terminal device, it is preferable that the groove has a symmetrical shape centered on an axis of symmetry along the predetermined direction.

  In this terminal device, each of the plurality of connection terminals is preferably provided with an inclined surface that reduces the thickness of each of the plurality of connection terminals toward the edge of the groove.

  In this terminal device, it is preferable that the thickness directions of at least two of the plurality of connection terminals intersect each other.

  The contact opening / closing device of the present invention includes the terminal device described above, a contact portion provided on an electric circuit including two connection terminals among the plurality of connection terminals in the terminal device, an opening / closing mechanism for opening and closing the contact portion, It is provided with.

  The connection structure of the present invention includes the terminal device described above or the contact switching device described above, and the plurality of connected terminals. A thickness direction of each of the plurality of connection terminals is parallel to a direction in which the two arm portions in contact with each of the plurality of connection terminals are arranged.

  In this connection structure, it is preferable that an edge of the groove in each of the plurality of connection terminals includes a flat portion orthogonal to the predetermined direction.

  In this connection structure, it is preferable that the shortest distance between the two claw portions is smaller than the thickness of the plurality of connection terminals in a state where the plurality of connection terminals are not connected to the plurality of connected terminals.

  In the terminal device of the present invention, the groove of the connection terminal guides the two claw portions of the connected terminal in a direction in which the width is narrowed when the connection terminal is disposed between the two arm portions of the connected terminal. . The connection terminal is easily disposed between the two arm portions by guiding the two claw portions with a groove. Therefore, the terminal device of this invention can connect a connecting terminal to a to-be-connected terminal more easily.

  Since the contact switching device of the present invention includes the terminal device described above, the connection terminal can be more easily connected to the connected terminal.

  Since the connection structure of the present invention includes the terminal device described above, the connection terminal can be more easily connected to the connected terminal.

FIG. 1A is a front view of a contact switching apparatus and connection structure according to an embodiment of the present invention. FIG. 1B is a right side view of the contact opening / closing device and a plurality of connected terminals connecting the same. FIG. 2A is an enlarged view of a main part of the contact switching device of the above. 2B is an end view taken along line BB of FIG. 2A. FIG. 3 is an enlarged view of a connected terminal in a connection structure including the contact switching device of the above. FIG. 4A is a front view of a connection structure in which the connection terminals of the contact switching device are connected to the connected terminals. FIG. 4B is a right side view of the connection structure in which the connection terminal of the contact switching device is connected to the connected terminal. 5 is a cross-sectional view of the contact switching apparatus shown in FIG. FIG. 6A is a front view of a connected terminal in the connection structure according to Modification 1 of the embodiment of the present invention. FIG. 6B is a front view of the connected terminal in the connection structure according to Modification 2 of the embodiment of the present invention. FIG. 6C is a front view of the connected terminal in the connection structure according to Modification 3 of the embodiment of the present invention.

(Embodiment)
The terminal device 1 and the connection structure 100 of this embodiment will be described with reference to FIGS. Moreover, the contact switching apparatus 10 provided with the terminal device 1 is demonstrated with reference to FIG. 1 to 5 are schematic diagrams, and the ratios of the sizes and thicknesses of the components shown in the drawings do not necessarily reflect actual dimensional ratios.

  The terminal device 1 includes a body 3 and a plurality of (for example, four) connection terminals 2. Hereinafter, when the four connection terminals 2 are described separately, the first connection terminal 21 to the fourth connection terminal 24 will be described. The body 3 has electrical insulation. The body 3 is made of, for example, a resin material. As an example, the body 3 is formed in a hollow rectangular parallelepiped shape. The connection terminal 2 protrudes from the one surface 31 of the body 3 in a predetermined direction E1. The predetermined direction E <b> 1 is one direction orthogonal to the one surface 31 of the body 3. Each of the four connection terminals 2 is connected to a plurality of (four) connection terminals 5 corresponding to the four connection terminals 2 on a one-to-one basis. Hereinafter, when the four connected terminals 5 are described separately, the first connected terminals 51 to the fourth connected terminals 54 will be described. The connection structure 100 of this embodiment includes a plurality of connection terminals 2 and a plurality of connected terminals 5, and is a structure in which the plurality of connection terminals 2 are detachably connected to the plurality of connected terminals 5.

  The connection terminal 2 is formed in a plate shape as shown in FIG. The connection terminal 2 has conductivity. The connection terminal 2 is made of, for example, copper or a copper alloy.

