JP3770339B2 - Mounting structure of magnetic member for adsorbing seal band and magnet for adsorbing seal band - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide device in which a magnetic member provided on both sides in the width direction of an opening provided along the axial direction of a base member and a flexible seal band are magnetically attracted to close the opening, and in particular, the magnetic member. And a seal band attracting magnet used as a magnetic member.
[0002]
[Prior art]
Conventionally, the opening formed in the base member of the slide device as described above is closed with a magnetically adsorbing flexible seal band. Japanese Patent Publication No. 61-5006 and Japanese Patent Publication No. 63-190909. JP, 60-237208, A, etc. have disclosed. These are magnets (magnetic members) with a rectangular cross section having groove openings that open upward along the barrel longitudinal (axis) direction on both sides in the width direction of slits (openings) formed in a cylinder barrel as a base member. A groove is formed, a magnet extending in the longitudinal direction of the barrel is embedded in the magnet mounting groove, and the slit is closed by magnetically adsorbing the seal band outside the slit and the seal band inside the slit. A so-called rodless cylinder is configured as a whole so as to block the pressure fluid leakage from the cylinder.
[0003]
The magnet mounting structure will be described in more detail. (1) Magnet mounting grooves D provided on both sides of the slit B of the cylinder barrel A with the groove opening C facing upward, and the left and right side surfaces of the groove D facing downward An inclined surface E is formed so as to be narrow, and the hooks F are formed by spreading the tips of the inclined surfaces E outward in the width direction. The magnet mounting groove D is formed in a direction perpendicular to the longitudinal direction of the barrel A. In other words, an elastic magnet member H (from the groove opening C toward the groove bottom G) (rubber magnet: for example, a ferrite-based or rare earth magnet powder mixed with rubber) is pushed into the mounting groove D to be elastic. What is held (FIG. 12), {circle around (2)} A hooking portion F projecting inward is formed in the groove opening C of the mounting groove D, and the rubber magnet H is pushed from the groove opening C toward the groove bottom G to be elastically held. (Fig. 13), and (3) mounting groove The right and left sides leave a flat parallel surfaces, the magnets H of rectangular cross-section, there is to bond between the groove bottom surface G (Figure 14). In the figure, N and S indicate the polarities of the magnets.
[0004]
[Problems to be solved by the invention]
It is very convenient that the magnetic member mounting groove has a groove opening that opens outward, particularly when the base member (here, a cylinder barrel) is extruded using a mold. That is, as shown in FIG. 15, in order to extrude the cylinder barrel, a die J having a male-female relationship with the cross-section of the base member is used. In the groove D having the groove opening C, the groove opening is used. Since the mold part K for forming the groove inner shape from C can be supported in a cantilever shape, the mold is simpler than the case where a hole (hollow part: hollow part) completely surrounded on four sides is formed. Because. However, in the above (1) and (2), the rubber magnet is elastically deformed so as to get over the hooking portion and is pushed into the magnet mounting groove, so that the pushing amount of the rubber magnet is likely to vary. The magnetic surfaces H1 and H2 are wavy along the longitudinal direction, the distance from the seal band varies in the longitudinal direction, and the magnetic attraction force with respect to the seal band may be strong and weak, which may impair the sealing performance of the seal band. Further, a magnetic material having poor elasticity in the width direction or not having elasticity cannot be attached at all. In (3), since the adhesive is uniformly applied over the entire length (or both) of either the magnet mounting groove or the magnet, and then the both are fitted and bonded, If the coating amount is not uniform and there is a lacking part, the magnet may peel away from the upper part during use, and the slit closing action of the seal band attracted to the magnet may not be exhibited.
