Fastener for seal assembly, seal assembly equipped with same, and method for assembling seal assembly

Abstract

To easily and surely assemble a seal assembly, and to stably hold an integrated state even at transport.SOLUTION: A seal assembly fastener 4 for stabilizing a seal assembly 1 by being attached to the seal assembly 1 which is brought into in a state that an annular elastic member 2 and an annular stiff member 3 for covering the annular elastic member 2 from at least one side of an internal peripheral side and an external peripheral side are coupled to each other comprises: a fastener main body 4a which abuts on at least a pair of side faces of the seal assembly 1; and retention parts 4b constituted of a pair of end parts of one released side face of the fastener main body 4a. The seal assembly 4 allows the passage of the seal assembly 1 in a state that a pair of the retention parts 4b are opened, and grips the annular elastic member 2 and the annular stiff member 3 of the seal assembly 1 so as not to come off in a closed state.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a seal assembly fastener that stably holds a seal assembly in which an annular elastic member is fitted into an annular rigid member, a seal assembly including the same, and a method for assembling the seal assembly. [Background technology]

[0002] Conventionally, a sealing member has been known which includes an annular elastic member and an annular sealing member having a U-shaped cross section which is attached to the annular elastic member so as to house one of the inner and outer edge portions of the annular elastic member inside over the entire circumference and expose the other portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-185638 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, with conventional sealing members, when fitting an annular elastic member into a highly rigid annular sealing member, it is difficult and time-consuming to fit the inflated annular elastic member into the annular sealing member, especially in the final stage, and there is a problem that the integrated sealing member is easily detached during transportation, etc.

[0005] The present invention has been made in consideration of the above points, and its object is to enable a seal assembly to be assembled simply and reliably, and to enable the integrated state to be stably maintained even during transportation. [Means for solving the problem]

[0006] To achieve the above object, the present invention uses a special seal assembly fastener.

[0007] Specifically, in the first invention, The present invention is directed to a fastener for a seal assembly, which is attached to a seal assembly in a state in which an annular elastic member and an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side are joined together, to stabilize the seal assembly, a stopper body that abuts against at least a pair of side surfaces of the seal assembly; and a retaining portion formed by a pair of ends on one open side surface of the fastener body, The pair of anti-slip portions are configured to pass the seal assembly through them when open, and to grip the annular elastic member and the annular rigid member of the seal assembly when closed to prevent them from coming off.

[0008] According to the above configuration, the seal assembly in which at least a part of the circumference of the annular elastic member and the annular rigid member are joined is passed through the pair of retaining portions of the seal assembly fastener in an open state, and then the pair of retaining portions is closed to pinch the annular elastic member and the annular rigid member of the seal assembly with the fastener body so as to hold them in place. Then, after fitting the plurality of seal assembly fasteners, the remaining part of the circumference of the annular elastic member and the annular rigid member can be joined by moving them in the circumferential direction. Therefore, the seal assembly can be easily and reliably assembled with the seal assembly fastener of a simple configuration. In addition, since the seal assembly fastener can maintain the joined state of the annular elastic member and the annular rigid member, the integrated state is stable even during transportation. Note that "covering the annular elastic member from at least one of the inner and outer circumferential sides" means that the annular rigid member may cover only the inner circumferential side, only the outer circumferential side, or both the inner and outer circumferential sides of the annular member. For example, when covering both the inner peripheral side and the outer peripheral side, a pair of retaining portions, one of which is open, is disposed on the flat surface side or the bottom surface side of the seal assembly.

[0009] In the second invention, in the first invention, The seal assembly fastener is made of a single piece of resin molded product.

[0010] According to the above-mentioned configuration, if the resin molded product is used, it can be easily molded into a desired shape, and since it has a suitable degree of softness, the seal assembly side is unlikely to be scratched by the seal assembly fastener.

[0011] The seal assembly of the third invention comprises: An annular elastic member; an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side; The annular elastic member is provided with a fastener for a seal assembly having a fastener body that abuts against at least a pair of side surfaces of the seal assembly fitted into the annular rigid member, and a plurality of anti-slip portions formed by a pair of ends of one open side surface of the fastener body.

[0012] According to the above configuration, the joined state of the annular elastic member and the annular rigid member can be easily maintained by sandwiching the joined annular elastic member and the annular rigid member with the seal assembly fastener having a simple configuration. Therefore, the seal assembly can be easily installed and easily transported after installation. When installing the seal assembly in a device, the seal assembly fastener can be removed and then installed in the device.

