JP2006140040A - Sliding key and door switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid deformation damage of an operation key by colliding with other object even if a sliding key is slide projected when a door is open in the sliding key used for a door switch constituted so that insertion/removal of the operation key into/from a switch body and insertion/removal of a bolt member into/from a metal fitting are simultaneously performed by slide operation of the sliding key when the door is closed. <P>SOLUTION: A guard part G is connected with the bolt member 11, and the operation key 18 is located in a flat part the guard part G. In this case, a sectional shape seen from a slide direction of the bolt member 11 is constituted in an L-shape wherein an outer vertical side part 11a and a lateral side part 11b are connected, and the operation key 18 is located in a space surrounded by the outer vertical side part 11a and the lateral side part 11b. Thereby, a protective function of the operation key 18 becomes high, and maintainability of the operation key 18 becomes excellent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door switch equipped at an entrance / exit of a safety door, a fence door or the like in a work area where an industrial device, an industrial robot or the like is installed, and a slide key used therefor.

  The above door switch is used to prevent accidents due to inadvertent entry into the work area. The door body is attached to a fixed frame of the entrance / exit in the work area and the door that swings the door is opened / closed. An operation key is provided at the end, the door is closed and the power is turned on when the operation key is inserted into the switch body, the power is turned off when the door is opened and the operation key is removed, and the door is closed properly Otherwise, the internal device is not operated (see, for example, Patent Document 1).

In addition, the switch body and the bracket are attached to the fixed frame of the doorway, and the slide key with a handle is formed by integrating the operation key inserted into and removed from the switch body from the lateral direction and the cannula member inserted and removed from the lateral direction of the bracket. Is attached to the end of the swingable door so that it can be slid, and when the slide key is slid when the door is closed, the operation key is inserted into and removed from the switch body and the cannula member is inserted into and removed from the bracket at the same time. Thus, a door switch configured to exhibit a function of fixing the door in the closed position by the engagement between the metal fitting and the cannula member has been put into practical use.
JP 2002-157944 A

  The above-mentioned conventional slide key has a structure in which kanuki members are arranged in parallel with the operation key supported in a cantilevered manner toward the door end, and the operation is performed when the slide key is slid backward. The key is retracted from the end of the door, but if the slide key is projected and slid with the door open, the operation key is projected from the end of the door and exposed.

  For this reason, if you close the door without noticing that the slide key is protruding and sliding, the protruding operation key will hit the bracket and the fixed frame of the doorway, and if you close the door vigorously The operation key may be deformed or damaged. Further, when the operator holds a large tool or machining part and passes through the doorway, if the slide key slides and protrudes, the tool or machining part may hit the protruding operation key.

  In addition, the handle provided on the conventional slide key is of a considerably large size to facilitate the operation of the slide key and the opening and closing of the door, and the handle protrudes considerably from the door. For this reason, when the door is closed and the slide key is properly slid, the operator who passes near the door accidentally hits a handle that protrudes greatly and the slide key is retracted and the power is turned off. There was also a risk that the internal equipment would suddenly stop.

  The present invention has been made paying attention to such a situation, and even if the slide key slides out with the door opened, it can be avoided that the operation key hits another object and is deformed and damaged. Another purpose is to prevent the slide key from being accidentally slid backward when the door is closed.

  In order to achieve the above object, the present invention is configured as follows.

  That is, the slide key of the present invention has a switch main body and a receiving metal fitting attached to the fixed frame of the entrance and exit, an operation key that is inserted into and extracted from the horizontal direction of the switch main body, and a cannula member that is inserted into and removed from the horizontal receiving metal The slide key is integrated to the end of the swingable door so that it can be slid, and the operation key to the switch body and the cannula member to the socket are simultaneously inserted and removed by the sliding operation when the door is closed. A slide key used for a door switch, wherein a guard part is formed on the cannula member, and the operation key is arranged so as to be protected by the guard part.

  Here, the kanuki member refers to a member that is used by being inserted into a metal fitting attached to a fixed frame of an entrance such as a safety door.

  The kanuki member formed with the guard portion preferably has a shape that surrounds and protects the operation key, and may have a cylindrical shape or the like so as to surround the entire circumference of the operation key. For example, a U-shaped cross section may be formed so as to surround a surface, for example, an upper surface, a lower surface, or a side surface.

  According to the present invention, even when the door is closed without noticing that the slide key protrudes from the end of the door when the door is open, the guard portion that protects the operation key only hits the receiving bracket. Thus, no external force is directly applied to the operation keys. Also, when an operator passes a door with a large tool or machined part, the guard part protects the operation key even if the tool or machined part accidentally hits the protruding slide key. become.

