JP3237820B2 - Cylinder intermediate support - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a longitudinal middle portion of a cylinder tube which is engaged with a mounting groove provided with an axial sensor bracket, an intermediate support and the like provided on the outer periphery of a cylinder tube and mounted on a member to be mounted. To an intermediate support for a cylinder that supports the cylinder on an attached member.

[0002]

2. Description of the Related Art In a conventional cylinder, particularly a rodless cylinder, when its length in the longitudinal direction is long, a cylinder tube may be bent only by receiving an external load applied to the cylinder at both ends. In order to solve this, there is an intermediate support of a cylinder that supports a longitudinal intermediate portion of a cylinder tube as shown in FIG. The intermediate support 30 includes a side elected support 31 that wraps a cylinder barrel (cylinder tube) 2 having a circular outer periphery from a side opposite to the piston mount (external moving body) 5,
Left and right support bars 32, 32 engaged with the opening side of the side elected support 31, screws 34, 34 screwed into the side elected support 31 and tightening the support bars 32, 32 toward the cylinder barrel 2; The foot bar 35 is fixed to the mounted member 20 in a state of being engaged with the side elected support 31 on the side opposite to the opening of the side elected support 31. The intermediate support 30 is mounted at an appropriate position in the axial direction of the cylinder barrel 2, and the intermediate support 30 is mounted on the mounting surface 20 </ b> A of the vertical mounting member 20 with the mounting screw 25, so that the cylinder 20 is attached to the mounting member 20. Support the longitudinal middle part. In the technique disclosed in Japanese Utility Model Laid-Open Publication No. 61-193204 as another intermediate support, two adjacent long grooves (mounting grooves) provided directly on the outer peripheral surface of a cylinder tube (cylinder barrel) are provided with supporters (intermediate supports). There is also a type in which a supporter is attached to a member to be attached with an attachment screw to support an intermediate portion of the cylinder tube.

[0003]

In the above, the number of parts of the intermediate support for fixing the cylinder barrel having a circular outer periphery to the member to be mounted is large and expensive. In addition, when the screws are tightened in spite of the heavy weight of the intermediate support itself, a bending moment acts on the side elected support, so that the side elected support tends to spread (no rigidity). In addition, since the two intermediate supports are not connected to each other, simply fitting each of the intermediate supports into the mounting groove easily releases the intermediate support from the mounting groove. For this reason, when the operator supports the cylinder tube with the intermediate support, handling is inconvenient, for example, the cylinder barrel and the intermediate support cannot be assembled in advance. An object of the present invention is to reduce the number of parts of an intermediate support attached to a cylinder having a circular outer periphery and to reduce the cost.
Another object of the present invention is to provide an intermediate support that is easy to handle when mounted on a member to be mounted by assembling the cylinder tube and the intermediate support irremovably and assembling them in advance.

[0004]

In order to solve the above-mentioned problems,
In the intermediate support of the cylinder of the present application, a plurality of mounting grooves are provided along the length of the cylinder tube, and the locking portions of the pair of intermediate supports are engaged with the mounting grooves to cover these intermediate supports. In the intermediate support of the cylinder, which is attached to the mounting member and supports the longitudinal intermediate portion of the cylinder tube, each intermediate support can be disengaged from the axial direction with their locking portions engaged with the mounting grooves,
In the engaged state, there is provided a complementary engaging portion that couples the pair of intermediate supports and the cylinder tube so that they cannot be detached from each other.

A plurality of mounting grooves are provided along the length of the cylinder tube, and the locking grooves of a pair of intermediate supports are engaged with the mounting grooves, and these intermediate supports are attached to the member to be mounted. In the intermediate support of the cylinder which is mounted and supports the longitudinal middle portion of the cylinder tube, the mounting groove is a hook-shaped mounting groove having a hook-like cross-sectional shape provided with a locked portion on the groove edge, and The locking portion is a hook-shaped locking portion that can be locked in the hook-shaped mounting groove, and each intermediate support is provided with a complementary engaging portion that can be disengaged from each other from the axial direction and abuts against the outer peripheral surface of the cylinder tube. A possible contact surface is provided, and in a state in which the hook-shaped locking portion of each intermediate support is engaged with the hook-shaped mounting groove and the engaging portions are engaged with each other, the pair of intermediate supports and the cylinder tube are connected to each other. Irreversibly The external load acting on Sunda tubes were configured to be carried by a hook-shaped locking portion and the abutment surface.

