JP5478192B2 - Switch with pillar terminal - Google Patents

Description

  The present invention relates to a switch with a pillar terminal, and more particularly to a switch with a pillar terminal having improved bounce performance.

  There is a two-contact type switch box that switches two circuits by one action. In particular, a switch box having a pillar terminal for mechanically fixing and electrically connecting a connection terminal is widely used as a home switch. In such a switch box with a pillar terminal, there is a limit to downsizing the pillar terminal for convenience, but there is a strong demand for downsizing of the switch box, and it is necessary to downsize contact terminals and the like. Further, the switch is usually turned on and off frequently, and improvement in durability is always required.

One factor that determines the life of a switch is the wear of contacts. Consumable of contact is often generated by the contact is attacked by an arc that occurs when the switch is in the off-filled. In particular, when the switch is momentarily disconnected due to a reaction when the switch is turned on and a bounce that is connected again occurs, the arc generation time becomes longer, and the erosion of the contact becomes severe.

  Thus, a technique has been proposed that reduces the weight of the contact and shortens the bounce time by increasing the flexibility of the contact (see, for example, Patent Document 1). According to Patent Document 1, “an opening for reducing the mass, such as a hole or a slit, is provided on the side half of the side on which the operating portion of the switching element is provided, and the approximate portion between the operating portion of the switching element and the movable contact is provided. Since a vertically long slit is provided in the middle part, it is possible to reduce the mass of the switching element and reduce the rigidity while securing the current path of the switching element. As a result, the bounce time when the switch is turned on can be shortened, and an arc is generated. The time can be shortened, and the contact wear can be reduced to prevent deterioration of the switching performance [0026].

JP-A-5-298963

  By the way, the technique shown in Patent Document 1 aims to shorten the bounce time by improving the flexibility of the movable contact of the switching element. However, depending on the structure of the switch, there are cases where it is difficult to give flexibility to the movable contact side.

  Therefore, as a structure having flexibility on the fixed contact side, a fixed contact terminal having a structure as shown in FIGS. 7A to 7C is used. This fixed contact terminal 110 extends in the longitudinal direction from the upper side (hereinafter simply referred to as “upper”) in the thickness direction of the main body portion 111 integrated with the pillar 120, and further downward (hereinafter simply referred to as “ It is provided with an arm portion 115 that is bent downward). A fixed contact 112 is provided via a connecting portion 113 formed in a shorter direction from the arm portion 115. The connecting portion 113 is formed thinner than the arm portion and has flexibility. Because of this structure, the connecting portion 113 has a structure that is easily bent in an arc shape in a plane parallel to the mounting plane, with the joint portion 113a with the arm portion 115 as a fulcrum. The fixed contact terminal 110 is attached to the case 140 as shown in FIG. 8, and contacts the switch contact 132 (movable contact) provided on the switch handle 131 in accordance with the switching of the switch button 135 to constitute a circuit. To do.

  As shown in FIG. 9, the switch handle 131 switches the fixed contact 112 that contacts the switch contact 132 in conjunction with the switch button 135. Specifically, a fulcrum 136 is provided below, and the switch handle 131 is reciprocated in an arc as indicated by an arrow in a plane perpendicular to the mounting surface and parallel to the longitudinal direction. The fixed contact 112 that contacts is switched. Accordingly, the switch contact 132 provided in the switch handle 131 also moves in an arc shape as shown by an arrow in a plane perpendicular to the mounting surface and parallel to the longitudinal direction, and comes into contact with the fixed contact 112.

  However, as described above, the connecting portion 113 to which the fixed contact 112 is attached has a structure that is easily bent in a circular arc shape in a plane parallel to the attachment plane. Therefore, when the contact is switched, the switch contact 132 is changed to the fixed contact 112. The effect of absorbing the impact generated by the collision using the flexibility is not sufficient. Accordingly, the bounce time shortening effect is also insufficient.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a switch with a pillar terminal that has a long lifetime by suppressing contact wear.

A switch with a pillar terminal according to the present invention includes a case, a pillar terminal to which an electric wire is mechanically fixed and electrically connected, a fixed contact terminal electrically connected to the pillar terminal, a switch button, And a switch contact that swings in a fixed direction in conjunction with the switch button. A body portion connected to the pillar terminal, a fixed contact to be contacted with the switch contact, extending from the body portion, and a contact portion to contact with the fixed contact and the body portion, and the contact portion The fixed contact terminal includes a fixed portion that extends from the main body so as to branch and is fixed to the case, and the connecting portion is flexible in the same direction as the swinging direction of the switch contact. The connecting portion projects the fixed contact to a side opposite to the side facing the fixed portion so that the fixed contact does not face the main body in the swinging direction of the switch contact. It is characterized by.

