JPH0547726B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to attaching desired deposits to the plate surfaces of various structures using bolts. especially,
This method uses bolts to attach deposits to the board surface where the back side of the board surface is obstructed and it is impossible to insert hands or tools into the board surface. Specifically, a hole large enough to allow the bolt head to be inserted is formed on the front surface of one side of the structure, and the bolt head and bolt to which the above-mentioned deposits are to be attached are inserted into the hole. In order to hold the head so that it does not fall out of the hole, thin, long, flat washers are connected with a string so that they can be pulled, and are inserted into the back of the hole one after another.

After this, when the string is pulled, the washer for fixing the bolt is inserted into the bolt and hits the head of the bolt. At the same time, a washer larger than the hole catches on the edge of the hole on the back side of the plate, fixing the bolt so that the head of the bolt does not slip out of the hole again. The present invention relates to a device for fixing an attached object bolt to an attached object, which allows a desired attached object to be attached to the fixed bolt using the bolt.

[Prior Art] As a prior art related to the present invention, the present applicant previously filed an application for a device for fixing the head of a bolt with a washer to the back side of a hole formed in a plate surface of a structure so that it does not come off. Korean Patent Application No. 86-
No. 6646 (Japanese Patent Publication No. 1-229108).

The above-mentioned invention of the prior application is such that after the head of the bolt is pushed into the back side of the hole formed in the plate surface of the structure from one side of the hole, the head of the bolt is further caught in the hole without coming off. The basic circular (disc-shaped) washer to be fixed is artificially divided into several pieces around the hole into which the screw is inserted. The cross section of each washer has a concave portion formed in the joining surface so that a constant thickness is maintained even when joining.

Even if the pieces of the washer overlap each other in the recesses and join together in a circular shape, the thickness of the washer basically remains constant, and these components are strung together with strings. After making sure that they do not come apart, insert the head of the bolt into the holes one after the other, and then pull the string so that the pieces of washer are joined together in a circular shape. However, it got caught on the head of the bolt,
First, grab the bolt, then fix the bolt in the hole of the structure plate so that it will catch on the back of the hole and the head of the bolt will not come off because it is larger than the washer hole. It is designed so that it can be attached by

The problem with the prior invention mentioned above is that the back side of the hole is blocked, making it impossible to use hands or tools, so it is necessary to insert bolts and pieces of these washers from the front part of the hole to connect them. However, just by pulling the string, these washer pieces cannot be joined in an accurate circular shape according to the joining position, and since there are many parts of the washer, it is necessary to form each of these washi pieces separately. It is extremely troublesome and inconvenient to guide the bolts through the screw holes that have been inserted one by one, and the time required to fix the bolts is long, making it difficult to work efficiently.

In the invention of the earlier application, a circular washer is divided into halves or into two or more pieces, and two guiding wires are connected to each piece. After passing each piece one by one through the fastening hole and positioning it on the opposite side, pull each guide wire so that it gathers around the inside end of the bolt head to support the bolt head and tighten the washer. It is designed to perform its original function, and cannot be used as a nut. Moreover, in the invention of the prior application, the through hole of the washer must be cut into halves or more, so if the fastening force is loosened even a little, there is a high risk that each of the washers will come radially outward and separate from the bolt.

In order to prevent these washers from scattering, a circular concave groove frame is formed on the inner surface of the bolt head.
There was a problem in that the outer surface of the washer had to be accompanied by a complicated auxiliary structure, such as a protruding frame. Note that the split washer can only be connected to its original position by forming a large number of guide line guide holes on all sides in the washer on the opposite side so that the guide line is drawn closer to its own position, so the fabrication process is as simple as that. There are the above-mentioned difficulties and other problems that cause an increase in production costs.

Furthermore, as another prior art, several anchors are formed on the head of a bolt so that they can be expanded and closed like an umbrella bone, and the bolt is inserted through a hole formed in some structure. In some cases, after the head was pushed through the back of the hole, an anchor was expanded on the back side of the hole so that the bolt could be caught in the hole and fixed. However, although this is similar to the present invention in terms of usage, the technical concept belongs to a different field from the present invention, so a description thereof will be omitted.

[Summary of the Invention] In the present invention, in which a bolt is fixed to a plate surface of a structure in order to attach a desired attachment to a certain structure with the bolt, there is provided a bolt formed on a plate surface of the structure. This relates to a device for fixing a bolt head portion from one side of the hole into the hole so that it does not come off under conditions where the back side of the fixing hole is obstructed and it cannot be handled by hand or tools.

