JPH06349371A - Switch - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a switch that can be operated stably with a small operating force, has a long switching life, and is highly practical. [Arrangement] A roller contact 5 is provided as an armature, and these are held so as to be in rotational contact with the tip of a connecting arm 3, and the other end 11 of the connecting arm 3 is capable of a predetermined swing with respect to a support 12. In addition, the pivot contact was made to maintain the contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a switch which can reduce the operating force and can be opened and closed many times.

[0002]

20 and 21 show an outline of a conventional switch and a contactor. In the figure, 60 is a movable contactor, 61 is a fixed contactor, and the fixed contactor 61 has an armature at its tip. A finger 63 whose end is held by a guide 65 and a guide 65 is provided so as to surround the finger 63, and a spring 66 and a spring are provided near the fixed contact point between the finger 63 and the guide 65, respectively. 67 are attached and are electrically connected by the contact pressure required for each.

Next, the operation will be described. When the movable contactor 60 connected to the operation device 62 starts to move from the open state to the closed direction, for example,
The operation load is small until the movable contact 60 comes into contact with the fixed contact 61, but as the two contacts come into contact with each other, the contacts come into sliding contact with each other, resulting in a large operation resistance. In addition, the surfaces of the contacts are silver plated or silver alloyed for lower contact resistance. However, silver or silver alloy is a very soft metal, and the sliding resistance becomes very large. On the other hand, in the operation from the closed state to the open state, driving is performed against the static friction resistance which becomes the largest at the initial stage of the operation, and thereafter, substantially the same operation force is required until the contactor is opened. Further, since the one having a large current capacity requires a stronger contact force, the above tendency becomes more remarkable. Therefore, seizure easily occurs in the contact portion even in the presence of the lubricant.

Further, since the operating load fluctuates greatly in both opening and closing, the capacity of the operating device becomes large, and it becomes necessary to utilize the inertial effect of the movable part for high speed operation. Control is needed. In addition, the high frictional resistance due to the sliding contact not only abruptly abrades the metal on the surface, but also the metal abrasion powder scatters to the surroundings and impairs the insulation performance.

[0005]

Since the conventional switch is constructed so that the contact portion serving as an armature is in sliding contact, a large opening / closing operation force is required and the degree of operation is high. Scatter metal powder on. For this reason, it is difficult to open and close many times, or it is necessary to treat a special conductive film. In addition to the fact that the lubricant is always indispensable, there is a problem in that the lubricant, which deteriorates with long-term use, may conversely intervene as a foreign substance in the contact portion to cause non-contact.

The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a switch which has a reduced operating force and a long switching life and which is excellent in practical performance.

[0007]

In the switch according to the present invention, one of the contacts serves as a roller contact so that the contact portion serving as an armature makes a rolling contact, and a contact arm for supporting and guiding the roller contact is provided. A roller contact is held at the tip and pivot contact is made at the other end so that stable contact can be maintained even when there is relative displacement that tends to occur when the fixed contact and the movable contact open and close. It was designed to be maintained.

Further, in the switch according to the present invention, one of the contacts is a roller contact which makes a rolling contact so that the contact portion which becomes an armature makes a rolling contact, and the contact arm which supports and guides the roller contact. A roller contact consisting of two right and left ends is rotatably held by a pin to obtain multipoint contact, and a spring is provided so that contact pressure acts on the roller contact and the connecting arm. By making the contact with the support at the other end a pivotal contact, even if there is a relative displacement that tends to occur when the fixed contact and the movable contact open and close, a stable contact is always made. Is to maintain.

Furthermore, the switch according to the present invention is
One of the pair of movable contacts and one of the fixed contacts, which serves as the armature on the side of the fixed contact, is a roller contact system that makes rolling contact with a small contact sliding resistance, and is pivoted from both sides of this roller contact. Even if there is a relative displacement that is unavoidable when the fixed contact and the movable contact are opened and closed, the roller contact is centered on the support center by providing the centering part for supporting and guiding and forming it on the tip of the connecting arm. On the other hand, the rolling surface oscillates following the movement to maintain a stable contact, and in addition, the wear of the contact can be reduced to a practically negligible level.

