TWM569796U - Fluid pressure cylinder - Google Patents

Abstract

A fluid pressure cylinder (10) is equipped with a table (16) connected to an end plate (18) and displaceable in the axial direction of a cylinder body (12), a stroke adjuster (20) provided on a side surface of the cylinder body (12) and configured to adjust a displacement amount of the table (16), and a switch rail (24) attached to a side surface (S22) of the stroke adjuster (20) and provided with a switch attaching groove (24a, 24b) in which a switch (SW) for detecting the position of the table (16) is attached.

Description

Fluid pressure cylinder

The present invention relates to a fluid pressure cylinder capable of displacing a pedestal with a piston along the axial direction of the cylinder under the action of a pressurized fluid.

Heretofore, there has been known a fluid pressure cylinder equipped with a cylinder having a cylinder chamber to which pressurized fluid is supplied, a piston displaceably disposed in the cylinder chamber, and a piston rod connected to the piston and movable in the cylinder A pedestal that moves in the axial direction (refer to Japanese Laid-Open Patent Publication No. 2008-008329).

In such a fluid pressure cylinder, for example, a workpiece to be conveyed is placed at an upper portion of the pedestal, and pressure fluid supplied to the cylinder chamber pushes the piston, whereby the pedestal connected to the piston via the piston rod moves up in the axial direction of the cylinder Bit. The displacement of the pedestal is adjusted by using a stroke adjuster attached to one surface of the cylinder. Further, it is also suggested that the position of such a pedestal is detected by a position detecting switch (for example, a magnetic proximity switch) attached to the other surface of the cylinder (refer to Japanese Patent No. 3066317).

However, in a conventional fluid pressure cylinder, it is necessary to The path adjuster and the position detecting switch are attached to mutually different side surfaces of the cylinder, respectively. Therefore, there arises a problem that the adjustment work of the stroke adjuster and the confirmation work of the indicator of the position detecting switch cannot be simultaneously performed from the same direction.

This apparatus is manufactured in consideration of the above problems, and an object thereof is to provide a fluid pressure cylinder capable of simultaneously performing an adjustment operation of a stroke adjuster and an inspection operation of an indicator of a position detecting switch from the same direction.

A fluid pressure cylinder according to the apparatus, comprising: a cylinder body accommodating a cylinder chamber and having a piston displaceable in the cylinder chamber; and a piston rod including an end connected to the piston, the piston rod being The axial movement of the cylinder body is forward and backward; the end plate is connected to the other end of the piston rod; the pedestal is connected to the end plate and can be axially displaced on the upper surface of the cylinder; the stroke adjuster is Provided on a side surface of the cylinder and configured to adjust a displacement amount of the pedestal; and a switch rail attached to a side surface of the stroke adjuster and provided with a switch attachment groove, the switch attachment groove A switch configured to detect a position of the pedestal is attached therein.

According to the fluid pressure cylinder of the device, the adjustment operation of the stroke regulator and the confirmation of the position detection switch can be performed simultaneously and in the same direction. In particular, when two or more fluid pressure cylinders on which the stroke regulator and the switch rail are disposed on the same side are used in parallel, the adjustment operation can be performed for each fluid pressure cylinder from the same direction while maintaining the connected state. Confirm the job.

In the fluid pressure cylinder of the device, the pedestal is perpendicular to The width of the axial direction is preferably narrower than the width of the cylinder in the same direction.

With this configuration, when the pedestal is displaced in the axial direction, the pedestal is prevented from coming into contact with the stroke adjusters and the attachment bodies of the fluid pressure cylinders respectively provided on the side surfaces of the cylinder block. Therefore, the pedestal can be smoothly displaced in the axial direction.

In the fluid pressure cylinder of the apparatus, preferably, the stroke adjuster may have a body attachment portion attached to a side surface of the cylinder body, the body attachment portion including a recess formed along the axial direction And a bolt insertion hole formed through the recess, the abutting body is attached to the side surface of the pedestal and disposed in the recess, the adjusting bolt is inserted into the bolt insertion hole, and the nut is attached to the adjusting bolt The thread is engaged and configured to adjust a position of the adjustment bolt facing the distal end of the recess.

