JP2004232662A - Fluid pressure cylinder unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a fastened state without having a projected part from a surface of a cylinder tube or the like in a fluid pressure cylinder unit. <P>SOLUTION: To each connection surface 5c of two cylinder tubes 2 to be fastened, a communication groove 8 opened in the surface, and an engagement groove 9 communicated with that, wider than the communication groove 8 inside the cylinder tube 2, are formed. A connection device 6 is provided with two engagement pieces 10 wider than the communication groove 8, that can be inserted into the engagement grooves 9, and a connection part 11 between them. The whole body of the connection device 6 can be inserted by pushing the engagement pieces 10 and the connection part 11 into the communication groove 8 and the engagement grooves 9 communicated with each other. As they are inserted, fastening surfaces 10c of the engagement pieces 10 get in contact with engagement surfaces 9c of the engagement grooves 9, so that they will not come off perpendicularly from the connections surfaces 5c. Two fluid pressure cylinders 1a and 1b are thus fastened to each other through the connection device 6, while they have no protruded parts from their surface. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hydraulic cylinder unit assembled by fastening an attachment to a hydraulic cylinder.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a hydraulic cylinder unit capable of increasing a driving force and a stroke as an actuator by fastening and assembling a plurality of hydraulic cylinders may be configured. Further, there is a fluid pressure cylinder unit configured to improve rigidity and accuracy by connecting a guide unit and a piston rod by coupling a guide unit having a guide rod to be able to reciprocate in the axial direction to a fluid pressure cylinder. The cylinder tube, which is the main body of such a fluid pressure cylinder or guide unit, is a relatively heavy member, and also receives the reaction force of the rod during operation. Screws were being used.
[0003]
As means for fastening the two members other than the screwing by the bolt, there is a method of mutually engaging the contact surfaces between the contact surfaces via a connecting member. This is achieved by forming a T-groove in the connecting surface of each of the two members to be fastened, and using a connecting tool in which two sets are formed symmetrically about the center wall with one set of the projecting piece and the elastic projecting piece. The two sets of protrusions and elastic protrusions are inserted into each T-groove in a direction substantially orthogonal to the connecting surface, and are engaged internally to fasten the two members (for example, Patent Reference 1).
[0004]
[Patent Document 1]
JP-A-8-128420
[0005]
[Problems to be solved by the invention]
However, fastening with bolts requires interposing a large-capacity bracket on the surface of the component to be fastened, or causes the head of the bolt to protrude from the surface of the cylinder tube. While the installation space of each member is being limited due to miniaturization, it has been a major factor that hinders space saving. Especially when the cylinder tube of the fluid pressure cylinder is fastened and fixed to the moving body, the necessary moving space increases in proportion to the volume of the protruding part such as the bracket and the bolt head, so that it can come into contact with other members There is a problem that the property becomes high.
[0006]
In addition, when an arbitrary guide unit is combined with an arbitrary hydraulic cylinder and fastened, it is necessary to newly form fastening bolt holes and the like in each of the hydraulic cylinder body and the guide unit body, which complicates assembly work. Problem. Depending on the configuration of the fluid pressure cylinder and the guide unit, such a non-standard bolt hole may not be newly formed, and fastening may be difficult.
[0007]
On the other hand, in the fastening using the above-described coupling tool, since there is no portion that protrudes from the surface of the member like the head portion of the bolt even in the fastened state, it is suitable for saving installation space due to recent miniaturization of the device. Since the fastening structure is used, and there is no need to provide a screw hole or a pin hole, the relative arrangement between the two members and the place to be fastened can be arbitrarily set and can be easily changed. However, even if the protruding piece and the elastic protruding piece on each side are inserted into the T-groove in a direction substantially perpendicular to the connecting surface, it is difficult to firmly fasten because they can be easily separated in opposite directions.
[0008]
An object of the present invention is to provide a fluid pressure cylinder unit having various configurations in which cylinder tubes are firmly fastened to each other and have no portion protruding from the surface.
[0009]
Another object of the present invention is to provide a hydraulic cylinder unit that can be easily and firmly fastened by combining an arbitrary guide unit with an arbitrary hydraulic cylinder.
[0010]
[Means for Solving the Problems]
The fluid pressure cylinder unit of the present invention is a fluid pressure cylinder unit that drives a driven object in a linear direction by fluid pressure, and includes a communication groove extending in a longitudinal direction along a connection surface and an opening parallel to the connection surface. An engaging groove connected to the communication groove having a mating surface is formed, and a cylinder tube that accommodates a piston provided with a piston rod so as to be able to reciprocate in an axial direction and a longitudinal direction along a connecting surface that contacts the connecting surface. An attachment provided with a communication groove extending in an opening and an engagement surface parallel to the connection surface and having an engagement groove connected to the communication groove, and a cylinder tube and an attachment each having their respective communication grooves opposed to each other, and The first engaging piece which is formed in the longitudinal direction and the longitudinal direction is inserted into the engaging groove of the cylinder tube under the condition where it is brought into contact with A second engaging piece formed in the hand direction and inserted into the engaging groove of the attachment in the longitudinal direction; and a proximal end portion having a width smaller than the width of these engaging pieces, and And a connecting part having a connecting part for connecting the cylinder tube and the attachment by embedding the connecting part in the cylinder tube and the attachment so that the engaging surface and the fastening surface come into contact with each other. Pressure cylinder unit.
[0011]
The fluid pressure cylinder unit of the present invention is characterized in that it has a fastening member that elastically deforms the distal end of the engaging piece in a direction in which the fastening surfaces approach each other.
[0012]
The fluid pressure cylinder unit of the present invention is characterized in that the cross section of the cylinder tube is a rectangle including a rectangle, and the outer peripheral surfaces adjacent to each other are connection surfaces formed with communication grooves.
[0013]
The hydraulic cylinder unit of the present invention is characterized in that the attachment is a cylinder tube similar to the cylinder tube.
[0014]
The fluid pressure cylinder unit of the present invention is characterized in that the piston rod of the cylinder tube and the piston rod of the attachment are connected by a connecting member.
[0015]
The fluid pressure cylinder unit of the present invention is characterized in that two cylinder tubes are fastened with their respective piston rods in opposite directions, and chuck members are attached to the respective piston rods.
[0016]
In the fluid pressure cylinder unit of the present invention, a guide rail is attached to each cylinder tube, and a slide table attached to a sliding body that slides along each guide rail is connected to each piston rod. .
[0017]
The fluid pressure cylinder unit according to the present invention is characterized in that the attachment is a guide block that accommodates the guide rod so as to be able to reciprocate in the axial direction, and the guide rod and the piston rod are connected by a connecting member.
[0018]
The fluid pressure cylinder unit of the present invention is characterized in that a plurality of cylinder tubes and attachments are respectively fastened.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0020]
FIG. 1 is an overall perspective view of a fluid pressure cylinder unit according to a first embodiment of the present invention. FIG. 1 (A) is an overall perspective view before assembly, and FIG. 1 (B) is assembly. FIG. Each of the two fluid pressure cylinders 1a and 1b is a pneumatic cylinder using compressed air as a working fluid (fluid pressure), and a piston rod 4 projects from one end surface 3 of a cylinder tube 2 as a member to be fastened. The piston rod 4 is provided so that a driven object can be driven to reciprocate in a linear direction by supplying or discharging compressed air through a supply / discharge port (not shown). Hereinafter, the hydraulic cylinder is a pneumatic cylinder in any of the embodiments.
