JPS6339863Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a spring operating device that opens and closes opening/closing equipment, and in particular relates to an improvement of the spring operating device that allows the operating state of the spring to be known from outside the operating device box. .

2. Description of the Related Art Many spring operating devices are known that use the force of a spring as a driving force to open/close an opening/closing device or the like. A spring operating device using a compression coil spring can have a structure as shown in FIGS. 1 and 2. That is, the compression coil spring 1 is mounted between spring receivers 4 and 5 which are respectively fixed to a spring receiver 2 and a rod 3 which is slidably fitted in the spring receiver 2 in the axial direction. The spring receiver 2 is rotatable about the rotating shaft 6, which is pivoted by bearings 8 and 9 fixed to the operating device box 7, as shown in FIG. The rod 3 fixing the spring receiver 5 with the stopper 10 is movable in the axial direction under the force of the spring 1, and the end of the rod 3 is pivotally connected to the outer end of the pivot link 12 by a pin 11. The link 12 is pivotally connected to a support bracket 13 fixed to the device box 7 by a pin 14, and is rotatable about the pin 14. Output shaft 15 concentric with pin 14 (Figure 2)
The lever 16 supported from the operating device box 7 by the lever 16 is rotatable together with the output shaft 15 about the pin 14 and the output shaft 15. Link 1 only when colliding with mating surface 16a or 16b
It is configured to rotate together with 2.

Regarding the operation, the link 12 is moved from the position shown in FIG.
When rotated counterclockwise around the pin 14 as shown in FIG.
6a is disengaged, and the rod 3 slides into the spring receiver 2 in the axial direction while compressing the spring 1 via the spring receiver 5. At the same time, the rod 3,
The spring receiver 2 and the spring 1 are rotated clockwise about the rotating shaft 6. As the counterclockwise rotation of the link 12 continues, the spring 1 is further compressed and the link 12 and the rod 3 are compressed as shown in FIG.
When the spring 1 becomes straight and is located on a straight line connecting the center of the pin 14 and the center of the rotating shaft 6, the amount of compression of the spring 1, that is, the stored force becomes maximum. When the link 12 is further rotated in the counterclockwise direction from the state shown in FIG. be rotated. As the link 12 rotates, the drive piece 12a abuts against the engagement surface 16b of the lever 16, so that the lever 16 is then rotated together and the output shaft 15 is also rotated. That is, the output shaft is driven by the force caused by the release of the spring 1. The counterclockwise rotation of the link 12 thus causes the lever 16 to also rotate in the same direction due to the spring force, but this rotation is stopped when the lever 16 hits the stopper bolt 18 screwed into the stopper seat 17. , the state shown in FIG. 4 is reached.

From the state shown in FIG. 4, when the link 12 is reversely rotated clockwise as shown by arrow c, the spring 1 is compressed and stored, and returns to the state shown in FIG. 3 from the opposite direction. When the state is passed, the spring 1 is released and the link 12 is rotated clockwise by rapid rotation, and the drive piece 12a engages the engagement surface 16a of the lever 16.
After the lever 16 and the output shaft 15 collide with each other, the lever 16 and the output shaft 15 are driven clockwise, and when the lever 16 hits the stopper bolt 20 screwed into the stopper seat 19, the rotation of the lever 16, the output shaft 15, and the link 12 is stopped. The state returns to the state shown in FIG. In this manner, the spring operating device rotates the output shaft using the force of the spring, and thereby performs opening/closing operations of opening/closing equipment, etc. The spring receiver 2, the rod 3, and the rotating shaft 6 are members that are rotated in response to the spring's loading and unloading movements.

In such a spring operation device, when the spring is in a compressed state, there is a risk that the spring may be released due to vibrations or the like, which may cause an accident during inspection or maintenance. Moreover, in the past, for example, the door 21 (Figs. 1, 3, and 4) of the spring operating device box 7 made it impossible to see the internal spring's loading and unloading movements, so there was a drawback that the above-mentioned dangers could not be predicted. Ta.

This invention was made in order to eliminate the above-mentioned drawbacks, and the purpose is to provide a spring operating device that can check the amount of energy stored in the spring, and is linked to the compression storage and release movements of the spring. It is characterized by the fact that it has a pointer that moves the pointer, and the amount of energy stored and released in the spring can be determined by the movement of this pointer.

