JP2015090837A - Terminal cover fixing structure of circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal cover fixing structure of a circuit breaker capable of achieving a structure capable of fixing a terminal cover on a terminal part of the circuit breaker with a wire in simple processing.SOLUTION: The terminal cover fixing structure of a circuit breaker is so formed that a through-hole part 16 for inserting a linear member for fixing a terminal cover that covers a terminal of the circuit breaker by bringing a projection part 15 formed on one housing side face in contact with the other housing side face, when stacking in a housing width direction and disposing a plurality of housings constituting circuit breakers 4, 5.

Description

  The present invention relates to a terminal cover fixing structure for a switch.

  As a means for avoiding accidents in which an operator touches the terminal part while the switch is energized, a technique is widely adopted in which a terminal cover that covers the terminal part is detachably provided above the terminal part of the switch. .

  And the sealing structure which seals the terminal cover attached to the terminal part of the switch is provided, and the structure which seals through a wire when sealing is required is used. As a sealing structure, a technique is used in which an opening is provided on a side surface of a switch and a wire is passed to seal a terminal cover. In addition, as a technique for sealing the terminal cover, for example, as in Patent Document 1, a handle portion having a hole through which a ring or a wire can be inserted is formed above the terminal portion, and inserted into the handle portion. In addition to sealing the terminal cover by inserting and fixing a ring or wire through a hole formed in the terminal cover, a technique for avoiding dropping or loss is disclosed.

  However, the structure in which the opening is provided on the side surface of the housing has a problem that the opening is blocked by the shape of the adjacent device, and the wire cannot pass and cannot be fixed. Moreover, in the technique of patent document 1, since a handle part protrudes in the electric wire insertion direction, there exists a problem which becomes obstructive at the time of the electric wire connection to a terminal part.

JP 2011-134599 A

  An object of the present invention is to provide a terminal cover fixing structure for a switch that can fix a wire regardless of the shape of a casing of an adjacent switch and can be realized by simple processing.

  The terminal cover fixing structure of the switch of the present invention made to solve the above problems is formed on the side surface of one casing when arranging a plurality of casings constituting the switch in the casing width direction. By causing the protrusion to contact the side surface of the other casing, a through hole for inserting a linear member that fixes a terminal cover that covers the terminal of the switch is formed.

  According to a second aspect of the present invention, in the terminal cover fixing structure for a switch according to the first aspect, the protrusion is substantially the same as the depth of the recess in a recess formed by partially recessing the side surface of the one casing. A protruding portion formed with a protruding height, wherein a through-hole portion surrounded by the side surface of the other housing and the recessed portion is formed around the protruding portion.

  The invention according to claim 3 is the terminal cover fixing structure of the switch according to claim 2, wherein the recess is formed by inclining portions formed by inclining portions facing the inlet and the outlet of the through hole portion. It is characterized by comprising.

  According to a fourth aspect of the present invention, in the terminal cover fixing structure for a switch according to the second aspect, one of the inlet and the outlet is opened in a direction opposite to the mounting surface of the switch, and the other is It is characterized in that it is opened toward the lead-out direction of the lead wire drawn out from the terminal portion.

  According to a fifth aspect of the present invention, in the terminal cover fixing structure for a switch according to the second aspect, an end of the inclined portion is extended from the inlet or the outlet.

  According to a sixth aspect of the present invention, in the switch according to the second aspect, at least one terminal portion of the plurality of terminal portions is formed as a first terminal portion at any position before and after the handle, One terminal part of the first terminal part is located between the first terminal part and a vertical axis orthogonal to the rotation axis of the handle, and at a position different in the vertical direction of the first terminal part, and The through-hole portion is formed at a position shifted from the first terminal portion in the width direction of the casing constituting the switch, and on the side of the thick portion that occurs on either side of the width direction of the casing of each terminal portion. It is characterized in that a depression and a protrusion to be formed are formed.

  In the terminal cover fixing structure for a switch according to the present invention, when a plurality of casings constituting the switch are arranged in a stacking direction in the casing width direction, the protrusions formed on the side surface of one casing are replaced with the other casing. By forming a through hole for inserting a linear member that fixes the terminal cover that covers the terminal of the switch by making contact with the side surface, the terminal cover is fixed to the switch to prevent the terminal cover from falling off. It is possible. For this reason, it is possible to fix the terminal cover by winding the wire around the protruding portion regardless of the shape of the adjacent housing. Moreover, it is a structure which does not form a handle part, and the through-hole part which a linear member can pass is formed only by adjoining the housing | casing which comprises a switch in a housing | casing width direction.

