JPS6231711A - Connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a joining tool, and is particularly characterized by joining two things with an appropriate distance between them.

(Prior Art) In order to fix two items with bolts, a method is adopted in which a bolt 2 is inserted into one item 1 and then screwed into the other item 3. That is, one thing 1 is clamped between the other thing 3 and the head 4 of the bolt 2 to fix them together.

Of course, in this case, the two will be in close contact with each other, so if you want to join them with an appropriate distance between them, insert the spacer 5 between the two parts 1 and 3 and tighten the bolts. .

(See Figure 3) By the way, when installing a handrail for stairs on the wall of a house, for example, it is necessary to leave some space between the wall and the handrail. It is important to attach the handrail to the wall so that the head is not exposed, and if you simply insert a spacer between the wall and the handrail and tighten the handrail with bolts as above, the head of the bolt will be attached to the handrail. It is unsightly and even dangerous because it is exposed on the inside surface. However, in the past, there was no suitable joining method for such cases.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned points, and the present invention has been made in view of the above-mentioned points. , and the spacer has the function of a bolt head so that the bolt can be tightened by turning the spacer.

(Example) The present invention will be specifically described below based on the illustrated example.

In FIG. 1, reference numeral 11 is a bolt, and 12 is a spacer. The bolt 11 is interposed between the two objects 13 and 14, and screws into the joint surfaces of the two to join them, and the screws on both sides of the ball are wound in opposite directions. One side 11a has a right-hand thread, and the other side 11b has a left-hand thread. The spacer 12 is used to maintain a certain distance between two objects when they are joined.
The bolt 11 is attached to the center of the bead and has the function of a bolt head, and by turning it, the bolt 11 is turned.

Therefore, the spacer 12 is formed so that it can be turned with a bolt tightening tool such as a spanner, and has a hexagonal columnar outer shape as shown in the figure, for example.

By the way, the spacer 12 is formed separately from the bolt 11 and is attached to the bolt 11 so as to be slidable in the longitudinal direction thereof. This point is the main part of the present invention, and the object 1
Even if there is a difference between the amount of screwing of the bolt 11a to the object 14 and the amount of screwing of the bolt 11b to the object 14, the spacer 12 moves to the left or right along the pole) 11 to absorb the difference, Both objects 13 and 14 are always in contact with both ends of the spacer 12. For this reason, the spacer 12 is formed into a cylindrical shape, and an engaging member 15 is attached to the bolt 11 at an intermediate position. The force is transmitted to the engaging member 15, thereby causing the bolt 11 to rotate.

That is, the spacer 12 is attached to the bolt 11 with respect to the engagement member 15.
They fit in such a way that they slide in the longitudinal direction and mesh in the rotational direction.

By the way, the figure shows an example in which the bolt 11 is formed so that the pitch of the threads on one side 11a is different from the pitch of the threads on the other side. This is the two articles 13 to be joined.
This corresponds to the difference in the materials between and 14, and is not necessarily limited to forming in this way. When both are made of similar materials, it is sufficient to make the pitch of the threads of the bolt 11 the same on the left and right sides.

(Function) When attempting to join two items using this joining tool, insert both ends of the bolt 11 into the threaded holes of each item, and tighten the bolts in the same way as with normal bolts. . Then, the bolt 11 enters into the interior of both articles, so that the two articles gradually approach each other in appearance, and eventually come into contact with the spacer 12 and stop with the spacer sandwiched between them, thus joining the two articles.

In this case, one end of the bolt 11 is slightly threaded into one of the objects in advance so that the bolt protrudes from the object, and then the other end of the bolt is fitted into the threaded hole of the other object. It is also a good idea to tighten the bolts.

Of course, in this case, the degree of threading of the bolts into the two articles is different, but this difference is absorbed by the spacer sliding left and right.

(Effects) As detailed above, the present invention has screws wound oppositely to each other on both ends of a bolt, and a spacer is attached to these so as to be slidable in the longitudinal direction of the bolt. Since the bolts contact the spacer even if the bolts are screwed to different depths, the bolts can be reliably joined.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is an explanatory view showing normal bolt tightening.

Claims (1)

[Claims] Screws with opposite windings are screwed onto both ends of the bolt, an engaging member is attached to the middle of the screws, and a cylindrical spacer that slides only in the longitudinal direction of the bolt is fitted to the engaging member. A joint characterized by being attached