CN110945203A

CN110945203A - Door device easy to disassemble and assemble

Info

Publication number: CN110945203A
Application number: CN201780091011.7A
Authority: CN
Inventors: 李祯祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-26
Filing date: 2017-05-26
Publication date: 2020-03-31
Anticipated expiration: 2037-05-26
Also published as: WO2018214136A1; CN110945203B

Abstract

A door assembly (11) includes a door frame (231) and a door (295) coupled to the door frame (231), a first pivot mechanism (337) mounted to the door (295) including a first pivot (353) removably coupled to a pivot aperture (253) of the door frame (231), and a second pivot mechanism (378) removably coupled to a seat (277) of the door frame (231) for driving the first pivot (353) to displace to a retracted position out of the pivot aperture (253) when the door (295) is in an open position, thereby allowing the door (295) to be quickly removed or installed. The addition of at least one tab (294) can be used to adjust the height of the door (295). The second pivot mechanism (378) may further include a second pivot (395) aligned with the first pivot (353) in a vertical direction and a bearing member (413) supporting the first pivot (353).

Description

Door device easy to disassemble and assemble

Technical Field

The present invention relates to a door device, and more particularly, to a device for quickly pivoting a door into a doorframe or quickly removing the door from the doorframe.

Background

A conventional door is pivotable between an open position for opening the passage opening and a closed position for closing the passage opening, and in order to support the door to be pivotable, two sets of hinge devices are generally provided between the door and the doorframe. This hinge device requires drilling holes at the correct positions of the door and the door frame due to the screw locking, however, such a work is not easy, and there is a possibility that the door cannot be pivoted to the closed position after being installed or the door is not smoothly operated due to the incorrect positions of the drilled holes. Furthermore, doors using such hinge assemblies are inconvenient and time consuming to install or remove (e.g., to replace or repair the door).

In addition, the hinge assembly for a general door is usually exposed between the door and the door frame, and thus, the door is easily corroded by water to cause an unsmooth operation, or the exposed hinge assembly may cause an unsmooth operation due to dust.

In addition, a commercially available folding door requires a rail and roller mechanism, and the rail and roller mechanism for the folding door is usually designed as a suspended folding door, in other words, the opening of the rail is usually narrower than the rail itself, so that the roller mechanism installed in the rail cannot be directly separated from the rail through the opening, and therefore, the commercially available folding door is disassembled from or installed inside the door frame, and the roller mechanism is disassembled or installed in addition to the two hinge devices, so that the commercially available folding door is inconvenient to disassemble or install.

Disclosure of Invention

To solve the problem that the door cannot be quickly disassembled, according to a first aspect of the present invention, there is provided an easily disassembled and assembled door apparatus, comprising: a door frame comprising a transverse frame mechanism and a pivoting side frame fixedly connected to one end of the transverse frame mechanism, wherein the transverse frame mechanism comprises a pivot hole, a door pivoted to the inner side of the door frame, the door comprises a pivoting edge adjacent to the pivoting side frame, the pivoting edge comprises a first end and a second end, the pivoting edge of the door further comprises a limiting groove, a first pivoting mechanism coupled to the first end of the pivoting edge of the door, the first pivoting mechanism comprises a first pivot biased in an extended position by a spring, the first pivoting mechanism further comprises a connecting pin movably coupled to the first pivot, and the connecting pin is accommodated in the limiting groove at an end located outside the first pivot, and the connecting pin is pushed to enable the first pivot to be displaced along the limiting groove between an extended position where the first pivot is detachably pivoted to the pivot hole of the transverse frame mechanism and a retracted position where the first pivot is disengaged from the pivot hole, and the bearing seat is fixed on the pivoting side frame of the door frame and is close to the second end of the pivoting edge, the bearing seat comprises a bearing part and a second pivoting mechanism combined with the second end of the pivoting edge of the door, the second pivoting mechanism comprises a second pivot which can be detachably combined with the bearing part of the bearing seat, and the second pivot is longitudinally arranged in a straight line with the first pivot.

The door being pivotally mounted to the inner side of the frame with the first pivot in the extended position and the second pivot engaged with the socket, the first and second pivot supporting the door pivotally relative to the frame between a closed position parallel to the transverse frame structure and an open position non-parallel to the transverse frame structure, the second pivot being disengaged from the socket with the first pivot in the retracted position, the door being further removable from the frame,

when the door is in the closed position, the limiting groove of the pivoting edge is shielded by the pivoting side frame, the connecting pin of the first pivoting mechanism cannot be used for pushing the first pivot to compress the spring from the extending position to move to the retracted position, and when the door is in the open position, the limiting groove of the pivoting edge is exposed, and the connecting pin of the first pivoting mechanism can be used for pushing the first pivot to compress the spring from the extending position to move to the retracted position.

In one embodiment, the pivoting edge of the door further comprises a pivoting frame coupled to the edge, the first end is formed by a top end of the pivoting frame, the second end is formed by a bottom end of the pivoting frame, the limiting groove is formed at a center of an end surface between two side surfaces of the pivoting frame and is close to the first end, the connecting pin further comprises a pushing hole, and an end surface of the connecting pin located outside the first pivot is substantially aligned with or retracted a small distance relative to an outer surface of the pivoting frame.

In one embodiment, the first pivot mechanism further includes: the door is pivotally fixed with a pivot seat in a mounting hole of the pivoting outer frame together with the door, the limiting groove is communicated with the mounting hole, the pivot seat further comprises a sliding hole, the first pivot further comprises a pivoting section which can be detachably pivoted with the pivoting hole of the transverse frame mechanism and a sleeving section, the first pivot further comprises an enlarged part formed between the pivoting section and the sleeving section, the first pivot is slidably sleeved with the sliding hole of the pivot seat, a part of the sleeving section of the first pivot is positioned at the outer side of the pivot seat, the connecting pin is combined at the sleeving section at the outer side position of the pivot seat, and the spring is accommodated in the sliding hole and biases the enlarged part of the first pivot.

In one embodiment the door further comprises: a pivoting plate, the pivoting edge being formed on the pivoting plate; and, a movable panel pivotally coupled to the pivotal panel, the movable panel including a closing edge spaced from the pivotal edge further comprising: the roller mechanism is arranged on the closing edge of the movable plate and further comprises a rotatable roller, the roller can be detachably accommodated in a track which is transversely extended in the transverse frame mechanism, the roller of the roller mechanism cannot be separated from the track of the transverse frame mechanism under the condition that the first pivot of the first pivoting mechanism is located at the extending position, and the roller of the roller mechanism can be separated from the track of the transverse frame mechanism under the condition that the first pivot of the first pivoting mechanism is located at the retracting position.

In one embodiment, the transverse frame mechanism includes an opening in communication with the track, the opening having a vertical width greater than or equal to a maximum vertical width of the track, and the roller having a maximum width slightly less than a minimum width of the opening of the track.

In one embodiment, the roller of the roller mechanism further comprises a groove formed on an outer circumferential surface in a ring shape, and a sleeve ring made of soft material and mounted on the groove, the outer circumferential surface of the roller is between an outer annular surface of the sleeve ring and an inner annular surface of the groove along a radial direction of the roller, and the outer annular surface of the sleeve ring is slightly smaller than the track.