[0013] In a method for assembling a seal assembly according to a fourth aspect of the present invention, An annular elastic member; an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side; a fastener for a seal assembly, the fastener body being adapted to abut against at least a pair of side surfaces of the seal assembly in which the annular elastic member is fitted into the annular rigid member, and the fastener body being provided with a pair of end portions of an open side surface of the fastener body to prevent slipping out of the seal assembly; the annular elastic member is fitted into at least a portion of the entire circumference of the annular rigid member from at least one of an outer circumferential side and an inner circumferential side of the annular rigid member; In the region where the annular elastic member is fitted, the pair of retaining portions of the plurality of seal assembly fasteners are opened to allow the seal assembly to pass through; A pair of retaining portions of the plurality of seal assembly fasteners are closed to grip the annular elastic member and the annular rigid member of the seal assembly so as to prevent them from coming apart.

[0014] According to the above configuration, a pair of anti-slip portions is opened and a seal assembly fastener is fitted into the portion where a portion of the entire circumference of the annular elastic member and the annular rigid member are previously joined, and then the multiple seal assembly fasteners are attached by closing the pair of anti-slip portions, thereby maintaining the joined state of the annular elastic member and the annular rigid member, thereby improving stability during transportation.

[0015] In the fifth aspect of the present invention, in the fourth aspect of the present invention, a plurality of the seal assembly fasteners are closed to hold the annular elastic member and the annular rigid member of the seal assembly in such a manner that they do not come apart, and then The seal assembly fasteners are shifted in the circumferential direction and moved to appropriate positions.

[0016] According to the above configuration, by closing a pair of anti-slip portions to attach multiple fasteners for the seal assembly, and then moving the fasteners for the seal assembly to appropriate positions in the circumferential direction, the annular elastic member can be attached much more easily and reliably than by manually fitting the entire circumference in order. Effect of the Invention

[0017] As described above, according to the present invention, the seal assembly fastener is used to pass the seal assembly through a pair of anti-slip portions when the portions are open, and when closed, the annular elastic member and the annular rigid member of the seal assembly are gripped to prevent them from coming off. This allows the seal assembly to be assembled easily and reliably, and the integrated state can be stably maintained even during transportation. [Brief description of the drawings]

[0018] [Figure 1] 13 is a front view showing the seal assembly being held by a seal assembly fastener. FIG. [Diagram 2] 2A is an enlarged cross-sectional view taken along line IIa-IIa in FIG. 1, FIG. 2B is a plan view of the fastener for the seal assembly, and FIG. 2C is a side view of the fastener for the seal assembly. [Diagram 3] 1A is a front view showing how an annular elastic member is fitted into an annular rigid member, and FIG. 1B is a front view showing a state in which a seal assembly fastener is fitted into the portion where the annular elastic member is fitted into the annular rigid member. [Figure 4] 1A is a front view showing how the fastener for the seal assembly in an engaged state is slid circumferentially, and FIG. 1B is a front view showing how the annular elastic member is sequentially engaged with the annular rigid member while the fastener for the seal assembly is slid circumferentially. [Diagram 5] 2(a) and 2(b) show modified examples 1, 2, and 3, respectively. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0020] FIG. 1 shows a seal assembly 1 according to an embodiment of the present invention, which comprises an annular elastic member 2, an annular rigid member 3 covering the annular elastic member 2 from at least one of the inner and outer circumferential sides, and a plurality of (four in this embodiment) seal assembly fasteners 4.

[0021] 2(a)-(c), the annular elastic member 2 has a cross section in which the inner circumferential side 2a is arc-shaped, the outer circumferential side 2b includes smaller arc-shaped ridges, and the upper and lower surfaces 2c include ridges, but the cross-sectional shape is not particularly limited. The annular elastic member 2 is made of silicone rubber, nitrile rubber, chloroprene rubber, fluorine-based rubber, or the like, which can be appropriately deformed to easily exert a sealing effect.

[0022] The annular rigid member 3 is made of a material having higher rigidity than the annular elastic member 2, for example, a resin molded product, and has a U-shaped cross section into which the protrusions on the outer circumferential side 2b of the annular elastic member 2 fit, as shown in Figure 2, but is not limited to this shape, and in short, it should be in accordance with the design requirements of the equipment in which the seal assembly 1 is to be installed.

[0023] The seal assembly stopper 4 is attached to the seal assembly 1 in a state in which the annular elastic member 2 and the annular rigid member 3 are joined, to stabilize the seal assembly 1. Specifically, it is configured so that the seal assembly 1 is passed through the pair of retaining portions 4b in an open state, and the annular elastic member 2 and the annular rigid member 3 of the seal assembly 1 are gripped in a closed state to prevent them from coming off.