[0005]
[Means for Solving the Problems]
In this application, it is set as the cross-sectional shape which has the groove opening opened to the outside in the width direction both sides of the opening part of the base member extended in an axial direction, and has the latching | locking part which positions at least the groove opening direction of a magnetic member. A magnetic member mounting groove is provided, and a magnetic member having a cross-sectional shape complementary to the cross-sectional shape of the magnetic member mounting groove is inserted into the magnetic member mounting groove in the axial direction from the end surface side of the base member. In a state where the position in the groove opening direction is restricted, the position of the magnetic member in the axial direction is restricted. As a result, the magnetic member is positioned in a mechanical engagement state with respect to the mounting groove in the groove width direction and the groove opening direction, so that the magnetic member is not peeled in the groove opening direction during use. Since it is inserted from the axial direction, the variation in the position of the surface along the groove width direction of the magnetic member is suppressed and the seal band adsorption state is more uniform compared to the conventional method of pushing in the groove bottom direction of the magnetic member mounting groove using elasticity. Become.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present application includes a base member having an opening extending in the axial direction, which is a longitudinal direction of the base member, a slide body that includes a portion that moves in the opening and an inner portion inside the base member, and is movable in the axial direction. A flexible seal band that closes the opening, and the flexible seal band is provided along the longitudinal direction on both sides in the width direction of the opening, and the opening is directed upward In the slide device, which is adsorbed by a magnetic adsorption action with a magnetic member mounted in a magnetic member mounting groove having a groove opening which opens upward in the above- mentioned opening, the magnetic member mounting The groove has a cross-sectional shape having at least a locking portion for regulating the position of the magnetic member in the groove opening direction, and the cross-sectional shape of the magnetic member is a cross-sectional shape complementary to the cross-sectional shape of the magnetic member mounting groove, The magnetic member in a state where the magnetic member mounting groove is inserted from the base member end face side in the axial direction and position regulating the groove width direction and the groove opening direction of the magnetic member, the position regulating the axial direction of the magnetic member alms It consists of For example, the slide device is a fluid pressure actuated rodless cylinder, in which case the base member is a cylinder barrel, the opening is a slit, and the magnetic member is a strip magnet. Of course, the slide device is not limited to the rodless cylinder, and may be a slide device with another driving form, for example, a slide body that is moved by a known feed screw mechanism, rack, or pinion mechanism.
[0007]
According to this, when the magnetic member is inserted in the axial direction from the end surface side of the base member, the magnetic member is inserted in a complementary shape into the magnetic member mounting groove having a cross-sectional shape and has a groove width direction and a groove opening direction. Since the position is regulated, the variation in the position of the surface along the groove width direction of the magnetic member (the surface facing the seal band) is extremely reduced. Therefore, the distance between the magnetic member and the seal band is kept almost uniform in the axial direction, and the adsorption state is stabilized. Further, since the magnetic member is at least restricted in position in the groove opening direction by the locking portion, the magnetic member is not peeled off during use. Further, since it is inserted from the longitudinal direction, a magnetic member having poor elasticity or no elasticity can be used.
[0008]
The position of the magnetic member in the longitudinal direction may be controlled by an end member connected to the base end. By doing in this way, the axial direction position of a magnetic member can be controlled, without using an adhesive agent at all. However, in order to facilitate the assembly work of other members after inserting the magnetic member into the magnetic member mounting groove, the magnetic member is bonded to the mounting groove at the end of the magnetic member using a slight amount of adhesive. May be.
[0009]
It is preferable to provide locking portions on both side surfaces in the groove width direction of the magnetic member mounting groove, since the mechanical coupling between the magnetic member and the mounting groove becomes more firm.
[0010]
It is preferable that the magnetic member mounting grooves on both sides of the opening have a cross-sectional shape that can accommodate the same magnetic member by reversing the surface along the groove width direction. According to this, since the magnetic members inserted into the magnetic member mounting grooves are the same on the left and right, it is not necessary to prepare magnetic members having different cross-sectional shapes.
[0011]
When the magnetic members that are the same on the left and right are magnets and have cross-sectional shapes that are symmetrical in the width direction and the thickness direction, the magnets are marked with magnetic pole distinguishing markings on either the top or bottom surface Good. According to this, the magnetic poles can be easily distinguished, and assembly errors can be prevented.
