The buckle of the present invention is a buckle, of which engagement claw can be engaged with a serrate engagement groove of a band. The buckle includes: a buckle main body composed of a base plate and a roof frame, and two side plates connecting the base plate and the roof frame; and an operation piece being installed inside the roof frame, and having the engagement claw that can be engaged with the engagement groove of the band. The operation piece is movably supported by a connecting shaft connecting the two side plates in an intermediate point. The buckle main body is provided with a control piece for controlling a swing of the operation piece. The engagement claw is engaged with the engagement groove of the band, and the control piece functions as a spring for biasing the engagement claw toward the engagement groove side in such a locked state.

A buckle device includes a securing member, a frame, and at least one resilient member. The securing member is adapted to be fixedly mounted on a base. The frame includes a pivoting portion pivotally connected to the securing member to enable the frame to rotate relative to the securing member, a pair of side arms respectively connected to two opposite ends of the pivoting portion, and a forearm disposed oppositely to the pivoting portion and having opposite ends that are respectively connected to the side arms. The resilient member has a secured end portion that is secured at the securing member, and an abutting end portion in abutment with the frame for biasing the frame to rotate toward the base.

A buckle device includes a securing member, a frame, and at least one resilient member. The securing member is adapted to be fixedly mounted on a base. The frame includes a pivoting portion pivotally connected to the securing member to enable the frame to rotate relative to the securing member, a pair of side arms respectively connected to two opposite ends of the pivoting portion, and a forearm disposed oppositely to the pivoting portion and having opposite ends that are respectively connected to the side arms. The resilient member has a secured end portion that is secured at the securing member, and an abutting end portion in abutment with the frame for biasing the frame to rotate toward the base.

In a locking tongue (10) for a seat belt comprising an inserting portion (12) adapted to be inserted into a best buckle and a deflecting portion (14) for webbing (16), wherein the deflecting portion (14) includes a webbing passage (20) and a clamping element (22) for the webbing (16) and wherein the clamping element (22) is displaceable between a home position in which the webbing (16) is freely movable and a blocking position in which the clamping element (22) is displaced against a wall (36) of the webbing passage (20) so that the webbing (16) is clamped between the clamping element (22) and the wall (36) of the webbing passage (20), the clamping element (22) including a clamping surface (24) which in the blocking position clamps the webbing (16) against the wall (36) of the webbing passage (20), it is provided that the clamping element (22) is guided along a curved guide path (40) extending in the area of the blocking position substantially perpendicularly to the wall (36) so that in the blocking position the clamping element (22) is moved against the wall (36) substantially perpendicularly with the clamping surface (24). In accordance with the invention, furthermore a method of manufacturing said locking tongue (10) is provided comprising the following features of: providing a deflecting portion (14), positioning the clamping element (22) on the deflecting portion (4), and partly surrounding the deflecting portion (14) and the clamping element (22) by injection-molding, wherein the clamping element (22) is fixed to the deflecting portion (14).

In a locking tongue (10) for a seat belt comprising an inserting portion (12) adapted to be inserted into a best buckle and a deflecting portion (14) for webbing (16), wherein the deflecting portion (14) includes a webbing passage (20) and a clamping element (22) for the webbing (16) and wherein the clamping element (22) is displaceable between a home position in which the webbing (16) is freely movable and a blocking position in which the clamping element (22) is displaced against a wall (36) of the webbing passage (20) so that the webbing (16) is clamped between the clamping element (22) and the wall (36) of the webbing passage (20), the clamping element (22) including a clamping surface (24) which in the blocking position clamps the webbing (16) against the wall (36) of the webbing passage (20), it is provided that the clamping element (22) is guided along a curved guide path (40) extending in the area of the blocking position substantially perpendicularly to the wall (36) so that in the blocking position the clamping element (22) is moved against the wall (36) substantially perpendicularly with the clamping surface (24). In accordance with the invention, furthermore a method of manufacturing said locking tongue (10) is provided comprising the following features of: providing a deflecting portion (14), positioning the clamping element (22) on the deflecting portion (4), and partly surrounding the deflecting portion (14) and the clamping element (22) by injection-molding, wherein the clamping element (22) is fixed to the deflecting portion (14).

