JPH0651671U - Cap nut - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a cap nut that can be used afterwards by attaching it to both flanges. [Structure] A cap nut 30 having a stepped portion 31c and a screw portion 31a formed inside. The cap nut 30 has a left member 31 and a right member 32, which are vertically divided at a central portion, formed of resin. The member 31 is formed with an engagement hole 31e, and the right member 32 is formed with an engagement claw 32e that is engaged in the engagement hole 31e.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an improvement of a cap nut.

[0002]

[Prior art and its problems]

 Conventionally, as shown in FIG. 1, when a flange pipe 1 having a flange portion 1a protruding outwardly at a tip thereof is connected to a connection pipe 3, a cap nut 2 is used and is connected to the flange portion 1a. With the packing P intervening at the tip of the pipe 3, the cap nut 2 is screwed into the threaded portion 3a of the connection pipe 3 to connect the collar pipe 1, but the collar pipe 1 is only on one end side. In the case of the shape having the collar portion 1a, the cap nut 2 can be inserted into the collar tube 1 later, but as shown in FIG. 2, the protruding collar portions 1a and 1b are provided at both ends. In the existing two flanged pipes 1, it is necessary to insert the cap nut 2 into the both flanged pipes 1 in advance, and then the flanged portion 1a or 1b on one side is projected to the outside. The problem is that the cap nut 2 cannot be used for both of the collar pipes 1 later. There was.

Even when the cap nut 2 is used to connect the deodorizing duct 10 as shown in FIG. 3, such a deodorizing duct 10 has a large diameter portion 10c and a small diameter portion 10b, so that the collar portion 10a is There has been a problem that the cap nut 2 must be passed through the small diameter portion 10b before molding, and then the collar portion 10a must be subjected to flange processing. Further, with both metal flange pipes 1 and the like, the flange processing can be performed after the cap nut 2 is inserted, but when both flange pipes 1 and the like are made of resin or rubber, the collar portion 1 Since a and 1b are molded simultaneously by injection molding or the like, there is a problem that it is impossible to mold with the cap nut 2 inserted.

[0004]

[Means for Solving the Problems]

 The present invention has been made in view of the above conventional problems, and an object of the present invention is not to provide a cap nut that can be attached and used satisfactorily afterwards when connecting both collars and the like. Is a cap nut having a stepped portion and a screw portion formed on the inside, and the cap nut is vertically divided at the center to form resin in the left member and the right member, and the engagement hole is formed in one member The side member is formed with an engaging claw that can be engaged with the engaging hole.

[0005]

[Action]

 Since the cap nut is divided into a left member and a right member, it can be attached to both flange pipes and the like later and the engaging pawls can be engaged in the engaging holes to properly integrate the left member and the right member. Can be used.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 is an exploded perspective view of the split cap nut of the first embodiment. The split cap nut 30 is composed of a left member 31 and a right member 32, and the left member 31 and the right member 32 are substantially symmetrical. Has a small diameter portion 31b, 32b each having a stepped portion 31c, 32c. Female threads 31a, 32a are formed on the inside of the large diameter portion, and both ends project outward. The alignment protrusions 31d and 32d are formed, and the alignment protrusion 31d of the left member 31 is formed with an engaging hole 31e in a penetrating manner, while the alignment protrusion 32d of the right member 32 is protruded. The engaging claw 32e is formed so that the engaging claw 32e can be engaged in the engaging hole 31e. In the engaged state, the matching convex portion 31d of the left member 31 and the right member The matching convex portions 32d of 32 are joined in a matching manner.

By using the split split cap nut 30 as described above, the left member 31 and the right member 32 are fitted to the two flange pipes 1 as shown in FIG. The claws 32e can be engaged and integrated to be used, and both the collar pipes 1 may have the collar portions 1a and 1b formed at both end portions from the beginning, and resin and rubber moldings. Even if the product is a product, it is possible to satisfactorily connect it to a connecting pipe or the like by using the split cap nut 30.

Next, FIG. 5 is a perspective configuration view of the split type cap nut 40 of the second embodiment in an opened state. Also in the split type cap nut 40 of the present example, the left member 41 formed symmetrically. The right member 42 and the right member 42 are resin-molded. In this example, one end of the left member 41 and one end of the right member 42 are connected to each other by a thin resin portion 40a. The left member 41 and the right member 42 can be opened and closed. An engaging hole 41 e is formed in a penetrating manner in the matching convex portion 41 d on the opposite side of the thin portion 40 a of the left member 41, while the matching convex portion 42 d on the opposite side of the thin portion 40 a of the right member 42 is formed. Has an engaging claw 42e formed in a protruding shape. Incidentally, 41a and 42a are female screws formed in a large diameter portion, and 41b and 42b are small diameter portions in which step portions 41c and 42c are formed inside.

Also in the split type cap nut 40 as described above, the split type claw nut 40 can be used by being fitted into both the collar pipes 1 later and the engaging claws 42e being engaged in the engaging holes 41e to be integrated. Unlike the conventional case, it is not necessary to insert it into both the collar pipes 1 in advance, and it can be attached and used later.

[0010]

[Effect of device]

 According to the present invention, in a cap nut having a step and a screw formed inside, the cap nut is vertically divided into resin in the left member and the right member, and the engaging hole is formed in one member. However, the other member is formed with an engaging claw that can be engaged with the engaging hole, so that the left member and the right member can be subsequently fitted into both the collar pipes, etc., and the engaging claw can be engaged with the engaging hole. By inserting it, the left member and the right member are integrated, and the function of the cap nut can be satisfactorily produced.

[Brief description of drawings]

FIG. 1 is a half sectional view of a state in which a flange pipe and a connection pipe are connected by a conventional cap nut.

FIG. 2 is a perspective configuration diagram of both collar pipes.

FIG. 3 is a perspective configuration diagram of a deodorizing duct having a different diameter.

FIG. 4 is an exploded perspective view of the split cap nut of the first embodiment.

FIG. 5 is a perspective configuration view of a split cap nut of the second embodiment in an opened state.

[Explanation of symbols]

 1 Double collar pipe 1a Collar part 30,40 Split type cap nut 31,41 Left member 32,42 Right member 31a, 41a, 42a Female screw 31b, 41b, 42b Small diameter part 31c, 41c, 42c Step part 31d, 41d, 42d Aligning convex portions 31e, 41e Engaging holes 32e, 42e Engaging claws

Claims (1)

[Scope of utility model registration request] 1. A cap nut having a stepped portion and a screw portion formed on the inner side thereof. A resin is formed on a left member and a right member, which are formed by vertically dividing the cap nut, and an engaging hole is formed on a member on one side. Then
A cap nut, wherein an engaging claw that can be engaged with the engaging hole is formed on the other member.