JP2017028070A - Mechanism for fitting electrical equipment to rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical equipment fitting mechanism capable of suppressing cost by simplifying a structure for fitting and, on the other hand, capable of obtaining a fitting state corresponding to a use situation by adjusting easiness or unlikeliness for an equipment housing to be removed from a rail.SOLUTION: On a housing back part 11 of electrical equipment, a movable piece 20 and a stationary piece 12 are disposed which can be engaged and disengaged to and from edge parts 81 and 82 of a rail 80. The movable piece 20 is energized to a side close to the stationary piece 12 by a spring 40. On the other hand, a range in which the movable piece 20 is movable is appropriately set by an arrangement of a movable piece restriction part. When a housing 10 is moved and the movable piece 20 is relatively moved against an energizing force of the spring 40 in the case of fitting/removal to/from the rail 80, the stationary piece 12 that is moved relatively to the ail 80 naturally achieves an engagement/disengagement enabled position. Therefore, the equipment housing can be easily fitted to or removed from the rail without using any other instrument, workability is improved and cost can be suppressed by simplifying the structure.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an attachment mechanism for attaching an electrical / electronic device such as a control device or a network-compatible device to a device mounting rail provided on a control panel, a distribution board or the like.

  When installing electrical devices such as control devices such as programmable logic controllers and network-compatible devices such as switching hubs in control panels and switchboards, the installation workability is improved and operations can be performed quickly. For this reason, it has been common in the past to provide a device mounting rail in a housing such as a control panel in advance so that the electric device can be detachably mounted on the mounting rail.

  As an example of a conventional attachment mechanism on the electric equipment side that enables attachment to an equipment attachment rail provided in such a control panel or the like, it is disclosed in Japanese Patent Application Laid-Open No. 2010-61319 and Japanese Patent No. 4844911. There is something.

JP 2010-61319 A Japanese Patent No. 4844911

  Conventional electrical equipment mounting mechanisms to electrical equipment mounting rails are configured as shown in the above-mentioned patent documents, and by installing equipment on the rails, electrical equipment can be installed on control panels and the like. It can be done easily and quickly.

  However, the conventional attachment mechanism as shown in the above-mentioned patent document has a complicated structure for enabling the device to be attached to and detached from the rail with a simple operation, leading to an increase in cost and when removing the device from the rail. It had the subject that the apparatus for removal was needed. In addition, since the mounting state of the device on the rail depends only on the elastic biasing force generated by the spring or the like, the device may come off the rail when a strong external force is applied to the device mounted on the rail. It had the problem that.

  The present invention has been made to solve the above-described problems, and can simplify the structure for mounting and reduce the cost. On the other hand, it is easy to remove the equipment housing from the rail by setting the movable range of the movable piece. It is an object of the present invention to provide an electrical device mounting mechanism that can adjust the difficulty of detachment and can obtain a mounting state according to the use situation.

  An electrical equipment mounting mechanism according to the present invention is an electrical equipment mounting mechanism that enables an electrical equipment housing to be attached to a top-hat rail for electrical equipment mounting, along a back surface portion facing the rail of the housing. A movable piece that is slidably disposed and has one end projecting from the rear surface of the housing and being detachable from one edge of the rail, and projecting from the housing on the rear surface of the housing A fixed piece that can be hooked to and disengaged from the other edge of the rail, and an arrangement that protrudes in a direction parallel to the sliding direction approaching the fixed piece of the movable piece on a predetermined outer surface of the housing. A movable piece restraining portion having a shape in which the front end portion in the protruding direction is made larger than the side close to the housing, and a spring for biasing the movable piece in a direction approaching the fixed piece, and the other end portion of the movable piece The predetermined length range is folded at right angles to the rest of the movable piece, The movable piece restraining portion is oriented in parallel with the outer surface of the housing having the movable piece restraining portion, the movable piece restraining portion is integrated with the housing through the other end of the movable piece that is bent, and the spring is movable. Between the tip of the piece restraining part and the other end of the movable piece, it is arranged in a state where it is compressed to generate an urging force. The distance between the movable piece and the fixed piece is made smaller than the rail width in the state where the force is not applied, and the tip of the movable piece restraining part is movable when the other end of the movable piece comes close to the tip. The arrangement is such that the fixed piece on the rear surface of the housing moves relative to the other edge of the rail and moves relative to the other edge of the rail while one end of the piece is hung on one edge of the rail. .