  As shown in FIGS. 1 and 2A, a groove 4 is provided at the tip of the connection terminal 2. The groove 4 forms a recess from the tip of the connection terminal 2 toward the one surface 31 of the body 3. The groove 4 is provided, for example, at the center of the width direction (a direction orthogonal to the predetermined direction E1 and the thickness direction of the connection terminal 2) at the tip of the connection terminal 2.

  An edge 41 (see FIG. 2A) of the groove 4 of the connection terminal 2 is an inner surface of the groove 4. The edge 41 of the groove 4 is preferably a surface parallel to the thickness direction of the connection terminal 2. The edge 41 of the groove 4 has two tapered portions 42 and one flat portion 43. Each of the two tapered portions 42 is a surface that forms an acute angle A1 (for example, 12 degrees) with the predetermined direction E1. The two tapered portions 42 are formed such that the width of the groove 4 becomes narrower from the tip of the connection terminal 2 toward the one surface 31 of the body 3. The width of the groove 4 is a dimension in a direction orthogonal to the predetermined direction E1 and the thickness direction of the connection terminal 2. The two tapered portions 42 have a symmetrical shape with a symmetry axis parallel to the predetermined direction E1 as the center.

  The flat portion 43 is a surface that is provided between the two tapered portions 42 and is substantially orthogonal to the predetermined direction E1. The term “substantially orthogonal” as used herein means that the angle formed between the predetermined direction E1 and the flat portion 43 is approximately 90 degrees, for example, 85 to 95 degrees, and the angle may not be strictly 90 degrees. . Hereinafter, “substantially orthogonal” means that the angle formed by two directions, the angle formed by one direction and one plane, and the angle formed by the two planes are approximately 90 degrees, and the angle is strictly 90 degrees. It does not have to be a degree. The flat portion 43 is provided at the center in the width direction of the connection terminal 2.

  The width of the groove 4 of the connection terminal 2 increases as it approaches the tip of the connection terminal 2. In the groove 4 of the connection terminal 2, the maximum width L1 is a dimension in a direction orthogonal to the direction in which the two arm portions 56 are arranged in the two claw portions 57 and one direction (predetermined direction E1) (hereinafter referred to as a thickness T2). Larger than.) The width L2 of the flat portion 43 of the groove 4 is larger than the thickness T2 of the two claw portions 57.

  As shown in FIG. 1 and FIG. 2A, two inclined surfaces 44 are formed on the connection terminal 2. One inclined surface 44 is formed between the edge 41 of the groove 4 in the connection terminal 2 and the first surface 201 orthogonal to the thickness direction of the connection terminal 2. The other inclined surface 44 is formed between the second surface 202 opposite to the first surface 201 and the edge 41 of the groove 4. The two inclined surfaces 44 are provided so that the thickness T <b> 1 of the connection terminal 2 decreases toward the edge 41 of the groove 4. Each of the two inclined surfaces 44 includes a first inclined surface 45 and a second inclined surface 46. The first inclined surface 45 is formed along the tapered portion 42 of the groove 4. An acute angle A2 formed by the plane including the first surface 201 of the connection terminal 2 and the first inclined surface 45 is, for example, 30 degrees. The second inclined surface 46 is formed along the flat portion 43 of the groove 4. The acute angle formed between the plane including the first surface 201 of the connection terminal 2 and the second inclined surface 46 is, for example, 30 degrees.

  Next, a specific configuration of each of the first connection terminal 21 to the fourth connection terminal 24 will be described. As shown in FIG. 1B, the first connection terminal 21 and the second connection terminal 22 protrude from one end of the one surface 31 in the body 3. The first connection terminal 21 and the second connection terminal 22 are arranged along the thickness direction of the first connection terminal 21. The thickness direction of the second connection terminal 22 and the thickness direction of the first connection terminal 21 face the same direction, and the second connection terminal 22 and the first connection terminal 21 are parallel to each other.

  As shown in FIG. 1A, the fourth connection terminal 24 protrudes from the other end of the one surface 31 in the body 3. The thickness direction of the fourth connection terminal 24 is orthogonal to the thickness direction of the first connection terminal 21. The third connection terminal 23 protrudes from a central portion between one end and the other end of the one surface 31 of the body 3. The third connection terminal 23 and the fourth connection terminal 24 are arranged in the thickness direction of the fourth connection terminal 24. The thickness direction of the third connection terminal 23 and the thickness direction of the fourth connection terminal 24 face the same direction, and the third connection terminal 23 and the fourth connection terminal 24 are parallel to each other.