With this configuration, by changing the thread engagement position of the nut to adjust the position of the distal end portion of the adjustment bolt, the axial abutment between the abutment body attached to the pedestal and the distal end portion of the adjustment bolt can be changed. The position of the joint can easily limit the amount of displacement of the pedestal.

In the fluid pressure cylinder of the apparatus, it is preferable that the adjusting bolt has an impact absorbing member at the distal end portion.

With this configuration, when the side surface of the abutting body abuts against the distal end portion of the impact absorbing member, the impact can be absorbed and thus the pedestal can be smoothly stopped.

Preferably, the fluid pressure cylinder of the apparatus may further include a magnet configured to move back and forth in the axial direction together with the abutting body.

With this configuration, the magnetic properties of the magnetic body attached to the abutment body are detected by the position detecting switch attached to the switch attachment groove, Thereby the position of the pedestal can be detected.

According to the fluid pressure cylinder of the apparatus, the adjustment work of the stroke adjuster and the confirmation of the indicator of the position detecting switch can be simultaneously performed from the same direction.

The above and other objects, features and advantages of the present invention will become more apparent from

10‧‧‧ fluid pressure cylinder

12‧‧‧Cylinder

12a‧‧‧rail

12b‧‧‧Cylinder room

12c, 12d, 12h, 12n‧‧‧ bolt mounting holes

12e, 12f, 12i, 12j‧‧‧ Pressure fluid inlet/outlet

12g, 12m, 16b‧‧‧ positioning holes

12b1‧‧‧First cylinder room

12b2‧‧‧Second cylinder room

12p‧‧‧ openings

12q‧‧‧ Sealing member

14‧‧‧ piston rod

16‧‧‧ pedestal

16a‧‧‧ rail insertion slot

16c, 18a‧‧‧ bolt mounting holes

18‧‧‧End board

20‧‧‧Travel adjuster

20a‧‧‧Subject Attachment

20b‧‧‧Resistance

20c, 20d‧‧‧ adjustment bolts

20e, 20f‧‧‧ nuts

20g, 20h‧‧‧ impact absorbing members

20i‧‧‧ recess

20j, 20k‧‧‧ bolt insertion hole

22‧‧‧ magnetic body

24‧‧‧Switch track

24a, 24b‧‧‧ switch attachment slot

26‧‧‧Piston

28, 30, 32‧‧‧ Connecting bolts

34‧‧‧Bolts

36‧‧‧ Board components

38‧‧‧ boards

A~D‧‧‧ arrow

E2‧‧‧ end face

R1, R2‧‧‧ flow channel

SW‧‧‧ position detection switch

S1, S13‧‧‧ upper surface

S2~S5‧‧‧ side surface

S6, S11‧‧‧ bottom surface

S12, S14, S15‧‧‧ side surface

S16‧‧‧ end face

S21~S24‧‧‧ side surface

S32~S34‧‧‧ side surface

S42‧‧‧ switch attachment surface

W1, W2‧‧‧ width

1 is an external perspective view of a fluid pressure cylinder according to an embodiment of the presenting apparatus; FIG. 2 is an external perspective view of the fluid pressure cylinder shown in FIG. 1 as viewed obliquely from below; FIG. 3 is a fluid shown in FIG. a partially omitted cross-sectional view of the cylinder along the line III-III; FIG. 4 is a right side view of the fluid pressure cylinder shown in FIG. 1; and FIG. 5 is a cross-sectional view of the fluid pressure cylinder along the line VV of FIG. 3; Fig. 6 is an external perspective view showing the movement of the pedestal of the fluid pressure cylinder shown in Fig. 1 along the guide rail of the cylinder; and Fig. 7 is a view showing a use example in which the plurality of fluid pressure cylinders shown in Fig. 1 are connected in parallel. The stereoscopic view of the exterior.

Hereinafter, a fluid pressure cylinder according to the present authoring device will be described based on a preferred embodiment with reference to the drawings.