  As described above, in the present invention, the movable piece and the fixed piece that are detachable from the edge of the rail are provided on the rear surface of the housing of the electric device, and the movable piece is attached to the side that approaches the fixed piece with a spring. On the other hand, the movable range of the movable piece is appropriately set by the arrangement of the movable piece restraining part, and the housing is moved when mounting and dismounting from the rail, and the movable piece is opposed to the biasing force of the spring. When moved, the fixed piece moved relative to the rail reaches the position where it can be easily hooked and removed, so that the equipment housing can be easily attached to or removed from the rail without using other equipment. In addition, the cost can be reduced as a simple structure.

  Further, in the electrical equipment mounting mechanism according to the present invention, the movable piece restraining portion is a screw that is screwed into the housing with the screw axis direction being the same direction as the protruding direction, and the screw portion bends the movable piece as necessary. The other end portion of the movable piece penetrates the other end portion, and the spring is interposed between the screw head as the tip portion and the other end portion of the movable piece.

  Thus, in the present invention, the movable piece restraining portion is a screw that is screwed into the housing, and the screw head that forms the tip of the movable piece restraining portion is changed by changing the screwing state of the screw with the housing. By adjusting the position and easily changing the setting state of the movable range of the movable piece, it is possible to adjust the positional relationship between the movable piece and the fixed piece according to the situation, and the work efficiency of mounting and removing the equipment on the rail The improvement can be achieved, and the movable piece restraining portion can be simplified to reduce the cost.

  In addition, the electric device mounting mechanism according to the present invention enables the movable piece restraining portion to adjust the screwing state by rotating the screw in the tightening direction with respect to the housing as necessary. When the other end of the movable piece comes as close as possible to the screw head as the tip, with one end of the rail hanging on one edge of the rail and the fixed piece hanging on the other edge of the rail However, the fixed piece cannot be moved relative to the other edge of the rail.

  Thus, in the present invention, the screw forming the movable piece restraining portion is screwed so as to be shifted to the tightening side with respect to the housing, the movable piece is brought closer to the fixed piece, and the movable range is narrowed. When the movable piece is moved away from the fixed piece against the urging force of the spring while the fixed piece is mounted on the rail with the fixed piece hanging on the rail edge, the fixed piece is released from the rail. In this way, the device can be securely fixed in the state where it is attached to the rail, and even if an unintended external force is applied, the device is kept attached to the rail to prevent it from falling out and improve safety. It can be secured.

  Further, in the electrical equipment mounting mechanism according to the present invention, if necessary, the movable piece restraining portion has a shaft portion that is thinner than the screw portion and the head portion between the screw portion and the head portion. A penetrating part that penetrates a part of the movable piece restraining part at the end passes through the shaft part so as to be able to rotate and move in the axial direction, but has a narrower hole shape than the threaded part and does not allow passage of the threaded part. It is.

  As described above, in the present invention, a thin shaft portion is provided between the screw portion of the movable piece restraining portion that is a screw and the head portion that is the tip portion, and a portion through which the movable piece restraining portion penetrates at the other end portion of the movable piece. The movable piece restraining portion is formed even if the movable piece restraining portion is not screwed with the casing by forming a hole shape that allows only the shaft portion to pass and restraining the movable piece restraining portion to the other end portion of the movable piece. Does not fall off from the other end of the movable piece, and the arrangement state in which the spring is positioned between the distal end portion of the movable piece restricting portion and the other end of the movable piece is maintained, and the movable piece restricting portion and the spring are movable. Can be handled integrally with the piece and the case, there is no risk of loss, and the movable piece restraining part can be quickly returned to the state of being screwed with the case even after the screwing is released, and the movable piece is restrained appropriately. However, it is possible to easily shift to the energized state.

  Further, in the electrical equipment mounting mechanism according to the present invention, if necessary, the housing is formed in a box shape by bending a metal plate-like body, and a plurality of plate portions are overlapped at a part of the back surface portion, A substantially plate-shaped movable piece is slidably accommodated between the overlapping plate portions.

