JPH0682402U - Holder for accumulator - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the bladder from falling off by engaging the peripheral step of the bladder, which is continuous with the other end of the holding part and folded back to the outer peripheral surface side of the holding part. Exclude the folded part of from the holder. [Structure] By the outer peripheral surface of the holding portion (12) which is continuous with the inner peripheral surface side end of the fixed portion (11) and is bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed portion (11) Hold the bladder (22) by locking the inner peripheral surface (22a) of the bladder (22) while pressing the inner peripheral surface (21a) of the peripheral part of the bladder (22) toward the inner peripheral surface of the shell (21). To do. [Effect] It is possible to eliminate the step of bending the folded portion toward the outer peripheral surface side of the holding portion, simplify the manufacturing process of the holder, and reduce the manufacturing time and manufacturing cost of the holder.

Description

[Detailed description of the device]

[0001]

[The purpose of the device]

[0002]

[Industrial applications]

 The present invention relates to an accumulator holder, and more particularly to an accumulator holder, which is connected to an end portion on the inner peripheral surface side of a fixed portion and is bent by an outer peripheral surface of a holding portion bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed portion. The present invention relates to an accumulator holder which holds the bladder by pressing the inner peripheral surface of the peripheral edge of the bladder toward the inner peripheral surface of the shell and locking the inner peripheral surface of the peripheral edge of the bladder.

[0003]

[Prior art]

 Conventionally, as this type of accumulator holder, the inner peripheral surface of the bladder is fixed to the inner peripheral surface of the bladder by the outer peripheral surface of the holding section that is connected to the inner peripheral surface side end of the fixed section and is bent at 90 degrees to the fixed section. While pressing against the inner peripheral surface of the shell, the folding part that is continuous with the other end of the holding part and is folded back to the outer peripheral surface of the holding part engages the peripheral step part of the bladder to lock the bladder. The one to hold was proposed.

[0004]

[Problems to be solved]

 However, in the conventional accumulator holder, the bladder is prevented from falling off by locking the peripheral step portion of the bladder by the folded portion that is continuous with the other end portion of the holding portion and folded back to the outer peripheral surface side of the holding portion. Since it was prevented, (i) there is a drawback that a step of forming the folded portion on the outer peripheral surface side of the holding portion is required to be formed, and (ii) there is a drawback that many manufacturing steps cannot reduce the manufacturing cost. It was

Therefore, in order to eliminate these drawbacks, the present invention is continued to the inner peripheral surface side end of the fixed portion and bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed portion. The accumulator holder that holds the bladder by pressing the inner peripheral surface of the peripheral portion of the bladder toward the inner peripheral surface of the shell by the outer peripheral surface of the holding portion and retaining the inner peripheral surface of the peripheral portion of the bladder is not provided. It is a thing.

[0006]

[Constitution of device]

[0007]

[Means for solving problems]

 The means for solving the problems provided by the present invention is to provide an accumulator holder in which a bladder for partitioning the internal space of the shell into a gas chamber and a liquid chamber is provided on the inner peripheral surface of the shell. ) A fixing part (11) for fixing the bladder arrangement position by locking the outer peripheral part of the upper surface to the locking step part formed on the inner peripheral surface of the shell, and (b) fixing part (11 ) Is connected to the end on the inner peripheral surface side and is bent to the outer peripheral surface side at an angle of less than 90 degrees with respect to the fixed part (11). A holding part (12) for holding the bladder by locking the inner peripheral surface of the peripheral part of the bladder while pressing it toward (1), and (c) the holding part (12) connected to the other end of the holding part (12). The holder for an accumulator characterized in that it is provided with a folded-back portion (13) that is folded back on the inner peripheral surface side of ().

[0008]

[Action]

 In the accumulator holder according to the present invention, a bladder for partitioning the internal space of the shell into a gas chamber and a liquid chamber is provided on the inner peripheral surface of the shell, as clearly shown in the above [Solution to Problem] section. An accumulator holder that is installed, and in particular, (a) fixes the position of the bladder by locking the outer periphery of the upper surface to the locking step formed on the inner peripheral surface of the shell. (B) It is connected to the inner peripheral surface side end of the fixed part and is bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed part. A holding part for holding the bladder by pressing the peripheral surface toward the inner peripheral surface of the shell and retaining the inner peripheral surface of the peripheral edge of the bladder, and (c) being continuous with and held by the other end of the retaining part. Since it is equipped with a folded part that is folded back on the inner peripheral surface side of the part, (i) No action to eliminate the step of forming bent to the side, forming a a work capable of reducing thus (ii) simplifies the manufacturing process manufacturing time and manufacturing cost.

