KR-102965047-B1 - BOLT FASTENING DEVICE THAT FASTENS MULTIPLE BOLTS

Abstract

The present invention relates to a bolt fastening device for fastening a plurality of bolts, comprising a plurality of bolt fastening legs having a bolt fastening tap at the end side that can be fitted into a tool insertion groove of a bolt head, a bolt fastening housing part in which the plurality of bolt fastening legs are rotatably positioned, and a bolt fastening rotational force transmission part rotatably positioned at the center of the bolt fastening housing part and rotated by a rotating tool to rotate each of the plurality of bolt fastening legs. When assembling a cover having a waterproof structure by fastening a plurality of bolts, the plurality of bolts can be fastened at once, thereby preventing defects such as the O-ring detaching from the O-ring groove during the assembly process and significantly improving the reliability of the waterproof structure.

Inventors

• 이규상
• 한동균
• 황민철

Assignees

• 한화에어로스페이스 주식회사

Dates

Publication Date

20260513

Application Date

20221227

Claims (14)

1. A plurality of bolt fastening legs, each having a bolt fastening tap on the end side that can be inserted into a tool insertion groove of the bolt head; A bolt fastening housing portion in which a plurality of the above-mentioned bolt fastening leg portions are rotatably positioned; and A bolt fastening rotational force transmission part rotatably positioned at the center of the above-mentioned bolt fastening housing part and rotated by a rotary tool to rotate each of the plurality of above-mentioned bolt fastening leg parts; An upper surface portion coupled to the upper part of the above-mentioned bolt fastening housing portion; and A housing support member mounted on the above-mentioned bolt-fastening housing member and detachably attached to a cover to be assembled by magnetic force to support the position of the bolt-fastening housing member; The above-mentioned rotational force transmission unit for bolt fastening is, A main rotating shaft portion protruding from the upper portion that penetrates the upper surface of the bolt fastening housing portion and is connected to a rotating tool, and a central rotating gear portion having a first gear tooth provided on its outer circumference; A ring gear portion having a second gear tooth provided along the inner surface of the bolt fastening housing portion; and It includes a leg rotation gear portion positioned at one end of the bolt fastening leg portion and having a third gear provided on its outer surface that rotates by engaging with a first gear tooth and a second gear tooth between the central rotation gear portion and the ring gear portion. The upper portions of the main rotating shaft and each leg rotating gear are coupled to the upper surface portion and arranged so that the upper surface portion and the bolt fastening housing portion rotate relative to each other with respect to the rotation of the central rotating gear portion, and The second gear tooth of the above ring gear part meshes with the third gear tooth of each of the above leg rotation gear parts to rotate each of the above leg rotation gear parts equally, and The above-mentioned leg portion for bolt fastening is, A first rotating leg portion connected to the above-mentioned leg rotating gear portion and a first universal joint; and It includes a second rotating leg connected to the first rotating leg and the second universal joint, and The above housing support is, A housing support rod member positioned upright on the lower surface of the above-mentioned bolt-fastening housing part, and A cover attachment part located at the end side of the above-mentioned housing support rod member and magnetically attached to the surface of the cover to be assembled, and An electromagnet part located within the above-mentioned cover attachment part and generating magnetic force by receiving electric power, and It includes an electromagnet control unit located within the above-mentioned cover attachment part and controlling the operation of the above-mentioned electromagnet part, The above electromagnet control unit includes an on/off switch unit for turning the operation of the electromagnet unit on/off, and The above-mentioned rod member for housing support is, A bolt fastening device for fastening a plurality of bolts, characterized by being adjustable in length, comprising a first support rod member and a second support rod member to which the first support rod member is movably coupled.
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5. In claim 1, The above second rotating leg part is, A tab coupling portion is provided on the other end side so that a bolt fastening tab can be detachably coupled thereto, and A third leg body member connected to the first rotating leg portion by the second universal joint; and A bolt fastening device for fastening a plurality of bolts, characterized by having a length-adjustable structure including a fourth leg body member that is inserted so as to be movable in the longitudinal direction of the third leg body member and is provided with a bolt fastening tab on the end side.
6. In claim 1, The above-mentioned first rotating leg part is, A first leg body member connected to the leg rotation gear portion via the first universal joint; and The structure has a length-adjustable structure including a second leg body member that is inserted so as to be movable in the longitudinal direction of the first leg body member and has a second rotatable leg member connected to a second universal joint at the end side. The first leg body member is provided with a first leg insertion part that is inserted so as to be movable in the longitudinal direction, and A first movement-guiding slit groove portion is positioned on either the inner surface of the first leg insertion portion or the outer surface of the second leg body member to guide the linear movement of the second leg body member in the longitudinal direction. A bolt fastening device for fastening a plurality of bolts, characterized in that on the other side between the inner surface of the first leg insertion part and the outer surface of the second leg body member, a first stopper projection is provided that is inserted into the first movement guide slit groove to guide the movement of the second leg body member and rotate the second leg body member integrally with the first leg body member.
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9. In claim 5, The above-mentioned third leg body member is provided with a second leg insertion part that is inserted so as to be movable in the longitudinal direction, and A second movement guiding slit groove portion is positioned on either the inner surface of the second leg insertion portion or the outer surface of the fourth leg body member to guide the linear movement of the fourth leg body member in the longitudinal direction. A bolt fastening device for fastening a plurality of bolts, characterized in that on the other side between the inner surface of the second leg insertion part and the outer surface of the fourth leg body member, a second stopper projection is provided that is inserted into the second movement guide slit groove part to guide the movement of the fourth leg body member and rotate the fourth leg body member integrally with the third leg body member.
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12. In claim 9, A bolt fastening device for fastening a plurality of bolts, characterized in that the electromagnet control unit includes a rechargeable unit that supplies electric power to the electromagnet unit, and the rechargeable unit has a charging terminal exposed to the outside of the cover attachment unit and is charged through the charging terminal.
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Description