[0010]

In the switch according to the present invention, the pair of movable contacts and one of the fixed contacts, which serves as an armature on the side of the fixed contact, have roller contacts so that the contact sliding contact resistance becomes a rolling contact. It is provided on the tip of the connecting arm that holds and guides this roller contact, and the other end of this connecting arm is held on a support base so that it makes pivotal contact and the tip allows appropriate swinging and rotation. The stable contact is maintained even when there is a relative displacement that is unavoidable when the fixed contact and the movable contact are opened and closed. In addition, contact wear is practically negligible. Can be reduced.

[0011]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 1 is a movable contactor, 2 is a fixed contactor, and the fixed contactor 2 is rotatable on a shaft pin 4 supported between the tip ends of a pair of connecting arms 3 on both sides. And two roller contacts 5 that are held in the rotary contact 5 and are in rotary contact with the movable contact 1 in the opening / closing operation. The roller contact 5 has convex portions 7 formed on both sides of the rotation center axis,
The convex portion 7 has an inner diameter hole slightly larger than the outer diameter of the shaft pin 4, and the outer diameter thereof is set smaller than the outer diameter 8 of the roller contact 5. And both end surfaces of this convex portion 7 are
The roller contact 5 comes into contact with the inner surface 9 of the tip end portion of the connecting arm 3 disposed at the left and right ends of the roller contact 5, and the convex portions of the adjacent roller contacts 5 are attached to the shaft pin 4 on the outer side of the connecting arm, for example, one side. The springs 10 installed so as to be inserted are pressed by reaction forces generated by the compression, and the roller contacts 5, the connecting arms 3 and the roller contacts 5 are electrically connected to each other. The left and right connecting arms 3 form a parallel circuit and are electrically connected.

The other end 11 of the connecting arm 3 has a hole 1 having a diameter such that an appropriate gap is formed between the holding base 12 and the outer diameter of the shaft pin 13.
4 is formed, a play 15 is provided in the longitudinal direction of the shaft pin 13 as in the radial direction, and the width of the receiving portion 16 is set smaller than the overlapping dimension of the roller contact 5.
The tip end is supported by the shaft pin 13 so as to have an appropriate degree of freedom. Further, the other end 11 of the connecting arm 3 is formed with a contact part 17 having an arc surface or a spherical end surface, and the support base 1
It is in contact with the second receiving portion 18. Further, a hole 19 is provided in the middle portion of the connecting arm 3 and a pin 20 is inserted therethrough. One end of a tension spring 21 is hooked on this pin 20, and the other end is hooked on a corresponding pin 23 of a roller contact unit 22 arranged to face each other, so that the rolling contact pressure of the roller contact 5 and the contact portion 17 are Obtain the load required for each contact pressure. In addition to this, as a method of applying contact pressure to both contact points, it is easy to mount compression springs on the opposite sides of the contact points.

As described above, the contact portion serving as one of the armatures is composed of a pair of rotatable roller contacts which are rolling contacts having a small contact sliding resistance, and the other end of the connecting arm serves as a pivot contact. Since it is swingably held on the support table, the contact sliding resistance is small, the operating force is greatly reduced, stable contact is maintained, and contact point wear is minimized. You will get it.

Further, by forming a small-diameter convex portion in the central portion on the side where the roller contact and the connecting arm come into contact, the contact surface between the convex portion of the roller contact and the side surface of the connecting arm has an appropriate size. The ring shape is limited, and the average diameter is set to the minimum, so that a high contact pressure can be obtained with a small load. To be Therefore, the sliding resistance in this portion is small, and the rolling of the roller contact is easily performed. In addition, whether the value of the sliding resistance is almost equal to the rolling resistance of the roller contact,
By setting it slightly smaller, rolling contact with partial sliding can be achieved on the rolling surface. Therefore, stable contact can be maintained even if the rolling surface is used for a long period of time or when the rolling surface is deteriorated in a corrosive environment or the like.