The door apparatus easy to disassemble and assemble in one embodiment further includes: a door closing positioning mechanism fixed on the pivoting plate, the door closing positioning mechanism further comprises a positioning piece biased by a spring, the positioning piece can be displaced between a first position capable of being clamped with the track of the transverse frame mechanism and a second position capable of being separated from the track of the transverse frame mechanism relative to the pivoting plate, under the condition that the door is positioned at the closing position, the positioning piece is positioned at the first position, the door is positioned at the closing position, and when the door pivots from the closing position to the opening position or from the opening position to the closing position, the positioning piece is extruded by the transverse frame mechanism to be displaced from the first position to the second position.

The door apparatus easy to disassemble and assemble in one embodiment further includes: at least one adjusting sheet in a sheet shape is selectively installed between the bearing part of the bearing seat and the second pivot, and the spacing distance between the door and the track is gradually reduced along with the increase of the number of the adjusting sheets.

In one embodiment, the second hinge mechanism further comprises: the bearing piece is accommodated in the accommodating space of the shaft sleeve, the abutting part of the second pivot is abutted against the bearing piece, the bearing piece supports the second pivot to pivot relative to the shaft sleeve, and the second pivot is longitudinally positioned between the bearing piece and the bearing seat.

In one embodiment the bearing member comprises: a housing received in the receiving space of the sleeve, the housing including a receiving chamber and a through hole extending from an upper end surface to the receiving chamber, the housing further including a positioning groove formed on an inner surface of the receiving chamber in a ring shape, a plurality of balls, a cover body which can be rollably accommodated in the accommodating chamber of the shell and is positioned in a ring-shaped arrangement around the periphery of the through hole, a positioning ring which is rotatably accommodated in the accommodating chamber of the shell and is embedded with the positioning groove to position the cover body, the second pivot further includes a locating segment extending from the abutment portion, the abutment portion of the second pivot abuts against the locating ring, the shaft sleeve comprises a through hole which corresponds to the through hole of the shell and is used for accommodating the positioning section, and the tail end of the positioning section is positioned on the outer side of the shaft sleeve and is embedded with a retaining ring, so that the second pivot cannot be separated from the second pivot and the bearing piece is positioned.

According to a second aspect of the present invention, a door assembly comprises a door frame including a track, a shoe secured to one side of the door frame, a door pivotally mounted to an inner side of the door frame, the door being pivotable relative to the door frame between an open position and a closed position, a first pivot mechanism coupled to the door and pivotally connected to the door frame, a second pivot mechanism coupled to the door and aligned with the first pivot mechanism, the second pivot mechanism being coupled to the shoe, the first and second pivot mechanisms supporting the door for pivoting between the open and closed positions, optionally at least one laminar tab, selectively mounted between the second pivot mechanism and the shoe, and a door-closing positioning mechanism pivotally secured to the door and including a spring biased positioning member displaceable relative to the door between a first position engaging the track and a second position clear of the track, the spring biases the locating piece in the first position, under the state that the door is located closed position, the locating piece is located the first position and with the track block, the door is located closed position, when the door from closed position to open position pivot or by open position to closed position pivot, the locating piece is pushed by the door frame and is moved to the second position from the first position, along with the increase of the quantity of selection installation trimmer gradually reduce the spacing distance between door and the track.

In one embodiment, the positioning member further includes an arc-shaped top surface, the top surface has a volume larger than that of the track of the doorframe, when the door is located at the closed position, a part of the top surface of the positioning member is embedded with the track of the doorframe, and when the door pivots from the open position to the closed position or from the closed position to the open position, the top surface of the doorframe pressing positioning member moves from the first position to the second position.

In one embodiment, the door closing positioning mechanism further comprises: a base fixed in the door, the base including a first sliding hole extending from one end but separated from the other end, and a second sliding hole extending from the other end to the first sliding hole and having an inner diameter smaller than that of the first sliding hole, a step formed at the junction of the first and second sliding holes, a bottom cover fixed on the base and closing the first sliding hole, and a sliding sleeve slidably received in the first and second sliding holes of the base, the sliding sleeve including a first portion corresponding to the first sliding hole and a second portion corresponding to the second sliding hole, the sliding sleeve further including a shoulder formed at the junction of the first and second portions, the second portion of the sliding sleeve movably engaged with the positioning member together, the spring received between the sliding sleeve and the bottom cover, the shoulder engaging the step and the positioning member to prevent the positioning member from disengaging from the base.

In one embodiment the door assembly further comprises a roller mechanism, the door further comprising: a pivotal board including a pivotal edge, the first and second pivotal mechanisms coupled to the pivotal edge of the pivotal board, a movable board pivotally coupled to the pivotal board, the movable board including a closing edge spaced from the pivotal edge, the door closing positioning mechanism mounted on the pivotal board and located adjacent to a pivotal connection of the pivotal board to the movable board, further comprising: and the roller mechanism is combined on the closing edge of the movable plate and comprises a rotatable roller which is movably accommodated in the track, and when the door pivots between the opening position and the closing position, the pivoting plate and the movable plate pivot relatively and the roller moves along the track.

A gate device according to a third aspect of the present invention includes: a door frame, including a track, a bearing seat fixed on one side of the door frame, a door pivoted on the inner side of the door frame, the door can be pivoted between an open position and a closed position relative to the door frame, a first pivoting mechanism combined with the door and pivoted with the door frame, a second pivoting mechanism combined with the door and including a shaft sleeve pivotally fixed on the door together with the door, the shaft sleeve includes a holding space, the second pivoting mechanism further includes a second pivot including a leaning part and a nesting section longitudinally spaced from the leaning part, the second pivot is rotatably held in the holding space of the shaft sleeve, the nesting section is positioned on the outer side of the shaft sleeve and can be combined with the bearing seat, the second pivoting mechanism further includes a bearing member held in the holding space of the shaft sleeve, the second pivot is longitudinally positioned between the bearing member and the bearing seat, the abutting part of the second pivot is abutted against the bearing piece, the bearing piece supports the second pivot to pivot relative to the shaft sleeve, and the first pivot mechanism and the second pivot mechanism support the door to pivot between a closing position and an opening position relative to the door frame.

In an embodiment the bearing member further comprises: a housing received in the receiving space of the sleeve, the housing including a receiving chamber and a through hole extending from an upper end surface to the receiving chamber, the housing further including an annular positioning groove formed on an inner surface of the receiving chamber, a plurality of balls rollably received in the receiving chamber of the housing and arranged annularly around the through hole, a cover rotatably received in the receiving chamber of the housing and each ball abutting against the cover, and a positioning ring rotatably received in the receiving chamber of the housing and engaged with the positioning groove to position the cover, the second pivot further including a positioning section extending from the abutting section and received in the through hole of the sleeve, the abutting section of the second pivot abutting against the positioning ring, the sleeve including a through hole corresponding to the through hole of the housing and receiving the positioning section, a distal end of the positioning section located outside the sleeve and engaged with a retaining ring, so that the second pivot shaft cannot be separated from the second pivot shaft and the bearing member is positioned.

In one embodiment the door arrangement further comprises: optionally, at least one tab of the sheet form is selectively mounted between the second pivot mechanism and the seat to progressively decrease the distance between the door and the track as the number of mounting tabs is selected.

