JP4520213B2 - Obstacle sensing structure for switchgear - Google Patents

Description

  The present invention relates to an obstacle detection structure in an opening / closing device, such as a shutter device including an overhead door, a door, a sliding door including a shutter, a sash window, a roll screen, a blind, a gate, a gate, and a sliding wall device, and is particularly applied as a shutter device. In particular, the present invention relates to an obstacle sensing structure for a switchgear.

  Conventionally, in this kind of obstacle detection structure for an opening / closing device, for example, as described in Patent Document 1, a light emitting portion (a light emitting portion protruding downward) at both ends of the opening / closing body width direction at the lower end portion of the opening / closing body. Emission unit) and light-receiving unit (capturing unit), detecting that the light beam (path) of the obstacle detection medium formed between the light-emitting unit and the light-receiving unit is blocked by the obstacle, and stopping the opening / closing body There is an invention to do so.

However, according to the above prior art, the light emitted from the light emitting part is emitted from the lower end surface of the opening / closing body (the lower end surface of the seat plate 8 according to Patent Document 1) or the contact target portion that is contacted by the opening / closing body. In some cases, the light is incident on the light receiving unit after being reflected on the floor surface 13 (according to Patent Document 1).
That is, when the light emitting unit and the light receiving unit are configured by a general photoelectric sensor that emits infrared rays, the infrared rays emitted from the light emitting unit toward the light receiving unit are linear between the light emitting unit and the light receiving unit. Although an optical path is formed, since it is emitted with a slight radial spread, it also forms a bent optical path that is emitted from the light emitting part and reflected on the lower end surface of the opening / closing body, the contact target part, etc. and incident on the light receiving part. There is a case.
When both a linear optical path and a bent optical path are formed as described above, even if an obstacle enters the linear optical path, infrared light is received through the bent optical path which is another optical path. Therefore, the control unit of the switchgear determines that there is no obstacle due to the incidence of infrared rays on the light receiving unit. Therefore, there is a possibility that the opening / closing body may come into contact with the obstacle without stopping.
JP-A-11-182161

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is for a switchgear that can prevent malfunction due to erroneous reflection of an obstacle detection medium and improve the certainty of obstacle detection. It is to provide an obstacle sensing structure.

In order to solve the above-mentioned problems, a first invention is provided with an opening / closing body operable at least in a closing direction, and detects an obstacle for an opening / closing device that detects an obstacle closer to the closing direction than the opening / closing body. In the structure, a non-contact sensing means and an erroneous reflection preventing means are provided at an end of the opening / closing body on the closing direction side, and the non-contact sensing means is closed from the end of the opening / closing body on the closing direction side. The discharge unit and the capture unit are provided so as to protrude in the direction, the obstacle detection medium is discharged from the discharge unit in the substantially opening / closing body width direction, and the obstacle entering the path of the obstacle detection medium is detected by the capture unit. The erroneous reflection preventing means is constituted by an end of the opening / closing body on the closing direction side and the opening / closing body to be closed so as to prevent the obstacle sensing medium from being captured by the capturing part due to erroneous reflection. Within the contact area to be contacted One or both of the sites, the obstacle sensing medium, characterized by comprising a reflective means for reflecting a direction other than the catching portion.
Here, the erroneous reflection prevention means is disposed at an end of the opening / closing body on the closing direction side or a part to be contacted by the opening / closing body, and an obstacle sensing medium is provided by the part. Any structure may be used as long as it is prevented from being erroneously reflected and captured by the capturing unit. For example, the obstacle sensing medium may be configured to reflect, absorb, transmit, block, or the like.
The erroneous reflection preventing means is preferably provided in a range including the vicinity of the center in the opening / closing body width direction, and more preferably provided over substantially the entire length in the opening / closing body width direction.

In the second invention, the erroneous reflection preventing means includes one or both of an end of the opening / closing body on the closing direction side and a contact target portion that is contacted by the opening / closing body to be closed. The part is inclined in the opening / closing body thickness direction so that there is substantially no surface substantially orthogonal to the opening / closing body opening / closing direction.

In the third invention, the erroneous reflection preventing means is characterized in that an end face in the closing direction of the opening / closing body is inclined so as to reflect the obstacle sensing medium in the thickness direction of the opening / closing body.

In the fourth aspect of the invention, the erroneous reflection preventing means is formed such that the end of the opening / closing body in the closing direction has a substantially concavo-convex shape including a plurality of inclined surfaces inclined in the opening / closing body thickness direction. It is characterized by.

According to a fifth aspect of the invention, the erroneous reflection preventing means protrudes in the closing direction of the opening / closing body into a substantially mountain-shaped cross section at the central portion in the opening / closing body thickness direction of the end of the opening / closing body on the closing direction side. In addition, the both ends of the opening / closing body thickness direction are inclined to project in the opening / closing body closing direction.

  As a particularly preferred specific example of this erroneous reflection preventing means, the cross section when the end of the opening / closing body on the closing direction side is cut by a virtual plane substantially orthogonal to the opening / closing body width direction is substantially inverted W-shaped. To form.

In the sixth invention, the erroneous reflection preventing means is provided at an end of the opening / closing body on the closing direction side, and moves the end in the opening / closing body opening direction by contact with the contact target portion. It is provided as follows.

Here, as a specific example of a configuration in which “the end is moved in the opening / closing body opening direction by contact with the contact target part”, the erroneous reflection preventing means swings by the contact with the target part. And an aspect in which the erroneous reflection preventing means slides in the opening / closing body opening direction by contact with the target part, and the erroneous reflection preventing means is in contact with the target part. Examples include a mode of deformation (including a case where the elastic deformation is not included, but preferably an elastic deformation).
The erroneous reflection preventing means in this invention is a case where the opening / closing body is closed only once and is not opened after the end on the opening / closing body closing direction side is moved in the opening / closing body opening direction by contact with the contact target portion. Although it is possible to adopt a mode that does not restore, it is preferable that the mode is restored when the opening / closing body is opened.

Further, in the seventh invention, the erroneous reflection preventing means is configured to move the end on the opening / closing body closing direction side in the opening / closing body opening direction by being folded by contact with the contact target portion. It is characterized by being.

In the eighth invention, the erroneous reflection preventing means includes one or both of an end of the opening / closing body on a closing direction side and a contact target portion that is contacted by the opening / closing body to be closed. The part is provided with a blocking member, and the blocking member intersects with the path so as to block the path of the obstacle sensing medium toward the one or both parts.

  Here, the blocking member may be a member that reflects the obstacle sensing medium, but is preferably a member that absorbs the obstacle sensing medium and does not reflect it as much as possible.

In the ninth invention, the erroneous reflection preventing means is provided with a recess opening in the closing body closing direction and extending in the opening / closing body width direction at the end of the opening / closing body in the closing direction side, and in the recess. The blocking member is provided.

In the tenth aspect of the present invention, in the obstacle detection structure for an opening / closing device, provided at least in an opening / closing body operable in the closing direction, and detecting an obstacle closer to the closing direction than the opening / closing body,
Non-contact sensing means and erroneous reflection preventing means are provided at the end of the opening / closing body on the closing direction side,
The non-contact sensing means includes a discharge part and a capture part so as to protrude from the end of the opening / closing body on the closing direction side to the opening / closing body closing direction, and discharges an obstacle sensing medium from the discharge part in the width direction of the opening / closing body. And an obstacle entering the path of the obstacle sensing medium is sensed by the capturing unit,
The erroneous reflection preventing means is brought into contact with the end of the opening / closing body on the closing direction side so as to prevent the obstacle sensing medium from being captured by the capturing part due to erroneous reflection. Obstacle sensing medium transmitting means for transmitting the obstacle sensing medium is provided in one or both of the contact target parts.

Further, in the eleventh invention, the erroneous antireflection means, the discharge portion, makes the release direction is supported so as inclined at a predetermined angle to said opening side, the predetermined angle, the emitting portion and the It is characterized in that it is set within a range in which a straight path of the obstacle detection medium can be secured between the capturing part and the capturing part.

  The opening / closing device to which the obstacle sensing structure for a switching device according to the present invention is applied may be any device provided with at least an opening / closing body operable in the closing direction and partitioning the space by the opening / closing body. The opening / closing device includes an aspect in which the opening / closing body is used to perform only a closing operation, an aspect in which the opening / closing body is used to perform both an opening operation and a closing operation, and the like.

