JPH0540629U - Brake built-in slider device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a slider device, the driving force for driving the slider and the braking force for holding the position can be set independently, and the position can be set even when the actuator is removed. Allows retention to be sustained. [Structure] The fixed frame 10 and the upper slider 14 are provided with braking surfaces 18 and 20, respectively, while the intermediate slider 1
2 has a pair of brake shoes 22 and 24 built therein, and these are connected to the urging force of the spring 28 and the cylinder 32.
The intermediate slider 1 is activated and deactivated by the force of
2 and the upper slider 14 are held in position or slidable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a slider device with a built-in brake.

[0002]

[Problems to be solved by conventional techniques and devices]

 A slider device in which a slider is slidably held by a holder is widely used in various fields.

In this slider device, it is often necessary to move the slider to a target position and then stop and hold the slider, that is, keep the brake applied.

However, in the conventional slider device, a brake mechanism for that purpose is not specially provided, and it is general to use the brake incorporated in the actuator for moving the slider as it is. ..

However, in this case, since the braking force is determined by the driving force of the slider, there is an inconvenience that the holding force (braking force) with respect to the slider is often insufficient.

For example, when the slider is moved, it is often moved in an empty state, that is, when nothing is placed on the slider. In this case, since the load applied to the slider is small, an actuator with a small driving force is used. However, on the other hand, if an object is placed on the slider at the positioning position, the load on the slider will increase, and the brakes and holding power of the small actuator will be insufficient. is there.

When such a slider is held at the stop position by using, for example, a drive cylinder or a motor brake, it is not only difficult to set the braking force independently of the actuator driving force. However, when the actuator is removed for maintenance work or adjustment of the actuator, the slider cannot be held in position.

[0008]

[Means for Solving the Problems]

 The device of the present invention has been devised to solve such a problem, and its gist is (a) a slider, (b) a holder for slidably holding the slider, and (c). A braking surface provided on one of the slider and the holder, (d) a brake shoe provided on the other, and (e) a toggle link provided on the arrangement side of the brake shoe and connected to the brake shoe. And (f) a pressing means for applying a force to the input part of the toggle link to press the brake shoe against the braking surface via the toggle link, and (g) the pressing part against the input part of the toggle link. Means for applying a force in the opposite direction to the means for releasing the braking action of the brake shoe.

[0009]

[Action and effect of the device]

 In the device of the present invention, when the force is applied to the input portion of the toggle link by the pressing means at the time when the slider is moved to the predetermined position, the brake shoe provided on one of the slider and the holding body is applied to the braking surface provided on the other When the slider and the holder are pressed against each other and the braking action is performed, the slider and the holder are fixed to each other.

That is, the brake is applied to the slider, and the slider is held under a predetermined force.

On the other hand, in this state, when the releasing means applies a force in the opposite direction to the input portion of the toggle link, the braking action is released and the slider becomes freely movable.

As described above, the present invention is one in which the toggle type braking means is built in the slider device itself.

According to the present invention, the driving force and the braking force for the slider can be set independently, and the braking force and the holding force for the slider can be increased while using a small-sized actuator.

Further, since the braking means is provided separately from the actuator, even when the braking means is removed for maintenance work or adjustment of the actuator, the slider can be surely moved to the predetermined position. It is possible to keep it.

In addition, since the present invention uses the toggle type link to apply the brake, the applied operating force is boosted to act on the slider, and therefore the force for breaking operation is reduced. It also has the advantage that

[0016]

【Example】

 Next, an embodiment of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, 10 is a fixed frame, 12 and 14 are an intermediate slider and an upper slider, respectively, and a guide cylinder (not shown) for these sliders 12 and 14 by a drive cylinder 16 (other actuators may be used). It is designed to be slidable in the left-right direction in the figure below a guide mechanism such as a ball bearing.

Inside the intermediate slider 12, a pair of brake shoes 22 and 24 are provided so as to face the braking surfaces 18 and 20 provided on the fixed frame 10 and the upper slider 14, respectively.

The pair of brake shoes 22 and 24 are relatively immovable in the moving direction of the intermediate slider 12 and movable in a direction perpendicular to the moving direction.

Both ends of a dogleg-shaped toggle link 26 are rotatably connected to the pair of brake shoes 22, 24.

Further, the intermediate slider 12 is provided with a spring 28 for applying a force to the intermediate portion of the toggle link 26, and the spring force of this spring 28 is exerted on the toggle link 26 via the pressing head 30. ing.

On the other hand, a cylinder 32 for releasing the brake is provided on the side opposite to the spring 28.

A piston 34 is built in the cylinder 32, and the air pressure is introduced from the port 36 into the cylinder 32 to push the piston 34 rightward in the figure, which causes the piston rod 38 to toggle. 26 is pushed rightward against the urging force of the spring 28 to release the brake by the brake shoe 24.

In the apparatus of this example, while the sliders 12 and 14 are driven by the drive cylinder 16 as an external device, when it is desired to hold the sliders 12 and 14 in position, the input to the toggle link 26 by the releasing cylinder 32 is performed. By releasing, the fixed frame 10, the intermediate slider 12, and the upper slider 14 can be fixed.

Except for the input to the toggle link 26 by the releasing cylinder 32, the pair of brake shoes 22 and 24 are pushed up and down by the pressing force of the spring 28, and the fixed frame 10 and the upper slider 14 are braked. It is pressed against the surfaces 18 and 20 and is in a state of being broken.

At this time, the input from the spring 28 is boosted by the toggle link 26 and applied to the brake shoe 24. Therefore, a large braking force can be applied with a small force.

On the other hand, when the sliders 12 and 14 are moved to the target positions, air pressure is guided to the cylinder 32 and the piston rod 38 is pressed against the input portion of the toggle link 26, the braking by the brake shoes 22 and 24 is released, The sliders 12 and 14 are in a freely movable state.

In the case of the device of this example, since the brake mechanism is provided inside the intermediate slider 12 which is originally an empty space, there is an advantage that the device is not particularly enlarged due to the built-in brake mechanism. ..

Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be configured in other forms. For example, in the above example, the pressing means and the releasing means are provided separately, but it is also possible to use a single driving means so that the pressing means and the releasing means are combined.

Further, in the above example, the slider is provided in two stages, but it is also possible to configure it in one stage.

In addition, the present invention can be configured in a form in which various modifications are made based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a slider device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the same device.

[Explanation of symbols]

10 Fixed Frame 12 Middle Slider 14 Upper Slider 22, 24 Brake Shoe 26 Toggle Link 28 Spring 32 Cylinder

Claims (1)

[Scope of utility model registration request] 1. A slider, (b) a holder for slidably holding the slider, (c) a braking surface provided on one of the slider and the holder, and (d) a brake provided on the other. A shoe, and (e) a toggle link provided on the side where the brake shoe is arranged and connected to the brake shoe, and (f) a force is applied to the input portion of the toggle link to force the brake shoe through the toggle link. A pressing means for pressing the braking surface, and (g) a releasing means for releasing a braking action by the brake shoe by applying a force in the opposite direction to the pressing means to the input portion of the toggle link. The built-in brake slider device.