[0012]
The marking may be a notch extending along the entire length of the magnet, which is simultaneously formed when the magnet is extruded. According to this, it is possible to omit the step of separately marking after the magnet is formed.
[0013]
【Example】
Hereinafter, the rodless cylinder 1 will be described as an example of the slide device. In FIG. 1, a cylinder barrel 2 made of a non-magnetic material exemplified as a base member has a cylinder hole 2a and has a rectangular outer shape as shown in FIG. 2, and one barrel wall 2b has a longitudinal direction. A slit 4 exemplified as an opening is formed over the entire length. Both ends of the cylinder barrel 2 (here, only one end is shown) are closed with an end cap 6 exemplified as an end member to form a cylinder chamber 3 between the end caps 6. The cylinder chamber 3 is divided into front and rear cylinder chambers 3A and 3B by a piston 5 as an internal moving body (inner member of the slide body) having piston ends 8 and 8 at both ends. The piston 5 is integrally provided with a force transmission member (piston yoke) 11 that penetrates the slit 4 and protrudes to the outside at an intermediate portion between the piston ends 8 and 8. As apparent from FIG. 2, a part of the force transmission member 11 moves in the slit 4. A piston mount 12 as an outer moving body disposed on the outer side of the barrel 2 is connected to an external projecting portion of the force transmission member 11. The piston 5, the force transmission member 11, and the piston mount 12 constitute a slide body 13 that moves along the axial direction of the cylinder barrel 2.
[0014]
An inner seal band 9 exemplified as a flexible seal band is provided inside the slit 4 so as to penetrate the slide body 13 in the axial direction. Further, an outer seal band 10 exemplified as another flexible seal band is provided outside the slit 4. The longitudinal ends of the inner seal band 9 are screwed with set screws 15 into T-shaped inner seal band stop plates 14 inserted into the insertion holes 6a formed in the end caps 6 at both ends. The outer seal is fixed to the end cap 6 by a set screw 15 by being crimped to the upper inner surface of the insertion hole 6a, and the outer seal band 10 is fixed to the inner seal band holding plate 14 by a set screw 16 at both longitudinal ends. It is clamped and fixed between the band stopper plate 17 and the inner seal band stopper plate 14. The inner end face 14 a in the axial direction of the inner seal band stopper plate 14 is flush with the inner end face in the axial direction of the end cap 6. Inner, outer seal band 9 and 10, a width greater than the width of the slit 4, a flexible material having a property of being attracted by a magnet, for example, stainless chromium steel ,, steel belts are magnetized, or steel belt And the outside of which is covered with rubber (described in Japanese Patent No. 2502241).
[0015]
The inner seal band 9 is in close contact with both side portions of the slit 4 on the inner side of the barrel 2 by the magnetic force of a band-shaped magnet, which will be described later, provided on both sides of the slit 4 in the width direction. The slit portions corresponding to the front and rear cylinder chambers 3A and 3B are closed so that there is no fluid leakage from the inside, and the outer seal band 10 is attached to the outer surface of the barrel 2 by the same magnetic adsorption. In close contact, dust does not enter the slit 4 from the outside of the barrel 2. Therefore, by supplying and discharging fluid from the supply / discharge port 7 of the end cap 6 to the left and right cylinder chambers 3A and 3B, the piston 5 moves left and right, and thereby the piston mount 12 moves.
[0016]
As shown in FIG. 4, magnet mounting grooves 20 exemplified as magnetic member mounting grooves are formed on both sides in the width direction of the slit 4 of the cylinder barrel 2 over the entire length of the barrel 2. Each of the magnet mounting grooves 20 has a groove opening 21 that opens upward when the slit 4 faces upward. On both side surfaces 22 in the groove width direction, the same triangular locking grooves 23 shown as locking portions wider than the groove openings 21 are formed from the groove bottom 24 to the same height position over the entire length. is there. The locking groove 23 is locked with a locking protrusion 31 of a band-shaped magnet 30 described later, and positions the groove width direction of the magnet 30 and the groove opening direction. The mounting groove 20 is slightly smaller in the distance L1 from the vertex 25 to the outer surface 2c of the outer seal band 10 formed on the upper surface of the barrel 2 than the dimension L from the groove bottom 24 to the vertex 25 of the locking groove 23. The cross-sectional shape is large and can be attached by reversing magnetized surfaces 32 and 33 of a band-shaped magnet 30 described later. In this embodiment, the cylinder barrel 2 is formed by extrusion molding of an aluminum alloy, and the mounting groove 20 is simultaneously formed simultaneously with the formation of the cylinder hole 2a.