In other words, a square or circular shape of a normal size that can be fitted into a hole formed in the plate surface of a certain structure and fixed in order to attach the desired attachment to a certain structure with a bolt. A bolt of any length is formed with a head, and the width on one side of the bolt hole is significantly narrower than the width on the opposite side, allowing the bolt to be inserted toward the hole where the bolt is fixed. A thin, long, flat rectangular or oval fixing washer that can be used to grip and secure the head of a bolt so that it does not come off; It has a sleeve for gripping the bolt, an external fixing washer consisting of a flange, and a string attached to the end of the bolt that serves to easily guide these fixing washers towards the bolt hole. It is a device that consists of a set of elements such as a warhead-shaped guide and a nut that ultimately securely fixes the bolt to the plate surface of the structure.

After pushing the bolt head and the inner fixing washer etc. into the hole on the outside of the bolt fixing hole and passing it through, pull the guide string connected to the end of the bolt from the outside of the hole. As the bolt is inserted into the bolt hole of the internal fixing washer, the head of the bolt hits the washer, and the washer contacts the back of the hole at right angles to the bolt, causing the bolt to come off toward the outside of the hole. The structure is characterized in that the outer washer and the nut can be tightened with bolts one after another together with the deposits to attach the desired deposits to the structure.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIGS. 1 and 3 are diagrams showing an embodiment of the present invention in which desired deposits are attached to the plate surface of a structure using bolts. That is, a bolt hole 60 having a diameter of 2R is formed in the plate surface of the structure 61 to allow the head 11 of the bolt 10 for attaching the deposit to enter smoothly. Bolt 1 to which deposit 100 is attached
0 is the commonly used hexagonal or circular head 1
1 is formed, and a normal thread groove 13 is formed.

At the end 12 of the bolt 10, there is a bullet-shaped guide 9.
0 is integrally connected to the bolt 10 by a connecting screw 91 and a screw hole 15 on the bolt side 10. One end 81 of a string 80 is connected to the tip of the guide 90, and the string 80 can be used to pull the bolt from outside the hole 60.

The head 11 of this bolt 10 is inserted into the hole 60.
The internal fixing washer 31, which is fixed to the hole 60, is formed into a long and thin shape by cutting a portion of a circular plate considerably larger than the diameter 2R of the hole 60 and making it parallel to the left and right sides. Left and right width W of the cut parallel part
is a width that allows smooth entry into the hole 60. In the center of this internal fixing washer 31,
A washer hole 39 is provided. A circular protrusion 36 is formed on the periphery of one side of the washer hole 39 so that the bolt 10 can be inserted accurately. A bolt 10 is connected to one side 33 of this internal fixing washer 31 by connecting strings 50, 50.
It can be pulled from the hole 60 like a string 80 connected to the hole 60.

Furthermore, the outer fixing washer 40 has a hole 4 in the center.
6, and a protrusion 47 is also formed at one peripheral edge of this hole 46. The bolt 10 can be inserted accurately from the outside of the hole 46. A hole 45 is provided on the side of the protrusion 47 of this washer 40 as required.
holes 45, 45 of the inner fixing washer 31.
It is designed to penetrate. Further, the strings 50, 50 passed through the protective slots 44 formed in the radial direction on the outer periphery of the washer 40 can be pulled radially outward.

However, the strings 50, 50 are not necessarily necessary. Thereafter, these elements, including the nut 20 that finally connects the deposit 100 to the bolt 10, are assembled into a bolt fixing device.

The procedure for depositing a desired deposit 100 using the apparatus of the present invention is clearly shown in FIG. That is, among the parts of the bolt fixing device of the present invention shown in FIG. Secure the string and insert it through the hole 60 formed in the structure 61. At this time, the strings 80, 5 are connected to the outside of the hole 60.
0.50 is growing. Therefore, if the string 80 is pulled appropriately, the guide 90 of the small bullet head connected to the end of the bolt 10 will be released from the inner washer 3.
1, and this washer 31 is inserted into the bolt 10.

At this time, if the string 80 connected to the tip of the guide 90 is further pulled, the main body of the bolt 10 is exposed outside the hole 60 while the surface 37 on the opposite side of the inner fixing washer 31 is attached to the head of the bolt. Depending on the extent to which the bolt is pulled toward the bolt 11, the peripheral edge of the washer hole 39 is caught on the seat surface 14 of the head 11 of the bolt 10 and comes into close contact. At the same time, this washi 31
One side 33 of the structure 61 comes into close contact with the periphery of the hole 60 of the structure 61.

