JPH0547599U - Booster - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to obtain a large stroke with a small pressing stroke and to obtain a uniform large force. [Structure] A slide guide having ratchet teeth formed on at least two side surfaces, and two sliders are slidably arranged in the slide guide so as to be in series with respect to the moving direction. A stop lever having a claw portion capable of engaging with each ratchet tooth is rotatably attached, and the stop levers corresponding to the respective ratchet teeth are connected by a link member, and the stop lever and the ratchet tooth Since the pressing device for releasing the engagement is arranged corresponding to each stop lever, the two sliders are connected by the crank mechanism.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for performing compression (pressing), carrying heavy objects (jacks for lifting a vehicle body), etc.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 5, a linear moving body 103 having a rack 102 formed above a frame 101 and a rotary gear 104 meshing with the linear moving body 103 are attached to the rotary gear 104. A hand press equipped with -105 is known.

However, in this hand press machine, in order to perform strong work, the pressing lever 105 must be lengthened and the ratio of the lengths of the rotary gear 104 and the pressing lever 105 must be increased, which is not enough. There was a limit.

Therefore, a crank lever type hand press machine as shown in FIGS. 6 and 7 has been devised. In other words, the straight-moving body 103 is operated by the toggle mechanism that combines the L-shaped pressing lever 106 and the link rod 107 to obtain a strong force with a small pressing rotation.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned prior art, the work thrust changes within the moving region due to the crank mechanism. In other words, as shown in Fig. 7, the area where strong work thrust is obtained is only at the position where the toggle effect occurs, that is, the lever is between D and E, and the work thrust is reduced between A and B and D. There was a problem.

[0006]

The present invention is intended to solve the above problems, and a slide guide having ratchet teeth formed on at least two side surfaces, and two sliders in the slide guide. The sliders are slidably arranged in series with respect to each other, and the stop levers having the claw portions capable of engaging with the respective ratchet teeth are rotatably attached to the two sliders, and the respective ratchets are attached. The stop levers corresponding to the teeth are respectively connected by the link members, and the pressing device for releasing the engagement between the stop lever and the ratchet teeth is arranged corresponding to each stop lever. The feature is that the sliders are connected by a crank mechanism.

[0007]

【Example】

 Next, one embodiment of the present invention shown in FIGS. 1 to 4 will be described in detail. Reference numeral 1 is a slide guide, and ratchet teeth 2 and 3 are formed on two surfaces facing each other. Two sliders (first slider 4 and second slider 5) are slidably fitted on the slide guide 1 in a straight line. An L-shaped crank 6 is rotatably and pivotally attached to the first slider 4, and one end of the L-shaped crank 6 is attached to a cylinder rod 8 of an air cylinder 7 attached to the first slider 4 via a bracket 9. Are pivotally connected.

On the other hand, the other end of the L-shaped crank 6 is rotatably attached to a link rod 10 rotatably attached to the second slider 5.

Further, inside the first slider 4 and the second slider 5, there are claws 11 and 12 that engage with the ratchet teeth 2, and claws 13 and 14 that similarly engage with the ratchet teeth 3, respectively. It is rotatably attached via -17 and 18. Further, the stopper levers 17 and 18 are for releasing the engagement between the elastic members 19, 20, 21 and 22 for engaging the ratchet teeth 2 and 3 with the ratchet teeth 2 and 3 at all times. The cylinders 23, 24, 25 and 26 are arranged.

The stop levers 15 and 16 and 17 and 18 are connected by connecting members 29 and 30 in which elongated holes 27 and 28 are formed.

Next, the operation will be described. A case where the sliders 4 and 5 are moved to the right will be described with reference to FIG. First, the cylinders 23 and 24 are first retracted (retracted) so that the pawls 11 and 12 are engaged with the ratchet teeth 2, and the cylinders 25 and 26 are projected so that the pawls 13 and 14 and the ratchet teeth 3 are separated. Disengage.

In the above state, when the rod 8 of the air cylinder 7 is projected and the L-shaped crank 6 is pressed, the pawl 11 engaged with the first slider 4 is pressed to the left, but the ratchet teeth 2 Since it is engaged with and does not move, the pressing force is transmitted to the second slider 5 via the link rod 10, and the claw 12 of the second slider 5 moves to the right along the ratchet teeth 2.

Next, when the pressing of the L-shaped crank 6 is released and the cylinder rod 8 is retracted, this time the claw 12 is pushed to the left and the ratchet teeth 2 are engaged, and the second slider 5 Does not move to the left, but the pawl 11 engaged with the first slider 4 moves to the right along the ratchet teeth 2. By repeating this operation, the sliders 4 and 5 gradually move to the right.

To move the sliders 4 and 5 to the left, the cylinders 25 and 26 are retracted, the pawls 13 and 14 are engaged with the ratchet teeth 3, and the cylinders 23 and 24 are projected so that the pawls 11 and 14. The engagement between 12 and the ratchet tooth 2 is released. The following operation is the same as the above-mentioned operation, and therefore its explanation is omitted.

FIG. 3 shows a case where the present invention is attached to the tool shaft of a SCARA type robot. A large stroke can be obtained with a small stroke (small air cylinder), and a large force can be obtained. The tool shaft unit (the tip of the arm) can be made smaller because it can be operated.

FIG. 4 shows an example in which the present invention is placed on a linear guide and a heavy object is conveyed. Even in this case, a heavy load can be transported with a small device.

[0017]

[Effect of the device]

 According to the present invention, a slide guide having ratchet teeth formed on at least two side surfaces and two sliders are slidably arranged in series in the slide guide so as to be in series with each other. A stop lever having a claw portion capable of engaging with each of the ratchet teeth is rotatably attached, and the stop levers corresponding to the ratchet teeth are connected to each other by link members, and the stop lever and the ratchet teeth are also connected. A pressing device for releasing the engagement with is arranged corresponding to each stop lever. Since the two sliders are linked by the crank mechanism, a large pressing stroke can be achieved with a small pressing stroke. In addition, it is possible to obtain a uniform and large force with a small pressing stroke.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between the slide guide of FIG. 1, a claw of a slider, and an L-shaped crank.

FIG. 3 is a front view of the present invention applied to a SCARA robot.

FIG. 4 is a front view in which the present invention is applied to a heavy load carrying device.

FIG. 5 is a front cross-sectional view of a first comparative example of a conventional device.

FIG. 6 is a front sectional view of a second comparative example of a conventional device.

FIG. 7 is a diagram showing the powerful work area of FIG. 6;

[Explanation of symbols]

 1 Slide Guide 2 Ratchet Tooth 3 Ratchet Tooth 4 First Slider 5 Second Slider 6 L-type Crank 7 Air Cylinder 8 Cylinder Rod 10 Link Rod 11 Claw 12 Claw 13 Claw 14 Claw 17 Stop Lever 18 Stop Lever 19 Resilient Member 20 elastic member 21 elastic member 22 elastic member

Claims (1)

[Scope of utility model registration request] 1. A slide guide having ratchet teeth formed on at least two side surfaces, and two slide guides.
A plurality of sliders are slidably arranged in series with respect to the moving direction, and a stop lever having a claw portion capable of engaging with each of the ratchet teeth is rotatably attached to the two sliders. While connecting the stop levers corresponding to each ratchet tooth by link members,
A booster characterized in that a pressing device for releasing the engagement between the stop lever and the ratchet teeth is arranged corresponding to each stop lever, and the two sliders are connected by a crank mechanism.