  Therefore, even when the slide key protrudes in a state where the door is opened, it is possible to prevent the operation key from colliding with another object to be deformed or damaged, and to constitute a door switch with excellent durability. it can.

  The slide key of the present invention has a switch main body and a receiving metal fitting attached to a fixed frame of the entrance and exit, an operation key that is inserted into and removed from the horizontal direction of the switch main body, and a cannula member that is inserted into and extracted from the horizontal direction of the receiving metal fitting. The slide key is integrated to the end of the swingable door so that it can be slid, and the operation key to the switch body and the cannula member to the socket are simultaneously inserted and removed by the sliding operation when the door is closed. A slide key used for a door switch, wherein the operation key is arranged on the back side of the cannula member so that the front side of the operation key is hidden by the cannula member.

  Here, the fact that the surface side of the operation key is hidden by the cannula member means that the cannula member cannot be seen by blocking the surface side of the operation key, and that the operation key is arranged in the projection region of the cannula member. .

  Further, the entire surface of the operation key does not need to be completely hidden by the cannula member, and may be at least partially hidden.

  According to the present invention, since the operation key is arranged on the back side of the cannula member, when the operator passes a doorway with a large tool or machining part, the tool or machining part protrudes. Even if the slide key is accidentally hit, the kanuki member protects the operation key.

  In a preferred embodiment of the present invention, a cross-sectional shape of the kanuki member formed with the guard portion as viewed from the sliding direction is formed in an L shape, and the operation key is disposed in a space surrounded by the L shape. is doing.

  According to this embodiment, the bending strength of the kanuki member is high and the protective function of the operation key is sufficiently exerted, but the operation key can be easily viewed from above and from the inside of the door to easily deform or wear the operation key. It can be visually recognized and the maintenance of the operation keys is excellent.

  In one embodiment of the present invention, the cannula member is connected to a slide plate that is slidably attached to the door, and the operation key is attached to the base of the cannula member.

  According to this embodiment, compared to the case where the kanuki member and the operation key are separately attached to the slide plate and integrated, for example, both can be integrated with high relative positional accuracy, and the durability of the operation key is improved. It is possible to constitute a slide key that is excellent in the operation and has high operation accuracy.

  In another embodiment of the present invention, a handle is connected to the slide plate.

  According to this embodiment, the slide operation can be easily performed with the handle.

  The door switch of the present invention has a switch main body and a receiving bracket attached to a fixed frame at the doorway, and a slide key of the present invention is slidably attached to the end of a swingable door, and can be operated by sliding in a door closed state. A door switch that simultaneously inserts and removes the operation key to the switch body and the cannula member to the receiving metal, and the protruding height of the receiving metal is substantially equal to the protruding height of the handle.

  Here, “substantially equivalent” means that the difference in protrusion height is within several centimeters, preferably within several millimeters.

  It is preferable that the protruding height of the catch is the same as or slightly higher than the protruding height of the handle.

  According to the present invention, in an operating state in which the door is closed and the slide key is properly slid, even if an operator who passes near the door accidentally hits the door, the operator contacts the metal fitting in advance. Thus, it is avoided that the handle is pushed in the retraction slide direction, and it is possible to prevent the slide key from being erroneously retreated during operation and suddenly stopping the internal device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of a doorway in a door closed state, FIG. 2 is a perspective view showing a switch body and a receiving metal fitting in a door switch, FIG. 3 is a perspective view showing a slide key in a protruding slide state, and FIG. It is a perspective view which shows the door switch part operated by the door closed lock state.

  In FIG. 1, the upper side of the entrance / exit 1 is a work area A for industrial equipment, industrial robots, etc., and is fixed to one fixed frame 2 that forms the left and right ends of the entrance / exit 1, around the fulcrum x. The door 3 is hinged so as to be able to swing open, and a safety door switch S is provided over the other fixed frame 4 and the free end side of the door 3.

  The door switch S is configured as a combination of a switch main body 5 and a receiving metal fitting 6 that are attached and fixed to the fixed frame 4 and a slide key 7 that is slidably mounted on the outer surface of the free end portion of the door 3. .

