JP4547636B2 - Rail-mounted electronic equipment - Google Patents

Description

  The present invention rotates the electronic device main body in a state where the electronic device main body is in contact with the device mounting rail having a pair of locking pieces, and is locked to each of the pair of engaging means provided in the electronic device main body. More particularly, the present invention relates to a rail-mounted electronic device that is easy to mount and remove and has high work safety.

  Electronic equipment (for example, control equipment, switches, industrial terminal blocks, etc.), when installed in a factory or an experimental site, equipment mounting rails having a pair of locking pieces (for example, JIS C 2812-1998) Standard top-hat type DIN rail, C-type rail, G-type rail, DIN rail has a pair of locking pieces facing outward from the outer wall of the rail. In many cases, the rail is attached to a pair of locking pieces that are provided inward from the inner wall of the rail. In addition, electronic devices that are attached to a device mounting rail are collectively referred to as rail-mounted electronic devices (hereinafter abbreviated as devices). In the case of such a top hat type DIN rail, such a device is provided with a rail groove portion into which the DIN rail is inserted, and a fixed hook provided at one end of the rail groove portion and a movable hook provided at the other end. A configuration in which a pair of locking pieces at both ends of the DIN rail is fixed is common. Then, the movable hook is slid to be attached and detached, and roughly divided into a spring type and a latch type (for example, see Patent Document 1).

A description will be given of how to attach and detach equipment to / from the DIN rail in each method.
In the spring type, the device is pressed against the DIN rail, and the movable hook side is temporarily deformed or slid by the force at that time. Then, the deformation of the movable hook is returned and fixed with the DIN rail inserted into the rail groove. Also, for the latch type, slide the movable hook, stop the movable hook with the latch, keep it open, hold the device in place, remove the latch and slide the movable hook, etc. Operate to the fixed state. On the other hand, when removing either of the devices, the movable hook is slid to remove it from the locking piece of the DIN rail or completely opened, and then the device is removed.

  In this way, it is difficult to form a strong hook directly on the equipment body because of the need to move the hook on one side, and it is not possible to provide the same strength to the movable hook compared to the fixed hook, ensuring the equipment It is difficult to securely fix a particularly heavy device when fixing to a cable.

  Also, if the strength of the movable hook is increased in order to fix it securely, it is necessary to apply a large force to open the movable hook when removing the device. It is difficult to achieve both strength at the time of installation and operability at the time of attachment and detachment.

  Further, in order to configure the movable hook, a structure for forming a spring structure or holding another component to be latched becomes complicated, which is a major factor in deterioration of manufacturability and cost increase. Furthermore, the movable hook itself cannot be enlarged, and in consideration of stability, the fixed hook and the movable hook are formed at a plurality of locations in the central portion of the device or symmetrically, so that the movable hook is opened. Therefore, the structure is complicated and the configuration of the equipment is a great constraint. Furthermore, since relatively large and heavy equipment requires a plurality of mounting portions, particularly a plurality of movable hooks, it has been made more difficult to reliably attach and detach.

  In addition, when removing the device, the movable hook must be opened while holding the device itself, and it is not possible to work with one hand. For devices with multiple movable hooks, Hooking alone makes it difficult to work alone. Even in the case of the latch type, the device must be supported with one hand while all the hooks are opened, and the attaching / detaching operation is sometimes difficult and even dangerous.

  Therefore, with regard to the mounting and dismounting of the rails of the equipment, both the stability during mounting and the ease of mounting are combined, and in consideration of manufacturability, both hooks are fixed, the equipment body is rotated, and the DIN rail locking piece There is one that engages the portion and the fixing hook (for example, see Patent Document 2).

Such an apparatus is shown in FIGS.
FIG. 7 is a diagram showing a configuration of a conventional rail-mounted electronic device and a DIN rail. FIG. 7A is a view seen from the back side of the device that is the mounting surface of the DIN rail, FIG. 7B is a side view, and FIG. 7C is a cross-sectional view of the DIN rail. . FIG. 8 is a view showing a state in which a conventional rail-mounted electronic device is attached to a DIN rail. Fig.8 (a) is the figure seen from the back surface of the apparatus used as the attachment surface of a DIN rail, FIG.8 (b) is a side view.

  7 and 8, the device 10 has a rail groove 11 into which a DIN rail 20 having a pair of locking pieces 21 is inserted. The rail groove 11 includes a first groove 11a and a second groove 11b. The groove portion 11a has a groove width La substantially equal to the width L1 including the locking piece portion 21 of the DIN rail 20, and is provided in the horizontal direction of the apparatus 10 main body. The width (outside dimension) between the outer walls not including the locking piece portion 21 of the DIN rail 20 is L2.

  The groove 11b is inclined with respect to the first groove 11a by an angle θ (for example, from the upper left to the lower right) about the rotation center P provided at the center of the apparatus 10 body, and the groove width Lb is DIN. It is slightly wider than the width L1 of the rail 20. The rail groove 11 has a shape in which the groove 11a and the groove 11b are overlapped. That is, the rail groove 11 has a shape bent at an angle θ with the central portion of the main body of the device 10 as the center.