[0021]
As shown in FIG. 1, the two pneumatic cylinders 1a and 1b have their respective piston rods 4 arranged in parallel in the same direction, and the cylinder tubes 2 are brought into contact with each other at a connection surface 5c to form an insertion connector as a connector. 6 and a common end plate 7a as a connecting member is attached to the ends of the piston rods 4 to form a twin rod type cylinder. In this configuration, the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0022]
The cylinder tube 2 has an end face 3 substantially in the shape of a square and is entirely in the shape of a rectangular parallelepiped that is long in the axial direction of the piston rod 4. The four side faces 5 are each formed with a communication groove that extends in the longitudinal direction along the axial direction and opens. 8 and an engaging groove 9 connected thereto are formed, and the communicating groove 8 and the engaging groove 9 of the connecting surface 5c which are in contact with each other are connected via an insertion connecting tool 6 which is a connecting tool. The state of the connection is a state in which the entire insertion connecting tool 6 is inserted and installed in a pair of the communication groove 8 and the engagement groove 9 which are connected to face each other. Each cylinder tube 2 shown in FIG. 1 has a communication groove 8 and an engagement groove 9 formed on four side surfaces 5, respectively. However, the communication groove 8 is formed only at least on the connection surface 5c where the cylinder tubes 2 are in contact with each other. And the engagement groove 9 may be formed. The shape of the end face 3 of the cylinder tube 2 is a regular square, but may be a rectangle.
[0023]
FIG. 2 is a perspective view of the hydraulic cylinder unit shown in FIG. 1, which is used to connect the hydraulic cylinders with each other and to engage with a pair of communication grooves in a communication state before the hydraulic cylinders are inserted. It is an expansion perspective view of a groove. As shown in FIG. 2, the communication groove 8 is formed so as to extend in the longitudinal direction along the side surface and open, and the engagement groove 9 is formed inside the cylinder tube 2 so as to communicate with the communication groove 8. It has a substantially T-shaped cross section. The communication groove 8 has a width of the opening width Wo and is formed to have an opening depth Do from the surface. The engagement groove 9 has an internal width Wi wider than the opening width Wo, and is formed to have an internal depth Di, and is located on both sides of the communication groove 8 on the inner surface of the engagement groove 9. The side surface arranged in parallel with the connection surface 5c constitutes the engagement surface 9c.
[0024]
As shown in FIG. 2, the insertion connector 6 has two engaging pieces 10 symmetrically arranged in the left-right direction in the figure, and a connecting portion 11 integrally connects the engaging pieces 10 to each other. It is a connecting tool having the most basic structure. Since one of the engagement pieces 10 and the connection portion 11 are integrated, the cross-sectional shape orthogonal to the insertion direction is a T-shape. The connection portion 11 is formed with a connection width Wc slightly smaller than the opening width Wo so as to penetrate the communication groove 8, and the connection height Hc of the connection portion 11 (that is, the length between the two engagement pieces 10). Are formed to have dimensions that are approximately twice the opening depth Do of the communication groove 8.
[0025]
Outer side surfaces of the engaging piece 10 formed on the sides of the connecting portion 11 in the longitudinal direction at the positions on both sides of the connecting portion 11 constitute a fastening surface 10c, and the insertion width Wf of the engaging piece 10 is such that the fastening surface 10c is formed by the engaging groove. 9 is formed wider than the opening width Wo so as to be able to contact and engage with the engagement surface 9c, and the insertion width Wf of the engagement piece 10 is smaller than the internal width Wi so as to be inserted into the engagement groove 9. The insertion height Hf is formed to be smaller than the internal depth Di so that it can be inserted into the engagement groove 9.
[0026]
As shown in FIGS. 1 and 2, the insertion connector 6 having the above configuration is pushed into the inside of a pair of communication grooves 8 and engagement grooves 9, which are faced to each other, from both end surfaces 3. Can be inserted. In the inserted state of the insertion coupler 6, the fastening surface 10c of each engagement piece 10 comes into contact with the engagement surface 9c of the engagement groove 9 so that the engagement surface 10c does not come off from the connection surface 5c of the cylinder tube 2 in a direction orthogonal thereto. I have. For this reason, the two cylinder tubes 2 cannot be separated from each other via the insertion connector 6, that is, the two cylinder tubes 2 are firmly fastened via the insertion connector 6. If the dimensions of each part of the insertion coupler 6 are formed with high precision, the two cylinder tubes 2 can be fastened sufficiently reliably. It is also possible to prevent slipping and slipping.
[0027]
FIG. 3A shows a comparative example in which two fastening blocks 101a and 101b each having a communication groove 8 and an engagement groove 9 on the side face are arranged in parallel as in FIG. FIG. 3B is a plan view of a configuration in which the engagement grooves 9 are bolted to each other via an I fitting 102, and FIG. 3B is a front view thereof. A screw hole 104 is provided in the insertion engagement member 103 inserted in the engagement groove 9, and the bolt screw head 105 and the insertion engagement member 103 are positioned between the screw hole 104 by tightening the bolt screw 105 attached thereto. And the communication groove 8 is firmly sandwiched between the I fitting 101 and the I fitting 101 to be fixed.
[0028]
As shown in the figure, in the case of this configuration, the thick I fitting 102 and the head 106 of the bolt screw are exposed from the surfaces of the fastening blocks 101a and 101b. Requires a large installation space by the volume of the exposed portion. In particular, when such an assembly constitutes a part of the moving body, there is a problem that such exposed portions come into contact with other members, electric wiring, and the like.
[0029]
On the other hand, the pneumatic cylinder units of the present embodiment shown in FIGS. 1 and 2 are arranged so as to accommodate the insertion connector 6 which is a connector therein, and are in a fastened state. However, there is no portion that protrudes from the surface of the cylinder tube 2. Therefore, the pneumatic cylinder unit of the present embodiment has a fastening configuration suitable for saving the installation space due to recent miniaturization of the device.
[0030]
In addition, if the communication groove 8 and the engagement groove 9 provided in the two cylinder tubes 2 are in communication with each other even if they are partially opposed to each other, the insertion connector 6 is inserted into the communication location. Can be fastened. Therefore, even if the relative arrangement of the two cylinder tubes 2 is arbitrarily changed in the direction in which the communication groove 8 is formed, the insertion coupling 6 can be inserted and fastened. If the range in which the communication grooves 8 communicate with each other is long enough, the insertion connector 6 can be inserted into an arbitrary position within the communication range, and the fastening position is set at an arbitrary position. can do. Although the insertion connector 6 shown in FIG. 2 is formed of resin, it may be made of metal.
[0031]
Further, the pneumatic cylinder unit of the present embodiment is driven by one pneumatic cylinder since the two pneumatic cylinders 1a and 1b arranged in parallel are securely fastened as described above to drive the same end plate 7a. In this configuration, the driving force is almost doubled and rigidity is increased as compared with the case where the driving force is increased.
[0032]
FIG. 4 is an overall perspective view of a pneumatic cylinder unit according to a second embodiment of the present invention. FIG. 4 (A) is an overall perspective view of a state before assembly, and FIG. 4 (B) is an assembled state. It is the whole perspective view of a state. In these figures, the same reference numerals are given to members and shapes common to those of the pneumatic cylinder unit shown in FIGS.