[0024] The seal assembly fastener 4 has a fastener body 4a that abuts against at least a pair of side surfaces of the seal assembly 1 in which the annular elastic member 2 is fitted into the annular rigid member 3. A pair of ends of one open side surface of this fastener body 4a constitutes a retaining portion 4b.

[0025] The inclination angle θ of the pair of retaining portions 4b is, for example, from 10° to 50°, and more preferably from 25° to 35°. For example, the inclination angle can be set to 50° so that the retaining portions 4b come into contact with one of the protrusions on the upper and lower surfaces 2c of the annular elastic member 2.

[0026] The seal assembly fastener 4 is made of, for example, a one-piece resin molded product of PTFE (polytetrafluoroethylene), which has extremely excellent chemical resistance, heat resistance, and electrical properties, but the material is not limited to this and may be, for example, MC nylon, ultra-high molecular weight polyethylene (UHMWPE), polypropylene (PP), or polyacetal (POM).

[0027] By making the seal assembly fastener 4 a resin molded product, it can be easily molded into a desired shape, and there is an advantage that it does not damage the seal assembly 1 as compared to metal that is too hard.

[0028] On the other hand, the seal assembly stopper 4 may be made of, for example, aluminum, which is a light metal.

[0029] As shown in FIG. 2, the width W of the seal assembly fastener 4 is W=WB+2T1+α Here, WB is the width of the seal assembly 1, T1 is the thickness of the seal assembly fastener 4, and α is the clearance between the seal assembly 1 and the seal assembly fastener 4, and α is, for example, α=0.2±0.1. T1 is, for example, 0.15±0.1 mm, and the depth T2 of the seal assembly fastener 4 is 20±10 mm.

[0030] The height of the straight portion of the seal assembly fastener 4 is, for example, β times the height WA of the seal assembly 1. For example, it is 2.85 mm×β. Here, β=0.7±0.1 mm.

[0031] -How to install the seal assembly- Next, a method for assembling the seal assembly 1 according to this embodiment will be described.

[0032] First, prepare the above-mentioned annular elastic member 2, the annular rigid member 3, and a plurality of seal assembly fasteners 4. In this embodiment, for example, four seal assembly fasteners 4 are prepared for one seal assembly 1.

[0033] Next, the annular elastic member 2 is fitted into at least a partial area of ​​the entire circumference from at least one of the outer circumferential side and the inner circumferential side of the annular rigid member 3. Specifically, in this embodiment, in the area where the annular elastic member 2 is fitted, a pair of retaining portions 4b of the plurality of seal assembly fasteners 4 are opened and passed from above the seal assembly 1 as shown in Fig. 2(a), and the pair of retaining portions 4b of, for example, four seal assembly fasteners are closed to hold the annular elastic member 2 and the annular rigid member 3 of the seal assembly so as not to come off. First, in this area, the seal assembly fasteners 4 can pinch the annular elastic member 2 and the annular rigid member 3 of the seal assembly and hold them so as not to come off.

[0034] After the pair of retaining portions 4b of the multiple seal assembly fasteners 4 are closed to grip the annular elastic member 2 and the annular rigid member 3 of the seal assembly so as not to come off, the multiple seal assembly fasteners 4 are shifted circumferentially to an appropriate position. This allows the remaining portion of the entire circumference of the annular elastic member 2 to be joined to the annular rigid member 3. In this way, installation of the annular elastic member 2 is much easier than fitting the entire circumference in place by hand.

[0035] Therefore, the seal assembly 1 can be easily and reliably assembled using the seal assembly fastener 4 having a simple configuration.

[0036] Furthermore, since the annular elastic member 2 and the annular rigid member 3 can be maintained in a joined state by the seal assembly fastener 4, the integrated state is stable even during transportation.

[0037] In this embodiment, the fastener body 4a of the fastener 4 for a seal assembly, which has a simple structure, sandwiches the joined annular elastic member 2 and annular rigid member 3, so that the joined state can be easily maintained. Therefore, the fastener 4 can be easily attached, and after attachment, it is easy to transport.

[0038] When the seal assembly 1 is to be installed in a device to be sealed, the seal assembly fastener 4 can be removed before installation.

[0039] Therefore, according to the seal assembly fastener 4 of this embodiment, the seal assembly 1 can be easily and reliably assembled, and the integrated state can be stably maintained even during transportation.

[0040] -Variation 1- 5(a) shows a first modified example of the embodiment of the present invention, which differs from the above-described embodiment in that the shape of the pair of retaining portions 104b is different. In the following modified examples, the same parts as those in FIGS. 1 to 4 are denoted by the same reference numerals and detailed description thereof will be omitted.

[0041] In this modification, a pair of retaining portions 104b are formed by ends that extend straight from a fastener main body 104a.

