JP5844593B2 - Fitting protective cap - Google Patents

Description

  The present invention relates to a protective cap for joints (hereinafter, also simply referred to as “cap”), and more particularly, to a protective cap for joints that can achieve both high functionality and detachability.

  When transporting a hose with a joint or metal fitting attached to the end, a cap is put on to protect the joint or metal fitting and prevent foreign matter from entering the inner periphery of the joint or the inside of the hose. As a technique regarding such a protective cap for joints, for example, Patent Document 1 can be cited. The joint member protective cap proposed in Patent Document 1 is used for various tubular joint members used in a semiconductor manufacturing apparatus, and a tubular joint in which a male screw is formed on the outer periphery near the butt end surface of the joint member. It is a joint member protective cap suitable for the member.

  Specifically, it is a bottomed cylindrical synthetic resin or rubber cap that protects the butted end face and the male screw, and a fitting portion is formed on the bottom wall to be fitted to the outer circumference of the butted end of the joint member. The inner diameter of the peripheral wall is larger than the outer diameter of the male screw of the joint member. According to this joint member protective cap, when the joint member protective cap is attached and detached, the joint member protective cap and the male screw are not rubbed together, and the contamination source of the clean room, which is the manufacturing site of the semiconductor manufacturing apparatus, is prevented. Occurrence can be prevented.

Japanese Patent No. 3421187

  Conventionally, the joint protection cap used when transporting a hose with a joint or metal fitting attached to the end is a type that covers the joint (from the butt end face side of the joint). There was a problem that it was difficult to attach and detach the cap. That is, when a joint protective cap is mounted from above on a joint with a T-shaped cross-section so as to protect the butted portion on the top surface and prevent foreign matter from entering the hose, the cap is removed from the joint. In order to prevent falling off, it is necessary to provide a protrusion on the inner peripheral surface of the peripheral wall of the protective cap for joints. Therefore, if the protective function of the joint protection cap is prioritized and a hard material is selected as the material, there is a problem that it becomes difficult for the operator to attach and detach the joint protection cap. It is difficult to achieve both high performance and detachability.

  Then, the objective of this invention is providing the protective cap for joints which can eliminate the said subject and can make functionality and workability highly compatible.

  As a result of intensive studies to solve the above-mentioned problems, the present inventor did not cover the joint protective cap from the top of the joint as in the prior art. The present invention has been completed by finding that attachment / detachment is easy and workability is improved without impairing performance.

That is, the protective cap for joints of the present invention is a protective cap for joints made of an elastic body having a ceiling wall that protects the butted end surface and the inner peripheral surface of the joint, and a side wall that protects the side surfaces of the joint.
A release portion is provided in a part of the side wall, and a bottom wall is formed from the side wall toward the inside of the protective cap for the joint, and the bottom wall is a fitting portion into which the neck portion of the joint is fitted. And a holding part for holding the neck part.

  In the protective cap for joints of this invention, it is preferable that the said elastic body is transparent or translucent. In the joint protective cap of the present invention, the elastic body is preferably polyethylene.

  ADVANTAGE OF THE INVENTION According to this invention, the protective cap for joints which can make functionality and workability highly compatible can be provided.

