CN220469752U - Extension piece for roll-over door and roll-over door - Google Patents

Abstract

The utility model discloses an extension piece for a roll-over door and the roll-over door; the movable connecting rod comprises a hinge part and a containing part, wherein the hinge part is used for connecting a first connecting rod of a connecting rod mechanism in the roll-over door, the second end of the movable connecting rod of the connecting rod structure is arranged in the containing part in a penetrating way, the first connecting rod moves, and the movable connecting rod can move in the containing part in a matching way. In the utility model, one end of the movable connecting rod is hinged, and the other end of the movable connecting rod is connected with the connecting rod of the connecting rod mechanism through the extending piece, when the connecting rod mechanism moves, the end, connected with the extending piece, of the movable connecting rod can move in the extending piece, so that the movement of the connecting rod mechanism is matched, the abrasion of the movable connecting rod is avoided, and the service life of the movable connecting rod is prolonged. The movable connecting rod can play a good reinforcing effect for a long time.

Description

Extension piece for roll-over door and roll-over door

Technical Field

The utility model relates to the technical field of roll-over doors, in particular to an extension piece for a roll-over door and the roll-over door.

Background

The roll-over door is an entrance control device for a parking lot system in a residential district, office building, apartment, villa, commercial building, or the like. The existing roll-over door is mechanized and automatic in opening and closing, and is safe and reliable in operation. The opening and closing of the roll-over door realizes motor driving, thereby greatly reducing the passing efficiency of the roll-over door and ensuring that the roll-over door is safer and more reliable.

The roll-over door generally comprises a case and a door row, wherein the case and the door row are connected through a connecting rod mechanism, a movable connecting rod is arranged in the middle of the connecting rod mechanism for improving the structural strength of the connecting rod mechanism, and when the connecting rod mechanism moves, the movable connecting rod is required to be matched for expansion and contraction so as to match the movement of the connecting rod mechanism. In the prior art, long strip holes are usually formed in one end or two ends of the movable connecting rod, bolts are arranged at the long strip holes to fix the movable connecting rod, and the movable connecting rod can relatively extend and shrink to match with the movement of the connecting rod mechanism, however, the movable connecting rod is easy to wear due to the mode, and the movable connecting rod cannot play a good reinforcing effect after long-time use.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the roll-over door, which solves the problems that a movable connecting rod is easy to wear and can not achieve a good reinforcing effect after long-time use.

In order to solve the technical problems, the utility model adopts a technical scheme that the turnover door comprises a hinge part and a containing part, wherein the hinge part is used for connecting a first connecting rod of a connecting rod mechanism in the turnover door, a second end of a movable connecting rod of the connecting rod structure is arranged in the containing part in a penetrating way, the first connecting rod moves, and the movable connecting rod can move in the containing part in a matching way with the first connecting rod.

Preferably, the middle part in the accommodating part is provided with a limiting plate, and the space formed by enclosing the limiting plate and the accommodating part is a movable space at the second end of the movable connecting rod, and the movable space is used for enabling the movable connecting rod to extend and contract.

Preferably, the limiting plate is provided with a limiting hole, a limiting bolt is arranged in the limiting hole in a penetrating mode, and the first end of the limiting bolt penetrates through the limiting plate to be connected with the second end of the movable connecting rod.

Preferably, the lower end of the hinge part and the front lower end of the receiving part are of an open structure.

Preferably, the hinge portion has a plurality of prisms provided at an upper portion thereof with grooves therebetween.

Preferably, the shape of the receiving portion is adapted to the shape of the movable link.

The utility model also provides a roll-over door, which comprises the extension piece for the roll-over door.

The beneficial effects of the utility model are as follows: in the utility model, one end of the movable connecting rod is hinged, and the other end of the movable connecting rod is connected with the connecting rod of the connecting rod mechanism through the extending piece, when the connecting rod mechanism moves, the end, connected with the extending piece, of the movable connecting rod can move in the extending piece, so that the movement of the connecting rod mechanism is matched, the abrasion of the movable connecting rod is avoided, and the service life of the movable connecting rod is prolonged. The movable connecting rod can play a good reinforcing effect for a long time.