  As described above, in the present invention, the electric device casing is formed by bending a metal plate-like body, the movable piece is disposed in a portion where the plate portions overlap on the back surface portion, and the movable piece is sandwiched between the plate portions and restrained. However, by allowing the movable piece to move linearly closer to or away from the fixed piece while allowing it to slide, it is possible to easily obtain a state in which movement in the other direction is appropriately restricted, While the device is mounted on the rail, unnecessary movement of the movable piece can be suppressed, the device can be stably fixed, and the cost of the entire mechanism can be suppressed.

It is a rail attachment state front view of the equipment to which the electric equipment attachment mechanism concerning one embodiment of the present invention is applied. It is a rail attachment state right view of the apparatus to which the electric equipment attachment mechanism which concerns on one Embodiment of this invention is applied. It is a rear view of the apparatus to which the electric equipment mounting mechanism concerning one embodiment of the present invention is applied. It is the top view and bottom view of an apparatus which applied the electric equipment mounting mechanism concerning one embodiment of the present invention. It is an arrangement explanatory drawing of the screw in the equipment to which the electric equipment mounting mechanism concerning one embodiment of the present invention is applied. It is an engagement start state explanatory drawing to the rail edge part of the movable piece one end part at the time of attachment of the equipment to which the electric equipment attachment mechanism concerning one embodiment of the present invention is applied. It is each state explanatory drawing of the relative movement with respect to the rail edge of a movable piece one end part at the time of attachment of the apparatus to which the electric equipment attachment mechanism which concerns on one Embodiment of this invention is applied, and a fixed piece. It is an arrival state explanatory view of the fixed piece to the rail edge part lower side at the time of attachment of the equipment to which the electric equipment attachment mechanism concerning one embodiment of the present invention is applied. It is a latch release state explanatory drawing with respect to the rail edge part of a fixed piece in the case of removal of the apparatus to which the electric equipment attachment mechanism which concerns on one Embodiment of this invention is applied. It is relative movement state explanatory drawing with respect to the rail edge part of the fixed piece in the case of removal of the apparatus to which the electric equipment attachment mechanism which concerns on one Embodiment of this invention is applied.

  Hereinafter, an attachment mechanism according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, an example of an attachment mechanism for attaching a switching hub as an electric device to a so-called DIN rail of a top hat type will be described.

  In each of the above drawings, the attachment mechanism 1 according to the present embodiment is slidably disposed along the back surface portion 11 of the housing 10 of the electric device, and can be hooked / removed on one edge 81 of the rail 80. A movable piece 20, a fixed piece 12 projecting from the back surface portion 11 of the housing 10 and detachable from the other edge portion 82 of the rail 80, and arranged in a protruding state at a predetermined position on the outer surface of the housing 10. It is a structure provided with the screw 30 as a movable piece restraining part provided, and the spring 40 which urges | biases the movable piece 20 in the direction which approaches the fixed piece 12. FIG.

  A casing 10 of an electric device to which the mounting mechanism 1 of the present embodiment is applied is formed in a rectangular box shape by bending a metal plate. A fixing piece 12 that is a part of a metal plate is bent and protruded is disposed on the back surface portion 11 of the housing 10 that faces the mounting rail 80 and is to be attached thereto. The In addition, a plurality of plate portions are arranged so as to overlap each other at a part of the rear surface portion 11 of the housing 10 away from the fixed piece 12, and the movable piece 20 is disposed between the overlapping plate portions.

  The movable piece 20 is formed of a metal plate-like body, is slidably disposed along the back surface portion of the housing 10 of the electric device, and protrudes from the housing back surface portion 11 by bending one end portion 21. The one end portion 21 can be hooked on and disengaged from one edge portion 81 of the rail 80. The predetermined length range of the other end portion of the movable piece 20 is bent at a right angle with respect to the remaining portion of the movable piece 20, so that the upper surface of the housing 10, that is, the back surface portion of the housing 10. The movable piece 20 is configured to be oriented in parallel with the outer surface of the casing perpendicular to the sliding direction approaching the fixed piece 12.