  As a specific example of the opening and closing body, an aspect in which a plurality of slats and pipes are continuously provided in the opening and closing direction, an aspect in which a panel, a sheet-like object, and a net-like object are provided in a single or a plurality in the opening and closing direction, Or the aspect etc. which combine a slat, a panel, a pipe, a sheet-like thing, a net-like thing, etc. suitably are mentioned.

In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state.
Further, in this specification, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body opens / closes and is not a width direction or a thickness direction of the opening / closing body.
Further, in this specification, the “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body.

Since the present invention is configured as described above, the following effects can be obtained.
According to the first invention, after the obstacle sensing medium emitted from the emitting part is reflected on the end of the opening / closing body in the closing direction, the contact target part (floor surface, ground, frame member, etc.), etc. , It can be prevented from being captured by the capturing unit.
Therefore, when an obstacle exists in the closing direction side with respect to the opening / closing body, it is possible to prevent a situation in which the obstacle is not detected by the reflection.

In addition , even if the obstacle sensing medium released from the discharge part is slightly released radially, the end of the opening / closing body on the closing direction side and the contact target part (floor surface, ground, frame member, etc.) Is reflected in a direction other than the capturing part by one or both of the parts.
Therefore, with a simple structure, it is possible to prevent the obstacle sensing medium reflected by the end of the opening / closing body in the closing direction or the contact target part from being captured by the capturing unit.

Further, according to the second invention, the obstacle sensing medium emitted from the emission part is slightly emitted radially and reflected by the end of the opening / closing body in the closing direction and / or the contact target part. However, the end portion and / or the contact target portion does not have a surface substantially orthogonal to the opening / closing body opening / closing direction and is inclined in the opening / closing body thickness direction. It is possible to effectively reflect the obstacle sensing medium in a direction other than the capturing unit.
That is, for example, when there is a surface substantially orthogonal to the opening / closing body opening / closing direction at the end face in the closing direction of the opening / closing body, the obstacle sensing medium released from the emitting portion is reflected by the surface and captured by the capturing portion. However, according to the present invention, such reflection can be prevented.

Furthermore, according to the third invention, the obstacle detection medium reflected at the end of the opening / closing body in the closing direction advances in a direction intersecting the opening / closing body width direction by the inclined end surface.
Therefore, it is possible to effectively prevent the obstacle sensing medium reflected by the end portion in the closing direction of the opening / closing body from being captured by the capturing unit with a particularly simple structure.

Further, according to the fourth invention, since the erroneous reflection preventing means is constituted by the plurality of inclined surfaces arranged in a substantially uneven shape in the opening / closing body thickness direction, the inclination angle of each inclined surface is relatively large. This makes it possible to effectively reflect the obstacle sensing medium in a direction other than the supplementary part. In addition, the height of a member (for example, a seat plate member) at the end in the closing direction of the opening / closing body is increased by the inclined surface, and the design of the opening / closing body can be prevented from being impaired.

Furthermore, according to the fifth aspect, the obstacle sensing medium can be effectively reflected in a direction other than the capturing part by the minimum necessary number of inclined surfaces.

Further, according to the sixth invention, when the opening / closing body is fully closed, the erroneous reflection preventing means moves in the opening / closing body closing direction by contact with the contact target portion. For this reason, the misreflection preventing means is well accommodated and the appearance is improved.

Furthermore, according to the seventh invention, the structure in which the erroneous reflection preventing means is moved in the opening / closing body opening direction by contact with the contact target part can be a simple and highly productive folding structure.

Further, according to the eighth invention, it is assumed that the obstacle sensing medium released from the discharge portion is slightly released radially and is directed to the end portion on the closing direction side of the opening / closing body and / or the contact target portion. Is also blocked by the blocking member.
For this reason, the obstacle sensing medium released slightly in a radial manner as described above is prevented from being reflected by the closing part of the opening / closing body and / or the contact target part and being captured by the capturing part. be able to.

Furthermore, according to the ninth invention, since the blocking member is housed in the recess, it is possible to prevent the blocking member from getting in the way when the opening / closing body is fully closed. The appearance of the appearance when the body is fully closed is also good.

Furthermore, according to the tenth invention, the obstacle sensing medium emitted from the emitting part is erroneously reflected on the end of the opening / closing body in the closing direction and the contact target part (floor surface, ground, frame member, etc.). Can be prevented with a simple structure.

Further, according to the eleventh invention, the obstacle sensing medium, while ensuring the linear path between the emitting portion and the capture portion, being released slightly inclined to the closing side.
Therefore, it is possible to prevent the obstacle sensing medium released from the emitting part from being reflected by the contact target part (floor surface, ground, frame member, etc.) and captured by the capturing part with a simple structure. Can do.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The obstacle sensing structure for a switchgear according to the present embodiment is disposed in or on an opening or inside a building / structure such as a house, building, warehouse, factory, underground shopping street, tunnel, or vehicle loading platform, and opens and closes the opening. In addition, the present invention can be applied to a so-called shutter device that partitions or opens a space inside the housing, and can also be applied to a roll screen device that does not include a guide rail and other opening / closing devices. An example applied to a shutter device that partitions and opens a space by guiding the body in the opening / closing direction by a guide rail will be described.

  The opening / closing device A having the obstacle sensing structure includes an opening / closing body 10 that can be opened and closed, guide rails 20 and 20 that surround both ends of the opening / closing body 10 in the width direction, and guide the operation in the operation direction. And a non-contact sensing means 50 for sensing an obstacle entering the closing direction with respect to the opening / closing body 10 (see FIG. 1). .

  The opening / closing body 10 includes an opening / closing body main body 11 formed by connecting a plurality of so-called slats formed by bending a horizontally long substantially rectangular metal plate so that the slats are vertically adjacent to each other, and the opening / closing body main body 11. And a seat plate member 12 connected to the lower end of the open / close body in the width direction.

The seat plate member 12 is connected to the slat at the lowermost end of the opening / closing body main body 11, and is fixed to the opening / closing body main body 11. The fixing member 12a is opened / closed in the opening / closing body opening / closing direction (see FIG. According to the illustrated example, the contact sensing means 40 has a substantially inverted T-shaped cross section composed of a movable member 12b movable in the vertical direction) and senses the contact of an obstacle with the end of the movable member 12b on the closing direction side. (See FIGS. 2 and 3).
More specifically, the contact sensing unit 40 includes the seat plate member 12 and a proximity sensing unit 51 provided in the non-contact sensing unit 50 described later. The movable sensing unit 51 moves the movable member 12b upward. The operation is sensed (see FIG. 6).

The fixing member 12a is a substantially frame-shaped member having an open bottom surface, and has a curl portion connected to the slat at the lowermost end of the opening / closing body 11 at the outer upper end side (FIGS. 2 and 6). reference).
The fixing member 12a of the seat plate member 12 has a pivotal support portion 12a1 having a substantially concave cross section extending in the width direction of the opening / closing body on the lower end side of the opening / closing body thickness direction (right surface according to FIG. 6). Have.
A pivot member 12c is pivotally supported by the pivot portion 12a1 so that the peripheral end side is pivoted along the opening / closing body opening / closing direction.

  In addition, on each of the front and back surfaces (left and right surfaces in FIG. 6) of the fixing member 12a, projecting in the opening / closing body thickness direction on the end side in the opening / closing body width direction, the non-contact sensing means 50 described later. Engaged portions 12g and 12g (see FIGS. 2 to 3) that support the release side non-contact sensing unit 50a or the capture side non-contact sensing unit 50b in a free-hanging manner are formed. The engaged portions 12g and 12g may be configured by penetrating and fixing another member to the fixing member 12a as illustrated, or may be configured by partially cutting and raising the seat plate member 12. .

Further, the movable member 12b has a substantially inverted T-shaped cross section, and a substantially vertical portion thereof is formed in a substantially frame shape with an upper opening.
The movable member 12b has a pivotal support portion 12b1 extending in the width direction of the opening / closing body on the upper end side of one end surface (left side surface according to FIG. 6) in the opening / closing body thickness direction.
The pivot portion 12b1 is disposed so as to face the pivot portion 12a1 of the fixing member 12a, and pivotally supports the peripheral end side of the rotating member 12c that is pivotally supported by the fixing member 12a.

  Since the movable member 12b is formed by processing the above-described substantially vertical portion by drawing or extruding a metal material, a normal opening is formed on the end face in the opening / closing body width direction. In the present embodiment, the sensing portion protection means is configured by closing the opening with a closing plate 12e (see FIG. 9). This sensing unit protection means will be described in detail later.