Drawings

FIG. 1 is a schematic view of a roll-over door in accordance with an embodiment of the present application;

FIG. 2 is a schematic view of a roll-over door according to an embodiment of the present application when opened;

FIG. 3 is a schematic diagram of an active chassis according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded structure of an active enclosure according to one embodiment of the present application;

FIG. 5 is a schematic diagram of a transmission mechanism according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a third transmission rod according to an embodiment of the present application;

FIG. 7 is a schematic view of a door row according to an embodiment of the present application;

FIG. 8 is a schematic structural view of a linkage mechanism according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an exploded construction of a linkage according to an embodiment of the present application;

FIG. 10 is a schematic view of the structure within the linkage cover according to one embodiment of the present application;

FIG. 11 is a schematic view of a structure at a side of a linkage mechanism according to an embodiment of the present application;

FIG. 12 is a schematic structural view of a linkage according to an embodiment of the present application;

FIG. 13 is a schematic view of the structure of an extender according to an embodiment of the present application;

FIG. 14 is a schematic view of a structure at the bottom of an extender according to an embodiment of the present application;

FIG. 15 is a schematic view of the structure at the interior of the extender according to an embodiment of the present application;

fig. 16 is a schematic structural view of a connection base according to an embodiment of the present application.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

For the description of the present utility model, the labels "front", "rear", "up", "down", "left" and "right" shown in fig. 1 are used for non-limiting purposes to facilitate understanding of this embodiment and are not intended to limit the present utility model. Wherein, the front-back direction represents the longitudinal direction, the left-right direction represents the transverse direction, and the up-down direction represents the vertical direction.

Fig. 1 to 16 show an embodiment of the roll-over door of the present utility model, which comprises a driving chassis 1, a driven chassis (not shown in the figure) and a door row 2, wherein the driving chassis 1 and the driven chassis are oppositely arranged, two ends of the door row 2 are respectively connected with the driving chassis 1 and the driven chassis, and a controller 11, a driving mechanism 12 and a transmission mechanism 13 are arranged in the driving chassis 1; the controller 11 is electrically connected with the driving mechanism 12, and the controller 11 is used for controlling the driving mechanism 12; an output shaft of the driving mechanism 12 is connected with a transmission mechanism 13; the door row 2 comprises a main body door 21 and link mechanisms 22 at two sides of the main body door 21, the main body door 21 is transversely arranged, the link mechanisms 22 are longitudinally arranged, one end of each link mechanism 22 is connected with a driving rotating shaft 1335 of the transmission mechanism 13, and the other end of each link mechanism 22 is connected with the main body door 21; the driving mechanism 12 drives the door row 2 to turn up and down through the transmission mechanism 13.

In this application, the main body door 21 is disposed laterally, and the link mechanism 22 is disposed longitudinally such that the main body door 21 extends out in the longitudinal direction. Compared with a sliding door and a folding door, the occupied space of the main body door 21 is reduced, the main body door 21 is prevented from occupying more installation areas, and when the turnover door is turned upwards to be opened, the corresponding areas of the main body door 21 are all passing areas, so that the main body door 21 can be prevented from influencing the passing on the ground beside the active case 1. Compared with the lifting door, the stability of the door row 2 during up-and-down overturning is improved through the driving machine box 1 and the driven machine box.

When the door row 2 is used, the door row 2 can be driven to turn up and down through one driving machine box 1 and one driven machine box, and the door row 2 can be synchronously driven to turn up and down through the two driving machine boxes 1.

When the driving case 1 and the driven case are used for driving the door row 2 to turn up and down, the driving case 1 is used for providing power to drive the door row 2 to turn up and down, the driven case does not need to provide power, and when the driving case 1 drives the door row 2 to turn up and down, the driven case is matched with the driving case 1 to enable the door row 2 to stably turn up and down. The driven case can be a fixed frame, a bearing is arranged on the fixed frame and is connected with the door row 2, and when the driving case 1 provides power to drive the door row 2 to turn up and down, the bearing of the driven case rotates along with the rotation, so that the supporting effect and the linkage effect on the door row 2 can be achieved. The up-and-down turning of the door row 2 is ensured.