Each of the engaging portions of the intermediate support is a concave / convex engaging portion which can be engaged and disengaged from each other, and the cylinder to which the intermediate support is attached moves along the length of a cylinder tube having a circular outer periphery. A rodless cylinder having an external moving body at a predetermined position on the circumference of a cylinder tube, wherein a mounting groove is formed on the outer peripheral surface of the cylinder tube, and the mounting groove is formed between the center of the external moving body in the width direction and the center of the tube. The pair of intermediate supports are provided symmetrically on both sides of a center plane including the pair of intermediate supports, and in a state in which each locking portion is engaged with any one pair of the pair of mounting grooves, the external moving body is The intermediate support and the cylinder are coupled so that they can take any of the upper and lower directions.

The pair of intermediate supports are upper and lower intermediate supports. Each intermediate support has a locking portion at a circumferential end thereof, and an arc surface along the outer circumference of the cylinder tube extends from the locking portion. Extending, its arc surface acts as an abutment surface, an engagement portion is provided at a portion of the pair of intermediate supports that are circumferentially opposed to each other, and a mounting surface to a member to be mounted is provided that is parallel to the center surface. I have. Further, the mounting groove is also used as a mounting groove of a sensor bracket for holding a sensor for detecting a longitudinal position of the piston inside the cylinder tube.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an intermediate support for a cylinder according to the present invention will be described with reference to FIGS. Reference numeral 1 denotes a rodless cylinder, whose structure is substantially the same as that disclosed in Japanese Utility Model Publication No. 5-29362. The cylinder tube (cylinder barrel) 2 of the rodless cylinder 1 is formed in a cylindrical shape, and a cylinder chamber 2b is formed therein. A piston 3 provided with a magnet (not shown) for detecting a piston position is fitted in the cylinder chamber 2b so as to be slidable in the longitudinal direction, and is provided integrally with the piston 3 at a predetermined position in the circumferential direction of the barrel wall. A piston mount 5 outside the cylinder tube 2 is connected to a piston yoke 4 passing through the slit 3A.
Is reciprocated at a predetermined stroke in the axial direction in accordance with the sliding of. Outer peripheral surface 2a of cylinder tube 2
In the width direction of the piston mount 5 (left-right direction in FIG. 2)
A pair of mounting grooves 6 and 7 are formed directly on the left and right sides of a center plane P including the center and the center of the cylinder tube 2.

Each of the mounting grooves 6 and 7 is provided in the cylinder tube 2.
And a mounting bracket 6 for mounting and holding a sensor 8 for detecting a stroke position of the piston 3 at a required position in the axial direction between the left and right mounting grooves 6 and the tube outer peripheral surface 2a. In this case, the sensor 8 is provided at a substantially central portion of the cylinder tube 2 at a position where the magnet provided on the piston 3 can be detected. Each of the mounting grooves 6 and 7 has such a depth that the strength of the cylinder tube 2 with respect to the internal pressure is not reduced, and the cross-sectional shape thereof is a circular arc surface 14 of a pair of intermediate supports 12 and 13 described later.
Hooks are bent to the opposite side (outside of the piston mount 5 in FIG. 1) from the outer peripheral surface 2a where the pads 15, 16, 17 abut, and the mounting grooves 6, 7 on the left and right approach each other as they become deeper. It is a mounting groove, and the groove edges of the hook-shaped mounting grooves 6 and 7 are locked parts 10 and 11.