[0017]
The band-shaped magnet 30 illustrated as a magnetic member mounted in the mounting groove 20 is a permanent magnet, and as shown in FIG. 4, the cross section thereof is in the width direction (in the mounted state, unless a notch 34 described later is provided). (Same as the groove width direction) and the thickness direction (same as the groove opening direction) are completely symmetrical. From the left and right side surfaces in the width direction, the length of the triangular axial line that is locked in the locking groove 23 is related. A stop protrusion 31 is formed to protrude outward. The left and right widths of the belt-like magnet 30 are set slightly smaller than the inner method of the left and right side surfaces 22 of the mounting groove 20, and the upper and lower magnetized surfaces 32 extend along the width direction from the apex of the locking protrusion 31. , 33 is the same as the dimension L from the groove bottom 24 to the apex 25 of the locking groove 23 in the mounting groove 20. The magnetized surfaces 32 and 33 of the magnet 30 are magnetized so as to have different magnetic poles, and a notch 34 for distinguishing the magnetic poles is provided on one of the magnetized surfaces (here, the surface 32). It is provided over 30 full lengths.
[0018]
Here, the magnet 30 is obtained by kneading magnet powder into a plastic resin material, and extruding the kneaded material through the mold 100 (FIG. 6) with an extruder, and then cutting it. This is a plastic magnet manufactured by magnetizing the magnetized surfaces 32 and 33 so as to have different polarities with the notch 34 as a reference. Of course, the rubber magnet described in the prior art can be used as the magnet 30, and this rubber magnet can also be extruded using a mold. The mold 100 used for extrusion molding has a notch 34 and an extrusion hole 101 having a cross section for forming a locking protrusion 31, and the notch 34 and the locking protrusion 31 are formed in the mold 100 during extrusion molding. Are simultaneously formed. According to this manufacturing method by extrusion molding, an extremely long plastic magnet 30 can be obtained with the cross-sectional shape. Since the plastic magnet 30 is flexible , it can be bent. Therefore, the long magnet 30 can be bent. Can be wound up like a string. However, since it is a plastic magnet 30, it does not have elasticity like a rubber magnet.
[0019]
Since the magnet mounting groove 20 is open at both ends of the cylinder barrel 2, the belt-like magnet 30 is unwound in the state of being wound up when assembled, as shown in FIG. From one end portion, the locking protrusion 31 of the magnet 30 and the locking groove 23 of the magnet mounting groove 20 are aligned to be inserted in the axial direction (longitudinal direction of the barrel 2). And if it inserts to the position where the front-end | tip of the magnet 30 reaches the other end of the barrel 2, the magnet 30 will be cut | disconnected with the knife at one end of the barrel 2, and the magnet 30 will be made into barrel length. At this time, with reference to the notch 34, the notch 34 faces upward (in the outer seal band direction) in the magnet mounting groove 20 on one side of the slit 4, and the notch 34 in the magnet mounting groove 20 on the other side. The magnetized surfaces 32 and 33 are reversed and mounted so that the left and right magnets face downward, and the magnetic pole surfaces that are the upper surfaces of the pair of left and right magnets 30 that are mounted are different from each other. It arrange | positions so that it may become a pole (N pole, S pole), and the width direction both edges of the seal bands 9 and 10 can be magnetically attracted. Instead of such a notch 34, in order to distinguish the magnetic poles, the upper and lower surfaces of the magnet 30 may be painted and marked in advance so as to distinguish the magnetic poles. By applying the marking (notch), the magnetic pole assembly error can be eliminated even with the magnet 30 that is symmetrical in the width and thickness directions without the marking.