Example 2. FIGS. 3 and 4 are configuration diagrams corresponding to FIGS. 1 and 2 in the case where the movable contactor 1 has a cylindrical outer shape and moves straight in the left-right direction in the drawings. In this figure, the roller contact 5 has a cylindrical outer shape of the movable contact 1, and its outer diameter portion forms an arc surface having a radius substantially equal to the outer dimension of the movable contact 1. Shows that it can be easily constructed by symmetric arrangement.

Embodiment 3. In FIG. 5, the roller contact 5 has a recess 31 formed at the inner center of rotation, so that the two roller contacts 5 face each other.
A washer 32 is inserted and disposed between the recesses 31, and a spring 34 is mounted in each recess 31 between the washers 32, and the shaft pin 4 is mounted so as to communicate these members. A gap is formed on both sides of the washer 32 so that the left and right roller contacts 5 can be easily rotated individually.
Further, the spring 34 is set by compressing between the convex portion 7 of the roller contact and the connecting arm 3 so as to have a contact pressure required for conducting contact.

As described above, two roller contacts are mounted between the connecting arms on both sides, and a recess is formed in the center of the roller contact on the side opposite to the contacting side of the connecting arms. The elastic members are arranged to face each other so that the members are substantially accommodated, and the elastic members are compressed so as to obtain the necessary reaction force by setting the length of the shaft pin arranged to communicate these members.
Since each roller contact and the connecting arm are configured to make electrical contact with each other, the tip portion where the electric field is concentrated exposes a member that is rich in unevenness like a coil spring and that easily causes electric field concentration. Since it does not have a shield, the shield can be omitted and the device can be made compact.

Example 4. Next, in FIG. 6, reference numeral 2 denotes a fixed contactor, and the fixed contactor 2 is provided with at least two roller contacts 5 on one shaft pin 4 and is connected to each of the positions located at the end of each roller contact 5. The arm 3 is provided, and the spring 42 is provided so as to elastically press the roller contact 5 between the adjacent connecting arms 3.

As described above, two roller contacts are arranged on one shaft pin in a skewed shape in the axial direction, and the roller contacts including the two connecting arms located on both sides of each of the roller contacts. Another connecting arm is arranged at an intermediate position between adjacent connecting arms, an elastic member is provided between at least adjacent connecting arms of this connecting arm, and each roller contact is arranged on both sides. Since it is configured to form a parallel current circuit, all roller contacts are connected with low resistance, and the current is shunted to the left and right almost evenly, so the contact state is maintained even when a large transient current flows. Holds stable.

Example 5. Further, in FIG. 7, the outer diameter portion of the roller contact 5 that makes rolling contact with the movable contactor 1 is formed with large diameter portions 52 serving as rolling contact surfaces at both ends in the axial direction, and one roller contact is always provided. The number of contact points with the movable contact per hit is two.

As described above, since the outer diameter portion of the roller contact, which makes rolling contact with the movable contactor, has the concavo-convex shape in which both ends in the width direction have a large diameter and the central portion has a small diameter,
The number of contact points between the roller contact and the movable contact is two, and the energization performance between the movable contact and each roller contact can be improved.