Next, the intermediate supports 12, 13 will be described. The upper and lower intermediate supports 12, 13 are integrally formed with hook-shaped locking portions 18, 19, respectively, which can be locked in the hook-shaped mounting grooves 6, 7 at their circumferential ends. Part 18
Arc surfaces 14, 15 along the tube outer peripheral surface 2a from
Also, arcuate surfaces 16 and 17 extending from the hook-shaped locking portion 19 along the outer peripheral surface 2a of the tube are provided.
Reference numerals 5, 16, and 17 function as contact surfaces capable of contacting the tube outer peripheral surface 2a. The intermediate support 12 has an arc surface 14,1
5, a mounting surface 21 is provided on the opposite side to the member to be mounted 20, and the intermediate support 13 has circular arc surfaces 16, 17.
A mounting surface 22 is provided on the opposite side to the member to be mounted 20, and the mounting surfaces 21 and 22 are provided on the intermediate supports 12 and 1.
3 is parallel to the center plane P when attached to the cylinder tube 2. Each of the intermediate supports 12 and 13 has a complementary engaging portion at a portion opposed in the circumferential direction, and the engaging portion of the intermediate support 12 has a hook-shaped recess integrally formed on the hook-shaped engaging portion 18 side. The engaging portion 23 is an engaging portion of the intermediate support 13. The engaging portion of the intermediate support 13 is a hook-shaped convex engaging portion 24 integrally formed on the side opposite to the hook-shaped engaging portion 19, and the hook-shaped concave engaging portion 23 and the hook-shaped convex Engagement part 24
Can be mutually disengaged from the axial direction.

Next, the mounting member 2 of the cylinder tube 2
The attachment to the zero will be described. First, the arc surfaces 14, 15
Does not come into contact with the tube outer peripheral surface 2a, and the mounting surface 21
(In a state in which the intermediate support 12 is rotated about the hook-shaped locking portion 18 in the opposite direction to the arc surface 14), and the intermediate support 12 is inserted into the hook-shaped mounting groove 6 on one side (the left side in FIG. 2). 12, the tip of the hook-shaped locking portion 18 is locked in the radial direction of the cylinder tube 2, and the intermediate support 12 is moved toward the arcuate surface 14 with the hook-shaped mounting groove 6 and the hook-shaped locking portion 18 engaged. The intermediate support 12 is rotated until the arcuate surfaces 14 and 15 come into contact with the surface 2a to hold the intermediate support 12 against the tube outer peripheral surface 2a. Similarly, the intermediate support 13 is held in the hook-shaped mounting groove 7 on one side at a position shifted from the intermediate support 12 in the axial direction.

Next, in this state, the intermediate supports 12 and 13 are moved toward each other along the axial direction of the cylinder tube 2 so that the hook-shaped concave engaging portions 23 and the hook-shaped convex engaging portions 24 are engaged. And unite. At this time, the intermediate supports 12, 13
The arcuate surfaces 14, 15, 16, 17 function as guide surfaces for axial movement of the cylinder tube. When the hook-shaped engaging portions 18 and 19 of the intermediate supports 12 and 13 are engaged with the hook-shaped mounting grooves 6 and 7 and the engaging portions 23 and 24 are engaged with each other, the intermediate supports 12 and 13 and the cylinder tube 2 are engaged.
Are unable to move outward in the circumferential direction and the radial direction and are irremovably connected to each other.
Is in a state where it can move in the axial direction with respect to the cylinder tube 2. In this state, the piston tube 5 is turned downward by L-shaped brackets (cylinder fixing members) 28, 29 screwed to end caps 26, 27 at both ends of the cylinder tube 2, and the cylinder tube 2 is placed on the left side of the center plane P in FIG. The mounting surfaces 21 and 22 which are fixed to the mounting member 20 and are parallel to the center plane P are brought into contact with the mounted member 20 and fastened to the mounted member 20 with mounting screws 25. Thus, the rodless cylinder 1 has two longitudinal ends. The middle part is supported. During this mounting operation, the intermediate supports 12, 13 do not come off from the cylinder tube 2 as described above, so that the handling is easy,
Installation becomes easy. A sensor bracket 9 can be attached to the hook-shaped attachment groove 6 on the other side (the right side in FIG. 2) with respect to the center plane P as necessary.