The rotating member 12c is brought into contact with the inner surface of the fixing member 12a closer to the opening / closing body opening direction side (upper side in the illustrated example) than the portion pivotally supported by the pivotal support portion 12a1 of the fixing member 12a. It has integrally the rotation control part 12c1 which controls rotation of this rotation member 12c. The rotation restricting portion 12c1 is a portion that is sensed by the proximity sensing portion 51 of the capturing side non-contact sensing unit 50b described later.
Similarly, the rotating member 12c abuts the inner surface of the movable member 12b closer to the opening / closing body closing direction (lower side in the illustrated example) than the portion pivotally supported by the pivotal support portion 12b1 of the movable member 12b. Thus, a rotation restricting portion 12c2 (see FIG. 6) that restricts the rotation of the rotation member 12c is integrally provided.

According to the configuration of the seat plate member 12 and the contact sensing means 40, when an obstacle comes into contact with the movable member 12b from the lower side, the movable member 12b moves in the opening / closing body opening direction due to the contact, and accompanying this movement Thus, the rotating member 12c rotates (see FIG. 6).
Then, the rotation restricting portion 12c1 of the rotating member 12c approaches the proximity detecting portion 51 and is detected by the proximity detecting portion 51, and a control portion (not shown) stops or reverses the closing operation of the opening / closing body 10 by the detection signal. .

The position of the rotation restricting portion 12c1 that can be sensed by the proximity sensing portion 51 is not limited to the position where the rotation restricting portion 12c1 contacts the fixing member 12a (the position shown in FIG. 6B). Depending on the sensitivity (detectable distance) of the proximity sensing unit 51, the position where the rotation restricting part 12c1 is rotated by a predetermined angle, in other words, the position where the rotation restricting part 12c1 is separated from the fixing member 12a by a predetermined interval. Can do.
That is, if the detectable distance of the proximity sensing unit 51 is relatively long within the thickness dimension of the entire fixed member 12a, the movable member 12b slightly moves in the opening / closing body opening direction, and the rotation restricting unit is associated with the movement. 12c1 are also only slightly rotated, it is possible to sense the rotation and thus, it is possible to stop or reversing such a closing member 10 within the impact against obstacles or opening and closing member 10 or the like is small.

As a preferable means for increasing the detectable distance of the proximity sensing unit 51, the rotating member 12c is made of a non-magnetic material such as an aluminum alloy, and the proximity sensing unit 51 senses the proximity of the magnetic material. In such a case, a magnetic body (for example, a steel plate) may be mounted on at least a portion corresponding to the proximity detecting unit 51 on the contact surface of the rotation restricting unit 12c1 with the fixing member 12a.
Of course, the rotating member 12c itself can be made of a magnetic material such as iron, but from the viewpoint of improving the operability of the movable member 12b and the rotating member 12c by reducing the weight, the rotating member 12c itself is It is preferable to use a lightweight metal material such as an aluminum alloy, and it is also possible to use a synthetic resin material or the like as long as the material can avoid strength problems.

Moreover, the reflection means 12d is provided in the end surface (the substantially horizontal bottom face part in the example of illustration) in the opening-closing body closing direction side in the seat board member 12 mentioned above.
The reflecting means 12d constitutes an erroneous reflection preventing means for preventing an obstacle sensing medium emitted by the emitting portion 52 described later from being reflected by the bottom surface portion of the seat plate member 12 and captured by the capturing portion 53.
The reflecting means 12d is constituted by a reflecting plate that reflects the obstacle sensing medium in a direction other than the capturing part 53 of the non-contact sensing means 50. According to a preferred example of the present embodiment, the obstacle sensing medium is opened and closed. By bending the metal plate so as to be reflected in the body thickness direction, two inclined pieces 12d1 and 12d1 having substantially the same opening / closing body thickness direction are formed, and the opening / closing body width in the seat plate member 12 is formed. It is provided over substantially the entire length in the direction.

The reflecting means 12d has at least a surface on the opening / closing body closing direction side, specifically, a surface on the opening / closing body closing direction side of both inclined piece portions 12d1 and 12d1 so as to easily reflect the obstacle sensing medium.
When the reflecting means 12d is constituted by a reflecting plate inclined as described above, as a specific aspect of the surface processing, the surface of the reflecting means 12d on the opening / closing body closing direction side captures an obstacle sensing medium. A mode in which the surface roughness is small enough to be reflected or diffused in a direction other than the portion 53, and more preferably, the same surface is effective in a direction other than the capturing portion 53, such as a substantially mirror surface. The surface may be processed into a surface that is easily reflected or diffused.
Further, as another specific aspect of the reflecting means 12d, the surface of the reflecting means 12d on the opening / closing body closing direction side is substantially glossy so that at least the obstacle sensing medium can be reflected in a direction other than the capturing portion 53. A mode in which coating or painting is applied, and a mode in which a substantially mirror-like coating or painting is applied to the same surface is more preferable.

According to the reflecting means 12d, even if a part of the obstacle sensing medium emitted from the emitting unit 52 is reflected by the reflecting means 12d, the reflected obstacle sensing medium is in the open / close body width direction. Proceeding in the crossing direction, it is difficult to be captured by the capturing unit 53 (see FIG. 7).
Therefore, by detecting the obstacle sensing medium reflected by the capturing unit 53, it is possible to prevent erroneous sensing that the control unit (not shown) determines that there is no obstacle.
In addition, according to a preferred example of the present embodiment, the reflecting means 12d is composed of two integrally inclined piece portions 12d1 and 12d1 that can be elastically deformed. It also has the function of absorbing an impact when it comes into contact with the contact target site p.
According to a preferred example of the present embodiment, the reflecting means 12d is provided over substantially the entire length of the seat plate member 12 in the opening / closing body width direction, but a part of the obstacle sensing medium discharged from the discharge portion 52 is provided. May be disposed only in a part (preferably in the vicinity of the center) in the width direction of the opening / closing body.

Further, the guide rail 20 is formed in a substantially U-shaped cross section surrounding the end portion in the width direction of the opening / closing body 10 by processing such as drawing or extrusion forming of an aluminum alloy material, bending processing of a steel plate or other metal plate. It is a member made.
A guide piece 21 (see FIG. 5) for guiding a non-contact sensing means 50 described later in the opening / closing body opening / closing direction is fixed in the guide rail 20.
The guide piece 21 is continuously provided over the opening / closing body opening / closing direction of the guide rail 20 with the protruding end in the opening / closing body width direction facing the bottom portion 20a of the guide rail 20.

Further, an inspection portion 23 (see FIG. 1) that can be opened and closed is provided in the opening / closing body closing direction of the guide rail 20 so that the non-contact sensing means 50 can be inspected.
The inspection unit 23 is provided with an opening at a portion corresponding to the non-contact sensing means 50 in the guide rail 20 and the opening is closed by a lid member so that the opening / closing body 10 can be opened and closed according to the illustrated example. It is arranged on the lower end side of the guide rail 20 so that the non-contact sensing means 50 can be checked when it is closed.
In the figure, reference numeral 22 denotes a bracket for fixing the guide rail 20 to a housing or the like. For example, the bracket 22 is formed in a substantially frame shape in cross section and is fixed over substantially the entire length of the guide rail 20.

In addition, the winding device 30 includes a winding shaft 31 that can wind and unwind the opening / closing body 10, an opening / closing device 32 such as a motor that drives and rotates the winding shaft 31, and a control unit that controls the opening / closing device 32 ( includes a not shown) or the like, when the contact sensing means 40 or a non-contact sensing means 50 senses an obstacle, and are configured to be stopped or reversed, such as the closing operation of the opening and closing device 32 by the control unit.
The winding device 30 may have a mode in which the opening / closing body 10 is electrically opened and closed, or a mode in which the opening / closing body 10 is opened electrically and the opening / closing body 10 is closed by its own weight. It may be.

  The non-contact sensing means 50 includes a discharge-side non-contact sensing unit 50a disposed on one end side in the opening / closing body width direction and a capture-side non-contact sensing unit 50b disposed on the other end side in the opening / closing body width direction. The obstacle-side sensing medium released from the emission-side non-contact sensing unit 50a is captured by the capture-side non-contact sensing unit 50b, so that the space between the emission-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b is obtained. The path s of the obstacle sensing medium is formed.

