A frame structure includes a frame body, a corner connector and roller mechanism arranged in a splice of adjacent side frames at a bottom of the frame body, and a guide mechanism clamped to a top of the frame body. A glass positioning slot is disposed on a first side of an inner side wall of a side frame of the frame body. A mounting slot is disposed on a first side of an outer side wall of the side frame of the frame body and used for fixing the guide mechanism or the corner connector and roller mechanism. The glass positioning slot is adjacent to the mounting slot along a lengthwise direction of the first side of the inner side wall. A sliding door is further provided.

A balance shoe for a block and tackle window balance system includes an enlarged head portion housing a locking system configured to receive at least a portion of a pivot bar and releasably engage a jamb track. An elongate tail portion configured to couple at least partially within a U-shaped channel of the window balance system. A front face, the front face of the elongate tail portion being adjacent to a base wall of the U-shaped channel when the elongate tail portion is coupled therein. The front face including an elongate channel configured to allow passage of the pivot bar from the elongate tail portion towards the locking system. The balance shoe also including at least one protrusion extending from the front face of the elongate tail portion and disposed at least partially within the elongate channel.

A window regulator may include a first guide rail assembly, that may be coupled to the door panel and including a first guide rail, a first pulley and a second pulley. The first slider may be configured to receive the window pane and translate along the first guide rail to move the window pane between an open position and a closed position. The first cable may be coupled to a drive and engaged with the first pulley and may be fixed to the first slider such that actuation of the drive moves the first slider and the window pane into the opening. The spring may be disposed between an end of the first cable and a portion of the first slider. The spring may be configured to bias the slider and an edge of the window pane towards the A-side beam or the B-side beam.

Provided is a vehicle front structure capable of, without breaking a lid provided at a thermal insulating cover, reliably closing a bonnet and the lid even if an attempt is made to close the bonnet prior to closing the lid. In the present invention, a thermal insulating cover 10 including a lid 30 that covers the upper side of an engine in an openable and closable manner is provided below a bonnet 1 that covers the upper side of an engine room in an openable and closable manner; the lid 30 is provided with, in the vehicle front-rear direction, a hinge fulcrum 36 on the same rear end side as a hinge fulcrum 4 of the bonnet 1 and is openable and closable independently of the bonnet 1; and the lid 30 includes locking means 40 that is locked to the bonnet 1 when the lid 30 is open and is released from the locking in conjunction with a closing operation of the bonnet 1.

The disclosure relates to a sliding fenestration system assembly, such as a door or window system. The sliding fenestration system includes a sill having a first track channel and a second track channel formed thereon. A sill track including a first track segment, a second track segment, and a third track segment is coupled to the sill such that the first track segment is positioned within the first track channel, the third track segment is positioned within the second track channel, and the second track segment extends between the first and second track channels. The system further includes a sliding panel having one or more bottom guide assemblies, the assemblies engaging the sill track and operable to accommodate movement of the sliding panel along the sill track to reduce friction at a sealing interface between the sliding panel and the fenestration frame assembly.

An inverted constant force window balance system has a carrier assembly including a housing with a first and a second housing wall, a coil spring with a free end, and a shoe assembly slidably coupled to the housing. The shoe assembly includes a first and a second shoe face. The housing slides between a first and a second position relative to the shoe assembly. When in the first position, the first and second housing walls are substantially non-coplanar with the first shoe face, and when in the second position, the first housing wall is substantially coplanar with the first shoe face and substantially non-coplanar with the second shoe face. The shoe assembly receives a pivot bar from a window sash and extends a brake upon rotation thereof. The balance system also includes a mounting bracket releasably coupled to the housing and coupled to the free end of the coil spring.

In example implementations, a track of a vertically stacking door is provided. The track includes a vertical track, a track coupling coupled to the vertical track, a first curved track portion coupled to the track coupling, a second curved track portion coupled to the track coupling, and a ramp coupled to the vertical track before the track coupling.

A vertical door system includes a safety brake that is engaged when the vertical door system fails. The safety brake includes a panel with a slanted channel and a pin slidably disposed in the slanted channel. The panel may be coupled to a counterweight that keeps the pin from engaging with stops in a track when the safety brake is disengaged. When the panel is uncoupled from the counterweight, the safety brake engages and the pin may slide in the channel to allow contact between a portion of the pin and one of the stops in the track to inhibit movement of a door.

A vertical door system includes a safety brake that is engaged when the vertical door system fails. The safety brake includes a panel with a slanted channel and a pin slidably disposed in the slanted channel. The panel may be coupled to a counterweight that keeps the pin from engaging with stops in a track when the safety brake is disengaged. When the panel is uncoupled from the counterweight, the safety brake engages and the pin may slide in the channel to allow contact between a portion of the pin and one of the stops in the track to inhibit movement of a door.

A counterbalance system for balancing an overhead door installed against a structure of a vehicle or a house, the door having at least one door panel, the system has a longitude pipe with non-circular section cut; a pair of U-brackets having two side walls with one center hole on each side; a pair of torsion spring assemblies received within the pipe, and the inboard end of the assembly being slidingly engaged within the pipe; a pair of connecting shaft, with inboard side connected with the outboard end of each of the spring assemblies; the shaft passing through the center holes of the U-bracket; the outboard end of each shaft being fixed with the side wall on the outboard end of each of the U-brackets; a pair of drums each having a center hole received by the shaft, and each of the drums located between two side walls of the U-bracket.