  Here, the connected terminal 5 will be described with reference to FIGS. 1 and 3. The connected terminal 5 has conductivity. The connected terminal 5 is made of, for example, copper or a copper alloy. As shown in FIG. 3, the connected terminal 5 includes a base portion 55, two arm portions 56, and two claw portions 57. The two arm portions 56 protrude from the base portion 55 in the predetermined direction E1. The base portion 55 is formed integrally with the two arm portions 56 and supports the two arm portions 56. One claw portion 57 is provided on each side of the two arm portions 56 opposite to the base portion 55. The bases 55 of the plurality of connected terminals 5 are fixed to, for example, one substrate and project so that the longitudinal direction is along one direction (predetermined direction E1). The plurality of connected terminals 5 are so-called “tuning fork terminals (tuning fork type terminals)”.

  The two claw portions 57 are formed so as to protrude in a direction approaching each other. In the two claw portions 57, end surfaces 58 are provided at the tips in the direction protruding from the two arm portions 56, respectively. The two end surfaces 58 are surfaces parallel to each other. The interval between the two end faces 58 is the shortest distance L3 between the two claw portions 57. The shortest distance L3 is smaller than the thickness T1 of the first connection terminal 21.

  A chamfered portion 571 and a chamfered portion 572 are provided on each of the two claw portions 57. The chamfered portion 571 is provided between the tip of the arm portion 56 and the end surface 58. The chamfered portion 572 is provided on the claw portion 57 on the side opposite to the chamfered portion 571. The chamfered portion 571 and the chamfered portion 572 are provided so that the width of the claw portion 57 (the dimension along the longitudinal direction of the arm portion 56) decreases as the claw portion 57 protrudes from the arm portion 56. . The chamfered portion 571 and the chamfered portion 572 are curved surfaces that smooth the portion between the end surface 58 and the arm portion 56 in the claw portion 57.

  Next, a specific configuration of the first connected terminal 51 to the fourth connected terminal 54 will be described. The first connected terminal 51 and the second connected terminal 52 are arranged in the thickness direction of the first connecting terminal 21. The two arm portions 56 in each of the first connected terminal 51 and the second connected terminal 52 are arranged in the thickness direction of the first connected terminal 21 (see FIG. 1B). The third connected terminal 53 and the fourth connected terminal 54 are arranged in the thickness direction of the fourth connecting terminal 24. The two arm portions 56 in each of the third connected terminal 53 and the fourth connected terminal 54 are arranged in the thickness direction of the fourth connected terminal 24 (see FIG. 1A). Between the two arm portions 56 in each of the first connected terminal 51 to the fourth connected terminal 54, the first connecting terminal 21 to the fourth connecting terminal 24 corresponding one-to-one are inserted.

  Next, a method of connecting the connection terminal 2 of the terminal device 1 to the connected terminal 5 will be described with reference to FIG. FIG. 4 shows a state in which the connection terminal 2 of the terminal device 1 is connected to the connected terminal 5 by the terminal device 1 being pushed in the predetermined direction E1 toward the connected terminal 5.

  In a state where the four connection terminals 2 of the terminal device 1 are not displaced with respect to the four connected terminals 5, when the four connection terminals 2 of the terminal device 1 are pushed into the four connected terminals 5, One connection terminal is connected to four connected terminals. Even if the four connecting terminals 2 are displaced from the four connected terminals 5, the groove 4 of the connecting terminal 2 guides the two claws 57 of the connected terminal 5, so that 4 The two connecting terminals 2 are easily aligned with the four connected terminals 5. Hereinafter, when the four connection terminals 2 of the terminal device 1 are displaced with respect to the four connected terminals 5, the operator moves the four connection terminals 2 with respect to the four connected terminals 5. A method of aligning at the correct position will be described.