  The discharge-side non-contact sensing unit 50a slides at a predetermined interval in the opening / closing body opening / closing direction with respect to the opening / closing body 10 and engages with the guide rail 20 so as to be guided by the guide rail 20 in the opening / closing body opening / closing direction; And a discharge portion 52 that discharges the obstacle sensing medium substantially in the width direction of the opening / closing body and a weight adjustment member 55 that can be attached and detached, and an end portion on the closing direction side of the opening / closing body 10, specifically, the seat plate member 12. It is arrange | positioned so that it may protrude in the opening-closing body closing direction (downward in the example of illustration) from the edge part of this width direction.

According to the illustrated example, the unit main body 54 has a substantially rectangular parallelepiped frame shape that is long in the vertical direction, and has an opening 54 a having a substantially trumpet cross section through which an end of the opening / closing body 10 in the width direction is guided from above. In addition, an opening 54b is provided on one end face in the width direction of the opening / closing body to house an end in the width direction of the opening / closing body 10 (specifically, an end in the width direction of the opening / closing body main body 11 and the seat plate member 12). (See FIGS. 3 and 4).
Further, on the outer side surfaces of the side wall portions 54c, 54c arranged in the opening / closing body thickness direction of the unit main body 54, an engaging portion 54d that engages with the guide piece 21 of the guide rail 20 is integrally projected. is doing.
Further, an engagement groove 54e is formed on the inner surface of each side wall 54c so as to be slidably engaged with the engaged portion 12g of the seat plate member 12.
And this unit main body 54 is made into the left-right symmetrical shape in the opening-and-closing body thickness direction so that both the discharge | release side non-contact sensing unit 50a and the capture | acquisition non-contact sensing unit 50b can be comprised.
The material of the unit main body 54 is not particularly limited. However, the unit main body 54 can reduce the frictional resistance of the guide rail 20 with respect to the guide piece 21 and can smoothly slide downward without being caught. From the viewpoint of improving the free sag when engaged with the engaged portions 12g and 12g of the seat plate member 12, it is preferable to use a high-density synthetic resin material (for example, POM).

In the engaging portion 54d, a vertical groove 54d1 is formed in a portion protruding in the opening / closing body thickness direction from the outer surface of each side wall portion 54c so as to fit loosely into the guide piece 21 of the guide rail 20. Yes.
The width of the groove 54d1 is set to be larger than the thickness of the guide piece 21 so that the unit main body 54 is slightly movable in the opening / closing body thickness direction.

Further, the engaging groove 54e is formed on the inner surface of each side wall portion 54c so as to extend in a long concave shape from the upper end side to the lower end side, and to be engaged with the engaged portion 12g by the step portion at the inner upper end. It is.
The engaging grooves 54e and 54e are dimensioned so that the unit main body 54 slightly moves in the opening / closing body width direction and the opening / closing body thickness direction while being engaged with the engaged portions 12g and 12g. .

The dimension y (see FIG. 9) from the upper end of each engagement groove 54e to the lower end of the unit main body 54 is such that the amount of protrusion downward of the discharge portion 52 or the capture portion 53 attached to the lower end side of the unit main body 54 is determined. The opening / closing body 10 is set to be appropriate according to the closing speed of the opening / closing body 10 and the like.
That is, when an obstacle is normally sensed in a non-contact manner by the non-contact sensing means 50, a slight time lag (response) occurs from the sensing until the opening / closing body 10 stops or reverses. This time lag tends to increase as the closing speed of the opening / closing body 10 increases.
Therefore, when the closing speed of the opening / closing body 10 is relatively high, the dimension y is set to be large so that the opening / closing body 10 does not come into contact with an obstacle before it stops or reverses. When the closing speed of the opening / closing body 10 is relatively low, it is preferable to set the dimension y to be small.
In the contact sensing means 40 described above, as in the non-contact sensing means 50, a seat plate member is considered in consideration of a time lag from when the movable member 12b comes into contact with an obstacle until the opening / closing body 10 stops or reverses. The vertical sliding widths of the twelve movable members 12 b are appropriately set according to the closing speed of the opening / closing body 10.

The discharge-side non-contact sensing unit 50a is configured by mounting the discharge part 52 and the weight adjusting member 55 on the non-contact sensing means 50 having the above-described configuration, and according to the illustrated example, one end side in the opening / closing body width direction. And the other end side, the side not provided with the opening / closing device 32 (left end side according to FIG. 1) is supported so as to slide in the vertical direction (predetermined dimension y).
The supporting structure will be described in detail. In the discharge-side non-contact sensing unit 50a, both the engaging grooves 54e and 54e of the unit main body 54 are loosely fitted into the substantially engaged portions 12g and 12g of the seat plate member 12. The one groove 54d1 of the unit main body 54 is fitted into the guide piece 21 of the guide rail 20 so as to be loosely fitted, and the bottom wall portion 54f (see FIG. 5) of the unit main body 54 is fitted to the bottom surface 20a of the guide rail 20. Supported in close proximity.
Therefore, the discharge-side non-contact sensing unit 50a is supported in a free-hanging manner so that the lower end side thereof can be slightly swung in the opening / closing body width direction.
Therefore, even if the guide rail 20 is slightly inclined in the opening / closing body width direction, it is difficult to be adversely affected by the inclination, and the path s of the obstacle sensing medium between the discharge unit 52 and the capturing unit 53 is maintained. become.

On the other hand, the capturing-side non-contact sensing unit 50b is configured by mounting the capturing unit 53, the weight adjusting member 55, the electrical wiring guide protecting member 56, and the proximity sensing unit 51 on the non-contact sensing means 50 configured as described above. According to the example shown in the figure, one end side and the other end side in the opening / closing body width direction slide to the side (in the example shown, the right end side) provided with the opening / closing device 32 in the vertical direction (predetermined dimension y). To be supported.
The support structure is substantially the same as the discharge-side non-contact sensing unit 50a, and the capture-side non-contact sensing unit 50b is supported in a free-hanging manner so that its lower end can be slightly swung in the opening / closing body width direction. Is done.

  According to the illustrated example, the engagement portion between the engaged portions 12g, 12g of the seat plate member 12 and the engagement groove 54e of the unit main body 54 is an opening portion from the center of the unit main body 54 in the opening / closing body width direction. Although it is close to the side 54b, the engaging portion is moved toward the center of the unit body 54 in the width direction of the opening / closing body so that the unit body 54 hangs down substantially vertically, or the weight adjusting member 55 is moved to the opening 54b. The dimensions are set so that the position of the center of gravity is appropriate as required, such as moving to the side.

  The discharge unit 52 and the capture unit 53 are configured to capture the obstacle sensing medium that is released from the release unit 52 in the opening / closing body width direction by the capture unit 53. According to a preferred example of the present embodiment, the obstacle detection is performed. A so-called photoelectric sensor that emits infrared rays as a medium from the emitting unit 52 and receives light by the capturing unit 53 is used.

The discharge part 52 is supported with its discharge direction inclined at a predetermined angle toward the opening / closing body 10 side. This predetermined angle is set within a range in which a straight path s of the obstacle sensing medium can be secured between the discharge unit 52 and the capturing unit 53. More specifically, the emission direction of the emission part 52 is inclined toward the opening / closing body 10 within the allowable angle range in the specifications of the emission part 52 and the capture part 53 as photoelectric sensors.
Therefore, a part of the obstacle sensing medium (infrared rays) emitted from the emitting part 52 in a slightly radial shape is received by the capturing part 53 through the linear path s, and the other part is opened and closed. Will be released to the side (see FIG. 8). However, this other part of the obstacle sensing medium (infrared rays) is reflected in the direction other than the capturing unit 53 by the reflection means 12d described above, and thus does not have an adverse effect.

  The electrical wiring of the discharge portion 52 passes through the space in the seat plate member 12 and enters the guide rail 20 on the switch 32 side (right side in the illustrated example), together with the electrical wiring of the capturing portion 53. It rises in the guide rail 20 and is connected to a control unit (not shown) on the switch 32 side. In addition, although this electric wiring can also be set as the structure which stands up the guide rail 20 on the opposite side to the switch 32 (left side in the example of illustration), and is connected to the said control part, in this Embodiment. By consolidating the electrical wiring on the guide rail 20 on the switch 32 side, the wiring connection work of the electrical wiring, the maintainability of the electrical wiring, etc. are improved.