  According to a second aspect of the present invention, the protruding portion is a protruding portion formed in a recessed portion in which the side surface of the one casing is partially recessed with a protrusion height substantially the same as the recessed depth, By forming a through-hole part surrounded by the other casing side surface and the indented part around the protrusion, it is possible to provide a through-hole part without providing a gap between the other casing side surfaces. Thus, a compact device configuration and arrangement can be realized.

  According to a third aspect of the present invention, the hollow portion includes an inclined portion formed by inclining portions facing the inlet and the outlet of the through-hole portion, whereby the linear member is inserted into the through-hole. It is possible to pass smoothly from the entrance to the exit of the part, and to improve the workability of the terminal cover mounting operation.

  According to a fourth aspect of the present invention, one of the inlet and the outlet is opened in the direction opposite to the mounting surface of the switch, and the other is directed in the direction in which the lead line led out from the terminal portion is drawn out. By arranging a plurality of casings constituting the switch in the casing width direction by arranging them so as to be opened, the through-hole portion of the linear member is not obstructed by the presence of adjacent casings. Can be passed through.

  As in the invention of claim 5, by adopting a configuration in which the end portion of the inclined portion is extended from the inlet or the outlet, the terminal cover is placed in a fixed position of the housing, The operation of passing the linear member through the hole can be performed smoothly.

  In the case where the hollow portion is formed on the side surface of the housing, the wall surface of the housing is thinned, which may cause a decrease in strength. However, as in the invention according to claim 6, at least one of the plurality of terminal portions provided. After forming one terminal part as a first terminal part at any position before and after the handle, the other terminal part is used as a second terminal part and is orthogonal to the first terminal part and the rotation axis of the handle Each of which is located between the vertical axis and the vertical position of the first terminal portion, and is shifted from the first terminal portion in the width direction of the casing constituting the switch, Decrease in housing strength due to the formation of the depressions by forming the depressions and protrusions that form the through-holes on the thick part side that occurs on either the left or right side in the casing width direction of the terminal part. Can be avoided.

They are the whole switch perspective view (a) and front view (b) of the switching switch concerning the following embodiment. It is a decomposition | disassembly enlarged view of the principal part of the switching switch which concerns on the following embodiment. It is a side view explaining other embodiment.

  Preferred embodiments of the present invention are shown below.

  As shown in FIG. 1, the switching switches 4 and 5 of this embodiment form output terminal portions 2 serving as first terminal portions at two front and rear positions below the handle 1 so as to sandwich the handle 1. The one-pole type switching switches 4 and 5 having the input terminal part 3 serving as the second terminal part are stacked above one output terminal part 2 to form a two-pole structure. In the present embodiment, the direction of the handle 1 of the housing is referred to as the upper direction, the input terminal portion 3 side as viewed from the handle 1 is referred to as the front, the opposite side is referred to as the rear, and the width direction of the housing is referred to as the left-right direction.

  An output terminal cover 6 that covers the output terminal portion 2 and an input terminal cover 7 that covers the input terminal portion 3 are detachably attached to the two-pole switching switch of FIG.

  The output terminal cover 6 and the input terminal cover 7 (hereinafter, collectively referred to as “terminal cover”) are a single cover, which extends from the switching switch 4 to the switching switch 5 in the casing width direction. Are formed to cover together. In this embodiment, the terminal cover is formed in a substantially U shape, and includes a first cover portion 8 that covers the terminal portion of the switching switch 4, a second cover portion 9 that covers the terminal portion of the switching switch 5, A connecting portion 10 for connecting the one cover portion 8 and the second cover portion 9 is provided.

  As shown in FIG. 2, a terminal cover mounting portion 11 on which the first cover portion 8 and the second cover portion 9 are mounted is formed in the casing constituting the switching switches 4 and 5. The terminal cover mounting portion 11 is formed with a locking piece 12 that is used by fitting with the terminal cover.