  For example, the four connection terminals 2 are displaced with respect to the four connected terminals 5, and the tips of the four connection terminals 2 of the terminal device 1 are connected to the two arm portions 56 of the four connected terminals 5. Assume that it touches the tip. For example, the worker moves the terminal device 1 in the thickness direction of the first connection terminal 21 to connect the two connected terminals into the grooves 4 of the two connection terminals (for example, the first connection terminal 21 and the second connection terminal 22). Two claw portions 57 of the terminal 5 (for example, the first connected terminal 51 and the second connected terminal 52) are inserted. Next, the worker moves the terminal device 1 in the thickness direction of the fourth connection terminal 24, for example, and separates it into the grooves 4 of the other two connection terminals (for example, the third connection terminal 23 and the fourth connection terminal 24). The two claw portions 57 of the two connected terminals 5 (for example, the third connected terminal 53 and the fourth connected terminal 54) are inserted. A chamfered portion 571 in the claw portion 57 of the connected terminal 5 is in contact with the first inclined surface 45 around the tapered portion 42 of the connecting terminal 2. The operator connects the terminal device 1 in the thickness direction of the first connection terminal 21 and the thickness of the fourth connection terminal 24 with the two claw portions 57 corresponding one-to-one in the grooves 4 of the four connection terminals. Repeatedly move several times alternately in the direction. At that time, the chamfered portion 571 of the connected terminal 5 guides the groove 4 of the connecting terminal 2 between the two claw portions 57. The two claw portions 57 are guided in contact with the first inclined surface 45 around the tapered portion 42 of the connection terminal 2 and are guided to the second inclined surface 46 of the flat portion 43. When the terminal device 1 is pushed in the predetermined direction E1 from the state where the two claw portions 57 are in contact with the second inclined surface 46 of the connection terminal 2, the two claw portions 57 move along the second inclined surface 46. The two arm portions 56 of the connected terminal 5 are bent. The shortest distance L3 between the two claw portions 57 is increased to the thickness T1, and the flat portion 43 of the connection terminal 2 is inserted between the two claw portions 57. Since the bending restoring force is generated in the two arm portions 56, the two end surfaces 58 of the two claw portions 57 are pressed against the connection terminal 2 by the two arm portions 56 and come into surface contact. The contact reliability between the connected terminal 5 and the connecting terminal 2 is ensured by the restoring force of the bending of the two arm portions 56.

  The thickness direction in each of the plurality of connection terminals 2 is substantially parallel to the direction in which the two arm portions 56 in contact with each of the plurality of connection terminals 2 are arranged. In other words, the connecting terminal 2 and the connected terminal 5 that are in contact with each other are substantially orthogonal to each other in the thickness direction. Note that “substantially parallel” as used herein means that the acute angle formed by the two directions described above is approximately 0 degrees, for example, 0 to 5 degrees, and the angle may not be strictly 0 degrees. . Hereinafter, “substantially parallel” means that an acute angle formed by two directions is approximately 0 degrees, for example, 0 to 5 degrees, and the angle may not be strictly 0 degrees.

  Since the thickness direction of the first connection terminal 21 and the fourth connection terminal 24 is substantially orthogonal to each other, the connection terminal 2 with respect to the connected terminal 5 is positioned in two directions substantially orthogonal to the predetermined direction E1. Similarly, since the thickness direction of the second connection terminal 22 and the third connection terminal 23 is substantially orthogonal to each other, the connection terminal 2 with respect to the connected terminal 5 is positioned in two directions substantially orthogonal to the predetermined direction E1. The That is, the terminal device 1 is positioned at a total of four locations with respect to the connected terminal 5. The terminal device 1 is pushed into the connected terminal 5 in a state in which it is difficult to shift in two directions substantially orthogonal to the predetermined direction E1. Therefore, the worker can easily perform the work of connecting the terminal device 1 to the connected terminal 5.

  The width L2 of the flat portion 43 of the groove 4 in the connection terminal 2 is larger than the thickness T2 of the two claw portions 57. Therefore, the flat portion 43 is easily inserted between the two claw portions 57. The second inclined surface 46 in the flat portion 43 and the connection terminal 2 is substantially parallel to the thickness direction of the claw portion 57 when viewed from the predetermined direction E1. Therefore, compared with the case where the taper portion 42 and the first inclined surface 45 are inserted between the two claw portions 57, the flat portion 43 and the second inclined surface 46 in the connection terminal 2 are between the two claw portions 57. Easy to be inserted into. Therefore, when the terminal device 1 is pushed in the predetermined direction E <b> 1, the connection terminal 2 is easily inserted between the two claw portions 57 of the connected terminal 5. Therefore, the operator can easily connect the terminal device 1 to the connected terminal 5.

  When the connection terminal 2 is pulled out from between the two claw portions 57, the chamfered portion 572 of the connected terminal 5 is connected to the first surface 201 and the second surface of the connection terminal 2 by the claw portion 57 of the connected terminal 5. The surface 202 is hardly caught.

  Next, the contact switching device 10 will be described with reference to FIG. The contact opening / closing device 10 includes a terminal device 1, a contact portion 11, and an opening / closing mechanism 14 that opens and closes the contact portion 11. The contact portion 11 and the opening / closing mechanism 14 are accommodated in the body 3. In the contact switching device 10, the body 3 forms a housing. The contact portion 11 includes a fixed contact 12 and a movable contact 13. The contact switching device 10 opens and closes the contact portion 11 by moving the movable contact 13 by the opening / closing mechanism 14. The contact switching device 10 is, for example, a vehicle-mounted plug-in relay that employs a micro ISO terminal arrangement. The contact opening / closing device 10 is connected to a connected terminal 5 fixed to a board housed in a relay box of an automobile, for example, and housed in the relay box.