[0033]
As shown in FIG. 4, in a state where one pneumatic cylinder 1a is sandwiched between two guide units 14a and 14b in a parallel arrangement, the respective connecting surfaces 5c are fastened via the insertion connecting tool 6, and the piston rod 4 A common end plate 7b, which is a connecting member, is attached to the end of the guide rod 15 and a guide rod 15 to form a guide cylinder. In this configuration, the guide blocks 16 of the two guide units 14a and 14b function as attachments fastened to the cylinder tube 2.
[0034]
The guide units 14a and 14b are installed such that the same guide rod 15 penetrates and protrudes from both ends of a guide block 16 as a member to be fastened so as to be able to advance and retreat. It is supported by a ball bearing (not shown) so that it can slide smoothly. The guide block 16 has a rectangular parallelepiped shape having the same end surface as the cylinder tube 2 and being shorter in the axial direction than the cylinder tube 2, and has the same communication groove 8 and engagement groove 9 formed on four side surfaces, respectively. ing. Each guide block 16 is connected to the cylinder tube 2 by inserting the entire insertion connector 6 into a set of the communication groove 8 and the engagement groove 9 which are in communication with each other at the connection surface 5 c with the cylinder tube 2. 2 has been fastened.
[0035]
The pneumatic cylinder unit of the present embodiment has a fastening configuration suitable for saving the installation space as in the first embodiment, and the two guide units 14a and 14b connect the pneumatic cylinder 1a. Since the guide plate is guided, a stable operation is possible even with the long end plate 7b. The guide block 16 may be formed to have the same length as the cylinder tube 2, and the ball bearing provided in the guide block 16 may be a slide bearing.
[0036]
FIG. 5 is an overall perspective view of a pneumatic cylinder unit according to a third embodiment of the present invention. FIG. 5 (A) is an overall perspective view of a state before assembly, and FIG. 5 (B) is an assembled state. It is the whole perspective view of a state. In these figures, the same reference numerals are given to members and shapes common to the pneumatic cylinder units shown in FIGS. 1, 2 and 4.
[0037]
As shown in FIG. 5, the two pneumatic cylinders 1 a and 1 b have their respective piston rods 4 arranged in parallel in the same direction, and the cylinder tubes 2 are brought into contact with each other at the connecting surface 5 c and inserted through the insertion connecting tool 6. Have concluded. Two guide unit pairs 14a to 14b and 14c to 14d fastened by arranging and guiding two guide units 14a to 14d in parallel, respectively, sandwich the pneumatic cylinder pair 1a and 1b in parallel from the vertical direction in the figure. A 3 × array is used, and all the connecting connecting surfaces 5 c that are in contact with each other are fastened by the insertion connecting tool 6. A lifter cylinder is configured by attaching a common end plate 7c as a connecting member to the ends of all the piston rods 4 and the guide rods 15. In this configuration, the two cylinder tubes 2 to be fastened function as attachments to each other, and the other four guide blocks 16 function as attachments to be fastened to the two cylinder tubes 2.
[0038]
The pneumatic cylinder unit of the present embodiment has a fastening configuration suitable for saving the installation space as in the first embodiment, and has two sets of guide unit pairs 14a to 14b and 14c to Since 14d guides the pair of pneumatic cylinders 1a and 1b, the driving force doubled to the end plate 7c having a large area corresponding to 2 × 3 cross sections of the cylinder tube 2 And a configuration that enables stable operation.
[0039]
FIG. 6 is an overall perspective view of a pneumatic cylinder unit according to a fourth embodiment of the present invention. FIG. 6 (A) is an overall perspective view of a state before assembly, and FIG. 6 (B) is an assembled state. It is the whole perspective view of a state. In these figures, the same reference numerals are given to members and shapes common to those of the pneumatic cylinder unit shown in FIGS.
[0040]
As shown in FIG. 6, the two pneumatic cylinders 1a and 1b have their respective piston rods 4 arranged in parallel in opposite directions to each other, and the cylinder tubes 2 are brought into contact with each other at a connecting surface 5c to be inserted through an insertion connector 6. The chuck plate 17 as a chuck member is attached to each piston rod 4 to form an air chuck. In this configuration, the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0041]
Each of the chuck plates 17 has a grip portion 18 formed to extend downward in the drawing from a connection point with the piston rod 4, and a support rod 19 is attached to each of the chuck plates 17. In each cylinder tube 2, a support rod hole 20 is formed in the end face 3 opposite to the protruding side of the piston rod 4, and each support rod 19 is slidably inserted into the support rod hole 20 during assembly. Has become. That is, each chuck plate 17 is stably supported at two points, the piston rod 4 and the support rod 19, and the operation of the piston rod 4 drives the cylinder tube 2 to reciprocate. When the two chuck plates 17 are driven back and forth, an opening and closing operation between the chuck plates 17 is performed.
[0042]
The pneumatic cylinder unit of the present embodiment has a fastening configuration suitable for saving the installation space as in the first embodiment, and performs the opening / closing operation between the chuck plates 17 to achieve these It is configured to be able to grasp a workpiece or the like in between.
[0043]
FIG. 7 is an overall perspective view of a pneumatic cylinder unit according to a fifth embodiment of the present invention. FIG. 7A is an overall perspective view of a state before assembly, and FIG. 7B is an assembled state. It is the whole perspective view of a state. In these figures, the same reference numerals are given to members and shapes common to those of the pneumatic cylinder unit shown in FIGS.
[0044]
As shown in FIG. 7, the two pneumatic cylinders 1a and 1b have their respective piston rods 4 arranged in parallel in the same direction, and the cylinder tubes 2 are brought into contact with each other at a connection surface 5c to be an insertion connector as a connector. 6, and a common end plate 7d as a connecting member is attached to the ends of the piston rods 4. Also, guide rails 21 are installed in parallel on two side surfaces 5 located in parallel in each of the pneumatic cylinders 1a and 1b, and two guide plates 22 are slidably installed on each guide rail 21. A common slide table 23a attached to the plate 22 is connected to the piston rod 4 via the tip plate 7d to form a two-guide cylinder with a table. In this configuration, the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0045]
The guide rail 21 is formed in a rectangular shape having a rail width Wr wider than the opening width Wo and a rail height Hr and substantially the same length as the cylinder tube 2 so as not to penetrate the communication groove 8. The nut is inserted and fixed in the engaging groove 9 by being screwed to the groove 8 and fixed. The guide plate 22 is a plate member formed in a square shape having one side substantially the same width as the cylinder tube 2, and has a groove width substantially the same as the rail width Wr on its lower surface so that the guide rail 21 can be fitted and slid. Thus, a rail groove 24 having a dimension shallower than the rail height Hr is formed. The slide table 23a is a rectangular plate having substantially the same width as the two pneumatic cylinders 1a and 1b, and is screwed to four guide plates 22 arranged in series on each guide rail 21. It is fixed to one side surface of a tip plate 7d attached to the piston rod 4. That is, the slide table 23a can apply a load to the side surface 5 of each cylinder tube 2 via the guide plate 22 and the guide rail 21, and can reciprocate in the axial direction by the operation of the piston rod 4.
