JPH058001U - Aki Yumulator - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] A resin bellows is simply placed inside the shell. [Structure] The shell body (11A) has an opening made of resin bellows.
It is expanded prior to the insertion of the opening of (13) and the shell lid (11B), and is compressed and deformed after the opening of the resin bellows (13) and the shell lid (11B) are inserted. [Effect] The resin bellows can be easily attached to the shell, and thus the resin bellows having a high gas shielding efficiency can be easily adopted, resulting in miniaturization and high quality.

Description

[Detailed description of the device]

[0001]

[The purpose of the device]

[0002]

[Industrial applications]

 The present invention relates to an accumulator in which an inner space of a shell is divided into a liquid chamber and a gas chamber by a resin bellows, and particularly, the opening of the shell body is inserted before the opening of the resin bellows and the shell lid are inserted. The present invention relates to an accumulator which is expanded and is compressed and deformed after inserting an opening of a resin bellows and a shell lid.

[0003]

[Prior Art]

 Conventionally, as this type of accumulator, before the shell lid is attached to the opening of the shell body, the thickness formed on the inner peripheral surface of the opening of the rubber bellows is different from the groove formed on the peripheral surface of the shell lid. It has been proposed that the mounting part of the is inserted while resisting its elasticity.

[0004]

[Problems to be solved]

 However, in the conventional accumulator, the elasticity of the rubber bellows was used to engage the thick mounting portion with the groove in the shell lid, so (i) use the resin bellows instead of the rubber bellows. In this case, the elasticity of the resin bellows is smaller than that of the rubber bellows, and there is a drawback that it cannot be adopted. Consequently, (ii) a simple method of arranging the resin bellows inside the shell has been provided.

Therefore, in order to eliminate this drawback, the present invention is such that the opening of the shell body is expanded prior to the insertion of the opening of the resin bellows and the shell lid, and the opening of the resin bellows and the shell lid are It provides an accumulator that is compressed and deformed after insertion of the.

[0006]

[Device configuration]

[0007]

[Means for solving problems]

 The solution provided by the present invention is to solve the problem in an accumulator in which the inner space of the shell is divided into a liquid chamber and a gas chamber by a resin bellows, in which the shell is (a) the opening part of the resin bellows (13). By inserting the shell lid (11B) and the opening of the resin bellows (13) together with the shell lid (11B), the expanded opening is compressed and deformed. An accumulator characterized by including a shell body (11A) that holds the opening of the resin bellows (13) in cooperation with the shell lid (11B). ..

[0008]

[Action]

 The accumulator according to the present invention is an accumulator in which the inner space of the shell is divided into a liquid chamber and a gas chamber by a resin bellows, as clearly shown in the above [Solution to Problem] section. The shell is inserted into (a) the shell lid placed in the opening of the resin bellows, and (b) the opening of the resin bellows is inserted into the shell lid and then expanded. By compressing and deforming the shell, the shell of the resin bellows, which holds the opening in the resin bellows in cooperation with the shell lid, is included. It has a function of ensuring a simple mounting procedure, and eventually (ii) has a function of enabling the use of a resin bellows having a high gas shielding efficiency, and consequently (iii) has a function of achieving miniaturization and high quality. ..

[0009]

【Example】

 Next, an accumulator according to the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments thereof.

However, the embodiments described below are provided for facilitating or facilitating the understanding of the present invention, and not for limiting the present invention.

In other words, each element disclosed in the embodiments described below includes all design changes and equivalent replacements within the spirit and technical scope of the present invention.

(Description of the accompanying drawings)

FIG. 1 is a cross-sectional view showing an embodiment of an accumulator according to the present invention, in which a liquid inlet / outlet hole 11a is formed in a shell body 11A and a gas sealing hole 11d is formed in a shell lid 11B. The case where it is formed is shown.

FIG. 2 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG. 1, showing a state in which the liquid inlet / outlet member 11b is attached to the liquid inlet / outlet hole 11a of the shell body 11A. ..

FIG. 3 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG. 1, in which the liquid inlet / outlet member 11b is attached to the liquid inlet / outlet hole 11a of the shell body 11A, and then the opening 11c is formed. The expanded state is shown.

FIG. 4 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG. 1, showing a state in which the shell lid 11B is attached to the opening 13a of the resin bellows 13.

FIG. 5 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG. 1, in which the shell lid 11B is attached to the opening 13a of the resin bellows 13 and then the shell body 11A is expanded. The inserted state is shown in the opened opening 11c.

(Structure of Example)

First, referring to FIG. 1, the configuration of an embodiment of the accumulator according to the present invention will be described in detail.