Embodiment 6. Next, FIGS. 8 and 9 show another embodiment of the present invention. In FIGS. 8 and 9, 1 is a movable contact, 2 is a fixed contact, and this fixed contact 2 is two roller contacts. 5 is rotatably supported by a shaft pin 4 so as to pinch the left and right ends of one connecting arm 3, and the roller contact 5 and the connecting arm 3 are set by springs 6 arranged at both ends of the shaft pin 4. It is pressed by the applied reaction force to maintain the electrical contact. At the center of rotation of each roller contact 5, a convex portion 7 is formed on the side in contact with the connecting arm 3. A concave portion 33 is formed outside the center of rotation of the roller contact 5, and a spring 6 is mounted in the concave portion 33 in a compressed state so that the shaft pin 4 can pass through the concave portion 33. A contact pressure is applied between the contact 5 and the connecting arm 3 in correspondence with the reaction force of the elastic member, and a necessary current-carrying capacity is obtained. Also, a hole 1 is provided on the support side of the connecting arm 3.
4 is provided, and the support pin 13 is passed over the support arm 24 of the support base 12, and the connection arm 3 is held in the recess 25 in the center of the support arm 24. An arcuate convex portion 26 is formed on the support end side of the connecting arm 3, and the bottom surface 27 of the concave portion 25 is a contact spring inserted between the spring receiver 28 mounted on the support base 12 and the connecting arm 3. It is pressed by 29 to secure the current-carrying capacity.

As described above, the pair of movable contacts and one of the fixed contacts, which serves as an armature on the side of the fixed contact, are provided with the roller contact system so as to make rolling contact with which contact sliding resistance is reduced. In addition, since it is provided on both sides of the tip of one connecting arm that holds and guides two roller contacts, a multipoint contact type contactor unit capable of energizing a large current can be constructed in a small size.

Example 7. In FIGS. 10 and 11, the fixed contactor 2 includes two connecting arms 3 and two roller contacts 5, and the roller contacts 5 of the shaft pin 4 communicating with the hole 30 formed at the tip of the connecting arm 3. An elastic member 35, which is set to have a size with a proper gap with respect to the diameter and is supported, is arranged so as to be pinched by the connecting arm 3, and an axis against the elasticity of the elastic member 35. The pin 4 is used for compression. As a result, the left roller contact and the left connecting arm, and the right roller contact and the right connecting arm are respectively rotatable within a limited range and individually contact each other. In addition, the shaft pin 13 penetrates through the hole 14 provided at the other end of the connection arm 3 to support the support base 1
The connection arm 3 is held by 2. 7 is the connecting arm 3.
Is a convex portion that contacts with a ring shape.

As described above, the connection arms are provided in parallel so as to correspond to the left and right roller contacts as if left and right independently, and the side surfaces of the roller contact and the connection arm are ring-shaped with an optimized size. Even if the movable contact moves while swinging left and right, the contact surface is formed into a conical surface if necessary and a spherical surface if necessary. Since the roller contact and the connecting arm can be reliably followed together, a stable contact state can always be maintained, and no protruding shape is formed by the spring and the support pin at the tip. Therefore, it is possible to obtain a device which can be formed in a small size and in which electric field concentration hardly occurs.

Example 8. In FIG. 12, two roller contacts 5 are arranged so as to be in pressure contact with the left and right of the open end of the tip of the U-shaped connecting arm 3 formed of a member having conductivity and elasticity, and are pivotally rotatable. 4, the roller contact 5 and the connecting arm 3 are communicated with each other, and a reaction force obtained by appropriately compressing and deforming the open end of the U-shaped connecting arm 3 by the shaft pin 4 is applied to the roller contact. 5 is used as the contact pressure required between the support arm 3.

As described above, the two roller contacts are arranged outside the open end of the U-shaped connecting arm formed of a member having conductivity and elasticity, and the open end is compressed and deformed in the left-right direction. The reaction force obtained by this is taken as the contact pressure required between the roller contact and the connecting arm, and the open end of the U-shaped connecting arm is displaced by the shaft pin that rotatably supports this roller contact. Therefore, the individual springs can be omitted, and the flanges at both ends of the shaft pin are installed in the recesses formed outside the roller contact.
When the width is reduced and a plurality of contact units are provided in correspondence with the current capacity, the entire size can be reduced, and the electric field can be mitigated because there is no protrusion near the tip.