  As shown in FIG. 2, the switch body 5 is mounted in a lateral posture on a mounting substrate 8 screwed to the outer surface of the fixed frame 4, and is opened toward the doorway 1 side on the end surface of the head portion 5a. The key insertion slot 9 is provided. Although a detailed configuration is not illustrated, a rotating cam that is rotated forward and backward by inserting and removing a dedicated operation key 18 into and from the key insertion slot 9 inside the switch body 5 and forward and reverse of this cam. A switching mechanism that performs contact switching by rotation is built in, and the driving power source is turned on and off for various devices installed in the work area A.

  The bracket 6 is also fixed to the mounting substrate 8 and has an L-shape into which a rectangular opening 10 into which the head portion 5a of the switch body 5 is inserted and a cannula member 11 described later provided in the slide key 7 is inserted and removed. An engagement hole 12 is formed. In addition, a magnet catch 13 that attracts and holds the slide key 7 that has been slid is attached to the lower portion of the receiving bracket 6, and a lockout tag piece 14 is placed around the lateral fulcrum y at the upper end of the receiving bracket 6. It is pivotally mounted so that it can be pivoted up and down, and is normally held in a posture in which the front surface of the receiving metal fitting 6 is opened by being turned upside down as indicated by an imaginary line in FIG. It is possible to switch to a lockout posture that swings down and covers the front surface of the receiving metal fitting 6.

  On the other hand, as shown in FIG. 3, a mounting board 15 is screwed to the outer surface of the free end side peripheral frame 3a of the door 3, and the slide key 7 is supported on the mounting board 15 so as to be slidable laterally.

  The slide key 7 includes a slide plate 17 supported on the mounting substrate 15 via a guide rail 16 so as to be slidable horizontally, an operation key 18, the kanuki member 11, a handle 19, and an inner handle 20 shown in FIG. The operation key 18 and the cannula member 11 project from the front end of the slide plate 17 in a cantilevered manner toward the door free end. The operation key 18 is disposed on the back side of the cannula member 11, and when viewed from the front, the surface of the operation key 18 is blocked by the cannula member 11 and hidden.

  Further, the handle 19 is bent in an arch shape in plan view, and is screwed over the front and rear of the slide plate 17, and the inner handle 20 is screwed to the rear end of the slide plate 17, as shown in FIG. As shown, it penetrates through a slit 21 formed in the door 3 and extends inside the door.

  Here, as shown in FIGS. 6 and 8 to be described later, the protruding height of the receiving metal fitting 6 from the door outer surface is set substantially equal to the protruding height of the handle 19, and the slide key 7 moves backward and forward. Even if a person or other object moving in the direction approaches, the handle 19 is prevented from being pushed in the backward sliding direction by the person or other object by contacting the metal fitting 6 in advance. ing.

  The cannula member 11 is forged or die-cast, and as shown in FIG. 9, the cross-sectional shape viewed from the sliding direction is such that the lateral side portion 11b is connected to the lower end of the outer longitudinal side portion 11a. The rear end base is screwed to the front end of the slide plate 17.

  The operation key 18 is formed by punching a metal flat plate into a predetermined shape, and is screw-connected to the inner side of the base portion of the cannula member 11 in a vertical posture. Further, the operation key 18 is provided in a space surrounded by the outer vertical side portion 11a and the horizontal side portion 11b so as to be positioned inside the planar shape of the horizontal side portion 11b of the cannula member 11. That is, the lateral side portion 11b of the cannula member 11 is configured as a guard portion G that prevents other objects from coming into contact with the operation key 18 from the inside of the door.

  Further, an iron plate attracting piece 22 facing the magnet catch 13 is attached to the bottom surface of the base portion of the cannula member 11.

  The slide key 7 of the door switch according to the present invention is configured as described above. As shown in FIGS. 5 and 6, the door 2 is swung to the closed position while the slide key 7 is slid backward, Next, when the slide key 7 is slid and operated by holding the handle 19, the operation key 18 is inserted into the key insertion port 9 of the switch body 5 as shown in FIGS. Then, the power is turned on, and the cannula member 11 is inserted into and engaged with the engagement hole 12 of the receiving metal fitting 6 to prevent the door 3 from swinging open. In this case, the magnet catch 13 attracts the attracting piece 22, and an appropriate resistance is given to the backward slide of the slide key 7.

  Further, when the slide key 7 is slid in the protruding direction, the colored mark 23 attached to the outer surface of the cannula member 11 overlaps the see-through window 24 formed on the metal fitting 6. By visually recognizing that the entire 24 is filled with the colored mark 23, it is possible to recognize that the sliding operation has been properly performed.