As shown in Figures 1 to 3, the fluid pressure cylinder 10 is equipped with a cylinder block 12, a piston rod 14, a pedestal 16, an end plate 18, a stroke adjuster 20, a magnet 22 and a switch rail 24.

The cylinder block 12 is made of a metal such as aluminum and formed into a substantially rectangular parallelepiped shape. The cylinder block 12 has a guide rail 12a having a convex cross section at its upper surface S1. The guide rail 12a guides the pedestal 16 in the axial direction of the cylinder block 12 (arrow A-B direction).

As shown in Fig. 3, the cylinder block 12 has a cylinder chamber 12b formed in the axial direction of the cylinder block 12 therein. A piston 26 that is axially displaceable is housed in the cylinder chamber 12b. The cylinder chamber 12b is divided into two spaces by the piston 26, that is, the first cylinder chamber 12b1 and the second cylinder chamber 12b2.

The cylinder block 12 has bolt mounting holes 12c and 12d on its side surface S2. The pressure fluid inlet/outlet ports 12e, 12f communicate with the cylinder chamber 12b via the flow passages R1, R2, and the pressurized fluid (compressed air) is supplied and discharged to the cylinder chamber 12b through the passage. Further, a positioning hole 12g and a bolt mounting hole 12h are provided on the side surface S3 for attaching the stroke adjuster 20 or attaching the cylinder 12 to an unillustrated attachment Physically.

The cylinder block 12 has a pressure fluid inlet/outlet 12i, 12j on its side surface S4, which communicates with the cylinder chamber 12b via fluid passages R3, R4, and through which the pressure fluid passes through the inlet/outlet port 12i It is supplied to the cylinder chamber 12b and discharged from the cylinder chamber 12b. The port for supplying/discharging the pressure fluid is selected in accordance with the attachment position of the stroke adjuster 20 as an optional component of the cylinder block 12. In this embodiment, as in the first As shown in Fig. 3, the pressure fluid inlet/outlet ports 12e, 12f are used, and the pressure fluid inlet/outlet ports 12i, 12j are closed by closing the plug 12k. Further, on the side surface S4 of the cylinder block 12, a positioning hole 12m and a bolt mounting hole 12n for attaching the stroke adjuster 20 or attaching the cylinder block 12 to not shown are provided. On the attached body.

The cylinder block 12 is formed with an opening portion 12p extending in the axial direction on the side surface S5 opposed to the end plate 18. The end of the piston rod 14 in the direction of the arrow A is held at the opening portion 12p by the sealing member 12q to be movable back and forth. The cylinder block 12 has a through hole 12r and a bolt mounting hole 12s on its bottom surface S6 for attaching the cylinder block 12 to an attachment body not shown.

One end of the piston rod 14 is connected to the piston 26, and the other end is connected to the end plate 18 by a connecting bolt 28. Therefore, the piston rod 14 and the end plate 18 reciprocate in the axial direction of the cylinder 12 as the piston 26 moves.

The pedestal 16 is formed in a flat plate shape corresponding to the shape of the upper surface S1 of the cylinder block 12. The pedestal 16 forms a rail insertion groove 16a having a concave cross section on its bottom surface S11. The guide rail 12a of the cylinder block 12 is inserted into the guide rail insertion groove 16a so that the pedestal 16 can be moved on the guide rail 12a.

The end plate 18 is connected to the side surface S12 of the stage 16. The pedestal 16 has a plurality of positioning holes 16b and bolt mounting holes 16c on its upper surface S13, and these positioning holes 16b and bolt mounting holes 16c are separated from each other and used to fix an object to be conveyed, such as a workpiece, a jig, etc. (not shown ) at a predetermined location on the pedestal 16.

