JPH0744452Y2 - Ratchet adapter for fittings - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ratchet type adapter which facilitates the operation of tightening and loosening a joint.

2. Description of the Related Art For example, in each home or the like, a water meter is connected to a pipe and housed in a narrow box buried underground. By the way, water meters must be replaced every eight years according to the Measurement Law. Conventionally, the replacement of water meters is a work in a narrow box, so rotate the cap nut of the joint connecting the water pipe and the meter little by little using, for example, pliers or pump pliers. I was going.

However, the replacement work of water meters in a narrow box is difficult and time-consuming because there is not enough space to rotate the bench or the like. An object of the present invention is to provide a ratchet adapter for application to a cap nut of a joint, which enables easy and quick replacement of a meter even in a narrow space.

The ratchet adapter 100 of the present invention is applied to a cap nut 19 connecting a meter 17 and a joint body 18. That is, the present invention comprises an annular portion 4 having a central hole 2 and a switching element housing opening hole 3 at one end of a short handle 1, a socket body 5, and a switching element 6. The socket body 5 is formed with six faces on its inner peripheral portion and is provided with a large number of engaging teeth 8 on its outer peripheral portion. The socket body 5 is rotatably fitted in the central hole 2. The switching element 6 is provided with switching operation projections 12 a and 12 b which are projected outward from the opening edge of the switching element storage opening 3.
Switching換子6, Ru HamaSosu the switching換子housing opening hole 3. Ring part 4
A stopper collar 7 is provided on the inner peripheral portion of one opening edge, and a stop ring 15 is further provided on the inner peripheral portion of the other opening edge so that the socket body 5 can be held.

[0002]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a ratchet adapter for a joint according to an embodiment of the present invention. FIG. 2 is a side view of a ratchet adapter for a joint according to an embodiment of the present invention. FIG. 3 and FIG. 4 are plan views of the switching element of one embodiment of the present invention engaged with the engaging teeth. FIG. 5 is a plan view showing a state in which the stop ring 15 and the socket body 5 are removed from the ratchet adapter for a joint according to the embodiment of the present invention. Figure 6
1 is a plan sectional view of a ratchet adapter for a joint according to an embodiment of the present invention. FIG. 7 is a plan view of a joint and a meter which are connected to a pipe in a water meter box and to which the ratchet adapter for a joint of the present invention is applied. As shown in FIG. 6, the joint ratchet adapter 100 of the present invention comprises an annular portion 4 having a central hole 2 and a switching element housing opening hole 3 at one end of a short handle 1, a socket body 5, and a switching element 6. . The short handle 1 is connected with an auxiliary handle such as a pipe to tighten or loosen the cap nut of the joint. In the annular part 4,
A central hole 2 and a switching element accommodating opening hole 3 which is a lateral hole partially in contact with and orthogonal to the central hole 2 are provided. The socket body 5 is fitted in the central hole 2 just enough to be freely rotatable. The socket body 5 is formed with a hexagonal surface on its circumferential portion so that the hexagonal cap nut of the joint can be fitted properly. Further, a large number of engaging teeth 8 are provided on the outer peripheral portion of the socket body 5. The switching element 6 is fitted into the switching element housing opening hole 3 so as to properly engage with the engaging teeth 8. The switching element 6 is provided with locking claws 11a and 11b that engage with the engaging teeth 8 so that the switching element projections can be protruded to the outside from the opening edges of the left and right sides or one side surface of the switching element housing opening hole 3. 12a and 12b are provided. In one aspect, the switching element 6 is further provided with an inverted V-shaped locking projection 16 at the center of the edge opposite to the locking claw. In this case, the switching operation projection 1
By pressing either 2a or 12b, the switching element is moved or rotated in the switching element housing opening hole. Here, in the case where the switching element 6 is of the type shown in FIG. 3, the pin 13 pivotally attaches substantially the center of the switching element in the vicinity of the approximate center of the switching element housing opening. Then, a storage hole 14 is provided so as to project from the rear wall of the switching element storage opening hole in the direction of the short handle, and the pressing ball 9 and the spring 10 are housed in this storage hole 14 and pressed against one surface of the locking projection 16. The ball 9 is pressed to stop the movement or rotation of the switching element. In another embodiment, as shown in FIG. 4, the locking claws 11a and 12b and the single switching operation projection 1 are provided.
A switch 6 having 2 and a spring 10 can also be used in the present invention. In this case, the switching element storage opening 3
The switching element 6 is moved at one position of the opening edge to switch the ratchet. In this case, the structure for housing the pressing ball 9 and the spring 10 in the housing hole 14 is unnecessary. To prevent the socket body 5 from coming off from the annular portion by providing a stopper collar portion 7 on the inner peripheral portion of one opening edge of the annular portion 4 and further providing a stop ring 15 on the inner peripheral portion of the other opening edge. You can Stop ring 15, after fitted socket body 5 on an annular portion 4 having a stopper flange portion 7, Ru further HamaSosu a predetermined portion of the annular portion provided with a step.
In addition, the joint ratchet adapter of the present invention can be formed by using various materials such as metal rags, but especially high strength plastics such as polypropylene, ABS resin, polyamide resin (eg, 6 nylon), DURACON, DURAX, etc. A material made of is preferable.