  The fixing hook 12 is provided at the upper end of the groove 11a. The fixing hook 13 is provided at the lower end of the groove 11a. The fixing hooks 12 and 13 are cut off on the extended line of the groove 11b from the portion where the grooves 11a and 11b intersect.

  The pin hole 14 is provided in the groove portion 11 b through the back surface from the front surface of the device 10, and is provided at a position that does not overlap with the locking piece portion 21 of the DIN rail 20 when the DIN rail 20 is engaged. The screw 15 is inserted into the pin hole 20 from the front surface of the device 10, and the tip of the screw 15 protrudes into the groove 11b. Here, the pin hole 14 and the screw 15 are rotation stoppers.

The operation of attaching and detaching such a device to / from the DIN rail 20 will be described.
The device 10 body is rotated counterclockwise by an angle θ, and the DIN rail 20 is pressed against the groove 11 b of the rail groove 11. Then, the device 10 main body is rotated clockwise by an angle θ around the rotation center P while being pressed and in contact with the device 10 to make the device 10 horizontal, and the DIN rail 20 is aligned with the position of the groove 11a of the rail groove 11. . Thereby, the locking piece 21 of the DIN rail 20 is engaged with the fixing hooks 12 and 13, and the device 10 is fixed to the DIN rail 20. Then, the screw 15 is inserted into the pin hole 14 and protrudes into the groove 11b. Thereby, rotation to the counterclockwise direction (reverse rotation) of an apparatus main body can be blocked | prevented.

  Subsequently, the removal will be described. The screw 15 is taken out from the pin hole 14, the device 10 main body is rotated counterclockwise by an angle θ, the locking piece 21 and the fixing hooks 12, 13 of the DIN rail 20 are removed, and the device 10 main body is removed from the DIN rail 20.

Japanese Patent Laid-Open No. 06-223927 (paragraph numbers 0011-0024, FIG. 1) JP 2002-073114 (paragraph number 0038-0056, FIG. 1-3 of the drawing)

  Since the fixing hooks 12 and 13 are used in this way, it is not necessary to separately attach a mechanism for moving or separate parts, and it is possible to create a shape integrally with the apparatus main body in advance, which has a great effect in terms of manufacturability and cost. Born. Moreover, it is very strong compared to the movable hook, and not only realizes stable holding even for heavy equipment, but also compared to the horizontal width of the equipment 10 often found in the movable hook. Since it is possible to receive a force with “line” instead of fixing with a narrow “point”, extremely high stability and vibration resistance can be obtained when fixing the device.

  Further, in the situation where the device 10 is mounted using the DIN rail 20, when considering the force and acceleration in the translational direction, the force exceeding the weight of the device 10 due to resonance due to the rigidity of the DIN rail 20 and the weight of the device 10. Must be held with a hook. However, in the configuration shown in FIGS. 7 and 8, there is very little situation in which a force or acceleration in the rotational direction is applied to the device 10 or the DIN rail 20 in normal vibration or the like, and the rotation stoppers (pin holes 14 and screws 15) The device 10 is not easily detached.

  However, for attachment and removal, the device 10 is supported with one hand, and the screw 15 is inserted into the pin hole 14 or removed from the pin hole 14. Furthermore, a tool is required, work becomes complicated, and safety is inferior. Further, it is necessary to work while considering that the screw 15 is not lost.

  On the other hand, although there is a configuration using a movable pin instead of the screw 15, to remove the device 10 from the DIN rail 20, pull the movable pin from the groove portion 11b with one hand and reversely rotate the device 10 with the other hand. Since it is necessary to remove it, the work becomes complicated and the device 10 is supported by one hand, so the work safety is inferior.

  SUMMARY OF THE INVENTION An object of the present invention is to realize a rail-mounted electronic device that can be easily attached and detached and has high work safety.

The invention described in claim 1
The electronic device main body is rotated in contact with a device mounting rail having a pair of locking pieces, and the pair of locking pieces of the rail is attached to each of the pair of engaging means provided in the electronic device main body. Rail-mounted electronic equipment to be engaged and attached,
Having a center of rotation at a position different from the center of gravity of the electronic device body in the horizontal direction ,
The engagement piece and the engagement means are more engaged by a moment generated by the positional relationship between the center of gravity and the rotation center .

The invention according to claim 2 is the invention according to claim 1,
The center of rotation is characterized by being decentered from the center in the horizontal direction of the main body of the electronic device.

The invention described in claim 3
A rail groove into which a device mounting rail having a pair of locking pieces on the outside is inserted, and engaging means provided at both ends of the rail groove in the vertical direction; A rail-mounted electronic device that rotates the electronic device main body with the rail inserted, and engages each of the pair of locking pieces of the rail with the engaging means to be attached to the rail,
Having a center of rotation at a position different from the center of gravity of the electronic device body in the horizontal direction ,
The engagement piece and the engagement means are more engaged by a moment generated by the positional relationship between the center of gravity and the rotation center .

