JP6352078B2 - Monitoring device - Google Patents

Description

  The present invention relates to a cable storage device and a monitoring device that store a cable with a space provided.

Fire detectors include relatively directional detectors such as flame detectors. Such a sensor may be configured to detect a position where a flame is generated by mounting on a rotatable base and swinging the base with a motor.
By the way, in an apparatus having a mechanism for swinging a base on which a sensor is mounted as described above, power is supplied to an electronic component such as a sensor on the base or an electric device, or a detection signal is transmitted. Cable to connect.

  On the other hand, a device that receives a detection signal is often installed in a region that does not move. Therefore, the cable that electrically connects the oscillating base and the fixed device repeats the operation of being pulled out and returned, that is, repeatedly deforms. As a result, the cable sheath may be damaged, or the core wire may be subjected to metal fatigue, resulting in a reduction in the cable life. In the worst case, a short circuit or a disconnection may occur.

Japanese Patent Laid-Open No. 10-212077 JP 2012-201468 A

Conventionally, as a device for storing cords connected to electronic components and electrical equipment mounted on a rotating base, the cords are neatly formed by forming a spiral groove on the peripheral surface of a rotatable hobbin or drum. Devices have been proposed that can be wound or delivered (see, for example, Patent Document 1 and Patent Document 2).
According to the winding device described in Patent Document 1 and Patent Document 2, since the cord can be wound up in an orderly manner, the cord can be prevented from being damaged or disconnected, Since the groove on the peripheral surface of the drum is spiral, complicated processing for forming the groove is required, and there is a problem that the cost is increased.

For example, as shown in FIG. 8 (A), a space around the rotary shaft 13 sandwiched between a base 44 on which a sensor or the like is mounted and oscillated and a base 45 on the fixed side is used as a cable storage space, so that the cable can be bent flexibly. A configuration in which the cable 17 is housed in a state where it is not installed, or as shown in FIG. 8B, the cable 17 is housed in a state in which the periphery of the rotary shaft 13 is rotated once, so that the electrical connection is maintained. A configuration in which 44 can be swung is also conceivable. In the configuration of FIG. 8, the rotation-side base 45 is fixed to the upper end of the cylindrical support shaft 12, the rotary shaft 13 is fitted to the support shaft 12, and the swing-side base is attached to the upper end of the rotary shaft 13. 44 is fixed.
However, in the case of the configuration shown in FIG. 8A, since the cable is repeatedly bent and stretched, the cable sheath may be damaged or the core wire may cause metal fatigue, resulting in a short circuit or disconnection. There is. In the case of the configuration shown in FIG. 8B, the diameter of the storage space needs to be increased in order to allow the base 44 to swing smoothly in a wide range such as 360 degrees. Has the disadvantage of becoming larger.

  The present invention has been made by paying attention to the above-described problems, and the purpose of the present invention is to order the cables with good reproducibility even if the operation of loosening and winding the cables stored in a spiral is repeated. A cable that can maintain the stored state, thereby preventing damage to the cable sheath and causing the core wire to be fatigued of the metal, and avoiding complicated processing and cost increase It is to provide a storage device.

In order to solve the above-described problem, a monitoring device according to the invention described in claim 1 is:
A cylindrical outer case, and a cylindrical inner case having a smaller diameter than the outer case, wherein the inner case is coaxially disposed inside the outer case, and the inner case and the outer case A cable storage device that forms a space between them as a cable storage portion that can be stored in a state where the cable is wound in a spiral shape without overlapping the horizontal direction around the inner case,
The axial length of the inner case and the outer case is at least twice the height of the cable, and the outer peripheral surface of the inner case or the inner peripheral surface of the outer case is larger than the height of the cable. A plurality of fan-shaped partition members are formed on a surface orthogonal to the axis of the inner case at intervals, and any one of the plurality of spaces partitioned by the plurality of fan-shaped partition members is the cable A cable storage device set higher than twice the height of
A peristaltic mechanism that includes a driving means and relatively reciprocally rotates the inner case within a range of a predetermined angle with respect to the outer case;
A head portion mounted on a part of the case to be rotated of the inner case or the outer case;
With
A sensor is mounted on the head unit, one end of the cable is connected to the head unit, and the other end of the cable is connected to a control unit provided on the fixed side. And

According to the invention described in claim 1, since the cable can be stored in a spirally wound state, the apparatus can be miniaturized and a plurality of fan-shaped partition members are provided. The cable can be tightly wound or loosened. In addition, since the fan-shaped partition member is formed on a surface orthogonal to the axis of the inner case, the design and creation can be facilitated and the cost can be reduced as compared with the case where the partition member is provided along the spiral.
In addition, according to the first aspect of the present invention, when the head portion on which the sensor or the like is mounted is swung, the cable can be neatly wound or loosened and can be used without a long-term failure. A monitoring device can be realized.