Example 9. Next, in FIGS.
Is a fixed contactor, and the fixed contactor 2 is provided with a hole 37 and a notch 38 in a key-shaped portion 36 at the tip of the connecting arm 3A formed in a substantially hook shape, and the connecting arm 3B is symmetrical with the connecting arm 3A. And has a hole 40 and a notch 41 in a hook-shaped portion 39 at the tip facing the connecting arm 3A, the connecting arms 3A and 3B are combined so as to intersect at the tip, and the connecting arms 3A and 3B are also formed.
From the width W of each arm, each key-shaped part 3
When the molding width dimensions X and Y of 6 and 39 are set large and combined, the key-shaped tips 43 and 44 are arranged and formed so as to be the outermost side. Holes 45 and 46 are formed in the hook-shaped tips 43 and 44, respectively, and the shaft pin 4 is inserted together with the holes 37 and 40 having a gap between the shaft contact 4 and the roller contacts 5 on both sides thereof. Is rotatably supported. Also, holes 14A and 14B are formed in the other ends 11A and 11B.
Are formed, and these are supported by the support pins 13 held by the support base 12. Reference numeral 47 is a pressure contact means for compressing both connection arms to press the key-shaped tips 43 and 44 and the roller contact 5 or the connection arms and the support base 12 to electrically connect them.

As described above, the two roller contacts are supported, and the two connecting arms which are current circuits are arranged so as to cross each other so as to be horizontally inverted, so that both ends thereof are parallel to each other. Since the length of one parallel part is longer than the other end and the roller contacts are arranged on the left and right outside of the short end of the one parallel part, the long part of the parallel part of both connecting arms is formed. Then, current flows in each of them, and an attraction force proportional to the product of the currents and the parallel distance acts on both conductors. Of this acting force, the suction force generated in the parallel portion of the conductor of the roller contact portion at the tip is small because the parallel conductor length of this portion is short, and therefore it is canceled out, and as a result, the roller contact and the connecting arm. The contact pressure increases effectively on both the left and right sides of the contact surface as the current increases.

Example 10. FIG. 15 shows another embodiment of the present invention. In FIG.
Is rotatably held by a support pin 4 by squeezing a roller contact 5 serving as an armature at the tip, and the connecting arm 3 is rotatably pivoted by a pin 13 held by a support base 12 at the other end side. Has been done. A hole 48 is provided at the center of both ends of the roller contact 5, and a cylindrical convex portion 49 is formed at both ends thereof, and the end 50 thereof is obtained with a radius centered on the rotation center line of the roller contact 5. It is formed in a spherical shape. Correspondingly, a spherical or conical recess 51 is formed at the tip on the side of the connecting arm 3 so as to match this. Reference numeral 10 denotes an elastic body, which is mounted by a usual method so as to press the connecting arms 3 arranged on both sides of the roller contact 5 to press the roller contact 5 and the connecting arm 3 to obtain a necessary contact pressure. ing. In the figure, as an example, a method of mounting the push spring 10 on one of the support pins 4 and compressing by the support pins 4 is shown. The same applies to the connecting means between the connecting arm 3 and the support 12.

With the above arrangement, the operation force in the contact stroke in which the fixed contact member and the movable contact member are brought into contact with each other is very small, and at the same time, the roller contact, which serves as an armature, is pivotally supported from both sides. Since the core part is provided, the rolling surface follows the movable part with respect to the center of the roller contact support, even when there is relative displacement that cannot be avoided when the fixed contact and the movable contact open and close. Since they swing and make contact, stable contact is always maintained. In addition, contact wear can be reduced to a level that can be practically ignored.

