JP3041073U - Emergency bell - Google Patents

Abstract

(57) [PROBLEMS] To reduce the manufacturing cost by enabling the gear device and the striking device of the mainspring power unit to be formed of synthetic resin, and to provide a structure that enables the striking time of the striking device to be as long as possible. To provide. A central portion 105 of a mainspring 101 is attached to a main shaft 23 to which a bell 1 is attached. Main spindle 2
3 is provided with a main spur gear 27, and a striking mechanism for striking the bell 1 via a gear device meshing with the main spur gear is configured. The gear device is provided with a movable secondary gear 33 for disengaging from the mesh when winding the mainspring. The striking mechanism includes a one-tooth feed timing tooth 41 for converting a rotary motion by a gear device into a swing motion,
A timing arm 51 is provided. A lock member 77 for locking the timing arm 51 is provided on one side of the timing arm 51. Operating end 8 of locking member 77
5 is in contact with or linked to one side of the emergency equipment.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an emergency bell using a mainspring as a power unit.

[0002]

[Prior art]

 A conventional fire alarm device using a mainspring as a power source is disclosed in, for example, Japanese Utility Model Laid-Open No. 59-96694.

In the above conventional fire alarm device, in order to keep the mainspring power device, the bell-striking device for striking the bell in cooperation with the mainspring power device, and the above-mentioned mainspring power device normally locked. Locking means interlocked with the fire detector.

[0004]

[Problems to be solved by the device]

 According to the above-mentioned conventional fire alarm device, a winding means is provided for winding the mainspring. In addition, the striking device has a drawback that the structure is complicated because it is linked directly via the gear device without being directly related to the locking means. Another conventional emergency alarm device transmits power from a mainspring to a timing gear and rotates the timing gear one tooth at a time so that the timing arm is swung and fixed at the tip of the timing arm. I'm trying to ring the bell. Since the hammer is fixed to the tip of the timing arm in this way, it is necessary to make fine adjustments to the timing at which the hammer strikes the bell, which not only complicates the adjustment work, but also increases the manufacturing cost. It had a problem of being lost. In addition, if the timing at which the beating sounds the bell and the adjustment of the mechanical parts are not adjusted accurately, the bell cannot be efficiently sounded, and the duration of the bell driven by the mainspring is shortened. It had a problem of being lost.

The present invention has been made in view of the above problems, and in an emergency bell powered by a mainspring, the duration of a bell can be extended as long as possible with a limited power of the mainspring. Another object of the present invention is to provide an emergency bell that can simplify the assembly work and reduce the manufacturing cost with a simple structure.

[0006]

[Means for Solving the Problems]

 A first means provided by the present invention for solving the above-mentioned problems is characterized by having the following requirements. That is, (a) it has a bell, a spindle to which the bell is attached, and a mainspring attached to the spindle. (B) A main gear attached to the main shaft, a slave gear linked to the master gear, and a timing gear linked to the slave gear. (C) The slave gear is movably provided, and when the mainspring is wound up, the slave gear moves and the linkage with the master gear is released. (D) It has an arm body that swings around a swing shaft in cooperation with the timing gear. (E) The arm body has a first pawl and a second pawl extending in opposite directions from the swing shaft, and the first pawl and the second pawl alternately mesh with the timing gear. To swing the arm. (F) The arm body has a beating portion provided on the opposite side of the swing shaft from the first and second claws, and the beating portion is provided so as to be movable. (G) A lock member for locking the swing of the arm body is provided near the arm body.