The pedestal 16 has a bolt mounting hole on its side surface S14 16d for attaching the stroke adjuster 20 (contact body 20b) to the pedestal 16 (refer to Fig. 2). Like the side surface S14, the side surface S15 of the pedestal 16 is provided with a bolt mounting hole (not shown). Further, as shown in Fig. 4, the width W1 of the pedestal 16 in the direction orthogonal to the axial direction (the direction of the arrow C-D) is narrower than the width W2 of the cylinder 12 in the same direction. That is, the side surfaces S14 and S15 of the pedestal 16 are located closer to the guide rail 12a than the side surfaces S3 and S4 of the cylinder block 12. Therefore, when the pedestal 16 is displaced in the axial direction, the pedestal 16 can be prevented from coming into contact with the stroke adjuster 20 (main body attachment portion 20a) provided on the side surface S4 of the cylinder block 12. The same applies to the case where the cylinder 12 is attached to an attachment body (not shown) on the side surface S3 side. Incidentally, the dimensional difference in the width direction between the pedestal 16 and the cylinder block 12 is set to an appropriate value (for example, 0.2 mm or more) in accordance with the manufacturing accuracy and rigidity of the member.

The end plate 18 is formed in a flat plate shape and is connected at its central portion to one end portion of the piston rod 14 in the direction of the arrow A. Further, the end plate 18 is connected to the side surface S12 of the pedestal 16 by a plurality of connecting bolts 30. The end plate 18 has a bolt mounting hole 18a for attaching a conveyed object, such as a workpiece or the like (not shown), on the end surface S16 in the arrow A direction. Therefore, not only the object to be conveyed can be attached to the upper surface S13 of the pedestal 16, but also the end surface S16 of the end plate 18 can be attached, and the object to be conveyed can be moved in the axial direction.

The stroke adjuster 20 is disposed between the side surface S4 of the cylinder block 12 and the cylinder block 12 of the side surface S15 of the pedestal 16 and the pedestal 16, and adjusts the axial displacement amount of the pedestal 16. As shown in FIGS. 1 and 3, the stroke adjuster 20 has a main body attachment portion 20a, an abutting body 20b made of metal and having a rectangular main body, adjusting bolts 20c, 20d, nuts 20e, 20f, and impact. Absorbing members 20g, 20h.

The body attachment portion 20a has a recess 20i formed in a central portion along the axial direction. The side surface S21 of the main body attachment portion 20a is attached to the side surface S4 of the cylinder block 12. Further, as shown by a broken line in Fig. 3, the main body attachment portion 20a has bolt insertion holes 20j, 20k which are axially penetrated from the respective side surfaces S23, S24 located at both axial ends to The recess 20i.

The abutting body 20b is attached to the side surface S15 of the pedestal 16 with a plurality of connecting bolts 32, and is disposed in the recess 20i of the main body attaching portion 20a.

The ends of the adjusting bolts 20c, 20d are inserted into the bolt insertion holes 20j, 20k, respectively. The nuts 20e, 20f are threadedly engaged with the other ends of the adjusting bolts 20c, 20d, respectively. The position of the distal end portion (end portion) of the adjustment bolts 20c, 20d facing the concave portion 20i can be adjusted by changing the screw engagement positions of the nuts 20e, 20f.

The adjustment bolts 20c, 20d have respective impact absorbing members 20g, 20h at the distal end portion of the recess 20i facing the body attachment portion 20a, which are elastically deformable in accordance with the force applied from the abutment body 20b. The distal end positions of the impact absorbing members 20g, 20h can be adjusted by changing the screw engagement positions of the nuts 20e, 20f with respect to the adjustment bolts 20c, 20d. The impact absorbing members 20g and 20h absorb the impact when they abut against the side surfaces S33 and S34 of the contact body 20b. Therefore, the movement of the pedestal 16 connected to the abutting body 20b can be gently stopped.

As shown in Figures 1 and 3, the magnetic body 22 is attached by bolts. At a predetermined position of the side surface S32 of the abutting body 20b. The attachment position of the magnetic body 22 corresponds to the position of the piston 26 in the axial direction. In a space provided between the central portion of the switch rail 24 in the longitudinal direction (the direction of the arrow AB) and the side surface S32 of the abutting body 20b, the magnetic body 22 moves back and forth together with the contact body 20b in the axial direction while simultaneously with the switch rail 24 separate.