Embodiment 11. Next, in FIG. 16, a concave portion 53 deeply cut out from both sides is formed in the central portion of both ends of the roller contact 5, and a convex portion 54 having a spherical head is formed in the central portion of the concave portion 53. . Further, the connecting arm 3 is provided with a convex portion 56 corresponding to the concave portion 53 of the roller contact 5 and having a gap 55 suitable for allowing the swinging of the roller contact 5 as if the concave portion 53 is inserted. A spherical concave portion 57 is formed at the tip of the convex portion 56,
The concave portion 57 and the convex portion 5 formed on the roller contact 5.
4 are pressure-bonded to each other, and these are held by a supporting pin 4 communicating with each other via a spring 10.

As described above, since the pivot-shaped support portions are formed on both sides of the center of rotation so that the roller contacts serving as armatures can be supported at the minimum distance, the rocking resistance from the rolling portion can be reduced. Becomes smaller, so that the tracking performance with respect to the displacement between the fixed and movable contacts is greatly improved, and the contact state is stable during the displacement.

Example 12 In FIG. 17, at least two roller contacts 5 are made to communicate with one support pin 4, at least two connecting arms 3 are arranged at both ends thereof, and each roller contact 5 is pinched. Further, a connector 58 or a connecting arm 3 shown in FIG. 18 is provided between the roller contacts 5. In both of these, convex portions and concave portions corresponding to the roller contacts 5 are formed on both sides.

Example 13. Next, in FIG. 19, a cylindrical concave portion 59 having a spherical or conical tip is formed at the center of both sides of the roller contact 5, while a spherical convex portion having a spherical tip is formed on the connecting arm 3 side. The part 70 is formed. The cylindrical portion on the side of the roller contact 5 is made slightly larger than the diameter of the cylindrical portion of the connecting arm 3 to allow the roller contact 5 to appropriately swing, and to prevent excessive swing. In addition, regardless of the combination of the concave portion and the concave portion and the conical shape and the concave portion at the respective tip portions, the contact surface 71 is formed so as to be a surface including a ring shape at a position approaching the diameter portion of the cylindrical portion. Ensure the required contact surface size. An elastic body 10 is mounted between the connecting arms 3 so as to pinch the roller contact 5 to apply a necessary contact pressure between the connecting arm 3 and the roller contact 5, and the roller contact 5 is always centered. Acts to hold. Therefore, the contact angle of the concavo-convex shape of the contact portion between the connecting arm 3 and the roller contact 5 is set to an appropriate value.

[0036]

As described above, in the switch according to the present invention, the pair of movable contacts and one of the fixed contacts, which serves as an armature on the side of the fixed contact, are rolled to reduce the contact sliding resistance. A roller contact system is used to make contact, and this roller contact is provided at the tip of the connecting arm for holding and guiding, and the other end of this connecting arm is in pivotal contact, and the tip allows appropriate swinging and rotation. Since it is held on the support base so that the fixed contact and the movable contact are inevitably generated when opening and closing, for example, relative displacement such as left-right direction and twisting is involved. Even in such a case, not only can the contact be maintained within a limited range to maintain stable contact, but also contact wear can be reduced to a level that can be practically ignored.

Further, according to the present invention, by arranging the roller contacts on both left and right sides (outside) of the tip of one connecting arm, a multipoint contactor type contactor unit capable of conducting a large current can be provided. Can be made compact.

Further, according to the present invention, since the centering portion in which the roller contacts serving as the armatures are pivotally supported from both sides is provided, this may occur when the fixed contact and the movable contact are opened and closed. Even when there is an unavoidable relative displacement, the rolling surface oscillates and comes into contact with the movable portion with respect to the roller contact support center, whereby stable contact is always maintained.

[Brief description of drawings]

FIG. 1 is a front view showing a contact according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a front view showing a contact of Example 2 of the present invention.

FIG. 4 is a side sectional view of FIG.

FIG. 5 is a side sectional view of an essential part of a contactor according to a third embodiment of the present invention.

FIG. 6 is a side view of a main part of a contactor according to a fourth embodiment of the present invention.