  According to the above configuration, since the connecting portion has flexibility in the same direction as the swinging direction of the switch contact, it is easy to absorb an impact when the fixed contact is brought into contact with the swinging switch contact, and bounce is performed. Can be suppressed. Therefore, since arc generation is suppressed, contact wear can be suppressed.

  In the switch with pillar terminals according to the present invention, it is preferable that the connecting portion is formed of a plate-like member extending from the main body portion in a direction substantially perpendicular to the swinging direction of the switch contact. According to the above configuration, the connecting portion is constituted by the plate-like member extending from the main body portion in a direction substantially perpendicular to the swinging direction of the switch contact. It functions as a flexibility in the same direction as the swinging direction. Moreover, since it is a simple structure which extends a plate-shaped member from a main-body part, it becomes easy to manufacture.

  In the switch with pillar terminal according to the present invention, the main body portion is inserted into the pillar terminal, and the electric wire is mechanically pressed and includes an electric wire holding portion for holding the electric wire. It is preferable that the electric wire holding surface which is a surface which contacts has the concave shape for concentrating the said electric wire in the center.

  According to the above configuration, the electric wire holding surface, which is a surface that comes into contact with the electric wire, has a concave shape for concentrating the electric wire in the center. For example, when the electric wire is composed of stranded wires, there are a plurality of electric wires. Even if it is formed with the conducting wire, fixing can be facilitated by concentrating the entire electric wire at the central portion.

It is preferable that the electric wire holding part is provided with a concave groove for facilitating holding of the electric wire mechanically pressed.
According to the said structure, the ditch | groove is provided in the electric wire holding part. Therefore, the mechanically pressed electric wire is fitted into the concave groove, so that the electric wire is more reliably held on the electric wire holding surface. Therefore, the electric wire can be held more easily.

  ADVANTAGE OF THE INVENTION According to this invention, the switch with a pillar terminal extended in life can be provided by suppressing consumption of a contact.

It is drawing explaining one Embodiment of a switch with a pillar terminal concerning the present invention, and is a perspective view of a fixed contact terminal. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing explaining one Embodiment of the switch with a pillar terminal concerning this invention, Comprising: It is a three-plane figure of a fixed contact terminal, (a) is a top view, (b) is a front view, (c) Is a right side view. It is drawing explaining one Embodiment of a switch with a pillar terminal concerning this invention, Comprising: It is a top view which shows the state which attached the stationary contact terminal to the case. It is drawing explaining one Embodiment of a switch with a pillar terminal concerning this invention, Comprising: It is a top view which shows a case. It is drawing explaining one Embodiment of a switch with a pillar terminal concerning this invention, Comprising: It is sectional drawing by a surface perpendicular | vertical to a mounting surface and parallel to a longitudinal direction. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing explaining the example of a change of the switch with a pillar terminal concerning this invention, Comprising: It is a three-plane figure of a fixed contact terminal, (a) is a top view, (b) is a front view, (c) is It is a right view. It is drawing explaining the conventional switch with a pillar terminal, Comprising: It is a three-plane figure of a fixed contact terminal, (a) is a top view, (b) is a front view, (c) is a right view. . It is drawing explaining the conventional switch with a pillar terminal, Comprising: It is a top view which shows the state which attached the stationary contact terminal to the case. It is drawing explaining the conventional switch with a pillar terminal, Comprising: It is sectional drawing by a surface perpendicular | vertical to a mounting surface and parallel to a longitudinal direction.

  Hereinafter, an embodiment of a switch with a pillar terminal embodying the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIGS. 2A to 2C, a fixed contact terminal 10 used for a switch with a pillar terminal includes a main body portion 11 connected to the pillar terminal, and a fixed contact 12 contacted with the switch contact. And a connecting part 13 for connecting the main body part 11 and the fixed contact 12 and a fixing part 14 fixed to the case. Here, the connecting part 13 is characterized by having flexibility in the same direction as the swinging direction of the switch contact. The connecting portion 13 is a plate-like member extending from the main body portion 11 in a direction substantially perpendicular to the swinging direction of the switch contact. Furthermore, since the fixed contact terminal 10 including the main body 11 and the fixed portion 14 has a structure that can be formed by punching and bending a plate-like member, it is easy to manufacture.

  Specifically, the connecting portion 13 is formed by branching from the fixing portion 14 and extending downward from the arm portion 15 extending in the longitudinal direction from the main body portion 11. With the joint 13a as a fulcrum, it has the property (flexibility) that it is easy to bend in an arc shape in a plane perpendicular to the mounting surface and parallel to the longitudinal direction. Moreover, since it is extended from the arm part 15 independently from the fixing | fixed part 14, even if the arm part 15 is fixed, flexibility is not influenced.