The switch rail 24 made of a non-magnetic material is connected to the side surface S22 of the stroke adjuster 20 by a bolt member 34 and a plate member 36 of a non-magnetic material such as aluminum, for example, between the guide rail and the side surface. The switch rail 24 has switch attachment grooves 24a, 24b formed at the upper and lower portions of the switch attachment surface S42 and extending in the axial direction. A position detecting switch (magnetic proximity switch) SW indicated by a broken line in Fig. 1 for detecting the position of the pedestal 16 is attached to the switch attachment grooves 24a, 24b. As shown in Fig. 5, one end of the magnetic body 22 faces the switch attachment grooves 24a, 24b, and thus the magnetic force is detected by the position detecting switch SW attached to one or both of the switch attachment grooves 24a, 24b. The magnetic properties of the body 22 can detect the position of the abutting body 20b and the pedestal 16 displaced together with the abutting body 20b.

The fluid pressure cylinder 10 according to the present embodiment is basically constructed as described above, and its operation and its operational effects will be described next. The case where the fluid pressure cylinder 10 is used together with the pressure fluid inlet/outlet ports 12e, 12f connected to a pressure fluid supply source (not shown) via a pipe (not shown) will be described below. Further, the state of the fluid pressure cylinder 10 shown in FIGS. 1 to 3 is regarded as an initial state.

First, when the pressure fluid is supplied to the pressure fluid inlet/outlet At the port port 12e, the pressurized fluid is introduced into the first cylinder chamber 12b1 of the cylinder block 12 through the fluid passage R1. At this time, the pressure fluid inlet and outlet port 12f is maintained in the pressure release state.

The pressure fluid introduced into the first cylinder chamber 12b1 presses the end surface E1 on one side of the piston 26, thereby displacing the piston 26 toward the side surface S5 of the cylinder block 12. At this time, with the displacement of the piston 26, the piston rod 14, the end plate 18, the pedestal 16, and the abutting body 20b are displaced together in the direction of the arrow A. That is, the pedestal 16 is displaced in the direction of the arrow A on the guide rail 12a of the cylinder block 12.

When the piston 26 approaches the stroke end in the direction of the arrow A, as shown in Fig. 6, the abutting body 20b abuts against the impact absorbing member 20g provided at the distal end portion of the adjusting bolt 20c. As a result, the movement of the pedestal 16 in the direction of the arrow A is buffered and then stopped. The position of the pedestal 16 of the stroke end is detected by the position detecting switch SW attached to any one of the switch attachment grooves 24a, 24b. Further, at the second cylinder chamber 12b2 of the cylinder block 12, the pressurized fluid is discharged from the pressure fluid inlet/outlet port 12f through the fluid passage R2.

In this manner, the pressurized fluid is supplied from the pressure fluid inlet/outlet port 12e to the inside of the first cylinder chamber 12b1, whereby the piston rod 14, the end plate 18, the pedestal 16, and the abutting body 20b are pressed by the pressure fluid. The arrow A is displaced and reaches the end of the stroke.

Then, when the pressure fluid supplied to the pressure fluid inlet and outlet port 12e is supplied to the pressure fluid inlet and outlet port 12f under the switching action of the switching valve (not shown), the pressure fluid is introduced into the second cylinder chamber 12b2 of the cylinder block 12 through the fluid passage R2. . At this time, the pressure fluid inlet and outlet 12e is maintained at a pressure release. Put the status.

The pressure fluid introduced into the second cylinder chamber 12b2 presses the end face E2 on the other side of the piston 26, thereby displacing the piston 26 toward the side surface S2 of the cylinder block 12 (in the direction of the arrow B). At this time, the piston rod 14, the end plate 18, the pedestal 16, and the abutting body 20b are displaced together in the direction of the arrow B along with the displacement of the piston 26. That is, the pedestal 16 is displaced in the direction of the arrow B on the guide rail 12a of the cylinder block 12.