Further, each of the discharge part 52 and the capture part 53 is disposed at a predetermined distance from the lower end of the unit body 54 in the closing direction of the opening / closing body, and is separated by a predetermined distance, and the discharge-side non-contact sensing unit 50a and the capture-side non-contact. When the sensing unit 50b slides relative to the opening / closing body 10 in the opening / closing body closing direction, the sensing unit 50b is disposed at a position facing and close to the closing plate 12e of the seat plate member 12 (FIG. 9), and a sensing unit protection means for preventing foreign matter such as dust and dirt from adhering to the discharge unit 52 and the capturing unit 53.
That is, when the opening / closing body 10 is closed, the discharge unit 52 and the capture unit 53 are disposed above the contact target site p, and thus are not easily affected by foreign matter accumulated in the contact target site p.
Furthermore, the discharge part 52 and the capture part 53 slide in the opening / closing body closing direction together with the unit main body 54 in accordance with the operation of the opening / closing body 10 immediately before closing, and face each other close to the closing plate 12e of the seat plate member 12. For this reason, it is difficult for foreign matters such as dust and dust to adhere thereto.
In addition, when the opening / closing body 10 is in the closed state, the closing plate 12e of the seat plate member 12 is brought close to the discharging portion 52 and the capturing portion 53, so that the discharging portion 52 and the capturing portion 53 are maintained. Freezing (in a state where water adhering to the lens surface of the discharge part 52 and the capture part 53 is frozen), freezing of the discharge part 52 and the capture part 53 and the contact target site p, and the like can be prevented.
As a further preferred aspect of the sensing unit protection means, a wiping member 12f is disposed on the surface of the closing plate 12e (see FIG. 9).
The wiping member 12f is composed of, for example, a brush or the like, and slides the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b so that the tip thereof slides on the discharge unit 52 or the capture unit 53. Thus, dust and dirt adhering to the discharge part 52 and the capture part 53, and foreign matter including dew condensation water and a cloudy film are wiped off, and further, freezing of the discharge part 52 and the capture part 53 is prevented more effectively. .

Further, the weight adjusting member 55 is made of a metal material, and is disposed below the upper end of the engaging groove 54e in the unit main body 54, so that the free hanging property of the unit main body 54 is improved.
The weight adjusting member 55 is attached by detachable fastening means such as screwing or fitting so that the weight adjusting member 55 can be replaced with a different one if necessary.
That is, for example, in order to improve the free sag of the discharge-side non-contact sensing unit 50a or the capture-side non-contact sensing unit 50b, the weight adjusting member 55 is replaced with a relatively heavy one. Further, in order to improve the vertical slidability of the discharge-side non-contact sensing unit 50a or the capture-side non-contact sensing unit 50b, the weight adjusting member 55 is replaced with one having a relatively small weight.

According to a preferred example of the present embodiment, the weight adjusting member 55 is formed in a shape that can be fastened to one end side of the electrical wiring guide protecting member 56, and the weight adjusting member 55 on the capturing side non-contact sensing unit 50b side. The electric wiring guide protection member 56 is fixed to the front.
The electrical wiring guide protection member 56 covers and protects the electrical wiring (a part or all of signal lines, power supply lines, etc.) to the emission part 52, the capture part 53, the proximity sensing part 51, etc., and flexibly deforms This is a well-known member that freely guides the existing electric wiring in the opening / closing body opening / closing direction, one end side of which is fixed to the unit main body 54 and the other end side within the guide rail 20 is the opening / closing body 10. It arrange | positions so that it may deform | transform according to opening / closing operation | movement of.
The material of the electrical wiring guide protection member 56 is not particularly limited, but is preferably made of synthetic resin from the viewpoint of reducing noise during deformation, contact noise with the guide rail, and the like. From the viewpoint of smoothly sliding the unit main body 54 downward without causing a catch or the like, or from the viewpoint of improving the free sag of the unit main body 54, a relatively heavy material such as metal is used. preferable.

Further, the proximity sensing unit 51 is a proximity sensor that senses the proximity of the magnetic material, and the proximity sensing unit 51 is connected to the unit body 54 so as to sense the rotation restricting part 12c1 of the seat plate member 12 disposed in the unit body 54. The contact sensing means 40 which is fixed and acts in cooperation with the seat plate member 12 described above is constituted.
According to a preferred example of the present embodiment, the proximity sensing unit 51 is provided at only one capturing-side non-contact sensing unit 50b, so that the cost is low. However, both emission-side non-contact sensing units 50a are provided. It is also possible to provide the acquisition side non-contact sensing unit 50b.

The control unit (not shown) on the side of the switch 32 includes a means for invalidating the detection by the discharge unit 52 and the capture unit 53 when the switch body 10 is in the closed position.
The means for detecting the closed position of the opening / closing body 10 includes a contact type sensing switch such as a limit switch, a non-contact type sensing switch such as a proximity switch, a pulse counter, and the like.
According to this configuration, when the opening / closing body 10 is closed, the sensing by the discharge unit 52 and the capture unit 53 is invalidated, and thus the seat plate member 12 is positioned between the discharge unit 52 and the capture unit 53, The seat plate member 12 is not perceived as an obstacle.

Further, the control unit (not shown) on the side of the opening / closing machine 32 causes the opening / closing body 10 to bend in the opening / closing body thickness direction due to the contact of the obstacle from the opening / closing body thickness direction. When the path s of the medium is inclined in the opening / closing body thickness direction, and the obstacle sensing medium is not captured by the capturing unit 53 due to this inclination, the medium is recognized as an obstacle detection and the operation of the opening / closing body 10 is stopped or An electric circuit for inverting and the like (preferably an electric circuit for stopping) is provided.
Note that the configuration in which the path s of the obstacle sensing medium is inclined as described above is based on an appropriate loose fit between the capture-side non-contact sensing unit 50b and the seat plate member 12.
In other words, if the capturing-side non-contact sensing unit 50b and the seat plate member 12 are configured to fit with almost no gap, even if the opening / closing body 10 is slightly bent in the thickness direction due to the influence of wind, for example, Although the path s of the object sensing medium is inclined, in the present embodiment, by fitting the capturing portion 53 and the seat plate member 12 in an appropriate loose fit, the opening / closing body 10 is slightly affected by the influence of wind or the like. The path s of the obstacle sensing medium is tilted when the opening / closing body 10 bends relatively large due to the contact of the obstacle from the thickness direction of the opening / closing body without tilting the path s of the obstacle sensing medium due to the bending. ing.

According to the non-contact sensing means 50 configured as described above, during the closing operation of the opening / closing body 10, each of the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b is closer to the closing direction than the seat plate member 12. In the projecting state, the guide piece 21 is guided in the guide rail 20 and moves integrally with the opening / closing body 10 in the opening / closing body closing direction (see FIG. 9).
During the closing operation of the opening / closing body 10, an obstacle enters the path s of the obstacle sensing medium, an obstacle contacts the seat plate member 12, or the seat plate member 12 from the opening / closing body thickness direction side. When the obstacle is equal or contact, opening and closing member 10 that stops or inverted like the closing operation.

Each of the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b moves in the opening / closing body opening direction relative to the opening / closing body 10 when contacting the contact target portion p.
Then, the lower end of the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b and the lower end of the seat plate member 12 are substantially flush with each other by the contact with the contact target site p. The closing operation of the body 10 stops.

When the opening / closing body 10 is opened from the closed state, each of the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b is closed relative to the opening / closing body 10 by its own weight. Slide in the direction.
Therefore, each of the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b is again protruded downward from the opening / closing body 10 to be able to sense an obstacle.

  The switchgear A shows a particularly preferable mode in which an example of the obstacle sensing structure for switchgear according to the present invention is applied. However, the configuration of each part described above can be replaced or used together with other configurations. This will be described in detail below.