  The movable piece 20 is slidably housed between the overlapping plate portions at a position where a plurality of plate portions on the back surface portion 11 of the housing 10 overlap, and is straight with respect to the fixed piece 12 of the same back surface portion 11. It is the structure arrange | positioned in the state restrained so that it may not move to directions other than the direction which approaches or leaves | separates, specifically, the longitudinal direction of the housing | casing back surface part 11. FIG. In addition, the movable piece 20 has a movable range for sliding in a direction approaching or moving away from the fixed piece 12 by the projecting one end portion 21 and the bent other end portion 22 contacting the housing 10. It will be limited.

  The fixed piece 12 is arranged in a protruding state by bending a part of a plate-like body forming the casing 10 as an arrangement facing the one end 21 protruding the movable piece 20 on the back surface portion 11 of the casing 10. The rail 80 is configured to be detachable from the other edge 82.

  The screw 30 is screwed into a predetermined position near the rear surface portion on the outer surface on the upper side of the casing 10, that is, the outer surface of the casing perpendicular to the sliding direction approaching the fixed piece 12 of the movable piece 20, and the sliding It is the structure arrange | positioned as the arrangement | positioning which protrudes in the direction parallel to a direction. In this screw 30, the head 31 of the screw is located at the end opposite to the side to be screwed with the housing 10, so that the tip in the protruding direction is close to the housing 10 as a movable piece restraining portion. It is a mechanism that makes the shape larger than the side.

  The screw 30 as the movable piece restraining portion passes through the other end portion 22 of the movable piece 20 that is bent, and is screwed into the housing 10 to be integrated with the housing 10. The screw 30 can be rotated in the tightening direction or the reverse loosening direction with respect to the housing 10 to adjust the screwing state, and the protruding state of the head 31 as the tip portion from the housing 10 can be appropriately changed and adjusted. Is possible.

  The head portion 31 of the screw 30 is formed in a cylindrical shape, and is provided with a slit or a cross hole on the end face, and is also knurled on the outer peripheral portion of the cylinder so that the operator can turn the screw with fingers. It is. Further, the screw 30 is configured to have a shaft portion 33 formed narrower than the screw portion 32 between the head portion 31 and the screw portion 32.

  On the other hand, the penetrating portion 23 that penetrates the screw 30 in the other end portion 22 of the movable piece 20 passes through the shaft portion 33 of the screw 30 so as to be able to rotate and move in the axial direction, while being provided with a narrower hole than the screw portion 32. The thread portion 32 is not allowed to pass (see FIG. 5).

  In this way, the threaded portion of the other end of the movable piece 20 is passed through only the shaft portion 33, and the screw 30 is partially restrained so as not to be detached from the movable piece 20. Even if the screw 10 does not screw with the body 10, the screw 30 does not fall off the other end of the movable piece 20.

  In addition, the penetration part 23 which penetrates the screw 30 in the other end part of the movable piece 20 is initially a separate member independent of the movable piece 20, and the member forming the penetration part is provided with the screw 30. In this state, it is press-fitted into a hole previously drilled in the other end 22 of the movable piece 20 in a state where it has been passed through, and is fixed and integrated with the movable piece 20.

  In this way, after the screw 30 is passed through the through hole and the shaft portion 33 is positioned in the hole, the hole is made narrower than the screw portion 32 so that the screw portion 32 does not pass through, thereby preventing the screw 30 from falling off. By performing the processing for obtaining the above structure on a member different from the movable piece, it is easier to perform such processing directly on the movable piece, and the manufacturing work can be made more efficient.

  The spring 40 is a helical spring disposed so as to be interposed between a screw head 31 as a tip portion of the movable piece restraining portion and the other end portion of the movable piece 20. The shaft portion 33 and a part of the screw portion 32 are passed through.

  The spring 40 is disposed between the head 31 and the other end of the movable piece 20 in a state in which the spring 40 is compressed and compressed by a natural length, and is screwed into the housing 10. A configuration in which the biasing force of the spring is applied so as to widen the gap with the other end of the movable piece, thereby pushing the movable piece 20 toward the housing 10, that is, biasing the movable piece 20 toward the fixed piece 12. It is. The urging force of the spring slides the movable piece 20 so that the distance between the movable piece 20 and the fixed piece 12 is smaller than the rail width in a state where no other force is applied from the outside. In this state, the rail 80 can be held between the movable piece 20 and the fixed piece 12 in the state of being attached to the rail 80.