When the piston 26 approaches the stroke end in the direction of the arrow B, the abutting body 20b abuts against the impact absorbing member 20h provided at the distal end portion of the adjusting bolt 20d facing the concave portion 20i. As a result, the movement of the pedestal 16 in the direction of the arrow B is buffered and then stopped. The position of the pedestal 16 of the stroke end is detected by the position detecting switch SW attached to any one of the switch attachment grooves 24a, 24b. Further, on the side of the first cylinder chamber 12b1 of the cylinder block 12, the pressurized fluid is discharged from the pressure fluid inlet/outlet port 12e through the fluid passage R1.

In this manner, the pressurized fluid is supplied from the pressure fluid inlet/outlet port 12f to the inside of the second cylinder chamber 12b2, whereby the piston 26 is displaced in the direction of the arrow B by the pressing of the pressure fluid, and then the fluid pressure cylinder 10 Return to the initial state shown in Figures 1 to 3.

As described above, according to the fluid pressure cylinder 10 of the present embodiment, the switch rail 24 is attached to the side surface S22 of the main body attachment portion 20a, the side surface S22 of the main body attachment portion 20a and the stroke adjuster 20 (main body attachment The portion 20a) is attached to the attachment surface (side surface S21) of the cylinder block 12, and the switch attachment surface S42 is provided with a switch attachment groove 24a to which a position detecting switch SW for detecting the position of the pedestal 16 is attached, 24b. In other words, stroke adjustment Both the unit 20 and the switch rail 24 are disposed on the same side of the cylinder block 12 and the pedestal 16. Therefore, the adjustment work of the stroke adjuster 20 and the confirmation of the pointer of the position detecting switch SW attached to the switch rail 24 can be performed simultaneously and from the same direction.

In particular, as shown in Fig. 7, when the stroke adjuster 20 and the switch rail 24 are disposed in the same direction in the same direction, two or more are used on the board 38 in which a tube (not shown) is incorporated. The fluid pressure cylinder 10 can perform the aforementioned adjustment work and confirmation work for each fluid pressure cylinder 10 while maintaining the connected state.

Further, as shown in Fig. 4, the width W1 of the pedestal 16 in the direction orthogonal to the axial direction (the direction of the arrow C-D) is narrower than the width W2 of the cylinder 12 in the same direction. Thereby, when the pedestal 16 is displaced in the axial direction, the pedestal 16 can be prevented from being attached to the stroke adjuster 20 (main body attachment portion 20a) provided on the side surface S4 of the cylinder block 12 and the side surface S3 provided on the opposite side The attached body (not shown) is in contact. For example, as shown in Fig. 7, even in the case where the fluid pressure cylinder 10 is attached to the plate 38 by the stroke adjuster 20 and the switch rail 24 provided on the upper side, the pedestal 16 can be adjusted without the plate 38 and the stroke The device 20 smoothly translates in the axial direction in contact.

Further, the stroke adjuster 20 is provided with a main body attachment portion 20a attached to the side surface S4 of the cylinder block 12, and the main body attachment portion 20a includes a recess portion 20i formed at an axial central portion and bolt insertion holes 20j, 20k, wherein The bolt insertion holes 20j, 20k are formed to penetrate from the side surfaces S23, S24 located at both axial ends to the recess 20i. The stroke adjuster 20 for adjusting the position of the adjustment bolts 20c, 20d facing the distal end portion of the recess 20i is also provided There are an abutting body 20b disposed in the recess 20i and attached to the side surface S15 of the pedestal 16, adjusting bolts 20c, 20d inserted into the bolt insertion holes 20j, 20k, and nuts threadedly engaged with the adjusting bolts 20c, 20d 20e, 20f.

Therefore, by changing the thread engagement positions of the nuts 20e, 20f to adjust the positions of the distal end portions of the adjustment bolts 20c, 20d, it is possible to change the axial direction of the abutment body 20b attached to the pedestal 16 with respect to the adjustment bolts 20c, 20d. The abutment position of the distal end portion can easily limit the amount of displacement of the pedestal 16.