[0046]
The pneumatic cylinder unit of the present embodiment described above has a fastening configuration suitable for saving installation space as in the first embodiment, and is added from the vertical and horizontal directions of the cylinder tube 2. The structure enables stable reciprocating operation with doubled driving force while receiving a certain load.
[0047]
Also, as shown in FIG. 8, the guide cylinder with a table can be configured as a single guide cylinder with a table in which the entire width is formed in half by only one pneumatic cylinder 1a.
[0048]
FIG. 9 is an overall perspective view of a pneumatic cylinder unit according to a sixth embodiment of the present invention. FIG. 9 (A) is an overall perspective view of a state before assembly, and FIG. 9 (B) is an assembled state. It is the whole perspective view of a state. In these drawings, members and shapes common to those of the pneumatic cylinder unit shown in FIGS. 1, 2 and 7 are denoted by the same reference numerals.
[0049]
As shown in FIG. 9, the two pneumatic cylinders 1a and 1b have their respective piston rods 4 arranged in parallel in opposite directions to each other, and the cylinder tubes 2 are brought into contact with each other at the connecting surface 5c to be inserted through the insertion connecting tool 6. The end plates 7e are attached to the respective piston rods 4. Also, two guide rails 21 and four guide plates 22 are respectively installed on the upper and lower surfaces of the entire pair of pneumatic cylinders 1a and 1b, and slide tables 23a attached to the respective surfaces are mounted on the pistons via opposite end plates 7e. The double stroke cylinder is constituted by being connected to the rod 4. In this configuration, the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0050]
The pneumatic cylinder unit of the present embodiment described above has a fastening configuration suitable for saving installation space as in the first embodiment, and is added from the vertical and horizontal directions of the cylinder tube 2. The structure enables stable reciprocating operation with a doubled stroke while receiving a certain load.
[0051]
FIG. 10 is an overall perspective view of a pneumatic cylinder unit according to a seventh embodiment of the present invention. FIG. 10 (A) is an overall perspective view of a state before assembly, and FIG. 10 (B) is an assembled state. It is the whole perspective view of a state. In these figures, the same reference numerals are given to members and shapes common to those of the pneumatic cylinder unit shown in FIGS.
[0052]
As shown in FIG. 10, the two pneumatic cylinders 1a and 1b have their piston rods 4 oriented in the same direction, and are arranged in parallel with a spacer block 25 interposed therebetween. They are brought into contact with each other on a connecting surface 5c and fastened via an inserting connecting tool 6 as a connecting tool, and a common end plate 7f as a connecting member is attached to the front ends of the two piston rods 4 to form a twin rod type cylinder with a spacer. Is composed. In this configuration, the spacer block 25 and the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0053]
The spacer block 25 has a rectangular parallelepiped shape having the same dimensions as the cylinder tube 2, and has a communication groove 8 and an engagement groove 9 formed on four side surfaces 5, respectively. The spacer block 25 shown in FIG. 10 has the communication groove 8 and the engagement groove 9 formed on the four side surfaces 5, respectively, but the communication groove 8 and the engagement groove 9 are formed only at least on the connection surface 5 c with each cylinder tube 2. Should be formed. As shown in FIG. 11, the spacer block may be a spacer block 26 having a half of the connecting member, that is, a half connecting portion 11 and an engaging piece 10 in advance on the connecting surface 5c with the cylinder tube. In this case, there is no need to prepare a connecting tool as an independent part.
[0054]
The pneumatic cylinder unit of the present embodiment has a fastening structure suitable for saving installation space, as in the first embodiment, and further increases the rigidity by doubling the driving force. It has a configuration.
[0055]
FIG. 12 is an overall perspective view of a pneumatic cylinder unit according to an eighth embodiment of the present invention. FIG. 12 (A) is an overall perspective view of a state before assembly, and FIG. 12 (B) is an assembled state. It is the whole perspective view of a state. In these drawings, members and shapes common to those of the pneumatic cylinder unit shown in FIGS. 1, 2, 4, and 10 are denoted by the same reference numerals.
[0056]
As shown in FIG. 12, guide units 14a and 14b are disposed on both sides of one pneumatic cylinder 1a, respectively, and all are sandwiched between the pneumatic cylinder 1a and the guide units 14a and 14b with a spacer block 25 interposed therebetween. They are arranged in parallel. They are brought into contact with each other at a connecting surface 5c and fastened via an inserting connecting tool 6 as a connecting tool, and a common tip plate 7g as a connecting member is attached to the tip of all the piston rods 4 and guide rods 15, and a spacer and It constitutes a guide cylinder. In this configuration, the two spacer blocks 25 and the two guide blocks 16 function as attachments fastened to the cylinder tube 2.
[0057]
The pneumatic cylinder unit of the present embodiment described above has a fastening configuration suitable for saving installation space as in the first embodiment, and has a long shape corresponding to five cross sections of the cylinder tube 2. Even with the tip plate 7g, it is configured to enable stable operation with high rigidity.
[0058]
FIG. 13 is an overall perspective view of a pneumatic cylinder unit according to a ninth embodiment of the present invention. FIG. 13 (A) is an overall perspective view of a state before assembly, and FIG. 13 (B) is an assembled state. It is the whole perspective view of a state. In these drawings, members and shapes common to those of the pneumatic cylinder units shown in FIGS. 1, 2, 7, and 10 are denoted by the same reference numerals.
[0059]
As shown in FIG. 13, the two pneumatic cylinders 1a and 1b have their piston rods 4 oriented in the same direction, and are arranged in parallel with a spacer block 25 interposed therebetween. They are brought into contact with each other on a connecting surface 5c and fastened via an insertion connecting tool 6 as a connecting tool. Also, guide rails 21 are installed in parallel on two side surfaces 5 positioned in parallel in each of the pneumatic cylinders 1a and 1b, and two guide plates 22 are slidably installed on each guide rail 21. A common slide table 23b attached to the guide plate 22 is connected to the piston rod 4 via the tip plate 7h to form a table and two guide cylinders with spacers. In this configuration, the spacer block 25 and the two cylinder tubes 2 to be fastened function as an attachment to each other.
[0060]
The pneumatic cylinder unit of the present embodiment described above has a fastening configuration suitable for saving installation space similarly to the first embodiment, and is added from the vertical and horizontal directions of the cylinder tube 2. In this configuration, the driving force is doubled while receiving a heavy load, and the rigidity is further improved.
[0061]
Next, modified examples of the coupler used in the fastening configuration of the above embodiment will be described below with reference to the drawings. FIG. 14 (A) is an overall perspective view of a tilt stopper which is a first modification of the connecting tool, and FIG. 14 (B) is a set of two cylinder tubes 2 facing each other in the vertical direction in the figure. FIG. 14C is a front view of a state in which the inclination stopper is inserted into the communication groove 8 and the engagement groove 9, and FIG. 14C is a cross-sectional view in the insertion direction along line 14C-14C in FIG. In these drawings, members and shapes common to those of the pneumatic cylinder unit shown in FIG. 2 are denoted by the same reference numerals. In FIG. 14, the upper right direction (or right direction) in the drawing is the direction of pushing the inside of the communication groove and the engagement groove in the insertion direction of the tilt stopper, and the opposite lower left direction (or left direction) is pulled out. In the following description, the directions are referred to as a pushing direction and a removing direction, respectively, for convenience of description.
