JP3583616B2 - A cover for preventing accidents to be inserted into the square head or nut of the bolt - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for preventing accidents that is fitted over a square head or a nut of a bolt.
[0002]
[Prior art]
Conventionally, there are frequent incidents (bad things) directly related to crime, such as removal and obstruction of bolts and nuts used in various buildings such as steel towers, buildings, buildings, structures, etc., or various transportation systems. ing. However, there are few products (products) and literatures on bolts and nuts that are useful for preventing such wrongdoing, and thus improvements are desired.
[0003]
In addition, as a general measure for preventing the wrongs, there is a means for fixing the bolt and the nut by welding (weld fixing). However, in the case of welding and fixing, since welding equipment is required, there is a problem in that, for example, locational limitations, conditional limitations, and uniform accuracy cannot be achieved. Therefore, there is a need for a bolt and nut structure and a structurally established technology that can solve the problem of welding fixation and help prevent wrongdoing and loosening.
[0004]
In view of the above-mentioned demands, if the improvement is viewed in the technical literature, there are the following literatures. (1) A bolt sealing device and a method of using the same disclosed in Japanese Patent Application Laid-Open No. Hei 9-137820, wherein a C-ring is provided between an outer concave groove of a second tightening nut engaged with the bolt and an inner concave groove of a sealing cap. By disposing the C ring in the inner and outer concave grooves, the sealing cap is prevented from coming off. (2) A seal nut for preventing loosening described in Japanese Patent Application Laid-Open No. 7-63211, wherein a resin member having a screwless blind hole having a diameter substantially equal to the inner diameter of the female screw is provided on a screw shaft of a metal nut having a female screw. The resin member has a configuration in which an annular protrusion located at the front end of the metal nut is formed, and a dish-shaped seal portion is provided that expands forward, so that the nut can be prevented from rusting and the nut can be prevented from loosening. . (3) The locking nut of Japanese Utility Model No. 5-96531, in which an elastic reinforcing plate is embedded in the nut, and the tip of the elastic reinforcing plate is pressed against the screw shaft of the bolt by screwing in the nut, Prevent relaxation.
[0005]
[Problems to be solved by the invention]
The above-mentioned documents (1) to (3) have a configuration useful for preventing the nut from loosening because the conventional lock nut is provided with a slack preventing means. As described above, since it is a single loosening prevention means, it is useful for preventing loosening, but it is not necessarily effective against wrongdoing.
[0006]
Hereinafter, the reason will be described. : Reason 1 is that, in Document (1), since the locking nut and the sealing cap are synchronized, when the sealing cap is forcibly turned, the tightening nut may be simultaneously removed (removed). There is. Further, in the literatures (2) and (3), since the nut itself is exposed, there is a possibility that the nut may be easily removed with a fastener such as a spanner. : Reason 2 is that the shape of the sealing cap becomes the shape of the tightening nut in the document (1), and there is a possibility that it will be used for malicious purposes, or the documents (2) and (3) may be the same as those described above. There is.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is that the cover can be securely and instantly locked by rotating the cover after the cover is fitted over the corner or nut of the bolt, and the corner or nut of the bolt which does not come off once locked. Provided is a cover for preventing wrongdoing, which is inserted into the cover.
[0008]
Claim 1 is a cover for preventing accidents that is fitted over the square head or nut of the bolt,
The cover is provided with a locking member such as a washer or a plate provided on the square head of the bolt or the bearing surface of the nut, a locking member biting and locking the locking member, and the locking member in the axial direction of the bolt. It consists of a cover body that swings
By rotating the cover to narrow the gap between the cover main body of the cover and the corner of the bolt or the nut, the lock member is swung, and the claw of the lock member is engaged with the locking member and locked. It is characterized by the following.
[0009]
The invention according to claim 2 is a cover for preventing accidents that is fitted over the square head or nut of the bolt, and after the cover is fitted over the square head or nut of the bolt, the cover is rotated. Accordingly, a lock member that can be reliably and instantly locked is provided.
[0010]
According to a second aspect of the present invention, the lock member includes a plurality of claw pieces and a ring connecting the claw pieces .
[0011]
A third aspect of the present invention provides a lock member that is a cover for preventing accidents fitted over a square head or a nut of a bolt, and that can reliably bite and lock the locking member.