Reference numeral 10 denotes an accumulator according to the present invention, which has a tubular liquid inlet / outlet member (a liquid inlet / outlet member 11a) formed with a liquid inlet / outlet hole 11a so that the liquid inlet / outlet hole 11a can communicate with a liquid source (not shown). The shell 11 is provided with a shell body 11A to which a so-called "oil port" 11b is attached by welding, and a shell lid 11B inserted into an opening 11c of the shell body 11A. The liquid inlet / outlet member 11b is formed with a threaded portion 11b ^{* on} the peripheral surface thereof to facilitate communication with the liquid source.

The accumulator 10 according to the present invention also has an opening 13a sandwiched between the shell body 11A and the shell lid 11B so as to secure a liquid chamber 12A between the shell body 11A and the shell body 11A. Moreover, a resin bellows 13 for securing a gas chamber 12B between the shell lid 11B and the shell lid 11B is provided.

The resin bellows 13 has grooves 13b and 13c formed on the outer peripheral surface and the inner peripheral surface of the opening 13a, respectively, and seals between the inner peripheral surface of the opening 11c of the shell body 11A. O-rings 14A and 14B are provided to ensure a seal between the outer peripheral surface of the shell lid 11B and the shell lid 11B. The resin bellows 13 also has an annular ridge 13d formed in the center, and when the liquid pressure of the liquid source becomes lower than the pressure of the gas enclosed in the liquid chamber 12B, the inner peripheral surface of the shell body 11A. The liquid is prevented from being excessively discharged from the liquid chamber 12A by being abutted against.

(Assembly of Example)

Further, referring to FIGS. 1 to 5, an assembling procedure of one embodiment of the accumulator according to the present invention will be briefly described.

In the accumulator 10 according to the present invention, first, the liquid inlet / outlet member 11b is attached to the outer peripheral surface of the shell body 11A by welding so that the liquid inlet / outlet hole 11a can communicate with a liquid source (not shown). (See Figure 2).

The shell body 11A to which the liquid inlet / outlet member 11b is attached has its opening 11c expanded by an appropriate expansion means (not shown) by an appropriate amount (see FIG. 3).

A resin bellows 13 having an opening 13a attached to the peripheral portion of the shell lid 11B is inserted from the opening 11c into the shell body 11A having the expanded opening 11c (FIG. 4, FIG. (See Figure 5).

After that, the opening 11c of the shell body 11A is compressed and deformed (see FIG. 1).

After the opening 11c of the shell body 11A is compressed and deformed, a pressurized gas (for example, nitrogen gas) is appropriately supplied to the gas chamber 12B through the gas sealing hole 11d of the shell lid 11B (see FIG. 1).

Finally, the sealing member 11e is inserted and welded to the gas sealing hole 11d of the shell lid 11B (see FIG. 1).

The accumulator 10 according to the present invention is used by connecting the liquid inlet / outlet member 11a to a liquid source (not shown) after being assembled as described above.

(Operation of Example)

Further, referring to FIG. 1, the operation of one embodiment of the accumulator according to the present invention will be described in detail.

When the liquid inlet / outlet member 11b of the accumulator 10 according to the present invention is communicated with the liquid source, if the liquid pressure of the liquid source is a predetermined value that exceeds the gas pressure in the gas chamber 12B, the shell body 11A liquid supplied to the liquid chamber 12 a as indicated by the arrow X ₁ through the formed liquid inflow and outflow hole 11a is, while resisting the charged gas pressure in the gas chamber 12B, arrows resin bellows 13 to the gas chamber 12B side The liquid chamber 12A is expanded by moving it as indicated by Y ₁ . Along with this, the liquid given from the liquid inlet / outlet hole 11a as indicated by the arrow X ₁ is sucked into the liquid chamber 12A. When the resin bellows 13 moves to a position where the liquid pressure of the liquid chamber 12A (that is, the liquid pressure of the liquid source) opposes the enclosed gas pressure of the gas chamber 12B (for example, the position shown in FIG. 1; Stop moving in _one direction.

When the liquid pressure of the liquid source increases from a predetermined value exceeding the gas pressure filled in the gas chamber 12B, the liquid pressure is increased to a liquid chamber 12A through a liquid inlet / outlet hole 11a formed in the shell body 11A as indicated by an arrow X _1. The liquid supplied to the resin chamber moves the resin bellows 13 from the position shown in FIG. 1 to the gas chamber 12B side as indicated by the arrow Y ₁ while resisting the gas pressure in the gas chamber 12B. 12A is expanded. Along with this, the liquid given from the liquid inlet / outlet hole 11a as indicated by the arrow X ₁ is sucked into the liquid chamber 12A, and alleviates the increase in the liquid pressure of the liquid source.

