JPH062910U - Draw-out circuit breaker - Google Patents

Abstract

(57) [Summary] [Purpose] Reliable pull-out type disconnection that stabilizes the connection with the control circuit housing unit of the circuit breaker by eliminating any deviation of the test jumper receptacle housing in the direction opposite to the insertion direction. Provide a vessel. [Structure] Used to electrically connect the circuit breaker to the draw-out frame when the draw-out frame is attached to the switchboard and the sequence of the entire board is checked. A test jumper having a plug housing and a receptacle housing 12 connected to the control circuit housing unit 7 of the circuit breaker on the other end side is provided, and the rotatable lock piece 17 is provided in the receptacle housing 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a draw-out circuit breaker including a draw-out frame and a circuit breaker that can be inserted into and drawn out from the draw-out frame.

[0002]

[Prior art]

 A conventional drawer type circuit breaker will be described with reference to FIGS. 4 is a side view showing the connected state, FIG. 5 is a view of FIG. 4 from the left, FIG. 6 is a side view showing the drawn state, and FIG. 7 is an enlarged plan view showing the terminal base unit of the drawer frame of FIG. 8 is an enlarged plan view showing the housing unit of the circuit breaker of FIG. 6, FIG. 9 is a side view showing the state of sequence check, and FIG. 10 is a partial plan view taken along the line XX of FIG.

In the drawing, 1 is a draw-out frame, 2 is a connection position, disconnection position, draw-out position with respect to the draw-out frame 1 and a circuit breaker mounted so as to be insertable and withdrawable, 3 is a circuit breaker side projecting from the circuit breaker 2. Main circuit terminal 4, 4 is a drawing frame side main circuit terminal to which the circuit breaker side main circuit terminal 3 is connected at the circuit breaker 2 connection position, and 5 is a control circuit terminal base unit provided in the drawing frame 1 and arranged in parallel. It is provided with a large number of contacts 6 that are formed. Reference numeral 7 denotes a control circuit housing unit provided in the circuit breaker 2, which includes a large number of terminal plates 8 arranged in parallel. 9 is a switchboard, 10 is a test jumper used when the drawer frame 1 is attached to the switchboard 9 to check the sequence of the entire board, and a plug housing 11 connected to the control circuit terminal base unit 5 is provided at one end side. It also has a receptacle housing 12 connected to the control circuit housing unit 7 on the other end side. Although not shown, the receptacle housing 12 is provided with a large number of parallel contacts, like the terminal base unit 5 for the control circuit.

Next, the operation will be described. The construction and operation of this type of draw-out type circuit breaker are known, for example, from Japanese Utility Model Laid-Open No. 47-29346, so a detailed description thereof will be omitted. When the circuit breaker 2 is separated from the draw-out frame 1 and the sequence of the entire board is checked, the draw-out frame 1 is mounted on the switchboard 9 as shown in FIG. 9, and the plug housing 11 of the test jumper 10 is connected to the control circuit terminal of the draw-out frame 1. In addition to being connected to the base unit 5, the receptacle housing 12 is inserted into the control circuit housing unit 7 of the circuit breaker 2 in the direction indicated by the arrow 13 to be connected, and the circuit breaker 2 is electrically connected to the draw-out frame 1.

[0005]

[Problems to be solved by the device]

 In the conventional drawer type circuit breaker as described above, the receptacle housing 12 connected to the control circuit housing unit 7 of the circuit breaker 2 is in the opposite insertion direction (shown by the arrow 14) due to the impact of the circuit breaker opening / closing during the sequence check. However, there is a problem that the contact housing 12 is displaced in the direction) and the receptacle housing 12 is pulled out in the directions indicated by the arrows 14 and 15.

The present invention has been made in order to solve such a problem, and eliminates the displacement of the receptacle housing of the test jumper in the direction opposite to the insertion direction, thereby stabilizing the connection with the housing unit for the control circuit of the circuit breaker. The objective is to obtain a highly reliable draw-out circuit breaker that can be realized.

