JPS6212079Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a braking/manual device in a shutter opening/closing machine, and is designed to effectively and reliably brake the reversal of the rotating shaft during winding and unwinding of the shutter, regardless of whether it is manual or electric. In the case of winding up, the braking state is released at the same time as the winding operation.

Conventionally, a shutter opening/closing machine having a mechanism for raising and lowering a shutter includes a reducer 19 for adjusting the speed of a rotating shaft during raising and lowering,
It is formed of an electric motor 20 for rotating the rotary shaft, a braking device for stopping the winding after winding has been completed or in the middle of winding and unwinding, and a manual device for performing manual winding operation. However, in particular, the interlocking state of the above-mentioned braking device and manual device, and the main rotating shaft 2 which is connected to the shutter on the one hand and the braking device on the other hand, is extremely complicated and the operating conditions are inefficient. The specific situation is as described below.

In other words, when hoisting or lowering a shutter, whether to use manual or electric operation, it is necessary to switch to either operation each time.In manual hoisting, the hoisting operation and the braking release operation must be separated. What must be done during operation; When the brake is released, the manual device may also rotate along with the rotation of the main rotating shaft; The braking device and the manual device are separate units, and operations are required to link them. In addition, the rotation of the main rotating shaft and the braking of the rotation by the braking device must be performed separately.

Therefore, it is an extremely irrational mechanism because multiple operations are required to raise and lower the shutter, and since each mechanism is separate, effective linked operations cannot be performed, which makes it impossible to achieve effective and reliable braking. There are many inconvenient problems such as poor performance, and resolving these problems is a common concern among manufacturers and consumers.

Therefore, in order to solve the above problems, the applicant of this invention built a structure in which a main rotating shaft, a braking mechanism, and a manual mechanism were combined in series into the same frame as a brake and manual mechanism. By doing this,
This is a shutter designed to eliminate the above-mentioned inconveniences of conventional shutters, with an emphasis on ensuring that each mechanism operates effectively and reliably in each series with a single operation, regardless of whether the shutter is hoisted up or down, whether manual or electric. The purpose of this invention is to provide a brake/manual device for a switchgear, and its configuration will be described below with reference to a drawing showing one embodiment.

This invention is a shutter opening/closing machine consisting of a speed reducer, an electric motor, and a brake/manual device, which has a locking protrusion 3 rotatably disposed inside the brake/manual device 1 on the same axis as the main rotating shaft 2. A brake support shaft 4 also serves as a manual rotation shaft, and a fitting hole 5 is fitted into the locking protrusion 3 of the brake support shaft 4.
a cam plate 7 having a mountain-shaped cam groove 6 on the other side thereof and rotating with the rotation of the brake support shaft 4;
A slide key 9 whose lower end rotor 8 is fitted into the cam groove 6 of the cam plate 7 to be interlocked with the rotation of the cam plate 7; and the slide key 9.
A detent plate 1 is fixed to the inner circumferential wall of a frame body 11 and has an appropriate number of notches 10 arranged at equal intervals over the entire circumference and can be freely fitted to the upper end by sliding up and down.
2, a stopper 13 pivotally supported by a shaft at a position on the inner peripheral wall of the frame 11 adjacent to the detent plate 12, and a concave-convex portion 14 with which the tip of the stopper 13 engages when winding of the shutter is stopped. A brake wheel 15 has an appropriate number of cylindrical parts around its entire circumference and is rotatably attached to the brake support shaft 4 so as to move in conjunction with the rotation of the cam plate 7 and slide key 9, and an outer peripheral end of the brake wheel 15. A connecting plate 16 is attached to the end of the main rotating shaft 2.
The brake wheel 15 is made up of a connecting portion 17 of the shutter and an actuating body 18 that is actuated so that the shutter can be freely detached and detached. This is a brake/manual device for a shutter opening/closing machine, characterized in that it is connected by being crimped to a connecting plate 16.

In the above configuration, the main rotating shaft 2 has one end protruding outside the reducer 19 to which the shutter is connected, and the other end passing through the inside of the reducer 19 and electric motor 20 and located inside the brake/manual device 1. Arrange it so that it does.

The brake support shaft 4 is arranged on the same axis as the main rotation shaft 2 so that its end faces the brake support shaft 4, and the brake/manual device 1
It is rotatably arranged inside the main rotating shaft 2 like the main rotating shaft 2,
Further, a suitable locking protrusion 3 is formed on the outer periphery, and this also serves as a manual rotation shaft for manual winding operation.