The invention according to claim 4 is the invention according to claim 3,
The center of rotation is characterized by being decentered from the center in the horizontal direction of the main body of the electronic device.

The invention according to claim 5 is the invention according to claim 3 or 4,
The center of gravity is located directly below the engaging means provided at the upper end of the rail groove.

The invention according to claim 6 is the invention according to any one of claims 3 to 5,
The rail groove portion is provided with a holding portion that contacts the inner wall portion of the rail and holds the device main body.

The invention according to claim 7 is the invention according to claim 6,
A holding part hold | maintains the inner wall part facing the latching piece part which is not engaged with the said engaging means among the rails inserted in the said groove part for rails, It is characterized by the above-mentioned.

The invention according to claim 8 is the invention according to any one of claims 1 to 7 ,
When the apparatus main body is tilted by attachment and detachment, an excision part is provided in which a portion protruding in the horizontal direction from the attached state is excised.

The invention according to claim 9 is the invention according to any one of claims 1 to 8 ,
Of the locking piece portion of the rail, a portion that does not engage with the engaging portion and a fixed piece that contacts one end,
One end is integrated on the lower surface or upper surface of the device body, and the other end has an elastic support piece connected to the other end of the fixed piece,
By pushing the elastic support piece toward the electronic device main body, the fixed piece is pulled into the electronic device main body.

As is apparent from the above description, the present invention has the following effects.
According to the first to ninth aspects of the invention, since the rotation center is provided at a position different from the center of gravity of the device main body in the horizontal direction, the device can be mounted on the rail without providing a rotation stopper (for example, a pin hole and screw). In the mounted state, a moment of force obtained by multiplying the weight of the device by the distance works, works in the direction of maintaining the level of the device, and can be fixed stably. This eliminates the need for a tool for inserting a screw into or out of the pin hole, facilitates installation and removal, and further increases the safety of the operation. In particular, a heavy device can be operated while supporting the device with both hands, so that the operation is easy and the safety is improved.

  According to the invention of claim 2, since the center of rotation is eccentric from the central portion in the horizontal direction of the apparatus body, it is possible to take a long engagement means that takes a heavy weight during installation, and further increase the strength against the weight. Stability can be increased.

  According to the fourth aspect, since the rotation center is eccentric from the central portion in the horizontal direction of the apparatus main body, it is possible to take the upper engaging means that takes a heavy weight at the time of attachment, and further increase the strength against the weight. Stability can be increased.

  According to the seventh aspect, since the holding portion holds the inner wall portion facing the locking piece portion that is not engaged with the engaging means among the rails inserted into the rail groove portion, the device is railed in a more stable state. Can be installed and fixed to. This is particularly effective when the center of rotation deviates significantly from the central part of the device, the engagement means becomes short, and the mounting becomes unstable.

According to the eighth aspect , even when the apparatus main body is rotated by an angle θ during the installation or removal of the apparatus, it does not interfere with the adjacent apparatus by the excision part obtained by excising the portion protruding in the horizontal direction from the state of being attached to the rail. Thereby, an apparatus can be attached and detached without removing an adjacent apparatus, and work can be facilitated.

According to the ninth aspect , one end of the elastic support piece is integrated on the lower surface or the upper surface of the device main body, and the other end is connected to the other end of the fixed piece. By pushing, the fixed piece is pulled to the equipment body side to release the rail. As a result, when the device is removed, the fixing piece can be released while holding the device main body, the removal work can be facilitated, and the safety of the work can be increased. In particular, a heavy device can be operated while supporting the device with both hands, so that the operation is easy and the safety is improved.

Embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
FIG. 1 is a block diagram showing a first embodiment of the present invention. Here, the same components as those in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof is omitted. FIG. 1A is a view as seen from the back side of a device to be a DIN rail mounting surface, FIG. 1B is a side view, and FIG. 1C is a cross-sectional view of the DIN rail. .

  In FIG. 1, the device 30 has a rail groove 31 into which a DIN rail 20 having a pair of locking pieces 21 is inserted. Further, the center of gravity G of the device 30 main body in the horizontal direction is located substantially at the center of the device 30 main body in the horizontal direction.

  The rail groove 31 includes a first groove 31a and a second groove 31b. The groove portion 31a has fixing hooks 32 and 33 protruding at both upper and lower ends, the groove width La is substantially equal to the width L1 of the DIN rail 20, and is provided in the horizontal direction of the apparatus 30 main body. Moreover, the groove part 31a is provided in the center of the up-down direction of the apparatus 30 main body.

  The groove portion 31b is inclined at an angle θ with respect to the horizontal direction with respect to the first groove portion 31a, with a rotation center P2 provided at a position eccentric by a distance f1 from the central portion in the horizontal direction of the device 30 body. (For example, from the upper left to the lower right), the groove width Lb is slightly wider than the width L1 of the DIN rail 20. And the groove part 31 for rails becomes the shape which accumulated the groove part 31a and the groove part 31b. That is, the rail groove 31 is bent at an angle θ about the rotation center P2 of the device 30 body.