Preferably, the two cases are both active cases 1, and the two active cases 1 synchronously move to drive the door row 2 to turn up and down. Therefore, higher power for driving the door row 2 to turn up and down can be ensured, and the stability of the door row 2 during the up and down turning can be ensured. Two opposite active cases 1 are arranged on two sides of the door row 2, and the two active cases 1 synchronously drive the main body door 21 to turn up and down through a link mechanism 22; thereby enabling the rotation of both sides of the door row 2 to be performed simultaneously, and thus ensuring the stability of the door row 2 when it is turned over.

Preferably, as shown in fig. 4, 5 and 6, a controller 11, a driving mechanism 12 and a transmission mechanism 13 are provided inside the active enclosure 1. The controller 11 is electrically connected to the driving mechanism 12 for controlling power supply and power interruption to the driving mechanism 12, and controlling a rotational direction, a rotational speed, and the like of the driving mechanism 12. The drive mechanism 12 may be a drive motor 121, or a combination of a drive motor 121 and a decelerator 122. Preferably a combination of a drive motor 121 and a decelerator 122. The rotation shaft of the drive motor 121 is connected to a speed reducer 122, and the output shaft of the speed reducer 122 is further connected to the transmission mechanism 13. The transmission mechanism 13 comprises a first transmission rod 131, a second transmission rod 132 and a third transmission rod 133, wherein a first end of the first transmission rod 131 is provided with a transmission connecting hole 1311 for connecting an output shaft of the speed reducer 122, a second end of the first transmission rod 131 is hinged with a first end of the second transmission rod 132, a second end of the second transmission rod 132 is hinged with a first connecting part 1331 of the third transmission rod 133, and a first driving connecting hole 1336 for connecting a driving rotating shaft 1335 is further arranged on the third transmission rod 133. When the controller 11 controls the driving motor 121 to power on, the output shaft of the speed reducer 122 starts to rotate, and drives the first transmission rod 131 to the third transmission rod 133 to rotate, and the third transmission rod 133 drives the driving shaft 1335 to rotate during rotation, and the driving shaft 1335 is connected with the door row 2, so that the door row 2 can be turned upwards or downwards.

Preferably, as shown in fig. 4, the traction mechanism 14 is further connected to the second connecting portion 1333 of the third transmission rod 133. The traction mechanism 14 comprises a traction rod 141 and a traction spring 142, a first end of the traction rod 141 is connected with a second end of the third transmission rod 133, a second end of the traction rod 141 is connected with the top of the traction spring 142, and the bottom of the traction spring 142 is fixed on the bottom cover of the active case 1.

Because the overturning of the door row 2 is realized by driving the driving shaft 1335 through the third transmission rod 133, if the initial speed of the third transmission rod 133 is too high, the door row 2 can be suddenly started when the door row starts to rise or fall, so that the stability is poor, and the overall service life of the door row 2 can be reduced.

The traction mechanism 14 can play a role of buffering, and the third transmission rod 133 is prevented from generating a larger initial speed. Specifically, the third transmission rod 133 can pull the traction spring 142 through the traction rod 141 in the rotation process, the traction spring 142 can generate a pulling force after being stretched, the direction of the pulling force is opposite to the rotation direction of the third transmission rod 133, the situation that the initial speed of the third transmission rod 133 is too high is avoided, the speed of the door row 2 in overturning is kept constant as much as possible, the lifting stability of the door row 2 is enhanced, and the service life of the door row 2 is prolonged.