In one embodiment, the socket further includes a receiving portion extending from the mounting portion, the receiving portion includes a receiving hole coupled to the receiving section of the second pivot, the at least one tab is selectively mounted in the receiving hole of the socket, and the receiving section of the second pivot abuts against the tab.

A bearing member for a hinge mechanism of a door apparatus according to a fourth aspect of the present invention comprises: the shell is accommodated in the accommodating space of the shaft sleeve and comprises an accommodating chamber and a through hole extending from the upper end face to the accommodating chamber, the shell further comprises an annular positioning groove formed in the inner surface of the accommodating chamber, a plurality of balls which are accommodated in the accommodating chamber of the shell in a rolling manner and are arranged annularly around the through hole, a cover body which is rotatably accommodated in the accommodating chamber of the shell and is abutted against the cover body by the balls, and a positioning ring which is rotatably accommodated in the accommodating chamber of the shell and is embedded with the positioning groove to position the cover body, and the positioning ring is suitable for providing an abutting part included by a second pivot to abut against and support the second pivot to rotate.

The present invention will become more apparent from the detailed description of illustrative embodiments thereof given in conjunction with the accompanying drawings.

Drawings

Fig. 1 is an exploded perspective view of a door apparatus of the present invention, which is easily disassembled.

Fig. 2 is an exploded perspective view of a first pivoting mechanism of the door apparatus of fig. 1.

Fig. 3 is an exploded perspective view of a second pivoting mechanism of the door apparatus of fig. 1.

Fig. 4 is an exploded perspective view of a roller mechanism of the door apparatus of fig. 1.

Fig. 5 is an exploded perspective view of the door closing positioner mechanism of the door device of fig. 1.

Fig. 6 is a perspective view of the gate device of fig. 1.

Fig. 7 is a front view of fig. 1.

Fig. 8 is a cross-sectional view taken along line 8-8 of fig. 6.

Figure 9 is a cross-sectional view taken along line 9-9 of figure 7 with the positioning member of the door closing positioning mechanism in the first position.

Figure 9A is similar to figure 9 with the door closing positioning mechanism displaced to a second position.

Fig. 10 is a cross-sectional view taken along line 10-10 of fig. 7.

Fig. 11 is a cross-sectional view taken along line 11-11 of fig. 7.

Fig. 12 is a cross-sectional view taken along line 12-12 of fig. 6.

Fig. 12A is a view similar to fig. 12 and showing the addition of two tabs between the second pivot mechanism and the shoe.

Fig. 13 is a perspective view showing the door of the door apparatus at an open position.

Fig. 13A is another angular perspective view showing the door of the door apparatus in an open position.

FIG. 14 is a view similar to FIG. 11 and showing the first pivot shaft in a retracted position.

FIG. 15 is a sectional view similar to FIG. 12 and showing the door tilted to be separated from the doorframe.

FIG. 16 is a view similar to FIG. 13 and showing the door tilted to be separated from the doorframe.

Detailed Description

The drawings are only for purposes of illustrating the general teachings, and the extension of the number, location, relationship, and dimensions of the elements making up the illustrative embodiments will be described or become apparent to those of ordinary skill in the art upon reading and understanding the following description. It is also within the skill of the art to modify the exact dimensions and dimensional proportions to conform to specific force, weight, strength, and similar requirements after the following description has been read and understood.

The same reference numbers in different drawings identify the same or similar elements; it should also be appreciated that terms such as "first," "second," "lower," "upper," "top," "bottom," "side," "end high," "portion," "section," "horizontal," "spaced," "vertical," "width," "height," and the like, may be used solely to facilitate a viewer's reference to the configuration of the figures and to aid in describing illustrative embodiments.

The drawings show door apparatus of the embodiment of the present invention, and the door apparatus is designated as 11, the door apparatus 11 of the present invention includes a door frame 231, the door frame 231 includes a lateral frame mechanism 233, the door frame 231 further includes a pivoting side frame 257 secured to one end of the lateral frame mechanism 233 and a closing side frame 275 secured to the other end of the lateral frame mechanism 233 and spaced apart from the pivoting side frame 257 in a lateral direction parallel to the lateral frame mechanism 233 (as shown in fig. 1 and 6), the pivoting side frame 257 and the closing side frame 275 extend in a longitudinal direction perpendicular to the lateral direction, the lateral frame mechanism 233 includes a rail frame 235 and a pivoting seat 251 coupled to the rail frame 235, the rail frame 235 includes a rail 237 extending in the lateral direction and an opening 239 communicating with the rail 237, a width of the opening 239 in the lateral direction and the longitudinal direction is greater than or equal to a maximum width of the rail 237 in the width direction (as shown in fig. 1, b, 4) fixed in the track 237 and near the pivoting side frame 257, the pivoting seat 251 further includes a pivoting hole 253 formed by a circular hole.

The pivoting side frame 257 includes an upper end 259 and a lower end 271 spaced apart from the upper end 259 in a longitudinal direction perpendicular to the transverse direction, the pivoting side frame 257 further includes a receiving groove 273 extending from the upper end 259 to the lower end 271 in the longitudinal direction, and the upper end 259 of the pivoting side frame 257 is coupled to the rail frame 235.

The doorframe 231 further comprises a retainer 277 fixed to a lower end 271 of the pivoting-side frame 257, wherein the retainer 277 comprises a mounting portion 279 and a receiving portion 291 laterally extending from the retainer 277, the receiving portion 291 comprises a receiving hole 293, and the receiving hole 293 has a non-circular cross-sectional shape. The mounting portion 279 is disposed in the receiving cavity 273 of the pivoting side frame 257 and fixed by a plurality of screws, and the receiving portion 291 is located outside the pivoting side frame 257 and between the pivoting side frame 257 and the closing side frame 275 (as shown in fig. 6 and 7).

The door apparatus 11 further comprises a door 295 pivotally mounted on the inner side of the door frame 231, the door 295 including a pivoting edge 299 adjacent to the pivoting side frame 257 and a closing edge 336 laterally spaced from the pivoting edge 299 (as shown in fig. 1), the pivoting edge 299 including a pivoting frame 313, the closing edge 336 including a closing frame 338, the pivoting frame 313 including a first end 315 and a second end 317 longitudinally spaced from the first end 315, the pivoting frame 313 further including a mounting hole 331 longitudinally extending from the first end 315 to the second end 317, the pivoting frame 313 further including a retaining groove 319 extending from an outer surface of the pivoting frame 313 to the mounting hole 331, the pivoting frame 313 including two side surfaces 313A spaced apart from each other in a width direction and an end surface 313B (shown as a semi-circular end surface) between the two side surfaces 313A, a catching groove 319 is formed at the center of the end surface 313B and near the first end 315, in other words, the catching groove 319 has the same width as the two side surfaces 313A, and the closure outer frame 338 includes one installation space 340 extending in the longitudinal direction.