Here, the angle of the partition member located endmost among the previous SL plurality of fan-shaped partition member is larger than 180 degrees.
Further, the angle of the partition members other than the partition member located at the end of the plurality of sector-shaped partition members is made smaller than 180 degrees.

  According to the above configuration, since only a small number of fan-shaped partition members having a narrow angle range need be provided in the cable housing portion, the amount of material to be used can be reduced, thereby reducing weight and cost. Can be planned.

Furthermore, the angle of the partition member located at the end is set to 240 to 300 degrees.
In addition, the angle of the partition member other than the partition member located at the extreme end is 80 degrees to 100 degrees.
Further, the plurality of fan-shaped partition members are two, the angle of one fan-shaped partition member is larger than 180 degrees, and the angle of the other fan-shaped partition member is smaller than 180 degrees. Also good.

Further, the one sector-shaped partition member and the other sector-shaped partition member are formed so as to be overlapped with each other in a state in which the end on the rear end side coincides with the cable winding direction.
According to such a configuration, the cable can be neatly wound or loosened with a relatively small fan-shaped partition member.
The space partitioned by the two fan-shaped partition members has a height corresponding to one stage of the cable, and the height of the space other than the space partitioned by the two fan-shaped partition members is the height of the cable. It is good to comprise so that it may have two steps of height. Thereby, when the inner case is swung within 360 degrees, the cable can be wound and loosened very smoothly.

Further, the axial lengths of the inner case and the outer case are set so that the cable can be stored in the cable storage portion in an n-stage and n-winding state (n is an integer of 2 or more). You may comprise.
Here, the swing range of the inner case is within 360 degrees.
According to such a configuration, since the swing range of the inner case is within 360 degrees, it is possible to prevent a large bending stress from acting on the cable, thereby preventing damage and breakage of the cable and the device. It is possible to extend the service life.
When the swing range is set to 360 degrees or more, by setting n of the n-stage n winding to an appropriately large value, the cable can be connected in the same manner as when the swing range is set to 360 degrees or less. Damage and breakage can be prevented and the life of the apparatus can be extended.

Furthermore, at least one partition member among the plurality of sector-shaped partition members is configured such that a standing wall is formed on at least a part of the outer edge portion thereof.
According to such a configuration, when the rotating shaft is rotated in the direction in which the cable is loosened, only the diameter of a part of the winding portion increases and the outer surface of the cable comes into contact with the inner peripheral surface of the outer case. It becomes a state and it can prevent that a rotating shaft becomes difficult to rotate with the frictional force, or a cable is damaged.

The invention according to claim 12 is the monitoring apparatus having the configuration as described above.
Each of the inner case and the outer case is formed with an insertion hole for pulling out an end portion of the cable from the cable housing portion to the outside, and the cable inserted through the insertion hole is connected to the inner case at the insertion portion. It is characterized by being respectively fixed to the said outer case.

  According to the twelfth aspect of the present invention, when the cable is tightened or loosened, the cable is prevented from being damaged or broken by rubbing the inner case or the outer case with the cable at the cable insertion portion. can do.

According to the present invention, it is possible to provide a monitoring device including a cable housing device that can wind up a cable in an orderly manner, thereby avoiding damage and avoiding complicated processing and avoiding an increase in cost. There is an effect that can be done.