FIG. 7 is a side view of essential parts of a contactor according to a fifth embodiment of the present invention.

FIG. 8 is a front cross-sectional view showing a contact of Example 6 of the present invention.

9 is a side sectional view of FIG.

FIG. 10 is a front sectional view of a main part of a contactor according to a seventh embodiment of the present invention.

11 is a side sectional view of FIG.

FIG. 12 is a side sectional view of an essential part of a contactor according to an eighth embodiment of the present invention.

FIG. 13 is a front sectional view of essential parts of a contactor according to embodiment 9 of the present invention.

FIG. 14 is a side sectional view of FIG.

FIG. 15 is a side sectional view of a main part of a contactor according to a tenth embodiment of the present invention.

FIG. 16 is a side sectional view of a main part of a contactor according to an eleventh embodiment of the present invention.

FIG. 17 is a side sectional view of a main part of a contactor according to a twelfth embodiment of the present invention.

FIG. 18 is a cross-sectional view of a connector used in Example 12.

FIG. 19 is a side sectional view of an essential part of a contactor according to embodiment 13 of the present invention.

FIG. 20 is a conceptual diagram of a conventional switch.

FIG. 21 is a side sectional view of a conventional contactor.

[Explanation of symbols]

1 Movable contactor 2 Fixed contactor 3,3A, 3B Connection arm 4,13 Axis pin 5 Roller contact 6,10,34,42 Spring 7,26,49,54,56,70 Convex part 11,11A, 11B connection The other end of the arm 12 Support stand 14, 14A, 14B, 19, 30, 37, 40, 4
5,46,48 holes 16 receiving part 17 contact part 18 receiving plate 20,23 pin 21 tension spring 22 roller contact unit 24 support arm 25,31,33,51,53,57,59 recessed part 27 bottom face 28 spring receiver 29 contact Spring 32 Washer 35 Elastic member 36,39 Key-shaped part 38,41 Notch 43,44 Key-shaped tip 47 Pressure contact means 50 End part 52 Large diameter part 55 Gap 58 Connector

Claims (13)