The contact sensing means 40 is not limited to the configuration of the opening / closing device A as long as it is disposed at the end of the opening / closing body 10 on the closing direction side and senses the contact of an obstacle with the end. Preferably, as in the opening / closing device A, a movable member 12b operable by contact with an obstacle is provided at an end of the opening / closing body 10 on the closing direction side, and the operation by the movable member 12b is performed by the proximity sensing unit 51. It is configured to detect non-contact.
In the contact sensing means 40, according to the opening / closing device A, the proximity sensing unit 51 senses the rotating member 12c operated by the movable member 12b, but directly senses the movable member 12b. Alternatively, other members operated by the movable member 12b may be sensed.
Further, according to the opening / closing device A, the contact sensing means 40 is a seat plate member that extends over substantially the entire length in the opening / closing body width direction so that an obstacle can be detected at any part in the width direction of the opening / closing body 10. However, as another aspect, at the end of the opening / closing body 10 on the closing direction side, one or more movable members are partially arranged in the width direction of the opening / closing body, and the operation of the movable member is performed. It may be perceived.
Further, according to the opening / closing device A, the contact sensing means 40 has a preferred mode in which the rotation restricting portion 12c1 is non-contact sensed by the proximity sensing portion 51 such as a proximity switch. A contact-type sensing switch (for example, a limit switch, a micro switch, a pressure-sensitive switch, a reed switch, or the like) is configured to sense contact, or a movable part other than the rotation restricting portion 12c1 is a contactless sensing switch such as a proximity switch It is also possible to have a structure for sensing by a contact type sensing switch.

Further, the non-contact sensing means 50 includes a discharge part 52 and a capture part 53 so as to protrude from the end of the opening / closing body 10 on the closing direction side in the opening / closing body closing direction. As long as the obstacle entering the path s of the obstacle sensing medium to be released is detected by the capturing unit 53, the configuration is not limited to the above-described opening / closing device A.
That is, according to the opening / closing device A, the non-contact sensing means 50 has the discharge portion 52 disposed on one end side in the opening / closing body width direction and the capture portion 53 disposed on the other end side. Although the path s of the obstacle sensing medium is formed between the parts 53, as another aspect, both the discharge part 52 and the capturing part 53 are arranged on one end side in the opening / closing body width direction, and the other end A reflection member (for example, a so-called reflector) that reflects the obstacle sensing medium emitted from the emission unit 52 toward the capture unit 53 is disposed on the side, and between the emission unit 52 and the capture unit 53 and the reflection member. In addition, a reciprocating path of the obstacle sensing medium may be formed.

  Further, according to the opening / closing device A, the emission unit 52 and the capture unit 53 are configured by photoelectric sensors using infrared rays as an obstacle sensing medium. However, as another aspect, microwaves may be used as the obstacle sensing medium. It is also possible to adopt a mode using laser light, ultrasonic waves, millimeter waves, or the like. In particular, when configured by a radar device using ultrasonic waves or millimeter waves, only the emitting part 52 and the capturing part 53 are arranged on one end side in the opening / closing body width direction (a structure without a reflector). it can.

The means for supporting the non-contact sensing means 50 in a free hanging manner is not limited to the configuration of the opening / closing device A. For example, the discharge-side non-contact sensing unit 50a and the capture-side non-contact sensing unit 50b It is also possible to adopt a configuration in which each of these is suspended from the lower end of the opening / closing body 10 by a flexible string-like body (for example, a string, a wire, a chain, or the like).
This means shows a mode in which the non-contact sensing means 50 can be slightly swung in the width direction of the opening / closing body according to the opening / closing device A, but this means includes the non-contact sensing means 50 as the opening / closing body. The aspect etc. which enabled rocking | fluctuation in one direction or both directions of the width direction and the opening-and-closing body thickness direction are included.

Further, although the inspection unit 23 is provided on the lower end side of the guide rail 20 according to the opening / closing device A, the guide rail so as to enable the inspection of the non-contact sensing means 50 at the position where the opening / closing body 10 is opened. 20 may be disposed on the upper end side of the guide rail 20 and may be provided from the upper end side to the lower end side of the guide rail 20.
Further, the inspection portion 23 is not configured by the opening and the lid member as described above, but the guide rail 20 is divided or combined in the length direction so that the length of the guide rail 20 in the length direction is reduced. It is good also as a structure by which one part is attached or detached.
Further, the inspection unit 23 may be configured to be opened and closed by a lid member that slides and rotates.

  The reflecting means 12d is not limited to the illustrated example as long as it reflects the obstacle sensing medium in a direction other than the capturing unit 53. For example, the surface of the seat plate member 12 in the opening / closing body closing direction is not limited. It is good also as the aspect formed in uneven | corrugated form, such as the aspect formed in the inclined shape with the single board, the shape which has the waveform, the rib, and the groove | channel. Further, the reflecting means 12d may be configured integrally with the seat plate member 12 by forming the lower surface of the seat plate member 12 itself into the shape described above.

Further, the erroneous reflection preventing means detects an obstacle by one or both of the end of the opening / closing body 10 in the closing direction and the contact target portion p that is contacted by the opening / closing body 10 to be closed. Any configuration that prevents the medium from being reflected and captured by the capturing unit 53 is not limited to the configuration of the opening / closing device A.
That is, the erroneous reflection prevention means is configured by the configuration in which the reflection means 12d and the emission part 52 are inclined according to the opening / closing device A. For example, from the obstacle detection medium transmission means that transmits the obstacle detection medium. It is also possible to adopt an aspect comprising an obstacle sensing medium absorbing means for absorbing an obstacle sensing medium.
As a specific example of the obstacle sensing medium transmitting means, a through hole such as one or a plurality of slit holes or other shaped holes is formed on the end face of the seat plate member 12 on the opening / closing body closing direction side, What is necessary is just to comprise so that an obstruction sensing medium may be permeate | transmitted to this end surface by forming an end surface with a light transmissive material.
In addition, as a specific example of the obstacle sensing medium absorbing means, for example, the end face of the seat plate member 12 on the opening / closing body closing direction side is black so that the obstacle sensing medium is absorbed to the extent that the obstacle sensing medium is not reflected to the capturing unit 53. Or the like, or a member such as black, or a rubber material may be attached. Particularly, according to the aspect where the rubber material is attached, the impact when the opening / closing body 10 is closed. It can have an absorption effect.
In the case where the erroneous reflection preventing means is constituted by the obstacle sensing medium transmitting means or the obstacle sensing medium absorbing means, the inclined surface of the lower end of the opening / closing body 10 as in the above-described embodiment (specifically, both inclined pieces) The parts 12d1, 12d1) can be omitted, and the part cost can be reduced to improve productivity.

Further, the erroneous reflection preventing means is an appropriate combination of the reflecting means 12d, the means in which the emission part 52 is inclined as described above, the obstacle sensing medium transmitting means, the obstacle sensing medium absorbing means, and the like. It is also possible to adopt an embodiment.
The part where the reflecting means 12d, the obstacle sensing medium transmitting means, the obstacle sensing medium absorbing means, and the like are disposed is not limited to the end of the opening / closing body 10 in the closing direction. Any one or both of the end portion in the closing direction of the body 10 and the contact target portion p that is contacted by the opening / closing body 10 may be used.

In addition, the sensing unit protection means is a part of the non-contact sensing means 50 when the opening / closing body 10 is in the closed state and the part that releases, captures, or reflects the obstacle sensing medium, As long as it is configured to prevent foreign matter such as dust, condensed water, and cloudy film from adhering thereto, it is not limited to the configuration of the opening / closing device A.
For example, both the emission part 52 and the capture part 53 are arranged on one end side in the opening / closing body width direction, and a reflection member (for example, a so-called reflector) that reflects an obstacle sensing medium toward the capture part 53 on the other end side. When the non-contact sensing means is configured by disposing, the structure may be such that foreign matter is prevented from adhering to the emitting part 52 and the capturing part 53, and the reflection is also possible. It is good also as a structure which prevented that a foreign material adheres with respect to a member.
In addition, according to the opening / closing device A, the closing plate 12e at the end in the width direction of the opening / closing body 10 is brought close to the parts such as the discharge portion 52 and the capturing portion 53. In order to prevent this, a part such as the discharge part 52 and the capture part 53 may be covered with an end part in the width direction of the opening / closing body 10 (specifically, an end part in the width direction of the seat plate member 12).

  Further, in the case where the sensing unit protection means is configured to include the wiping member 12f, the wiping member 12f is a part of the contact sensing means 50 and emits, captures, or reflects an obstacle sensing medium. Cleaning foreign matter (including dust, dust, condensed water, cloudy film, etc.) adhering to the site, specifically the emission surface of the emission part 52, the acquisition surface of the acquisition part 53, the reflection surface of the reflector, etc. As long as it is possible, specific examples include brushes, cloths, natural or synthetic skins, and the like.

  Further, the sensing transmission means for transmitting a sensing command when an obstacle is sensed by one or both of the contact sensing means 40 and the non-contact sensing means 50 to the control unit of the switchgear A is a wired type as in the present embodiment. It may be a wireless system.