The door 295 further includes a pivoting panel 297, the pivoting panel 297 includes a first inner end 311 and a receiving chamber 297A formed at a top end of the pivoting panel 297, the pivoting edge 299 and the pivoting frame 313 are located on the pivoting panel 297 and are laterally spaced from the first inner end 311, the door 295 further includes a moving plate 333 pivotally connected to the pivoting panel 297, the moving plate 333 includes a second inner end 335, the closing edge 336 and the closing frame 338 are located on the moving plate 333 and are laterally spaced from the second inner end 335, that is, the first inner end 311 of the pivoting panel 297 is located between the pivoting edge 299 and the second inner end 335, and the second inner end 335 of the moving plate 333 is located between the first inner end 311 and the closing edge 336.

The door 295 further includes a hinge mechanism 14 (shown in fig. 1) pivotally connecting the pivoting plate 297 and the moving plate 333, the hinge mechanism 14 includes a first frame 173 coupled to the second inner end 335 of the moving plate 333 and a second frame 176 coupled to the first inner end 311 of the pivoting plate 297, the hinge mechanism 14 further includes a pivoting frame 168 pivotally connected to both the first and

second frames

173, 176, such that the hinge mechanism 14 supports the pivoting plate 297 to pivot relative to the moving plate 333 (shown in fig. 6 and 13).

The door apparatus 11 further includes a door lock 12 mounted on the moving plate 333, the door lock 12 includes a latch 68 and an operating knob 157 interlockingly engaged with the latch 68, and turning the operating knob 157 interlockingly displaces the latch 68 to a latched position (shown in fig. 7 and 8) engaged with the rail 237 of the rail frame 235 or to an unlatched position (shown in fig. 1, 13 and 16) disengaged from the rail 237.

Referring to fig. 1 and 2, the door apparatus 11 further includes a first pivot mechanism 337 coupled to the first end 315 of the pivot edge 299, the first pivot mechanism 337 including a pivot seat 339, the pivot seat 339 including a sliding hole 351, the first pivot mechanism 337 further including a first pivot 353 biased in an extended position (as shown in fig. 8 and 11) by a spring 377, the first pivot 353 including a pivot section 355 pivotally coupled to the pivot hole 253 of the transverse frame mechanism 233 and a socket section 357, the first pivot 353 further including an enlarged portion 359 formed between the pivot section 355 and the socket section 357, the socket section 357 including a fixing hole 371 coupled to a coupling pin 373, a portion of the coupling pin 373 being located outside the first pivot 353 and including a pushing hole 375 for providing a tool to detachably couple, the first pivot 353 slidably socket the sliding hole 351 of the pivot seat 339, a portion of the socket section 357 is located outside the pivot seat 339, the connecting pin 373 is located outside the pivot seat 339 (as shown in fig. 8 and 11), the spring 377 is received in the sliding hole 351 and biases the enlarged portion 359 of the first pivot 353 to bias the first pivot 353 in the extended position, and the pivot section 355 of the first pivot 353 is located outside the pivot seat 339 when the first pivot 353 is in the extended position.

The pivot seat 339 of the first pivot mechanism 337 is fixedly disposed in the mounting hole 331 of the pivot outer frame 313, the pivot section 355 of the first pivot 353 located at the extended position is located outside the pivot outer frame 313, the end of the connecting pin 373 located outside the first pivot 353 is received in the limiting groove 319, and an end surface of the end is flush with the outer surface of the pivot outer frame 313 or radially inwardly retracted by a small distance from the outer surface of the pivot outer frame 313. An elongated tool may be used in conjunction with the push hole 375 of the attachment pin 373, which elongated tool may pull the tool to push the first pivot 353 to compress the spring 377 to displace the first pivot 353 from the extended position to a retracted position (as shown in FIG. 14).

The door apparatus 11 also includes a second pivoting mechanism 378 coupled to the second end 317 of the pivoting frame 313 of the pivoting edge 299 of the door 295, the second pivoting mechanism 378 includes a bushing 379, the bushing 379 includes a receiving space 391 and a through hole 393 extending from a top end surface of the bushing 379 to the receiving space 391 and having an outer diameter smaller than the receiving space 391, the second pivoting mechanism 378 includes a second pivot 395 detachably coupled to the receiving portion 291 of the retainer 277, the second pivot 395 includes an abutting portion 411 and a fitting section 397 longitudinally spaced apart from the abutting portion 411, the second pivot 395 further includes a positioning section 399 extending from the abutting portion 411, and the fitting section 397 has the same cross-sectional shape as the fitting hole 293 of the retainer 277. The second pivot 395 is rotatably received in the receiving space 391 of the bushing 379, the engaging section 397 is located outside the bushing 379, and the end of the positioning section 399 passes through the through hole 393 of the bushing 379 and is located outside the bushing 379 and is engaged with a retaining ring, so that the second pivot 395 cannot be separated from the bushing 379 in the longitudinal direction.

The second pivot mechanism 378 further includes a bearing member 413 (preferably formed by a ball-and-socket bearing), the bearing member 413 includes a housing 415, the housing 415 includes a chamber 417 and a through hole 431 extending from an upper end surface of the housing 415 to the chamber 417 and aligned with the through hole 393 of the bushing 379, the housing 415 further includes a positioning groove 419 formed on an inner surface of the chamber 417 in a ring shape, the bearing member 413 further includes a plurality of balls 433, each ball 433 is rollably received in the chamber 417 of the housing 415 and surrounds an outer periphery of the through hole 431, the bearing member 413 further includes a cover 435 and a positioning ring 437, the cover 435 is rotatably received in the chamber 417 of the housing 415 and each ball 433 abuts against the cover 435, and the positioning ring 437 is rotatably received in the chamber 417 of the housing 415 and is engaged with the positioning groove 419 to position the cover 435.

The bearing member 413 is received in the receiving space 391 of the sleeve 379, the abutting portion 411 of the second pivot 395 abuts against the positioning ring 437, and the through hole 431 of the housing 415 provides a positioning section 399 of the second pivot 395 to pass through (as shown in fig. 12).

The shaft sleeve 379 of the second pivot mechanism 378 is received in the mounting hole 331 and located at the second end 317 of the pivot outer frame 313, such that the second pivot 395 is longitudinally aligned with the first pivot 353, and further the first and second pivot mechanisms 337, 378 support the door 295 to be pivoted at the inner side of the door frame 231, in detail, the pivot section 355 of the first pivot 353 of the first pivot mechanism 337 is detachably pivoted with the pivot hole 253 of the rail 237, the engaging section 397 of the second pivot 395 of the second pivot mechanism 378 is detachably engaged with the engaging hole 293 of the seat 277, and further the bottom end of the engaging section 397 of the second pivot 395 abuts against the bottom end of the engaging hole 293 of the seat 277, and further the second pivot 395 is limited by the seat 277 to be unable to rotate, the bottom end of the shaft sleeve 379 is longitudinally spaced from the receiving portion 291 of the seat 277 (as shown in fig. 12), so that the bearing piece 413 supports the shaft sleeve 379 to rotate relative to the second pivot 395, the pivoting plate 297 of the first and second pivoting mechanisms 337, 378 supporting the door 295 is thus pivotable between a closed position parallel to the lateral frame mechanism 233 (as shown in fig. 6 and 7) and a closed position non-parallel to the lateral frame mechanism 233 (as shown in fig. 13).