The protrusion 36 of the washer 31 guides and adjusts the bolt 10 to an accurate position while being inserted into the hole 60 of the structure. At this time, the main body of the bolt 10 protruding from the hole 60 of the structure 61 is tied with the string 8.
While pulling at 0, the outer fixing washer 40 and the attachment 100 are successively attached to the main body of the bolt 10 through the lower end 12.

Finally, the nut 20 is inserted onto this, and the nut 20 is inserted into the thread groove 1 of the bolt 10 on the outside of the hole of the structure.
Step 3: Tighten and connect with a tool. As a result, while the protruding portion 47 of the external fixing washer 40 is also inserted into the hole 60 of the structure 61, the position of the bolt 10 is maintained correctly perpendicular to the plate surface of the structure, and finally the nut 20 is tightened. , the desired deposit 100 can be firmly adhered and maintained on the plate surface of the structure 60.

Furthermore, if the plate surface of the structure is a curved surface, for example, attach an arbitrary substance to the surface of a tube with a round curved surface, or attach a nipple with a tubular head or a socket. Even when connecting such devices, a bolt fixing device having a function similar to that of the present invention can be used as is. However, in order to match the shape, a curved washer or the like is used.

In the drawings, FIGS. 4 to 6 are views showing an embodiment of the present invention in which a nipple is connected and fixed to a curved surface of a structure. That is, the tubular structure 61 is provided with a hole 60 for attaching the nipple 10a. A groove 16 is formed symmetrically about the center line on the peripheral edge of the head 11 of the nipple 10a, and a hole 14 for guiding liquid or gas flowing into the tubular structure 61 is formed through the main body of the nipple 10a. ing. A small bullet-shaped guide 90 is coupled to the tip of the nipple 10a, and a string 80 is connected to the tip. For this reason,
While holding the string 80, insert the hole 6 of the structure 61.
Can be inserted into 0.

Next, the inner fixing washer 31 connected through the string 80 is inserted into the hole 60 in the same manner as the bolt 10. A cylindrical socket 33 is formed around the hole 39 of this washer 31. The head 11 of the nipple 10a is completely inserted into the hole 39 of the washer 31, and the head 11 of the nipple 10a is completely inserted into the hole 39 of the washer 31.
The main body of the nipple 10a comes out to the outside of the nipple 9. The front surface of this washer 31 is curved to correspond to the curved surface of the structure.

After pushing the nipple 10a and the inner fixing washer 31 into the hole of the structure, when the string 80 is pulled on the outside of the hole 60, the body of the nipple 10a is guided by the guide element 90 to the inner fixing washer 31. The head 11 of the nipple 10a is inserted into the socket 33 formed in the hole 39 of the washer 31 when both are further pulled.

At this time, the main body of the nipple 10a is designed to come out of the hole 60 of the structure 61, so if you grab the main body of the nipple 10a by hand or with a tool and twist it left and right, the nipple 10a will be formed inside the socket 33 of the washer 31. Groove 1 formed in head 11 of protrusion 37
At this time, if you grab the main body of the nipple 10a and twist it left and right, the washer 3 will move together with the combined inner fixing washer 31.
The nipple 10a is attached to the string 8 so that the curved surface of the structure 60 matches the curved surface of the structure 60.
Use 0 to attract.

Next, the packing 70, the outer fixing washer 40, which has a curved surface on one side and a flat surface on the other side, and the packing 70a are attached to the nipple 1.
Insert them into the 0a body one after another. Finally, the nut 20 is screwed into the threaded groove 13 of the nipple 10a and tightened, thereby firmly connecting the desired nipple to the tubular structure from the outside of the hole in the structure.

In the present invention, the nipple 10a is attached to the tubular structure.
When joining, use the nipples shown in Figure 4 instead of the bolts used in Figure 1, and use the same washer, etc., in place of the bolts used in Figure 1. If you want to attach
Use the bolt shown in Figure 1 instead of the nipple shown in Figure 4, and use a curved washer.