[0012]
Claim 3 is a configuration in which a spacer is interposed between the locking member and the base or the connecting member.
[0013]
The invention according to claim 4 is a cover for preventing accidents to be fitted over the square head or nut of the bolt, and after the cover is fitted over the square head or nut of the bolt, the cover is rotated. Accordingly, a locking member that can be securely and instantly locked is provided.
[0014]
According to a fourth aspect, the locking member is constituted by a spring washer.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIGS. 1 and 2, a connecting member is attached to a base of a steel tower, a structure, or the like, and a bolt is penetrated through a locking member and a spacer between the base and the connecting member. In a state where the nut is screwed in through the stop member and the spacer, and the base and the connecting member are tightened, several claw pieces (each claw piece) of the lock member of the cover are connected to the cover body and the bolt. The cover is inserted into the corner head or the nut by inserting the cover into a large gap formed by the corner head or the nut (the valley surface of the cover body and the corner of the bolt or the valley surface of the cover body and the nut). Fit. By this operation, each claw piece is inserted into the large gap, and the claw side of each claw piece is located inside the locking member (the claw side is located on the peripheral surface of the spacer). The locking member is not locked, and the so-called locking member is open.
[0016]
When the cover is rotated in any direction as shown in FIGS. 3 and 4 from a state where the lock member is released, each claw piece is moved from the trough surface or the trough surface toward the head angle surface or the angle surface. You. Along with this movement, the gap changes from the large gap to the small gap, and the buttocks of each claw piece are pushed up. The nail side of each nail piece is pushed down. That is, each claw piece swings. Due to the swing of each claw piece, the claw side is locked (bite-locked) inside the locking member. The so-called cover is fitted over the square head / locking member or nut / locking member of the bolt, and each claw piece of the cover is locked by the locking member of the bolt or nut. The cover is fitted and locked to the square head of the bolt and the locking member or the nut and the locking member).
[0017]
With such an operation and procedure, when the cover is fitted and locked to the square head / locking member or the nut / locking member of the bolt, the cover is only idled, no matter how much the cover is turned, and the above-mentioned bite is obtained. The lock-in relationship cannot be released. Therefore, the bolt or nut which is screwed is not removed. That is, the configuration is useful for preventing wrongdoing.
[0018]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0019]
Numeral 1 denotes a corner head A1 of the bolt A or a nut B. An example in which the nut B is used for the nut B will be described later. A washer 2 (corresponding to a locking member) that is in contact with a bearing surface A2 of A1, and a spacer that is interposed between the washer 2 and the base X and that forms a space between the washer 2 and the base X. 3, a lock member 4 composed of several pawls 411 bitingly engaged with the washer 2 and a ring 412 connecting the pawls 411, and the bolt provided with the washer 2 and the lock member 4. A is composed of a cover main body 5 that is fitted over the square head A1 of A. As described above, the cover 1 has a structure in which the lock member 4 is engaged with the washer 2 by being fitted over the square head A1 of the bolt A and rotating by a predetermined angle.
[0020]
In the case of a cover for preventing accidents that is fitted over the nut B, the cover 1 is interposed between the washer 2 that is in contact with the bearing surface B2 of the nut B and the washer 2 and the connecting member Y. And a lock comprising a spacer 3a forming a space between the washer 2 and the connecting member Y, a plurality of claw pieces 411 biting into the washer 2 and a ring 412 connecting the respective claw pieces 411. It comprises a member 4 and a cover main body 5 which is fitted over the nut B on which the washer 2 and the lock member 4 are provided. As described above, the cover 1 has a structure in which the lock member 4 is locked to the washer 2 by being fitted over the nut B and rotating by a predetermined angle.
[0021]
[0022]
Each of the claw pieces 411 constituting the lock member 4 is moved from the head valley surface A3 of the square head A1 of the bolt A toward the head corner surface A4. Along with this movement, the gap G changes from the large gap H to the small gap H1, and the tail side 411b of each claw piece 411 is pushed up. The nail side 411a of each nail piece 411 is pushed down. That is, each claw piece 411 swings. The swing of each of the claw pieces 411 locks the claw side 411 a inside the washer 2. The cover 1 is fitted over the square head A1 and the washer 2 of the bolt A, and the claws 411 of the cover 1 are locked to the washer 2 of the bolt A. Each claw piece 411 constituting the lock member 4 is moved from the valley surface B3 of the nut B toward the corner surface B4. Along with this movement, the gap G changes from the large gap H to the small gap H1, and the tail side 411b of each claw piece 411 is pushed up. The nail side 411a of each nail piece 411 is pushed down. That is, each claw piece 411 swings. The swing of each of the claw pieces 411 locks the claw side 411 a inside the washer 2. The cover 1 is fitted over the nut B and the washer 2, and the claws 411 of the cover 1 are engaged with the washer 2 of the nut B.