[0062]
As shown in FIG. 14, the inclination stopper 32 is made of spring steel in which two engaging pieces 10 are arranged symmetrically in the vertical direction in the figure, and the connecting portion 11 is integrally connected between the engaging pieces 10. It has a molding. At the center of the connecting portion 11 in the vertical direction in the drawing, the extracting direction side is divided by the connecting division groove 34 except for the connecting portion 33 on the pushing direction side. Since one engagement piece 10 is integrally connected to the base end of the connection portion 11, the cross-sectional shape orthogonal to the insertion direction has a T-shape (see FIG. 14B). . The connecting portion 11 is formed with a connecting width Wc slightly smaller than the opening width Wo so as to be able to penetrate the communication groove 8, and the connecting height Hc of the connecting portion 11 (that is, the length between the two engaging pieces 10). Are formed to have dimensions slightly larger than approximately twice the opening depth Do of the communication groove 8.
[0063]
Of the outer side surfaces of the engagement piece 10, the side surfaces formed in the longitudinal direction at positions on both sides of the connecting portion 11 constitute a fastening surface 10c, and the engagement width Wf of the engagement piece 10 is determined by the engagement of the fastening surface 10c. The opening width Wo is formed wider than the opening width Wo so that the engagement surface 9c of the groove 9 can be brought into contact with the engagement surface 9c, and the engagement width Wf of the engagement piece 10 is formed smaller than the internal width Wi so as to be inserted into the engagement groove 9. Have been. The engagement height Hf is smaller than the internal depth Di so that it can be inserted into the engagement groove 9. As shown in FIG. 14, the entirety of the inclined stopper 32 having the above-described configuration can be inserted into the pair of communication grooves 8 and the engagement grooves 9 that face each other by pushing in the insertion direction. ing.
[0064]
In this inserted state, the fastening surface 10c of each engagement piece 10 comes into contact with the engagement surface 9c of the engagement groove 9 so as not to come off from the connection surface 5c of the cylinder tube 2 in a direction orthogonal thereto. For this reason, the two cylinder tubes 2 cannot be separated from each other via the tilt stopper 32, that is, the two cylinder tubes 2 are fastened via the tilt stopper 32.
[0065]
As described above, the structure to be fastened by the connecting tool of the present modification shown in FIG. 14 is similar to the case of the first embodiment shown in FIG. , That is, there is no portion that protrudes from the surface of the cylinder tube 2 while being fastened. Therefore, the configuration fastened by the connecting tool of this modification is suitable for saving the installation space due to recent miniaturization of the device.
[0066]
As shown in the drawing, the end faces of the engagement pieces 10 on the extraction direction side are inclined faces 35 facing each other at an acute angle with respect to the connecting face 5c of the cylinder tube 2, and the entirety of the inclination stopper fitting 32 is formed. The end faces on the pushing direction side are formed on the same plane. A screw hole 36 is formed in each engagement piece 10 in a direction substantially orthogonal to the inclined surface 35, and the screw hole 36 penetrates to an outer surface 37 parallel to the fastening surface 10c. A set screw 39 having a tapered distal end 38 is attached to each screw hole 36 as a fastening member.
[0067]
As shown in FIGS. 14 (B) and 14 (C), by turning the set screw 39 while each engagement piece 10 is inserted into the engagement groove 9, the tip 38 of the set screw is engaged. It protrudes from the outer surface 37 of the piece and comes into contact with the bottom surface 12 of the engagement groove. Thereby, the inclination stopper 32 can be reliably installed while preventing the inclination stopper 32 from coming out of the communication groove 8 and the engagement groove 9.
[0068]
By further turning the set screws 39, the fastening surfaces 10c of the engagement pieces 10 are strongly pressed in a direction approaching each other due to the reaction force of the contact force between the tip end 38 of the set screw and the bottom surface 12 of the engagement groove. The two communication grooves 8 facing each other are strongly sandwiched via the engagement surface 9c. Accordingly, the tilt stopper 32 as a connecting tool can be more firmly fastened to the two cylinder tubes 2 because a fastening force is applied so as to approach each other.
[0069]
When the engaging piece 10 is pressed against the communication groove 8 by the reaction force of the force that causes the tip end 38 of the set screw to protrude and abut on the bottom surface 12 of the engaging groove, the coupling portion 33 is formed as a bent portion and each of the fastening surfaces 10 c Are easily elastically deformed in the direction in which they approach each other, so that each engagement piece 10 can be easily pressed against the communication groove 8. When the two cylinder tubes 2 are released from each other by releasing the fastening, the set screw 39 is turned back to eliminate the pressing force of the engagement piece 10, and then the cylinder tubes 2 are connected to the communication groove 8 and the engagement groove 9. It can be easily separated by sliding in the longitudinal direction. Further, in the connecting tool provided with the above-described fastening member, the frictional adjustment with respect to the wall surface of the engagement groove 9 after the insertion is possible, so that a dimensional tolerance that causes a slight clearance fit is allowed.
[0070]
FIG. 15 (A) is an overall perspective view of an enlarged divided metal fitting which is a second modification of the connecting tool, and FIG. 15 (B) is installed inside a pair of communicating grooves 8 and engaging grooves 9 facing each other. FIG. 15C is a front view of the enlarged split metal fitting, and FIG. 15C is a cross-sectional view in the insertion direction along line 15C-15C in FIG. In these drawings, members and shapes common to those of the fastening assembly shown in FIG. 14 are denoted by the same reference numerals.
[0071]
As shown in FIG. 15, the enlarged split metal fitting 42 integrally has two engagement pieces 10 in a vertically symmetric arrangement in the figure, and the connecting portion 11 is integrated between the engagement pieces 10. At the central position in the vertical direction in the figure, most (about two-thirds) in the extraction direction side is divided by the connection division groove 34 except for the coupling portion 33 in the pushing direction side.
[0072]
A projection 43 is formed on the outer surface 37 of each engagement piece 10 in the longitudinal direction, and the cross section of the periphery of each engagement piece 10 orthogonal to the insertion direction has a substantially cross shape (FIG. 15 (B)). When this enlarged dividing metal fitting 42 is used, an accommodation groove 44 into which the projection 43 can be inserted is formed on the bottom surface 12 of the engagement groove on the cylinder tube 2 side to be fastened. As shown in FIG. 15, the enlarged divided metal fitting 42 having the above configuration can be inserted as a whole by being pushed in the insertion direction into a pair of the communication grooves 8 and the engagement grooves 9 which face each other and communicate with each other. ing.
[0073]
As shown in the drawing, the half of each engagement piece 10 on the extraction direction side is separated into an outer elastic deformation part 46 and an inner elastic deformation part 47 in the vertical direction in the figure by an engagement piece division groove 45 as a notch. Further, a screw hole 48 is formed in the center of the engagement piece dividing groove 45. A tapered curved surface without a thread is formed on the side of the screw hole 48 in the extraction direction. A flathead screw 49 having a relatively large taper on the seat surface is attached to each screw hole 48 as a fastening member.