The second means provided by the present invention is characterized by having the following requirements. That is, (a) it has a bell, a spindle to which the bell is attached, and a mainspring attached to the spindle. (B) A main shaft made of synthetic resin attached to the main shaft, a slave gear made of synthetic resin linked to the main gear, and a timing gear made of synthetic resin linked to the slave gear. (C) The slave gear is movably provided, and when the mainspring is wound up, the slave gear moves and the linkage with the master gear is released. (D) An arm member made of synthetic resin that swings around a swing shaft in cooperation with the timing gear. (E) The arm body has a first pawl and a second pawl extending in opposite directions from the swing shaft, and the first pawl and the second pawl alternately mesh with the timing gear. To swing the arm. (F) The arm body has a beating portion provided on the opposite side of the swing shaft from the first and second claws, and the beating portion is provided so as to be movable. (G) A lock member made of synthetic resin that locks the swing of the arm body is swingably provided near the arm body. (H) It has an elastic member for urging the lock member in the unlocking direction. (I) By causing the lock member to cooperate with the emergency device, the lock member is swung in the locking direction against the elastic force of the elastic member.

[0008]

[Embodiment of the invention]

 As shown in FIG. 1, it has a metal bell 1 formed in an inverted bowl shape. A recess 4 is formed in the outer center of the bell 1, and a mounting boss 3 is formed in the inner center of the bell 1 corresponding to the recess 4. A female screw 5 is formed on the mounting boss 3. In this way, the outer surface of the bell 1 is formed as a curved surface, and the concave portion 4 is formed at the center thereof, so that it does not have any protrusions, and it is likely to be caught on the clothes of people who evacuate in an emergency. There is no such fear. A power spring 101 is provided as a power unit for striking the bell 1. The winding 101 is housed in a housing formed by a synthetic resin base 121 and a synthetic resin mainspring cover 71. Three columns 19 project from the top of the mainspring cover 71. Female screws 21 are formed on each of the columns 19, and an upper plate 9 made of synthetic resin is attached by screws 7 for fixing. By fixing the mainspring cover 71 and the upper plate 9 in this manner, a plurality of bearing portions are formed on the mainspring cover 71 and the upper plate 9.

A center hole 17 is formed in the upper plate 9, and a tip portion of the main shaft 23 is projected from the center hole 17. A male screw 25 to be screwed onto the female screw 5 of the mounting boss 3 on the side of the bell 1 is formed at the tip of the main shaft 23. A main spur gear 27 made of synthetic resin is fixed to the main shaft 23. A groove 26 is formed at the lower end of the main shaft 23, and the center portion 105 of the mainspring 101 is engaged with the groove 26.

An elongated hole 11 is formed in the mainspring cover 71 and the upper plate 9 concentrically with the central hole 17, and a slave gear shaft 29 made of synthetic resin is movably supported along the elongated hole 11. ing. A secondary pinion 31 made of synthetic resin and a secondary spur gear 33 made of synthetic resin are integrally formed on the secondary gear shaft 29. A timing gear shaft 35 made of synthetic resin is borne in the first bearing hole 13. A timing pinion 37 made of synthetic resin, which meshes with the secondary spur gear 33, is fixed to the timing gear shaft 35. A timing spur gear 39 made of synthetic resin is fixed to the timing pinion 37.

A shaft end 43 of a timing arm shaft 45 made of synthetic resin is borne by the second bearing hole 15. A timing arm 51 made of synthetic resin is fixed to the timing arm shaft 45. At one end of the timing arm 51, a first claw 47 and a second claw 49 that can contact the timing spur gear 39 are provided. That is, it has an arm body (timing arm 51) made of a synthetic resin that swings around a swing shaft (timing arm shaft 45) in cooperation with the timing spur gear 39. The arm body (timing arm 51) has a first claw 47 and a second claw 49 extending in opposite directions from the swing shaft (timing arm shaft 45). The claws 47 and the second claws 49 alternately mesh with the timing spur gear 39 to swing the timing arm 51. A hammer 53 for hitting the inner surface of the bell 1 is loosely attached to the other end of the timing arm 51 by a washer 55 and a screw 57. Specifically, the tap 53 has a hole larger than the diameter of the screw 57 and smaller than the diameter of the washer 55, and the tap 53 can freely move within the range of the hole. There is. That is, the timing arm 51 has a beating portion (a hammer 53) provided on the side opposite to the first claw 47 and the second claw 49 with respect to the timing arm shaft 45 that is a swing shaft. The tapping portion (tapping metal 53) is movably provided.