  About this spring 40, the state in which the spring 40 is disposed between the screw head 31 and the other end of the movable piece 20 is configured such that the screw 30 does not fall off from the other end of the movable piece 20. As with the screw 30, the spring 40 can be handled integrally with the housing 10, there is no risk of loss, and the screw 30 is screwed with the housing 10 from the unscrewed state. If it returns to a state, it can transfer to the state which biased the movable piece 20 moderately with the spring 40 without a problem.

  The head 31 of the screw 30, together with the spring 40, defines the moving range of the movable piece 20. Normally, when the other end portion of the movable piece 20 approaches the head portion 31 to the maximum extent by applying an external force accompanying an operator's operation or the like, the screw head portion 31 moves the end portion 21 of the movable piece 20 to the rail 80. A state in which the fixed piece 12 of the housing back surface portion 11 is moved toward and away from the other edge portion 82 of the rail 80, that is, in a state of being relatively moved in the front-rear direction with respect to the rail 80, while being hung on one edge portion 81 of the rail. It is an acceptable arrangement. As a result, the operator can operate only the housing 10 to attach or remove the housing 10 to or from the rail 80 without any problem.

  On the other hand, when the screw 30 is rotated in the tightening direction with respect to the housing 10 to adjust the screwing state, and the screw head 31 is brought close to the housing 10 to narrow the movable range of the movable piece 20, the movable piece From the rail mounting state of the housing 10 in which one end 21 of the rail 20 is hooked on one edge 81 of the rail 80 and the fixed piece 12 is hooked on the other edge 82 of the rail 80, Even when the end portion 22 is brought as close as possible, the fixing piece 12 cannot be moved in the direction of separating from the other edge portion 82 of the rail 80, and the housing 10 cannot be removed. Even in the reverse mounting, the fixed piece 12 cannot move over the other edge 82 of the rail 80 in a state where the one end 21 of the movable piece 20 is hooked on one edge 81 of the rail 80, It becomes impossible to install.

  Contrary to the above, when the screw 30 is rotated in the loosening direction with respect to the housing 10 to adjust the screwing state, the screw head 31 is moved away from the housing 10 and the movable range of the movable piece 20 is expanded, From the rail mounting state of the housing 10 in which the one end 21 of the movable piece 20 is hooked on one edge 81 of the rail 80 and the fixed piece 12 is hooked on the other edge 82 of the rail 80, the movable piece 20 is moved to the screw head 31. If the other end portion 22 of the rail approaches the predetermined amount less than the maximum, the fixing piece 12 can be moved away from the other edge portion 82 of the rail 80 so that the housing 10 can be removed. . In the reverse mounting, the predetermined amount that the other end 22 of the movable piece 20 does not reach the maximum on the screw head 31 with the one end 21 of the movable piece 20 hooked on one edge 81 of the rail 80. If it approaches, the fixed piece 12 can move over the other edge part 82 of the rail 80, and the housing | casing 10 can be attached to the rail 80. FIG.

  Next, the process of attaching and detaching electrical equipment to and from the mounting rail using the mounting mechanism according to this embodiment will be described. As a premise, the screw 30 is screwed into the housing 10 and the screw 30 is adjusted in advance by tightening or loosening the screw 30 with respect to the housing 10 in advance as necessary. When the other end of the movable piece 20 is as close as possible to the head 31, i.e., when the other end of the movable piece 20 is as close as possible to the head 31, the portion 31 is hung on one edge 81 of the rail 80, Assume that the fixing piece 12 of the housing back surface portion 11 is allowed to move relative to the other edge portion 82 of the rail 80 in a direction in which the fixing piece 12 moves toward and away from the other edge portion 82 (see FIG. 7).

  First, in the case of installation, the operator brings the electrical equipment housing 10 close to the mounting rail 80, tilts the housing 10 slightly with respect to the rail 80, and moves the movable piece one end 21 of the housing back surface portion 11 to the rail 80. (See FIG. 6). Then, when the operator pushes down the housing 10 in a state where the movable piece 20 is hooked on the upper edge portion 81 of the rail 80, it is between the head 31 of the screw 30 and the other end portion 22 of the movable piece 20. When the compressed spring 40 is positioned and the urging force of the spring 40 is applied in the direction in which the movable piece 20 is brought closer to the fixed piece 12, the movable piece 20 hung on the edge 81 moves upward against the urging force of the spring. The other end of the movable piece comes close to the head 31 of the screw as much as possible (see FIG. 7).