  The fixed hook 32 is an engaging means and is provided at the upper end of the groove 31a. The fixing hook 33 is an engaging means, and is provided at the lower end of the groove 31a. The fixing hooks 32 and 33 are cut off on the extended line of the groove 31b from the portion where the grooves 31a and 31b intersect. That is, the fixed hook 32 provided at the upper end of the rail groove 31 a is provided above the center of gravity G. In other words, the center of gravity G is located directly below the fixed hook 32 provided at the upper end of the groove 31a.

The operation of attaching and detaching such a device to / from the DIN rail 20 will be described.
The device 30 body is rotated counterclockwise by an angle θ, and the DIN rail 20 is inserted into the groove 31 b of the rail groove 31. Then, with the DIN rail 20 inserted into and in contact with the groove 31b, the device 30 main body is rotated clockwise by the angle θ around the rotation center P2, and the device 30 is leveled. Align with the position of the groove 31a of 31. Thereby, each of the locking piece portions 21 of the DIN rail 20 engages with the fixing hooks 32 and 33, and the device 30 is fixed to the DIN rail 20.

  When the device 30 is attached to the DIN rail 20, the center of gravity G of the device 30 and the rotation center P2 of the device 30 are eccentric in the horizontal direction by the distance f1, and therefore the weight of the device 30 is multiplied by the distance f1. The moment of force is working. In other words, a moment that rotates the device 30 in the clockwise direction acts, is engaged by the fixing hooks 32 and 33, works in a direction that maintains the level of the device 30, and is stably fixed.

  Subsequently, the removal will be described. The device 30 body is rotated counterclockwise by an angle θ to remove the locking piece 21 and the fixing hooks 32, 33 of the DIN rail 20, and the device 30 body is removed from the DIN rail 20.

  Thus, since the rotation center P2 is provided at a position different from the center of gravity G of the apparatus 30 main body in the horizontal direction, as shown in FIG. 7 and FIG. 8, it is not necessary to provide a rotation stopper (pin hole 14 and screw 15). In the state where the device 30 is attached to the DIN rail 20, a moment of a force obtained by multiplying the weight of the device 30 by the distance f1 works and works in the direction of maintaining the level of the device 30 and can be fixed stably. This eliminates the need for a tool for inserting the screw 15 into the pin hole 14 or removing it from the pin hole 14, facilitating installation and removal work, and further increasing the safety of the work. In particular, a heavy device can be operated while supporting the device with both hands, so that the operation is easy and the safety is improved.

  Further, since the rotation center P2 is decentered from the central portion in the horizontal direction of the device 30 main body, it is possible to take the upper fixing hook 32, which takes a heavy weight at the time of attachment, and further enhances the strength stability against the weight. Can be increased.

[Second Embodiment]
Next, an example in which the device 30 can be easily attached and detached when the device 30 is used by being attached to the DIN rail 20 adjacent to a different device will be described. When a device different from the device 30 is attached to the DIN rail 20, there is often no gap between the device 30 and the different device in order to attach more. FIG. 2 is a block diagram showing a second embodiment of the present invention suitable for a case where a plurality of attachments are made in this way. Here, the same components as those in FIG. 2A is a view as seen from the back of the device that is the mounting surface of the DIN rail 20, and FIG. 2B is a perspective view (however, the center of gravity G and the rotation center P2 are not shown). .

  In FIG. 2, when the apparatus 30 main body is tilted by attachment and detachment, cut portions 34 and 35 are provided by cutting out portions protruding in the horizontal direction from the state attached to the DIN rail 20. The excision part 34 is obtained by excising a part (upper left) of the vertical surface 36 close to the rotation center P2 of the main body 30. This vertical surface is orthogonal to the length direction of the DIN rail 20 and is perpendicular to the horizontal plane. This is a serious aspect. The excision part 35 is obtained by excising a part (lower right) of the vertical surface 37 that opposes the vertical surface 36 provided with the excision part 34.

  In other words, when the distance from the rotation center P2 to the vertical surface 36 is R1, the cut portion 34 has a circular arc with an angle θ upward from the horizontal axis on the circumference of the radius R1 with the rotation center P2 as the center. Cut along the arcuate surface 34a. Further, the portion exceeding the angle θ is cut off by the inclined surface 34b having the angle θ with respect to the vertical surface 36 along the arc tangent of the arc surface 34a.

  In addition, when the distance from the rotation center P2 to the vertical surface 37 is R2, the cut portion 35 is formed into an arc of an angle θ downward from the horizontal axis on the circumference of the radius R2 with the rotation center P2 as the center. The cut surface 35a is cut off. Further, the portion exceeding the angle θ is cut off by the inclined surface 35b having the angle θ with respect to the vertical surface 37 along the arc tangent of the arc surface 35a.

  The operation of attaching and detaching such an apparatus is the same as that of the apparatus shown in FIG. 1, but the operation is different even when the apparatus 30 is rotated counterclockwise by an angle θ when the apparatus 30 is attached and detached. , 35 does not interfere with adjacent different devices.

