JPH01120406A - Cylinder - Google Patents

Abstract

PURPOSE:To dispense with a complicate sealing mechanism by slidably assembling a slider inside a guide member, and connecting a telescopic tube to both sides of the slider respectively. CONSTITUTION:A slider 2 is slidably assembled inside a guide member 1, and each one end of telescopic tubes 3, 4 is fixed to both sides of the slider 2, which is provided with a carrier bracket 7. Fluid pressed in the tubes 8, 4 therefore extends them as it slides the slider 2 to make the carrier bracket 7 move. Thus a complicate sealing mechanism can be dispensed with, and smooth sliding motion can be secured with less frictional resistance.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a rodless cylinder.

[Conventional technology]

A rodless cylinder is used because a cylinder with a piston rod connected to the piston requires space to install as long as the stroke thereof, and dust adhering to the piston rod can damage the piston rod seal.

[Problems to be Solved by the Invention] When the piston in the cylinder tube is moved by the fluid pressure that is press-fitted into the cylinder tube, the piston is interposed between the piston and the slider that is circumscribed to the cylinder tube, and The slider is slid by the movement of a slider fitted into the longitudinal crack, and as the slider moves, the crack is pushed open, and the slider is placed inside and outside the cylinder tube so as to cover the crack. Since the seal belt that is the main body is pushed open, frictional resistance increases,
There was a problem that prevented smooth sliding.

In addition, there is a problem that the complicated structure causes an increase in cost.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes a guide member, a slider slidably incorporated inside the guide member, one end side provided on both sides of the slider, and one end side provided at both ends of the guide member. a pair of telescoping tubes each having their other end connected to the end plate in an airtight manner; and a port provided in the end plate to communicate with the inside of the tube;
It consists of a carrier bracket located on the slider and placed outside the guide member, and a connecting member that connects the slider and carrier bracket by passing through a long hole provided between both ends of the guide member. .

[Effect]

When fluid is press-fitted from the port on one end plate, the tube on the fluid-pressing side is extended and the carrier bracket is slid together with the slider.

At this time, the tube on the side where fluid is not press-fitted is pushed back by the slider and contracts.

〔Example〕

In the figure, 1 is a guide member, and within this guide member 1 is provided a slider 2 that slides between both ends of the guide member 1.

Further, one end of the pair of telescopic tubes 3.4 is attached airtightly to both sides of the slider 20, and the other ends of the pair of telescopic tubes 3.4 are airtightly attached to end plates 5.6 provided at both ends of the guide member 1. .

Reference numeral 7 denotes a carrier bracket located on the slider 2 and placed on the outside of the guide member 1. It is connected to 2.

The above connecting member 9 is the carrier bracket 7 in the illustrated case.
Although bolts are screwed into the slider 2 from above, other methods may be used to connect the slider 2 and the carrier bracket 7 so that they run together.

In addition, both end plates 5.6 are provided with ports 10.11 that communicate with the inside of the tube 3.4, and when fluid is pressurized into one tube 3 from one port 10, the tube 3
, and slide the slider 2 (in the direction of the port 11). At this time, the other tube 4 is pushed back by the slider 2 and contracts, and the tube 4
The fluid inside is discharged from the other port 11.

Note that the guide member 1 may be made of a plurality of rods or the like arranged in a cylindrical shape other than the illustrated cylinder.

Further, the expandable tube 3.4 should be one that does not extend in the radial direction, and preferably has a bellows so that it can be smoothly retracted.

Further, although both ends of the tube 3 and 40 are attached in an airtight manner, as shown in the figure, they are fixed to the other side with adhesive, and then annular bands are overlapped and secured with screws, but other methods may be used.

〔effect〕

As described above, according to the cylinder according to the present invention, when fluid is pressurized into the tube from one port, the tube is extended while sliding the slider due to the fluid pressure, and the carrier bracket is caused to travel together with the slider. Since it is made of steel, there is no need for a complicated sealing mechanism, and smooth sliding can be ensured with less frictional resistance.

[Brief explanation of the drawing]

The drawings show an embodiment of the cylinder according to the present invention.
FIG. 1 is a plan view, and FIG. 2 is a longitudinal sectional side view of the same. 1... Guide member, 2... Slider,
3.4...Tube, 5.6...End plate, 7...Carrier bracket, 8...
Long hole, 9...Connection member, 10.11...
·port. Patent Applicant 1) Japanese Hearing Agent Kama 1) Sentence 2

Claims (1)

[Claims] A guide member, a slider slidably incorporated inside the guide member, one end of which is connected to both sides of the slider, and the other end of which is connected in an airtight manner to end plates provided at both ends of the guide member. A pair of telescopic tubes, a port provided on both end plates to communicate with the inside of the tube, a carrier bracket located on the slider portion and placed outside the guide member, and a port provided between both ends of the guide member. A cylinder consisting of a connecting member that connects a slider and a carrier bracket by passing through a long hole.