[Effect of the invention] In particular, in the present invention, since the washer is a thin and long flat single plate, these bolts and
After inserting the inner fixing washer that grips the bolt into the hole, connecting the bolt to the washer requires much more manual work than the conventional washer, which is divided into half or more of the circumference. The unnecessary point is that the inner washer does not come off from the bolt head, so the supporting force it provides is stable and firm, and once the washer is tightened with the nut, the desired attachment can be firmly attached to the structure without the washer coming off. It has the advantage of being attached.

In addition, since the inner washer can be fastened without a string, it has the advantage of being economically inexpensive to manufacture and convenient to handle. In addition, depending on the shape of the structure, the surface of the washer can be appropriately formed to suit the structure.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view showing the bolt of the invention fixed to a structure and attached with deposits, Fig. 3A is Fig. 2 Figure 3B
is a cross-sectional view taken along the line a-a in FIG. 2, FIG. 3C is a cross-sectional view taken along the line b-b in FIG. 2, and FIG. FIG. 5 is a partial cross-sectional view showing the bolt of the present invention fixed to a curved structure with deposits attached, and FIG. 6A is the back side of the hole in FIG. 5. FIG. 6B is a sectional view taken along the line c--c in FIG. 5. 10...Bolt, 11...Head, 13...Thread groove, 15...Screw hole, 16...Groove, 20...Nut, 31, 40...Washer, 33...Socket, 37...Protrusion, 39 ,46...washia hole,
60... Hole, 61... Structure, 80... String, 9
0...guide, 91...screw.

Claims (1)

[Claims] 1. A small warhead-shaped guide 90 is attached to the tip of the screw 9.
1 through a screw hole 15 and having a hexagonal or circular head 11, the bolt 10 is inserted into the hole 60 of the structure 61 with a string 80 connected to the tip of the guide 90. the bolt 10 for attaching deposits, and the bolt 10 attached to the outer periphery of the first washer hole 39;
A protrusion 36 is formed to accurately support the head 11 on the back side of the structure 61, and is thin and long for fixing inside the hole 60 to prevent it from slipping out of the hole 60. An inner fixing washer 31 and a protrusion 47 for accurately supporting the bolt 10 are formed on the outer periphery of the second washer hole 46 on the outside of the structure 61, and an outer fixing part for grasping the bolt 10 from the outside. and a thread groove 13 formed on the outer periphery of the bolt 10 with the inner fixing washer 31 and the outer fixing washer 40 inserted into the hole 60.
A fixing device for an attachment bolt against an attachment, characterized in that it comprises a nut 20 that is screwed into and firmly fastened, and finally consists of a set of these components. 2. The inner fixing washer 31 is formed into a substantially rectangular parallelepiped shape with at least one side longer than the diameter of the hole 60, and the width of the other side of the substantially rectangular parallelepiped is such that it can be appropriately inserted from the hole 60; One end surface of the No. 1 washer hole 39 is connected to the head No. 1.
2. The device for fixing an attachment bolt to an attached object according to claim 1, characterized in that the device has a structure in which the head 11 portion can be gripped on the back side of the hole 60. 3. The device for fixing an attached bolt to an attached object according to claim 1, characterized in that a groove 16 is formed on the outer periphery of the head 11 symmetrically with respect to the center line of the bolt 10. 4. A cylindrical socket 33 is formed on the inner fixing washer 31, a protrusion 37 is formed inside the socket 33 so as to fit into the groove 16, and the other end surface of the inner fixing washer 31 4. The device for fixing an attachment bolt to an attached object according to claim 3, wherein the device is curved to match the surface shape of the structure 61. 5. One surface of the outer fixing washer 40 is curved to match the surface shape of the structure 61;
2. The device for fixing an attachment bolt to an attached object according to claim 1, wherein the other surface is formed flat. 6 Attach the string 5 to one side of the inner fixing washer 31.
2. The device for fixing an attachment bolt to an attached object according to claim 1, wherein the bolts are connected to each other. 7. The device for fixing an attachment bolt to an attached object according to claim 1, wherein a packing 70 can be interposed between one side of the inner fixing washer 31 and the outer fixing washer 40. 8. The first aspect of the present invention is characterized in that the shape of at least one surface of the inner fixing washer 31 and the outer fixing washer 40 is formed in accordance with the surface shape of the structure 61. A device for fixing an adhering bolt to an adhering object according to item 1 or 3. 9. The device for fixing an attachment bolt to an attached object according to claim 1, wherein the inner fixing washer 31 and the outer fixing washer 40 are not provided with the protrusions 36, 47.