  As described above, when the device 30 is attached or removed, even if the device 30 is rotated counterclockwise by an angle θ, the cut portions 34 and 35 are formed by cutting out the portions protruding in the horizontal direction from the state attached to the DIN rail 20. Does not interfere with adjacent equipment. Thereby, the apparatus 30 can be attached and detached without removing the adjacent apparatus, and the operation can be facilitated.

  Further, the arc surfaces 34a and 35a along the arc from the horizontal axis to the angle θ and the portions exceeding the angle θ are inclined surfaces 34b and 35b having an angle θ with respect to the vertical surfaces 36 and 37 along the tangent line of the arc. Since it is excised, the deletion parts 34 and 35 can be minimized.

[Third embodiment]
3 and 4 are configuration diagrams showing a third embodiment of the present invention. Here, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. Also, reference numerals are given only to the newly changed portions, and the remaining reference numerals are omitted. 3 is a perspective view, FIG. 4A is a view as seen from the back of the device that is the mounting surface of the DIN rail 20, and FIG. 4B is a cross-sectional view taken along line AB of FIG. 4A. It is sectional drawing of a line. 3 and 4, a rotation stop means 36 integrated with the device 30 is provided. The rotation stop means 36 is substantially L-shaped and includes a fixed piece 36a and an elastic support piece 36b. The fixed piece 36a is in contact with a portion of the DIN rail 20 that does not engage with the fixed hook 33 (lower right of the DIN rail 20) when the device 30 is attached to the DIN rail 20.

  One end of the elastic support piece 36b is integrated on the lower surface of the main body of the device 30, and the other end is connected to the other end of the fixed piece 36a. That is, since the rotation stop means 36 is connected only at one end of the elastic support piece 36b, the fixed piece 36a is moved to the apparatus 30 main body side (upper side) by pushing the elastic support piece 36b toward the apparatus 30 main body side (upper side). It is pulled into the front side.

The operation of attaching and detaching such a device to / from the DIN rail 20 will be described.
The device 30 body is rotated counterclockwise by an angle θ, and the DIN rail 20 is inserted into the groove 31 b of the rail groove 31. As a result, the fixing piece 36 a is pushed toward the main body side of the device 30 by the locking piece portion 21. Then, with the DIN rail 20 inserted into and in contact with the groove 31b, the device 30 main body is rotated clockwise by the angle θ around the rotation center P2, and the device 30 is leveled. Align with the position of the groove 31a of 31. Thereby, each of the locking piece portions 21 of the DIN rail 20 engages with the fixing hooks 32 and 33, and the device 30 is fixed to the DIN rail 20. Further, the fixed piece 36a comes off from the locking piece portion 21, and the deformation of the fixed piece 36a returns due to the elasticity of the elastic support piece 36b, and the rail 20 is fixed at one end of the fixed piece 36a to prevent reverse rotation.

  Subsequently, the removal will be described. With the finger placed on the elastic support piece 36b and holding the device 30, the other end of the elastic support piece 36b is pushed upward, i.e., toward the center of the device 30 (in the direction of arrow 100 in FIG. 4B). Thereby, the fixing piece 36a is pushed to the main body side of the device 30, and the fixing is released while the device 30 is held. Then, while holding the elastic support piece 36b, that is, in a state where the fixation by the fixed piece 36a is released, the device 30 main body is rotated counterclockwise by an angle θ and the locking piece portion 21 of the DIN rail 20 and the fixed hook 32 are rotated. , 33 and the main body 30 is removed from the DIN rail 20.

  For example, if the device 30 is higher than the waist, a part other than the thumb is placed on the upper surface of the device 30 and the other end of the elastic support piece 36b is pushed upward with the thumb. Thereby, the fixing piece 36a is pushed to the main body side of the device 30, and the fixing is released while the device 30 is held. On the other hand, if the device 30 is at a position lower than the waist, the thumb is placed on the upper surface of the device 30, and the other end is placed on the lower surface of the device 30 and the other end of the elastic support piece 36b is pushed upward with, for example, the middle finger. Thereby, the fixing piece 36a is pushed to the main body side of the device 30, and the fixing is released while the device 30 is held.

  Thus, one end of the elastic support piece 36b is integrated on the lower surface of the main body of the device 30 and the other end is connected to the other end of the fixed piece 36a. By pushing, the fixing piece 36a is pulled into the main body of the device 30 and the fixing of the DIN rail 20 is released. As a result, when the device 30 is removed, the fixing piece 36a can be released while holding the device 30 main body, the removal work can be facilitated, and the safety of the work can be increased. In particular, a heavy device can be operated while supporting the device with both hands, so that the operation is easy and the safety is improved.

[Fourth embodiment]
FIG. 5 is a block diagram showing a fourth embodiment of the present invention. 1 to 4 are denoted by the same reference numerals and description thereof is omitted. Also, reference numerals are given only to newly changed parts and parts necessary for explanation, and the remaining reference numerals are omitted. In FIG. 5, a holding portion 37 that is in contact with the inner wall portion of the DIN rail 20 and holds the device 30 main body is newly provided in the groove portion 31 a of the rail groove portion 31.