[0042] In this case, the retaining effect of the pair of retaining portions 104b themselves is small, but attachment is easy. Instead, the retainer body 104a may have a dimensional relationship such that the annular elastic member 2 and the annular rigid member 3 can be firmly held by the retainer body 104a.

[0043] -Variation 2- FIG. 5(b) shows a second modification of the embodiment of the present invention, which differs from the above embodiment in that the shape of the pair of retaining portions 204b is different.

[0044] In this modified example, the pair of anti-slip portions 204b are bent toward each other from the fastener body 204a, and then the tips are further bent toward each other at an angle of 20°±1°, thereby providing an even greater anti-slip effect.

[0045] In this case, it is advisable to ensure that the pair of retaining portions 204b have flexibility so that they can be easily opened and closed, for ease of mounting.

[0046] -Variation 3- FIG. 5(c) shows a third modification of the embodiment of the present invention, which differs from the above embodiment in that the shape of the pair of retaining portions 304b is different.

[0047] In this modification, the pair of retaining portions 304b are bent so as to approach each other from the straight fastener main body 304a, and then the tips are further bent so as to approach each other, thereby ensuring a retaining effect.

[0048] In this case, it is advisable to ensure flexibility so that the pair of retaining portions 304b can be easily opened and closed to facilitate attachment.

[0049] (Other embodiments) The present invention may be configured as follows with respect to the above embodiment.

[0050] That is, in the above embodiment, the seal assembly stopper 4 covers the inner circumferential side, outer circumferential side and upper surface of the seal assembly 1, but does not cover part of the lower surface; however, for example, it may cover the outer circumferential side, upper surface and lower surface, or the inner circumferential side, upper surface and lower surface.

[0051] In addition, the seal assembly 1 covers the outer circumferential side of the annular elastic member 2 with the annular rigid member 3, but it may also cover the inner circumferential side, and in some cases, for example, it may be configured to cover the outer circumferential side, inner circumferential side and underside of the annular elastic member 2.

[0052] It should be noted that the above-described embodiments are essentially preferred examples, and are not intended to limit the scope of the present invention, its applications, or uses. [Explanation of symbols]

[0053] 1 Seal Assembly 2. Annular elastic member 2a Inner side 2b Outer circumference 2c Upper and lower surfaces 3. Ring-shaped rigid member 4 Seal assembly fastener 4a, 104a, 204a, 304a Fastener body 4b, 104b, 204b, 304b Stopper

Claims

1. A fastener for a seal assembly is attached to a seal assembly in a state in which an annular elastic member and an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side are joined together, to stabilize the seal assembly, a stopper body that abuts against at least a pair of side surfaces of a portion of the entire circumference of the seal assembly; and a retaining portion formed by a pair of ends on one open side surface of the fastener body, The seal assembly is passed through the pair of retaining portions when the retaining portions are open, and when the retaining portions are closed, the seal assembly can be moved in the circumferential direction while being gripped so that the annular elastic member and the annular rigid member of the seal assembly do not come off. A fastener for a seal assembly, characterized in that

2. Consists of a single resin molded part 2. The fastener for a seal assembly according to claim 1, wherein the fastener is a

3. An annular elastic member; an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side; a stopper for a seal assembly, the stopper having a plurality of retaining portions, the stopper body being configured to abut against at least a pair of side surfaces of the seal assembly in which the annular elastic member is fitted into the annular rigid member, and a pair of end portions of one open side surface of the stopper body; A seal assembly comprising:

4. An annular elastic member; an annular rigid member covering the annular elastic member from at least one of an inner peripheral side and an outer peripheral side; a fastener for a seal assembly including a fastener body that abuts against at least a pair of side surfaces of the seal assembly in which the annular elastic member is fitted into the annular rigid member, and a retaining portion that is formed by a pair of end portions of one open side surface of the fastener body; the annular elastic member is fitted into at least a portion of the entire circumference of the annular rigid member from at least one of an outer circumferential side and an inner circumferential side of the annular rigid member; In the region where the annular elastic member is fitted, the pair of retaining portions of the plurality of seal assembly fasteners are opened to allow the seal assembly to pass through; The pair of retaining portions of the plurality of seal assembly fasteners are closed to hold the annular elastic member and the annular rigid member of the seal assembly so as not to come off. A method for assembling a seal assembly comprising the steps of:

5. a plurality of the seal assembly fasteners are closed to hold the annular elastic member and the annular rigid member of the seal assembly in such a manner that they do not come apart, and then The multiple seal assembly fasteners are shifted in the circumferential direction to move them to the appropriate position.

5. The method for assembling a seal assembly according to claim 4,

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