[0020]
When the cutting dimension of the magnet 30 is in good agreement with the overall length of the barrel 2, the cutting end surface 30a of the magnet 30 and the end surface 2d of the barrel 2 are located in the same plane, so as shown in FIG. The end surface 14a of the inner seal band stopper plate 14 attached to the end cap 6 that closes the end of the barrel abuts on the longitudinal end surface 30a of the magnet 30, and the longitudinal position of the magnet 30 is regulated. In addition, when the cutting dimension of the magnet 30 is cut slightly shorter than the entire length of the barrel 2 and the end face 30a of the magnet 30 is positioned on the inner side in the axial direction from the end face of the barrel 2, the magnet 30 moves somewhat in the longitudinal direction. Is allowed, the longitudinal position of the magnet 30 can be restricted (in this case, it is prevented from coming off) by the end face 14a of the stop plate 14 of the end cap 6. However, in any case, when the assembly work of other members (slide body 13, seal bands 9, 10, etc.) is performed until the end cap 6 is assembled after the magnet 30 is inserted into the mounting groove 20. When the assembly moves in the longitudinal direction and the assembly operation is not easy, the barrel end portion of the magnet 30 may be adhered to the magnet mounting groove 20 with an adhesive in order to facilitate the assembly operation. Thereby, even when the magnet 30 is shorter than the overall length of the barrel 2, there is no axial movement after assembly.
[0021]
In this way, the magnet 30 having a complementary cross section is inserted into the magnet mounting groove 20 having a predetermined cross section from the axial direction, so that the magnet 30 is compared with the conventional magnet that is pushed from the groove opening 21 toward the groove bottom 24 using elasticity. Waves along the length of the magnetized surfaces 32 and 33 can be suppressed, variation in the distance between the inner and outer seal bands 9 and 10 in the longitudinal direction is suppressed, and the attractive force is stable, so the sealing function is reliable. To be demonstrated. Since the magnet 30 is restricted by the mechanical engagement between the groove width direction and the groove opening direction with the magnet mounting groove 20, even when using an adhesive, a slight amount is used to stop the axial movement. This is economical.
[0022]
Next, another example of a magnet and a magnet mounting groove will be shown. In FIG. 7, from the left and right side surfaces 22A of the magnet mounting groove 20A, locking protrusions 23A (locking portions narrower than the groove openings 21A) having a triangular cross section are symmetrically protruded inward in the width direction. It has a cross-sectional shape that is complementary to the cross-sectional shape of the groove having the stop ridge 23A, the upper and lower centers become a locking groove 31A constricted in a triangular shape inside, and has a symmetrical shape in the upper, lower, left, and right sides. Is formed on one of the upper and lower magnetic pole surfaces 32A, 33A. Also in this example, the left and right magnet mounting grooves 20A have a cross-section in which the magnet 30A having the same shape is reversely mounted.
[0023]
Furthermore, another example of a magnet and a magnet mounting groove is shown. In FIG. 8, the magnet mounting groove 20 </ b> B has a portion close to the groove bottom 24 </ b> B with respect to the groove opening 21 </ b> B that is widened on both sides in the slit width direction to form a locking portion 23 </ b> B. Yes. The magnet 30B has a complementary (T-shaped) cross section whose cross section is inserted into the T-shaped magnet mounting groove 20B and whose position in the width direction and the vertical direction is regulated. In this example, since the cross section of the left and right magnet mounting grooves 20B is not configured to accommodate the magnet 30B upside down, the magnets 30B mounted in the magnet mounting grooves 20B on both sides of the slit 4 are separately left and right. It is necessary to prepare.