It is a side view which shows one Embodiment of the monitoring apparatus using the cable storage apparatus which concerns on this invention. It is a partial cross section side view which shows the detailed structure of a cable storage apparatus. It is a perspective view which shows the specific example of the inner case which comprises the cable storage apparatus of FIG. It is a perspective view which shows the state before the assembly of the cable storage apparatus of FIG. It is a top view which shows operation | movement of the inner case in a cable storage apparatus. It is a side view which shows the accommodation state of the cable in a cable storage apparatus. It is a perspective view which shows the other example of the inner case which comprises the cable storage apparatus of FIG. It is a disassembled perspective view which shows the structural example of the conventional cable storage apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment in which the cable storage device according to the present invention is applied to a monitoring device that performs monitoring while swinging a base on which a sensor such as a flame detector is mounted as an example. In the present specification, the “cable” has a round cross section made of a core wire such as a flat cable or a coaxial cable and a covering covering it, in addition to a power cord used for power feeding. Things shall be included.

The monitoring device 10 according to this embodiment includes a mounting base 11 fixed to a wall of a building, a housing of equipment, a cylindrical support shaft 12 fixed to the mounting base 11, and an inner side of the support shaft 12. A cylindrical rotating shaft 13 into which a part is inserted, a cable storage device 14 mounted on the outer peripheral surface of the support shaft 12, and a head unit 15 having an electronic component such as a sensor mounted on the tip of the rotating shaft 13. And a control unit 16 fixed to the mounting base 11.
A cable 17 for electrically connecting the head unit 15 and the control unit 16 is stored in the cable storage device 14 in a spirally wound state, and one end 17a of the cable 17 is stored in the control unit. 16, and the other end 17 b is connected to the head portion 15.

In the monitoring device 10 of the present embodiment, although not shown, for example, an internal gear provided on the inner peripheral surface of the rotary shaft 13, a motor disposed inside the support shaft 12, and the internal gear fixed to the rotary shaft. A swing mechanism for swinging the head unit 15 is configured by an external gear meshed directly or indirectly with another gear. A motor may be mounted on the head unit 15, and a gear transmission mechanism that transmits the rotational force of the motor may be configured between the rotating shaft 13 and the support shaft 12. The head unit 15 may be equipped with a motor that changes the direction of the sensor separately from the motor that rotates the rotating shaft 13.
In the cable storage device 14 of the present embodiment, since the support shaft 12 and the rotary shaft 13 are hollow, a pipe for supplying fire-extinguishing water can be disposed inside the shaft, and water is discharged to the head portion 15. It is possible to provide a nozzle for use and rotate the rotating shaft 13 to discharge water in a desired direction.

FIG. 2 shows details of the cable storage device 14.
As shown in FIG. 2, the cable storage device 14 includes a cylindrical outer case 41 </ b> A whose one surface (upper surface in the drawing) is open, and an inner case having a cylindrical diameter smaller than the outer case 41 </ b> A. 41B, and the inner case 41b is positioned inside the outer case 41A so that a cable storage space is formed between the inner case 41B and the outer case 41A.

  An opening through which the support shaft 12 can be inserted is formed in a disk-like wall body (hereinafter referred to as a bottom plate) that closes the lower surface of the outer case 41A, and is parallel to the support shaft 12 along a part of the opening. The outer case 41A is fixed to the outer peripheral surface of the support shaft 12 with screws or the like at the mounting piece 41a. On the other hand, an opening through which the rotary shaft 13 can be inserted is formed in a disk-like wall body (hereinafter referred to as an upper plate) that closes the upper surface of the inner case 41B. A parallel mounting piece 41b is provided, and the inner case 41B is fixed to the outer peripheral surface of the rotary shaft 13 with a screw or the like at the mounting piece 41b. Two attachment pieces 41a and 41b are provided at portions facing each other with the support shaft 12 and the rotation shaft 13 therebetween.

  Further, an insertion hole for inserting the cable 17 is formed in the bottom plate of the outer case 41A, and the grommet 18A is engaged with the insertion hole, and the cable 17 penetrates the inside of the grommet 18A to a predetermined amount. The cable 17 is fixed to the bottom plate of the outer case 41A by being fixed with an adhesive, a clamp mechanism, or the like in the protruding state. On the other hand, an insertion hole for inserting the cable 17 is also formed in the upper plate of the inner case 41B. The grommet 18B is engaged with the insertion hole, and the cable 17 passes through the inside of the grommet 18B. The cable 17 is fixed to the upper plate of the inner case 41B by being fixed with an adhesive, a clamp mechanism, or the like in a state where only a fixed amount protrudes.