Further, as shown in fig. 4, a first bearing seat 15 is further disposed above the speed reducer 122, and the first bearing seat 15 is movably connected with the driving shaft 1335. Specifically, the first bearing seat 15 is provided with a bearing, an inner ring of the bearing is fixedly connected with the driving rotating shaft 1335, an outer ring of the bearing is fixedly connected with the first bearing seat 15, so that the driving rotating shaft 1335 can also rotate on the first bearing seat 15 in the process of rotating the driving rotating shaft 1335 by the third transmission rod 133, and the first bearing seat 15 provides support for the driving rotating shaft 1335.

Preferably, as shown in fig. 6, the third transmission rod 133 includes a first connection portion 1331, a transmission connection portion 1332 and a second connection portion 1333, which are sequentially disposed, the first connection portion 1331 is used for connecting the second transmission rod 132, the transmission connection portion 1332 is used for connecting the driving shaft 1335, and the second connection portion 1333 is used for connecting the traction mechanism 14.

The transmission connecting part 1332 is connected with a first connecting part 1331 of the third transmission rod 133, the transmission connecting part 1332 comprises a circular cylinder 13321 with an opening, and the hollow part of the circular cylinder 13321 is a first driving connecting hole 1336; locking plates 13322 extend out of openings of the circular cylinder 13321, locking holes 13323 are formed in the two locking plates 13322, bolts penetrate through the locking holes 13323, the two locking plates 13322 can be locked through the bolts, and therefore the third transmission rod 133 can be adapted to driving rotating shafts 1335 with different sizes through the transmission connecting portions 1332, and locking force of the transmission connecting portions 1332 to the driving rotating shafts 1335 can be adjusted conveniently. Facilitating the removal and installation of the third transmission rod 133 with respect to the driving rotation shaft 1335.

A keyway 13324 is provided inside the drive connection 1332. The key slot 13324 is used to connect the drive shaft 1335.

Preferably, as shown in fig. 6, the third transmission rod 133 further includes a transmission extension portion 1334, the transmission extension portion 1334 is disposed between the transmission connection portion 1332 and the second connection portion 1333, the transmission extension portion 1334 includes a first extension sub-portion 13341 and a second extension sub-portion 13342, the first extension sub-portion 13341 is disposed longitudinally, a first end of the first extension sub-portion 13341 is connected to the transmission connection portion 1332, a second end of the first extension sub-portion 13341 is connected to a first end of the second extension sub-portion 13342, the second extension sub-portion 13342 is disposed vertically, and a second end of the second extension sub-portion 13342 is connected to the second connection portion 1333.

The transmission extension part 1334 is in a bent shape through the first extension sub-part 13341 arranged longitudinally and the second extension sub-part 13342 arranged vertically, so that the transmission mechanism 13 can be extended inwards as required, the structure of the transmission mechanism 13 is more compact, and the occupied space of the transmission mechanism 13 is reduced. And the structural strength of the third transmission rod 133 can be improved, and the stability of the door row 2 is ensured.

Preferably, a transmission reinforcement bar 13343 is provided between the first extension portion 13341 and the transmission connection portion 1332, and the transmission reinforcement bar 13343 is used for increasing the structural strength of the third transmission rod 133.

Preferably, as shown in fig. 7, the door row 2 includes a main body door 21 and a link mechanism 22, and one end of the link mechanism 22 is connected to the driving shaft 1335 and the other end is connected to the main body door 21. The main body door 21 includes a frame 211 and a door lever 212 provided in the frame 211. The frame 211 has a square structure and comprises an upper beam 2111, a lower beam 2112, a right support bar 2113 and a left support bar 2114, and a door rod 212 is vertically arranged between the upper beam 2111 and the lower beam 2112.

Preferably, as shown in fig. 7, the lower ends of the right and left struts 2113 and 2114 are each provided with a buffer 213, and the buffer 213 is used to buffer a buffering force when the main body door 21 falls to the ground. So that the main body door 21 is smoothly landed.

In an embodiment, the link mechanism 22 may be only a first connecting rod 221, one end of the first connecting rod 221 is fixed on the frame 211, the other end is fixedly connected with the driving shaft 1335, and the first connecting rod 221 drives the main door 21 to turn up and down through the rotation of the driving shaft 1335. However, the main door 21 is turned upside down only by the first connection rod 221, and the stability is poor.