Referring to fig. 4, 8 and 10, the door apparatus 11 further includes a roller mechanism 439 coupled to the closing frame 338 of the closing edge 336 of the moving plate 333, the roller mechanism 439 includes a roller base 451 fixed to the installation space 340 of the closing frame 338, the roller base 451 includes a socket hole 453, the roller base 451 is received in the installation space 340 of the closing frame 338 and is locked by a plurality of screws, the roller mechanism 439 further includes a shaft 455 non-rotatably coupled to the socket hole 453, the shaft 455 includes a first section 457 coupled to the socket hole 453 and a second section 459, and the shaft 455 further includes a flange 471 formed between the first and

second sections

457, 459.

The roller mechanism 439 further comprises a roller 475 rotatably coupled to the second section 459 of the shaft 455, the roller 475 includes two grooves 479 formed in an annular shape on an outer peripheral surface of the roller 475 and two collars 491 made of a soft material mounted on each groove 479, the outer peripheral surface of the roller 475 is radially interposed between an outer annular surface of the collars 491 and an inner annular surface of the grooves 479 (as shown in fig. 10) along the roller 475, the roller 475 includes a chamber 477 accommodating a roller bearing 473 (e.g., a bearing), and the roller bearing 473 is rotatably disposed on the second section 459 of the shaft 455, and the roller bearing 473 abuts against the flange 471 so as to support the roller 475 to rotate relative to the shaft 455.

The roller 475 is movably received in the track 237 of the track frame 235, the outer circumferential surface of the collar 491 is slightly smaller than the track 237, so that the roller 475 rolls and linearly displaces along the track 237 of the track frame 235 when the door 295 pivots between the open and closed positions, further limiting the linear displacement of the closing edge 336 of the moving plate 333 of the door 295 only along the track 237 of the track frame 235, and the collars 491 made of soft material cause the roller 475 to roll silently and smoothly.

The door assembly 11 further includes a door closing positioning mechanism 492, the door closing positioning mechanism 492 including a base 493, the base 493 including a first end and a second end spaced apart from the first end, the base 493 including a first slide hole 495 extending longitudinally from the first end but spaced apart from the second end, the base 493 further including a second slide hole 497 extending longitudinally from the second end to the first slide hole 495 and having an inner diameter smaller than the first slide hole 495, an interface between the first and second slide holes 495,497 defining a step surface 499, the door closing positioning mechanism 492 further including a bottom cover 531, the bottom cover 531 being secured to the base 493 and closing the first slide hole 495, the door closing positioning mechanism 492 further including a sliding sleeve 511 slidably received within the first and second slide holes 495,497, the sliding sleeve 511 including a first portion 513 received within the first slide hole 495 and a second portion 515 received within the second slide hole 497, the sliding sleeve 511 further includes a shoulder 517 formed at the intersection of the first and

second portions

513, 515. the door-closing positioning mechanism 492 also includes a positioning member 533 movably engaged with the sliding sleeve 511, the positioning member 533 including an arcuate top surface 535.

The second portion 515 of the sliding sleeve 511 is engaged with the positioning member 533, and the positioning member 533 is located outside the base 493, and a spring 519 for biasing the sliding sleeve 511 is received between the sliding sleeve 511 and the bottom cover 531, and the shoulder 517 cooperates with the step surface 499 to prevent the positioning member 533 from being disengaged from the base 493.

The base 493 of the door-closing positioning mechanism 492 is received in the receiving compartment 297A of the pivotal plate 297, the positioning member 533 is located outside the pivotal plate 297, the positioning member 533 is displaceable relative to the pivotal plate 297 between a first position engageable with the track 237 and a second position disengageable from the track 237, and the spring 519 biases the sliding sleeve 511 to bias the positioning member 533 in the first position.

Assuming for convenience of description that the door 295 is in a closed position substantially parallel to the lateral frame mechanism 233, the pivoting plate 297 is aligned with the moving plate 333, the closing frame 338 abuts against the closing side frame 275 (as shown in fig. 6 and 7), and the positioning member 533 of the door closing positioning mechanism 492 is in the first position and engaged with the rail 237, in such a state that the door 295 can be maintained in the closed position even though the latch 68 is in the unlatched position. Referring to fig. 8, the keeper 533 of the door closing detent mechanism 492 is positioned in a first position to engage the track 237 and the latch 68 is positioned in a latched position such that the positioning of the door 295 in the closed position prevents the door 295 from being moved from the closed position to the open position.

The door 295 can be pushed to pivot from the closed position to the open position by using the operating button 157 to displace the latch 68 from the latched position to the unlatched position, during the pivoting of the door 295 from the closed position to the open position, the arc-shaped top surface 535 of the positioning member 533 of the door-closing positioning mechanism 492 is pressed by the track frame 235 to be displaced from the first position (shown in fig. 9) to the second position (shown in fig. 9A) separated from the track 237, the pivoting plate 297 and the moving plate 333 are further pivoted relatively, and the roller 475 of the roller mechanism 439 rolls along the track 237 of the track frame 235 until the door 295 is displaced to the open position, and the pivoting plate 297 and the moving plate 333 form an acute included angle in a state where the door 295 is located at the open position.

In a situation such as a building where the passage opening for installing the door frame 231 is relatively high, the distance between the door closing positioning mechanism 492 and the rail frame 235 is too large, which may cause the positioning member 533 to be unable to be engaged with the rail 237 even in the first position, in such a state, one or more thin tabs 294 may be selectively provided between the second pivot mechanism 378 and the seat 277, the volume of the at least one tab 294 is slightly smaller than the engaging hole 293 of the seat 277, the number of the tabs 294 is determined according to the distance between the positioning member 533 and the rail 237, as shown in fig. 12A, specifically, the required number of the tabs 294 is selected to be accommodated in the engaging hole 293 of the seat 277, so that the engaging section 397 of the second pivot 395 abuts against the tabs 294, which may cushion the second pivot mechanism 378, and the entire door 295, the first pivot mechanism 337, and the door closing positioning mechanism 492 are entirely abutted against the tabs 294, And the roller mechanism 439 are all elevated together, and the positioning member 533 of the door closing positioning mechanism 492 can approach the rail frame 235, so that the positioning member 533 is fitted to the rail 237 of the rail frame 235 when in the first position.

The pivot connection between the door 295 and the door frame 231 is mainly formed by the first pivot 353 and the pivot hole 253 of the lateral frame mechanism 233, so that the door 295 can be quickly detached from the door frame 231 as long as the first pivot 353 is separated from the pivot hole 253. In detail, referring to fig. 7, when the door 295 is in the closed position, the limit groove 319 of the pivoting outer frame 313 is shielded by the pivoting side frame 257 to prevent the connecting pin 373 from touching, so that the first pivot 353 of the first pivoting mechanism 337 cannot be moved from the extended position to the retracted position by a tool, and thus the door 295 cannot be easily disassembled when the door 295 is in the closed position, thereby further improving the overall anti-theft effect of the door device 11.

When the door 295 is in the open position shown in fig. 13 and 13A, the retaining groove 319 and the connecting pin 373 are exposed (not hidden by the pivotal side frame 257), so that the door 295 can be detachably coupled to the pushing hole 375 by using a tool, and further, the tool can be used to push the first pivot 353 to move from the extended position (shown in fig. 11) coupled to the pivot hole 253 to the retracted position (shown in fig. 14) out of the pivot hole 253, and further, the door 295 can be tilted along the track 237 (shown in fig. 15 and 16) to cause the roller 475 of the roller mechanism 439 and the positioning member 533 of the door-closing positioning mechanism 492 to disengage from the track 237, and finally, the door 295 can be lifted to separate the engaging section 397 of the second pivot 395 from the engaging hole 293 of the seat 277, so that the door 295 can be quickly separated from the door frame 231.