  At this time, the distance between the movable piece 20 and the fixed piece 12 is maximized at the housing rear surface portion 11, and the fixed piece 12 contacts the rail edge portion 82 below the lower edge portion 82 of the rail 80. It reaches the position where it can move in the front-rear direction with respect to the rail edge portion 82 without being restrained by. That is, since the fixed piece 12 can be hung on the lower edge 82 of the rail 80, the operator places the lower part of the housing 10 on the rail 80 around the position where the movable piece 20 is hung on the rail edge 81. Move it to the side. When the rail 80 comes into contact with the housing rear surface portion 11 and the fixed piece 12 reaches the lower side of the rail edge portion 82 (see FIG. 8), the operator loosens the force that pushes down the housing 10.

  Along with this, the movable piece 20 is relatively moved in the direction approaching the fixed piece 12 by the biasing force of the spring. However, since the movable piece 20 is not hung on the upper edge 81 of the rail 80 and does not move downward with the fixed piece 12, the housing 10 actually moves upward, and the fixed piece 12 is moved to the rail edge. It will be in the state applied to the part 82 (refer FIG. 2).

  Thus, the movable piece one end 21 is hung on the upper edge 81 of the rail 80, the fixed piece 12 is hung on the lower edge 82, and the rail 80 is sandwiched between the movable piece 20 and the fixed piece 12 so as to be rear of the housing. Transition to a state in which relative movement is not permitted with respect to the portion 11, and the attachment of the housing 10 to the rail 80 is completed.

  Since the urging force of the spring 40 is continuously applied to the screw 30 even after the mounting of the housing 10 is completed, the male screw and the female screw are brought into contact with each other with a predetermined contact pressure. It is possible to maintain a state where it is difficult to loosen due to close contact, and it is possible to reliably prevent unintentional changes in the screwed state, such as loosening, and the adverse effect on the biased state of the spring 40 and the clamping state of the rail 80 by the movable piece 20 and the fixed piece 12 The state where the housing 10 is attached to the rail 80 can be appropriately maintained.

  If the screw 30 is further tightened with respect to the housing 10 while the housing 10 is attached to the rail 80, the movable range of the movable piece 20 is narrowed, and the housing 10 moves the movable piece 20 relatively upward. However, even when the rail 80 is lowered with respect to the rail 80, the amount of movement below the housing is limited, and the fixed piece 12 is maintained in a state in which it is not detached from the rail edge portion 82. That is, even when an external force is applied to move the casing 10 relative to the rail 80 while moving the movable piece 20 relative to the casing 10 against the biasing force of the spring 40, the casing 10 is moved to the rail. The state attached to 80 can be reliably maintained.

  Further, the amount of deformation of the spring 40 can be increased by the amount of tightening the screw 30 to increase the urging force of the spring 40, and the force for clamping the rail 80 between the movable piece 20 and the fixed piece 12 can be strengthened. For example, even when an external force is applied to move the casing 10 in the longitudinal direction of the rail 80, the casing 10 slides and moves relative to the rail 80. The position of the housing 10 can be reliably maintained.

  Subsequently, in the case of removal, the operator pushes down the casing 10 attached to the rail 80, and the movable piece 20 hung on the upper edge 81 of the rail 80 moves upward against the biasing force of the spring. The movable piece other end 22 is brought as close as possible to the head 31 of the screw.

  At this time, the distance between the movable piece 20 and the fixed piece 12 is maximized at the housing rear surface portion 11, and the fixed piece 12 contacts the rail edge portion 82 below the lower edge portion 82 of the rail 80. It reaches the position where it can be separated from the rail edge 82 without being restricted by (see FIG. 9). That is, since the fixed piece 12 can be detached from the lower edge portion 82 of the rail 80, the operator rails the lower portion of the housing 10 around the position where the movable piece 20 is hung on the rail edge portion 81 as it is. Move away from the 80 side (see FIG. 10).