Further, as shown in fig. 8-11, the linkage 22 further includes a second connecting rod 222, a connecting seat 229 and a linkage 224. The connecting seat 229 is disposed on the frame 211, the linkage member 224 includes a first connecting rod 2241, a linkage part 2242 and a second connecting rod 2243, wherein the first end of the first connecting rod 221 is hinged on the upper side of the connecting seat 229, the second end of the first connecting rod 221 is fixedly connected with the first connecting rod 2241, the first end of the second connecting rod 222 is hinged on the lower side of the connecting seat 229, the second end of the second connecting rod 222 is hinged with the second connecting rod 2243, and the linkage part 2242 is connected with the driving shaft 1335. Through the arrangement of the first connecting rod 221 and the second connecting rod 222, the stability of the main body door 21 during vertical overturning can be improved, the supporting force of the connecting rod mechanism 22 on the main body door 21 is balanced, and the conditions of shaking and the like of the main body door 21 are avoided.

The first link part 2241, the link part 2242, and the second link part 2243 of the link 224 may be in a side-skewed U shape, and the link part may be located at an intermediate position. In order to further improve stability and save materials, it is preferable that the first link part 2241 is longitudinally disposed and the second link part 2243 is vertically inclined to extend toward the connection seat 229 as shown in fig. 12. The angle between the first link 2241 and the second link 2243 is 30 ° -90 °, preferably 60 °.

When the first connecting rod 221 is connected to the first connecting rod 2241, the first connecting rod 221 may be directly fixedly connected to the first connecting rod 2241. Preferably, the first connecting rod 2241 is disposed in the first connecting rod 221 and fixedly connected with the first connecting rod 221. Therefore, the connection between the first link 2241 and the first link 221 can be ensured, the disconnection between the first link 221 and the first link 2241 can be avoided, the exposure of the first link 2241 can be avoided, and the appearance can be improved.

Further, as shown in fig. 9, the link mechanism 22 includes a reinforcing rod 228, the reinforcing rod 228 is disposed in the first connecting rod 221 in a penetrating manner, a first end of the reinforcing rod 228 is connected to the first connecting rod 2241 and the first connecting rod 221, and a second end of the reinforcing rod 228 is connected to the first connecting rod 221. The reinforcing bar 228 serves to enhance the coupling strength of the first link 2241 and the first link 221. When the first link 2241 is turned up and down by the first link 221, the first link 2241 is mainly a force receiving point, and the reinforcement bar 228 is provided at the first link 2241 to increase the connection strength between the first link 2241 and the first link 221 in order to ensure the connection strength between the first link 2241 and the first link 221.

Preferably, as shown in fig. 9, the reinforcing rod 228 is provided with a reinforcing hole 2281, the upper end surface of the first link portion 2241 is provided with a limiting protrusion 2244, the limiting protrusion 2244 is adapted to the reinforcing hole 2281, the limiting protrusion 2244 is inserted into the reinforcing hole 2281, and the position of the reinforcing rod 228 is defined by the cooperation of the limiting protrusion 2244 and the reinforcing hole 2281, so as to avoid the movement of the reinforcing rod 228 relative to the first link portion 2241. The stability of the connection of the first link 2241 with the first link 221 is improved.

Preferably, the first connection rod 221 and the first connection rod 2241 are fixedly connected by bolts penetrating the first connection rod 221 and the first connection rod 2241. In the first connecting rod 221 and the first connecting rod portion 2241, the bolts are provided in two rows and three columns.

The reinforcing rod 228 and the first connecting rod 221 are fixed by bolts. The reinforcement bar 228 and the first link 2241 may be fixed by welding.

Preferably, two reinforcing bars 228 are provided, which are respectively located at the upper and lower sides of the first link 2241.