  Next, a switchgear to which another example of the obstacle sensing structure for a switchgear according to the present invention is applied will be described. In addition, in the switchgear described below, portions that are substantially the same as those of the switchgear A described above are denoted by the same reference numerals as those of the switchgear A, and a detailed description thereof is omitted.

  The switchgear B, the main part of which is shown in FIG. 10, constitutes a reflection means 13d having a mode different from that of the switchgear A by replacing the seat plate member 12 in the switchgear A described above with a seat plate member 13. is doing.

The seat plate member 13 is connected to the slat at the lowermost end portion of the opening / closing body main body 11, and is fixed to the opening / closing body main body 11. The fixing member 13a is opened and closed in the opening / closing body opening / closing direction (see FIG. According to the illustrated example, it has a substantially inverted T-shaped cross section composed of a movable member 13b movable in the vertical direction. And this seat board member 13 comprises the contact detection means which carries out contact detection of the obstruction of the closing direction side rather than the opening / closing body 10 (refer FIG. 10 and 11).
The contact sensing means includes the seat plate member 13 and the proximity sensing unit 51 provided in the non-contact sensing means 50 in the same manner as the contact sensing means 40 of the opening / closing device A. The proximity sensing unit 51 senses that the movable member 13b has moved upward due to the contact.

The fixing member 13 a is a member having a substantially frame shape with an opening on the lower surface side, and the outer upper end side thereof is connected to the slat at the lowermost end of the opening / closing body main body 11.
And inside this fixing member 13a, the rotation member 13c is pivotally supported over the opening-and-closing body width direction.
Further, on the front and back surfaces of the fixing member 13a, engaged portions 13g and 13g are provided in substantially the same manner as the engaged portions 12g and 12g of the opening / closing device A, and the engaged portions 13g and 13g are The discharge-side non-contact sensing unit 50a (or the capture-side non-contact sensing unit 50b) is supported in a free-hanging manner.

The movable member 13b has a substantially inverted T-shaped cross section, and is engaged with the fixed member 13a so as to slide in the opening / closing body opening / closing direction.
When the movable member 13b slides relative to the fixed member 13a in the opening / closing body opening direction, the upper end portion of the movable member 13b is brought into contact with the swinging end portion of the rotating member 13c, The rotating member 13c is rotated.

  The rotating member 13c is sensed by the proximity sensing unit 51 (see FIG. 11) of the non-contact sensing means 50 when the swinging end side is pivoted in the opening / closing body opening direction by being pushed by the movable member 13b. It is arranged like this. A magnetic body such as a steel plate is fixed to the swinging end side of the rotating member 13c as necessary so as to improve the sensing performance of the proximity sensing unit 51.

In addition, the seat plate member 13 is provided with reflection means 13d at the end of the opening / closing body closing direction side so that the obstacle sensing medium emitted from the emission unit 52 is reflected and captured by the capture unit 53. This constitutes a means for preventing erroneous reflections.
The reflecting means 13d is formed by forming the end of the fixing member 13a in the closing direction of the opening / closing body in a substantially inverted W-shaped cross section, and fixing the reflecting plate 14 following this end.

The reflector 14 is formed by arranging an inclined surface inclined in the opening / closing body thickness direction in a substantially uneven shape in the opening / closing body thickness direction, and more specifically, the central portion in the opening / closing body thickness direction is substantially in cross-section. It is made up of a plurality of inclined surfaces 14a, 14b, 14c, and 14d by projecting in a mountain shape in the opening / closing body closing direction and by projecting the portions on both ends in the opening / closing body thickness direction in an inclined manner in the opening / closing body closing direction. The cross section is formed in a substantially inverted W shape.
The material of the reflecting plate 14 may be any material as long as it can reflect the obstacle sensing medium. It is considered as a board material etc. which applied a property paint.

  In addition, according to a preferable example of the illustrated example, the closing direction end of the seat plate member 13d is formed in an inverted W-shaped cross section, and the reflecting plate 14 having an inverted W-shaped cross section is overlapped and fixed to the end. Thus, while improving the reflectivity to the obstacle sensing medium and improving the design when the opening / closing body 10 is opened, in order to make the structure simpler, the reflector 14 is omitted, A surface treatment capable of reflecting the obstacle sensing medium may be applied to the lower end portion of the movable member 13b, and the obstacle sensing medium may be directly reflected by the lower end portion itself.

  According to the above configuration, the obstacle sensing medium emitted from the emitting portion 52 is slightly emitted radially and reflected by the end portion (more specifically, the reflecting plate 14) of the seat plate member 13 in the closing direction. Even if it is done, the end portion has no surface substantially orthogonal to the opening / closing body opening / closing direction, and the end portion has a plurality of inclined surfaces 14a, 14b, 14c, 14d having a relatively small inclination angle, The obstacle sensing medium is effectively reflected in a direction other than the capturing unit 53 by these inclined surfaces.

In the opening / closing device B, the configuration of the reflecting means 13d is such that the end in the closing direction of the opening / closing body 10 is inclined in the opening / closing body thickness direction so that there is substantially no surface substantially perpendicular to the opening / closing body opening / closing direction. If it is a thing, it will not be limited to FIG.10 and FIG.11, For example, it can be set as the aspect shown in FIG.
In the embodiment shown in FIG. 12, a large number of inclined surfaces 13e that incline in the opening / closing body thickness direction are formed on the end of the movable member 13b of the seat plate member 13 in the opening / closing body closing direction. The effect of reflecting the obstacle sensing medium in a direction other than the capturing unit 53 is improved by increasing the inclination angle of each inclined surface 15.
According to the illustration of FIG. 12, a large number of inclined surfaces 13 e are formed integrally with the seat plate member 13, but the reflector is fixed to the lower end of the seat plate member 13 as in the case of FIG. 11. You may do it.

Further, the opening / closing device C, the main part of which is shown in FIG. 13, has a configuration in which the reflecting means 12d in the above-described opening / closing device A is replaced with the reflecting means 14d.
The reflection means 14d is configured to move the end of the seat plate member 12 in the opening / closing body closing direction in the opening / closing body opening direction by contact with the contact target portion.
More specifically, the reflecting means 14d includes two reflecting oscillating pieces 14d1 and 14d2. Each reflecting oscillating piece 14d1 (or 14d2) has a predetermined angle at one end side in the opening / closing body thickness direction. The other end is pivotally supported by the movable member 12b so as to be swingable.
And these reflection rocking | fluctuation piece 14d1, 14d2 protrudes in a cross-sectional substantially mountain shape in the opening-closing body closing direction in the state which accumulated the rocking | fluctuation end side.

According to this opening / closing device C, when the opening / closing body 10 is fully closed, the two inclined reflection rocking pieces 14d1, 14d2 are folded so as to overlap each other when they come into contact with the contact target portion. Therefore, the fitting of the reflection means 14d when the opening / closing body 10 is fully closed is good.
Further, the two reflection oscillating pieces 14d1, 14d2 project in the opening / closing body closing direction by their own weight when the fully closed opening / closing body 10 is opened.
In addition, this aspect can also be replaced with a configuration (not shown) in which the two reflecting means 14d1 and 14d2 are slid in the opening / closing body opening direction by contact with the contact target portion.

  Further, the opening / closing device D, the main part of which is shown in FIGS. 14 and 15 (a), is released from the discharge portion 52 by replacing the movable member 12b of the seat plate member 12 in the opening / closing device A described above with the movable member 15b. Thus, an erroneous reflection preventing means for preventing the obstacle sensing medium to be reflected and captured by the capturing unit 53 is configured.

The movable member 15b is provided with a recess 15b1 that opens in the opening / closing body closing direction and extends in the opening / closing body width direction at an end of the opening / closing body closing direction side, and a blocking member 15b2 is fixed in the recess 15b1. .
The blocking member 15b2 is arranged so as to cross the path so as to block the path of the obstacle sensing medium that goes into the recess 15b1. The position of the blocking member 15b2 is preferably the central side of the movable member 15b in the opening / closing body width direction.
Further, the number of the blocking members 15b2 may be single or plural, but in order to more reliably block the path of the obstacle sensing medium, a plurality of the blocking members 15b2 are provided as shown in the illustrated example. It is preferable that
Further, the material of the blocking member 15b2 is more effectively a material that easily absorbs the obstacle sensing medium, for example, a plate material that is coated with a low-saturation color tone such as black or dark blue on the surface, or the like. Rubber materials, synthetic resin materials, wood, sponge-like members, and the like.