Further, although not particularly limited, in this embodiment, the cable 17 is spiraled in the storage space so that the outer case can be stored in a state of being wound around the inner case 41B in approximately four steps and four turns. The axial lengths of the case 41a and the inner case 41B are set. Here, the four-stage four-winding is a case of an initial state in which the inner surface of the cable 17 is in contact with the outer peripheral surface of the inner case 41B. When it is rotated 360 degrees in the loosening direction, a three-stage, three-winding state is obtained.
In order to maintain the spiral state of the cable 17, two partition plates 42A and 42B are provided on the outer peripheral surface of the inner case 41B.
In addition, the cable 17 assumed to be used in this embodiment is a 3P cord bundled with six cords and a 1P cord bundled with two cords covered with a synthetic resin tube such as a pet resin. A cable having a structure and a cross-sectional shape of an oval.

Next, details of the partition plates 42A and 42B provided on the outer peripheral surface of the inner case 41B will be described with reference to FIG.
As shown in FIG. 3, the inner case 41B is configured to be formed by abutting the end faces of two semi-cylindrical parts 41B1 and 41B2 obtained by vertically dividing a cylinder and connecting them by screws or welding. Yes.
Of the two semi-cylindrical parts 41B1 and 41B2, a semi-cylindrical part 41B1 shown in FIG. 3A has a flange portion 42a1 having a 180-degree fan shape formed at a distance L1 from the end. Yes. Further, in the semicylindrical component 41B2 shown in FIG. 3B, flange portions 42a2 and 42b having a fan shape of 90 degrees are formed at positions of distances L1 and L2 from the end portions.

Here, the distance L1 is slightly larger than the height of the cable 17, and the distance L2 is approximately twice the value of L1. The flange portions 42a1, 42a2, and 42b are formed so as to be horizontal when the axes of the semi-cylindrical parts 41B1 and 41B2 are oriented in the straight direction.
Further, the flange portions 42a2 and 42b having a 90-degree sector shape are formed so as to overlap each other when viewed from above.

As described above, when the semi-cylindrical part 41B1 having the collar part 42a1 and the semi-cylindrical parts 41B2 having the collar parts 42a2 and 42b are joined, as shown in FIG. An inner case 41B having a plate 42A and a partition plate 42B having a sector shape of 90 degrees is configured.
And the inner case 41B comprised as mentioned above is accommodated inside 41 A of outer cases, as shown in FIG. At this time, assembling is performed so that the grommet 18B through which the cable 17 is inserted comes above the vicinity of the end portion on the side where the flange portions 42a2 and 42b of the partition plate 42A do not overlap. The cable 17 wound around the cylindrical portion is wound so as to go from the upper stage to the lower stage of the partition plate 42 </ b> A through the 90-degree opening formed in the upper partition plate 42 </ b> A.

In FIG. 4, the upper plate 44 of the inner case 41B and the cylindrical main body portion of the inner case 41B are separated, but the upper plate 44 of the inner case 41B and the cylindrical main body portion are formed integrally. .
Further, in the embodiment of FIG. 1, the head portion 15 having a sensor or the like is provided at the end of the rotating shaft 13, but in FIG. 4, the upper plate 44 of the inner case 41B has a sensor or the like. The head portion 15 is shown fixed. Accordingly, in FIG. 1, the rotating shaft 13 functions as a base on which electronic components such as sensors are mounted, and in FIG. 4, the upper plate 44 of the inner case 41B functions as a base on which electronic components such as sensors are mounted.

Next, the operation of the cable storage device 14 configured as described above will be described.
In the following description, it is assumed that the cable 17 is wound around the inner case 41B in the clockwise direction when viewed from above, but the winding direction of the cable 17 is reverse, that is, counterclockwise. Also good.
The cable storage device 14 of this embodiment is configured so that the inner case 41B can be smoothly swung within a range of about 360 degrees.

  Specifically, as shown in FIG. 5A, when the rotating shaft 13 is rotated 360 degrees clockwise from a state (initial state) where the inner side surface of the cable 17 is in contact with the outer peripheral surface of the inner case 41B, The cable 17 around the inner case 41B is wound to reduce its diameter, and as shown in FIG. 5B, the cable 17 around the inner case 41B is loosened to increase its diameter. Is in a state of being close to the inner peripheral surface of the outer case 41A. On the other hand, when the rotating shaft 13 is rotated 360 degrees counterclockwise from this state, the inner side surface of the cable 17 returns to the state in contact with the outer peripheral surface of the inner case 41B as shown in FIG. .

