JPH0647705U - Device for fixing dustproof band of rodless cylinder - Google Patents

Abstract

(57) [Summary] [Purpose] An output groove is engraved in the axial direction of the peripheral wall of the cylinder,
An output arm extending from a piston slidably provided in the cylinder is connected to a slide member outside the cylinder through the output groove, and a central portion is guided by a guide roller in the slide member and a dustproof band covering the output groove. In a rodless cylinder having both ends fixed to the outer peripheral surface of the cylinder, it is an object to improve the cylinder operation reliability by increasing the fixing strength of the fixed end of the dustproof band. [Structure] An output groove dustproof band fixing device for a rodless cylinder in which both ends of a dustproof band are sandwiched between bent clamp plates bent at right angles to a clamp plate and screwed to the outer surface of the cylinder with screws.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for fixing an output groove dustproof band of a rodless cylinder.

[0002]

[Prior art]

 As a conventional rodless cylinder, there is one disclosed in JP-A-62-177304, as shown in FIG. That is, a piston 102 is slidably provided in a cylinder 101, an axial output groove 106 is formed in an upper portion of a peripheral wall of the cylinder 101, and an output arm 107 extending from the piston 102 is output from the output groove 106 to the cylinder 101. The output arm 107 is projected outward and is connected to a slide member 108 that slides on the outer surface of the cylinder 101.

The dustproof band 126 and the pressure band 100, which cover the output groove 106 of the cylinder 102, pass through the output arm 107 at their central portions and cover the output groove 106, and are pressed by wedge-shaped clamp plates 130 at their ends. It is screwed. Since the dustproof band 126 is pulled in the moving direction of the slide member 108 by the force received when bending in the slide member 108, it is fixed at both ends by the wedge-shaped groove 131, the wedge-shaped clamp plate 130 and the screw 132. .

[0004]

[Problems to be solved by the device]

 In the conventional example, the dustproof band 126 is held by a clamp plate 130 of another pressing member with a tightening frictional force, and when the dustproof band 126 starts to slide, the clamp plate 130 increases the biting frictional force. In the holding structure of the dustproof band 126 by this frictional force, the frictional force is reduced due to the variation of the tightening force, the tightening surface roughness, and the adhesion of oil, and the dustproof bunt 126 is tightened to remove the frictional force. As a result, the cylinder will be bent, deformed and damaged, and the cylinder will become inoperable.

[0005]

[Means for Solving the Problems]

 Therefore, in view of the above circumstances, the present invention engraves an output groove in the axial direction of the peripheral wall of the cylinder in order to improve the cylinder operation reliability by increasing the fixing strength of the fixed end of the dustproof band. An output arm extending from a piston slidably provided inside is connected to a slide member outside the cylinder through the output groove, and the center portion is guided by guide rollers inside the slide member and both ends of a dustproof belt covering the output groove. In a rodless cylinder in which is fixed to the outer peripheral surface of the cylinder, both ends of the dustproof belt are clamped by bent clamp plates bent at a right angle to the clamp plate and screwed to the outer surface of the cylinder with screws. It is a groove dustproof band fixing device.

[0006]

[Action]

 Since the end of the dustproof band is sandwiched between the clamp plate and the bent clamp plate and screwed together with screws, the dustproof band will not come off against the increase in frictional tension due to the rough surface of the slide member running out of oil. The durability is improved.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to specific embodiments shown in the accompanying drawings. First, a rodless cylinder is shown in FIGS. 1, 2 and 3. A piston 2 is slidably provided in a cylinder 1, a cylinder head 4 accommodating a pulley 3 is screwed to both ends of the piston 2 with a bolt 5, and an axial output groove 6 is formed on an upper portion of a peripheral wall of the cylinder 1. Then, the output arm 7 extending from the piston 2 is projected from the output groove 6 to the outside of the cylinder 1, and the output arm 7 is connected to the slide member 8 that slides on the outer surface of the cylinder 1.

The pulley 3 is rotatably provided on a pulley shaft 12 via a bearing 11. Both ends of the pulley shaft 12 are supported on both side walls 14 of a bracket 13 made of sheet metal, and both ends of the pulley shaft 12 are connected to a vertical wall 60. An adjusting bolt 18 protruding from the cylinder head 4 is inserted into a mounting piece 17 which is supported by the long hole 15 and which is erected from a base piece 16 of the bracket 13, and is screwed with a nut 19. Reference numeral 20 is a retaining ring for the pulley shaft 12.

Further, the slide member 8 is provided with an inverted V-shaped guide groove 21 engraved on the upper surface of the cylinder 2 so as to be slidable, and the slide member 8 has a guide roller 22 inside and an elastic slide at the end. The cover member 24 provided with the scraper 23 is fitted into the guide groove 9 formed on the inner surface of the upper portion of the slide member 8 and screwed with the screw 25. The dustproof band 26 covering the output groove 6 of the cylinder 2 is clamped at its end by a clamp plate 35 and a bent clamp plate 27, and screwed onto the upper surface of the cylinder 2 with a screw 28.