  The opening / closing mechanism 14 includes an electromagnet 18, an armature 16, and a movable spring 17. The electromagnet 18 includes an exciting coil 19, an iron core 20 around which the exciting coil 19 is wound, and a yoke 15 that is L-shaped and forms a magnetic path. The exciting coil 19 is electrically connected to the first connection terminal 21 and the second connection terminal 22. The armature 16 is formed in a plate shape. One end of the armature 16 is opposed to the iron core 20, and the other end opposite to the one end is disposed near the yoke 15.

  The movable contact 13, the fixed contact 12, the movable spring 17, the armature 16, the iron core 20, and the yoke 15 have conductive members. The movable spring 17 is formed in a long plate shape. A movable contact 13 is provided at one end in the longitudinal direction of the movable spring 17. A central portion in the longitudinal direction of the movable spring 17 is fixed to the armature 16. The other end of the movable spring 17 in the longitudinal direction is fixed to the yoke 15. The movable spring 17 is bent so that the movable contact 13 is separated from the fixed contact 12 and the armature 16 is separated from the iron core 20.

  The movable contact 13 and the movable spring 17 are electrically connected to the fourth connection terminal 24. The fixed contact 12 is electrically connected to the third connection terminal 23. That is, the fixed contact 12 and the movable contact 13 are provided on the electric circuit including the third connection terminal 23 and the fourth connection terminal 24.

  When a current flows through the first connection terminal 21 and the second connection terminal 22, the iron core 20 of the electromagnet 18 attracts the armature 16 by a magnetic force. In a state where the armature 16 is in contact with the iron core 20, the movable spring 17 presses the movable contact 13 against the fixed contact 12, so that the contact portion 11 is closed. Therefore, when a current flows through the first connection terminal 21 and the second connection terminal 22, the third connection terminal 23 and the fourth connection terminal 24 are electrically connected. On the other hand, when no current flows through the first connection terminal 21 and the second connection terminal 22, the movable spring 17 separates the armature 16 from the iron core 20 and the movable contact 13 from the fixed contact 12 due to restoring force. Therefore, when no current flows through the first connection terminal 21 and the second connection terminal 22, the contact part 11 is in an open state.

  As described above, the terminal device 1 of the present embodiment is connected to the plurality of connected terminals 5 (the first connected terminals 51 to the fourth connected terminals 54). The plurality of connected terminals 5 include a base portion 55, two arm portions 56 that protrude in one direction from the base portion 55, and two claw portions that are provided at the tips of the two arm portions 56 and protrude in directions approaching each other. 57. The terminal device 1 includes a body 3 and a plurality of plate-like connection terminals 2 (a first connection terminal 21 to a fourth connection terminal 24) protruding from the body 3 in a predetermined direction E1. Each of the plurality of connection terminals 2 is arranged between the two arm portions 56 of the connected terminal 5 corresponding to the plurality of connection terminals 2 out of the plurality of connected terminals 5 and is connected to the two claw portions 57. Touch. Each of the plurality of connection terminals 2 is provided with a groove 4 whose width decreases from the tip toward the body 3.

  According to the above configuration, when the connection terminal 2 is disposed between the two arm portions 56 of the connected terminal 5, the groove 4 of the connection terminal 2 guides the two claw portions 57 of the connected terminal 5. . The groove 4 of the connection terminal 2 has a width that decreases from the tip of the connection terminal 2 toward the body 3, and can guide the two claw portions 57 in a direction in which the width of the groove 4 decreases. Therefore, the connection terminal 2 is easily inserted between the two arm portions 56. Therefore, the terminal device 1 can connect the connecting terminal 2 to the connected terminal 5 more easily.

  By the way, the stronger the force with which the two claw portions 57 of the connected terminal 5 sandwich the connecting terminal 2, the stronger the force required to push the connecting terminal 2 into and out of the connected terminal 5. Generally, when the plug-in relay is pushed into the tuning fork terminal, the connection terminal and the tuning fork terminal can be bent if the connection terminal and the tuning fork terminal are twisted or if the plug-in relay is pushed obliquely with respect to the tuning fork terminal. There was sex.