As shown in FIG. 2, when the rodless cylinder 1 is mounted on the member to be mounted 20 on the side with the piston mount 5 down, when a downward load W1 acts on the piston mount 5, The load W1 is mainly received by the hook-shaped engaging portion 18 and the arcuate surface 16, and when a moment M1 in the direction of the attached member 20 acts, the moment M1 is mainly transmitted by the hook-shaped engaging portion 19 and the arcuate surface 14. Alternatively, when a moment M2 acts in a direction away from the mounted member 20 and is received by the arc surface 15, this moment M
2 is received at least by the hook-shaped locking portion 18 and the arcuate surface 17, and thus the external load acting on the piston mount 5 is carried by the intermediate supports 12 and 13. Deflection is prevented, and smooth movement can be performed.

When the rodless cylinder 1 is mounted on the side member 20 with the piston mount 5 turned up as shown in FIG. 3, when a downward load W2 acts on the piston mount 5, The load W2 at this time is particularly received by the hook-shaped locking portion 19 and the arcuate surface 17, and if the load W2 is not received by the hook-shaped locking portion 19 and the arcuate surface 17, deflection occurs, and further, the hook-shaped locking portion 18 and the arc are formed. When the moment M3 in the direction of the mounting member 20 acts on the mounting member 20, the moment M3 is received by the hook-shaped locking portion 19 and the arc surface 14 or the arc surface 15, and the mounting member 20 When the moment M4 acts in the direction away from the center support 12, this moment M4 is received by the hook-shaped locking portion 18 and the arcuate surface 17, so that an external load acting on the piston mount 5 is applied to the intermediate support 12, Because carried by 3, it is possible to prevent the tube 2 is bent in the longitudinal middle portion of the tube 2 may be carried out smoothly moved.

Further, in addition to the above embodiment, the shape of the engaging portion of the pair of intermediate supports may be a T-shaped convex portion in which one can be engaged with the T groove and the other can be engaged with the T groove, or one of which is outward. A concave groove (e.g., a groove) that becomes narrower as it goes, and the other part that can be engaged with this groove is a convex part that becomes wider as it goes outward, or one is a concave groove having a rectangular cross section and the other is a rectangular groove. The intermediate support, such as a convex portion, may have any complementary shape such that the intermediate support cannot be dropped from the cylinder tube when the pair of intermediate supports are attached to the cylinder tube and the engaging portions are engaged with each other. In these intermediate supports, the engaging portions are formed over the entire length in the axial direction of the cylinder tube, so that they can be formed by extrusion and then cut to an appropriate length, which is easy and inexpensive to manufacture.

Further, in addition to the above embodiment, one of the intermediate supports may be provided with a concave groove perpendicular to the cylinder tube axial direction, and the other may be provided with a convex portion perpendicular to the cylinder tube axial direction. Of course, in the above-described embodiment, the intermediate support is mounted on the side of the piston mount. However, the intermediate support may be mounted on the left and right mounting grooves so as to be opposite to the piston mount, and the cylinder tube may be fixed to the member to be mounted. . The shape of the cylinder tube is not limited to a round shape but can be changed as appropriate. Also, the mounting grooves may be oriented in different directions, and may be T-shaped.

[0017]

As described above, according to the present invention, the intermediate support is mounted in the mounting groove, and the engaging portions of the pair of intermediate supports are engaged with each other from the axial direction to separate the intermediate support and the cylinder tube. Since the connection is impossible, the intermediate support can be attached to the cylinder tube, and handling at the time of attachment to the member to be attached becomes easy. Also, especially in the middle support of a cylinder with a circular outer circumference,
The number of parts is smaller and lighter than in the past, and the cost is low.
Also, the mounting groove is also used for mounting the sensor bracket and the intermediate support, so there is no need to provide a dedicated groove for each,
It is suitable. Further, since the external moving body can be supported upward or downward by using the same intermediate support, the mounting manner can be diversified by a kind of intermediate support, and it can meet various user needs.