[0023]
【The invention's effect】
According to the first aspect of the present invention, an evil prevention cover includes a locking member provided on a square head of a bolt or a seat surface of a nut, a locking member that bites into and locks the locking member, and a locking member. The cover body swings in the axial direction of the bolt, and the rotation of the cover swings the lock member, and the claw of the lock member is engaged with the engagement member to be engaged . Therefore, by rotating the cover after the cover is fitted to the corner of the bolt or the nut, the cover for preventing accidents is securely and instantly locked to the bolt or the nut. Also, it is possible to provide a cover for preventing wrongdoing that does not come off once locked.
[0024]
According to a second aspect of the present invention, the lock member includes a plurality of claw pieces and a ring connecting the claw pieces . Therefore, by inserting the cover for preventing wrongdoing into the square head or nut of the bolt and then rotating the cover, the cover for preventing wrongdoing can be securely and instantly attached to the bolt or nut via each claw piece. Locked to. Also, it is possible to provide a cover for preventing wrongdoing that does not come off once locked.
[0025]
The invention according to claim 3 is a configuration in which a spacer is interposed between the washer and the base or the connecting member. Therefore, by inserting the cover for preventing wrongdoing into the square head or nut of the bolt and then rotating the cover, the cover for preventing wrongdoing is securely attached to the bolt or nut via the spacer and each claw piece. And it can be locked instantly. In addition, it is possible to provide an evil prevention cover capable of securely engaging and locking the washer.
[0026]
According to a fourth aspect of the present invention, the washer is constituted by a spring washer. Therefore, a cover for preventing an accident inserted into the square head or the nut of the bolt. The cover is rotated after inserting the cover into the square head or the nut of the bolt to prevent the accident. Cover can be securely and instantly locked to a bolt or a nut via locking between each claw piece and a spring washer. In addition, it is possible to provide a cover for preventing accidents utilizing the elasticity and reliable locking of the washer.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a use state and a state where a locking member is opened.
FIG. 2 is a cross-sectional view taken along line II of FIG.
FIG. 3 is a cross-sectional view of the roll of FIG. 1;
FIG. 4 is a cross-sectional view of another example of FIG. 1;
FIG. 5 is a cross-sectional view illustrating a use state and a state where a locking member is locked.
FIG. 6 is a cross-sectional view of FIG.
FIG. 7 is a schematic scale diagram of a main part in a state used for a steel tower.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover 2 Washer 3 Spacer 3a Spacer 4 Lock member 411 Nail piece 411a Nail side 411b Butt side 412 ring 5 Cover body A Bolt A1 Square head A2 Seat A3 Head valley A4 Head valley B Nut B2 Seat B3 Valley B4 Corner H Large gap H1 Small gap X Base Y Connecting member

Claims (4)

It is a cover for preventing accidents to be inserted into the square head of the bolt or the nut,
The cover is provided with a locking member such as a washer or a plate provided on the square head of the bolt or the bearing surface of the nut, a locking member biting and locking the locking member, and the locking member in the axial direction of the bolt. It consists of a cover body that swings
By rotating the cover to narrow the gap between the cover main body of the cover and the corner of the bolt or the nut, the lock member is swung, and the claw of the lock member is engaged with the locking member and locked. A cover for preventing an accident inserted into a square head or a nut of a bolt. 2. The cover for preventing an accident inserted into a square head or a nut of a bolt according to claim 1, wherein the lock member is constituted by several claw pieces and a ring connecting the claw pieces . 2. The cover for preventing an accident inserted into a square head or a nut of the bolt according to claim 1, wherein a spacer is interposed between the locking member and the base or the connecting member. 2. The cover for preventing a wrong fit of the bolt head or the nut according to claim 1, wherein the locking member is constituted by a spring washer.

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