  As shown in FIG. 1, the first cover portion 8 and the second cover portion 9 are formed with notches 13 into which the locking pieces 12 are fitted. When removing the terminal cover from the state in which the notch 13 is fitted in the locking piece 12, it is necessary to lift the terminal cover upward. This structure prevents the terminal cover from falling off due to vibration or the like.

  The connecting portion 10 is formed with a hole portion 14 through which a wire 17 that prevents the terminal cover from dropping off from the two-pole switching switch is passed.

  As shown in FIG. 1, the terminal cover is attached to the side surface of one housing (switching switch 4), more specifically, by forming a protruding portion 15 formed on one of the left and right thick portions 21 described later of the output terminal portion 2. The through-hole portion 16 is formed by contacting the side surface of the other housing (switching switch 5). After the wire 17 that is a linear member inserted into the through hole 16 is inserted into the hole 14 of the terminal cover, both ends of the wire 17 are joined and the wire 17 is wound around the protrusion 15. It is fixed in such a way as to prevent it from coming off. In addition, as a structure for joining and sealing, it is performed in a ring shape by fixing a sealing member. According to this structure, the through-hole portion 16 is formed simply by forming a plurality of switching switches 4 and 5 in a stacking manner in the housing width direction. Further, when the through hole 16 is formed, the other housing with which the protrusion 15 abuts is not limited to the same type of device, and the shape of the terminal cover is, for example, the first cover 8 and the through hole. A terminal cover consisting only of the portion 16 may be used.

  In this embodiment, as shown in FIGS. 1 and 2, a part of the side surface of the casing constituting the switching switches 4, 5 is recessed to form a recessed part 18, and the recessed part 18 has a recessed depth. The protrusion 15 is formed with a protrusion height substantially the same as that. In this manner, the protrusion 15 is formed, and the air gap is provided between the casings by forming the through-hole portion 16 surrounded by the other casing side surface and the recess 18 around the protrusion 15. Since it is possible to provide the through-hole portion 16 without any problem, a compact device configuration and arrangement can be realized. However, when the size in the width direction of the casing is not a problem, the protrusion height of the protrusion 15> the recess depth of the recess 18 may be set.

  Further, in the present embodiment, as shown in FIG. 2, an inclined portion formed by inclining a portion facing the opening 16 a serving as an inlet and an outlet of the through hole portion 16 from the upper side to the rear side, as shown in FIG. 2. 20 is provided. According to this structure, the wire 17 is guided by the inclined portion 20 simply by pushing the wire 17 from above or behind, and can be smoothly inserted from the inlet of the through hole portion 16 toward the opening 16a serving as the outlet. The workability of the terminal cover mounting operation can be improved. Even in a state where the terminal cover is placed on the terminal cover mounting portion 11, in order to smoothly insert the wire 17, the inclined portion 20 has an opening serving as an inlet or an outlet of the through hole portion 16. It is preferable to provide an extending portion 20a extending from 16a.

  In the present embodiment, one of the inlet and outlet of the through-hole portion 16 opens upward in the direction opposite to the mounting surface of the switching switches 4 and 5, and the other is the output terminal portion 2 or It is set as the structure opened toward the front-back direction used as the outgoing line or incoming line direction of the electric wire connected to the input terminal part 3. FIG. According to the structure, the lead-out direction of the wire 17 is parallel to the wiring direction of the electric wire connected to each terminal portion, and a plurality of cases constituting the switching switches 4 and 5 are arranged in the case width direction. At this time, the operation of passing the wire 17 through the through-hole portion 16 can be performed without being obstructed by the presence of the adjacent housing. In addition, by forming the opening 16a toward each different surface, when one of the openings 16a is difficult to insert with an electric wire or the like, it can be inserted from the other opening 16a. As another embodiment, as shown in FIG. 3A, both the opening 16a serving as the inlet and the outlet of the through hole 16 are opened in the direction opposite to the mounting surface of the switching switches 4 and 5. As shown in FIG. 3 (b), both the opening 16 a serving as the inlet and the outlet of the through-hole portion 16 are connected to the output terminal portion 2 and the input terminal portion 3. It is also possible to have a structure that opens toward the surface.

