Abstract: The present disclosure relates to a pin lock device allowing detachable attachment of an anti-moisture film or a shield protective film to a surface of a shield secured to a helmet main body in an openable/closable manner and a helmet including same.

Abstract: The present invention relates to a shield mounting device for a helmet shield in which a helmet shield can be easily assembled and disassembled to/from a helmet body. The shield mounting device for a helmet comprises a mounting protrusion having a flange at an edge thereof; a mounting plate having an arc shaped groove capable of guiding an operation that the flange is inserted and rotated; a base plate having an elastic piece elastically moving in a direction that an external force is applied when the external force is applied to the mounting protrusion; and a locker having an escape prevention for preventing an escape of the mounting protrusion.

Abstract: The present invention relates to a shield mounting device for a helmet shield in which a helmet shield can be easily assembled and disassembled to/from a helmet body. The shield mounting device for a helmet comprises a mounting protrusion having a flange at an edge thereof; a mounting plate having an arc shaped groove capable of guiding an operation that the flange is inserted and rotated; a base plate having an elastic piece elastically moving in a direction that an external force is applied when the external force is applied to the mounting protrusion; and a locker having an escape prevention for preventing an escape of the mounting protrusion.

Abstract: The present invention relates to a helmet having an opening type chin protection bar, which includes a helmet body having a face protection opening in a front side, a chin protection bar designed to protect a user's chin by blocking a part of the opening of the helmet body, a shield for shielding the remaining portions of the opening on an upper side of the chin protection bar, a hinge mechanism engaged to be rotatable in the upper and lower directions by engaging the chin protection bar to the left and right sides of the helmet body, and a locking mechanism designed to rotate the chin protection bar in the upper and lower directions with respect to the hinge bolt of the hinge mechanism as a shaft wherein the chin protection bar is locked in a lowered state, and is unlocked for its lifting operation.

Abstract: A rotatable coupling structure for a shield and visor of a helmet includes a rotation shaft unit installed at both sides of the helmet body. The shield includes a rotary shaft inserted into a shaft hole in a circular rotation plate member through insertion guide portions at both ends. The visor includes a respective rotary shaft inserted into a shaft hole in the circular rotation plate member. The shield is coupled to the shaft hole of the respective rotary shaft and is rotatable upward and downward at multiple stage stop points, and the visor is assembled to the shaft of the rotary shaft and is fixed at a fixed position without an upward and downward rotation.

Abstract: A rotatable coupling structure for a shield and visor of a helmet includes a rotation shaft unit installed at both sides of the helmet body. The shield includes a rotary shaft inserted into a shaft hole in a circular rotation plate member through insertion guide portions at both ends. The visor includes a respective rotary shaft inserted into a shaft hole in the circular rotation plate member. The shield is coupled to the shaft hole of the respective rotary shaft and is rotatable upward and downward at multiple stage stop points, and the visor is assembled to the shaft of the rotary shaft and is fixed at a fixed position without an upward and downward rotation.

Abstract: A coupling apparatus for a helmet shield includes a helmet and a shield that includes a left and right protruded inner portion, a curved rim protrusion, a cam shaped shaft portion having an engaging shaft flange at both sides of the rim protrusion and a guide pin shaft. A coupling apparatus includes a movable shaft member, base member and movable shaft member spring that is assembled to the back surface of the base member. The movable shaft member spring includes one end engaged to a spring engaging ring of the movable shaft member and the other end supported by the base member for thereby returning the movable shaft member, wherein the cam shaped shaft portion of the shield is rotatable in the movable shaft member, and the movable shaft member is slide-movable in the concave portion of the base member in a forward and backward direction.

Abstract: A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Abstract: The present invention relates to a band buckle which is capable of fabricating a buckle based on a set formed of an upper ring and a lower ring, quickly releasing a bound force of an adjusting band by easily lifting only the upper ring when the adjusting band is inserted, and implementing an easier fabrication of a buckle and decreasing the fabrication cost of the same by forming a support portion in a rear end inner side surface of the lowering without forming the support portion in the upper ring.

Abstract: A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Abstract: A display device includes a front case; a cathode ray tube mounted on the front case; a main circuit board mounted on the rear side of the cathode ray tube; a circuit board frame, mounted to one among the front case and the cathode ray tube, to support the circuit board; a nonflammable and fire-retardant shield case to contain a fire that may break out in the interior of the display device, while providing a shielding effect which minimizes the radiation of electromagnetic waves generated by the display device and protects the display device from external electromagnetic interference; and a rear case that is combined with the front case to encase the interior of the display device. A top surface of the shield case includes an anode cap shield which protrudes upwardly from the surface to a fixed height to form openings on either side of an anode cap shield.

Abstract: A brake driving apparatus of a tape recorder includes a reel braking part for driving brakes with a force transferred from a capstan motor to stop the rotation of reels, and a reel releasing part for releasing the brake of the reels by being slidably driven and down with a force transmitted from a loading motor.

Abstract: A tension controller of a tape recorder maintains a constant tension in a running tape in the tape recorder. One embodiment includes a friction element for generating frictional force on one side of a tape reel disk, a tension controller for controlling the tension of the tape in which the tension controller is resiliently contacted by means of a spring in an upper face of the friction element, a slant cam formed at the edge of the contacted surface, and a tension pole formed in the upper direction on one side of a tension arm. A lifter minimizes the frictional action on the tape by being connected to a moving lever formed on the lower side of the tension controller and raising the tension during controller high-speed searching. Automatic control of the infinitesimal tension of the tape and prevention of interference in the tape during high-speed searching may be attained.

Abstract: A cassette loading device for use in the tape recorder of which a door and a receiving holder is opened and closed by levers against a deck, wherein a slider of a cassette interposed between the receiving holder and the door is slidingly opened and closed by an opening and closing function of the door thereby enabling the height of the door and the receiving holder to be changeably positioned mutually with in opening and closing of the door and the receiving holder. The middle portion of the door is connected with the lower part of the deck by a third pair of lever members supported by a pair of pins; the door is connected with each lever member of the third pair of lever members supported by a pair of hinge members mounted on the lower ends of the receiving means.