On the other hand, to pivot the separated door 295 to the door frame 231, the pivoting plate 297 and the moving plate 333 are pivoted at an acute angle and a tool is used to move the first pivot 353 to the retracted position, the door 295 is further tilted and the engaging end 397 of the second pivot 395 of the second pivoting mechanism 378 is engaged with the engaging hole 293 of the seat 277, the door 295 is centered with the first pivot 353 of the first pivoting mechanism 337 aligned with the pivot hole 253 of the track frame 235 and the roller 475 is received in the track 237 of the track frame 235, the positioning member 533 is further engaged with the track 237, and finally the first pivot 353 is released, the spring 377 biases the first pivot 353 to return to the extended position and the pivoting section 355 is engaged with the pivot hole 253 of the track frame 235, and the door 295 is pivoted inside the door frame 231 and can pivot between the open position and the closed position (as shown in fig. 6 and 13).

The first pivot 353 of the first pivoting mechanism 337 capable of moving between the extended position and the retracted position is detachably pivoted with the pivot hole 253 of the transverse frame mechanism 233 to cooperate with the second pivoting mechanism 378 to detachably couple with the seat 277, so as to achieve the effect of easily and rapidly detaching or mounting the door 295.

The retaining groove 319 of the pivoting frame 313 of the door 295 is located on the end surface between the two sides of the pivoting frame 313 (preferably in the center of the end surface 313B), so that when the door 295 is in the closed position, the retaining groove 319 is shielded by the pivoting side frame 257 and is exposed only when the door 295 is in the open position, and further, the door 295 can be detached from the door frame 231 by using a tool to couple the first pivot 353, thereby providing the advantages of good detachment of the door 295 but also the anti-theft effect, and the good detachment of the door 295 facilitates the maintenance, repair or replacement of the door 295.

In addition, since the stopper groove 319 is located on one end surface 313B between the two side surfaces 313A of the pivot frame 313 and is close to the first end 315, it is possible to allow the door apparatus 11 to be installed as a left-hand door or a right-hand door without replacing the pivot frame 313, which can reduce the cost of stocked parts for a manufacturer and the manufacturing cost.

The door closing positioning mechanism 492 provides positioning of the door 295 in the closed position even when the latch 68 is in the unlatched position when the door 295 is in the closed position, which improves the utility and convenience of the door assembly 11.

The second pivot mechanism 378 supports the weight of the door 295 with the bearing piece 413 by abutting the second pivot 395 against the bearing piece 413, so as to reduce the possibility of damage to the second pivot mechanism 378.

Furthermore, the second pivot 395 of the second pivot mechanism 378 is located between the bearing piece 413 and the receiving portion 291 of the bearing seat 277, and the bearing piece 413 is accommodated in the accommodating space 391 of the shaft sleeve 379, so that substances such as water or dust which may cause the bearing piece 413 to operate unsmoothly are not easy to reach the position of the bearing piece 413 from the accommodating space 391 of the shaft sleeve 379 upwards over the second pivot 395, thereby increasing the durability of the bearing piece 413.

The roller mechanism 439 is provided with two collars 491 made of soft material to help the roller 475 roll in the track 237, so that the rolling noise can be reduced and the roller 475 can roll more smoothly.

The adjustment tab 294 may be added between the second pivot mechanism 378 and the seat 277 according to the installation situation, so that the height of the door 295 can be quickly adjusted, the positioning member 533 of the door closing positioning mechanism 492 can be further positioned at the correct position, and the positioning member 533 can be engaged with the rail 237 in the state that the door 295 is positioned at the closed position, so that the adjustment tab 294 facilitates the quick installation and adjustment of the door 295.

While the basic teachings of the present invention have been described, numerous extensions and variations will be apparent to those of ordinary skill in the art. For example, the door 295 may be in the form of a single piece without a folding function, in which case the door 295 may not include the roller mechanism 439 and the door closing positioning mechanism 492. Alternatively, the engaging portion 397 of the second pivot 395 of the second pivoting mechanism 378 and the engaging hole 293 of the seat 277 can be circular, which does not adversely affect the operation of the second pivoting mechanism 378. In addition, the roller 475 may include only one groove 473 and one collar 491.

As the present invention disclosed in the specification may be embodied in other specific forms without departing from the spirit or general characteristics thereof, and it is noted that some of these specific forms have been set forth, the embodiments disclosed in the specification should be considered as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Claims

1. An easily detachable door apparatus comprising:

a door frame (231) including a lateral frame mechanism (233) extending in a lateral direction and a pivoting side frame (257) fixedly attached to an end of the lateral frame mechanism (233), wherein the lateral frame mechanism (233) includes a pivoting hole (253);

a door (295) pivotally mounted to the inner side of the door frame (231), the door (295) including a pivoting edge (299) adjacent the pivotally mounted jamb (257), the pivoting edge (299) including a first end (315) and a second end (317), the pivoting edge (299) further including a retaining groove (319);

a first pivoting mechanism (337) coupled to the first end (315) of the pivoting edge (299) of the door (295), the first pivoting mechanism (337) including a first pivot (353) biased in an extended position by a spring (337) and by the spring (337), the first pivoting mechanism (337) further including a link pin (373) movably coupled to the first pivot (353), and one end of the connecting pin (373) located outside the first pivot (353) is received in the limiting groove (319), the connecting pin (373) can push the first pivot (353) to move between an extended position and a retracted position along the limiting groove (319), when the first pivot (353) is positioned at the extending position, the first pivot (353) is detachably pivoted with the pivot hole (253) of the transverse frame mechanism (233), when the first pivot (353) is located at the disengagement position, the first pivot (353) is disengaged from the pivot hole (253);

a retainer (277) secured to the pivotally connected jamb (257) of the door frame (231) proximate the second end (317) of the pivotally connected edge (299), the retainer (277) including a receiving portion (291); and

a second pivoting mechanism (378) coupled to the second end (317) of the pivoting edge (299) of the door (295), the second pivoting mechanism (378) including a second pivot (395) detachably coupled to the receiving portion (291) of the retainer (277), the second pivot (395) being aligned with the first pivot (353) along a longitudinal direction perpendicular to the lateral direction;

the door (295) is pivotally mounted to the inner side of the door frame (231) with the first pivot (353) in the extended position and the second pivot (395) engaged with the seat (277), the first and second pivots (353, 395) supporting the door (295) for pivotal movement relative to the door frame (231) between a closed position in which the door (295) is parallel to the cross frame mechanism (233) and an open position in which the door (295) is non-parallel to the cross frame mechanism (233),

in a state where the first pivot 353 is located at the retracted position, the second pivot 395 is disengaged from the seat 277, and the door 295 is removed from the door frame 231,

when the door (295) is at the closing position, the limit groove (319) of the pivoting edge (299) is shielded by the pivoting side frame (257) and cannot use the connecting pin (373) to prevent the first pivot (353) from compressing the spring (377) from the extending position to move to the retracting position,

when the door (295) is in the open position, the retaining groove (319) and the connecting pin (373) are exposed, and the connecting pin (373) can be driven to move the first pivot (353) along the retaining groove (319) from the extended position to the retracted position.