  When the rail 80 is separated from the rear surface portion 11 of the housing and reaches the position where the fixed piece 12 is disengaged from the rail edge portion 82, the operator loosens the force to push down the housing 10 and moves the housing 10 upward to move the housing. The movable piece one end portion 21 of the body back surface portion 11 is removed from the upper edge portion 81 of the rail 80, and the housing 10 is completely removed from the rail 80. In this way, the removal of the device casing 10 from the device mounting rail 80 is completed. In the housing 10 removed from the rail 80, the movable piece 20 moves in a direction approaching the fixed piece 12 by the biasing force of the spring 40, and the distance between the movable piece one end 21 and the fixed piece 12 is It will return to the initial state smaller than the width.

  If the screw 30 is loosened with respect to the housing 10 prior to the above removal work, the movable range of the movable piece 20 is expanded, and when the housing 10 is lowered with respect to the rail 80 in order to remove the housing 10, The distance between the movable piece 20 and the fixed piece 12 that move relative to each other is increased from the normal time, and the amount of displacement of the fixed piece 12 with respect to the rail edge portion 82 is increased, thereby obtaining a state in which the fixed piece 12 and the rail edge portion 82 are largely separated. Thus, when removing the fixed piece 12 from the rail lower edge 82, the housing 10 can be easily moved, and the removal work is facilitated.

  As described above, in the mounting mechanism according to the present embodiment, the movable piece 20 and the fixed piece 12 that are detachable from the edge portions 81 and 82 of the rail 80 are disposed on the back surface portion 11 of the electrical equipment housing 10. The movable piece 20 is urged by the spring 40 toward the side closer to the fixed piece 12, while the movable range of the movable piece 20 is appropriately set by the arrangement of the screws 30, and is attached to and detached from the rail 80. If the movable piece 20 is moved relative to the urging force of the spring 40 by moving the housing 10, the fixed piece 12 moved with respect to the rail 80 reaches the position where it can be easily hooked and detached, so that another instrument is used. The housing 10 can be easily attached to or detached from the rail 80 without any trouble, and the workability is excellent and the cost can be reduced as a simple structure.

  In addition, in the attachment mechanism according to the embodiment, when the electric device housing 10 is attached to and detached from the rail 80, the screw 30 forming the movable piece restraining portion is maintained in a state of being screwed to the housing 10, The moving range of the movable piece 20 is configured to be constrained by the screw 30, but the configuration is not limited thereto, and the screw 30 is unscrewed from the housing 10 when the housing 10 is attached to and detached from the rail 80. You can also.

  Specifically, when the housing 10 is attached to the rail 80, the attachment work is started in a state where the screw 30 is not screwed into the housing 10, and the operator supports the housing 10 and the rail 80. After the movable piece 20 and the fixed piece 12 are hooked on the respective edge portions 81 and 82, the movable piece 20 is restrained by screwing the screw 30 into the housing 10 so that the movable piece 20 and the fixed piece 12 The state in which the rail 80 is clamped can be reliably maintained, and a state where the housing 10 is not detached from the rail 80 can be ensured.

  When removing the housing 10 from the rail 80, the screw 30 and the housing 10 are not completely screwed together by turning the screw 80 in a loosening direction, and then the movable piece 20 and the fixed piece 12 are connected to the rail 80. Each of the edges 81 and 82 is released, and the housing 10 is removed. In both cases of attachment and removal, the freedom of attachment and removal work can be increased and the work can be carried out smoothly by releasing the restraint by the screw 30 of the movable piece 20 and ensuring the maximum movable range.

  Further, in the attachment mechanism according to the embodiment, the through portion 23 that penetrates the screw 30 at the other end of the movable piece 20 is a member that is independent of the initially movable piece 20, and the screw 30 is passed through this first. In this state, it is configured to press fit into the hole of the other end portion 22 of the movable piece 20 and fix it to the movable piece 20, but in addition to this, the member forming the penetrating portion is used as the movable piece other end portion 22. The size of the through hole through which the screw 30 provided in the member forming the through portion is passed due to the transmission of the strain caused by the press fitting when the press fitting is inserted into the hole of the screw hole 32 from the state where the screw portion 32 passes from the screw portion 32. It is also possible to simultaneously deform the thin shaft portion 33 so that only the shaft portion 33 passes therethrough. In this case, it is not necessary to perform additional processing to prevent the screw 30 from dropping off separately on the member forming the through portion, and the efficiency of the manufacturing work can be improved, and the influence on the press-fitting state by the separate processing can be avoided, Reliability as a part after integrated processing is also improved.

