JP2014035052A - Cylinder device, attachment member of cylinder device, attachment structure of cylinder device, and attachment method of cylinder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder device which improves the design flexibility of the cylinder device and enables easy attachment of the cylinder device to a smaller space (the downsizing), and to provide an attachment member of the cylinder device, an attachment structure of the cylinder device, and an attachment method of the cylinder device.SOLUTION: In a cylinder device 100 according to this invention, an outer peripheral surface of a cylinder tube 110 is fastened to an outer peripheral surface of a rod cover 130 by screw structures 110b, 130b so that the outer peripheral surfaces become flush. The structure facilitates the attachment of an attachment member 300.

Description

  The present invention relates to a cylinder device, a cylinder device mounting member, a cylinder device mounting structure, and a cylinder device mounting method.

  2. Description of the Related Art Conventionally, various developments have been made regarding a cylinder device, a cylinder device mounting member, a cylinder device mounting structure, and a cylinder device mounting method. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 06-026570), a piston mounting portion in which a piston is inserted into a piston mounting portion formed at a piston rod rear end and protrudes from the inserted piston rear end. In the hydraulic cylinder configured to fix the piston to the piston rod by screwing the nut into the male thread portion, one or more recesses are formed at the rear end edge of the nut, and engage with the recesses. There is disclosed a hydraulic cylinder characterized in that a locking member is arranged and the locking member is fixed to an end of a piston rod so that the locking member prevents the nut from loosening.

Japanese Patent Application Laid-Open No. 06-026570

  As described above, various developments have been made on the cylinder device and it is used in various fields. In recent years, downsizing is required in various equipment and the like. Based on this tendency, the cylinder device is also required to be downsized.

  An object of the present invention is to provide a cylinder device, a cylinder device mounting member, a cylinder device mounting structure, and a cylinder device that can increase the degree of design freedom of the cylinder device and can be installed in a space-saving (miniaturized) manner. It is to provide a method for mounting a cylinder device.

(1)
A cylinder device according to one aspect includes a piston, a piston rod provided in the piston, a cylinder tube that accommodates the piston therein, a rod cover provided in the cylinder tube, a head cover provided in the cylinder tube, and a cylinder tube And a screw fastening structure for screw-fastening the rod cover, and the outer peripheral surface of the cylinder tube and the outer peripheral surface of the rod cover are formed flush with each other.

  In the cylinder device, the outer peripheral surface of the cylinder tube and the outer peripheral surface of the rod cover are fastened by a screw fastening structure. As a result, the outer shape of the cylinder device is made uniform, and the design freedom of the cylinder device can be increased.

(2)
A cylinder device according to a second aspect of the present invention is a cylinder device according to one aspect, further including a retainer for fixing the rod cover, wherein the outer peripheral surface of the retainer is formed flush with the outer peripheral surface of the rod cover. Is preferred.

  In this case, the outer shape of the cylinder device including the retainer is made uniform, and the design freedom of the cylinder device can be increased.

(3)
A cylinder device according to a third aspect of the invention is a cylinder device according to one aspect or according to the second aspect of the invention, further comprising a screw fastening structure for screwing the cylinder tube and the head cover, and an outer peripheral surface of the cylinder tube And the outer peripheral surface of the head cover are preferably formed flush with each other.

  In the cylinder device, the outer peripheral surface of the cylinder tube and the outer peripheral surface of the head cover are fastened by a screw fastening structure. As a result, the outer shape of the cylinder device is made uniform, and the design freedom of the cylinder device can be increased.

(4)
An attachment member of a cylinder device according to another aspect is the attachment member of the cylinder device according to one aspect or the second and third inventions, and is for internal fitting for holding at least a part of a rod cover and a cylinder tube. It has the following hole shape.

  In this case, the rod cover and the cylinder tube of the cylinder device are formed flush with each other, and a part of the cylinder tube can be held by the mounting member.

  That is, unlike the conventional case, since the rod cover and the cylinder tube are not fixed by welding, the projection shape at the connecting portion of the rod cover and the cylinder tube does not occur. As a result, up to a part of the cylinder tube can be held by the hole shape of the mounting member.

  Therefore, by holding the large diameter portion of the cylinder tube, the mounting member can be reduced in size, and the total mounting length of the cylinder device can be shortened.

(5)
A mounting structure for a cylinder device according to another aspect includes the cylinder device according to any one of claims 1 to 3 and the mounting member according to claim 4, wherein a hole shape for internal fitting of the mounting member is provided. At least a rod cover and a part of a cylinder tube are fitted together.

In this case, at least a part of the rod cover and the cylinder tube can be held by the mounting member.
Therefore, by holding the large-diameter portion of the cylinder tube, the mounting member can be reduced in size, and the cylinder device can be securely held.

(6)
A cylinder device mounting method according to another aspect includes a hole shape of the mounting member according to claim 4, a rod cover of the cylinder device according to any one of claims 1 to 3, and at least one of the cylinder tubes. The part is fitted inside.

In this case, a part of the cylinder tube can be held by the mounting member.
Therefore, by holding the large diameter portion of the cylinder tube, the attachment member can be reduced in size, and the cylinder device can be easily attached.