[Claims] 1. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature of one contact is between ends of connecting arms arranged on both sides. Is composed of a pair of left and right roller contacts that are supported in a pinching state on a shaft pin that is erected between the connecting arms via an elastic member. The other end of the connecting arm is rotatably supported by the supporting base held by the main circuit conductor so as to make rolling contact with the other contact pinched therebetween. A switch which is provided with a contact device configured to make an electrical pivot contact. 2. The roller contact mounted on the shaft pin in a state of being clamped between the connecting arms on both sides has ring-shaped convex portions concentric with the central axis at both ends thereof. The switch according to claim 1, wherein the convex portion is configured to come into contact with the side surface of the connecting arm in an annular shape. 3. A recess is formed inside each of the two roller contacts supported by a shaft pin extending between the connecting arms, and an elastic member is internally installed in this recess through a washer to face each other. The switch according to claim 1 or 2, wherein the switch is provided. 4. A plurality of roller contacts are provided on one shaft pin extending between the connecting arms, and the connecting arms are arranged at an intermediate position between these adjacent roller contacts, and at least adjacent connections are provided. 3. The switch according to claim 1, further comprising an elastic member that press-connects the roller contact and the connecting arm between the arms. 5. A concavo-convex structure in which two contact portions having large diameters at both ends in the width direction are formed in the outer diameter portion of the roller contact that makes rolling contact with the contactor and the central portion has a small diameter as a non-contact portion. The switch according to claim 1 or 2, wherein the switch has a shape. 6. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting a contact facing one of the contacts is pressed by an elastic member. Two roller contacts that make rolling contact with each other are arranged on the left and right outer sides of the tip of one connecting arm and are rotatably supported by a shaft pin, and the other end of this connecting arm serves as a main circuit conductor. A switch which is swingably supported by a supported support and is provided with a contact configured to make electrical contact. 7. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting one of the contacts facing one of the contacts is pressed by an elastic member. At least two connecting arms are arranged in parallel and are rotatably supported by a shaft pin so that they are in rolling contact with each other, and at least two connecting arms are arranged in parallel. An elastic member is provided to electrically connect the connection arm to each roller contact, and the other end of the connection arm is swingably supported by a support table held by the main circuit conductor. A switch which is configured so that the supporting base and the connecting arm are electrically contacted by the elastic force of the elastic member. 8. A shaft pin rotatably arranged by arranging two roller contacts so as to be in pressure contact with the left and right of the open end of the tip of a U-shaped connecting arm formed of a member having conductivity and elasticity. Supported by, and the reaction force obtained by compressing and deforming the open end of the U-shaped connecting arm with a shaft pin that communicates one roller contact, both ends of the connecting arm, and the other roller contact between the roller contact and the connecting arm. The switch according to claim 6, wherein the switch is used as a contact pressure required for. 9. Two roller contacts are arranged such that two hook-shaped connecting arms are arranged in parallel and intersect at their tips so that both ends of each are parallel. Is formed so that the length of the parallel part of the parallel part is longer than the other end, and the short end of one parallel part is arranged so as to be in pressure contact with the left and right, and is rotatably supported by a shaft pin. The switch according to claim 7, wherein an elastic member mounted between the connecting arms and the roller contacts is configured to apply a contact pressure to electrically connect the roller contacts. 10. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting one of the contacts facing one of the contacts is pressed by an elastic member. Roller contacts that make rolling contact with each other are squeezed at the tip and rotatably supported by shaft pins, and cylindrical protrusions are formed at both ends of the roller contact. It is formed on a spherical surface that has its center on the rotation center line of, and correspondingly, the connecting arm side is provided with a spherical or conical recess to match this, and the center of the roller contact has this center. A hole having a size slightly larger than the diameter of the shaft pin supported by the connecting arm and penetrating the portion is provided to allow the swinging of the roller contact itself and to prevent excessive movement. Closure. 11. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting one of the contacts facing one of the contacts is pressed by an elastic member. It is provided with a roller contact that makes rolling contact, is rotatably supported by an axial pin by pinching the roller contact at the tip, and forms a recess on both sides of the roller contact, and a spherical shape is formed at the center of the recess. A convex portion is formed, and the connecting arm is provided with a convex portion so as to be inserted into this concave portion in correspondence with the concave portion of the roller contact, and the concave portion is formed at the tip of this convex portion. The roller contact side is provided with a shaft pin that penetrates to hold the roller contact and the connecting arm, and a hole having a diameter larger than the diameter of the shaft pin that penetrates is formed on the roller contact side. The switch is characterized in that the roller contact itself is made to easily roll and rock. 12. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting one of the contacts facing one of the contacts is pressed by an elastic member. A roller contact that makes a rolling contact, is rotatably supported by a shaft pin by pinching the roller contact at the tip, and at least two roller contacts are provided with two connecting arms at both ends, A switch which is characterized in that a contactor unit constituted by penetrating one shaft pin through these and pinching each roller contact is one element. 13. A switch having a pair of relatively movable fixed contacts and a movable contact for opening and closing a circuit, wherein an armature contacting one of the contacts facing one of the contacts is pressed by an elastic member. A roller contact that makes rolling contact with each other, and a conical or spherical concave portion is formed at the center of both ends of the roller contact, and in conformity with this, a cylindrical convex portion having a spherical tip at the connecting arm side. In each of these cylindrical parts, the cylindrical part on the roller contact side is formed slightly larger than the diameter of the cylindrical part of the connecting arm, and an elastic body is mounted between the contact arms so as to clamp the roller contact. hand,
A switch characterized in that a necessary contact pressure is applied between the connecting arm and the roller contact and the roller contact is always held in the center.