JPS605695Y2 - Locking device for drawer type opening/closing device - Google Patents

Description

[Detailed description of the invention] This invention relates to a locking device for a drawer type opening/closing device.
In particular, the present invention relates to a device for reliably pulling out and locking an opening/closing device.

A structural diagram of a conventional drawer-type opening/closing device is shown in FIG. 1, and a side view of the main parts of FIG. 1 is shown in FIG.

In the figure, A is a drawer-type switchgear (hereinafter referred to as a switch)
The drawer is housed in a fixed frame E so that it can be pulled out and pushed in.

B is a locking device, C is a tripping device, and D is an operating mechanism.

1 of the locking device B is a locking rod, which is inserted into the hole 9 of the guide 8 attached to the switch A, and when the switch A is pushed in, its one end is inserted into the locking hole 10 of the fixed frame E. inserted.

2 is a locking rod connected to locking rod 1 by a pin 7;
It is connected by a pin 6 to a lever 3 which is pivoted to a pin 5 pressed against the switch A.

Reference numeral 4 denotes a lever for raising the locking rods 1 and 2, which is pivotally connected to a pin 51 attached to the switch A, and a long hole pin 7 provided in the lever 4 is inserted and connected thereto.

Reference numeral 11 of the tripping device C is a movable lever made of a movable iron core, etc., which is attracted when the tripping coil 12 is excited, and is also pushed up by the locking rod 2.

The operating mechanism 13 is a latch with a lever that rotates when the movable lever 11 is pulled out, and engages with the roller 14.
In the position shown in this figure, switch A is in a closed state.

Next, to explain the operation, normally, when a switch is tripped, the coil 12 of the tripping device C is energized, the movable lever 11 is attracted, and the latch 13 is struck and rotated clockwise. The engagement with the roller 14 is released and the switch A is opened.

Therefore, in the state shown in FIG. 1, the switch can be opened and closed.

Next, in order to pull out the switch from the pushed-in position, as shown in the structural diagram of the main parts centering on the locking device in Fig.
The lock rod 1 is pulled out from the locking hole 10 to release the lock, allowing the switch A to be removed, and the lock rod 2 is pushed up to push up the movable lever 11 and the latch 13 is pulled up.
rotates clockwise and disengages from the waist roller 14, the roller 14 moves to the upper left, and the switch A opens.

However, locking devices that are constructed of mechanical parts, such as this locking device, may not operate properly due to dimensional errors or assembly errors in the parts.

This locking device also has such drawbacks, which are illustrated in FIGS. 4 and 5.

As shown in FIG. 4, even if the lever 4 is fully pulled up and the movable lever 11 is pressed upward, the locking rod 1 may not be completely pulled out from the locking hole 10. In this case, The switch cannot be pulled out.

Further, as shown in Fig. 5, when the lever 4 is pulled up and the locking rod 1 is pulled out from the locking hole 10 and the switch A is pulled out, the locking rod 1 is on the surface of the fixed frame. The locking rod 2 cannot push up the movable lever 11 sufficiently,
Therefore, the engagement between the latch 13 and the roller 14 could not be released, and the locking operation could not be performed.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and the locking rod pushes the movable lever in the locking direction and in the locking hole direction. It is an object of the present invention to provide a locking device that is provided between locking rods so that the locking rod can be reliably pulled out from a locking hole, and the movable lever can be sufficiently pressed and locked even when the switch is pulled out.

An embodiment of this invention is shown in FIG. 6, which is a structural diagram of the main parts centering on the locking device.

In the figure, 101, 102, 201 are locking rods,
21 is a biasing means.

A structural diagram of this biasing means is shown in FIG.

In FIG. 7, a is a front view, b is a side view of a, and C is a side view of the spring compressed by the action of the locking rod.

In the figure, 22 is a spring that connects the locking rod 102 and 2.
01.

23 is a locking pin whose one end is fixed to the locking rod 201;
The other end is inserted into the hole 33 of the locking rod 102 and has a stopper 24 at its tip.