  In the mounting mechanism according to the embodiment, the screw 30 is used as the movable piece restraining portion, and the head portion 31 of the screw forms the tip of the movable piece restraining portion. However, the present invention is not limited to this. , Projecting and arranged on the outer surface of the casing in a state of penetrating the other end of the movable piece, so that a spring can be disposed between the distal end portion made larger than the side closer to the casing and the other end of the movable piece. As long as there exists, you may use the structure which can be attached or detached with respect to a housing | casing or completely fixed except a screw | thread.

DESCRIPTION OF SYMBOLS 1 Attachment mechanism 10 Housing | casing 11 Back surface part 12 Fixed piece 20 Movable piece 21 One end part 22 Other end part 23 Through part 30 Screw 31 Head 32 Screw part 33 Shaft part 40 Spring 80 Rail 81, 82 Edge part

Claims (5)

In the electrical equipment mounting mechanism that allows the electrical equipment housing to be attached to the top-hat rail for electrical equipment installation,
A movable piece that is slidably disposed along a back surface facing the rail of the housing, and has one end projecting from the back surface of the housing and being detachable from one edge of the rail; ,
A fixed piece projecting from the case on the back surface of the case and detachable from the other edge of the rail; and a sliding direction approaching the fixed piece of the movable piece on a predetermined outer surface of the case; A movable piece restraining portion that is disposed as an arrangement that protrudes in a parallel direction and has a shape in which the tip in the protruding direction is larger than the side near the housing;
A spring that urges the movable piece in a direction approaching the fixed piece,
The predetermined length range of the other end of the movable piece is bent at a right angle with respect to the remaining portion of the movable piece, and is in a direction parallel to the outer surface of the housing having the movable piece restraining portion,
The movable piece restraining portion is integrated with the housing through the other end of the movable piece that is bent,
The spring is disposed between the distal end portion of the movable piece restraining portion and the other end portion of the movable piece in a state where the spring is compressed to generate an urging force, and the movable piece is urged to be a fixed piece. Move the moving piece and the fixed piece smaller than the rail width in the state where no other force is applied from the outside,
When the distal end portion of the movable piece restraining portion is as close as possible to the distal end portion of the movable piece, the fixed piece on the rear surface of the housing is placed on one end of the rail while the one end portion of the movable piece is hung on one edge of the rail. An electric equipment mounting mechanism characterized by being arranged to allow a state of relative movement in a direction approaching and separating from the other edge of the rail. In the electric equipment mounting mechanism according to claim 1,
The movable piece restraining portion is a screw that is screwed into the housing with the screw axial direction being the same direction as the protruding direction, and the screw portion penetrates the other end portion of the movable piece that is bent, and the screw head as the tip portion An electrical equipment mounting mechanism, wherein the spring is interposed between the first portion and the other end of the movable piece. In the electric equipment mounting mechanism according to claim 2,
The movable piece restraining portion can adjust the screwed state by rotating the screw in the tightening direction with respect to the housing. By tightening the screw, one end of the movable piece is hooked on one edge of the rail and the fixed piece is The direction in which the fixed piece is separated from the other edge of the rail even when the other end of the movable piece is as close as possible to the screw head as the tip in the state where the housing is attached to the other edge of the rail. The electrical device mounting mechanism is characterized in that relative movement is impossible. In the electric equipment mounting mechanism according to claim 2 or 3,
The movable piece restraining portion has a shaft portion thinner than the screw portion and the head portion between the screw portion and the head portion,
While the penetrating portion that penetrates a part of the movable piece restraining portion at the other end of the movable piece passes through the shaft portion so as to be able to rotate and move in the axial direction, it has a hole shape thinner than the screw portion, and passes through the screw portion. An electrical equipment mounting mechanism characterized by not allowing In the electric equipment mounting mechanism according to any one of claims 1 to 4,
The casing is formed in a box shape by bending a metal plate-like body, and a plurality of plate portions are arranged to overlap each other at a part of the back surface portion, and a substantially plate-shaped movable piece slides between the overlapping plate portions. An electrical equipment mounting mechanism characterized in that it is housed in a movable manner.

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