[0074]
As shown in FIG. 15, by turning the flat head screw 49 while each engagement piece 10 is inserted into the engagement groove 9, the tapered seat surface of the flat head screw 49 is engaged as a wedge-shaped member. The engagement piece division groove 45 is expanded by biting into the engagement piece division groove 45. As a result, the fastening surfaces 10c of the two inner elastic deformation portions 47 are strongly pressed in a direction approaching each other, and the two communicating grooves 8 facing each other are strongly sandwiched via the engagement surface 9c. As a result, the enlarged divided metal fitting 42 as a connecting tool applies a fastening force to the two cylinder tubes 2 and can be firmly fastened.
[0075]
As described above, even in the two cylinder tubes 2 fastened by the connecting tool of the present modified example, reliable fastening without any protruding portions from their surfaces is possible.
[0076]
FIG. 16A is an overall perspective view of a wedge split metal fitting which is a third modification of the connecting tool, and FIG. 16B shows a state where the wedge split metal fitting is fastened inside a pair of facing communication grooves 8 and engagement grooves 9. FIG. 16 (C) is a cross-sectional view taken along the line 16C-16C in FIG. 16 (D), and FIG. 16 (D) is a sectional view taken along line 16D-16D in FIG. 16 (B). It is an insertion direction sectional view which follows a line. In these drawings, members and shapes common to those of the fastening assembly shown in FIG. 14 are denoted by the same reference numerals.
[0077]
As shown in FIG. 16, the wedge division metal fitting 56 is configured by assembling two wedge metal fittings 57 on the extraction direction side and a clamping metal piece 58 (fastening piece) on the pushing direction side via a screw member in the insertion direction. It is. Both the wedge fitting 57 and the sandwich fitting 58 have a distance between the bottom surface 12 of one engagement groove and the bottom surface 12 of the other engagement groove inside the communication groove 8 and the engagement groove 9 that are in communication. 2Do + 2Di), the wedge fitting 57 is formed to have substantially the same width as the internal width Wi, and the sandwich fitting 58 is formed to have substantially the same width as the opening width Wo.
[0078]
The wedge fitting 57 integrally has an engagement piece 10 that can be inserted into the engagement groove 9 at both ends in the vertical direction in the figure, and a connection portion on the extraction direction side between the two upper and lower engagement pieces 10. Most of the extruding direction side except 33 is divided in the vertical direction in the figure by the connecting division groove 34. The end surfaces on the pushing direction side of these vertically divided portions are inclined surfaces 59 formed at an obtuse angle with the outer surface 37 of the engagement piece 10.
[0079]
The clamp 58 is substantially vertically divided in the drawing direction by the connection dividing groove 34 except for the coupling portion 33 on the pushing direction side. End surfaces on the extraction direction side of these vertically divided portions are formed at an angle parallel to the inclined surface 59 of the end surface of the opposing wedge fitting 57, and are inclined surfaces 60 obliquely facing each other.
[0080]
A hole that penetrates in the insertion direction is formed in the connecting portion 33 of both the wedge fitting 57 and the holding fitting 58, and the hole of the wedge fitting 57 is a simple passing hole 61 on which no thread is formed. Is a screw hole 62 in which a screw thread is formed. A bolt screw 63 is inserted from the end face of the wedge fitting 57 on the extraction direction side, the head 64 of the bolt screw is engaged with the end face on the extraction direction side, and the screw portion of the bolt screw 63 is screwed to the screw hole 62 of the sandwich fitting. As a result, the wedge fitting 57 and the sandwich fitting 58 are assembled.
[0081]
As shown in FIG. 16, the wedge split metal fitting 56 having the above-described configuration can be inserted as a whole by being pushed into a pair of communication grooves 8 and engagement grooves 9 that face each other. When the bolt screw 63 is turned and the wedge metal fitting 57 and the clamp metal fitting 58 are pressed strongly against each other in a state where the entirety is inserted, as shown in FIG. A component force is applied to the engagement pieces 10 of the metal fitting 57 in a direction approaching each other. Since the outer surface 37 of the upper clamp 58 contacts the bottom surface 12 of the engagement groove, the outer surface 37 does not deform any more. That is, the clip metal 58 and the bolt screw 63 function as a fastening member in the wedge dividing metal tool 56. As a result, the fastening surfaces 10c of the respective engagement pieces 10 of the wedge fitting 57 are strongly pressed in a direction approaching each other, and the two communicating grooves 8 facing each other are strongly sandwiched via the engagement surface 9c. Become.
[0082]
As described above, even in the two cylinder tubes 2 fastened by the connecting tool of the present modified example, reliable fastening without any protruding portions from their surfaces is possible.
[0083]
FIG. 17A is an overall perspective view of an inclined split metal fitting which is a fourth modified example of the connecting tool, and FIG. 17B shows a state where the inclined split metal fitting is fastened inside a pair of facing communication grooves 8 and engagement grooves 9. It is a front view of the installed inclined division | segmentation metal fitting, FIG.17 (C) is sectional drawing in alignment with 17C-17C line in the same figure (D), FIG.17 (D) is 17D-17D of the same figure (B). It is an insertion direction sectional view which follows a line. In these drawings, members and shapes common to those of the fastening assembly shown in FIG. 17 are denoted by the same reference numerals.
[0084]
As shown in FIG. 17, the inclined split metal fitting 67 is configured by assembling two trapezoidal metal fittings 68a and 68b on the extraction direction side and the pushing direction side in the insertion direction via a screw member. Both the trapezoidal metal fittings 68a and 68b have a distance (2Do + 2Di) between the bottom surface 12 of one engagement groove and the bottom surface 12 of the other engagement groove inside the communication groove 8 and the engagement groove 9 which communicate with each other. And the connecting portions 72a and 72b formed to have the same height as the opening width Wo of the communication groove 8. These connecting portions 72a and 72b are arranged to face each other with inclined surfaces 69a and 69b parallel to each other.
[0085]
The trapezoidal metal fitting 68b in the pushing direction has an engaging piece 10 that can be inserted into the engaging groove 9 in the downward direction in the figure, and the trapezoidal metal fitting 68a in the extracting direction has an An engaging piece 10 that can be inserted into the groove 9 is integrally provided. Thus, the two engagement pieces 10 are arranged such that the respective fastening surfaces 10c are opposed to each other while being shifted from each other in the longitudinal direction. The inclined surfaces 69a and 69b where the two trapezoidal metal fittings 68a and 68b face each other are formed at an angle that forms an obtuse angle with the outer surface 18 on the side having the engaging piece 10.
[0086]
With the two trapezoidal metal fittings 68a, 68b arranged in series with the inclined surfaces 69a, 69b facing each other, the inclined divided metal fitting is located at the height position having the engaging piece 10 of the trapezoidal metal fitting 68a in the extraction direction. A hole penetrating the entire length in the insertion direction of 67 is formed. The hole of the trapezoidal metal fitting 68a on the pull-out direction side is a simple passage hole 70 without a thread, and the hole of the trapezoidal metal fitting 68b on the extrusion direction side is a screw hole 71 with a screw thread. A bolt screw 63 is inserted from the end surface of the trapezoidal metal fitting 68a on the extraction direction side on the extraction direction side, the head 64 of the bolt screw is engaged with the end surface on the extraction direction side, and the screw portion of the bolt screw 63 is trapezoidal on the extrusion direction side. Two trapezoidal metal fittings 68a and 68b are assembled by screwing into the screw holes 62 of the metal fitting 68b.