  On the other hand, in the terminal device 1, since the two claw portions 57 of the connected terminal 5 are guided by the groove 4 of the connection terminal 2, the connection terminal 2 is connected to the connected terminal in a state where the groove 4 guides the two claw portions 57. 5 is easy to be positioned. For example, the operator can easily push the connection terminal 2 positioned with respect to the connection terminal 5 in the predetermined direction E1 without squeezing the connection terminal 2 and the connection terminal 5. It becomes difficult to push the connection terminal 2 diagonally. Further, the operator can easily perform the connection work because the connecting terminal 2 is positioned with respect to the connected terminal 5 without pushing the connecting terminal 2 into the connected terminal 5 while looking at the tip of the connecting terminal 2.

  The width of the groove 4 in the terminal device 1 is a dimension in the width direction orthogonal to the predetermined direction E1 in each of the plurality of connection terminals 2. The maximum width L1 of the groove 4 is preferably larger than the dimension (thickness T2) in the direction perpendicular to the direction in which the two arm portions 56 are arranged in the two claw portions 57 and one direction (predetermined direction E1). As a result, the groove 4 of the connection terminal 2 easily enters between the two claw portions 57 of the connected terminal 5 (the first connected terminal 51 to the fourth connected terminal 54).

  It is preferable that the edge 41 of the groove | channel 4 in the terminal device 1 contains the taper part 42 which cross | intersects the predetermined direction E1. Thereby, the groove | channel 4 of the connecting terminal 2 can guide the two nail | claw parts 57 of the to-be-connected terminal 5 in the direction which cross | intersects the predetermined direction E1 along the taper part 42. FIG.

  In the terminal device 1, it is preferable that the groove | channel 4 is a symmetrical shape centering | focusing on the symmetrical axis along the predetermined direction E1. As a result, the groove 4 of the connection terminal 2 can easily guide the two claw portions 57 of the connected terminal 5 that have entered the groove 4 in a direction approaching the axis of symmetry of the groove 4. Therefore, even if the position of the claw portion 57 of the connected terminal 5 is displaced with respect to the groove 4, it is easy to guide to the correct position with respect to the width direction of the connecting terminal 2 (width direction orthogonal to the predetermined direction E1). .

  Each of the plurality of connection terminals 2 in the terminal device 1 is preferably provided with an inclined surface 44 that decreases the thickness T1 of each of the plurality of connection terminals 2 toward the edge 41 of the groove 4. Thereby, the two claw portions 57 of the connected terminal 5 in contact with the inclined surface 44 are easily moved along the inclined surface 44, and the two claw portions 57 are easily spread. Therefore, the connection terminal 2 is easily inserted between the two claw portions 57.

  In at least two connection terminals 2 (for example, the first connection terminal 21 and the fourth connection terminal 24) among the plurality of connection terminals 2 in the terminal device 1, it is preferable that respective thickness directions intersect each other. Accordingly, each groove 4 of the two connection terminals 2 can guide the two claw portions 57 corresponding to one to one in two directions intersecting the predetermined direction E1, respectively. The position of the terminal 2 is easily determined. Since the position of the connecting terminal 2 with respect to the connected terminal 5 is easily determined, the connecting terminal 2 is easily connected to the connected terminal 5 in a stable state.

  The contact switching device 10 of this embodiment includes the terminal device 1 described above, a contact portion 11, and an opening / closing mechanism 14 that opens and closes the contact portion 11. The contact portion 11 is provided in an electric circuit including two connection terminals 2 (for example, the third connection terminal 23 and the fourth connection terminal 24) among the plurality of connection terminals 2. According to the above configuration, the plurality of connection terminals 2 of the contact switching device 10 are more easily connected to the plurality of connected terminals 5.

  The connection structure 100 of this embodiment includes the terminal device 1 described above or the contact switching device 10 described above, and a plurality of connected terminals 5. The thickness direction in each of the plurality of connection terminals 2 is parallel to the direction in which the two arm portions 56 in contact with each of the plurality of connection terminals 2 are arranged. Thereby, the plane including one plane (for example, the first surface 201) of the connection terminal 2 and the arrangement direction of the two arm portions 56 of the connected terminal 5 intersect each other. Therefore, the connection terminal 2 is easily positioned with respect to the connected terminal 5.