One end of the cable 29 is connected to the piston 2, the cable 29 is wound around the pulley 3, and the other end is connected to the output arm 7. The cover plate 31 covers the pulley 3 and is attached to the cylinder head 4 with screws 32. When the piston 2 slides, its driving force is transmitted to the cable 29, is transmitted to the slide member 8 via the output arm 7, and the slide member 8 slides on the outer surface of the cylinder 1. The slide member 8 is provided with a screw hole 30 for mounting a load.

The dustproof band 26 is guided by the guide roller 22 of the cover member 24 and the guide roller 33 attached to the slide member 8. Next, the fixing device of the dustproof band 26 of the present invention will be described. As shown in FIG. 4, the end portion of the dustproof band 26 is clamped by the flat clamp plate 35 and the bent clamp plate 27 having the bent piece 39 bent at a right angle, and the upper surface of the cylinder 1 is fixed by the screw 28. Screw on. The cylinder head 4 is adjacent to the cylinder 1.

As shown in FIG. 5, the clamp plate 35 is a flat plate having a rectangular shape in plan view, and has a through hole 38 through which the screw 28 is inserted. Further, the bending clamp plate 27 has one side bent at a right angle to form a bending piece 39 to bend the dustproof band 26, and two through holes 40 for the screws 28 are formed. As shown in FIG. 4, the end portion of the dustproof band 26 is located between the flat clamp plate 35 and the bent clamp plate 27, and the screw 28 is inserted therethrough.

When the screw 28 is tightened from the state shown in FIG. 4, the dustproof band 26 is bent by the bending piece 39 of the bending clamp plate 27, and a step 41 is formed between the dust plate 26 and the clamp plate 35 as shown in FIG. It is formed and sandwiched between the clamp plate 35 and the bent clamp plate 27. By forming the step portion 41 on the dustproof band 26, the strength with respect to the tension on the dustproof band 26 due to the operation of the cylinder 1 can be increased as compared with the case where it is simply tightened. Further, even if the tightening force of the screw 28 is loosened, it does not come off immediately because there is a margin for catching by the step portion 41.

[0014]

[Effect of device]

 As described above, according to the present invention, the output groove is formed in the axial direction of the peripheral wall of the cylinder, and the output arm extending from the piston slidably provided in the cylinder is passed through the output groove to the slide member outside the cylinder. In a rodless cylinder in which both ends of the dustproof band that are connected and guided by the guide rollers in the slide member and that cover the output groove are fixed to the outer peripheral surface of the cylinder, both ends of the dustproof band are bent at a right angle to the clamp plate. This is a dustless band fixing device for the output groove of a rodless cylinder that is clamped by a bent clamp plate and screwed to the outer surface of the cylinder with a screw, so as to reduce frictional tension due to running out of oil on the slide member and surface roughness. Even if the dustproof band does not come off, the durability is improved.

Further, according to the present invention, it suffices to tighten the screw from the state shown in FIG. 4, it is not necessary to tighten the screw with a tight torque, and the assembly is easy. Further, in the present invention, since the step is formed in the dustproof band by tightening it from the state shown in FIG. 4, it is not necessary to bend the dustproof band in the correct position in advance, and the problem of the conventional example can be achieved at a small cost. Can be solved.

[Brief description of drawings]

FIG. 1 is a front view in which a half of a rodless cylinder is sectioned.

FIG. 2 is a plan view in which a part of FIG. 1 is sectioned.

FIG. 3 is a side view of FIG.

FIG. 4 is a vertical cross-sectional view of a fixing portion at an end portion of the dustproof band before tightening.

FIG. 5 is a plan view and a side view of a clamp plate.

FIG. 6 is a two-sided view of a bent clamp plate including a flat surface and a side surface.

FIG. 7 is a vertical cross-sectional view showing a fixed state of the end portion of the dustproof band.

FIG. 8 is a vertical sectional view showing a conventional dustproof band fixing device of a rodless cylinder.

[Explanation of symbols]

 1 ... Cylinder 6 ... Output groove 2 ... Piston 7 ... Output arm 8 ... Slide member 22/33 ... Guide roller 16 ... Dustproof band 35 ... Clamp plate 27 ... Bending clamp plate 28 ... Screw

Claims (1)

[Scope of utility model registration request] 1. An output groove is formed in an axial direction of a peripheral wall of a cylinder, and an output arm extending from a piston slidably provided in the cylinder is connected to a slide member outside the cylinder through the output groove, and a central portion is provided. In a rodless cylinder in which both ends of the dustproof band covering the output groove are fixed to the outer peripheral surface of the cylinder by bending the guide portion inside the slide member, the bent clamp plate is bent at right angles to the clamp plate. An output groove dustproof band fixing device for rodless cylinders that is clamped by and screwed to the outer surface of the cylinder with screws.