Bolt fastening device that fastens multiple bolts The present invention relates to a bolt fastening device for fastening a plurality of bolts, and more specifically, to a bolt fastening device for fastening a plurality of bolts that can fasten a plurality of bolts simultaneously, thereby improving defects during the assembly of a cover used in a waterproof structure. Generally, a guided missile is an assembly composed of various integrated components, such as a propulsion system, airframe, guidance and control system, actuator, seeker, inertial navigation system, and warhead/fuse. In other words, a guided missile is a guided weapon capable of striking a target or target point by flying toward it and exploding upon arrival. Since the interior of the guided missile is equipped with various electronic devices, it has a waterproof structure that seals the interior with a cover using O-rings. In the guided missile, the waterproof structure of the cover involves placing an O-ring between the cover and the missile body and fastening the cover with multiple bolts; after fastening, the O-ring is compressed between the cover and the missile body, thereby waterproofing the interior of the missile body. In addition, not only for guided missiles but also for other waterproof structures using covers, an O-ring is placed between the body to which the cover is mounted and the cover, and the cover is assembled by fastening it with multiple bolts. The waterproof structure of the cover is fastened by sequentially tightening multiple bolts, but a problem frequently occurs where the O-ring slips out of the O-ring groove. In particular, when the cover is large or circular, the O-ring frequently slips out of the O-ring groove when multiple bolts are tightened in sequence. The waterproof structure of the cover frequently experienced defects where the O-ring would slip out of the O-ring groove when multiple bolts were tightened in sequence; when such defects occurred, they damaged internal electronic equipment, causing malfunctions and failures in devices such as guided missiles. In addition, when assembling the cover by fastening multiple bolts in sequence, there was a problem that the assembly process took a long time because each bolt had to be fastened individually. FIG. 1 is a perspective view illustrating an embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention. FIG. 2 is an enlarged perspective view illustrating an embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention. FIGS. 3 and 4 are perspective views illustrating a length adjustment structure of a leg portion for bolt fastening in a bolt fastening device for fastening a plurality of bolts according to the present invention. FIG. 5 is a side view illustrating an example of use in one embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention. FIG. 6 is a side view illustrating an example of use in another embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention. The present invention will be explained in more detail. Preferred embodiments of the present invention will be described in detail with reference to the attached drawings as follows. Prior to the detailed description of the present invention, terms and words used in the specification and claims described below should not be interpreted as being limited to their ordinary or dictionary meanings. Accordingly, the embodiments described in the specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. FIG. 1 is a perspective view illustrating an embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention, FIG. 2 is an enlarged perspective view illustrating an embodiment of a bolt fastening device for fastening a plurality of bolts according to the present invention, FIG. 3 and FIG. 4 are perspective views illustrating a length adjustment structure of a bolt fastening leg portion (100) in a bolt fastening device for fastening a plurality of bolts according to the present invention, FIG. 3 is a drawing illustrating a length adjustment structure of a first rotating leg portion (110), and FIG. 4 is a drawing illustrating a length adjustment structure of a second rotating leg portion (120). Referring to FIGS. 1 to 4, a bolt fastening device for fastening a plurality of bolts according to the present invention comprises a plurality of bolt fastening leg portions (100) having a bolt fastening tap (100a) that can be fitted into a tool insertion groove of a bolt head portion at the