JPH0737850U - Structure of Bending Joint of Breaking Bar in Circuit Breaker - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent lateral vibration when opening and closing the shutoff rod. [Structure] Coupling members 3 and 6 are fitted to the ends of the pair of blocking bars 1 and 2 on the joint side, respectively. The connecting members 3 and 6 include
A plurality of vertical joining plates 4 and 7 are provided on each end face. Then, the joint plates 4 and 7 are engaged with each other, and the pin 1 is formed in a skewered shape.
Insert 0. Further, the connecting members 3 and 6 are provided with lateral shake restricting plates 5 and 8 on the upper surfaces of the end portions, the lateral shake restricting plates 5 and 8 consisting of a plurality of parallel plates extending on the other connecting member. The lateral vibration restricting plates 5 and 8 sandwich one plate of the other side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a bent joint of a blocking rod in a circuit breaker.

[0002]

[Prior art]

 There are two types of barrier rods in a circuit breaker: one straight rod that does not bend and one that bends from the center. And the latter is used especially in places with height restrictions. The present invention relates to an improvement of this latter blocking rod.

In the conventional bent joint of this type of blocking rod, a pair of blocking rods are joined to each other by joining projecting joining plates to both end faces of the pair of blocking rods and then inserted into the holes formed in the joining plate. It was connected by a pin.

However, in this case, since the contact area between the joint plates is small and the pin also has a backlash, the blocking bar swings largely every time it is opened and closed.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and a plurality of joint plates protruding from the end faces of both blocking rods are provided, and pins are inserted in a skewer-like shape to pivotally connect them. By providing a lateral shake control plate in a staggered state on the upper surface of the end on the side where the blocking bar joins, it is possible to reliably prevent lateral runout when opening and closing. Structure of the bent joint of the blocking bar Is intended to be provided.

[0006]

[Means for Solving the Problems]

 Thus, the gist of the present invention is that a plurality of vertical joining plates are provided in parallel on the end faces of the pair of blocking rods on the joint side, and the joining plates of both connecting rods are alternately fitted. The pin is inserted in a skewered shape from the side after overlapping in a trapped state, and on the upper surface of the end on the joint side of the pair of blocking bars, the horizontal runout regulation consisting of a plurality of parallel plates extending on the other blocking bar A plate is provided in a projecting manner, and both of these lateral deflection restricting plates sandwich one plate of the other side from each other, which is the structure of the bending joint of the blocking rod of the circuit breaker.

[0007]

[Action]

 Next, the operation of the present invention will be described. A plurality of joint plates are provided in parallel on the end faces of the joints of both blocking rods, and the pins are inserted in a skewered pattern by superposing them in a state where they are alternately fitted. Since the plates are in mesh with each other and the length of the pin orthogonal to the axis of the blocking rod also increases in accordance with the number of joining plates, the blocking rod does not easily swing sideways.

[0008] In addition, a lateral shake restricting plate is provided in a staggered state on the upper surface of the end portion on the joint side of both blocking bars, and the lateral shake restricting plates sandwich one plate of the other side from each other. Therefore, the lateral shake can be more reliably prevented, and the lateral shake can be regulated over the entire opening / closing process.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part in a closed state, FIG. 2 is a perspective view of the main part in an open state, and FIG. 3 is an enlarged plan view of a joint part.

In the figure, 1 and 2 are a pair of blocking bars for forming a blocking bar that is bent at the central portion. Reference numeral 3 denotes a connecting member fitted to the end of the one blocking rod 1 on the side of the joint, and has a plurality of vertical joint plates 4 and 4 protruding in parallel on the end face, and the other end on the upper face of the other end. The horizontal deflection restricting plate 5 formed of a plurality of parallel plates 5a and 5b extending on the shutoff bar 2 is projected.

Reference numeral 6 denotes a connecting member fitted to the end of the other blocking rod 2 on the side of the connecting portion. Like the connecting member 3, the connecting plates 7 and 7 in the vertical direction are parallel to the end face. A plurality of plates are projected, and a lateral vibration restricting plate 8 composed of a plurality of parallel plates 8a, 8b extending on the other blocking rod 1 is also projected on the upper surface of the end portion. Further, one end of a wire 9 for assisting the opening and closing of the blocking rod is connected to the tip of the lateral shake restricting plate 8.

Then, the joining plates 4 and 4 of the connecting member 3 and the joining plates 7 and 7 of the connecting member 6 are alternately fitted as shown in FIG. 3, and the pin 10 is skewered from the side surface. , And connect it pivotally.

Further, the lateral shake restricting plate 5 of the connecting member 3 and the lateral shake restricting plate 8 of the connecting member 6 are staggered, and the other lateral shake restricting member is provided between the plates 5a and 5b of the lateral shake restricting plate 5. The one plate 8a of the plate 8 is inserted, and the one plate 5b of the lateral shake restricting plate 5 is inserted between the plates 8a and 8b of the lateral shake restricting plate 8.

Further, in the present embodiment, the connecting members 3 and 6 in which the joining plate and the lateral vibration restricting plate are integrated are used, and both the connecting members 3 and 6 have the same shape. However, in this case, the die cost can be saved and the production can be performed at low cost. Moreover, when the connecting member is made of resin, the material cost is further reduced, and the resulting connecting member is also lightweight.

[0015]

[Effect of device]

 Since the present invention has the structure and operation as described above, it is possible to reliably prevent lateral runout over the entire opening / closing process of the blocking rod. In addition, if a connecting member that integrates the joint plate and the lateral shake limiting plate is used, and both connecting members have the same shape, the die cost can be saved and the manufacturing can be performed at low cost. You can In addition, when the connecting member is made of resin, the material cost is further reduced and the resulting connecting member is also lightweight.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of the present invention in a shut-off state.

FIG. 2 is a perspective view of a main part of the present invention in an opened state.

FIG. 3 is an enlarged plan view of a joint portion of the present invention.

[Explanation of symbols]

 1, 2 A pair of blocking rods 3 Connecting members 4, 4 Joining plates 5 Lateral shake limiting plates 6 Connecting members 7, 7 Joining plates 8 Lateral shake limiting plates

Claims (3)

[Scope of utility model registration request] 1. A plurality of vertical joining plates are provided in parallel on the end surfaces of the pair of blocking rods on the joint side, and the joining plates of both connecting rods are alternately fitted to each other to form a side surface. While inserting the pin in a skewered shape from the above, a horizontal shake restricting plate consisting of a plurality of parallel plates extending above the other blocking bar is projected on the upper surface of the end part on the joint side of the pair of blocking bars. The structure of the bending joint of the blocking rod in the circuit breaker is characterized in that the lateral deflection restricting plates of the other one sandwich the other plate of the other side. 2. A bending of a breaking bar in a breaking machine, which uses a joining member in which a joining plate and a lateral shake restricting plate are integrated, and the joining member is fitted to end portions of a pair of breaking rods on a joining portion side, respectively. Structure of the joint. 3. The structure of the bent joint portion of the blocking rod in the circuit breaker according to claim 2, wherein the connecting member is formed of resin.