[000 3 ]

Next, the operation of attaching and detaching the meter of the water supply will be explained using the ratchet adapter for joints of the present invention.
As shown in FIG. 7, in the water meter box 21, the water pipe 20 and the water meter 17 are connected by the joint 18, and the ratchet adapter 100 of the present invention is applied to the cap nut 19 of the joint 18. For example, first, a pipe is connected to the short handle 1 and the switching operation projection 12a or 12b is pushed in the direction of loosening the screw. The pipe is rotated back and forth within the box by a possible angular range to loosen the screw. This operation is performed for the ratchet adapter 100 of the present invention in which both ends of the water meter are connected, and the water meter 17 is removed. Next, a new water meter 17 is installed, and the switching operation projections 12a, 12b of the ratchet adapter 100 of the present invention are pushed in the direction in which the screw is tightened, and the pipe is rotated. Repeat this operation to connect the other end of the water meter,
The new water meter 17 is connected to the water pipe 20.

As described above, by applying the ratchet adapter for a joint of the present invention to the cap nut of the joint, it becomes possible, for the first time, to easily and quickly replace the meter in a narrow box. became. Furthermore, since the ratchet adapter for fittings of the present invention is used infrequently, durability, strength, etc. can be moderate,
For example, those made of high strength plastics are more economical than those made of metal castings.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

FIG. 3 is a plan view of a switching element according to an embodiment of the present invention.

FIG. 4 is a plan view of a switching element according to an embodiment of the present invention.

FIG. 5 is a plan view showing a state in which a stop ring and a socket body are removed according to an embodiment of the present invention.

FIG. 6 is a plan sectional view of an embodiment of the present invention.

FIG. 7 is a plan view of an application example of the present invention in a water meter box.

[Explanation of symbols]

 1 Short handle 4 Annular part 5 Socket body 6 Switching element 8 Engaging tooth

Claims (1)

[Scope of utility model registration request] 1. A socket body having an annular portion having a central hole and a switching element accommodating opening hole at one end of a short handle, and having an inner peripheral portion having six faces and a large number of engaging teeth on the outer peripheral portion, is provided at the center. A switching element, which is rotatably fitted in the hole and is adapted to be properly engaged with the engaging tooth, is provided in the switching element housing opening, and the switching element is external to the opening edge of the switching element housing opening hole. A ratchet adapter for a joint , which is provided with a projection for switching operation protruding to the inner periphery of the annular portion , wherein a stopper collar portion is provided at the inner peripheral portion of the opening edge, and a stop ring is further provided at the inner peripheral portion of the other opening edge. Establishment
The ratchet adapter for the joint, which is characterized in that