It is a perspective view of the protective cap for joints of one suitable embodiment of this invention. It is a front view of the protective cap for joints of one suitable embodiment of this invention. It is a top view of the protective cap for joints of one suitable embodiment of this invention. It is a bottom view of the protective cap for joints of one suitable embodiment of this invention. It is a rear view of the protective cap for joints of one suitable embodiment of this invention. It is a right view of the protective cap for joints of one suitable embodiment of this invention. It is a left view of the protective cap for joints of one suitable embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the use condition of the protective cap for joints of one preferable embodiment of this invention, (a) is a perspective view of the state before putting a protective cap for joints on a joint, (b) is a joint. It is a perspective view in the state where the protective cap for joints was put on. It is the perspective view seen from the back which shows the use state of the protection cap for joints of one suitable embodiment of the present invention, (a) is the back perspective view of the state before putting the protection cap for joints on a joint, (B) is a rear perspective view of the joint with the joint protective cap put on. It is a perspective view of the protective cap for joints of other suitable embodiment of this invention. It is a front view of the protective cap for joints of other suitable embodiment of this invention. It is a top view of the protective cap for joints of other suitable embodiment of this invention. It is a bottom view of the protective cap for joints of other suitable embodiment of this invention. It is a rear view of the protective cap for joints of other suitable embodiment of this invention. It is a right view of the protective cap for joints of other suitable embodiment of this invention. It is a left view of the protective cap for joints of other suitable embodiment of this invention. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is explanatory drawing which shows the use condition of the protective cap for couplings of other suitable embodiment of this invention. It is a perspective view which shows the use condition of the protective cap for joints of other suitable embodiment of this invention, (a) is a perspective view of the state before putting a protective cap for joints on a joint, (b) It is a perspective view of the state where the joint protective cap was put on the joint. It is the perspective view seen from the back which shows the use condition of the protection cap for joints of other suitable embodiments of the present invention, and (a) is the back perspective view of the state before putting the protection cap for joints on the joint. , (B) is a rear perspective view of the joint with the joint protective cap put on. It is a perspective view of the protective cap for joints of other suitable embodiment of this invention. It is a front view of the protective cap for joints of other suitable embodiment of this invention. It is a top view of the protective cap for joints of other suitable embodiment of this invention. It is a bottom view of the protective cap for joints of other suitable embodiment of this invention. It is a rear view of the protective cap for joints of other suitable embodiment of this invention. It is a right view of the protective cap for joints of other suitable embodiment of this invention. It is a left view of the protective cap for joints of other suitable embodiment of this invention. It is EE sectional drawing of FIG. It is FF sectional drawing of FIG. It is explanatory drawing which shows the use condition of the protective cap for couplings of other suitable embodiment of this invention. It is a perspective view which shows the use condition of the protective cap for joints of other suitable embodiment of this invention, (a) is a perspective view of the state before putting a protective cap for joints on a joint, (b) It is a perspective view of the state where the joint protective cap was put on the joint. It is the perspective view seen from the back which shows the use condition of the protection cap for joints of other suitable embodiments of the present invention, and (a) is the back perspective view of the state before putting the protection cap for joints on the joint. , (B) is a rear perspective view of the joint with the joint protective cap put on. It is a perspective view of the protective cap for joints of other suitable embodiment of this invention. It is a front view of the protective cap for joints of other suitable embodiment of this invention. It is a top view of the protective cap for joints of other suitable embodiment of this invention. It is a bottom view of the protective cap for joints of other suitable embodiment of this invention. It is a rear view of the protective cap for joints of other suitable embodiment of this invention. It is a right view of the protective cap for joints of other suitable embodiment of this invention. It is a left view of the protective cap for joints of other suitable embodiment of this invention. It is GG sectional drawing of FIG. It is explanatory drawing which shows the use condition of the protective cap for couplings of other suitable embodiment of this invention. It is a perspective view which shows the use condition of the protective cap for joints of other suitable embodiment of this invention, (a) is a perspective view of the state before putting a protective cap for joints on a joint, (b) It is a perspective view of the state where the joint protective cap was put on the joint. It is the perspective view seen from the back which shows the use condition of the protection cap for joints of other suitable embodiments of the present invention, and (a) is the back perspective view of the state before putting the protection cap for joints on the joint. , (B) is a rear perspective view of the joint with the joint protective cap put on. (A) is the perspective view seen from the front of the protective cap for joints of other suitable embodiments of the present invention, and (b) is the back of the protective cap for joints of other preferred embodiments of the present invention. It is the perspective view seen from. It is a front view of the protective cap for joints of other suitable embodiment of this invention. It is a top view of the protective cap for joints of other suitable embodiment of this invention. It is a bottom view of the protective cap for joints of other suitable embodiment of this invention. It is a rear view of the protective cap for joints of other suitable embodiment of this invention. It is a right view of the protective cap for joints of other suitable embodiment of this invention. It is a left view of the protective cap for joints of other suitable embodiment of this invention. It is HH sectional drawing of FIG. It is a perspective view which shows the use condition of the protective cap for joints of other suitable embodiment of this invention, (a) is a perspective view of the state before putting a protective cap for joints on a joint, (b) It is a perspective view of the state where the joint protective cap was put on the joint. It is the perspective view seen from the back which shows the use condition of the protection cap for joints of other suitable embodiments of the present invention, and (a) is the back perspective view of the state before putting the protection cap for joints on the joint. , (B) is a rear perspective view of the joint with the joint protective cap put on.