The Belt Ratcheting Device with Hidden Blade-IV (HB-IV) facilitates unidirectional belt fastening and fast release. The HB-IV includes a turning gate rotatably installed diagonally in a channel. The turning gate has been installed with a hidden blade which controls the belt's translation by engaging the lower belt surface to avoid visible scratches. The turning gate is connected to a lever. The HB-IV has two states: active and inactive. In the active state the device works as a belt ratchet by allowing the belt to be pulled forwards while restricting any belt motion backwards. In the inactive state the belt's motion is facilitated in both directions. The HB-IV states are manually controlled by the lever. After fastening, the belt remains fastened until released. The HB-IV can be adapted to any kind of smooth leather, cloth or synthetic belts. The blade's hidden position and smooth channel's surfaces minimize belt's wear and scratches.

The Belt Ratcheting Device with Hidden Blade-IV (HB-IV) facilitates unidirectional belt fastening and fast release. The HB-IV includes a turning gate rotatably installed diagonally in a channel. The turning gate has been installed with a hidden blade which controls the belt's translation by engaging the lower belt surface to avoid visible scratches. The turning gate is connected to a lever. The HB-IV has two states: active and inactive. In the active state the device works as a belt ratchet by allowing the belt to be pulled forwards while restricting any belt motion backwards. In the inactive state the belt's motion is facilitated in both directions. The HB-IV states are manually controlled by the lever. After fastening, the belt remains fastened until released. The HB-IV can be adapted to any kind of smooth leather, cloth or synthetic belts. The blade's hidden position and smooth channel's surfaces minimize belt's wear and scratches.

The present disclosure relates to an anti-jamming ratchet-type tensioning device, comprising a base, a winding and unwinding mechanism with a ratchet wheel, and an operating mechanism. The operating mechanism controls locking or unlocking via a lever element, with an elastic check claw provided at the executing end of the lever element to prevent reverse rotation of the ratchet wheel. The key feature lies in the design of the lever element's pivot point as a movable structure. When the ratchet wheel rotates clockwise and pushes the check claw, the lever element can move upward with the thrust to avoid obstruction, reducing frictional resistance, effectively preventing jamming, and ensuring smooth and effortless webbing extraction.

A bridge-adjustment fixing belt buckle is provided, aiming to improve difficulty of adjustment and unstable fixing. A first bridge, which is rotatable, is arranged in conjunction with a spring and a raised pawl to achieve quick and stable fixing and tightness adjustment of a belt. To avoid accidental touch, the bridge is arranged to drive the raised pawl to disengage from the belt, and automatic position restoration is achieved by the elastic force of the spring. Outside appearance change made with an auxiliary bridge may change the position of triggering the raised pawl to provide flexibility for expansion of mechanical design and also maintaining smooth feel of adjustment. Also, a combination of a main limiting frame, a decorative panel control, and a connecting seat can be used to achieve horizontal push type operation, and a more accurate and stable tightness adjustment is achieved in conjunction with the belt ratchet.

A bridge-adjustment fixing belt buckle is provided, aiming to improve difficulty of adjustment and unstable fixing. A first bridge, which is rotatable, is arranged in conjunction with a spring and a raised pawl to achieve quick and stable fixing and tightness adjustment of a belt. To avoid accidental touch, the bridge is arranged to drive the raised pawl to disengage from the belt, and automatic position restoration is achieved by the elastic force of the spring. Outside appearance change made with an auxiliary bridge may change the position of triggering the raised pawl to provide flexibility for expansion of mechanical design and also maintaining smooth feel of adjustment. Also, a combination of a main limiting frame, a decorative panel control, and a connecting seat can be used to achieve horizontal push type operation, and a more accurate and stable tightness adjustment is achieved in conjunction with the belt ratchet.