Further, the adjusting bolts 20c and 20d have impact absorbing members 20g and 20h which are elastically deformed in the axial direction in accordance with the force applied from the abutting body 20b at the distal end portion opposed to the concave portion 20i. Therefore, when the side surfaces S33, S34 of the abutting body 20b abut against the distal end portions of the impact absorbing members 20g, 20h, the impact absorbing members 20g, 20h absorb the impact and stop the movement of the pedestal 16.

Further, the magnetic body 22 is attached to the side surface S32 of the abutting body 20b on the side opposite to the switch attachment grooves 24a, 24b, and advances and retracts in the axial direction together with the abutting body 20b. Therefore, the position of the pedestal 16 can be detected by detecting the magnetic force of the magnetic body 22 attached to the abutting body 20b by the position detecting switch SW attached to the switch attaching grooves 24a, 24b.

Further, in the foregoing embodiment, the stroke adjuster 20 and the switch rail 24 are attached on the same side as the side surface S4 of the cylinder block 12. However, the stroke adjuster 20 and the switch rail 24 may be attached on the same side of the side surface S3 opposite to the side surface S4.

Incidentally, in the foregoing embodiment, the main body attachment portion 20a of the stroke adjuster 20 is formed as a block having a U-shaped longitudinal section body. However, the main body attachment portion 20a may be constituted by, for example, two blocks. In this case, the switch rail 24 may be attached across a gap between two blocks arranged to be spaced apart from each other in the axial direction. That is, the shape of the stroke adjuster 20 is not limited to the shape described in the foregoing embodiment, since the same advantageous effect can be obtained as long as the stroke adjuster 20 and the switch rail 24 are attached on the same side of the cylinder block 12 and the pedestal 16. .

The fluid pressure cylinder of the present invention is not limited to the foregoing embodiments, and various configurations can be made without departing from the scope of the device, and it goes without saying.

Claims (6)

A fluid pressure cylinder (10) includes a cylinder block (12) that houses a cylinder chamber (12b) and a piston (26) that is displaceable in the cylinder chamber (12b); a piston rod (14) , comprising an end connected to the piston (26), the piston rod (14) is movable back and forth in the axial direction of the cylinder (12); the end plate (18) is connected to the piston rod (14) One end; a pedestal (16) connected to the end plate (18) and axially displaceable on an upper surface (S1) of the cylinder (12); a stroke adjuster (20) is disposed in the cylinder a side surface (S4) of (12) and configured to adjust a displacement amount of the pedestal (16); and a switch rail (24) attached to a side surface (S22) of the stroke adjuster (20) and set There is a switch attachment groove (24a, 24b) configured to attach therein a switch (SW) for detecting the position of the pedestal (16). The fluid pressure cylinder (10) according to claim 1, wherein the pedestal (16) has a width (W1) perpendicular to the axial direction that is narrower than a width (W2) of the cylinder (12) in the same direction. . The fluid pressure cylinder (10) of claim 1 or 2, wherein the stroke adjuster (20) comprises: a body attachment portion (20a) attached to the cylinder block (12) a side surface (S4), the body attachment portion (20a) includes a recess (20i) formed along the axial direction and a bolt insertion hole (20j, 20k) formed to penetrate the recess (20i); the abutment body (20b) Is attached to the side surface (S15) of the pedestal (16) and disposed in the recess (20i); the adjusting bolts (20c, 20d) are inserted into the bolt insertion holes (20j, 20k); and the nut (20e, 20f) is threadedly engaged with the adjusting bolts (20c, 20d) and arranged to adjust the position of the adjusting bolt (20c, 20d) facing the distal end portion of the recess (20i). A fluid pressure cylinder (10) according to claim 3, wherein the adjustment bolts (20c, 20d) comprise impact absorbing members (20g, 20h) at the distal end portion. The fluid pressure cylinder (10) according to claim 3, further comprising: a magnet (22) configured to move back and forth in the axial direction together with the abutting body (20b). The fluid pressure cylinder (10) of claim 4, further comprising: a magnet (22) configured to move back and forth in the axial direction together with the abutting body (20b).