  According to the present invention, the outer shape of the cylinder device is made uniform, the design freedom of the cylinder device can be increased and the size can be reduced, and the cylinder device can be easily attached.

It is typical sectional drawing which shows an example of the cylinder apparatus which concerns on one embodiment of this invention. It is a schematic diagram for demonstrating the state which attaches an attachment member to a cylinder apparatus. It is typical sectional drawing for demonstrating the state which attaches an attachment member to a cylinder apparatus.

  Embodiments according to the present invention will be described below with reference to the drawings. In the present embodiment, description will be made using a gas cylinder as an example of a cylinder device. In addition, it is not limited to a gas cylinder, It can apply also to a hydraulic cylinder and other arbitrary cylinders.

(First embodiment)
First, FIG. 1 is a schematic cross-sectional view showing an example of a cylinder device 100 according to a first embodiment of the present invention.

<Description of cylinder device>
As shown in FIG. 1, the cylinder device 100 includes a cylinder tube 110, a head cover 120, a rod cover 130, a rod bush 140, a piston 150, a piston rod 160, and a retainer 170.

  The cylinder device 100 in FIG. 1 mainly has a columnar shape extending in one direction, and the piston 150 advances and retreats in one direction from the central portion (axial center) on one end side of the columnar shape. As a result, the piston rod 160 moves back and forth in the direction of the arrow.

  A screw structure 110a is provided on one end side of the cylinder tube 110 of the cylinder device 100, and a head cover 120 having a screw structure 120a corresponding to the screw structure 110a is attached. Here, each of the screw structures 110a and 120a includes one and the other of male and female screws.

  A piston 150 is accommodated in the cylinder tube 110. A piston rod 160 is attached to the piston 150.

  A screw structure 110b is provided on the other end side of the cylinder tube 110 of the cylinder device 100, and a rod cover 130 having a screw structure 130b corresponding to the screw structure 110b is attached. Here, each of the screw structures 110b and 130b includes one and the other of male and female screws.

  A rod bush 140 is disposed in the recess 135 of the rod cover 130. Next, the retainer 170 is attached to the rod cover 130. The retainer 170 is screwed to the rod cover 130 in order to fix the projection 145 of the rod bush.

  As shown in FIG. 1, in the cylinder device 100 according to the present embodiment, the connection outer peripheral surface of the rod cover 130 and the cylinder tube 110 is formed flush with each other. As a result, since the convex shape is not formed from the outer peripheral surface of the cylinder apparatus 100, the design freedom of the cylinder apparatus 100 can be increased.

<Description of cylinder device and mounting member>
2 and 3 are a schematic view and a schematic cross-sectional view for explaining a state in which the attachment member 300 is attached to the cylinder device 100. FIG.

  As shown in FIGS. 2 and 3, the attachment member 300 is attached to the cylinder device 100. Hereinafter, the details of the attachment member 300 will be described.

(Mounting member)
The attachment member 300 has an internally fitted hole shape 320, a rod bush hole shape 330, and screw holes 351a to 351d. The outer shape of the attachment member 300 is a substantially prismatic member. The attachment member 300 is attached and fixed to the retainer 170 by screw holes 351a to 351d. In the present embodiment, the screw holes 351a to 351d have been described, but any other arbitrary number may be provided. Moreover, the external shape of the attachment member 300 is not limited to a prismatic member.

  As shown in FIG. 3, the hole shape 320 of the attachment member 300 holds the outer periphery of the retainer 170, the outer periphery of the rod cover 130, and a part of the cylinder tube 110. In this case, the cylinder tube 110 can be held along the maximum outer diameter φM. Moreover, since the rod cover 130 and the cylinder tube 110 are held along the extending direction of the cylinder device 100, the length LF of the hole shape 330 for the rod bush of the mounting member 300 can be shortened.

  As a result, the size of the attachment member 300 can be reduced. That is, since the outermost diameter portion of the cylinder device 100 is held by the mounting member 300 in FIG. 3, the holding force of the mounting member 300 can be held by the hole shape 320 of the mounting member 300.

  Further, in the cylinder device 100 according to the present embodiment, the retainer 170 is provided with holes corresponding to the screw holes 351a to 351d of the mounting member 300, and the screw structures 110b and 130b are provided. The rod cover 130 and the cylinder tube 110 can be flush with each other.

  As described above, in the present embodiment, in the cylinder device 100, the outer peripheral surface of the cylinder tube 110 and the outer peripheral surface of the rod cover 130 are fastened by the screw structures 110b and 130b. As a result, the outer shape of the cylinder device 100 is made uniform, and the degree of freedom in designing the cylinder device 100 can be increased.

  Further, the outer shape of the cylinder device 100 including the retainer 170 is made uniform, and the degree of freedom in designing the cylinder device 100 can be increased.

  Furthermore, the rod cover 130 and the cylinder tube 110 of the cylinder device 100 are formed flush with each other, and a part of the cylinder tube 110 can be held by the mounting member 300.