[0009]

【Example】

 Next, a holder for an accumulator according to the present invention will be specifically described with reference to the accompanying drawings with reference to 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 scope of the present invention.

(Description of the accompanying drawings)

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

FIG. 2 is a sectional view showing a usage state of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view showing a part of the manufacturing process of the embodiment shown in FIG. 1. In particular, the fixing portion 11 and the holding portion 12 are formed by processing a disc-shaped metal material. ₁ shows a disc-shaped workpiece M ₁ on which a holding element body 12 ^* for forming is manufactured.

FIG. 4 is a cross-sectional view showing a part of the manufacturing process of the embodiment shown in FIG. 1. In particular, the bladder is machined by processing the disc-shaped workpiece M ₁ shown in FIG. The hole m for expanding and contracting the central part 22 B of 22 shows the ring-shaped workpiece M ₂ made in the central part.

FIG. 5 is a cross-sectional view showing a part of the manufacturing process of the embodiment shown in FIG. 1, and in particular, the folded portion is formed by processing the ring-shaped workpiece M ₂ shown in FIG. 13 shows the produced holder element body M ₃ .

(Structure of Example)

First, referring to FIGS. 1 and 2, the structure of an embodiment of the accumulator holder according to the present invention will be described in detail.

Reference numeral 10 denotes an accumulator holder according to the present invention, in which an outer peripheral portion of an upper surface (that is, a side surface on the gas chamber 21A side) is locked to a locking step portion 21a formed on the inner peripheral surface of the shell 21. The fixing portion 11 for fixing the disposition position of the bladder 22 with respect to the inner peripheral surface of the shell 21 and the inner peripheral surface side end portion of the fixing portion 11 are connected to each other by the outer peripheral surface of the inner peripheral surface of the bladder 22. The peripheral portion of the bladder 22 is pressed while pressing the surface 22a toward the inner peripheral surface of the shell 21, and the retaining portion 12 for retaining the bladder 22 by locking the inner peripheral surface 22a is continuous with the other end portion of the retaining portion 12. And a folded-back portion 13 that is folded back to the inner peripheral surface side of the holding portion 12 to prevent damage to the bladder 22 when the bladder 22 expands and contracts.

The outer peripheral shape of the fixed portion 11 is an appropriate shape (for example, a circular shape) corresponding to the inner peripheral surface of the shell 21. The fixed part 11 is configured so that the bladder 22 can expand and contract according to the increase and decrease of the liquid pressure of the liquid supply source (not shown) communicating with the liquid chamber 21B due to the change of the liquid pressure of the liquid chamber 21B. It has a ring shape with a predetermined width corresponding to the width of the upper end surface 22b of the peripheral edge portion.

The holding portion 12 is bent toward the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed portion 11. The reason that the holding part 12 is bent toward the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed part 11 is that the upper part of the peripheral part is gradually thicker than the lower part of the peripheral part. By pressing and locking the inner peripheral surface 22a of the portion 22A toward the inner peripheral surface of the shell 21, the liquid pressure of the liquid supply source (not shown) communicating with the liquid chamber 21B is changed. This is to prevent the bladder 22 from falling off the inner peripheral surface of the shell 21 when the bladder 22 expands and contracts.

The angle θ between the holding portion 12 and the fixed portion 11 and the length of the holding portion 12 are the width of the lower surface side of the fixed portion 11 (that is, the liquid chamber 21B side) (hereinafter referred to as “fixed portion length a”). And the filling rate of the peripheral edge portion 22A of the bladder 22 and the tensile stress when the bladder 22 expands and contracts. By the way, the filling rate of the peripheral portion 22A of the bladder 22 is the ratio of the distance b between the lower end of the outer peripheral surface of the holding portion 12 and the lower surface of the fixed portion 11 (that is, the side surface on the liquid chamber 21B side) to the fixed portion length a. Determined by The force that opposes the tensile stress when the bladder 22 expands and contracts is determined by the ratio of the distance c between the lower end of the holding portion 12 on the outer peripheral surface side and the outer peripheral surface of the fixed portion 11 to the fixed portion length a.

