A belt connection structure of a wearable product is provided. A first transmission rack is provided on a side wall of a first elongate hole. A second transmission rack is provided on a side wall of a second elongate hole facing the first transmission rack. A gear is engaged with the first and second transmission racks respectively. A connecting member coaxial with the gear is provided on a side surface of the gear. A sleeve communicating with a slide way is provided on the outer side wall of an outer cover. The inner side wall of the sleeve is provided with teeth extending in the axial direction. At least two annular grooves are formed on the outer side wall of the sleeve. A belt button is mounted on the sleeve, and comprises a pressing portion and a connecting column. The pressing portion and the connecting column are slidable in the axial direction but are not rotatable relative to each other. Position limiting teeth are provided on the outer side surface of the connecting column. The circumferential surface of the connecting column is further provided with a snap-fit flange spaced from the connecting column. The snap-fit flange is engaged with an annular groove.

The invention comprises an assortment of apparatuses to magnetically tether a dental hygienist's hand to the utility tubes and hoses commonly found in a dental office. In a preferred embodiment, this consists of an adjustable silicone utility band containing a magnet which is worn by the hygienist. This tethers him or her to a utility hose or tube, which has a clasp that contains a reciprocal magnet. In other embodiments, the invention comprises rings or fingergrips which contain magnets that tether to the utility hose or tube via the magnetized clasp.

A tangless buckle system for straps for watches, fitness monitors, and other limb-worn devices. In such tangless buckle systems, a buckle with a tooth is provided. In contrast to a traditional buckle, the tooth and the buckle are fixed with respect to one another, i.e., the tooth does not rotate relative to the buckle. As this new buckle design does not include the rotating tang that extends all the way across the buckle loop in a traditional buckle design, the new design may be referred to as a tangless buckle. Such buckles may provide a simpler, yet highly secure, mechanism for securing such devices.

A magnetic band clasp includes a female clasp assembly of a first band segment and a male clasp assembly of a second band segment. The female clasp assembly defines one or more cavities with one or more magnetic elements disposed underneath. The male clasp assembly includes a projection that may include a magnetic element. Magnetic attraction between the magnetic elements couples the first and second band segments when the projection is positioned in the cavity. In implementations where the female clasp assembly includes multiple cavities, changing which of the cavities the projection is positioned in adjusts a combined coupled length of the first and second band segments.

A tool for securing an object, such as a cell phone, to a body part, such as a wrist, of a user. The assistive holder includes a strap having a sleeve and a channel located along the strap, wherein an external clip fastener can be positioned in either the sleeve or the channel. Fasteners on either end of the strap can be attached to one another, thereby forming a loop that can encircle a wrist. In operation, the user attaches an object to an upper surface of the external clip fastener, and then removably secures the object and external clip fastener to the sleeve or channel, per the user's desired orientation of the object.

Provided is a closure device for the releasable connecting of two parts to each other including a first closure part, having a first base body, at least two first engaging sections formed on the first base body, spaced apart from each other along a loading direction and forming between them a gap, and at least one first magnetic section arranged on the first base body, and a second closure part, having a second base body, at least one second engaging section formed on the second base body, and at least one second magnetic section arranged on the second base body.

A jewelry clasp includes a lower arm and an upper arm that are hingedly joined to each other at one respective ends thereof. A locking pin is provided adjacent a second end of the upper arm and the locking pin extends toward the respective second end of the lower arm and locked inside a locking receptacle formed adjacent a second distal end of the lower arm. The locking receptacle contains two spring wires that extend transversely to the direction of the locking receptacle, the spring wires being spaced from each other at a distance slightly smaller than the diametrical size of a pin head of the locking pin. The clasp can be used as a general jewelry closure device.

A jewelry securement device may include a band having a first end and a second end. A female retainer may be coupled to the first end, and a male retainer may be coupled to the second end of the band. The female retainer may comprise an aperture. The male retainer may comprise a shape that is complementary to the shape of the aperture, and portions of the male retainer may be inserted into the aperture of the female retainer to position the first end and second end proximate to each other. Preferably, the band may be movable between a closed position in which portions of the male retainer are inserted into the aperture of the female retainer, and an open position in which portions of the male retainer are separated from the aperture of the female retainer.

An attachment strap for a wearable electronic device is disclosed. The attachment strap attaches the wearable electronic device to a wearer, and may attach to a wrist of a wearer. The attachment strap includes two bands which attach to a clasp. The clasp operates in an open and closed configuration. When in the closed configuration, the clasp may not present a visible indication of its mechanism.

Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.