  The main body 11 includes a wire holding portion 11b that is inserted into the pillar terminal and mechanically presses the electric wire and holds the electric wire, and a main body upper portion 11a that extends upward from the electric wire holding portion 11b. As shown in FIG. 3, the electric wire holding part 11b is inserted into the pillar terminal 20, and the electric wire is pressed against the electric wire holding part 11b with a screw 50, thereby forming a circuit. The electric wire holding surface 11c, which is the surface that the electric wire actually contacts in the electric wire holding portion 11b, has a concave shape for concentrating the electric wire in the center. Therefore, even when the electric wire is formed of a plurality of conducting wires, such as when the electric wire is constituted by a stranded wire, when the electric wire is pressed by the screw 50, the entire electric wire is concentrated at the central portion, and is easily fixed. It becomes.

  Further, the electric wire holding part 11b is provided with a concave groove 11s. Therefore, when the electric wire is pressed by the screw 50, the electric wire fits into the concave groove 11s, and is more reliably held on the electric wire holding surface. Therefore, the electric wire can be held more easily.

  As shown in FIG. 3, the fixed contact terminal 10 is attached to the case 40, and contacts the switch contact 32 (movable contact) provided on the switch handle 31 in accordance with the switching of the switch to form a circuit. . Since the fixed contact terminal 10 includes the fixed portion 14, it can be easily fixed to the case 40. Specifically, as shown in FIG. 4, the case 40 is provided with a bottomed hole 41 corresponding to the shape of the fixing portion 14, and the fixing portion 14 is fixed to the case 40 by being inserted into the bottomed hole 41. It has a structure. Therefore, the fixed contact terminal 10 can be easily fixed to the case by inserting the fixed portion 14 into the bottomed hole 41.

  As shown in FIG. 5, the switch handle 31 switches the fixed contact 12 that contacts the switch contact 32 in conjunction with the switch button 35. Specifically, the fulcrum 36 of the switch handle 31 is provided below, and the switch handle 31 can reciprocate in a circular arc shape as indicated by an arrow in a plane perpendicular to the mounting surface and parallel to the longitudinal direction. It has become. As the switch handle 31 reciprocates, the fixed contact 12 with which the switch contact 32 contacts is switched. Therefore, the switch contact 32 provided in the switch handle 31 also moves in an arc shape as shown by an arrow in a plane perpendicular to the mounting surface and parallel to the longitudinal direction, and comes into contact with the fixed contact 12.

  Here, as described above, the connecting portion 13 to which the fixed contact 12 is attached has a structure that is easily bent in an arc shape in a plane perpendicular to the attachment surface and parallel to the longitudinal direction. That is, when switching the contact, the switch contact 32 can bend in the same direction as the moving direction of the switch contact 32. Therefore, the impact generated when the switch contact 32 collides with the fixed contact 12 is effectively absorbed using the flexibility. can do. Accordingly, the bounce time shortening effect is greater than that of the conventional one, and the contact wear can be suppressed.

According to the switch with pillar terminal of the embodiment, the following effects described above can be obtained.
(1) In the above embodiment, since the connecting portion 13 has flexibility in the same direction as the swing direction of the switch contact 32, the impact when the fixed contact 12 is brought into contact with the swinging switch contact 32 is absorbed. And bounce can be suppressed. Therefore, since arc generation is suppressed, contact wear can be suppressed.

  (2) In the above embodiment, the connecting portion 13 is constituted by a plate-like member extending from the main body portion 11 in a direction substantially perpendicular to the swinging direction of the switch contact 32. Flexibility functions as a flexibility in the same direction as the direction of oscillation of the switch contact 32. Moreover, since it is a simple structure which extends a plate-shaped member from the main-body part 11, it becomes easy to manufacture.

(3) In the above embodiment, since the fixed portion 14 is fixed to the case 40 by being inserted into the bottomed hole 41, the fixed contact terminal 10 can be easily fixed to the case 40.
(4) In the said embodiment, since the electric wire holding surface 11c which is a surface which an electric wire contacts has a concave shape for concentrating an electric wire in the center, for example, when an electric wire is comprised by the strand. Even if the electric wire is formed of a plurality of conductive wires, fixing can be facilitated by concentrating the entire electric wire in the central portion.

  (5) In the above embodiment, the electric wire holding portion 11b is provided with the concave groove 11s. Therefore, when the electric wire is pressed by the screw 50, the electric wire fits into the concave groove 11s, and is more reliably held on the electric wire holding surface. Therefore, the electric wire can be held more easily.