Hereinafter, the protective cap for joints of this invention is demonstrated in detail using drawing.
1 to 9 are a perspective view (FIG. 1), a front view (FIG. 2), a plan view (FIG. 3), a bottom view (FIG. 4), and a joint protective cap according to a preferred embodiment of the present invention, respectively. FIG. 8 is a rear view (FIG. 5), a right side view (FIG. 6), and a left side view (FIG. 7). FIG. 8 is a cross-sectional view taken along line AA in FIG. is there. The protective cap 10 for joints of this invention consists of an elastic body, and has the ceiling wall 1 which protects the butting end surface and inner peripheral surface of a joint, and the side wall 2 which protects the side surface of a joint. In the illustrated example, the ceiling wall 1 has a substantially rectangular shape, but is not limited to this, and may have other shapes. In the illustrated example, the ceiling wall 1 has the bottom wall 3, but in the present invention, The bottom wall 3 is not essential and may be provided as needed.

  In the present invention, it is important that the release portion 4 is provided in a part of the side wall 2. FIG. 10 and FIG. 11 are a perspective view and a rear perspective view, respectively, showing a use state of the joint protective cap 10 according to one preferred embodiment of the present invention. FIG. 10 (a) shows the joint protective cap 10 on the joint 100. FIG. The state before covering, (b) shows the joint 100 covered with the joint protective cap 10. In the illustrated example, a hose 101 is connected to the joint 100. As shown in the drawing, by fitting the joint 100 into the joint protective cap 10 from the release portion 4 provided on a part of the side wall 2, the ceiling wall 1 can prevent the joint from being protected and foreign matter from entering the hose. Moreover, the side wall 2 sandwiches the joint 100 to prevent the dropout. Moreover, since the joint protective cap can be covered from the side with respect to the axial direction of the joint 100, it is excellent in detachability.

  In the joint protecting cap of the present invention, the force for sandwiching the joint 100 can be controlled by appropriately setting the distance L1 between the opposing side walls 2 (see FIG. 9). That is, it is possible to adjust the balance between the ease of attaching and detaching the joint protective cap 10 at the work site and the difficulty of removing the cap during transportation. In order to adjust these balances, for example, the distance L1 between the opposing side walls 2 may be set equal to the width of the joint 100 to about 20% smaller than the width of the joint 100.

  In the protective cap for joints of this invention, it is preferable that the bottom wall 3 is formed toward the inner side of the protective cap 10 for joints from the side wall 2 so that it may show in figure. By providing the bottom wall 3 on the joint protection cap 10, it is possible to satisfactorily prevent the joint protection cap 10 from falling off the joint 100. That is, as shown in FIG. 10, by providing the bottom wall 3, the bottom wall 3 is caught on the lower surface of the joint 100 (the surface opposite the butt end), and the joint protective cap 10 falls off the joint 100. Can be prevented. If the bottom wall 3 is provided so that the distance L2 (see FIG. 8) between the ceiling wall 1 and the bottom wall 3 is smaller than the thickness of the joint 100, the ceiling wall 1 and the bottom wall 3 sandwich the joint 100. In other words, the joint protective cap 10 can be prevented from falling off. In this case, L1 (see FIG. 9) may be made larger than the width of the joint, and the ceiling wall 1 and the bottom wall 3 may all be provided with the function of preventing the joint protection cap 10 from falling off.

  As shown in the figure, in the joint protective cap 10 of the present invention, the bottom wall 3 has a fitting portion 3A having a diameter smaller than that of the neck portion 102 of the joint 100 and a diameter that is approximately the same as that of the neck portion 102 of the joint 100. Part 3B. By fitting the neck portion 102 of the joint 100 into the holding portion 3B via the fitting portion 3A, the joint protective cap 10 can be further prevented from falling off. In this case, since the cap-inserting portion 3A, the holding portion 3B, and the neck portion 102 of the joint bear the function of preventing the drop of the joint protective cap 10, L1 (see FIG. 9) is larger than the width of the joint. Alternatively, L2 (see FIG. 8) may be larger than the thickness of the joint.