The cam plate 7 is provided with a fitting hole 5 that fits into the locking projection 3 of the brake support shaft 4 at an arbitrary location off the center, and the hole 5 is fitted into the locking projection 3 to support the brake. It is attached so that it rotates with the rotation of the shaft 4. Furthermore, a mountain-shaped cam groove 6 is provided at the other side of the location where the fitting hole 5 is provided.

The slide key 9 has a trochanter 8 attached to its lower end so as to fit into the cam groove 6 provided in the cam plate 7, but the trochanter 8 is designed to freely roll in the cam groove 6. When the trochanter 8 rolls to the top of the cam groove 6, the slide key 9 slides upward, and when the trochanter 8 rolls to the end of the cam groove 6, the slide key 9 slides downward. It is connected to the cam plate 7 so that it slides.

The anti-rotation plate 12 is fixed to the inner peripheral wall of the frame 11 of the brake/manual device 1, and an appropriate number of notches 10 are formed at equal intervals around the entire circumference. , so that the upper end portion thereof can be fitted when the slide key 9 slides upward.

The stopper 13 may be attached to a location adjacent to the anti-rotation plate 12 fixed to the inner circumferential wall of the frame 11 by being pivoted by a shaft or the like, but its structure may be one that is commonly used. A ratchet type or other type may be used.

The brake wheel 15 has an appropriate number of concave and convex portions 14 formed around its entire circumference, and when the shutter stops winding, the concave and convex portions 14 engage with the tip of the stopper 13 to brake the reverse movement. It is rotatably attached to the brake support shaft 4 so as to move in conjunction with the rotation of the cam plate 7 and slide key 9. Furthermore, a space 21 that allows the cam plate 7 to rotate and perform eccentric movement, and a space 22 that allows the slide key 9 to slide vertically are formed inside.

The actuating body 18 may be actuated by either electric or manual operation, but a spring 24 or the like is inserted into the gap 23 between the actuating body 18 and the brake support shaft 4, and the actuating body 18 is attached to the end of the main rotating shaft 2. To the attached connecting plate 16,
When the outer circumferential ends of the brake wheels 15 are connected by pressure bonding, the springs 24 and the like are released from the compressed state and the brake wheels 15 move toward the connection plate 16. Also, when releasing the connection,
The magnetic force of the actuating body 18 may attract the side surface of the brake wheel 15, separate the brake wheel 15 from the connecting plate 16, and move the spring 24 and the like into a compressed state.

Next, the operating state of this invention will be explained as follows.

First of all, in the case of manual winding operation, the handle 26 is attached to the handle attachment part 25 which is the end of the brake support shaft 4 protruding outside from the frame 11 of the brake/manual device 1, and the handle 26 is When the handle 26 is turned, the brake support shaft 4 rotates, and the main rotation shaft 2 connected to the brake support shaft 4 through the brake wheel 15 also rotates, and the shutter is wound up.
At the beginning of rotation, the brake support shaft 4 rotates, and at the same time, the cam plate 7 eccentrically rotates about 30 degrees around the brake support shaft 4, and the slide that had been located at the top of the cam groove 6 until then rotates. As the trochanter 8 of the key 9 rolls toward its end, that is, moves from the position shown in FIG. 3 to the position shown in FIG.
The slide key 9, whose upper end is fitted into the space 22 of the brake wheel 15, slides downward through the space 22 of the brake wheel 15 and is automatically released from the braking state. When the uneven portion 14 and the stopper 13 are released from the engagement state and rotated,
The main rotating shaft 2 connected thereto also rotates, and the shutter is wound up.

Second, when stopping the manual hoisting operation after finishing or in the middle of it, when the rotation of the brake support shaft 4 is stopped, the tip of the stopper 13 is engaged with the concavo-convex portion 14 of the brake wheel 15. The slide key 9 moves the space 22 of the brake wheel 15 upward by moving from the position shown in FIG. 4 opposite to the position shown in FIG. 3 to the position shown in FIG. It slides, and its upper end fits into the notch 10 of the anti-rotation plate 12. Therefore, the brake wheel 15 is subjected to two stages of braking: the original direct braking by the stopper 13 and the indirect braking by the fitting of the slide key 9 and the anti-rotation plate 12, thereby ensuring that the brake wheel 15 is not reversed. is prevented.

Thirdly, in the case of an electric hoisting operation, the main rotating shaft 2 is rotated by the electric motor 20 in a state where the wheel 15 and the connecting plate 16 are separated by attracting the side surface of the brake wheel 15 by the magnetic force of the operating body 18. The shutter is wound up, but at that time, when the motor 20 stops, the operating body 18 loses its magnetic force, and the attracted brake wheel 15 is crimped and connected to the connecting plate 16 by the force of the spring 24. Engagement of stopper 13 and brake wheel 15 and slide key 9
The braking method is achieved by fitting the anti-rotation plate 12.