  Even if the door 2 is closed without noticing that the slide key 7 has been accidentally protruded and slid, the operation key 18 is within the outer shape of the guard portion G (lateral side portion 11 b) in the cannula portion 11. 18 does not hit the receiving bracket 6.

  When the slide key 7 is reversely operated by overcoming the attractive force of the magnet catch 13, the contact of the switch body 5 is switched by removing the operation key 18 and the power is turned off. Is disengaged and the door 3 can be swung open.

  A through hole 25 is formed at the tip of the cannula member 11, and the doorway 2 is closed by hooking a padlock on the through hole 25 of the cannula member 11 that penetrates the engagement hole 12 of the receiving metal fitting 6. Can be kept.

  In addition, when performing maintenance work or cleaning work in the internal work area A, or when stopping the equipment in the work area A, as shown in FIG. The door 3 can be opened and closed in a lockout posture in which the switch body 5 cannot be operated, that is, in a power-off state in which the devices in the work area A cannot be operated. In addition, in the case of the above-mentioned operation or when the equipment is to be stopped for a long period of time, the hole 26 formed at the lower end of the tag piece 14 in the lockout posture and the hole 27 formed at the lower end of the receiving metal fitting 6 are used. The tag piece 14 can be prevented from being swung up and opened with a padlock.

  The present invention can also be implemented in the following forms.

  (1) The cross-sectional shape seen from the sliding direction of the cannula member 11 is formed into an inwardly open U-shape in which the lateral side portion 11b is connected to the upper and lower sides of the outer vertical side portion 11a. The operation key 18 may be protected by the side 11b.

  (2) It is also possible to implement the cannula member 11 in the form of a rectangular tube or cylinder having an opening surrounding the head portion of the switch body 5 and the operation key 18 being positioned therein. In this case, the entire cannula member 11 exhibits the function of the guard part G.

  (3) The guard part G may be omitted.

Top view of the doorway with the door closed A perspective view showing a switch body and a receiving metal fitting in a door switch A perspective view showing a slide key in a protruding slide state The perspective view which shows the door switch part operated by the door closed lock state Front view of door switch with slide key sliding backward Top view of the door switch with the slide key sliding backward Front view of the door switch with the door closed and locked Top view of the door switch with the door closed and locked Longitudinal sectional view showing the positional relationship between the kanuki member and operation keys Front view of the door switch set in the lockout state

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Entrance / exit 3 Door 4 Fixed frame 5 Switch main body 6 Receiving metal fitting 7 Sliding key 11 Kanuki member 11a Outside vertical side part 11b Horizontal side part 17 Slide plate 19 Handle G Guard part

Claims (6)

Attach the switch body and the receiving bracket to the fixed frame of the doorway, and the slide key formed by integrating the operation key inserted into and removed from the switch body from the lateral direction and the cannula member inserted from the lateral direction into the receiving bracket. A slide key that is attached to an end of a swingable door so as to be slidable, and is used for a door switch that simultaneously inserts and removes the operation key to the switch body and the cannula member to the metal fitting by the sliding operation in the door closed state. ,
A slide key characterized in that a guard portion is formed on the cannula member and the operation keys are arranged so as to be protected by the guard portion. Attach the switch body and the receiving bracket to the fixed frame of the doorway, and the slide key formed by integrating the operation key inserted into and removed from the switch body from the lateral direction and the cannula member inserted from the lateral direction into the receiving bracket. A slide key that is attached to an end of a swingable door so as to be slidable, and is used for a door switch that simultaneously inserts and removes the operation key to the switch body and the cannula member to the metal fitting by the sliding operation in the door closed state. ,
A slide key characterized in that the operation key is arranged on the back side of the cannula member so that the front side of the operation key is hidden by the cannula member.   The cross-sectional shape seen from the sliding direction of the kanuki member on which the guard portion is formed is formed in an L shape, and the operation key is arranged in a space surrounded by the L shape. Slide key.   The slide key according to any one of claims 1 to 3, wherein the kanuki member is connected to a slide plate slidably attached to the door, and the operation key is attached to a base portion of the kanuki member.   The slide key according to claim 4, wherein a handle is connected to the slide plate. A switch body and a metal fitting are attached to the fixed frame of the doorway, and the slide key according to claim 5 is slidably attached to the end of the swingable door, and the switch body is moved to the switch body by the sliding operation in the door closed state. A door switch that simultaneously inserts and removes a cannula member into and from a receiving bracket,
The door switch according to claim 1, wherein the protruding height of the metal fitting is substantially equal to the protruding height of the handle.

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