  In the connection structure 100 of the present embodiment, it is preferable that the edge 41 of the groove 4 in each of the plurality of connection terminals 2 includes a flat portion 43 orthogonal to the predetermined direction E1. Thereby, for example, compared with the case where the flat portion 43 is not provided on the edge 41 of the groove 4 in the connection terminal 2 (when the groove 4 is V-shaped), the edge 41 of the groove 4 in the connection terminal 2 to the body 3. Can be secured more widely. Therefore, it is easier to secure a portion where the two claw portions 57 in the connected terminal 5 are in contact with the connecting terminal 2.

  Moreover, in the connection terminal 2, when the site | part (site from the flat part 43 to the body 3) which the two end surfaces 58 of the to-be-connected terminal 5 contact can be ensured, the dimension of the longitudinal direction of the connection terminal 2 is shortened. Is also possible. The dimension of the connection terminal 2 in the predetermined direction E1 is, for example, 11 mm, but it can be about 8 mm. As the dimension of the connection terminal 2 in the predetermined direction E1 is shorter, the connection terminal 2 is less likely to bend or tilt in a direction intersecting the predetermined direction E1 when the connection terminal 2 is connected to the connected terminal 5. Therefore, the connection terminal 2 of the terminal device 1 is easily connected to the connected terminal 5. Further, the shorter the length of the connection terminal 2 in the predetermined direction E <b> 1 is, the less difficult it is for the operator to twist the connection terminal 2 and the connected terminal 5.

  In the connection structure 100 of the present embodiment, the shortest distance L3 between the two claw portions 57 is greater than the thickness T1 of the plurality of connection terminals 2 in a state where the plurality of connection terminals 2 are not connected to the plurality of connected terminals 5. Is preferably small. As a result, the two arm portions 56 bend with the two claw portions 57 sandwiching the connection terminal 2, and the contact pressure between the two claw portions 57 and the connection terminal 2 is easily secured by the restoring force. Contact reliability can be improved.

  By the way, the number of the connection terminals 2 is not limited to four, and may be two or more. Although the thickness direction of the first connection terminal 21 and the thickness direction of the third connection terminal 23 are orthogonal to each other, it is not limited to being orthogonal, and it is only necessary to intersect. For example, the three connection terminals 2 may be provided so as to be parallel to each side of the triangle when viewed from a direction orthogonal to the one surface 31 of the body 3.

  The shape of the edge 41 of the groove 4 may be a U-shape in which the two taper portions 42 and the flat portion 43 are smoothly connected, or the two taper portions 42 and the flat portion 43 are omitted. The U-shape may be such that the edge 41 of the surface is a smooth curved surface. Moreover, in the connection terminal 2, when the site | part which the nail | claw part 57 of the to-be-connected terminal 5 contacts can be ensured, the flat part 43 may be abbreviate | omitted and the shape of the groove | channel 4 is good also as V shape.

  Two of the two inclined surfaces 44 may be omitted, or one of the two inclined surfaces 44 may be omitted.

  The member housed in the body 3 is not limited to the contact portion 11 and the opening / closing mechanism 14, and may be an arbitrary member such as a fuse. In short, the electrical component including the terminal device 1 and the member housed in the body 3 is not limited to the contact switching device 10.

  The first connection terminal 21 to the fourth connection terminal 24 are not limited to the same configuration, and the configuration of each groove 4 and the thickness T1 may be appropriately changed.

  The first to fourth connected terminals 51 to the fourth connected terminal 54 are not limited to the same configuration, and the shape and thickness T3 of each claw portion 57 may be appropriately changed.

  The connection terminal 2 and the connected terminal 5 of the contact switching device 10 are not limited to conforming to the micro ISO standard, and may have an appropriate shape and size. Further, the contact switching device 10 is not limited to a vehicle-mounted plug-in relay, and may be a plug-in relay for an appropriate use.

(Modifications 1 to 3)
Modifications 1 to 3 of the connected terminal 5 of the connection structure 100 in the embodiment will be described with reference to FIG. In addition, description is abbreviate | omitted about the structure similar to the to-be-connected terminal 5 of the connection structure 100 in embodiment.

  As shown in FIG. 6A, the connected terminal 5a of the connection structure of Modification 1 is replaced with a chamfered part 571a instead of the chamfered part 571 and the chamfered part 572 of the connected terminal 5 of the connected structure 100 in the embodiment. And a chamfered portion 572a. The chamfered portion 571a and the chamfered portion 572a are different from the chamfered portion 571 and the chamfered portion 572 in that they are formed to be flat. Since the claw portion 57a is formed by a flat end surface 58a, a chamfered portion 571a, and a chamfered portion 572a, for example, when the connected terminal 5a is formed by punching or the like, it is punched more than the connected terminal 5 It is easy to manufacture a mold for use.