Preferably, as shown in fig. 11, a coupling 226 is provided inside the interlocking part 2242, and is connected to the driving shaft 1335 through the coupling 226. The outer cover 225 is disposed on the outer side of the linking portion 2242, and the outer cover 225 is used to prevent the linking portion 2242 and the driving shaft 1335 from being exposed.

Further, as shown in fig. 8-11, the linkage 22 further includes a movable link 223, the movable link 223 is located between the first connecting rod 221 and the second connecting rod 222, a first end of the movable link 223 is hinged on the connecting seat 229, and a second end of the movable link 223 is hinged in the middle of the first connecting rod 221. When the rotation of the driving shaft 1335 drives the first connecting rod 221 to turn up and down, a better linkage effect can be achieved through the movable connecting rod 223, so that the stability of the main body door 21 during up and down turning is further improved.

Preferably, the first end of the movable link 223 is adjacent to the first end of the second connecting rod 222. Therefore, when the first connecting rod 221 rotates, the movable connecting rod 223 can well drive the second connecting rod 222 to carry out linkage. The stability of the main body door 21 when it is turned upside down is ensured.

Preferably, the movable link 223 is extendable and retractable. The movable link 223 may be a telescopic rod that is sleeved. The movable connecting rod 223 can be extended and contracted to a certain extent, so that the movable connecting rod can be conveniently matched with the first connecting rod 221 and the second connecting rod 222 to turn up and down.

Preferably, as shown in fig. 13, 14 and 15, the linkage 22 further includes an extension member 227, the extension member 227 includes a hinge portion 2271 and a receiving portion 2272, the hinge portion 2271 is hinged to the first connecting rod 221 through a hinge seat, and the second end of the movable connecting rod 223 is disposed in the receiving portion 2272 in a penetrating manner, so as to be movable in the receiving portion 2272. When the first connecting rod 221 is turned to the uppermost position, the second end of the movable connecting rod 223 is located outside the accommodating part 2272, and still in the accommodating part 2272, without being separated from the accommodating part 2272. When the first connection rod 221 is turned to be horizontal, the second end of the movable link 223 is located inside the receiving portion 2272 without colliding against the inner wall of the innermost end of the receiving portion 2272. One end of the movable connecting rod 223 is hinged, the other end is connected with the connecting rod of the connecting rod mechanism 22 through the extending piece 227, when the connecting rod mechanism 22 moves, one end, connected with the extending piece 227, of the movable connecting rod 223 can move in the extending piece 227, so that the movable connecting rod mechanism 22 is matched with the movement of the connecting rod mechanism 223, abrasion of the movable connecting rod 223 is avoided, and the service life of the movable connecting rod 223 is prolonged. The movable connecting rod 223 can play a good reinforcing effect for a long time.

Preferably, a limiting plate 2273 is disposed in the middle of the accommodating portion 2272, and the limiting plate 2273 and the accommodating portion 2272 enclose a space formed by the limiting plate 2273 and the accommodating portion 2272, and a movable space at the second end of the movable connecting rod 223 enables the movable connecting rod 223 to extend and retract to a certain extent. And is convenient to turn up and down in cooperation with the first connection rod 221 and the second connection rod 222.

Preferably, the limiting plate 2273 is provided with a limiting hole 2274, a limiting bolt 2275 is arranged in the limiting hole 2274 in a penetrating manner, and a first end of the limiting bolt 2275 penetrates through the limiting plate 2273 and is connected with a second end of the movable connecting rod 223. The second end of the stop pin 2275 is disposed outside of the stop plate 2273. The second end of the movable link 223 is prevented from sliding out of the housing 2272 by the stopper 2275, and safety and stability of the movable link 223 in use are improved.

Preferably, the lower end of the hinge portion 2271 and the front lower end of the receiving portion 2272 are of an open structure, thereby enabling easy installation and adjustment of the stopper 2275.

Preferably, the hinge portion 2271 has a plurality of prisms 2276 at an upper portion thereof, and grooves 2277 are provided between the prisms 2276; the structural strength of the hinge 2271 can be improved by the prisms 2276 and the grooves 2277. And also avoids the waste of materials.