  That is, unlike the conventional case, the rod cover 130 and the cylinder tube 110 are not fixed by welding, so that the projection shape at the connecting portion of the rod cover 130 and the cylinder tube 110 does not occur. As a result, up to a part of the cylinder tube 110 can be held by the hole shape of the attachment member 300.

  Therefore, by holding the maximum outer diameter φM of the cylinder tube 110 without using a flange or the like, the mounting member 300 can be reduced in size, and the total mounting length of the cylinder device 100 can be shortened.

  In the cylinder device 100 according to the present embodiment, the piston 150 corresponds to a piston, the piston rod 160 corresponds to a piston rod, the cylinder tube 110 corresponds to a cylinder tube, the rod cover 130 corresponds to a rod cover, The head cover 120 corresponds to the head cover, the screw structures 110a and 120a and the screw structures 110b and 130b correspond to the screw fastening structure, the retainer 170 corresponds to the retainer, the mounting member 300 corresponds to the mounting member of the cylinder device, and the hole shape. 320 corresponds to a hole shape for internal fitting.

  In addition, in said embodiment, although piston rod 160 single-piece | unit was described, it is not limited to this, You may provide trunnion connection etc. in the front-end | tip of piston rod 160. FIG. Further, an arbitrary part such as a trunnion connection may be provided instead of the retainer 170.

  The preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

DESCRIPTION OF SYMBOLS 100 Cylinder apparatus 150 Piston 160 Piston rod 110 Cylinder tube 130 Rod cover 120 Head cover 110a, 120a, 110b, 130b Screw structure 170 Retainer 300 Mounting member 320 Hole shape

(1)
A cylinder device according to one aspect includes a piston, a piston rod provided in the piston, a cylinder tube that accommodates the piston therein, a rod cover provided in the cylinder tube, a head cover provided in the cylinder tube, and a cylinder tube A screw fastening structure for screwing the rod cover, a rod bush for holding the piston rod, and a retainer for fixing the rod cover and the rod bush, and an outer peripheral surface of the cylinder tube, and a rod cover The outer peripheral surface and the outer peripheral surface of the retainer are formed flush with each other.

In the cylinder device, the outer peripheral surface of the cylinder tube, the outer peripheral surface of the rod cover, and the outer peripheral surface of the retainer are fastened by a screw fastening structure. As a result, the outer shape of the cylinder device is made uniform, and the design freedom of the cylinder device can be increased.

( 2 )
Cylinder device according to the second invention is a slave bovine cylinder device to one aspect, the cylinder tube, a head cover further includes a screw fastening structure for screw fastening, and a peripheral surface of the cylinder tube, the head cover It is preferable that the outer peripheral surface be formed flush.

( 3 )
An attachment member of a cylinder device according to another aspect is the attachment member of the cylinder device according to one aspect or the second invention, and is for internal fitting for holding at least a part of the retainer, the rod cover, and the cylinder tube. It has the following hole shape.

In this case, the retainer of the cylinder device, the rod cover and the cylinder tube is formed flush, it can hold up part of the cylinder tube by the mounting member.

( 4 )
A mounting structure for a cylinder device according to another aspect includes the cylinder device according to claim 1 or 2 and the mounting member according to claim 3 , wherein at least a retainer, a rod cover, and a hole shape for internal fitting of the mounting member are provided. A part of the cylinder tube is fitted together.

In this case, at least a part of the retainer, the rod cover, and the cylinder tube can be held by the mounting member.
Therefore, by holding the large-diameter portion of the cylinder tube, the mounting member can be reduced in size, and the cylinder device can be securely held.

( 5 )
Mounting method for a cylinder apparatus according to still another aspect, the hole shape of claim 3, wherein the mounting member, at least a retainer cylinder device according to any one of claims 1 or 2, the rod cover and sheet cylinder tube It is intended to fit up to a part of.

Claims (6)

A piston,
A piston rod provided on the piston;
A cylinder tube that houses the piston therein;
A rod cover provided on the cylinder tube;
A head cover provided on the cylinder tube;
A screw fastening structure for screwing the cylinder tube and the rod cover,
A cylinder device, wherein an outer peripheral surface of the cylinder tube and an outer peripheral surface of the rod cover are formed flush with each other. A retainer for fixing the rod cover;
The cylinder device according to claim 1, wherein an outer peripheral surface of the retainer is formed flush with an outer peripheral surface of the rod cover. A screw fastening structure for screwing the cylinder tube and the head cover;
The cylinder device according to claim 1 or 2, wherein an outer peripheral surface of the cylinder tube and an outer peripheral surface of the head cover are formed flush with each other. A cylinder device mounting member for mounting the cylinder device according to any one of claims 1 to 3,
An attachment member for a cylinder device, characterized by having a hole shape for internal fitting for holding at least a part of the rod cover and the cylinder tube. The cylinder device according to any one of claims 1 to 3,
The mounting member according to claim 4,
An attachment structure for a cylinder device, wherein at least a part of the rod cover and the cylinder tube are fitted in a hole shape for internal fitting of the attachment member. The hole shape of the mounting member according to claim 4, wherein at least the rod cover and a part of the cylinder tube of the cylinder device according to any one of claims 1 to 3 are internally fitted. How to install the cylinder device.

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