  As shown in FIG. 6B, the connected terminal 5b of the connection structure of the modification 2 is from a direction (a direction along the thickness T2) orthogonal to the direction in which the two arm portions 56b are arranged and one direction (predetermined direction E1). As can be seen, the two claw portions 57b are formed in a semicircular shape. The peripheral surface 58b of each claw part 57b in the two claw parts 57b is a curved surface. When the connection terminal 2 is connected to the connected terminal 5b, the connection terminal 2 is smoothly guided between the two claw portions 57b along the peripheral surface 58b. Further, since the two claw portions 57b are not easily caught by the connection terminal 2 when the connection terminal 2 is pulled out from the connected terminal 5b, the connection terminal 2 is easily pulled out.

  The to-be-connected terminal 5c of the connection structure of the modification 3 is provided with inclined surfaces 58c on the two claw portions 57c as shown in FIG. 6C. The inclined surface 58c is provided such that the protruding dimension of the claw portion 57c from the arm portion 56c becomes smaller as it approaches the tip of the arm portion 56c. In other words, the inclined surface 58c is provided such that the distance between the two claw portions 57c increases toward the distal end side of the arm portion 56c. The inclined surface 58c is guided between the two claw portions 57c when the connection terminal 2 is inserted between the two claw portions 57c, so that the connection terminal 2 is inserted into the connected terminal 5c. It becomes easy to be done.

  In addition, each base part 55a, 55b, 55c of the to-be-connected terminals 5a, 5b, 5c is the structure similar to the base 55 of the to-be-connected terminal 5 in the connection structure 100 of embodiment.

DESCRIPTION OF SYMBOLS 1 Terminal device 10 Contact switching device 11 Contact part 14 Opening and closing mechanism 100 Connection structure 2 Connection terminal 3 Body 4 Groove 41 Edge (groove edge)
42 Tapered portion 43 Flat portion 44 Inclined surface 5, 5a to 5c Connected terminal 55, 55a to 55c Base portion 56, 56a to 56c Arm portion 57, 57a to 57c Claw portion E1 Predetermined direction L1 width (maximum width of groove)
L3 Shortest distance T1 Thickness (connection terminal thickness)
T2 thickness (dimension in the direction perpendicular to one direction and the direction in which the two arms are aligned in the two claws)

Claims (10)

A plurality of connected terminals having a base, two arm portions projecting in one direction from the base portion, and two claw portions provided at respective tips of the two arm portions and projecting in directions approaching each other; A terminal device to be connected,
Body,
A plurality of plate-like connection terminals protruding in a predetermined direction from the body;
With
Each of the plurality of connection terminals is disposed between the two arm portions of the connection terminal corresponding to the plurality of connection terminals on a one-to-one basis among the plurality of connection terminals, and is in contact with the two claw portions. ,
Each of the plurality of connection terminals is provided with a groove having a width that decreases from the tip toward the body. The width of the groove is a dimension in the width direction orthogonal to the predetermined direction in each of the plurality of connection terminals,
2. The terminal device according to claim 1, wherein a maximum width of the groove is larger than a dimension in a direction orthogonal to the direction in which the two arm portions are arranged in the two claw portions and the one direction. The terminal device according to claim 1, wherein an edge of the groove includes a tapered portion that intersects the predetermined direction. The terminal device according to any one of claims 1 to 3, wherein the groove has a symmetric shape centered on an axis of symmetry along the predetermined direction. Each of the plurality of connection terminals is provided with an inclined surface that decreases the thickness of each of the plurality of connection terminals toward the edge of the groove. The terminal device according to item. 6. The terminal device according to claim 1, wherein thickness directions of at least two connection terminals of the plurality of connection terminals intersect each other. The terminal device according to any one of claims 1 to 6,
A contact portion provided in an electric circuit including two connection terminals among the plurality of connection terminals in the terminal device;
An opening and closing mechanism for opening and closing the contact portion;
A contact switchgear characterized by comprising: The terminal device according to any one of claims 1 to 6, or the contact switching device according to claim 7,
The plurality of connected terminals;
With
A connection structure, wherein a thickness direction of each of the plurality of connection terminals is parallel to a direction in which the two arm portions in contact with each of the plurality of connection terminals are arranged. The connection structure according to claim 8, wherein an edge of the groove in each of the plurality of connection terminals includes a flat portion orthogonal to the predetermined direction. The shortest distance between the two claw portions is smaller than the thickness of the plurality of connection terminals in a state where the plurality of connection terminals are not connected to the plurality of connected terminals. The connection structure described in 1.

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