The locking pin 23 having this stopper 24 is connected to the spring 2
2 is restricted so as not to be stretched and biased by a predetermined interval of 1 or more, and is held compressed.

The hole 32 connects the locking rod 102 to the locking rod 101 and the pin 7.
The hole 34 is provided to connect the lever 2 and the pin 3.

C in FIG. 7 shows that when the lock rod 102 is pushed upward and the lock rod 201 is fixed, the lock rod 10
1 compresses the spring 22, and the length of the waist spring, that is, the distance between the locking rods 102 and 201, decreases by a predetermined distance l.

Then, both rods 102 and 201 are biased in opposite directions.

In this way, the biasing means 21 is constructed by providing the spring 22 and the locking pin 23 having the stopper 24 between the locking rods 102 and 201.

Next, the operation will be explained.

In FIG. 6, the locking rod 101 is inserted into the locking hole 10, and at this time, the biasing means 21 is not biased with the locking rods 101 and 201 in the state shown in FIG. The movable lever 11 of the tripping device C is in an unlocked state.

FIG. 8 shows a state in which the lever 4 is pulled and the locking rod 101 is pulled out from the locking hole 10 in order to pull out and lock the switch A.

At this time, the locking rod 201 pushes up the movable lever 11 and stops at this position, but the locking rod 101 is further pushed up and compresses the spring 22, causing the locking rod 201 to press the movable lever 11. , to securely lock the tripping device C.

Furthermore, by pulling up the lever 4, the locking rod 1
01 allows the spring 22 to be completely pulled out from the compression waist locking hole 10 with a margin.

FIG. 9 shows a state in which the locking rod 101 is on the surface of the fixed frame E with the switch A pulled out.

At this time, the locking rod 101 pushes up the locking rod 201 via the spring 22, but if the spring 22 is compressed beyond a predetermined distance l, the locking rod 201
01 presses the movable lever 11 to lock it, so it can be locked reliably.

In this case, the relationship between the moving distances of lock rods 101 and 201 is longer than the distance that lock rod 201 moves between the unlocked position in FIG. 6 and the locked position in FIG. If the distance the lock rod 101 moves between the position inserted into the locking hole 10 in FIG. 6 and the position placed on the fixed frame E in FIG. The spring 22 is compressed more at a predetermined interval by the difference in the moving distance, and the movable lever 11 is pressed and locked in the state shown in FIG.

As described above, the locking rod 101 can be pulled out from the locking hole 10 with sufficient margin, and when the opening/closing device A is pulled out, the locking rod 101 can be pulled out by the pressure of the spring 22.
1 securely presses and locks the tripping device C.

In the above explanation, the locking hole 10 is located below the switchgear A,
Although the example in which the locking rod 101 moves up and down is shown, the locking hole 1
0 may be provided above, to the left, to the right of the opening/closing device A, and the locking rod 101 may be pulled out and inserted into the opening/closing device A.

Furthermore, in the above explanation, the locking rod 101 is placed on the surface of the fixed frame E when the switch A is pulled out, but the locking rod 101 is stopped at a position above this surface. Good too.

For example, by pulling up the locking rod 101, this rod 10
A movable blocking plate may be inserted under 1 to prevent the lock rod 101 from falling onto the fixed frame E.

There are various types of biasing means, and other embodiments are shown in FIGS. 10 and 11.

In FIGS. 10a and 10b, 41 and 42 are levers pivotally connected to the opening/closing device A by pins 44, and each locking rod 10
1,201 with a pin 43.

Reference numeral 46 denotes a locking pin, one end of which is pivotally connected to the lever 41 by a pin 49, and the other end has a thin diameter portion at the tip, and this portion is inserted into a hole 48 of a guide 47 attached to the lever 42. There is.

A spring 45 pulls in a direction that compresses the space between the levers 41 and 42, and a locking pin 46 regulates this distance.

That is, the force is applied so that the distance between the locking rods 101 and 201 becomes a predetermined distance (maximum).