[Brief description of the drawings]

FIG. 1 is a side view showing attachment of an intermediate support.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view in which a piston mount is mounted on the upper side.

FIG. 4 is a view showing attachment of a conventional intermediate support.

[Explanation of symbols]

 2 Cylinder tube 2a Tube outer peripheral surface 5 Piston mount (external moving body) 6,7 Hook-shaped mounting groove 8 Sensor 9 Sensor bracket 10,11 Locked part 12,13 Intermediate support 14,15,16,17 18, 19 Locking portion 20 Member to be mounted 21, 22 Mounting surface 23 Hook-shaped concave engaging portion 24 Hook-shaped convex engaging portion P Central plane

Claims (6)

(57) [Claims] 1. A plurality of mounting grooves are provided along the length of a cylinder tube, and the locking grooves of a pair of intermediate supports are engaged with the mounting grooves, and these intermediate supports are attached to a member to be mounted. In the intermediate support of the cylinder, which is attached and supports the longitudinal intermediate portion of the cylinder tube, each of the intermediate supports can be disengaged from the axial direction in a state where their locking portions are engaged with the mounting grooves. An intermediate support for a cylinder, wherein a complementary engagement portion is provided for connecting the pair of intermediate supports and the cylinder tube so that they cannot be detached from each other in a state. 2. A plurality of mounting grooves are provided along the length of the cylinder tube, and engaging portions of a pair of intermediate supports are engaged with the mounting grooves, and these intermediate supports are attached to a member to be mounted. In the intermediate support of the cylinder which is mounted and supports the longitudinal middle portion of the cylinder tube, the mounting groove is a hook-shaped mounting groove having a hook-like cross-sectional shape provided with a locked portion on the groove edge, and The locking portion is a hook-shaped locking portion that can be locked in the hook-shaped mounting groove, and each intermediate support is provided with a complementary engaging portion that can be disengaged from each other from the axial direction and abuts against the outer peripheral surface of the cylinder tube. A possible contact surface is provided, and in a state in which the hook-shaped locking portion of each intermediate support is engaged with the hook-shaped mounting groove and the engaging portions are engaged with each other, the pair of intermediate supports and the cylinder tube are connected to each other. Non-removable coupling and cylinder An intermediate support for a cylinder configured so that an external load acting on the tube can be carried by the hook-shaped locking portion and the contact surface. 3. The intermediate support according to claim 1, wherein each of the engaging portions is a concave / convex engaging portion which can be disengaged from each other.
Or the intermediate support of the cylinder described in 2. 4. The cylinder to which the intermediate support is attached is a rodless cylinder having an external moving body at a predetermined position on the cylinder tube circumference, the external moving body moving along the length of the cylinder tube having a circular outer circumference. A mounting groove is formed on the outer peripheral surface of the cylinder tube, and the mounting groove is provided symmetrically on both sides of a center plane including the center in the width direction of the external moving body and the center of the tube. In a state where the locking portion is engaged with any one of the pair of mounting grooves, the intermediate support and the cylinder are coupled so that the external moving body can take any of the upper and lower directions. The intermediate support for a cylinder according to claim 3, wherein the support is provided. 5. The pair of intermediate supports are upper and lower intermediate supports, each of which has a locking portion at a circumferential end thereof, and an arc extending from the locking portion along the outer periphery of the cylinder tube. Surface is extended, the arc surface thereof acts as a contact surface, an engagement portion is provided at a portion of the pair of intermediate supports facing in the circumferential direction, and a mounting surface to a member to be mounted parallel to the center surface is provided. 5. The intermediate support of a cylinder according to claim 4, wherein the intermediate support is provided. 6. The intermediate support for a cylinder according to claim 4, wherein the mounting groove is also used as a mounting groove of a sensor bracket for holding a sensor for detecting a longitudinal position of the piston inside the cylinder tube.