Fourthly, when lowering the shutter in a rolled-up state, when lowering it electrically, the actuating body 18 is excited and the side surface of the brake wheel 15 is attracted to the connecting plate 1.
6 and the brake wheel 15 are detached, the main rotating shaft 2 is released, becomes freely rotatable, and descends electrically.
In the case of manual lowering, by pulling the brake support shaft 4 backward, it resists the spring 24, etc. of the actuating body 18 in the direction in which it is compressed, that is, to the right of the arrow of the actuating body 18 shown in FIGS. 1 and 2. When moved in the direction, the connecting plate 16 and the brake wheel 15 are separated, the main rotating shaft 2 is released and becomes rotatable, and the shutter is automatically lowered.

As explained above, the brake/manual device for the shutter opener/closer of this invention has a structure in which the main rotating shaft, the braking mechanism, and the manual mechanism are combined in series within the same frame. , and a brake wheel, a cam plate, and a slide key are coupled to operate in series and are rotatably attached to a brake support shaft, and furthermore, braking is performed by the slide key and the anti-rotation plate, and braking is performed by the brake wheel and the stopper. By ensuring a two-stage braking operation and freely connecting or releasing the series of braking mechanisms and the main rotating shaft, the main rotating shaft is securely fixed inside the frame and the shutter is not hoisted. The most effective, reliable, and safe braking action can be expected during unwinding, and it is possible to provide an efficient braking/manual device that can automatically switch between manual and electric power with a one-touch operation. .

[Brief explanation of the drawing]

The drawing shows one embodiment of the brake/manual device in the shutter opening/closing machine of this invention.
The figure shows the overall condition of the shutter opening/closing machine, and is a longitudinal sectional front view of the main parts showing the inside of the brake/manual device. Figure 2 is an enlarged longitudinal sectional view showing only the brake/manual device in Figure 1. FIG. 4 is an enlarged side view of the main parts showing the operational relationship between the cam plate, slide key and rotation stopper plate, and FIG. 5 is an enlarged side view of the main part showing the operational relationship between the stopper and the brake wheel. In the drawing, 1 is a brake/manual device, 2 is a main rotating shaft, 3 is a locking projection, 4 is a brake support shaft, 5 is a fitting hole, 6 is a cam groove, 7 is a cam plate, 8 is a trochanter, 9 1 is a slide key, 10 is a notch, 11 is a frame, 12 is a rotation stopper plate, 13 is a stopper, 14 is an uneven portion, 15 is a brake wheel, 1
6 is a connecting plate, 17 is a connecting portion, and 18 is an operating body.

Claims (1)

[Scope of utility model registration request] In a shutter opening/closing machine consisting of a speed reducer, an electric motor, and a brake/manual device, the brake/manual device 1 is rotatably disposed on the same axis as the main rotating shaft 2 and has a locking protrusion 3 and a manual rotating shaft. The brake support shaft 4 has a dual-purpose brake support shaft 4, a fitting hole 5 is fitted into the locking protrusion 3 of the brake support shaft 4, and a mountain-shaped cam groove 6 is provided in the other side of the fitting hole 5. a cam plate 7 which rotates with the rotation of the cam plate 7; a slide key 9 whose lower end rotor 8 is fitted into the cam groove 6 of the cam plate 7 to move in conjunction with the rotation of the cam plate 7; A detent plate 12 is fixed to the inner circumferential wall of the frame body 11 and has an appropriate number of notches 10 at equal intervals over the entire circumference, which can be fitted into the upper end portion by sliding the key 9 up and down; A stopper 13 is pivotally supported by a shaft at a position on the inner peripheral wall of the frame 11 adjacent to the stopper plate 12, and a concave-convex portion 14 is provided around the entire circumference of the stopper 13 so that the tip of the stopper 13 engages when winding of the shutter is stopped. A suitable number of the above cam plate 7 and slide key 9 are included.
a brake wheel 15 rotatably attached to the brake support shaft 4 to interlock with the rotation of the brake wheel 15;
A connecting portion 17 of a connecting plate 16 that has an outer peripheral end of the brake wheel 15 attached to an end of the main rotating shaft 2.
and an actuating body 18 that is actuated to allow the shutter to be freely attached and detached, and when the shutter stops winding up or down, the brake wheel 15 is connected to the connecting plate 16 of the main rotating shaft 2 by the force of the spring 24. A brake/manual device for a shutter opening/closing machine characterized by being connected by crimping.