  The holding part 37 is a substantially parallelogram-shaped protrusion. Then, the protrusion having the height Lc centered on the rotation center P2 is cut off at two sides from the upper left to the lower right with the angle θ and the width Ld and centering on the rotation center P2 with respect to the horizontal direction. It has a different shape. The width Lc is substantially the same as the width L2 of the DIN rail 20, and the width Ld is narrower than the width (inside dimension) between the inner walls of the DIN rail.

  The operation of attaching and detaching such a device is the same as that of the device shown in FIG. 1 except that the upper end of the holding portion 37 is engaged with the upper end of the DIN rail 20 inserted into the rail groove portion 31 in the attached state. The inner wall part which opposes the latching piece part 21 of the part which is not engaged with the fixed hook 32 among the stop piece parts 21 is hold | maintained. Similarly, the lower end of the holding portion 37 has an inner wall portion facing the locking piece portion 21 of the locking piece portion 21 at the lower end of the DIN rail 20 inserted into the rail groove portion 31 and not engaged with the fixing hook 33. Hold.

  As described above, the holding portion 37 holds the inner wall portion facing the locking piece portion 21 that is not engaged with the fixing hooks 32 and 33 in the DIN rail 20 inserted into the rail groove portion 31, so that it is more stable. In this state, the device 30 can be attached and fixed to the DIN rail 20. This is particularly effective when the rotation center P2 is significantly deviated from the central portion of the device 30 and the fixing hook 33 is shortened and the mounting becomes unstable.

[Fifth embodiment]
Next, an example of a device that is attached to a C-shaped rail in which a pair of locking pieces are provided inside the rail will be described. FIG. 6 is a block diagram showing a fifth embodiment of the present invention.
FIG. 6A is a view seen from the back side of the device to be the attachment surface of the C-shaped rail, and FIG. 6B is a side view (state attached to the C-shaped rail), and FIG. ) Is a cross-sectional view of a C-shaped rail.

  In FIG. 6, the device 50 has a rail projection 51 that is inserted into a C-shaped rail 40 having a pair of locking pieces 41 inside. Further, the center of gravity G of the device 50 main body in the horizontal direction is located substantially at the center in the horizontal direction of the device 50 main body. The width between the locking pieces 41 of the C-shaped rail 40 is L3, the width between the inner walls of the C-shaped rail 40 (inner dimension) is L4, and the width between the outer walls of the C-shaped rail 40 (outer dimension) is the same. Let L5. The rotation center P3 of the device 50 is provided at a position that is eccentric from the central portion in the horizontal direction of the device 50 main body by a distance f1.

  The rail projection 51 has protruding fixing hooks 52 and 33 at both upper and lower ends. The rail projection 51 has a shape similar to that of the holding unit 37 of the device 30 shown in FIG. 5 and is a substantially parallelogram-shaped projection. Then, a protrusion having a width Le in the height direction around the rotation center P3 of the device 50 is an angle θ with respect to the horizontal direction, a width Lf, and 2 from the upper left to the lower right direction around the rotation center P3. The shape is cut out at the side. The width Le is substantially the same as the width L3 between the locking pieces 41, and the width Lf is slightly narrower than the width L3 between the locking pieces 41. Of course, the width including the fixing hooks 52 and 53 is wider than the width L3 between the locking pieces 41.

  The fixed hook 52 is an engaging means, and is provided at the upper end of the rail projection 51. The fixing hook 53 is an engaging means, and is provided at the lower end of the rail projection 51. That is, the fixed hook 53 provided at the lower end of the rail projection 51 is provided below the center of gravity G. In other words, the center of gravity G is located directly above the fixed hook 53 provided on the lower side of the rail projection 51.

  Similar to the cutting portions 34 and 35 of the device 30, the cutting portions 54 and 55 are arranged in the horizontal direction from the state of being attached to the C-type rail 50 when the device 50 main body is tilted by attachment to and removal from the C-type rail 40. The protruding part is cut out. Since the shape is the same as that of the cut portions 34 and 35 of the device 30, the description thereof is omitted.

  The holding portions 56 are provided above and below the rail projections 51 and are projections that contact the outer wall of the C-type rail 40 and hold the device 50 main body. Specifically, the C-type rails into which the rail projections 51 are inserted 40 is a protrusion that holds the outer wall portion facing the locking piece 41 that is not engaged with the fixed hooks 52 and 53. The shape of the holding portion 56 is the same as that of the portion of the back surface of the device 30 shown in FIG. 2 other than being recessed by the groove portion 31, and the width corresponding to the width La of the device 30 is substantially the same as the width L4 of the C-shaped rail 40. Thus, the width corresponding to the width Lb of the device 30 is wider than the width L5 of the C-shaped rail 40.

The operation of attaching and detaching such a device to / from the C-shaped rail 40 will be described.
The device 50 main body is rotated counterclockwise by an angle θ, and the rail projection 51 is inserted into the C-shaped rail 40. Then, with the rail projection 50 inserted into and in contact with the C-shaped rail 40, the device 50 main body is rotated clockwise by an angle θ around the rotation center P3, and the device 50 is leveled. 40 is aligned with the position of the rail projection 51. Thereby, each of the locking piece portions 41 of the C-shaped rail 40 engages with the fixing hooks 52 and 53, and the device 50 is fixed to the C-shaped rail 40.