[0024]
Yet another example is shown in FIG. This is because the upper part of the magnet mounting groove 20C having a rectangular cross section is a groove opening 21C near the slit 4, and the entire groove extends outward from the groove opening 21C in the width direction of the slit 4, and that part is locked. It functions as the unit 23C. The magnet 30C has a rectangular cross-sectional shape that is complementary to the rectangular cross-section, and as is apparent from the figure, the vertical and horizontal directions are symmetrical, and the groove width direction and groove opening are determined by the groove inner surface excluding the groove opening 21C. Directional position is regulated.
[0025]
FIG. 10 shows still another example. Here, only one side of the slit 4 is shown. In FIG. 10A, the magnet mounting groove 20D is obliquely widened downward from the groove opening 21D to form a trapezoidal cross section, and the widened portion functions as the locking portion 23D. The magnet 30D has a trapezoidal cross section because it has a complementary cross section. In FIG. 10B, both side surfaces of the magnet mounting groove 20E in the width direction itself position the width direction of the magnet 30E having an I-shaped cross section, and the locking protrusion 23E exclusively positions in the opening direction of the magnet. It is. In FIG.10 (c), the latching protrusion 23F is made to protrude in the width direction inner side from the left side surface of the magnet mounting groove 20F. In FIG. 10A, the magnet mounting groove on the side not shown is the same as the shape shown in the drawing, and the magnetized surface area of the magnet 30D is wide on the lower side. It is advantageous when you want to increase. Further, the magnet mounting groove on the side not shown in FIG. 10B is the same as that shown in the figure. Further, in FIG. 10C, the magnet mounting groove on the side (not shown) has a shape in which the illustrated one is turned upside down (that is, the locking ridge protrudes from the right side surface of the magnet mounting groove). The same magnet can be mounted upside down.
[0026]
In the embodiments so far, plastic magnets have been described as examples. However, in the present application, metal magnets having no other elasticity can be used. As shown in FIG. 11, when the cylinder barrel 2 is extremely long, for example, in the case of the cross section of FIG. 5, a number of short metal magnets 51 are prepared as shown in FIG. It can insert in the magnet mounting groove 20 of the barrel 2 in order. Since the metal magnet 51 can be a magnet having a larger magnetic force than a plastic magnet or a rubber magnet, it is convenient when it is desired to increase the attractive force of the seal band.
[0027]
In the above embodiment, the rodless cylinder having the inner and outer seal bands has been described. However, the same rodless cylinder having only the inner seal band (the aforementioned Japanese Patent Publication No. 61-5006) or the inner Synthetic resin (made of plastic) that does not magnetically adsorb the seal band as a magnetic material, or the outer seal band is magnetically adsorbed using the outer seal band as a magnetic member, and the inner seal band is not magnetically adsorbed. A slide device having only an outer seal band that closes the outside of the opening in which the slide body is moved by a resin-based one, or a screw feed mechanism, a rack, or a pinion mechanism (No. 8-4995, etc.) Furthermore, as disclosed in real-Open No. 4-117201, the axis is an arc Also rodless cylinder having a cylinder barrel are, of course be applied. Further, when the seal band itself is a flexible band having a magnetic force, a magnetic member made of a magnetic material magnetically coupled thereto, for example, a magnetized stainless chrome steel is used as a magnetic member having a predetermined cross-sectional shape, You may mount | wear with the magnetic member mounting groove of a base member.
[0028]
【The invention's effect】
As described above, in the present invention, the magnetic member is inserted in a complementary shape into the magnetic member mounting groove having a cross-sectional shape from the end surface of the base member, thereby restricting the groove opening direction and the groove width direction position of the magnetic member. As a result, variations in the position of the surface of the magnetic member in the direction facing the seal band can be suppressed. Therefore, the distance between the magnetic member and the seal band is kept substantially uniform, and the adsorbed state of the seal band hardly varies in the axial direction. In addition, since the magnetic member and the magnetic member mounting groove are mechanically engaged with each other by the locking portion, the magnetic member is not peeled off during use. Further, since it is inserted from the axial direction, a magnetic member having poor elasticity or no elasticity can be used.
[0029]
In the case where the axial position of the magnetic member is regulated by the end member connected to the base end, the axial position of the magnetic member can be regulated without using any adhesive.