And since the partition plates 42A and 42B are provided in the inner case 41B, the cable 17 is guided by the partition plates 42A and 42B and relatively moves when the above operation is performed. Even if the inner case 41B repeatedly swings, the overlapped state can be taken up and loosened without breaking.
6A shows the state of FIG. 5A viewed from the side, and FIG. 6B shows the state of FIG. 5B viewed from the side.
In the above description, the state of FIG. 5 (A) is the initial state, but the rotation shaft 13 is rotated 180 degrees clockwise from the intermediate state of FIG. 5 (A) and FIG. 5 (B), that is, the state of FIG. The rotated state is set as the initial state, and the rotating shaft 13 is rotated 180 degrees clockwise and counterclockwise from this state, respectively, so that the inner case 41B is wound up and loosened. May be.

  FIG. 5 shows a case where the rotating shaft 13 is rotated within a range of 360 degrees, but the peristaltic range may be 220 degrees, 320 degrees, or the like. Further, by appropriately designing the dimensions such as the diameters of the rotating shaft 13 and the inner case 41B, it is possible to rotate within a range of 360 degrees or more. However, when the rotary shaft 13 is rotated 360 degrees or more, the amount of bending of the cable 17 increases, that is, a large bending stress is repeatedly applied to the cable 17, so that the cable 17 is configured to swing within 360 degrees. Is desirable.

Next, a modification of the above embodiment will be described with reference to FIG. FIG. 7 corresponds to FIG.
In the modification of FIG. 7, of the two semi-cylindrical parts 41B1 and 41B2 constituting the inner case 41B shown in FIG. 3, the semi-cylindrical part 41B1 is as shown in FIG. It is formed in the same manner as shown in A). On the other hand, as shown in FIG. 7B, the semi-cylindrical component 41B2 has a standing wall 42a3 formed along the outer edge of the upper flange portion 42a2 of the flange portions 42a2 and 42b having a fan shape of 90 degrees. .

In this way, by forming the standing wall 42a3 along the outer edge of the flange portion 42a2, when the semi-cylindrical parts 41B1 and 41B2 are abutted and joined, as shown in FIG. The standing wall 42a3 is present in the vicinity of the opening having a fan shape.
Without the upright wall 42a3, when the rotary shaft 13 is rotated in the direction in which the cable is loosened, only the diameter of the uppermost winding portion is increased and the outer surface of the cable is the inner circumference of the outer case 41A. The rotating shaft 13 is difficult to turn due to the frictional force due to the frictional force, but the upright wall 42a3 allows the outer surface of the uppermost cable to rotate in contact with the inner peripheral surface of the outer case 41A. It is possible to prevent the shaft 13 from becoming difficult to rotate.

  The standing wall 42a3 as described above may be formed on the entire partition plate 42A, that is, on both edges of the flange portions 42a1 and 42a2. However, as described above, the standing wall 42a3 functions sufficiently by being provided only on the flange portion 42a1. We were able to confirm this by trial production. In this way, by providing the standing wall 42a3 only on the collar portion 42a1, the amount of material can be reduced as compared with the case where the upright wall 42a3 is provided on the entire partition plate 42A, thereby reducing cost and weight.

  Although the invention made by the present inventor has been specifically described based on the embodiment, the present invention is not limited to the embodiment. For example, in the embodiment, the rotary shaft 13 is inserted and supported inside the cylindrical support shaft 12, but the diameter of the rotary shaft 13 is made larger than the diameter of the support shaft 12 to support the support shaft 12. It is good also as a structure which fits the rotating shaft 13 in the outer side.

  Moreover, in the said embodiment, although what formed the fan-shaped collar part which functions as a partition plate in the outer peripheral surface of the inner case 14B was shown, the collar part which functions as a partition plate is formed in the inner peripheral surface of the outer case 14A. You may do it. In the embodiment, the 270-degree fan-shaped partition plate 42A and the 90-degree fan-shaped partition plate 42B are provided. However, the fan-shaped angles are not limited to 270 degrees and 90 degrees, and are to be stored. An arbitrary angle (for example, 240 degrees to 300 degrees and 240 degrees to 300 degrees) can be set according to the type of cable.