The accumulator holder 10 according to the present invention is preferably made of metal such as iron or steel.

Reference numeral 20 denotes an accumulator, which is divided into a gas chamber 21A and a liquid chamber 21B by a bladder 22 arranged inside the shell 21 by the accumulator holder 10 according to the present invention. There is. That is, the accumulator holder 10 according to the present invention is arranged so that the outer peripheral portion of the fixed portion 11 on the upper surface side (that is, the gas chamber 21A side) is brought into contact with the locking step portion 21a of the shell 21. The outer peripheral surface of the holding portion 12 holds the bladder 22 by pressing the peripheral inner peripheral surface 22a of the bladder 22 toward the inner peripheral surface of the shell 21 while holding the bladder 22 against the inner peripheral surface of the shell 21. Are arranged.

The gas chamber 21A of the shell 21 is filled with an appropriate gas (for example, nitrogen gas) from the gas supply port 23a, and then the gas supply port 23a is closed by the closing member 23 and the sealing member 23b. It is enclosed by.

A liquid inlet / outlet member (so-called “oil port”) 24 having a liquid guide hole 24a whose inner opening can be closed by a poppet 22c is disposed in the liquid chamber 21B of the shell 21. Therefore, the liquid chamber 21B communicates with an appropriate liquid supply source (not shown) through the liquid guide hole 24a, and an appropriate amount of liquid (for example, oil, oil, etc.) according to the liquid pressure of the liquid supply source. Brake oil or water) is supplied.

(Operation of Example)

Further, with reference to FIGS. 1 and 2, the operation of one embodiment of the accumulator holder according to the present invention will be described in detail.

The accumulator holder 10 according to the present invention fixes the position of the bladder by (a) locking the outer periphery of the upper surface with the locking step formed on the inner surface of the shell. (B) is connected to the end of the fixed part on the inner peripheral surface side and is bent toward the outer peripheral surface at an angle smaller than 90 degrees with respect to the fixed part. A holding part for holding the bladder by locking the inner peripheral surface of the peripheral part of the bladder while pressing the surface toward the inner peripheral surface of the shell, and Since it has a folded-back portion that is folded back to the inner peripheral surface side, (i) it is possible to eliminate the manufacturing process in which the folded-back portion is bent to the outer peripheral surface side of the holding portion, and (ii) the manufacturing process. Can be simplified, and manufacturing time and manufacturing cost can be reduced.

In the accumulator holder 10 according to the present invention, (a) the bladder disposition position is fixed by engaging the outer peripheral portion of the upper surface with the retaining step portion formed on the inner peripheral surface of the shell. (B) It is connected to the inner peripheral surface side end of the fixed part and is bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed part. A holding portion for holding the bladder by holding the inner peripheral surface of the peripheral portion of the bladder while pressing the peripheral surface toward the inner peripheral surface of the shell, and (c) a holding portion continuous to the other end of the holding portion. Since the bladder 22 is provided with a folded-back portion that is folded back to the inner peripheral surface side of the bladder 22, the bladder 22B is increased or decreased in accordance with the increase or decrease in the liquid pressure of the liquid chamber 21B accompanying the change in the liquid pressure of the liquid supply source (not shown). (I) It is possible to prevent the bladder 22 from falling off from the inner peripheral surface of the shell 21, even if the central portion 22B of the The bladder 22 can be prevented from being damaged.

(Manufacturing Procedure)

In addition, with reference to FIGS. 1 to 5, a manufacturing procedure of an embodiment of the accumulator holder according to the present invention will be described.

The disc-shaped metal material produced by an appropriate method has a central portion that is press-worked to form a recess, thereby forming a holding portion element body 12 for forming the fixing portion 11 and the holding portion 12. ^* And are disc-shaped workpieces M ₁ produced.

The disk-shaped workpiece M ₁ is formed into a ring shape in which the central portion of the bladder 22 is expanded and contracted by pressing (that is, punching) the central portion of the circular workpiece m 1. It is referred to as the workpiece M ₂ .