The base 121 made of synthetic resin is attached to the lower end of the mainspring cover 71 by screws 95 through the attachment holes 123. A locking shaft 125 is provided at one corner of the base 121, and a support shaft 93 is projectingly provided at the other corner. The end 103 of the mainspring 101 is hooked on the locking shaft 125. A rotation shaft 91 of a lock member 77 is rotatably mounted on the support shaft 93. The lock member 77 made of synthetic resin has a first arm 81 and a second arm 83 extending from the support shaft 93. A coil spring 79 is inserted between the first arm 81 and the mainspring cover 71. The coil spring 79 is an elastic member that biases the lock member 77 in the unlocking direction.

By linking the lock member 77 with an emergency device such as an escape ladder, the lock member 77 is swung in the lock direction against the elastic force of the coil spring 79, which is the elastic member. It has become so. That is, the L-shaped member 89 is integrally formed at the end of the second arm 83 of the lock member 77. The locking end 87 of the L-shaped member 89 is projected near the side portion of the timing arm 51 through the lock member protruding hole 73 of the mainspring cover 71. The operating end 85 of the L-shaped member 89 is projected to the outside through the lock member notch 75 of the mainspring cover 71. This working end 85 is linked to an emergency device such as an escape ladder.

The emergency bell shown in FIG. 1 is provided, for example, in the vicinity of the evacuation ladder hatch. In this case, the operating end 85 of the lock member 77 comes into contact with the inner surface of the hatch cover body 2 so that the operating end 85 is pressed inward against the elastic force of the coil spring 79. Attached to. In this state, since the lock end 87 of the L-shaped member 89 presses the timing arm 51, the movement of the timing arm 51 is blocked.

In the above example, the operation of the timing arm 51 is blocked at the locking end 87 by pressing the operating end 85 of the lock member 77 inward, but the first arm 81 side is the coil spring. The lock end 87 of the L-shaped member 89 may be brought into contact with the timing arm 51 by pulling against the 79 to prevent the operation of the timing arm 51.

As shown in FIG. 4, a mounting groove 141 is formed on the back side of the base 121, and a substantially U-shaped mounting plate having a mounting edge 143 for engaging with the mounting groove 141. 145 can be formed. If the mounting plate 145 is screwed to a desired mounting surface, the main body can be easily mounted by simply sliding the mounting groove 141 of the base 121 to the mounting edge 143 of the mounting plate 145. It can also be easily removed if necessary.

Next, the operation will be described. In the above configuration, as shown in FIG. 3A, when the bell 1 is rotated clockwise with the cover body 2 removed, the male screw 25 is screwed into the female screw 5 to the limit. The main shaft 25 rotates integrally with the main shaft 25, and the mainspring 101 is wound up from the central portion 105 that engages with the groove 26 at the lower end of the main shaft 25.

At this time, the rotation of the main spur gear 27 is also transmitted to the slave pinion 31, but the slave gear shaft 29 moves clockwise along the slot 11 and the slave spur gear 33 moves away from the timing pinion 37. It becomes free and the mainspring 101 can be easily rolled up without resistance. When the mainspring 23 is wound up to the limit and then the hand is released from the bell 1, the main shaft 23 is rotated counterclockwise by the restoring force of the mainspring 101, and the slave spur gear 33 meshes with the timing pinion 37.

In the above state, when the cover body 2 is attached at a fixed position as shown in FIG. 3B, the operating end 85 of the lock member 77 is pushed inward against the coil spring 79, and the lock end 87 contacts the timing arm 51, and the movement of the timing arm 51 is stopped. The mainspring 101 is held in such a wound state.

In an emergency, when the escape ladder hatch is opened, the cover body 2 is disengaged, and the operating force 85 of the lock member 77 is pushed outward by the restoring force of the coil spring 79. At this time, the lock end 87 separates from the timing arm 51, and the timing arm 51 becomes free. As a result, the main shaft 23 and the main spur gear 27 rotate counterclockwise due to the restoring force of the mainspring 101. The rotation of the main spur gear 27 is transmitted to the timing spur gear 39 via the slave pinion 31 and the slave spur gear 33, and the speed increasing gear device such as the timing pinion 37.

Since the timing teeth 41 of the timing spur gear 39 are formed in a mountain shape, the first claw 47 and the second claw 49 that face the timing teeth 41 are arranged so as to move up to the crests of the timing teeth 41. , The locking operation of entering the valley is alternately performed at a constant timing. That is, when the first claw 47 side rides on the ridge of the one timing gear 39, it swings around the timing arm shaft 45 and the other second claw 49 side enters the other valley of the timing tooth 41. , And gives a braking effect of temporarily stopping the rotation of the timing gear 39. Next, when the second pawl 49 side rides on the crest of the timing gear 39, the other first pawl 47 side also enters the other valley of the timing tooth 41, and the braking that temporarily stops the rotation of the timing gear 39. Give effect.

As described above, the timing teeth 41 are moved one by one by the first claw 47 and the second claw 49 operating at a constant timing with respect to the rotational movement of the timing gear 39. Then, the timing arm 51 side is converted into a swinging motion around the timing arm shaft 45. By this swinging motion of the timing arm 51, the beating metal 53 can strike the inner surface of the bell 1 and cause the bell 1 to ring. Due to the one-tooth feed motion of the timing gear 39, the mainspring 101 gradually returns slowly over time. Here, since the beating metal 53 is attached to the tip of the timing arm 51 in a freely movable state, the swing width when the timing arm 51 swings can be made constant without any special adjustment. As a result, the timing spur gear 39 can be reliably and efficiently rotated one tooth at a time. As a result, the bell 1 can be struck for a long time by the mainspring 101, which is a limited power source.

In the above embodiment, the cover body 2 is configured by using the cover body attached to the escape ladder hatch, but the present invention is not limited to this, and other emergency equipment such as fire extinguishing equipment may be used. The present invention can be applied to a structure that also serves as a container such as a container or an emergency ladder, or a locking means such as an emergency exit, or is associated therewith. In this case, when using these fire extinguisher or emergency ladder, emergency exit, etc., the cover that is the cover body is opened or removed, and based on the opening or removing operation of this cover body or lid body. The bell rings and can trigger an emergency alarm. Further, in the above, the operating end 85 and the hatch cover body 2 are linked, and the operating end 85 is pressed against the elastic force of the coil spring 79, so that the locking end 87 presses the timing arm 51. Although the movement of the timing arm 51 is blocked by the above, the locking and unlocking may be performed by manual operation without linking the operating end 85 with other devices. With such a configuration, the emergency alarm can be generated by ringing the bell by manually operating the operating end 85 before operating the emergency equipment in an emergency.

The main spur gear 27, the slave pinion 31, the slave spur gear 33, the timing pinion 37, the timing gear 39, the first pawl 47, the second pawl 49, the timing arm 51, etc. are molded of synthetic resin. Since it is easy to form, the number of parts is small, the assembly is easy, and the manufacturing cost can be greatly reduced.

Next, another embodiment according to the present invention will be described with reference to FIGS. The present embodiment is characterized in that the lock member 77 is linked to the hatch 205 of the evacuation ladder, which is an emergency device, in a pulled state. The mainspring cover 71 is provided with a notch 202 at a position facing the first arm 81, and an opening can be easily formed along the notch 202. The lock member 77 and the hatch 205 can be linked through this opening. First, a mounting member 201 is attached to an appropriate position of the first arm 81 of the lock member 77, and one end of an appropriate connecting member 203 such as a chain or a string is connected to the attaching member 201. There is. The other end of the connecting tool 203 is linked to the hatch 205 of the evacuation ladder. The lock arm 87 is pressed against the timing arm 51 by pulling the first arm 81 outward by the connecting tool 203. In this way, the lock end 87 presses the timing arm 51, so that the timing arm 51 is prevented from swinging.