FIG. 10 shows the state in which the locking rod 101 is pushed up, the locking rod 201 locks the movable lever 11 of the upper tripping device C, and when the locking rod 101 is further pushed up, the spring 45 is activated. The distance between the locking rods 101 and 201 after being extended is 11, which is smaller than l, and the locking rod 201
Apply pressing force to.

In the biasing means shown in FIG.
It is pivotally connected to the switch A by a pin 65 of the locking rod 101, 201 through an elongated hole 66 provided at the other end.

A stopper 62 formed by bending is provided at the end of the lever 61.

A spring 69 is wound around the pin 64, and both ends of the spring are engaged with stoppers 67 and 68 of the levers 61 and 63, respectively, to apply a preload force to open outward.

This preload force is applied by the stopper 62 to the levers 61 and 63.
The opening interval (angle) between the two ends is within a predetermined value of zero.

Next, when the locking rod 101 is pushed up, the locking rod 201
moves to the right via the levers 61 and 63 to lock the tripping device, but when the locking rod 101 is further pushed up, the distance between the levers 61 and 63 becomes smaller than θ, and the pressing force is removed from the locking rod. Give to 201.

As described above, this invention provides a biasing means between the first and second locking rods, and the biasing means directs the first locking rod to be inserted into the locking hole within a predetermined distance. Since the locking device is a drawer-type opening/closing device that biases the tripping device in the locking direction, when the first locking rod is pulled out from the locking hole, the locking rod pushes the biasing means in a predetermined direction. By reducing the spacing, it is possible to ensure the extraction and also to
The locking rod presses the movable lever of the tripping device to lock it and securely locks the lock, and even when the drawer-type opening/closing device is pulled out, the biasing means is reduced from a predetermined distance so that the second The locking rod presses and locks the movable lever of the tripping device to ensure locking.

[Brief explanation of drawings]

Figure 1 is a structural diagram of a conventional drawer-type switchgear, and Figure 2 is a structural diagram of a conventional drawer-type switchgear.
3, 4, and 5 are structural diagrams showing the operation of the main parts centering on the locking device of a conventional opening/closing device. FIG. 6 is an implementation of this invention. Structural diagram of the main parts centering on the locking device of a drawer-type opening/closing device showing an example, Fig. 7a, b,
c is a structural diagram of a biasing means of a locking device according to an embodiment of this invention, and FIGS. 8 and 9 are structural diagrams showing the operation of the main parts of the locking device according to an embodiment of this invention. Figure 10a
, b and FIG. 11 are structural diagrams showing other embodiments of the biasing means of the locking device of this invention. In the figure, A is a drawer type opening/closing device, B is a locking device, C is a tripping device, D is an operating mechanism, E is a fixed frame, 101, 10
2, 201 is a locking rod, 2°4 is a lever, 10 is a locking hole, 11 is a movable lever, 12 is a coil, 13 is a latch,
14 is a roller, 21 is a biasing means, 22 is a spring, 2
3 is a locking pin, and 24 is a stopper. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] The drawer is supported by a drawer-type opening/closing device housed in a fixed frame so that the drawer can be pushed in, and when the drawer-type opening/closing device is pushed in,
a first locking rod inserted and locked into the locking hole of the fixed frame, supported by the drawer-type opening/closing device, and provided opposite to the movable L/bar of the tripping device of the drawer-type opening/closing device; A second locking rod that presses and locks the movable lever is interposed between the first locking rod and the second locking rod, and moves the first locking rod in the direction of the locking hole. , the second locking rod is biased in a direction to press and lock the movable lever of the tripping device, and this biasing force is applied to the first locking rod when the lock is locked;
comprising biasing means acting within the spacing between the second locking rods;
When the first locking rod is pulled out and the drawer type opening/closing device is in a state where it can be pulled out, and in a state where the drawer type opening/closing device is pulled out, the biasing means is reduced from the predetermined interval, and the biasing means is The movable lever of the tripping device is pushed and locked by the second locking rod, and with the first locking rod inserted into the locking hole and locked, the biasing means maintains the predetermined interval. Locking and moving of a drawer-type opening/closing device, characterized in that the movable lever is unlocked by the second locking rod.