[0030]
In the case where the engaging portions are respectively provided on both side surfaces in the width direction of the magnetic member mounting groove, the mechanical coupling between the magnetic member and the mounting groove can be further strengthened.
[0031]
If the magnetic member mounting grooves on both sides of the opening have a cross-sectional shape that can accommodate the same magnetic member by reversing the surface along the groove width direction, the magnetic members inserted into the magnetic member mounting groove are the same on the left and right. This eliminates the need for preparing magnetic members having different cross-sectional shapes, and is economical.
[0032]
If the magnetic members that are the same on the left and right are magnets and are symmetrical in the width direction and the thickness direction, the magnetic poles can be distinguished by marking the magnets on either the upper or lower surface. Is easy and can prevent assembly errors.
[0033]
In the case where the marking is notched over the entire length in the axial direction of the magnet, which is formed at the same time when the magnet is extruded, it is possible to omit the step of separately marking after the magnet is formed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a rodless cylinder.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a view as viewed from III in FIG.
4 is an enlarged sectional view taken along line IV-IV in FIG. 1;
FIG. 5 is an explanatory diagram of a mounting operation of a band-shaped magnet in a magnet mounting groove.
FIG. 6 is a diagram of a mold for manufacturing a strip magnet.
FIG. 7 is another example.
FIG. 8 is another example.
FIG. 9 is another example.
FIG. 10 is another example.
FIG. 11 is an example in which a strip magnet is divided and inserted into a magnet mounting groove.
FIG. 12 is a prior art.
FIG. 13 is prior art. FIG. 14 is prior art.
FIG. 15 is a view of a mold for forming a cylinder barrel.
[Explanation of symbols]
2 Cylinder barrel 4 Slit 6 End cap 9 Inner seal band 10 Outer seal band 11 Force transmission member 13 Slide body 20 Magnet mounting groove 23 Locking groove 30 Strip magnet 31 Locking ridge 32 Magnetized surface 33 Magnetized surface 34 Notch

Claims (6)

A base member having an opening extending in the axial direction is the longitudinal direction of itself, and the slide body movable in the axial direction comprise portions and the base member inside the inner portion to move the opening portion, the opening A flexible seal band that closes the portion, and the flexible seal band is provided along the longitudinal direction on both side portions in the width direction of the opening, and in the state in which the opening is directed upward, In the slide device that is adsorbed by a magnetic adsorption action between the magnetic member mounted in the magnetic member mounting groove having a groove opening that faces and closes the opening, the magnetic member mounting groove is The magnetic member has a cross-sectional shape having a locking portion for regulating the position in the groove opening direction, and the magnetic member has a cross-sectional shape complementary to the cross-sectional shape of the magnetic member mounting groove. Wood in a state where the magnetic member mounting groove is inserted from the base member end face side in the axial direction and position regulating the groove width direction and the groove opening direction of the magnetic member, and subjected to the position regulation of the axial direction of the magnetic member Mounting structure of magnetic member for sticker band adsorption.   2. The magnetic band mounting structure for adsorbing a seal band according to claim 1, wherein an axial position of the magnetic member is regulated by an end member connected to the base end.   The structure for attaching a magnetic member for adsorbing a seal band according to claim 1 or 2, wherein locking portions are provided on both side surfaces in the groove width direction of the magnetic member mounting groove.   The magnetic member mounting groove on both sides of the opening has a cross-sectional shape capable of accommodating the same magnetic member by reversing the surface along the groove width direction. Mounting structure of magnetic member for sticker band adsorption.   A magnetic member for adsorbing a seal band, which has a symmetrical cross section in the width direction and the thickness direction, and a surface along the width direction is a magnetized surface, and one of the magnetized surfaces is marked for magnetic pole distinction. A magnet for adsorbing a seal band, characterized in that 6. The seal band attracting magnet according to claim 5 , wherein the marking is a notch that is simultaneously formed when the magnet is extruded and extends over the entire length in the axial direction of the magnet.

Images