  According to this opening / closing device D, even if the obstacle sensing medium released from the discharge portion 52 is slightly released radially and heads toward the end of the opening / closing body 10 in the closing direction, it is blocked by the blocking member 15b2. Therefore, it is difficult to reach the capturing unit 53.

In addition, the said recessed part 15b1 and the interruption | blocking member 15b2 can be substituted to each aspect shown in each of FIG.15 (b) thru | or (d).
FIG. 15B shows a structure in which the movable member 15b of the seat plate member 12 is formed to have a substantially mountain-shaped concave section, and one or more movable members 15b are disposed in the concave portion 15b1. In addition to being able to block the object sensing medium, it also has the effect of reflecting the obstacle sensing medium in a direction other than the capturing part 53 by the inclined inner surface of the recess 15b1.

  FIG. 15C shows the movable member 15b of the seat plate member 12 having a substantially semicircular concave section, and one or a plurality of movable members 15b are disposed in the concave portion 15b1. In addition to being able to block the obstacle sensing medium by 15b, the obstacle sensing medium is also reflected in the direction other than the capturing part 53 by the curved recess 15b1 inner surface.

  FIG. 15D shows a structure in which the movable member 15b of the seat plate member 12 has a substantially inverted W-shaped cross section, and one or more movable members 15b are disposed in the recesses 15b1 and 15b1. Further, the obstacle sensing medium can be blocked by the movable member 15b, and the obstacle sensing medium is reflected in the direction other than the capturing part 53 by the inclined recess 15b1 inner surface.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an example of a switchgear to which an obstacle sensing structure for a switchgear according to the present invention is applied, with a main part cut away. The principal part perspective view of the obstruction detection structure for the switchgear. The principal part disassembled perspective view of the obstacle detection structure for the switchgear. (IV)-(IV) sectional view taken on the line in FIG. (V)-(V) sectional view taken on the line in FIG. Sectional drawing which shows operation | movement of a contact detection means sequentially to (a) and (b). Sectional drawing explaining an effect | action of a reflection means. The schematic diagram which shows the effect | action by making the discharge | release part inclined. Sectional drawing which shows operation | movement of a non-contact sensing unit sequentially to (a) and (b). The principal part perspective view which shows the other examples of the obstruction detection structure for switchgear concerning this invention. (XI)-(XI) sectional view taken on the line in FIG. The principal part sectional drawing which shows the other example of the obstruction detection structure for switchgear concerning this invention. It is principal part sectional drawing which shows the other examples of the obstruction detection structure for switchgear concerning this invention, (a) shows the state which protruded the reflection means from the edge part by the side of the closing direction of an opening-closing body, (b) Indicates a state in which the reflecting means is folded. The principal part perspective view which shows the other examples of the obstruction detection structure for switchgear concerning this invention from the downward side. (A) is a perspective view showing the obstacle sensing structure for a switchgear shown in FIG. 14, and (b) to (c) are perspective views showing other examples of the obstacle sensing structure for a switchgear according to the present invention. Figure.

10: Opening and closing body 12: Seat plate member 12d, 13d, 14d: Reflecting means (misreflection preventing means)
12e: Closure plate (sensor protection means)
12f: wiping member (sensing unit protecting means)
13e: Inclined surface 14a, 14b, 14c, 14d: Inclined surface 15b1: Recess 15b2: Blocking member 20: Guide rail 21: Guide piece 23: Inspection unit 40: Contact sensing means 50: Non-contact sensing means 50a: Release side non-contact Sensing unit 50b: Capture-side non-contact sensing unit 51: Proximity sensing unit 52: Release unit 53: Capture unit 54: Unit main body 55: Weight adjustment member A, B, C, D: Opening / closing device p: Contact target part

Claims (11)

In the obstacle detection structure for an opening / closing device provided at least in an opening / closing body operable in the closing direction, and detecting an obstacle closer to the closing direction than the opening / closing body,
Non-contact sensing means and erroneous reflection preventing means are provided at the end of the opening / closing body on the closing direction side,
The non-contact sensing means includes a discharge part and a capture part so as to protrude from the end of the opening / closing body on the closing direction side to the opening / closing body closing direction, and discharges an obstacle sensing medium from the discharge part in the width direction of the opening / closing body. And an obstacle entering the path of the obstacle sensing medium is sensed by the capturing unit,
The erroneous reflection preventing means is brought into contact with the end of the opening / closing body on the closing direction side so as to prevent the obstacle sensing medium from being captured by the capturing part due to erroneous reflection. An obstacle sensing structure for a switchgear comprising a reflecting means for reflecting an obstacle sensing medium in a direction other than the capturing part at one or both of the parts to be contacted . The erroneous reflection preventing means may be configured such that one or both of the end portion on the closing direction side of the opening / closing body and the contact target portion contacted by the opening / closing body to be closed in the opening / closing body opening / closing direction. 2. The obstacle sensing structure for a switchgear according to claim 1, wherein the obstacle sensing structure is tilted in the thickness direction of the switchgear so that there is substantially no surface perpendicular to the switchgear. 3. The switchgear according to claim 1 or 2 , wherein the erroneous reflection preventing means has an end face in the closing direction of the opening / closing body inclined so as to reflect the obstacle sensing medium in the thickness direction of the opening / closing body. Obstacle sensing structure. 4. The erroneous reflection preventing means is characterized in that the end of the opening / closing body in the closing direction is formed in a substantially concave-convex shape with a plurality of inclined surfaces inclined in the opening / closing body thickness direction. Obstacle sensing structure for switchgear. The erroneous reflection preventing means causes the end of the opening / closing body on the closing direction side to project a portion on the center side in the opening / closing body thickness direction into a substantially mountain-shaped cross-section and to close the opening / closing body. 5. The obstacle sensing structure for an opening / closing device according to claim 4, wherein both end portions in the direction protrude in an inclined manner in the opening / closing body closing direction . The erroneous reflection preventing means is provided at an end portion on the closing direction side of the opening / closing body, and is provided to move the end portion in the opening / closing body opening direction by contact with the contact target portion. The obstacle detection structure for a switchgear according to any one of claims 1 to 5 . The above-mentioned erroneous reflection preventing means is configured to move an end of the opening / closing body closing direction side in the opening / closing body opening direction by being folded by contact with the contact target portion. The obstacle sensing structure for a switchgear according to claim 6 . The erroneous reflection preventing means includes a blocking member at one or both of the end on the closing direction side of the opening / closing body and the contact target portion contacted by the opening / closing body to be closed,
The switchgear according to any one of claims 1 to 7, wherein the blocking member intersects with the path so as to block the path of the obstacle sensing medium toward the one or both parts. Obstacle sensing structure. The erroneous reflection preventing means includes a recess that opens in the closing direction of the opening / closing body and extends in the width direction of the opening / closing body at the end of the opening / closing body in the closing direction, and the blocking member is disposed in the recess. The obstacle sensing structure for a switchgear according to claim 8 , wherein the obstacle sensing structure is a switch. In the obstacle detection structure for an opening / closing device provided at least in an opening / closing body operable in the closing direction, and detecting an obstacle closer to the closing direction than the opening / closing body,
Non-contact sensing means and erroneous reflection preventing means are provided at the end of the opening / closing body on the closing direction side,
The non-contact sensing means includes a discharge part and a capture part so as to protrude from the end of the opening / closing body on the closing direction side to the opening / closing body closing direction, and discharges an obstacle sensing medium from the discharge part in the width direction of the opening / closing body. And an obstacle entering the path of the obstacle sensing medium is sensed by the capturing unit,
The erroneous reflection preventing means is brought into contact with the end of the opening / closing body on the closing direction side so as to prevent the obstacle sensing medium from being captured by the capturing part due to erroneous reflection. An obstacle sensing structure for a switchgear comprising an obstacle sensing medium transmitting means for transmitting the obstacle sensing medium at one or both of the contact target parts . The erroneous reflection preventing means supports the discharge part such that the discharge direction is inclined at a predetermined angle toward the opening / closing body, and the predetermined angle is detected between the discharge part and the capturing part. The obstacle sensing structure for a switchgear according to any one of claims 1 to 10, wherein the obstacle sensing structure is set within a range in which a linear path of the medium can be secured .

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