  12 to 18 are a perspective view (FIG. 12), a front view (FIG. 13), a plan view (FIG. 14), and a bottom view (FIG. 15), respectively, of a protective cap for a joint according to another preferred embodiment of the present invention. FIG. 19 is a rear view (FIG. 16), a right side view (FIG. 17), and a left side view (FIG. 18). FIG. 19 is a CC cross-sectional view of FIG. 13, and FIG. FIG. 21 is an explanatory view showing a usage state of the protective cap for joints according to another preferred embodiment of the present invention. As shown in FIG. 12, as another preferred embodiment of the joint protective cap 20 of the present invention, a convex portion 15 may be provided at the end of the ceiling wall 11 on the release portion 14 side. By providing the convex portion 15, it is possible to make it difficult for the joint to come off from the release portion 14 (see FIG. 21). In this case, the height h1 (see FIG. 19) of the convex portion 15 is preferably 5 to 60% of the height of the side wall H from the viewpoint of easy attachment / detachment of the joint protective cap 20.

  In the illustrated example, the joint protective cap 20 is not provided with a bottom wall. However, the joint protective cap of the present invention is not limited to such a form, and the bottom wall is appropriately provided as necessary. It may be provided. FIGS. 22 and 23 are a perspective view and a rear perspective view, respectively, showing a use state of the protective cap 20 for a joint according to another preferred embodiment of the present invention, and FIG. The state before covering the cap 20, (b) shows a state where the joint 100 is covered with the joint protective cap 20.

  24 to 30 are a perspective view (FIG. 24), a front view (FIG. 25), a plan view (FIG. 26), and a bottom view (FIG. 27), respectively, of a protective cap for a joint according to another preferred embodiment of the present invention. FIG. 28 is a rear view (FIG. 28), a right side view (FIG. 29), and a left side view (FIG. 30), FIG. 31 is an EE sectional view of FIG. 25, and FIG. 32 is an FF sectional view of FIG. FIG. 33 is an explanatory view showing a usage state of the protective cap for joints according to another preferred embodiment of the present invention. As shown in FIG. 24, as another preferred embodiment of the joint protection cap 30 of the present invention, a convex portion 25 may be provided at the end of the side wall 22 on the release portion 24 side. In this case, as shown in the drawing, the convex portion 25 may be provided at the end portion on the release portion 24 side of the opposite side walls sandwiching the joint, but may be provided only on one side. In this case, the height h <b> 2 (see FIG. 27) of the convex portion 25 is preferably 5 to 30% of the width W of the opening from the viewpoint of easy attachment / detachment of the joint protective cap 30.

  In the illustrated example, the joint protective cap 30 is not provided with a bottom wall. However, the joint protective cap of the present invention is not limited to such a form, and the bottom wall is appropriately provided as necessary. It may be provided. FIG. 34 and FIG. 35 are a perspective view and a rear perspective view, respectively, showing a use state of the joint protection cap 30 of another preferred embodiment of the present invention, and FIG. The state before covering the cap 30, (b) shows the state where the joint 100 is covered with the joint protective cap 30.

  36 to 42 are a perspective view (FIG. 36), a front view (FIG. 37), a plan view (FIG. 38), and a bottom view (FIG. 36), respectively, of a protective cap for a joint according to another preferred embodiment of the present invention. 39), a rear view (FIG. 40), a right side view (FIG. 41), and a left side view (FIG. 42), FIG. 43 is a GG sectional view of FIG. 37, and FIG. It is explanatory drawing which shows the use condition of the protective cap for couplings of other suitable embodiment. As shown in FIG. 37, as another preferred embodiment of the present invention, the release portion 34 of the joint protective cap 40 may be made smaller than the diameter of the joint 100. By adopting such a configuration, the joint protective cap 40 is also difficult to come off from the joint 100. In this case, from the viewpoint of easy attachment / detachment of the joint protection cap 40, the width w of the release portion 34 (see FIG. 44) is preferably 70 to 95% of the diameter of the joint 100.

  Also in the present embodiment, in the illustrated example, the joint protective cap 40 is not provided with a bottom wall, but may be provided with a bottom wall as needed. 45 and 46 are a perspective view and a rear perspective view, respectively, showing a use state of the joint protection cap 40 according to another preferred embodiment of the present invention, and FIG. The state before covering the cap 40, (b) shows the state where the joint 100 is covered with the joint protective cap 40.