The invention will be explained below with reference to the illustrated embodiments. Since the members indicated by reference numerals 1 to 21 in FIGS. 5 to 10 are completely the same as the members with the same reference numerals in FIGS. 1 to 4, detailed explanation thereof will be omitted.
In this invention, as shown in FIGS. 5 to 10, a pointer is attached to the spring receiver 2 and the rod 3, which rotate as the spring 1 is loaded and released. 22 and rotate shaft 6.
A name plate 23 having a square hole 23a is provided near the tip of a pointer 22 that rotates around , and a scale 24 is provided along one side of the square hole 23a. Control device box door 2
1 is provided with a window 25 through which the square hole 23a can be seen from the outside.

In this invention, as described above, since the pointer 22 is provided, when the link 12 is rotated in the direction of the arrow a from the state shown in FIGS. 3 and the spring receiver 2 are rotated in the direction of the arrow d, and at the same time the spring 1 is compressed and stored energy. However, when the spring receiver 2 is rotated in the direction of the arrow d, the pointer 22 attached to it is rotated. It is rotated in the direction of arrow e. The rotation of the pointer 22 can be visually observed through the window 25 as its tip moves along the scale 24 within the square hole 23a.

As described above, the energy of the spring 1 is stored until the link 12, the rod 3, and the spring receiver 2 are in a straight line, as shown in FIG. However, since this rotation can be visually observed by the movement of the pointer 22, the amount of energy stored in the spring 1 can be visually determined by the movement of the pointer 22 along the scale 24. In the embodiment just described, as shown in FIG. 8, when the pointer 22 comes to the center of the scale 24,
The amount of energy stored in spring 1 becomes maximum.

7 and 8, the spring 1 switches to the released state and, as previously described, the spring 1 switches to the released state and the lever 16 is moved as described above.
hits the stopper bolt 18, and the release of the spring 1 ends; however, in the illustrated example, at this position, the pointer 22 is in the first position.
As shown in Figure 0, it is located at the lowest end of the scale 24,
This indicates that spring 1 has finished being released.

Although the above embodiment shows a structure in which the pointer 22 is fixed to the spring receiver, it may also be attached to the rotating shaft 6, or the pointer may be connected to a member that rotates together with the spring 1 through a link or the like. good. Further, the name plate 23 may be colored in place of the scale 24 to display the amount of energy stored in the spring.

As described above, according to this invention, the amount of energy stored in the spring can be known at all times through the combination of a pointer linked to the compression and expansion movements of the spring and a name plate with scales, etc., which allows inspection and maintenance. It is also possible to check the state of the spring during operations, etc., which has the effect of greatly increasing work safety.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one example of the structure of a spring operating device in which the force of a compression spring is used as the driving force for the output shaft, in a spring released state; FIG. 2 is a side view of the device shown in FIG. 1;
Fig. 3 is a front view similar to Fig. 1 showing the spring in its maximum tension state, and Fig. 4 is the same front view as Fig.
5 is a front view showing one of the spring release states of an embodiment of the spring operating device of this invention, FIG. 6 is a side view, and FIG. 7 is the same as that shown in FIG. 5. FIG. 8 is a front view showing the spring in its maximum loaded state; FIG. 9 is a front view showing another released state; FIG.
The figure is a side view. 1... Compression coil spring, 2... Spring receiver, 3
... Rod, 4, 5 ... Spring receiver, 6 ... Rotating shaft, 7 ... Operating device box, 8, 9 ... Bearing, 10 ...
... Stopper, 11, 14 ... Pin, 12 ... Link, 13 ... Support bracket, 15 ... Output shaft,
16... Lever, 17, 19... Stopper seat, 1
8, 20...stopper bolt, 21...door, 22
...Pointer, 23...Name plate, 23a...Square hole, 24
...Scale, 25...window.

Claims (1)

[Claims for Utility Model Registration] A lever to which an output shaft for operating an opening/closing device is fixed; a link that engages with the lever to cause rotation of the output shaft; a rod connected to the link; a spring receiver into which a rod is fitted and is swingably supported; a compression coil spring installed between a pair of spring receivers each fixed to the rod and the spring receiver; and the spring receiver. A pointer that protrudes from the pointer and whose tip moves in an arc as the spring receiver swings; and a name plate that is placed close to the pointer and is provided with a square hole and a scale. Naru spring operation device.