2. The door apparatus for easy detachment according to claim 1, wherein the door (295) further includes a pivot-coupling housing (313) coupled to the pivot-coupling side (299), the first end (315) of the pivot-coupling side (299) is formed by a top end of the pivot-coupling housing (313), the second end (317) of the pivot-coupling side (299) is formed by a bottom end of the pivot-coupling housing (313), the pivot-coupling housing (313) includes two side surfaces (313A) spaced apart from each other in a width direction and an end surface (313B) between the two side surfaces (313A), the stopper groove (319) is formed at a center of the end surface (313B) and adjacent to the first end (315), the coupling pin (373) further includes a push hole (375), and the coupling pin (373) is located outside the first pivot (353) and is received in the stopper groove (319) at an end having an end surface substantially aligned in a lateral direction with respect to an outer surface of the pivot-coupling housing (313) or radially aligned from an outer surface of the pivot-coupling housing (313) Retracting a small distance inward.

3. The door apparatus of easy dismounting as claimed in claim 2, said first pivoting mechanism (337) further comprising:

a pivot seat (339) fixed in a mounting hole (331) included in the pivoting outer frame (313), wherein the seat (339) is pivoted with the outer frame (313), the limit groove (319) is communicated with the mounting hole (331), the pivot seat (339) further comprises a sliding hole (351), the first pivot (353) further comprises a pivot section (355) detachably pivoted with the pivot hole (253) of the transverse frame mechanism (233) and a sleeve section (357), the first pivot (353) further comprises an enlarged portion (359) formed between the pivot section (355) and the sleeve section (357), the first pivot (353) is slidably sleeved with the sliding hole (351) of the pivot seat (339), a part of the sleeve section (357) of the first pivot (353) is positioned at the outer side of the pivot seat (339) and is engaged with the connecting pin (373), the spring (377) is received in the slide hole (351) and biases the enlarged portion (359) of the first pivot (353).

4. The door apparatus for easy detachment and installation according to claim 1, further comprising a roller mechanism (439),

wherein the door (295) further comprises a pivoting panel (297) and a moving panel (333) pivotally connected to the pivoting panel (297), the pivoting edge (299) being formed on the pivoting panel (297), the moving panel (333) comprising a closing edge (336) spaced from the pivoting edge (299), the lateral frame mechanism (233) comprising a track (237) extending along the lateral direction, the roller mechanism (439) being mounted to the closing edge (336) of the moving panel (333) and comprising a rotatable roller (475), the roller (475) being releasably received within the track (237);

the roller (475) cannot be disengaged from the cross rail (237) in a state where the first pivot (353) is located at the extended position,

the roller (475) may be disengaged from the track (237) in a state where the first pivot (353) is in a retracted position.

5. The door apparatus of claim 4, wherein the lateral frame mechanism (233) includes an opening (239) communicating with the rail (237), the opening (239) having a width in a width direction perpendicular to the lateral and longitudinal directions, the width of the opening (239) being greater than or equal to the width of the rail (237), the outer side of the roller (475) being slightly smaller than the width of the opening (239) of the rail (237) in the width direction.

6. The door apparatus as claimed in claim 4, wherein the roller mechanism (439) comprises a groove (479) formed annularly on an outer circumferential surface of the roller (475) and a collar (491) made of a soft material mounted on the groove (479), the outer circumferential surface of the roller (475) being interposed radially between an outer circumferential surface of the collar (491) and an inner circumferential surface of the groove (479), the outer circumferential surface of the collar (491) being slightly smaller than the rail (237) in a lateral direction.

7. The door apparatus easy to detach according to claim 4, further comprising:

a door-closing positioning mechanism (492) fixed to the pivoting plate (297), the door-closing positioning mechanism (492) further comprising a positioning member (533) biased by a spring (519), the positioning member (533) being displaceable between a first position engageable with the track (237) and a second position disengageable from the track (237);

in a state where the door (295) is located at the closed position, the positioning member (533) is located at the first position, the door (295) is located at the closed position,

when the door (295) is pivoted from the closed position to the open position or from the open position to the closed position, the positioning member (533) is displaced from the first position to the second position by being pressed by the lateral frame mechanism (233).

8. The door apparatus easy to detach according to claim 7, further comprising:

at least one adjustment tab (294) selectively installed between the land (291) of the retainer (277) and the second pivot (395), the longitudinal separation distance between the door (295) and the rail (237) being gradually reduced as the number of the adjustment tabs (294) is selected.

9. The door apparatus of claim 1, wherein the second pivoting mechanism (378) further comprises:

a shaft sleeve (379) pivotally fixed to the pivoting edge (299) of the door (295) together with the door (295), the shaft sleeve (379) including a receiving space (391), said second pivot (395) including an abutting portion (411) and a engaging portion (397) longitudinally spaced from the abutting portion (411), the second pivot (395) being rotatably received in the receiving space (391) of the shaft sleeve (379) with the engaging portion (397) located outside the shaft sleeve (379) and detachably coupled to the receiving portion (291) of the retainer (277); and

and the bearing piece (413) is accommodated in the accommodating space (391), the abutting part (411) of the second pivot (395) abuts against the bearing piece (413), the bearing piece (413) supports the second pivot (395) to pivot relative to the shaft sleeve (379), and the second pivot (395) is positioned between the bearing piece (413) and the bearing seat (277).

10. Door apparatus easy to disassemble and assemble according to claim 9, wherein the bearing member (413) comprises:

a housing (415) received in the receiving space (391) of the boss (379), the housing (415) including a chamber (417) and a through hole (431) extending from an upper end surface to the chamber (417) of the housing (415), the housing (415) further including a positioning groove (419) formed annularly on an inner surface of the chamber (417);

a plurality of balls (433) rollably accommodated in the accommodation chamber (417) and surrounding the outer periphery of the through hole (431);

a cover (435) rotatably received in the chamber (417) of the housing (415) and each ball (433) abuts against the cover (435); and

a positioning ring (437) rotatably received in the housing (417) and engaged with the positioning groove (419) to position the cover (435), the second pivot (395) further comprising a positioning segment (399) extending from the abutting portion (411), the abutting portion (411) of the second pivot (395) abutting against the positioning ring (437), the bushing (379) comprising a through hole (393) corresponding to the through hole (431) of the housing (415), the positioning segment (399) extending through the through hole (393) of the bushing (379), the end of the positioning segment (399) being located outside the bushing (379) and engaged with a retaining ring such that the second pivot (395) cannot be separated from the bushing (379) and position the bearing member (37413).