  47 to 53 are a perspective view (FIG. 47), a front view (FIG. 48), a plan view (FIG. 49), and a bottom view, respectively, of a protective cap for a joint according to another preferred embodiment of the present invention. (FIG. 50), a rear view (FIG. 51), a right side view (FIG. 52), a left side view (FIG. 53), and FIG. 54 is a cross-sectional view taken along line HH in FIG. 47A is a front perspective view, and FIG. 47B is a rear perspective view. As shown in the figure, when the convex portion 45 is provided at the end portion on the release portion side 44 of the side wall 42 of the joint protective cap 50, as shown in FIG. 47 (b), the boundary between the side wall 42 and the ceiling wall 41 is provided. A cut 46 is preferably provided. By providing the convex portion 45, the joint protective cap 50 can be prevented from falling off the joint, and by providing the cut 46 at the boundary between the side wall 42 and the ceiling wall 41, the joint protective cap 50 is fitted into the joint. In addition, the side wall 42 easily spreads outward and the fitting protective cap 50 can be easily fitted (see FIGS. 54 and 55).

  Also in the present embodiment, in the illustrated example, the joint protective cap 50 is not provided with a bottom wall, but the joint protective cap of the present invention is not limited to such a form, and as necessary. A bottom wall may be provided as appropriate. 54 and 55 are a perspective view and a rear perspective view, respectively, showing a use state of the joint protection cap 50 according to another preferred embodiment of the present invention, and FIG. The state before covering the cap 50, (b) shows a state where the joint 100 is covered with the joint protective cap 50.

  In the protective caps for joints 10, 20, 30, 40, and 50 of the present invention, it is preferable to use a transparent or translucent elastic body as the material. When the opaque protective material such as rubber is used as the material of the protective caps 10, 20, 30, 40, 50 for joints, the joints stored until the protective caps 10, 20, 30, 40, 50 for joints are removed are visually recognized. Can not do it. However, by using a translucent or transparent elastic body as the material of the joint protection caps 10, 20, 30, 40, 50, the joints and fittings housed in the joint protection caps 10, 20, 30, 40, 50 can be used. Since it can be visually recognized from the outside, it is possible to eliminate misunderstanding of components.

  In the present invention, the elastic body is not particularly limited, and a thermoplastic resin material such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer (EVA), etc. can be used. Therefore, polyethylene is preferable.

  The joint protective cap 10, 20, 30, 40, 50 of the present invention has a ceiling wall 1, 11, 21, 31, 41 and a side wall 2, 12, 22, 32, 42. It is only important that the release portions 4, 14, 24, 34, and 44 are provided in a part of the 12, 22, 32, and 42, and there are no particular restrictions on other specific shapes and the like of the cap. In the illustrated example, the shapes of the ceiling walls 1, 11, 21, 31, 41 and the bottom walls 4, 14, 24, 34, 44 are substantially square, but according to the shape of the joint to be stored, for example, the ceiling wall Further, the shape of the bottom wall may be circular, or may be half the shape of an ellipse. Moreover, the cross-sectional shape of the ceiling walls 1, 11, 21, 31, 41 is, for example, according to FIGS. 8 and 9, the ceiling wall 1 is horizontal with respect to the bottom wall 3, but its central portion is outside. It is good also as the circular arc shape which expanded toward.

1, 11, 21, 31, 41 Ceiling wall 2, 12, 22, 32, 42 Side wall 3 Bottom wall 4, 14, 24, 34, 44 Open portion 15, 25, 45 Convex portion 46 Cut 10, 20, 30, 40, 50 Protective cap for joint 100 Joint 101 Hose 102 Neck

Claims (3)

In the protective cap for joints made of an elastic body having a ceiling wall that protects the butted end surface and the inner peripheral surface of the joint, and a side wall that protects the side surface of the joint,
A release portion is provided in a part of the side wall , and a bottom wall is formed from the side wall toward the inside of the protective cap for the joint, and the bottom wall is a fitting portion into which the neck portion of the joint is fitted. And a holding cap for holding the neck .   The joint protective cap according to claim 1, wherein the elastic body is transparent or translucent.   The protective cap for joints according to claim 1 or 2, wherein the elastic body is polyethylene.

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