[0087]
As shown in FIG. 17, the inclined split metal fitting 67 having the above configuration can be inserted as a whole by being pushed into a pair of communicating grooves 8 and engaging grooves 9 which face each other and communicate with each other. When the pressing force between the two trapezoidal metal fittings 68a and 68b is increased by turning the bolt screw 63 in the state where the entirety is inserted, as shown in FIG. A pressing force is applied to the trapezoidal metal fittings 68a and 68b in the upward or downward direction in the drawing in opposite directions. Since the inclined surfaces 69a and 69b are formed at the above-described angles, a downward component force is applied to the trapezoidal metal fitting 68a on the extraction direction side in the downward direction in FIG. A pressing force directed upward in the middle acts. As a result, the fastening surfaces 10c of the engaging pieces 10 of the trapezoidal metal fittings 68a and 68b are strongly pressed in a direction approaching each other, and the two communicating grooves 8 facing each other are strongly sandwiched via the engaging surface 9c. .
[0088]
As described above, even in the two cylinder tubes 2 fastened by the connecting tool of the present modified example, reliable fastening without any protruding portion other than the head 64 of the bolt screw from their surfaces is possible.
[0089]
FIG. 18A is an overall perspective view of an H fitting which is a fifth modification of the connecting tool, and FIG. 18B is installed in a pair of facing communicating grooves 8 and engaging grooves 9 in a fastened state. It is a front sectional view of the H fitting which was done. The H bracket 73 of the present embodiment fastens an intermediate position when the length of the member to be fastened and the communication groove 8 and the engagement groove 9 are longer than usual in comparison with the width of each groove. It is an intermediate connecting tool. In these drawings, members and shapes common to those of the fastening assembly shown in FIG. 2 are denoted by the same reference numerals.
[0090]
As shown in FIG. 18, the H fitting 73 is integrally formed in such a manner that two engaging pieces 10 insertable into the engaging groove 9 are vertically symmetrical in the figure with the connecting portion 11 interposed therebetween. Is formed. The H bracket 73 having such a configuration can be entirely inserted into a set of the communication groove 8 and the engagement groove 9 which communicate with each other. As shown in the figure, a screw hole 74 that penetrates the H fitting 73 in a direction perpendicular to the outer surface 37 of each engagement piece 10 is formed, and a set screw 75 is mounted inside the screw hole 74. When this intermediate connector is used, it is desirable that an accommodation groove 77 is formed in the bottom surface 12 of the engagement groove, as shown in FIG.
[0091]
As a mounting procedure, first, the engaging piece 10 on the side where the tip end 76 of the set screw is located is inserted into the engaging groove 9 of the lower cylinder tube 2b in FIG. 18 from the opening at the end of the engaging groove 9. The engagement groove 9 is located at a predetermined position in the middle in the longitudinal direction. Then, the set screw 75 is turned in to bring the tip end 76 of the set screw into contact with the bottom surface 12 of the engagement groove, and the fastening surface 10c of the engagement piece 10 is brought into contact with the engagement surface 9c of the engagement groove 9 by the reaction force. To fix the H fitting 73 to the communication groove 8 and the engagement groove 9 of the one cylinder tube 2b. At this time, the half of the connecting portion 11 and one engagement piece 10 are in a state of protruding from the connecting surface 5c. The other cylinder tube to be fastened (the upper cylinder tube 2a in FIG. 18 (B)) is brought into contact between the connection surfaces 5c, and the H fitting 73 is inserted into the communication groove 8 and the engagement groove 9 to extend in the longitudinal direction. The intermediate position can be fastened by sliding.
[0092]
As described above, according to the connecting tool of the present modified example, even if the two cylinder tubes 2 to be fastened are long in the longitudinal direction, a shift or a gap at an intermediate position between them is prevented, and secure fastening is achieved. enable.
[0093]
The present invention is not limited to the above embodiment, and can be variously modified without departing from the gist thereof. For example, in the above embodiment, only the case where the cross-sectional shape of the engagement groove 9 and the engagement piece 10 is formed to be rectangular is shown, but each of them is formed to have a width wider than the opening width Wo of the communication groove 8. However, the present invention is not limited to this, and may be, for example, a polygonal shape as shown in FIG. 19 or a semicircular shape as shown in FIG. If the engaging surface 9c and the fastening surface 10c can surely make surface contact with each other, they are not limited to those formed in parallel with the connecting surface 5c. For example, as shown in FIG. It may be formed.
[0094]
The guide unit as an attachment can be freely set by increasing or decreasing the number of fastenings as needed, and the tip plate may be appropriately formed and installed according to the number and arrangement of the rods.
[0095]
The communication groove 8 and the engagement groove 8 may not be formed in a straight line over the entire length of the member to be fastened, but may be interrupted at an intermediate position, bent at an intermediate position, or positioned at an intermediate position of the connecting surface 5c. May be partially formed.
[0096]
In addition, each of the connecting tools of the second to fifth modified examples is configured as a metal fitting which is a metal molded product, but may be a resin molded product.
[0097]
Further, in the above-described embodiment, the fluid pressure cylinder exemplifies the pneumatic cylinder using compressed air as a working fluid. However, the present invention is not limited to this. It is possible.
[0098]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since a hydraulic cylinder and an attachment can be fastened without any protruding part, it is a structure suitable for labor saving of installation space, and a hydraulic cylinder, a guide unit, a spacer block, etc. are easily and reliably provided. Since they can be fastened to each other, one or two cylinder units with guides, lifter cylinders, air chucks, double stroke cylinders, and other cylinder units can be easily assembled. In addition, since the relative positions of the two cylinder tubes and the places to be fastened can be arbitrarily and easily set and changed, it can be easily fastened by combining any fluid pressure cylinder with any guide unit. .
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a fluid pressure cylinder unit according to a first embodiment of the present invention, in which (A) is an overall perspective view before being assembled and (B) is an assembled state. It is a whole perspective view.
FIG. 2 is an enlarged perspective view of a connecting tool used to fasten between fluid pressure cylinders, and a set of a communication groove and an engagement groove in a communication state before being inserted.
FIG. 3A is a plan view of a configuration in which two side surfaces that are parallel to each other with two contacting fastening blocks are bolted to each other via an I bracket, and FIG. 3B is a front view thereof.
FIG. 4 is an overall perspective view of a pneumatic cylinder unit according to a second embodiment of the present invention, in which (A) is an overall perspective view before assembling, and (B) is an overall perspective view in an assembled state. It is.
FIG. 5 is an overall perspective view of a pneumatic cylinder unit according to a third embodiment of the present invention, in which (A) is an overall perspective view before assembling, and (B) is an overall perspective view in an assembled state. It is a perspective view.
FIG. 6 is an overall perspective view of a pneumatic cylinder unit according to a fourth embodiment of the present invention, in which (A) is an overall perspective view before assembly and (B) is an overall assembly state. It is a perspective view.
FIG. 7 is an overall perspective view of a pneumatic cylinder unit according to a fifth embodiment of the present invention, in which (A) is an overall perspective view before assembly and (B) is an overall assembly state. It is a perspective view.
FIG. 8 is an overall perspective view of a single guide cylinder with a table.
FIG. 9 is an overall perspective view of a pneumatic cylinder unit according to a sixth embodiment of the present invention, in which (A) is an overall perspective view before assembly and (B) is an overall assembly state. It is a perspective view.