[0007]

[Means for Solving the Problems]

 The drawer type circuit breaker according to the present invention is used for electrically connecting the circuit breaker to the draw-out frame when the draw-out frame is attached to the switchboard and the sequence check of the entire board is performed, and the draw-out circuit breaker is provided on one end side. Equipped with a test jumper that has a plug housing connected to the control circuit terminal base unit and a receptacle housing connected to the control circuit housing unit of the circuit breaker on the other end side, and equipped with a rotatable lock piece in the receptacle housing. It is provided.

[0008]

[Action]

 In this invention, after inserting the receptacle housing of the test jumper into the control circuit housing unit of the circuit breaker and connecting it, and then inserting the lock piece into the groove of the control circuit housing unit, there is a gap in the direction opposite to the insertion direction of the receptacle housing. Can be prevented.

[0009]

【Example】

 An embodiment of this invention will be described with reference to FIGS. 1 is a plan view of the same main part as in FIG. 10, FIG. 2 is a perspective view of the main part showing the non-operating position of the lock piece when the receptacle housing is inserted, and FIG. 3 is the same view as FIG. 2 showing the operating position of the lock piece. Therefore, the same or corresponding parts as those of the above-mentioned conventional one are designated by the same reference numerals, and the description thereof will be omitted. In the figure, 16 is a groove formed on the side surface of the control circuit housing unit 7 of the circuit breaker 2, and 17 is a lock piece rotatably attached to the side of the receptacle housing 12 of the test jumper 10 by a pin 18. Is.

When the lock piece 17 is provided in this way, the lock piece 17 is inserted into the groove 16 in a state in which the receptacle housing 12 of the test jumper 10 is inserted into and connected to the control circuit housing unit 7. Because of the positional relationship shown in Fig. 3, if the lock piece 17 is not operated, the receptacle housing 12 can be removed in the direction shown by the arrow 19, but if the lock piece 17 is rotated to operate, the lock piece 17 can be removed as shown in Fig. 3. Since the tip 17a engages with the terminal end 16a of the groove 16, the receptacle housing 12 cannot be removed in the direction of the arrow 19, and of course, as shown by the arrow 14, there is no deviation and no contact failure occurs. It does not fall out in the direction indicated by.

[0011]

[Effect of device]

 As described above, according to the present invention, there is no deviation of the receptacle housing of the test jumper in the anti-insertion direction, so that the connection with the housing unit for the control circuit of the circuit breaker is highly reliable. There is an effect that is obtained.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part showing a non-operating position of the lock piece of FIG.

FIG. 3 is the same view as FIG. 2 showing the operating position of the lock piece.

FIG. 4 is a side view showing a connected state of a conventional one.

FIG. 5 is a view of FIG. 4 as viewed from the left.

FIG. 6 is a side view showing a pulled-out state.

FIG. 7 is an enlarged plan view showing the terminal base unit of FIG.

8 is an enlarged plan view showing the housing unit of FIG.

FIG. 9 is a side view showing a state of sequence check.

FIG. 10 is a partial plan view taken along the line XX of FIG.

[Explanation of symbols]

 1 Drawout Frame 2 Circuit Breaker 5 Control Circuit Terminal Base Unit 7 Control Circuit Housing Unit 9 Switchboard 10 Test Jumper 11 Plug Housing 12 Receptacle Housing 13 Insertion Direction 14 Anti-insertion Direction 16 Groove 17 Lock Piece

Claims (1)

[Scope of utility model registration request] 1. A drawer frame having a control circuit terminal base unit, and a circuit breaker having a control circuit housing unit that can be inserted into and drawn out from the drawer frame, and the drawer frame is attached to a switchboard. It has a plug housing that is used to electrically connect the circuit breaker to the draw-out frame when performing an overall sequence check and that is connected to the terminal base unit for the control circuit at one end side and the control at the other end side. A drawer-type circuit breaker including a test jumper having a receptacle housing connected to a circuit housing unit, wherein a rotatable lock piece is provided in the receptacle housing, and the receptacle housing is inserted into the control circuit housing unit to be connected. The lock piece in the locked state Drawout circuit breaker is inserted into the groove of Guyunitto characterized by preventing displacement of the counter-insertion direction of the receptacle housing.