  In the state where the device 50 is attached to the C-shaped rail 40, the center of gravity G of the device 50 and the rotation center P3 of the device 50 are eccentric by a distance f1 in the horizontal direction. The moment of the multiplied force works. In other words, a moment that rotates the device 50 in the clockwise direction works, is engaged by the fixing hooks 52 and 53, works in a direction that maintains the level of the device 50, and is stably fixed.

  In addition, the upper holding portion 56 in the attached state becomes the locking piece portion 41 that is not engaged with the fixed hook 52 among the locking piece portion 41 at the upper end of the C-shaped rail 40 into which the rail projection 51 is inserted. Hold the opposing outer wall. Similarly, the lower end of the lower holding portion 56 is opposed to the locking piece portion 41 of the locking piece portion 41 at the lower end of the C-shaped rail 40 into which the rail projection 51 is inserted, which is not engaged with the fixing hook 53. Hold the outer wall.

  Subsequently, the removal will be described. The device 50 main body is rotated counterclockwise by an angle θ to remove the locking piece 41 and the fixing hooks 52 and 53 of the C-shaped rail 40, and the device 50 main body is removed from the C-shaped rail 40.

  Furthermore, even when the device 50 is attached or detached, even if the angle θ is rotated counterclockwise in the same manner as the cut portion 34 of the device 30, the cut portions 54 and 55 do not interfere with adjacent devices.

  Thus, since the rotation center P3 is provided at a position different from the center of gravity G of the device 50 main body in the horizontal direction, as shown in FIGS. 7 and 8, the rotation stoppers (pin holes 14 and screws 15) are not provided. In a state where the device 50 is attached to the C-shaped rail 50, a moment of a force obtained by multiplying the weight of the device 50 by the distance f1 works, works in the direction of maintaining the level of the device 50, and can be fixed stably. . This eliminates the need for a tool for inserting the screw 15 into the pin hole 14 or removing it from the pin hole 14, facilitating installation and removal work, and further increasing the safety of the work. In particular, a heavy device can be operated while supporting the device with both hands, so that the operation is easy and the safety is improved.

  In addition, since the rotation center P3 is eccentric from the central portion in the horizontal direction of the device 50 main body, it is possible to take the lower fixing hook 53 which takes a heavy weight during installation, and it is more stable against the weight. Can be increased.

  Further, even when the device 50 is attached or removed, even if the device 50 is rotated counterclockwise by an angle θ, it is adjacent by the cut-out portions 54 and 55 in which the portions protruding in the horizontal direction from the state attached to the C-shaped rail 40 are cut off. Does not interfere with the equipment to be used. Thereby, the apparatus 50 can be attached and detached without removing the adjacent apparatus, and the work can be facilitated.

  Further, since the arc surface along the arc from the horizontal axis to the angle θ and the portion exceeding the angle θ are cut off at the inclined surface of the angle θ with respect to the vertical axis along the tangent line of the arc, the deletion units 54 and 55 Can be minimized.

  Moreover, since the holding | maintenance part 56 hold | maintains the outer wall part which opposes the latching piece part 41 which is not engaged with the fixed hooks 52 and 53 among the C-shaped rails 40 which insert the rail projection part 51, in a more stable state The device 50 can be attached and fixed to the C-shaped rail 50. In particular, when the rotation center P3 is significantly deviated from the central portion of the device 50 and the fixing hook 52 becomes short and the mounting becomes unstable, or the device 50 has a long width and the fixing hook 53 is sufficiently long with respect to the width of the device 50. This is effective when the thickness is not stable or the strength is insufficient.

In addition, this invention is not limited to this, The following may be sufficient.
(1) In the device shown in FIGS. 1 to 6, the center of gravity G is located at the substantially central portion of the devices 30 and 50, but the center of gravity G may be shifted from the central portion. For example, when the center of gravity G is on the right side of the central portion of the devices 30 and 50, the rotation centers P2 and P3 may be provided in the central portion of the devices 30 and 50. Of course, since the rotation direction of the devices 30 and 50 is clockwise due to the moment of the center of gravity G, the fixed hooks 32 and 33 and the locking piece 21 are more engaged, and similarly, the fixed hooks 52 and 53 are locked. The one part 41 is more engaged and works in the direction of maintaining the level of the devices 30 and 50 and can be fixed stably.

  On the other hand, when the center of gravity G of the devices 30 and 50 is on the left side of the central portion of the devices 30 and 50, the rotation centers P2 and P3 are provided on the right side from the central portion of the device 30, and accordingly, the configuration is symmetrical. Become.