In addition, you may change the said embodiment as follows.
-In above-mentioned embodiment, although the fixing | fixed part 14 is being fixed to the case 40 by being inserted in the bottomed hole 41, another structure may be sufficient. For example, the hole for fixing the fixing portion 14 is not limited to the bottomed hole 41 and may be a through hole. Since it is sufficient that the fixed contact terminal 10 is easily fixed to the case 40, any of them may be used in consideration of ease of manufacture, strength of the case 40, and the like.

  In the above embodiment, as shown in FIGS. 1 and 2, the end of the connecting portion 13 is extended in the short direction and the fixed contact 12 is provided in such a portion. Good. Since it is only necessary to form the connecting portion 13 so as to be easily bent in an arc shape in a plane that is perpendicular to the mounting surface and parallel to the longitudinal direction, for example, as shown in FIGS. You may enlarge the width | variety of the connection part 13 in a transversal direction. In this case, in order to give flexibility so that it is easy to bend in the same direction, for example, a known configuration such as making the thickness of the connecting portion 13 smaller than the arm portion 15 or using a member having high flexibility for the connecting portion 13 is used. It may be used.

  In the above embodiment, as shown in FIG. 1 and FIG. 2, four concave grooves 11s are provided in the short direction, but other configurations may be used. The shape and number are not particularly limited as long as it has an effect of facilitating holding of the electric wire. Further, if there is no particular problem even if there is no concave groove 11s, the cost may be reduced by omitting it.

  In the above embodiment, the electric wire holding surface 11c has a concave shape, but the shape of the concave surface is not limited to the shape shown in FIGS. 1 and 2 as long as the entire electric wire is concentrated in the central portion. . Further, if there is no particular problem even if there is no concave shape, the cost may be reduced by omitting it.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) In the switch with a pillar terminal according to the present invention, the case is provided with a through hole or a bottomed hole corresponding to the shape of the fixed part, and the fixed part is inserted into the through hole or the bottomed hole. Is preferably fixed to the case.

  Therefore, according to the invention described in (a), since the fixed portion is fixed to the case by being inserted into the through hole or the bottomed hole, the fixed contact terminal can be easily fixed to the case.

  Since the present invention relates to a switch with a pillar terminal with improved bounce performance, it can be widely used in industry.

  DESCRIPTION OF SYMBOLS 10 ... Fixed contact terminal, 11 ... Main body part, 11a ... Upper part of main body, 11b ... Electric wire holding part, 11c ... Electric wire holding surface, 11s ... Groove, 12 ... Fixed contact, 13 ... Connection part, 13a ... Joint part, 14 ... Fixed part, 15 ... arm part, 20 ... pillar terminal, 31 ... switch handle, 32 ... switch contact, 35 ... switch button, 36 ... fulcrum, 40 ... case, 41 ... bottom hole, 50 ... screw, 110 ... fixed contact Terminals 111... Main body portion 112 .. Fixed contact 113. Contact portion 113 a. Joint portion 115. Arm portion 120. Pillar 131. Switch handle 132. Switch contact 135 135 Switch button 136. 140: Case.

Claims (4)

Case and
Pillar terminals to which the electric wires are mechanically fixed and electrically connected;
A fixed contact terminal electrically connected to the pillar terminal;
A switch button,
In a switch with a pillar terminal provided with a switch contact that swings in a certain direction in conjunction with the switch button,
A main body connected to the pillar terminal;
A fixed contact that contacts the switch contact;
A communication portion extending from the main body portion and connecting the main body portion and the fixed contact;
The fixed contact terminal includes a fixed portion that extends from the main body portion so as to branch from the communication portion and is fixed to the case.
Wherein the communicating portion have a Shiwasei in the same direction as the direction of the swinging of the switch contacts,
The connecting portion projects the fixed contact to a side opposite to the side facing the fixed portion so that the fixed contact does not face the main body in the swinging direction of the switch contact. A switch with a pillar terminal. The switch with a pillar terminal according to claim 1, wherein the connecting portion includes a plate-like member extending from the main body portion in a direction substantially perpendicular to a swinging direction of the switch contact. The main body includes an electric wire holding portion that is inserted into the pillar terminal and holds the electric wire by being mechanically pressed.
The electric wire holding surface, which is a surface with which the electric wire contacts in the electric wire holding portion, has a concave shape for concentrating the electric wire in the center.
The switch with a pillar terminal according to claim 1 or 2. The electric wire holding part is provided with a concave groove for facilitating holding of the electric wire mechanically pressed,
The switch with a pillar terminal according to claim 3.

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