FIG. 10 is an overall perspective view of a pneumatic cylinder unit according to a seventh embodiment of the present invention, in which (A) is an overall perspective view before assembling, and (B) is an overall perspective view in an assembled state. It is a perspective view.
FIG. 11 is an overall perspective view of a modified example of a spacer block.
FIG. 12 is an overall perspective view of a pneumatic cylinder unit according to an eighth embodiment of the present invention, wherein (A) is an overall perspective view before assembly and (B) is an overall assembly state. It is a perspective view.
FIG. 13 is an overall perspective view of a pneumatic cylinder unit according to a ninth embodiment of the present invention, in which (A) is an overall perspective view before assembling, and (B) is an overall assembling state. It is a perspective view.
FIG. 14A is an overall perspective view of a tilt stopper which is a first modification of the connecting tool, and FIG. 14B is a state in which the tilt stopper is inserted into a pair of facing communication grooves and engagement grooves. (C) is a sectional view in the insertion direction along line 14C-14C in (B).
FIG. 15A is an overall perspective view of an enlarged dividing metal fitting as a second modified example of the connecting tool, and FIG. 15B is an enlarged dividing metal installed inside a pair of communicating grooves and engaging grooves facing each other. It is a front view of metal fittings, (C) is an insertion direction sectional view which follows the 15C-15C line of (B).
FIG. 16A is an overall perspective view of a wedge split metal fitting which is a third modification of the connecting tool, and FIG. 16B is installed in a pair of facing communicating grooves and engaging grooves in a fastened state. It is a front view of the wedge division | segmentation metal fitting, (C) is sectional drawing which follows the 16C-16C line in (D), (D) is insertion direction sectional drawing along the 16D-16D line of (B).
FIG. 17A is an overall perspective view of an inclined split metal fitting which is a fourth modification of the connecting tool, and FIG. 17B is installed in a pair of facing communicating grooves and engaging grooves in a fastened state. It is a front view of the inclined divided metal fitting, (C) is a sectional view along line 17C-17C in (D), and (D) is a sectional view in the insertion direction along line 17D-17D in (B).
FIG. 18A is an overall perspective view of an H fitting which is a fifth modification of the connecting tool, and FIG. 18B is installed in a pair of facing communicating grooves and engaging grooves in a fastened state. It is a front sectional view of H metal fittings.
FIG. 19 is a front view of an example in which an engagement groove has a polygonal cross-sectional shape.
FIG. 20 is a front view of an example in which an engagement groove has a semicircular cross-sectional shape.
FIG. 21 is a front view of an example in which an engagement surface is not parallel to a connection surface.
[Explanation of symbols]
1a, 1b Pneumatic cylinder (fluid pressure cylinder)
2,2a, 2b cylinder tube
3 end face
4 Piston rod
5 sides
5c Connecting surface
6 insertion connector (connector)
7a-7h Tip plate (connecting member)
8 Communication groove
9 Engagement groove
9c engagement surface
10 Engagement piece
10c fastening surface
11 Connecting part
12 Bottom of engagement groove
14a to 14d guide unit
15 Guide rod
16 Guide block
17 Chuck plate
18 gripper
19 Support rod
20 Support rod hole
21 Guide rail
22 Guide plate
23a, 23b slide table
24 rail groove
25 Spacer block
26 Modification of Spacer Block
32 Incline stopper (connector)
33 Joining part
34 Connecting groove
35 slope
36 screw hole
37 Outside
38 Tip of Set Screw
39 Set screw (fastening member)
40 Positioning bracket
41 Locking Claw
42 Enlarged split bracket (connector)
45 Engagement piece split groove
46 Outer elastic deformation part
47 Inside elastic deformation part
48 screw hole
49 Flat head screw (fastening member)
56 Wedge split bracket (connector)
57 wedge fitting
58 Clamping bracket (fastening member)
59,60 slope
61 Passage hole
62 screw hole
63 bolt screw (fastening member)
67 Inclined split bracket (connector)
68a, 68b Trapezoidal bracket
69a, 69b Inclined surface
70 Passage hole
71 Screw hole
72a, 72b connecting part
73 H bracket (connector)
74 screw hole
75 Set screw (fastening member)
77 receiving groove
101a, 101b fastening block
102 I bracket
103 insertion engagement member
104 Screw hole
105 bolt screw
106 bolt screw head
Wo opening width
Do opening depth
Wi internal width
Di internal depth
Wc connection width
Hc connection height
Wf engagement width
Hf engagement height
Wr rail width
Hr rail height

Claims (9)

A fluid pressure cylinder unit that drives a driven object in a linear direction by fluid pressure,
A piston provided with a communication groove extending in the longitudinal direction along the connection surface and an engagement surface parallel to the connection surface is provided with an engagement groove connected to the communication groove, and a piston provided with a piston rod is axially moved. A cylinder tube that reciprocates in the cylinder tube,
An attachment in which an engagement groove formed with a communication groove extending in the longitudinal direction along the connection surface in contact with the connection surface and having an engagement surface parallel to the connection surface is formed.
In a state where the cylinder tube and the attachment are brought into contact with each other at the connection surfaces with the respective communication grooves facing each other, a fastening surface is formed in a longitudinal direction and the engagement surface is formed in the engagement groove of the cylinder tube. A first engagement piece inserted in the longitudinal direction, a second engagement piece formed in the longitudinal direction with a fastening surface opposed to the fastening surface formed in the engagement groove of the attachment, and Having a connecting portion having a width smaller than the width of these engaging pieces and connecting each of the engaging pieces at a base end portion,
A fluid pressure cylinder unit, wherein the connecting member is embedded in the cylinder tube and the attachment, and connects the cylinder tube and the attachment by contacting the engaging surface and the fastening surface. 2. The hydraulic cylinder unit according to claim 1, further comprising a fastening member that elastically deforms a tip end of the engaging piece in a direction in which the fastening surfaces approach each other. 3. The fluid pressure cylinder unit according to claim 1, wherein a cross section of the cylinder tube is rectangular, and outer peripheral surfaces adjacent to each other are connection surfaces formed with the communication grooves. Cylinder unit. The hydraulic cylinder unit according to any one of claims 1 to 3, wherein the attachment is a cylinder tube similar to the cylinder tube. 5. The hydraulic cylinder unit according to claim 4, wherein a piston rod of the cylinder tube and a piston rod of the attachment are connected by a connecting member. 5. The hydraulic cylinder unit according to claim 4, wherein the two cylinder tubes are fastened with their respective piston rods reversed, and a chuck member is attached to each of the piston rods. The hydraulic cylinder unit according to claim 4, wherein a guide rail is attached to each of the cylinder tubes, and a slide table attached to a sliding body that slides along each of the guide rails is connected to each of the piston rods. A fluid pressure cylinder unit characterized in that: The fluid pressure cylinder unit according to any one of claims 1 to 3, wherein the attachment is a guide block that accommodates a guide rod so as to reciprocate in an axial direction, and the guide rod and the piston rod are connected by a connecting member. A fluid pressure cylinder unit which is connected. 9. The fluid pressure cylinder unit according to claim 8, wherein a plurality of the cylinder tubes and the attachments are fastened respectively.

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