11. A door apparatus, comprising:

a door frame (231) including a track (237) extending in a lateral direction;

a holder 277 fixed to one side of the door frame 231;

a door (295) pivotally mounted to the inside of the door frame (231) and pivotable between an open position and a closed position;

a first pivoting mechanism (337) coupled to the door (295) and pivotally connected to the door frame (231);

a second pivoting mechanism (378) coupled to the door (295) and aligned with the first pivoting mechanism (337) in a longitudinal direction perpendicular to the lateral direction, the second pivoting mechanism (378) coupled to the seat (277), the first and second pivoting mechanisms (337, 378) supporting the door (295) for pivoting between the open and closed positions;

optionally at least one tab (294) selectively mounted between the second pivot mechanism (378) and the seat (277), and

a door closing positioning mechanism (492) pivotally secured to the door (295) with the door (295), the door closing positioning mechanism (492) further including a positioning member (533) biased by a spring (519), the positioning member (533) being displaceable between a first position engaged with the track (237) and a second position disengaged from the track (237), the spring (519) biasing the positioning member (533) in the first position;

when the door (295) is at the closed position, the positioning member (533) is at the first position and engaged with the rail (237), and the door (295) is positioned at the closed position,

the positioning member (533) is displaced from the first position to the second position by being pressed by the door frame (231) when the door (295) is pivoted between the open position or the closed position,

the spacing distance between the door (295) and the track (237) in the longitudinal direction is gradually reduced as the number of mounting tabs (294) is selected to increase.

12. The door apparatus as claimed in claim 11, wherein the positioning member (533) further includes an arc-shaped top surface (535), and the top surface (535) has a volume larger than the rail (237) of the door frame (231);

when the door (295) is in the closed position, part of the top surface (535) of the positioning member (533) is fitted with the rail (237) of the door frame (231); and

the door frame (231) presses the top surface (355) of the positioning member (533) to move from a first position to a second position as the door (295) pivots between the open and closed positions.

13. The door apparatus of claim 11, wherein the door-closing positioning mechanism (492) further comprises:

a base (493) secured within the door (295) and including a first end and a second end, the base (493) including a first slide aperture (495) extending from the first end but spaced apart from the second end, and the base (493) further including a second slide aperture (497) extending from the first end to the first slide aperture (495) and having an inner diameter smaller than the first slide aperture (495), the intersection of the first and second slide apertures (495, 497) forming a step surface (499);

a bottom cover (531) fixed to the base (493) and closing the first sliding hole (495); and

a sliding sleeve (511) slidably received within the first and second sliding holes (495, 497) of the base (493), the sliding sleeve (511) including a first portion (513) received within the first sliding hole (495) and a second portion (515) received within the second sliding hole (497), the sliding sleeve (511) further including a shoulder (517) formed at an interface of the first and second portions (513, 515), the second portion (515) movably engaged with the positioning member (533), the spring (519) received between the sliding sleeve (511) and the bottom cover (531), the shoulder (517) engaging the step surface (499) to prevent the positioning member (533) from disengaging from the base (493).

14. The door apparatus of claim 11, further comprising: a roller mechanism (439),

wherein the door (295) further comprises a pivoting plate (297) and a moving plate (333) pivotally connected to the pivoting plate (297), the pivoting plate (297) comprising a pivoting edge (299), the first and second pivoting mechanisms (337, 378) being coupled to the pivoting edge (299), the moving plate (333) comprising a closing edge (336) spaced apart from the pivoting edge (299), the door closing positioning mechanism (492) being mounted to the pivoting plate (297) adjacent to the point where the pivoting plate (297) is pivotally connected to the moving plate (333);

the roller mechanism (439) is combined on the closing edge (336) of the moving plate (333), the roller mechanism (439) comprises a roller (475) movably accommodated in the track (237),

when the door (295) pivots between the open position and the closed position, the pivoting plate (297) pivots relative to the moving plate (333) and the roller (475) moves along the track (237).

15. A door apparatus, comprising:

a door frame (231) including a track (237) extending in a lateral direction;

a holder 277 fixed to one side of the door frame 231;

a door (295) pivotally mounted to the inside of the door frame (231), the door (295) being pivotable relative to the door frame (231) between an open position and a closed position;

a second pivoting mechanism (378) coupled to the door (295), the second pivoting mechanism (378) including a boss (379) pivotally secured to the door (295), the boss (379) including a receiving space (391), the second pivoting mechanism (378) further including a second pivot (395), the second pivot (395) including an abutting portion (411) and a engaging portion (397) spaced from the abutting portion (411) in a longitudinal direction perpendicular to the transverse direction, the second pivot (395) being rotatably received in the receiving space (391), the engaging portion (397) being located outside the boss (379) and engageable with the seat (277), the second pivoting mechanism (378) further including a bearing member (413) received in the receiving space (391) of the boss (379), the second pivot (395) being located between the bearing member (413) and the seat (277), the abutting part (411) of the second pivot (395) abuts against the bearing piece (413), the bearing piece (413) supports the second pivot (395) to pivot relative to the shaft sleeve (379), and the first pivoting mechanism (337) and the second pivoting mechanism (378) support the door (295) to pivot between a closed position and an open position relative to the door frame (231).

16. Door arrangement according to claim 15, wherein the bearing (413) further comprises:

a housing (415) received in the receiving space (391) of the boss (379), the housing (415) including a chamber (417) and a through hole (431) extending from an upper end surface of the housing (415) to the chamber (417), the housing (415) further including a positioning groove (419) formed annularly on an inner surface of the chamber (417);

a positioning ring (437) rotatably received in the housing (417) of the housing (415) and engaged with the positioning groove (419) to position the cover (435), the second pivot (395) further includes a positioning section (399) extending from the abutting portion (411), the abutting portion (411) of the second pivot (395) abuts against the positioning ring (437), the bushing (379) includes a through hole (393) corresponding to the through hole (431) of the housing (415), the positioning section (399) extends through the through hole (393) of the bushing (379), the positioning section (399) has an end located outside the bushing (379) and engaged with a retaining ring such that the second pivot (395) cannot be separated from the bearing member (413).

17. The door apparatus of claim 15, further comprising:

at least one tab (294) selectively mounted between the second pivot mechanism (378) and the seat (277), the longitudinally spaced distance between the door (295) and the track (237) being progressively reduced as the number of selectively mounted tabs (294) increases.

18. The door apparatus as claimed in claim 17, wherein the shoe (277) further comprises a receiver (291) extending from the mounting portion (279), the receiver (291) including a registration hole (293) for coupling with the registration section (397) of the second pivot (395), the at least one tab (294) being selectively mountable in the registration hole (293) of the shoe (277), the registration section (397) of the second pivot (395) abutting against the tab (294).

19. A bearing member for a pivoting mechanism of a door apparatus, comprising:

a housing (415) adapted to be mounted in a receiving space (391) included in a bushing (379), the receiving space (391) adapted to rotatably receive a positioning section (399) of a pivot (395), the housing (415) including a chamber (417) and a through hole (431) extending from an upper end surface of the housing (415) to the chamber (417), the positioning section (399) of the pivot (395) adapted to extend through a through hole (431) of the housing (415), (415) further including a positioning groove (419) formed in a surface of the chamber (417);

a plurality of balls (433) rollably accommodated in the accommodation chamber (417) of the housing (415) and surrounding the outer periphery of the through hole (431);

a cover (435) rotatably received in the chamber (417) and each ball (433) abuts against the cover (435); and

a positioning ring (437) rotatably received in the receptacle (417) and engaged with the positioning groove (419) to position the cover (435), the positioning ring (437) being configured to abut against and support the pivot (395) for rotation.