In an emergency, when the hatch 205 of the evacuation ladder is opened, the connector 203 loosens, and the elastic force of the coil spring 79 moves the lock member 77 in the unlocking direction. When the lock member 77 moves in the unlocking direction, the timing arm 51 is set in a swingable state. That is, the lock end 87 is separated from the timing arm 51, and the timing arm 51 becomes free. As a result, the main shaft 23 and the main spur gear 27 rotate counterclockwise by the restoring force of the mainspring 101. The rotation of the main spur gear 27 is transmitted to the timing spur gear 39 via the slave pinion 31 and the slave spur gear 33, and the speed increasing gear device such as the timing pinion 37.

With respect to the rotational movement of the timing spur gear 39, the first pawl 47 and the second pawl 49 operate at a constant timing, so that the timing teeth 41 are moved one by one. Then, the timing arm 51 side is converted into a swinging motion around the timing arm shaft 45. By this swinging motion of the timing arm 51, the beating 53 can strike the inner surface of the bell 1 and cause the bell 1 to ring. Due to the one-tooth feed motion of the timing gear 39, the mainspring 101 gradually returns slowly over time. Here, since the hammer 53 is attached to the tip of the timing arm 51 in a freely movable state, it is possible to make the swing width of the timing arm 51 constant when the timing arm 51 swings without any special adjustment. Therefore, the timing spur gear 39 can be reliably and efficiently rotated one tooth at a time. As a result, the bell 1 can be struck for a long time by the mainspring 101 which is a limited power source.

Next, another embodiment according to the present invention will be described with reference to FIG. This embodiment is characterized in that the operating end 385 of the lock member 77 has a flat shape. In this embodiment, the plate-shaped operating end 385 is formed to have the same thickness as the mainspring cover 71, and an opening 386 having the same width as the operating end 385 is opened on the upper surface of the mainspring cover 71. . A stopper 388 is provided at the end of the opening 386. As a result, the plate-like operating end 385 moves along the opening 386, and the lock end 387 presses the timing arm 51 to prevent its operation. As described above, since the plate-shaped operating end 385 is formed to have the same thickness as the mainspring cover 71, the opening 386 itself provided on the upper surface of the mainspring cover 71 functions as a guide plate, and the operating end 385 is It is possible to surely move along the opening 386.

[0029]

【Example】

 According to one embodiment of the above invention, the height is 12 cm, the width is 9.5 cm, and the height is 4.5 cm. When the mainspring had a width of about 7 mm and a maximum diameter of about 8 cm, Bell 1 was able to ring for about 6 minutes.

[0030]

[Effect of the invention]

 As described above, in the device according to the first aspect of the present invention, since the mainspring is attached to the main shaft to which the bell is attached, the mainspring can be wound by rotating the bell, and it is not necessary to provide a separate mainspring winding means. , The structure can be simplified. Further, the gear device can be easily formed by molding synthetic resin, the number of parts is small, the assembly is easy, and the manufacturing cost can be significantly reduced. The timing arm of the striking mechanism swings in response to the rotational movement of the timing gear of this gear device, and the timing gear is moved one tooth at a time. Has the effect of being able to perform the belling. In addition, since the beating part for beating the bell is attached to the tip of the arm body in a state where it can freely move, the swing range when the arm body swings can be made constant without any special adjustment. Therefore, the timing spur gear can be reliably and efficiently rotated one tooth at a time. This has the effect that the bell can be struck for a long time by the mainspring, which is a limited power source.