  That is, when the center of gravity G is on the right side of the central portion of the device 30 main body, the rotation center P2 is provided on the left side (including the central portion) from the central portion, and the second groove portion 31b is also provided from the upper left to the lower right. Good. On the other hand, when the center of gravity G is on the left side of the central portion of the device 30 main body, the rotation center P2 is provided from the central portion to the right side (including the central portion), and the second groove portion 31b is also provided from the upper right to the lower left direction. Good. When the center of gravity G is the central portion of the device main body 30, the rotation center P2 may be a position different from the central portion, and may be on either the left or right side. Similarly, in the device 50 shown in FIG. 6, the rail projection 51 has a bilaterally symmetric configuration depending on the position of the rotation center P <b> 3. The excision parts 34, 35, 54, 55, the rotation stopping means 36, and the holding parts 37, 56 are also left-right symmetric depending on the positions of the rotation centers P2, P3.

(2) In the apparatus shown in FIGS. 2 to 6, the excision portions 34, 35, 54, and 55 are configured to excise from the horizontal axis to the angle θ along the arc, but excise along the arc string. May be.

(3) In the device shown in FIG. 4, the configuration in which the rotation stopping means 36 is provided on the lower surface is shown, but it may be provided on the upper surface. That is, the elastic support piece 36b may be integrated on the upper surface. Note that the apparatus shown in FIG. 6 may also be provided with rotation stopping means comprising a fixed piece 36a and an elastic support piece 36b, as in FIGS.

(4) In the device shown in FIG. 6, the configuration in which the cut portions 54 and 55 and the holding portion 56 are provided is shown. However, both of them may not be provided or only the cut portions 54 and 55 or the holding portion 56 are provided. It is good.

(5) In the apparatus shown in FIG. 6, the configuration of attaching to the C-type rail 40 is shown, but it may be attached to the G-type rail. In this case, the mounting surface (distance from the back surface of the device 50) of the locking piece portion of the G-type rail is different, but the position (distance from the back surface of the device 50) where the fixing hooks 52 and 53 of the rail projection 51 protrude. It is good to shift and provide according to the locking piece part of a G type rail.

It is the block diagram which showed the 1st Example of this invention. It is the block diagram which showed the 2nd Example of this invention. It is the block diagram which showed the 3rd Example (perspective view) of this invention. It is the block diagram which showed the 3rd Example of this invention. It is the block diagram which showed the 4th Example of this invention. It is the block diagram which showed the 5th Example of this invention. It is a block diagram of the conventional rail mounting type electronic device (detached state). It is a block diagram of the conventional rail attachment type electronic device (attachment state).

Explanation of symbols

30, 50 Equipment 31 Groove 32, 33, 52, 53 Fixed hook (engagement means)
34, 35, 54, 55 Cut portion 36a Fixed piece 36b Elastic support pieces 37, 56 Holding portion 51 Rail projection G Center of gravity P2, P3 Center of rotation

Claims (9)

The electronic device main body is rotated in contact with a device mounting rail having a pair of locking pieces, and the pair of locking pieces of the rail is attached to each of the pair of engaging means provided in the electronic device main body. Rail-mounted electronic equipment to be engaged and attached,
Having a center of rotation at a position different from the center of gravity of the electronic device body in the horizontal direction ,
A rail-mounted electronic device , wherein the locking piece and the engaging means are further engaged by a moment generated by a positional relationship between the center of gravity and the rotation center .   The rail-mounted electronic device according to claim 1, wherein the center of rotation is eccentric from a central portion of the electronic device main body in the horizontal direction. A rail groove into which a device mounting rail having a pair of locking pieces on the outside is inserted, and engaging means provided at both ends of the rail groove in the vertical direction; A rail-mounted electronic device that rotates the electronic device main body with the rail inserted, and engages each of the pair of locking pieces of the rail with the engaging means to be attached to the rail,
Having a center of rotation at a position different from the center of gravity of the electronic device body in the horizontal direction ,
A rail-mounted electronic device , wherein the locking piece and the engaging means are further engaged by a moment generated by a positional relationship between the center of gravity and the rotation center .   The rail-mounted electronic device according to claim 3, wherein the center of rotation is eccentric from a central portion in a horizontal direction of the electronic device main body.   5. The rail-mounted electronic device according to claim 3, wherein the center of gravity is located directly below an engaging means provided at an upper end of the rail groove portion.   The rail-mounted electronic device according to any one of claims 3 to 5, wherein the rail groove portion is provided with a holding portion that contacts the inner wall portion of the rail and holds the device main body.   7. The rail mounting type electronic device according to claim 6, wherein the holding portion holds an inner wall portion facing a locking piece portion that is not engaged with the engaging means among the rails inserted into the rail groove portion. machine. A rail-mounted electronic device according to any one of claims 1 to 7, further comprising a cut-out portion formed by cutting a portion projecting in a horizontal direction from the mounted state when the device main body is tilted by mounting and removing. machine. Of the locking piece portion of the rail, a portion that does not engage with the engaging portion and a fixed piece that contacts one end,
One end is integrated on the lower surface or upper surface of the device body, and the other end has an elastic support piece connected to the other end of the fixed piece,
The rail-mounted electronic device according to any one of claims 1 to 8, wherein the fixed piece is pulled into the electronic device main body by pushing the elastic support piece toward the electronic device main body.

Images