On the other hand, when the liquid pressure of the liquid source is reduced from a predetermined value exceeding the gas pressure filled in the gas chamber 12B, it is indicated by an arrow X ₁ through the liquid inlet / outlet hole 11a formed in the shell body 11A. The liquid supplied to the liquid chamber 12A cannot withstand the pressure of the enclosed gas in the gas chamber 12B. Therefore, the resin bellows 13 is moved from the position shown in FIG. 1 to the liquid chamber 12A side as shown by an arrow Y ₂ to a position where the liquid pressure in the liquid chamber 12A is in opposition to the enclosed gas pressure in the gas chamber 12B. , The liquid chamber 12A is reduced. Along with this, the liquid previously sucked into the liquid chamber 12A is discharged from the liquid chamber 12A through the liquid inlet / outlet hole 11a as indicated by the arrow X ₂ , and the decrease in the liquid pressure of the liquid source is reduced. To do.

When the liquid pressure of the liquid source becomes lower than the pressure of the gas enclosed in the gas chamber 12B, it is supplied to the liquid chamber 12A in advance through the liquid inlet / outlet hole 11a formed in the shell body 11A as indicated by arrow X _1. The liquid cannot withstand the pressure of the gas filled in the gas chamber 12B. Therefore, the resin bellows 13 is moved to the liquid chamber 12A side as indicated by the arrow Y ₂ until it comes into contact with the shell body 11A.

By the above operation, the accumulator 10 according to the present invention can alleviate the fluctuation of the liquid pressure of the liquid source that exceeds the operation lower limit value (that is, the gas pressure filled in the gas chamber 12B).

(Modification) In the above description, only the case where the liquid inlet / outlet hole 11a is formed in the shell body 11A and the gas sealing hole 11d is formed in the shell lid 11B has been described. However, the present invention is not limited to this, and also includes the case where a gas sealing hole is formed in the shell body and a liquid inlet / outlet hole is formed in the shell lid.

[0040]

[Effect of the device]

 As is clear from the above, the accumulator according to the present invention is an accumulator in which the inner space of the shell is divided into a liquid chamber and a gas chamber by a resin bellows, as clearly shown in the section of [Solution to Problem]. In particular, the shell has (a) a shell lid that is placed in the opening of the resin bellows, and (b) an opening that is expanded after the opening of the resin bellows is inserted together with the shell lid. By compressing and deforming, the shell of the resin bellows that holds the opening of the resin bellows in cooperation with the shell lid is included. (I) The resin bellows for the shell It has the effect of ensuring a simple installation procedure, and (ii) it has the effect of being able to adopt a resin bellows with high gas shielding efficiency, and as a result (iii) it can achieve miniaturization and high quality. Have an effect

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an accumulator according to the present invention.

FIG. 2 is a cross-sectional view showing a manufacturing procedure of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG.

FIG. 4 is a sectional view showing a manufacturing procedure of the embodiment shown in FIG.

5 is a cross-sectional view showing the manufacturing procedure of the embodiment shown in FIG.

[Explanation of symbols] 10・ ・ ・ ・ ・ ・ Accumulator 11 ・ ・ ・ ・ Shell 11A・ ・ ・ Shell body 11a ・ ・ ・ ・ ・ ・ ・ ・ ・ Liquid inlet / outlet hole 11b ・ ・ ・ ・・ Liquid inlet / outlet member 11b ^*・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Screw 11c ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Opening 11B ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ Shell lid 11d ・ ・ ・ ・ ・ ・ ・ ・ ・ Gas filling hole 11e ・ ・ ・ ・ ・ ・ ・ ・ ・ Seal member 12A ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Liquid chamber 12B ・ ・ ・ ・ Gas chamber 13 ・ ・ ・ ・ ・ ・・ ・ ・ ・ Resin bellows 13a ・ ・ ・ ・ ・ ・ ・ ・ ・ Openings 13b, 13c ・ ・ ・ ・ ・ ・3d ····································· O-ring

Claims (1)

[Claims for utility model registration] [Claim 1] In an accumulator in which the inner space of the shell is divided into a liquid chamber and a gas chamber by a resin bellows, the shell is (a) the opening portion of the resin bellows (13). (B) The resin bellows (13) opening is inserted together with the shell lid (11B), and then the expanded opening is compressed and deformed. Open the bellows (13) made of shell with shell lid
The shell body (11B) that is retained in the opening in cooperation with (11B)
A) An accumulator characterized by including and.