Further, the invention according to claim 2 of the present application has a bell, a main shaft to which the bell is attached, and a mainspring attached to the main shaft, and is a synthetic resin main gear attached to the main shaft. And a slave wheel made of synthetic resin linked to the main gear, and a timing gear made of synthetic resin linked to the slave gear. The slave gear is movably provided, and when the mainspring is wound up, the slave gear moves and the linkage with the main gear is released. Further, it has a synthetic resin arm body that swings about a swing shaft in cooperation with the timing gear, and the arm body has a first pawl extending in opposite directions from the swing shaft, and a second claw. The first claw and the second claw alternately mesh with the timing gear to swing the arm body. Further, the arm body has a beating portion provided on the side opposite to the first and second claws with respect to the swing shaft, and the beating portion is provided so as to be movable. A lock member made of a synthetic resin that locks the swing of the arm body is swingably provided near the arm body. There is an elastic member that urges the locking member in the unlocking direction, and by linking the locking member with an emergency device, the locking member swings in the locking direction against the elastic force of the elastic member. Since it is configured to be moved, each component can be easily manufactured, and the simple structure can simplify the assembly work and reduce the manufacturing cost. In addition, since the beating part for beating the bell is attached to the tip of the arm body in a state where it can freely move, the swing range when the arm body swings can be made constant without any special adjustment. Therefore, the timing spur gear can be reliably and efficiently rotated one tooth at a time. This has the effect that the bell can be struck for a long time by the mainspring, which is a limited power source.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an essential part of an emergency bell showing an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view of the emergency bell of the present invention.

FIG. 3 is a cutaway side view of essential parts for explaining the operation of the emergency bell of the present invention.

FIG. 4 is a rear perspective view showing an example of an emergency bell mounting structure of the present invention.

FIG. 5 is a perspective view showing another embodiment according to the present invention.

6 is a perspective view showing a mounting state of the embodiment of FIG.

FIG. 7 is a perspective view showing another embodiment according to the present invention.

[Explanation of symbols]

 1 bell 2 cover body 3 mounting boss 5 female screw 23 main shaft 27 main spur gear 33 slave spur gear 39 timing gear 41 timing tooth 51 timing arm 77 lock member 85 working end 101 mainspring 105 central part

Claims (2)

[Utility model registration claims] 1. An emergency bell provided with the following requirements. (A) A bell, a main shaft to which the bell is attached, and a mainspring attached to the main shaft. (B) A main gear attached to the main shaft, a slave gear linked to the master gear, and a timing gear linked to the slave gear. (C) The sub gear is movably provided, and when the mainspring is wound up, the sub gear moves and the linkage with the main gear is released. (D) An arm body that swings around a swing shaft in cooperation with the timing gear. (E) The arm body has a first claw and a second claw extending in opposite directions from the swing shaft, and the first claw and the second claw are provided.
The claws of the gears alternately mesh with the timing gears to swing the arm body. (F) The arm body has a beating portion provided on the side opposite to the first and second claws with respect to the swing shaft, and the beating portion is provided so as to be movable. (G) A lock member that locks the swing of the arm body is provided near the arm body. 2. An emergency bell provided with the following requirements. (A) A bell, a main shaft to which the bell is attached, and a mainspring attached to the main shaft. (B) A synthetic resin main gear attached to the main shaft, a synthetic resin slave gear linked to the master gear, and a synthetic resin timing gear linked to the slave gear. (C) The sub gear is movably provided, and when the mainspring is wound up, the sub gear moves and the linkage with the main gear is released. (D) A synthetic resin arm body that swings around a swing shaft in cooperation with the timing gear. (E) The arm body has a first claw and a second claw extending in opposite directions from the swing shaft, and the first claw and the second claw are provided.
The claws of the gears alternately mesh with the timing gears to swing the arm body. (F) The arm body has a beating portion provided on the side opposite to the first and second claws with respect to the swing shaft, and the beating portion is provided so as to be movable. (G) A lock member made of synthetic resin that locks the swing of the arm body is swingably provided near the arm body. (H) It has an elastic member for urging the lock member in the unlocking direction. (I) By causing the lock member to cooperate with the emergency device, the lock member is swung in the locking direction against the elastic force of the elastic member.