  In addition, when forming the said recessed part 18 in the side surface of a housing | casing, although the wall surface of a housing | casing becomes thin and there exists a possibility of causing a strength fall, in this embodiment, the input terminal part 3 is made into an output terminal part. 2, the thick portion 21 is formed on either the left or right side in the width direction of the casing of each terminal portion, and the hollow portion 18 is formed on the thick portion 21 side. By adopting such a configuration, a decrease in housing strength due to the formation of the recessed portion 18 is avoided. Further, in the present embodiment, in order to make the housing width compact, the input terminal portion 3 and the output terminal portion 2 are respectively arranged so as to partially overlap the housing width direction second contour line. In order to secure an insulation distance between them, a partition wall portion 22 is formed between the input terminal portion 3 and the output terminal portion 2 for the purpose of securing a creepage distance.

  In the above description, the structure in which the protruding portion 15 and the recessed portion 18 are formed on the thick portion 21 formed on either the left or right side of the output terminal portion 2 has been described. However, in the present embodiment, as shown in FIG. In addition, a thick portion 21 is formed on either the left or right of the output terminal portion 2 and the input terminal portion 3 of each of the switching switch 4 and the switching switch 5, and each thick portion 21 has a depression. A portion 18 and a projection 15 are formed, and through holes 16 are formed at two places above and below the overlapping surface of the switching switch 4 and the switching switch 5. The upper through hole portion 16 is formed on the side of the recessed portion 18 formed in the casing of the switching switch 5, and the lower through hole portion 16 is formed on the side of the recessed portion 18 formed in the casing of the switching switch 4. As a result, a slight shift occurs at the positions of the upper and lower through-hole portions 16, and this shift can avoid interference between the wires 17 inserted through the upper and lower through-hole portions 16.

  In the present embodiment, the first terminal portions at the two front and rear locations are used as the output terminal portions 2, and the second terminal portions formed at different positions in the vertical direction of the first terminal portions are formed as the input terminal portions 3, Although it has been described that the output direction is changed, as another embodiment, the first terminal portions at the front and rear two places are formed as input terminal portions, and the second terminal portions are formed as output terminal portions. The input direction may be changed and used.

  Moreover, in the said embodiment, although the switching switches 4 and 5 which switch the output terminal part 2 to either side by operating the handle | steering_wheel 1 were demonstrated, the switch of this invention is limited to a switching switch. However, it is applicable to general switches such as a circuit breaker.

DESCRIPTION OF SYMBOLS 1 Handle 2 Output terminal part 3 Input terminal part 4, 5 Switching switch 6 Output terminal cover 7 Input terminal cover 8 First cover part 9 Second cover part 10 Connection part 11 Terminal cover mounting part 12 Locking piece 13 Notch part 14 Hole 15 Protrusion 16 Through-hole 16a Opening 17 Wire 18 Recess

20 Inclined part 20a Extension part 21 Thick part 22 Partition part

Claims (6)

When a plurality of casings constituting the switch are arranged in the casing width direction, a protrusion formed on one casing side is brought into contact with the other casing side,
A terminal cover fixing structure for a switch, wherein a through hole for inserting a linear member for fixing a terminal cover for covering the terminal of the switch is formed. The protrusion is a protrusion formed in a recess portion in which the side surface of the one housing is partially recessed with a protrusion height substantially the same as the recess depth,
The terminal cover fixing structure for a switch according to claim 1, wherein a through-hole portion surrounded by the side surface of the other casing and the recess is formed around the protrusion.   The terminal cover fixing structure for a switch according to claim 2, wherein the hollow portion includes an inclined portion formed by inclining portions facing the inlet and the outlet of the through hole portion. Of the entrance and exit,
Open one side in the direction opposite to the mounting surface of the switch,
The terminal cover fixing structure for a switch according to claim 3, wherein the other is opened toward a lead-out direction of a lead-out line led out from the terminal portion.   The terminal cover fixing structure for a switch according to claim 3, wherein an end of the inclined portion is extended from the inlet or the outlet. After forming at least one terminal part of a plurality of terminal parts as a first terminal part at any position before and after the handle, the other one terminal part as a second terminal part,
A switch is configured between the first terminal portion and a vertical axis perpendicular to the rotation axis of the handle and at a position different in the vertical direction of the first terminal portion and from the first terminal portion. Formed at a position shifted in the housing width direction,
The terminal of a switch according to claim 2, wherein a depression and a projection that form the through hole are formed on a thick portion side that is generated on either side of the width direction of the casing of each terminal portion. Cover fixing structure.