Further, in the above embodiment, the axial lengths of the outer case 14A and the inner case 14B are set so that the cable can be stored in the cable storage space in a state where the cable is wound in about 4 stages and 4 turns. Depending on the height), the size of the inner case 14B, and the size of the swing range, it may be 3 steps 3 turns, 2 steps 2 turns, or 5 steps 5 turns or more.
When the swing range is set to 360 degrees or more, the cable is damaged as in the case where the swing range is set to 360 degrees or less by setting n of n stages and n turns to an appropriately large value. In addition, it is possible to prevent breakage and extend the life of the apparatus.
In the above description, the present invention has been described by taking as an example the case where the present invention is applied to a cable storage device of a monitoring device equipped with a flame detector. The present invention can be widely applied to a cable storage device of a device in which electronic parts or electrical equipment is mounted.

12 Support shaft 13 Rotating shaft 14 Cable storage device 14A Outer case (outer case)
14B Inner case (inner case)
42A, 42B Partition plate (partition member)
15 Head unit 16 Control unit 17 Cable

Claims (12)

A cylindrical outer case, and a cylindrical inner case having a smaller diameter than the outer case, wherein the inner case is coaxially disposed inside the outer case, and the inner case and the outer case A cable storage device that forms a space between them as a cable storage portion that can be stored in a state where the cable is wound in a spiral shape without overlapping the horizontal direction around the inner case,
The axial length of the inner case and the outer case is at least twice the height of the cable, and the outer peripheral surface of the inner case or the inner peripheral surface of the outer case is larger than the height of the cable. A plurality of fan-shaped partition members are formed on a surface orthogonal to the axis of the inner case at intervals, and any one of the plurality of spaces partitioned by the plurality of fan-shaped partition members is the cable A cable storage device set higher than twice the height of
A peristaltic mechanism that includes a driving means and relatively reciprocally rotates the inner case within a range of a predetermined angle with respect to the outer case;
A head portion mounted on a part of the case to be rotated of the inner case or the outer case;
With
A sensor is mounted on the head unit, one end of the cable is connected to the head unit, and the other end of the cable is connected to a control unit provided on the fixed side. A monitoring device . The monitoring device according to claim 1 , wherein an angle of a partition member located at an end of the plurality of fan-shaped partition members is larger than 180 degrees. The monitoring apparatus according to claim 2 , wherein an angle of a partition member other than the partition member located at the endmost among the plurality of sector-shaped partition members is smaller than 180 degrees. The monitoring device according to claim 2 or 3 , wherein the angle of the partition member located at the end is 240 to 300 degrees. Wherein the plurality of fan-shaped partition member is two, claim 1 is the angle of one sector of the partition member greater than 180 degrees, the angle of the other sector of the partition member, characterized in that less than 180 degrees The monitoring device described in 1. The monitoring device according to claim 5 , wherein an angle of a partition member other than the partition member located at the end is 80 degrees to 100 degrees. The one sector-shaped partition member and the other sector-shaped partition member are formed at positions that overlap each other in a state in which ends on the rear end side coincide with each other in the cable winding direction. 5. The monitoring device according to 5 or 6. The space partitioned by the two fan-shaped partition members has a height corresponding to one stage of the cable, and the height of the space other than the space partitioned by the two fan-shaped partition members is two stages of the cable. The monitoring apparatus according to claim 5 , wherein the monitoring apparatus has a height of minutes. The axial lengths of the inner case and the outer case are set so that the cable can be stored in the cable storage portion in an n-stage n-winding state (n is an integer of 2 or more). The monitoring device according to claim 1. Monitoring device according to any one of claims 1 to 9, characterized in that the swinging range of the inner casing is within 360 degrees. The monitoring device according to claim 1, wherein an upstanding wall is formed on at least a part of an outer edge of at least one of the plurality of fan-shaped partition members. Each of the inner case and the outer case is formed with an insertion hole for pulling out an end portion of the cable from the cable housing portion to the outside, and the cable inserted through the insertion hole is connected to the inner case at the insertion portion. The monitoring device according to claim 1, wherein the monitoring device is fixed to each of the outer cases.