Preferably, as shown in fig. 16, the connection base 229 includes a bottom plate portion 2291 and side plate portions 2292 on both sides of the bottom plate portion 2291, the bottom plate portion 2291 is vertically disposed on the right support bar 2113 or the left support bar 2114 of the frame 211, and the side plate portion 2292 includes a first connection sub-portion 22921 on an upper portion and a second connection sub-portion 22923 on a lower portion. The first connecting sub-portion 22921 is provided with a first hinge hole 22922, and a hinge shaft is inserted into the first hinge hole 22922 to hinge with the first end of the first connecting rod 221. The second connection sub-portion 22923 has a second hinge hole 22924 formed at a lower portion thereof, and a hinge shaft is inserted into the second hinge hole 22924 to hinge with the first end of the second connection lever 222.

Preferably, the second hinge hole 22924 is an elongated shape, a key hole, or the like.

The elongated arrangement of the second hinge hole 22924 can make the position of the second connecting rod 222 relative to the second connector portion 22923 variable, so that the second connecting rod 222 has a certain moving space relative to the second connector portion 22923, which is convenient for the main door 21 to have a certain flexibility when turning up and down.

When the link mechanism 22 includes the movable link 223, a third hinge hole 22925 is provided at a middle portion of the second connection sub-portion 22923, and a hinge shaft is inserted into the third hinge hole 22925 to hinge with an end portion of the movable link 223.

The bottom plate portion 2291 has fixing portions 2293 extending from both upper and lower sides, and the bottom plate portion 2291 is fixed by the fixing portions 2293, thereby facilitating the fixation of the connection base 229 and avoiding the lateral extension of the connection base 229 structure.

The connection seat 229 to be connected with the link mechanism 22 is provided with an integral structure, so that rapid installation can be realized during installation, and the connection seat 229 of the integral structure defines the connection position with the link mechanism 22, which also defines the interval between the link mechanisms 22, ensures the constant interval between the link mechanisms 22, and ensures the stable movement of the link mechanism 22.

It can be seen that the utility model discloses a roll-over door, wherein the main body door is transversely arranged, and the link mechanism is longitudinally arranged, so that the main body door extends out in the longitudinal direction. Compared with the sliding door and the folding door, the occupied space of the main body door is reduced, the main body door is prevented from occupying more installation areas, and when the turnover door is turned upwards to be opened, the corresponding areas of the main body door are all passing areas, so that the main body door can be prevented from being on the ground beside the case to influence the passing. Compared with the lifting door, the stability of the door row during up-down overturning is improved through the driving machine box and the driven machine box.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.

Claims (7)

1. The extension piece for the roll-over door is characterized by comprising a hinge part and a containing part, wherein the hinge part is used for being connected with a first connecting rod of a connecting rod mechanism in the roll-over door, a second end of a movable connecting rod of the connecting rod mechanism is arranged in the containing part in a penetrating way, the first connecting rod moves, and the movable connecting rod can be matched with the first connecting rod to move in the containing part.

2. The extension piece for a roll-over door according to claim 1, wherein a limiting plate is provided at a middle portion in the accommodating portion, and a space formed by the limiting plate and the accommodating portion is a movable space of the second end of the movable link, and the movable space is used for extending and contracting the movable link.

3. The extension piece for a roll-over door according to claim 2, wherein the limiting plate is provided with a limiting hole, a limiting bolt is arranged in the limiting hole in a penetrating manner, and a first end of the limiting bolt penetrates through the limiting plate to be connected with a second end of the movable connecting rod.

4. An extension piece for a roll-over door according to claim 3, wherein the lower end of the hinge portion and the front lower end of the receiving portion are of an open structure.

5. An extension for a roll-over door according to claim 1, wherein the hinge is provided at an upper portion thereof with a plurality of prisms with grooves therebetween.

6. The extension for a roll-over door according to claim 1, wherein the shape of the receiving portion is adapted to the shape of the movable link.

7. A roll-over door comprising an extension for a roll-over door according to any one of claims 1-6.