The ring-shaped workpieces M ₂ is the inner peripheral surface end portion of the holding portion body 12 ^* is pressing, by being folded back to the inner peripheral surface of the holding Bumototai 12 ^*, turned-back portion 13 is produced The holder body M ₃ is formed.

In the holder body M ₃ , the holding body 12 ^* is pressed and bent to the outer peripheral surface side, whereby the holding portion 12 is manufactured, and the accumulator holder 10 according to the present invention is obtained.

[0038]

[Effect of device]

 As is clear from the above, in the accumulator holder according to the present invention, the bladder for partitioning the internal space of the shell into the gas chamber and the liquid chamber is provided in the shell, as clearly shown in the [Solution to Problem] column. An accumulator holder arranged on the inner peripheral surface, and in particular, (a) the bladder installation position by the outer peripheral surface of the upper surface being locked by the locking step formed on the inner peripheral surface of the shell. (B) It is continuous with the end part on the inner peripheral surface side of the fixing part and is bent to the outer peripheral surface side at an angle smaller than 90 degrees with respect to the fixed part. A holding part for holding the bladder by locking the inner peripheral surface of the bladder while pressing the inner peripheral surface of the peripheral part of the bladder toward the inner peripheral surface of the shell, and (c) is connected to the other end of the holding part. In addition, since it is provided with a folded part that is folded back on the inner peripheral surface side of the holding part, (i) This has the effect of eliminating the step of bending the return portion toward the outer peripheral surface of the holding portion, and (ii) simplifies the manufacturing process and reduces the manufacturing time and manufacturing cost.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing a usage state of the embodiment shown in FIG.

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

FIG. 4 is a cross-sectional view showing the manufacturing process of the embodiment shown in FIG.

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

[Explanation of Codes] 10・ ・ ・ ・ ・ ・ ・ ・ Accumulator holder 11 ・ ・ ・ ・ ・・ ・ Fixed part 12 ・ ・ ・ ・ ・ ・ ・ Holding part 12 ^*・ ・ ・ ・ ・ ・... holding portion body 13 ······················ fold 20 · · · · · · · ·・ ・ ・ ・ ・ ・ ・ ・ ・ Accumulator 21 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Shell 21A ・ ・ ・ ・ ・ ・・ Gas chamber 21B ・ ・ ・ ・ Liquid chamber 21a ・ ・ ・ ・ Locking step 22 ・ ・・ ・ ・ ・ ・ ・ ・ Bladder 22A ・ ・ ・ ・...・ ・ ・ Center part 22a ・ ・ ・ ・ Peripheral part inner peripheral surface 22b ・ ・ ・ ・ ・ ・..Upper end surface 22c of the peripheral portion ..... Poppet 23 .. Member 23a ... Gas supply port 23b ... Seal member 24 ...・ ・ ・ ・ ・ ・ Liquid inlet / outlet member 24a ・ ・ ・ ・ ・ ・ ・ Liquid guide hole M ₁・ ・・ ・ ・ Disc-shaped workpiece M ₂・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Ring-shaped workpiece M ₃・ ・ ・ ・ ・ ・ ・ Holder body m ・ ・ ・ ・ ・ ・ ・ ・ ・·hole Department

Claims (1)

[Scope of utility model registration request] 1. A holder for an accumulator in which a bladder for partitioning an inner space of a shell into a gas chamber and a liquid chamber is arranged on an inner peripheral surface of the shell, wherein (a) is formed on the inner peripheral surface of the shell. The fixing part (11) for fixing the bladder installation position by locking the outer peripheral part of the upper surface to the locking step part, and (b) the inner peripheral surface side end part of the fixing part (11). Fixed part (1
The outer peripheral surface is bent at an angle smaller than 90 degrees with respect to 1), and the outer peripheral surface presses the inner peripheral surface of the peripheral portion of the bladder toward the inner peripheral surface of the shell while locking the inner peripheral surface of the peripheral portion of the bladder. And a holding part (12) for holding the bladder, and (c) a folding part (13) continuous with the other end of the holding part (12) and folded back to the inner peripheral surface side of the holding part (12). An accumulator holder comprising: